JPWO2015190583A1 - Twist wire manufacturing apparatus and twist wire manufacturing method - Google Patents

Abstract

The twisted wire manufacturing apparatus (1) grips one end of the plurality of electric wires (W1, W2) and is fixed to the wire (6) straddling the pulley (5a), and the plurality of electric wires A second gripping part (15) gripping the other end and fixed in position with respect to the pulley; a weight for biasing the wire in a first direction in which the first gripping part is separated from the second gripping part; and a weight A support base (12) for supporting, twisting the plurality of electric wires by rotating the second gripping portion in a state where the support base moves the weight until the wire cannot move in the first direction, Manufacture twisted wire.

Description

  The present invention relates to a manufacturing apparatus for manufacturing a twisted wire in which a plurality of electric wires are twisted together, and a manufacturing method for manufacturing a twisted wire.

  Conventionally, the purpose is to reduce the influence (noise caused by external magnetic flux) that the signal transmitted through the electric wire receives from the outside, and to reduce the influence of the signal to the outside (magnetic flux release to the outside). The twist line has been proposed. As shown in FIGS. 13A and 13B, the twisted wire Wt is generally manufactured by twisting together a plurality of (two in this example) electric wires W1 and W2.

  For example, one conventional twisted wire manufacturing device (hereinafter referred to as “conventional device”) forms a wire pair by arranging two wires before being twisted substantially in parallel, and makes one end of the wire pair unrotatable. The twisted wire is manufactured by fixing and rotating the other end around the axis of the electric wire pair (see, for example, Patent Document 1 and Patent Document 2).

  FIG. 12 is a schematic perspective view of an apparatus for manufacturing a twisted wire based on the same principle as that of a conventional apparatus. The apparatus 100 shown in FIG. 12 includes two mechanisms 101 and 102 that manufacture twisted wires by twisting two electric wires W1 and W2 (wire pairs). This apparatus 100 is designed to simultaneously produce two twist lines Wt having substantially the same length. Specifically, the mechanisms 101 and 102 include a common rail 100A, one end of each wire pair, and a rotation side chuck 100B that can rotate around the axis of each wire pair, and a common motor that rotates the rotation side chuck 100B. 100C, fixed side chuck 100D that holds the other end of each wire pair and is fixed so as not to rotate, tension applying unit 100E that applies tension to each wire pair via the fixed side chuck 100D, and tension applying unit 100E are fixed A common support base 100F and a base 100G for supporting them are provided.

  The apparatus 100 of FIG. 12 rotates the rotation-side chuck 100B in a state where tension is applied to each wire pair, and as shown in FIG. 13C, the wires W1 and W2 forming the wire pair (in the drawing) Then, A and B) are rotated so as to exchange their positions, and the electric wires W1 and W2 are twisted together. Specifically, one rotation of the rotation-side chuck 100B corresponds to the steps (1) to (5) in FIG. 13C, and the rotation of the rotation-side chuck 100B makes two rotations so that the twist line in FIG. Wt is formed.

  Note that the length Lp shown in FIG. 13B is the length of the twisted wire Wt for the wire pair to rotate 360 degrees around its axis (in other words, (1) to (5) in FIG. 13C). This is a length corresponding to the process (2), and is referred to as “pitch length” of the twist line Wt. Further, the length Lt shown in FIG. 13B is the length of the electric wire portion excluding the terminal portions at both ends of the twisted wire Wt, and is referred to as the “full length” (or simply “length”) of the twisted wire Wt. Is done.

Japanese Unexamined Patent Publication No. 2007-220378 Japanese Unexamined Patent Publication No. 2009-170294

  The apparatus 100 (and the conventional apparatus) shown in FIG. 12 always maintains the state in which the wire pair W1, W2 is pulled in the length direction (a state where tensile stress is applied) from the viewpoint of appropriately twisting the wires W1, W2. However, the rotation side chuck 100B is rotated. This is because if the rotation-side chuck 100B is rotated while the electric wires W1 and W2 are slack, there may be a problem such as the pitch length Lp of the twist wire being non-uniform.

  However, in order to keep the wire pair W1, W2 pulled in the length direction, the length of the base 100G is set to be equal to or longer than the length of the wires W1, W2 (and eventually the target length of the twisted wire). There is a need to. Therefore, the apparatus 100 becomes larger as the target length of the twist line becomes longer. In addition, it is necessary to change the position of the fixed chuck 100D in accordance with the change in the target length of the twist line, which complicates the process of manufacturing the twist line.

  The present invention has been made in view of the above circumstances, and its purpose is that it can be made smaller than conventional devices, and even if the twisted wire target length is changed, the twisted wire manufacturing process An object of the present invention is to provide a twisted wire manufacturing apparatus and a twisted wire manufacturing method capable of preventing complication as much as possible.

In order to achieve the above object, the twisted wire manufacturing apparatus according to the present invention has the following features (1) to (3), and the twisted wire manufacturing method according to the present invention has the following features (4) and (5). have.
(1)
A twisted wire manufacturing apparatus for manufacturing a twisted wire in which a plurality of electric wires are twisted together,
A first gripping portion that grips one end of the plurality of electric wires and is fixed to one side of the wire straddling the pulley;
A second gripping portion that is rotatable so as to grip the other end of the plurality of electric wires and twist the plurality of electric wires, and fixed so that the position with respect to the pulley is unchanged;
A weight that is fixed to the other side of the wire across the pulley and that urges the wire in a first direction in which the first gripping portion is separated from the second gripping portion by gravity acting on the weight. When,
A support base for supporting the weight, wherein the wire is supported in the first direction or in the second direction in which the first gripping part approaches the second gripping part while supporting the weight against the biasing force. A support base capable of moving the weight so as to move
With
The second gripping part is
The plurality of electric wires are twisted by rotating the support base with the weight moved until the wire urged in the first direction by the weight cannot move in the first direction. ,
It is a twisted wire manufacturing device.
(2)
The twisted wire manufacturing apparatus according to (1) above,
A sensor capable of detecting whether the weight and the support are in contact with each other or separated from each other;
The second gripping part is
If the position of the weight at the time when the detection result of the sensor changes from contact to separation matches the target position based on the target length of the twisted wire, it begins to twist the plurality of wires.
It is a twisted wire manufacturing device.
(3)
The twisted wire manufacturing apparatus according to (1) or (2) above,
A plurality of member sets including the first gripping part, the second gripping part, the wire and the weight;
The plurality of weights belonging to the plurality of member sets are supported by a single support base.
It is a twisted wire manufacturing device.
(4)
A first gripping portion that holds one end of the plurality of electric wires and is fixed to one side of the wire straddling the pulley;
A second gripping portion that is rotatable so as to grip the other end of the plurality of electric wires and twist the plurality of electric wires, and fixed so that the position with respect to the pulley is unchanged;
A weight that is fixed to the other side of the wire across the pulley and that urges the wire in a first direction in which the first gripping portion is separated from the second gripping portion by gravity acting on the weight. When,
A support base for supporting the weight, wherein the wire is supported in the first direction or in the second direction in which the first gripping part approaches the second gripping part while supporting the weight against the biasing force. A support base capable of moving the weight so as to move
A twisted wire manufacturing method for manufacturing a twisted wire in which the plurality of electric wires are twisted together,
A first step of moving the wire in the second direction together with the weight by the support until the distance between the first gripping portion and the second gripping portion is shorter than a target length of the twist line;
A second step of attaching the plurality of members to the first grip portion and the second grip portion;

A third step of moving the wire with the weight by the support until the wire biased in the first direction by the weight cannot move in the first direction;
A fourth step of rotating the second gripping portion and twisting the plurality of electric wires;
Including twisted wire manufacturing equipment.
(5)
The twisted wire manufacturing method according to (4) above,
Further using a sensor capable of detecting whether the weight and the support are in contact with each other or separated from each other,
The fourth step is started only when the position of the weight when the detection result of the sensor changes from contact to separation matches the target position based on the target length of the twist line.
It must be a twisted wire manufacturing method.

  According to the twisted wire manufacturing apparatus having the configuration of (1) above, the plurality of electric wires attached to the first gripping part and the second gripping part are weighted until the wire cannot move in the first direction. In a state of being moved (that is, a state where a plurality of electric wires are stretched between the first gripping portion and the second gripping portion without slack), the second gripping portion is twisted. At this time, arrange each member so that the direction connecting the first gripping part and the second gripping part (for example, the direction in which the frame extends) is inclined so as to be away from the installation surface (floor surface) of the apparatus. In other words, if the device has a vertically-arranged structure, the installation space for the device can be reduced as compared with the conventional device. Furthermore, since the plurality of electric wires are automatically stretched by the gravity acting on the weight, the position of the portion (second holding portion in the present invention) that holds the plurality of electric wires can be individually determined even if the target length of the twisted wire changes. There is no need to set to. As a result, an arbitrary target length can be accommodated without enlarging the apparatus. Therefore, this twist line manufacturing apparatus can be made smaller than the conventional apparatus, and even if the target length of the twist line is changed, the twist line manufacturing process can be prevented as much as possible.

  According to the twisted wire manufacturing apparatus having the configuration of (2) above, when the position of the weight when the detection result of the sensor changes from contact to separation does not coincide with the target position based on the target length of the twisted wire (for example, When a plurality of electric wires are entangled, rotation by the second gripping portion can be prohibited. As a result, it is possible to prevent a twisted wire with entanglement or the like from being manufactured (before actually twisting a plurality of electric wires).

  According to the twisted wire manufacturing apparatus having the configuration of (3) above, since a plurality of member sets share a single support, the apparatus can be enlarged even when a plurality of member sets are provided. As long as it can be prevented. Moreover, since the target length of the twist line can be made different in each of the plurality of member sets, twist wires of various lengths can be manufactured using a single device.

  According to the twisted wire manufacturing method having the configuration of (4) above, the manufacturing apparatus can be made smaller than the conventional device as in the above (1), and the twisted wire can be twisted even if the target length of the twisted wire is changed. The complication of the wire manufacturing process can be prevented as much as possible.

  According to the twisted wire manufacturing method having the configuration of (5) above, it is possible to prevent (before actually twisting a plurality of electric wires) that twisted wires having entanglement or the like are manufactured as in (2) above. it can.

  According to the twisted wire manufacturing apparatus and the twisted wire manufacturing method of the present invention, the device can be made smaller than the conventional device, and the twisted wire manufacturing process can be complicated even if the target length of the twisted wire is changed. It is possible to prevent as long as possible.

FIG. 1 is a schematic perspective view showing a twisted wire manufacturing apparatus according to an embodiment of the present invention. FIG. 2 is a side view of the twisted wire manufacturing apparatus shown in FIG. 3 is a perspective view of a slide plate of the twisted wire manufacturing apparatus shown in FIG. FIG. 4 is a side view of the weight and the support base of the twisted wire manufacturing apparatus shown in FIG. FIG. 5 is a perspective view of the support base of the twisted wire manufacturing apparatus shown in FIG. 6 is a perspective view of a second gripping portion of the twisted wire manufacturing apparatus shown in FIG. FIG. 7 is a cross-sectional view of the second gripping portion shown in FIG. FIG. 8 (1) to FIG. 8 (4) are operation diagrams illustrating the first half of the method for manufacturing a twisted wire using the twisted wire manufacturing apparatus shown in FIG. FIG. 9 (5) to FIG. 9 (8) are operation diagrams showing the latter half of the process following FIG. FIG. 10 is a perspective view of a modification of the second gripping portion of the twisted wire manufacturing apparatus shown in FIG. FIG. 11 is a cross-sectional view of the second gripping portion shown in FIG. FIG. 12 is a diagram for explaining a conventional twisted wire manufacturing apparatus. FIG. 13A to FIG. 13C are diagrams illustrating the principle for manufacturing a twisted wire.

  Hereinafter, a twisted wire manufacturing apparatus (hereinafter referred to as “apparatus 1”) according to an embodiment of the present invention will be described with reference to FIGS.

<Main configuration>
As shown in FIGS. 1 to 7, the apparatus 1 includes a frame 2, a long frame 2 a supported by the frame 2 so as to be slightly inclined with respect to the installation surface (floor surface), and an opening of the frame 2 a. 3. Pulley shaft 4a, pulley shaft 4b, pulley shaft 4a, pulleys 5a and 5b fixed to the pulley shaft 4b, a wire 6 that goes around the pulleys 5a and 5b, and a slide fixed to the wire 6 Plate 7, first grip 8 fixed to slide plate 7, weight 9 fixed to wire 6, pulley shaft 4a, toothed pulleys 10a and 10b fixed to both ends of pulley shaft 4b, toothed pulley 10a, To detect whether the toothed belt 11 that circulates 10b, the support base 12 that supports the weight 9, the motor 13 for the support base that moves the support base 12, and the weight 9 and the support base 12 are in contact with or separated from each other. The limit switch 14, the second gripping part 15 fixed so that the position with respect to the pulleys 5a and 5b is unchanged, the base 16 to which the second gripping part 15 is fixed, and the motor for rotationally driving the second gripping part 15 17, pulleys 18 and 19 and a belt 20 for transmitting the rotation of the motor 17 to the second grip 15.

<Frame base 2>
The frame base 2 is a member corresponding to the base 100G in the conventional apparatus 100 shown in FIG. Since the base 100G of FIG. 12 was placed horizontally with respect to the installation surface (floor surface), a large installation space was required. On the other hand, since the frame 2 of the apparatus 1 is inclined with respect to the installation surface (floor surface), the installation space can be reduced.

  The frame 2a has four openings 3 extending in the vertical direction. Since one twisted wire is manufactured in each of the four openings 3, four twisted wires can be manufactured simultaneously in the frame 2 of the apparatus 1. Furthermore, even if the target lengths of the four twist lines are different, the apparatus 1 can manufacture the twist lines simultaneously (details will be described later). A pulley shaft 4 a and a pulley shaft 4 b are rotatably supported on the upper and lower portions on the back side of the frame base 2. Pulleys 5a and 5b are rotatably supported at positions corresponding to the respective openings 3 on the pulley shaft 4a and the pulley shaft 4b.

<Wire 6>
A wire 6 is wound around each of the pulleys 5a and 5b. One end of the wire 6 that goes around the pulley 5 a is attached to the upper portion of the slide plate 7, and the other end is attached to the upper portion of the weight 9. One end of the wire 6 that goes around the pulley 5 b is attached to the lower part of the slide plate 7, and the other end is attached to the lower part of the weight 9. Thus, the wire 6 forms a closed loop through the slide plate 7 and the weight 9, and the weight 9 is prevented from shaking by this closed loop.

<Slide plate 7>
Wires 6 are respectively locked at the upper and lower positions of the slide plate 7. The slide plate 7 moves with the movement of the wire 6 (up and down movement in the figure) using the long portion defining the opening 3 of the frame 2a as a guide. In addition, as shown in FIG. 3, after crimping round crimp terminal 6T, 6T provided in the edge part of the wire 6 to the attachment hole provided in the up-and-down position of the slide board 7, the wire 6 is the round crimp terminal. 6T and 6T are fixed to the slide plate 7 by fixing them with bolts 7B.

<First gripping portion 8>
As shown in FIG. 3, the slide plate 7 is provided with a first gripping portion 8 that collectively grips one end (upper end portion in the drawing) of the plurality of electric wires W1, W2. The 1st holding | grip part 8 clamps the upper end of several electric wire W1, W2 between clamping piece 8a, 8b. The first grip 8 only holds the electric wire, and unlike the second grip 15, the first grip 8 does not rotate. It is the second gripping part 15 that rotates and twists the plurality of electric wires W1, W2. Therefore, the 1st holding | grip part 8 is a member corresponded to the fixed side chuck | zipper 100D in the conventional apparatus 100 (FIG. 12).

<Weight 9>
As shown in FIG. 4, a weight 9 filled with a metal ball or the like in a container having a hollow portion is engaged with the portion located on the back surface of the wire 6. The weight 9 is designed to be larger than the weight of the slide plate 7. Therefore, when the weight 9 is placed on (in contact with) the support base 12, the support base 12 is lowered, and the slide plate 7 attached to the wire 6 that is circulated around the pulleys 5a and 5b is raised. .

  When the above-described container-type weight 9 cannot withstand the load when twisting the plurality of electric wires W1, W2, the container is accommodated in a weight holder surrounded by a sturdy material, and the weight holder is connected to the wire 6 Can be configured to connect to.

<Toothed belt 11>
Toothed pulleys 10a and 10b are fixed to both ends of the pulley shaft 4a and the pulley shaft 4b of the pulleys 5a and 5b. A toothed belt 11 is wound around each of the toothed pulleys 10a and 10b to form a closed loop. As shown in FIG. 5, a long support base 12 is fixed to the toothed belt 11.

<Support stand 12>
As shown in FIG. 1, the support base 12 is fixed horizontally with respect to the frame 2a. As shown in FIG. 5, the support base 12 has a receiving base 12 a with which the weight 9 comes into contact. The pulley shaft 4b positioned below the support table 12 is linked to the drive shaft of the support table motor 13 via a belt 13b. Therefore, the support base 12 is raised or lowered by the rotation of the support base motor 13. The cradle 12a has an elongated horizontal plate shape extending in the width direction of the device 1, and can support four weights 9 by the single cradle 12a.

<Limit switch 14>
As shown in FIG. 5, a limit switch 14 is provided on the cradle 12a. When the weight 9 is in contact with the cradle 12a, the pin 14P is pushed by the weight of the weight 9, and the limit switch 14 is turned off. On the other hand, when the weight 9 is separated from the cradle 12a, the pin 14P protrudes again by a spring built in the limit switch 14 and is turned on from the limit switch 14.

  When the limit switch 14 is on, the motor 17 connected to the limit switch 14 rotates, the second gripping portion 15 rotates, and the wire twisting operation is started.

<Second gripping part 15>
A second grip 15 that holds the lower ends of the plurality of electric wires W1 and W2 at a time is fixed to the frame 2 located below the frame 2a. As the second gripping portion 15 rotates, the electric wire being held is twisted to form a twisted wire. Therefore, the 2nd holding | grip part 15 is a member equivalent to the rotation side chuck | zipper 100B in the conventional apparatus 100 (FIG. 12). The 2nd holding | grip part 15 clamps the lower end of several electric wire W1, W2 between clamping piece 15a, 15b. The second grip 15 is rotatably disposed on the base 16. On the other hand, a motor 17 is disposed on the base 16.

<Rotation mechanism of the second gripping part 15>
As shown in FIG. 7, the second gripping portion 15 has a belt (tooth) on a pulley (gear) 18 fixed to the end of the rotating shaft 15 c and a pulley (gear) 19 fixed on the drive shaft 17 a of the motor 17. When the belt (attached belt) 20 is wound around, it is rotated by the power of the motor 17. When the second gripping portion 15 rotates, the electric wires W1 and W2 sandwiched between the second gripping portions 15 are twisted to form a twisted wire Wt.

<Method for producing twisted wire>
Hereinafter, steps (1) to (8) for manufacturing a twisted wire using the apparatus 1 will be described in more detail with reference to FIGS. 8 and 9.

(1)
In the state of (1) in the figure, since the weight 9 is at the lowest position, the slide plate 7 having the first gripping portion 8 for gripping the electric wire is on the upper side. Therefore, the support table 12 on which the weight 9 is placed is raised by driving the support table motor 13 and the slide plate 7 on the opposite side is lowered.

(2)
When the slide plate 7 is lowered to the lowest position at which the operator can easily work, the first gripping portion 8 grips the ends of the electric wires W1, W2. Further, at this time, the second gripping portion 15 can also grip the other ends of the electric wires W1, W2. In the conventional apparatus 100 (FIG. 12), the operator who has gripped the electric wire by the fixed side chuck 100D has to move from the fixed side chuck 100D to the rotating side chuck 100B. Electric wires can be attached to both the first gripping portion 8 on the fixed side and the second gripping portion 15 on the rotation side at the same place.

(3)
Since one end of the two electric wires W1 and W2 is held by the first holding portion 8 and the other end is held by the second holding portion 15 and the middle portion of the electric wire is slack, the slide plate 7 is then raised.

(4)
Specifically, the support table motor 13 is rotated in the reverse direction, the support table 12 is lowered, the weight 9 is lowered, and the slide plate 7 is raised. At this time, the 1st holding part 8 attached to the slide board 7 also raises. Eventually, the two electric wires W <b> 1 and W <b> 2 are stretched between the first grip portion 8 and the second grip portion 15. In this state, the weight 9 cannot be lowered any further.

(5)
Thereafter, when the support base 12 is lowered, the weight 9 is separated from the support base 12, and the slide plate 7 (and thus the first gripping portion 8) is held by the weight of the weight 9 via the pulley 5a. When the support base 12 is separated from the weight 9, the limit switch 14 (FIG. 5) is turned on, the motor 17 starts to rotate, and the second gripping part 15 starts twisting the electric wire. One twist is formed each time the second gripping portion 15 rotates, and one twist is formed in each electric wire. Therefore, the pitch length becomes smaller as the second gripping portion 15 rotates. In the example shown in (5) in the figure, a twist line Wh on the way to the twist line Wt of the target pitch length is shown. Compared with the electric wires W1 and W2 of (4) in the figure, the total length is shortened by the increase in the number of twists, and the first grip 8 (slide plate 7) is lowered.

(6)
When the twist line Wt having the target pitch length is obtained, the rotation of the second grip 15 is stopped. Note that the target rotation speed of the second gripping portion 15 corresponding to the target pitch length can be calculated in advance from the lengths of the electric wires W1 and W2 and the target pitch length. Therefore, the target rotational speed may be stored in the control section of the motor 17 that rotates the second gripping section 15. Then, the second gripper 15 is rotated while comparing the output value of the encoder that detects the rotational speed of the motor 17 with the target rotational speed, and when the actual rotational speed matches the target rotational speed, the second gripper 15 End the rotation.

(7)
After the twist line Wt having the target pitch length is formed, the gripping of the first gripping part 8 and the gripping of the second gripping part 15 of the device 1 are released, and the twisted line Wt is taken out from the device 1. Since the twisted wire Wt is twisted in addition to twisting, the twisted wire Wt is not loosened and unwound.

(8)
Since the electric wire is removed from the first gripping portion 8 of the apparatus 1, the weight 9 heavier than the slide plate 7 is lowered, and the slide plate 7 is raised. And if the weight 9 is effective to the lowest position, a series of twist wire manufacturing steps will be completed. This state (8) has returned to the first state (1). When manufacturing the next twisted wire, each step may be performed again from (1).

<Simultaneous production of twisted wires with different lengths>
In the apparatus 1 shown in FIG. 1, twisting of electric wires having different lengths in four systems can be simultaneously performed.

  Specifically, in FIG. 1, the apparatus 1 includes an opening 3, pulley shafts 4 a and 4 b, pulleys 5 a and 5 b, a slide plate 7, a first gripping portion 8, a weight 9, a second gripping portion 15, and a motor 17. Four configured member sets are provided in parallel. On the other hand, the toothed pulleys 10a and 10b, the toothed belt 11, the support base 12, and the support base motor 13 are provided one by one, and are shared by the four member sets.

  Therefore, the twist wire manufacturing steps (1) to (8) by the apparatus 1 are performed simultaneously for each system. And the system | strain with the shortest target length of a twist line | wire arrives at a process (4) first. And only this system moves to a process (5) and starts manufacture of a twist line. On the other hand, since the other three electric wires W1 and W2 are still loose, the weight 9 continues to descend while being in contact with the support base 12.

  Thereafter, the system with the next shortest target length of the twisted wire reaches the step (4), and the production of the twisted wire is started. Since the other two electric wires W1 and W2 are still loose, the weight 9 continues to descend while being in contact with the support 12. And the system | strain with the next shortest target length of a twist line arrives at a process (4), and manufacture of a twist line is started. Furthermore, after that, the system with the longest target length of the twisted wire reaches the step (4), and the production of the twisted wire is started.

  In this way, twist lines are manufactured sequentially in all series, and twist lines Wt having different target lengths are manufactured in each system. Then, the production of the twisted wire is finished from the system in which the second gripping part 15 has reached the target rotational speed. As a result, the apparatus 1 can simultaneously perform twisting processing of electric wires having different lengths in four systems.

<RR twist (dense twist)>
As shown in FIG. 13C, the second gripping portion 15 twists the plurality of electric wires W1, W2 once per twist. However, the second grip 15 may be configured to twist each of the plurality of wires before twisting the plurality of wires, and then twist the plurality of wires together. This technique is generally called RR twist (or dense twist). Twist processing by RR twist has an effect of maintaining a reliable twist state in which untwisting hardly occurs compared to the twist processing shown in FIG.

  The second grip 30 shown in FIG. 10 has a structure for performing this RR twist. The second gripping unit 30 has an internal gear 32 fixedly installed on the substrate 31, a disk 33 is rotatably supported therein, and the two small gears 34 are rotatably supported on the disk 33, and the small gear 34 is It is configured to mesh with the internal gear 32 and attach the second grip 30 to the small gear 34.

  As shown in FIG. 11, a pulley (gear) 35 is fixed to the shaft 33 a of the disk 33. Further, a pulley (gear) 37 is also fixed to the shaft 36 a of the motor 36. A toothed belt 28 is wound around the pulleys 35 and 37. Therefore, when the disk 33 is rotated by the motor 36 via the pulley 37, the belt 38, and the pulley 35, the small gears 34 are rotated. Thereby, the electric wires W1 and W2 are twisted. Then, the 2nd holding part 15 is revolved and electric wire W1, W2 is twisted.

<Replacement between the first gripping portion 8 and the second gripping portion 15>
The twist line control device of the present invention replaces the first gripping portion 8 and the second gripping portion 15 of the device 1, attaches the second gripping portion 15 that performs twisting to the wire 6, and holds the first gripping portion on the fixed side. The part 8 may be configured to be attached.

<U-turn twist using two systems>
The electric wire stretched between the first gripping portion 8 and the second gripping portion 15 of one system is twisted by the rotation of the second gripping portion 15. In the so-called U-turn twisting, two systems that are adjacent to each other among the four systems are used. In this case, the electric wire causes the second gripping portion 15 and the adjacent second gripping portion 15 to grip one end and the other end of the electric wire, respectively, and the middle portion of the electric wire is erected at the center of the plate of the first gripping portion 8. The electric wire is stretched by straddling the pin and pulling the pin upward by the weight 9.

  If the two second gripping portions 15 are rotated in the same direction in this state, since the tension is applied to the electric wire, the rotation of the twist of the electric wire due to the rotation of the one second gripping portion 15 causes the pin to rotate. It does not get over to the other second grip 15. The pin is provided in the vicinity of one system of the first gripping portion 8 (that is, because the pin is not located on the center bisector between the two second gripping portions 15) and one of the second gripping portions. The distance from the portion 15 is different from the distance from the pin to the other second gripping portion 15. Therefore, the rotation speed of the second grip 15 is adjusted to be different so that the pitch lengths of the two twist lines are equal. In this way, if two sets of electric wires are twisted separately from both sides using two second gripping parts (motors) and a pair of electric wires are twisted (U-turn twisting), the production time of twisted wire by one system Can produce a twisted wire twice as long.

Here, the features of the embodiments of the twisted wire manufacturing apparatus and the twisted wire manufacturing method according to the present invention described above are briefly summarized in the following (1) to (5).
(1)
A twisted wire manufacturing apparatus (1) for manufacturing a twisted wire (Wt) in which a plurality of electric wires (W1, W2) are twisted together,
A first gripping portion (8) that grips one end of the plurality of electric wires and is fixed to one side of the wire (6) straddling the pulley (5a);
A second gripping portion (15) which is rotatable so as to grip the other end of the plurality of electric wires and twist the plurality of electric wires, and is fixed so that its position relative to the pulley (5a) is unchanged. ,
A weight (9) fixed to the other side of the wire straddling the pulley, wherein the first gripping part (8) is separated from the second gripping part (15) by gravity acting on the weight. A weight for biasing the wire (6) in the direction;
A support base (12) for supporting the weight, wherein the first orientation or the first gripping portion approaches the second gripping portion while supporting the weight (9) against the biasing force. A support base capable of moving the weight so as to move the wire (6) in two directions;
With
The second gripping part (15)
By rotating the support base (12) with the weight moved until the wire (6) urged in the first direction by the weight cannot move in the first direction, Twisting the plurality of wires,
Twisted wire manufacturing equipment.
(2)
The twisted wire manufacturing apparatus according to (1) above,
A sensor (limit switch 14) capable of detecting whether the weight and the support base are in contact with or separated from each other;
The second gripping part (15)
If the position of the weight at the time when the detection result of the sensor changes from contact to separation matches the target position based on the target length of the twisted wire, it begins to twist the plurality of wires.
Twisted wire manufacturing equipment.
(3)
The twisted wire manufacturing apparatus according to (1) or (2) above,
A plurality of member sets including the first gripping portion (8), the second gripping portion (15), the wire (6) and the weight (9);
The plurality of weights belonging to the plurality of member sets are supported by a single support base (12).
Twisted wire manufacturing equipment.
(4)
A first gripping part (8) fixed to one side of the wire (6) straddling the pulley (5a) while holding one end of the plurality of electric wires,
A second gripping portion (15) which is rotatable so as to grip the other end of the plurality of electric wires and twist the plurality of electric wires, and is fixed so that its position relative to the pulley (5a) is unchanged. ,
A weight (9) fixed to the other side of the wire straddling the pulley (5a), and the first gripping portion (8) is separated from the second gripping portion (15) by gravity acting on the weight. A weight for biasing the wire (6) in a first direction;
A support base (12) for supporting the weight, wherein the first orientation or the first gripping portion approaches the second gripping portion while supporting the weight (9) against the biasing force. A support base (12) capable of moving the weight so as to move the wire (6) in two directions;
A twisted wire manufacturing method for manufacturing a twisted wire in which the plurality of electric wires are twisted together,
A first step of moving the wire in the second direction together with the weight by the support until the distance between the first gripping portion and the second gripping portion becomes shorter than a target length of the twist line (FIG. 8 (1) to (2)),
A second step of attaching the plurality of members to the first gripping part and the second gripping part ((3) of FIG. 8);
The third step of moving the wire together with the weight by the support stand until the wire urged in the first direction by the weight cannot move in the first direction ((4) in FIG. 8). When,
A fourth step ((5) to (6) in FIG. 8) of rotating the second gripping portion and twisting the plurality of electric wires;
Including twisted wire manufacturing equipment.
(5)
The twisted wire manufacturing method according to (4) above,
Further using a sensor (14) capable of detecting whether the weight and the support are in contact or separated;
The fourth step is started only when the position of the weight when the detection result of the sensor changes from contact to separation matches the target position based on the target length of the twist line.
Twisted wire manufacturing method.

  Although the present invention has been described in detail and with reference to specific embodiments, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention.

  This application is based on a Japanese patent application (Japanese Patent Application No. 2014-122716) filed on June 13, 2014, the contents of which are incorporated herein by reference.

  According to the present invention, the device can be made smaller than the conventional device, and even if the target length of the twisted wire is changed, it is possible to prevent the twisted wire manufacturing process from being complicated as much as possible. The present invention having this effect is useful for a manufacturing apparatus for manufacturing a twisted wire in which a plurality of electric wires are twisted together.

DESCRIPTION OF SYMBOLS 1 Twist wire manufacturing apparatus 2a Frame 5a, 5b Pulley 6 Wire 8 1st holding part 9 Weight 12 Support stand 14 Limit switch 15 2nd holding part W1, W2 Electric wire Wt Twist wire

Claims (5)

A twisted wire manufacturing apparatus for manufacturing a twisted wire in which a plurality of electric wires are twisted together,
A first gripping portion that grips one end of the plurality of electric wires and is fixed to one side of the wire straddling the pulley;
A second gripping portion that is rotatable so as to grip the other end of the plurality of electric wires and twist the plurality of electric wires, and fixed so that the position with respect to the pulley is unchanged;
A weight that is fixed to the other side of the wire across the pulley and that urges the wire in a first direction in which the first gripping portion is separated from the second gripping portion by gravity acting on the weight. When,
A support base for supporting the weight, wherein the wire is supported in the first direction or in the second direction in which the first gripping part approaches the second gripping part while supporting the weight against the biasing force. A support base capable of moving the weight so as to move
With
The second gripping part is
The plurality of electric wires are twisted by rotating the support base with the weight moved until the wire urged in the first direction by the weight cannot move in the first direction. ,
Twisted wire manufacturing equipment. The twisted wire manufacturing apparatus according to claim 1,
A sensor capable of detecting whether the weight and the support are in contact with each other or separated from each other;
The second gripping part is
If the position of the weight at the time when the detection result of the sensor changes from contact to separation matches the target position based on the target length of the twisted wire, it begins to twist the plurality of wires.
Twisted wire manufacturing equipment. The twisted wire manufacturing apparatus according to claim 1 or 2,
A plurality of member sets including the first gripping part, the second gripping part, the wire and the weight;
The plurality of weights belonging to the plurality of member sets are supported by a single support base.
Twisted wire manufacturing equipment. A first gripping portion that holds one end of the plurality of electric wires and is fixed to one side of the wire straddling the pulley;
A second gripping portion that is rotatable so as to grip the other end of the plurality of electric wires and twist the plurality of electric wires, and fixed so that the position with respect to the pulley is unchanged;
A weight that is fixed to the other side of the wire across the pulley and that urges the wire in a first direction in which the first gripping portion is separated from the second gripping portion by gravity acting on the weight. When,
A support base for supporting the weight, wherein the wire is supported in the first direction or in the second direction in which the first gripping part approaches the second gripping part while supporting the weight against the biasing force. A support base capable of moving the weight so as to move
A twisted wire manufacturing method for manufacturing a twisted wire in which the plurality of electric wires are twisted together,
A first step of moving the wire in the second direction together with the weight by the support until the distance between the first gripping portion and the second gripping portion is shorter than a target length of the twist line;
A second step of attaching the plurality of members to the first grip portion and the second grip portion;
A third step of moving the wire with the weight by the support until the wire biased in the first direction by the weight cannot move in the first direction;
A fourth step of rotating the second gripping portion and twisting the plurality of electric wires;
Including twisted wire manufacturing equipment. The twisted wire manufacturing method according to claim 4,
Further using a sensor capable of detecting whether the weight and the support are in contact with each other or separated from each other,
The fourth step is started only when the position of the weight when the detection result of the sensor changes from contact to separation matches the target position based on the target length of the twist line.
Twisted wire manufacturing method.

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