JPH10321340A - Chain terminal automatic crimping machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce labor of an operator, and improve productivity by rotating it by arranging a crimping die in a gear shape on an outer periphery of a disk, moving them by meshing chain terminals with this, and automatically performing crimp-calking in order. SOLUTION: Linked terminals 32 connected by a tape or the like are used, and a rotary press-fitting die 5 takes a rotary indexing action by a brake motor 27, and automatically sends the terminals one by one, and discharges it. The rotary crimping die 5 is provided with a conical guide hole to rotate together in response to a die groove of an outer periphery, and is provided with a rotary insertion guide 6 to facilitate inserting work of an electric wire. When an operator inserts an electric wire, a switch operates, and a crimping press device having a crimping punch 4 crimps the terminals. Therefore, the operator can finish crimping work only by inserting the tip covering torn-off electric wire into a guide hole of the rotary insertion guide 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for crimping a crimp terminal used in electric wiring work.

[0002]

2. Description of the Related Art Conventionally, crimping of a crimping terminal is performed by inserting each terminal into a hand tool called a "crimping tool" shaped like pliers, and inserting an electric wire whose end portion has been stripped in advance. The method has been performed in which a crimping tool is gripped by hand and pressurized to crimp the terminal.

[0003]

In the above method,
Each small and difficult-to-handle terminal is held by hand, and the wires whose ends have been stripped in advance are also inserted and pressed one by one. Not only that, the efficiency was very poor, and the productivity was very low.

Also, due to the close contact at the time of crimping, the terminal holes are only slightly larger than the electric wires and are very small and difficult to pass through. In particular, thin wires, which are currently the mainstream of thin wires, are bundled. When crimping a multi-core cable with an object as a core, if a part of the core is caught in the entrance of the terminal hole, it will fall apart and cannot be inserted, so it will be extremely tired and burden the operator. Increase, which was one of the reasons for the lack of efficiency.

For these reasons, there has been a long-awaited demand for the development of a simple machine for crimping electric wires, which simplifies the operation, reduces the burden on the operator, and increases the efficiency.

According to the present invention, in order to respond to such demands, the power supply is used to automatically supply and crimp the terminals to the machine, thereby reducing the labor of the operator and facilitating the insertion of the electric wires. The aim is to improve the productivity of the crimping work by devising the structure of the guide as much as possible.

[0007]

In order to achieve the above object, the present invention comprises the following characteristic devices. First, using a chain terminal (32) in which chains are arranged side by side and connected by tape or the like to a terminal, a rotary crimping die (5) having a crimping die arranged on the outer periphery performs a rotary indexing operation by using a motor as a drive source. Automatically feed terminals one by one,
A rotary press die (5) device for discharging is provided. The rotary press die (5) is provided with a rotary insertion guide (6) having a conical guide hole, which rotates together with the die groove on the outer periphery. The conical guide hole of the rotary insertion guide (6) is in close contact with the hole of the terminal added to the rotary insertion die (5), thereby facilitating insertion of the electric wire by the operator. When an operator inserts an electric wire, a switch is operated, and a crimping press device with a crimping punch (4) driven by a motor automatically crimps the terminal. Since these devices are automatically operated in sequence by motor drive, the operator simply inserts the stripped wire at the tip along the guide hole and “crimps the terminal”.
→ “Discharge of crimped terminals and wires” → “Supply of new terminals” to complete the crimping of the terminals. Therefore,
The “terminal crimping operation” using the present machine greatly reduces the labor of the operator, and achieves extremely high productivity.
The above-described device devised in the chain terminal automatic crimping machine of the present invention will be described in more detail with the following (a) to (d).

(A) Rotary crimping die device capable of moving and crimping a chain terminal. Usually, crimping of a terminal is performed by inserting a cylindrical portion into which a wire is inserted into a terminal.
The crimping tool is inserted into the concave mold (die), the tip is pressed with a trapezoidal convex (punch), the terminal is dented, and crimping is performed.
According to the present invention, a rotary press die (5) is provided in which the die of the press tool is arranged in a gear shape on the outer periphery and can be rotated.
Here, the terminals of the chain are connected side by side, and the cylindrical part of the chain terminal is connected. When the rotary crimping die (5) rotates one tooth at a time, the chain terminal automatically moves,
If you crimp it every time, you can set the terminal once and supply it afterwards, you can perform crimping work continuously, and there is no need for workers to add terminals one by one. , Work becomes very efficient,
Be faster.

(B) A guide device for inserting the multi-core electric wire with the coating at the end into the terminal without disturbing the terminal hole. Just slightly larger than the outer diameter of the wire (33),
Since it is very small, even when using a hand-operated crimping tool, it is necessary to pay close attention to the work of passing the wire through the terminal hole. If there is a guide like a funnel that has a wide entrance and the inside is slightly thinner than the terminal hole, the worker only has to aim for the wide mouth and insert the wire, and the wire can be easily inserted into the terminal hole. You can put it inside. However, the multi-core electric wire (33) with the coating at the tip removed is poorly organized because the core is made up of many fine wires, is easily caught in small gaps, and tends to fall apart. Since it is impossible to insert the wire into the hole, it is preferable that the wire guide is a seamless, integral funnel-like shape, but then the crimped connected terminal and wire can be removed from the guide. Disappears. Therefore, in the present invention, the guide is divided into two. One is a rotary insertion guide (6), which is a disc-shaped rotary compression die (5) having the same diameter as the rotary compression die (5) and is used in close contact with the rotary pressure die (5). The same number of guide holes as the rotary crimping die (5) are arranged at the same pitch so that a funnel-shaped guide is formed toward the hole of each terminal when the terminal is inserted into each recess. And each guide hole is a rotary insertion guide (6).
A cut is made in the outer circumferential direction of the wire so that the crimped electric wire can be pulled out. In order to insert the multi-core electric wire (33) whose end is stripped for use in crimping caulking, the uppermost guide hole of the rotary insertion guide (6) will be used. The fixed insertion guide (7) is in close contact with the rotary insertion guide (6) along the scorpion angle so as to cover the notch. The fixed insertion guide (7) is slightly released so that the rotating surface of the rotary insertion guide (6) does not come into contact with the fixed insertion guide (7).
There is no gap between the two guides, the thin core wire of the electric wire does not get caught, and the rotation insertion guide (6) does not hinder the rotation. The guide device using the rotary insertion guide (6) and the fixed insertion guide (7) can simultaneously insert the thin core wire of the multi-core wire without being caught and easily take out the crimped and crimped wire. It's a great thing to make it possible.

(C) Feeding and fixing of a rotary press die using a cam and an index gear, the rotary press die (5) of the device (a) is connected to an index gear (10) having the same number of teeth. An index gear feeder provided with a gear feed claw (16) at its tip for rotating the index gear (10), and for stopping the rotation of the index gear (10). There is an indexing gear fixing device with a gear fixing wedge (11) attached to the tip, and these are a cam for a feed claw (23) and a cam for a fixed wedge (22), each of which is rotated by a motor.
As a result, the fixed wedge (11) comes off, the feed claw (16) moves, the fixed wedge (11) enters, and the feed claw (16) returns. One tooth is moving. Indexing gear (1
When 1) moves one tooth, the rotary crimping die (5) connected to it moves one tooth, and one chain terminal also moves. With this device, the chain terminals move stably at fixed positions one by one,
There is no deviation during crimping.

(D) Crimping press device using eccentric rotating roller The motor shaft is provided with a roller (25) that rotates eccentrically with respect to the motor shaft, and this is rotated by a motor (27) to form a press arm hinge pin ( When the crimping press arm (2) attached so as to swing in step 3) is pushed up, a very large force is generated by the principle of the press. When a crimping punch (4) is attached to the tip of the crimping press arm (2), a sufficient force for crimping can be obtained, and the worker can crimp without applying any force, so that a long working time can be achieved. Can be done without getting tired.

The mounting position of the eccentrically rotating press roller (25) is determined by the rotary press bonding die (5) using the feed claw cam (23) and the fixed wedge cam (22) described in (c). The crimping crimping is performed only when the operation timing is adjusted and the rotary crimping die (5) is fixed, so that it does not collide with the rotary crimping die (5) and can be instantly stopped by a signal. After a series of movements of the motor shaft for each rotation, feed of the chain terminal (32) → fixing of the chain terminal (32) → crimping of the chain terminal (32) It stops to wait for the insertion of the electric wire.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described based on embodiments with reference to the drawings. The device of the present invention is constituted by the following four devices. (B) Chain terminal feeder centered on a rotary crimping die (5) that automatically feeds the chain terminal and enables continuous crimping. (B) Workers can easily work without being caught in the middle. Insertion guide device centering on rotating insertion guide (6) and fixed insertion guide (7) that can insert thin wires and take out the wire after crimping and crimping. (C) Rotating compression die (5) and crimping die rotation The index gear (10) connected by the shaft (8) is fed and fixed by a tooth by a cam. The gear rotation centering on the gear feed pawl (16) and the gear fixing wedge (11). Equipment (d) Press roller (2) mounted eccentrically
5) A crimping press arm that generates a larger force (2)
Crimping press device having a crimping punch (4) attached to the tip of the device. Each of the devices (a) to (d) will be described with reference to examples.

(A) The rotary press die (5) is shifted by moving the press die stopper (9) according to the size of the terminal.
It can be replaced by removing it from the crimping die rotation shaft (8). When it is attached to the shaft, it is fixed to the shaft, and when the shaft rotates, it rotates in conjunction with it.

[0015] Since the concave shape (die) for crimping is formed at the same pitch as the chain terminal on the outer periphery of the rotary crimping die (5), the cylindrical portion of the chain terminal (32) is attached to the die of the rotary crimping die. The chain terminal (32) moves smoothly with the rotation of the rotary crimping die (5).

(B) The rotary insertion guide (6) is fixed integrally with the rotary press die (5), and always rotates together. The rotary insertion guide (6) is provided with a funnel-shaped guide having a wide entrance and a narrow exit on the outer periphery, a part of which is cut out in a V-shape. The diameter of the outlet hole coincides with the center of the die part of the crimping die (5), and is slightly smaller than the hole diameter of the terminal entering the die. It does not catch on the edge of the terminal.

A fixed insertion guide (7) provided with a scorpion at the same angle so as to cover the V-shaped portion of the guide hole is closed, so that there is no gap where an electric wire can be caught. The fixed insertion guide (7) is provided with a slight relief so as not to hinder the rotation of the rotary insertion guide (6).

The chain terminal lower guide (30) has an insertion side
It is longer than the fixed insertion guide (7) on the upper side to make it easier for the operator to insert the chain terminal (32), and guides the cylindrical portion of the chain terminal (32) from above and below.
The entry of the chain terminal (32) is stabilized.

The downstream extension of the lower guide of the chain terminal is gradually raised, and the crimped chain terminal (32) is automatically inserted from the V-shaped notch of the rotary insertion guide (6). Is coming out.

(C) Since the rotary shaft (8) and the index gear (10) are fixed, the rotary die (5) attached to the rotary shaft (8) is an index gear. It rotates completely in synchronization with (10), and the indexing gear (1)
Since the number of teeth of 0) and the number of dies of the rotary press die (8) are the same, when one tooth of the index gear (10) is fed, the die of the rotary press die (8) rotates by one. , Chain terminal (3
2) Move one.

[0021]

As shown in FIG. 3, a cam (23) for feeding pawls and a cam (22) for fixed wedges are attached to a cam shaft (28) which is directly connected to a motor (27) and rotates.

Around the index gear (10),

As shown in FIG. 4, a gear feeding device centering on a gear feeding claw (16) and a gear fixing device centering on a gear fixing wedge (11) are arranged.

In the gear feeder, a gear feed pawl (16) is mounted at one position of a feed pawl arm (18) mounted so as to be rotatable about a feed pawl arm hinge pin (19), and at another position. Is provided with a feed claw roller (17) for moving the feed claw arm (18) against the feed claw cam (23). When the roller is pressed by the cam, the gear feed claw (16) causes the gear Hit the teeth
When the cam is no longer pushed by one tooth, the spring is returned by the feed claw arm spring (21). At that time, the gear feed pawl (16) returns while the head is lowered with the feed pawl spring (20) losing.

The gear fixing device is provided with a gear fixing wedge (1) at one position of a fixed wedge arm (13) mounted so as to be rotatable about a fixed arm hinge pin (14).
1) is attached, and a fixed wedge roller (12) for moving the fixed wedge arm (13) is attached to the fixed wedge cam (22) at another location, and when the roller is pressed by the cam, The wedge (11) for fixing the gear comes off between the teeth of the gear, and the index gear (10) becomes rotatable. When the cam is no longer pushed, the wedge is returned by the spring (15) for the fixed wedge arm. ,
It fits between the gear teeth and fixes the index gear (10) so that it cannot rotate.

The gear fixing wedge (11) is usually fitted on the indexing gear (10) to fix the gear, and when the gear is rotated, the gear feeder and the gear fixing device fix the gear. The wedge (11) comes off → the gear feed pawl (16) moves and the gear rotates → the gear fixing wedge fits between the teeth and the gear is fixed → the gear feed pawl (16) returns to operate. A cam shape is made.

(D) The crimping punch (4) is mounted on the tip of a crimping press arm (2) mounted to swing around the arm hinge pin (3). A roller receiving plate (29) is attached to the other end of the crimping press arm (2) via a urethane spring (30). The camshaft (24) directly connected to the brake motor (27) has a pressing roller (2) at an eccentric position.
5) is attached, and when the cam shaft (24) rotates, the pressing roller (25) hits the roller receiving plate (29) and pushes up. Generate strong force.

Even when there is a slight variation in the thickness of the material to be crimped, stable crimping can be performed by the flexure of the urethane spring (29).

A press roller (2) for moving a press press arm (2) is used for crimping by a press punch (4) as when the rotary press die (5) is fixed.
5) and the positions of the feed claw cam (23) and the fixed wedge cam (22) for rotating the rotary pressure bonding die (5) are determined. It does not move.

[0029]

Since the present invention is constituted by the characteristic device as described above, it has the following effects.

There is no need to grip the small loose crimp terminals one by one and add them to the crimping tool. Once the chain terminals have been set, the operator only needs to insert the wires and crimp crimping one after another. Therefore, the efficiency of the crimping operation becomes very high.

Since there is a funnel-shaped guide in contact with the hole of the terminal, the insertion of the electric wire is easy, not only does not tire the operator nervously, but also exerts a great effect on work efficiency.

Since crimping is performed by using the motor as a driving source, there is no physical burden on the operator, and the operator is released from excessive fatigue.

Since crimping is performed by using a press device using a motor as a driving source, the crimping force is stabilized, and the quality of the crimping is stabilized.

[Brief description of the drawings]

FIG. 1 is a front view of a chain terminal automatic crimping machine.

FIG. 2 is a sectional view of a chain terminal automatic crimping machine.

FIG. 3 is a plan view of a chain terminal automatic crimping machine.

FIG. 4 is an AA cross-sectional view of the automatic crimping machine for chain terminals.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Outer box 2 Crimping press arm 3 Arm hinge pin 4 Crimping punch 5 Rotating crimping die 6 Rotating insertion guide 7 Fixed insertion guide 8 Crimping die rotation shaft 9 Crimping die stopper 10 Indexing gear 11 Gear fixing wedge 12 Fixed wedge roller 13 Fixed wedge arm 14 Fixed arm hinge pin 15 Fixed wedge arm spring 16 Gear feed claw 17 Feed claw roller 18 Feed claw arm 19 Feed claw arm hinge pin 20 Feed claw spring 21 Feed claw arm spring 22 Fixed wedge cam 23 Feed claw Cam 24 Cam shaft 25 Press roller 26 Press roller shaft 27 Brake motor 28 Roller receiving plate 29 Urethane spring 30 Chain terminal lower guide 31 Fixed wedge removing pin 32 Chain terminal 33 Wire with stripped coating at the tip

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[Procedure amendment]

[Submission date] September 9, 1997

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Fig. 5

[Correction method] Added

[Correction contents]

FIG. 5 is an enlarged detailed view of a crimping portion of the chain terminal automatic crimping machine.

Claims (4)

[Claims] 1. A crimping die is arranged on the outer periphery of a disk in the form of a gear.
A rotary crimping die (5) device which is rotatable and engages with a chain terminal so that it can be moved and crimped sequentially. 2. A conical guide hole is formed at an equal pitch with the die of the rotary press die (5) near the outer periphery of the disk rotating with the rotary press die (5). A rotary insertion guide (6) with a cut for the crimped and crimped electric wire to escape, and a slight relief process so as not to hinder the rotation of the rotary insertion guide (6). An electric wire insertion guide device, comprising: a fixed insertion guide (7) having a structure in which the notch in the guide hole is closed along the sassoy angle of the guide so as to close the notch. 3. An index gear feeding device having a gear feeding claw (16) at the tip thereof on the outer periphery of an index gear (10) directly connected to a rotary pressure bonding die (5), and rotation of the index gear (10). There is an index gear fixing device with a gear fixing wedge (11) at the tip to stop the rotation, and these are driven by respective cams rotated by motors, and the rotary press die (5) An indexing device that performs an indexing operation. 4. A crimping press which eccentrically attaches a press roller (25) to a rotating shaft and rotates the crimping press arm (2) to generate a crimping force of a terminal by rotating the press roller (25). apparatus.