Cable straightening device for removing kinks

Abstract

To provide an improved straightening apparatus by avoiding the drawbacks of known straightening apparatuses.SOLUTION: A straightening apparatus (1) for cables comprises: a first roller group (2) having a plurality of rollers; and a second roller group (3) having the plurality of rollers opposite the first roller group (2). The cables alternate in a transport direction between the rollers of the first roller group (2) and the rollers of the second role group (3). The straightening apparatus (1) further comprises an infeed device (5). By the infeed device (5), the first roller group (2) can be displaced in a closing direction against the second roller group (3). In order to secure a position of the first roller group (2) displaced in the closing direction by the infeed device (5), the straightening apparatus (1) comprises a safety device which blocks backward movement of the first roller group (2) against the closing direction.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a kink removal device for removing kinks of a cable according to the preamble of claim 1.

Background Art

[0002] The kink removal device can be part of a cable processing machine. Such a cable processing machine is used for the assembly of electrical cables. During cable assembly, the cable can be cut to a certain length, the covering can be stripped off, and then the cable end can be crimped. The cable processing machine can further include a grommet station. In this grommet station, the stripped cable end is fitted into the grommet before crimping.

[0003] Cables such as insulated strands or solid conductors made of copper or steel, which are processed on the cable processing machine, are usually provided in drums, on rolls, or as bundles, and thus, after being unwound, are provided in a somewhat curved or twisted state. In order to be able to perform process steps such as covering stripping, crimping, and in some cases fitting into a connector housing provided on the cable processing machine with high reliability, a straight cable is important. In order to remove the kinks of the cable so as to be as straight as possible, these cables are usually pulled through a kink removal device attached to the inlet of the processing machine with the help of the drive part of the cable processing machine.

[0004] A generally comparable detangling device is known, for example, from European Patent Application Publication No. 2399856. The detangling device has an upper roller group and a lower roller group. The cable to be detangled is passed between the rollers of the two roller groups in the transport direction. The roller groups can be moved relative to each other to set the detangling parameters. Starting from an open position in the closed direction, which is perpendicular to the cable transport direction, the upper roller group is first displaced relative to the lower roller group to the closed position. In this closed position, the parallel rollers of the upper and lower roller groups are on the cable and in contact with the cable. This process is also known and is known to those skilled in the art under the name "feeding". The spacing between the rollers can be set manually using a rotary knob. An additional quick-release lever allows the detangling device to be quickly opened and closed when the cable is removed from and inserted between the rollers. Alternatively, the spacing between the rollers can be set automatically. For this purpose, a feeding mechanism for displacing the upper roller group relative to the lower roller group is provided, for example, with a motor drive unit. However, this modification is technically complex and costly. [Prior art documents] [Patent Documents]

[0005] [Patent Document 1] European Patent Application Publication No. 2399856 [Overview of the project] [Problems that the invention aims to solve]

[0006] The object of the present invention is to avoid the drawbacks of known hair straightening devices and, in particular, to provide an improved hair straightening device of the form described first. According to the present invention, this task is achieved by a hair straightening device having the features of claim 1. [Means for solving the problem]

[0007] A cable straightening device comprises a first roller group having multiple rollers and a second roller group having multiple rollers opposite the first roller group, with the cable staggered in the transport direction between the rollers of the first roller group and the rollers of the second roller group. The straightening device further comprises a feeding device, for example, which is manually operable or motor-driven, which can displace the first roller group relative to the second roller group. The fact that the straightening device includes fixing means for fixing the first roller group in position makes it possible to precisely set the spacing between the rollers. The feeding process, i.e., the process of moving the first roller group from an open position to a closed position, can be carried out in an efficient manner.

[0008] Thanks to the feeding device, the first roller group can be displaced relative to the second roller group to adjust the spacing between the rollers of the first roller group and the rollers of the second roller group, starting from an open position and extending in a closing direction transversely to the transport direction, preferably perpendicular to it. The open position is where the rollers of the first roller row and the rollers of the second roller row are spaced apart to the extent that a cable can be inserted between them. The closed position is the position after the displacement movement is complete. The feeding process is completed. In the closed position, the rollers of the first roller group and the rollers of the second roller group contact the cable in a straight and non-wavy manner.

[0009] The deformer may have a first roller support for a first roller group, fastened so that the rollers of the first roller group are rotatable, and a second roller support for a second roller group, fastened so that the rollers of the second roller group are rotatable. Furthermore, the deformer may have a frame for holding the first roller support and the second roller support, for example in the form of a base plate, to which the first roller support is mounted so as to be displaceable in the closing direction.

[0010] In a preferred embodiment, the deshaping device for forming the fixing means may include a safety device that prevents the first roller group from moving backward in the closing direction during the feeding process. Thanks to the safety device, the deshaping device can be operated reliably, ergonomically, and efficiently with respect to the feeding process.

[0011] For this purpose, a separate safety device, such as a safety device based on a ratchet mechanism, may be provided. Such a ratchet mechanism may, for example, comprise teeth and a stopper that interacts with these teeth. However, the ratchet mechanism may allow pilgering movement. Therefore, it is advantageous for the feeding device of the straightening device to be equipped with a stepless safety device. A stepless safety device has the advantage that this safety device can prevent substantially all undesirable backward movement.

[0012] The aforementioned safety device can be configured as a positive-fit safety device. The safety device can also be configured as a non-positive safety device. In addition to mechanical safety devices, other safety devices are also possible. The safety device can be a hydraulic cylinder. When the roller support attempts to retract, the check valve prevents the hydraulic fluid from leaking out of the hydraulic cylinder, thus enabling the safety device.

[0013] If the first roller support is supported on the frame by a spring element, particularly a helical compression spring, it is also advantageous that the spring element acts on the first roller support by spring force in the closing direction. The safety function of the safety device can thus be easily guaranteed.

[0014] The safety device may include a clamping body, particularly a clamping roller, which is received in a wedge-shaped gap. The wedge-shaped gap can be a receiving portion for the clamping body, tapering in the closing direction. Due to the wedge effect, the clamping body, pushed into the wedge-shaped gap, can reliably prevent the return movement of the first roller support.

[0015] The safety device may include a spring to create pretension in the clamping body, particularly the clamping roller. The spring-loaded clamping body is continuously pressed into the wedge-shaped gap, thereby ensuring that the safety device functions reliably.

[0016] The first roller support may have a wedge-shaped contact surface, which, together with a fixed opposing surface, forms a wedge-shaped gap. This fixed opposing surface may be formed, for example, by a guide surface assigned to the frame, along which the first roller support can be guided during the closing process.

[0017] An alternative safety device may comprise two wedges, each having opposing, angled wedge faces, which press against each other in the event of a return movement, thus preventing the return movement. Other alternative safety devices may include an eccentric body.

[0018] The deformer may have a manually operated feed mechanism having an operating element, particularly in the form of a button, that can be linearly moved in the closing direction. This operating element allows a first roller support or first roller group to be displaced in the closing direction, for example, by pressing the operating element. Such a deformer is characterized by simple operation and good ergonomics. The operating element simply needs to be pressed for feeding. A quick-release lever for rapid closing is also not required.

[0019] A drive unit can be connected to an operating element to advance the first roller support. The drive unit can be connected to the shaft of the operating element or formed by the shaft itself. The shaft is an elongated component extending in the closing direction. The drive unit or shaft can be slidably mounted on a frame and can be moved in the closing direction (and possibly the reverse direction). The drive unit strikes the first roller support when it is pressed by pressing a button-like operating element, or when the operating element is moved in the closing direction by some other means, thereby displacing the first roller support in the closing direction. A detangling device having a motor-driven feeding device can also have such a drive unit.

[0020] The safety device is preferably configured as a releasable safety device. For this purpose, a release element may be provided to release the locking action of the safety device.

[0021] The unlocking element for releasing the locking action can be arranged on the drive part or can be connected to the drive part. The drive part having the unlocking element is configured such that during the return movement, i.e., during the movement in the direction opposite to the closing direction, the unlocking element can come into contact with the clamping body. The unlocking element can be a nose-shaped protrusion protruding from the drive part or the shaft. To release the locking action, the unlocking element may be pushed away from the clamping body, whereby the clamping body no longer contacts the wedge-shaped contact surface of the wedge-shaped gap, i.e., the clamping no longer occurs.

[0022] The locking action can be released by pulling a button-shaped operating element. This solution is characterized by simple handling. Other means can also be used to release the locking action. For example, with regard to the opening process, it can also be advantageous not to use the aforementioned operating element to close the kink removal device. If another means for releasing the locking action is used, inappropriate operations on the operating element that lead to an unintentional release of the locking action can be excluded.

[0023] The kink removal device does not necessarily have to have a manually operated feeding device. For a specific range of applications, if the kink removal device has a feeding device that can be driven by a linear direct drive, a pneumatic cylinder or a hydraulic cylinder can be advantageous for moving the first roller support in the closing direction. Such a feeding device can be easily controlled and operated automatically or semi-automatically.

[0024] In a further embodiment, the kink removal device can have a contact roller for fixing the closed position, the contact roller being arranged downstream of the first roller group with respect to the transfer direction, and the cable being assigned to the contact roller and the second roller group and being pressed between the contact roller and a counter roller facing the contact roller.

[0025] Alternatively, the kinking device for fixing the closed position can preferably have at least one, preferably a plurality of, contact fingers displaceable up to a range limited in the closing direction, and at least one contact finger is assigned to one roller group, in particular the first roller group. In this case, the contact fingers can be arranged in each case opposite the rollers of the other roller group, in particular the second roller group, in such a way that the cable can be pressed between each contact finger and the opposing roller. After the closed position has been determined, the contact fingers can be moved in a direction opposite to the closing direction, such that the contact fingers can be moved to a rest position, whereby the contact fingers can be configured not to act on the cable any more.

[0026] After completion of the feeding process, in order to further produce a kinking effect on the cable, if the second roller support is attached to the frame so as to be rotatable about a pivot axis, it is advantageous for the kinking device to be, for example, manually operable or a pivoting device driven by a motor, and this pivoting device has a pivoting device for setting an angle of approach between the rollers of the first roller group and the rollers of the second roller group. The second roller group is preferably pivotable from a neutral position to an operating position.

[0027] The second roller support is particularly preferably rotatably attached to the frame such that, by pivoting the second roller support in particular, the rollers on the inlet side act on the cable more strongly than the rollers on the outlet side. The pivoting device can be, for example, a device as known per se from European Patent Application Publication No. 2399856.

[0028] In one embodiment, a link guide for the movement of the first roller support and / or the second roller support can be provided.

[0029] A linearly movable thrust element can be provided for the link guide, which allows both the first and second roller supports to move. The thrust element can be configured to be operated manually or driven by a motor. In this embodiment, two shape-setting parameters (roller spacing and angle of attack) can be set in a single normal work step or operation.

[0030] The shape-correcting device may preferably have a thrust element with a manually operated hand lever that is movable back and forth in the transport direction.

[0031] On the thrust element, a feed link guide for displacing the first roller support in the closing direction and an open link guide for releasing the locking action and returning the first roller support can be arranged. In this example, a first spring-loaded control body can interact with the feed link guide and the open link control body. A swivel link guide for swiveling the second roller support can be arranged on the thrust element. A second spring-loaded control body can interact with the swivel link guide.

[0032] The swivel link guide can be formed by a stepped control track, preferably with multiple receiving sections, for a control body to set individual angles of attack. This makes it possible to set the angle of attack particularly quickly. Such a swivel link guide can also be used in conventional straightening devices, i.e., straightening devices without safety devices or other fixing means for fixing the position of a first roller group shifted by a feed device.

[0033] Additional advantages and specific features of the present invention can be derived from the following detailed description and drawings of exemplary embodiments. [Brief explanation of the drawing]

[0034] [Figure 1] This is a perspective view of the cable straightening device according to the present invention, for straightening cables that are in an open position. [Figure 2] This is a diagram of the shape-correcting device in the closed position. [Figure 3] This is a rear view of the shape-correcting device in the closed position. [Figure 4] This is a cross-sectional view passing through the shape-removing device in the closed position (a cross-sectional view along the cross-sectional line AA in Figure 3). [Figure 5] This is a perspective view of the shape-correcting device in its operating position. [Figure 6] This is a cross-sectional view through the shape-correcting device, which remains closed, but the safety device has been released. [Figure 7] This is a detailed, enlarged view of the rear of the shape-correcting device in the closed position with the safety device released, as shown in Figure 6. [Figure 8] This is a perspective view of the alternative straightening device in its operating position. [Figure 9] This is a front view of a hair straightening device according to a third embodiment, in which the hair straightening device is in the closed position. [Figure 10] This is a schematic diagram of the longitudinal cross-section of the additional straightening device in the open position. [Figure 11] This is a diagram of the hair straightening device according to the embodiment of Figure 10, in the closed position. [Figure 12] This is a diagram of the shape-correcting device in its operating position. [Modes for carrying out the invention]

[0035] Figure 1 shows a cable straightening device 1 for straightening cables using two opposing roller groups 2 and 3, which can be moved toward each other. The first roller group, indicated by reference numeral 2, has a plurality of rollers 20.1 to 20.7 arranged in a row front to back. The second roller group, indicated by reference numeral 3, has a plurality of rollers 21.1 to 21.6 arranged in a row front to back. In this example, the first roller group 2 is located at the top of the cable straightening device 1. For simplicity and better understanding, this roller group is referred to as the "upper roller group." Accordingly, the associated rollers 20.1 to 20.7 are the "upper rollers." Therefore, the roller group 3 opposite the upper roller group 2 is the "lower roller group" in this example.

[0036] The upper rollers 20.1-20.7 and the lower rollers 21.1-21.6 extend parallel to each other and each lies on a horizontal roller line. A cable (not shown in Figure 1) that passes between the upper rollers 20.1-20.7 and the lower rollers 21.1-21.6 for deformance also runs horizontally, indicated by arrow x. Figure 1 shows the deformance device 1 in the open position, where the two roller groups 2 are spaced apart to the extent that the cable can be introduced or inserted between the upper rollers 20.1-20.7 and the lower rollers 21.1-21.6. Thus, the upper roller group 2 moves relative to the lower roller group 3. This closing operation is indicated by arrow s. The closing direction s clearly extends vertically. Figure 2 shows the deshaping device 1 in the closed position or after the feeding process is complete, after the upper roller group 2 has been moved in the closing direction s relative to the lower roller group 3. Cable 4 is actuated here and is staggered with rollers 20.1-20.7 of the upper roller group 2 and rollers 21.1-21.6 of the lower roller group 3, and can be pulled through the deshaping device 1 in the horizontal transport direction x by a cable conveyor (not shown).

[0037] The basic arrangement and orientation of roller groups 2 and 3 shown herein relate to an embodiment of the deshaping device 1 according to the present invention. Of course, other arrangements and orientations of roller groups 2 and 3 are also possible. For example, the two roller groups 2 and 3 can be arranged adjacent to each other, in which case the closing direction s passes through a horizontal plane.

[0038] The dekining device 1, described in detail below, may be used in a cable processing machine (not shown) for cable assembly. The cable processing machine can process electrical cables, for example, insulated strands, or insulated solid conductors made of copper or steel. The cables to be processed are supplied in drums, on rolls, or in bundles. The cables supplied to the cable processing machine from drums, rolls, or bundles are somewhat curved and twisted. Therefore, the cables must be dekined, and for this purpose the dekining device 1 described above is used.

[0039] The cable processing machine can be designed, for example, as a swivel machine having a swivel unit with a cable gripper. The swivel unit must rotate around a vertical axis to feed the cable ends to processing stations such as grommet stations and crimping stations. Cutting stations and stripping stations are typically located on the longitudinal axis of the cable processing machine. The cable processing machine therefore includes a feeding unit having a cable conveyor configured, for example, as a belt conveyor, which carries the cable to the swivel unit in a transport direction along the longitudinal axis of the processing machine. A detangling device 1 is located within the cable processing machine, upstream of the belt conveyor on the longitudinal axis of the processing machine. When the cable is fed to the swivel unit, the cable is pulled through the detangling device 1 to detangle the cable 4.

[0040] The rollers 20.1 to 20.7 of the first or upper roller group 2 are rotatably mounted on the first roller support 6. The rollers 21.1 to 21.6 of the lower or second roller group 2 are rotatably mounted on the second roller support 7. The deformer further includes a frame 8 in the form of a base plate for supporting the first roller support 6 and the second roller support 7. In this example, the roller support 6 and 7 are configured in a plate shape.

[0041] A first roller support 6 having upper rollers 20.1 to 20.7 is mounted on a frame 8 so as to be displaceable in the closing direction s. A second roller support 6 having lower rollers 21.1 to 21.6, indicated by reference numeral 24, is mounted on a frame 8 so as to be rotatable with respect to a horizontal pivot axis extending perpendicular to the transport direction. The basic structure of the deformer 1 is similar to the deformer known from European Patent Application Publication No. 2399856, and the movement of the roller support 6 together with the upper rollers 20.1 to 20.7 for the feeding process is performed by a novel feeding device 5.

[0042] The feeding device 5 is configured to be manually operable and includes an operating element 16 that can be moved linearly in the closing direction s. The first roller support 6 is supported on the frame 8 by a spring element 10 in the form of a helical compression spring. The spring element 10 acts on the first roller support 6 by spring force in the closing direction s. By pushing the operating element 16, the first roller support 6 can be displaced downward together with the upper rollers 20.1 to 20.7. The operating element 16 is pushed down until the rollers 20.1 to 20.7 and 21.1 to 21.6 touch the cable.

[0043] The operating element 16 must be pressed only for feeding, which results in particularly simple and ergonomic handling. The second roller support 7, which has the lower roller group 3, does not move during the feeding process. For this purpose, the lower roller group 3 is held by the processing machine control unit using a pneumatic valve and pneumatic cylinder 33 in a position parallel to the upper roller group 2, and this position corresponds to the neutral position.

[0044] In this example, the operating element 16 has a button shape. Of course, other shapes for the operating element 16 are also possible. For example, the operating element 16 could have a curved handle.

[0045] To fix the position of the upper roller group 2 displaced in the closing direction s by the feeding device 5, the deshaping device 1 is equipped with a safety device (reference numeral 9, see Figure 3 below) that prevents the upper roller group 2 from moving backward in the closing direction s. Under certain conditions, the upper roller group can also be prevented by a clamping mechanism, such as a clamping lever or a pneumatic cylinder.

[0046] A rotatable contact roller 19 is also positioned on the first roller support 6. The contact roller 19 is located on the exit side, behind the upper roller group 2 with respect to the transport direction x, and plays a role in fixing the closed position. A counter roller 22 is provided on the second roller support 7, opposite to the contact roller 19. Starting from the open position (Figure 1), when the upper roller group 2 is displaced in the s direction relative to the second roller group 3, the cable 4 in between will come into contact with the two rollers 19 and 22. Thanks to the contact roller 19 and the counter roller 22, the closing action produced by pressing the operating element 16 appropriately adjusts the two roller groups 2 and 3 relative to each other with respect to any cable diameter.

[0047] As can be seen in Figure 2, in the closed position, the upper rollers 20.1-20.7 contact one side of the cable 4 and the lower rollers 21.1-21.6 contact the other side of the cable 4 in such a way that the cable 4 remains straight. The contact roller 19 and the counter roller 22 cooperating with this contact roller 19 ensure that the rollers 20.1-20.7 and 21.1-21.6 cannot be further displaced relative to each other. This results in a wavy course for the cable 4 as it passes between the rollers.

[0048] As soon as the operator pushes down the operating element 16, the operator feels a sharp increase in back pressure when the cable 4 is pressed between the contact roller 19 and the counter roller 22. This signals to the operator that the feeding process is complete (Figure 2) and that they can release their hand from the operating element 16. Thanks to the safety device, after the operating element 16 is released, it is ensured that the upper roller group 2 does not make undesirable return movement in the opposite direction to the closing direction s, i.e., upward.

[0049] The guide roller 37 is positioned at the front end of the first roller support 6 on the entrance side. The guide roller 37 has a larger diameter than rollers 20.1-20.7 for cable straightening. The guide roller 37 is slightly offset vertically downward compared to rollers 20.1-20.7, so that when the straightening device 1 is in the closed position, the guide roller 37 is positioned below the cable. The guide roller 37 plays a role in facilitating the insertion of the cable 4 into the open straightening device. The guide roller 37 allows, for example, tension to be applied to the cable 4 by hand before and while the straightening device 1 is closed, so that the cable can be easily and reliably kept still when all the rollers 20.1-20.7 and 21.1-21.6 are closed.

[0050] Figure 3 is a rear view of the deformer 1. The first roller support 6 for the upper rollers 20.1 to 20.7 has a guide section 38. This guide section 38 extends vertically and can be guided along two guide plates 39 and 40 to slide along the guide surface in the s direction. The guide plates 39 and 40 are part of the frame 8. The operating element 16 is connected at the top to the guide section 38 of the first roller support 6.

[0051] The safety device already described can be seen in Figure 3, where it is indicated by reference numeral 9. The safety device 9 comprises a clamp roller 11 received in a wedge-shaped gap 12. The wedge-shaped gap 12 is a receiving portion for the clamp roller 11, tapering with respect to the closing direction s. The safety device 9 further comprises a spring 13 for pretensioning the clamp roller 11. Due to the wedge effect, the clamp roller 11, pushed into the wedge-shaped gap, can reliably prevent the return movement of the first roller support 6. The spring 13 keeps the clamp roller 11 continuously pushed into the wedge-shaped gap 12, thereby ensuring that the safety device 9 functions reliably. A release element 41 may be found below the clamp roller 11. When this release element 41 is moved upward relative to the clamp roller 11, it can push up the clamp roller 11, thereby canceling the clamping action (see Figure 7 below for further details).

[0052] Further structural details of the shape-correcting device 1 can be seen in Figure 4. The button-shaped operating element 16 has a shaft 17 fixedly connected to the drive unit 18. The drive unit 18, adjacent to the shaft 17, plays the role of advancing the first roller support 6 when the operating element 16 is pressed. The drive unit 18 has a front end in the closing direction s, which contacts the first roller support 6 to advance it, at least during closing. Connected to the drive unit 18 is a nose-shaped projection that forms a release element 41 for releasing the locking action, which is inserted from the side into a wedge-shaped gap 12 (see Figures 6 and 7 below).

[0053] After the feeding process is complete, the second roller support 7 rotates to the operating position around the pivot axis 24 to provide sufficient detangling effect, so that the inlet rollers 20.1 and 21.1 act more strongly on the cable 4 than the outlet rollers 20.7 and 21.6. For this purpose, the front side of the second roller support 7 is raised by a pneumatic cylinder 33, which is indicated by arrow z in Figure 5. The pneumatic cylinder 33 can be easily set to the desired angle of attack α with appropriate control. Alternatively, a detangling device could be designed in which rotation can be performed manually by appropriate means instead of using a pneumatic cylinder 33.

[0054] To prevent the cable 4 from being crimped by the user while the cable is in contact with the contact roller and counter roller during the feeding process, the detangling device 1 may have a device for limiting the force between the operating element 16 and the counter roller 22, for example, the operating element 16 is connected to the counter roller 22 at least indirectly via a spring (not shown), and the stroke of the operating element 16 is limited by a mechanical stop.

[0055] Figure 5 shows the detangling device 1 in its operating position after the second roller support 7 has rotated. All rollers 20.1 to 20.7 of the upper roller group 2 are positioned horizontally on the line, and rollers 21.1 to 21.6 of the lower roller group 3 are positioned at an angle of attack α on the line approaching the entrance of the upper roller group 2. The cable 4 is to extend approximately tangentially on rollers 20.7 and 21.7 without being bent at the exit of the detangling device 1. The appropriate setting of rollers 20.7 and 21.7 on the exit side is correlated with the outer diameter of the cable 4.

[0056] To activate the deformer 1, the device control unit (not shown) moves the lower roller group 3 to the operating position either after a specific button is pressed or automatically within a programmed sequence, during which the pneumatic cylinder 33 moves the lower roller group 3 toward the upper roller group 3 at the inlet side. Restoring the deformer 1 to its original starting position can also be performed by pressing a button or automatically initiated within a programmed sequence. A key or programmed sequence can activate a pneumatic valve or a switch in the device control unit, resulting in the lower roller group 3 being moved via the pneumatic cylinder 8 back to a position parallel to the first roller group 2. The device control unit may be configured such that the operation of the pneumatic cylinder 8 to pivot the lower roller group 3 from the operating position to a parallel neutral position can again be triggered by pulling or, in some cases, pressing a button-shaped operating element 16.

[0057] From Figure 5, it can also be seen that the counter roller 22 is positioned toward the pivot axis 24 toward the contact roller 19 so that the counter roller 22 moves away from the contact roller 19 and releases the pressure or clamping of the cable 4 between the two rollers 19 and 22 during that movement. The pivot axis 24 is positioned approximately midway between the last lower roller 21.7 and the counter roller 22.

[0058] The pivot axis 24 can be positioned in other locations. For example, the pivot axis 24 can be coaxial with the axis of rotation of the counter roller 22. Furthermore, the pivot axis 24 or rollers 19 and 22 can be positioned within the dekining device in such a way that when the lower roller group 3 is pivoted, rollers 19 and 22 move toward each other, thereby creating a slight crushing effect on the cable. This crushing can be advantageous for dekining cables with relatively stiff insulation. Such cables can be better handled if they are further radially crimped during or after dekining. For this purpose, if the pivot axis 24 is positioned to the right of the counter roller 22 instead of to the left as in the exemplary embodiments shown in Figures 1 to 8, the distance between roller 19 and roller 22 is reduced when it pivots to form an operating position and the cable 4 is crimped accordingly. To crimp cables on the cable processing machine, it is also conceivable to install an additional pair of rollers (not shown) downstream of the dekining device.

[0059] Figures 6 and 7 show how the locking action can be canceled or released by the safety device 9. By pulling the operating element 16, the drive unit 18, which has the release element 41, is moved in the closing direction. The front end of the drive unit 18, which was previously in contact with the first roller support 6, is released. The release element 41 pushes up the clamp roller 11 against the force of the spring 13, thereby releasing the locking action. Through the spring force generated by the spring element 10, the first roller support 6 is released and then moved to a stationary position, returning to its original position. The cable 4 can be removed and a new cable can then be inserted. Thus, opening and closing the straightening device 1 is performed via a single linear movement, which is ergonomic and can be done in a very short time.

[0060] Figure 7 shows that the wedge-shaped gap 12 is formed by a wedge-shaped contact surface 14 assigned to the first roller support 6 and a stationary opposing surface assigned to the frame 8. This opposing surface is formed by a guide surface 34 assigned to the frame 8, along which the first roller support 6 can be guided during the closing process.

[0061] As can be seen in Figure 8, the feeding device 5 is also configured to be driven by a motor, and this feeding device 5 may displace the upper roller group 2 relative to the lower roller group 3 to adjust the spacing between the rollers 20.1 to 20.6 of the upper roller group 2 and the rollers 21.1 to 21.7 of the lower roller group 3. Instead of a button-type operating element, an actuator 35 is provided, which can move the upper roller group 2 vertically downward for the feeding process. The actuator can be, for example, a pneumatically driven unit. When the manually operated operating element 16 is replaced by the actuator 35 as shown in Figure 8, the feeding process can be carried out in a cost-effective and reliable manner without human intervention.

[0062] Figure 9 shows a further modification of the detangling device 1. Instead of the contact rollers and opposing counter rollers of the previous exemplary embodiment, the detangling device 1 has contact fingers 23 for defining the closed position. In this example, the contact fingers 23 are assigned to the upper roller group 2. Each contact finger 23 is positioned opposite the rollers 21.1 to 21.6 of the lower roller group 3, so that the cable 4 can be pressed between each contact finger 23 and the opposing rollers 21.1 to 21.6. In the exemplary embodiment shown in Figure 9, the detangling device 1 has six contact fingers 23, so in this example, there is one contact finger 23 for each of the six lower rollers 21.1 to 21.6. This has the advantage that the pressure of the contact fingers acting on the cable 4 is distributed more uniformly and over a wider area. However, it is conceivable to have fewer contact fingers, or even just one contact finger in some cases. In a modified example of the deformer 1 shown in Figure 9, it is also shown that the operating unit (16) can be added for manual operation to carry out the feeding process, or it can be replaced by an actuator 35.

[0063] The contact fingers 23 are pushed up after the closed position is set so that, even if there is an operating position formed by the pivot, these contact fingers 23 are sufficiently far from the cable 4 and can no longer act on the cable. For this purpose, the carrier plate that holds the contact fingers 23 has an elongated hole 36 so that the contact fingers 23 or the carrier plate can be attached to the first roller support 6 so that these contact fingers 23 or the carrier plate can be moved within a limited range in the closing direction.

[0064] Figures 10 to 12 relate to further embodiments of the deshaping device 1, which are equipped with the safety devices described above, but are not shown here for simplification. This deshaping device 1 is characterized by a special design of a feeding device 5 for performing the feeding process and a swivel device 15 for forming the working position. The movement of both the roller support 6 and the roller support 7 is performed with the help of link control, which is described below.

[0065] The shape-correcting device 1 has a thrust element 25 that can be moved linearly in the transport direction x, and a first roller support section 6 having upper rollers 20.1 to 20.7 and a second roller support section 7 having lower rollers 21.1 to 21.6 can be moved via this thrust element. In this example, the thrust element 25 can be operated manually via a hand lever 26. Instead of the hand lever 26 which can manually move the thrust element 25 back and forth, a push element 25 can also be connected to a drive unit for moving the thrust element 25.

[0066] A feed link guide 27 is positioned on the thrust element 25 to displace the first roller support 6 in the closing direction s. Furthermore, an open link guide 28 is positioned on the thrust element 25 to release the locking action and return the first roller support 6 to its original position. The link control unit comprises a control body indicated by reference numeral 30, which interacts with the feed link guide 27 and the open link guide 28. The control body 30 is supported on the first roller support 6 via a spring 42.

[0067] A pivot link guide 29 for pivoting the second roller support 7 is positioned on the push element 25, while a spring-loaded control body 31, indicated by reference numeral 31, cooperates with the pivot link guide 29. The spring that generates the spring load on the control body 31 is indicated by reference numeral 43. The spring 43 supports the control body 31 upward relative to the frame 8 of the shape-correcting device 1. The control body 31 is connected to the second roller support 7 via a lever 44.

[0068] The swivel link guide 29 can be formed by a continuously rising control path or curve. It may be advantageous if the swivel link guide 29 is formed by a stepped control track with a plurality of receiving portions 32 for the control body 31. Such a link guide 29 having a stepped control path for setting individual angles of attack is illustrated in the exemplary embodiments shown in Figures 10 to 12.

[0069] The shape-correcting device 1 has a thrust element 25 having a hand lever 26 and link guides 27, 28, and 29. The thrust element 25 can be moved back and forth relative to the frame 8 by the hand lever 26. The link guide 27 controls the feeding process via a control body 30 designed as a roller, where the upper roller group 2 is displaced downward relative to the lower roller group 3. To set the closed position, the shape-correcting device 1 also has a contact roller 19 and a counter roller 22 facing the contact roller 19. Alternatively, one or more contact fingers may be used. The link guide 29 controls the swivel process via the control body 30 designed as a roller, where the set angle α of the lower roller group 3 is set.

[0070] The operating modes of the link guide for feeding and pivoting are as follows: The starting point is the open position shown in Figure 10. The thrust element 25 is pushed to the left. In this example, the control body 30, moving along the feeding link guide 27, presses the roller group 2 via the spring 42 in the closing direction s against the cable 4 until the cable 4 is clamped between the contact roller 19 and the counter roller 22. The feeding process is completed and the closed position is reached. The deformer 1 in this closed position is shown in Figure 11.

[0071] As already mentioned above, a good de-curving effect is achieved when rollers 20.1, 21.1, 20.2, and 20.3 are positioned at the entrance in such a way that the cable 4 must move in a wavy manner between the rollers, so that the cable 4 is curved on all the continuous rollers with gradually decreasing intensity. If the thrust element 25 is pushed further to the left, the spring 42 can be released, and the spring (10) (not shown here) supporting the first roller support 6 on the frame 8 pushes the roller group 2 into the safety device. As shown in Figure 12, if the thrust element 25 and thereby the swivel link guide 29 are pushed further to the left, the control body 31 moves along the swivel link guide 29, thereby pulling the lever 44 upward, which in turn increases the angle of attack α of the lower roller group 3 and further improves the de-curving effect. The notches 32 on the swivel link guide 29 allow the control body 31, which is spring-loaded by the spring 43, to be fitted into a predetermined fixed position, thereby ensuring that it reaches the operating position. The scale indicating the position of the thrust element 25 allows the user to read the setting of the shaping effect or adjust the shaping effect based on the default value.

[0072] When the thrust element 25 is moved in the opposite direction, i.e., to the right, to return to its starting point, the shape-correcting device 1 is returned to the open state or open position accordingly. The swivel link guide 29 first sets the lower roller group 3 to return to a parallel neutral position via the control body 31. The control body 30 moves along the open link guide 28, releasing the safety device, thereby allowing the upper roller group 2 to move to the open position.

[0073] Instead of the linearly movable thrust element 25, the two control bodies can also be controlled by, for example, cam disks that can be rotationally driven.

[0074] A tension spring can also be used instead of the lever 44 so that the angle of attack of the lower roller group 2 is indirectly affected through the force of the corresponding spring.

[0075] The opposing contact rollers 19 and counter rollers 22 can also be positioned further toward the pivot axis 24 so that they move toward each other when the upper roller group 3 is feeding. This achieves a clamping effect corresponding to the effect of so-called clamp rollers.

[0076] In an alternative configuration of the shape-correcting device 1, a fixed pivot axis 24 may be omitted. To allow the user to finely adjust the spacing between the two roller groups 2 and 3, the pivot axis 24 can be displaced vertically, for example, using an adjustment screw or eccentric. The device may also be attached to the shape-correcting device 1, thereby allowing displacement between the frame 10 and the roller group 2. [Explanation of Symbols]

[0077] 1. Hair straightening device 2. The First Laura Group 3. The second Laura group 4 Cables 5. Feeding device 6. First roller support 7. Second roller support section 8 frames 9 Safety equipment 10 Spring elements 11 Clamp Roller 12 gaps 13 springs 14 Contact surface 15. Swivel device 16 Operation Elements 17 Shaft 18 Drive unit 19 Contact roller 20, 21 Laura 22 Counter Roller 23 Contact Fingers 24 Swivel axes 25 thrust elements 26 Hand levers 27. Links for Sending Links 28 Open Link Guide 29. Swivel Link Guide 30, 31 Control Unit 32 notches 33 Pneumatic cylinder 34 Guide surface 35 Actuators 36 holes 37 Guide rollers 38 Information Department 39 Information Plate 40 Information Plate 41 Unlocking elements 42, 43 springs 44 Lever x transport direction s Closing direction α Angle of attack

Claims

1. A cable straightening device (1) for straightening a cable (4) comprises a first roller group (2) having a plurality of rollers (20.1 to 20.7) and a second roller group (3) having a plurality of rollers (21.1 to 21.6) facing the first roller group (2), wherein the cable (4) is staggered in the transport direction (x) between the rollers (20.1 to 20.7) of the first roller group (2) and the rollers (21.1 to 21.6) of the second roller group (3), and can be displaced by a feeding device (5) that can displace the first roller group (2) in a closing direction (s) relative to the second roller group (3) during the feeding process, and the straightening device (1) comprises fixing means for fixing the position of the first roller group (2) that has been displaced in the closing direction by the feeding device (5). The deshaping device (1) includes a safety device (9) that prevents the first roller group (2) from moving backward in the closing direction during and after the feeding process, the safety device (9) includes a clamping body that moves continuously within a wedge-shaped gap (12) formed in the deshaping device when the first roller group (2) is moved in the closing direction. The safety device (9) includes a spring (13) for generating pretension on the clamp body. A hair straightening device (1) characterized by the following features.

2. The deformer (1) according to claim 1, characterized in that the deformer (1) comprises a first roller support (6) for the first roller group (2) on which the rollers (20.1 to 20.7) of the first roller group (2) are rotatably mounted, and a second roller support (7) for the second roller group (3) on which the rollers (21.1 to 21.6) of the second roller group (3) are rotatably mounted, and a frame (8) for holding the first roller support (6) and the second roller support (7), wherein the first roller support (6) is mounted on the frame (8) so as to be displaceable in the closing direction.

3. The deformer (1) according to claim 1 or claim 2, characterized in that a first roller support (6) is supported on a frame (8) by a spring element (10), and the spring element (10) supports the first roller support (6) with a spring force acting in the closing direction (s).

4. The deformer (1) according to any one of claims 1 to 3, characterized in that the clamp body is a clamp roller (11) that is received in a wedge-shaped gap (12).

5. The deformer (1) according to any one of claims 1 to 4, characterized in that the deformer (1) has a manually operable feeding device (5) having an operating element (16) that is linearly movable in the closing direction.

6. The deformer (1) according to any one of claims 1 to 5, characterized in that a drive unit (18) for advancing the first roller support unit (5) is connected to an operating element (16).

7. The deformer (1) according to any one of claims 1 to 6, characterized in that a release element (41) is provided to release the locking action of the safety device (9), and when the release element (41) is moved upward relative to the clamp roller (11), it pushes up the clamp roller (11), thereby canceling the clamping action.

8. The deformable device (1) according to claim 6 or 7, characterized in that a release element (41) for releasing the locking operation is arranged in the drive unit (18), and the release element (41) can move together with the clamp body (11) during a return movement in the opposite direction to the closing direction.

9. The deformer (1) according to any one of claims 1 to 8, characterized in that the deformer (1) has a contact roller (19) for fixing a closed position, the contact roller (19) is positioned on the exit side behind the first roller group (2) with respect to the transport direction (x), and the cable (4) is assigned to the contact roller (19) and the second roller group (3) and can be pressed between the contact roller (19) and a counter roller (22) facing the contact roller (19).

10. The detangling device (1) for fixing the closed position has at least one contact finger (23), at least one contact finger (23) is assigned to one roller group, the contact finger (23) faces the rollers (21.1 to 21.6) of the other roller group, and thereby the cable (4) can be pressed between each contact finger (23) and the opposing roller (21.1 to 21.6), as described in any one of claims 1 to 8.

11. The cable straightening device (1) according to any one of claims 1 to 10, characterized in that, after the completion of the feeding process, a second roller support (6) is mounted on a frame (8) so as to be rotatable around a pivot axis (24), and the straightening device (1) has a pivot device (15) that allows the second roller group (3) to be pivoted to an operating position.

12. The deformer (1) according to any one of claims 1 to 11, characterized in that the link control unit is for moving the first roller support (6) and / or the second roller support (7).

13. A linearly movable thrust element (25) that moves linearly in the transport direction x is provided for the link control unit, and both the first roller support (6) and the second roller support (7) are movable via this thrust element (25), a feed guide (27) is positioned on the thrust element (25) to displace the first roller support (6) in the closing direction (s), an open link control unit (28) is positioned to release the locking action and retract the first roller support (6), and a swivel link guide (29) for swiveling the second roller support (7) is positioned on the thrust element (25), and a swivel link control unit (29) for setting individual angles of attack is formed by a stepped control track. The hair straightening device (1) according to claim 12, characterized in that

14. The deformer (1) according to claim 13, characterized in that the deformer (1) has a movable thrust element (25) having a manually operable hand lever (26).

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