JPH0633687U - Sucker - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a suction cup that can strongly and reliably perform adsorption. A wall surface forming the adsorption body 12 is formed of a hollow body, and a fluid can be injected into the hollow portion, and at least one of an inner edge portion and an outer edge portion of a lower end portion of the adsorption body 12 is formed. Further, a bellows 18 capable of expanding and contracting in the vertical direction is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a suction cup used when sucking an object.

[0002]

[Prior art]

 When an object is conveyed or transferred in an automated line, various object holding means such as an air tube chuck and a suction cup are used. In general, when holding the plate-shaped body, the upper surface thereof is suction-held by a suction cup. As shown in FIG. 11, the suction cup 1 is composed of a suction body 2 having a downward concave shape, and a connection port 3 for attaching a vacuuming hose that sucks the inside of the concave portion A. The suction cup 1 is integrally formed of rubber. There is. After connecting the vacuum suction hose extending from the vacuum pump to the connection port 3 of the suction cup 1, the suction cup 1 is brought into contact with the surface of the target object to be adsorbed 10 and the vacuum pump is operated. Since the air pressure in the recess A decreases and the pressure difference from the outside atmospheric pressure increases, the surface of the object to be adsorbed 10 is strongly attracted and adsorbed to the suction cup 1. In this state, the suction target 1 can be moved to a desired position by moving the suction cup 1 vertically or horizontally. The adsorption can be easily released by stopping the vacuum pump and opening the release valve provided in the vacuum hose.

[0003]

[Problems to be solved by the device]

 However, when the suction cup 1 is used, as shown in FIG. 12, when the surface of the object to be adsorbed 10 to be adsorbed is not a flat surface but a slightly distorted curved surface, the lower end edge portion 4 of the adsorbing body 2 is Is hard to follow the surface of the object to be adsorbed 10 and the two do not come into close contact with each other. For this reason, unless the suction force is considerably increased and the edge 4 is deformed and brought into close contact, the suction becomes insufficient, and even if the suction cup 1 tries to lift the suction target 10, the suction target 10 comes off or falls during movement. It is a problem.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a suction cup having good adhesion between the suction cup edge portion and an object to be attracted and excellent suction force.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the suction cup of the present invention is a suction cup provided with a downwardly concave suction body and suction means for vacuuming the inside of the recess of the suction body, and the wall surface forming the suction body. Is formed of a hollow body, and a supply means capable of supplying a fluid is communicated to the wall surface hollow portion, and at least one of an inner edge portion and an outer edge portion of the lower end portion of the adsorption body can be vertically expanded and contracted. It is composed of bellows.

[0006]

[Action]

 That is, in the suction cup of the present invention, the wall surface forming the adsorption body is formed of a hollow body, and the fluid can be supplied to the hollow portion, and the inner edge and the outer side of the lower end portion of the adsorption body are provided. A bellows that can be expanded and contracted in the vertical direction is provided on at least one of the edges. Therefore, when the inside of the concave part of the adsorption body is evacuated and at the same time the fluid is supplied to the hollow part and the lower end edge of the adsorption body is pressed downward and biased, the bellows expands and contracts appropriately along the surface of the object to be adsorbed. In close contact. Then, the close contact surface of the bellows is strongly pressed by the fluid inside the suction cup wall surface, and the close contact property is enhanced. In this state, if the vacuum in the recess of the suction cup is performed, the air pressure can be drastically reduced immediately without air entering from the outside into the recess. Therefore, the suction force of the suction cup with respect to the object to be adsorbed can be increased much more than before.

Next, this invention will be described in detail based on embodiments.

[0008]

【Example】

 FIG. 1 shows an embodiment of the present invention, and FIG. 2 is an enlarged view of a portion surrounded by a chain line P in FIG. In these drawings, reference numeral 12 is a downwardly concave suction main body, and a connection port 13 for attaching a vacuuming hose for sucking the inside A of the recess is provided at the top thereof. The connection port 13 is connected to a vacuum pump via a hose (not shown). The wall surface of the adsorption body 12 has a double structure including an inner wall surface 14 and an outer wall surface 15 made of rubber, and a hollow portion B is provided between the both. A fluid inlet 16 is formed at one location on the outer wall surface 15, and this portion is connected to an operation control valve and a compressor via a hose (not shown). The lower end portion of the inner wall surface 14 of the suction main body 12 is formed by a bellows 18 made of silicon rubber that can expand and contract in the vertical direction.

Therefore, using this suction cup 11, first, when compressed air is supplied to the hollow portion B and the lower end edge portion of the adsorption body 12 is pressed downward and urged, the bellows 18 is moved along the surface of the object to be adsorbed 30. It expands and contracts properly and adheres. Then, the close contact surface of the bellows 18 is strongly pressed by the compressed air in the hollow portion B, and the close contact property is enhanced. That is, as shown in FIG. 2, when the compressed air is not introduced into the hollow portion B, the bellows 18 moves such that the inner wall surface 14 side of the lower end surface 19 of the adsorption body 12 floats above the surface of the object to be adsorbed 30. Therefore, when compressed air is introduced from the fluid inlet 16, as shown in FIG. 3, the air pressure causes the floating portion of the lower end surface 19 to be pressed against the object to be adsorbed 30, so that the object to be sucked by the suction cup 11 is pressed. Adhesion to the suction object 30 is improved. In this state, if the inside of the recess A of the suction cup 11 is evacuated, the air pressure can be greatly reduced immediately without air entering the inside of the recess A from the outside. Therefore, the suction force of the suction cup 11 with respect to the object 30 to be adsorbed can be increased much more than before, and the object 30 to be adsorbed cannot be surely adsorbed due to the decrease in the suction force, which lowers the processing capacity of the entire system. Never.

In the above embodiment, as shown in FIG. 2, the lower end surface of the suction main body 12 is formed by another member, one end of the bellows 18 is attached to one side of this portion, and the other end is sucked. Although the whole body is attached to the inner wall surface 14 of the main body 12, the bellows 18 and the lower end surface 19 of the suction main body 12 may be integrally formed as shown in FIG. In this case, since it is only necessary to attach the integrally molded product to the lower end portion of the suction body 4, the mounting becomes easier. In addition, as for the material of this portion, the entire portion of the integrally formed bellows 18 and the lower end surface 19 is silicon rubber.

Further, in the above embodiment, the lower end surface 19 is slightly thicker than the bellows 18, but as shown in FIGS. 5 and 6, the bellows 18 and the lower end surface 19 are May have the same thickness. As described above, when the thickness of the lower end surface 19 is reduced, the followability to the suction surface is improved.

Further, the manner of attaching the bellows is not limited to this, and as shown in FIGS. 7 and 8, the bellows 18 may be attached to the lower end portion of the outer wall surface 15. Alternatively, as shown in FIGS. 9 and 10, the lower end portions of both wall surfaces 14 and 15 may be formed with bellows 18. By doing this, the followability to the suction surface is further improved.

Further, the material of the bellows 18 is preferably one that has good followability with respect to the suction surface and has good wear resistance. As such a material, silicon rubber is suitable as shown in the above embodiment.

Further, in the above embodiment, air is used as the fluid to be injected into the hollow portion B of the adsorption body 12, but any material such as water, oil or the like that applies a pressing force to the lower end surface 19 can be used. Can be used.

[0015]

[Effect of device]

 As described above, in the suction cup of the present invention, the wall surface forming the adsorption body is formed of a hollow body, and the fluid is supplied to the hollow portion, and the inner edge of the lower end portion of the adsorption body is At least one of the outer edge portion and the outer edge portion is provided with a Java bar that can expand and contract in the vertical direction. Therefore, when the inside of the concave part of the adsorption body is evacuated and at the same time, the fluid is supplied to the hollow part and the lower end edge of the adsorption body is pressed downward and urged, the bellows described above expands and contracts appropriately along the surface of the object to be adsorbed. And come into close contact. As a result, the inside of the suction cup concave portion can be immediately sucked, and the adsorption of the object to be adsorbed can be performed significantly stronger and more reliably than before.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional perspective view showing an embodiment of the present invention.

FIG. 2 is an enlarged view of a portion surrounded by P in FIG.

FIG. 3 is an operation explanatory diagram of the above embodiment.

FIG. 4 is a sectional view showing another embodiment of the present invention.

FIG. 5 is a sectional view of still another embodiment of the present invention.

FIG. 6 is an operation explanatory view of another embodiment of the present invention.

FIG. 7 is a sectional view of another embodiment of the present invention.

FIG. 8 is an operation explanatory diagram of another embodiment of the present invention.

FIG. 9 is a sectional view showing still another embodiment of the present invention.

FIG. 10 is an operation explanatory diagram of still another embodiment described above.

FIG. 11 is a partial cross-sectional view showing a conventional example.

FIG. 12 is an operation explanatory diagram of the above-mentioned conventional example.

[Explanation of symbols]

 11 Sucker 12 Adsorption Main Body 14 Inner Wall Surface 15 Outer Wall Surface 18 Bellows A Recess Inner Space B Hollow Part

Claims (1)

[Scope of utility model registration request] 1. A suction cup comprising a downwardly concave suction body and suction means for vacuuming the inside of the recess of the suction body, wherein a wall surface forming the suction body is formed of a hollow body.
Fluid supply means capable of supplying a fluid to the hollow wall portion is communicated, and at least one of an inner edge portion and an outer edge portion of the lower end portion of the adsorption body is formed of a bellows that can expand and contract in the vertical direction. Characteristic sucker.