EP3741476B1 - Aligning device for straightening a conduit, method for braking at least one rotatable roll in an aligning device, cable processing machine with an alignment device and and upgrade kit for a cable processing machine - Google Patents

Description

The invention relates to a straightening device for straightening a line according to the preamble of claim 1, a method for braking at least one rotatable roller in such a straightening device according to claim 11, a cable processing machine with such a straightening device according to claim 14 and an upgrade kit for a wire processing machine according to claim 15.

With an increasing number of electronic assemblies in industry, the demands on the quality of the cable harnesses and cable connections between the assemblies also increase. It is therefore all the more important when processing lines or cables to always check the line or cable from the feed, through the cutting to length and further processing at the processing stations of the cable processing machines, and to avoid damage to the line.

The increasing number of cables required also means that wire processing machines have to work faster and faster. The output quantity of the wire processing machines is a significant economic factor and, in addition to the quality, decisive for the customer's purchase decision.

Fully automatic working machines for wire processing must process such. B. cutting, stripping, crimping, twisting and tinning, as quickly as possible. Further processing steps, such as the welding of cables and the automatic winding of the processed cables, are optionally available. For this purpose, endless cables are typically pulled from a bundle, such as a cable drum or a cable barrel, into the cable processing machine and straightened by a straightener. The straightening process relaxes the line, minimizes their inherent twist and enables axially aligned further processing of the same.

the EP 2 399 856 A1 (basis for the preamble of claims 1 and 15) discloses a straightener for straightening lines having an upper and a lower row of rollers. These two rows of rollers can be moved relative to each other, with the conveying path of the line running between the two rows of rollers. The rows of rollers feature multiple rotating rollers for straightening the line.

A disadvantage of the known device is that with this device, during the final stopping process, the line to be straightened is only braked by friction of the rollers and flexing forces in the line.

the JP S62 248 528 A discloses an apparatus for straightening rolled, drawn, and tempered steel wire to minimize twist stress in the wire and then producing coil springs. The device comprises two straightening units, each with two rows of straightening rollers, with the straightening units mechanically straightening the wire in two levels.

the EP 3 290 370 A1 discloses a wire running device for feeding a wire into a feeder. The wire device includes a braking device with a braking roller and with a pressure roller as a pressure element. The brake roller and the pressure roller are arranged opposite one another and are movable relative to one another. Pressure is applied to the wire between the braking roller and the pressure roller, which means that it is braked as required.

A disadvantage of this known device is that the wire is braked mechanically and a high level of friction-based heat is generated in the wire, as a result of which the wire is deformed when it is braked.

the US 3,881,578A discloses a magnetically assisted braking device for rail vehicles with brake blocks for braking the rotational movement of the running wheels of the rail vehicle. A magnetic coil that can be charged with an electrical voltage is on a ferromagnetic Arranged connecting piece between the wheels and together with the ferromagnetic brake blocks forms a closed magnetic circuit through the wheels and the stationary rails, with the help of the magnetic flux an additional attractive braking friction force of the brake blocks is formed on the wheels.

The disadvantage of the known solution is that with this magnet-assisted braking device, a high level of frictional heat is generated in the wheels and this braking device is therefore unsuitable for a cable processing device.

Another braking device for the solution described above for a rail vehicle is in CN 102 556 102 A disclosed, this disclosure neither discloses a direct braking of the running wheels of the rail vehicle nor is it suitable as a braking device for a cable processing device.

the DE 10 2013 002 020 A1 discloses a winding device for winding a strand-shaped winding material with a winding drum and a movable laying arm. An eddy current brake is arranged on the laying arm as a winding material brake, which, if necessary, transmits a braking force directed away from the winding drum to the winding material. With the generation of the braking force on the winding material, the winding material is pretensioned in the conveying direction downstream to the winding material brake.

A disadvantage of this known device is that the braking force of the winding material brake acts directly on the winding material and the winding material with it a tensile stress is applied, as a result of which the winding material is forcibly deformed.

It is the object of the present invention to overcome one or more disadvantages of the prior art. In particular, a straightening device is to be created in which damage to the line to be straightened is prevented based on friction effects when braking the lines to be straightened, and a method for braking at least one rotatable roller in a row of rollers of a straightening device, which allows gentle braking of the line to be straightened line causes. Furthermore, a cable processing machine with the straightening device is to be created in which the quality requirements of the line to be straightened can be maintained and an interruption in the processing process based on a damaged line during straightening is prevented, and an upgrade kit for a cable processing machine is to be created with which a Wire processing machine can be retrofitted.

This object is achieved by the device, method, machine and upgrade kit defined in claims 1, 11, 14 and 15. Advantageous developments are defined in claims 2-10 and 12-13.

A straightening device according to the invention for straightening a line along a conveying path comprises a straightening mechanism with a first row of rollers and with a second row of rollers which can be moved relative to one another and between which the conveying path of the line runs, with at least one of the two rows of rollers having a plurality of rotatable rollers, and with a braking device for braking at least one of the rotatable rollers of at least one of the two rows of rollers of the straightening mechanism is provided. The braking device is designed to exert a braking effect on the roller of at least one of the two rows of rollers that rotates when the line is straightened, thereby enabling this roller to be braked effectively without mechanically overloading or deforming the line to be straightened. The line to be straightened is using a Cable pulling device pulled through the straightening mechanism. Due to the high speed at which the cable is pulled into the straightening device when straightening the cable and the resulting high rotational energy of the rotating rollers in the rows of rollers, stopping the highly dynamic cable pulling device usually causes the cable to loop between the straightening device and the cable pulling device. This loop formation results from the mass inertia of the rotating rollers in the rows of rollers of the straightening device and is formed by the cable lengths trailing from the container. The loop in the cable can then lead to the cable getting caught on components in the wire processing machine, so that production has to be stopped. The renewed start of the straightening process with the straightening device, in which the previously created cable loop is pulled straight by the cable pulling device, inevitably leads to a sudden acceleration of the cable through the cable pulling device, which creates a length error in the cable to be straightened. The direct braking of the roller rotating in at least one of the two rows of rollers with the braking device prevents the aforementioned loop formation between the straightening device and the cable retraction device, so that the aforementioned disadvantages are avoided. In particular, production does not have to be stopped and a resulting length error in the line is prevented.

Preventing the formation of loops and preventing damage to the line that may result from this is particularly advantageous in the case of electrical or optical lines, since these are particularly susceptible to the aforementioned effects and significantly reduce the quality of the straightened lines.

In particular, the braking device is designed to brake a plurality of rotatable rollers of at least one of the two rows of rollers of the straightening mechanism, so that the efficiency of the braking process can be further increased, as a result of which the line to be straightened is further protected. The two Rows of rollers are arranged on the straightening device so that they can be moved relative to one another.

In an activated state, the braking device is preferably at least partially in a non-contact braking active connection with at least one of the rotatable rollers in at least one of the two rows of rollers. In the activated state, the braking device has a braking effect on the at least one rotatable roller in at least one of the two rows of rollers, so that their rotational speed is reduced. In doing so, the braking device does not touch this roll, so that no heat build-up occurs in this braked roll, based on mechanical friction effects.

In particular, the braking device is in an activated state in a non-contact braking operative connection with a plurality of rotatable rollers without causing frictional heat on these plurality of rotatable rollers in at least one of the two rows of rollers. With the braking device described here, frictional heat that would otherwise be transferred to the line to be straightened, which would cause a deformation of the power insulation, for example, and thus damage the line insulation layer, is prevented.

The non-contact active brake connection is preferably adjustable. The braking speed and thus the deceleration, which acts on the at least one rotatable roller, can thus be adapted to different properties of the line to be straightened, such as the line diameter, the line type or line insulating layer thickness. Furthermore, a desired braking effect can be adapted to the retraction speed of the line in the straightening device, so that the line is further protected when braking.

In particular, the at least one rotatable roller comprises an inner ring and an outer ring, with a rolling body unit, such as a row of balls or the like, being arranged between the inner ring and the outer ring. The inner ring is used to attach the ball bearing and the outer ring rotatably arranged thereon on a fixed axis of the first or second row of rollers of the straightening mechanism, the inner ring being arranged fixedly on this fixed axis. The rotatable outer ring is rotatably arranged on this axis with the aid of the rolling body unit and can rotate according to the cable retraction speed.

Alternatively, the at least one rotatable roller is arranged on a rotatably mounted axis on the straightening mechanism and is firmly connected to this rotatable axis. The rotatable axle rotates with the roller mounted thereon about an axis of rotation, which axis of rotation extends along the longitudinal extent of the rotatable axle. In this way, the at least one rotatable roller can be mounted rotatably on the first row of rollers or on the second row of rollers.

In particular, the non-contact active brake connection acts on the rotatable outer ring of at least one of the rotatable rollers. The deceleration during braking thus acts on that area of the rotatable roller that has a larger radius and thus on an area with a high torque, so that the effectiveness of the non-contact braking connection is further increased.

The rotatable outer ring of the at least one rotatable roller advantageously has a groove for guiding the line to be straightened. In this way, an undesired exit from the straightening line can be prevented.

In particular, the non-contact active braking connection acts on the rotatable outer ring of at least one additional, in particular each, of the plurality of rotatable rollers in the rows of rollers, as a result of which the braking effect is further improved.

The braking device is preferably a magnetic braking device, the magnetic braking device comprising at least one permanent magnet or at least one electromagnet. Using magnets, like Permanent magnets or electromagnets, a simple and efficient control or adjustment of the braking effect on the at least one rotating role is possible.

The permanent magnets are advantageously of cylindrical or disc-shaped design, as a result of which they can be arranged in the braking device in a simple manner and aligned in a manner specific to the application. Further alternative embodiments Examples of the shape of the permanent magnets in the braking device would be a square, ring-shaped, round or segmented shape.

In particular, the magnetic braking device is an eddy current brake. The eddy currents induced by the eddy current brake in the at least one rotating roller are generated by the magnetic field lines, with a system of forces being created which brakes one rotating roller or the rotating outer ring of this roller. The resulting heating in the rotating roller or in the rotating outer ring of this roller and the heat transferred from it to the line to be straightened is negligible compared to the heating of the line to be straightened when the line to be straightened is mechanically decelerated.

Alternatively, the magnetic braking device is a hysteresis brake, which includes at least two permanent magnets and a positioning unit for moving the at least two permanent magnets. The at least one rotatable roller described here is designed as a hysteresis disc or hysteresis ring made of a magnetic material, for example a ferromagnetic material, of the hysteresis brake. The at least two permanent magnets bring about a flux of lines of force within the at least one rotatable roller. The operating principle applies here: opposing magnetic poles result in the smallest torque. However, if the south and north poles of the magnets alternate along the circumference of the hysteresis disc, the strongest reversal of magnetization takes place and the torque is greatest. By changing the angle of the magnetic pole superimposition, the torque is infinitely adjustable and there If there are no touching surfaces, the setting will remain indefinitely. The torque applied to the at least one rotatable roller is distributed evenly regardless of the speed of this roller and thus from standstill to maximum speed.

The rotatable outer ring of the roller is advantageously made of an electrically conductive material, for example steel, copper, aluminum or the like. It is possible to generate the braking effect through the magnetic field lines of the permanent magnet in the rotating outer ring of the at least one rotatable roller in the form of eddy currents, as long as the rotatable outer ring is rotating. The eddy currents generated in the rotating outer ring of the at least one rotatable roller are strongest at high rotational speeds and steadily decrease when the rotational speed is reduced. The eddy currents in the rotatable outer ring of the at least one rotatable roller brake the rotation of the outer ring without contact and very effectively. If the outer ring is not rotating, no eddy currents are generated.

The braking device also advantageously has a magnet receptacle for receiving at least one permanent magnet. The magnet holder allows easy placement of the permanent magnet on the braking device. The at least one permanent magnet can be detachably arranged on the magnet holder so that it can be separated from the magnet holder and the permanent magnet can be replaced without tools.

In particular, the braking device has a magnet receptacle for holding a plurality of permanent magnets, so that a plurality of permanent magnets can simultaneously contribute to the active braking connection and the braking effect of the plurality of permanent magnets on the at least one rotatable roller in at least one of the two rows of rollers is improved.

The braking device is preferably spaced apart from the at least one rotatable roller. The braking device is horizontal spaced and / or vertically spaced from the at least one rotatable roller, so that the non-contact braking device has a simple, space-saving design. The spacing of the braking device from the at least one rotatable roller enables simple servicing of the braking device, since the components of the braking device are easily accessible to a user.

Preferably, the braking device comprises a positioning device for at least partially moving the braking device from a first position in which the braking device is in an inactive state to at least a second position in which the braking device is in an activated state. In the inactive state, there is no braking effect whatsoever on the at least one rotatable roller in the row of rollers, so that the straightening of the line can be carried out largely without resistance. The braking device can be activated directly with the aid of the positioning device, since the distance from the braking device to the at least one rotatable roller is reduced, so that the braking effect is formed on at least this one rotatable roller in the row of rollers.

In particular, the positioning device is designed as a lifting device, which is approached vertically, essentially normal to the axis of rotation of the rotatable roller, towards the at least one rotatable roller. This allows a simple positioning device to be implemented.

Alternatively, the positioning device is designed to move the braking device horizontally, essentially along the axis of rotation of the rotatable roller, so that the positioning device can be arranged in a space-saving manner in the area of one of the rows of straightening rollers.

The magnet holder can advantageously be transferred from a first position, in which the magnet holder or magnet is in an inactive state, to at least a second position, in which the magnet holder or magnet is in an activated state. Thus, at least one component of the braking device, namely the magnet mount, is movably arranged on the braking device. Therewith the number of moving parts can be reduced, whereby the braking device is structurally simpler and less expensive.

The positioning device is advantageously designed as an electric crank drive. With the help of an electric crank drive, the braking device or the magnet holder can be moved quickly and continuously or steadily from a first position to a further position.

The positioning device preferably has a housing, whereby movable components of the positioning device are covered and a high level of safety is provided. Furthermore, this can prevent a cable loop from forming on the positioning device or a cable loop from forming within the straightening unit of the straightening device.

In particular, the housing has a guide section so that the braking device can be arranged on the straightening mechanism in a precise and reproducible manner.

The positioning device preferably has a drive device which adjusts at least the magnet receptacle pneumatically, hydraulically or electrically relative to the at least one rotatable roller. This drive device enables a controllable adjustment of the magnet holder relative to the rotatable rollers, with this advantageously continuously adjusting the distance between the magnet holder and the at least one rotatable roller.

Advantageously, the positioning device includes an end plate, which has at least one elastic element, such as a prestressing spring. With the help of the elastic element, at least the magnet holder can be pretensioned on the braking device, so that the magnet holder can be prevented from tilting when the braking device or the magnet holder is transferred from the inactive state of the magnets to the activated state of the magnets.

The magnet holder preferably has at least two permanent magnets, the respective magnetic south poles of which essentially point in the same direction. The existing magnetic fields of the permanent magnets thus have the same course of field lines, so that the active braking connection between the at least one rotatable roller and the braking device is strengthened.

At least one permanent magnet in the magnet holder is preferably a neodymium magnet. Neodymium magnets have a particularly high field strength and are robust, so that the braking device hardly needs any maintenance services.

• Begradigen zumindest einer Leitung, wobei die zumindest eine Leitung durch die Richtvorrichtung gezogen wird, und
• Bremsen zumindest einer der drehbaren Rollen in zumindest einer Rollenreihe der Richtvorrichtung mit einer Bremsvorrichtung.

The method according to the invention for braking at least one rotatable roller in at least one row of rollers in a straightening device, as described here, comprises at least the following steps:

• straightening at least one line, wherein the at least one line is pulled through the straightening device, and
• Braking at least one of the rotatable rollers in at least one row of rollers of the straightening device with a braking device.

The method enables this rotatable roller to be effectively braked in one of the rows of rollers without mechanically stressing or deforming the line to be straightened. As previously disclosed, this prevents looping of the line.

The line to be straightened is advantageously unwound from a container and drawn into the straightening device. As described here, a bundle is understood to be a cable drum, a coiled product, a cable barrel or the like in which, for example, an endless cable is arranged, whereby many cable lengths of an endless cable can be straightened in a short time.

Preferably, before the aforementioned braking of the at least one rotatable roller in at least one row of rollers of the straightening device, the braking device is at least partially moved from a first position in in which the braking device is in an inactive state, at least into a second position in which the braking device is in an activated state. In the inactive state of the braking device, no braking operative connection is exerted on the at least one rotatable roller of the row of rollers. This means that the at least one rotatable roller is not permanently braked, which prevents a permanent build-up of heat in the at least one rotatable roller of the row of rollers.

Advantageously, before the aforementioned braking of the at least one rotatable roller of the row of rollers of the straightening device, the magnetic mount of the braking device is transferred from a first position, in which the magnetic mount of the braking device is in an inactive state, to at least a second position, in which the Magnetic recording of the braking device is in an activated state.

The braking device preferably has a non-contact braking effect on the at least one rotatable roller of the at least one row of rollers of the straightening device. This prevents heat build-up due to mechanical friction, so that the at least one rotatable roller has a long service life and thus a long maintenance service interval.

A wire processing machine according to the invention comprises a straightening device as described above. As described here, a wire processing machine includes various processing processes, such as e.g. B. cutting to length, stripping, crimping, twisting and tinning. So that these processing steps can be carried out without interruption, the straightening device described here prevents the formation of loops between the straightening mechanism and the cable-drawing device.

In particular, the straightening device as described above is arranged immediately after a container. Typically, endless cables are drawn into a cable processing machine and their cable lengths are straightened and further processed there in the aforementioned processing methods, in particular cut to a desired length.

According to the invention, there is a control device for controlling the braking device. The control device is designed to transfer the braking device, at least in sections, from a first position, in which the braking device is in an inactive state, to at least a second position, in which the braking device is in an activated state.

In particular, the control device for controlling the braking device is designed as a selection switch, with the help of which the braking device can either be kept permanently in the activated state or with which the braking device can be kept alternately in the inactive or activated state, with the braking device in the machine cycle of the straightening device or the Wire processing machine is transferred from the first position to the second position.

The control device is provided for controlling the magnet pickup of the braking device. This control device is designed to move the magnetic mount of the braking device from a first position, in which the magnetic mount of the braking device is in an inactive state, to at least a second position, in which the magnetic mount of the braking device is in an activated state.

The control device is provided for controlling an electromagnet of the braking device. This control device is designed to control the electric current in the electromagnet and thus set the magnetic field of the electromagnet. In this way, the active magnetic braking connection can be continuously adjusted to the rotatable rollers of the at least one row of rollers.

The control device is designed to control the straightening mechanism. The movements of the first row of rollers and/or the second row of rollers in a straightener are typically using the Regulated control device so that the straightening of the line is controlled and reproducible executable. Controlling the braking device described herein and the straightener with a controller enables the braking of the at least one rotatable roller in the straightener to be coordinated with the movement of the first and/or second row of rollers in the straightener when straightening the line.

In particular, the cable processing machine has at least one further straightening unit as described above, the at least one further straightening unit being arranged at 90° to the first straightening unit and the two straightening units being spaced apart and arranged adjacent to one another.

As described here, an arrangement of 90° to one another means the arrangement of the axis of rotation of the rollers of the first straightening unit rotated by 90° relative to the axis of rotation of the rollers of the further straightening unit. Improved straightening of the line is thus possible in a first spatial direction and in a further spatial direction, with the two spatial directions being arranged rotated essentially by 90° with respect to one another.

Advantageously, the cable processing machine has a cable drawing-in device, which is arranged downstream of the straightening device as described above in the conveying direction. In this way, the line to be straightened can simply be pulled automatically through the straightening device described here.

An upgrade kit according to the invention for a wire processing machine includes a braking device as described here for braking at least one of the rotatable rollers in at least one row of rollers of the straightening unit, in particular for braking several rotatable rollers in at least one row of rollers of the straightening unit. A straightening unit of a wire processing machine can thus be easily retrofitted with a braking device as described here.

According to the invention, the upgrade kit comprises a control device which is connected to the braking device described here for controlling the braking device as described above.

Further advantages, features and details of the invention result from the following description, in which exemplary embodiments of the invention are described with reference to the figures. Enumerations such as first, second, third or further only serve to identify the components.

Fig. 1

eine erste Ausführungsform einer erfindungsgemässen Richtvorrichtung in einer perspektivischen Ansicht,

Fig. 2

die Richtvorrichtung gemäss Fig. 1 in einer perspektivischen Ansicht, wobei das Richtwerk von der Bremsvorrichtung getrennt dargestellt ist,

Fig. 3

die Richtvorrichtung gemäss Fig. 1 in einer Seitenansicht, wobei die Bremsvorrichtung in einem inaktiven Zustand angeordnet ist,

Fig. 4

die Richtvorrichtung gemäss Fig. 1 in einer Seitenansicht, wobei die Bremsvorrichtung in einem aktivierten Zustand angeordnet ist,

Fig. 5

eine Rolle einer der Rollenreihen des Richtwerks in der Richtvorrichtung gemäss Fig. 1 in einer Schnittansicht,

Fig. 6

eine Kabelverarbeitungsmaschine mit einer erfindungsgemässen Richtvorrichtung gemäss Fig. 1 in einer perspektivischen Ansicht,

Fig. 7

die erfindungsgemässe Richtvorrichtung gemäss Fig. 1 und eine weitere Richtvorrichtung an der Kabelverarbeitungsmaschine gemäss Fig. 6 in einer perspektivischen Ansicht, und

Fig. 8

ein erfindungsgemässes Upgrade-Kit für eine Kabelverarbeitungsmaschine in einer perspektivischen Ansicht.

Like the technical content of the patent claims and figures, the list of reference symbols is part of the disclosure. The figures are described coherently and comprehensively. The same reference symbols denote the same components, while reference symbols with different indices indicate functionally identical or similar components. They show:

1

a first embodiment of a straightening device according to the invention in a perspective view,

2

the straightening device according to 1 in a perspective view, with the straightening mechanism being shown separately from the braking device,

3

the straightening device according to 1 in a side view, with the braking device being arranged in an inactive state,

4

the straightening device according to 1 in a side view, with the braking device being arranged in an activated state,

figure 5

a roll according to one of the rows of rolls of the straightener in the straightening device 1 in a sectional view,

6

a cable processing machine with a straightening device according to the invention 1 in a perspective view,

7

the straightening device according to the invention 1 and a further straightening device on the cable processing machine according to 6 in a perspective view, and

8

an inventive upgrade kit for a wire processing machine in a perspective view.

Figures 1 to 5 show a straightening device 15 for straightening an electrical or optical cable 11 in a straightening unit 20 along a conveying path 16. The straightening unit 20 comprises a straightening unit housing 22 on which a first row of rollers 21 with a plurality of rotatably mounted rollers 25 is arranged and on which a second row of rollers 31 is arranged with a plurality of rotatably mounted rollers 35. In these figures and in the following figures, a roller 25 representing the plurality of rollers 25 and a roller 35 representing the plurality of rollers 35 are provided with the respective reference symbols. The straightening unit 20 shown is in a closed state, in which the two rows of rollers 21 and 31 are approaching one another and the line 11 is guided through between the rollers 25 and the rollers 35 and rests on the rollers 25 along a conveying direction 17 . The rollers 25 are offset from the rollers 35 along the conveying direction 17 . The first row of rollers 21 is arranged on a first carrier 23 and the second row of rollers 31 is arranged on a second carrier 33 . The two carriers 23 and 33 are connected to the housing 22 of the straightening mechanism. The straightening mechanism 20 comprises an infeed drive 27 and a pivoting drive 28. The infeed drive 27 here comprises a pneumatically controlled drive and feeds the first row of rollers 21 to the second row of rollers 31, so that the distance between the first row of rollers 21 and the second row of rollers 31 can be reduced. until the rollers 35 of the second row of rollers 31 touch the line 11 and hold the line 11 or until the line 11 is clamped between the rollers 25 and the rollers 35. The pivot drive 28 includes an adjustment spindle 29, which pivots the first row of rollers 21 at an adjustable angle to the second row of rollers 31, so that to be straightened Line 11 is partially pinched or held in the straightening unit 20.

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

Braking device 40 has a positioning device 50 for moving magnet mount 45 and includes a housing 51 and a guide section 52 arranged on housing 51. Positioning device 50 has a drive device 55, which here pneumatically moves magnet mount 45 relative to the at least one rotatable roller 25 or adjusted to the plurality of rotatable rollers 25. The positioning device 50 moves the magnet holder 45 from a first position in which the magnet holder 45 is in an inactive state (see FIG 3 ), to a second position in which the magnet receptacle 45 is in an activated state (see 4 ). The positioning device 50 is designed to move the magnet receptacle 45 horizontally, which in this case means essentially normal to the axis of rotation 26 of the rotating roller 25 .

The positioning device 50 has an end plate 57 which is arranged on the housing 51 with the aid of cylinder rods 59 . The magnet holder 45 has bores which accommodate the cylinder rods 59 individually. The magnet receptacle 45 is movably mounted on the cylindrical pins 59 towards the end plate 57 . At the cylinder pins 59 are Prestressing springs 58 are arranged, which prestress the magnet holder 45 relative to the housing 51, so that the magnet holder 45 can be prevented from tilting when the magnet holder 45 is transferred from a first position to a second position.

The braking device 40 is connected to a control device 80 for controlling the braking device 40 . The control device 80 is connected to the positioning device 50 by means of control lines 81 and is designed to move the magnet holder 45 from a first position, in which the braking device 40 or the magnet holder 45 is in an inactive state, to at least a second position in which the magnetic receptacle 45 is in an activated state. In this way, a non-contact active braking connection can be set by the permanent magnets 41-44 on the rotatable rollers 25 when the line 11 is being straightened. The non-contact active braking connection acts primarily on the outer ring 25a of the rotatable rollers 25.

figure 5 shows the rotatable roller 25, which is arranged on the row of rollers 21 of the straightening mechanism 20. The rotatable roller 25 has an inner ring 25b and an outer ring 25a. A row of balls is arranged between the inner ring 25b and the outer ring 25a as a rolling element unit 25c. The inner ring 25b serves to fasten the row of balls on the axis 30 of the row of rollers 21 of the straightening mechanism 20, the inner ring 25b being arranged on this axis 30 in a fixed manner. The rotatable outer ring 25a is arranged on this axis 30 with the aid of the rolling element unit 25c so as to be rotatable about the axis of rotation 26 and rotates in accordance with the cable retraction speed. The rotatable outer ring 25a has a groove 32 for guiding the line 11 to be straightened in the middle. The rollers 35, which are arranged on the row of rollers 31 by means of an axle, are constructed in the same way as the rollers 25.

In an alternative embodiment, the rollers are each arranged fixedly on rotatable axles on the row of rollers. The axles rotate with the rollers around the axis of rotation, so that the lines can be straightened in the straightener (not shown).

Another embodiment of the inventive magnetic braking device (not shown here) includes an electromagnet instead of the permanent magnets previously described. The magnetic field strength can be changed with the help of the control device for adjusting the magnetic brake connection.

The method for braking the rotatable roller 25 in the straightening device 15 is described below with reference to FIG 1 , 3 and 4 described.

First, the line 11 to be straightened is unwound from a container, drawn manually into the straightening device 15 and placed on the straightening rollers 25 of the first row 21 of rollers. The straightening mechanism 20 is initially in an open state, so that the two rows of rollers 21 and 31 are sufficiently far apart from one another. In a further step, the straightening unit 20 is advanced with the infeed drive 27 so that the rollers 35 of the second row of rollers 31 then rest on the line 11 . Furthermore, the second row of rollers 31 is pivoted with the aid of the pivoting drive 28 and pressed onto the line 11 . The line 11 is then straightened, the line 11 being pulled through the straightening device 15 . The cable is pulled in by a power-driven cable pull-in device, which is arranged at a distance from the straightening device 15 in the conveying direction (see FIG 7 ). The rollers 25 of the first row of rollers 21 and the rollers 35 of the second row of rollers 31 are set in rotation. For braking, the magnet holder 45 of the braking device 40 is moved from a first position in which the magnet holder 45 of the braking device 40 is in an inactive state (see FIG 3 ), transferred to a second position in which the magnetic receptacle 45 of the braking device 40 is in an activated state (see 4 ). In the inactive state, the magnet receptacle 45 is in close proximity to the end plate 57 with the biasing springs 58 in the compressed state. When activated, the magnet receptacle 45 is located immediately below the rotating rollers 25, with the biasing springs 58 in are in a relaxed state. In a further step, the rotating outer rings 25a of the rollers 25 of the first row of rollers 21 are effectively braked with the permanent magnets arranged on the magnet receptacle 45, the braking device acting on the rotating outer rings 25a of the rollers 25 according to the principle of the eddy current brake, without to touch these. Thus, the braking device 40 is in a braking operative connection with the rotating outer rings 25a of the rollers 25.

In an alternative embodiment, the rotatable rollers are each arranged on a rotating axle on the row of rollers on the straightening mechanism and are firmly connected to this rotatable axle. The rotatable axle rotates with the roller mounted thereon about an axis of rotation, which axis of rotation extends along the longitudinal extent of the rotatable axle. The non-contact braking effect acts on the rotating rollers of the respective row of rollers (not shown).

6 shows a wire processing machine 70 according to the invention with a straightening unit 73 and with a straightening device 15 as described above. B. straightening, cutting to length, stripping, crimping, twisting and tinning. In front of the straightening device 15, a container 75 is arranged, which has a line 11 in the form of an endless line. The line 11 is drawn into the cable processing machine 70 and straightened in the straightening device 15 . To pull the line 11 through the straightening device 15, a line pulling device 90 is used, as described below, which is arranged downstream of the straightening device 15 in the conveying direction.

7 shows the straightening unit 73 with two straightening devices 15 and 15a arranged next to one another, which each have two straightening units 20a - 20d. One of these straightening devices 15, 15a has a braking device 40, as described here, for braking the rotatable rollers in one of the rows of rollers of the straightening mechanism 20a. The wire processing machine 70 has one as described here Control device 80 for controlling the braking device 40 of the straightening device 15 . In addition, the control device 80 is electrically connected to the infeed drive, the swivel drive of the straightening units 20a and 20c and to a line pull-in device 90 by means of the control lines 81 . The cable pulling device 90 of the cable processing machine 70 pulls the cable 11 in the conveying direction 17 through the straightening units 20a and 20c. The control device 80 has a processor 85 which processes control commands and transmits them to the drive device 27, 28 and 55, to the cable retraction device 90 and to the braking device 40 and/or the straightening units 20a and 20c. The control commands are transmitted according to a predefined sequence of steps to the drive devices 55, to the cable retraction device 90 and to the braking device 40 and the drive devices 27, 28 of the straightening units 20a and 20c. The two straightening units 20a and 20c are offset from one another by 90°. In an embodiment of the straightening unit that is not shown, each of the 7 shown straighteners 20a-20d have a braking device, as described here present.

8 shows an upgrade kit 100 according to the invention for a wire processing machine, which includes a braking device 40 as described here for braking at least one of the rotatable rollers in a row of rollers of a straightening unit, in particular for braking a plurality of rotatable rollers in a row of rollers of a straightening unit. The upgrade kit 100 has a control device 80 with a processor 85 which is connected to the drive device 55 of the positioning device 50 for controlling the braking device 40 .

Reference List

11

Management

15

straightening device

15a

straightening device

16

conveyor path

17

conveying direction

20

straightener

20a-20d

straighteners

21

first row of rollers

22

straightener housing

23

first carrier

25

rolls of 21

25a

Outer ring of 25

25b

inner ring of 25

25c

rolling element unit of 25

26

Axis of rotation from 25

27

infeed drive

28

slewing drive

29

adjustment spindle

30

Axis of 25

31

second row of rollers

33

second carrier

32

groove of 25a

35

rolls of 31

40

braking device

41 - 44

permanent magnets

45

magnetic recording

50

positioning device

51

housing of 50

52

guide section

55

drive device

57

end plate

58

bias springs

59

cylinder rods

70

wire processing machine

73

straightening unit

80

control device

81

control lines

85

processor

90

cable retraction device

100

upgrade kit

Claims (15)

1. Straightening device (15; 15a) for aligning a line (11), in particular an electrical or optical along a delivery route (16), comprising a straightening stand (20; 20a-20d), with a first row of rollers (21) and with a second row of rollers (31) which are movable relative to each other and between which the delivery route of the line passes, wherein at least one of the two rows of rollers (21, 31) has multiple rotatable rollers (25, 35), characterized in that a braking apparatus (40) is provided for braking at least one of the rotatable rollers (25, 35) from at least one of the two rows of rollers (21, 31) in the straightening stand (20; 20a-20d), in particular for braking multiple rotatable rollers (25, 35) from at least one of the two rows of rollers (21, 31) in the straightening stand (20; 20a-20d), and a control device (80) is provided for controlling the braking apparatus for at least partially moving the braking apparatus (40) from a first position, in which the braking apparatus is in an inactive state, at least into a second position, in which the braking apparatus is in an activated state.
2. Straightening device (15; 15a) according to Claim 1, characterized in that in an activated state at least a portion of the braking apparatus (40) is in a contactless operative braking connection with at least one of the rotatable rollers (25, 35) in the straightening stand (20; 20a-20d), in particular with multiple rotatable rollers (25, 35) in the straightening stand (20; 20a-20d).
3. Straightening device (15; 15a) according to Claim 2, characterized in that the contactless operative braking connection can be adjusted, and in particular acts on the rotatable outer ring (25a) of at least one of the rotatable rollers (25, 35).
4. Straightening device (15; 15a) according to any one of Claims 1 to 3, characterized in that the braking apparatus (40) is a magnetic braking apparatus, wherein the magnetic braking apparatus comprises at least one permanent magnets (41-44) or at least one electromagnet, and wherein the magnetic braking apparatus is in particular an eddy current brake or a hysteresis brake, and further advantageously the braking apparatus (40) has a magnet holder (45) for accommodating at least one permanent magnet (41-44), in particular a plurality of permanent magnets (41-44).
5. Straightening device (15; 15a) according to any one of Claims 1 to 4, characterized in that the braking apparatus (40) is located at a distance from the at least one rotatable roller (25, 35).
6. Straightening device (15; 15a) according to any one of Claims 1 to 5, characterized in that the braking apparatus (40) comprises a positioning apparatus (50) for at least partially moving the braking apparatus (40) from a first position, in which the braking apparatus (40) is in an inactive state, at least into a second position, in which the braking apparatus (40) is in an activated state.
7. Straightening device (15; 15a) according to Claim 6, characterized in that the positioning apparatus (50) has a housing (51), wherein in particular the housing has a guide section (52).
8. Straightening device (15; 15a) according to Claim 6 or 7, characterized in that the positioning apparatus (50) has a drive device (55), which displaces at least the magnet holder (45) relative to the at least one rotatable roller (25, 35) pneumatically, hydraulically or electrically.
9. Straightening device (15; 15a) according to any one of Claims 4 to 8, characterized in that the magnet holder (45) has at least two permanent magnets (41-44), the magnetic south poles of each of which face in substantially the same direction.
10. Straightening device (15; 15a) according to any one of Claims 4 to 9, characterized in that at least one permanent magnet (41-44) in the magnet holder (45) is a neodymium magnet.
11. Method for braking at least one rotatable roller (25, 35) from at least one row of rollers (21, 31) in a straightening device (15; 15a) according to one of the preceding claims, wherein the method comprises the following steps:

    - aligning at least one line (11), wherein the at least one line (11) is drawn through the straightening device (15; 15a), and

    - braking at least one of the rotatable rollers (25, 35) from at least one row of rollers (21, 31) in the straightening device (15; 25) with a braking apparatus (40).
12. Method according to Claim 11, characterized in that at least a portion of the braking apparatus (40) is shifted from a first position, in which the braking apparatus (40) is in an inactive state, into a second position, in which the braking apparatus (40) is in an activated state.
13. Method according to Claim 11 or 12, characterized in that the braking apparatus (40) acts in braking manner contactlessly on the at least one rotatable roller (25, 35) of the row of rollers (21, 31) in the straightening device (15; 15a).
14. Cable processing machine (70), comprising a straightening device (15; 15a) according to any one of Claims 1 to 10, wherein in particular the straightening device (15; 15a) is arranged immediately after a container (75), and further advantageously a control device (80) for controlling the braking apparatus (40) is present, and in particular said control device (40) is designed to control the straightening stand (20; 20a-20d).
15. Upgrade kit (100) for a cable processing machine, comprising a braking apparatus (40) for braking at least one of the rotatable rollers (25, 35) from at least one row of rollers (21, 31) in the straightening stand (20; 20a-20d), in particular for braking multiple rotatable rollers (25, 35) from at least one row of rollers (21, 31) in the straightening stand (20; 20a-20d), and a control device (80) for controlling the braking apparatus for at least partially moving the braking apparatus (40) from a first position, in which the braking apparatus is in an inactive state, at least into a second position, in which the braking apparatus is in an activated state.

Images