Vacuum chuck for grabbing liquid crystal panel

Abstract

The utility model discloses a vacuum chuck for grabbing a liquid crystal panel, which comprises a chuck body, an air delivery pipe is arranged on the chuck body, the vacuum chuck further comprises an external air pipe connecting piece, an internal connecting air pipe piece capable of being connected with the external air pipe connecting piece is arranged in the air delivery pipe, an outer sealing sleeve is sleeved outside the air delivery pipe, and an inner sealing sleeve is sleeved outside the outer sealing sleeve. A threaded connection structure is arranged between the internal air pipe connecting piece and the external air pipe connecting piece, an upper sealing pressing structure is arranged between the outer sealing sleeve and the external air pipe connecting piece, the suction cup body is made of hydrogenated butadiene-acrylonitrile rubber, and lantern rings are arranged inside and outside the suction cup and wrap an air conveying pipe. The sucker and the sucker rod are further sealed, the connecting stability is improved while the sealing performance is improved, the service life is prolonged, meanwhile, the BR butadiene rubber material is replaced with HNBR hydrogenated nitrile rubber, the service life is further prolonged, and the use strength is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to liquid crystal panel grabbing sucking disc, especially a kind of vacuum sucking disc for liquid crystal panel grabbing. BACKGROUND

[0002] The existing sucking disc connecting part is weak in strength, and the sucking disc and the rod are easy to fall off, and the service life is reduced after long time use, and the sealing performance is poor, and the strength of the existing BR butadiene rubber is lower than that of HNBR hydrogenated nitrile rubber, therefore, a sucking disc structure solving the above problems needs to be designed.

[0003] Therefore, the existing liquid crystal panel grabbing sucking disc needs to be further improved. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a kind of vacuum sucking disc for liquid crystal panel grabbing, can improve the connection strength and sealing performance between sucking disc and sucking disc rod, and simultaneously adopt HNBR hydrogenated nitrile rubber, which is higher in strength and longer in service life.

[0005] In order to achieve the above purpose, the utility model adopts the following scheme:

[0006] A kind of vacuum sucking disc for liquid crystal panel grabbing, including sucking disc body, the sucking disc body is provided with gas pipe, further including external gas pipe connecting piece, the internal connecting gas pipe piece that can be connected with the external gas pipe connecting piece is installed in the gas pipe, the gas pipe is equipped with the outer sealing sleeve for external sealing, screw thread connection structure is arranged between the internal connecting gas pipe piece and the external gas pipe connecting piece, upper sealing compression structure is arranged between the outer sealing sleeve and the external gas pipe connecting piece, the sucking disc body is made of hydrogenated nitrile rubber.

[0007] Further, the sucking disc body is provided with a limiting structure for limiting the movement distance of the internal connecting gas pipe piece.

[0008] Further, the limiting structure includes a ring-shaped limiting groove provided in the top wall of the sucking disc body, and the lower end edge of the gas pipe is provided with a limiting convex ring that can cooperate with the ring-shaped limiting groove.

[0009] Further, the outer sealing sleeve includes a sleeve body, and the lower end of the sleeve body is provided with a compression bottom ring, and the compression bottom ring and the limiting convex ring respectively compress the inner and outer surfaces of the sucking disc body for sealing.

[0010] Further, the screw thread connection structure includes an internal thread provided in the inner wall of the internal connecting gas pipe piece, and the circumferential outer wall of the external gas pipe connecting piece is provided with an external thread, the external gas pipe connecting piece is inserted into the internal connecting gas pipe piece, and the internal thread and the external thread are screw-connected.

[0011] Furthermore, the upper sealing and clamping structure includes a sealing ring mounting groove arranged at the upper end of the sleeve body, a sealing ring is installed in the sealing ring mounting groove, and a sealing ring clamping ring is provided on the circumferential outer wall of the external air pipe connector, and the sealing ring clamping ring is clamped on the sealing ring.

[0012] In summary, the present invention has the following beneficial effects compared to the prior art:

[0013] The utility model solves the shortcomings of the existing liquid crystal panel grabbing suction cup. Through the structural setting of the utility model, it has the following advantages: a ring is provided inside and outside the suction cup to wrap around the air pipe, further sealing the suction cup and the suction cup rod, improving the sealing performance while improving the connection stability and service life. At the same time, the BR butadiene rubber material is replaced by HNBR hydrogenated nitrile rubber, further improving the service life and use strength, and the structure is simple and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0016] Figure 3 This is an exploded view of the present invention. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] See also Figure 1-3 The utility model provides a vacuum suction cup for grasping liquid crystal panels, comprising a suction cup body 1, an air pipe 2 is provided on the suction cup body 1, and an external air pipe connector 3 is also provided. An internal connecting air pipe part 4 that can be connected to the external air pipe connector 3 is installed in the air pipe 2, an outer sleeve 5 for external sealing is provided on the air pipe 2, a threaded connection structure 6 is provided between the internal connecting air pipe part 4 and the external air pipe connector 3, an upper sealing and pressing structure 7 is provided between the external sealing sleeve 5 and the external air pipe connector 3, and the suction cup body 1 is made of hydrogenated nitrile rubber;

[0019] The gas pipe 2 is extended upward;

[0020] The internal air pipe connection member 4 is installed inside the air pipe 2, and the external sealing sleeve 5 is installed outside the air pipe 2. The external air pipe connection member 3 is used to press the external sealing sleeve 5 tightly against the upper surface of the suction cup body 1.

[0021] When the external air pipe connector 3 and the internal connecting air pipe 4 are tightened to each other through the threaded connection structure 6, the upper sealing and pressing structure 7 locks and seals the upper edge of the air pipe 2, thereby achieving a fully sealed and secure connection between the air pipe 2 and the external air pipe connector 3.

[0022] In the present invention, a limiting structure 100 is provided inside the suction cup body 1 for limiting the moving distance of the internal connecting air pipe component 4.

[0023] The limiting structure 100 of the present invention includes an annular limiting groove 200 provided on the inner top wall of the suction cup body 1 , and a limiting convex ring 300 capable of cooperating with the annular limiting groove 200 is provided on the lower edge of the air delivery pipe 2 .

[0024] The annular limiting groove 200 cooperates with the limiting convex ring 300 to limit the external air pipe connecting piece 3, the internal connecting air pipe piece 4 and the outer sealing sleeve 5 from falling off.

[0025] The outer sealing sleeve 5 of the present invention includes a sleeve body 501, and a compression bottom ring 502 is provided at the lower end of the sleeve body 501. The compression bottom ring 502 and the limiting protruding ring 300 respectively compress the inner and outer surfaces of the suction cup body 1 to seal.

[0026] The threaded connection structure 6 of the present invention includes an internal thread 601 arranged on the inner wall of the internal connecting air pipe part 4, and an external thread 602 is arranged on the circumferential outer wall of the external air pipe connecting part 3. The external air pipe connecting part 3 is inserted into the internal connecting air pipe part 4, and the internal thread 601 and the external thread 602 are threadedly connected.

[0027] The upper sealing and clamping structure 7 of the present invention includes a sealing ring installation groove 701 arranged at the upper end of the sleeve body 501, a sealing ring 702 is installed in the sealing ring installation groove 701, and a sealing ring clamping ring 703 is provided on the circumferential outer wall of the external air pipe connector 3, and the sealing ring clamping ring 703 is pressed against the sealing ring 702.

[0028] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for illustrative purposes. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A vacuum suction cup for grasping a liquid crystal panel, comprising a suction cup body (1), characterized in that: The suction cup body (1) is provided with an air pipe (2) and an external air pipe connector (3). An internal air pipe connector (4) capable of being connected to the external air pipe connector (3) is installed in the air pipe (2). An outer sleeve (5) for an external sealing sleeve is provided on the outer sleeve of the air pipe (2). A threaded connection structure (6) is provided between the internal air pipe connector (4) and the external air pipe connector (3). An upper sealing pressing structure (7) is provided between the external sealing sleeve (5) and the external air pipe connector (3). The suction cup body (1) is made of hydrogenated nitrile rubber.

2. The vacuum suction cup for gripping a liquid crystal panel according to claim 1, characterized in that: A limiting structure (100) for limiting the moving distance of the internal connecting air pipe component (4) is provided in the suction cup body (1).

3. The vacuum suction cup for gripping a liquid crystal panel according to claim 2, characterized in that: The limiting structure (100) comprises an annular limiting groove (200) provided on the inner top wall of the suction cup body (1); and a limiting convex ring (300) capable of cooperating with the annular limiting groove (200) is provided on the lower edge of the air delivery pipe (2).

4. The vacuum suction cup for grasping a liquid crystal panel according to claim 3, characterized in that: The outer sealing sleeve (5) comprises a sleeve body (501), and a clamping bottom ring (502) is provided at the lower end of the sleeve body (501). The clamping bottom ring (502) and the limiting convex ring (300) respectively clamp the inner and outer surfaces of the suction cup body (1) to seal.

5. The vacuum suction cup for grasping a liquid crystal panel according to claim 4, characterized in that: The threaded connection structure (6) includes an internal thread (601) provided on the inner wall of the internal connecting air pipe component (4), and an external thread (602) is provided on the circumferential outer wall of the external air pipe connecting component (3). The external air pipe connecting component (3) is inserted into the internal connecting air pipe component (4), and the internal thread (601) and the external thread (602) are threadedly connected.

6. The vacuum suction cup for gripping a liquid crystal panel according to claim 5, characterized in that: The upper sealing and pressing structure (7) includes a sealing ring installation groove (701) provided at the upper end of the sleeve body (501), a sealing ring (702) is installed in the sealing ring installation groove (701), and a sealing ring pressing ring (703) is provided on the circumferential outer wall of the external air pipe connector (3), and the sealing ring pressing ring (703) is pressed against the sealing ring (702).

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