WO2013136578A1

WO2013136578A1 - Wire processing device

Info

Publication number: WO2013136578A1
Application number: PCT/JP2012/078581
Authority: WO
Inventors: 幸一郎後藤; 純一白川
Original assignee: 住友電装株式会社
Priority date: 2012-03-13
Filing date: 2012-11-05
Publication date: 2013-09-19
Also published as: JP2013191348A; EP2827345A1; CN104170030B; KR20140120369A; JP5853776B2; EP2827345A4; KR101674782B1; CN104170030A

Abstract

The purpose of the present invention is to suppress twisting of wire. This wire processing device is provided with: a wire supply unit; a length adjusting and feed mechanism unit that feeds wire from the wire supply unit while adjusting length; a cutting mechanism unit that cuts the wire; an end part processing unit that performs end part processing on the end part of the wire; a wire transport mechanism unit that grasps both ends of the wire and transports the same; and a wire end part turning mechanism unit. The wire end part turning mechanism unit turns the end part of the wire after the wire has been fed from the length adjusting and feed mechanism unit until the same has been discharged to a wire discharge position by the wire transport mechanism unit.

Description

Electric wire processing equipment

This invention relates to a technique for gripping and transporting both ends of an electric wire cut into a predetermined length.

A wire harness in a vehicle is manufactured by bundling electric wires with terminals. The terminal-attached electric wire is manufactured by drawing a long electric wire from the ring-shaped electric wire bundle, cutting it into a predetermined length, and further performing a stripping process of the covering portion at the end, a crimping process of the terminal, and the like.

In addition, as a manufacturing apparatus of the electric wire with a terminal, there exists a thing disclosed by patent document 1, for example.

JP 2009-152104 A

However, the long wires drawn out from the ring-shaped wire bundle may be twisted and the twisted wires may remain in the terminal-attached wires. When the terminal-attached electric wire in which the twist remains, the intermediate portion of the terminal-attached electric wire may be twisted into an 8-shape. When manufacturing a wire harness, since it is necessary to perform the bundling operation | work of the several electric wire with a terminal, etc., without the 8-shaped twist of an electric wire with a terminal, the manufacturing workability | operativity of a wire harness deteriorates.

Therefore, an object of the present invention is to suppress twisting of an electric wire.

In order to solve the above-described problem, an electric wire processing apparatus according to a first aspect includes an electric wire supply unit that continuously supplies electric wires, and a scale sending mechanism unit that sends out the electric wires from the electric wire supply unit while measuring the wires. A cutting mechanism section for cutting the electric wire sent from the scale sending mechanism section, an end processing unit for performing end processing on the end of the cut electric wire, and sending from the scale sending mechanism section An electric wire conveying mechanism that grips both ends of the cut electric wire and conveys it from the receiving position by the scale sending mechanism to the discharge position through the processing position by the end processing unit, and the end of the electric wire A wire end rotation mechanism that rotates the wire after the wire is sent from the scale feed mechanism before the wire is delivered to the discharge position by the wire transport mechanism.

A 2nd aspect is an electric wire processing apparatus which concerns on a 1st aspect, Comprising: The said electric wire edge part rotation mechanism part is the said edge after the electric wire is sent out from the said scale sending mechanism part. It is provided so as to be rotated before being conveyed to a processing position by the partial processing unit.

A 3rd aspect is an electric wire processing apparatus which concerns on a 1st or 2nd aspect, Comprising: The said electric wire edge part rotation mechanism part is for rotations which hold | grips the edge part of the electric wire sent from the said scale sending mechanism part A gripping rotation drive unit that rotates the gripping part for rotation, and the scale sending mechanism part further adjusts the scale after the end of the delivered wire is gripped by the gripping part for rotation. Then, the electric wire is sent out, and the gripping rotation drive unit rotates the gripping part for rotation during the adjustment by the adjustment sending mechanism unit.

A fourth aspect is an electric wire processing apparatus according to any one of the first to third aspects, wherein the electric wire end portion rotation mechanism portion is configured to rotate the end portion of the electric wire with a rotation amount corresponding to the length of the electric wire. It is intended to rotate.

According to the first aspect, the end of the electric wire is rotated after the electric wire is sent out from the scale sending mechanism unit and before being discharged to the discharge position by the electric wire transport mechanism unit. For this reason, the twist of an electric wire is suppressed.

According to the second aspect, since the end of the electric wire is rotated before the end of the electric wire is processed, the state after the end of the electric wire after the discharge is easily aligned.

According to the 3rd aspect, since the end part of an electric wire is rotated when the adjustment sending mechanism part is sending out adjusting an electric wire, the conveyance work of an electric wire can be performed rapidly.

According to the fourth aspect, the end of the electric wire can be rotated with an appropriate amount of rotation according to the length of the electric wire, and twist can be suppressed.

It is explanatory drawing which shows the electric wire with a terminal used as manufacture object. It is the schematic which shows the whole structure of an electric wire processing apparatus. It is a schematic front view which shows an electric wire edge part rotation mechanism part and an electric wire edge part delivery mechanism part. It is a schematic plan view which shows an electric wire end part rotation mechanism part and an electric wire end part delivery mechanism part. It is a flowchart which shows sending, a cutting | disconnection, delivery, and rotation process of an electric wire. It is explanatory drawing which shows operation | movement of an electric wire processing apparatus. It is explanatory drawing which shows operation | movement of an electric wire processing apparatus. It is explanatory drawing which shows operation | movement of an electric wire processing apparatus. It is explanatory drawing which shows a comparative example.

Hereinafter, the wire processing apparatus according to the embodiment will be described. FIG. 1 is an explanatory view showing a terminal-attached electric wire 10 manufactured by the electric wire processing apparatus according to the embodiment, and FIG. 2 is a schematic view showing the entire configuration of the electric wire processing apparatus.

<Overall configuration of wire processing device>
This electric wire processing apparatus 20 cuts the long electric wire 12 into a predetermined length, peels the covering portions at both ends of the electric wire 12 cut into a predetermined length, and attaches the terminal 14 to each core wire exposed at the both ends. It is an apparatus which manufactures the electric wire 10 with a terminal by crimping | bonding. In addition, a terminal may be crimped | bonded only to the edge part of the one side of the electric wire 12. FIG. Further, other processes such as a process of passing the electric wire 12 through a rubber plug may be performed.

The electric wire processing apparatus 20 includes an electric wire supply unit 22, a scale sending mechanism unit 24, a cutting mechanism unit 28,

end processing units

30a, 30b, and 34, an electric wire transport mechanism unit 40, and an electric wire end rotation mechanism unit. 50.

The electric wire supply part 22 is comprised so that the elongate electric wire 12 can be supplied continuously. Here, the long electric wires 12 are bundled in a ring shape, and the long electric wires 12 are continuously supplied by pulling out one end portion of the long electric wires 12 from the bundle 11. ing. The long electric wire 12 may be wound and accommodated in an electric wire receiving reel or the like and supplied from the electric wire receiving reel.

The scale sending mechanism unit 24 is configured to be able to send out the wires 12 from the wire supply unit 22 while adjusting them. More specifically, the scale sending mechanism 24 includes a sending mechanism 25 and a scale 26.

The delivery mechanism unit 25 includes, for example, a pair of delivery rollers 25a that sandwich the electric wire 12, and a rotation drive unit 25b such as a motor that rotationally drives at least one of the delivery rollers 25a. And the electric wire 12 is pulled out from the electric wire supply part 22 by rotating the sending roller 25a by the said rotational drive part 25b, and is sent ahead. The operation of the sending mechanism unit 25 is controlled by a control unit 80 described later.

The adjusting unit 26 includes a pair of adjusting rollers 26a that sandwich the electric wire 12, and a rotation amount detecting unit 26b such as a rotary encoder connected to at least one rotating shaft portion of the adjusting roller 26a. Here, the adjustment unit 26 is provided closer to the electric wire supply unit 22 than the delivery mechanism unit 25. The adjusting unit 26 may be provided on the downstream side of the delivery mechanism unit 25. When the electric wire 12 is sent out and the pair of adjusting rollers 26a are driven to rotate as the electric wire 12 is pulled out, the rotation amount is detected by the rotation amount detection unit 26b. The rotation amount detection signal from the rotation amount detection unit 26b is given to the control unit 80.

It should be noted that a strainer in which a plurality of rollers are alternately arranged is incorporated in the scale sending mechanism unit 24. As the electric wire 12 passes through the strainer, bending wrinkles are removed to some extent.

The cutting mechanism unit 28 is configured to be able to cut the electric wire 12 sent from the scale sending mechanism unit 24. Here, the cutting mechanism unit 28 includes a pair of cutting blades 29a capable of sandwiching the electric wire 12 sent from the scale sending mechanism unit 24, and an advancing / retreating driving unit that moves the pair of cutting blades 29a toward and away from each other. Including. The tip ends of the pair of cutting blades 29a are formed in a blade shape that cuts into a V shape. Then, in response to a command from the control unit 80, when the wire 12 having a length corresponding to the length of the terminal-attached electric wire 10 to be manufactured is sent by the scale sending mechanism 24, a pair of cutting blades As the wire 29a moves closer, the electric wire 12 is cut to a predetermined length.

The

end processing units

30 a, 30 b, 34 are units that perform end processing on the end of the predetermined length of the electric wire 12 cut from the regulated electric wire 12.

Here, it is assumed that the end processing unit 30a is a rubber plug insertion unit 30a, the end processing unit 30b is a peeling unit 30b, and the end processing unit 34 is a terminal crimping unit 34.

The rubber plug insertion unit 30 a is a unit for inserting a rubber plug into the end portion of the electric wire 12, and is provided on the downstream side of the scale feeding mechanism portion 24 and the cutting mechanism portion 28 in the conveyance direction P of the electric wire 12. ing. The rubber plug insertion unit 30a may be one that inserts rubber plugs into both ends of the electric wire 12, or one that inserts rubber plugs only at one end.

The peeling unit 30b is a unit that peels off the covering portion at the end of the electric wire 12 and exposes the core wire portion at the end, and is downstream of the rubber plug insertion unit 30 in the conveying direction P of the electric wire 12. On the side. As such a peeling unit 30b, for example, the tip portions of the pair of peeling blades are moved close enough to only bite into the covering portion of the electric wire 12, and in this state, the pair of peeling blades are relatively opposed to the end portion side of the electric wire 12. By moving, the covering portion is peeled off. At this time, the pair of peeling blades may be moved, or the electric wires may be moved.

The terminal crimping unit 34 is a unit for crimping the terminal 14 to the core wire exposed at the end of the electric wire 12, and is provided on the downstream side of the peeling unit 30 b in the conveyance direction P of the electric wire 12. The terminal crimping unit 34 may be a unit that crimps a terminal to both ends of the electric wire 12 or may be a unit that crimps a terminal only to one end.

In addition, a part of end

part processing unit

30a, 30b, 34 may be abbreviate | omitted. Moreover, the example of an edge part processing unit is not restricted above, The various edge part processing apparatuses which process with respect to the edge part of the electric wire 12 can be used.

The wire conveyance mechanism unit 40 grips both ends of the predetermined length of the electric wire 12 that is sent from the scale sending mechanism unit 24 and cut by the cutting mechanism unit 28, and the predetermined length of the electric wire 12 is transferred to the predetermined length. Along the conveying direction P, the receiving position P1 by the scale sending mechanism 24 is changed to the predetermined discharging position P5 through the processing positions P2a, P2b, P3 by the

end processing units

30a, 30b, 34, and the discharging delivery position P4. It is comprised so that it may convey toward.

More specifically, the electric wire conveyance mechanism unit 40 includes a first electric wire conveyance mechanism unit 42 and a second electric wire conveyance mechanism unit 46.

The first electric wire conveyance mechanism unit 42 is a device that conveys the electric wire 12 from the receiving position P1 to the discharge delivery position P4 through the processing positions P2a, P2b, and P3. This is a device for conveying the electric wire 12 from the delivery position P4 for discharge toward the discharge position P5.

The 1st electric wire conveyance mechanism part 42 is provided with the some electric wire holding part 44. FIG. The plurality of electric wire gripping portions 44 are attached at intervals to a conveying circulation belt disposed so as to pass through the receiving position P1, the processing positions P2a, P2b, and P3 and the discharging delivery position P4. The conveying circulation belt is wound around a pair of rotating pulleys or a pair of gears provided at both ends in the conveying direction P passing through the receiving position P1, the processing positions P2a, P2b, P3 and the discharging delivery position P4. By rotating the rotation pulley or gear by a rotation drive unit such as a motor, the transport circulation belt circulates and rotates through the receiving position P1, the processing positions P2a, P2b, P3 and the discharge delivery position P4. Each wire gripping portion 44 is configured by an electromagnetic chuck using a solenoid or a chuck using an air cylinder, and the end of the wire 12 is gripped and released by opening and closing the pair of gripping claws 44a. It is configured to be possible.

The plurality of electric wire grippers 44 are moved so as to pass through the receiving position P1, the processing positions P2a, P2b, P3 and the discharge delivery position P4 by the circulation rotation of the conveying circulation belt, and each position P1, P2a, In P2b, P3, and P4, each wire gripping portion 44 is appropriately opened and closed to perform gripping and release operation of the wire 12, so that the wire 12 can be received, transported, discharged, and further processed on the end of the wire 12. Applied.

Here, one of the pair of wire gripping portions 44 among the plurality of wire gripping portions 44 is located at the receiving position P1 that is a sending position by the scale sending mechanism portion 24 and the cutting mechanism portion 28, and the pair of wire gripping portions 44 With the other end of the portion 44 positioned on the downstream side thereof, both ends of the electric wire 12 that has been sent from the scale sending mechanism portion 24 and the cutting mechanism portion 28 and cut to a predetermined length are gripped by the pair of wire gripping portions 44. Is done. In this state, an intermediate portion of the predetermined length of the electric wire 12 hangs in a U shape on the opposite side of the scale sending mechanism portion 24 and the cutting mechanism portion 28. The predetermined length of the electric wire 12 is conveyed in a state in which both end portions are gripped by the pair of wire gripping portions 44 and an intermediate portion thereof is suspended in a U shape. In addition, the delivery operation | movement of the electric wire 12 to the pair of electric wire holding parts 44 from the scale sending mechanism part 24 and the cutting | disconnection mechanism part 28 is further demonstrated later.

Control of the feeding operation of each wire gripping portion 44 and the gripping and releasing operation of each wire gripping portion 44 by the wire transport mechanism portion 40 is also performed in response to a command from the control unit 80.

Here, the transport operation is performed as follows. That is, when the pair of wire gripping portions 44 moves along the transport direction P in the state where the both ends of the predetermined length of the electric wire 12 are gripped at the receiving position P1, and moves to the processing position P2a, the both end portions are It is directed to the end processing unit 30a. In this state, the edge processing by the edge processing unit 30a is performed. Subsequently, at the processing position P2b, a peeling processing by the end processing unit 30b is performed. Further, when the pair of wire gripping portions 44 moves to the processing position P3, both end portions thereof are directed to the end portion processing unit 34. In this state, end processing by the end processing unit 34 is performed.

Thereafter, the pair of wire gripping portions 44 moves along the transport direction P to the delivery position P4 for discharge.

The second electric wire transport mechanism 46 includes a pair of discharge / delivery gripping portions 47 and a reciprocating drive portion 48 for delivery. The pair of grips 47 for discharging / delivering is configured by an electromagnetic chuck using a solenoid or a chuck using an air cylinder. The pair of gripping claws 47a are opened and closed to grip the end of the electric wire 12. And it is comprised so that holding | grip release is possible. The reciprocating drive unit for delivery 48 is constituted by a linear actuator such as an air cylinder or a linear motor, and the pair of discharge delivery grips 47 are reciprocated between the delivery delivery position P4 and the delivery position P5. Let

Here, at the discharge position P5, a pair of discharge holding portions 39 capable of holding a plurality of ends of the electric wires 12 are provided. When the pair of wire gripping portions 44 moves to the delivery position P4 for discharging, both ends of the electric wire 12 gripped by the pair of wire gripping portions 44 are gripped by the pair of discharge delivery gripping portions 47. Thereafter, by driving the delivery reciprocating drive unit 48, the pair of discharge delivery gripping parts 47 moves from the delivery delivery position P 4 to the delivery position P 5, so that both ends of the electric wire 12 become the pair of ejection holding parts 39. Deliver.

By performing the above process continuously, a plurality of the terminal-attached electric wires 10 are continuously manufactured, and the continuously manufactured terminal-attached electric wires 10 are paired by the second electric wire transport mechanism 46. It is transferred to the holding unit 39 for use. When a predetermined number of the terminal-attached electric wires 10 are transferred to the pair of discharge holding portions 39, the predetermined number of electric wires with the terminals 10 are manually bundled by an operator or the like. Transportation to the harness manufacturing site is performed.

<Wire end rotation mechanism>
3 is a schematic front view showing the wire end rotation mechanism 50 and the wire end delivery mechanism 60, and FIG. 4 is a schematic plan view showing the wire end rotation mechanism 50 and the wire end delivery mechanism 60. As shown in FIG. is there.

That is, the electric wire processing device 20 is an electric wire that rotates the end of the electric wire 12 after the electric wire 12 is sent out from the scale sending mechanism 24 until it is discharged to the discharge position P5 by the electric wire transport mechanism 40. An end rotation mechanism unit 50 is provided.

Here, the electric wire end rotation mechanism unit 50 is more until the electric wire 12 is transported to the processing positions P2a, P2b, P3 by the

end processing units

30a, 30b, 34 after the electric wire 12 is sent out from the scale sending mechanism unit 24. Specifically, when the wire 12 is adjusted after the end of the wire 12 in the sending direction is fed from the scale sending mechanism 24 and is gripped by the wire gripping portion 44, The end portion is configured to rotate.

First, a configuration for sending the end of the electric wire 12 on the leading end side in the sending direction from the scale sending mechanism unit 24 and holding it by the electric wire holding unit 44 will be described.

That is, the wire end delivery mechanism 60 is provided at a position corresponding to the receiving position P1. The wire end delivery mechanism 60 is configured to grip the end of the wire 12 delivered from the scale delivery mechanism 24 and deliver it to the wire end rotation mechanism 50.

More specifically, the electric wire end portion delivery mechanism portion 60 includes a delivery grip portion 62 and a delivery grip portion moving portion 64.

The delivery gripping part 62 is configured by an electromagnetic chuck using a solenoid or a chuck using an air cylinder. The pair of gripping claws 62a are driven to open and close to grip and release the end of the electric wire 12. It is configured to be possible.

The delivery gripper moving unit 64 moves the delivery gripper 62 from the position T1 (see FIG. 4) that grips the end of the electrical wire 12 that is sent from the scale sending mechanism 24 through the cutting mechanism 28. It is comprised so that it may move to position T2 (refer FIG. 6) facing the edge part rotation mechanism part 50. FIG.

More specifically, the delivery gripper moving unit 64 includes a rotation driving unit 64a and a turning arm 64c.

The rotation drive unit 64a is constituted by a motor or the like, and is supported in a suspended state above a position between the positions T1 and T2 by a device frame (not shown). A rotation shaft portion 64b is provided downward from the lower end portion of the rotation drive portion 64a.

The swivel arm 64c is formed as a long member having a length that is about half the distance connecting the positions T1 and T2. One end of the turning arm 64c is connected to the rotating shaft part 64b in a posture in which the turning arm 64c is horizontal. And between the 1st attitude | position in which the other end part of the turning arm 64c is arrange | positioned above the position T1, and the 2nd attitude | position in which the other end part of the turning arm 64c is arrange | positioned above the position T2. The revolving arm 64c revolves around the rotating shaft portion 64b (here, revolves 180 degrees).

Also, a drooping arm 64d is suspended from the other end of the swing arm 64c, and a delivery gripping portion 62 is attached to the lower end of the drooping arm 64d. Then, with the swing arm 64c in the first posture, the delivery grip 62 is disposed at the position T1, and with the swing arm 64c in the second posture, the delivery grip 62 is disposed at the position T2. It has come to be.

The wire end delivery mechanism 60 delivers the end of the wire 12 as follows. That is, the electric wire 12 is sent out from the scale sending mechanism 24 in a state where the delivery grip 62 is disposed at the position T1. And if the electric wire 12 is sent out until the edge part of the electric wire 12 passes between the pair of holding claws 62a of the holding grip 62 for delivery, the sending of the electric wire 12 is stopped. In this state, the pair of gripping claws 62 a are closed, and the end portion of the electric wire 12 is gripped by the delivery gripping portion 62.

Thereafter, when the turning arm 64c is rotated from the first posture to the second posture by driving the rotation driving portion 64a, the delivery gripping portion 62 moves to the position T2 and is located at a position facing the wire end portion rotation mechanism portion 50. Arranged. During the turning of the turning arm 64c, the scale sending mechanism 24 is in a state in which the electric wire 12 can be drawn out, or in a state in which the electric wire 12 is sent out in accordance with the drawing speed and the drawing amount of the electric wire by the turning.

In the state where the delivery grip 62 is moved to the position T2, the end of the electric wire 12 gripped by the delivery grip 62 is arranged to face the wire end rotation mechanism 50, and the wire end rotation mechanism The part 50 can grip the end of the electric wire 12.

The wire end rotation mechanism unit 50 includes a rotation gripping part 52 and a gripping rotation drive part 54.

The rotation gripping part 52 is configured by an electromagnetic chuck using a solenoid or a chuck using an air cylinder. The rotation gripping part 52 is sent from the scale sending mechanism part 24 by opening and closing the pair of gripping claws 52a. The end portion of the electric wire 12 delivered by the electric wire end portion delivery mechanism 60 can be gripped and released.

The grip rotation drive unit 54 is configured to be able to rotate the rotation grip unit 52. More specifically, the grip rotation driving unit 54 is configured by a motor or the like, and is provided at the position T2 on the opposite side of the wire end portion delivery mechanism unit 60 with the wire gripping portion 44 interposed therebetween. ing. At this position, the grip rotation driving unit 54 is supported by a device frame (not shown) in a horizontal posture facing the position T2. A rotation shaft portion 54b is provided at an end portion of the gripping rotation driving portion 54 facing the position T2. The rotating grip 52 is attached to the rotating shaft 54b. In this attached state, the tip ends of the pair of gripping claws 62a are directed to the position T2 side. Therefore, when the delivery gripping part 62 moves to the position T2, the wire 12 protruding from the delivery gripping part 62 The end portion is disposed between the pair of gripping claws 62a. In this state, when the pair of gripping claws 62a are closed, the end portion of the electric wire 12 is gripped by the pair of gripping claws 62a. In this state, when the gripping rotation part 52 is rotated by driving the gripping rotation driving part 54, the end of the electric wire 12 is rotated accordingly. Note that an encoder or the like is incorporated in the gripping rotation drive unit 54, and a signal indicating the number of rotations is given to the control unit 80.

The operation of the wire end rotation mechanism 50 and the wire end delivery mechanism 60 is controlled by any control unit 80.

Here, the control unit 80 is a general microcomputer including a CPU, a ROM, a RAM, and the like, and controls the operation of the electric wire processing apparatus 20 according to a software program stored in advance and a predetermined set value. In particular, here, after the end portion of the electric wire 12 sent out from the scale sending mechanism unit 24 is gripped by the rotation gripping unit 52, the control unit 80 further measures the electric wire while the scale sending mechanism unit 24 further measures. 12 and the gripping rotation driving unit 54 performs operation control so as to rotate the gripping unit 52 for rotation during the scale sending. It should be noted that some or all of the functions performed by the control unit 80 may be realized by hardware using a dedicated logic circuit or the like.

The sending, cutting, delivery and rotation processing of the electric wire 12 will be described with reference to the flowchart shown in FIG.

First, in the initial state, the gripping part 52 for rotation is located at the position T1, and the end of the electric wire is disposed at a position beyond the part between the gripping parts 52 for rotation.

From this state, when manufacturing the terminal-attached electric wire 10 using the electric wire 12 having a predetermined length, the control unit 80 sends an electric wire end delivery operation command to the electric wire end delivery mechanism 60 as shown in step S1. give. In addition, the length dimension of the electric wire 12 is a dimension according to the length of the electric wire 10 with a terminal used as manufacture object, and is a dimension preset by the manufacturing operator. According to the above directives. The wire end portion delivery mechanism portion 60 closes the pair of gripping claws 62a to grip the end portion of the wire 12, and turns the turning arm 64c by driving the rotation driving portion 64a to move the delivery gripping portion 62 from the position T1. Move to position T2. Then, the end of the electric wire 12 passes between the pair of gripping claws 44 a of the wire gripping portion 44 and is disposed between the pair of gripping claws 52 a of the rotation gripping portion 52.

In the next step S2, the control unit 80 gives an electric wire end receiving operation command to the electric wire end rotating mechanism 50 and the electric wire end delivery mechanism 60. Then, the wire end portion rotation mechanism unit 50 closes the pair of gripping claws 52a and grips the end portion of the electric wire 12 by the rotation gripping portion 52, and the wire end portion delivery mechanism unit 60 opens the pair of gripping claws 62a. The grip of the end of the electric wire 12 is released.

In the next step S <b> 3, the control unit 80 gives an electric wire end rotation operation start command to the electric wire end rotation mechanism unit 50 and also gives an electric wire scale sending operation start command to the scale sending mechanism unit 24. Then, the electric wire end rotation mechanism unit 50 starts the rotation of the rotation gripping unit 52 by driving the gripping rotation driving unit 54 (see FIG. 7). The scale sending mechanism 24 further sends the electric wire 12 while adjusting (see FIG. 7). The delivered electric wire 12 is disposed so as to hang down in a U-shape.

In the next step S4, the control unit 80 determines whether or not the rotation number exceeds a predetermined rotation number based on the rotation number signal from the gripping rotation driving unit 54. The number of rotations here may be set in advance by a worker or the like as a constant value regardless of the length of the target electric wire 12, or may be rotated according to the length of the target electric wire 12. It may be a value determined as a number. In the latter case, a predetermined coefficient may be set by an operator or the like, and a value obtained by multiplying the length dimension of the electric wire 12 to be processed by the predetermined coefficient may be determined as the predetermined rotation speed. In addition, a table in which a rotation number corresponding to the length dimension is associated with a candidate value of the length dimension of the electric wire 12 to be processed is created in advance by an operator or the like, and the control unit 80 stores the table. , The number of rotations according to the length dimension of the electric wire 12 may be determined. These predetermined coefficients or the rotational speed to be registered in the table can be set empirically and experimentally. Usually, the twist generated in the electric wire 12 is considered to be caused by the electric wire being bundled in a ring shape. Therefore, the larger the length dimension of the electric wire 12 is, the more the entire electric wire 12 is generated. It can be considered that the amount of twist is large. Therefore, the rotation amount to be rotated is preferably set as a value having a positive correlation (for example, a proportional relationship) with respect to the length dimension of the electric wire 12. The amount of rotation may be determined according to other types of electric wires (thickness, material, etc.), bundle state (bundle diameter), and the like. If it is determined in step S4 that the rotation speed of the gripping rotation drive unit 54 exceeds the predetermined rotation speed, the process proceeds to the next step S5. At this time, the end of the electric wire 12 is transferred from the rotation gripping portion 52 to the delivery gripping portion 62. In addition, when the rotation speed of the holding | grip rotation drive part 54 and the predetermined rotation speed are the same, this step S4 may be repeated or it may progress to following step S5.

In the next step S5, the control unit 80 determines whether or not the feeding of the predetermined length of the electric wire 12 has been completed based on the rotation amount detection signal from the rotation amount detection unit 26b of the scale roller 26a of the scale delivery mechanism unit 24. Is determined. If it determines with YES, it will progress to following step S6.

In the next step S6, the control unit 80 gives a wire cutting command to the cutting mechanism 28. Thereby, the electric wire 12 of predetermined length is cut off from the elongate electric wire 12 (FIG. 8). At the time of this cutting, it is preferable to grip the end portion of the electric wire 12 by the electric wire holding portion incorporated in the cutting mechanism portion 28.

In step S6, the control unit 80 gives an instruction to grip both ends of the electric wire 12 to the electric wire gripping portions 44 at the positions T1 and T2 among the plurality of electric wire gripping portions 44 of the electric wire transport mechanism portion 40. Then, the pair of electric wire gripping portions 44 grips both end portions of the electric wire 12 having a predetermined length. Note that portions of the wire gripping portion 62 and the cutting mechanism portion 28 of the wire end portion delivery mechanism 60 that grip the wire end are supported by the lift drive mechanism so as to be driven up and down, respectively. The electric wire gripping portion of the cutting mechanism portion 28 may be lowered when the electric wire 12 is delivered to the electric wire gripping portion 44 and may be raised in other states. After this, the delivery gripping part 62 of the wire end delivery mechanism part 60 returns to the position T1.

Thereby, both ends of the predetermined length of the electric wire 12 are gripped by the pair of electric wire gripping portions 44 at the positions T1 and T2. By sequentially moving the pair of electric wire gripping portions 44 in the transport direction P, as described above, the end processing of the electric wires 12 gripped by the pair of electric wire gripping portions 44 is performed, and a predetermined process is performed. It is discharged to the discharge position P5.

According to the electric wire processing apparatus 20 configured as described above, the end of the electric wire 12 is discharged after the electric wire 12 is sent out from the scale sending mechanism 24 to the discharge position P5 by the electric wire carrying mechanism 40. To be rotated. For this reason, the twist of the electric wire 12 after a process is suppressed. Therefore, when both ends of the electric wire 12 are pulled, the wire 12 extends in a straight line, and subsequent wire harness manufacturing operations and the like can be performed smoothly.

Incidentally, when the end of the electric wire 12 is not rotated, it becomes as shown in FIG. That is, when the electric wire 12 is pulled out from the ring-shaped bundle 11, the electric wire 12 remains twisted. Twisting remains in the electric wire 12 that has been cut, and there is a risk of twisting into an 8-shaped shape. The electric wire 12 is conveyed along the conveying direction P while the both ends thereof are held by the electric wire holding portion 44, and discharged at the discharge position P5. If the said electric wire 12 is processed continuously, the electric wire 12 will be piled up in the discharge | emission position P5 with the state twisted in the figure 8 shape. If both ends of the plurality of electric wires 12 are pulled together, a small twisted portion in the shape of a figure 8 is formed in the middle portion of the electric wires 12. When manufacturing a wire harness using this electric wire 12, it is necessary to eliminate the small twisted portion in the shape of figure 8 with respect to each electric wire 12. In some cases, twisted wrinkles may remain in the middle portion of the electric wire 12.

In the electric wire processing apparatus 20, the twist as described above is suppressed.

Moreover, in this electric wire processing apparatus 20, before processing the end part of the electric wire 12, specifically, before performing terminal crimping, the end part of the electric wire 12 is rotated and the twist is eliminated. For this reason, the direction of the edge part of the electric wire 12 after a process is easy to align. Specifically, it is preferable that the terminals 14 have an asymmetric shape in the circumferential direction, and are aligned in a certain direction in consideration of the workability of inserting the connector into the cavity. Therefore, if the end of the electric wire 12 is rotated before the terminal 14 is crimped to the end of the electric wire 12 to eliminate the twist, the orientation of the terminal 14 after the terminal is crimped is maintained in the direction when the terminal is crimped. easy. Thereby, the direction of the terminal of the edge part of the electric wire 12 after a process becomes easy to align, and a subsequent operation | work can be performed smoothly.

In addition, since the end of the electric wire 12 is rotated while the electric wire 12 is being sent out, the work for conveying the electric wire 12 can be performed quickly. That is, during the adjustment work of the electric wire 12, the end of the electric wire 12 in the sending direction is not conveyed by the electric wire conveying mechanism 40 or the like but is disposed at a fixed position. Therefore, by rotating the end portion of the electric wire 12 at this timing, it is possible to suppress the influence on the conveyance processing of the electric wire 12 and eliminate the twist of the electric wire 12.

However, it is not essential that the rotation mechanism 50 is provided at the above position. The rotation mechanism unit 50 is provided at a position where the end of the electric wire 12 is rotated after the electric wire 12 is delivered from the scale delivery mechanism unit 24 until it is discharged to the discharge position P5 by the electric wire transport mechanism unit 40. Just do it. For example, the end portion of the electric wire 12 may be received from the electric wire gripping portion 42 during the conveyance by the electric wire conveyance mechanism portion 40 and the end portion may be rotated. Further, the same configuration as the rotation mechanism unit 50 may be incorporated in the electric wire gripping portion 42 or the discharge / delivery gripping portion 47 itself, and the end portion of the electric wire may be rotated during gripping by them.

Note that the rotation of the end of the electric wire 12 and the scale sending by the scale sending mechanism 24 need not be performed simultaneously. The rotation period of the edge part of the electric wire 12 should just overlap with at least one part of the scale sending period by the scale sending mechanism part 24. FIG.

Moreover, since the end of the electric wire 12 is rotated by the amount of rotation corresponding to the length of the electric wire 12, the end of the electric wire 12 is rotated by an appropriate amount corresponding to the length of the electric wire 12, and the twist is It can be eliminated.

Although the present invention has been described in detail as described above, the above description is illustrative in all aspects, and the present invention is not limited thereto. It is understood that countless variations that are not illustrated can be envisaged without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 12 Electric wire 20 Electric wire processing apparatus 22 Electric wire supply part 24 Adjustment sending mechanism part 25 Delivery mechanism part 26 Adjustment part 28

Cutting mechanism part

30a, 30b, 34 End processing unit 39 Ejection holding part 40 Electric wire conveyance mechanism part 44 Electric wire gripping Portion 50 Electric wire end rotation mechanism portion 52 Rotation gripping portion 54 Grasping rotation drive portion 60 Electric wire end portion transfer mechanism portion 80 Control unit P Transport direction P1 Receiving position P2a, P2b, P3 Processing position P5 Discharging position

Claims

An electric wire supply section for continuously supplying electric wires;
A scale sending mechanism unit that sends out the electric wire from the electric wire supply unit,
A cutting mechanism for cutting the electric wire sent from the scale sending mechanism,
An end processing unit that performs end processing on the end of the cut electric wire;
An electric wire that grips both ends of an electric wire that has been sent and cut by the scale sending mechanism and transports it from a receiving position by the scale sending mechanism to a discharge position through a processing position by the end processing unit A transport mechanism,
An electric wire end rotating mechanism that rotates the end of the electric wire after the electric wire is sent out from the scale sending mechanism before the electric wire carrying mechanism is discharged to the discharge position;
An electric wire processing apparatus comprising:
The wire processing device according to claim 1,
The electric wire end rotating mechanism is provided to rotate the end of the electric wire after the electric wire is sent from the scale sending mechanism until it is conveyed to a processing position by the end processing unit. Electric wire processing equipment.
The wire processing device according to claim 1 or 2,
The wire end rotation mechanism unit includes a rotation gripping unit that grips an end of an electric wire sent from the scale sending mechanism unit, and a gripping rotation drive unit that rotates the rotation gripping unit,
After the end of the sent wire is gripped by the gripping part for rotation, the adjustment sending mechanism unit sends out the wire while further adjusting the scale,
The gripping rotation driving unit is an electric wire processing apparatus that rotates the gripping part for rotation during the adjustment by the adjustment sending mechanism unit.
The electric wire processing apparatus according to any one of claims 1 to 3,
The electric wire end rotation mechanism unit is an electric wire processing apparatus that rotates an end portion of an electric wire by a rotation amount corresponding to the length of the electric wire.