JP5181895B2 - Twisted wire manufacturing device, twisted wire manufacturing method, and twisted wire - Google Patents

Description

  The present invention relates to a technique for producing a twisted wire by twisting a plurality of electric wires.

  Conventionally, as a method of manufacturing a twisted wire, both ends of a pair of electric wires are held by electric wire clamps, one electric wire clamp is fixed, and the other electric wire clamp is rotationally driven to twist both electric wires. There is a technology to match (first background technology).

  There is also a technique for rotating the ends of the respective electric wires in synchronization with each other on the one electric wire clamp side (second background art).

  As a prior art related to the invention of the present application, for example, there is one described in Patent Document 1.

JP 2004-103516 A

  However, in the first background art, each electric wire itself is largely twisted by twisting rotation. For this reason, it wavy so that each electric wire itself may be disturbed, and the problem that it will become easy to form a big clearance gap between electric wires will arise. The gap formed between the electric wires becomes a factor that increases the impedance of the manufactured twisted wire.

  In the second background art, since the individual electric wires are rotated during the twisting rotation, the individual electric wires are difficult to be twisted. For this reason, in the manufactured twisted wire, there is a problem that untwisting of the electric wires occurs.

  Then, an object of this invention is to make the clearance gap between the wires twisted together as small as possible, and to prevent the unwinding of the twisting.

  In order to solve the above-described problem, a first aspect is a twisted electric wire manufacturing apparatus for twisting a plurality of electric wires, the first electric wire end holding portion holding one end portion of the plurality of electric wires, and the plurality of the electric wires. A plurality of second electric wire end holding portions that respectively hold the ends of the electric wires, and the plurality of electric wires are twisted together between the first electric wire end holding portion and the plurality of second electric wire end holding portions. A plurality of second electric wire end holding units so as to hold the twisting driving unit for rotating the first electric wire end holding unit and the end portions of the plurality of electric wires in a rotatable state and a rotation restricted state, respectively. A wire end support state switching portion that switches between a rotatable state and a rotation restricted state, and twisting of the plurality of wires between the first wire end holding portion and the plurality of second wire end holding portions. A twist rotation restricting portion for restricting rotation for alignment, and the twisting The rotation restricting portion driving portion that moves the rotation restricting portion from the first wire end holding portion toward the plurality of second wire end holding portions, and the plurality of electric wires by the plurality of second wire end holding portions. While rotating the first electric wire end holding portion in a state where the other end portions of the first electric wire end portions are rotatably held, the twisting rotation restricting portion is moved from the first electric wire end portion holding portion to the plurality of second electric wire end portions. After the first twisting process of moving toward the portion holding portion, the first electric wires in a state where the other end portions of the plurality of electric wires are held in a rotation restricted state by the plurality of second electric wire end portion holding portions. A control unit that executes a second twisting process for rotating the end holding unit.

  A 2nd aspect is a manufacturing method of the twisted electric wire which concerns on a 1st aspect, Comprising: The said electric wire edge part support state switching part rotates the said some 2nd electric wire edge part holding | maintenance part synchronizing mutually. An electric wire end rotation drive unit, and the control unit rotates the other end of each of the plurality of electric wires by driving the electric wire end rotation drive unit during the first twisting process. is there.

  A 3rd aspect is a manufacturing method of the twisted electric wire which twists a plurality of electric wires, (a) holding the one end part and other end part of a plurality of electric wires, (b) In a state where the other end portions are rotatably held, the one end portion of the plurality of electric wires is rotated with respect to the other end portion of the plurality of electric wires, and the position where the twisting of the plurality of electric wires is regulated is A step of moving from one end of the plurality of electric wires toward the other end, and (c) holding the other end of each of the plurality of electric wires in a rotation-restricted state, And rotating with respect to the other ends of the plurality of electric wires.

  A 4th aspect is a manufacturing method of the twisted electric wire which concerns on a 3rd aspect, Comprising: In the said process (b), synchronizing with rotation of the one end part of these electric wires, each of these electric wires is each. The other end is rotated synchronously.

  A 5th aspect is the twisted electric wire manufactured by the manufacturing method of the twisted electric wire which concerns on the 3rd or 4th aspect.

  According to the first aspect, in order to rotate the first electric wire end holding portion in a state where the other end portions of the plurality of electric wires are rotatably held by the plural second electric wire end holding portions, A plurality of electric wires are twisted together so as to eliminate the twisting of the electric wires. For this reason, the undulation which is disturb | confused of each electric wire is suppressed, and the clearance gap between electric wires can be made small. At this time, in order to move the twisting rotation restricting portion from the first electric wire end holding portion toward the plurality of second electric wire end holding portions, the twisting position is closer to the front side than the twisting rotation restricting portion. Be regulated. For this reason, the twisted wrinkle of an electric wire is effectively eliminated by the other end part side of an electric wire. Then, in order to rotate the first wire end holding portion in a state where the other end portions of the plurality of wires are held in the rotation restricted state by the plurality of second wire end holding portions, A twisted hook is attached to prevent unwinding of the twisted wires.

  According to the second aspect, during the first twisting process, in order to rotate the other end of each of the plurality of electric wires by driving the electric wire end rotation driving unit, during the first twisting process, The rotation of the other end portion of each electric wire with respect to the rotation for twisting is stabilized, and the twisting pitch is stabilized.

  According to the third aspect, in order to rotate one end of the plurality of electric wires with respect to the other end of the plurality of electric wires in a state where the other end of each of the plurality of electric wires is rotatably held, Then, a plurality of electric wires are twisted together so as to eliminate the twisting habit of each electric wire. For this reason, the undulation which is disturb | confused of each electric wire is suppressed, and the clearance gap between electric wires can be made small. Moreover, in this case, since the location where the twisting is restricted is moved from one end portion of the plurality of electric wires to the other end portion, the twisting location is restricted in front of the twisting restriction location. For this reason, the twisted wrinkle of an electric wire is effectively eliminated by the other end part side of an electric wire. Then, in order to rotate one end portion of the plurality of electric wires with respect to the other end portion of the plurality of electric wires in a state where the other end portions of the plurality of electric wires are held in the rotation restricted state, the individual electric wires are twisted. Wrinkles are attached to prevent unwinding of the twisted wires.

  According to the fourth aspect, in the step (b), the other end portions of the plurality of electric wires are rotated in synchronization with the twisting rotation, so that the rotation of the individual wires with respect to the twisting rotation is stable. And the twisting pitch is stabilized.

  According to the 5th aspect, while making the clearance gap between the twisted electric wires as small as possible, the twisted electric wire which prevented unraveling of the twisting can be obtained.

  Hereinafter, the manufacturing apparatus of the twisted electric wire which concerns on embodiment, the manufacturing method of a twisted electric wire, and the twisted electric wire are demonstrated.

  FIG. 1 is a schematic side view showing a twisted electric wire manufacturing apparatus 10, FIG. 2 is a schematic plan view showing the twisted electric wire manufacturing apparatus 10, and FIG. 3 is a schematic view taken along line III-III in FIG. FIG. 4 is a schematic view taken along line IV-IV in FIG.

  The twisted electric wire manufacturing apparatus 10 includes a first electric wire end holding portion 12, a twist driving portion 20, a plurality of second electric wire end holding portions 30, a wire end support state switching portion 40, and a twisted wire. An alignment rotation restricting unit 50, a rotation restricting unit driving unit 60, and a control unit 70 as a control unit are provided.

  The 1st electric wire edge part holding | maintenance part 12 is comprised so that the one end part of the some (here 2 pieces) electric wire W can be hold | maintained. Here, the first electric wire end holding portion 12 has a pair of holding pieces 14. The pair of holding pieces 14 are configured to be able to hold one end portions of the two electric wires W by sandwiching one end portions of the two electric wires W in a lump between them. As a mechanism for applying a force to sandwich one end of the two electric wires W between the pair of holding pieces 14, a toggle clamp mechanism that can self-lock when the connecting shafts of a plurality of link members exceed the fulcrum, or a coil A spring mechanism such as a spring, a leaf spring or a torsion coil spring, a mechanism using screwing, or a mechanism capable of hooking or connecting the end of the electric wire W can be employed. In short, the 1st electric wire edge part holding | maintenance part 12 should just be the structure which can hold | maintain the one end part of the some electric wire W so that rotation is impossible respectively, maintaining a mutual positional relationship.

  The first wire end holding portion 12 is rotatably supported at one end portion of the base 11 by a rotation support portion having a pair of bearing portions 16 and a first support shaft portion 17. More specifically, the pair of bearing portions 16 protrude from one end portion of the base 11 with a space therebetween, and the rod-shaped first support shaft portion 17 is rotatably supported by the pair of bearing portions 16. ing. And the 1st electric wire edge part holding | maintenance part 12 is rotatably supported by the surroundings of the predetermined | prescribed twist axis | shaft X1 by attaching and fixing to the one end part of the 1st support shaft part 17. As shown in FIG.

  The twist drive unit 20 is configured to be capable of rotationally driving the first wire end holding unit 12 around a predetermined twist axis X1. More specifically, the twist drive unit 20 includes a motor 21 such as a servo motor and a transmission mechanism unit 22 that transmits the rotational driving force of the motor 21 to the first support shaft unit 17 (see FIG. 1 to FIG. 3). The transmission mechanism section 22 has a pulley 22a fixed to the rotating shaft section of the motor 21, a pulley 22b fixed to the first support shaft section 17, and an annular belt 22c wound around both pulleys 22a and 22b. doing. Then, the rotational driving force of the motor 21 is transmitted from the pulley 22a to the first support shaft portion 17 via the annular belt 22c and the pulley 22b, and the first wire end holding portion 12 is synchronized with the rotation of the first support shaft portion 17. Is configured to rotate. By the rotation of the first wire end holding portion 12, a plurality of wires arranged between the first wire end holding portion 12 and the plurality of second wire end holding portions 30 so as to stretch between them. The electric wires W are twisted together.

  In addition, the structure of a twist drive part is not restricted to the said example. For example, the twist driving unit may be configured such that the rotational driving force of the motor is transmitted through an appropriate power transmission mechanism such as a gear, and the rotation shaft of the motor is the first support shaft or the first shaft. The structure directly connected to 1 electric wire edge part holding | maintenance part may be sufficient. In short, the twist drive unit may be configured to rotate the first wire end holding unit so that the plurality of wires W are twisted together.

  The plurality (two in this case) of second electric wire end holding portions 30 are configured to be able to hold the other end portions of the electric wires W individually. Each second electric wire end holding portion 30 has a pair of holding pieces 32, and by sandwiching the other end of one electric wire W between the pair of holding pieces 32, The other end can be held. As a mechanism for applying a force for sandwiching the other end portion of one electric wire W between the pair of holding pieces 32, a toggle clamp mechanism, a spring mechanism, and screwing are used as in the first electric wire end portion holding portion 12. The mechanism used, or a mechanism that can hook or tie the end of the electric wire W can be employed. In short, the second electric wire end holding portion 30 may be configured to hold the other end portion of one electric wire W.

  The two second electric wire end holding portions 30 are respectively rotatable to the other end portion of the base 11 in a parallel state by a rotation support portion having a pair of bearing portions 36 and a second support shaft portion 37. It is supported. More specifically, the pair of bearing portions 36 protrude from the other end portion of the base 11 with a space therebetween, and two rod-shaped second support shaft portions 37 are parallel to the pair of bearing portions 36. Is supported in a freely rotating manner. Then, the two second electric wire end holding portions 30 are respectively attached and fixed to one end portions of the two second support shaft portions 37 so as to be rotatably supported around a predetermined electric wire individual rotation axis X2. Yes. The two electric wire individual rotating shafts X2 are set so as to be located on both sides of the twisting shaft X1.

  The wire end support state switching unit 40 is configured to be able to switch the two second wire end holding units 30 between a rotatable state and a rotation restricted state. More specifically, the wire end support state switching unit 40 rotates the motor 41 such as a servomotor and the rotational driving force of the motor 41 in synchronization with the two second wire end holding units 30 in the same direction. And a transmission mechanism 42 that transmits the driving force to be transmitted (see FIGS. 1, 2, and 4). The transmission mechanism 42 includes a pulley 41a fixed to the rotating shaft of the motor 41, a pulley 41b and an intermediate gear 41d fixed to the intermediate transmission shaft 43, an annular belt 41c wound around the pulleys 41a and 41b, And a gear 41e fixed to each of the pair of second support shaft portions 37. The intermediate transmission shaft 43 is rotatably supported by a pair of bearing portions 36 at a position distant from the pair of second support shaft portions 37 toward the motor 41, and an intermediate gear fixed to the intermediate transmission shaft 43. 41d meshes with a gear 41e fixed to each of the pair of bearing portions 36. Then, the rotational driving force of the motor 41 is transmitted from the pulley 41a to the pulley 41b via the annular belt 41c to rotate the intermediate transmission shaft 43. Further, the rotational driving force of the intermediate transmission shaft 43 is transmitted from the intermediate transmission shaft 43 to the two gears. By being transmitted to 41e, the two second support shaft portions 37 rotate in synchronization with the same rotation direction, and the two second wire end holding portions 30 also rotate in synchronization with the rotation direction. It is the composition to do. And the state which rotates the other end part of the electric wire W by rotating the 2nd electric wire edge part holding | maintenance part 30 by the rotation drive of the motor 41, ie, it can rotate. It can be switched to the state. In this respect, the wire end support state switching unit 40 is configured as a wire end rotation driving unit that rotates the two second wire end holding units 30 in synchronization with each other. Further, by stopping the rotation of the motor 41, each second wire end holding portion 30 can be switched to a state in which the rotation of the other end of the wire W is restricted, that is, a rotation restricted state. Yes.

  The twisting rotation restricting unit 50 is configured to be able to define the rotation for twisting the two electric wires W between the first electric wire end holding unit 12 and the two second electric wire end holding units 30. . Here, the twisting rotation restricting portion 50 is configured such that a restricting rod 54 is erected on a plate-like support base 52. And by arranging the restriction rod 54 between the two electric wires W stretched between the first electric wire end holding portion 12 and the two second electric wire end holding portions 30, the two electric wires W The twist rotation is defined.

  Note that the twisting rotation restricting unit 50 only needs to be able to restrict the two electric wires W from rotating together for twisting, and the individual electric wires W rotate so as to be twisted around their own axes. There is no need to regulate. As such a twisting rotation restricting portion, in addition to the above configuration, a member in which a hole or a groove into which a plurality of electric wires W can be individually inserted may be formed.

  The rotation regulating unit driving unit 60 is configured to move the twisting rotation regulating unit 50 from the first wire end holding unit 12 toward the plurality of second wire end holding units 30. More specifically, the rotation restricting portion driving portion 60 can be driven to reciprocate along the rail member 62 disposed on the side of the base 11 and substantially parallel to the twisting axis X1. And a movable body 64 provided. The movable body 64 is cantilevered so that the support base 52 of the twist rotation restricting portion 50 can run at a lower position between the first wire end holding portion 12 and the plurality of second wire end holding portions 30. I support it. Various linear actuators such as a belt drive mechanism, a linear motor, and a ball screw mechanism can be used as a configuration in which the movable body 64 is driven to travel along the rail member 62. And by the reciprocating drive of the movable body 64, the structure which the control rod 54 reciprocates along the twist axis | shaft X1 between the 1st electric wire edge part holding | maintenance part 12 and the 2nd 2nd electric wire edge part holding | maintenance part 30; Has been.

  The control unit 70 is configured by a general computer having a CPU, a RAM, and a RAM, and in accordance with a software program stored in advance, the twist driving unit 20, the wire end support state switching unit 40, and the rotation regulating unit driving unit 60. The following processing for controlling the operation is performed.

  FIG. 5 is a flowchart showing the processing of the control unit 70.

  It is assumed that the rough winding rotation speed and the additional winding rotation speed are set in advance and stored in the RAM or the RAM.

  In this state, the operator holds one end portion of the two electric wires W on the first electric wire end holding portion 12 and the other end portion of the two electric wires W on the two second electric wire end portion holding portions 30. And the two electric wires W are disposed so as to be stretched between the first electric wire end holding portion 12 and the plurality of second electric wire end holding portions 30. In this state, the worker inputs twisting work start via the input unit.

  Then, in step S1, the control unit 70 gives a driving start command to the twist driving unit 20 to rotate the first electric wire end holding unit 12 at a constant rotation speed, and to the electric wire end supporting state switching unit 40. A drive start command is given to rotate the two second wire end holding portions 30 in synchronization with each other at a constant rotational speed, and a drive start command is also given to the rotation restricting portion drive portion 60 to twist the rotation restricting portion. 50 is moved from the first wire end holding portion 12 toward the second wire end holding portion 30.

  Thereby, twist rotation regulation is performed while rotating the 1st electric wire end part holding part 12 in the state where the other end parts of two electric wires W were rotated synchronously by two 2nd electric wire end part holding parts 30. A first twisting process is performed in which the portion 50 is moved from the first wire end holding portion 12 toward the second wire end holding portion 30. The twisting process of the two electric wires W at this processing stage may be called a rough winding process.

  Note that the rotation direction of the two second wire end holding portions 30 is the rotation of the first wire end holding portion 12 in order to suppress the torsional rotation of the individual wires W due to the rotation of the first wire end holding portion 12. It is set to the same direction. In addition, it is preferable that the rotation speed of the first wire end holding portion 12 and the rotation speed of the two second wire end holding portions 30 are substantially matched. Since the individual electric wires W are twisted and rotated to the same extent by the overall twisting rotation of the two electric wires W accompanying the rotation of the first electric wire end holding portion 12, in order to eliminate this, both rotational speeds It is because it is preferable to make these substantially the same. However, it is not essential that the rotational speeds are substantially the same. The rotation speed of the first wire end holding portion 12 and the rotation speed of the two second wire end holding portions 30 are, for example, when a servo motor or the like capable of controlling the rotation speed is used as the motors 21 and 41. Can be processed as a value set by the operator via the input unit.

  Further, the moving speed of the twisting rotation restricting portion 50 is such that when the twisting rotation speed of the first wire end holding portion 12 reaches the preset rough winding speed, the twisting rotation restricting portion 50 causes the second electric wire to move. It is preferable to set the same speed so as to reach the end holding portion 30. The moving speed is such that (the distance that the twist rotation restricting portion 50 can move between the first electric wire end holding portion 12 and the second electric wire end holding portion 30) (the first electric wire end holding portion). It can be calculated as a value divided by the time required for the section 12 to rotate at the number of rotations of the rough winding (= the number of rotations of the rough winding / the rotation speed of the first wire end holding section 12). Or may be processed as a value calculated by the control unit 70 in response to an input such as the rough rotation speed.

  After step S1, the control unit 70 determines in step S2 whether or not the rotational speed obtained by twisting and rotating the first wire end holding portion 12 has reached the rough winding rotational speed, and the determination result is NO. In this case, the determination process in step S2 is repeated. If the determination result is YES, the process proceeds to the next step S3.

  In step S2, when the twisting rotational speed exceeds the rough winding rotational speed, the process may proceed to the next step S3. In step S2, a time for the twisting rotational speed to reach the rough winding rotational speed is calculated based on the rotational speed and the rough winding rotational speed by the twist driving unit 20, and when the time reaches or passes, You may progress to step S3.

  In step S <b> 3, the control unit 70 gives a drive stop command to the twist drive unit 20 to stop the rotation of the first wire end holding unit 12, and gives a drive stop command to the wire end support state switching unit 40. The rotation of the two second wire end holding units 30 is stopped, and further, a drive stop command is given to the rotation restricting unit driving unit 60 to stop the twisting rotation restricting unit 50. Thereby, the first twisting process is completed. Thereafter, the process proceeds to the next step S4.

  In step S <b> 4, the control unit 70 gives a drive start command to the twist driving unit 20 to restart the rotation of the first electric wire end holding unit 12. Thereby, the 2nd twist process which rotates the 1st electric wire edge part holding | maintenance part 12 in the state which hold | maintained each other end part of the two electric wires W in the rotation control state by the two 2nd electric wire edge part holding | maintenance parts 30. Is executed. The twisting process of the two electric wires W at this processing stage may be referred to as a follow-up process.

  After step S4, in step S5, the control unit 70 determines whether or not the number of rotations obtained by twisting and rotating the first wire end holding part 12 (the number of rotations after restarting in step S4) has reached the additional rotation number. If the determination result is NO, the determination process of step S5 is repeated, and if the determination result is YES, the process proceeds to the next step S6.

  In step S5, when the twisting rotation speed exceeds the follow-up rotation speed, the process may proceed to next step S6. Further, in step S5, based on the rotational speed and the follow-up rotation speed by the twist drive unit 20, the time for the twist rotation speed to reach the follow-up rotation speed is calculated, and when the time reaches or passes The process may proceed to the next step S6. In step S5, the twisting rotational speed accumulated from the processing stage of step S1 may be compared with the sum of the rough winding rotational speed and the additional winding rotational speed.

  In step S <b> 6, the control unit 70 gives a drive stop command to the twist drive unit 20 to stop the rotation of the first wire end holding unit 12. Thereby, a 2nd twist process is complete | finished and a twisted electric wire is manufactured.

  Instead of the processing shown in steps S3 and S4, the rotation of the first wire end holding portion 12 is continued, the rotation of the two second wire end holding portions 30 is stopped, and the twist rotation restricting portion 50 is set. You may perform the process to stop.

  Moreover, the said rough winding rotation speed and follow-up winding rotation speed are values determined based on the electric wire W length, the twist pitch, etc. However, in consideration of the occurrence of a slight rewind after the completion of twisting, the additional winding rotational speed is a value obtained by adding an extra rotational speed to a value determined based on the wire W length, the twisting pitch, etc. It may be determined. Moreover, you may make it rotate the 1st electric wire edge part holding | maintenance part 12 extra after completion | finish of said step S6.

  The twisted electric wire manufactured as described above is also called a twisted wire, and is used for, for example, a wire harness in a vehicle, particularly a CAN communication circuit.

  FIG. 6 is a diagram showing a twisted state of two electric wires W during the first twisting process.

  That is, in the first twisting process, while the other end portions of the two electric wires W are rotated (see arrow R2), the one end portions of the two electric wires W are rotated (see arrow R1), and the regulation is performed. By moving the rod 54 (see arrow A), the twisting restriction portion of the two electric wires W moves from one end portion of the electric wire W toward the other end portion. In the initial stage, the restriction rod 54 is located near one end of the two electric wires W. Therefore, when one end portion of the two electric wires W is rotated, the two electric wires W are separated from the one end portion and the restriction rod 54. Are twisted together in a limited part between. When the restriction rod 54 moves to the other end side of the electric wire W, a portion where the electric wire W is not twisted appears in the portion near the restriction rod 54 and from the one end side of the electric wire W. Thus, a force for twisting the electric wire W acts. That is, with the movement of the regulation rod 54, the two wires W are mainly twisted in the vicinity of the regulation rod 54 and from the one end portion of the wire W. For this reason, the twist pitch of the two electric wires W can be relatively stabilized in the longitudinal direction of the electric wires W.

  Moreover, since the two electric wires W are not twisted together in the other end part side of the electric wire W rather than the control rod 54, each electric wire W can be freely rotated separately. For this reason, even if torsional rotation occurs in the individual electric wires W due to the rotation of one end portion of the two electric wires W, the individual electric wires W are solved by rotating on the other end side. For this reason, in the stage of the 1st twisting process, the twist rotation of each electric wire W and a twist wrinkle are eliminated.

  In particular, the respective ends of the two electric wires W are rotated in synchronization with the rotation of the two electric wires W. For this reason, with respect to the longitudinal direction of the two electric wires W and the two electric wires W, the twisting rotation and twisting elimination operation are stabilized, and the twisting pitch is stabilized.

  FIG. 7 is a diagram showing a twisted state of two electric wires W during the second twisting process.

  In the second twist rotation process, one end portions of the two electric wires W are rotated in a state where the other end portions of the two electric wires W are held in the rotation restricted state (see arrow R1). For this reason, the twisted wrinkles acting on the individual electric wires W are not eliminated, and the individual electric wires W are attached with the twisted wrinkles.

  FIG. 8 is a view showing a twisted electric wire according to Comparative Example 1, FIG. 9 is a view showing a twisted electric wire according to Comparative Example 2, and FIG. 10 is a view showing a twisted electric wire according to this embodiment. .

  In FIG. 8, the two electric wires W are twisted together by rotating one end portions of the two electric wires W in a state where the other end portions of the two electric wires W are held in the rotation restricted state. That is, it is an example in which only the second twisting process is performed.

  In FIG. 9, the two electric wires W are twisted together by rotating one end portions of the two electric wires W while holding the other end portions of the two electric wires W in a rotatable state. That is, it is an example in which only the first twisting process is performed.

  In FIG. 10, as described in the present embodiment, the two electric wires W are twisted by performing the first twisting process and the second twisting process.

  As shown in these drawings, it can be seen that a comparatively large gap S is generated between the electric wires W in the comparative example 1, and untwisting of the electric wires W is generated in the comparative example 2.

  On the other hand, in the twisted electric wire which concerns on this embodiment, it turns out that the clearance gap between the electric wires W is comparatively small, and the unwinding of the twisting of the electric wires W does not arise easily.

  As described above, according to the twisted electric wire manufacturing apparatus 10, the twisted electric wire manufacturing method, and the twisted electric wire according to the present embodiment, the first ends of the two electric wires W are held rotatably. In order to rotate the wire end holding portion 12, the two wires W are twisted together so as to eliminate the twisted wrinkles of each wire W. For this reason, the waviness | corrugation which each electric wire W disturbs is suppressed, and the clearance gap between the electric wires W can be made small. Thereby, impedance control of the twisted wire, in particular, impedance reduction can be achieved. At this time, in order to move the twist rotation restricting portion 50 from the first electric wire end holding portion 12 toward the second electric wire end holding portion 30, the twisting position is restricted to some extent and the twist pitch is stabilized. Twist rotation of the electric wire W is effectively eliminated at the untwisted portion.

  Further, during this process, the other end portions of the two electric wires W are rotated in synchronization with each other, so that the rotation of the other end portions of the individual electric wires W with respect to the rotation for the twisting is stabilized, and the twisting pitch is increased. Stabilize.

  Moreover, in order to rotate the 1st electric wire edge part holding | maintenance part 12 in the state which hold | maintained each other end part of the two electric wires W in the rotation control state after this, each electric wire W is firmly attached with a twisted hook. Unwinding of the wire W is prevented.

  Conventionally, in order to prevent unwinding of the wire W, it has been necessary to separately treat the end of the wire W with a tape or the like, but in this embodiment, such treatment is omitted. This also contributes to the simplification and cost reduction of twisted wires.

{Modification}
In addition, in the said embodiment, although the example which twists two electric wires W was demonstrated, it is applicable also when twisting three or more electric wires.

  Moreover, although the said embodiment demonstrated in the 1st twist process the example which rotates each other end part of the two electric wires W, it is not necessarily required. In the first twisting process, the other end portions of the two electric wires W may be rotatably supported. For example, the second wire end holding portion 30 may be switched between a state where it can be rotated by an electromagnetic actuator or the like and a state where the rotation is restricted. That is, when the other end portions of the plurality of electric wires W are respectively rotatable, the other end portions of the plurality of electric wires W are allowed to rotate in an attempt to eliminate their torsional rotation, and driving of a motor or the like. This includes both cases where the other ends of the plurality of electric wires W are to be rotated.

  In addition, each structure demonstrated in the said embodiment and each modification can be suitably combined unless it mutually contradicts.

It is a schematic side view which shows the manufacturing apparatus of the twisted electric wire which concerns on embodiment. It is a schematic plan view which shows the manufacturing apparatus of a twisted electric wire same as the above. FIG. 3 is a schematic view taken along line III-III in FIG. 1. FIG. 4 is a schematic view taken along line IV-IV in FIG. 1. It is a flowchart which shows a twisting process. It is a figure which shows the twisted state of two electric wires in the 1st twisting process. It is a figure which shows the twisted state of the two electric wires in the 2nd twisting process. 5 is a view showing a stranded wire according to Comparative Example 1. FIG. It is a figure which shows the twisted electric wire which concerns on the comparative example 2. FIG. It is a figure which shows the twisted electric wire which concerns on this embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Twisted wire manufacturing apparatus 12 1st electric wire edge part holding part 20 Twisting drive part 30 2nd electric wire edge part holding part 40 Electric wire edge part support state switching part 50 Twist rotation restriction part 60 Rotation restriction part drive part 70 Control Unit W Electric wire

Claims (5)

A twisted wire manufacturing device that twists a plurality of wires,
A first wire end holding portion for holding one end of a plurality of wires;
A plurality of second wire end holding portions that respectively hold the ends of the plurality of wires;
A twist driving unit that rotates the first electric wire end holding portion so as to twist the plurality of electric wires between the first electric wire end holding portion and the plurality of second electric wire end holding portions;
A wire end support state switching unit that switches the plurality of second wire end holding portions between a rotatable state and a rotation restricted state so as to hold the ends of the plurality of wires in a rotatable state and a rotation restricted state, respectively. When,
A twist rotation restricting portion for restricting rotation for twisting of the plurality of wires between the first wire end holding portion and the plurality of second wire end holding portions;
A rotation regulating unit driving unit that moves the twisting rotation regulating unit from the first electric wire end holding unit toward the plurality of second electric wire end holding units;
While rotating the first wire end holding portion in a state where the other end portions of the plurality of wires are rotatably held by the plurality of second wire end holding portions, the twist rotation restricting portion is After the first twisting process of moving from the first wire end holding portion toward the plurality of second wire end holding portions, the plurality of second electric wire end holding portions can be used for each of the plurality of electric wires. A control unit that executes a second twisting process for rotating the first electric wire end holding unit in a state in which the end is held in a rotation restricted state;
An apparatus for manufacturing a twisted electric wire. It is a manufacturing apparatus of the twisted electric wire according to claim 1,
The wire end support state switching unit has a wire end rotation drive unit that rotates the plurality of second wire end holding units in synchronization with each other,
The said control part is a manufacturing apparatus of the twisted electric wire which rotates each other end part of these electric wires by the drive of the said electric wire edge part rotation drive part during the said 1st twisting process. A method for producing a twisted electric wire by twisting a plurality of electric wires,
(A) a step of holding one end and the other end of the plurality of electric wires;
(B) In a state where the other end portions of the plurality of electric wires are rotatably held, the one end portions of the plurality of electric wires are rotated with respect to the other end portions of the plurality of electric wires. A step of moving a portion for regulating twisting from one end of the plurality of electric wires toward the other end; and
(C) a step of rotating one end of the plurality of electric wires with respect to the other end of the plurality of electric wires in a state in which the other end of each of the plurality of electric wires is held in a rotation restricted state;
The manufacturing method of the twisted electric wire provided with. It is a manufacturing method of the twisted electric wire according to claim 3,
In the step (b), a method for producing a twisted electric wire, wherein the other end portions of the plurality of electric wires are rotated in synchronization with the rotation of the one end portions of the plurality of electric wires.   The twisted electric wire manufactured by the manufacturing method of the twisted electric wire of Claim 3 or Claim 4.

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