JP3338375B2 - Terminal crimping device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal crimping device, and more particularly to a terminal crimping device for attaching a metal terminal to the tip of an insulated wire or the like by a crimping operation.

[0002]

2. Description of the Related Art A terminal used in the present invention is as shown in FIG. 10, and comprises a Y-shaped, round-shaped, rod-shaped tip 46 and a pipe-shaped crimping portion 50. After inserting the lead wire, the crimping portion is crushed and fixed to the lead wire. Conventionally, this terminal crimping work has been performed manually using only crimping pliers.

[0003]

As described above, conventionally, the above terminal crimping work has been exclusively performed manually.
Crimping work with crimping pliers requires a certain amount of force and there is a limit to the work, so work efficiency is inevitably poor, and unevenness in the finish is likely to occur due to force adjustment,
There is also a problem in terms of uniformity of finish and reliability.

Accordingly, an object of the present invention is to provide a terminal crimping apparatus which does not have such a problem, that is, which can efficiently perform a terminal crimping operation and can expect a uniform and reliable finish. .

[0005]

According to the present invention, there is provided a means for transporting a tape carrying a large number of terminals so that the terminal can be pulled out therefrom, and a pipe-like crimping portion of the terminal into which a lead wire has been inserted, which is vertically pressed. Means for crushing by pressing, and the pipe-shaped crimping portion
Holding means for guiding the insertion of the lead wire into the inside and holding the lead wire during the crushing operation.
The conveying means, the crushing means and the holding means are all cam driven
And the cams are integrally fixed to one camshaft.
It is fixed and works synchronously
The above problem was solved by a terminal crimping device . Usually, the conveying means is provided by a swinging rod which swings by the action of a cam.
Equipped with a ratchet that is driven to rotate at a fixed angle, and
A hook pin that hooks into the pitch hole formed in the tape
It is an intermittent feeding drum.

[0006]

Embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a side view thereof, and FIG. 2 is a front view thereof. In FIG. 1, reference numeral 1 denotes a main body case, from which cam driving motor 2 is exposed from one side. The head of the cam drive motor 2 faces the case 1 and is fixed to a motor mounting plate 3 erected there. The drive shaft of the cam drive motor 2 is fixed to the cam 4 for caulking.

The caulking cam 4 is rotatably supported by a motor mounting plate 3 and a shaft supporting plate 5 erected in parallel with the motor mounting plate 3. The central part of the caulking cam 4 is enlarged in diameter, and an elliptical cam groove 6 is formed at the front end face thereof, and an elliptical axis 7 extending further forward in an elliptical column shape is formed at the central part. (See FIGS. 3 and 4). A pair of two cam followers 8 and 9 are fitted into the cam groove 6 up and down, and the cam followers 8 and 9 abut against and follow the elliptical shaft 7,
Moves in the opposite direction with the rotation of.

The upper cam follower 8 has a lower die 1
The die mounting plate 13 having the upper die 10 is fixed to the lower cam follower 9.
1 is fixed. The upper die 10 has a convex portion 14 in the center of the lower surface, the lower die 12 has a concave portion 15 corresponding to the convex portion 14 in the center of the upper surface, and the upper die 10 and the lower die 12 are close to each other. Then, the convex portions 14 are arranged so as to face the concave portions 15 (see FIG. 2).

A guide opening / closing cam 18 having cutouts 16 and 17 formed at symmetric positions is installed at an intermediate portion of the caulking cam 4 (see FIG. 5). The guide opening / closing cam 18 is used to open and close guide blocks 26 and 27 serving as a guide when a lead wire is inserted into a terminal to be described later.
The driving lever 19 is rotated through the projection 20 of the driving lever 19 which comes into contact with the peripheral side surface of the driving lever 19. The driving lever 19 is pivotally supported between the motor mounting plate 3 and the shaft supporting plate 5, and has a spring mounting post 19 provided at an intermediate portion thereof.
a and a return spring 22 arranged between the shaft support plate 5,
It is always in a tensioned state (see FIG. 4). Drive lever
A chamfered action portion 21 is formed at the end of the projection 19 outside the shaft support plate 5.

The action portion 21 always comes into contact with receiving plates 24 and 25 arranged above and below, and moves them up and down. The lower receiving plate 24 is slidably inserted into the upper guide block 26 and attached to the lower end of a slide shaft 28 fixed to the lower guide block 27 (FIG. 5).
reference). The upper receiving plate 25 is fixed to the upper guide block 26 and is attached to the lower end of a slide shaft 29 that is slidably inserted into the lower guide block 27.

The slide shafts 28 and 29 are provided on the main body casing.
In the support block 30 installed in the base 1, it is slidably supported in the vertical direction. On the upper part of one slide shaft 28, a pressing spring 31 held down by a spring stopper 32 is mounted. The pressing spring 31 comes into contact with the upper surface of the guide block 26 and acts to always press the guide block 26.

Each of the guide blocks 26 and 27 has a work guide 33 in the form of a trumpet which expands outward when they are joined together, and a lead wire introduction path 34 is formed at the deepest portion thereof. It has become.

A ratchet 37 and a ratchet shaft 38 are supported at the upper portion of the motor mounting plate 3. An intermittent feed drum 39 is provided at the tip of the ratchet shaft 38.
Is fixed. The intermittent feed drum 39 has hooking pins 40 projecting at regular intervals on the peripheral surface.
A stopper ring 41 is provided at the end on the seventh side. The intermittent feed drum 39 carries a terminal 46 carried on a tape 45 as shown in FIG. 9, and a hook pin 40 is hooked on a pitch hole 47 formed in the tape 45. Therefore, it goes without saying that the interval between the hook pins 40 and the interval between the pitch holes 47 are made to match.

The terminal carrying tape 45 is formed by laminating two tape materials made of, for example, polyethylene or paper, and the hatched portion in FIG. 9 is fixed by fusing, bonding, or the like. Therefore, the terminal 46 is kept inserted between the tapes,
Extraction becomes possible. Preferably a terminal carrying tape 45
Is made into a cassette in a wound state so that it can be exchangeably loaded at the entrance of the tape guide 49 of the main body case 1.

The terminal carrying tape 45 is intermittently rotated by a feed drum 39 based on the action of a ratchet 37 described later.
The main body case 1 is conveyed along a tape guide 49 formed from the rear side to the front side. In this process, the terminal 46 of the hook pin 40 located at the uppermost part of the feed drum 39 is subjected to a crimping process by a process described later, that is, a ream in which the coating 51 is removed from the pipe portion 50.
After the wire 54 is inserted, the pipe 50 is crushed.

Next, the driving mechanism of the ratchet 37 shown in FIGS. 7 and 8 will be described. Reference numeral 55 denotes a swinging rod that rotates about a shaft 56. A pawl 57 that engages with the teeth of the ratchet 37 is rotatably mounted on the upper part, and a cam follower 58 is mounted on the lower part. Since the tension spring 59 is provided between the pawl 57 and the swinging rod 55, the pawl 57 is always in contact with the ratchet 37. Further, by attaching a tension spring 60 to the lower end of the swinging rod 55, the cam follower 58 is always in contact with the tape feed cam 61.

The tape feed cam 61 is provided with the caulking cam 4.
(See FIGS. 1 and 2).
reference). The tape feed cam 61 has a weight shape (FIG. 8).
When the cam follower 58 is in contact with the narrow portion, the swinging rod 55 is pulled by the tension spring 60 and inclined (the state shown by the phantom line in FIG. 8), and the cam follower 58 contacts the wide portion. When in the swinging position, the swinging rod 55 is in a vertical state.

As the swinging rod 55 shifts from the vertical state to the inclined state, the pawl 57 is disengaged from the tooth of the ratchet 37 which has been engaged, and is engaged with the next tooth. Then, the tooth is pushed by returning to the vertical state again, and the ratchet 37 is rotated by one pitch. This one pitch corresponds to the distance between the punch holes 47 of the tape 45. In order to prevent the ratchet 37 from rotating in the reverse direction during this operation, a reverse rotation preventing claw 62 is provided on the motor mounting plate 3. The reverse rotation preventing claw 62 is always pulled by a tension spring 63 and is brought into contact with the ratchet 37.

Reference numeral 51 denotes a rotation detecting cam fixed to an end face of the elliptical shaft 7 by a knob 52. The cam acts on a switch 53 at a convex portion thereof to control the rotation of the cam drive motor 2. In FIG. 5, reference numeral 65 denotes guide blocks 26 and 27.
1 shows a sensor for detecting the movement of the object. In FIG. 6, reference numeral 66 denotes a lead wire 54 inserted into the pipe portion 50 of the terminal.
The cam drive motor 2 is started by the touch sensor having a stopper function for regulating the advancing end of the leading end of the lead wire 54 when the leading end of the lead wire 54 is touched.

In the above construction, the guide opening / closing cam 18,
The tape feeding cam 61 and the rotation detecting cam 51 are fixed to the caulking cam 4, rotate integrally and act synchronously, and complete one cycle (terminal crimping completed) by half a rotation. . FIG. 11 shows the operation of each cam in this one cycle.

The start of rotation of the caulking cam 4 is assumed to be the time when the upper and lower dies 10, 12 are closed and the terminal 46 is clamped, and the guide blocks 26, 27 are also closed (FIG. 11 ( A)). When the caulking cam 4 starts rotating at that time, the long side of the elliptical shaft 7 becomes vertical, and when the cam drive motor 2 stops, the cam followers 8, 9 are farthest apart vertically (FIG. 11). (B)). As a result, the upper and lower dies 10, 12 are closest to each other via the die mounting plates 11, 13.
The pipe portion 50 into which the lead wire 54 is inserted is crushed and caulked.

During this time, the projecting piece 20 of the drive lever 19 has escaped to the notch 16 (or 17) of the guide opening / closing cam 18, so that the action portion 21 is in a horizontal state and the receiving plates 24, 25
And the guide blocks 26 and 27 remain closed.

When the caulking cam 4 starts rotating again after the caulking operation is completed, the upper and lower dies 10, 9 are moved as the cam followers 8, 9 move in the approaching direction with the rotation of the elliptical shaft 7.
12 opens. Further, the protruding piece 20 is tilted by detaching from the cutouts 16 and 17, and the action part 21 acts to separate the receiving plates 24 and 25. As a result, the upper and lower dies 10, 12 are separated, and the clamped terminal 46 is released. You. At the same time,
The swinging rod 55 is inclined by the action of the tape feed cam 61, and the pawl 57 is disengaged from the tooth of the ratchet 37 with which the ratchet 37 has been engaged. At this point, the lead wire 54 to which the terminal is attached is usually drawn out manually.

Next, when the rotation of the cam 4 for caulking advances,
As the swinging rod 55 returns to the vertical state, the ratchet 37 is pressed by the claw 57 and rotated, so that the intermittent feeding drum 39 is rotated.
Rotates by one pitch to advance the tape 45 one pitch,
Next, the terminal 46 to be crimped is positioned between the upper and lower dies 10 and 12 (FIG. 11F). Therefore, a new lead wire 54
Is manually inserted into the pipe portion 50 of the terminal 46 by using the lead wire introduction path 34 of the guide blocks 26 and 27 by manual operation. Thereafter, the above operation is repeated according to the intermittent rotation of the caulking cam 4.

[0025]

As described above, the present invention is capable of performing the crimping operation of the terminals efficiently without any manual operation, and can achieve a uniform finish so that the operation is reliable. There is an effect that can be.

[Brief description of the drawings]

FIG. 1 is a left side view of a terminal crimping apparatus according to the present invention.

FIG. 2 is a front view of the terminal crimping device according to the present invention.

FIG. 3 is a vertical sectional view on the left side of the terminal crimping device according to the present invention.

FIG. 4 is a view showing a conveying means and a cam in the terminal crimping device according to the present invention.

FIG. 5 is a view showing an opening and closing mechanism of a guide block in the terminal crimping device according to the present invention.

FIG. 6 is a detailed view of a crimping portion in the terminal crimping device according to the present invention.

FIG. 7 is a view showing a drive mechanism of an intermittent feed drum in the terminal crimping device according to the present invention.

FIG. 8 is a view showing a drive mechanism of an intermittent feed drum in the terminal crimping device according to the present invention.

FIG. 9 is a view showing a terminal carrying tape used in the terminal crimping device according to the present invention.

FIG. 10 is a view showing a terminal to be processed in the terminal crimping device according to the present invention.

FIG. 11 is a view showing the movement and operation of each cam in the terminal crimping device according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body case 2 Cam drive motor 3 Motor mounting plate 4 Cam for caulking 5 Shaft support plate 6 Cam groove 7 Elliptical axis 8 Cam follower 9 Cam follower 10 Upper die 11 Dice mounting plate 12 Lower die 13 Dice mounting Plate 14 Convex part 15 Concave part 16 Notch part 17 Notch part 18 Guide opening / closing cam 19 Drive lever 19a Spring mounting post 20 Protrusion piece 21 Working part 22 Return spring 24 Receiving plate 25 Receiving plate 26 Guide block 27 Guide block 28 Slide shaft 29 Slide Shaft 34 Lead wire introduction path 37 Ratchet 39 Intermittent feed drum 45 Tape 46 Terminal 50 Pipe section 54 Lead wire 57 Claw

Claims (3)

(57) [Claims] And 1. A number of means terminals for sampling capable carried conveyed constant pitch destined to tape and re - means for crushing the pipe-shaped crimping portion of the terminal inserting the lead wires from the upper and lower pressurizing, the Insertion of the lead wire into the pipe crimp
And holding means for holding the lead wire during the crushing operation , the transporting means, the crushing means and
The holding means are both driven by a cam, and the cams
Are integrally fixed to one camshaft and operate synchronously.
A terminal crimping device characterized by being made. 2. The apparatus according to claim 1, wherein said conveying means includes a ratchet which is driven to rotate at a constant angle by a swinging rod which swings by the action of a cam, and a hook pin which hooks into a pitch hole formed in said tape. The terminal crimping device according to claim 1, wherein the terminal crimping device has an intermittent feed drum. 3. The terminal crimping apparatus according to claim 1, wherein said tape is formed into a cassette in a wound state.