JPH0341290B2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a spring-loading device that can reliably perform spring-loading work even on a tension coil spring whose hook surfaces at both ends are twisted and are not in the same plane. It is something.

[Prior art]

10 to 16 are drawings showing a conventional device for performing a spring hanging operation. 10 and 11 are cross-sectional views of the spring-loading hand 41, which includes a frame 42 and a pair of fingers 44 rotatably supported by the frame 42 and pin 43.
, a claw 45 fixed to the lower end of the fingers 44 for holding the tension coil spring 5 , a spring 46 hooked between the pair of fingers 44 and biasing the lower ends of the fingers 44 in a direction to close them, and an upper end of the frame 42 . is fixed to
and a cylinder 49 in which the rod 47 is formed to protrude into the frame 42 so that the rod 47 is constantly pushed up by a spring 48, and a pair of cylinders 49 that rotatably connect the lower end of the rod 47 and the upper end of the finger 44. The fingers 44 are opened and closed by the operation of the cylinder 49, and the tension coil spring 5 is held. At this time, the opening angle of the fingers 44 is the stopper 5.
2 to a predetermined angle. Further, a hole 51 for supplying and exhausting compressed air is formed at the upper end of the cylinder 49, and is connected to an air source via a hose and a direction switching valve (not shown).
Figure 12 shows the spring hanging work hand 4 at the start of operation.
1 and the spring supplying jig 11, the spring supplying jig 11 has a pair of hook holders 21 on which the hook part of the tension coil spring 5 is placed horizontally, and a pair of hook holders 21. a base 20 that slidably supports the coil portion of the tension coil spring 5 in the axial direction; a stopper 23 that is provided on the base 20 and restricts the distance between the pair of hook holders 21 from becoming narrower than a predetermined distance; For this reason, it is constructed with a pair of springs 22 that press the pair of hook holders 21 against the stoppers 23.

Next, the operation will be explained. In FIG. 12, on the hook holder 21 of the spring supply jig 11,
The tension coil springs 5, which are separated and supplied one by one, have their hook parts supported by the hook pedestal 21, and are held horizontally so that the hook parts are in contact with the hook pedestal 21 in the most stable state. Next, when the spring-loading work hand 41 is lowered by a moving means (not shown), the claw 45 fixed to the lower end of the finger 44 moves onto the hook holder 21 as shown in FIGS. 13 and 14. The tension coil spring 5 is inserted between the coil portions and the hook portions at both ends of the tension coil spring 5 held by the user. When compressed air is fed into the cylinder 49 in this state, the rod 47 is pushed up against the counter pressure of the spring 48, causing the finger 44 to rotate via the link 50. As a result, the finger 44 rotates the tension coil spring 5 with the claw 45 still engaged until it hits the stopper 52, causing the tension coil spring 5 to rotate.
While pulling and pushing, spread out the hook holder 21, and
As shown in FIG. 5, the tension coil spring 5 is held by the tensile force of the tension coil spring 5. Next, using the moving means, the spring hanging work hand 41 holding the tension coil spring 5 is raised, moved above the product 7 at a predetermined assembly position, and then lowered, as shown in FIG. Insert the hook portion of the tension coil spring 5 held by the user into the hook receiver 6 of the product 7 to a predetermined depth. When the compressed air supplied to the cylinder 49 is exhausted, the rod 47 is pushed up by the counter pressure of the spring 48 and rises. At the same time, the finger 44 is also rotated in the direction in which its tip is closed by the tensile force of the spring 46 and the tension coil spring 5, and the tension coil spring 5 is assembled into the hook receiver 6 of the product 7.
At this time, the hook receiver 6 of the product 7 is fitted into the hole 53 formed at the lower end of the finger 44. In this state, the spring hanging work hand 41 is moved by the moving means.
When raised, the tension coil spring 5 remains attached to the hook receiver 6 on the product 7, the finger 44 separates from the product 7, and the claw 45 also separates from the tension coil spring 5. As a result, fingers 44 are closed by the forces of springs 48 and 46. Next, the spring hanging work hand 41 is returned to the starting position by the moving means. In this way, the tension coil springs 5 can be sequentially assembled to the product 7.

Since the conventional spring hooking device is constructed and operates as described above, it is effective for normal tension coil springs whose hook surfaces at both ends are on the same plane, but There was a drawback that the hook surface was twisted and could not be applied to tension coil springs that were not on the same plane.

[Summary of the invention]

This invention was made with the aim of eliminating the above-mentioned drawbacks of the conventional hook, and includes a structure in which an enlarged part is formed in the claw of the spring-hanging work hand past the narrowed neck part to prevent rotation of the hook part. In addition to providing a groove, a hook holding mechanism is attached to the hook holder of the spring supplying jig to press the hook portions at both ends of the tension coil spring against the hook holder and to level the hook surface, thereby making it possible to hang the spring. To provide a spring-loading device that allows a working hand to securely hold a tension coil spring, and also to reliably perform spring-loading work on a tension coil spring whose hook surfaces at both ends are twisted and are not in the same plane. This is what I am trying to do.

[Embodiments of the invention]

1 to 9 show embodiments of the present invention, and FIG. 1 is a diagram showing the relative positions of the spring supply jig and the spring hanging work hand according to the present invention at the time of starting the operation. The spring supply jig 11 includes a pair of hook holders 21 on which the hook parts of the tension coil springs 5 are placed, and a base 20 that supports the hook holders 21 so as to be slidable in the axial direction of the coil part of the tension coil spring 5. , a stopper 23 that is provided on the base 20 and restricts the distance between the pair of hook holders 21 from becoming narrower than a predetermined distance; a pair of springs 22 that presses the pair of hook holders 21 against the stopper 23; The shaft 24 is attached to the hook holder 21 of the hook holder 21 and is horizontal and perpendicular to the sliding direction of the hook holder 21. The hook presser plate 25 is kept perpendicular to the horizontal plane of the hook holder 21 by means of the air cylinder 26, and the air cylinder 26 is fixed to the pair of hook holders 21. Presser plate 2
It consists of a rod 27 that can be rotated by pressing 5. Air cylinder 26 is connected to an air source via a hose and a directional valve (not shown). The spring hanging work hand 61 includes a pair of fingers 64 having claws 65 at the lower end, and a finger opening/closing mechanism that opens and closes the fingers 64 while keeping them in a parallel state.

Next, the operation will be explained. Hook holder 2 for spring supplying jig 11 separated in advance and one by one
When the hook portion is normal and not twisted, the tension coil spring 5 supplied onto the hook portion 1 is placed horizontally with the hook surface in the most stable state with the hook holder 21 as shown in FIG. However, in the case of a tension coil spring in which the hook portions at both ends are twisted as in this embodiment, the hook surface is placed diagonally with respect to the hook holder 21 as shown in FIG. When the air cylinder 26 is operated to push out the rod 27, the rod 27 rotates the hook presser plate 25 about the shaft 24, as shown in FIG. 3, so that the hook presser plate 25 becomes horizontal. Therefore, the hook pressing plate 25 presses the hook portion of the tension coil spring 5 against the hook holder 21, and the hook surface becomes horizontal. Then, when the spring-loading work hand 61 is lowered by a moving means (not shown), as shown in FIGS.
As shown in the figure, the claw 6 fixed to the lower end of the finger 64
5 is inserted between the coil portions and the hook portions at both ends of the tension coil spring 5 held by the spring supplying jig 11. Finger opening/closing mechanism 6 in this state
2 to open the fingers 64 to a predetermined distance. FIG. 6 shows this state, in which the finger 64 holds the tension coil spring 5 in the claw 65, and while pulling and pushing the tension coil spring 5, pushes and expands the gap between the hook holders 21, and the tensile force of the tension coil spring 5 is applied to the finger 64. This holds the tension coil spring. At this time, the claw 65
is a seventh part for preventing the hook part of the tension coil spring 5 from rotating around the axis of the coil part.
Since the hook part rotation prevention groove 60 as shown in the figure is provided, the shoulder of the hook part is inserted into the hook part rotation prevention groove 60 as shown in FIG. 8, and is stabilized. Next, the air cylinder 26 is operated to move the rod 27 backward, and the hook presser plate 25 is returned to its initial vertical position, and the spring hanging work hand 61 holding the tension coil spring 5 is raised by the moving means. After moving the product 7 above the predetermined assembly position, the product 7 is lowered and the hook portion of the tension coil spring 5 held therein is removed from the product 7 as shown in FIG.
Insert it into the hook receiver 6 to a predetermined depth. In this state, when the finger opening/closing mechanism 62 is operated to close the distance between the fingers 64 to a predetermined size, the tension coil spring 5 is assembled to the hook receiver 6 of the product 7. In this state, when the spring hanging work hand 61 is raised by the moving means, the tension coil spring 5 remains on the product 7 while being engaged with the hook receiver 6, and the finger 6
4 is separated from the product 7, and the claw 65 is also separated from the tension coil spring 5. Next, the finger opening/closing mechanism 62 is operated to return the spacing between the fingers 64 to the initial state, and at the same time, the moving means returns the spring-loading work hand to the initial position. In this way, the tension coil springs 5 can be sequentially assembled.

〔Effect of the invention〕

As explained above, in this invention, the claw of the spring-loading work hand is provided with a groove for preventing rotation of the hook portion, so that the tension coil spring can be held securely by the spring-loading work hand, and the spring supplying jig is
By installing a hook holding mechanism that horizontalizes the hook surface of a tension coil spring, it is possible to reliably perform spring loading work even on a tension coil spring whose hook surfaces at both ends are twisted and are not on the same horizontal plane. This has become something to look forward to.

[Brief explanation of drawings]

1 to 9 are views according to an embodiment of the present invention, and FIG. 1 is a front view and a sectional view showing the state of the spring supply jig and spring hanging work hand according to the present invention at the time of starting operation. , Figure 2 is a side view of the tension coil spring placed on the hook holder, Figure 3 is a side view showing the hook holding plate holding the hook horizontally, and Figure 4 is the side view of the tension coil spring placed on the hook holder. FIG. 5 is a side view showing the state in which the spring is inserted into the coil spring, FIG. 5 is a plan view of FIG. 7 is a side view showing the shape of the pawl, FIG. 8 is a plan view showing the state in which the tension coil spring is engaged with the pawl, and FIG. 9 is a front view showing the spring-loaded state. Figures 10 to 16
The figures show a conventional device for performing spring-loading work. Figure 12 is a front view and cross-sectional view of the spring hanging work hand and spring supply jig showing the state at the start of operation, Figure 13 is a plan view showing the claw being pulled and inserted into the coil spring, and Figure 14 is
The figure is a side view of Fig. 13, Fig. 15 is a front view and sectional view showing the holding state of the tension coil spring,
FIG. 6 is a front view showing the spring-loaded state. In the figure, 11 is a spring supply jig, 20 is a base,
21 is a hook holder, 22 is a spring, 23 is a stopper, 24 is a shaft, and 25 is a hook holding plate.
Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (1)

[Scope of Claims] 1. In a spring hooking device for locking the hook portion of a tension coil spring having hook portions at both ends to a hook receiver at a predetermined position, the device is mounted on a spring supplying jig. A hook part rotation prevention groove is provided in the claw of the spring hanging work hand for moving the placed tension coil spring to the hook holder, and a pair of hooks on which the hook part of the tension coil spring is placed. a pedestal; a base that supports the hook pedestal so as to be slidable in the axial direction of a coil portion of a tension coil spring placed on the pedestal; and a stopper provided at the center of the base. , the pair of hook holders of the spring supply jig comprising a spring for constantly pressing the pair of hook holders against the stopper are provided with a hook holding mechanism. A device for spring-loading work. 2. The spring hanging work device according to claim 1, wherein the hook portion rotation prevention groove has a structure in which an enlarged portion is formed past the narrowed neck portion. 3. The hook holding mechanism includes a horizontal shaft attached to each of the pair of hook holders in a direction perpendicular to the sliding direction of the hook holders, and a hook holding plate rotatably supported around the axis. and a rotation mechanism for rotating the hook presser plate. 2. The spring hanging work device according to claim 1, further comprising: a rotation mechanism for rotating the hook presser plate.