JP3160785B2 - Measurement and clamping mechanism of wire termination machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used for an electric wire terminal processing machine for crimping a terminal to an electric wire whose cut end is stripped, and particularly measures and clamps the electric wire to a predetermined length. It relates to a length measuring and holding mechanism.

[0002]

2. Description of the Related Art In general, an electric wire terminal processing machine has a length measuring and holding mechanism a shown in FIG. 3, and the length measuring and holding mechanism a is provided with a length measuring means b arranged in the flow direction of the electric wire w and in a horizontal direction. And holding means d which can be swung by the provided support shaft c.

The crimping of the terminal t to the end of the electric wire w has been performed by the interlocking movement of the lowering operation f of the crimping means (not shown) for crimping the terminal t and the swinging operation e of the holding means d.

[0004]

However, in the conventional length measuring and holding mechanism a, the terminal t pressed by the crimping means is used.
The downward movement f follows a vertical trajectory, whereas the end of the electric wire w interlocked with the downward movement f moves along an arc trajectory centered on the support shaft c.

[0005] This means that the middle part of the electric wire w is the length measuring means b.
In addition to the bending between the terminal w and the clamping means d, the relative movement between the end of the electric wire w and the terminal t causes disturbance in the crimping position of the terminal, damage to the electric wire w, and variation in the measured length. there were.

In view of such conventional circumstances, the present invention makes it possible to simultaneously lower the length measuring roller and the holding means in the vertical direction, and to match the lowering locus of the end of the electric wire with the lowering locus of the terminal by the crimping means. It is an object of the present invention to provide a length measuring and holding mechanism for an electric wire terminal processing machine.

[0007]

According to the present invention, there is provided a length measuring and holding mechanism for an electric wire terminal processing machine, comprising a length measuring means and a holding means, wherein the holding means is vertically movable in conjunction with a crimping means. In the wire terminal processing machine, the length measuring means is pivotally supported by a pair of input shafts which are horizontally supported on a base, and a base end of a roller support arm which can be bent and stretched via an intermediate shaft. The roller shafts pivotally supported at the distal ends of the respective roller support arms can be vertically moved up and down via a roller shaft bracket, and the rotation can be regulated during the elevating operation. The length measuring roller can be moved up and down for each roller shaft in the vertical direction in synchronization with the holding means by an interlocking lever interposed between the holding means and the roller shaft bracket.

[0008]

The electric wire is measured to a predetermined length by the length measuring means, cut and sent to the crimping means, and when the terminal portion reaches an area suitable for terminal crimping, the electric wire feeding operation is stopped.

Subsequently, when the crimping operation of the crimping means is started, when the holding means performs a vertical lowering operation in conjunction with the crimping operation, the lowering operation is performed from the interlocking lever via the roller shaft bracket to the roller shaft. And transmitted to the length measuring roller, and the length measuring roller performs a vertical descending operation together with the roller shaft in synchronization with the holding means.

Since the rotation of the roller shaft to which the length measuring roller is attached can be regulated during the lowering operation, the length measuring roller does not rotate due to the lowering operation.

When the crimping operation is completed, the holding means and the length measuring means are raised synchronously.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

The length measuring and holding mechanism 1 shown in FIGS.
It comprises length measuring means 2, holding means 3 and interlocking lever 4.

The length measuring means 2 is for measuring a long wire W to a predetermined length, and includes a driving device 5, input shafts 6A and 6B,
Roller support arms 7A and 7B, roller shafts 8A and 8B, length measuring rollers 9A and 9B, roller shaft bracket 10, first transmission unit 11, and second transmission units 12A and 12B are configured as main components.

The drive unit 5 is mounted on a base B of an electric wire terminal processor (not shown) so that the output shaft 5a is horizontal by applying a servomotor or the like, for example.

The input shafts 6A and 6B are
A fixed fulcrum shaft for supporting the base end K of each of the bases A and 7B, most of which is pivotally supported by a bearing 13 on the base B side, and has a shaft end protruding toward the driving device 5 side, to which an input described later is attached. The side driven pulley 29 and the input side drive pulley 33 are attached.

The roller support arms 7A and 7B are configured such that a first arm member 14 and a second arm member 15 can be bent and extended by an intermediate shaft 16 and two bearings 17 mounted on the intermediate shaft 16. While the base end K of the arm member 14 is pivotally supported by the input shafts 6A and 6B via two bearings 18, the second arm member 15 has the distal end S at the roller shafts 8A and 8B via two bearings 19. And a base end K is pivotally supported by the bearing 17.

Further, the tip S of each second arm member 15
A tension spring 20 for urging the length measuring rollers 9A and 9B in a direction of pulling each other is provided between them.

The roller shafts 8A, 8B are
A movable fulcrum shaft for supporting the distal end portion S of each of the shafts A and 7B. The length measuring rollers 9A and 9B are fixed to each shaft end on one side, and the roller shaft bracket 10 is fixed to the other shaft end on each side. Is installed.

A known elastic material is applied to the length measuring rollers 9A and 9B so as to feed the wire W across both sides thereof.

The roller shaft bracket 10 has a length measuring roller 9
A, 9B is attached to the roller shafts 8A, 8B in order to lower the A, 9B in the vertical direction in synchronization with the holding means 3, and includes a bracket body 21, a bearing 22, a slide 23, a guide rail 24, a lever receiver 25, and a guide. It consists of a rod 26 and a compression spring 27.

The bracket body 21 includes roller shafts 8A, 8A.
A shaft end on one side of B is pivotally supported by a bearing 22, and a slider 23 provided on the back side of the bearing 22 slides on a guide rail 24 on the base B side so as to be able to move up and down in the vertical direction. ing.

Further, the bracket body 21 attached to the lower roller shaft 8A has a T-shaped lever receiver 25 extending downward.

The flange 2 on one side of the lever receiver 25
5a is provided with a through hole (not shown), through which a guide rod 26 erected on the base B is inserted, while the other side of the lever receiver 25 is provided with an interlocking lever 25b. A cam follower 47 described below is mounted on the cam follower.

Lower roller shaft 8A and bracket body 21
The lever receiver 25 is urged upward by a compression spring 27 fitted to a guide rod 26 to support the lower surface of the lever receiver 25.

The first transmission unit 11 is connected to the output shaft 5a of the driving device 5.
And a base pulley 29 formed integrally with the input drive pulley 33 of the second transmission parts 12A and 12B so as to be mounted on the projecting ends of the input shafts 6A and 6B. B includes an idler 30 and a double-sided toothed belt 31.

The second transmission parts 12A, 12B are connected to the input shaft 6A,
6B together with the input driven pulley 29 via two bearings 32.
3, an intermediate pulley 35 attached to the intermediate shaft 16 via two bearings 34, a driven pulley 36 fixed to the roller shafts 9A and 9B, a first timing belt 37 and a second timing 38. .

The input drive pulley 33, the intermediate pulley 35, and the driven pulley 36 of the above-described second transmission portions 12A and 12B have roller shafts 8A and 8B whose length measuring rollers 9A and 9B are used.
B, the vertical measuring operation is performed even if the vertical
All are formed to have the same diameter so as to restrict the rotation of A and 9B.

The holding means 3 includes a body 39 having a known holding function and a lifting rod 4 projecting downward from the body 39.
0, a holding member 41 extending from the base B so as to hold the lifting rod 40 so as to be able to move up and down, and a lifting rod 40 between the main body 39 and the holding member 41 to urge the main body 39 upward. A compression spring 42 that has been loosened, a slider 43 provided on one side of the main body 39, a guide rail 44 provided on a base B for vertically moving the slider 43, and a main body 3.
9 and a well-known pull-down lever 45 provided on the other side.

The pull-down lever 45 is provided with a cam follower 5 of a lower swing arm 51 of a crimping means (not shown).
2 is mounted.

The interlocking lever 4 transmits the elevating operation of the holding means 3 to the length measuring rollers 9A, 9B via the roller shaft bracket 10 and the roller shafts 8A, 8B, thereby causing the elevating operation of the length measuring means 2 in the vertical direction. It is synchronized with the vertical movement of the holding means 3 and includes a lever body 46 extending from a main body 39 of the holding means 3 and a cam follower 47 provided at a tip end of the main body 46.

Reference numeral 53 denotes an upper die for crimping the terminals, and reference numeral 54 denotes a lower die.

Next, the operation and operation of the above embodiment will be described.

When the driving device 5 is started, the output shaft 5
a of the input shafts 6A, 6B via the first transmission unit 11.
The rotation of the input shafts 6A, 6B is further transmitted to the roller shafts 8A,
8B, and the length measuring rollers 9A and 9B rotate.

After the wire W is measured to a predetermined length by the rotation of the length measuring rollers 9A and 9B and cut, the wire W is pinched by the pinching means 3 and enters the crimping means. When approaching the joining area of the upper mold 53 and the lower mold 54 to be crimped, the driving device 5 stops based on a detection signal from a sensor or the like that detects the terminal portion E, and the crimping operation of lowering the upper mold 53 of the crimping means is performed. Is activated.

The lower swing arm 5 interlocking with this crimping operation
The swing motion of the cam follower 52 causes the compression spring 42
When the pull-down lever 45 is pulled down against the resilience of the gripper 3, the holding means 3 moves down the slider 43 on the guide rail 44 in the vertical direction.

This lowering operation is carried out from the cam follower 47 of the interlocking lever 4 via the roller shaft bracket 10 to each roller shaft 8.
The roller shafts 8A and 8B are moved vertically together with the length measuring rollers 9A and 9B and the roller shaft bracket 10 while being guided by the guide rail 24 against the elastic force of the compression spring 27. .

During this lowering operation, each roller support arm 7
The distance between the input shafts 6A, 6B pivotally supporting both ends of the shafts A, 7B and the roller shafts 8A, 8B is determined by the distance between the shafts 6A, 6B, 8
The first and second arm members 14 and 15 with the A and 8B and the respective intermediate shafts 16 as fulcrums are always kept constant by the bending and stretching operations.

Therefore, the length measuring means 2 and the holding means 3 descend in the vertical direction in synchronization with the crimping operation of the crimping means, and the input side driving pulley 33, the intermediate pulley 35 and the driven side pulley 36 are all formed to have the same diameter. As a result, the rotation of the roller shafts 8A, 8B and the length measuring rollers 9A, 9B is restricted, so that the electric wire W is moved in the vertical direction and the front-rear direction between the length measuring means 2, the holding means 3, and the crimping means, respectively. There is no displacement in the length direction of the wire.

On the other hand, when the crimping operation of the crimping means is completed and the lowering force of the lower swing arm 51 is removed, the holding means 3 returns to the original position by the elastic force of the compression spring 42, and the length measuring means 2 also returns. It returns to the original position in synchronization with the holding means 3 by the elastic force of the compression spring 27.

[0041]

According to the present invention, a wire measuring and clamping mechanism for a wire terminal processing apparatus includes a length measuring means and a clamping means, and the clamping means is vertically movable in conjunction with a crimping means. The length measuring means is pivotally supported on a pair of input shafts which are horizontally supported on a base by a base end portion of a roller supporting arm which can be bent and extended via an intermediate shaft. The roller shafts pivotally supported at the distal ends of the support arms can be vertically moved up and down via roller shaft brackets, and the rotation at the time of elevating operation can be restricted,
Since the length measuring roller attached to each roller shaft can be moved up and down in the vertical direction in synchronization with the holding device by an interlocking lever interposed between the holding device and the roller shaft bracket, Disturbances in the crimping position of the terminals, damage to the wires, and variations in the measured length are eliminated, and the quality of processed products is significantly improved.

Further, since the elevating operation of the length measuring roller is performed by the relative sliding between the slider of the roller shaft bracket and the guide rail, there is no possibility of giving an impact to the driving device, and the reliability of the equipment is greatly improved. There are excellent advantages such as.

[Brief description of the drawings]

FIG. 1 is a front view showing a main part of a length measuring and holding mechanism in a partial cross section.

FIG. 2 is a plan view showing a main part of the length measuring means in a partial cross section.

FIG. 3 is a schematic view showing a conventional example of a length measuring and holding mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Length measuring and holding mechanism 2 Length measuring means 3 Holding means 4 Interlocking lever 6A, 6B Input shaft 7A, 7B Roller support arm 8A, 8B Roller shaft 9A, 9B Length measuring roller 10 Roller shaft bracket 16 Intermediate shaft S Front end K Base end Part B Base W Electric wire E Terminal part

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H01R 43/052 H01R 43/28

Claims (1)

(57) [Claims] 1. An electric wire terminal processing machine comprising a length measuring means and a holding means, wherein the holding means is vertically movable in conjunction with a crimping means, wherein the length measuring means is horizontally mounted on a base. The pair of input shafts pivotally supported at the base ends of the roller support arms, which can be bent and stretched via intermediate shafts, are pivotally supported, and the roller shafts pivotally supported at the distal ends of the respective roller support arms are roller-supported. The shaft can be raised and lowered in the vertical direction via the shaft bracket, and rotation can be restricted during the lifting and lowering operation. A length measuring roller attached to each roller shaft is interposed between the holding means and the roller shaft bracket. A length measuring and holding mechanism of an electric wire terminal processing machine, wherein each of the roller shafts can be moved up and down in a vertical direction in synchronization with a holding means by an interlocking lever.