Vacuum clamp for graphite products

Abstract

The utility model discloses a graphite product vacuum clamp, which belongs to the clamp field, and comprises a vacuum box body, the top of the vacuum box body is fixedly connected with a mounting disc, the bottom of the vacuum box body is provided with a plurality of contact column heads with the same structure, one side of the top of the vacuum box body is fixedly provided with a pipeline joint, and the other side of the top of the vacuum box body is fixedly provided with a connecting rod. According to the graphite product vacuum fixture, the plurality of telescopic contact column heads are arranged at the bottom of the vacuum box body of the graphite product vacuum fixture, so that the graphite product vacuum fixture can adapt to shrinkage of graphite products in different shapes, and the fitting goodness of the plurality of contact column heads of the fixture and the outer surfaces of the graphite products is improved; and the ejector pin is arranged in the contact column head, so that the graphite product can be conveniently sucked through the contact column head and the silica gel sucker under the negative pressure vacuum condition in the vacuum box body, air leakage in other contact column heads not in contact with the graphite product is avoided, and the clamping stability of the vacuum clamp is improved.

Description

Technical Field

[0001] The utility model relates to the field of clamps, and more specifically to a vacuum clamp for graphite products. Background Art

[0002] Graphite has excellent properties, such as high temperature resistance, electrical conductivity, thermal conductivity, lubricity, chemical stability, plasticity, thermal shock resistance, etc., and is therefore widely used in various fields such as metallurgy, chemical industry, machinery, medical equipment, nuclear energy, automobiles, aerospace, etc. Although graphite products are hard, they are relatively brittle and are easily damaged when knocked by external forces. Therefore, in order to avoid damage to graphite products during transfer, vacuum clamps are sometimes used to clamp graphite products for transfer.

[0003] Existing vacuum clamps for clamping and transferring graphite products are usually set to a structure that is compatible with the graphite products for clamping. However, they have poor adaptability when clamping graphite products with complex external structures, which is not conducive to stable clamping and transfer of graphite products with complex external structures. Therefore, we propose a vacuum clamp for graphite products to solve the above-mentioned problems. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the problems existing in the prior art, the utility model aims to provide a vacuum clamp for graphite products, which can adapt to the contraction of graphite products of different shapes by arranging a plurality of retractable contact studs at the bottom of the vacuum box body of the vacuum clamp for graphite products, thereby improving the fit between the plurality of contact studs of the clamp and the outer surface of the graphite product, and facilitating the stable suction of the graphite product by the clamp; and arranging an ejector pin inside the contact stud, so that when the ejector pin inside the contact stud contacts the outer surface of the graphite product, the ejector pin is squeezed and moved upward, opening the passage between the vacuum box body and the inside of the needle cavity, thereby facilitating the negative pressure vacuum condition inside the vacuum box body to suck the graphite product through the contact studs and the silicone suction cup, avoiding air leakage inside the remaining contact studs that do not contact the graphite product, and improving the stability of the vacuum clamp during clamping.

[0006] 2. Technical solution

[0007] To solve the above problems, the utility model adopts the following technical solutions.

[0008] A graphite product vacuum fixture comprises a vacuum box body, a mounting plate is fixedly connected to the top of the vacuum box body, the interior of the vacuum box body is a hollow structure, a plurality of contact studs with the same structure are arranged at the bottom of the vacuum box body, and a silicone suction cup is fixedly installed at the bottom of the plurality of contact studs, a pipe joint is fixedly installed on one side of the top of the vacuum box body, and the interior of the pipe joint is connected with the interior of the vacuum box body;

[0009] A plurality of sliding holes are provided at the bottom of the vacuum box body corresponding to the plurality of contact studs, the outer sides of the contact studs are slidably connected to the insides of the sliding holes, and the tops of the contact studs located inside the vacuum box body are fixedly connected to a lower limit plate, the tops of the lower limit plate are fixedly connected to a support spring, the tops of the support springs are fixedly connected to an upper limit plate, and the tops of the upper limit plates are fixedly connected to the tops of the inner walls of the vacuum box body.

[0010] Furthermore, a needle cavity and an air inlet cavity are provided inside the contact column head, the needle cavity and the air inlet cavity are connected, the bottom of the needle cavity is connected to the inside of the silicone suction cup, and the top of the air inlet cavity is connected to the inside of the vacuum box body.

[0011] Furthermore, an ejector pin is arranged inside the needle cavity, and a group of positioning rods are slidably connected to the outside of the ejector pin, and two ends of the positioning rods are respectively fixedly connected to two sides of the inner wall of the needle cavity.

[0012] Furthermore, a Z-shaped exhaust channel is provided inside the ejector pin, and one end of the Z-shaped exhaust channel is adapted to one side inside the air inlet cavity.

[0013] Furthermore, a return spring is arranged inside the air intake cavity, and two ends of the return spring are respectively fixedly connected to the top of the ejector pin and one side of the inner wall of the air intake cavity.

[0014] Furthermore, the length of the ejector pin is greater than the length of the needle cavity.

[0015] 3. Beneficial effects

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] (1) This solution, by arranging a plurality of retractable contact pins at the bottom of the vacuum box of the graphite product vacuum clamp, can adapt to the shrinkage of graphite products of different shapes, improve the fit between the plurality of contact pins of the clamp and the outer surface of the graphite product, and facilitate the clamp to stably absorb the graphite product;

[0018] (2) In this solution, a pin is arranged inside the contact column head, so that when the pin inside the contact column head contacts the outer surface of the graphite product, the pin is squeezed and moved upward, opening the channel between the vacuum box body and the inside of the needle cavity, thereby facilitating the negative pressure vacuum condition inside the vacuum box body to suck the graphite product through the contact column head and the silicone suction cup, avoiding air leakage inside the remaining contact column heads that are not in contact with the graphite product, and improving the stability of the vacuum clamp during clamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the bottom structure of the silicone suction cup of the utility model;

[0021] Figure 3 It is a schematic diagram of the overall cross-sectional structure of the utility model;

[0022] Figure 4 It is a schematic diagram of the contact column connection structure of the utility model;

[0023] Figure 5 For the utility model Figure 4 Enlarged structural diagram at A in the middle.

[0024] Description of the numbers in the figure:

[0025] 1. Vacuum box body; 101. Sliding hole; 2. Mounting plate; 3. Contact column head; 301. Needle cavity; 302. Air inlet cavity; 4. Silicone suction cup; 5. Pipe joint; 6. Lower limit plate; 7. Support spring; 8. Upper limit plate; 9. Ejector pin; 901. Z-type exhaust channel; 10. Positioning rod; 11. Reset spring. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0027] Embodiment 1:

[0028] See also Figure 1-Figure 5 A graphite product vacuum fixture comprises a vacuum box body 1, a mounting plate 2 is fixedly connected to the top of the vacuum box body 1, the interior of the vacuum box body 1 is a hollow structure, a plurality of contact studs 3 with the same structure are arranged at the bottom of the vacuum box body 1, and a silicone suction cup 4 is fixedly installed at the bottom of the plurality of contact studs 3, a pipe joint 5 is fixedly installed on one side of the top of the vacuum box body 1, and the interior of the pipe joint 5 is connected with the interior of the vacuum box body 1, a plurality of sliding holes 101 are opened at the bottom of the vacuum box body 1 corresponding to the plurality of contact studs 3, the outer side of the contact studs 3 is slidably connected with the interior of the sliding holes 101, and a lower limit plate 6 is fixedly connected to the top of the contact studs 3 located inside the vacuum box body 1, a support spring 7 is fixedly connected to the top of the lower limit plate 6, an upper limit plate 8 is fixedly connected to the top of the support spring 7, and the top of the upper limit plate 8 is fixedly connected to the top of the inner wall of the vacuum box body 1.

[0029] When in use, the graphite product vacuum fixture is first installed on the mechanical arm used for graphite transfer and handling through the installation plate 2, and then the negative pressure vacuum pipeline is externally connected through the pipeline joint 5. When the graphite product needs to be clamped, the mechanical arm first drives the graphite product vacuum fixture to move to the position of the graphite product, and presses the vacuum box body 1 downward, forcing the multiple contact studs 3 at the bottom of the vacuum box body 1 to approach the graphite product. At this time, the corresponding multiple contact studs 3 adapted to the shape of the graphite product are retracted into the vacuum box body 1 under the influence of the downward pressure, and the remaining multiple contact studs 3 keep their positions unchanged, so that an area adapted to the shape structure of the graphite product is formed at the bottom of the vacuum box body 1 under the influence of the extrusion force;

[0030] In the process of pressing the contact column head 3 downward toward the graphite product, the silicone suction cup 4 is tightly attached to the outer surface of the graphite product, and the protruding ejector pin 9 shrinks upward along the direction of the needle cavity 301 until the top of the ejector pin 9 enters the air inlet cavity 302 and the Z-shaped exhaust channel 901 is connected to the inside of the air inlet cavity 302. At this time, the negative pressure vacuum pipe evacuates the inside of the vacuum box body 1, and makes the inside of the needle cavity 301 in a vacuum state through the air inlet cavity 302 and the Z-shaped exhaust channel 901, thereby forcing the silicone suction cup 4 to firmly absorb the graphite product to prevent the graphite product from falling. The silicone suction cup 4 has a certain flexibility and will not cause bumps and damage to the graphite product on the contact surface, so it is convenient to use.

[0031] Embodiment 2:

[0032] In view of the above embodiment 1, for further description, refer to Figure 3-Figure 5 A needle cavity 301 and an air inlet cavity 302 are provided inside the contact column head 3, the needle cavity 301 and the air inlet cavity 302 are connected, and the bottom of the needle cavity 301 is connected to the inside of the silicone suction cup 4, and the top of the air inlet cavity 302 is connected to the inside of the vacuum box body 1, a ejector pin 9 is provided inside the needle cavity 301, and a group of positioning rods 10 are slidably connected to the outside of the ejector pin 9, and the two ends of the positioning rods 10 are respectively fixedly connected to the two sides of the inner wall of the needle cavity 301, a Z-shaped exhaust channel 901 is provided inside the ejector pin 9, and one end of the Z-shaped exhaust channel 901 is adapted to one side of the inside of the air inlet cavity 302, a return spring 11 is provided inside the air inlet cavity 302, and the two ends of the return spring 11 are respectively fixedly connected to the top of the ejector pin 9 and one side of the inner wall of the air inlet cavity 302, and the length of the ejector pin 9 is greater than the length of the needle cavity 301.

[0033] By opening the needle cavity 301, the air inlet cavity 302 and the Z-shaped exhaust channel 901, a complete air pressure channel is formed among the needle cavity 301, the air inlet cavity 302 and the Z-shaped exhaust channel 901 when the ejector pin 9 moves upward, which is beneficial for the negative pressure vacuum condition inside the vacuum box body 1 to be transmitted to the silicone suction cup 4. The reset spring 11 not only connects the ejector pin 9 to prevent it from falling, but also supports the ejector pin 9 to facilitate its later reset. A group of positioning rods 10 facilitate the stable sliding of the ejector pin 9 inside the needle cavity 301.

[0034] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A graphite product vacuum fixture, comprising a vacuum box (1), characterized in that: The top of the vacuum box body (1) is fixedly connected with a mounting plate (2); the interior of the vacuum box body (1) is a hollow structure; the bottom of the vacuum box body (1) is provided with a plurality of contact studs (3) of the same structure, and the bottoms of the plurality of contact studs (3) are all fixedly mounted with silicone suction cups (4); a pipe joint (5) is fixedly mounted on one side of the top of the vacuum box body (1), and the interior of the pipe joint (5) is connected to the interior of the vacuum box body (1); A plurality of sliding holes (101) are provided at the bottom of the vacuum box body (1) corresponding to the plurality of contact studs (3); the outer sides of the contact studs (3) are slidably connected to the insides of the sliding holes (101); and a lower limit plate (6) is fixedly connected to the top of the contact studs (3) located inside the vacuum box body (1); a support spring (7) is fixedly connected to the top of the lower limit plate (6); an upper limit plate (8) is fixedly connected to the top of the support spring (7); and the top of the upper limit plate (8) is fixedly connected to the top of the inner wall of the vacuum box body (1).

2. A graphite product vacuum fixture according to claim 1, characterized in that: The contact column head (3) is provided with a needle cavity (301) and an air inlet cavity (302), the needle cavity (301) and the air inlet cavity (302) are connected, the bottom of the needle cavity (301) is connected to the inside of the silicone suction cup (4), and the top of the air inlet cavity (302) is connected to the inside of the vacuum box body (1).

3. A graphite product vacuum fixture according to claim 2, characterized in that: A ejector pin (9) is arranged inside the needle cavity (301), and a group of positioning rods (10) are slidably connected to the outside of the ejector pin (9), and two ends of the positioning rods (10) are respectively fixedly connected to two sides of the inner wall of the needle cavity (301).

4. A graphite product vacuum fixture according to claim 3, characterized in that: A Z-shaped exhaust channel (901) is provided inside the ejector pin (9), and one end of the Z-shaped exhaust channel (901) is adapted to one side inside the air inlet cavity (302).

5. A graphite product vacuum fixture according to claim 4, characterized in that: A return spring (11) is arranged inside the air inlet cavity (302), and two ends of the return spring (11) are respectively fixedly connected to the top of the ejector pin (9) and one side of the inner wall of the air inlet cavity (302).

6. A graphite product vacuum fixture according to claim 5, characterized in that: The length of the ejector pin (9) is greater than the length of the needle cavity (301).

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