JP5875112B2 - Twisted wire manufacturing apparatus and manufacturing method - Google Patents

Description

  The present invention relates to a manufacturing apparatus and a manufacturing method for a stranded wire formed by twisting electric wires, for example, and more particularly to a manufacturing apparatus and a manufacturing method for manufacturing a stranded wire by twisting an electric wire.

  For electric wires mounted on vehicles such as automobiles, for example, so-called twisted wires called twisted wires or twisted pair wires are generally used. This stranded wire is usually manufactured by twisting together a plurality of electric wires. For example, as shown in FIG. 5, the stranded wire 101 is composed of two electric wires 102 and 103. In this case, with the one end portions 102a and 103a of the electric wires 102 and 103 fixed together, the other end portions 102b and 103b of the electric wires 102 and 103 are both rotated in the direction indicated by the white arrows in FIG. As a result, a twisted wire 101 is manufactured in which the pair of electric wires 102 and 103 are in close contact with each other and twisted. With this twisted structure, the twisted wire 101 can suppress the generation of its own electromagnetic wave or absorb the electromagnetic wave from the outside.

  Moreover, as a more specific twisted wire manufacturing apparatus and manufacturing method, for example, a twisted wire manufacturing apparatus 201 and a manufacturing method shown in FIGS. The apparatus 201 includes one end side rotating member 202, a pair of other end side rotating members 203, and a moving member 204 that moves from the one end side rotating member 202 side toward the other end side rotating member 203 side. . The one end side rotating member 202 holds the one end portions 205a of the two electric wires 205 together, and each end portion 205a is centered on the central axis L1 of each electric wire 205, and the arrow X1 in FIGS. Rotate them together in the direction indicated by. Here, the direction indicated by the arrow X1 is the one-end-side rotating member 202 when the one-end-side rotating member 202 is viewed from the other-end-side rotating member 203 side along the axial direction of the central axes L2, L3. Refers to the direction of rotating clockwise. In addition, the pair of other end-side rotating members 203 individually hold the other end 205b of each electric wire 205, and the other end 205b is illustrated with the center axes L2 and L3 inclined with respect to the center axis L1. 6 (a), (b) The individual rotations in the direction indicated by the arrow X2. Here, the direction indicated by the arrow X2 is the rotation at the other end when viewed from the one end side rotating member 202 toward the other end side rotating member 203 along the axial direction of the central axes L2 and L3. The direction in which the member 203 rotates counterclockwise is indicated. Thus, the one end side rotating member 202 and each other end side rotating member 203 rotate in opposite directions when viewed from the side of each electric wire 205 when viewed from the respective electric wire 205 side.

  6A and 6B, the moving member 204 is rotated from the one end side rotating member 202 side to the other end side rotating member as the one end side rotating member 202 rotates. It moves along the central axis L1 toward the 203 side. Thereby, the two electric wires 205 are twisted between the one end side rotation member 202 and the moving member 204, and the desired twisted wire 206 is manufactured. As an apparatus and a manufacturing method of a stranded wire using such a technique, for example, the invention disclosed in Patent Document 1 below can be cited.

JP 2009-231157 A

  However, in the method for manufacturing a stranded wire shown in FIG. 5, a frictional force is likely to be generated between the electric wires 102 and 103 when the electric wires 102 and 103 are brought into close contact with each other. When a frictional force is generated between the electric wires 102 and 103, the electric wires 102 and 103 are subjected to a force for extending them in the circumferential direction, and the electric wires 102 and 103 are twisted. The stress due to the twist is likely to remain in the electric wires 102 and 103 even after the electric wires 102 and 103 are twisted together. When the stress due to twisting remains in each of the electric wires 102 and 103, a repulsive force for eliminating the stress is stored in each of the electric wires 102 and 103. Then, due to the repulsive force, the electric wires 102 and 103 try to return to the state before being twisted. As a result, the stranded wire 101 may return to its untwisted state.

  Further, in the twisted wire manufacturing apparatus 201 and the manufacturing method shown in FIGS. 6A and 6B, if the rotational speed of each other-end-side rotating member 203 is too high, each other-end-side rotating member 203 and the moving member. An excessive centrifugal force will act on each electric wire 205 between 204. Then, the electric wires 205 are violated and the electric wires 205 are easily entangled with each other, making it difficult to properly twist the electric wires 205.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an apparatus and a method for manufacturing a twisted wire that is easy to twist and difficult to unwind.

In order to solve the problems and achieve the object, the twisted wire manufacturing apparatus according to claim 1 of the present application is independent of each other while individually holding one end of each of the plurality of electric wire portions. A plurality of first end holders that are freely rotatable, and the electric wire portions gripped by the first end holders by rotating the first end holders, respectively. a first rotation drive section for rotating separately about the, first the freely rotating independently of each wire unit is the first of each end retainer while gripping collectively the other end with each and second end retainer, and a second rotary drive unit for rotating collectively the respective wire portion which is gripped to the second end retainer the second end retainer rotate the, comprises a made, with the rotation of said second end retainer is stopped, the first of each end retainer Rotate torsion individually each wire portion around each of the axis, in a state where the rotation of the first respective end retainer stops, the said second end retainer each The electric wires are rotated in a direction to eliminate twisting of the electric wires, and the electric wires are twisted together.

  In the twisted wire manufacturing apparatus according to claim 1 having the above-described configuration, each wire portion is individually twisted around its axis, and the twist of each wire portion is eliminated. The electric wire portions are rotated together to twist the electric wire portions together. As a result, twisted wires are hardly produced in the twisted electric wire portions, and a twisted wire in which stress due to twisting hardly remains can be easily manufactured.

  A twisted wire manufacturing apparatus according to claim 2 of the present application is the twisted wire manufacturing apparatus according to claim 1 of the present application, wherein the plurality of electric wire portions are independent of each other. And at least one of the second electric wires which are substantially two or more of the electric wire portions by folding back at least one continuous electric wire at at least one of the longitudinal intermediate portions thereof. For each of the first electric wires, the one end and the other end are the one end and the other end in the longitudinal direction of the first electric wire, respectively. As for the second electric wire, each of the one end portions is a longitudinal end portion of the second electric wire and the other end portion is a folded back of the second electric wire. Also characterized by being part It is.

  According to the twisted wire manufacturing apparatus according to the second aspect of the present invention having such a configuration, the manufacture of the twisted wire is not easily restricted by the form and type of the electric wire as the material. Moreover, since a twisted wire can be manufactured using one electric wire, it is possible to reduce the manufacturing cost by eliminating waste of materials.

Furthermore, the manufacturing method of the twisted wire according to claim 3 of the present application individually grips one end portion of each of the plurality of electric wire portions, and collectively collects the other end portion of each of the electric wire portions. and while holding it, after Tsu twisted individually said one of said electric wires portions respectively rotate individually each end around respective axial stop the rotation of each end of the one and one in which collectively each end of the front SL other is rotated in a direction to eliminate the twisting of the electric wires portions, characterized in that twisting the electric wires portions with.

  In the method of manufacturing a stranded wire according to claim 3 having the above-described configuration, each wire portion is individually twisted around its axis, and the twist of each wire portion is eliminated. The electric wire portions are rotated together to twist the electric wire portions together. As a result, twisted wires are hardly produced in the twisted electric wire portions, and a twisted wire in which stress due to twisting hardly remains can be easily manufactured.

  As described above, according to the invention according to claim 1 of the present application, it is possible to easily produce a twisted wire in which twists are hardly generated in the twisted electric wire portions and stress due to twisting hardly remains. it can. Therefore, according to the invention which concerns on Claim 1 of this application, the manufacturing apparatus of the twisted wire which is easy to twist and it is hard to unwind can be provided.

  Further, according to the invention according to claim 2 of the present application, the production of the twisted wire is not easily restricted by the form and type of the electric wire as the material, and the production cost can be reduced by eliminating the waste of the material. Therefore, according to the invention according to claim 2 of the present application, the same effect as that of the invention according to claim 1 of the present application can be obtained, and it can be flexibly handled according to the form and type of the electric wire that can be procured and twisted at a low cost. The manufacturing apparatus of the twisted wire which can manufacture a mating wire can be provided.

  Furthermore, according to the invention of claim 3 of the present application, it is possible to easily manufacture a twisted wire in which the twisted electric wires are hardly twisted and the stress due to twisting hardly remains. Therefore, according to the invention which concerns on Claim 3 of this application, the manufacturing method of the twisted wire which is easy to twist and it is hard to unwind can be provided.

It is a perspective view which shows the manufacturing apparatus of the twisted wire which concerns on one Embodiment of this invention. It is a perspective view which expands and shows the principal part of the manufacturing apparatus of the twisted wire shown in FIG. (A), (b), (c), (d), and (e) show the manufacturing method of the twisted wire which concerns on one Example which uses the manufacturing apparatus of the twisted wire shown in FIG. 1, respectively in order of a process. It is a schematic diagram. (A), (b), (c), (d) is a schematic diagram which shows the modification of the manufacturing method of the twisted wire which concerns on one Example shown in FIG. 3 in order of a process, respectively. It is a schematic diagram which shows the outline of the manufacturing method of the twisted wire which concerns on the prior art. It is a schematic diagram which shows the outline of the manufacturing apparatus and manufacturing method of the twisted wire which concern on the prior art different from the manufacturing method of the twisted wire shown in FIG.

  Hereinafter, an apparatus and a method for manufacturing a twisted wire according to an embodiment of the present invention will be described with reference to FIGS. First, the configuration and function of the twisted wire manufacturing apparatus 1 will be described with reference to FIGS. 1 and 2.

[Configuration and function of twisted wire manufacturing equipment]
As shown in FIG. 1, a twisted wire manufacturing apparatus 1 according to the present embodiment is a device for manufacturing a twisted wire formed by twisting a plurality of electric wires 2. In the present embodiment, a twisted wire manufacturing apparatus 1 for manufacturing a twisted wire (twisted pair wire) formed by twisting two electric wires 2 will be described as an example. The manufacturing apparatus 1 mainly includes a work table 3, a first electric wire holding unit 4, a second electric wire holding unit 5, a driving mechanism 6, an operation unit 7, and the like.

  In the twisted wire manufacturing apparatus 1, two types of electric wires 2 can be used roughly. One is two or more first electric wires independent from each other. The other is a second electric wire in which at least one continuous electric wire is folded back at at least one location in the middle portion in the longitudinal direction to substantially form two or more electric wire portions. In this embodiment, the case where a 2nd electric wire is employ | adopted as the electric wire 2 is demonstrated.

  As shown in FIG. 1, the second electric wire 2 is folded back and attached to the device 1 at one place in the middle portion in the longitudinal direction. Specifically, the second electric wire 2 is attached to the device 1 by being divided into two regions between the folded portion 2A that is folded back and both end portions 2D and 2E in the longitudinal direction. Here, the area | region between one edge part 2D of the 2nd electric wire 2 and the folding | returning part 2A among these 2 area | regions is made into the 1st electric wire part 2B. Of these two regions, the region between the other end 2E of the second electric wire 2 and the folded portion 2A is defined as a second electric wire portion 2C. Therefore, the 2nd electric wire 2 which is one continuous electric wire is attached to the apparatus 1 as two electric wires comprised from the 1st and 2nd two electric wire parts 2B and 2C substantially.

  About the 1st electric wire part 2B, the one end part 2D of the electric wire 2 is hold | maintained at the 1st electric wire holding part 4 as one edge part of the 1st electric wire part 2B. At the same time, the folded portion 2A of the electric wire 2 is held by the second electric wire holding portion 5 as the other end portion of the first electric wire portion 2B. Similarly, for the second electric wire portion 2C, the other end portion 2E of the electric wire 2 is held by the first electric wire holding portion 4 as one end portion of the second electric wire portion 2C. At the same time, the folded portion 2A of the electric wire 2 is held by the second electric wire holding portion 5 as the other end portion of the second electric wire portion 2C.

  The one end portions 2D and 2E of the first and second electric wire portions 2B and 2C are independent of each other and are individually held by the first electric wire holding portion 4. On the other hand, the first and second electric wire portions 2B and 2C share the folded portion 2A of the electric wire 2 that is the other end portion. Therefore, the first electric wire portion 2B and the second electric wire portion 2C are held by the second electric wire holding portion 5 with their other end portions 2A substantially collectively. As described above, the two electric wires 2 substantially extend from the folded portion 2A held by the second electric wire holding portion 5 toward the one end portions 2D and 2E held by the first electric wire holding portion 4. The first and second electric wire portions 2B and 2C are configured.

  As shown in FIG. 1, the work table 3 is formed in an elongated shape that is extended along one direction in its general outline. The work table 3 is installed in a work place (not shown) with the longitudinal direction thereof being substantially horizontal. In addition, the work table 3 includes a table 31 for attaching the electric wire 2 to the device 1, a cover 32 that covers the first electric wire holding unit 4, and the like. An operator (not shown) performs work in the vicinity of one side portion of both sides in the width direction of the work table 3 orthogonal to the longitudinal direction of the work table 3, for example.

  The table 31 is formed in a long shape extending along the longitudinal direction of the work table 3, and is arranged at a height at which an operator can easily work. Further, the table 31 is formed in a concave groove shape as a whole, and is set so as to easily accept the electric wire 2 as a material or a material and a twisted wire as a product. Thus, the operator can easily perform the work of bending the electric wire 2 extended on the table 31 and holding it by the first and second electric wire holding portions 4 and 5.

  The cover 32 is provided at one end in the longitudinal direction of the table 31 and the work table 3 shown on the upper left side of FIG. The cover 32 is supported so as to be rotatable with respect to the table 31 along the direction indicated by the double arrow A in FIG. That is, the cover 32 is configured to open upward from a state of covering the first electric wire holding part 4 and to be opened and closed until the operator can operate the first electric wire holding part 4.

  As shown in FIGS. 1 and 2, the first electric wire holding portion 4 individually holds the respective one end portions 2D and 2E of the first and second electric wire portions 2B and 2C. The first electric wire holding portion 4 is provided at one end in the longitudinal direction of the table 31 and the work table 3. Moreover, the 1st electric wire holding part 4 is provided with the 1st base board 41, a pair of 1st axial support part 42, a pair of 1st edge part holder 43, etc., as shown in FIG. Has been. The first base plate 41 is formed in a flat plate shape and a rectangular shape, and is fixed to the table 31 or the work table 3. The pair of first shaft support portions 42 are both directly fixed to the first base plate 51. The pair of first end holders 43 are set to be able to rotate independently of each other and to be capable of restricting rotation, and are supported by the pair of first shaft support portions 42. Each of the first end holders 43 rotates in the clockwise and counterclockwise forward and reverse directions with respect to the respective shaft support portions 42, as indicated by white double arrows B and C in FIG. It is free.

  As shown in FIGS. 1 and 2, the first end holders 43 individually hold the one end portions 2D and 2E of the first and second electric wire portions 2B and 2C, respectively. Each of the first end holders 43 is disposed so as to be separated from each other in the width direction of the table 31 and the work table 3 and is set so as not to interfere with each other when being rotated. As a result, the distance between the first end holders 43 is such that the first electric wire portion 2B and the second electric wire portion 2C held individually by the first end holders 43 are rotationally driven. The size is set so as not to interfere with each other when twisted. The spacing between the first end holders 43 is, for example, the rotational speed of the first end holders 43, the size and hardness of the wire 2 that is the material of the stranded wire to be manufactured, and twisting. An appropriate size is appropriately set according to the size of the twisting pitch of the wires or the fineness or roughness of the twisting. Each first end holder 43 includes a first rotating shaft 44, a first rotating body 45, a first grip receiving portion 46, a first grip portion 47, a first grip operation lever 48, and the like. It is comprised.

  The first rotating shaft 44 is provided so as to extend along the longitudinal direction of the table 31 and the work table 3. The first rotation shaft 44 is rotatably supported by the first shaft support portion 42. As a result, as shown by white double-headed arrows B and C in FIG. 2, the first rotation shaft 44 is rotatable in the clockwise and counterclockwise forward and reverse directions along the axis. is there. The first rotating body 45 is fixed to the first rotating shaft 44 and rotates integrally with the first rotating shaft 44. The first grip receiving portion 46 is provided on the distal end side of the first rotating body 45 that is opposite to the side attached to the first rotating shaft 44 of the first rotating body 45. That is, the first grip receiving portion 46 is provided on the side of the first rotating body 45 facing the second electric wire holding portion 5. The first grip portion 47 is provided so as to be able to advance and retract from the direction orthogonal to the axial direction of the first rotation shaft 44 toward the first grip receiving portion 46. The first grip 47 has a spring mechanism, a lock mechanism, and the like (not shown), and the first grip receiving portion 46 is connected to the first ends 2D and 2E of the first and second electric wire portions 2B and 2C, respectively. It can be held (chucked) between. The first grip operation lever 48 moves the first grip portion 47 with respect to the first rotating body 45 by operating this.

  As shown in FIGS. 1 and 2, the second electric wire holding portion 5 includes a folded portion 2 </ b> A of the second electric wire 2 that is the other end of each of the first and second electric wire portions 2 </ b> B and 2 </ b> C. Hold in place. The second electric wire holding part 5 is arranged to face the first electric wire holding part 4 in the longitudinal direction of the table 31 and the work table 3. That is, the second wire holding part 5 is provided at the other end in the longitudinal direction of the table 31 and the work table 3 shown on the lower right side of FIG. With such a configuration, the first and second electric wire portions 2B and 2C are each pulled and held substantially linearly between the first electric wire holding portion 4 and the second electric wire holding portion 5. .

  In addition, as shown in FIGS. 1 and 2, the second electric wire holding portion 5 includes the second base plate 51, the second shaft support portion 52, and the like, like the first electric wire holding portion 4 described above. The second end holder 53 is provided. The second base plate 51 is formed in a flat plate shape and a rectangular shape, and is fixed to the table 31 in a posture in which the longitudinal direction thereof is along the width direction of the table 31 and the work table 3. Further, the second shaft support portion 52 is attached to the center portion in the longitudinal direction of the second base plate 51. Accordingly, the second shaft support portion 52 is disposed in the center portion in the width direction of the table 31 and the work table 3 together with the second end holder 53. More specifically, the second shaft support portion 52 is disposed at the center of each of the shaft support portions 42 in the direction in which the pair of first shaft support portions 42 are arranged together with the second end holder 53. Is done. With such a configuration, each of the first and second electric wire portions 2B and 2C is held to have substantially the same length between the first electric wire holding portion 4 and the second electric wire holding portion 5. The At the same time, the first and second electric wire portions 2B and 2C are substantially evenly applied with the same tension.

  However, unlike the pair of first shaft support portions 42 described above, the second shaft support portion 52 is indirectly connected to the second shaft support via two elongated tension maintaining rails 59 each having a spring mechanism (not shown). The base plate 51 is attached. As shown in FIGS. 1 and 2, these two tension maintaining rails 59 are fixed to the second base plate 51 in a mutually parallel posture separated by a predetermined interval. At the same time, the two tension maintaining rails 59 are fixed to the second base plate 51 in a posture in which the longitudinal direction thereof is along the width direction orthogonal to the longitudinal direction of the second base plate 51. That is, the tension maintaining rails 59 are fixed to the table 31 or the work table 3 in a posture in which the longitudinal direction thereof is along the longitudinal direction of the table 31 and the work table 3.

  And the 2nd axial support part 52 is installed on each rail 59 for tension maintenance via the base 52a. The pedestal 52a is slidably mounted on each of the tension maintaining rails 59 along the longitudinal direction thereof. More specifically, the pedestal 52a is set to reciprocate along each tension maintaining rail 59 in accordance with the magnitude of tension applied to the first and second electric wire portions 2B and 2C. For example, it is assumed that the tension applied to each of the first and second electric wire portions 2B and 2C exceeds a size necessary for properly twisting the electric wire portions 2B and 2C. In this case, the pedestal 52a moves in a direction approaching the first electric wire holding portion 4 along each tension maintaining rail 59 to weaken the tension applied to the electric wire portions 2B and 2C. Moreover, suppose that the tension | tensile_strength concerning each 1st and 2nd electric wire part 2B, 2C is smaller than the magnitude | size required in order to twist together each electric wire part 2B, 2C appropriately. In this case, the pedestal 52a moves in a direction away from the first electric wire holding portion 4 along the respective tension maintaining rails 59, thereby increasing the tension applied to the electric wire portions 2B and 2C. With such a configuration, the tension applied to the electric wire portions 2B and 2C during the twisting operation of the first and second electric wire portions 2B and 2C can be properly twisted together. Set to size.

  Further, unlike the pair of first shaft support portions 42 described above, the second shaft support portion 52 is configured to have a function as a terminal portion rotation actuator that rotationally drives the second end holder 53. ing. In other words, the second shaft support portion 52 not only simply supports the second end holder 53 but also functions as a second rotation drive portion that rotates the second end holder 53. Have both. In the present embodiment, the second rotation driving unit 52 rotates the second end holder 53 and holds the first and second electric wire parts held by the second end holders 52. The setting is such that 2B and 2C are rotated together. The second rotation drive unit 52 can also be regarded as a part of components of the drive mechanism 6 described later.

  In the present embodiment, an electric motor that operates with electric power is employed as the second rotation drive unit 52. The second motor 52 is supplied with electric power necessary for rotational driving from an electrical component 61 described later, and a control signal for controlling the rotational driving state is transmitted. The second end holder 53 is supported by a second motor 52 as a second rotation drive unit so that the second end holder 53 can be rotated and its rotation can be restricted. The second end holder 53 can be rotated in both the clockwise and counterclockwise forward and reverse directions by the second motor 52, as indicated by the white double-headed arrow D in FIG. Further, the second end holders 53 are set so as to be rotatable independently of the first end holders 43 described above.

  As shown in FIGS. 1 and 2, the second end holder 53 holds the folded portion 2A as the other end of each of the first and second electric wire portions 2B and 2C at one place. The second end holder 53 has the same configuration as the first end holder 43 described above. That is, the second end holder 53 includes the second rotating shaft 54, the second rotating body 55, the second grip receiving portion 56, the second grip portion 57, the second grip operation lever 58, and the like. It is comprised.

  The second rotation shaft 54 is provided so as to extend along the longitudinal direction of the table 31 and the work table 3. The second rotating shaft 54 is supported by the second motor 52 so as to be rotationally driven. As a result, as indicated by a white double-headed arrow D in FIG. 2, the second rotation shaft 54 can freely rotate in both the clockwise and counterclockwise forward and reverse directions around the axis. The second rotating body 55 is fixed to the second rotating shaft 54 and rotates integrally with the second rotating shaft 54. The second grip receiving portion 56 is provided on the distal end side of the second rotating body 55, which is the side opposite to the side attached to the second rotating shaft 54 of the second rotating body 55. That is, the second grip receiving portion 56 is provided on the side of the second rotating body 55 facing the first electric wire holding portion 4. The second grip portion 57 is provided so as to be able to advance and retract from the direction orthogonal to the axial direction of the second rotation shaft 54 toward the second grip receiving portion 56. The second grip part 57 has a spring mechanism, a lock mechanism, etc. (not shown), and the other end 2A of each of the first and second electric wire parts 2B and 2C is connected to the second grip receiving part 56. It can be held (chucked) between the two. The second grip operation lever 58 operates this to move the second grip portion 57 forward and backward with respect to the second rotating body 55.

  As shown in FIGS. 1 and 2, the drive mechanism 6 includes an electrical component 61, a first rotation drive unit 62, a first gear 63, a second gear 64, a toothed belt 65, and the like. Has been. Further, the second motor 52 as the second rotation driving unit described above may be a part of the components of the driving mechanism 6. The electrical component 61 is provided at one end of the table 31 and the work table 3 in the longitudinal direction, similarly to the first electric wire holding unit 4 described above. However, the electrical component 61 is disposed not on the table 31 but on the side of the work table 3 and may interfere with each other by physically or electrically interfering with the first wire holding unit 4. There is no setting. The electrical unit 61 is connected to a power source (not shown) and an operation unit 7 described later. The electrical component 61 supplies electric power necessary for rotational driving to the first rotational driving unit 62 and the second motor 52 based on the operation in the operation unit 7 and controls their rotational driving state. A control signal is transmitted. That is, the electrical unit 61 functions as a control unit of the drive mechanism 6.

  The first rotational drive unit 62 is controlled in its rotational drive state based on the power supplied from the electrical component 61 and the control signal transmitted from the electrical component 61. The first rotation driving unit 62 drives the pair of first end holders 43 to rotate, and the first and second electric wire parts 2B held by the first end holders 43, 2C is individually rotated around each axis. That is, the first rotation drive unit 62 is a terminal portion rotation actuator that rotates the first end holders 43 in the same manner as the second rotation drive unit 52 described above. In the present embodiment, an electric motor that operates with electric power is employed as the first rotation drive unit 62, as with the second rotation drive unit 52 described above. In the following description, the first rotation driving unit 62 is simply referred to as a first motor.

  The first gear 63 is directly connected to the rotation shaft of the first motor 62 and is connected to the first rotation shaft 44 of one of the pair of first end holders 43. Has been. On the other hand, the second gear 64 is connected to the first rotating shaft 44 of the other holder 43 of the pair of first end holders 43, but the first motor 62. It is not directly connected to the rotating shaft. In the present embodiment, the diameter and the number of teeth of each of the first and second gears 63 and 64 are set to the same value. The toothed belt 65 is wound around the first and second gears 63 and 64.

  According to the drive mechanism 6 having such a configuration, the first gear 63, the one first rotating shaft 44, and the one first end holder 43 are in the direction indicated by the arrow B in FIG. Along with this, the first motor 62 is driven to rotate directly. On the other hand, the second gear 64, the other first rotating shaft 44, and the other first end holder 43 are moved from the first gear 63 along the direction indicated by the arrow C in FIG. It is rotationally driven indirectly via a toothed belt 65. At this time, as described above, since the first and second gears 63 and 64 have the same diameter and the same number of teeth, they are driven to rotate at the same rotational speed. . That is, the drive mechanism 6 of the present embodiment uses one first motor 62 to drive one and the other two first end holders 43 to rotate in the same direction at a constant speed. It is comprised as a synchronous rotation drive mechanism.

  As described above, the second motor 52 and the second end holder 53 that are not connected to the first motor 62 are originally the first motor 62 and the first end holders 43. And can be rotated independently of each other. However, the second motor 52 and the second end holder 53 may be set to rotate at the same speed in synchronization with the first motor 62 and the first end holder 43. That is, the number of times each of the first and second electric wire portions 2B and 2C is twisted by the first end holder 43 and the first and second electric wire portions 2B and 2C are held at the second end portion. The number of times of twisting by the tool 53 may be set to the same number. Such synchronous driving appropriately adjusts the electric power supplied from the electrical component 61 toward the first and second motors 62 and 52 and the control signal transmitted from the electrical component 61 to appropriate values. Can be implemented.

  As shown in FIGS. 1 and 2, the operation unit 7 is provided in the vicinity of the second electric wire holding unit 5. The operation unit 7 is a device for operating the operating state of the device 1 such as operating the stopped device 1 or stopping the operating device 1. More specifically, the operation unit 7 is a device for operating the rotational drive states of the first and second motors 62 and 52. The operation unit 7 includes two switches including a first switch 71 and a second switch 72 provided on the second base plate 51 of the second electric wire holding unit 5. These first and second switches 71 and 72 are arranged in the longitudinal direction of the second base plate 51, that is, in the width direction of the table 31 and the work table 3, and are brought close to the side on which an operator (not shown) works. Has been. As described above, the operation unit 7 performs the driving operation of the twisted wire manufacturing apparatus 1 on the side of the second electric wire holding unit 5 away from the first electric wire holding unit 4 and the driving mechanism 6. It is a setting that can be done.

  The first switch 71 is a switch for operating the rotational driving state of the first motor 62. In a state where the first motor 62 stops rotating (OFF state), the operator depresses the first switch 71 once. Then, a signal is transmitted from the first switch 71 toward the electrical unit 61 of the drive mechanism 6. The electrical component 61 that has received this signal transmits a control signal for starting the rotational drive of the first motor 62 to the first motor 62 via a predetermined control circuit (not shown) provided in the electrical component 61. . When the first motor 62 receives the control signal for starting the rotation drive, the stopped first motor 62 starts the rotation drive.

  Further, in a state where the first motor 62 is rotationally driven (ON state), the operator depresses the first switch 71 once. Then, a new signal is transmitted from the first switch 71 toward the electrical unit 61 of the drive mechanism 6. The electrical unit 61 that has received this new signal transmits a control signal for stopping the rotational drive of the first motor 62 toward the first motor 62 via a predetermined control circuit or the like. When the first motor 62 receives the control signal for stopping the rotation drive, the first motor 62 during the rotation drive stops the rotation drive.

  The second switch 72 is a switch for operating the rotational driving state of the second motor 52. The operation method and function of the second switch 72 are the same as the operation method and function of the first switch 71 described above. That is, in a state where the second motor 52 stops rotating (OFF state), the operator depresses the second switch 72 once. Then, a signal is transmitted from the second switch 72 toward the electrical component 61 of the drive mechanism 6. The electrical unit 61 that has received this signal transmits a control signal for starting the rotational drive of the second motor 52 to the second motor 52 via a predetermined control circuit or the like. When the second motor 52 receives the control signal for starting this rotational drive, the stopped second motor 52 starts its rotational drive.

  Further, in a state where the second motor 52 is rotationally driven (ON state), the operator depresses the second switch 72 once. Then, a new signal is transmitted from the second switch 72 toward the electrical unit 61 of the drive mechanism 6. The electrical unit 61 that has received this new signal transmits a control signal for stopping the rotation of the second motor 52 to the second motor 52 via a predetermined control circuit or the like. When the second motor 52 receives the control signal for stopping the rotational drive, the first motor 52 that is rotationally driven stops the rotational drive.

  In the present embodiment, the first and second switches 71 and 72 are set in a state in which the operator can press down in the initial state. At the same time, the first and second switches 71 and 72 pushed down by the worker are set to return to the initial pushable state when the worker releases their hands from the switches 71 and 72. . The first and second motors 62 and 52 are in any state of the rotation driving state and the rotation stop state as long as the first and second switches 71 and 72 are not pushed down. It is set to maintain that state. This is the end of the description of the configuration and function of the twisted wire manufacturing apparatus 1.

[Manufacturing method of stranded wire]
Next, the manufacturing method of the twisted wire using the manufacturing apparatus 1 of the twisted wire mentioned above is demonstrated mainly with reference to FIG.3 and FIG.4. First, an example relating to the method for manufacturing a twisted wire of the present embodiment will be described mainly with reference to FIG.

(One example)
First, the electric wire 2 folded at the folded portion 2 </ b> A is extended and placed on the concave groove portion of the table 31. At this time, the folded portion 2A is arranged toward the second electric wire holding portion 5 and the one end portions 2D and 2E of the first and second electric wire portions 2B and 2C are connected to the first electric wire holding portion 4. Place it toward the side.

  Next, after operating the grip operation lever 58 of the second end holder 53 to separate the grip portion 57 from the grip receiving portion 56, the wire 2 is inserted into the gap between the grip portion 57 and the grip receiving portion 56. The folded portion 2A is inserted. Subsequently, the gripping operation lever 58 is operated to bring the gripping portion 57 close to the gripping receiving portion 56, and the folded portion 2 </ b> A of the electric wire 2 is gripped (chucked) between the gripping portion 57 and the gripping receiving portion 56. That is, the other end portions 2A of the first and second electric wire portions 2B and 2C are substantially collectively bundled between the grip portion 57 and the grip receiving portion 56 of the second end holder 53. Hold it. When this operation is performed, the second motor 52 is held in a rotation stopped state (OFF state) so that the second end holder 53 does not rotate around the rotation shaft 54.

  On the other hand, of the pair of first end holders 43, for example, the grip operation lever 48 of one first end holder 43 directly connected to the first motor 62 is operated to hold the grip part 47. Separated from the portion 46. Then, after one end 2D of the first electric wire portion 2B is inserted into the gap between the grip portion 47 and the grip receiving portion 46, the grip operation lever 48 is operated to bring the grip portion 47 closer to the grip receiving portion 46. As a result, the one end portion 2D of the first electric wire portion 2B is gripped between the grip portion 47 and the grip receiving portion 46. Similarly, the second electric wire portion 2 </ b> C is provided between the grip portion 47 and the grip receiving portion 46 in the other first end holder 43 that is indirectly connected to the first motor 62. The one end part 2E of is held.

  Note that when the gripping operation of the one end portions 2D and 2E to the first end holder 43 is performed, the first motor 62 is held in the rotation stopped state (OFF state), and the first each It is set so that the end holders 43 do not rotate around the respective rotation shafts 44. When the first end holders 43 hold the one end portions 2D and 2E of the first and second electric wire portions 2B and 2C, the first and second electric wire portions 2B and 2C are used. The tension is applied almost evenly. At the same time, the first and second electric wire portions 2B and 2C are set so that slack is unlikely to occur.

  Next, the operator depresses the first switch 71 of the operation unit 7 once. Then, the first motor 62 in the rotation stopped state starts to rotate and enters the rotation driving state (ON state). Along with this, as indicated by white arrows B and C in FIG. 3A, the first end holders 43 start to rotate at the same speed in the same direction in synchronization with each other. Also, the one end portions 2D and 2E of the first and second electric wire portions 2B and 2C held by the first end holders 43 rotate at the same speed in the same direction in synchronization with each other. start. At this time, since the second end holder 53 maintains the rotation stopped state, the folded portion 2A of the electric wire 2 is also held in a state where the rotation is prohibited. As a result, the first electric wire portion 2B and the second electric wire portion 2C start to be twisted in the same direction, with the respective shaft cores indicated by alternate long and short dash lines S2 and S3 in FIG. This is called a twisting process.

  In this embodiment, each first end holder 43 rotates counterclockwise when viewed from the second electric wire holding part 5 side when facing the first electric wire holding part 4. Set. Therefore, each of the first and second electric wire portions 2B and 2C extends along the respective shaft cores S2 and S3 when the first electric wire holding portion 4 is viewed from the second electric wire holding portion 5 side. Will be twisted counterclockwise. As a result, the first electric wire portion 2B and the second electric wire portion 2C are opposite to each other with the folded portion 2A as a boundary in a state where they are linearly extended and returned to a single continuous electric wire 2. It will be twisted.

  The operator confirms that the first electric wire portion 2B and the second electric wire portion 2C have been twisted a desired number of times by the above-described twisting process, and then the first switch 71 of the operation portion 7. Press once again. Then, the first motor 62 in the rotationally driven state stops its rotation and enters the rotation stopped state again. Along with this, the first end holders 43 are also brought into the rotation stopped state again from the synchronous rotation driving state. This completes the twisting process.

  Next, the operator depresses the second switch 72 of the operation unit 7 once. Then, the second motor 52 in the rotation stopped state starts to rotate and enters a rotation driving state (ON state). Accordingly, the second end holder 53 starts to rotate in the direction indicated by the white arrow D in FIG. The direction D in which the second end holder 53 rotates indicates the direction in which twisting of the first electric wire portion 2B and the second electric wire portion 2C is eliminated. As described above, in this embodiment, the first electric wire portion 2B and the second electric wire portion 2C are viewed from the side of the second electric wire holding portion 5 facing the first electric wire holding portion 4. And the first end holder 43 that rotates counterclockwise. Therefore, in order to eliminate the twist of the first electric wire portion 2B and the second electric wire portion 2C, when the first electric wire holding portion 4 is viewed from the second electric wire holding portion 5 side, The two end holders 53 may be rotated in the same direction as the first end holders 43. That is, when viewed from the side of the second electric wire holding part 5 facing the first electric wire holding part 4, the second end holding part 53 is bent in the same manner as the first end holding parts 43. What is necessary is just to rotate clockwise.

  Of course, the direction in which the second end holder 53 rotates is counterclockwise when the first and second electric wire holders 4 and 5 are viewed from opposite directions. Is the opposite. That is, the direction in which the second end holder 53 rotates is clockwise when viewed from the side of the first electric wire holder 4 facing the second electric wire holder 5. As a matter of course, the second motor 52 is also rotationally driven in a direction to eliminate twisting of the first electric wire portion 2B and the second electric wire portion 2C, as with the second end holder 53.

  When the second end holder 53 starts to rotate, the electric wire 2 that is the other end of each of the first and second electric wire sections 2B and 2C gripped by the second end holder 53 is folded back. The part 2A also starts to rotate in the same direction. Then, the first electric wire portion 2B and the second electric wire portion 2C are oriented in the direction indicated by the white arrow D in FIG. 3B with the center line indicated by the alternate long and short dash line S1 in FIG. Start to rotate all at once. As a result, as shown in FIG. 3C, the first electric wire portion 2B and the second electric wire portion 2C have their first electric wire held from the second electric wire holding portion 5 side while their respective twists are eliminated. It is twisted sequentially toward the part 4 side. This is called a twisting process.

  In addition, at the time of starting this twisting process, the 1st electric wire part 2B and the 2nd electric wire part 2C are respectively extended from linear state as shown to Fig.3 (a) from FIG. As shown in b), it is bent due to twisting. In the twisting step described above, the elongation and stress in the circumferential direction due to twisting (remaining) stored in the first and second electric wire portions 2B and 2C in the twisting step described above are caused by the electric wire portions 2B. , 2C until it is almost completely eliminated. For example, the twist until the number of twists of the first wire portion 2B and the second wire portion 2C reaches the same number as the number of twists of the first wire portion 2B and the second wire portion 2C. What is necessary is just to continue a matching process.

  After confirming that the first electric wire portion 2B and the second electric wire portion 2C have been twisted a desired number of times in the twisting step described above, the operator turns the second switch 72 of the operation portion 7 to 1 again. Press it down. Then, the second motor 52 in the rotationally driven state stops its rotation and enters the rotation stopped state again. Along with this, the second end holder 53 also changes from the rotation state to the rotation stop state again. Thereby, a twisting process is complete | finished. At the stage where the twisting process is completed, as shown in FIG. 3 (c), the irregular entangled state shown in FIG. 3 (b) is eliminated in the first electric wire portion 2B and the second electric wire portion 2C. ing. The first electric wire portion 2B and the second electric wire portion 2C are in close contact with each other regularly and properly twisted.

  After the twisting step is completed, the operator removes the folded portion 2A of the electric wire 2 from the second end holder 53 as shown by an arrow E in FIG. The gripping of the folded portion 2A by the tool 53 is released. By the twisting process described above, the circumferential elongation and stress due to the twist remaining in the first and second electric wire parts 2B and 2C in the twisting process are almost completely obtained from the twisted electric wire parts 2B and 2C. It has been resolved. As a result, the first and second electric wire portions 2B and 2C twisted together hardly generate a repulsive force against the twisting stress. Therefore, even when the folded portion 2A of the electric wire 2 is removed from the second end holder 53, the first and second electric wire portions 2B and 2C that are twisted together are repelled by the repulsive force against the twisting stress. There is almost no risk of returning to the untwisted state.

  In addition, after twisting the 1st electric wire part 2B and the 2nd electric wire part 2C by the twisting process mentioned above, when it is judged that those twisting is insufficient, the same twisting process is again performed. Can be done. That is, after gripping the folded portion 2A of the electric wire 2 again by the second end holder 53 in the rotation stopped state, the first end holder 43 in the rotation stopped state is again rotated to rotate the first electric wire portion. 2B and the 2nd electric wire part 2C are respectively twisted again. Subsequently, after the rotation of the first end holders 43 is stopped, the second end holders 53 in the rotation stopped state are rotated again, and the first electric wire portion 2B and the second electric wire portion 2C are rotated. Twist them together.

  After confirming that the first electric wire portion 2B and the second electric wire portion 2C are sufficiently twisted, the operator grasps the folded portion 2A with the second end holder 53 and each first end. The gripping of the end portions 2D and 2E by the portion holder 43 is released. And the electric wire 2 which consists of the 1st electric wire part 2B and the 2nd electric wire part 2C which were twisted together is taken out from each of the 1st and 2nd electric wire holding parts 4 and 5, and is mounted on the table 31. Subsequently, as shown in FIG. 3 (e), the electric wire 2 is cut in the vicinity of the folded portion 2A to actually separate the first electric wire portion 2B and the second electric wire portion 2C. As shown in FIG. 3 (e), a twisted wire (twisted wire, twisted pair wire) 8 in which the first electric wire portion 2B and the second electric wire portion 2C are properly twisted with each other by the steps described so far. Can be obtained. This completes the twisted wire manufacturing operation (manufacturing process) based on the twisted wire manufacturing method according to an example of the present embodiment.

(Modification)
Next, with reference mainly to FIG. 4, a description will be given mainly of differences from the one example with respect to a modification of the example according to the method for manufacturing the twisted wire of the present embodiment. In addition, the same code | symbol is attached | subjected to the part same as one Example mentioned above, and the specific and detailed description is abbreviate | omitted. Similarly, specific and detailed descriptions of the same steps or operations as those in the above-described embodiment will be omitted.

  First, as shown in FIG. 4A, the second end holder 53 holds the folded portion 2A of the electric wire 2 and holds each first end portion by the same process as in the above-described embodiment. The tool 43 is caused to grip the respective one end portions 2D and 2E of the first electric wire portion 2B and the second electric wire portion 2C. Thereafter, the operator depresses the first switch 71 of the operation unit 7 once to hold the first motor 62 and the first end portions in the directions indicated by the white arrows B and C in FIG. The tool 43 is driven to rotate. That is, the first electric wire portion 2B and the second electric wire portion 2C having the first end portions 2D and 2E held by the first end holders 43 are rotated counterclockwise along the respective axis S2 and S3. Rotate and twist. At this time, unlike the above-described embodiment, in this modification, the second motor 52 and the second end holders 53 are also rotated in the direction indicated by the white arrow D in FIG. Drive.

  For example, the operator depresses the second switch 72 once at the same time as the first switch 71 is depressed by the worker or after the first switch 71 is depressed. As a result, as shown in FIG. 4A, the second end holder 53 is rotated simultaneously with the start of the rotation of the first end holder 43 or the first end holder 43. Is rotated in parallel with each of the first end holders 43. That is, the first electric wire portion 2B and the second electric wire portion 2C held by the second end holder 53 with the folded portion 2A as the other end are rotated counterclockwise together with the central axis S1. Let them twist together. In this case, the second end holder 53 may be set to rotate in synchronization with each first end holder 43. That is, what is necessary is just to synchronize the twist process of the 1st electric wire part 2B and the 2nd electric wire part 2C with each twist process of the 1st electric wire part 2B and the 2nd electric wire part 2C. Thus, the first electric wire portion 2B and the second electric wire portion 2C are twisted in parallel by the same number as the number of twists while being twisted the same number of times. As described above, in the present modification, the twisting process and the twisting process of the first electric wire portion 2B and the second electric wire portion 2C, which are performed exclusively as separate processes in the above-described embodiment, Are carried out substantially in parallel.

  As described above, the operator confirms that the first electric wire portion 2B and the second electric wire portion 2C have been twisted into a desired state by the twisting step and the twisting step performed substantially in parallel. After that, the first and second switches 71 and 72 are pressed once again. Thereby, the rotation of the first end holder 43 and the second end holder 53 is stopped, and the first electric wire portion 2B and the second electric wire portion 2C are twisted and twisted together. Ends. At this stage, as shown in FIG. 4 (b), the irregular entanglement due to twisting is eliminated from the first electric wire portion 2B and the second electric wire portion 2C as in the above-described embodiment. Yes. The first electric wire portion 2B and the second electric wire portion 2C are in close contact with each other regularly and properly twisted.

  Subsequently, as shown by an arrow E in FIG. 4C, the operator removes the folded portion 2 </ b> A of the electric wire 2 from the second end holder 53, and the folded portion by the second end holder 53. Release the grip of 2A. In addition, after twisting the 1st electric wire part 2B and the 2nd electric wire part 2C by the process mentioned above, when it is judged that those twists are insufficient, it is the same as that of one Example mentioned above. You only have to deal with it. That is, the twisting step and the twisting step of the first electric wire portion 2B and the second electric wire portion 2C may be performed again substantially in parallel.

  After confirming that the first electric wire portion 2B and the second electric wire portion 2C are sufficiently twisted, the worker performs the same process as in the above-described embodiment. As shown in FIG. 4 (d), the first and second electric wire portions 2B and 2C are appropriately twisted together by the above-described steps, as shown in FIG. 4 (d). (Twisted line, twisted pair line) 8 can be obtained. This completes the twisted wire manufacturing operation (manufacturing process) based on the twisted wire manufacturing method according to the present modification.

  As described above, in the present embodiment, the first end portions 2D and 2E of the first electric wire portion 2B and the second electric wire portion 2C are individually rotated in the same direction by the first end holders 43. Then, the first electric wire portion 2B and the second electric wire portion 2C are individually twisted in the same direction. Then, at the same time as or after the start of rotation of the one end portions 2D and 2E by the first end portion holding tools 43, the first electric wire portion 2B and the second electric wire portion 2B and second The rotation of the folded portion 2A of the electric wire 2 as the other end of the electric wire portion 2C is started. At this time, until the twist of the first electric wire portion 2B and the second electric wire portion 2C is almost completely eliminated, the folded portion 2A is rotated in a direction to eliminate the twist. Thereby, in the electric wire 2 after being twisted together, it is difficult for the circumferential elongation and stress (stress) due to twisting to remain. As a result, the twisting back of the twisted wire 8 after manufacture can be almost suppressed or prevented.

  Therefore, according to the present embodiment, the twisted first electric wire portion 2B and the second electric wire portion 2C are hardly twisted, and are not twisted in the circumferential direction or stress due to the twisting. The wire 8 can be easily manufactured. That is, the twisted wire 8 can be easily twisted with the second wire portion 2C and the first wire portion 2B, and the wire portions 2B and 2C have a high degree of adhesion and are difficult to untwist. A device 1 can be provided. Moreover, when manufacturing a twisted wire, conventionally two wires were required, but according to this embodiment, a twisted wire 8 is manufactured using one continuous wire 2. can do. Thereby, waste of material can be omitted, and the stranded wire 8 can be manufactured at a low cost by reducing the manufacturing cost.

  Furthermore, according to the manufacturing apparatus 1 of the stranded wire 8 of the present embodiment, the pair of first end holders 43 can be rotationally driven by the single first motor 62. At the same time, there is no need to use a moving member or a tangling prevention device installed between two electric wires as an indispensable constituent element in the prior art. For this reason, the equipment structure of the apparatus 1 can be simplified, and the complexity and enlargement of the apparatus 1 can be suppressed or prevented. As a result, it is possible to provide the manufacturing apparatus 1 of the stranded wire 8 that is space-saving and light-weighted while being simplified and downsized, and that is relatively inexpensive.

  In addition, the manufacturing apparatus and manufacturing method of the twisted wire which concern on this invention are not limited to one Embodiment mentioned above. As long as it does not deviate from the gist of the present invention, the configuration, shape, setting, process, or the like may be variously changed or combined. Accordingly, even with such changes and combinations, such changes and combinations are included in the technical scope of the present invention as long as the configuration of the present invention is substantially provided.

  For example, in the above-described embodiment, the first electric wire portion 2B and the second electric wire portion 2C formed by folding the continuous one electric wire 2 at the folded portion 2A in the middle portion in the longitudinal direction are twisted 1 A stranded wire 8 was produced. However, the material of the stranded wire 8 is not limited to one continuous electric wire 2. The stranded wire may be manufactured using a plurality of wires that are independent of each other. In this case, if the same number of first end holders are provided according to the number of one end parts in the longitudinal direction of each electric wire, and each one end part is individually held by each first end holder. Good. Moreover, what is necessary is just to hold | maintain the other end part of the longitudinal direction of each electric wire collectively to one 2nd edge part holder.

  In addition, the stranded wire may be manufactured using a plurality of continuous electric wires folded back at the intermediate portion. In this case, if the same number of first end holders are provided according to the number of both ends in the longitudinal direction of each electric wire, and each of the both end parts is individually held by the first end holders, Good. Moreover, what is necessary is just to hold | maintain the folding | returning part of each electric wire collectively in one 2nd edge part holder. In addition, by applying such a method, a twisted wire may be manufactured by using a plurality of electric wires independent from each other and a plurality of electric wires folded back at an intermediate portion. As described above, the stranded wire formed by substantially twisting three or more electric wires is generally called a multi-core cable.

  Furthermore, the place where one continuous electric wire is folded back is not limited to one place. You may manufacture a twisted wire using the electric wire which turned up the continuous one electric wire in several places. In this case, the first end holders are provided by the number obtained by adding the both ends in the longitudinal direction of the electric wire and the folded portions arranged on the same side as the both ends of the electric wire among a plurality of folded portions. And what is necessary is just to hold | maintain these both ends and each folding | returning part separately to each 1st edge part holder. Moreover, what is necessary is just to hold | maintain the folding | turning part arrange | positioned on the opposite side to the both ends of an electric wire collectively in one 2nd edge part holder among several folding parts.

  Thus, according to the manufacturing apparatus and manufacturing method of the twisted wire which concern on this invention, manufacture of a twisted wire is hard to be restrained by the form and kind of electric wire used as the material. Therefore, the twisted wire manufacturing apparatus and manufacturing method according to the present invention can flexibly manufacture the twisted wire in accordance with the form and type of the electric wire that can actually be procured at the work site.

  According to the twisted wire manufacturing apparatus and manufacturing method according to the present invention, each electric wire portion is twisted individually around each axis, and each electric wire portion is oriented to eliminate the twist of each electric wire portion. Rotate together to twist each wire part together. As a result, twisted wires are hardly produced in the twisted electric wire portions, and a twisted wire in which stress due to twisting hardly remains can be easily manufactured. Therefore, the twisted wire manufacturing apparatus and manufacturing method according to the present invention can be used to provide a twisted wire manufacturing apparatus and manufacturing method that are easy to twist and difficult to unwind.

DESCRIPTION OF SYMBOLS 1 Twisted wire manufacturing apparatus 2 One continuous electric wire (second electric wire)
2A folded portion (the other end of each of the first and second electric wire portions)
2B 1st electric wire part (a part of 2nd electric wire)
2C Second electric wire part (part of the second electric wire)
2D One end portion of the first electric wire portion (end portion of the second electric wire)
2E One end portion of the second electric wire portion (end portion of the second electric wire)
8 Twisted wire (twisted wire, twisted-pair wire)
43 1st end holder 52 2nd rotation drive part 53 2nd end holder 62 1st rotation drive part S2 Axle core of the 1st electric wire part S3 Axle core of the 2nd electric wire part

Claims (3)

A plurality of first end holders that can rotate independently of each other while individually holding one end of each of the plurality of electric wire portions;
A first rotation driving unit that rotates each of the first end holders and rotates each of the electric wire parts gripped by the first end holders about the respective shaft cores; and
A second end holder that is rotatable independently of the first end holders while collectively holding the other end of each electric wire part,
Made by comprising: a second rotary drive for rotating collectively the respective wire portion which is gripped by the second end retainer the second end retainer is rotated, the,
In a state where the rotation of the second end holder is stopped , the first end holder is rotated to individually twist the electric wire portions around the axis.
In a state where the rotation of each of the first end holders is stopped, the second end holders are rotated in a direction to eliminate twisting of the electric wire parts, and the electric wire parts are twisted together. An apparatus for producing a stranded wire, characterized in that. The plurality of electric wire portions are folded over at least one of the two or more first electric wires independent from each other and at least one continuous electric wire in at least one intermediate portion in the longitudinal direction thereof. It is composed of at least one of the second electric wires as the electric wire portion,
For each of the first electric wires, the one end and the other end are one end and the other end in the longitudinal direction of the first electric wire, respectively.
Regarding the second electric wire, each of the one end portions is both ends in the longitudinal direction of the second electric wire, and the other end portion is a folded portion obtained by folding the second electric wire. The twisted wire manufacturing apparatus according to claim 1. Wire portion of the plurality of the one with each end portion with each gripping separately, in a state where the electric wires portions grips collectively the other end with each of
After Tsu twisted individually said one of said electric wires portions respectively rotate individually each end around respective axial stops rotation of each end of the one, the previous SL other A method of manufacturing a stranded wire, wherein the ends are rotated together in a direction to eliminate twisting of the electric wire portions and the electric wire portions are twisted together.

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