EP2372848B1 - Device and method for equipping cables with grommets - Google Patents

Description

The invention relates to an apparatus and a method for assembling cables with spouts, i. It is about applications in the field of cable processing or assembly. The device and method can also be applied to other elastic cable elements.

Spouts are silicone or similar material sealing elements typically used to seal plug housings or, for example, electrical appliances. For this purpose, a spout is first fitted to a stripped cable and then a metal contact is crimped. The contact is designed to hold the grommet to the cable.

There is a distinction between fully automatic and semi-automatic grommets. For example, fully automatic grommets are used in wire processing machines that automatically bring the stripped cable to and from the grommet device. Semi-automatic grommets are typically used as desktop devices, with the cable having to be manually inserted into a gripper of the grommet device.

In Tüllenbestückungsgeräten working according to simple assembly principles, the cable is inserted directly into the grommet. There is a risk of damaging the inner contour of the spout. In addition, this operation can not be performed with already stripped cables, as doing the strands of the cable would be bent. A stripping after Tüllenbestückung would indeed possible, but results in productivity losses and other disadvantages.

In more advanced Tüllenbestückungsgeräten the spout is widened before assembly by being pushed onto a Aufspreizhülse, which is designed as a hollow cylinder. During assembly, the cable is then inserted into this Aufspreizhülse and then pulled the Aufspreizhülse between the cable and, held by a scraper, spout. A Tüllenbestückungsgerät, in which the spouts are widened before being pushed onto a cable, is out, for example EP-B1-0 410 416 known.

From the document US 2008/155816 A1 is a technical solution known, which makes it possible to postpone a flexible grommet on a cable. There are a Tüllenübergabegerät and a Tüllenhaltegerät used. A grommet is supplied from a supply in the Tüllenhaltegerät. Attached to the grommet transfer device is a hollow, cylindrical body which is inserted into the grommet. This body is referred to here as a hollow cylinder. Before inserting the spout is transferred by the Tüllenhaltegerät in a transfer position. Then, a pressure body is used to exert counter-pressure against the spout from one side, while the hollow cylinder is inserted into the spout. During the described insertion a needle-shaped guide member sits in the interior of the hollow cylinder, that a tapered end of the needle protrudes from an opening of the hollow cylinder, which points in the direction of spout. So it is the hollow cylinder is inserted together with the inner-seated needle in the spout, while the pressure body as mentioned counterpressure exerts. Due to the fact that the needle tapers, solidarity insertion of hollow cylinder and needle is gentle. After the hollow cylinder has been inserted into the spout, the needle is withdrawn to allow space inside the hollow cylinder create for the insertion of a cable end. After the cable end has been inserted, the hollow cylinder is pulled back and thus passed the spout of the hollow cylinder on the cable.

In the following, the characteristic features and the advantages and disadvantages of the two most common assembly principles are shown.

An easier to maintain and faster-working grommet is out EP-B1-0 626 738 known. EP-B1-0 626 738 suggests a Tüllenbestückungsgerät, in which a spout is applied during the singulation of a conveyor rail on a mandrel and pushed on this mandrel from a smaller to a larger diameter, so as to expand the spout. After the mandrel has been pivoted into the correct position, a two-part expansion sleeve and also a two-part scraper surrounds the spout. By a relative movement of the scraper, the spout is pushed onto the expansion sleeve. The actual placement process is carried out by moving the expansion sleeve with the spout and the wiper together over the cable. In this case, the scraper stops before the expansion sleeve has completed its movement, which causes the stripping of the grommet on the cable.

It is considered an advantage of this approach that the spout is gradually expanded gently. In addition, the spout can not slip from the expansion sleeve, as it is held by the scraper. The disadvantage is that the two-part design of the expansion sleeve this has a relatively large outer diameter, since the wall thickness can not be reduced arbitrarily.

From the document EP-B1-1 022 821 is another device for Tüllenbestückung known. Here, the spout after a separation on a tubular, applied one-piece expansion sleeve. The grommet is not held in addition to the pivoting in the horizontal placement position. After embracing the spout with a two-part wiper, the assembly is done by moving over the cable with subsequent retraction of the expansion sleeve.

This approach has the advantage that the one-piece expansion sleeve can be made very thin-walled, whereby the spout only has to be slightly widened. The disadvantage is that it is difficult for certain types of tulle to postpone the spout on the expansion sleeve, without these then slipping off again. The great elasticity of the spout makes the process of postponing difficult.

Both loading principles have the disadvantage that the spout is not supported on the same shoulder when pushed onto the expansion sleeve and during stripping and thus compressed in two opposite directions. This can lead to an everting of the spout and generally results in a larger dispersion of the spout position on the cable in series production.

The invention aims to remedy this situation. The invention, as characterized in the main claims, solves the problem of a simple, safe and fast assembly of cables with elastic cable elements, e.g. Spouts, to enable.

Advantageous developments of the invention are specified in the dependent claims.

The inventive loading principle can be used in fully automatic or semi-automatic (spout) equipment. The former are used in wire processing machines that automatically bring the stripped cable to and from the assembly machine. Semi-automatic machines, on the other hand, are used as tabletop devices be used, the cable must be inserted by hand in a holding gripper.

Depending on requirements, however, cables are also fitted with other elastic cable elements, such as, for example, a heat-shrinkable tube or an annular element for cable feed-through. The invention can be applied not only to the fitting of cables with spouts, but also to the fitting with other elastic cable elements.

The inventive device is particularly suitable for use in cable processing machines.

According to the present invention, the spout is not slid onto a hollow cylinder but onto a needle and transferred from the needle to a cable. The transfer is thus preferably directly from the needle to the cable.

Reference to the accompanying figures, the present invention will be explained in more detail.

• Fig. 1A einen ersten Verfahrenschritt in einer schematischen Darstellung;
• Fig. 1B einen zweiten Verfahrenschritt in einer schematischen Darstellung;
• Fig. 1C einen dritten Verfahrenschritt in einer schematischen Darstellung;
• Fig. 1D einen vierten Verfahrenschritt in einer schematischen Darstellung;
• Fig. 1E einen fünften Verfahrenschritt in einer schematischen Darstellung;
• Fig. 1F einen sechsten Verfahrenschritt in einer schematischen Darstellung;
• Fig. 1G einen siebten Verfahrenschritt in einer schematischen Darstellung;
• Fig. 2 eine perspektivische schematische Darstellung einer Vorrichtung;
• Fig. 3 eine perspektivische schematische Darstellung von Details der Vorrichtung nach Fig. 2;
• Fig. 4 eine schematische Schnittdarstellung von Details der Vorrichtung nach Fig. 2;
• Fig. 5 eine weitere schematische Schnittdarstellung von Details der Vorrichtung nach Fig. 2;
• Fig. 6 eine weitere schematische Schnittdarstellung von Details einer Vorrichtung;
• Fig. 7 eine schematische Schnittdarstellung einer Nadel, die zum Einsatz kommen kann, und ein Stück eines zu bestückenden Kabels;
• Fig. 8 eine schematische Schnittdarstellung eines dünnen Endes der Nadel, die zum Einsatz kommen kann, und einer Tülle;
• Fig. 9 eine perspektivische schematische Darstellung einer Bestückungsvorrichtung.

Show it:

• Fig. 1A a first process step in a schematic representation;
• Fig. 1B a second process step in a schematic representation;
• Fig. 1C a third process step in a schematic representation;
• Fig. 1D a fourth process step in a schematic representation;
• Fig. 1E a fifth process step in a schematic representation;
• Fig. 1F a sixth method step in a schematic representation;
• Fig. 1G a seventh method step in a schematic representation;
• Fig. 2 a perspective schematic representation of a device;
• Fig. 3 a perspective schematic representation of details of the device according to Fig. 2 ;
• Fig. 4 a schematic sectional view of details of the device according to Fig. 2 ;
• Fig. 5 a further schematic sectional view of details of the device according to Fig. 2 ;
• Fig. 6 a further schematic sectional view of details of a device;
• Fig. 7 a schematic sectional view of a needle that can be used, and a piece of cable to be loaded;
• Fig. 8 a schematic sectional view of a thin end of the needle, which can be used, and a spout;
• Fig. 9 a perspective schematic representation of a placement device.

Core of the present invention is a novel mounting principle, which in the FIGS. 1A to 1G is shown schematically and described below. Above the FIGS. 1A to 1G an x-axis is shown. Using this x-axis different positions are defined to better describe the individual movements. It should be noted here that these are relative movements overall. These relative movements can also be realized differently than in the example of FIGS. 1A to 1G dargstellt.

An elastic grommet 20 or other elastic cable element is slid onto a needle 12, as in FIG Fig. 1A shown. Before pushing the spout 20 sits in a position x1. When sliding the spout 20 reaches the position x2, as in Fig. 1B shown.

The needle 20 has two outer diameters D1 and D2 (see also Fig. 7 ) and is provided at a first end 14 with the larger outer diameter D2 with a blind bore 16 having an inner diameter Di which is slightly larger than the outer diameter of the cable 30 to be equipped. This first end 14 of the needle 12 is at the beginning of the process held by closed centering jaws 13 of a centering gripper, which, as in Fig. 1A shown, stand in position x3. The centering gripper is only in Fig. 9 indicated schematically. The second end 15 of the needle 12 is in position x4 and has a smaller outer diameter D1, which corresponds approximately to the inner diameter of a through hole 21 of the unpopulated spout 20 (see Fig. 8 ). About this, initially freestanding end 15, the spout 20 is pushed onto the needle 12. This pushing-on movement P1 is carried out by a pusher 11 provided with spring-loaded jaws 44 (called pushing jaws), which can adapt to the variable diameter (from D1 to D2) along the longitudinal axis of the needle 12. The Aufschiebebewegung P1 sets in the example shown a linear distance, whose length is defined by the difference x2 - x1.

In Fig. 1B the state after pushing the spout 20 on the needle 12 is shown. The spout 20 including slide 11 is now located on the area of the needle 12, which has a larger outer diameter than the end 15 of the needle 12. The sprung jaws of the slide 11 allow an automatic adjustment of the distance of the jaws 44 (see Fig. 3 ) to the changing outer diameter of the needle 12.

The centering jaws 13 of the mounting device or the mounting device 100 are made stationary in this example and remain at the position x3. Here you can only perform an opening and closing movement perpendicular to the x-axis. You may be able to do it manually be moved and fixed to make adjustments depending on the size and shape of the spout 20 can.

In another embodiment (not shown), the centering jaws 13 are designed to be movable so that they can perform a feed movement in the direction of the cable 30 parallel to the x-axis. In this case, no drive is required (drive A4 in Fig. 9 ) for moving the cable 30.

Now, the cable 30 is inserted through the closed centering jaws 13 in the blind hole 16 of the needle 12. Instead of a blind hole 16 can also be another recording (eg, a through hole, or a mounting lug) are used for receiving a cable end. In this feed motion, the left end of the cable 30 travels a distance from the position x5 to the position x6. To insert the cable 30, the centering jaws 13 form a central opening 17, as in the FIGS. 1A to 1G can be seen. The state after the insertion of the cable 30 into the blind hole 16 of the needle 12 is in Fig. 1C shown. The direction of movement of the cable 12 is represented by the arrow P2. It should be noted here that the cable 30 can also be pushed into the needle 12, for example, before the grommet 20 has been pushed from the left. The cable 30 may also remain in the position x5 while the centering jaws 13 together with the needle 12 are moved towards the cable 30.

Is the sliding P1 of the spout 20 completed and the cable 30 inserted into the blind hole 16, as in Fig. 1C illustrated, the second end 15 of the needle 12 is held by a clamping element 10. For this purpose, the clamping element 10 is moved from a position x7 to a position x8. Then the centering jaws 13 of the centering gripper are opened. This moment is in Fig. 1D dargstellt. The opening movement of the centering jaws 13 is represented by the two arrows P3.

The actual assembly, ie the transfer of the spout 20 to the cable 30 is carried out by a backward movement P4 of the clamping element 10, as in Fig. 1D shown. In this backward movement P4, the clamping element 10 together with the needle 12 performs a movement from x8 to x9. By this backward movement P4, the needle 12 is pulled out between the spout 20 and the cable 30. The spout 20 is held by the fixed slide 11 in its position x2. The backward movement P4 is performed by the clamping member 10 which holds the needle 12 and moves it to the left.

After the assembled cable 30 has subsequently been moved to the right (from the position x6, for example to the position x5), as shown by the arrow P5 (opposite to P4), the needle 12 is moved back by the clamping member 10 by a movement P6 back to the starting position. The clamping element 10 carries out here together with the needle 12 a movement from the position x9 to the position x8. The left end of the needle 12 again reaches the position x4.

In Fig. 1F a state is shown in which the needle 12 has reached the starting position x4.

In the starting position x4, the needle 12 is now clamped again by the closing centering jaws 13. The arrows P7 indicate this closing movement of the centering jaws 13. The state with pinched needle 12 is in Fig. 1G shown.

Now, the clamping member 10 can release the needle 12 and the next spout 20 can be pushed onto the needle 12, as described above. The clamping element 10 is e.g. transferred back to position x7.

In the following, a preferred constructive embodiment of the invention is shown and with reference to the FIGS. 2 to 6 described.

The pusher 11 and the clamping element 10 are preferably integrated in a mounting head 40, which is part of a mounting device or a mounting device 100. Assuming that the grommets 20 are fed in a horizontal conveyor rail 42, as in the prior art described above, the placement head 40 is designed to pivot into the cable axis A and to provide the necessary longitudinal movements P1, P4, P6 in the direction of the cable axis A can make. The cable axis A runs parallel to the x-axis of the FIGS. 1A to 1G , The corresponding pivot drive for performing the pivotal movement in the cable axis A is not shown.

The loading principle of the invention can also be used in alternative Tüllenzuführungen, so for example a horizontal feed of the spouts 20 is possible. In Fig. 9 a corresponding mounting device 100 is shown, in which no pivoting movement of the Tüllenzuführung is provided.

It comes in the in the FIGS. 2 to 6 a singulation tool 41 is used, which comprises an inner mandrel 50 and a sleeve 51 shown. The dicing tool 41 has the task of bringing the spouts 20 out of the conveyor rail 42 into the placement head 40. For this purpose, the inner mandrel 50 is first pushed through the hole of the spout 20 and then pressed the spout 20 by lowering the sleeve 51 from the conveyor rail 42 into the mounting head 40. This process is in Fig. 4 to recognize where a provided with the reference numeral 20.1 spout is just pushed out of the conveyor rail 42 down in the direction P8.

The necessary for the movements of the mounting head 40 and the cable 30 drives A1 - A5 are in Fig. 9 shown purely schematically. The pivoting movement in the direction of the cable axis A can be motorized or with a pneumatic swivel drive. Depending on the requirements, the various longitudinal movements can be carried out pneumatically or by means of a programmable longitudinal axis.

The slide 11 is preferably constructed as a replaceable unit and designed so that it the spout 20 in the receiving bore 43, see Fig. 3 , can hold. Thus, the spout 20 can not fall out during the pivotal movement of the mounting head 40, the receiving bore 43 is formed accordingly. It would also be possible to hold the spout 20 in the receiving bore 43 by applying a vacuum. The two symmetrically arranged Aufschiebebacken 44 of the slide 11 are pressed with a compression spring 46 in the arranged behind the receiving bore 43 cone 45 of the slide 11. When pushing on the Aufschiebebacken 44, guided by the cone 45, can move radially apart and thus follow the contour (ie, the increasing outer circumference) of the needle 12. This is necessary because the needle 12 has a circumference that changes in the x-direction as described.

In the illustrated placement head 40, the clamping element 10 is designed as a collet 47. Such collets 47 are used for example in a similar form on lathes. The collet 47 is attached to a pull rod 49 and can be pulled with this in a sleeve 48, which causes the closing of the collet 47 and thus the clamping of the needle 12. The pull rod 49 has to close or open the collet 47 perform only a short stroke, which can be advantageously realized with a pneumatic cylinder, not shown, which performs movements in the direction P9.

To be able to carry out the steps necessary for the equipping principle, the collet 47 must be in the open and closed state within the placement head 40 can be moved. This relative movement is advantageously carried out pneumatically. To open or close the centering jaws 13, a commercially available pneumatic centering gripper 60 (see, eg Fig. 9 ) are used. The centering jaws 13 are to be designed so that the needle 12 is securely clamped in the closed state and that access through an opening 17 through to the blind hole 16 is possible. In order to prevent bending of the strands 31 of the cable 30, the bore diameter of the opening 17 of the centering jaws 13 of the centering gripper 60 is slightly smaller than the diameter Di of the blind hole (blind bore) 16 in the needle 12 form.

Since the spouts 20 to be processed vary widely in dimensions, the dimensions of the needle 12, the centering jaws 13, the pusher 11 and the collet 47, i. the dimensions of the clamping element 10, also variable. These parts should be easy to replace. However, the lengths or distances of the indicated by the arrows longitudinal movements P1, P4, P5, P6 can remain the same and adapted to the dimensions of the longest to be processed spouts 20.

Fig. 7 shows a schematic sectional view of a needle 12, which can be used according to the invention. The needle 12 shown has a blind hole 16 which is coaxial with the needle longitudinal axis B. The needle 12 is made in one piece in all embodiments. The outer diameter of the needle 12 is smaller at a first end 15 than at a second end 14. In the example shown, the first outer diameter D1 is constant in the region 15 and the second outer diameter D2 is constant in the region 14. Between these regions 15 and 14 there is a transition region 18, where the diameter of D1 smoothly merges into the diameter D2.

It is also possible that the diameter in the region 15 increases slowly to then in the end (in Fig. 7 on the right) to reach the maximum diameter D2.

The blind hole 16 preferably extends from the right end of the needle 12 in the direction of the second end 15th

Preferably, the blind hole 16 ends in all embodiments before the transition region 18. The diameter D1, D2, the length of the needle 12 and the depth of the blind hole 16 depend on the design and size of the spout 20 and from the position at which the spout 20 should sit on the cable 30. The inner diameter Di of the blind hole 16 is slightly larger than the outer diameter of the cable 30 including insulation.

A piece of cable 30 to be assembled is shown to the right of the needle 12 to illustrate the dimensions in this schematic.

Fig. 8 shows a schematic sectional view of the end piece 15 of a one-piece needle 12, which can be used according to the invention. Immediately adjacent to the needle 12, an exemplary grommet 20 having a central through-opening 21 is shown. In the finished state, the cable 30 passes through this passage opening 21 therethrough. Due to the elasticity of the grommet 20 this sits firmly on the cable 30th

Fig. 5 shows in a sectional view of further details of the embodiment which has already been described. Shown is a moment before the transfer of the spout 20 to the cable 30. The illustration in Fig. 5 is roughly equivalent to in Fig. 1C shown situation. The transfer takes place by the backward movement (arrow P4) of the clamping element together with needle 12, as described.

The invention also allows a reduced movement sequence to reduce the required free cable projection K, as in Fig. 6 indicated. For this purpose, before stripping the spout 20 of the needle 12 in Fig. 6 approached shown position. The needle 12 is slightly withdrawn after opening the centering jaws 13 and then the placement head 40 moves between the open centering jaws 13 to the cable 30 in the x direction. It should be noted that the clamping element 10 must approach in this case three different positions.

A small cable protrusion K is particularly advantageous in so-called "jacketed cables". Here are several cables wrapped with a coat. This coat must be removed before processing. The so-called shroud length should often be kept as small as possible and depends on the required cable projection K.

In Fig. 9 an exemplary placement apparatus 100 is shown having a common machine bed 61. The centering gripper 60 comprises the two centering jaws 13 and is seated on a first carriage 62, which can be moved linearly along the x-axis here. The first carriage 62 may comprise a corresponding first linear, spindle or pneumatic drive A1. This drive A1 is integrated in the carriage 62 or attached to this carriage 62. The centering jaws 13 hold in the moment shown the needle 12. The cable 30 has already been inserted through the opening 17 of the centering jaws 13 in the blind hole 16 of the needle 12. For this purpose, a second carriage 63 may be provided, which can be moved linearly along the x-axis here. The second carriage 63 may comprise a corresponding second linear, spindle or pneumatic drive A2. This drive A2 is integrated in the carriage 63 or attached to this carriage 63. The cable 30 can be held by two jaws 64, 65, for example. One of these jaws 64 (here the rear) can be movable, while the other jaw 65 (here the front) is fixed. The placement head 40 is not pivotable here, ie it is always aligned in the x direction, but can perform the feed movements and Rügzugsbewegungen parallel to the x-axis, as described above. The internal structure of the mounting head 40 can according to the FIGS. 5 or 6 be executed. At the placement head 40, a third carriage 66 may be provided, which can be moved linearly along the x-axis here. The third carriage 66 may comprise a corresponding third linear, spindle or pneumatic drive A3. This drive A3 is integrated in the carriage 66 or attached to this carriage 66.

In or on the mounting head 40 two suggestively illustrated drives A4, A5 are provided, which are designed for the movement of the clamping element 10 and the pull rod 49.

The various gripper movements and / or other movements are preferably carried out pneumatically.

In the Fig. 9 shown insertion device 100 can perform a movement of the centering gripper 60 in the cable direction. This is in principle not necessary for carrying out the assembly process according to the invention, but can be used, for example, for taking over the spout 20 (not shown). This movement of the centering gripper 60 in the cable direction is thus optional.

It should be noted that all movements may be relative movements. Preferably, these relative movements result from a combination of motions generated by the various drives A1-A5 (e.g., seated in or on the carriages 62, 63, 66). But it may also be single movements caused by only one drive.

For example, there are the following advantages of the invention. The spouts 20 or the other elastic cable elements must be spread less than the state of Technology. The treatment and handling of the spouts 20 and other elastic cable elements is gentler. In addition, the risk of damage is reduced. Furthermore, there is a higher accuracy of Tüllenposition on the cable 30 and it is a smaller cable protrusion K required.

Claims (12)

1. Equipping device (100) for equipping a cable (30) with an elastic cable element (20), the equipping device (100) comprising a body for pushing on the elastic cable element (20) and means for transferring the elastic cable element (20) from the body for pushing onto the cable (30), a needle (12), which serves as the body for pushing on, having an outside diameter (D1, D2) which is smaller at a first end (15) than at a second end (14), and the equipping device (100) comprising centring jaws (13) for fixing the needle (12) in the region of the second end (14), the centring jaws (13) forming in the closed state an orifice (17), characterized in that the needle (12) is provided in the region of the second end (14) with a receptacle (16) for the coaxial reception of one end of the cable (30), and the orifice (17) of the centring jaws (13) serves as access to the receptacle (16) of the needle (12), and in that the equipping device (100) comprises a pusher-on (11) for pushing the elastic cable element (20) onto the needle (12) from the first end (15) of the needle (12) in the direction of the second end (14) and a clamping element (10) for holding the needle (12) in the region of the first end (15).
2. Equipping device (100) according to Claim 1, additionally comprising:

   - a drive (A3) for executing a relative movement (P1) of the pusher-on (11) with respect to the centring jaws (13),

   - a drive (A4, A5) for executing a relative movement of the clamping element (10) with respect to the centring jaws (13),

   - a drive (A2) for executing a relative movement (P2) of the cable (30) with respect to the centring jaws (13), and

   - a drive (A1) for opening and closing the centring jaws (13).
3. Equipping device (100) according to Claim 1 or 2, the pusher-on (11) being provided with sprung pushing-on jaws (44), so as to be adaptable to a variable outside diameter of the needle (12) during a pushing-on movement (P1) along the needle longitudinal axis (B).
4. Equipping device (100) according to Claim 1, 2 or 3, the pusher-on (11) being fixable in a position while the needle (12) executes a backward movement (P4) by means of the corresponding drive.
5. Equipping device (100) according to one of the preceding claims, the clamping element (10) being designed as a collet chuck (47) which comprises a tension rod (49) and is seated in a sleeve (48), the collet chuck (47) being capable of being opened or closed by means of a displacement movement (P9).
6. Equipping device (100) according to one of the preceding claims, the pusher-on (11) and the clamping element (10) being integrated into an equipping head (40).
7. Equipping device (100) according to one of the preceding claims, the elastic cable element (20) being a grommet (20).
8. Method for equipping a cable (30) with an elastic cable element (20), having the following steps:

   - holding of a needle (12) by centring jaws (13), the needle (12) having an outside diameter (D1, D2) which is smaller at a first end (15) than at a second end (14), and the needle (12) having in the region of the second end (14) a receptacle (16) for the coaxial reception of one end of the cable (30),

   - pushing of the elastic cable element (20) onto the needle (12) from the first end (15) of the needle (12) in the direction of the second end (14), a pusher-on (11) being used for pushing on,

   - execution of a relative movement for introducing the cable (30) through an orifice (17) of the centring jaws (13) into the receptacle (16) of the needle (12),

   - holding of the needle (12) by a clamping element (10) in the region of the first end (15),

   - opening of the centring jaws (13),

   - transfer of the elastic cable element (20) from the needle (12) onto the cable (30) by the execution of a relative backward movement (P4) of the needle (12), the elastic cable element (20) being held in position by the pusher-on (11) and being pushed onto the cable (30) during the backward movement (P4), and

   - execution of a relative movement for removing the cable (12) together with the elastic cable element (20).
9. Method according to Claim 8, the pusher-on (11) being provided with sprung pushing-on jaws (44) and being adapted automatically to a variable diameter of the needle (12) when the elastic cable element (20) is being pushed on.
10. Method according to Claim 8 or 9, the pusher-on (11) being fixable in a position while the needle (12) executes the backward movement (P4) by means of the corresponding drive.
11. Method according to one of the preceding Claims 8 to 10, the clamping element (10) being designed as a collet chuck (47) which comprises a tension rod (49) and is seated in a sleeve (48), the collet chuck (47) being opened or closed by means of a displacement movement (P9).
12. Method according to one of the preceding Claims 8 to 11, the elastic cable element (20) being a grommet (20).

Images