JPH065175U - Joint crimping machine - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention aims to reliably align the joints of the main line and the branch line to be connected, and to automatically prevent the core wire from protruding. [Structure] The resin stripping ends of the main line and the branch line are brought into contact with a stopper 33 on the right side of the anvil 1 so that the positions of the stripping ends are aligned, and a downward movement of a presser spring 29 causes a joint portion of the main line and the branch line. The protruding core wire is pushed into the inside of the crimp terminal along the T-shape and the guide surfaces 36 'and 40' of the front guide bodies 36 and 40. [Effect] Therefore, when crimping the crimp terminal, it is possible to prevent the occurrence of resin entrapment, core wire protrusion, and the like as in the related art.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a joint crimping machine that crimps crimp terminals to the joints of a main wire and a branch wire to connect both wires.

[0002]

[Prior art]

 A conventional joint crimping machine is constructed, for example, as shown in FIG.

That is, an anvil 1, which is a lower mold of a press die, is fixedly provided on a not-shown crimping machine main body, and a ram 2 provided above the anvil 1 so as to be vertically movable on the crimping machine main body. A crimper 4 having a groove 3 of a predetermined shape for crimping a crimping terminal is formed on the lower end of the ram 2 and attached to the ram 2. The crimp terminal is crimped between the groove 3 of the crimper 4 and the crimp terminal 4.

At this time, the engaging body 6 integrally provided on the lower end of the support shaft 5 is slidably engaged in the sliding groove 7 on the upper surface of the ram 2, and the rotational movement of the upper end of the support shaft 5 (see FIG. 6 is converted into a linear movement between the top dead center and the bottom dead center of the press (solid arrow in FIG. 6) and transmitted to the ram 2.

By the way, as shown in FIG. 7A, a plurality of crimp terminals 8 having a U-shaped cross section are integrally formed on a belt-shaped body called a carrier 9 at regular intervals. When the crimping terminal 8 is carried together with the carrier 9 by the crimping operation, and the crimping terminal 8 is carried and placed on the anvil 1, the cutter provided near the anvil 1 shown in FIG. The crimping terminal 8 is cut at the position indicated by the alternate long and short dash line in FIG. 7A, and the remaining carrier waste 10 shown in FIG. 7B is collected by the collecting means and discarded.

Further, the objects to be connected are usually one main line 11 and one or two or more branch lines 12 as shown in FIG. 8, and the resin in the middle of the main line 11 is partially peeled off. The exposed joint portion 13 of the core wire is formed, and the resin at the ends of both branch wires 12 is peeled off to form the exposed joint portion 14 of the core wire, and the positions of these joint portions 13, 14 are aligned. After that, the crimp terminal 8 is crimped to connect the main wire 11 and both branch wires 12.

At this time, the alignment of the joint portions 13 and 14 of the main line 11 and both branch lines 12 is performed by the feeling and skill of the operator without using a special jig, and the main line 11 and both branch lines are adjusted by the operator. After the wire 12 is gripped and the joint portions 13 and 14 are arranged in the crimp terminal 8 on the anvil 1, the crimp terminal 8 is crimped.

[0008]

[Problems to be solved by the device]

 However, conventionally, as described above, since the positions of the joint portions 13 and 14 are aligned depending on the feeling and skill of the operator, as shown in FIG. In some cases, the crimp terminal 8 is crimped while being displaced, and the resin is crimped while part of the resin is being bitten, so-called resin biting failure may occur.

Further, as shown in FIG. 9, for example, when the core wire of the joint portion 14 of the branch wire 12 is separated and the spread width L of the core wire is wider than the width L ′ of the upper end opening of the crimp terminal 8 before crimping. However, even if a part of the core wire is protruding from the crimp terminal 8, the crimp terminal 8 flows and is crimped during work, so that a so-called protruding defect may occur. To prevent such protruding of the core wire, For the sake of safety, the operation of the crimping machine must be temporarily stopped, and then the protruding core wire must be pushed into the crimping terminal 8 by the hand of the operator, resulting in the inconvenience of extremely poor workability.

Therefore, the present invention has been made in order to solve the above-mentioned problems, and it is possible to reliably align the joints of the main line and the branch line to be connected, and to automatically protrude the core wire. The purpose is to be able to prevent.

[0011]

[Means for Solving the Problems]

 A joint crimping machine according to the present invention comprises an anvil provided on a crimping machine main body, on which crimping terminals transported by a conveying means are mounted, a ram vertically movable on the crimping machine main body, and a ram on the ram. A crimper having a groove formed in a predetermined shape for crimping the crimp terminal attached to the lower end, and a core wire and a branch wire whose core wire is exposed due to skin peeling in the crimp terminal on the anvil. A joint crimping machine for crimping the crimp terminal to and from the anvil by downward movement of the crimper due to downward movement of the ram, a crimp terminal provided on one side of the anvil to a crimp terminal on the anvil. A stopper for aligning the peeling ends of the main line and the branch lines, which contacts the peeling ends of the resin, and the pressure on the anvil. A guide body provided opposite to the crimp terminal on the other side of the terminal and having a guide surface for guiding the protruding core wire of the joint portion of the main wire and the branch wire to the inside of the crimp terminal, and the crimper interlockingly. And a push-in means for pushing the protruding core wire of the joint portion into the inside of the crimp terminal at the time of vertical movement and downward movement.

[0012]

[Action]

 In the present invention, the resin stripping ends of the main line and the branch line are brought into contact with the stopper on one side of the anvil to align the positions of the stripping ends, and the lowering of the pushing means moves the joints of the main line and the branch line. Since the protruding core wire of the part is pushed into the inside of the crimp terminal along the guide surface of the guide body, when the crimp terminal is crimped, the conventional resin entrapment and the core wire protrusion are prevented.

[0013]

【Example】

 1 is an exploded perspective view of an embodiment of the joint crimping machine of the present invention, FIG. 2 is a left side view, FIG. 3 is a partial perspective view, FIG. 4 is a perspective view for explaining the operation, and FIG. 5 is for explaining the operation. FIG. Since the crimp terminal 8, the carrier 9, the main wire 11, and the branch wire 12 applied to the present invention are the same as those in the conventional art, FIGS.

As shown in FIG. 1, a base 22 is fixed on a base plate 21 that constitutes the main body of the crimping machine, the anvil 1 is attached to the left front end of the base 22, and the carrier 9 is attached to the left side of the anvil 1. A cutting insert 24 that holds a cutter 23 for cutting between the crimp terminal 8 and the crimp terminal 8 is vertically movable, and a feed base plate 25 for transporting the crimp terminal 9 by a transport means (not shown) is mounted on the base 22. The guide plates 26 and 27 are fixed on the base plate 25.

Further, a right lower end portion of a ram guide 28 having a U-shaped horizontal cross section and having open upper, lower and front surfaces is fixed to a right front end portion of the base 22, and the ram guide 28 is automatically moved vertically. The ram 2 is arranged, and the upper end of the presser spring 29, which is a pressing means, is fixed to the crimper 4 attached to the ram 2 by a screw or the like. A protruding core wire that is wider than the opening width of the crimp terminal 8 is pushed into the crimp terminal 8.

Here, in FIG. 1, 30 is a spacer interposed between the crimper 4 and the spring 29, 31 is a clamper retainer attached to the crimper 4 covering the upper half of the spring 29, Reference numeral 32 is a pre-feed cam attached to the ram 2.

A stopper 33 having an L-shaped cross section is attached to the upper surface of the right front end of the base 22, and an abutting portion 33 ′ of the stopper 33 extending upward is located at the right rear end of the anvil 1. When arranging the joint portions 13 and 14 of the main wire 11 and the branch wire 12 on the crimp terminal 8 on the anvil 1, as shown in FIG. 4, the resin stripped ends of the main wire 11 and the branch wire 12 contact the stopper 33. The joint portions 33 and 14 are brought into contact with each other to align the joint portions 13 and 14.

Further, the front end portion of the stopper holding body 35 is fixed to the lower surface of the right end of the ram retainer 34 that closes the front opening of the ram guide 28, and the T-shaped guide body 36 is attached to the stopper holding body 35, and the anvil is attached. The lower end of the guide surface 36 'on the front surface of the T-shaped guide body 36 is located above the left rear end of the crimp terminal 8 before crimping on 1, and the protruding core wire contacts the guide surface 36'.

Further, a section guide body 37 for guiding the carrier waste 10 to a discharge portion (not shown) is attached to the front upper end portion of the cutting insert 24, and is further rotatably and fixedly attached to the lower portion of the front end of the section guide body 37. One piece guide body 38 is attached, the front end of the L-shaped wire guide 39 is fixed to the left upper end of the piece guide body 37, and the vertical piece 39 'of the guide 39 is placed at the position where the main wire 11 abuts. The front guide body 40 is attached to the center of the rear end of the upper surface of the section guide body 37. The rear end of the front guide body 40, which is a downward inclined guide surface 40 ′, has a rear end before being crimped on the anvil 1. The protruding core wire is located above the left front end of the crimp terminal 8 and contacts the guide surface 40 '.

By the way, as shown in FIG. 3, the positional relationship among the stopper 33, the T-shaped guide body 36 and the wire guide guide 39 is as shown in FIG. 3, the front surface of the contact portion 33 ′ of the stopper 33 and the vertical piece of the wire guide guide 39. The front surface of 39 'is displaced rearward from the guide surface 36' of the T-shaped guide body 36 by a slight amount corresponding to the width of the shaded portion in FIG. 3, so that the main line 11 and the branch line are formed on the guide surface 36 '. The joint portions 13 and 14, which are exposed portions of the core wires of 12, come into contact with each other.

Next, the operation of crimping the crimp terminal 8 will be described. For example, when connecting one main wire 11 and two branch wires 12, as shown in FIG. 4, the main wire 11 and both branch wires 12 are connected. The stripped ends of the joint portions 13 and 14 are brought into contact with the contact portion 33 ′ of the stopper 33 to align the positions of the joint portions 13 and 14, and then the joint portions 13 and 14 are arranged in the crimp terminal 8.

At this time, as shown in FIG. 5, even if the exposed core wire W is scattered and is wider than the width of the upper surface opening of the crimp terminal 8 before crimping, the pressing spring 29 is moved downward together with the downward movement of the crimper 4. By doing so, the protruding core wire W is pushed into the inside of the crimp terminal 8 along the guide surface 36 ′ of the T-shaped guide body 36 and the guide surface 40 ′ of the front guide body 40. To be prevented.

Simultaneously with the pressing by the spring 29, the crimping terminal 8 is crimped between the groove 3 of the crimper 4 and the anvil 1 by the downward movement of the crimper 4, and the crimping terminal 8 is connected to the main wire 11 and both branch wires 12. The main wire 11 and both plate wires 12 are connected by crimping to the joint parts 13 and 14.

Here, the conveyance of the carrier 9 by the conveying means, the cutting of the crimp terminal 8 and the downward movement of the ram 2 are interlocked. When the carrier 9 is conveyed by one crimp terminal, it is crimped by the cutter 23. The terminal 8 is cut and the crimp terminal 8 is crimped.

Therefore, a T-shaped guide body 36, a front guide body 40, and a presser spring, which are provided with a stopper 33 for aligning the stripped ends of the main wire 11 and the branch wire 12 to guide the protruding core wire to the inside of the crimp terminal 8, are provided. By providing 29, it is possible to reliably prevent the occurrence of resin entrapment and core wire protrusion that occur when crimping the crimp terminal 8, and to significantly reduce the rate of defective products. It will be possible.

The pressing means is not limited to the pressing spring 29 described above.

Of course, the shapes of the stopper 33 and the guides 36, 40 are not limited to those in the above embodiment.

[0028]

[Effect of device]

 As described above, according to the joint crimping machine of the present invention, the stopper is provided on one side of the anvil, the guide body is provided on the other side, and the pushing body for pushing the protruding core wire along the guide surface of the guide body is provided. Since it is provided, when crimping the crimp terminal, it is possible to prevent the conventional resin biting and core wire protrusion from occurring, and it is possible to significantly reduce the incidence of defective products. It is possible to provide a joint crimping machine with high reliability.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an embodiment of a joint crimping machine of the present invention.

FIG. 2 is a left side view of the assembled state of FIG.

3 is a perspective view of a part of FIG. 2. FIG.

FIG. 4 is a partial perspective view for explaining the operation of FIG.

FIG. 5 is a left side view of another part of FIG.

FIG. 6 is a perspective view of a part of a conventional joint crimping machine.

FIG. 7 is a perspective view for explaining a carrier and a crimp terminal.

FIG. 8 is an operation explanatory view of a conventional joint crimping machine.

FIG. 9 is an operation explanatory view of a conventional joint crimping machine.

[Explanation of symbols]

 1 Anvil 2 Ram 4 Crimper 29 Presser spring 33 Stopper 36 T-shaped guide body 36 ', 40' Guide surface 40 Front guide body

Claims (1)

[Scope of utility model registration request] 1. An anvil, which is provided in the main body of the crimping machine, on which crimping terminals transported by a transporting device are placed, a ram vertically movable in the main body of the crimping machine, and a ram attached to the ram at the lower end. And a crimper having a groove of a predetermined shape for crimping the crimp terminal, wherein the crimp terminal on the anvil is provided with a joint portion of a main wire and a branch wire whose core wire is exposed by peeling the resin, In a joint crimping machine for crimping the crimping terminal with the anvil by downward movement of the crimper by downward movement of a ram, the arrangement of the joint part to the crimping terminal on the anvil provided on one side of the anvil. When the stripping ends of the resin of the main line and the branch line come into contact with each other, a stopper for aligning the stripping ends, and the crimping terminal on the other side of the crimping terminal on the anvil. A guide body provided opposite to each other and having a guide surface for guiding the protruding core wire of the joint portion of the main wire and the branch wire to the inside of the crimp terminal, and the joint portion when vertically moved in association with the crimper And a pushing-in means for pushing the protruding core wire into the inside of the crimp terminal.