JP2007234619A - Crimping device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a crimping device which can be applied for different diameters of insulation coating portions of wires. <P>SOLUTION: The crimping device is provided with an adjusting mechanism for adjusting the height of the insulation coating portion of a wire, and has its front surface arranged in a direction opposing to the direction in which a core portion of the wire is directed. The adjusting mechanism has a shaft member coupled to an eccentric shaft part having a regular polygon part fitted into a tool ram body portion and an axis shifted from the axis of the regular polygon part and biased to the side of the tool ram body portion by a spring; and an adjusting dial arranged on the eccentric shaft part in a posture direcred to the front surface, prevented from coming off by a pin attached to the shaft member while being biased toward the direction separating from the shaft member by the spring, and having a polyhedron in which the distance from the axis to the circumference sides is different depending on positions in the circumference direction, allowing the crimping device to crimp terminals of different diameters of insulation coating portions of wires. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a crimping apparatus provided with an adjustment mechanism for adjusting the respective crimping heights when crimping a terminal to a core wire part and an insulation coating part of an electric wire whose end is stripped.

  2. Description of the Related Art Conventionally, there has been known a crimping apparatus including an adjustment mechanism that adjusts the crimping height of each portion when crimping a terminal to a core wire portion and an insulation coating portion of an electric wire whose end is stripped (for example, , See Patent Document 1).

  However, in the crimping apparatus shown in Patent Document 1, in order to operate the crimping height adjusting mechanism for the core wire portion and the crimping height adjusting mechanism for the insulating coating portion, it is necessary to temporarily loosen a predetermined fastening portion. There is a problem that it takes time to adjust the height.

  Thus, as a device for solving this problem, a crimping device having two dials for operating two height adjusting mechanisms has been proposed (see, for example, Patent Document 2).

  FIG. 1 is a front view of the main part of the crimping apparatus shown in Patent Document 2. FIG.

  The crimping device 1 of Patent Document 2 includes a dial for operating the crimping height adjusting mechanism for the core wire portion and the crimping height adjusting mechanism for the insulating coating portion on the front surface of the device, and is necessary for crimping. It consists of a motive power unit that generates force and an applicator that receives the force generated by the motive power unit and crimps the terminal.

  FIG. 1 shows the applicator 20 and a press ram 11 that is a component of the motive power unit and transmits the force generated by the motive power unit to the applicator 20.

  The applicator 20 includes a machine frame 21, an anvil body 22, and a base 23. A pair of vertical rails 24 are fixed to the machine frame 21, and a swing rod 26 is pivotally supported on the machine frame 21 by a shaft 26a. ing. The tool ram 25 for crimping the terminal n1 to the strip portion 30a (see FIG. 2) of the electric wire 30 in cooperation with the anvil body 22 is guided by the vertical rail 24 and moves up and down.

  The tool ram 25 is connected to the press ram 11 described above, and a cam roller 25b is supported by a shaft 25c on a side portion 25a of the tool ram 25. The cam roller 25b is provided on the swing rod 26. The cam groove 26b is fitted. Thereby, when the tool ram 25 moves up and down, the swing rod 26 swings around the shaft 26a. A plate 28 is attached to the lower side of the swinging rod 26. A feed claw 27 whose tip is locked to a chain terminal n placed on the other side of the terminal guide rail 23a is attached to the plate 28 with a shaft 27b. It is pivotally supported by.

  The press ram 11 is provided with a reference dial 111 for adjusting the position of the bottom dead center of the lower end portion 11a.

  FIG. 2 is a side view of the main part of the crimping apparatus shown in FIG.

  The terminal n1 shown in FIG. 2 includes an insulation barrel n12 that grips the contact portion n11, the coating 31 of the electric wire 30, and a wire barrel n13 that grips the core wire 32, and a number of terminals n1 are connected to the carrier n14 to connect the chain terminal n. Constitute. The crimper portion 25d of the tool ram 25 also shown in FIG. 1 includes a cutoff punch 251d, an insulation crimper 252d that crimps the insulation barrel n12, and a wire crimper 253d that crimps the wire barrel n13.

  In this crimping device 1, the terminal n1 closest to the anvil body 22 among the chain terminals n connected in plurality by the carrier n14 is placed on the anvil body 22 by the operation of the feed claw 27, which will be described later, and the end portion When the electric wire 30 having the strip portion 30a previously formed thereon is placed on the terminal n1 mounted on the anvil body 22, the press ram 11 of the motive power portion is lowered, and the tool ram 25 connected to the press ram 11 is also vertical. When guided by the rail 24 and lowered, the tool ram 25 and the anvil body 22 cut the bridge portion n15, which is a portion connecting the terminal to the carrier n14, and the terminal n1 separated from the chain terminal n and The strip portion 30a is crimped. When the crimping is finished and the tool ram 25 starts to rise, the cam roller 25b also rises along the cam groove 26b of the swing rod 26, and the swing rod 26 swings around the shaft 26a counterclockwise. As a result, the terminal of the chain terminal n closest to the anvil body 22 is placed on the anvil body 22 along the terminal guide rail 23a again by the feed claw 27.

  As shown in FIG. 2, the anvil body 22 includes a floating shear 221 having a groove blade 221 a, an insulation anvil 222, and a wire anvil 223. When the tool ram 25 is guided by the vertical rail 24 and lowered, The bridge n15 of the terminal n1 placed on the wire 22 is cut by the cut-off punch 251d and the groove blade part 221a of the floating shear 221. The crimping of the covering 31 of the electric wire 30 and the installation barrel n12 is performed by This is performed by the installation anvil 222. Further, the crimping between the core wire 32 of the electric wire 30 and the wire barrel n13 is performed by the wire crimper 253d and the wire anvil 223.

Here, in the crimping apparatus 1 shown in FIGS. 1 and 2, the adjustment of the crimping height of the core wire portion and the crimping height of the covering portion is adjusted by the reference dial 111 provided in the press ram and then the lower dial. 40 and the upper dial 50 are used to change the bottom dead center position of the insulation crimper 252d and the wire crimper 253d. The dial 50 shown in the upper part of FIGS. 1 and 2 is for the wire crimper, and the dial 40 shown in the lower part is for the insulation crimper.
JP-A-7-6849 Japanese Utility Model Publication No. 7-27086

  By the way, there are various types of electric wires depending on the application. For example, in the crimping device of Patent Document 2, a plurality of types of electric wires having the same core wire diameter but significantly different covering diameters. In the case where the terminal is crimped, there is a case where it is not possible to cope only with the adjustment of the bottom dead center of the insulation crimper by rotating the dial 40 for the insulation crimper.

  An object of this invention is to provide the crimping | compression-bonding apparatus which can respond | correspond widely to the diameter of the insulation coating part of various electric wires in view of the said situation.

To achieve the above object, the crimping apparatus of the present invention comprises:
In the crimping apparatus having a crimp height adjustment mechanism for the insulation coating portion of the electric wire and having a front surface in a direction opposite to the direction in which the core wire portion of the electric wire faces,
The crimping height adjusting mechanism is configured such that a regular polygon portion fitted into the tool ram body portion and an eccentric shaft portion having a center axis shifted from the center axis of the regular polygon portion are connected, and the tool ram body portion is connected by a spring. A shaft member urged to the side and the eccentric shaft portion facing the front surface, and urged in a direction away from the shaft member by a spring, but disengagement is prevented by a pin attached to the shaft member And an adjustment dial having a polyhedron whose distance from the central axis to the outer peripheral surface varies depending on the position in the circumferential direction.

  In the crimping apparatus according to the present invention, the bottom dead center of the insulation crimper can be greatly changed as compared with the conventional one because the crimp height adjusting mechanism of the insulation coating portion of the electric wire has the eccentric shaft portion.

  According to the crimping device of the present invention, it is possible to widely cope with various diameters of the insulation coating portion of the electric wire.

  Hereinafter, embodiments of the present invention will be described.

  FIG. 3 is an external perspective view of one embodiment of the crimping apparatus of the present invention.

  FIG. 3 shows a crimping apparatus 100 that is an embodiment of the crimping apparatus of the present invention. The crimping apparatus 100 includes a casing unit 101 including a driving unit that drives a press ram 11, and the casing unit. An applicator portion 102 is attached to 101 and presses a terminal against a strip portion at the end of an electric wire by using a force from a press ram 11. FIG. 3 also shows an installation dial for adjusting the bottom dead center of the insulation crimper at the upper end of the applicator unit 102. Note that a reference dial for adjusting the bottom dead center position of the press ram 11 is in the casing 101 above the press ram 11.

  FIG. 4 is a schematic configuration diagram when the applicator portion of the crimping apparatus shown in FIG. 3 is viewed from the front of the apparatus.

  In the applicator unit 102 shown in FIG. 4, a terminal (not shown) is supplied from the left side of the drawing, and an electric wire (not shown) whose tip is stripped and the core wire is exposed is supplied from the front side of the drawing. Although details will be described later in this applicator section 102, the crimping height of the core wire portion is adjusted by the above-described reference dial, and the crimping height of the insulating coating portion is basically adjusted by the above-described reference dial. Further, adjustment is performed by an installation dial 140 shown in FIG. This installation dial 140 is composed of a main dial 142 that is located at the center and greatly adjusts the position of the bottom dead center, and a sub-dial 141 that is located at the periphery of the main dial 142 and finely adjusts the position of the bottom dead center. Has been. The installation dial 140 corresponds to an example of an adjustment mechanism according to the present invention, and the main dial 142 corresponds to an example of a shaft member according to the present invention. The sub dial 141 corresponds to an example of an adjustment dial according to the present invention.

  4 mainly includes a machine casing 121, a tool ram 125 that moves up and down relative to the machine casing 121, an anvil body 122, and a base 123. A vertical rail 124 is attached to the machine casing 121, and the tool ram 125 moves up and down along the vertical rail 124.

  A side plate 130 provided with a long hole 130 a is also attached to the machine frame 121. Further, a shaft 132 is provided between the machine casing 121 and a support member 133 attached to the casing unit 101 (FIG. 3) located on the left side of FIG.

  A cam follower (not shown) is erected on the shaft 132, and this cam follower is engaged with a cam groove provided on a predetermined surface of the tool ram 125. 132 can move back and forth in the left-right direction in FIG.

  The arm 127b of the feed claw 127 that feeds one terminal of the chain terminal n closest to the anvil body 122 to the anvil body 122 one by one is connected to the shaft 132 and has a shaft 1271b penetrating the long hole 130a. is doing. To the side plate 130, a composite nut 131 composed of a central portion 131a and an outer peripheral portion 131b is fixed to the central portion of the long hole 130a. The shaft 1271b of the arm 127b is press-fitted into the central portion 131a of the composite nut 131 at the tip. The central portion 131a of the composite nut 131 is rotatable with respect to the outer peripheral portion 131b. When the shaft 132 moves in the left-right direction in FIG. The claw 127c is rotated around 131a, and the claw 127c feeds the terminal toward the anvil body 122 through the connecting portion 127a connected to the arm 127b.

  FIG. 4 also shows a crimper portion that is crimped in cooperation with the anvil body 122, which includes a cut-off punch 1252, an insulation crimper 1253, and the like, immediately below the insulation dial 140 shown on the upper end side of the tool ram 125. 125d is also shown.

  In addition to the floating shear 1221 that cuts the end terminal from the chain terminal in cooperation with the cut-off punch 1252, the anvil body 122 is crimped in cooperation with the insulation crimper 1253 (not shown in FIG. 4). There are installation anvils. FIG. 4 also shows an abutting plate 126 above the anvil body 122, on which the tip of the core of the stripped electric wire comes into contact for positioning the electric wire.

  FIG. 5 is an exploded view of the tool ram.

  FIG. 5 shows components constituting the tool ram 125. On the lower left side of FIG. 5, a cut-off punch 1252 attached by a hexagonal screw 1251 below the main body 1250, a flat washer 1256, Insulation crimper 1253, spacer 1257, and wire crimper 1254 are shown. FIG. 5 also shows a crimper support 1255 attached to the middle stage of the main body 1250 with screws 1258. Furthermore, FIG. 5 shows a rotating shaft 1261 that is inserted into a hole 1250a provided on the upper side of the main body 1250 and that is inserted through a spring 1260 and that has a thread at the tip 1261a. This is fitted with the spring 1260 compressed from the back side of the main body 1250 of the tool ram 125, and the tip 1261a is screwed to the main dial 142 of the installation dial 140. . The main dial 142 is covered with a sub-dial 141 with the spring 150 inserted, and the sub-dial 141 is restrained from being reversed by a pin 143 attached to the tip of the main dial 142 with the spring 150 compressed. ing. That is, the main dial 142 is attracted to the main body 1250, and the sub dial 141 is prevented from being separated from the main dial 142 by the pin 143, and the pin 143 is connected to the sub dial 141. The number (1 to 8) drawn on the front surface is fitted into a recess 1411 provided between the numbers (see FIG. 8). As a result, the position of the sub dial 141 with respect to the main dial 142 is fixed.

  In the tool ram 125, the upper surface 1254 a of the wire crimper 1254 abuts under the jaw 1255 a of the crimper support 1255. The flat washer 1256 is thicker than the insulation crimper 1253, and the flat washer 1256 is dropped into a long hole 1253a provided near the center of the insulation crimper 1253. In this way, the insulation crimper 1253 is movable in the vertical direction with respect to the main body 1250.

  As described above, the installation dial 140 includes the main dial 142 and the sub-dial 141. The sub-dial 141 has a short, generally cylindrical shape and has an outer peripheral surface that is a polyhedron. Although the distance from the central axis of the sub dial 141 to the inner peripheral surface is the same, the distance to the outer peripheral surface varies depending on the position in the circumferential direction, that is, the thickness varies depending on the position.

  As shown in FIG. 6, the main dial 142 includes an eccentric part (eccentric shaft part) 1421, a fitting part (regular polygon part) 1422, and a flange part 1423 sandwiched between them.

  FIG. 6 shows the main dial.

  FIG. 6A shows a front view of the main dial 142, and a square fitting portion 1422 on the back side is indicated by a dotted line. FIG. 6B shows a right side view of the main dial 142, and a hole provided with a screw groove that is screwed with a screw thread provided at the distal end portion 1261 a of the rotating shaft 1261 shown in FIG. 5. 1421a is shown.

  FIG. 6C shows a rear view of the main dial 142, and the eccentric portion 1421 is shown by a dotted line. The center axis X of the eccentric part 1421 of the main dial 142 and the center axis X of the fitting part 1422 of the main dial 142 are misaligned, and the fitting part 1422 is located on the front side of the main body 1250 shown in FIG. The spring 1260 is fitted into a square recess 1250b formed so as to surround the hole 1250a by urging the spring 1260 toward the main body 1250. In this applicator portion 102, the main dial 142 to which the pin 143 is attached is pulled together against the bias of the spring 1260 by pulling the sub dial 141 away from the main body portion 1250. The portion 1422 is disengaged from the concave portion 1250b and is rotatable about the central axis X ｀. At this time, when the main dial 142 is rotated so that the letter “A” drawn on the main dial 142 is on the lower side in FIG. 6A, that is, the lower side in the main body 1250 shown in FIG. 142 is located at the lowest position with respect to the main body 1250. Further, by rotating the main dial by 90 ° counterclockwise from that state so that the letter 'B' comes down, the position relative to the main body 1250 is lower than when the letter 'A' comes down. In addition, the main dial 142 can be positioned at a raised position. The position of the main dial 142 with respect to the main body 1250 is further raised when the character 'C' is positioned on the lower side and the position of the character 'D' is positioned on the lower side. . FIG. 6C shows the eccentric portion 1421 from the central axis X ′ of the fitting portion 1422 when each of the letters “A”, “B”, “C”, and “D” is located on the lower side. The distance to the bottom end is indicated by 'A' ',' B '', 'C' ',' D '', where 'A' 'is the longest and' D '' is the shortest .

  FIG. 7 is an external perspective view of the tool ram, and FIG. 8 is a front view of the tool ram. Here, in order to prevent the illustration from being complicated, the hexagonal screw 1251, the cut-off punch 1252, the flat washer 1256, and the like shown in FIG. 5 are not shown.

  FIGS. 7 and 8 show a state in which the lowermost surface of the sub dial 141 placed on the main dial 142 faces the upper surface 1253b of the insulation crimper 1253. FIG.

  The sub-dial 141 has numbers “1” to “8” drawn on the front surface, and the outer surface of the sub-dial 141 is a polyhedron as described above. The distance to the circumferential surface is the same, but the distance to the outer circumferential surface differs depending on the position in the circumferential direction. In this applicator unit 102, since the thickness of the sub dial 141 varies depending on the position in the circumferential direction, the letter “A” is placed at the lowermost position on the main dial 142, and the numeral “ When 8 ′ is positioned at the lowermost position, the lower end surface of the sub dial 141 is positioned at the lowest position with respect to the main body 1250 of the tool ram 125, and the letter “D” is positioned at the lowermost position with respect to the main dial 142. In addition, when the numeral “1” is placed at the lowest position with respect to the sub dial 141, the lower end surface of the sub dial is positioned at the uppermost position with respect to the main body 1250 of the tool ram 125. That is, in this applicator 102, the position of the bottom dead center of the insulation crimper 1253 including the above-described highest rise position and lowest drop position can be changed in 32 ways.

  Here, it demonstrates using FIG. 9 with FIG.

  9 is a cross-sectional view taken along the line Q-Q 'of the tool ram shown in FIG.

  The rotation of the sub dial 141 is performed by the pin 143 attached to the main dial 142 while pressing the sub dial 141 against the main body 1250 side shown in FIG. 8 against the bias of the spring 150 shown in FIG. This is performed after the fitting into the recess 1411 provided on the sub dial 141 is released.

  Hereinafter, the crimping operation by the crimping apparatus 100 of this embodiment will be described.

  In the crimping apparatus 100, the tool ram 125 is also raised and lowered by raising and lowering the press ram 11 (see FIG. 3) loosely fitted in the space 1259 above the tool ram 125. When the insulation crimper 1253 and the like attached to the tool ram 125 in contact with the lower terminal come into contact with the lower terminal, the descent is first decelerated. However, the press ram 11 continues to descend further to a predetermined bottom dead center, and at that time, the tool ram 125 is pushed toward the anvil body 122 according to the scale selected on the reference dial. At this time, the terminal is crimped to the strip portion of the electric wire, and the adjustment of the crimping height of the covering portion of the electric wire and the adjustment of the crimping height of the core portion of the electric wire are performed by the insulation crimper 1253 responsible for the crimping and This is done by changing the bottom dead center position of the wire crimper 1254.

  First, the bottom dead center position of the wire crimper 1254 for crimping the wire barrel n13 (see FIG. 2) of the terminals is adjusted by the reference dial for adjusting the bottom dead center position of the press ram as described above.

  The bottom dead center position of the insulation crimper 1253 for crimping the insulation barrel n12 (see FIG. 2) of the terminal is adjusted based on the reference dial, and as described above, the main dial 142 constituting the insulation dial 140 Further, by adjusting the sub dial 141, it is possible to adjust in a wide range compared to the conventional case. Thereby, according to the crimping | compression-bonding apparatus 100 of this embodiment, it can respond also about the electric wire from which the diameter of an insulation coating part differs significantly.

  Further, in the crimping device 100 of the present embodiment described above, since the dial for adjusting the bottom dead center of the insulation crimper 1253 is arranged facing the operator's standing position, the crimping height of the insulating coating portion is increased. Can be easily adjusted. Further, when the bottom dead center of the insulation crimper 1253 is largely changed, the adjustment work can be facilitated by pulling out the sub dial 141 and pushing the sub dial 141 when fine adjustment is performed.

  In the embodiment described above, the case where the fitting portion 1422 is a square has been described as an example. However, in the present invention, this may be a regular polygon, and thus may be a regular triangle or a regular triangle. It may be a pentagon or a regular octagon.

It is a front view of the principal part of the crimping | compression-bonding apparatus shown by patent document 2. FIG. It is a side view of the principal part of the crimping | compression-bonding apparatus shown in FIG. It is an external appearance perspective view of one Embodiment of the crimping | compression-bonding apparatus of this invention. It is a schematic block diagram at the time of seeing the applicator part of the crimping | compression-bonding apparatus shown in FIG. 3 from the apparatus front surface. It is an exploded view of a tool ram. It is a figure which shows a main dial. It is an external appearance perspective view of a tool ram. It is a front view of a tool ram. It is Q-Q 'sectional drawing of the tool ram shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Press ram 100 Crimping device 101 Case part 102 Applicator part 121 Machine frame 122 Anvil body 123 Base 124 Vertical rail 125 Tool ram 1250 Body part 1251 Hexagon screw 1252 Cut-off punch 1253 Installation crimper 1254 Wire crimper 1255 Crimper support 1256 Flat Washer 1257 Spacer 1258 Screw 1260, 150 Spring 126 Contact plate 127 Feed claw 140 Insulation dial 141 Sub dial (adjustment dial)
1411 Recess 142 Main dial (shaft member)
1421 Eccentric part (Eccentric shaft part)
1422 fitting part (regular polygon part)
1423 buttock 143 pin

Claims (1)

In the crimping apparatus having a crimp height adjustment mechanism for the insulation coating portion of the electric wire and having a front surface in a direction opposite to the direction in which the core wire portion of the electric wire faces,
The crimping height adjusting mechanism is configured such that a regular polygon part fitted into a tool ram body part and an eccentric shaft part having a center axis shifted from the center axis of the regular polygon part are connected, and the tool ram body part is connected by a spring. A shaft member urged to the side and the eccentric shaft portion facing the front surface and urged in a direction away from the shaft member by a spring, but disengagement is prevented by a pin attached to the shaft member And an adjustment dial having a polyhedron whose distance from the central axis to the outer peripheral surface varies depending on the position in the circumferential direction.

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