JPS5856107Y2 - Holding device for circular articles - Google Patents

Description

[Detailed description of the invention] This invention relates to the improvement of a device for holding an annular article by using the cylindrical inner surface of the article.It is particularly suitable for holding relatively lightweight and small articles, has a simple structure, and is capable of holding articles. The presence or absence of retention can be detected.

Examples will be described below based on the drawings.

The embodiment shown in FIGS. 1 and 2 is applied to a tubular pin press-fitting device.

Reference numeral 1 denotes a press-fitting mechanism having a cylindrical rod 2 on the lower side, which is rotatably supported on a frame 3 by a cylinder 4.

This rod 2 is moved up and down by a press-fitting cylinder 5.

Reference numeral 6 indicates a shooter 17 for the tubular pin W, which is a cylinder block into which the tubular pin is press-fitted, and reference numeral 8 indicates a conveyance path for the cylinder block 7.

This rod 2 consists of a small diameter part 2a with a tapered lower end and a large diameter step part 2b at the upper part.This small diameter part 2a has a through hole 9, and one opening 9a has a smaller diameter than the other opening 9b. It is manufactured to prevent steel balls from falling out.

10 is a steel ball inserted into the opening 9a side, 11 is a rubber elastic member, and 12 is a plug, which is screwed into the threaded part of the through hole 7L9, so that the steel ball 10 partially protrudes from the opening 9a, and the elastic member 11 The position is adjusted so that it is pressed with a predetermined force.

13 is an air passage formed in the rod 2, and the plug 12
The opening 9b of the through hole 9 communicates with the passage 12a formed in the
It is opened on the side.

Air is supplied to this air passage from an air source (not shown) via a pressure detector.

Next, the operation of this embodiment will be explained.

First, the press-fitting mechanism 1 is swung by the cylinder 4, and the rod 2 is positioned as shown by the broken line.

Next, the rod 2 is moved downward by a slight stroke by the press-fitting cylinder 5, and its small diameter portion 2a is inserted into the inner surface of the inner cylinder of the tubular pin W.

At this time, the tubular pin W is urged by the steel ball 10, closes the opening 9b of the rod 2, and is held in the small diameter portion 2a of the rod 2.

By blocking the air passage 13 in this way, the pressure detector confirms that the tubular pin W is held.

Next, after moving the rod 2 upward, the press-fitting mechanism 1 is set to the state shown in FIG. 1 by the cylinder 4.

Thereafter, the rod 2 is lowered, and the tubular pin W is press-fitted into a hole (not shown) in the cylinder block 7, which has been previously set at a fixed position on the conveyance path 8, while being restricted by the stepped portion 2b.

Thereafter, when the rod 2 is moved upward, the tubular pin W is held by the cylinder block 7 and only the rod 2 is moved back, completing the press-fitting operation.

In this embodiment, air is released from the air passage 13 through the passage 12a of the plug 12 to the opening 9b, so when the tubular pin W is held, the steel ball 10 is pressed by air pressure in addition to force. can also be used to stabilize the holding force.

In addition, if the steel ball can be pressed with sufficient force, use rod 2.
The air passage 13 may be formed on the peripheral surface near the opening 9b,
Alternatively, the through hole may be formed in a bifurcated shape, and a steel ball may be placed in each of the forked portions.

Furthermore, the annular article is not limited to the cylindrical shape of the above embodiments, but only needs to have a cylindrical inner surface, and is not limited to the cylindrical shape of the embodiments described above; It doesn't matter what the external shape is.

As is clear from the above description, this invention has a simple structure, and the annular article can be held on the rod simply by the relative insertion movement between the annular article and the rod.
It is also possible to detect whether an article is being held by blocking this air passage.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention, and FIG. 1 is an overall explanatory diagram of one embodiment, and FIG. 2 is an enlarged sectional view of the main part of FIG. 1. 2... Rod, 9... Through hole, 9a, 9b... Opening, 10... Steel ball, 11... Elastic member, 12...
Plug, 13... Air passage, W... Tubular pin as annular article.

Claims (1)

[Scope of utility model registration request] A cylindrical rod that can be inserted into the cylindrical inner surface of an article, a through hole formed by penetrating the curved surface of the rod, and a steel ball arranged in a retaining structure on one opening side of the through hole. It consists of a plug set on the other opening side of this through hole via an elastic member and an air passage formed in the rod and opened near the other opening, and the steel ball presses the article against the rod and the article. 1. A holding device for an annular article, characterized in that the article can be held and detected by blocking an air passage.