JPH0688094U - Terminal crimping device wire guide - Google Patents

Abstract

(57) [Summary] [Purpose] To correct the bending of the wire when crimping the terminal by sandwiching the wire and the terminal between the upper mold and the lower mold. [Structure] A pre-crimping centering guide plate 132 for guiding the end of the electric wire before crimping the terminal is attached to the lower mold 50.
In the pre-crimp centering guide plate 132, a plurality of peaks 132a and valleys 132c for correcting the bending of the ends of the electric wires before crimping the terminals are continuously formed in correspondence with the arrangement intervals of the electric wires W. [Effect] Mountain 13 of centering guide plate 132 before crimping
As a result of the bending of the end of the electric wire before the terminal crimping being corrected by the 2a and the valley 132c, it is possible to prevent the end of the electric wire before the terminal crimping from bending and interfering with the end of the electric wire to be crimped. Therefore, accurate terminal crimping is possible.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an electric wire guide for guiding an electric wire to a terminal crimping device that crimps a terminal to an end portion of an electric wire forming a wireness.

[0002]

[Prior art]

 Generally, in the process of manufacturing a wire harness that is composed of a plurality of covered electric wires bundled together, there is a scale cutting step of measuring the electric wires and cutting them into a predetermined length, and a skin covering the ends of the electric wires. Includes a stripping process to strip the terminal, a terminal crimping process to crimp a terminal to the end of the stripped wire, a terminal insertion process to insert the terminal into the connector housing, and a binding process to bundle the wires with the connector attached. Has been.

An apparatus used in the terminal crimping step (hereinafter, referred to as “terminal crimping apparatus”) includes a lower die placed on a press table and an upper die placed so as to face the lower die. A crimp terminal is placed on the lower die, the end of the wire is placed on this terminal, and the terminal is crimped to the end of the wire by displacing the upper die toward the lower die. Has been done.

In a typical device of this type, a plurality of electric wires arranged at predetermined intervals are held on a pass line passing between the upper mold and the lower mold by a predetermined electric wire holding means, By intermittently carrying the wire holding means along the path line, the ends of the wires to which the terminals are to be crimped are sequentially supplied to the intermediate position between the upper mold and the lower mold. In synchronism with this, terminals connected in strips by carriers are sequentially supplied to the lower mold along the pass line. When the upper mold is displaced toward the lower mold after the electric wires and terminals are supplied, the electric wires come into contact with the upper mold and are guided to the terminals on the lower mold during the displacement of the upper mold. From this state, by displacing the upper mold toward the lower mold, the carrier connecting the terminals is cut, the insulation barrel of the terminal is deformed, and the terminal is crimped to the end of the wire. It By repeating such an operation continuously, terminal crimping is automatically achieved in sequence on the supplied wire.

[0005]

[Problems to be solved by the device]

 Generally, the end of the electric wire to which the terminal is crimped is held in a free state so as to protrude from the electric wire holding means. The protruding end of the electric wire cannot be crimped to the terminal unless it extends straight from the electric wire holding means. However, the free end of the wire bends easily. Since the electric wires are arranged on the pass line at narrow intervals (for example, 10 mm intervals), when the end of the electric wire before the terminal crimping located on the supply side of the electric wire to be crimped is bent, The end of the wire before crimping the terminal may interfere with the end of the wire to be crimped. If the terminals are crimped in this state, crimping failure will occur.

That is, in the conventional terminal crimping device, accurate terminal crimping may not be performed due to the bending of the electric wire, which causes a decrease in productivity. In view of the above, the present invention aims to provide an electric wire guide for a terminal crimping device that corrects the bending of the electric wire and enables accurate terminal crimping.

[0007]

[Means for Solving the Problems]

 To achieve the above object, the wire guide of the terminal crimping device according to claim 1 of the present invention is aligned with a predetermined interval and is conveyed on a pass line passing between the upper mold and the lower mold. It guides the wire to a terminal crimping device that deforms the terminal by sandwiching the wire and the terminal to be crimped at the end of the wire between the upper mold and the lower mold and crimps the end of the wire. It is attached to the lower mold and is located on the supply side of the wire where the terminals are crimped. The pre-crimping centering guide means in which peaks and valleys are continuously formed is included.

The wire guide of the terminal crimping device according to claim 2 is the wire guide of the terminal crimping device according to claim 1, wherein the pre-crimping centering guide means is attached to the tip of the wire so as to come into contact with the insulation part of the terminal. They are placed close to each other.

[0009]

[Action]

 In the electric wire guide of the terminal crimping device according to claim 1, the end portion of the electric wire before the terminal crimping, which is located on the supply side of the electric wire on which the terminal crimping is performed, has a plurality of peaks provided on the pre-crimping centering guide means. And the valley corrects the bend. As a result, it is possible to prevent the end of the electric wire before crimping the terminal from bending and interfering with the end of the electric wire to be crimped.

In the wire guide of the terminal crimping device according to the second aspect, the centering guide step before crimping is arranged close to the tip of the wire so as to come into contact with the insulation portion of the terminal. The electric wire before crimping the terminal is held almost straight between the peaks and valleys of the pre-crimping centering guide means.

[0011]

【Example】

 Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a perspective view showing an overall configuration of a terminal crimping system S according to an embodiment of the present invention. Referring to the figure, the terminal crimping system S of the present embodiment intermittently conveys a wiring board 20 on which a plurality of electric wires W are arranged in a predetermined pattern on a workbench 10 in the direction of arrow R1. And a plurality of terminal crimping devices M1, M2, M3, M4 for crimping different types of terminals. The end of the electric wire is stripped by a certain length by a peeling device (not shown) before being guided to each of the terminal crimping devices M1 to M4.

The wiring board 20 holds the ends of the electric wires W arranged at the side edges facing the terminal crimping devices M1 to M4 at regular intervals, and the detailed configuration thereof will be described later. The transport mechanism 30 has a conventionally known structure, and a description of its specific configuration will be omitted. The terminal crimping devices M1 to M4 are arranged along the transportation path of the wiring board 20, and the detailed configuration thereof will be described later. The terminal crimping devices M1 to M4 are collectively referred to as "terminal crimping device M".

FIG. 6 is a plan view showing the configuration of the wiring board 20. With reference to the figure, the wiring board 20 includes a pin board 21 and a base plate 22 that holds the pin board 21 and that is transported by a transport mechanism 30 (see FIG. 2). A plurality of wiring pins 23 are erected on the surface of the pin board 21 so as to correspond to a desired wiring pattern. Therefore, the electric wire W is wound around the wiring pin 23 on the pin board 21 by a wiring device (not shown) in order, so that the electric wire W is laid according to a desired wiring pattern. .

The base plate 22 is provided with a plurality of electric wire clamps 24 that hold the ends of the electric wires W. Each electric wire clamp 24 has a structure in which one electric wire W is sandwiched between the electric wire clamps 24, and is arranged at regular intervals on a side edge 22a of the base plate 22 facing the terminal crimping device M. Therefore, the electric wires are aligned along the side edge of the wiring board 20 with a predetermined gap, and by moving the wiring board 20 by the transport mechanism 30, the pass line P (see FIGS. 3 and 4). Transported on.

FIG. 2 is a side view showing a schematic configuration of the terminal crimping device M. Referring to the figure, the terminal crimping device M is configured such that the upper die 40 and the lower die 50 are vertically displaced in synchronism with each other along the apparatus main body 60, so that the terminals are provided between the upper die 40 and the lower die 50. And the end of the wire between them, deform the terminal and crimp it to the end of the wire. The lower die 50 is disposed below the pass line P, and includes an anvil 51 on which terminals are placed, and a lower holding member 52 that holds the anvil 51.

The upper die 40 is arranged above the pass line P and includes an insulation crimper 41 for crimping the terminals, and an upper holding member 42 for holding the insulation crimper 41. The device body 60 is formed in a substantially L shape, and the bottom portion 61 of the device body 60 is fixed on the workbench 10. A lower holding member 52 is vertically slidably attached to the surface of the rising portion 62 of the apparatus body 60. A motor unit 70 is provided on the back surface side of the bottom portion 61 of the apparatus body 60. The motor unit 70 includes a motor 71, a gear box 72 and a drive pulley 73. The gear box 72 has a clutch inside so that the output of the driving force of the motor 71 can be controlled. A rotation base 80 is mounted on the bottom portion 61 of the apparatus body 60, and a first driven pulley (not shown) is supported on the rotation base 80 via a rotation shaft 81. A second driven pulley 82 is fitted on the rotary shaft 81 on the side opposite to the first driven pulley. A pulley belt PB is wound around the drive pulley 73 and the first driven pulley. Therefore, the rotating force from the motor 71 as a drive source via the gear box 72 is transmitted to the rotary shaft 81 via the drive pulley 73, the pulley belt PB, and the first driven pulley.

Further, as shown in an enlarged manner in FIG. 3, an eccentric cam 83 is externally fitted on the rotary shaft 81. The eccentric cam 83 supports the lower holding member 52 via a roller follower 84 attached to the holding body 52a that contacts the lower end portion of the lower holding member 52. Therefore, the lower holding member 52 moves up and down as the rotary shaft 81 rotates. The eccentric cam 83 is configured so that the anvil 51 reaches the pass line at the top dead center in the vertical movement of the lower holding member 52.

As shown in FIG. 2, an upper holding member 42 is vertically slidably attached to the surface of the rising portion 62 of the apparatus body 60. A slide member 90 having a predetermined shape is arranged above the upper holding member 42, and the slide member 90 is vertically slidably attached to the surface of the rising portion 62 of the apparatus body 60. The upper holding member 42 and the slide member 90 are connected to each other via a pair of link plates 91 and 92. The lower end of the lower link plate 91 is rotatably attached to the upper holding member 42 about the horizontal axis 93, and the upper end of the upper link plate 92 is attached to the slide member 90 with the horizontal axis 94. It is attached so that it can rotate freely. Furthermore, the upper end of the lower link plate 91 and the lower end of the upper link plate 92 are connected via a horizontal shaft 95. A motor unit 100 having an NC servomotor 101 is arranged above the slide member 90, and the motor unit 100 is fixed to a rising portion 62 of the apparatus body 60. The motor unit 100 is provided with an output shaft 102 to which the driving force of the servo motor 101 is given. A screw thread is threaded on the outer peripheral surface of the output shaft 102, and a lower portion thereof is screwed into an upper portion of the slide member 90. Therefore, the slide member 90 is vertically displaced by rotating the servo motor 101 forward and backward, and as a result, the position of the slide member 90 is adjusted.

A timing pulley 111 is supported on the side surface of the apparatus main body 60 between the upper holding member 42 and the lower holding member 52 via the rotary shaft 110. The timing pulley 111 and the second driven member are driven by the timing pulley 111. A timing belt TB is wound around the pulley 82. A crank arm 112 is connected between the timing pulley 111 and the horizontal shaft 95 that connects the link plates 91 and 92. An end of the crank arm 112 on the timing pulley 111 side is attached to the timing pulley 111 via an eccentric shaft 113. The axis of the eccentric shaft 113 is displaced from the axis of the rotating shaft 110 by a distance R. Therefore, when the timing pulley 111 rotates around the rotation shaft 110, the eccentric shaft 113 is displaced by a distance 2R at the maximum. As a result, the horizontal shaft 95 connected to the eccentric shaft 113 via the crank arm 112 is displaced in the substantially horizontal direction by the distance 2R. As a result, the link plates 91 and 92 are in the bent state shown in FIG. , The link plates 91 and 92 are displaced in a straight line, and the upper holding member 42 is vertically displaced. The bottom dead center of this vertical displacement is the position where the insulation crimper 41 held by the upper holding member 42 completes the crimping of the terminal, that is, the position where the insulation crimper 41 reaches on the pass line P.

The operation of the terminal crimping device will be described. Referring to FIG. 2, the clutch in the gear box 72 responds to a predetermined input signal derived each time an electric wire for crimping a terminal is supplied between the upper mold 40 and the lower mold 50. Operates to rotate the rotary shaft 81 once. That is, the gearbox 72 stops the output of the driving force when the rotary shaft 81 is rotated once.

As a result, the rotary shaft 81 rotates only once in response to one terminal crimping operation. Along with this, the eccentric cam 83 (see FIG. 3) rotates once, so that the lower holding member 52 is reciprocally displaced only once between the top dead center and the bottom dead center. Since the rotation of the rotary shaft 81 is transmitted to the rotary shaft 110 via the timing belt TB or the like, the crank arm 112 operates in synchronization with the lower holding member 52. As a result, the upper holding member 42 is displaced downwards in synchronization with the lower holding member 52 being displaced upward, and the lower holding member 52 is displaced upwards in synchronization with the displacement lowering of the lower holding member 52.

As described above, the anvil 51 reaches the pass line P when the lower holding member 52 is displaced to the top dead center, and the insulation crimper 41 passes when the upper holding member 42 is displaced to the bottom dead center. Reach line P Therefore, the insulation crimper 41 and the anvil 51 meet on the pass line P. Therefore, while the electric wire is held in the initial position, the terminal arranged on the anvil 51 is deformed, and the crimping between the terminal and the end portion of the electric wire is achieved.

FIG. 4 is an enlarged front view of an essential part of the terminal crimping device, and FIG. 5 is an enlarged perspective view of an essential part of the terminal crimping device. Referring to FIG. 4, the front surface of the upper holding member 42 is open, and a shank 43 to which the insulation crimper 41 is detachably attached is held in the open portion. That is, the insulation crimper 41 is pressed against the front surface of the shank 43 by the pressing plate 44 and attached to the shank 43 by the fixing bolt 45. The fixing bolt 45 sends out the insulation crimper 41 in the front-back direction (paper surface direction) by adjusting the screwing amount, and adjusts the relative position with the ambile 51. Further, on the front upper surface of the shank 43, the distance between the anvil 51 and the lower end of the shank 43, the crimp height adjusting dial 46 for adjusting the so-called crimp height, and the distance between the tip of the insulation crimper 41 and the lower end of the shank 43. An insulation height adjusting dial 47 for adjusting the so-called insulation height is provided.

An anvil 51 is detachably attached to the upper surface of the lower holding member 52, as shown in FIG. Further, on the supply side (left side in the drawing) of the lower holding member 52, a terminal guide 53 for guiding the terminals T connected in a strip shape along the path line P via the carrier C onto the anvil 51 is attached. . The terminal guide 53 has a long shape extending from the end portion on the supply side of the lower holding member 52, and a terminal for holding the terminal T guided along the terminal guide 53 is provided on the terminal guide 53. A retainer 54 is attached. The terminal retainer 54 has a substantially L-shaped longitudinal shape in a side view, and a supply passage for supplying the terminal to the anvil 51 is formed by the terminal retainer 54 and the terminal guide 53. Therefore, the strip-shaped terminals T sequentially supplied from the terminal supply device (not shown) are supplied onto the anvil 51 via the supply path. In addition, on the upper surface of the terminal retainer 54, when the insulation crimper 41 and the anvil 51 are displaced to crimp the terminal, a plurality of recesses 54a for receiving the ends of the electric wire before crimping on the pass line P are formed. Is provided. The recesses 54a are arranged in correspondence with the alignment intervals of the electric wires.

Further, as shown in FIG. 4, on the supply side (left side in the figure) of the upper holding member 42, there is provided a terminal transfer mechanism 120 for transferring the terminals joined in a strip shape one by one onto the anvil 51. It is provided. The terminal transport mechanism 120 includes a feed pawl 121 for feeding the terminal to the anvil 51 at a predetermined pitch, and an adjusting member 122 that adjusts the feed pawl 121 to the terminal. The adjusting member 122 has a shape in which its lower portion is bent so as to avoid the terminal guide 53 and the terminal retainer 54 (see FIG. 5), and is swingable in the terminal feeding direction above the upper holding member 42. Supported by. That is, a long hole 122a having a shape bent toward the upper holding member 42 is formed in the upper part of the adjusting member 122, and the long hole 122a is attached to the upper part of the upper holding member 42. By inserting the support bolt 124 with the link plate 123 interposed, it is possible to swing around the support bolt 124. The feed claw 121 is arranged below the terminal guide 53, and is swingably supported around the pin 125 with respect to the lower portion of the adjusting member 122. Further, the feed claw 121 is biased in a direction of pressing the terminal by a winding spring 126 so that the terminal can be pressed and delivered. The spiral spring 126 has one end locked to the feed claw 121 and the other end locked to a stop pin 127 protruding from a lower portion of the adjusting member 122.

Further, the terminal crimping device is provided with an electric wire for guiding an electric wire W that is conveyed at a predetermined interval and is conveyed on a pass line P passing between the upper mold 40 and the lower mold 50. A guide 130 is provided. The electric wire guide 130 includes a press-fitting centering guide plate 131 that guides an end portion of an electric wire, which is located in the middle position of the insulation crimper 41 and the anvil 51, to which the terminal is crimped, to a predetermined crimping position, and an electric wire that is to be crimped. A pre-crimping centering guide plate 132 for guiding the end of the electric wire located on the supply side before crimping the terminal to each electric wire end receiver (recess) 54a of the terminal retainer 54 is provided.

The crimping centering guide plate 131 is attached to the front surface of the lower holding member 52, and an electric wire for crimping a terminal located at an intermediate position between the insulation crimper 41 and the anvil 51 across a substantially center line thereof. Is formed with a pair of peaks 131a, 131b for correcting the bending of the ends of the. In the valley formed between the pair of peaks 131a and 131b, a terminal located at an intermediate position between the insulation crimper 41 and the anvil 51 is used to guide the end of the wire to be crimped to a predetermined crimping position. The groove 131c is cut out downward.

As shown in FIGS. 4 and 5, the pre-crimping centering guide plate 132 corresponds to the alignment interval of the electric wires W before the terminal crimping, which is located on the supply side of the electric wire on which the terminal crimping is performed. A plurality of peaks 132a and valleys 132c are formed continuously to correct the bending of the ends. The positional relationship between the centering guide plates 131 and 132 along the path line P is as follows: the peak 132a of the pre-crimping centering guide plate 132 on the side of the crimping centering guide plate 131 and the pre-crimping centering guide plate 132 of the crimping centering guide plate 131. The mountain 131a at the side end has a relationship in which peaks and valleys are continuously formed.

FIG. 7 is a plan view showing a simplified wire guide state of the wire guide 130. Referring to the figure, the crimping centering guide plate 131 has a shape that is bent while avoiding the terminal carrier cutting blade 55 in front of the anvil 51. The pre-crimp centering guide plate 132 is disposed closer to the tip of the electric wire W than the crimp centering guide plate 131 so as to come into contact with the insulation barrel IB of the terminal T.

With reference to FIGS. 5 and 7, the wire clamp 24 is intermittently transported along the pass line so that the end of the wire W to be crimped to the terminal is the upper mold 40 and the lower mold 50. It is sequentially supplied to the intermediate position. In synchronism with this, the terminals T connected in a strip shape by the carrier C are sequentially supplied to the lower mold 50 along the pass line. After the electric wire W and the terminal T are supplied, the upper die 40 and the lower die 50 are synchronously displaced so that the upper die 40 and the lower die 50 reach the pass line almost at the same time. The terminal T and the electric wire W are sandwiched by the insulation crimper 41 and the anvil 51. Then, the terminal carrier cutter blade 55 cuts off the carrier C connecting the terminals T, and the insulation crimper 41 deforms the insulation barrel IB of the terminal T to the end of the wire W. The terminal T is crimped.

At this time, as shown in FIG. 7, the end of the wire at the intermediate position between the insulation crimper 41 and the anvil 51 where the terminal is crimped is guided between the ridges 131 a and 131 b of the crimp centering guide plate 131. By doing so, the bend is corrected. In this state, the end of the electric wire is introduced into the terminal T placed on the anvil 51 by the groove 131c formed between the ridges 131a and 131b.

On the other hand, the end of the electric wire before the terminal crimping, which is located on the supply side of the electric wire to which the terminal is crimped, has its bend corrected by a plurality of peaks 132a and valleys 132c provided on the pre-crimping centering guide plate 132. To be done. Moreover, since the pre-crimping centering guide plate 132 is arranged closer to the tip of the electric wire W than the crimping centering guide plate 131 so as to come into contact with the insulation barrel IB of the terminal T, it is The electric wire before terminal crimping is held almost straight between the electric wire clamp 24 and the plurality of peaks 132a and valleys 132c. As a result, it is possible to effectively prevent the end of the electric wire before crimping the terminal from bending and interfering with the end of the electric wire to be crimped.

Since the bending of the electric wire can be corrected in this manner, accurate terminal crimping can be performed. It should be noted that the present invention is not limited to the above embodiment, and many modifications and changes can be made within the scope of the present invention. For example, the peaks 132a and the valleys 132c of the centering guide plate 132 before crimping are provided at least at a distance that can prevent the end of the electric wire before the terminal crimping from interfering with the end of the electric wire where the terminal crimping is performed. Good.

The wire guide 130 is a terminal crimping device that displaces the upper die 40 toward the lower die 50 to crimp the terminals, or displaces the lower die 50 toward the upper die 40 to crimp the terminals. Even if it is applied to a terminal crimping device, the same effect is obtained.

[0035]

[Effect of device]

 As is clear from the above description, in claim 1 of the present invention, the bending is corrected by the plurality of peaks and valleys provided in the pre-crimping centering guide means, and as a result, the end portion of the wire before crimping the terminal is bent. It is possible to prevent interference with the end of the wire to be crimped.

According to the second aspect, the electric wire before crimping the terminal is held substantially straight between the peaks and valleys of the pre-crimping centering guide means. As described above, according to the electric wire guides of the first and second aspects, the bending of the electric wire can be corrected, and accurate terminal crimping can be performed. Therefore, there is an excellent effect that the productivity of the wire harness is improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing an overall configuration of a terminal crimping system according to an embodiment of the present invention.

FIG. 2 is a plan view showing a configuration of a wiring plate.

FIG. 3 is an enlarged sectional view showing a configuration related to an eccentric cam.

FIG. 4 is an enlarged front view of a main part of the terminal crimping device.

FIG. 5 is an enlarged perspective view of a main part of the terminal crimping device.

FIG. 6 is a plan view showing a configuration of a wiring plate.

FIG. 7 is a plan view showing a simplified electric wire guide state of the electric wire guide.

[Explanation of symbols]

 40 Upper mold 41 Insulation crimper 42 Upper holding member 50 Lower mold 51 Anvil 52 Lower holding member 130 Electric wire guide 131 Crimping centering guide plate 131a, 131b Mountain 131c Groove 132 Centering guide plate before crimping 132a Mountain 132b Valley W Electric wire T terminal IB insulation Ration barrel P pass line

Claims (2)

[Scope of utility model registration request] 1. An upper mold comprising an electric wire which is aligned at a predetermined interval and which is conveyed on a path line passing between an upper mold and a lower mold, and a terminal to be crimped to an end of the electric wire. The wire is guided to a terminal crimping device that deforms the terminal by sandwiching it between the lower mold and the lower mold and crimps it to the end of the wire. A pre-crimping centering guide means in which a plurality of peaks and troughs are continuously formed to correct the bending of the end of the electric wire in correspondence with the alignment distance of the electric wire before crimping the terminal located on the supply side. An electric wire guide for a terminal crimping device, which is characterized by including. 2. The electric wire guide for a terminal crimping device according to claim 1, wherein the pre-crimping centering guide means is arranged close to the tip of the electric wire so as to come into contact with the insulation portion of the terminal. Wire guide for the terminal crimping device.