JP6689037B2 - Wire twist device - Google Patents

Description

  The present invention relates to an electric wire twist device for twisting a set of electric wires.

  Conventionally, a first rotating clamp that holds one end of the first electric wire and the second electric wire at the same time and a second rotating clamp that simultaneously holds the other end of the first electric wire and the second electric wire are provided. An electric wire twist device is known in which a first electric wire and a second electric wire are twisted by rotating a clamp and a second rotary clamp in opposite directions (for example, see Patent Document 1).

  By the way, the apparent lengths of the first electric wire and the second electric wire become shorter with the twisting. The first rotary clamp is configured to be movable in a direction approaching the second rotary clamp so that excessive tension is not applied to the first electric wire and the second electric wire. Further, in order to twist the first electric wire and the second electric wire at an equal pitch, it is desirable to twist the first electric wire and the second electric wire with a constant tension applied. Thereby, the first electric wire and the second electric wire can be properly twisted together.

  Therefore, in the wire twist device described in Patent Document 1, an air cylinder that pulls the first rotary clamp in a direction away from the second rotary clamp is provided, and the first rotary clamp is pulled with a constant force. Also, if the rod of the air cylinder is fully extended, a constant force cannot be maintained.Therefore, a sensor to detect the position of the piston of the air cylinder is provided separately, and when the piston reaches a predetermined position, the motor will cause the rod to contract. It is supposed to move the air cylinder. This makes it possible to adjust the distance between the first rotary clamp and the second rotary clamp in accordance with the twisting while applying a constant tension to the first electric wire and the second electric wire.

JP, 2014-235908, A

  However, the above wire twist device requires an air cylinder, a sensor for detecting the position of the piston of the air cylinder, and a motor for moving the air cylinder, and has a problem that the number of parts is large.

  The present invention has been made in view of the above points, and an object thereof is to provide an electric wire twisting device capable of favorably twisting one set of electric wires and reducing the number of parts as compared with the related art. is there.

An electric wire twist device according to the present invention includes a first rotary clamp that simultaneously holds one end portions of a first electric wire and a second electric wire, and a second rotary clamp that simultaneously holds other end portions of the first electric wire and the second electric wire. A first rotary actuator for rotating the first rotary clamp, a second rotary actuator for rotating the second rotary clamp in a direction opposite to a rotation direction of the first rotary clamp, and a first rotary clamp for the first rotary clamp. And a motor that drives the two-turn clamp in a direction toward and away from the two-rotation clamp. The motor is configured to be position controllable and torque controllable. In the wire twist device, when the first rotary clamp and the second rotary clamp rotate while holding the first electric wire and the second electric wire, the tension of the first electric wire and the second electric wire is increased. A control device for controlling the torque of the motor so as to be constant is provided. The wire twist device is configured to automatically adjust the distance between the first rotary clamp and the second rotary clamp by performing torque control of the motor.

  According to the above wire twist device, torque control is performed on the motor that drives the first rotary clamp, so that the distance between the first rotary clamp and the second rotary clamp is automatically adjusted in accordance with the twisting. At the same time, the tensions of the first electric wire and the second electric wire are kept constant. Unlike the prior art, no air cylinder and sensor are required. Therefore, one set of electric wires can be satisfactorily twisted together, and the number of parts can be reduced as compared with the related art.

  According to a preferred aspect of the present invention, the control device controls the position of the motor so that the first rotary clamp approaches the second rotary clamp after the rotation of the first rotary clamp and the second rotary clamp is stopped. Is configured to provide control.

  When the first rotary clamp and the second rotary clamp release the first electric wire and the second electric wire with the tension applied to the first electric wire and the second electric wire, the first electric wire and the second electric wire momentarily contract, It can be rampant in the air. Therefore, there is a possibility that the twisted first electric wire and the second electric wire may not be recovered well. However, according to the above aspect, the first electric wire and the second electric wire are twisted and then loosened. Therefore, when the first rotary clamp and the second rotary clamp release the first electric wire and the second electric wire, the first electric wire and the second electric wire do not get out of order, and the twisted first electric wire and the second electric wire are good. Can be collected.

  According to another preferred aspect of the present invention, the control device determines that the first rotary clamp is predetermined after the first rotary clamp and the second rotary clamp release the first electric wire and the second electric wire. The position of the motor is controlled so as to move to the initial position.

  The first rotary clamp moves from the initial position toward the second rotary clamp in accordance with the twisting, but according to the above aspect, the first rotary clamp and the second rotary clamp release the first electric wire and the second electric wire. After that, the first rotary clamp automatically returns to the initial position by the position control of the motor.

  According to another preferred aspect of the present invention, the control device includes a second rotation in which the first rotation clamp rotates in a first rotation direction and the second rotation clamp rotates in a direction opposite to the first rotation direction. And a second rotating operation in which the first rotating clamp rotates in the second rotating direction and the second rotating clamp rotates in the first rotating direction. Thus, it is configured to control the first rotary actuator and the second rotary actuator.

  According to the above aspect, the first rotary clamp and the second rotary clamp rotate in the opposite direction after the first electric wire and the second electric wire are twisted once, so that the first rotary clamp and the second rotary clamp have the first electric wire. Also, when the second electric wire is released, the first electric wire and the second electric wire are prevented from untwisting due to rotation in opposite directions. Therefore, a good twisted wire can be obtained.

  According to another preferred aspect of the present invention, the control device is configured such that, after the second rotation operation, the first rotation clamp rotates in the first rotation direction and the second rotation clamp rotates the second rotation. Is configured to control the first rotary actuator and the second rotary actuator to perform a third rotating motion that rotates in a direction.

  According to the above aspect, after the second rotation operation, the first rotation clamp and the second rotation clamp rotate again in the original direction. This improves the adhesion between the first electric wire and the second electric wire. Therefore, a good twisted wire can be obtained.

  According to another preferred aspect of the present invention, the control device is configured such that, after the third rotation operation, the first rotation clamp rotates in the second rotation direction and the second rotation clamp rotates the first rotation. And controlling the first rotary actuator and the second rotary actuator to perform a fourth rotating operation that rotates in a direction.

  According to the above aspect, the first rotary clamp and the second rotary clamp rotate in opposite directions. Thereby, a good twisted electric wire can be obtained according to the types of the first electric wire and the second electric wire.

  According to another preferred aspect of the present invention, the first electric wire and the second electric wire are configured to be movable while simultaneously holding one end portions of the first electric wire and the second electric wire. A first transport clamp that transfers to a one-rotation clamp and a movable structure while simultaneously holding the other end portions of the first electric wire and the second electric wire, and the other end portions of the first electric wire and the second electric wire. A second transport clamp that delivers the second rotation clamp. The first transport clamp is configured to be movable toward and away from the second transport clamp. The direction in which the first rotary clamp approaches and moves away from the second rotary clamp is parallel to the direction in which the first transport clamp approaches and moves away from the second transport clamp. The wire twist device includes a connection mechanism that can switch between a state in which the first transport clamp and the first rotation clamp are connected and a state in which the first rotation clamp and the first rotation clamp are separated from each other.

  According to the above aspect, when the motor drives the first rotation clamp with the connection mechanism connecting the first conveyance clamp and the first rotation clamp, the first conveyance clamp moves together with the first rotation clamp. Therefore, a dedicated actuator for driving the first transport clamp becomes unnecessary, and the number of parts can be reduced.

  According to the present invention, it is possible to provide an electric wire twisting device capable of favorably twisting a pair of electric wires and reducing the number of parts as compared with the related art.

It is a top view which shows the structure of an electric wire processing apparatus typically. It is a figure which shows the structure of a discharge clamp typically. It is a figure which shows the structure of an intermediate clamp typically. It is a figure which shows the structure of a holding clamp typically. It is a perspective view which shows the structure of an alignment clamp typically. It is a front view which shows the structure of an alignment clamp typically. It is a figure which shows the structure of a front conveyance clamp typically. It is a figure which shows the structure of a front rotation clamp typically, (a) shows the state which opened the grip arm, (b) shows the state which closed the grip arm. FIG. 7A is a diagram showing a state in which a front transport clamp and a front rotary clamp are separated from each other, and FIG. It is a figure which shows a twist electric wire typically. (A)-(f) is explanatory drawing showing operation | movement of a front rotary clamp and a rear rotary clamp.

  FIG. 1 is a plan view showing a configuration of an electric wire processing device 1 including an electric wire twisting device 3 according to an embodiment of the present invention. In the following description, the bottom, top, left, and right of FIG. 1 are referred to as front, rear, left, and right, respectively, unless otherwise specified. Therefore, the lower side and the upper side in FIG. 1 are the front side and the rear side, respectively. The electric wire processing apparatus 1 is an apparatus for automatically and continuously manufacturing a twisted electric wire formed by twisting two long electric wires from two long electric wires. The electric wire processing device 1 includes an electric wire end processing device 2 that processes an end part of an electric wire, and an electric wire twist device 3 that performs a process of twisting two electric wires processed by the electric wire end processing device 2.

  First, the configuration of the wire end processing device 2 will be described. The wire end processing device 2 performs a cutting process for cutting a long wire, a stripping process for stripping off the coating on the end of the cut wire, and a terminal crimping on the end of the stripped wire. The terminal crimping process is performed. However, the terminal crimping process is not always necessary and can be omitted. In addition, the wire end processing device 2 may be configured to perform other processing, for example, processing of inserting a waterproof seal into the electric wire, processing of soldering the electric wire, or the like. The wire end treatment device 2 according to the present embodiment performs a cutting process, a stripping process, and a terminal crimping process on two electric wires, that is, the first electric wire C1 and the second electric wire C2. In particular, the electric wire end treatment device 2 according to the present embodiment is configured to perform the above-mentioned processing on the first electric wire C1 and the above-mentioned processing on the second electric wire C2 in parallel, instead of in parallel.

  The wire end processing device 2 includes a first pre-feeder 11 that supplies a long first electric wire C1 and a second pre-feeder 21 that supplies a long second electric wire C2. The first pre-feeder 11 is configured to feed the first electric wire C1 forward, and the second pre-feeder 21 is configured to feed the second electric wire C2 forward. In the wire end treatment device 2, the front side is the upstream side of the wire feeding, and the rear side is the downstream side. The first pre-feeder 11 has a feeding device 13 that feeds the first electric wire C1 forward and loosens it. The configuration of the feeding device 13 is not limited at all, but in the present embodiment, it is configured by a pair of rollers that sandwich the first electric wire C1. One of the rollers is driven by a motor (not shown) to rotate. The second pre-feeder 21 has a feeding device 23 that feeds the second electric wire C2 forward and loosens it. Although the configuration of the feeding device 23 is not limited at all, in the present embodiment, it is configured by a pair of rollers that sandwich the second electric wire C2. One of the rollers is driven by a motor (not shown) to rotate. The configurations of the first pre-feeder 11 and the second pre-feeder 21 are merely examples, and the configurations thereof are not particularly limited. As the first pre-feeder 11 and the second pre-feeder 21, any known pre-feeder can be used.

  The electric wire end treatment device 2 includes a first front clamp 14 that holds the first electric wire C1 and a second front clamp 24 that holds the second electric wire C2. Any known clamps can be used as the first front clamp 14 and the second front clamp 24. The first front clamp 14 and the second front clamp 24 are configured to be movable back and forth, and appropriately move back and forth during a later-described stripping process and terminal crimping process. The first front clamp 14 and the second front clamp 24 are attached to the front clamp support 30. The front clamp support tool 30 supports the first front clamp 14 and the second front clamp 24 so as to be movable back and forth. The front clamp support 30 includes a first front cutting position, a second front cutting position, a first front stripping position, a second front stripping position, a first front terminal crimping position, a second front cutting position, which will be described later. It is configured to be movable to the terminal crimping position. The mechanism for driving the front clamp support tool 30 is not limited at all, but the wire end treatment device 2 according to the present embodiment includes the rail 31 engaged with the front clamp support tool 30 and the front clamp support tool 30 on the rail 31. An actuator 32 such as a motor or a cylinder for traveling is provided. The rail 31 extends in the left-right direction, and the front clamp support 30 is configured to be movable leftward and rightward.

  The wire end treatment device 2 includes a cutting blade 33 that cuts the first electric wire C1 and the second electric wire C2, a front stripping blade 34 and a rear stripping blade that strip the coating of the first electric wire C1 and the coating of the second electric wire C2. And 35. In the present embodiment, each of the cutting blade 33, the front stripping blade 34, and the rear stripping blade 35 is composed of a pair of blades (not shown) that can approach and separate from each other. However, the configurations of the cutting blade 33, the front stripping blade 34, and the rear stripping blade 35 are not particularly limited, and any known cutting blade and stripping blade can be used. The front stripping blade 34 is arranged on the right side of the cutting blade 33, and the rear stripping blade 35 is arranged on the left side of the cutting blade 33. However, the arrangement of the front stripping blade 34 and the rear stripping blade 35 is not particularly limited. Although the cutting blade 33, the front stripping blade 34, and the rear stripping blade 35 are separate bodies in the present embodiment, the cutting blade 33 also serves as the front stripping blade 34 and / or the rear stripping blade 35. May be. That is, the front stripping blade 34 and / or the rear stripping blade 35 may be configured by the cutting blade 33. Thereby, it is not necessary to separately provide the front stripping blade 34 and / or the rear stripping blade 35 and the cutting blade 33, and the number of parts can be reduced.

  The feeding device 5 is arranged in front of the cutting blade 33, that is, behind the cutting blade 33. The feeding device 5 is a device that feeds the first electric wire C1 held by the first front clamp 14 or the second electric wire C2 held by the second front clamp 24 forward or backward. The configuration of the feeding device 5 is not limited at all, and any known feeding device can be used. Here, the feeding device 5 is composed of a pair of upper and lower rollers. One or both of the pair of rollers are configured to rotate by receiving the power of a drive source such as a motor.

  Further, the wire end treatment device 2 includes a rear clamp 36 that holds either one of the first electric wire C1 and the second electric wire C2. The rear clamp 36 is arranged on the side opposite to the first front clamp 14 and the second front clamp 24 with respect to the cutting blade 33. In other words, the cutting blade 33 is arranged between the first front clamp 14 and the second front clamp 24 and the rear clamp 36. The configuration of the rear clamp 36 is not limited at all, and any known clamp can be used. The rear clamp 36 is configured to be movable back and forth, and is appropriately moved back and forth during a cutting process and a stripping process which will be described later. The rear clamp 36 is attached to a rear clamp support 37. The rear clamp support tool 37 supports the rear clamp 36 so as to be movable back and forth. The rear clamp support tool 37 is configured to be movable to a rear cutting position, a rear stripping position, and a rear terminal crimping position, which will be described later. Although the mechanism for driving the rear clamp support tool 37 is not limited at all, the wire end treatment device 2 according to the present embodiment is configured so that the rail 38 engaged with the rear clamp support tool 37 and the rear clamp support tool 37 on the rail 38. An actuator 39 such as a motor or a cylinder for traveling is provided. The rail 38 extends in the left-right direction, and the rear clamp support member 37 is configured to be movable leftward and rightward.

  The wire end processing device 2 also includes a front terminal crimping unit 40 and a rear terminal crimping unit 41. The front terminal crimping unit 40 is arranged to the right of the front stripping blade 34. The rear terminal crimping unit 41 is arranged to the left of the rear stripping blade 35. However, the configuration and arrangement of the front terminal crimping unit 40 and the rear terminal crimping unit 41 are not limited at all, and any known terminal crimping unit can be used.

  The above-mentioned first front cutting position is the position of the front clamp support tool 30 when the first front clamp 14 is positioned before the cutting blade 33. The above-mentioned rear cutting position is the position of the rear clamp support member 37 when the rear clamp 36 is positioned before the cutting blade 33. When the front clamp support tool 30 is in the first front cutting position and the rear clamp support tool 37 is in the rear cutting position, the first electric wire C1 held by the first front clamp 14 and the rear clamp 36 is the cutting blade. It is cut by 33. In this way, the cutting process of the first electric wire C1 is performed. The above-mentioned second front cutting position is the position of the front clamp support tool 30 when the second front clamp 24 is positioned before the cutting blade 33. When the front clamp support tool 30 is in the second front cutting position and the rear clamp support tool 37 is in the rear cutting position, the second electric wire C2 held by the second front clamp 24 and the rear clamp 36 is the cutting blade. It is cut by 33. In this way, the cutting process of the second electric wire C2 is performed.

  The aforementioned first front stripping position is the position of the front clamp support tool 30 when the first front clamp 14 is located in front of the front stripping blade 34. When the front clamp support 30 is in the first front stripping position, the coating of the end portion of the first electric wire C1 held by the first front clamp 14 is stripped by the stripping blade 34. In this way, the stripping process of the front end of the first electric wire C1 is performed. The above-mentioned second front stripping position is the position of the front clamp support tool 30 when the second front clamp 24 is located in front of the front stripping blade 34. When the front clamp support 30 is in the second stripping position, the stripping blade 34 strips the coating of the end portion of the second electric wire C2 held by the second front clamp 24. In this way, the stripping process of the front end of the second electric wire C2 is performed.

  The above-mentioned first front terminal crimping position is the position of the front clamp support tool 30 when the first front clamp 14 is located in front of the front terminal crimping unit 40. When the front clamp support tool 30 is in the first front terminal crimping position, the terminal T is crimped to the first electric wire C1 held by the first front clamp 14 by the front terminal crimping unit 40. In this way, the terminal crimping process of the front end portion of the first electric wire C1 is performed. The above-mentioned second front terminal crimping position is the position of the front clamp support tool 30 when the second front clamp 24 is located in front of the front terminal crimping unit 40. When the front clamp support 30 is at the second front terminal crimping position, the terminal T is crimped by the front terminal crimping unit 40 to the second electric wire C2 held by the second front clamp 24. In this way, the terminal crimping process of the front end portion of the second electric wire C2 is performed.

  The wire end treatment device 2 includes a discharge clamp 42 that discharges from the wire end treatment device 2 the first electric wire C1 and the second electric wire C2 that have been subjected to the above-described cutting treatment, stripping treatment, and terminal crimping treatment. The discharge clamp 42 is configured to be capable of holding the first electric wire C1 and the second electric wire C2 and movable while holding the first electric wire C1 and the second electric wire C2. Although the structure of the discharge clamp 42 is not limited at all, in the present embodiment, as shown in FIG. 2, the discharge clamp 42 includes a slider 44 engaged with the rail 43, a clamp body 45 supported by the slider 44, and a rotary shaft. It has a pair of grip arms 47 that are rotatably supported by the clamp body 45 by 46. Further, the discharge clamp 42 has an air cylinder (hereinafter, simply referred to as a cylinder) 48 connected to the grip arm 47. The grip arm 47 receives the driving force of the cylinder 48 and rotates around the rotation shaft 46. The grip cables 47 sandwich the first electric wire C1 or the second electric wire C2, whereby the first electric wire C1 or the second electric wire C2 is held by the discharge clamp 42. The slider 44 is configured to be movable along the rail 43. A motor 49 is connected to the slider 44 via a power transmission mechanism (not shown). The motor 49 is configured to drive the slider 44 along the rail 43. The configuration of the power transmission mechanism described above and below is not limited at all, and may be, for example, a configuration including a pulley and a transmission belt, a configuration including a plurality of gears, or a configuration including a ball screw.

  The above is the configuration of the wire end processing device 2. Although the details will be described later, the wire end processing device 2 alternately creates first wires C1 and second wires C2 having terminals T crimped on both ends. The first electric wire C1 and the second electric wire C2 are alternately sent to the electric wire twist device 3. The electric wire processing device 1 according to the present embodiment includes an intermediate clamp 50 that sends the first electric wire C1 and the second electric wire C2 from the electric wire end processing device 2 to the electric wire twist device 3. However, the intermediate clamp 50 is not always necessary and can be omitted. In that case, the first electric wire C1 and the second electric wire C2 are sent to the electric wire twist device 3 by the discharge clamp 42 of the electric wire end processing device 2. That is, the first electric wire C1 and the second electric wire C2 are directly sent from the electric wire end processing device 2 to the electric wire twisting device 3.

  The intermediate clamp 50 is arranged in the middle of a path of the first electric wire C1 and the second electric wire C2 from the electric wire end processing device 2 to a holding clamp 60 described later. The intermediate clamp 50 according to the present embodiment is configured to be able to hold the first electric wire C1 and the second electric wire C2 at the same time, and to be movable while holding both the first electric wire C1 and the second electric wire C2. However, the intermediate clamp 50 is not limited to one that can simultaneously hold the first electric wire C1 and the second electric wire C2, and is configured to be movable while holding either one of the first electric wire C1 and the second electric wire C2. May be. The intermediate clamp 50 is configured to be movable between a receiving position for receiving the first electric wire C1 and the second electric wire C2 from the discharge clamp 42 and a passing position for transferring the first electric wire C1 and the second electric wire C2 to the holding clamp 60. There is. The configuration of the intermediate clamp 50 is not particularly limited, but in the present embodiment, it is configured as follows.

  As shown in FIG. 3, the intermediate clamp 50 includes a slider 52 engaged with a rail 51, a base 53 supported by the slider 52, a clamp main body 54 vertically connected to the base 53, and a clamp main body 54. And a pair of grip arms 55 provided on the. An intermediate wall 55A is provided between the grip arms 55. Both grip arms 55 are configured to be rotatable around a rotation shaft 59 so as to approach or separate from each other. By sandwiching the first electric wire C1 and the second electric wire C2 between the grip arms 55 and the intermediate wall 55A, the first electric wire C1 and the second electric wire C2 are simultaneously held by the intermediate clamp 50. The clamp body 54 is provided with a cylinder 56 connected to the grip arm 55. The grip arm 55 is driven by the cylinder 56. The base 53 is provided with a cylinder 57 for moving the clamp body 54 up and down. The mechanism for raising and lowering the clamp body 54 is not limited at all, but for example, a rack and pinion or a ball screw connected to the cylinder 57 can be preferably used. The intermediate clamp 50 only needs to hold the first electric wire C1 and the second electric wire C2 at the same time, and the intermediate wall 55A is not always necessary.

  As shown in FIG. 1, the rail 51 extends in the left-right direction. The slider 52 is configured to be movable along the rail 51. A cylinder 58 is connected to the slider 52 via a power transmission mechanism (not shown). The cylinder 58 is configured to drive the slider 52 along the rail 51.

  Next, the configuration of the wire twist device 3 will be described. The electric wire twist device 3 is configured to perform a process of arranging the first electric wire C1 and the second electric wire C2 and a process of twisting the first electric wire C1 and the second electric wire C2.

  The electric wire twist device 3 includes a holding clamp 60 that holds the first electric wire C1 and the second electric wire C2 at the same time. The holding clamp 60 is configured to be able to hold the rear ends of the first electric wire C1 and the second electric wire C2 at the same time. As shown in FIG. 4, the holding clamp 60 includes a clamp body 63, a first grip plate 61 slidably provided on the clamp body 63, and a second grip plate 62 slidably provided on the clamp body 63. have. The clamp body 63 has a bottom wall 63a, a first side wall 63b extending upward from the bottom wall 63a, a second side wall 63c, and an intermediate wall 63d. The intermediate wall 63d is arranged between the first side wall 63b and the second side wall 63c. The first side wall 63b is arranged to the right of the middle wall 63d, and the second side wall 63c is arranged to the left of the middle wall 63d.

  The first grip plate 61 is arranged between the first side wall 63b and the intermediate wall 63d. The 1st grip plate 61 is being fixed to the 1st rod 66 slidably inserted in the 1st side wall 63b. The second grip plate 62 is arranged between the second side wall 63c and the intermediate wall 63d. The 2nd grip plate 62 is being fixed to the 2nd rod 67 slidably inserted in the 2nd side wall 63c. The first grip plate 61 and the second grip plate 62 are configured to be slidable so that they can approach and separate from the intermediate wall 63d. The holding clamp 60 has a cylinder 64 connected to the first rod 66 and a cylinder 65 connected to the second rod 67. The first grip plate 61 and the first rod 66 are driven by the cylinder 64 to slide, and the second grip plate 62 and the second rod 67 are driven by the cylinder 65 to slide. The first electric wire C1 is held by the holding clamp 60 by sandwiching the first electric wire C1 between the first grip plate 61 and the intermediate wall 63d. The second electric wire C2 is held by the holding clamp 60 by sandwiching the second electric wire C2 between the second grip plate 62 and the intermediate wall 63d. The first grip plate 61 and the intermediate wall 63d form a first holding portion that holds one end of the first electric wire C1, and the second grip plate 62 and the intermediate wall 63d form a second holding portion that holds one end of the second electric wire C2. It forms a holding part. The holding clamp 60 is configured to hold the second electric wire C2 after holding the first electric wire C1.

  In the present embodiment, the first grip plate 61 and the intermediate wall 63d hold the first electric wire C1, and the second grip plate 62 and the intermediate wall 63d hold the second electric wire C2. The first grip plate 61 and the middle wall 63d may hold the second electric wire C2, and the second grip plate 62 and the middle wall 63d may hold the first electric wire C1.

  The clamp body 63 can move up and down. The clamp body 63 is supported by the base 120 so as to be able to move up and down. The base 120 is provided with a cylinder 121 that moves up and down the clamp body 63. However, the above configuration is an example, and the mechanism for moving the clamp body 63 up and down is not limited at all. Further, the holding clamp 60 is configured to be movable back and forth. The holding clamp 60 moves forward after receiving the first electric wire C1 and the second electric wire C2 from the intermediate clamp 50.

  The electric wire twisting device 3 includes an alignment clamp 70 that arranges the first electric wire C1 and the second electric wire C2 whose ends are held by the holding clamp 60 in parallel. The alignment clamp 70 is configured to be movable back and forth along a rail 71 extending in the front-rear direction. 5 is a perspective view of the alignment clamp 70, and FIG. 6 is a front view of the alignment clamp 70.

  As shown in FIGS. 5 and 6, the alignment clamp 70 includes a slider 72 slidably supported by a rail 71, a clamp body 73 supported by the slider 72, and an inclination provided on the rear side of the clamp body 73. And a stand 74. The tilt table 74 has a tilted surface 74a that is a curved surface that tilts rearward and obliquely downward. The upper surface 73a of the clamp body 73 is formed flat, and a sorting plate 75 is fixed to the center of the front end of the upper surface 73a in the left-right direction. A first alignment arm 76 and a second alignment arm 77 are arranged on the front surface 73b of the clamp body 73. The first alignment arm 76 and the second alignment arm 77 are supported on the clamp body 73 by a rotation shaft 78, and are configured to be rotatable around the rotation shaft 78. A first aligning roller 76a is attached to the tip of the first aligning arm 76, and a second aligning roller 77a is attached to the tip of the second aligning arm 77. As the first alignment arm 76 and the second alignment arm 77 rotate, the first alignment roller 76a and the second alignment roller 77a move toward and away from the sorting plate 75. As shown in FIG. 6, the clamp body 73 is provided with a cylinder 79 connected to the first alignment arm 76 and the second alignment arm 77. The cylinder 79 is configured to rotate the first alignment arm 76 and the second alignment arm 77. By adjusting the cylinder pressure of the cylinder 79, the force with which the first alignment arm 76 and the second alignment arm 77 hold the first electric wire C1 and the second electric wire C2 can be adjusted. A motor 69 is connected to the slider 72 via a drive mechanism (not shown). The motor 69 is configured to drive the slider 72 along the rail 71.

  As shown in FIG. 6, when the first aligning roller 76a approaches the sorting plate 75, the first aligning roller 76a and the sorting plate 75 sandwich the first electric wire C1 and hold the first electric wire C1. When the second aligning roller 77a approaches the sorting plate 75, the second aligning roller 77a and the sorting plate 75 sandwich the second electric wire C2 and hold the second electric wire C2. The alignment clamp 70 holds the first electric wire C1 and the second electric wire C2 when positioned on the rear end portion 71a (see FIG. 1) of the rail 71, and moves forward while holding the first electric wire C1 and the second electric wire C2. Move to. As a result, the first electric wire C1 and the second electric wire C2 are arranged in parallel.

  As shown in FIG. 1, the electric wire twist device 3 includes a front transport clamp 80F capable of simultaneously holding the front end portions of the first electric wire C1 and the second electric wire C2, and the rear end portions of the first electric wire C1 and the second electric wire C2. The rear transport clamp 80R that can be held at the same time is provided. The front transport clamp 80F is engaged with a rail 81F extending in the left-right direction, and is configured to be movable left and right. The rear transport clamp 80R is configured to be movable left and right by engaging a rail 81R extending in the left-right direction.

  As shown in FIG. 7, the front transport clamp 80F is rotatably supported by the clamp body 83 by a slider 82 engaged with a rail 81F, a clamp body 83 supported by the slider 82 so as to be able to move up and down. And a pair of grip arms 85. Further, the front conveyance clamp 80F has a cylinder 86 connected to the grip arm 85. The grip arm 85 receives the driving force of the cylinder 86 and rotates around the rotation shaft 84. Since both grip arms 85 sandwich the first electric wire C1 and the second electric wire C2, the first electric wire C1 and the second electric wire C2 are simultaneously held by the front transport clamp 80F. Further, the front transport clamp 80F has a cylinder 87 connected to the clamp body 83. The clamp body 83 receives the driving force of the cylinder 87 and moves up and down. The slider 82 is connected to the cylinder 88 via a drive mechanism (not shown), and is configured to be movable along the rail 81F. The cylinder 88 drives the slider 82 along the rail 81F.

  The rear transport clamp 80R has the same configuration as the front transport clamp 80F. Therefore, detailed description of the rear transport clamp 80R is omitted. However, the slider 82 of the rear transport clamp 80R is engaged with the rail 81R, and receives the driving force of the cylinder 88 to move along the rail 81R.

  The electric wire twist device 3 rotates while holding the front end portions of the first electric wire C1 and the second electric wire C2 at the same time while rotating the front rotary clamp 90F and the rear end portions of the first electric wire C1 and the second electric wire C2 at the same time. And a rear rotation clamp 90R for Since the front rotary clamp 90F and the rear rotary clamp 90R have the same configuration, only the configuration of the front rotary clamp 90F will be described here, and the description of the configuration of the rear rotary clamp 90R will be omitted.

  As shown in FIGS. 8A and 8B, the front rotary clamp 90F includes a clamp body 91, a shaft 92 slidable forward and backward with respect to the clamp body 91 (left and right in FIG. 8A), and a shaft. And a pair of grip arms 93 attached to 92. The grip arm 93 includes a first link 94 rotatably supported by the shaft 92 by a rotary shaft 94a, a second link 95 rotatably supported by the first link 94 by a rotary shaft 95a, and a first link 94 by a rotary shaft 96a. The third link 96 is rotatably supported by the second link 95. A holding portion 97 that holds the first electric wire C1 and the second electric wire C2 is provided at the tip of the third link 96. In the front rotation clamp 90F, when the shaft 92 moves rearward (rightward in FIG. 8A), the grip arm 93 opens to release the first electric wire C1 and the second electric wire C2 (see FIG. 8A), When the shaft 92 moves forward (to the left in FIG. 8A), the grip arm 93 is closed and holds the first electric wire C1 and the second electric wire C2.

  An actuator 98 that slides the shaft 92 is connected to the shaft 92. The type of the actuator 98 is not particularly limited, and for example, a cylinder, a motor or the like can be used. A motor 99 that rotates the front rotation clamp 90F around the rotation center axis 90c is connected to the front rotation clamp 90F. The front rotation clamp 90F rotates around the rotation center axis 90c while simultaneously holding the front ends of the first electric wire C1 and the second electric wire C2, and the rear rotation clamp 90R rotates the rear ends of the first electric wire C1 and the second electric wire C2. The first electric wire C1 and the second electric wire C2 are twisted by rotating around the rotation center axis 90c while simultaneously holding the wire.

  One or both of the front rotary clamp 90F and the rear rotary clamp 90R are configured to be movable back and forth. In the present embodiment, both the front rotary clamp 90F and the rear rotary clamp 90R are configured to be movable back and forth. As will be described later, the front rotary clamp 90F is automatically movable back and forth. The rear rotary clamp 90R is manually movable back and forth. Next, a mechanism for moving the front rotary clamp 90F back and forth will be described.

  As shown in FIG. 1, a slider 101 is fixed to the front rotary clamp 90F. The slider 101 is engaged with a rail 102 extending in the front-rear direction and is configured to be able to travel on the rail 102. A motor 103 that drives the slider 101 to travel on the rail 102 is connected to the slider 101. The motor 103 may be mounted on the slider 101 or may be connected to the slider 101 via a power transmission mechanism (not shown). The motor 103 is a motor capable of torque control and position control, and is configured by an AC servo motor in this embodiment. However, the type of the motor 103 is not particularly limited. When the slider 101 moves forward, the front rotation clamp 90F moves forward, and when the slider 101 moves backward, the front rotation clamp 90F moves backward.

  As shown in FIG. 9A, the slider 101 is provided with a connecting pin 104. The connecting pin 104 is configured to be retractable in the slider 101, and is movable between a protruding position protruding from the slider 101 and a storage position stored inside the slider 101. FIG. 9A shows a state in which the connecting pin 104 is in the protruding position.

  The rail 81F engaged with the slider 82 of the front rotation clamp 90F is supported by the frame 89. The frame 89 is engaged with the rail 102 and is configured to be movable back and forth along the rail 102. A connecting member 105 is fixed to the frame 89, and a hole 105 a that engages with the connecting pin 104 is formed in the connecting member 105. As shown in FIG. 9B, when the connecting pin 104 of the slider 101 engages with the hole 105 a of the connecting member 105, the slider 101 and the connecting member 105 are connected. As a result, the front conveyance clamp 80F and the front rotation clamp 90F are connected, and the front conveyance clamp 80F can be moved back and forth together with the front rotation clamp 90F. The front transport clamp 80F moves back and forth by the driving force of the motor 103 that moves the front rotation clamp 90F back and forth. On the other hand, when the connecting pin 104 moves to the storage position, the engagement between the connecting pin 104 and the hole 105a is released. As a result, the front conveyance clamp 80F and the front rotation clamp 90F are separated from each other, and the front conveyance clamp 80F cannot move back and forth.

  As shown in FIG. 1, a tray 110 for collecting twisted electric wires (that is, an electric wire formed by twisting the first electric wire C1 and the second electric wire C2) is arranged below the front rotary clamp 90F and the rear rotary clamp 90R. ing. When the front rotary clamp 90F and the rear rotary clamp 90R release the twisted electric wire, the twisted electric wire falls due to gravity and is collected in the tray 110.

  As shown in FIG. 1, the electric wire processing device 1 includes a control device 200. The control device 200 controls each of the above-mentioned actuators and each of the motors to execute the above-mentioned processing. The configuration of the control device 200 is not particularly limited, and may be, for example, a computer including a CPU, RAM, ROM, and the like.

  The above is the configuration of the electric wire processing device 1. Next, the operation of the electric wire processing device 1 will be described. The following operations are executed under the control of the control device 200.

  As shown in FIG. 10, the electric wire processing device 1 manufactures a twisted electric wire CT in which a first electric wire C1 and a second electric wire C2 having terminals T crimped at both ends are twisted together. The first electric wire C1 and the second electric wire C2 have a core wire 151 and a coating 152 that covers the periphery of the core wire 151. The core wire 151 is made of a conductor such as metal, and the coating 152 is made of an insulating material such as vinyl resin. In the electric wire processing device 1, the length of the twisted electric wire CT to be manufactured can be adjusted. The front conveyance clamp 80F and the front rotation clamp 90F need to hold the front end portions of the first electric wire C1 and the second electric wire C2. And the front-back position of the front rotation clamp 90F is adjusted. When adjusting the front-rear position, the connecting pin 104 of the slider 101 engages with the hole 105a of the connecting member 105, and the front rotation clamp 90F and the front transport clamp 80F are connected. Then, the motor 103 is driven to move the front rotation clamp 90F and the front conveyance clamp 80F to the positions corresponding to the lengths of the first electric wire C1 and the second electric wire C2. That is, the front rotation clamp 90F and the front transport clamp 80F move to a position where the front end portions of the first electric wire C1 and the second electric wire C2 are held. When the front rotation clamp 90F and the front conveyance clamp 80F reach the above positions, the motor 103 stops and the coupling pin 104 and the hole 105a are disengaged. As a result, the front rotation clamp 90F is maintained movably back and forth by the motor 103, while the front transport clamp 80F is immovable back and forth.

  After adjusting the front and rear positions of the front rotation clamp 90F and the front conveyance clamp 80F, the following processes are executed. First, the operation of the wire end processing device 2 will be described.

  In the wire end processing device 2, when the front clamp support tool 30 is at the first front cutting position and the rear clamp support tool 37 is at the rear cutting position, the first wire C1 having the terminal T crimped to the front end portion thereof. Are fed forward by the feeding device 5. The first electric wire C1 is held by the first front clamp 14 and the rear clamp 36. Then, the cutting blade 33 cuts the first electric wire C1.

  Next, the front clamp support tool 30 moves to the first front stripping position, and the front stripping blade 34 strips off the coating on the front end portion of the first electric wire C1 held by the first front clamp 14. Further, the rear clamp support member 37 moves to the rear stripping position, and the rear stripping blade 35 strips off the coating of the rear end portion of the first electric wire C1 held by the rear clamp 36.

  Next, the front clamp support 30 moves to the first front terminal crimping position, and the front terminal crimping unit 40 crimps the terminal T to the front end portion of the first electric wire C1 held by the first front clamp 14. Further, the rear clamp support member 37 moves to the rear terminal crimping position, and the rear terminal crimping unit 41 crimps the terminal T to the rear end portion of the first electric wire C1 held by the rear clamp 36.

  When the terminal T is crimped to the front end of the first electric wire C1, the front clamp support 30 moves from the first front terminal crimping position to the second front cutting position. When the terminal T is crimped to the rear end portion of the first electric wire C1, the first electric wire C1 is transferred from the rear clamp 36 to the discharge clamp 42, and the rear clamp support 37 moves from the rear terminal crimping position to the rear cutting position. Move to.

  Next, the feeding device 5 supplies the second electric wire C2 having the terminal T crimped to the front end thereof to the front. After that, similarly to the first electric wire C1, the second electric wire C2 is cut, the coating is stripped, and the terminal T is crimped. That is, first, the second electric wire C2 is held by the second front clamp 24 and the rear clamp 36, and then cut by the cutting blade 33.

  Next, the front clamp support tool 30 moves to the second front stripping position, and the front stripping blade 34 strips off the coating on the front end portion of the second electric wire C2 held by the second front clamp 24. Further, the rear clamp support member 37 moves to the rear stripping position, and the rear stripping blade 35 strips off the coating of the rear end portion of the second electric wire C2 held by the rear clamp 36.

  Next, the front clamp support 30 moves to the second front terminal crimping position, and the front terminal crimping unit 40 crimps the terminal T to the front end portion of the second electric wire C2 held by the second front clamp 24. Further, the rear clamp support tool 37 moves to the rear terminal crimping position, and the rear terminal crimping unit 41 crimps the terminal T to the rear end portion of the second electric wire C2 held by the rear clamp 36.

  When the terminal T is crimped to the front end portion of the second electric wire C2, the front clamp support tool 30 moves from the second front terminal crimping position to the first front cutting position. When the terminal T is crimped to the rear end of the second electric wire C2, the second electric wire C2 is transferred from the rear clamp 36 to the discharge clamp 42, and the rear clamp support 37 moves from the rear terminal crimping position to the rear cutting position. Move to.

  In the wire end processing device 2, thereafter, the same operation is repeated. As a result, the first electric wire C1 and the second electric wire C2 having the terminals T crimped on both ends are alternately discharged from the electric wire end treatment device 2.

  The discharge clamp 42 that has received the first electric wire C1 from the rear clamp 36 moves while holding the first electric wire C1, and transfers the first electric wire C1 to the intermediate clamp 50. The intermediate clamp 50 receives the first electric wire C1 from the discharge clamp 42 at the receiving position.

  After delivering the first electric wire C1 to the intermediate clamp 50, the discharge clamp 42 returns from the delivering position to the receiving position and receives the second electric wire C2 from the rear clamp 36. After receiving the second electric wire C2, the discharge clamp 42 moves from the receiving position to the delivering position. Then, the discharge clamp 42 delivers the second electric wire C2 to the intermediate clamp 50.

  The intermediate clamp 50 that has received the first electric wire C1 and the second electric wire C2 moves to the delivery position and delivers the first electric wire C1 and the second electric wire C2 to the holding clamp 60. At this time, the clamp body 63 of the holding clamp 60 rises, the rear end of the first electric wire C1 is inserted into the first holding portion of the holding clamp 60, and the rear end of the second electric wire C2 is the second end of the holding clamp 60. It is inserted into the holder. Then, the intermediate clamp 50 opens the grip arm 55 and returns from the transfer position to the reception position.

  When the holding clamp 60 holds the first electric wire C1 and the second electric wire C2, the alignment clamp 70 is located on the rear end portion 71a of the rail 71. That is, the alignment clamp 70 is located near the holding clamp 60. After the rear ends of the first electric wire C1 and the second electric wire C2 are held by the holding clamp 60, the alignment clamp 70 moves forward (downward in FIG. 1). As a result, the alignment clamp 70 aligns the first electric wire C1 and the second electric wire C2. At this time, the holding clamp 60 also moves forward and moves to a position where the electric wire is passed to the rear transport clamp 80R.

  Next, the front transport clamp 80F and the rear transport clamp 80R move to their respective receiving positions. The front transport clamp 80F simultaneously holds the front ends of the first and second electric wires C2, and the rear transport clamp 80R simultaneously holds the rear ends of the first and second electric wires C1 and C2. The front transport clamp 80F and the rear transport clamp 80R move to the delivery position while simultaneously holding the front end portion and the rear end portion of the first electric wire C1 and the second electric wire C2, respectively.

  After the front transport clamp 80F and the rear transport clamp 80R reach the delivery position, the front rotary clamp 90F and the rear rotary clamp 90R hold the front end portion and the rear end portion of the first electric wire C1 and the second electric wire C2, respectively. The front transport clamp 80F and the rear transport clamp 80R release the first electric wire C1 and the second electric wire C2 and return to the receiving position.

  As described above, the front rotary clamp 90F can be moved back and forth by the motor 103 which is an AC servomotor. The front rotary clamp 90F moves forward while holding the first electric wire C1 and the second electric wire C2 at the same time (in other words, in a direction away from the rear rotary clamp 90R) and pulls the loosened first electric wire C1 and second electric wire C2. . The motor 103 is configured to be capable of torque control, and pulls the front rotary clamp 90F forward with a predetermined constant torque (hereinafter, referred to as a predetermined torque) (see FIG. 11A). Thereby, a predetermined tension T1 is applied to the first electric wire C1 and the second electric wire C2, and the first electric wire C1 and the second electric wire C2 are straightened. It should be noted that the values of the predetermined torque and the predetermined tension T1 are not limited at all, and can be set appropriately according to the thickness and length of the first electric wire C1 and the second electric wire C2, for example.

  The front rotary clamp 90F and the rear rotary clamp 90R hold the front end portion and the rear end portion of the first electric wire C1 and the second electric wire C2, respectively, while applying the tension T1 to the first electric wire C1 and the second electric wire C2, Rotate in opposite directions. If one and the other of the rotation directions around the rotation center axis 90c are referred to as a first rotation direction R1 and a second rotation direction R2, respectively, the front rotation clamp 90F holds the front ends of the first electric wire C1 and the second electric wire C2 at the same time. While rotating in the first rotation direction R1, the rear rotation clamp 90R rotates in the second rotation direction R2 while simultaneously holding the rear ends of the first electric wire C1 and the second electric wire C2. As a result, the first electric wire C1 and the second electric wire C2 are twisted together. When the first electric wire C1 and the second electric wire C2 are twisted together, their apparent length, that is, the length of the twisted electric wire CT becomes shorter than the original length of the first electric wire C1 and the second electric wire C2. Therefore, the front rotation clamp 90F moves rearward while rotating in the first rotation direction R1 (see FIG. 11B). That is, the front rotary clamp 90F moves in a direction approaching the rear rotary clamp 90R while rotating in the first rotation direction R1.

  The front rotary clamp 90F and the rear rotary clamp 90R may rotate in only one direction, but in the present embodiment, they are controlled to rotate in one direction and then rotate in the opposite direction. That is, the front rotary clamp 90F and the rear rotary clamp 90R rotate in the normal direction and then in the reverse direction (see FIG. 11C). Specifically, as described above, the front rotation clamp 90F rotates in the first rotation direction R1 while simultaneously holding the front ends of the first electric wire C1 and the second electric wire C2, and then the first electric wire C1 and the second electric wire C2. It rotates in the second rotation direction R2 while applying the predetermined tension T1. That is, the front rotation clamp 90F rotates in the second rotation direction R2 while the motor 103 performs the torque control described above. Further, the rear rotation clamp 90R rotates in the second rotation direction R2 while simultaneously holding the rear ends of the first electric wire C1 and the second electric wire C2 as described above, and then rotates in the first rotation direction R1. As a result, the first electric wire C1 and the second electric wire C2 are twisted in one direction and then in the opposite direction. As a result, when the front rotary clamp 90F and the rear rotary clamp 90R release the first electric wire C1 and the second electric wire C2 thereafter, the first electric wire C1 and the second electric wire C2 may rotate in the opposite directions and come apart. To be prevented. The number of times of reverse rotation is not particularly limited, but the number of times of reverse rotation is smaller than the number of times of normal rotation here.

  In the present embodiment, the front rotary clamp 90F and the rear rotary clamp 90R are further controlled to rotate in the normal direction after rotating in the reverse direction as described above. Specifically, as described above, the front rotary clamp 90F rotates in the second rotation direction R2 while simultaneously holding the front ends of the first electric wire C1 and the second electric wire C2, and then the first electric wire C1 and the second electric wire C2. It rotates in the first rotation direction R1 while applying the predetermined tension T1. That is, the front rotation clamp 90F rotates in the first rotation direction R1 while the motor 103 performs the above-described torque control. Further, the rear rotation clamp 90R rotates in the first rotation direction R1 while simultaneously holding the rear ends of the first electric wire C1 and the second electric wire C2 as described above, and then rotates in the second rotation direction R2. As a result, the first electric wire C1 and the second electric wire C2 are twisted in one direction, then twisted in the opposite direction, and further twisted in one direction. As a result, the adhesion of the twisted first electric wire C1 and second electric wire C2 is improved.

  The front rotary clamp 90F and the rear rotary clamp 90R may be normally rotated again as described above and then further reversed, depending on the types of the first electric wire C1 and the second electric wire C2. That is, after the above operation, the front rotation clamp 90F may rotate in the second rotation direction R2 and the rear rotation clamp 90R may rotate in the first rotation direction R1 while the motor 103 performs the above-described torque control. In addition, such normal rotation and reverse rotation may be performed several times.

  By the way, when the front rotary clamp 90F and the rear rotary clamp 90R release the twisted electric wire CT while applying tension, the twisted electric wire CT contracts vigorously at the moment when the tension is applied, and there is a risk that it will be violent before being collected in the tray 110. . Therefore, the twisted electric wires CT may not be collected in the tray 110 in a straight state. Therefore, in the present embodiment, next, the control device 200 ends the torque control of the motor 103, moves the front rotary clamp 90F toward the rear rotary clamp 90R, and loosens the twisted wire CT. At this time, the control device 200 controls the position of the motor 103 so that the front rotation clamp 90F moves to a predetermined position. That is, the control device 200 positions the front rotary clamp 90F at a predetermined position.

  When the front rotary clamp 90F reaches a predetermined position, the front rotary clamp 90F and the rear rotary clamp 90R release the first electric wire C1 and the second electric wire C2. Then, the twisted first electric wires C1 and second electric wires C2, that is, the twisted electric wires CT are dropped and collected in the tray 110. Since no tension is applied to the twisted electric wire CT, the twisted electric wire CT falls downward while keeping the straight extension. Therefore, the twisted electric wires CT are collected in the tray 110 in a straight state.

  As described above, the twisted electric wire CT is manufactured from the long first electric wire C1 and the long electric wire C2.

  As described above, according to the wire twist device 3 according to the present embodiment, the torque control is performed on the motor 103 that drives the front rotary clamp 90F back and forth, and thus the twisting of the first wire C1 and the second wire C2 is performed. Along with this, the distance between the front rotary clamp 90F and the rear rotary clamp 90R is automatically adjusted, and the tension T of the first electric wire C1 and the second electric wire C2 is kept constant. The wire twist device 3 according to the present embodiment does not require an air cylinder that pulls the front rotary clamp 90F, and does not require a sensor that detects the position of the piston of the air cylinder, unlike the conventional technique. Therefore, the first electric wire C1 and the second electric wire C2 can be satisfactorily twisted together, and the number of parts can be reduced as compared with the related art.

  Further, according to the wire twist device 3 according to the present embodiment, after the rotation of the front rotary clamp 90F and the rear rotary clamp 90R is stopped, the position control of the motor 103 is performed so that the front rotary clamp 90F approaches the rear rotary clamp 90R. . Therefore, the first electric wire C1 and the second electric wire C2 are twisted and then loosened. Therefore, when the front rotary clamp 90F and the rear rotary clamp 90R release the twisted electric wire CT, it is possible to prevent the twisted electric wire CT from going wild. Therefore, the twisted electric wires CT can be favorably collected in the tray 110.

  Further, according to the wire twist device 3 according to the present embodiment, after the front rotary clamp 90F and the rear rotary clamp 90R release the twisted wire CT, the motor is arranged so that the front rotary clamp 90F moves to a predetermined initial position. The position control of 103 is performed. Therefore, the front rotation clamp 90F can automatically return to the initial position within a short time after releasing the twisted electric wire CT and hold the next first electric wire C1 and second electric wire C2. According to this embodiment, the time from the completion of the production of the twisted electric wire CT to the start of the production of the next twisted electric wire CT can be shortened, so that the tact time can be shortened.

  According to the electric wire twist device 3 according to the present embodiment, the front rotary clamp 90F and the rear rotary clamp 90R rotate in opposite directions after the first electric wire C1 and the second electric wire C2 are once twisted together. Therefore, when the front rotary clamp 90F and the rear rotary clamp 90R release the twisted electric wire CT, the first electric wire C1 and the second electric wire C2 are prevented from being untwisted by rotating in the opposite directions. Further, according to the wire twist device 3 according to the present embodiment, the front rotary clamp 90F and the rear rotary clamp 90R further rotate in the opposite directions and then again in the original directions. This improves the adhesion between the first electric wire C1 and the second electric wire C2. Therefore, according to the electric wire processing device 1 according to the present embodiment, a good twisted electric wire CT can be obtained.

  The wire twist device 3 according to the present embodiment includes a connecting mechanism including the connecting pin 104 of the slider 101 and the hole 105a of the connecting member 105, and the connecting mechanism connects the front transport clamp 80F and the front rotary clamp 90F. When the motor 103 drives the front rotation clamp 90F forward or backward in this state, the front conveyance clamp 80F moves together with the front rotation clamp 90F. Therefore, a dedicated actuator for driving the front conveyance clamp 80F forward or backward is unnecessary, and the number of parts can be reduced.

  Although one embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment and can be implemented in various other forms.

  In the above-described embodiment, the motor 69 connected to the slider 72 of the alignment clamp 70, the cylinder 88 connected to the slider 82 of the front transfer clamp 80F, the cylinder 88 connected to the slider 82 of the rear transfer clamp 80R, and the intermediate clamp 50. The cylinder 58 connected to the slider 52, the motor 103 connected to the slider 101 of the front rotary clamp 90F, the motor 99 connected to the front rotary clamp 90F, and the motor 99 connected to the rear rotary clamp 90R are aligned actuators, respectively. It is an example of the first transport actuator, the second transport actuator, the intermediate actuator, the drive actuator, the first rotary actuator, and the second rotary actuator, but the types of those actuators are not limited at all. As the actuator, either a cylinder or a motor can be used, and other actuators can also be used.

  In the above-described embodiment, the connecting mechanism that can switch between the state in which the front transport clamp 80F and the front rotation clamp 90F are coupled and the state in which they are separated is configured by the coupling pin 104 of the slider 101 and the hole 105a of the coupling member 105. However, the structure of the connecting mechanism is not limited at all. The coupling mechanism includes, for example, a mechanism including a first engaging portion and a second engaging portion that can be engaged with each other, a mechanism including a hook and a hooked member that can be engaged with the hook, and a mechanism including a magnet ( For example, a mechanism including a permanent magnet and an electromagnet).

  The wire end processing device 2 and the wire twisting device 3 may be integrally configured or may be separable. The wire end processing device 2 and the wire twist device 3 may have a common mount or may have different mounts. The wire end processing device 2 and the wire twisting device 3 may be integrally manufactured, or the wire twisting device 3 may be retrofitted to the existing wire end processing device 2.

3 Electric wire twist device 80F Front transport clamp (1st transport clamp)
80R Rear transport clamp (2nd transport clamp)
90F Front rotation clamp (1st rotation clamp)
90R Rear rotation clamp (2nd rotation clamp)
99 motors (first rotary actuator, second rotary actuator)
103 motor 200 control device C1 first electric wire C2 second electric wire

Claims (7)

A first rotary clamp for simultaneously holding one ends of the first electric wire and the second electric wire;
A second rotary clamp for simultaneously holding the other ends of the first electric wire and the second electric wire;
A first rotary actuator for rotating the first rotary clamp;
A second rotary actuator for rotating the second rotary clamp in a direction opposite to the rotation direction of the first rotary clamp;
A motor that drives the first rotary clamp in a direction to approach the second rotary clamp and in a direction to move away from the second rotary clamp,
The motor is configured to enable position control and torque control,
The tension of the first electric wire and the second electric wire is constant when the first rotary clamp and the second rotary clamp rotate while holding the first electric wire and the second electric wire. Equipped with a control device that controls the torque of the motor,
An electric wire twist device in which the distance between the first rotary clamp and the second rotary clamp is automatically adjusted by performing torque control of the motor .   The control device is configured to control the position of the motor such that the first rotary clamp approaches the second rotary clamp after the rotation of the first rotary clamp and the second rotary clamp is stopped. The electric wire twist device according to claim 1.   The control device controls the motor so that the first rotary clamp moves to a predetermined initial position after the first rotary clamp and the second rotary clamp release the first electric wire and the second electric wire. The electric wire twist device according to claim 1 or 2, which is configured to perform position control.   The control device performs a first rotation operation in which the first rotation clamp rotates in a first rotation direction and the second rotation clamp rotates in a second rotation direction that is a direction opposite to the first rotation direction, and thereafter, A second rotation operation in which the first rotation clamp rotates in the second rotation direction and the second rotation clamp rotates in the first rotation direction; and the first rotation actuator and the second rotation. The wire twist device according to any one of claims 1 to 3, which is configured to control an actuator.   After the second rotation operation, the control device performs a third rotation operation in which the first rotation clamp rotates in the first rotation direction and the second rotation clamp rotates in the second rotation direction. The electric wire twist device according to claim 4, which is configured to control the first rotary actuator and the second rotary actuator. After the third rotation operation, the control device performs a fourth rotation operation in which the first rotation clamp rotates in the second rotation direction and the second rotation clamp rotates in the first rotation direction. The wire twist device according to claim 5, wherein the wire twist device is configured to control the first rotary actuator and the second rotary actuator. A first transport clamp configured to be movable while simultaneously holding one ends of the first electric wire and the second electric wire, and delivering one end of the first electric wire and the second electric wire to the first rotary clamp;
A second transport clamp configured to be movable while simultaneously holding the other ends of the first electric wire and the second electric wire, and delivering the other end of the first electric wire and the second electric wire to the second rotary clamp. And
The first transport clamp is configured to be movable in a direction toward and away from the second transport clamp,
The direction in which the first rotary clamp approaches and moves away from the second rotary clamp is parallel to the direction in which the first transport clamp approaches and moves away from the second transport clamp,
The wire twist device according to any one of claims 1 to 5, further comprising a connection mechanism capable of switching between a state in which the first transport clamp and the first rotation clamp are connected and a state in which the first rotation clamp is separated from each other.

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