JPH066337U - Vacuum pad - Google Patents

Abstract

(57) [Abstract] [Purpose] In the state in which plate-like bodies having through-holes in the central portion or in the vicinity of the central portion are stacked, only one sheet of the uppermost plate-like body is surely sucked up. An opening passage 6a for opening to the atmosphere is formed in the center of an end face 2 of a columnar main body 1, an annular groove 5 is provided on the outer periphery of the opening 6a, and a vacuum passage 4 communicating with a vacuum pump is provided in the annular groove 5. Opened.

Description

[Detailed description of the device]

[0001]

【Technical field】

 The present invention relates to a vacuum pad for vacuum-sucking an object, and more particularly to a vacuum pad for sucking a plate-shaped body having a through hole at its center.

[0002]

[Prior art]

 Moving an object by vacuum suction or moving it by vacuum suction on an object makes it possible to move with a soft touch without damaging the object. There are many applications in the transportation area, and it has also appeared in high-altitude operations such as window cleaning robots.

The vacuum suction is performed through a vacuum pad, and each of these vacuum pads has a plate-shaped suction plate, and a vacuum path is provided at the center of the suction plate.

FIG. 3 is a side sectional view showing a structure of a conventional vacuum pad. In the figure, 10 is a main body, 11 is a vacuum pump connection port, 12 is a vacuum passage, 13 is a suction plate, and 14 is a fastening ring. . The conventional vacuum pad shown in the figure has a hollow cone-shaped suction member made of a soft elastic material such as rubber that surrounds the vacuum passage 12 on the outer circumference of the main body 10 with the vacuum passage 12 opening on the axis of the connection port 11 connected to the vacuum pump. A plate 13 is provided and secured to the body 10 by a fastening ring 14.

The vacuum pad sucks an object to be sucked (not shown) in contact with the outer periphery of the suction plate 13 by a force based on the pressure difference between the inside of the suction plate 13 and the outside air. Since the soft elastic material makes contact and does not damage the object to be sucked, the suction force per area is as large as 1 kgf / cm ² , so a small and powerful suspension means can be obtained.

[0006] However, when used as a transporting means such as a coin with holes, which has the thin plates with holes stacked one by one from the upper part and is moved up, it is not always separated one by one. Not limited to this, sometimes it was possible to lift more than two. Especially when the plate thickness is thin, there was a problem that multiple sheets could be lifted without being separated.

[0007]

【Purpose】

 The present invention has been made in view of the above circumstances, and has been made with the object of providing a vacuum pad capable of sucking one sheet more reliably than the upper one among a large number of perforated thin plates stacked. It is a thing.

[0008]

【Constitution】

 In order to achieve the above object, the present invention provides a vacuum pad for sucking a plate-shaped body having a through hole in the center or in the vicinity of the center, wherein the suction surface is smaller than the plate-shaped body, and the suction surface is An atmosphere opening hole communicating with the through hole and an annular groove communicating with the vacuum passage are provided on the outer periphery of the atmosphere opening hole, which will be described based on an embodiment of the present invention.

FIGS. 1A and 1B are views for explaining the structure of the vacuum pad of the present invention, wherein FIG. 1A is a view taken along the line AA of FIG. b) is a view taken along the line BB of FIG. 1A, in which 1 is a main body, 2 is an end face, 3 is a vacuum pump connection port, 3a is a screw, 4 is a vacuum passage, 5 is an annular groove, 6 is an open path, and 6a is an open mouth.

In the figure, the main body 1 is a columnar body, and a vacuum pump connection port 3 is provided on the shaft at the upper end surface and is connected to a vacuum pump (not shown) by a screw 3a. A plurality of vacuum passages 4 that open to the end face 2 communicate with the vacuum pump connection port 3.

The vacuum passages 4 are arranged concentrically in parallel with the axis of the main body 1 and open in the end face 2. The opening is located in the groove of the annular groove 5 and the degree of vacuum in the annular groove 5 is uniform. Kept in.

At the center of the end surface 2, there is an opening 6a of an opening 6 which is not connected to the vacuum passage 4 and the annular passage 5 and is opened to the atmosphere. When the opening 6a is sucked by a suction operation, The position is opposite to the through hole of the plate-shaped body having the through hole at the center. The numbers of the vacuum passages 4 and the open passages 5 are not limited to the numbers shown in the drawing, and the annular groove communicating with the vacuum passage 4 by connecting the opening 6a opened to the atmosphere with the hole of the plate-like body. 5 is provided on the end face 2.

FIG. 2 is a view for explaining an embodiment of the vacuum pad of the present invention, in which 7 is a plate-like member, 7 a is a through hole, 8 is a pallet, and 9 is a recess. The parts having the same action as are given the same reference numerals.

The one shown in the figure is provided on the pallet 8 and the plate-like bodies 7 are stacked and placed in a recess 9 having a through hole penetrating the pallet 8. The plate-like bodies 7 are placed by a vacuum pad. The figure shows a state in which the sheets are sucked up one by one and moved to another place.

Since the plate-like bodies 7 stacked in the recess 9 have the same size and shape, they are in close contact with each other in reality, but they are shown in a separated state.

The plate-like bodies 7 are closely stacked in the recess 9, but there is a slight gap between the adjacent upper and lower plate-like bodies 7, and this gap is a through hole 7 a of the plate-like body 7. Through the open path 6 and the atmosphere in the direction of arrow P. As a result, atmospheric pressure acts between the uppermost plate 7 and the next plate 7.

On the other hand, the atmosphere is sucked in the direction of arrow V through the annular groove 5 provided on the outer periphery of the through hole 7a, and the degree of vacuum is increased, so that a pressure difference is generated between the lower surface of the plate-like body 7. The plate-like body 7 is sucked up, but at the initial stage of sucking up, atmospheric air flows into the lower surface and accelerates separation from the lower plate-like body 7.

According to the vacuum pad of the present invention, it is not the case that the through hole 7a of the plate-like body is opened on the axial center as shown in the drawing. For example, the plate-like body 7 is thin and lightweight and has a diameter smaller than that of the opening 6a. This is effective when a plurality of small through holes are provided on a large diameter.

This means that the through holes of the uppermost plate 7 and the lower plate are not necessarily in communication with each other, but the through holes of the uppermost plate 7 are exposed to the atmosphere through the open path 6. The atmosphere flows through the through hole of the uppermost plate 7 and separates by flowing into the plate 7 at the next stage.

[0020]

【effect】

 As is clear from the above description, according to the vacuum pad of the present invention, the plate-like body placed on the flat plate and having the through hole in the central portion or in the vicinity of the central portion is surely sucked up and further laminated. One plate can be reliably sucked up from the plate-like body, and it is not suitable for sucking up multiple plates at the same time as in the conventional case.It is particularly suitable for sucking up a lightweight plate-like body having a plurality of small through holes on a concentric circle. Yes Improves reliability in unmanned transportation.

[Brief description of drawings]

1A and 1B are views for explaining the structure of a vacuum pad of the present invention, in which FIG. 1A is a view taken along the line AA of FIG. 1B, and FIG.
FIG. 6B is a view taken along the line BB of FIG.

FIG. 2 is a view for explaining an embodiment of the vacuum pad of the present invention.

FIG. 3 is a side sectional view showing a structure of a conventional vacuum pad.

[Explanation of symbols]

 1 Main body 2 End face 3 Vacuum pump connection port 4 Vacuum path 5 Annular groove 6 Open path

Claims (1)

[Scope of utility model registration request] 1. A vacuum pad for sucking up a plate-shaped body having a through hole in the center or in the vicinity of the center, wherein the suction surface is smaller than the plate-shaped body, and the suction surface has an atmosphere opening hole communicating with the through hole. And a ring-shaped groove communicating with the vacuum passage on the outer periphery of the atmosphere opening hole.