EP0564411A1 - Device for crimping connectors on bets of stripped lines and/or for stripping electrical or optical lines - Google Patents

Abstract

The invention relates to a device for pressing plugs onto stripped cable elements. In contrast to the prior art, two eccentric shafts (84) are driven by a drive motor (21), which eccentric shafts (84) each guide a lifting element (81) with respect to one another. Mounted on the lifting elements (81) are crimping tools which, according to the invention, do not displace the lead ends during crimping. The device according to the invention is particularly quiet and user-friendly as a result of further construction features. A special design is also used for stripping different lengths and diameters of electrical or optical leads (cables) using a clamping device according to the invention and two clamping jaws, and using an ejector which automatically ejects lead ends, which are stripped or are provided with plugs, from the clamping jaws. A second special design has an electric motor drive (21), for lifting upper parts and lower parts (81, 85) having in each case one drive shaft (12), a drive block (62) also being driven on one of these shafts (12), which drive block (62) grips cam controllers (2, 3) which engage via connecting elements (71, 68) on control elements of the stripping unit (63). <IMAGE>

Description

The invention relates to a device for pressing plugs onto stripped line parts in accordance with the preamble of claim 1.

Such a device was developed by the applicant in 1985 and described, for example, in German Offenlegungsschrift 3540083 of May 14, 1987.

Compared to previous arrangements that were operated with compressed air, rotary drives have the advantage of working with less noise, while at the same time the working speed could be increased by using an eccentric shaft. Such earlier devices operated by compressed air have been published, for example, in the applicant's German patent 2411744.

The problem with the known arrangement according to German Offenlegungsschrift 3540083 was that the line end was always bent by the movable upper part of the lift when crimping plugs onto the lower part of the lift. As a result, the cable itself was mechanically stressed, which is problematic with different types of insulation, and on the other hand, the pressed-on connector could also cause undesirable cranking or the like. receive. In the case of stiff cables, in particular, they could get stuck when they were pulled back due to the bending.

The earlier solutions according to German patent 2411744 did not have this problem; there the top and bottom of the stroke were fed symmetrically to the end of the line, but there was a link the technical teaching of this patent is not possible with the machines according to the aforementioned German published application, since the teaching according to the German patent requires a linear drive, but that according to the German published application has a rotary drive.

The invention is therefore based on the object of providing a crimping device which, on the one hand, has a relatively quiet drive motor with a rotating drive and, on the other hand, avoids the disadvantage of bending the inserted cable ends during crimping.

This object is achieved in a surprisingly simple manner by the features in the characterizing part of claim 1.

Only the doubling of the drive shafts according to the invention with simultaneous use of one eccentric shaft for each lifting part and the design of the lifting parts in accordance with the last feature of claim 1 create entirely new advantageous effects: crimping times of up to 0.3 seconds are possible, and the noise is generated reduced to less than 70 Db (A).

The masses to be accelerated are kept low. Furthermore, they are advantageously adapted to the laws of inertia due to the continuous rotary movement of the shafts and the drive motor - with the exception of the lifting parts themselves.

Further advantageous embodiments of the invention are described in the dependent claims or placed under protection. They result in further advantages and possible uses.

The possibility according to the invention of setting the stroke lengths of the lifting parts differently comes from the fact contrary to the fact that there are often different space conditions in the area of the upper or lower lifting part - for example if, in addition to the crimping tools attached to the lifting parts, also stripping units, separating units or the like. are provided.

The lateral displacement of the drive motor, which is preferably held in the floor area, leads to a compact, positionally stable construction, the use of a toothed belt having a positive effect on low noise development and the avoidance of large masses.

A further inventive achievement results in the combination of one of the drive shafts with the drive block for driving a stripping unit according to claim 4. According to the invention, the compressed air-driven linear drives for the stripping units, which are indispensable in the previous devices, can also be dispensed with, which in turn is conducive to noise reduction .

The individual features of claim 5 each result in the following advantages: The controlled frequency converter allows different operating modes, such as a test operation, or slow-motion or slow-speed operation. A known input and / or programming unit increases the ease of use of the device according to the invention. A magnetic sensor for line detection is suitable because of its sensitivity. It can be easily coupled to an electronic control. An emergency stop switch increases operational safety, and position monitoring is used to coordinate the control according to the program.

The operating modes described in claim 6 increase ease of use or reduce working hours. The tool change mode can do that Tool can be changed very quickly. The test mode avoids unnecessary rejects because an operator can follow the procedure in detail. The reset mode automatically switches to the reset position without additional effort, and the emergency mode prevents consequential damage and enables the monitoring operating personnel to be informed via its signal output. If necessary, an automatic triggering of an emergency mode without actuating the safety switch can also be provided, for example when a certain power consumption on the drive motor is exceeded, for example when material is jammed between the crimping tools, in the absence of feed parts or the like.

A lighting fixture according to the invention helps with setting and when manually feeding the cable ends.

Further features and advantages result from the description of the figures.

Overall, the invention results in a high end quality with low tolerances, low scrap production and high user friendliness.

Reference is also made to the content of German patent specification 3540083, which is considered to be completely within the content of this disclosure. This particularly affects Figures 1 and 4-5 and the associated parts of the description.

For a better understanding of the invention, an exemplary embodiment, which corresponds to a functional prototype, is described in more detail by way of example with reference to a drawing.

Fig.1

eine Ansicht von der Seite mit abgenommener Abdeckhaube und entfernten Werkzeugen,

Fig.2

einen Schnitt nach der Linie II./II. gemäss Fig.1,

Fig.3

einen Schnitt nach der Linie III./III. gemäss Fig.1,

Fig.4

ein Detail der Abisoliereinheit im Schnitt,

Fig.5

das Schema der Abisoliereinheit mit Abisolierkopf in Draufsicht,

Fig.6

die Abisoliermesser,

Fig.7

ein Detail der Abisoliereinheit in Draufsicht mit um 90° geschwenktem Abisolierkopf,

Fig.8

eine Frontansicht auf den Abisolierkopf,

Fig.9

eine Draufsicht auf das Schema der Abisoliereinheit mit seitlicher Schwenkeinrichtung in Arbeitsstellung,

Fig.10

die Einheit gemäss Fig.9 in Schwenkstellung,

Fig.11

eine Seitenansicht auf die Einheit gemäss Fig.9,

Fig.12

ein Blockschaltbild der erfindungsgemässen Vorrichtung mit schematisch dargestellten, programmgesteuerten Elementen,

Fig.13

eine Ansicht auf ein erfindungsgemäss verwendetes Bedienfeld mit einem Schlüsselschalter, einem Anzeigefeld und Funktionstasten sowie Tasten zur Programmwahl bzw. Programmänderung,

Fig.14

eine Seitenansicht auf das Schema der erfindungsgemässen Klemmeinrichtung für zugeführte Leitungsenden,

Fig.15

eine Frontansicht mit Klemmbacken in geöffnetem Zustand,

Fig.16

eine Draufsicht,

Fig.17

eine Frontansicht unter Weglassung verschiedener Teile im geschlossenen Zustand der Klemmbacken,

Fig.18

ein Schaltschema für den Antrieb der Elektromagneten für die Klemmvorrichtung und

Fig.19

dasselbe Schaltschema in einem Umschaltemodus.

It shows:

Fig. 1

a side view with the cover removed and tools removed,

Fig. 2

a section along the line II./II. according to Fig. 1,

Fig. 3

a section along the line III./III. according to Fig. 1,

Fig. 4

a detail of the stripping unit in section,

Fig. 5

the diagram of the stripping unit with stripping head in plan view,

Fig. 6

the stripping knife,

Fig. 7

a detail of the stripping unit in plan view with stripping head pivoted through 90 °,

Fig. 8

a front view of the stripping head,

Fig. 9

a plan view of the diagram of the stripping unit with a lateral pivoting device in the working position,

Fig. 10

9 in the swivel position,

Fig. 11

a side view of the unit according to Figure 9,

Fig. 12

2 shows a block diagram of the device according to the invention with schematically represented, program-controlled elements,

Fig. 13

1 shows a view of a control panel used according to the invention with a key switch, a display panel and function keys and keys for program selection or program change,

Fig. 14

2 shows a side view of the diagram of the clamping device according to the invention for supplied line ends,

Fig. 15

a front view with jaws in the open state,

Fig. 16

a top view,

Fig. 17

a front view with omission of various parts in the closed state of the jaws,

Fig. 18

a circuit diagram for driving the electromagnets for the clamping device and

Fig. 19

the same circuit diagram in a toggle mode.

The device according to the invention is constructed on a one-piece bearing block 1 which carries an electric motor 21 with a gear 83 (FIGS. 1-3). It supports two drive shafts 12, the lower one for driving a lower lifting part 85 and the upper one for driving an upper lifting part 81. The lifting parts 81 and 85 are only shown schematically and, if necessary, carry them via adapters - the pressing tools (crimping tools). On one end, the drive shafts 12 are each equipped with a toothed belt pulley 18, which can be driven by the motor 21 via a toothed belt 22. At the other end, the drive shafts 12 are each connected to an eccentric shaft 84 or an eccentric gear which is or is housed in a gear housing 101 of the bearing block 1.

Noises during operation of the eccentric shafts 84 are shielded by the housing 101. The eccentric shafts 84 drive the lower and upper parts, 85 and 81, towards and against each other. The parts 85 and 81 are guided in carriages, not shown.

According to the invention, both parts 85 and 81 have to travel different distances, however, the tools used hit the inserted line end simultaneously from above and below, so that this is not dislocated by any of the parts 85 or 81 or by any of the tools (not shown) used .

The different paths are brought about by different eccentrics 84 or settings thereon, but can also be brought about by different translations due to different toothed belt pulleys 18. The toothed belt 22 is biased by a pressure roller 87.

For crimping operation, a clamping device 82 for detecting and holding a supplied line end and a sensor 56 - only shown symbolically in FIG. 1 - for adjusting the length of the supplied line end and for triggering the work sequence of the device are also provided.

With the elements described, the device according to the invention can essentially already be used for crimping alone. E.g. In operation together with an automatic production line, where stripped cable ends are already fed, this structure would be sufficient.

However, the exemplary embodiment shown also includes a stripping unit 63 which serves to strip an inserted cable end before it is subjected to the crimping process.

The drive according to the invention for this stripping unit 63 comprises a drive block 62 which is slidably mounted on the upper drive shaft 12. The drive block 62 is rotatably connected to the shaft 12 by means of a driver clutch 65, which comprises a driver ring 10 secured against rotation on the shaft 12 and a driver pin 102.

The pin 102 engages in a bore in the block 62, which is also longitudinally displaceable on the pin 102. Alternatively, the pin 102 could also be designed as a threaded pin, so that the drive block 62 can be arbitrarily axially displaced or adjusted at the location.

The driver clutch 65 could also be designed as a remotely operable clutch, so that the rotary drive between shaft 12 and block 62 can also be uncoupled if necessary.

The drive block 62 is essentially cylindrical and has a pull-off curve 2 in its outer surface, in which a connecting element 71 with a push arm 4 and a push roller 72 is guided. The push arm 4 is rigidly connected to a guide carriage 16. One revolution of the drive block 62 leads to a longitudinal displacement of the guide carriage 16, which is accordingly held displaceably on a base carriage 15. To the left of the pull-off curve is a guide groove 66 which extends in a ring around the block 62. Guide rollers 11, which are held in a drive plate 13, engage in the guide groove 66.

The drive tab 13 encloses the drive block 62 and is rigidly connected to the base slide 15. A displacement of the base slide 15 thus necessarily results in a displacement of the drive block 62 and vice versa.

The base slide 15 has two guide rods 20, which are held in a holder 14 on the bearing block 1. An adjusting spindle 19, which is rotatably mounted in the base slide 15 and is supported on the holder 14, permits a relative adjustment of the base slide 15 to the holder 14 and thus to the bearing block 1, as a result of which the drive block 62 on the shaft 12 is also axially displaced.

On the left end face 64 of the drive block 62, the latter has an eccentric annular groove or knife curve 3, in which a knife roller 69 runs. The knife roller 69 is rotatably mounted on a knife lever 7 which is pivotally mounted on a lever shaft 6 which is held on the bearing block.

The knife lever 7 is connected at its other end to a joint 8 which holds a pull rod 5 which has a further joint 8 at its other end. The pull rod 5 carries a length adjustment spindle 70 in the area of each joint, so that the distance between the two joints 8 can be adjusted. A program-controlled automatic, motor-driven, length adjustment by means of conventional adjustment mechanisms on the spindle 70 is within the scope of the invention.

The lower joint engages a knife rocker 9 which is fork-shaped in its lower region and is used to apply pull or thrust to the stripping knives 30, 31 according to FIGS. 4-8. For this purpose, the rocker 9 is mounted on a stripping body 17, which in turn is connected to the guide carriage 16 via a hinge 74.

The stripping body 17 has at its lower area a cam roller 25 which engages in a swivel cam 24, as can be clearly seen in FIGS. 9-11.

The pivoting curve 24 is fixed in the bearing block or, if necessary, adjustable or - with the aid of a remote control by motor - adjustable. A displacement of the guide carriage 16 leads to a displacement of the stripping body 17 via the hinge 74, wherein the pivoting curve enables the stripping body 17 and thus a stripping head 73 attached to it to pivot sideways.

The details of the pivoting can be seen in FIGS. 9-11, where it can be seen that the lower joint 8 can also pivot laterally within the knife rocker 9. It is guided there on a ball guide 23. The cam roller 25 is mounted on a guide pin 27.

4 shows details in the interior of the stripping body 17. The knife rocker 9 engages with its fork 103 on a bolt 104 which is held in a rear pressure spindle 32. The pressure spindle 32 has at its other end a threaded bore 100 which has a left-hand thread. The bore 100 is designed as a blind hole, into which a strong compression spring is inserted, which acts on a threaded pin 78, which also has a left-hand thread. The grub screw 78 is connected in a rotationally rigid manner to a gearwheel 34, which on its other side has a grub screw 77 which is provided with a right-hand thread and engages in an opposite threaded bore 100 in a front pressure spindle 33. A length adjustment device 76 is formed by the opposite threads and the gear wheel 34, which makes the two pressure spindles 32 and 33 displaceable to or from each other. Both parts are slidably mounted in a bore of the stripping body 17. The front pressure spindle 33 is provided in its front area with a transverse bore 105 which receives a bearing axis 106 of a toggle lever 75. The toggle lever 75 has two partial levers 40 and 41, the part 40 being connected in an articulated manner to an outer knife holder 26 and the part 41 being articulated on an inner knife holder 28. The outer knife holder 26 is U-shaped in section and encloses or guides the inner knife holder 28 on three sides. The toggle lever 75 and the knife holders 26 and 28 as well as the two V-knives 30 and 31 held by them are in a knife head 29 held, which is attached to the stripping body 17. In the area of the stripping knives 30 and 31, the housing 29 has a conical bore 107 which facilitates the insertion of a cable end between the two stripping knives.

A trigger housing 44 is on the side of the stripping head 73 opposite the conical bore 107 a sensor 56 is provided, in which a trigger is accommodated, which comprises a rocker arm 42 which has a sensor plate 108 on one end and a magnetic sensor 80 on the other. Touching the sensor plate 108 through a line end leads to a signal output at the magnetic sensor 80, on the basis of which the functional sequence of the device according to the invention is started. The position of the rocker arm 42 can be adjusted via a spindle 43 - as not shown, if necessary by remote control.

The presetting of the positions of the stripping knives 30 and 31 with respect to one another is carried out via the length adjustment device 76, this being provided with an adjusting gear 35, an adjusting shaft 79 with an end face 36 for the engagement of a tool and a locking device 38 loaded by a spring 37. According to the invention, this setting can also be carried out by means of a program and by remote control using a motor.

The block diagram according to FIG. 12 shows a possible variant according to the invention, in which a programmable controller - in particular a microprocessor - is provided, containing either freely programmable or reprogrammable or exchangeable memories (for example EPROM). According to the invention, the controller 59 is responsible for ensuring that all process sequences on the device according to the invention take place in the correct order. Connected to it and controlled by it: A frequency converter 58 as a control module for the electric motor 21; a sensor 56 (in particular the magnetic sensor 80 according to FIG. 5) which issues the trigger command for the machining process; a control panel 55 in which basic modes can be selected. According to the invention, some pushbuttons and at least one display are provided in the control panel 55, which provide information about the processing mode selected in each case. You can use the pushbuttons, for example the following - pre-programmed - working modes can be set.

A tool changing mode brings the lifting parts 81 and 85 into a position in which the tools to be fastened thereon are easy to change;
an adjustment mode in which various line-dependent parameters can be entered;
a creeper mode in which the torque of the drive motor 21 is increased, but the speed of which is reduced in order to be able to visually observe the process of stripping or crimping - in this mode, an illumination 60 is also automatically switched on;
a normal operating mode,
a reset mode in which the drive motor 21 automatically moves to a position that can be determined by a position monitoring 61.

A safety switch 57 is also provided, which automatically triggers an emergency operation and / or a reset operating mode after actuation;

Furthermore, a drive unit - in particular an electromagnet 52 - is provided for a clamping device 82 for supplied line ends.

The electric motor 21 can always work both in a reservation mode and basically only rotate in one direction. The curve controls of the pull-off curve 2 and knife curve 3 as well as the eccentric shafts 84 would basically allow both. For particularly fast processing, however, a continuous drive in one direction is preferred, especially in applications in which, for example, a stripping unit is dispensed with (in production line operation, where stripped cable ends are already fed), the continuous direction of rotation of the drive motor 21 is optimal. In the prototype built according to the invention, the processing time for a complete cycle is 0.3 seconds.

In the example according to the invention, the clamping device is driven by electromagnets 52 and 98. However, solutions are also within the scope of the invention in which the clamping device 82 is also controlled by the drive shaft 12 via connecting rods and cam controls.

The inventive design of the clamping device 82 can be seen in FIGS. 14-19.

The device with open jaws 46 and 47 can be seen from FIG. 15. In the exemplary embodiment, the lower jaw 47 is fixed in the bearing block, but can be adjusted on a clamping device 109. The upper clamping jaw 46 is designed in the form of an angle lever, is mounted on its knee in a bearing block-fixed manner and is articulated to a lever rod 50 at its point of attack. The lever rod 50 articulates on the other side on a side of a rocker 51, which is also mounted in a bearing block. The other side of the rocker 51 is connected in an articulated manner via a tie rod 53 to a tie rod 96 which interacts with the electromagnet 52. The open state according to FIG. 15 means that the tie rod 96 protrudes from the electromagnet 52. If necessary, he could do this with spring support, so that as soon as the magnetic field in the electromagnet 52 drops due to a lack of current flow, the access 96 is pressed into the position shown in FIG. In the present example, however, a connecting lever 99 is articulated on the other side of the rocker 51, which is supported at the other end in a bearing block manner. At the load point of the lever 99, a second pull rod 110 engages with one second tie rod 97 is connected, which cooperates with a second electromagnet 98. The two magnets 52 and 98 are arranged so that the respective tie rods 96 and 97 work in opposite directions. In the case of the position according to FIGS. 15 and 14, the tie rod 97 - as not shown - is drawn into the magnet 98, but is extended in the position according to FIG. 17. In this case, spring support can be dispensed with and each of the electromagnets 52 and 98 is responsible for a movement, namely closing and opening movement, of the clamping jaws 46 and 47.

An actuation according to the invention for the electromagnets 52 and 98 is shown in FIGS. 18 and 19, which permits particularly fast and safe clamping operation, which in turn has a favorable effect on the working speed and precision.

18 shows schematically the state according to FIGS. 14 and 15, in which the tension armature 97 is drawn in by the current flow in the electromagnet 98. The tie rod 96 of the electromagnet 52 is pulled out since no current flows in the electromagnet 52. The current control is initiated by the programmable controller 59.

To swivel the rocker 51 or clamp the jaws 46 and 47 according to FIG. 17, the current flow in the second electromagnet 98 is reversed for a short time, as can be seen in FIG . The short-term polarity reversal of the electromagnet 98 causes a short-term field reversal, which pushes the tie rod 97 (which has at least a low remanence magnetism) out of the windings. The short-term nature of the current flow during the switching process in the coil of the second magnet 98 is decisive, since the polarity is too long if the current is too long excited magnetic field of the tie rod 97 would be tightened again.

With this arrangement according to the invention, the two electromagnets switch particularly quickly and without delay, which in turn has a favorable effect on the overall working speed.

The high clamping speed of the clamping jaws 46 and 47 also increases the working precision, especially since a subsequent displacement of the inserted cable end is practically prevented. Even when the sensor plate 108 is touched for a short period of time, the clamping jaws 46 closes under program control and holds the end of the line firmly.

This training according to the invention would also be useful and advantageously usable on its own. However, the invention has a further improvement in which an ejector 48 is assigned to the clamping jaws 46 and 47, which can be displaced radially to the insertable line end via an ejector rod 49 in a guide 90 fixed in the bearing block. When inserting a cable end, the ejector 48 serves as a side stop (see Fig. 15) and thus determines the lateral position of the cable end to be inserted. In order to coordinate this position with the respective crimping tools on the lifting parts 81 and 85, an adjusting mechanism 92 is provided between the ejector 48 and its ejector guide rod 49. This adjustment mechanism can - as shown by manually operated clamping screws - within the scope of the invention also be carried out electrically or remotely by a motor drive. The ejection movement or lateral displacement of the ejector 48 is brought about by an ejector rocker 54 which is connected to the ejector guide rod 49 via a bolt 111. The ejector rocker 54 is designed in the form of an angle lever and is mounted on its knee in a bearing block. Is at its free end a cam 93 is formed on it, which interacts with a control edge 94 on the rocker 51. Every time the control edge 94 brushes past the cam 93 from top to bottom, the upper part of the ejector rocker 54 is flipped to the right. (When closing)

According to the example shown, the driver 91 runs empty. Alternatively, the driver 91 could also be designed as a fork, in which case it would then pull the ejector guide rod 49 and the ejector 48 to the right.

If, on the other hand, the control edge 94 sweeps past the cam 93 from below, the driver or the fork 91 and with it the rod 49 and the ejector 48 are struck to the left, as a result of which line ends lying at the ejector edge of the ejector from the opened clamping device be beaten. The lower clamping jaw 47 faces a cover plate 88, which covers a plug feed 86 upwards. The cover plate 88 prevents the line end from colliding with the connector feed 86.

The automatic ejection of the processed line end in turn increases the overall processing speed, since when a new line end is inserted, the newly processed line no longer has to be removed separately from the clamping device 82.

The inventive design of the first prototype, which is described in many details, shows many ways in which the present device can also be fully automated, so that all parameters can be operated remotely by computer or program-controlled motor control. But the solution shown in the drawing also offers advantages over the known, in particular the increased working speed, the improved precision and the optimally free working space for the tools on the lifting parts 81 and 85. The latter, in particular, also accommodates the use of a wide variety of universal tools, possibly also via adapters.

The invention is thus not restricted by the exemplary embodiments shown.

In this context, it should also be pointed out that the features or very different combinations of features, as expressed in the claims and in the description, can also form independent, independent, inventive objects. This applies in particular to the features of FIGS. 1-3, 4-8, 9-11, 12 and 14-17 and 18 and 19. Furthermore, this applies to the features of claims 3-5, 6 and 7 and to Features of the subsequent claims 8 to 29, which relate to independent but also special embodiments of the invention described, characterize or describe. Combinations of the features and variants with each other are possible. This special training, which can also be used independently, is discussed below.
The first special embodiment relates to a device for stripping different lengths and diameters of electrical or optical lines and / or for pressing plugs onto stripped line parts in accordance with the preamble of claim 8.

It is therefore either a press-on device (crimping machine) or a stripping machine or a combination thereof, as is often used. For example, the applicant has put such combined machines on the market under the names PP3 and K1000. The The subject of the first-mentioned machine is described in German Patent 24 11 744, the subject of the second machine in German Patent 35 40 083.

Cable ends can be easily inserted into the applicant's named machines, which are first stripped by a stripping device and then provided with a plug by the crimping device. Such an end of the line is fed in and then removed by hand by an operator.

It has turned out to be a disadvantage that the operator, before he can insert a new line end, must pull the old line end out of the clamping device, in exactly the opposite direction to the direction of insertion of the next line end. This is an uncomfortable work situation that also requires a high degree of concentration.

The aim of the invention is to simplify the work process to be carried out manually and thus also to increase the working speed of the machine.

This object is achieved independently but also within the scope of the first-mentioned object for the first time by the features of claim 8. The ejector according to the invention automatically pushes the line end out of the clamping area, so that the retraction movement by hand is eliminated.

Further advantageous configurations and variants of the invention are described or characterized in the subsequent dependent claims.

Together with the advantages of the mechanical ejector according to claim 8, this results in the following advantages and modes of operation:

The side stop increases the insertion security and the precision during the stripping or crimping process, whereby the operator has to look less strenuously, since all he has to do is press the end of the cable into the corner between the lower clamping jaw and the stop.

If the ejector can be operated from two sides, it can open the way for certain crimping tools.

An adjustment mechanism enables the ejector to be adapted to different line diameters; an ejector rocker according to the invention is a low-wear component with simple storage options; the interaction of the cam / control edge is particularly reliable and saves additional drive components.

The use of electromagnets leads to considerable noise reduction (compressed air cylinders were provided for the jaw drive in the two mentioned devices according to the prior art) and to simple electronic controllability of the jaw movements.

The self-locking between the lever rod and the rocker has the further advantage that once the cable ends are clamped, they can no longer move sideways. If self-locking were not given, only the tensile force of the electromagnet would cause the holder. This force would have to be designed significantly higher, since during the stripping or crimping process, lateral forces may also act on the cable end, which do not occur when the cable is simply clamped in the initially unloaded state.

The inventive new double magnet arrangement according to the features of the preferred embodiment of claim 12 leads to an easy-to-use, reliable, low-noise clamping device, as is also achieved by the features of claims 13 and 14.

The content of the applicant's two German patents DE-24 11 744 and DE-35 40 083 are considered to be fully disclosed within the scope of this invention.

This applies in particular to the figures and the associated parts of the description.

For the purpose of fully disclosing further details for use within the scope of the invention, or for supplementing or modifying its components, reference is made to the content of the German patent specification 3540083, which is considered to be complete within the content of this disclosure. This particularly affects Figures 1 and 4-5 and the associated parts of the description.

For a better understanding of the first special embodiment, reference is made to FIGS. 1 to 19 already described.

The second special, also independently applicable embodiment relates to a device according to the preamble of claim 16. Such a device is described in the applicant's German patent specification 3540083. In the form of the K1000 model, such a device has also been used successfully since 1985. The pressing tools are driven by an electric motor, the stripping unit is driven by compressed air operated linear drives.

The known device therefore requires two different types of energy: electrical current and compressed air. At the same time, there is a control problem, since it must be ensured that the stripping unit is controlled via the compressed air cylinder synchronously with the control of the electric drive motor. This requires some effort.

In addition, due to the compressed air drives, there is a relatively high noise level.

The present second special embodiment of the invention, which can also be used independently, is based on the object of creating a new device in which compressed air drives can be dispensed with entirely, in which the control between the drive motor for the pressing tools and the stripping unit is mechanical is synchronized and in which high noise is avoided.

According to the invention, this object is achieved by the features of claim 16.
All requirements are met in an optimal way. The noise level is even reduced by around 10 dB (A). The connecting elements ensure a synchronized functional sequence and the energy expenditure is relatively low, at least less than in known systems with electric and compressed air drives, since the expenditure for generating compressed air is eliminated.

Further preferred configurations and variants of the invention are described in the further dependent claims or are placed under protection. The features cited there are new and inventive, in particular in combination with claim 16, but in some cases also include inventive elements which can be protected independently.

The features of the dependent claims result in the following advantages and possible uses:

The arrangement of control cams on the end face and on the circumference of the drive block allow space-saving training.

The movability of the drive block is useful for adjusting the stripping unit with regard to cable ends of different lengths, with the coupling simplifying the adjustment via a drive tab.

The bearing block is preferably formed from a cast block - in particular from light metal. This creates a rigid, torsion-free connection of the various parts of the device. The casting block also securely supports the drive shafts and eccentric shafts.

The inventive design of the stripping unit with a base slide in a bearing block-fixed guide with a single adjusting spindle allows it to be set securely and easily to line ends of different lengths.

In machines with a program control, the features of claim 19 increase the ease of use. The use of an eccentric cam surface for adjusting the knife levers is advantageous because the distances required for the opening and closing movement of the knives can be relatively short. These paths only depend on the diameters of the cables to be stripped.

An adjustability of the drawbar solves the problem of adjustment according to the invention with regard to different line diameters or insulation thicknesses. Remote control also results in increased ease of use.

As a rule, longer distances are required for the stripping movement of the stripping knife than when cutting the insulation, which is why the curve running surface is preferably formed in the outer surface of the drive block. The entire length of the drive block is thus available for controlling the pulling off.

A swiveling design of the stripping head supports the working speed insofar as the working area below the upper lifting part - where the crimping tools are used - can be cleared quickly by simultaneously pulling back and swiveling the stripping unit away.

At the same time, the pivoting away promotes the expulsion of any stripping residues that arise, such as removed insulating parts or the like, which are thrown away by the centrifugal forces during the pivoting movement.

The variant with a guide carriage and a hinge is preferred, the guide carriage undertaking the linear retraction movement in a cam-controlled manner and the lateral pivoting out being carried out by known measures, in particular by the preferred measure according to claim 23.

An adjustability of the swivel curve enables the swivel movement to be adapted in a simple manner, possibly as a function of different crimping tools.

The preferred embodiment of the stripping unit, according to the features of claim 24, represents a simple solution that saves components and functions reliably, particularly in combination with an eccentric cam control.

A length adjustment of a pressure spindle allows the distances between the stripping knives to be varied with regard to different cable diameters or insulation thicknesses. A spindle adjustment according to the invention is still very easy to motorize and can be operated remotely under program control.

A non-rotatable mounting of the spindle ensures the stability of the stripping knife arrangement and reduces the play between the elements.

The embodiment according to claim 27 describes a new and inventive device with particularly advantageously mounted knives or knife holders. This solution, in particular in connection with the preferred features of claim 27, serves the precision of the stripping cut. It needs only a few components.

The design according to claim 28 allows the work area between the lifting parts to be cleared particularly quickly.

The design according to claim 29 is particularly small in connection with the stripping head. The use of a magnetic sensor allows a particularly sensitive reaction to inserted cable ends for the purpose of triggering the stripping and crimping process.

In comparison to the well-known crimping machine K1000, there is no need for a separate ejection unit for stripping waste.

However, such can also be integrated in the stripping unit.

In this regard, reference is made to the content of German patent specification 3540083, which is considered to be completely within the content of this disclosure. This particularly affects Figures 1 and 4-5 and the associated parts of the description.

For a better understanding of this second special embodiment of the invention, reference is made to the description of the figures.

For further explanation, reference is made to the list of reference symbols below.

REFERENCE SIGN LIST

1

Bearing block

2nd

Subtraction curve

3rd

Knife curve

4th

Thrust arm

5

pull bar

6

Lever shaft

7

Knife lever

8th

joint

9

Knife rocker

10th

Drive ring

11

Leadership roles

12

drive shaft

13

Carrying tab

14

holder

15

Basic sledge

16

Guide carriage

17th

Stripping body

18th

Toothed belt pulley (toothed pulley)

19th

Adjusting spindle

20th

Guide rods

21

Drive motor (electric motor)

22

Timing belt

23

Ball bearing

24th

Swing curve

25th

Cam roller

26

Knife holder outside

27

Guide pin

28

Knife holder inside

29

Cutter head housing

30th

Stripping knife inside

31

Stripping knife outside

32

Back pressure spindle

33

Pressure spindle in front

34

gear

35

Adjusting gear

36

Face

37

Compression spring

38

Locking

39

Compression spring

40

Part of the toggle lever outside

41

Part of the toggle lever inside

42

rocker arm

43

spindle

44

Trigger housing

45

free

46

Clamping jaws at the top

47

Clamping jaws below

48

Ejector

49

Ejector guide rod

50

Lever rod

51

Seesaw

52

first electromagnet

53

pull bar

54

Ejector rocker

55

Control panel

56

sensor

57

Safety switch (emergency stop switch)

58

Frequency converter

59

programmable controller (microprocessor)

60

lighting

61

Position monitoring

62

Drive block

63

Stripping unit

64

Face

65

Driving clutch

66

Guide groove

67

Axis of rotation

68

Fastener

69

Knife roll

70

Length adjustment spindle

71

Fastener

72

Push roller

73

Stripping head

74

hinge

75

Toggle

76

Length adjustment device

77

Grub screw

78

Grub screw

79

Adjusting shaft

80

Magnetic sensor

81

Lifting top

82

Clamping device

83

transmission

84 o. U

upper, lower eccentric shaft

85

Lower part of the lift

86

Connector feed

87

Pressure roller

88

Cover plate

89

Drive mechanism

90

guide

91

Carrier

92

Adjustment mechanism

93

cam

94

Control edge

95

mechanism

96

first tie rod

97

second tie rod

98

second electromagnet

99

Connecting lever

100

Tapped hole

101

Gear housing

102

Driving pin

103

fork

104

bolt

105

Cross hole

106

Bearing axis

107

conical bore

108

Sensor plate

109

Clamping device

110

second tie rod

111

bolt

Claims (29)

1. Device for pressing plugs onto stripped cable sections, with a bearing block (1) , a drive motor (21) , a gear (83) , an upper eccentric shaft (84 o) for a press with a movable upper lifting part (81) , a lower lifting part (85) , a plug feed (86) and a clamping device (82) for cable ends, characterized in that the drive motor (21 ) drives two parallel drive shafts (12 ) which are mounted in the bearing block (1) , one of which is the upper one (84 o) the other is assigned to a lower eccentric shaft (84 u) , the lower eccentric shaft (84 u) being connected to the lower lifting part (85) , and the lifting heights of both lifting parts ( 81, 85) to the position using the tool of a line end inserted into the work area can be limited. 2. Device according to claim 1, characterized in that the eccentric shafts (84 o, u) of both lifting parts (81, 85 ) and / or corresponding toothed belt pulleys ( 18) on the drive shafts (12) are designed such that both lifting parts (81, 85) cover different distances with a full stroke, the upper stroke part (81) preferably covering at least 20 mm, the lower stroke part (85) covering at least 10 mm. 3. Device according to claim 1 or 2, characterized in that the drive motor (21) is laterally offset from the plane formed by the axes (67) of the drive shafts (12) and the drive motor (21) or the gear (83) Toothed belt drive (22) is assigned, which is preferably biased by a pressure roller (87) mounted on the bearing block (1) . 4. Device according to one of the preceding claims, with a stripping unit (63) , characterized in that at least one drive shaft (12 ) carries or drives at least one drive block (62) for at least one function control on the stripping unit (63) , the drive block (62) preferably has at least one control cam (2.3), engage in the connecting elements (68,71) to the stripping unit (63). 5. Device according to one of the preceding claims, characterized in that the drive motor (21) is assigned an electronic, programmable control with a microprocessor (59) , which comprises at least one of the following components:
a frequency converter (58 ) controllable by the microprocessor (59) for the drive motor (21) ,
an electronic input and / or programming unit (55) with preferably a display field,
a magnetic sensor (80) for line detection in the work area,
an emergency stop switch (57) which acts on corresponding drive parts via the control (59) ,
position monitoring (61) for toothed belts (22) and / or drive shafts (12) . 6. Method for operating a device according to claim 5, with a control program, characterized in that at least one of the following operating modes is called up by pressing a key:
Tool change mode: The drive motor (21) moves at slow speed - position-monitored - to the extent that the upper and lower lifting parts (81.85) automatically placed in a convenient tool change position;
Test mode: The frequency converter (58) is controlled in such a way that the drive motor (21) rotates at a slow speed - but with increased torque - an interrupting stop of the drive motor (21) is preferably possible via a further command by pressing a button;
Reset mode: The drive motor (21) rotates in the forward or reverse direction until a certain position of all moving parts has been detected by the position monitor (61) ;
Emergency operation mode: After actuation of the safety switch (57) , the working motor (21 ) rotates in slowed-down reversing mode to a presettable position, which can preferably be detected by the position monitoring (61), a signal possibly being sent from the microprocessor (59) to an external signal point . 7. Device according to one of the preceding claims, characterized in that on the bearing block (1) a lighting fixture ( 60) for the working area between the two lifting parts (81 85) is arranged, the light of which automatically at least during the test and / or emergency mode the microprocessor (59) can be activated. 8 device for pressing plugs onto stripped line parts, in particular according to one of claims 1-5 and 7 and / or for stripping different lengths and diameters of electrical or optical lines, with a bearing block (1) , with a plug feed (86) , an electrical Drive motor (21) for a press with a movable upper lifting part (81) and a lower lifting part (85) and / or with a stripping unit (63) and with a programmable controller (59) and with a clamping device (82) with two clamping jaws (46, 47) and a sensor (56) , characterized in that the two clamping jaws (46, 47) are assigned a mechanical ejector (48) which, driven by a motor, inserts an inserted line end after stripping and / or pressing on a plug or the like . has to eject laterally from the open jaws (46, 47) . 9. The device according to claim 8, characterized in that the ejector (48) in the operating state of inserting a line end between the jaws (46,47) serves the line end as a lateral stop. 10. The device according to claim 8 or 9, characterized in that the ejector (48) is connected to a one- or two-sided drive mechanism (89) which pushes the ejector (98) when opening the clamping jaws (46,47) in the ejection direction and if necessary when closing the clamping jaws (46, 47) pulls it back beyond its stop position, the drive mechanism (89) preferably having an ejector guide rod (49) connected to the ejector (48 ) , which is held in a guide (90 ) rigidly held with respect to the bearing block (1) ) is movable and if necessary
an adjustment mechanism (92) , which can preferably be remote-controlled by a program, for the relative longitudinal adjustment between the ejector (48) and the ejector guide rod (49) for adjusting the stop position of the ejector (48) relative to the bearing block (1) . 11. The device according to claim 10, characterized in that the drive mechanism (89) has an - optionally in the rest position spring-loaded - ejector rocker (54) which - in particular via a driver (91), for example a fork - with the ejector guide rod (49) in engagement The ejector rocker (54) preferably has a cam which can be acted upon by a control edge (94) which - further preferably on a rocker (51) - on the mechanism (95) for driving the clamping jaws (46, 47) is trained. 12. Device according to one of the preceding claims, characterized in that at least one of the two clamping jaws (in particular 46) is designed in the form of an angle lever and is connected in an articulated manner to one end of a lever rod (50) which at the other end engages on one side of a two-sided rocker (51) which is connected on its other side to a tie rod (96) of an electromagnet (52) , the rocker (51) being mounted so that it can be fixed in a self-locking manner with the clamping jaws (46) or the lever rod (50) in the closed position is, preferably on the other side of the rocker (51) engages a second tie rod (97) of a second electromagnet (98) which serves to open or overcome the self-locking of the clamping jaw (46) . 13. Device for clamping a line end with two clamping jaws (46, 47) and a drive, in particular for a device according to one of claims 8 to 12, characterized in that at least one of the two clamping jaws (in particular 46) is connected to a mechanism (95) which has a rocker (51) , the inclination of which in one direction corresponds to the closed state of the jaw (46) and the inclination of which in the other direction corresponds to the open state of the jaw (46) , both the two ends of the rocker (51) being connected to a tie rod (96,97) and an electromagnet (52,98) in such a way that when one is excited Magnet (52) of the jaws (46) closes and opens again when the other magnet (98) is excited. 14. Device for driving at least one clamping jaw (46) of a clamping device (82) , in particular for a device according to one of claims 8 to 12, characterized in that two electromagnets (52, 98) are provided, the tie rods (96, 97) are directly or indirectly connected to the clamping jaws (46) , the solenoid coils of which, preferably via a programmable controller (59) , are switched so that excitation of one magnet (52) closes and excitation of the other magnet (98) opens of the jaw (46) . 15. A method of operating a device according to claim 10, characterized in that the windings of the magnets (52, 98) are excited by direct current via electrical feed lines and - preferably electronic - switches, in particular program-controlled, in such a way that when one magnet is excited ( 52) the other (98) is briefly excited with opposite polarity in order to utilize the remanent magnetism in the tie rod (97) of the other magnet (98) for ejecting the armature (97) and vice versa, preferably the current flow of the magnet (52) in each case being excited remains switched on for switching and the Current flow of the counter-excited magnet (98) is switched off immediately after the opposite-pole current surge. 16. Device for pressing plugs or the like onto stripped line parts, in particular according to one of the preceding claims and / or for stripping different lengths and diameters of electrical or optical lines, with a bearing block (1) , an electric drive motor (21) and at least one drive shaft (12) for a press with a movable upper lifting part (81) , a plug feed, a clamping device (82) for supplied cable ends and a stripping unit (63) with a drive for a cutting and retracting movement of stripping knives (30, 31) , characterized in that the drive comprises at least one drive block (62) which is rotatably entrained on the drive shaft (12) and at least one control cam (2.3) or the like, via at least one connecting element (71,68) on the stripping unit (63 ) attacks. 17. The apparatus according to claim 16, characterized in that the drive block (62) is cylindrical and carries on its circumference and / or on at least one end face (64) the control cam (2, 3), preferably a pull-off curve (2) in particular on the circumference - for peeling off the insulation and a knife curve (3) - especially on one end - for cutting in the stripping knife (30, 31) . 18. The apparatus according to claim 16 or 17, characterized in that the drive block (62) on the drive shaft (12) is axially displaceable and rotatably connected to the shaft (12) via a drive coupling (65) , with the connection coupling to the stripping unit (63 ) a driving tab (13) is provided which is rigidly connected to the stripping unit (63) and - preferably via guide rollers (11) - engages in a guide groove (66) on the circumference of the drive block (62) , the stripping unit (63) preferably having a base carriage (15) , which is fixed via at least two parallel guide elements, for example guide rods (20) , which are arranged displaceably in a holder (14) , which holder (14 ) is fixed rigidly on the bearing block (1), however, an adjusting spindle (19) between the base slide (15 ) and holder (14) is provided, via which a displacement of the stripping unit (63) together with its drive block ( 62) in relation to the bearing block (1) can be achieved. 19. The apparatus according to claim 18, characterized in that the adjusting spindle (19) - optionally electronically or program-controlled - can be driven by a motor. 20. Device according to one of the preceding claims, characterized in that the cam surface of the knife curve (3) to the axis of rotation (67) of the drive shaft (12) extends eccentrically, wherein the connecting element (68) has a pull rod (5) each with a joint (8 ) at each end, has a knife lever (7) connected to it , a lever shaft (6) slidably mounted thereon and a knife roller (69) which engages in the knife curve (3) , the joint (8 ) facing the stripping unit (63) ) the pull rod (5) is preferably connected to a knife rocker (9) which converts the lifting or pulling movement of the pull rod (5) into an axial pulling or pushing movement for the closing or opening process of the stripping knives (30, 31) , wherein in particular the pull rod (5) comprises at least one length adjustment spindle (70) which is preferably remotely adjustable by means of a motor, electrical or program-controlled. 21. Device according to one of the preceding claims, characterized in that the cam surface of the pull-off curve (2) runs relative to the axial direction of the drive shaft (12) , the connecting element ( 71) comprising a rigid thrust arm (4) which at one end with at least one thrust roller (72) engages in the stripping curve (2) and is rigidly connected at the other end to a guide carriage ( 16) which is displaceably mounted on the base carriage (15) of the stripping unit (63) and has a stripping body (17) with the stripping blades (30, 31) and carries the knife rocker (9) . 22. Device for stripping different lengths and diameters of electrical or optical lines and for pressing plugs or the like onto the stripped line parts with a bearing block (1) , an electric drive motor (21) and a drive shaft (12) for a press with a movable Upper lifting part (81) , a plug feed (86) , a clamping device (82) and a stripping unit (63) with a drive for a cutting-in and retracting movement of stripping knives (30, 31) , in particular according to one of the preceding claims, wherein the stripping unit ( 63) has a stripping head (73) which is axially displaceable with respect to the line end to be stripped, characterized in that at least the stripping head (73) is additionally pivotally mounted on the stripping unit (63) . 23. The device according to claim 22 and one of the preceding claims 16-21, characterized in that the stripping body (17) is connected to the guide carriage (16) via a hinge (74) , by means of which it can be pivoted out laterally with its stripping head (73) is, the lateral swiveling possibly by its own motor Drive or via a further connecting element and a further cam control - preferably program-controlled - takes place, the stripping body (17) preferably having on its periphery a guide pin (27) which engages in a swivel cam (24) which is in relation to the base slide (15 ) is fixed, which guide pin (27) is preferably designed as an axis and carries a cam roller (25) , and in particular the swivel curve ( 24) can be displaced in relation to the base slide (15) , preferably via an - optionally program-controlled - adjusting device to allow a variation of the pivoting movement of the stripping body (17) . 24. Device for stripping different lengths and diameters of electrical or optical lines and for pressing plugs or the like onto the stripped line parts with a bearing block (1) , an electric drive motor (21) and a drive shaft (12) for a press with a movable Lifting upper part (81) , a plug feed, a clamping device (82) for supplied cable ends and a stripping unit (63) with a drive for a cutting-in and retracting movement of stripping knives (30, 31) , with a stripping head (73) on the stripping unit (63 ) and one knife holder ( 26, 28 ) for each of the two stripping knives (30, 31) , in particular according to one of the preceding claims, characterized in that each knife holder ( 26, 28 ) has a lever ( 40, 41 ) of a toggle lever ( 75), which is assigned via a pressure spindle (33, 32) with a length adjustment device (76), in particular with one for the knife clasp n or open a motorized knife rocker (9) is connected, which preferably converts a high-low movement into a pull-push movement of the spindle ( 33, 32 ) , in particular the pressure spindle (33,32) is formed in two parts, the length adjustment device (76) being arranged between the two parts, which has a gearwheel (34) , each with an axially protruding set screw (77,78) , which has a threaded bore (100) in each engages both spindle parts (33, 32) , the threads of the parts (33, 32, or 100 or 77, 78) being in opposite directions, and preferably the set screws (77, 78) are each held free of play by a compression spring (39) . 25. The device according to claim 24, characterized in that the gear (34) cooperates with an adjusting gear ( 35) which is rotatably held on an adjusting shaft (79) rotatably mounted on the stripping body (17) and one loaded by a compression spring (37) Locking device (38) has the selected setting positions rotationally secured, the shaft (79) being able to be remotely rotated either by hand on its end face (36) or by program control. 26. Device according to one of the preceding claims 13-15, characterized in that the pressure spindle (33, 32) is held in a bore in the stripping body (17) in a rotationally fixed manner. 27. Device for stripping different lengths and diameters of electrical or optical lines and for pressing plugs or the like onto the stripped line parts with a bearing block (1) , an electric drive motor (21) and at least one drive shaft (12) for a press with a Movable upper lifting part (81) , a connector feed (86) , a clamping device (82) for supplied cable ends and a stripping unit (63) with a drive for a cutting and retracting movement of stripping blades (30, 31) , with a stripping head (73) and Stripping knives (30, 31) held in parallel in knife holders ( 26, 28 ) , characterized in that that the knife holder (26) of a knife (31) at the same time as at least a two-sided preferably three-sided - is formed a guide for the knife holder (28) of the other blade (30), more preferably wherein the knife holder (26,28) by a respective part (40 , 41) of a toggle lever (75) are displaceable relative to one another, the cutting edges of the stripping knives (30, 31) - in particular designed as a V-knife - facing one another and possibly sliding back to back. 28. Device according to one of the preceding claims, characterized in that the stripping head (73) is laterally offset and clearly emerges from the plane of the base carriage (15) or guide carriage (16) , the pivoting direction of the stripping head (73) or Stripping body (17) against the lateral extent of the stripping head (73) . 29. Device according to one of the preceding claims, characterized in that - in the stripping position behind the stripping blades (30, 31) - a trigger housing (44) is provided which comprises a trigger sensor (56) which is in relation to the axis of the respective line ends is longitudinally adjustable for stripping length adjustment, the sensor (56) preferably comprising a rocker arm (42) and a magnetic sensor (80) interacting with it.

Images