JP2001307853A - Insertion press-fit device of ground terminal for shield wire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the productivity by performing an opening of braid in terminal work of a shield wire, inversion and insertion of ground terminal at one action. SOLUTION: The shield wire A in which a prelminary processing has been finished is induced into a braid opening pipe 9 by a tapered hole 5c of a wire set guide, and the wire A is retained by a clamp 1 after positioning by a positioning rod 7a. Then the pipe 9 is made to crawl into the inside of the braid b, and the braid is made to open, and afterwards, while letting the braid b invert with a ground terminal B which is pushed by a terminal insertion fixture 8, the terminal B is made to be inserted on the wire A.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a process for opening and reversing a braided shield (hereinafter referred to as a "braid") peeled off at the end of a shielded wire and for efficiently inserting and crimping a ground terminal when processing the shielded wire. Related to the device.

[0002]

2. Description of the Related Art The end of a shielded electric wire is stripped of a predetermined length of the outer skin of the end portion, then strips off the excess length of the exposed braid, and then passes the remaining braid through a pipe inside it. In this method, the braid opened by a braid reversing member surrounding the electric wire is squeezed and turned over on the outer skin.

[0003] Depending on the type of electric wire, it may be required to attach a ground terminal in the terminal processing. As the ground terminal, in the case of an in-vehicle electric wire or the like, a cylindrical one having a large diameter insertion port into the electric wire is used. In this ground terminal, a C-ring is previously mounted on the outer sheath of the electric wire, the braid is inverted on the C-ring, a small-diameter portion of the ground terminal is fitted thereon, and the small-diameter portion is crimped (fixed).

[0004] A ground terminal is fitted to the end of the outer sheath of the electric wire, the braid is inverted around the small diameter portion of the terminal, and a closed ring is inserted thereon to sandwich the braid between the terminal and the closed ring. However, in comparison with this, the former processing structure makes it easier to secure fixed reliability.

By the way, the above-mentioned C-ring can be automatically supplied and inserted by using the apparatus proposed in Japanese Patent Application No. 11-157675.

[0006] In addition, stripping the outer sheath of the electric wire and the extra length of the braid, opening the remaining braid, and reversing the work,
Various devices that automate this have been developed.

However, the insertion of the ground terminal relies on manual labor. In the manual operation, the holding of the electric wire by the clamp is released, and the ground terminal is manually inserted into the terminal portion after the processing up to the inversion of the braid. In addition, since it takes time and effort to re-hold the electric wire with the clamp thereafter, the worker carries out the crimping by hand while holding the electric wire, but this cannot improve the productivity. In addition, the insertion amount may vary, or the ground terminal after insertion may move halfway and the mounting position of the terminal may shift.

Accordingly, an object of the present invention is to improve the productivity and improve the position accuracy of the ground terminal by inserting the terminal simultaneously with the opening of the braid and subsequently performing the process up to crimping.

[0009] In addition, when a single-product type dedicated machine conventionally used is required to produce a large variety of products in small quantities, it is necessary to prepare a large number of products corresponding to the product type, which is not preferable in terms of equipment investment.

Therefore, it is a second object of the present invention to make it possible to cope with a variety of products by a simple setup change.

[0011]

In order to solve the above-mentioned problems, according to the present invention, there is provided a cylindrical terminal pushing tool which is attached to a holder with its tip directed toward the electric wire, and a terminal pushing tool which is urged by a spring. A braided open pipe provided so as to be able to protrude and retract, and a wire guided to the inside of the braided open pipe by guiding a processing-side end portion of the shielded wire, which has been stripped of the outer skin and stripped of the extra length of the exposed braid, through a tapered hole A set guide, a wire end positioning member arranged inside the braided open pipe, a clamp for holding the positioned shielded wire at the processing center, and a transition device for moving this clamp in parallel from the terminal insertion station to the crimping station, The holder,
A terminal pusher, a braided open pipe held by the holder, and a slide mechanism for moving the wire set guide forward and backward in the longitudinal direction of the wire are provided. After the braided open pipe is threaded inside the braid, the pipe is opened by threading. Push the ground terminal to the position where it hits the clamp while squeezing the braid with the cylindrical ground terminal set in advance on the outer periphery of the open end of the pipe, and finally the shielded wire moves parallel to the crimping station together with the clamp and the crimping of the ground terminal Was done.

The pushing of the ground terminal is carried out by a terminal pushing tool which comes out instead of the braided open pipe after reaching the insertion end point.

The above-mentioned ground terminal insertion and crimping apparatus can also solve the second problem when the terminal pusher and the braided open pipe are prevented from coming off by the index plunger and detachably attached to the holder.

The setting of the ground terminal for the braided open pipe may be performed by either manual work or automated work using a robot hand or the like.

[0015]

According to the apparatus of the present invention, after the braided opening pipe has finished opening the braid, it is immersed in the terminal pushing tool, and the terminal pushing tool that comes out in front of the braided pipe is connected to the ground terminal which is set on the braided opening pipe. Press into. Then, at this time, the braid having the ground terminal already opened is squeezed and inverted on the outer sheath of the electric wire. Therefore, the opening of the braid, the inversion, and the insertion of the ground terminal are performed in a single action, so that the tact time is not lost and the productivity is improved.

Further, the insertion amount of the ground terminal is fixed by the movement restriction by the clamp, and the clamp moves in parallel after the insertion to transfer the held wire to the crimping station, so that the inserted ground terminal moves on the wire. Therefore, the mounting position of the ground terminal is stable, and the quality does not deteriorate due to the variation in the mounting position.

When the terminal pusher and the braided open pipe are detachably secured to the holder by an index plunger, the pusher and the braided open pipe can be exchanged for a wire that matches the diameter of the wire, and a simple setup change is possible. It is possible to handle many kinds of products.

[0018]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a crimping device for an earth terminal according to the present invention.

1 is a clamp for holding the shielded electric wire A at the processing center, 2 is a transfer device for moving the clamp 1 in parallel from the terminal insertion station I of FIG. 3 to the crimping station II, and 3 is a base. The slide mechanism is provided on the plate 4. The slide mechanism 3 has a slider 3a that moves back and forth in the longitudinal direction of the electric wire A. The drive means 3b of the slide mechanism is preferably capable of electrically controlling the feed amount. As an apparatus capable of responding to the demand, an apparatus exemplified by driving a ball screw by a servomotor to drive the slider 3a
Is used to send to

On the slider 3a, an electric wire set guide 5, a holder 6, an electric wire end positioning mechanism 7, a terminal pusher 8 to be attached to the holder 6, and a braided opening pipe 9 are provided.

The clamp 1 is shown for holding and releasing the electric wire A by opening and closing a pair of right and left clamp claws 1b with an air chuck 1a.

The transfer device 2 moves the slider 2b guided by the linear guide 2a by pushing and pulling it with the air cylinder 2c. The clamp 1 is attached to the slider 2b of this device. Between the clamp 1 and the slider 2, as a preferable element, there is provided a buffering mechanism 11 composed of a guide rod 11a, a vertically arranged linear guide 11b, a return spring 11c, and a stopper pin 11d of FIG. , Clamp 1 when crimping the ground terminal
Is reduced, and the clamp 1 is protected.

As shown in FIG. 4, the electric wire set guide 5 is formed by dividing the two divided members 5a into actuators 5b.
(See FIG. 1 and FIG. 2). When the member 5a is opened and closed by driving, and the member 5a is closed, a tapered hole 5c for guiding the wire end to the processing center is formed at the abutting portion between the members. .

The wire end positioning mechanism 7 drives the positioning rod 7a by an air cylinder 7b to selectively move the positioning rod 7a to a positioning point and a retreat point.

The terminal pusher 8 has a cylindrical shape, and a braided open pipe 9 is installed inside the pusher 8 by a spring 10 so as to be urged forward and out. The aforementioned positioning rod 7a is inserted into the braided open pipe 9, and the end of the electric wire is positioned in the pipe.

The terminal pusher 8 is secured by detachably engaging a pin 12a at the tip of an index plunger 12 provided on the holder 6, so that the pin plunger 12 can be freely inserted and removed.

Reference numeral 13 in FIG. 3 denotes a crimping machine (press machine) provided at the crimping station II.

In the earth terminal inserting and crimping apparatus constructed as described above, an earth terminal B having the shape shown in FIG. , Do that set manually). Thereafter, as shown in FIG. 6, a shielded wire in which the preprocessed wire has been stripped, that is, as shown in FIG. A is held at the processing center by the clamp 1. At this time, the processed end of the electric wire A is guided by the tapered hole 5c of the set guide 5, introduced into the braided open pipe 9 whose tip is located near the exit of the hole, and extruded to the positioning point in the pipe 9. The end face is positioned by abutting the guide rod 7a (see FIG. 5A).

Thereafter, the electric wire set guide 5 is opened and retracted from the processing portion, the guide rod 7a is further retracted, and the slider 3a is advanced leftward in FIGS. 1 and 2 to expose the braided open pipe 9. Into the braid b. Thereby, the braid b opens as shown in FIG. When the braided open pipe 9 reaches the insertion end point (near the outer skin end) and is stopped, the spring 10 shown in FIGS. 5, the terminal pusher 8 pushes and moves the ground terminal B, and the ground terminal B is inserted into the electric wire A while turning the braid b, which has been opened, over the outer skin a of the electric wire A as shown in FIG. You.

The insertion of the ground terminal B ends at the position shown in FIG. Then, the slider 3a is moved backward to eliminate the obstacle of lateral movement, and the wire A is moved together with the clamp 1 to the crimping station II in FIG. 3 to crimp the inserted terminal. Thus, the operation by the illustrated device is completed.

When the tab at the upper end of the index plunger 12 is lifted, the pin 12a of the terminal pusher 8 can be removed and the terminal pusher 8 can be removed from the holder 6. At this time, the braided open pipe 9 passed through the inner side also comes off. For this reason, it is possible to perform multi-product processing by replacing the terminal pushing tool 8 and the braided open pipe 9 with ones having a size matching the wire diameter.

[0032]

As described above, the device of the present invention is
Opening, inversion, and insertion of the ground terminal in the end processing of the shielded electric wire can be performed in one action, and the productivity can be improved by rationalizing the work.

Further, the insertion amount of the ground terminal is regulated by the clamp, and there is no fear that the ground terminal after the insertion is moved.
Therefore, the mounting position of the ground terminal is constant, and the quality of the product is improved.

Further, when the terminal pushing tool is prevented from coming off by the index plunger and is detachably attached to the holder, it is possible to cope with various kinds by a simple setup change, and waste of equipment investment can be reduced.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing an embodiment of an apparatus of the present invention.

FIG. 2 is an enlarged view showing a main part of the above device.

FIG. 3 is a front view of the apparatus of FIG. 1;

FIG. 4 is a plan view of a terminal insertion station.

5A is a diagram showing a state where an electric wire is positioned and held; FIG. 5B is a diagram showing a braid opening process; FIG. 5C is a diagram showing a braid reversing process; Diagram showing

FIG. 6 is a perspective view of a shielded electric wire after pre-processing.

FIG. 7 is a perspective view of a ground terminal.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Clamp 2 Transition device 3 Slide mechanism 5 Electric wire set guide 5c Tapered hole 6 Holder 7 Wire end positioning mechanism 8 Terminal pushing tool 9 Braided open pipe 10 Spring 11 Buffering mechanism 12 Index plunger 13 Crimping machine A Shield wire a Skin b Braid B Ground terminal I Terminal insertion station II Crimping station

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Nobuyuki Itaya 1-7-10 Kikuzumi, Minami-ku, Nagoya F Harness Research Institute F-term (reference) 5E063 CB03 CB19 CC04 XA06 XA12 5E085 BB02 BB12 CC03 DD13 EE11 HH08 HH34 JJ31 JJ38 5G355 AA05 BA04 BA14 CA06

Claims (2)

[Claims] 1. A tubular terminal pusher having a tip attached to a holder with its tip directed toward an electric wire, a braided open pipe provided by a spring so as to be able to protrude and retract within the terminal pusher, and a braid exposed and stripped of outer skin. A wire set guide that guides the processed side end portion of the shielded wire having been stripped of the excess length portion by a tapered hole and guides the inside of the braided open pipe, and a wire end positioning member disposed inside the braided open pipe And a clamp for holding the positioned shielded electric wire at the processing center, a transfer device for moving the clamp in parallel from the terminal insertion station to the crimping station, the holder, the terminal pushing tool held by the holder, the braided open pipe and the electric wire. The electric wire set guide is provided with a slide mechanism for moving the set guide forward and backward in the longitudinal direction of the electric wire, and is divided into two parts after positioning and holding of the shielded electric wire. The opening of the braid opens, and then the braided open pipe penetrates into the inside of the braid to open the remaining braid, and the terminal pusher that comes forward instead of the braided open pipe that has reached the insertion end point is the tip of the braided open pipe. Pushing and moving the cylindrical ground terminal preset on the outer circumference, the ground terminal is inserted into the electric wire until it hits the clamp while squeezing the open braid and turning it over the outer skin of the electric wire, and finally the shielded electric wire together with the clamp. An earth terminal insertion crimping device for shielded wires, which moves in parallel to the crimping station and crimps the ground terminal. 2. The crimping device for inserting a ground terminal for a shielded wire according to claim 1, wherein the terminal pushing tool and the braided open pipe are prevented from coming off by an index plunger and detachably attached to a holder.