JPH0535973Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is a vacuum pad that uses the vacuum of an ejector pump, etc. to suction and convey objects, and the suction surface is designed to reliably suction even on sloped surfaces. This invention relates to a swingable suction pad.

[Prior Art] For the suction surface of a suction pad, a flexible and elastic material such as plastic or rubber is used to ensure stable suction. Furthermore, it is common to have an integrated joint that holds the suction pad, fixes it to the conveyance means, and connects it to a vacuum pump or ejector pump. In this case, the suction pad is usually fixed to the suction surface, but since the article to be transported or held does not necessarily maintain a constant suction surface, some suction pads can swing freely.

The example shown in FIG. 2 is one example in which ball supports 2 and 3 are provided for a ball joint 1 to support the ball portion, and a suction pad is fitted to the lower part of one ball support 3.

Each ball support 2, 3 is fixed with a cap nut 4, and an O-ring 5 for vacuum sealing is attached.
is used.

Further, in the example shown in FIG. 3, the suction pad itself is partially bellows-shaped so that suction can be performed even on an inclined surface.

[Problem that the invention aims to solve] In the case of the conventional oscillating suction pad, the pad diameter is 10 mm.
For smaller diameters, it is difficult to incorporate the ball joint and O-ring inside the pad rubber.
I was dealing with it in other ways.

Recently, there has been a trend toward miniaturization of various types of devices, and equipment therefor has also shown a trend toward miniaturization, and moreover, accurate operation has become required.

However, as mentioned above, there is no suitable small oscillating pad, and in the structure using the O-ring shown in Figure 2, the suction surface and the fulcrum of the oscillation tend to separate, making the oscillation not smooth and the suction In the case of Fig. 3, there were manufacturing problems and problems in strength and durability.

[Means for Solving the Problems] The present invention has a ball joint as the suction pad portion, and the inner end of the support portion of the suction pad is brought into direct contact with the ball surface of the ball joint. The outside is supported by a ball support, and a support ring is fixed to the inner surface of the support part.

[Operation] According to the above means, since the inner surface of the support portion of the suction pad is in direct contact with the ball surface, swinging is performed at this portion. Furthermore, since the suction pad is made of flexible elastic rubber, its airtightness against vacuum is maintained through contact with the ball surface.
The support ring functions to prevent the ball joint from moving too far downward due to the support part of the suction pad expanding during suction, and to prevent it from coming off the ball support.

[Embodiment] FIG. 1 is a sectional view of a swing suction pad showing one embodiment of the present invention. The ball joint 10 has a connecting screw 12 with a fixture 11 formed in its upper part, and a ball portion 13 formed in its lower part. A passage 14 communicating with a vacuum pump or the like is formed inside for adsorption.
15 is its connection port.

The ball portion 13 is in contact with the inner surface end 18 of the support portion 17 of the suction pad 16 below the center position, and the ball support 19 is in contact with the ball portion 13 above the center position.
The inner surface tapered portions 20 of the two are fixed in contact with each other.

This fixation is achieved by fitting the convex portion formed on the ball support 19 with the groove portion 21 formed on the suction pad 16. In this state, a metal support ring 22 is further inserted, and the suction pad 16 is securely contacted. In the suction pad 16, the inner end 18 of the support part 17 is in direct contact with the ball surface, and since the suction pad 16 is made of rubber, it has excellent airtightness and performs a sealing effect during vacuum suction, allowing reliable suction. becomes.

[Effects of the invention] As described above, the structure of the present invention is simpler than the conventional one, and it is easy to manufacture small-diameter ones.Moreover, the suction surface of the suction pad and the center of the ball, which is the center of the swing, can be easily manufactured. Because it can be manufactured with the minimum dimensions, it eliminates the problems of conventional pads, such as the inability to securely suction unless the suction surface of the pad draws a large arc when swinging, causing the suction surface of the pad to shift significantly. Furthermore, it is easy to set a large swing angle, and the suction stability is achieved.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a suction pad showing one embodiment of the present invention, and FIGS. 2 and 3 show a conventional example. 10...Ball joint, 16...Adsorption pad, 17...Support part, 18...Inner surface end, 19...
...Ball support, 22...Support ring.

Claims (1)

[Scope of utility model registration request] This swivel suction pad is configured such that the pad portion of the vacuum suction pad, which communicates with the suction side of a vacuum pump and reduces the pressure inside the pad to suction an article, is made swivelable by a ball joint, the inner end of the support portion of the suction pad is brought into direct contact with the ball joint, the outside of the support portion is supported by a ball support, and a support ring is fixed to the inner surface.