JPH0128904Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial application field) The present invention relates to an improvement of a crimping machine.

(Prior Art) There are various methods for caulking the caulking portion of a workpiece, and therefore there are also various types of caulking machines. Among these, there is a type in which the workpiece is rotated and a roller is pressed against the caulking part. FIG. 3 shows the structure of this type of automatic crimping machine.

In FIG. 3, reference numeral 1 denotes a workpiece having a substantially dish-like shape, and a plurality of caulking portions (not shown) are provided inside the workpiece. A workpiece 1 is attached to a rotating base 2, and the rotating base 2 is connected to a sprocket 4 and a chain (or belt) by a motor 3.
5. It has a structure in which it rotates in the direction of the arrow via a sprocket 6 and a drive shaft 7.

On the other hand, above the workpiece 1, a roller 8 for caulking the caulking portion of the workpiece 1 is attached to a holder 9. The roller 8 is arranged 2 times in the circumferential direction of the holder 9.
The holder 9 is attached to a guide portion 12 fixed to a slide unit 11 via a shock-absorbing coil spring 10. The slide unit 11 is attached to the piston rod 14 of the cylinder 13, and is capable of sliding on the slide base 15 in the vertical direction indicated by the arrow.

That is, the roller 8 attached to the holder 9 descends when the workpiece 1 and rotating base 2 reach a certain rotational speed, and presses against the caulking portion of the workpiece 1, thereby performing a caulking action.

4 is a partially enlarged view showing the mounting structure of the roller 8. The roller 8 is attached to a shaft 17 via a bearing 16, and the shaft 17 is connected to support rods 18, 18 fixed to the holder 9. installed on.

(Problems to be Solved by the Invention) However, when the roller, which is a component that directly performs the caulking action, has the above-described structure, it has the following problems.

That is, if the width of the caulked part of the workpiece 1 is wide in the radial direction of the circumference, or if a plurality of caulked parts are arranged in the radial direction of the circumference, the outer pressing part of the roller 8 (as shown in FIG. The distances between the left side A side) and the inner pressing surface (right side B side in Fig. 4) from the axis of the holder 8 (or drive shaft 7) are different, resulting in a large circumferential speed difference. becomes. Nevertheless, since both of these contact surfaces are integrally formed, they try to rotate at the same circumferential speed.
Alternatively, large slippage or friction may occur between the workpiece 1 and the caulked portion. As a result, the effect of caulking was significantly reduced, and problems such as scratches and burrs on the workpiece 1 and undesirable deformation of the caulked portion occurred.

The present invention aims to provide a crimping machine that solves these problems.

(Means for Solving the Problem) As a means for solving the above-mentioned problem, the present invention provides a roller that is attached to a holder and that is attached to a rotation mechanism and presses against the caulking part of a rotating workpiece. The roller is divided into two directions, and each roller is provided with a pressing surface that rotates independently.

(Function) In this configuration, the pressing surfaces of the respective divided rollers can rotate at different circumferential speeds corresponding to the distances from the respective axes. Therefore, since the pressing surfaces of each roller rotate smoothly, scratches, burrs, undesirable deformation, etc. as described above do not occur, and a stable crimping action can be performed.

(Example) Hereinafter, an example of the present invention will be described based on the drawings. FIG. 1 shows an example of the roller structure of this crimping machine. The roller 8 is divided in the axial direction of the roller 8. The roller 8a has a pressing surface A, and the roller 8b has a pressing surface B. It consists of

The roller 8a is attached to the shaft 17 via a bearing 19, and the roller 8a is attached to the small diameter portion of the roller 8a via a bearing 20. 21 is a bearing.

The workpiece 1 is moved by the roller 8 configured as described above.
When caulking the caulking parts 1a and 1b, as shown in FIG.
are pressed against each other. At this time, the distance from the axis of the holder 8 is that the roller 8a is larger than the roller 8b, so the roller 8a rotates at a relatively higher speed.
The roller 8b will rotate at a lower speed.

That is, since the rotational speed of one of the rollers 8a and 8b is not affected by the rotational speed of the other, it is possible for each of the rollers 8a and 8b to rotate at the optimal peripheral speed corresponding to the distance from the axis of the holder 8. become. Therefore, the crimping action by the pressing surfaces A and B does not cause any slippage or friction with the workpiece 1 or the crimping parts 1a and 1b, so the crimping effect does not deteriorate, and the workpiece 1 This eliminates the occurrence of scraps, burrs, and undesirable deformation of the caulking parts 1a and 1b.

In addition, in this invention, as shown in Fig. 2,
It also includes an embodiment in which the rollers 8a and 8b are both attached to the shaft rod 17 in parallel, and furthermore
It also includes aspects of multiple division structures that are more than division.

(Effects of the invention) The invention is constructed as described above,
It becomes possible to perform a stable caulking action without causing defects such as scratches, burrs, or undesirable deformation on the workpiece or the caulking part.

In addition, conventionally, when the pressing surface of a roller was worn or scratched, the entire roller was replaced, but with the split structure, it is now possible to replace only the worn or scratched roller. Overall roller life is improved.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing a roller structure that is the main part of an embodiment of the present invention, and FIG. 2 is a sectional view showing a roller mechanism that is the main part of another embodiment from that shown in FIG.
FIG. 3 is a schematic diagram showing the overall configuration of a crimping machine, and FIG. 4 is a sectional view showing the roller structure of a conventional crimping machine. 1... Work, 1a, 1b... Caulking part, 2
...Rotating base, 8a, 8b...Roller, 9...
Holder, A, B...Press surface.

Claims (1)

[Scope of utility model registration request] A roller that is attached to a holder and presses against a caulked part of a rotating work that is attached to a rotation mechanism is divided in its axial direction, and each roller is provided with a press surface that rotates independently. Caulking machine.