JPS63156629A - Spring feeding jig - Google Patents

Abstract

PURPOSE:To make sure of the holding of a coil spring varying in length, by erecting a hook pin on a receiving surface of a pair of hook receiving cradles where both hook parts of the coil spring are horizontally mounted each, and making one side of these cradles movable in a direction of pulling a spring. CONSTITUTION:In a base 19 of a spring feeding jig, there are provided with a pair of hook cradles 20 and 22, and both hook parts 16a of an expansion coil spring 16 are horizontally mounted each. Each hook pin 24 is erected on each hook receiving surface of these cradles 20 and 22. One side 20 of these cradles is locked to the base 19, and the other side cradle 22 is made shiftable in a tension direction of the expansion coil spring 16 by a core cylinder 23. Therefore, even to such an expansion coil spring as varying more or less in length of a coil part, a boundary part between the coil part and the hook part can be made constant, thus it is surely pinched by claws of a working hand.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention can be applied reliably to poor-quality tension coil springs in which the length of the coil part is not constant due to variations in the number of turns in the coil part of the tension coil spring. This relates to a spring supply jig necessary for spring hanging work.

[Conventional technology]

Figures 9 to 15 are, for example, Japanese Patent Application No. 60-257618.
FIG. 9 is a cross-sectional view of a spring-loading hand, FIG. 10 is a side view of the main part of FIG. 9, and FIG. The figure is a sectional view showing the positional relationship between the spring hooking work hand and the spring supply jig at the start of operation, and Figure 12 is the 10th with the claw open.
13 is a front view showing the state in which the spring hooking hand is lowered onto the spring supplying jig; FIG. 14 is a front view showing the state in which the hook part is inserted into the hook receiver;
FIG. 15 is a plan view showing the positional relationship between the spring supply jig and the tension fill spring. As shown in Figures 9 and 10, the spring hanging work hand (1) is guided by two guide shafts (3) fixed to the frame (2) and parallel by the guide shafts (■). A pair of fingers (Yumi) are slidably supported while maintaining the state, and a pair of bottles (■) are rotatably supported and coaxial with the bottle (5). A pair of pawls (8) having a pinion (0) and a hook part rotation prevention groove ('i) at one end, a pair of pinions (8) that are screwed together with the pinion (0) to move linearly and interlock, and a pair of pawls (8).
A rack (9) that opens and closes the scent, a pair of air cylinders (10) fixed to each of a pair of fingers (4) and that moves the rack (g) in a straight line, and a pair of air cylinders (10) that slide vertically on the lower end of the fingers (Φ). A rack (11) supported at one end and fixed at one end of each to the top of a pair of fingers (→);
A pinion (12) is screwed to the frame (2) and rotatably fixed to the frame (2), an air cylinder (13) is fixed to the frame (2) and opens and closes the finger (4), and a pinion (12) is fixed to the frame (2). and a pair of stoppers (14).

The operation of the conventional example as described above will be explained as follows. Figure 11 shows the spring hanging work hand (1
) and a spring supplying jig (15), the tension coil springs (16), which have been separated and supplied in advance, are placed on the spring supplying jig (15).

Here, as shown in FIG. 12, the air cylinder (10)
When the rack (9) is protruded and the spring hook work hand (1) is lowered with the claw (8) opened, the state shown in Fig. 13 will be obtained.After this, the air cylinder (10) is activated and the rack (9) is pulled back to its original position, the claw (marked) is closed, and the hook part rotation prevention groove ('7) provided in the claw (8) is pulled to hook the tension coil spring (16). Hold the tensioned coil spring (16) by holding the boundary between the part and the coil part.Next, raise the spring-loading work hand (1), operate the air cylinder (13), and tighten the distance between the fingers (→). is opened to a predetermined size regulated by a stopper (14), and for the predetermined assembly, move it to the position above the product and then lower it. This state in which the receiver (17) is inserted to a predetermined depth is shown in Fig. 14. In this state, the air cylinder (10) is operated again and the rack (ω
Push out and open the claw (8) to release the tension fill spring (1).
6) is assembled to the hook holder (17) of the product.

After that, the spring-loading work hand (1) is raised, the air cylinder (13) is activated, and the spacing between the fingers (4) is returned to the initial state regulated by the stopper (14), and the spring-loading work hand (1) is raised. 1) is returned to its initial position above the spring supply jig (15).In this way, the tension fill springs (16) are sequentially assembled.

By the way, in Fig. 15, the claw (8) is pulled by the tension coil spring (1).
6), of which Figure 15 (→ shows a case where a predetermined tension coil spring (16) is placed approximately in the center of the spring supply jig (15)). , FIG. 15(b) shows that the length of the tension fill spring (16) is shorter because the number of turns of the coil part (16b) is less than the predetermined number, and the tension fill spring (16) is placed closer to the right side in the spring supply jig (15). In this state, when the claw (mark) is closed, as is clear from this figure, in the case of -, the claw (the ladle is the hook part (16a) and the coil part (16b)
In contrast, in the case of FIG. 15(b), the claw (8) pinches the center of the hook part (16Δ) and the fill part (16b).

[Problem that the invention seeks to solve]

The conventional device for performing spring hanging work includes the spring supplying jig (15) and the spring hanging work hand (15) as described above.
), as shown in Fig. 15(b), the length of the coil part (16b) of the tension coil spring (16) may vary due to variations in the number of turns, etc., or the coil part (16b) of the tension coil spring (16) may be The hook part of the tension coil spring (16) (
If the position of the hook (lea) changes, the claw (8) will not be able to grip the position that it should be gripping, and this will not only make the holding state of the tension coil spring (16) unstable, but also cause the hook receiver (17) to become unstable. I often failed to insert it into the . Therefore, it is necessary to repeat the series of spring hanging operations, strictly control the quality of the tension fill spring (16), and then reposition it within the spring supply jig (15), resulting in poor work efficiency. There was a problem in that the user was forced to work with springs.

This invention was made in order to solve the above-mentioned problems, and even for tension coil springs in which the length of the coil part varies slightly due to variations in the number of turns, etc., the claw of the spring-hanging work hand can be attached to the fill part. To provide a spring supplying jig which enables highly reliable spring hanging work in that the boundary between a hook part and a hook part is reliably pinched and the center of the hook part can be reproducibly positioned at a predetermined position.

[Means for solving problems]

The spring supply jig according to the present invention includes a pair of hook holders on which both hook parts of a tension fill spring are placed substantially horizontally, and a spring supply jig that is erected perpendicularly to the receiving surface of the hook holders and near the center of the hook parts. A mechanism for moving the hook holder in the direction in which the tension fill spring is pulled is provided.

[Effect]

In the spring supply jig according to the present invention, when the hook part of the tension coil spring is placed on the hook holder, the hook pin is inserted into the hook part, so in this state, the hook holder is pulled to tension the coil spring. By moving in this direction, the boundary between the hook portion and the coil portion of the tension coil spring can be positioned with good reproducibility.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 1 to 7. Figure 1 is a plan view, Figure 2 is the line ■-H in Figure 1.
3 is a sectional view taken along the line In-Ill in FIG. 1, FIG. 4 is the same sectional view as FIG. 3 showing the tension coil spring mounted, and FIG. Main part plan, No. 6
FIG. 7 is a plan view showing the positional relationship between the spring supplying jig and the tension fill spring, and FIG. 7 is a front view showing the positional relationship between the spring hanging work hand and the spring supplying jig at the start of operation. In Figures 1 to 3, a spring supply jig (18
) is a hook cradle (20) fixed to the base (19).
, two guide shafts (21) fixed to the pace (19) and the hook holder (20), and a movable hook holder (
22), an air cylinder (23) whose tip is attached to the hook pedestal (22) and causes it to move in a straight line, and a pair of hook pedestals (20).

(22) A pair of hanging bottles (
24).

In FIG. 7, the spring-hanging work hand (25) that assembles the tension coil spring (16) together with the spring supply jig (18) is attached to the frame (26) and the hook receiver (
A pair of fingers (27) fixed to the frame (26) at a predetermined interval so that they can be directly inserted into the spring hook (17), and a pair of claws (27) used in the conventional spring-loading work hand (1).
8), this claw (mark) is made up of a bin (S1 binion (0), a rack (9), and an air cylinder (10)) that form the opening/closing mechanism.

Next, the operation will be explained. In the spring supply jig (18) in the state shown in FIGS. 1 to 3, tension coil springs (16) separated one by one are supplied in advance,
When placed on the hook pedestal (20) t (22), the fourth
As shown in FIG. 5, the hook pin (24) is inserted into the hook portion (16a) of the tension coil spring (16) (the supply means is not shown). By arranging the hook bottle (24) as shown in Figures 4 and 5'', the hook can be easily attached to a poor-quality spring that has conventionally failed to be assembled, as shown in Figure 15 (b). Securely attach the bottle (24) to the hook part (
16a). Next, by operating the air cylinder (23) and moving the hook pedestal (22) in the direction of tension of the tension fill spring (16), as shown in FIG.
As shown in FIG. 7, the pair of hook pins (24) are spread out at a predetermined interval, and at the same time, the tension coil spring (16) is hooked by the hook pin (24) on the inner periphery of its hook portion (16a). It is stretched in the tension direction of the tension fill spring (16). Here, even if the hook bottle (24) pushes apart a tension fill spring with a slightly different number of turns, the hook part (lea) will not deform much, so the interval between the hook bottles (24) and the hook part (16a
) is determined by the shape of Therefore, the hook part (16a)
The boundary between the coil part (18b) and the coil part (18b)
) and the position of the tension coil spring (16) within the hook cradle (20), (22), it will reproducibly come into place. After this, the spring hook work hand (25) in the position shown in Fig. 7 descends with the claw (8) open, and closes the claw (8) to release the already stretched hook. Hold the coil spring (16).

The method of opening and closing the claw (8) at this time is exactly the same as the conventional method.

Next, the spring hooking work hand (25) is raised, moved above the product in the predetermined assembly position, and then lowered, and the hook portion (16a) of the tension coil spring (16) held is attached to the product. Insert it into the hook receptacle (17) to a predetermined depth. After that, in the same manner as above, open the claw (8) and assemble the tension coil spring (16) to the hook receiver (17) of the product, then raise the spring-loading work hand (25) again and start Return it to the position above the spring supply jig (18).

In this way, the tension coil springs (16) are sequentially assembled.

In addition, FIG. 8 shows a spring supply jig (18) according to the present invention.
This is a diagram showing another embodiment of the present invention, in which a pair of hook bins (24) are slidably moved in and out of the receiving surfaces of the hook holders (20) and (22). In the figure, (28) is a pair of hook holders (20), (
A pair of air cylinders (29) are fixed to hook holders (20) and (22), and a pair of hook bins (29) are fixed to hook holders (20) and (22).
4) is an escape hole provided so that it can slide. By operating this air cylinder (28), a pair of hook bottles (24) attached to the ends of the rod can slide within the escape hole (29). In the embodiment shown in FIG. 8, the tension coil spring (16) is connected to the hook cradle (2).
0) and (22), the hook bottle (24) can be inserted into the relief hole (29), which has the effect of making it easier to place the tension fill spring (16).

In addition, in the embodiment shown in FIG. 8, a pair of ! [Hanging bottle (
24) is configured to be moved independently by a pair of air cylinders (28), but the hook bottle (24) may be moved by a mechanism other than this.

In addition, in each of the above embodiments, an example was shown in which the sliding movement of the hook pedestal (22) was guided by two guides # (21).
It is also possible to guide by another guide mechanism, or to make both the pair of hook holders (20) and (22) slidable.

〔Effect of the invention〕

As described above, according to the present invention, even when assembling a tension coil spring in which the length of the coil part varies slightly due to variations in the number of turns, etc., the hook part held by the spring hanging work hand and the coil Since the boundary between the hook and the hook can be positioned with good reproducibility, the spring-loading hand can securely grip the center of the hook or the coil without pinching the hook, making it possible to assemble the spring with fewer mistakes. . In addition, the action of stretching the tension fill spring to a predetermined length and the opening/closing action of grasping and releasing are performed separately by the spring supply jig and the spring hanging work hand, so the spring hanging work hand can be used separately. The structure is simplified, and each mechanical part can be easily assembled, adjusted, and maintained. From the above points, productivity is improved when assembling products, and this has the effect of supplying low-cost products.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an embodiment of the present invention, FIG. 2 is a sectional view taken along line 1--2 in FIG. 1, and FIG. 3 is a sectional view taken along line 1ll-- in FIG.
Figure 4 is the same cross-sectional view as Figure 3 showing the state in which the tension coil spring is placed, Figure 5 is a plan view of the main part of Figure 4, Figure 6 is the spring supply jig and tension FIG. 7 is a plan view showing the positional relationship with the coil spring, FIG. 7 is a front view showing the positional relationship between the spring hanging work hand and the spring supplying jig at the start of operation, and FIG. 8 shows another embodiment of the present invention. Cross-sectional view, FIG. 9 is a cross-sectional view of a conventional spring hanging work hand. Figure 10 is a side view of the main parts of Figure 9, and Figure 11 is the position of the spring hanging work hand and spring supply jig at the start of operation.
Figure 12 is a cross-sectional view showing part h, and Figure 12 shows part 10 with the claws surrounded.
13 is a front view showing the state in which the spring hooking hand is lowered onto the spring supplying jig; FIG. 14 is a front view showing the state in which the hook part is inserted into the hook receiver;
FIG. 15 is a plan view showing the positional relationship between the spring supply jig and the tension coil spring. In the figure, (16) is a tension coil spring, (lea)
is the hook part, (17) is the hook holder, (18) is the spring supply jig, (20) and (22) are the hook holders, (24)
is σ [hanging pin, (23) is a moving mechanism, and (28) is a mechanism for moving in and out.0 Note that the same reference numerals in the figures indicate the same or corresponding parts. Agent Patent Attorney Masuo Oiwa Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 15 (a) Procedure amendment Written (self-motivated) Showa year/month Date of the Chief Licensing Agency 2 Name of the invention Spring supply jig 3 Person making the amendment Representative Moriya Shiki 4 Agent 5 Subject of the amendment Claims of the clear sleeve letter Column Detailed Description of the Invention in the Specification Column 6, Contents of Amendment (1) The scope of claims in the specification is corrected as shown in the attached sheet. (2) In the 4th line of page 11 of the specification, "there will be no deformation" should be changed to "there will be no deformation." Therefore, it is corrected to J. (3) On page 11, lines 5 and 6, "determined by the shape. Therefore" is corrected to "determined by the shape." Claims (1) In 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 receiver at a predetermined position, both hook portions of the tension coil spring are attached. A pair of hook holders placed almost horizontally, a pair of hook bins erected perpendicularly to the receiving surface of the hook holders and near the center of the hook part, and the hook placed in the tension direction of the tension coil spring. A spring supply jig characterized by comprising a mechanism for moving a cradle. (2) The spring supplying jig according to claim 1, which includes a mechanism for moving the hanging bottle into and out of the receiving surface.

Claims (2)

[Claims] (1) In a device that performs a spring hanging operation in which the hook portions of a tension coil spring having hook portions at both ends are locked to hook holders at predetermined positions, both hook portions of the tension coil spring are placed approximately horizontally. A pair of hook pedestals, a pair of hook pins erected perpendicularly to the receiving surface of the hook pedestals and near the center of the hook portion, and a mechanism for moving the hook pedestals in a direction that pulls the tension coil spring. A spring supply jig characterized by: (2) The spring supply jig according to claim 1, comprising a mechanism for moving the hook pin into and out of the receiving surface.