WO2021122680A1

WO2021122680A1 - Stripping apparatus for cables

Info

Publication number: WO2021122680A1
Application number: PCT/EP2020/086333
Authority: WO
Inventors: Peter Khu
Original assignee: Peter Khu
Priority date: 2019-12-18
Filing date: 2020-12-16
Publication date: 2021-06-24
Also published as: EP4078744A1

Abstract

The present disclosure relates to a stripping apparatus (1) for cables (2). The stripping apparatus (1) has at least one working tool (3) for mechanically processing a cable sheath (4) to be separated and at least one clamping apparatus (5) for holding the cable (2). At least one working tool (3) can be brought into working contact with the cable sheath (4) on an engagement surface (6) encompassing the cable sheath (4). The stripping apparatus (1) has at least one auxiliary apparatus (7), by means of which the cable sheath (4) can be thermally and/or mechanically impaired in the region of the engagement surface (6) in a manner adapted to the working tool (3).

Description

Stripping device for cables

The present disclosure relates to devices and methods for stripping cables.

Shielded cables essentially consist of a shielded line arrangement in a cable core, which has one or more conductors and at least one shielding layer, and a cable sheath. The shielding layer and the cable jacket are arranged concentrically around the line arrangement, the shielding layer shielding the inner conductor or conductors from electrical or magnetic fields and the cable jacket arranged around the shielding layer in particular offering mechanical protection against external influences.

To connect shielded cables, it is necessary to cut the protective sheath around the cable at a certain distance from the cable end and then pull it off the shielding layer. However, the shielding layer must remain intact, since otherwise correct shielding in the area of the connection point cannot be guaranteed.

The shielding layer generally consists of an extremely thin and sensitive material, for example a thin aluminum foil, plastic foil, a filigree wire mesh or several such layers. The protective jacket, on the other hand, must be made of a resistant material, for example of resistant plastics such as PUR, PVC, silicone, etc.

The stripping of shielded cables is therefore mostly done by hand and requires a sure instinct and experience. Known mechanical aids, such as wire strippers or rotary cutters, also require very careful and experienced handling, since they can also easily damage the shielding.

The installation of numerous shielded cable connections, as required in the industrial production of electric cars, can therefore be a time-consuming undertaking.

EP 2693581 A1 discloses a device for stripping shielded cables with a blade arrangement which can be rotated around the cable and the feed position of which can be changed in order to make a cut in the protective jacket. An electronic detection device detects when the blades come into contact with the shield. However, it is to be feared that the detection device will usually strike too late because the screen or the conductor has already been cut or injured.

It is the object of the present disclosure to provide devices and methods with which the insulation of cables, especially shielded cables Cables can be carried out quickly, easily and safely even by inexperienced users, or can also be used as a component with high process reliability in automated cable assembly.

According to a first aspect, these goals are achieved by a stripping device for cables, the stripping device having at least one working tool for mechanical processing of a cable jacket to be cut and at least one clamping device for holding the cable, the at least one working tool being inserted into an attack surface surrounding the cable jacket Working contact with the cable sheath can be brought, the stripping device having at least one auxiliary device with which the cable sheath can be thermally and / or mechanically impaired in the area of the attack surface in a manner tailored to the working tool. The thermal and / or mechanical impairment of the cable jacket makes it easier for the working tool to cut through the cable jacket, with the layers underneath being better protected.

Advantageously, the working tool can be driven to rotate around the cable. As a result, the effect of the work tool is evenly distributed over the circumference of the cable jacket.

The working tool can advantageously have at least one separating element, which preferably has two working wheels. This allows a good adaptation to cables of different strengths and types.

In an advantageous embodiment, at least two working wheels can have different cross-sections, the two working wheels preferably being arranged at different distances from the cable axis. In this way, advantageous processing of the cable jacket can be realized, for example the work wheel arranged closer to the cable axis (with reference to the point of contact) having a more obtuse cross-sectional geometry than the other, more distant work wheel. The duller work wheel does not cut into the cable jacket, but displaces it in a rolling or rolling movement, so that the material of the cable jacket in this area quickly becomes fatigued and brittle. The duller work wheel penetrates deeper and deeper into the fatigued material, for example only then does the other work wheel with the sharper cross-sectional geometry come into contact with the material and cut into it. The sharper working wheel preferably never comes into contact with the more solid layers (which must not be destroyed) arranged below the cable jacket, since the blunt working wheel rolls on it and does not penetrate deeper into the material.

In an advantageous embodiment, the auxiliary device can generate tensile, compressive, torsional and / or bending stresses in the cable sheath in the area of the attack surface, which are tailored to the effect of the work tool. This supports the work tool and facilitates the subsequent removal of the severed part of the cable jacket.

In a further advantageous embodiment, the clamping device can have a first clamping element and a second clamping element for the cable, the first clamping element and the second clamping element being spaced from one another to form the contact surface, the second clamping element translationally in relation to the first clamping element in at least one direction and / or is rotatable. In this way, almost any tensile, compressive, torsional and / or bending stresses can be generated in the cable jacket in a simple manner, which weaken the cable jacket in a defined area and improve the working tool.

The auxiliary device can advantageously have at least one nozzle device with which a working fluid is directed onto the attack surface. The working fluid can have a cutting effect and / or a thermal effect on the material of the cable jacket. For example, the working fluid can be a jet of water which acts on the cable jacket with high pressure and cuts it off. On the other hand, the working fluid can cool the material of the cable jacket, for example to make it more brittle, or it can heat this material in order to soften, melt and / or burn it through.

Before the fluid is ejected, the nozzle device can be aligned with the parting line previously produced by the working tool. With the help of more complex nozzle arrangements, however, it is also possible to direct the fluid onto the attack surface during machining in a manner tailored to the working tool. The nozzle arrangement can, for example, be arranged in a fixed manner next to the rotating separating elements and direct the fluid jet onto the attack surface. Alternatively, the nozzle arrangement could also rotate with the separating elements.

The working fluid can advantageously be a heated gas, in particular hot air. This allows a particularly simple implementation of the device. The hot gas can, for example, be directed towards the remaining material of the cable sheath in a short ejection towards the end of the machining process (or even if the mechanical machining of the cable jacket by the working tool has already been completed) in order to thermally cut any material residues that may have remained unseparated.

Since the hot gas is only released very briefly and abruptly, it is possible to avoid impairment of the layers of the cable underneath, in particular the shielding layer. The hot air can have a temperature between 600 ° C and 1000 ° C, for example. With a short ejection you can use it Safe separation of thin separating layers made of plastic or aluminum, as they are often arranged in cables as the innermost layer of the cable jacket around the shielding layer.

The nozzle device can advantageously be connected to a pressure vessel in which the working fluid is heated under pressure. For example, before the stripping process, the pressure vessel can be filled with compressed air via a corresponding supply line, the connection from the pressure vessel to the nozzle device being closed by a shut-off valve. Immediately before the insulation is stripped or while the working tool is already activated, the compressed air in the pressure vessel is strongly heated by a heating unit provided therein, the pressure also increasing further until a sufficient operating pressure and a sufficient operating temperature are reached. At the appropriate point in time, the shut-off valve is opened and a “shot” of hot air is directed via the nozzle device onto the contact surface or into the joint that has already been created. Remaining thin layers are reliably cut through without affecting the shielding layer of the cable. The nozzle device can, for example, have a plurality of nozzle openings arranged in a ring around the cable in order to distribute the effect of the working fluid evenly over the entire circumference of the cable.

The nozzle device can optionally be combined with a clamping device disclosed herein for applying tensile and / or bending stresses, whereby the respective effects advantageously reinforce and complement one another.

In a further aspect, the present disclosure relates to a clamping device for a stripping device disclosed herein, the clamping device having a first clamping element and a second clamping element for a cable, the first clamping element and the second clamping element being spaced apart from one another to form an attack surface surrounding the cable sheath, wherein at least one working tool of the stripping device can be brought into working contact with a cable sheath of the cable on the contact surface and wherein the second tensioning element can be moved translationally and / or rotationally in relation to the first tensioning element in at least one direction, this movement being in the area of the contact surface tension - And / or bending stresses generated in the cable sheath, which can be matched to the work tool.

In a further aspect, the present disclosure relates to a nozzle device for a stripping device disclosed herein, the nozzle device having at least one nozzle opening with which a working fluid can be directed onto the contact surface of a cable clamped in the stripping device.

In an advantageous manner, a plurality of nozzle openings can be arranged in a substantially annular arrangement around the contact surface of the cable in the nozzle device. For example, the nozzle openings in a clamping element, be integrated into the jaws of a collet, for example. As a result, the nozzle openings can be positioned by moving the clamping element.

In a further aspect, the present disclosure relates to a method for stripping a cable with a stripping device disclosed herein, the method having the following steps: arranging the cable in the clamping device, processing the cable jacket with the work tool, thermally in a manner that is tailored to the work tool and / or mechanically impairing the cable jacket in the area of the attack surface with the auxiliary device. This allows an advantageous application of the devices disclosed herein for stripping cables.

In an advantageous manner, a working fluid can be directed onto the attack surface in order to cut through an innermost layer of the cable jacket, preferably after the cable jacket has been processed with the working tool. This can be done in an advantageous manner with a nozzle device disclosed herein.

Preferably, during the processing of the cable jacket with the working tool, tensile and / or bending stresses can be generated in the cable jacket in an advantageous manner in the area of the attack surface. This can be done in an advantageous manner with a clamping device disclosed herein.

The present invention is explained in more detail below with reference to FIGS. 1 to 4, which show exemplary, schematic and non-limiting advantageous embodiments of the invention. It shows

1 shows a sectional view of a stripping device during the processing of a cable jacket,

2 shows a plan view of the arrangement of the working tools of the stripping device,

3 shows a further sectional illustration of the stripping device shown in FIG. 1 during a later work step and

FIG. 4 shows a sectional illustration of an auxiliary device 7 of the stripping device along the line IV-IV in FIG. 3.

1 shows a cable 2 during processing in a stripping device 1. The processing serves to cut through a cable sheath 4 of the cable 2 in a defined area and to pull off part of the cable sheath 4 from the cable 2. The area at which the cable jacket 4 is to be severed is referred to as the attack surface 6 in connection with the present disclosure. For stripping, the cable 2 is first automatically or manually inserted into the stripping device 1 and clamped in a clamping device 5 in such a way that the contact surface 6 is appropriately arranged in relation to a working tool 3 of the stripping device 1.

The working tool 3 can be any stripping tool known in the prior art, which enables the cable sheath 4 to be severed while at the same time protecting the cable parts arranged within the cable sheath 4. In particular, it must be ensured that a shielding layer (for example a copper wire mesh or the like) is not damaged by the working tool 3.

The working tool 3 shown by way of example in FIG. 3 has an essentially disk-shaped rotating body 15 and a separating element 8. The rotary body 15 is arranged on a bearing 14 so as to be rotatable about the axis of the cable 2. A passage 16 for the cable 2 is provided in the center of rotation of the rotating body 15. The separating element 8 is arranged so as to be radially displaceable with respect to the rotary body 15, so that the separating element 8 of the working tool 3 can be brought into abutment on the cable sheath 4 by this radial movement under sufficient contact pressure in the area of the contact surface 6. While the rotating body 15 rotates around the cable 2, the separating element 8 moves around the circumference of the cable 2 and in the process cuts through the cable sheath. The separating member 8 can, for example, have a blade which cuts through the cable jacket 4, it being necessary to ensure that the blade does not completely penetrate the cable jacket 4, so that the layers underneath remain intact. The separating element 8 can also be designed as a work wheel or a work wheel arrangement with several work wheels, the work wheel being able to process the cable jacket 4 either by cutting or by flexing. In the latter case, the cable sheath 4 is worn down by a blunt, deforming movement to such an extent that it either breaks by itself in the area of the attack surface 6 or can be cut through in a simple manner.

The movement of the separating element 8 relative to the rotating body 15 can be brought about, for example, by corresponding drive or adjusting elements, or by centrifugal force, as is described further below. The separating element 8 can be arranged, for example, on a slide 17 which is arranged on the rotating body 15 so as to be radially displaceable.

The clamping device 5 has a first clamping element 10, which is preferably arranged in a fixed position and in which one side of the cable 2 is clamped. For example, the first tensioning element 10 can be provided for fixing the “long end” of the cable 2, that is to say, for example, the end arranged on a cable drum. As a “short End ”of the cable 2, on the other hand, denotes the end of the cable from which part of the cable jacket is to be removed, ie the end to be stripped.

To strip the insulation, the short end of the cable 2 is pushed into the first tensioning member 10 from the rear side until the contact surface 6 is located in the corresponding area of the working tool 3. The short end of the cable protrudes beyond the working tool 3. On the side of the short end of the cable 2, a second tensioning element 10 'is provided, which clamps the second end of the cable 2 during the stripping process.

During processing, the cable 2 is thus clamped in the clamping device 5 in such a way that an area remains free between the first clamping element 10 and the second clamping element 10, in which the contact surface 6 is located. The working tool 3 is then driven to rotate by a motor (not shown), the separating element 8 moving towards the cable sheath 4 and cutting through this circumferentially at the attack surface 6. The separating member 8 can either completely cut through the cable jacket, or part of the material to be cut can remain intact. This remaining part can, for example, comprise a thin separating film made of aluminum or plastic, which in the case of some cables is arranged around a shielding layer to protect them.

The stripping device 1 has an auxiliary device 7 which thermally and / or mechanically supports the severing of the cable jacket 4. The auxiliary device 7 comprises the second tensioning element 10 ', which can be moved and driven in a rotational and / or translational manner in several directions of movement. The drive can take place via conventional drive elements which, for the sake of clarity, are not shown in the figures. The tensioning element 10 ‘can be moved in such a way that tensile, compressive, torsional and / or bending stresses are introduced in the area of the contact surface 6 in the cable jacket 4, which are dynamically matched to the movement of the working tool 3. The second clamping element 10 ‘is moved in relation to the first, preferably stationary clamping element 10. If necessary, both tensioning members can be moved, the relative movement generating the corresponding tensions in the cable sheath 4.

For a better understanding, FIG. 1 shows a coordinate system, the z-axis of which runs along the cable axis, the x-axis and the y-axis being arranged in a plane which represents a “cutting plane” and the cable in the area of the attack surface 6 crosses. The possible movements of the second clamping element 10 'are described below with reference to this coordinate system.

The second tensioning element 10 ′ can execute rotary movements about the x and / or y axes, with a bending stress being introduced into the cable, the maximum of which is in the area of the attack surface 6. The respective voltage maxima can be changed dynamically by changing the arrangement of the bending angle.

- The second tensioning element 10 ‘can perform a translatory movement along the z-axis, a tensile or compressive stress being generated in the cable sheath 4.

- The second tensioning element 10 ‘can perform translational movements along the x and / or y-axis, on the one hand bending stresses are generated in the cable jacket 4 and on the other hand, for example, the pressing force of the separating element 8 can be changed dynamically.

- The second tensioning element 10 ‘can perform a rotary movement about the z-axis, a torsional tension being generated in the cable sheath 4 in the area of the attack surface 6.

The movement patterns described above can be combined in any way and / or dynamically changed in order to generate a desired tension pattern in the cable sheath. The movement is preferably matched to the respective position of the separating element 8. For example, in the area in which the separating element 8 engages the cable sheath 4, a stress maximum can be generated in the cable sheath 4 which moves along with the separating element 8.

The auxiliary device 7 can be combined with any work tools 3, FIG. 2 showing a further possible embodiment of a work tool 3 in a plan view along the cable axis. Similar to the device shown in FIG. 1, the working tool 3 again comprises a disk-like rotary body 15 which is rotatably arranged in a bearing 14. A cable 2 to be stripped can in turn be arranged in a stationary manner through a passage 16 in the center of rotation. The cable 2 can be held in a clamping device which, for example, can essentially correspond to the clamping device 5 shown in FIG. 1 and which is not shown in FIG. 2 for the sake of clarity.

A slide 17 is arranged on the rotary body 15 and can be moved radially, ie transversely to the cable axis. The carriage 17 carries a work wheel arrangement with two work wheels 9, 9 ′ and comprises an eccentric weight 18. The work wheel arrangement and the eccentric weight are arranged on opposite sides of the cable 2. When the rotating body 15 rotates with the radially movable slide 17, the weight 18 generates a centrifugal force F which presses the working wheels 9, 9 ′ against the cable jacket 4. The pressing force can be adjusted via the rotation speed. If necessary, one or more counter-pressure rollers can be attached to the rotating body 15 (not shown) may be provided, which are arranged on the side of the cable 2 opposite the working wheels 9, 9 'and unroll on this side. The counter-pressure rollers stabilize the cable 2 in the area of the attack surface 6 during the stripping.

The two working wheels 9, 9 ‘can, for example, have a different cross section. For example, the second working wheel 9 'in the area that comes into contact with the cable jacket 4 can have a more blunt cross-section than the first working wheel 9. If necessary, the blunt, second working wheel 9' can be arranged a little closer to the cable axis than the first, sharper work wheel 9. As a result, the cable jacket 4 is milled by the blunt second work wheel 9 'before the first work wheel 9 comes into contact with the jacket surface. The material of the cable jacket 4 is thereby first worn down and weakened by the blunt, second working wheel 9 ‘. The second work wheel 9 penetrates deeper and deeper into the weakened material until the first work wheel 9, which essentially corresponds to a cutting wheel, also comes into contact with the cable jacket 4 and processes it in a cutting manner. As soon as the second working wheel 9 ‘has at least substantially completely penetrated the jacket, it rolls onto the harder layers underneath (e.g. a shielding layer made of a wire mesh) without penetrating into it. As a result, the first working wheel 9, which is designed as a cutting wheel, cannot come into contact with the wire mesh either, which reliably protects it.

When the cable jacket 4 has been sufficiently severed by the working wheels, the rotating body 15 is braked to a standstill and the carriage 17 moves back into a starting position, the working wheels 9, 9 ‘being moved away from the cable jacket. To this end, the carriage 17 can either be spring-loaded and / or the return movement can be carried out with the aid of gravity by positioning the rotary body 15 in such a way that the eccentric weight 18 is arranged above the cable 4 and the working wheels 9 and these downwards, away from pushes the cable 4.

The separation process described above with reference to FIG. 2 can be carried out in an analogous manner with a single separation element 8, as is shown in FIG. The carriage 17 is indicated only schematically in dashed lines in FIG. 1.

After the rotating severing of the cable jacket 4, the auxiliary device 7 is brought back into the straight starting position, ie in a position in which the cable 2 is held in a straight orientation by the first tensioning element 10 and the second tensioning element 10 '. The second tensioning element 10 ′ can then be moved in the direction of the positive z-axis, the severed part of the cable jacket 4 being pulled off the cable 2. In an advantageous embodiment, the second tensioning element 10 ' and the working tool 3 with the bearing 14 can be arranged on a common guide, the unit comprising working tool 3, bearing 14 and second tensioning element 10 'being moved together along the cable axis (ie in the direction of the z-axis). If the second tensioning element 10 'is now withdrawn in order to pull off the stripped part of the cable jacket 4, the working tool also moves with it, so that the stripped end of the cable 2 clamped in the first tensioning element 10 is freely accessible and can be accessed using a corresponding test device (not shown). or can be checked by a visual inspection. The first tensioning element 10 is then released and the fully stripped cable can be removed from the stripping device 1.

3 shows a further embodiment of a stripping device 1, which is provided with an auxiliary device 7 for thermally influencing the cable jacket 4. The stripping device 1 shown in FIG. 3 corresponds essentially to that shown in FIG. 1. In the position shown in FIG. 3, the separating element 8 is in a position remote from the cable sheath 4. The cable sheath 4 has already been processed by the separating element 8 and a separating joint has already been introduced into the cable sheath 4 in the area of the attack surface 6.

The second clamping element 10 ‘has a nozzle device 11 which connects a number of nozzle openings 13 in the area of the contact surface of the clamping element 10‘ with a pressure vessel 12 via channels. After the cable jacket 4 has been processed by the working tool 3, the nozzle openings 13 can be arranged directly above the parting line. For this purpose, the second clamping element 10 wird is released, adjusted in the direction of the negative z-axis and, when the nozzle openings 13 are located directly above the parting line, closed again. Since the second clamping element 10 and the work tool 3 are again moved together along the z-axis, a collision of the clamping element 10 with the work tool 3 can be excluded.

The pressure vessel 12 is filled with a compressed gas, for example compressed air, and closed with a valve 19. During the first steps of the stripping process (for example while the working tool 3 is driven to rotate), the compressed gas in the pressure vessel 12 is heated to an operating temperature, for example in the range between about 600 ° C and 1000 ° C, with a heating unit 20, the pressure being increased to an operating pressure, for example about 20 bar, increases. The operating temperature and the operating pressure are matched to the respective design of the stripping device and to the design of the cable 2 to be stripped.

The nozzle openings 13 can, for example, be provided in an annular arrangement in the second clamping element 10 '. FIG. 4 shows a sectional view along the line IV-IV shown in FIG. 3, the annular arrangement of the nozzle openings 13 is recognizable. The individual clamping elements of the collet 10 'are in contact with the cable jacket 4, the nozzle openings 13 being directed into the parting line. As can be seen in the cross section of the cable 2 shown in Fig. 4, after processing with the working tool 3, a residual layer 21 of the cable jacket 4 may remain, which was not completely severed and which now continues to surround the core of the cable to be exposed. This residual layer 21 can, for example, be part of the outer material of the cable sheath 4, or an additional separating film, which can be arranged between the outer material of the cable sheath 4 and a shielding layer of the cable 2, for example for reasons of production technology. It is now necessary to cut through this remaining layer 21 completely without affecting the cable core to be exposed.

In order to separate this residual layer 21, the valve 19 is now opened and the previously heated pressurized gas flows via the nozzle device 11 and the nozzle openings 13 into the separating joint, where the residual layer 21 is destroyed by the high temperature. Since the compressed gas only flows out over a very short period of time (in the manner of a "compressed air shot"), the cable core (the outermost layer of which can be a shielding layer made of copper or steel wire, for example) is not damaged. The amount and the duration of the hot compressed gas flowing out can be determined via the volume and the pressure provided in the pressure vessel 12.

After the remaining layer 21 has been severed with the aid of the auxiliary device 7, the part of the cable jacket 4 to be peeled off that is now completely separated can be peeled off by the second collet 10 'in the manner described above. After the compressed air shot, the valve 19 is closed again and the pressure vessel 12 can be refilled with fresh compressed gas for the next compressed air shot.

In the embodiments described above, the nozzle device 11 is integrated into a clamping member of the clamping device 5. However, this is not a mandatory requirement. Rather, the nozzle device can also be designed as a unit that is separate from the clamping element. The construction of such and other alternative embodiments are well within the ability of those of ordinary skill in the art having knowledge of the teachings disclosed herein.

It should be noted that the stripping process disclosed herein can not only be carried out “manually” with the aid of the devices disclosed herein, but can also be automated to a high degree or completely.

The individual features and variants specified in the individual configurations and examples can be freely combined with those of the other examples and configurations (unless otherwise stated on site) and, in particular, for Characterization of the invention in the claims can be used without necessarily taking along the other details of the respective embodiment or the respective example.

Reference symbols: Stripping device 1, cable 2

Working tool 3 Cable sheath 4 Clamping device 5 Attack surface 6 Auxiliary device 7 Separating element 8 Working wheels 9, 9 ‘Clamping element 10, 10 'Nozzle device 11 Pressure vessel 12 Nozzle opening 13 Bearing 14

Rotary body 15 passage 16 carriage 17 eccentric weight 18 valve 19 heating unit 20 residual layer 21

Claims

1. Stripping device (1) for cables (2), the stripping device (1) having at least one working tool (3) for mechanical processing of a cable jacket (4) to be cut and at least one clamping device (5) for holding the cable (2), wherein the at least one working tool (3) can be brought into working contact with the cable jacket (4) on an attack surface (6) surrounding the cable jacket (4), characterized in that the stripping device (1) has at least one auxiliary device (7) which the cable sheath (4) in the area of the attack surface (6) can be thermally and / or mechanically impaired in a manner tailored to the working tool (3).

2. Stripping device (1) according to claim 1, characterized in that the working tool (3) can be driven to rotate around the cable (2).

3. Stripping device (1) according to claim 2, characterized in that the working tool (3) has at least one separating member (8), which preferably has two working wheels (9, 9 ‘).

4. Stripping device (1) according to claim 3, characterized in that at least two working wheels (9, 9 ‘) have different cross-sections, the two working wheels (9, 9‘) are preferably arranged at different distances from the cable axis.

5. Stripping device (1) according to one of claims 1 to 4, characterized in that the auxiliary device (7) in the area of the attack surface (6) generates tensile, compressive, torsional and / or bending stresses in the cable sheath (4), which on the effect of the work tool (3) are coordinated.

6. Stripping device (1) according to claim 5, characterized in that the clamping device (5) has a first clamping element (10) and a second clamping element (10 ') for the cable (2), wherein the first clamping element (10) and the second clamping element (10 ') are spaced apart from one another to form the engagement surface (6), the second clamping element (10') being translationally and / or rotationally movable in at least one direction with respect to the first clamping element (10).

7. Stripping device (1) according to one of claims 1 to 6, characterized in that the auxiliary device (7) has at least one nozzle device (11) with which a working fluid is directed onto the engagement surface (6).

8. Stripping device (1) according to claim 7, characterized in that the working fluid is a heated gas, in particular hot air.

9. Stripping device (1) according to claim 8, characterized in that the nozzle device (11) is connected to a pressure vessel (12) in which the working fluid is heated under pressure.

10. Clamping device (5) for a stripping device (1) according to one of claims 1 to 9, characterized in that the clamping device (5) has a first clamping element (10) and a second clamping element (10 ') for a cable (2) , wherein the first tensioning element (10) and the second tensioning element (10 ') are spaced apart from one another to form an attack surface (6) surrounding the cable jacket (4), at least one working tool (3) of the stripping device (1) on the attack surface (6 ) can be brought into working contact with a cable sheath (4) of the cable (2) and wherein the second tensioning element (10 ') can be moved translationally and / or rotationally in relation to the first tensioning element (10) at least in one direction, this movement tensile and / or bending stresses generated in the cable sheath (4) in the area of the attack surface (6), which can be adapted to the working tool (3).

11. Nozzle device (11) for a stripping device (1) according to one of claims 1 to 9, characterized in that the nozzle device (11) has at least one nozzle opening (13) with which a working fluid is applied to the engagement surface (6) in the Stripping device (1) clamped cable (2) can be straightened.

12. Nozzle device (11) according to claim 11, characterized in that a plurality of nozzle openings (13) can be arranged in a substantially annular arrangement around the engagement surface (6) of the cable (2).

13. A method for stripping a cable (2) with a stripping device (1) according to any one of claims 1 to 9, characterized in that the method has the following steps:

- Arranging the cable (2) in the clamping device (5),

- Processing of the cable jacket (4) with the working tool (3),

- In a manner adapted to the working tool (3), thermally and / or mechanically impairing the cable jacket (4) in the area of the attack surface (6) with the auxiliary device (7).

14. The method according to claim 13, characterized in that to cut through an innermost layer of the cable jacket (4), preferably after the cable jacket (4) has been processed with the working tool (3), a working fluid is directed to the attack surface (6).

15. The method according to claim 13 or 14, characterized in that preferably during the processing of the cable jacket (4) with the working tool (3) in the area of the attack surface (6) tensile, compressive, torsional and / or bending stresses in the cable jacket ( 4) can be generated.