JPS6144613B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a clip press-fitting machine.

Generally, a clip (a partially cut-out circular retaining ring) is press-fitted onto a press-fitted shaft by manually fitting it into a clip groove using a snap handle or the like. For this reason, work is extremely inefficient,
Take the trouble.

Therefore, in order to solve the above-mentioned drawbacks, the present invention has developed a clip press-fitting machine that can automatically press-fit a clip onto a shaft to be press-fitted. The following is a description of the specific embodiment shown in FIG. 3.

As shown in the drawings, the clip press-fitting machine according to the present invention includes a machine base A, a slide means B, a clip expansion press-fitting member C, a clamping means D for the clip expansion press-fitting member, a clip holding means E, and a clip fixing means F. ,
The main components are a clip press-fitting means G, other attached means H, and a clip I. The machine base A consists of a main body 1 and front and rear flanges 1a and 1b. The slide means B is installed in the flange portion 1a at the front of the machine base A, and is configured to be able to move the slide plate 2 back and forth along the clip press-fitting direction via a pair of guide members 3. ing.
The clip expansion press-fitting member C has a rear portion 4a that is reduced in diameter into a truncated conical shape toward the clip, and a front portion 4a that is tapered in diameter toward the clip.
b consists of a bullet-shaped hollow member 4 which is cylindrical and has approximately the same outer diameter as the press-fit shaft J toward the press-fit shaft J. The clamping means D of the clip expansion press-fitting member is located on the slide plate 2 mentioned above and is attached to the shafts 6, 6.
It consists of a pair of opposing clamping members 5, 5 arranged so that they can open forward in the direction of the clip press-fitting like a door when the clip is press-fitted, and a spring 7 pulls the clamping members 5, 5 together. , the clip expansion press-fitting member C is held between V-grooves 5a, 5a provided in the center thereof, apart from the slide plate 2 described above. Further, the opposing holding members 5, 5 are provided with notches 5a, 5b at their rear portions so as not to interfere with the press-fitting operation of the clip. The notches 5b, 5b are not limited to the L-shape, and may be cut out in an inclined shape as shown in FIG. The clip holding means E is also a slide plate 2.
A pair of holding members 8 are provided at the top and have notches 8a, 8a for positioning and holding the clip, and can open like a door toward the front in the direction of press-fitting the clip, centering on the shafts 9, 9 when the clip is press-fitted. , 8. The clip distribution means F is located directly above the clip holding means E, and is comprised of a clip supply device 10 such as a chute, a clip distribution device 11, and a clip passage confirmation device 12 consisting of a proximity switch 12a and a lever 12b. The clip press-fitting means G consists of a push tube 13 and a cylinder 14 whose inner diameter is slightly larger than the outer diameter of the cylindrical front portion 4b of the clip expansion press-fit member C and the outer diameter of the press-fitted shaft J. is equipped with an air inlet 13a communicating with a pipe 16 for supplying compressed air. As other attached means H, means necessary for the work, such as the micro switch 17 for confirming the forward and backward movement of the slide plate 2 mentioned above, are appropriately arranged. Each of these means, except for the clip fixing means F, is arranged in a straight line. Note that the press-fitted shaft J has a clip groove 18a provided at the end of the shaft 18.

In the above configuration, operations are performed in the following order. That is, when the press-fitted shaft J is positioned at a predetermined working position, the slide means B on the machine base A moves forward, the slide plate 2 moves forward, and the clamping means D presses the clamping means D onto the slide plate 2. The end surface of the cylindrical front portion 4b of the clip expansion press-fitting member C held between the clip expansion press-fitting member C is concentrically abutted against the shaft end of the press-fitting shaft J. During this time, the clip I is positioned in the notches 8a, 8a of the clip holding means E by the clip positioning means F. The push tube 13 of the clip press-fitting means G moves forward to push the clip I placed at a predetermined position in the manner described above toward the truncated conical rear part 4a of the clip expansion press-fitting member C. At this time, the clip holding means E is pushed open like a door, and the clip I is released from its restraint and moves onto the clip expansion press-fitting member C. Then, the clip I is moved directly onto the clip expansion press-fitting member C onto the push tube 1 of the clip press-fitting means G.
3, it is expanded to a diameter that can be inserted into the press-fitted shaft J, transferred to the shaft J, and the clip groove 1
8a. After the work, the push tube 13 is moved back, but at this time, air is blown into the push tube 13, and the clip expansion press-fit member C inside the push tube 13 is kept pressed against the end surface of the press-fit shaft J in order to be ejected. In this state, the press-fitting member is moved back and the clip is expanded again.
It is clamped by the clamping means D in an oppressive manner.

As explained above, the present invention is made of an elastic material, and expands a cut-off circular clip whose inner diameter in its natural state is slightly smaller than the outer diameter of the press-fitted shaft and pushes it out in the axial direction of the press-fitted shaft. , a clip expansion press-fitting machine for press-fitting into the shaft end of the clip, the clip expansion press-fitting member having a cylindrical front end having approximately the same outer diameter as the shaft to be press-fitted and a conical rear end; and the clip expansion press-fitting member. The cylindrical end of the clip is arranged so that it can concentrically abut against the shaft end of the press-fitted shaft, and is always biased in the closing direction by a spring so that the outer periphery of the cylindrical end is moved along the clip press-fitting direction. A pair of clamping surfaces that open on both sides hold the clip from both sides, and when the clip is press-fitted, the clip itself moves in the press-fitting direction, and is rotatably supported on both sides of the front of the clip in the press-fitting direction against the spring. The clamping member and the clips supplied one by one are held from both sides in a state on the front side in the clip press-fitting direction, facing the conical end of the clip expansion press-fitting member concentrically, and when the clips are press-fitted. , a pair of clip holding members which are rotatably opened on both sides of the front in the press-fitting direction of the clip and deliver the clip to the clip expansion press-fitting member; The clip has a diameter slightly larger than the outer diameter of the clip, and is arranged at a position on the front side of the clip holding member in the clip press-fitting direction, and the clip held by the clip holding member is directed toward the clip expansion press-fitting member and the press-fitted shaft. Since the clip is configured with a pusher tube that moves forward while maintaining a concentric state and moves backwards, the pusher tube moves back and forth in a straight line to automatically press-fit the clip. That is, by setting the rotation direction of the pair of clamping members that clamp the clip expansion press-fitting member to both sides of the front in the press-fitting direction of the clip, the above-mentioned 1. The pair of clamping members can be opened, which not only has the advantage of not requiring a separate release means, but also eliminates the need for complicated mechanisms and delicate adjustment work to prevent shifts in opening/closing timing. There is no fear of troubles such as damage caused by misalignment, and the structure can be significantly simplified, which is an excellent advantage. In addition, since the pair of clip holding members are rotatably opened on both sides of the front in the press-fitting direction of the clip, not only is there an advantage that the forward motion of the push tube can be used for the opening operation, but in particular, the pair of clip holding members can be supplied one by one. The clip can be carried out toward the clip expansion press-fitting member at the front in the press-fitting direction while being held from both sides, and the clip can be reliably transferred to the clip expansion press-fitting member, eliminating the need for a sliding guide member. , the structure can be significantly simplified since it is only necessary to pivotally connect it with a pin.

[Brief explanation of the drawing]

Fig. 1 is an overall view showing the external three-dimensional shape of the clip press-fitting machine according to the present invention, Fig. 2 is an enlarged view of the main parts thereof, and Fig. 3 is an explanatory diagram showing the main parts enlarged and exploded. . A... Machine base, B... Slide means, C... Clip expansion press-fitting member, D... Holding means for the clip expansion press-fitting member, E... Clip holding means, F... Clip positioning means, G... Clip press-fitting means, I... Clipp, J…
Press fit shaft.

Claims (1)

[Claims] 1 A clip that is made of an elastic material and that is press-fitted into the shaft end by expanding the clip, which has an occluded circular shape and whose inner diameter in its natural state is slightly smaller than the outer diameter of the press-fitted shaft, and pushing it out in the axial direction of the press-fitted shaft. The press-fitting machine includes a clip expansion press-fitting member whose tip end has a cylindrical shape with approximately the same outer diameter as the shaft to be press-fitted and whose rear end has a conical shape, and a cylindrical end of the clip expansion press-fitting member which is press-fitted. A clamping surface is arranged so as to be able to abut concentrically on the shaft end of the shaft, and is always biased in the closing direction by a spring to open the outer periphery of the cylindrical end on both sides along the clip press-fitting direction. a pair of clamping members supported rotatably on both sides of the front of the clip in the press-fitting direction against the spring by the clip itself that moves in the press-fitting direction when the clip is press-fitted; The clip to be inserted is held from both sides in a state in which it is concentrically opposed to the conical end of the clip expansion press-fitting member at a position on the front side in the clip press-fitting direction, and when the clip is press-fitted, the clip is held on both sides in front of the clip in the press-fitting direction. A pair of clip holding members that rotate to open and deliver the clip to the clip expansion press-fitting member, and an inner diameter slightly larger than the outer diameter of the cylindrical part of the clip expansion press-fitting member and the outer diameter of the press-fitted shaft. is placed at a position on the front side of the clip holding member in the clip press-fitting direction, and moves the clip held by the clip holding member toward the clip expansion press-fitting member and the press-fitted shaft while maintaining a concentric state. This clip press-fitting machine is characterized by being configured with a push tube that extrudes and press-fits while pressing, and then retreats after press-fitting.