DEVICE FOR FEEDING ELECTRIC WIRES

Abstract

A wire feeding device (1) according to the present embodiment comprises: a pair of group drive rollers (20) arranged such that they collectively enclose a plurality of electrical wires (10) arranged in a first direction, and configured to feed the plurality of electrical wires (10) collectively in a second direction intersecting the first direction; and a pair of individual drive rollers (30) arranged such that they enclose some of the electrical wires (10) arranged in the first direction, and configured to feed some of the electrical wires (10) in the second direction, wherein the group drive rollers (20) and the individual drive rollers (30) are each driven individually.

Description

[0001] The present disclosure relates to a device for feeding electrical wires or a wire feeding device.

[0002] In some cases, an electrical wiring harness is used for the electrical wiring in electronic devices and the like. In this description, the term "wiring harness" refers to a harness in which multi-core connectors are attached to the ends of a bundle of electrical wires. Additionally, in some cases, a "multi-core wiring harness" is used (see Fig. 7) used where the length of electrical wires differs between several groups of electrical wires in cable harnesses.

[0003] When manufacturing a multi-wire harness, the length of electrical wires in each group must be precisely measured, and the electrical wires must be fed into the harness. Wire feeding devices for supplying electrical wires are disclosed in patent documents 1 to 6. List of state-of-the-art patent literature Patent document 1: JP10-154423 Patent document 2: JP10-212068 Patent document 3: JP10-241822 Patent Document 4: JP2001-35281 Patent document 5: JP60-27310 Patent Document 6: JP2015-225692

[0004] In the exemplary wire feeding device described in patent document 1, pressure rollers and measuring rollers are arranged above and below electrical wires on a one-to-one basis. The number of revolutions of each measuring roller is detected by a rotary encoder, and the actual feed length of each electrical wire is calculated based on the number of revolutions. A pulse signal of the detected value is then sent to a comparator unit in a controller. The comparator unit compares the actual feed length calculated by the encoder with a predetermined feed length of feed rollers, which was previously instructed to the comparator unit, and, if there is a difference between them, issues a command to a servo amplifier. The servo amplifier then instructs a servo motor to drive the feed rollers in such a way that switching between forward and reverse rotation occurs depending on the difference.

[0005] However, in the wire feeding device described in patent document 1, the pressure rollers and the measuring rollers are arranged on a one-to-one basis above and below electrical wires, the feeding length of each electrical wire is measured and specified individually, and thus the complicated processing steps cause a higher time expenditure for the production of a multi-cable harness.

[0006] Furthermore, the rollers that are in contact with the electrical wires on one side are the motor-driven rollers (feed rollers), and the rollers on the other side are the pressure rollers in the wire feeding device described in patent document 1. That is, the motor-driven rollers are only provided on one side of the electrical wires. Length measurement in such a device is performed only by means of the rollers on one side, which reduces the accuracy of the electrical wire measurement. In general, wire feeding devices in which motor-driven rollers are provided only on one side of the electrical wires, as described in patent documents 2 to 5, are frequently used.

[0007] Patent document 6 discloses that wire feeding units arranged on both sides of the electrical wires are motor-driven. However, the wire feeding device described in patent document 6 only feeds a few selected electrical wires and measures their length, which is intended for processing a single electrical wire. That is to say, the wire feeding device described in patent document 6 is not suitable for processing a plurality of electrical wires.

[0008] The main objective of the present disclosure, taking into account the problems described, is to provide a wire feeding device for electrical wires that is able to reduce the time required to feed electrical wires while simultaneously increasing the accuracy in length measurement.

[0009] A wire feeding device according to the present disclosure comprises a pair of group drive rollers arranged such that they collectively enclose a plurality of electrical wires arranged in a first direction and are configured to feed the electrical wires collectively in a second direction intersecting the first direction, as well as a pair of individual drive rollers arranged such that they enclose some of the electrical wires arranged in the first direction and are configured to feed some of the electrical wires in the second direction, wherein the group drive rollers and the individual drive rollers are each driven by their own drive and individually, respectively.

[0010] The wire feeding device according to the present disclosure can reduce the time required to feed electrical wires while simultaneously increasing the accuracy of length measurement. In particular, the wire feeding device according to the present disclosure can feed electrical wires collectively by means of the group drive rollers and feed some of the electrical wires by means of the individual drive rollers, thereby reducing the feeding time due to the group feeding of the electrical wires. Furthermore, the group drive rollers and the individual drive rollers are driven by their own drive, which allows the lengths of the electrical wires to be measured with higher accuracy than when measuring the lengths of electrical wires by means of individual roller drives. Brief description of the drawings

[0011] The drawings show: Fig. 1 an isometric view representing a wire feed device according to the present disclosure; Fig. 2 an isometric view showing essential components of the wire feed device according to the present disclosure; Fig. 3 a side view showing the wire feed device according to the present disclosure; Fig. 4 an explanatory illustration to explain a state in which wires are fed to the wire feeding device according to the present disclosure by means of group drive rollers; Fig. 5 an explanatory illustration to explain a condition in which wires are fed to the wire feeding device according to the present disclosure by means of individual drive rollers. Fig. 6A an explanatory illustration to explain a condition in which wires are fed using the wire feeding device according to the present disclosure; Fig. 6B an explanatory illustration to clarify a condition in which wires are fed using the wire feeding device according to the present disclosure; Fig. 6C an explanatory illustration to clarify a condition in which wires are fed using the wire feeding device according to the present disclosure; and Fig. 7 A top view showing a multi-cable harness.

[0012] Embodiments for carrying out the present disclosure are described below with reference to the drawings. A wire feeding device for electrical wires described below is directed towards implementing the technical concept of the present disclosure, and the present disclosure is not limited to the following unless otherwise stated.

[0013] The term "planar view" used in this description refers to viewing an object (such as a wire feeder) directly from above in the vertical direction and has the same meaning as "top view". For example, "planar view" refers to a state in which the object is in Fig. 1 along the negative “Z-direction”. The expression “in side view” used in this description refers to a state in which the object is viewed from its side in a direction perpendicular to the height direction and, unless otherwise specified, has the same meaning as side view. For example, the expression “in side view” refers to a state in which the object is viewed in Fig. 1 along the positive (or negative) “X-direction”. The expression “front view” mentioned in this description refers to a state in which the object is viewed from its front in a direction perpendicular to the height direction and, unless otherwise specified, has the same meaning as front view. For example, “front view” refers to a state in which the object is viewed in Fig. 1. The direction is considered along the negative direction, the "Y-direction." Furthermore, the "positive direction" is to be understood as the arrow direction in the X-direction, Y-direction, and Z-direction in the drawings, and the "negative direction" is to be understood as the direction opposite to the arrow directions in the X-direction, Y-direction, and Z-direction in the drawings. Additionally, the X-direction, Y-direction, and Z-direction are orthogonal to each other.

[0014] The terms that describe relationships between components (such as “parallel”, “orthogonal”, etc.) and the terms that denote the shapes of the components in the present description are not only to be understood in a literal and strict sense, but also in essentially equivalent ranges, such as ranges with differences of about a few percent. < Description of the wire feed device >

[0015] A wire feeding device 1 according to an embodiment of the present disclosure is described with reference to the Fig. Sections 1 to 6 are described in detail. The wire feed device 1 serves to feed a plurality of electrical wires 10, arranged in one direction, in another direction that intersects this direction. In the present description, as in the Fig. Figures 1 to 6 are shown as examples, the direction in which the electrical wires 10 are arranged is assumed to be the “positive X direction (or latitude direction)”, the direction in which the electrical wires 10 are supplied is assumed to be the “positive Y direction (or wire supply direction)”, and the height direction orthogonal to the positive X direction and to the positive Y direction is assumed to be the “positive Z direction (or height direction)”.

[0016] Additionally, according to the present embodiment, a form is described in which six electrical wires 10 are arranged in the positive X-direction, as shown in the Fig. Figures 6A to 6C are shown as examples. Furthermore, each of the six electrical wires 10 can be wound on a coil (not shown) upstream of the feed direction (in the direction of the negative Y direction) of the wire feed device 1. That is, as many coils as there are electrical wires 10 to be fed can be provided upstream of the wire feed device 1. The number of electrical wires 10 is not limited to six. < Wire feeder configuration >

[0017] The wire feed device 1 primarily comprises a pair of group drive rollers 20 and a pair of individual drive rollers 30 (see Fig. 2).

[0018] In a more preferred embodiment, the wire feed device 1 comprises drive sources 40 (a first drive motor 41 and a second drive motor 42) for driving the group drive rollers 20 and the individual drive rollers 30, an encoder (not shown) for recording the number of revolutions of each of the group drive rollers 20 and / or the individual drive rollers 30, a vertical direction movement mechanism 50 for moving the group drive rollers 20 and / or the individual drive rollers 30 in the two vertical directions, and a horizontal direction movement mechanism 60 for moving at least the group drive rollers 20 in the two horizontal directions (the positive and negative X directions in the drawings). The respective components are described in detail below. Group drive rollers

[0019] The group drive rollers 20 are arranged such that they collectively close the electrical wires 10 arranged in one direction between them. Thus, the width W1 (see Fig. 2) Each of the group drive rollers 20 in the positive X direction must be large enough to cover all electrical wires 10 in the top view. The pair of group drive rollers 20 is designed such that it is each individually driven by the drive sources 40. The term "individually driven" in this description means that the group drive rollers 20 are rotatably driven externally by means of the drive sources 40.

[0020] In the illustrated exemplary embodiment, the group drive rollers 20 can have a first group drive roller 21, which is arranged in the negative Z direction, and a second group drive roller 22, which is arranged in the positive Z direction with respect to the electrical wires 10 (see in particular Fig. 3) The first group drive roller 21 can be arranged on the same side as a first single drive roller 31 described below with respect to the electrical wires 10, and the second group drive roller 22 can be arranged on the same side as a second single drive roller 32 described below with respect to the electrical wires 10.

[0021] The first group drive roller 21 can be driven by a drive source 40 (the first drive motor 41 (see Fig. 2)) in Fig. 3 can be rotated counterclockwise. Furthermore, the second group drive roller 22 can be driven via a drive source 40 (the second drive motor 42 (see Fig. 2)) in Fig. 3 are rotated clockwise. The first group drive roller 21 and the second group drive roller 22 are rotated in this way such that the electrical wires 10, which are in contact with the group drive rollers 20, are in Fig. 3 can be supplied in the positive Y direction.

[0022] The first group drive roller 21 and the second group drive roller 22 can have the same width. More specifically, the first group drive roller 21 and the second group drive roller 22 can be the ones in Fig. 2. The width W1 shown. Additionally, the width of the first group drive roller 21 and the second group drive roller 22 can each correspond to the width of the first individual drive roller 31, which is described below. Single drive rollers

[0023] The individual drive rollers 30 are arranged such that they close some of the electrical wires 10 arranged in one direction between them. The pair of individual drive rollers 30 is designed such that it is each driven individually by the drive sources 40.

[0024] In the illustrated exemplary embodiment, the individual drive rollers 30 can comprise the first individual drive roller 31, which is arranged in the negative Z-direction with respect to the electrical wires 10, and the second individual drive roller 32, which is arranged in the positive Z-direction with respect to the electrical wires 10 (see in particular Fig. 3).

[0025] In the illustrated exemplary embodiment, the width W1 of the first single drive roller 31 in the positive X direction can be large enough to cover all electrical wires 10 in the top view (see Fig. 2) That is, the first single drive roller 31 can be as large as the first group drive roller 21 or the second group drive roller 22.

[0026] In the illustrated exemplary embodiment, the width W2 of the second single drive roller 32 in the positive X direction in the top view can be smaller than the width W1 of the first single drive roller 31 in the positive X direction (see Fig. 2) Thus, the individual drive rollers 30 are designed to sandwich some of the electrical wires 10 between them.

[0027] Assuming a distance P between electrical wires 10 arranged in one direction (see Fig. 6A to 6C), the lower limit of the width W2 of the second single drive roller 32 can preferably be twice the distance P. When the width W2 of the second single drive roller 32 is defined in this way, the height-direction movement mechanism 50 described below is actuated or moved to bring the first single drive roller 31 into contact with an electrical wire 10. In a further preferred embodiment, the first single drive roller 31 can be brought into contact with two electrical wires 10.

[0028] Furthermore, the upper limit of the width W2 of the second individual drive roller 32 can preferably be smaller than the width W1 of each of the group drive rollers 20. When the width W2 of the second individual drive roller 32 is specified in this way, the height direction movement mechanism 50 described below is moved in order to bring the second individual drive roller 32 into contact with at least two electrical wires 10.

[0029] The first single drive roller 31 can be driven by a drive source 40 (the first drive motor 41 (see Fig. 2)) in Fig. 3 can be rotated counterclockwise. Furthermore, the second single drive roller 32 can be driven via a drive source 40 (the second drive motor 42 (see Fig. 2)) in Fig. 3 are rotated clockwise. The first single drive roller 31 and the second single drive roller 32 are rotated in this way so that the electrical wires 10, which are in contact with the single drive rollers 30, can be fed in the positive Y direction. sources of power

[0030] In the illustrated exemplary embodiment, the drive sources 40 can comprise the first drive motor 41 and the second drive motor 42 (see Fig. 2).

[0031] The first drive motor 41 can cause both the first individual drive roller 31 and the first group drive roller 21 to be driven individually at the same time. More specifically, a first transmission belt or drive belt B1 (see Fig. 2) designed for the synchronous rotation of the first single drive roller 31 and the first group drive roller 21, and both the first single drive roller 31 and the first group drive roller 21 can be rotated synchronously via the first transmission belt B1. Thus, the rotational speed of the first single drive roller 31 can be equal to the rotational speed of the first group drive roller 21.

[0032] The second drive motor 42 can cause both the second individual drive roller 32 and the second group drive roller 22 to be driven individually at the same time. More specifically, a second transmission belt B2 (see Fig. 2) is provided for the synchronous rotation of the second single drive pulley 32 and the second group drive pulley 22, and both the second single drive pulley 32 and the second group drive pulley 22 can be rotated synchronously via the second transmission belt B2. Thus, the speed of the second single drive pulley 32 can be equal to the speed of the second group drive pulley 22.

[0033] The configuration in which the first individual drive roller 31 and the first group drive roller 21 are individually driven by the first drive motor 41, and the second individual drive roller 32 and the second group drive roller 22 are individually driven by the second drive motor 42, has been described according to the present embodiment, but is not limited to this embodiment. For example, the first individual drive roller 31 and the second individual drive roller 32 can be individually driven by the first drive motor 41, and the first group drive roller 21 and the second group drive roller 22 can be individually driven by the second drive motor 42.Furthermore, four drive motors can be provided to drive the first single drive roller 31, the second single drive roller 32, the first group drive roller 21 and the second group drive roller 22 independently of each other, or a single drive motor can be provided for the rollers.

[0034] An encoder (not shown) is provided for the first drive motor 41 and the second drive motor 42. The encoder can detect the number of revolutions of at least the first drive motor 41 and the second drive motor 42. The encoder detects the number of revolutions of the first drive motor 41 and the second drive motor 42 in order to determine the feed length of the electrical wires 10, which are to be fed in the positive Y direction.

[0035] The rotational speed of the first single drive roller 31 and the first group drive roller 21 is equal to the rotational speed of the second single drive roller 32 and the second group drive roller 22, and the outer diameters of the rollers are essentially the same. Therefore, the feed length of the electrical wires 10 to be fed in the positive Y direction can be easily determined based on the recorded rotational speeds of the rollers. Altitude direction movement mechanism

[0036] In the illustrated exemplary embodiment, the height direction movement mechanism 50 can have a first sliding element S1 and a second sliding element S2, which are sliding or displaceable in both height directions (the positive and negative Z-direction), as well as a Z-direction linear guide LGz for guiding the height direction sliding process of the first sliding element S1 and the second sliding element S2 (see in particular Fig. 3 to 5). The first sliding element S1 and the second sliding element S2 in the height direction movement mechanism 50 perform a sliding movement in order to move the second group drive roller 22 and the second single drive roller 32 towards or away from the electrical wires 10.

[0037] A form in which the second group drive roller 22 and the second single drive roller 32 are moved towards or away from the electrical wires 10 by the height direction movement mechanism 50 is described with reference to the present embodiment, but is not limited to, wherein the first group drive roller 21 and the first single drive roller 31 can be moved towards or away from the electrical wires 10 by the height direction movement mechanism 50.

[0038] The first sliding element S1 can be positioned on the same side as the group drive rollers 20 in the side view (closer to the negative Y direction than the second sliding element S2). The first sliding element S1 slides in both vertical directions along the Z-direction linear guide LGz, thereby moving the second single drive roller 32 and the second group drive roller 22 towards or away from the electrical wires 10.

[0039] The second sliding element S2 can be positioned in the side view between the group drive rollers 20 and the individual drive rollers 30. The second sliding element S2 slides in both vertical directions along the Z-direction linear guide LGz, thereby rotating the second individual drive roller 32 relative to the drive shaft AX, so that the second group drive roller 22 is driven individually.

[0040] Thus, in the present embodiment, the first sliding element S1 and the second sliding element S2 slide in the vertical movement mechanism 50 in both vertical directions to bring the second group drive roller 22 into contact with the electrical wires 10 and to move the second single drive roller 32 away from the electrical wires 10, as shown in Fig. 4 shown, and to bring the second single drive roller 32 into contact with some of the electrical wires 10 and to move the second group drive roller 22 away from the electrical wires 10, as shown in Fig. 5 shown.

[0041] Furthermore, in the present embodiment, even when the first sliding element S1 and the second sliding element S2 are moved, the distance D (see Fig. 3) The speed between the rotating shaft of the second single drive roller 32 and the rotating shaft of the second group drive roller 22 is kept constant by the second transmission belt B2. Thus, the second single drive roller 32 and the second group drive roller 22 can be rotated synchronously in a suitable manner using the second transmission belt B2. Laterality movement mechanism

[0042] In the illustrated exemplary embodiment, the width-direction movement mechanism 60 can have a third sliding element S3 that slides in both width directions (the positive and the negative X-direction) and an X-direction linear guide LGx for guiding the width-direction displacement of the third sliding element S3 (see in particular Fig. 2).

[0043] The third sliding element S3 can move at least the second individual drive roller 32 in both lateral directions (the positive and negative X-directions in the drawings). In the illustrated exemplary embodiment, the second group drive roller 22 can also be driven in both lateral directions in addition to the second individual drive rollers 32. Furthermore, both the second drive motor 42 and the height-direction movement mechanism 50, in conjunction with the second individual drive roller 32 and the second group drive roller 22, can be moved collectively in both lateral directions. The third sliding element S3 can be displaced in both lateral directions along the X-direction linear guide LGx.

[0044] In the present embodiment, the third sliding element S3 is displaced in both width directions in order to bring the second single drive roller 32 into contact with some of the electrical wires 10. <Funktionsweise der Drahtzuführvorrichtung>

[0045] The operation of the wire feed device according to the present embodiment will be described below primarily with reference to the Fig. 6A to 6C described, with reference to the following where necessary: Fig. Reference is made to 1 to 5.

[0046] First, several coils (not shown), on which the electrical wires 10 are wound, are placed in the negative Y direction (the wire feed direction) in the Fig. 1 wire feed device provided.

[0047] Next, the height direction movement mechanism 50 is actuated to bring the second group drive roller 22 into contact with the electrical wires 10, without bringing the second single drive roller 32 into contact with the electrical wires 10, as shown in Fig. Figure 4 shows the first drive motor 41 and the second drive motor 42 are then put into operation to drive the first group drive roller 21 and the second group drive roller 22 individually, thereby supplying the electrical wires 10 collectively in the positive Y direction.

[0048] The wire feed device 1 according to the present embodiment can feed the electrical wires 10 collectively in this way, thereby reducing the time for feeding the electrical wires 10 more than if the electrical wires 10 were fed individually.

[0049] The number of revolutions of the first drive motor 41 and the second drive motor 42 is recorded by the encoder (not shown). The feed length of the electrical wires 10 is calculated based on the number of revolutions of the first drive motor 41 and the second drive motor 42 recorded by the encoder.

[0050] In this case, both the first group drive roller 21 and the second group drive roller 22 in the wire feed device 1 are driven individually according to the present embodiment. Thus, the lengths of electrical wires can be measured with higher accuracy than with a conventional device where the lengths of electrical wires are measured by individual roller drives. For example, when measuring an electrical wire with a conventional individual roller drive, a dimensional deviation of about 2 to 3 mm per meter occurs; however, the dimensional deviation can be reduced to 0.5 mm or less per meter by driving both the first group drive roller 21 and the second group drive roller 22 individually. After the electrical wires 10 have been collectively fed to a desired feed length (see Fig. 6A), the rotation of the first drive motor 41 and the second drive motor 42 is stopped. Then the height direction movement mechanism 50 is activated to move the second group drive pulley 22 away from the electrical wires 10.

[0051] Next, the lateral direction movement mechanism 60 is actuated to engage the second single drive roller 32 at the Fig. to arrange in the position shown in 6B. Subsequently, the height direction movement mechanism 50 is actuated to bring the second single drive roller 32 into contact with some of the electrical wires 10 without bringing the second group drive roller 22 into contact with the electrical wires 10, as shown in Fig. Figure 5 illustrates this. The first drive motor 41 and the second drive motor 42 are then activated to individually drive the first single drive roller 31 and the second single drive roller 32, thereby supplying the electrical wires 10 to the second single drive roller 32 in the positive Y direction. The number of revolutions of the first drive motor 41 and the second drive motor 42 is recorded by the encoder, and the supply length of the electrical wires 10 is calculated based on the number of revolutions.

[0052] After the electrical wires 10, which are in contact with the second single drive roller 32, have been fed to a desired feed length (see Fig. 6B), the rotation of the first drive motor 41 and the second drive motor 42 is stopped. Subsequently, the height direction movement mechanism 50 is actuated to move the second single drive pulley 32 away from the electrical wires 10.

[0053] Next, the lateral direction movement mechanism 60 is actuated to engage the second single drive roller 32 at the Fig. to arrange in the position shown in Figure 6C. Subsequently, the height direction movement mechanism 50 is actuated to bring the second single drive roller 32 into contact with some of the electrical wires 10 without bringing the second group drive roller 22 into contact with the electrical wires 10, as shown in Figure 6C. Fig. Figure 5 illustrates this process. The first drive motor 41 and the second drive motor 42 are then activated to individually drive the first single drive roller 31 and the second single drive roller 32, thereby supplying the electrical wires 10 to the second single drive roller 32 in the positive Y direction. The number of revolutions of the first drive motor 41 and the second drive motor 42 is recorded by the encoder, and the supply length of the electrical wires 10 is calculated based on the number of revolutions.

[0054] After the electrical wires 10 in contact with the second single drive roller 32 have been fed to a desired feed length (see Fig. 6C), the rotation of the first drive motor 41 and the second drive motor 42 is stopped. Subsequently, the height direction movement mechanism 50 is actuated to move the second single drive pulley 32 away from the electrical wires 10.

[0055] After the electrical wires 10 have been fed to the desired lengths, connectors C are attached to both ends of each electrical wire 10 (see Fig. 7) This allows a multi-cable harness to be produced in which the electrical wires 10 have a different length for each harness.

[0056] As described above, in the wire feeding device 1 according to the present embodiment, the electrical wires 10 can be fed collectively by the group drive rollers 20, and some of the electrical wires 10 can be fed by the individual drive rollers 30, thereby reducing the feeding time due to the group feeding of the electrical wires. Furthermore, the group drive rollers 20 and the individual drive rollers 30 are driven individually by the drive sources 40, enabling the electrical wires to be measured with higher accuracy than with individual roller drives.

[0057] The disclosed embodiment is in all respects merely exemplary and is not intended to limit the interpretation. Therefore, the technical scope of this disclosure is not to be interpreted solely on the basis of the foregoing embodiment, but is to be defined by the description of the claims. Furthermore, the technical scope of this disclosure includes the meanings corresponding to the claims as well as any modifications within the claims.

[0058] A wire feeding device according to the present disclosure has the aspects listed below in the following numbered paragraphs. <1> A wire feeder comprising the following: a pair of group drive rollers arranged such that they collectively enclose a plurality of electrical wires arranged in a first direction, and configured to feed the plurality of electrical wires collectively in a second direction intersecting the first direction; and a pair of single drive rollers arranged such that they enclose some of the majority of the electrical wires arranged in the first direction, and configured to feed some of the majority of electrical wires in the second direction, where the group drive rollers and the individual drive rollers are each driven individually. <2> The wire feed device according to paragraph <1> , the individual drive rollers feature: a first single drive roller that comes into collective contact with the majority of electrical wires arranged in the first direction; and a second single drive roller that comes into contact with some of the majority of the electrical wires arranged in the first direction. <3> The wire feed device according to paragraph <2> , where the second single drive roller moves in the first direction. <4> The wire feed device according to paragraph <2> or <3> , where, assuming a distance P between the electrical wires arranged in the first direction, a lower limit of the width of each of the individual drive rollers is twice the distance P. <5> The wire feed device according to one of the paragraphs <2> until <4> , where the upper limit of the width of each of the individual drive rollers is smaller than the width of each of the group drive rollers. <6> The wire feed device according to one of the paragraphs <2> until <5> , the group drive rollers have: a first group drive pulley, which is arranged on the same side as the first single drive pulley with respect to the electrical wires; and a second group drive roller, which is located on the opposite side from the first group drive roller with respect to the electrical wires. <7> The wire feed device according to paragraph <6> , wherein the first group drive roller, the second group drive roller and the first single drive roller have the same width. <8> The wire feed device according to paragraph <6> or <7> , wherein the first group drive roller and the first individual drive roller or Move the second group drive pulley and the second single drive pulley towards or away from the electrical wires. <9> The wire feed device according to one of the aspects <6> until <8> , which exhibits the following: a first drive source designed to simultaneously and individually drive the first group drive roller and the first individual drive roller; and a second drive source designed to drive the second group drive roller and the second individual drive roller simultaneously and individually. <10> The wire feed device according to one of the aspects <6> until <9> , wherein the second single drive pulley rotates relative to a drive shaft of the second group drive pulley in order to move towards or away from the electrical wires. Industrial applicability

[0059] A wire feeding device according to the present disclosure can be used in a suitable manner as a device for reducing the time required to feed electrical wires while simultaneously increasing the accuracy in length measurement. Reference symbol list 1 Wire feed device 10 electrical wire 20-group drive roller 21 first group drive roller 22 second group drive roller 30 single drive rollers 31 first single drive roller 32 second single drive roller 40 Drive source 41 first drive motor 42 second drive motor B1 first transmission belt B2 second transmission belt LGx X-direction linear guide LGz Z-direction linear guide 50 Height direction movement mechanism S1 first sliding element S2 second sliding element 60 Lateral direction movement mechanism S3 third sliding element AX drive shaft W1, W2 width C connector QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] JP 10-154423

[0003] JP 10-212068

[0003] JP 10-241822

[0003] JP 2001-35281

[0003] JP 60-27310

[0003] JP 2015-225692

[0003]

Claims

[1] Wire feed device comprising: a pair of group drive rollers arranged such that they collectively enclose a plurality of electrical wires arranged in a first direction, and configured to feed the plurality of electrical wires collectively in a second direction intersecting the first direction; and a pair of single drive rollers arranged such that they enclose some of the majority of electrical wires arranged in the first direction, and configured to feed some of the majority of electrical wires in the second direction, where the group drive rollers and the individual drive rollers are each driven individually. [2] Wire feed device according to claim 1, wherein the individual drive rollers have: a first single drive roller that comes into collective contact with the majority of electrical wires arranged in the first direction; and a second single drive roller that comes into contact with some of the majority of the electrical wires arranged in the first direction. [3] Wire feed device according to claim 2, wherein the second single drive roller moves in the first direction. [4] Wire feed device according to claim 2 or 3, wherein, assuming a distance P between the electrical wires arranged in the first direction, a lower limit of the width of each of the individual drive rollers is twice the distance P. [5] Wire feed device according to claim 4, wherein an upper limit of the width of each of the individual drive rollers is smaller than a width of each of the group drive rollers. [6] Wire feed device according to any one of claims 2 to 5, wherein the group drive rollers comprise: a first group drive pulley, which is arranged on the same side as the first single drive pulley with respect to the electrical wires; and a second group drive roller, which is located on the opposite side from the first group drive roller with respect to the electrical wires. [7] Wire feed device according to claim 6, wherein the first group drive roller, the second group drive roller and the first single drive roller have the same width. [8] Wire feed device according to claim 6 or 7, wherein the first group drive roller and the first single drive roller or the second group drive roller and the second single drive roller move towards or away from the electrical wires. [9] Wire feed device according to any one of claims 6 to 8, comprising the following: a first drive source designed to simultaneously and individually drive the first group drive roller and the first individual drive roller; and a second drive source designed to drive the second group drive roller and the second individual drive roller simultaneously and individually. [10] Wire feed device according to one of claims 6 to 9, wherein the second single drive roller rotates in relation to a drive shaft of the second group drive roller in order to move towards or away from the electrical wires.

Images