CONDUCTOR TRANSPORTATION DEVICE, IN PARTICULAR FOR CABLES TO BE PROCESSED IN CABLE-PROCESSING MACHINES

Abstract

A conductor transportation device for cables has a pivoting conductor conveyor. A first drive moves the conductor conveyor about a pivotal axis. The conductor conveyor has a conveyance (30a) such as, a conveyor belt running around a drive roller and a roller, together with a pressure application. A second drive is present for the. The axes of rotation of rollers (30b, c, e, f) for the conveyance and pressure application are parallel to one another and also to the pivotal axis of the conductor conveyor. A drive axis of the drive is coincident with one of the axes of rotation of the rollers. One of the axes of rotation of the rollers is coincident with the pivotal axis for the conductor conveyor. The actuation paths of the pivotal axis and the conveyor roller or the driven roller are spaced apart.

Claims

1. A conductor transport device for cables to be processed in cable-processing machines, comprising: a conductor conveyor (30), mounted such that it can pivot, for a conductor that is to be drawn in and transported, a first drive (36a) fixedly connected with a base frame (G) for purposes of achieving a precisely defined pivotal movement of the conductor conveyor (30) about a pivotal axis (31), at least one driven mechanism of conveyance (30a) having a driven conveyor roller or a conveyor belt running around at least one drive roller (30b) and a further roller (30c), and an opposing element of pressure application (30d) having a pressure roller or a pressure belt running around at least two rollers (30e, 30f), wherein the mechanism of conveyance (30a) and the element of pressure application (30d) are arranged on a pivotable conductor conveyor (30), with a second drive (36b) preferably fixedly connected with the base frame (G) for at least the driven conveyor roller or the drive roller (30b), wherein the axes of rotation of all rollers (30b, c, e, f) run parallel to one another and also parallel to the pivotal axis (31) of the conductor conveyor (30), wherein one of the axes of rotation of the rollers (30b, c, e, f) is coincident with the pivotal axis (31) for the conductor conveyor (30), wherein one drive axis of the drive (36b) for the conveyor rollers or the driven rollers (30b) of the conductor conveyor (30) is coincident with one of the axes of rotation of the rollers (30b, c, e, f), and wherein the actuation path of the pivotal axis (31) and the conveyor roller or the driven roller (30b) are separated.

2. The device in accordance with claim 1, wherein the drive axis of the conveyor roller or the driven roller (30b) is coincident with the axis of rotation (33) of the conveyor roller or the driven roller (30b).

3. The device in accordance with claim 1, wherein the drive axis (37a) for the conductor conveyor (30) is coincident with the pivotal axis (31) for the conductor conveyor (30).

4. The device in accordance with claim 3, wherein the actuation path of the pivotal axis (31) has a drive means with a drive axis (37a) and a pivot belt (34), which can be moved by means of the drive axis (37a), wherein the drive axis (37a) and the pivotal axis (31) run parallel to one another.

5. The device in accordance with claim 4, wherein the actuation path of the conveyor rollers or the driven roller (30b) has a drive (36b) with a drive axis, wherein a flexible shaft coupling (35) connects the drive axis with the conveyor rollers or the driven rollers (30b).

6. The device in accordance with claim 1, wherein at least one pressure roller, or one of the rollers (30e, 30f) for a pressure belt (30d), can be driven by means of the drive (36b) of the conveyor rollers or the driven roller (30b), wherein either an actuation path branches off from the drive axis, or an actuation path of another roller on the conductor conveyor (30) leads onward to a pressure roller or one of the rollers (30e, 30f) for the pressure belt (30d).

7. The device in accordance with claim 1, wherein the element of pressure application (30d) can be adjusted relative to the means of conveyance (30a) in a perpendicular direction to the axes of rotation.

8. The device in accordance with claim 1, wherein a pitch axis (38) runs perpendicular to the pivotal axis (31), on which the conductor conveyor (30) is fitted such that it can be pivoted.

9. The device in accordance with claim 8, wherein a drive is provided for the pivotal movement of the conductor conveyor (30) about the pitch axis (38) in at least one pivotal direction, and preferably a spring element (39) biases the conductor conveyor (30) against the action of the drive.

10. A cable-processing machine, comprising: at least two processing stations for at least one end of a cable, and a conductor transportation device for purposes of conveying the cable in its longitudinal direction and between the processing stations, wherein the conductor transportation device includes: a conductor conveyor (30), mounted such that it can pivot, for a conductor that is to be drawn in and transported, a first drive (36a) fixedly connected with a base frame (G) for purposes of achieving a precisely defined pivotal movement of the conductor conveyor (30) about a pivotal axis (31), at least one driven mechanism of conveyance (30a) having a driven conveyor roller or a conveyor belt running around at least one drive roller (30b) and a further roller (30c), and an opposing element of pressure application (30d) having a pressure roller or a pressure belt running around at least two rollers (30e, 30f), wherein the mechanism of conveyance (30a) and the element of pressure application (30d) are arranged on a pivotable conductor conveyor (30), with a second drive (36b) preferably fixedly connected with the base frame (G) for at least the driven conveyor roller or the drive roller (30b), wherein the axes of rotation of all rollers (30b, c, e, f) run parallel to one another and also parallel to the pivotal axis (31) of the conductor conveyor (30), wherein one of the axes of rotation of the rollers (30b, c, e, f) is coincident with the pivotal axis (31) for the conductor conveyor (30), wherein one drive axis of the drive (36b) for the conveyor rollers or the driven rollers (30b) of the conductor conveyor (30) is coincident with one of the axes of rotation of the rollers (30b, c, e, f), and wherein the actuation path of the pivotal axis (31) and the conveyor roller or the driven roller (30b) are separated.

11. The machine in accordance with claim 10, wherein: one of the processing stations is a crimping station, and a pitch axis (38) runs perpendicular to the pivotal axis (31), on which the conductor conveyor (30) is fitted such that it can be pivoted, and the pivotal movement of the end of the conductor conveyor (30) remote from the pitch axis (38) in the direction of a lower crimping die arranged in the crimping station takes place by means of the drive, and the movement in the counter-direction is preferably effected by the application of a force by means of a spring element (39).

12. The machine in accordance with claim 11, wherein the drive is formed by the press slide present in the crimping station and a ram attached to the press slide, which ram presses the conductor conveyor (30) downwards at the start of the crimping process.

Description

BRIEF DESCRIPTION OF THE DRAWING

[0022] The list of reference symbols is an integral part of the disclosure, as is also the technical content of the patent claims and the figures. The figures are described coherently and comprehensively. The same reference symbols denote the same components; reference symbols with different indices specify components with the same or similar functions. Here:

[0023] FIG. 1 shows an exemplary view of the inventive conductor transportation device from above,

[0024] FIG. 2 shows a perspective view of the conductor transportation device of FIG. 1 with the conductor conveyor in a first pivotal position,

[0025] FIG. 3 shows a view corresponding to FIG. 2 with the conductor conveyor in a second pivotal position,

[0026] FIG. 4 shows a side view of the conductor transportation device of FIGS. 1 to 3, with the conductor conveyor in a lowered position,

[0027] FIG. 5 shows a view of the conductor transportation device in FIG. 1 from the front, with the conductor conveyor in the horizontally aligned position for purposes of conveying the cable, and

[0028] FIG. 6 shows a view corresponding to FIG. 5, but with the conductor conveyor in a lowered position, corresponding to that in FIG. 4.

DETAILED DESCRIPTION

[0029] As can be seen in FIG. 1 the inventive conductor transportation device comprises a base frame G, on which is mounted a conductor conveyor 30 that can pivot about at least a first axis 31. The axis 31 is usually oriented essentially vertically, so that the movement of the conductor conveyorand also the cable that is transported by the lattertakes place in an essentially horizontal plane. By means of the pivotal movement of the conductor conveyor 30 the cable end of a transported cable, or any similar type of conductor, projecting beyond the conductor conveyor 30, can be transported to various processing stations that are preferably arranged along a circular arc. One of these processing stations in a cable-processing machine, into which a cable is to be drawn by means of the conductor conveyor 30, is typically a crimping station.

[0030] A first drive 36a is fixedly connected with the base frame G of the device, with which a precisely defined pivotal movement of the conductor conveyor 30 about a pivotal axis 31 can be effected. The energy for this pivotal movement is transmitted by means of a pivotal belt 34. This pivotal belt 34, preferably embodied as a toothed belt, runs over a drive shaft 37, which defines a drive axis 37a of the drive 36a for the conductor conveyor 30, which is preferably parallel to the pivotal axis 31 of the conductor conveyor 30 (see FIG. 4). If necessary, an arrangement can also be provided in which a drive axis for the conductor conveyor 30 coincides with its pivotal axis 31.

[0031] Conveyance of the cable takes place by means of at least one driven means of conveyance 30a, seated on the conductor conveyor 30, in particular a driven conveyor roller, or preferably a conveyor belt running around at least one drive roller 30b and one other roller 30c. The cable is advantageously clamped between the said means of conveyance 30a and an opposing means of pressure application 30d, also seated on the conductor conveyor 30, which means of pressure application 30d can, for example, be a pressure roller, or a pressure belt running around at least two rollers 30e, 30f. The means of conveyance 30a, or more particularly its drive roller 30b, are connected in terms of drive with a drive 36b, preferably fixedly connected with the base frame G. This drive can advantageously be performed via a flexible shaft coupling 35, in order to enable pitch movements of the conductor conveyor 30 out of the essentially horizontal plane of the pivotal movement about the axis 31. The means of pressure application 30d is preferably mounted on the conductor conveyor 30 such that it can be adjusted relative to the means of conveyance 30a, and can also, if necessary, be subjected to a spring force onto the means of conveyance 30a by means of an elastic arrangement, such that in between it can accommodate cables with various diameters. The means of pressure application 30d could also itself be driven. The axes of rotation of all rollers 30b, c, e, f are preferably parallel to one another and preferably also run parallel to the pivotal axis 31 of the conductor conveyor 30. At the same time the said axes of rotation are preferably also parallel to the axis 37a of the drive for pivotal movement of the conductor conveyor 30 about the axis 31.

[0032] The shaft coupling 35 is connected to the underside of the driven roller 30b, so that the drive axis 33 of the means of conveyance 30a not only lies parallel to the axis of the said roller 30b, but in fact is preferably coincident with itand also preferably coincides with the pivotal axis 31 of the conductor conveyor 30. With this arrangement no transmission unit is any longer required between the drive 36b for the means of conveyance 30a, and the conductor conveyor 30.

[0033] At the same time an arrangement of one of the rollers 30b, c, e, f, preferably once again the driven roller 30b, coincident with the pivotal axis 31 for the conductor conveyor 30, is particularly advantageous. The actuation paths of the pivotal axis 31 and the conveyor roller or the driven roller 30b are, however, spaced apart, so that simple independent control of the drives 36a, b is possible, and thereby a simple independent movement of the means of conveyance 30a for purposes of transporting the cable in its longitudinal direction, and of the conductor conveyor 30 for purposes of its pivotal movement.

[0034] In the form of embodiment of an inventive conductor transportation device represented in the figures the two structural axes 31 of the pivotal movement of the conductor conveyor 30, that is to say, the pivotal axis 31, and the drive axis 33 of the conductor conveyor, that is to say, the driven axis 33 of the driven roller 30b, are merged into one structural axis 31, 33. The drive 36b for the belt conveyor roller 30b is mounted fixed to the base frame G, and the drive 36a for the pivotal function of the conductor conveyor 30 is similarly mounted fixed to the frame, and in the example of embodiment represented it is spaced apart on the frame G from the drive 36b. If necessary the drives 36a, b can be combined in one module, but with separate drive shafts. Furthermore, the pivotal axis 31 is also identical with the central axis 33 of the driven belt conveyor roller 30b.

[0035] It should be noted that as a result of the inventive unification of the pivotal axis and the belt conveyor axis, the conductor conveyor 30 pivots about an axis of rotation 31 outside the conductor axis and the conductor guide 32. This leads to an unfavourable alteration of the pivotal behaviour, as result of which the pivotal movement is conducive to the formation of a loop; however, by an informed choice of the diameter of the means of belt conveyance 30a, together with the angle at which the conductor guide 32 stands relative to the conductor axis, this can be limited to an acceptable amount. The pivotal axis of the conductor conveyor 30 is, as stated above, coincident with the central axis of the driven roller 30b of the means of conveyance 30a.

[0036] During the pivotal movement of the conductor conveyor 30 the entry point of the conductor guide 32 describes a circular arc about the pivotal axis 31. As dictated by this circular arc, during the pivotal movement the conductor guide entry point travels up to approx. 30 firstly along a short path length in the direction of the conductor guide 32, coming from the left in FIGS. 1 to 3. It would therefore form a small conductor loop ahead of the conductor entry point into the conductor guide 32. At the same time the conductor guide is displaced approximately parallel laterally by 30 relative to the 0 guide position along a corresponding path length. The distance to the upstream conductor guide units, e.g. to the straightening unit, should therefore be relatively large, in order to ensure an approximate parallelism. In the range of between 30 and 60 pivotal movement, the conductor guide entry point travels back in the direction of the pivotal axis 31. As a result of this effect the conductor loop previously present would therefore be smoothed out, and in addition more conductor would be drawn out from the supply on the left-hand side. If there is now a pivotal movement back to 0, this conductor loop remains ahead of the conductor guide 32.

[0037] During the conveyancing process, such conductor loops must firstly be smoothed out with a moderate acceleration. Jerky acceleration could possibly damage or overstretch the conductor. Cutting the conductor to length, and conveyancing of the conductor, takes place in the 0 pivotal position. The aim of the design is therefore to achieve as small a loop formation as possible for the 0 pivotal position. It should be noted in particular that after severance, and during the removal of insulation, the conductor is conveyed backwards by approx. 25 mm, so that a conductor loop is already created in this process between the conductor guide entry point and the straightening unit. The conductor loop length additionally created as a result of the pivotal movement process in the present invention is theoretically shorter than the conductor loop generated during the process of severance and insulation removal, so that the pivotal process does not have a negative influence on loop formation.

[0038] As described above the conductor conveyor 30 can not only be pivoted about the axis 31 in the essentially horizontal plane. A pivotal movement about the pitch axis 38 out of this horizontal pivotal plane is also possible; this is preferably performed by a further drive. Restoration into the horizontal or any other plane perpendicular to the axis 31 is preferably effected by means of a spring element 39.

[0039] The inventive cable transportation device is typically deployed in conjunction with a cable-processing machine with at least two processing stations for at least one end of a cable. In this case the cable is conveyed in its longitudinal direction and is transported between the processing stations, normally distributed along a circular segment. One of these processing stations is a crimping station in which, for purposes of attaching a crimping component, the cable end is conveyed not only axially but also into the crimping station, in particular it must be lowered into a crimping bottom die arranged in the latter. For this configuration it is advantageously possible for the drive for lowering the end of the conductor conveyor 30 distant from the pitch axis 38onto the crimping bottom die arranged in the crimping stationto be formed by means of the press slide present in the crimping station and a ram attached to the press slide. The said ram acts on the conductor conveyor 30 during the downward movement of the press slide at the start of the crimping process, and presses the end of the conductor conveyor 30 that is remote from the pitch axis 38 downwards against the action of the spring element 39. When the crimping tool opens, i.e. when the press slide is raised, the ram also lifts and the spring element 39 can pivot the conductor conveyor 30 back into the plane located essentially perpendicular to the axis 31.

LIST OF REFERENCE SYMBOLS

[0040] 30 Conductor conveyor

[0041] 30a Means of conveyance

[0042] 30b Driven roller for the means of conveyance

[0043] 30c Roller for the means of conveyance

[0044] 30d Means of pressure application

[0045] 30e, f Rollers for the means of pressure application

[0046] 31 Pivotal axis

[0047] 32 Conductor guide

[0048] 33 Axis of the driven roller

[0049] 34 Pivotal belt

[0050] 35 Flexible shaft coupling

[0051] 36a Drive motor for conductor conveyor

[0052] 36b Drive motor for belt conveyor roller

[0053] 37 Drive shaft for conductor conveyor

[0054] 37a Axis of the drive for the conductor conveyor

[0055] 38 Pitch axis

[0056] 39 Spring element

[0057] G Base frame of the conductor transportation device