Straightening device for straightening lines, method for braking at least one rotatable roller in the straightening device, cable processing machine having the straightening device, and upgrade kit for the cable processing machine

Abstract

To suppress the formation of a loop when a line is straightened.SOLUTION: A straightening device 15 for straightening a line 11 includes a straightening mechanism 20. The straightening mechanism 20 has a first row of rollers 21 and a second row of rollers 31 which rows can be moved relative to one another and the delivery route of the line 11 runs between the rows of rollers 21, 31. At least one of the two rows of rollers 21, 31 has a plurality of rotatable rollers 25, 35. A braking device 40 is provided for braking at least one of the rotatable rollers 25, 35 of at least one of the two rows of rollers 21, 31. The braking device 40 is a magnetic braking device that applies a braking force to the rotatable rollers 25, 35 depending on the rotational speed of the rollers 25, 35 caused by the line passing through the straightening device.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a straightening device for straightening the lines described in the preamble of claim 1, a method for braking at least one rotatable roller in the straightening device according to claim 11, a cable processing machine having the straightening device according to claim 14, and an upgrade kit for the cable processing machine according to claim 15.

Background Art

[0002] As the number of electronic assemblies in the industry increases, the requirements for the quality of cable sets and cable connections between assemblies also increase. Therefore, it is more important to always check the lines or cables at the processing stations of the cable processing machine during pulling, cutting, and further processing to avoid damage to the lines.

[0003] Also, the increasing number of required lines means that the cable processing machine has to operate faster. The throughput of the cable processing machine is a major economic factor and is decisive for the customer's purchasing decision in addition to quality.

[0004] Fully automatic machines for cable processing must be able to perform processing processes such as cutting, stripping, crimping, twisting, and tin plating as quickly as possible. Additional processing steps such as welding of lines and automatic winding of the processed lines are optionally available. For this purpose, an endless line is typically drawn into the cable processing machine from a container such as a cable drum or cable container and straightened by a straightening mechanism. The process of straightening allows the line to be loosened, minimizes its inherent twist, and enables further processing in an axially aligned manner.

[0005] European Patent Application Publication No. 2399856 discloses a line straightening mechanism for straightening a line having upper and lower rows of rollers. These two rows of rollers are movable relative to each other, and the line transport path runs between the two rows of rollers. The rows of rollers have a plurality of rotating rollers for straightening the line.

[0006] Japanese Patent Publication No. 62-248528 discloses an apparatus for straightening rolled, drawn, and tempered steel wire in order to minimize the torsional tension of the wire and then generate a helical spring. The apparatus includes two straightening mechanisms, each having two rows of straightening rollers, which mechanically straighten the wire in two planes.

[0007] A known drawback of these devices is that, during the final stopping process, the line being straightened is braked only by the friction of the rollers and the bending forces within the line or wire.

[0008] European Patent Application Publication No. 3290370 discloses a wire transport device for supplying wire to a feeder. The wire transport device includes a braking device having a brake roller and a pressure roller as a pressure element. The brake roller and the pressure roller are positioned opposite each other and are movable relative to each other. Pressure is applied to the wire between the brake roller and the pressure roller, thereby braking as needed.

[0009] A drawback of this known device is that the wire is mechanically braked, generating heat within the wire due to a high level of friction, which results in the wire deforming when braked.

[0010] U.S. Patent Application Publication No. 3,881,578 discloses a magnetically assisted braking system for a railway vehicle, comprising brake blocks for braking the rotational motion of the running wheels of the railway vehicle. A voltage-receiving magnetic coil is positioned on a ferromagnetic connecting component between the running wheels and, together with a ferromagnetic brake block, forms a closed magnetic circuit through the running wheels and the stationary rail, and with the help of magnetic flux, an additional attractive braking friction force of the brake block is generated on the running wheels.

[0011] The drawback of known solutions is that this magnetic auxiliary braking device generates a high level of frictional heat on the running wheels, and therefore this braking device is unsuitable for cable handling machines.

[0012] A general braking device for the above-mentioned solution for railway vehicles is disclosed in Chinese Patent Application Publication No. 102556102, which does not disclose direct braking of the running wheels of railway vehicles and is not suitable as a braking device for cable handling machines.

[0013] German Patent Application Publication No. 102013002020 discloses a winding device for winding a rope-like winding material, having a winding material drum and a movable laying arm. An eddy current brake is positioned on the laying arm as a winding material brake, which transmits a braking force to the winding material directed away from the winding material drum if necessary. When a braking force is generated on the winding material, the winding material is pre-tensioned in a direction that moves it downward toward the winding material brake.

[0014] A drawback of this known device is that the braking force of the winding material brake acts directly on the winding material, applying tensile stress to the winding material, which inevitably causes deformation of the winding material. [Prior art documents] [Patent Documents]

[0015] [Patent Document 1] European Patent Application Publication No. 2399856 [Patent Document 2] Japanese Patent Application Publication No. 62-248528 [Patent Document 3] European Patent Application Publication No. 3290370 [Patent Document 4] U.S. Patent Application Publication No. 3,881,578 [Patent Document 5] Chinese Patent Application Publication No. 102556102 Specification [Patent Document 6] German Patent Application Publication No. 102013002020 Specification [Overview of the project]

[0016] The object of the present invention is to overcome one or more drawbacks of the prior art. In particular, the invention aims to create a straightening device that prevents damage to the line being straightened based on the friction effect when braking the line being straightened, and a method for braking at least one rotatable roller in one roller row of the straightening device that enables gentle braking of the line being straightened. Furthermore, a cable processing machine equipped with a straightening device that can maintain high quality requirements for the straightened line and prevent interruptions to the processing process due to damaged lines during straightening, and an upgrade kit for the cable processing machine using one cable processing machine may be created.

[0017] This objective is achieved by the apparatus and method specified in the independent claim. Further advantageous developments are described in the drawings, description, and in particular in the dependent claims.

[0018] The present invention provides a straightening device for straightening a line along a transport path, comprising a straightening mechanism having a first roller row and a second roller row, wherein the roller rows are movable relative to each other, the transport path of the line passes between them, at least one of the two roller rows has a plurality of rotatable rollers, and a braking device is provided for braking at least one of the rotatable rollers of at least one of the two roller rows of the straightening mechanism.

[0019] The braking device is designed to exert a braking effect on at least one of the two roller rows that rotate when the line is straightened, thereby enabling effective braking of this roller without mechanically overloading or deforming the line being straightened. The line being straightened is pulled through the straightening mechanism with the help of a line pull-in device. Because the line is pulled in at a high speed within the straightening mechanism when the line is straightened, and as a result the rotational energy of the rotating rollers in the roller rows is large, stopping the highly dynamic line pull-in device usually causes the line to form a loop between the straightening mechanism and the line pull-in device. This loop formation is due to the inertia of the rotating rollers in the roller row of the straightening device and is formed by the subsequent length of line from the container. A loop in the line can then lead to the line getting caught on components in the cable processing machine, resulting in the need to stop production. When the straightening process is restarted using the straightening device, the previously generated line loops are smoothed out by the line puller, inevitably resulting in a rapid acceleration of the line by the line puller, which introduces a length error into the straightened line. By directly braking the rotating rollers of at least one of the two roller rows with a braking device, the aforementioned loop formation between the straightening device and the line puller is prevented, thus avoiding the aforementioned drawbacks. In particular, there is no need to stop production, and the resulting line length error is prevented.

[0020] Preventing the formation of loops and the resulting potential for line damage is particularly advantageous in the case of electrical or optical lines, because these lines are particularly susceptible to the aforementioned effects and significantly degrade the quality of the straightened lines.

[0021] In particular, the braking device is designed to brake a plurality of rotatable rollers of at least one of the two roller rows of the straightening mechanism, so that the efficiency in the braking process can be further increased, thereby further protecting the line to be straightened. The two roller rows are arranged on the straightening device so as to be movable relative to each other.

[0022] Preferably, in the operating state, the braking device is in a braking action connection state that is at least partially non-contact with at least one of the rotatable rollers in at least one of the two roller rows. In the operating state, the braking device exerts a braking action on at least one of the rotatable rollers in at least one of the two roller rows, so that its rotational speed is reduced. The braking device does not contact this roller, so that in this braked roller, no heat accumulation based on mechanical friction effects occurs.

[0023] In particular, in the operating state, the braking device is in a braking action connection state that is non-contact with a plurality of rotatable rollers without generating frictional heat in these rotatable rollers in at least one of the two roller rows. The braking device described in this specification prevents frictional heat that would otherwise be transmitted to the line to be straightened, and this frictional heat can, for example, cause deformation of the electrical insulator and thus damage its line insulation layer.

[0024] The non-contact braking action connection is preferably adjustable. Thus, the braking speed acting on at least one rotatable roller, and thus the deceleration, can be adapted to different characteristics of the line to be straightened, such as the diameter of the line, the type of line, or the thickness of the line insulation layer. Furthermore, the desired braking effect can be adapted to the drawing-in speed of the line in the straightening device, as a result of which the line is further protected during braking.

[0025] In particular, at least one rotatable roller includes an inner ring and an outer ring, and a rolling element unit such as a ball row is arranged between the inner ring and the outer ring. The inner ring is used to fix a ball bearing and an outer ring rotatably arranged thereon onto the fixed shaft of the first or second roller row of the straightening mechanism, and the inner ring is firmly arranged on this fixed shaft. The rotatable outer ring is rotatably arranged on this shaft with the aid of the rolling element unit and can rotate according to the line drawing-in speed.

[0026] Alternatively, at least one rotatable roller is arranged on a rotatably mounted shaft on the straightening mechanism and is firmly connected to this rotatable shaft. The rotatable shaft rotates around the axis of rotation together with the roller arranged on the rotatable shaft, and this axis of rotation extends along the longitudinal range of the rotatable shaft. In this way, at least one rotatable roller can be easily rotatably mounted on the first roller row or the second roller row.

[0027] In particular, the non-contact braking action connection acts on the rotatable outer ring of at least one rotatable roller. Thus, the deceleration during braking acts on the area of the rotatable roller with a larger radius, and thus on the area with a high torque, as a result of which the effectiveness of the non-contact braking action connection is further increased.

[0028] Advantageously, the rotatable outer ring of at least one rotatable roller has a groove for guiding the line to be straightened. In this way, the undesirable event of the line to be straightened moving away from the straightening mechanism can be prevented.

[0029] In particular, the non-contact braking connection acts on at least one additional roller among the multiple rotatable rollers of the roller row, especially on the rotatable outer ring of each roller, thereby further improving the braking effect.

[0030] Preferably, the braking device is a magnetic braking device, which includes at least one permanent magnet or at least one electromagnet. Using magnets such as permanent magnets or electromagnets, simple and efficient control or adjustment of the braking action for at least one rotating roller is possible.

[0031] Advantageously, permanent magnets can be cylindrical or disc-shaped, and as a result, they can be arranged in the braking device in a simple and use-specific manner. Examples of further alternative embodiments of the shape of permanent magnets in the braking device are square, ring-shaped, circular, or arc-shaped.

[0032] In particular, magnetic braking devices are eddy current brakes. Eddy currents induced by the eddy current brake in at least one rotating roller are generated by magnetic field lines, creating a system of forces that brakes one of the rotating rollers or the rotating outer ring of this roller. The resulting heating in the rotating roller or the rotating outer ring of this roller, and the heat transferred therefrom to the line being straightened, is negligible compared to the heat of the line being straightened when the line is mechanically braked.

[0033] Alternatively, the magnetic braking device is a hysteresis brake comprising at least two permanent magnets and a positioning device for moving at least two permanent magnets. The at least one rotatable roller described herein is designed as a hysteresis disc or hysteresis ring of a magnetic material, such as a ferromagnetic material, in the hysteresis brake. The at least two permanent magnets create a flow of force lines on at least one rotatable roller. The operating principle that opposing magnetic poles produce the least torque is applied here. However, the strongest remagnetization occurs and the torque is maximized when the S and N poles of the magnets are alternated along the circumference of the hysteresis disc. The torque can be continuously adjusted by changing the angle of magnetic pole superposition, and since there is no contact surface, the adjustment is maintained indefinitely. The torque applied to at least one rotatable roller is independent of the rotational speed of this roller and is therefore evenly distributed from stationary to maximum rotational speed.

[0034] Advantageously, the rotatable outer ring of the roller is made of a conductive material, such as steel, copper, or aluminum. As long as the rotatable outer ring is rotating, it is possible to generate a braking effect in the form of eddy currents via the magnetic field lines of a permanent magnet in the rotating outer ring of at least one rotatable roller. The eddy currents generated in the rotating outer ring of at least one rotatable roller are strongest at high rotational speeds and decrease steadily as the rotational speed decreases. The eddy currents in the rotatable outer ring of at least one rotatable roller brake the rotation of the outer ring non-contact and very effectively. When the outer ring is not rotating, no eddy currents are generated.

[0035] Advantageously, the braking device also has a magnet holder for receiving at least one permanent magnet. The magnet holder allows for easy placement of the permanent magnet on the braking device. At least one permanent magnet can be detachably positioned on the magnet holder and, as a result, can be separated from the magnet holder, and the permanent magnet can be replaced without tools.

[0036] In particular, the braking device has a magnet holder for receiving multiple permanent magnets, and as a result, multiple permanent magnets can contribute to the braking connection simultaneously, thereby the braking is improved by multiple permanent magnets on at least one rotatable roller in at least one of two roller rows.

[0037] Preferably, the braking device is spaced apart from at least one rotatable roller. The braking device is positioned horizontally and / or vertically apart from at least one rotatable roller, resulting in a non-contact braking device with a simple and space-saving structure. The spacing of the braking device from at least one rotatable roller allows for easy repair of the braking device, as the components of the braking device are easily accessible to the user.

[0038] Preferably, the braking device includes a positioning device for at least partially moving the braking device from a first position in which the braking device is in a non-operating state to at least a second position in which the braking device is in an operating state. In the non-operating state, there is no braking force on at least one rotatable roller in the roller row, and as a result, line straightening can be performed mainly without resistance. Since the distance from the braking device to at least one rotatable roller is shortened, the braking device can be actuated directly with the help of the positioning device, and as a result, a braking force is generated on this at least one rotatable roller in the roller row.

[0039] In particular, the positioning device is designed as a lifting device that approaches at least one rotatable roller perpendicularly, essentially perpendicular to the axis of rotation of the rotatable roller. This allows for the realization of a simple positioning device.

[0040] Alternatively, the positioning device may be designed to horizontally offset the braking device along the rotation axis of the essentially rotatable rollers, and as a result, the positioning device may be positioned without taking up space in the area of ​​one of the roller rows of the straightened roller rows.

[0041] Advantageously, the magnet holder can be moved from a first position in which the magnet holder or magnet is in a non-operating state to at least a second position in which the magnet holder or magnet is in an operating state. In this way, at least one component of the braking device, namely the magnet holder, is movably positioned on the braking device. Thus, the number of movable components can be reduced, and as a result, the braking device is constructed in a structurally simpler and more cost-effective manner.

[0042] The positioning device is advantageously configured as an electric crank drive. With the help of the electric crank drive, the braking device or magnet holder can be moved rapidly, continuously, or permanently from a first position to further positions.

[0043] Preferably, the positioning device has a housing, which as a result covers the movable components of the positioning device and provides a high level of security. Furthermore, this prevents the formation of line loops on the positioning device or within the straightening mechanism of the straightening device.

[0044] In particular, the housing has a guide section so that the braking device can be accurately and reproducibly positioned on the straightening mechanism.

[0045] Preferably, the positioning device has a drive mechanism that pneumatically, hydraulically, or electrically adjusts at least one magnet holder relative to at least one rotatable roller. This drive mechanism allows for controllable adjustment of the magnet holder relative to the rotatable roller, which advantageously continuously adjusts the distance between the magnet holder and at least one rotatable roller.

[0046] Advantageously, the positioning device comprises an end plate having at least one elastic element, such as a pretension spring. With the help of the elastic element, at least the magnet holder is positioned on the braking device in a pretensionable manner, and as a result, tilting of the magnet holder can be prevented when the braking device or the magnet holder is moved from a non-operating state of the magnet to an operating state of the magnet.

[0047] Preferably, the magnet holder has at least two permanent magnets, each with its magnetic south pole facing essentially the same direction. Thus, the existing magnetic fields of the permanent magnets have the same magnetic field lines, and as a result, the braking connection between at least one rotatable roller and the braking device is strengthened.

[0048] Preferably, at least one permanent magnet in the magnet holder is a neodymium magnet. Neodymium magnets have particularly high magnetic field strength and are robust, so the braking device requires little to no maintenance service.

[0049] A method for braking at least one rotatable roller in at least one roller row in a straightening device according to the present invention is, as described herein, at least, A step of straightening at least one line, wherein at least one line is pulled through a straightening device, A step of braking at least one of the rotatable rollers in at least one roller row of a straightening device with a braking device, Includes.

[0050] This method allows the rotatable roller in one of the roller rows to be effectively braked without mechanically loading or deforming the line being straightened. Therefore, as already mentioned above, this prevents the line from looping.

[0051] Advantageously, the line to be straightened is unwound from the container and drawn into the straightening device. Here, the container is a cable drum, winding material, cable container, etc., as described herein, and for example, by arranging an endless line, the line length of many endless lines can be straightened in a short time.

[0052] Preferably, prior to the aforementioned braking of at least one rotatable roller in at least one roller row of the straightening device, the braking device is moved at least partially from a first position in which the braking device is deactivated to at least a second position in which the braking device is activated. In the deactivated state of the braking device, no braking connection is made to at least one rotatable roller in the roller row. In this way, at least one rotatable roller is not permanently braked, and as a result, permanent thermoforming on at least one rotatable roller in the roller row is prevented.

[0053] Advantageously, prior to the aforementioned braking of at least one rotatable roller of the roller row of the straightening device, the magnet holder of the braking device is moved from a first position in which the magnet holder of the braking device is in a non-operating state to at least a second position in which the magnet holder of the braking device is in an operating state.

[0054] Preferably, the braking device has a non-contact braking action for at least one rotatable roller of at least one roller row of the straightening device. This prevents heat buildup due to mechanical friction, and as a result, at least one rotatable roller has a long service life and therefore a long maintenance service interval.

[0055] The cable processing machine according to the present invention comprises a straightening device as described above. As described herein, the cable processing machine includes various processing processes such as cutting, stripping, crimping, twisting, and tinning. To enable these processing processes to be carried out without interruption, the straightening device described herein prevents the formation of loops between the straightening mechanism and the line pulling device.

[0056] In particular, the straightening device described above is positioned immediately after the container. Typically, the endless lines are drawn into a cable processing machine, and their length is straightened and further processed in the aforementioned processing process, and in particular, cut to the desired length.

[0057] Preferably, a control device for controlling the braking device is provided. The control device is at least partially designed to move the braking device from a first position in which the braking device is in a non-operating state to at least a second position in which the braking device is in an operating state.

[0058] In particular, the control device for controlling the braking device is designed as a selection switch, thereby allowing the braking device to be permanently maintained in an activated state, or thereby allowing the braking device to be alternately maintained in a deactivated state or an activated state, where the braking device is moved from a first position to a second position in the mechanical cycle of the straightening device or cable processing machine.

[0059] Alternatively or additionally, a control device is provided for controlling the magnetic holder of the braking device. This control device is designed to move the magnetic holder of the braking device from a first position in which the magnetic holder of the braking device is in a non-operating state to at least a second position in which the magnetic holder of the braking device is in an operating state.

[0060] Alternatively or additionally, there are control devices for controlling the electromagnets of the braking system. These control devices are designed to control the current in the electromagnets and thus adjust the magnetic field of the electromagnets. In this way, the magnetic braking connections on the rotatable rollers of at least one roller row can be continuously adjusted.

[0061] Alternatively or additionally, a control device is designed to control the straightening mechanism. The movement of the first and / or second roller rows in the straightening mechanism is typically controlled with the help of the control device, and as a result, the straightening of the line can be performed in a controlled and repeatable manner. By controlling the braking device and straightening mechanism described herein with a control device, it becomes possible to coordinate the braking of at least one rotatable roller in the straightening mechanism with the movement of the first and / or second roller rows in the straightening mechanism when straightening the line.

[0062] In particular, the cable processing machine has at least one further straightening mechanism as described above, the at least one further straightening mechanism is positioned at a 90° angle to the first straightening mechanism, and the two straightening mechanisms are positioned adjacent to each other at a distance from each other.

[0063] As described herein, a 90° arrangement relative to each other means the arrangement of the axis of rotation of the rollers of the first straightening mechanism rotated by 90° with respect to the axis of rotation of the rollers of the further straightening mechanism. Thus, improved straightening of the line is possible in the first spatial direction and the further spatial direction, and the two spatial directions are arranged essentially rotated by 90° with respect to each other.

[0064] Advantageously, the cable processing machine has a line pull-in device positioned below the straightening device described above in the transport direction. In this way, the line to be straightened can be easily and automatically pulled through the straightening device described herein.

[0065] An upgrade kit according to the present invention for a cable processing machine comprises a braking device described herein for braking at least one of the rotatable rollers in at least one roller row of a straightening mechanism, and in particular for braking multiple rotatable rollers in at least one roller row of a straightening mechanism. In this way, the straightening mechanism of a cable processing machine can be easily modified with a braking device as described herein.

[0066] The upgrade kit preferably comprises a control device connected to the braking device described herein for controlling the braking device, as described above.

[0067] Further advantages, features, and details of the present invention will become apparent from the following description, in which exemplary embodiments of the present invention are described with reference to the drawings. The first, second, third, or higher lists are used solely to identify the components.

[0068] The list of reference numerals, as well as the technical content of the claims and drawings, is part of this disclosure. These drawings are consistently and comprehensively described. Identical reference numerals indicate identical components, while reference numerals with different subscripts indicate functionally identical or similar components. [Brief explanation of the drawing]

[0069] [Figure 1] A first embodiment of the linearization device according to the present invention is shown in a perspective view. [Figure 2] Figure 1 shows a perspective view of the straightening device, with the straightening mechanism shown separated from the braking device. [Figure 3] Figure 1 shows a side view of the straightening device, with the braking device positioned in a non-operational state. [Figure 4] Figure 1 shows a side view of the straightening device, with the braking device positioned in the operational state. [Figure 5] Figure 1 shows a cross-sectional view of one of the rollers in the roller row of the straightening mechanism in the straightening device. [Figure 6] Figure 1 shows a perspective view of a cable processing machine equipped with the straightening device according to the present invention. [Figure 7] Figure 1 shows the cable straightening device according to the present invention, and Figure 6 shows a perspective view of a further cable straightening device for a cable processing machine. [Figure 8] An upgrade kit according to the present invention for a cable processing machine is shown in a perspective view. [Modes for carrying out the invention]

[0070] Figures 1 to 5 show a straightening device 15 that straightens an electrical line (electrical transmission line, electric wire) or optical line (optical transmission line, optical fiber) 11 within a straightening mechanism 20 along a transport path 16. The straightening mechanism 20 comprises a straightening mechanism housing 22, which houses a first roller row 21 with multiple rotatably mounted rollers 25, and a second roller row 31 with multiple rotatably mounted rollers 35. In these figures and the following figures, a reference number is assigned to one roller 25 representing multiple rollers 25, and to one roller 35 representing multiple rollers 35. The illustrated straightening mechanism 20 is in a closed state, with the two roller rows 21 and 31 approaching each other, and the line 11 passing between the rollers 25 and 35 and resting on the rollers 25 along the transport direction 17. The rollers 25 are positioned offset from the rollers 35 along the transport direction 17. A first roller row 21 is positioned on a first carrier 23, and a second roller row 31 is positioned on a second carrier 33. The two carriers 23 and 33 are connected to a straightening mechanism housing 22. The straightening mechanism 20 comprises a feed drive unit 27 and a swivel drive unit 28. The feed drive unit 27, here comprising a pneumatically controlled drive, feeds the first roller row 21 toward the second roller row 31, thereby reducing the distance between the first roller row 21 and the second roller row 31 until the rollers 35 of the second roller row 31 contact the line 11 and hold the line 11, or until the line 11 is clamped between rollers 25 and 35. The swivel drive unit 28 comprises an adjustment spindle 29 that swivels the first roller row 21 relative to the second roller row 31 at an adjustable angle, thereby the line 11 being straightened is partially clamped or held by the straightening mechanism 20.

[0071] The straightening device 15 has a magnetic braking device 40 for braking the rotatable rollers 25 of the first roller row 21 of the straightening mechanism 20. The braking device 40 has a magnet holder 45 having a plurality of permanent magnets 41-44, the permanent magnets shown herein having a cylindrical structure and being neodymium magnets. The magnet holder 45 is spaced apart from the rotatable rollers 25 and, in the operating state, is in a non-contact braking connection state with the rotatable rollers 25 of the first roller row 21 of the straightening mechanism 20. The braking device 40 is designed as an eddy current brake, which exerts a braking effect on the rotatable rollers 25 when the line 11 is straightened. The braking device 40 acts in particular on the outer ring 25a of the rotatable rollers 25.

[0072] The braking device 40 has a positioning device 50 for moving the magnet holder 45 and comprises a housing 51 and a guide portion 52 positioned on the housing 51. The positioning device 50 here has a drive device 55 for pneumatically adjusting the magnet holder 45 relative to at least one rotatable roller 25 or a plurality of rotatable rollers 25. The positioning device 50 moves the magnet holder 45 from a first position (see Figure 3) where the magnet holder 45 is in a non-operating state to a second position (see Figure 4) where the magnet holder 45 is in an operating state. The positioning device 50 is designed to move the magnet holder 45 horizontally, which here means essentially perpendicular to the axis of rotation 26 of the rotating roller 25.

[0073] The positioning device 50 has an end plate 57 positioned on the housing 51 using a cylinder rod 59. The magnet holder 45 has holes for individually receiving the cylinder rod 59. The magnet holder 45 is mounted on the cylinder pin 59 so as to be movable toward the end plate 57. A pretension spring 58 is positioned on the cylinder pin 59 to apply pretension (preload) to the magnet holder 45 relative to the housing 51, thereby preventing the magnet holder 45 from tilting when it moves from a first position to a second position.

[0074] The braking device 40 is connected to a control device 80 for controlling the braking device 40. The control device 80 is connected to a positioning device 50 via a control line 81 and is designed to move the magnet holder 45 from a first position in which the braking device 40 or magnet holder 45 is in a non-operating state to at least a second position in which the magnet holder 45 is in an operating state. In this way, as the line 11 is straightened, a non-contact braking connection from the permanent magnets 41-44 to the rotatable roller 25 is adjustable. The non-contact braking connection acts primarily on the outer ring 25a of the rotatable roller 25.

[0075] Figure 5 shows a rotatable roller 25 positioned on the roller row 21 of the straightening mechanism 20. The rotatable roller 25 has an inner ring 25b and an outer ring 25a. Between the inner ring 25b and the outer ring 25a is a ball row positioned as a rolling element unit 25c. The inner ring 25b is used to fix the ball row onto the shaft 30 of the roller row 21 of the straightening mechanism 20, and the inner ring 25b is firmly positioned on this shaft 30. The rotatable outer ring 25a is rotatably positioned on this shaft 30 around a rotation axis 26 with the help of the rolling element unit 25c and rotates according to the line pulling speed. The rotatable outer ring 25a has a groove 32 for central guidance of the line 11 being straightened. A roller 35 is positioned on the roller row 31 by a shaft and is configured similarly to roller 25.

[0076] In an alternative embodiment, each roller is fixedly positioned on a rotatable shaft on the roller row. The shaft rotates with the rollers around the axis of rotation, thereby enabling the line to be straightened in the straightening mechanism (not shown).

[0077] Another embodiment of the magnetic braking device of the present invention (not shown herein) has an electromagnet instead of the permanent magnet described above. The magnetic field strength can be changed with the help of a control device for adjusting the magnetic braking connection.

[0078] A method for braking the rotatable roller 25 of the straightening device 15 will be described below with reference to Figures 1, 3, and 4.

[0079] First, the line 11 to be straightened is unloaded from the container and manually pulled into the straightening device 15, where it is placed on the straightening rollers 25 of the first roller row 21. The straightening mechanism 20 is initially in an open position, so that the two roller rows 21 and 31 are sufficiently spaced apart from each other. In a further step, the straightening mechanism 20 is advanced using the feed drive unit 27, so that the rollers 35 of the second roller row 31 are then placed on the line 11. Furthermore, the second roller row 31 is rotated with the help of the swivel drive unit 28 and pressed against the line 11. Next, the line 11 is straightened and pulled through the straightening device 15. The line is pulled in by a power-driven line puller positioned spaced apart from the straightening device 15 in the transport direction (see Figure 7). The rollers 25 of the first roller row 21 and the rollers 35 of the second roller row 31 rotate in a staggered position. For braking, the magnet holder 45 of the braking device 40 is moved from a first position (see Figure 3) where the magnet holder 45 of the braking device 40 is in a non-operating state to a second position (see Figure 4) where the magnet holder 45 of the braking device 40 is in an operating state. In the non-operating state, the magnet holder 45 is located very close to the end plate 57 and the pretension spring 58 is compressed. In the operating state, the magnet holder 45 is located directly below the rotating roller 25 and the pretension spring 58 is relaxed. In a further step, the rotating outer ring 25a of the roller 25 of the first roller row 21 is effectively braked by the permanent magnet positioned on the magnet holder 45, and the braking device exerts a braking effect on the rotating outer ring 25a of the roller 25 without contact, according to the principle of eddy current braking. Thus, the braking device 40 is connected to the rotating outer ring 25a of the roller 25 for braking.

[0080] In an alternative embodiment, each rotatable roller is positioned on a rotating shaft on a roller row on a straightening mechanism and is firmly connected to this rotatable shaft. The rotatable shaft rotates about an axis of rotation, along with the rollers positioned on it, and this axis of rotation extends along the longitudinal range of the rotatable shaft. Non-contact braking acts on the rotating rollers of each roller row (not shown).

[0081] Figure 6 shows a cable processing machine 70 according to the present invention, having a straightening unit 73 and a straightening device 15 as described above. As described herein, the cable processing machine 70 may have various processing processes such as straightening, cutting, stripping, crimping, twisting, and tinning. A container 75 having a line 11 in the form of an endless line is positioned in front of the straightening device 15. The line 11 is drawn into the cable processing machine 70 and straightened within the straightening device 15. To draw the line 11 through the straightening device 15, a line pull-in device 90 is used, positioned below the straightening device 15 in the transport direction, as described below.

[0082] Figure 7 shows a straightening unit 73 having two straightening devices 15 and 15a arranged adjacent to each other, each having two straightening mechanisms 20a to 20d. One of these straightening devices 15, 15a has a braking device 40, as described herein, for braking a rotatable roller in one of the roller rows of the straightening mechanism 20a. The cable processing machine 70 has a control device 80, as described herein, for controlling the braking device 40 of the straightening device 15. Furthermore, the control device 80 is electrically connected by a control line 81 to a feed drive unit, a swivel drive unit of the straightening mechanisms 20a and 20c, and a line pull-in device 90. The line pull-in device 90 of the cable processing machine 70 pulls the line 11 in the transport direction 17 through the straightening mechanisms 20a and 20c. The control device 80 has a processor 85 that processes control commands and transmits them to the drive units 27, 28, 55, the line pull-in device 90, the braking device 40, and / or the straightening mechanisms 20a, 20c. The control commands are transmitted to the drive unit 55, the line pull-in device 90, the braking device 40, and the drive units 27, 28 of the straightening mechanisms 20a and 20c according to a predetermined series of steps. The two straightening mechanisms 20a and 20c are positioned offset from each other by 90°. In one embodiment of the straightening unit not shown, each of the straightening mechanisms 20a to 20d shown in Figure 7 may have a braking device as described herein.

[0083] Figure 8 shows an upgrade kit 100 of the present invention for a cable processing machine, which comprises a braking device 40 as described herein for braking at least one of the rotatable rollers in a roller row of a straightening mechanism, and in particular for braking multiple rotatable rollers in a roller row of a straightening mechanism. The upgrade kit 100 has a control device 80 having a processor 85 connected to a drive unit 55 of a positioning device 50 for controlling the braking device 40. [Explanation of Symbols]

[0084] 11 lines 15 Straightening device 15a Straightening device 16. Transport Route 17 Conveying direction 20 Straightening mechanism 20a~20d Straightening mechanism 21 First row of rollers 22 Straightening mechanism housing 23 First Career Laura, 25 / 21 25a 25 outer ring 25b 25 inner ring 25c 25 rolling element unit 26 25 rotation axis 27 Feed drive unit 28 Swivel drive unit 29 Adjustable spindle 30 25 shaft 31 Second row of rollers 33. Second Career 32 25a groove Laura 35 31 40 Braking device 41-44 Permanent Magnets 45 Magnet holder 50 Positioning device 51 50 Housing 52 Guide section 55 Drive unit 57 End Plate 58 Pretension spring 59 Cylinder rod 70 Cable management machines 73 Straightening Unit 80 Control device 81 Control Line 85 Processors 90 Line pull-in device 100 Upgrade Kit

Claims

1. A straightening device (15; 15a) that straightens an electrical line or optical line (11) along a transport path (16), wherein the electrical line or optical line (11) is drawn out through the straightening device (15; 15a) so as to be repeatedly stopped and re-transported by an external line pull-in device (90), A straightening mechanism (20; 20a to 20d) is provided, having a first roller row (21) and a second roller row (31), which are movable relative to each other, and the transport path of the electrical line or the optical line (11) runs between the roller rows (21, 31), At least one of the two roller rows (21, 31) comprises a plurality of rotatable rollers (25, 35), and each roller (25, 35) in the two roller rows (21, 31) has a rotation axis extending along a direction perpendicular to the conveying path of the electrical line or the optical line (11). A braking device (40) is provided for braking at least one of the rotatable rollers (25, 35) of at least one of the roller rows (21, 31) of the two roller rows (21, 31) of the straightening mechanism (20; 20a to 20d), Line straightening device (15; 15a), characterized in that the braking device (40) is a magnetic braking device configured to cause braking by the rotatable rollers (25, 35) in accordance with the rotational speed of the rotatable rollers (25, 35) generated by the electrical line or optical line (11) drawn out through the line straightening device.

2. The straightening device (15; 15a) according to claim 1, characterized in that, in the operating state, the braking device (40) is at least partially connected to at least one of the rotatable rollers (25, 35) of the straightening mechanism (20; 20a to 20d) in a non-contact braking connection state.

3. The straightening device (15; 15a) according to claim 2, characterized in that the non-contact braking connection is adjustable and acts on a rotatable outer ring (25a) of at least one of the rotatable rollers (25, 35).

4. A straightening device (15; 15a) according to any one of claims 1 to 3, wherein the magnetic braking device comprises at least one permanent magnet (41-44), the magnetic braking device is an eddy current brake or a hysteresis brake, and the braking device (40) further comprises a magnet holder (45) for receiving at least one permanent magnet (41-44).

5. The straightening device (15; 15a) according to claim 1, characterized in that the braking device (40) is spaced apart from at least one of the rotatable rollers (25, 35).

6. The straightening device (15; 15a) according to claim 4, characterized in that the braking device (40) has a positioning device (50) for moving the braking device (40) at least partially from a first position in which the braking device (40) is in a non-operating state to at least a second position in which the braking device (40) is in an operating state.

7. The straightening device (15; 15a) according to claim 6, characterized in that the positioning device (50) has a housing (51), and the housing has a guide portion (52).

8. The straightening device (15; 15a) according to claim 6, characterized in that the positioning device (50) has a drive device (55) that adjusts at least one of the rotatable rollers (25, 35) pneumatically, hydraulically, or electrically.

9. The straightening device (15; 15a) according to claim 4, characterized in that the magnet holder (45) has at least two permanent magnets (41-44), and the magnetic S poles of each of the permanent magnets are essentially oriented in the same direction.

10. The straightening apparatus (15; 15a) according to claim 4, characterized in that at least one permanent magnet (41-44) in the magnet holder (45) is a neodymium magnet.

11. A method for braking at least one rotatable roller (25, 35) of at least one roller row (21, 31) in a straightening device (15; 15a) according to claim 1, A step of straightening at least one electrical line or optical line (11), the step of pulling the at least one electrical line or optical line (11) through the straightening device (15; 15a) so as to repeatedly stop and restart, A step of braking at least one of the rotatable rollers (25, 35) of at least one roller row (21, 31) in the straightening device (15; 15a) with a braking device (40), wherein the braking device (40) is configured to allow adjustable braking without contacting the electrical line or optical line (11), and the braking is caused by the rotatable roller (25, 35) in accordance with the rotational speed of the rotatable roller (25, 35) generated by the electrical line or optical line (11) drawn through the straightening device, A method characterized by including the following.

12. The method according to claim 11, characterized in that the braking device (40) is moved from a first position in which at least a portion of the braking device (40) is in a non-operating state to a second position in which at least a portion of the braking device (40) is in an operating state.

13. The method according to claim 11 or 12, characterized in that the braking device (40) has a non-contact braking action for at least one rotatable roller (25, 35) of the roller row (21, 31) of the straightening device (15; 15a).

14. A cable processing machine (70) comprising a straightening device (15; 15a) as described in claim 1, and a line pulling device (90) that pulls an electrical line or optical line (11) through the straightening device (15; 15a) in a manner that repeatedly stops and restarts, The cable processing machine (70) is characterized in that the straightening device (15; 15a) is positioned immediately behind the container (75), and there is also a control device (80) for controlling the braking device (40), and this control device (80) is designed to control the straightening mechanism (20; 20a to 20d).

15. A braking device (40) for a straightening mechanism (20; 20a to 20d) according to any one of claims 1 to 10, comprising a braking device (40) for braking at least one of the rotatable rollers (25, 35) of at least one roller row (21, 31) of the straightening mechanism (20; 20a to 20d), in an upgrade kit (110) for a cable processing machine, The braking device (40) is a magnetic braking device arranged to generate a braking action by the rotatable rollers (25, 35) in accordance with the rotational speed of the rotatable rollers (25, 35) generated by the electrical line or optical line (11) drawn in through the straightening mechanism (20; 20a to 20d). An upgrade kit (100) for a cable management machine, characterized by the following features.

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