JPS63174834A - Spring supplying jig - Google Patents

Abstract

PURPOSE:To repeat a boundary between a hook part and a coil part at the specified position, by mounting the expansion coil spring hook part on a pair of hook bearers, inserting a pair of hook pins thereinto, and sliding a movable side hook bearer in the coil shaft center direction. CONSTITUTION:An expansion coil spring is mounted on hook bearers 20 and 22, and when a pair of actuators are operated, a pair of hook pin 28 are rotated as far as 180 deg. around each center shaft of pins 24 via members 25, and inserted into a hook part of the extension coil spring and an escape hole 27 in these hook bearers 20 and 22. Next, if an air cylinder 23 is operated and the hook bearer 22 is retracted, the paired hook pins 28 are expanded to the specified interval, and simultaneously the extension coil spring is extended in the tensile direction as an inner circumference of the hook part is hooked. A boundary part between the hook part and the coil part is positioned in the specified position in good repeatability.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention is intended to improve the quality of tension coil springs with poor quality tension coil parts in which the length of the coil part is not constant due to variations in the number of turns of the coil part. too.

This item relates to a jig for supplying springs that can be used to reliably perform spring hanging work.

[Conventional technology]

@ Figure 6 to Factor 12 show examples of devices for performing conventional spring hanging work Jl&, @ Figure 6 is a front view of the hand for spring hanging work, Figure 1g7 is a side view of the main parts of Figure 1g6, @8
The cause is a front view showing the positional relationship between the spring-loading node and the spring-supplying jig at the start of operation, Figure @9 is a side view of the main part with the claw open, and Figure 1O is the spring-loading hand. Figure 11 is a front view showing the hook part being inserted into the hook receiver.
FIG. 12 is a plan view showing the positional relationship between the spring supply jig and the tension coil spring. As shown in Figure 1g6 and Figure 7.

The spring-loading work hand (1) is guided by two guide shafts (3) fixed to the frame (2) and is slidably supported while maintaining a parallel state. The pin (5) is rotatably supported by a pair of fingers (4) and a pair of pins (+5) for each of the pair of fingers (4).
A pair of claws (8) having a hinion (6) coaxially with the hook part and a hook part rotation prevention groove (1) at one end, and a pair of claws (8) that are screwed together with the pair of pinions (6) to move in a straight line; The above pair of claws (8
), a pair of air cylinders αQ that are fixed to each of the pair of fingers (4) and move the rank (9) in a straight line, and one end of each of them is attached to the top of the pair of fingers (4). with a fixed rack αυ and a pair of rank 0
An air cylinder (6) having a pinion @ which is screwed together with υ and rotatably fixed to the frame (2), a rond whose tip is fixed to the -10,000 fingers of a pair of fingers (4), and the frame. (2) and a pair of stompers fixed to the stomper.

The operation of the conventional example as described above will be explained as follows. Figure @8 is a sectional view showing the positional relationship between the spring hanging work hand (1) and the spring supplying jig α at the start of operation. S is placed a on the spring supply jig (G). Here, as shown in Figure 9g9, operate the air cylinder αQ8 to push out the rank (9), open the pawl (8), and lower the spring-loading work-1 hand (11), as shown in Figure 1O. The state will be as shown in .

After this, if the air cylinder αQ8 is activated to pull the rank back to its original position, the claw (8) will close and the hook part rotation prevention groove (7) provided in the claw (8) will be inserted into the tension coil part (near α
- Hold the tension coil spring αe by sandwiching the boundary between the hook part and the coil part. Next, raise the hand (1) for hook hooking work, operate the air cylinder (to), open the distance between the fingers (4) to a predetermined size regulated by stopper α4, and set the predetermined assembly position. After moving the product above the product, lower it and insert it into the hook receiver CIη of the hook part 8'41 of the 94% recoil spring O0 held to a predetermined depth.This state is shown in Figure 11. .In this state, operate air cylinder αQ again to reach rank (9).
8 protrude and open the claw (8>), tension coil spring α
In e, the hook holder of the product is assembled to the rabbit. After tightening, raise the air cylinder Q for spring loading work.
38, return the spacing between the fingers (4) to the initial state regulated by stopper α4, and move the spring-loading knife (1) to its initial position above the spring supply jig (g). return. After this twisting, the tension coil spring α0 is sequentially assembled.

By the way, in Figure @12, the claw (8) is a tension coil spring cm.
This figure 12 shows a case where a predetermined tension coil spring α0 is placed approximately in the center of the spring supplying jig αυ.
FIG. 12 tbl shows a case where the tension coil spring αQ, which has a shorter length because the number of turns of the coil portion is smaller than the predetermined value, is placed closer to the right side in the spring supply jig (c). When the claw (8) is closed in this state, it is clear from FIG. 71) that the claw (8) can grasp the boundary between the hook portion and the coil portion in the case of FIG. 12 (Al).

In the case of Fig. 12 [b], the claw (8) will sandwich the coil part from the center of the hook part.

[Problem that the invention seeks to solve]

The conventional device for performing spring hanging work is composed of the spring supplying jig αO and the spring hanging work hand (1) as described above.As shown in FIG. Due to variations in the number of turns in the coil part,
If the length is different or the position of the hook part of the tension coil spring α0 on the spring supply jig αυ changes, the claw (
8) was unable to grip the position that it should have gripped, and as a result not only did the holding state of the tension coil spring O0 become unstable, but it also frequently failed to insert it into the hook receiver αη. Therefore, it is necessary to repeat the series of spring hooking operations, or to carefully check the quality and aperture of the tension coil spring Oe, and then to place the spring again in the spring supply jig (g) and rub it for 5 times. 1. There was a problem in that the operator was forced to perform the inefficient work of tying.

This invention was made in order to solve the above-mentioned problems, and it can be used for spring hanging work even for coil springs with tight tension, where the length of the coil part varies slightly due to variations in the number of turns. The claws of the hook will sandwich the boundary between the coil part and the hook part, and the center of the hook group will be recreated in the specified position.
The purpose is to obtain a jig for supplying springs that is highly reliable in terms of being able to be bent.

[Means for solving problems]

The spring supply jig according to the present invention includes a pair of hook holders on which the hook portions of tension coil springs are horizontally placed, escape holes provided in the hook holders, and a pair of hook holders that are inserted into the hook portions. With a hook pin.

a rotation mechanism that performs the above-mentioned insertion operation of the hook pin;

A mechanism for moving the hook pedestal in the tensioning direction of the tension coil spring is provided.

[Effect]

In the spring supply jig of this invention, a pair of hook pins are inserted into the hook parts of a tension coil spring placed on a pair of hook holders, and then, while the hook pins remain inserted, the hook holder on the movable side is inserted. By sliding the coil portion on the base in the axial direction to a predetermined position, the boundary between the hook portion and the coil portion of the tension coil spring can be reproducibly positioned at the predetermined position.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. 1st
Figures 1 through 5 relate to a spring supplying jig according to an embodiment of the present invention. Figure 1 is a sectional view of the spring supplying jig, and Figure IJg2 is a plan view of the same spring supplying jig.

@Figure 3 is a front view when the hook pin is inserted into the hook part of the tension coil spring placed on the spring supply jig, and Figure 4 is a plan view showing the positional relationship between the spring supply jig and the tension coil spring. Figure @5 is a front view showing the positional relationship between the spring hooking work/sand and the spring supplying jig at the time of starting the animal. 8 in Figures 1 to 4, the spring supply jig opening is connected to the hook holder ■ fixed to the base 1G and the base α9.
And the spring holders are two kite shafts c2D fixed to the metal ring.
, a movable hook holder that is guided and slidably supported by the guide shaft 21, and an F-71J holder whose tip is attached to the hook holder and moves it in a straight line.

A pair of pins (to) for the above pair of hook holders ■ and ■
e A pair of member walls supported on the rotational axis, and a pair of pins/I2
A pair of pneumatic rotary actuators (E) for rotating the member (TO) through 4;
A pair of hook pedestals 1. It consists of a hook pin (support) that can be inserted into the relief hole O provided in (2). 11!5
In the figure C, the tension coil spring αQ is assembled to the above spring supply fern opening and north.The spring hanging work is uniform. A pair of fingers 3D fixed to the frame ■, a pair of claws (8) used in the conventional spring hanging work hand (1), and a pin (5) that forms the opening/closing mechanism for the claws (8).
, Hinion (6), Rank (9).

It consists of an air cylinder (g).

Next, the operation of the above embodiment according to the present invention will be explained. @ When the pair of hook holders ■, ■ and the pair of hook pins (supports) come to rest in the various states shown in Figures 1 and 2, the tension coil springs a, which have been separated one by one, are supplied, and the hook holders ■, ■ is placed on (supplying means not shown)
. After this, the pair of pneumatic opening width actuator rods are operated and rotated, and the pair of hook pins are moved into one member.
It rotates 180 degrees around the center axis of the pin (to) through the pin, and it comes to rest in the state shown in Figure w13, where it is inserted into the hook part of the tension coil spring σ0 and the relief holes 4 in the hook holders ■ and ■. Figure 4 of the whistle is a cross-sectional view showing the positional relationship between the hook pin (to) and the hook part of the tension coil spring αG.If the hook pin (to) was arranged in this way, the assembly would have failed in the past. This hook pin (
(support) can be reliably inserted into the hook part. Next, when the air cylinder is activated and the hook holder is retracted, the pair of hook pins (to) will spread to a predetermined distance, and at the same time the tension coil spring 0 will pull the inner periphery of the hook into the hook pin (to). ) and is stretched in the direction of tension of the tension coil spring. (@Figure 4 (shown in BL))Here, even if the hook pin (to) pushes out various tension coil springs with slightly different numbers of turns, the hook part will not deform much, so the hook pin (to) The boundary between the hook part and the coil part is determined by the distance between and the shape of the hook part.

Regardless of the length of the coil part and the position of the tension coil spring αQ in the hook holder (2) and (c2), it will come to the fixed position with good reproducibility. After this, the spring tensioning work ends (to) located at various positions as shown in Fig. 5 are lowered with the claws (8) open, and the claws (8) are closed to ensure that the springs are already stretched. After grasping the tension coil spring αO, the pneumatic rotary actuator @ is made to return the hook pin (support) to its initial state, allowing the hook portion to escape upward. The method of opening and closing the claw (8) at this time is exactly the same as the conventional method. Next, raise the spring hooking work hand (to), move it above the product in the predetermined assembly position, and then lower it to place the hook part of the tension coil spring 0O held onto the hook receiver αη of the product. Insert to the specified depth. After that, in the same manner as above, open the claw (8) and assemble the tension coil spring a0 to the hook holder αη of the product. Return to the top of the jig rotation.

In this way, the tension coil springs a. are sequentially assembled.

In the above embodiment, an example was shown in which the sliding movement of the hook holder ■ is guided by the two kite shafts Q, but the sliding movement of the hook holder ω and It is also possible to use a rug that can be slid on both sides.

〔Effect of the invention〕

As described above, according to the present invention, there is provided a pair of hook holders on which the hook portions of the tension coil springs are placed horizontally, an escape hole provided in the hook holders, and a pair of hooks inserted into the hook portions. Since it is equipped with a pin, a 6-rotation mechanism for the above-mentioned insertion operation of the hook pin, and a mechanism for moving the above-mentioned hook holder in the tension direction of the tension coil spring, the length of the coil portion of the coil spring changes somewhat due to variations in the number of turns, etc. Even when assembling various poor-quality springs, the boundary between the hook part and the coil part held by the spring hanging work hand is reproducibly positioned, and the center of the hook part or the coil part can be gripped securely without being pinched, so only one set is possible. It is possible to carry out spring-loading work with fewer mistakes, improve productivity when assembling @ products, and provide a spring-feeding jig that can supply low-cost products. be.

[Brief explanation of the drawing]

1! Figure 1 is a sectional view of a spring supply jig according to an embodiment of the present invention, and Figure 2 is a plan view of the jig shown in Figure 1. FIG. 3 is a front view showing a state in which a hook pin is inserted into the hook portion of the tension coil spring placed on the spring supply jig shown in FIG. 1 and FIG. 2, and FIG. 4(a). tbl is a plan view showing the positional relationship between the tension coil spring and the spring supply jig shown in Figures 1 and 2; A front view showing the positional relationship between the hand and the hand for spring hanging work, and Figure 6 is a front view of a conventional hand for spring hanging work.
Figure 7 is a side view of the main part of Figure 6, Figure @8 is a front view showing the positional relationship between the conventional spring hanging work hand and the conventional spring supply jig at the start of operation, and Figure @9 is the conventional Fig. 10 is a front view showing a state in which the conventional spring hanging work hand is lowered onto the spring feeding jig, and Fig. 11 shows the hook part. Fig. 12 is a front view showing the state in which the spring is inserted into the hook receiver, and Fig. 12 is a plan view showing the positional relationship between the conventional spring supply jig and the tension coil spring. In Figure 2, α0...Tension coil spring, αη...
Hook holder, ■... Spring supply jig, CIl, ■...
・Hook stand. (To)...Hook pin. Note that the same reference numerals in Figure 1 indicate the same or equivalent parts.

Claims (1)

[Claims] A device for performing a spring hanging operation in which the hook portion of a tension coil spring having hook portions at both ends is locked to a hook holder at a predetermined position, a pair of hook holders on which the hook portion of the tension coil spring is placed horizontally; A pair of hook pins that are inserted into the escape hole provided in the hook holder and the hook portion, a rotation mechanism that performs the insertion operation of the hook pin, and a mechanism that moves the hook holder in the direction in which the tension coil spring is pulled. A spring supply jig characterized by comprising: