Cold isostatic press for graphite products

Abstract

The utility model discloses a cold isostatic press for graphite products, which comprises a base, four corners of the base are provided with supporting legs, the supporting legs are provided with a first supporting plate and a second supporting plate, the first supporting plate is provided with a working cylinder, an end cover capable of covering up and down is arranged right above the working cylinder, and the working cylinder is provided with a second supporting plate. The second supporting plate is provided with a hydraulic supercharger under the working cylinder, the base is provided with a movable static pressure main body, a first cavity is formed in the static pressure main body, and the end cover is matched with the working cylinder and then statically presses in the first cavity; when the cold isostatic press for the graphite product is used, graphite can be pressed into a solid body, the overall structure is stable under high pressure, the safety coefficient is high, the static pressing body is wide in application range, the graphite static pressing requirement is met, and the cold isostatic press is suitable for application and popularization.

Description

Technical Field

[0001] The utility model relates to the technical field of graphite processing equipment, in particular to a cold isostatic press for graphite products. Background Art

[0002] Isostatic graphite refers to special graphite with high strength, high density and high purity, which is widely used in metallurgy, chemical industry, aerospace, machinery and other industrial fields, especially large-scale and high-quality isostatic graphite. As an alternative material, it has a very broad application space in high-tech and new technology fields. Isostatic graphite is usually prepared by cold isostatic press.

[0003] The utility model patent with announcement number CN214872927U discloses an isostatically pressed graphite product production device, which belongs to the technical field of graphite processing equipment. The isostatically pressed graphite product production device includes a base plate, a cold isostatic press body fixedly installed on the upper surface of the base plate, and a working cylinder body slidably connected to the upper surface of the base plate. A placement plate is fixedly connected to the upper surface of the base plate close to the working cylinder body, and at least two support plates are slidably connected to the upper surface of the placement plate. A placement groove is fixedly connected to the upper surface of the support plate, and a material barrel is clamped on the inner side wall of the placement groove; the technical problem of inconvenient mold removal and placement is solved.

[0004] However, during use, the cold isostatic pressing body of the above device is inconvenient to cooperate with the working cylinder body; due to the high pressure in the working cylinder body, the barrel cover is prone to pressure release or popping out, which poses certain safety hazards and the use effect is not ideal. Utility Model Content

[0005] The purpose of the utility model is to solve the above problems and provide a cold isostatic press for graphite products which can press graphite into a solid body, has a stable overall structure under high pressure, a high safety factor, and a wide range of application of the static pressing body, and meets the needs of graphite static pressing.

[0006] To achieve the above-mentioned purpose, the technical solution of the utility model is: a cold isostatic press for graphite products, comprising a base, legs are provided at the four corners of the base, a first support plate and a second support plate are provided on the legs, a working cylinder is provided on the first support plate, an end cover that can be covered up and down is provided directly above the working cylinder, a hydraulic booster is provided on the second support plate directly below the working cylinder, a movable static pressure body is provided on the base, a first cavity is provided in the static pressure body, and the end cover cooperates with the working cylinder to statically pressurize the first cavity.

[0007] Preferably, the first support plate is provided with an ear plate on a side close to the working cylinder, a vertical hydraulic cylinder is provided on the ear plate, a lifting plate is provided at the output end of the hydraulic cylinder, the end cover is provided below the lifting plate, and the end cover is closed on the working cylinder through the hydraulic cylinder cover.

[0008] Preferably, a limiting rod is further provided on the surface of the lifting plate, and after the static pressure body passes through the first cavity and is pressed against the end cover, the outer side of the static pressure body is pressed against the limiting rod.

[0009] Preferably, the first support plate and the second support plate are arranged in the first cavity.

[0010] Preferably, extension plates are provided on both sides of the bottom of the static pressure body, travel wheels are provided at both ends of the extension plates, and guide rails cooperating with the travel wheels are provided on the surface of the base, and the static pressure body moves horizontally along the guide rails.

[0011] Preferably, the inner top wall of the first cavity is provided with a groove extending upward, and a lifting frame is provided in the groove. A plurality of pressure rollers are provided in the lifting frame along its length direction, and a screw is provided on the surface of the lifting frame. The screw extends vertically into the second cavity. The second cavity is provided above the first cavity, and an adjustment handle is provided at the end of the screw.

[0012] Preferably, a side wall groove is provided on the inner side of the lifting frame, a lifting block is provided at the bottom of the side wall groove, both ends of the pressure roller are connected to the corresponding lifting blocks, a compression spring is also provided in the side wall groove, one end of the compression spring is fixedly connected to the lifting block, and the other end is fixedly connected to the inner top wall of the side wall groove, and the pressure roller and the lifting block can be lifted and lowered in the side wall groove.

[0013] Preferably, guide rods are provided in the groove and the side wall groove, and the lifting frame and the lifting block are lifted and lowered vertically along the guide rods.

[0014] The utility model discloses a cold isostatic press for graphite products, comprising a base, legs are arranged at four corners of the base, a first support plate and a second support plate are arranged on the legs, a working cylinder is arranged on the first support plate, an end cover which can be covered up and down is arranged just above the working cylinder, a hydraulic booster is arranged just below the working cylinder on the second support plate, a movable static pressure body is arranged on the base, a first cavity is arranged in the static pressure body, and static pressure is performed in the first cavity after the end cover cooperates with the working cylinder; compared with the prior art, the cold isostatic press for graphite products has the advantages of being able to press graphite into a solid when in use, having a stable overall structure under high pressure, a high safety factor, and a large application range of the static pressure body, thus meeting the static pressing requirements of graphite. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a schematic diagram of the overall structure of a cold isostatic press for graphite products.

[0016] Figure 2 This is a schematic diagram of the structure of the static pressing body in a cold isostatic press for graphite products in the utility model. Figure 1 .

[0017] Figure 3 This is a schematic diagram of the structure of the static pressing body in a cold isostatic press for graphite products in the utility model. Figure 2 .

[0018] Figure 4 The utility model is a schematic diagram of the internal structure of a static pressing body in a cold isostatic pressing machine for graphite products.

[0019] Figure 5 For this utility model Figure 3 Schematic diagram of the enlarged structure at point A in the middle.

[0020] Figure 6 For this utility model Figure 4 Schematic diagram of the enlarged structure at point B in the middle.

[0021] Figure 7 The utility model is a schematic diagram of the use state of a cold isostatic press for graphite products.

[0022] In the figure: 1. base; 11. guide rail; 2. first support plate; 3. second support plate; 31. ear plate; 32. hydraulic cylinder; 33. lifting plate; 34. end cover; 35. limit rod; 4. working cylinder; 5. hydraulic booster; 6. static pressure body; 61. extension plate; 62. travel wheel; 7. first cavity; 71. groove; 72. lifting frame; 721. side wall groove; 722. lifting block; 723. compression spring; 73. guide rod; 74. pressure roller; 8. second cavity; 81. screw; 82. adjustment handle. DETAILED DESCRIPTION

[0023] The utility model is now described in further detail in conjunction with the accompanying drawings. The accompanying drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0024] Please refer to Figure 1-7 A cold isostatic press for graphite products comprises a base 1, legs are provided at four corners of the base 1, a first support plate 2 and a second support plate 3 are provided on the legs, a working cylinder 4 is provided on the first support plate 2, an end cover 34 which can be covered up and down is provided just above the working cylinder 4, a hydraulic booster 5 is provided just below the working cylinder 4 on the second support plate 3, a movable static pressure body 6 is provided on the base 1, a first cavity 7 is provided in the static pressure body 6, and static pressure is applied in the first cavity 7 after the end cover 34 cooperates with the working cylinder 4.

[0025] When in use, first put the graphite product into the mold, then put the mold into the working cylinder 4 with water and cover the end cover 34; then move the static pressure body 6 to make the working cylinder 4 and the end cover 34 enter the first cavity 7, and then start the hydraulic booster 5. As the hydraulic booster 5 continues to operate, the pressure in the working cylinder 4 will continue to increase, so that the pressure in the working cylinder is about 180MPa, thereby performing static pressure preparation on the internal graphite; since the end cover 34 and the upper lifting plate 33 are covered by the first cavity 7, the end cover 34 can be prevented from loosening and releasing pressure, while ensuring the overall safety performance.

[0026] In the solution of the utility model, the first support plate 2 is provided with an ear plate 31 on the side close to the working cylinder 4, and a vertical hydraulic cylinder 32 is provided on the ear plate 31. A lifting plate 33 is provided at the output end of the hydraulic cylinder 32, and the end cover 34 is provided below the lifting plate 33. The end cover 34 is covered on the working cylinder 4 through the hydraulic cylinder 32.

[0027] The surface of the lifting plate 33 is also provided with a limit rod 35. After the static pressure body 6 passes through the first cavity 7 and is pressed against the end cover 34, the outer side of the static pressure body 6 is in contact with the limit rod 35. That is to say, when the static pressure body 6 moves toward the working cylinder 4 until the outer side of the static pressure body 6 is in contact with the limit rod 35, it indicates that the static pressure body 6 has moved into place and the working cylinder 4 can be operated at a higher pressure. For details, please refer to Figure 7 When pressed together, the lifting plate and the end cover are both arranged in the first cavity to avoid pressure release of the end cover.

[0028] In this embodiment, the first support plate 2 and the second support plate 3 are arranged in the first cavity 7 to ensure smooth movement of the static pressure body 6.

[0029] In this embodiment, extension plates 61 are provided on both sides of the bottom of the static pressure body 6, and travel wheels 62 are provided at both ends of the extension plates 61. The surface of the base 1 is provided with guide rails 11 that cooperate with the travel wheels 62, and the static pressure body 6 moves horizontally along the guide rails 11.

[0030] In order to increase the matching range between the static pressure body 6 and the working cylinder 4 (and the end cover 34), an upwardly extending groove 71 is provided on the inner top wall of the first cavity 7, and a lifting frame 72 is provided in the groove 71. A plurality of pressure rollers 74 are provided in the lifting frame 72 along its own length direction. Under normal conditions, the pressure rollers protrude from the surface of the groove 71. A screw 81 is provided on the surface of the lifting frame 72. The screw 81 extends vertically into the second cavity 8. The second cavity 8 is provided above the first cavity 7, and an adjustment handle 82 is provided at the end of the screw 81.

[0031] The bottom of the screw 81 is rotatably connected to the lifting frame 72, and the screw 81 is threadedly connected to the static pressure body. When the adjustment handle 82 is rotated in the second cavity 8, the lifting frame 72 can be driven to move up and down. The lifting frame 72 moves up and down to adjust the distance between the end cover 34, thereby increasing the matching range.

[0032] Furthermore, a side wall groove 721 is provided on the inner side of the lifting frame 72, and a lifting block 722 is provided at the bottom of the side wall groove 721. Both ends of the pressure roller 74 are connected to the corresponding lifting blocks 722. A compression spring 723 is also provided in the side wall groove 721. One end of the compression spring 723 is fixedly connected to the lifting block 722, and the other end is fixedly connected to the inner top wall of the side wall groove 721. The pressure roller 74 and the lifting block 722 can be lifted and lowered in the side wall groove 721, wherein guide rods 73 are provided in the groove 71 and the side wall groove 721, and the lifting frame 72 and the lifting block 722 are both lifted and lowered vertically along the guide rods 73.

[0033] Since the pressure roller leaks out of the surface of the groove 71, when the static pressure body 6 moves into position and the pressure roller cannot effectively press the end cover 34 (lifting plate 33), the adjustment handle is turned to move the lifting frame 72 downward. At this time, the lifting frame gradually presses the pressure roller downward on the lifting plate, and the pressure roller is retracted into the lifting frame through the compression spring. The bottom end of the lifting frame tightly contacts the lifting plate 33 to stabilize the overall pressure.

[0034] After the lifting plate 33 and the end cover 34 are closed on the working cylinder 4, if the lifting plate 33 is flush with the inner top surface of the first cavity 7, the pressure roller floats upward along with the pressure spring during pressing, further ensuring the pressing effect.

[0035] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A cold isostatic press for graphite products, comprising a base, wherein four corners of the base are provided with legs, and the legs are provided with a first support plate and a second support plate, wherein: A working cylinder is provided on the first support plate, and an end cover which can be covered up and down is provided directly above the working cylinder. A hydraulic booster is provided directly below the working cylinder on the second support plate. A movable static pressure body is provided on the base, and a first cavity is provided in the static pressure body. After the end cover cooperates with the working cylinder, static pressure is exerted in the first cavity.

2. The cold isostatic press for graphite products according to claim 1, characterized in that: The first support plate is provided with an ear plate on one side close to the working cylinder, a vertical hydraulic cylinder is provided on the ear plate, a lifting plate is provided at the output end of the hydraulic cylinder, the end cover is provided below the lifting plate, and the end cover is closed on the working cylinder through the hydraulic cylinder cover.

3. The cold isostatic press for graphite products according to claim 2, characterized in that: A limiting rod is also provided on the surface of the lifting plate. After the static pressure body passes through the first cavity and is pressed against the end cover, the outer side of the static pressure body is pressed against the limiting rod.

4. The cold isostatic press for graphite products according to claim 1, characterized in that: The first support plate and the second support plate are disposed in the first cavity.

5. The cold isostatic press for graphite products according to claim 1 or 4, characterized in that: Extension plates are arranged on both sides of the bottom of the static pressure body, and running wheels are arranged at both ends of the extension plates. Guide rails cooperating with the running wheels are arranged on the surface of the base, and the static pressure body moves horizontally along the guide rails.

6. The cold isostatic press for graphite products according to claim 1, characterized in that: The inner top wall of the first cavity is provided with a groove extending upward, and a lifting frame is provided in the groove. A plurality of pressure rollers are provided in the lifting frame along its length direction. A screw is provided on the surface of the lifting frame, and the screw extends vertically into the second cavity. The second cavity is provided above the first cavity, and an adjustment handle is provided at the end of the screw.

7. The cold isostatic press for graphite products according to claim 6, characterized in that: A side wall groove is provided on the inner side of the lifting frame, a lifting block is provided at the bottom of the side wall groove, both ends of the pressure roller are connected with the corresponding lifting blocks, a compression spring is also provided in the side wall groove, one end of the compression spring is fixedly connected with the lifting block, and the other end is fixedly connected with the inner top wall of the side wall groove, and the pressure roller and the lifting block can be lifted and lowered in the side wall groove.

8. The cold isostatic press for graphite products according to claim 7, characterized in that: Guide rods are arranged in the groove and the side wall groove, and the lifting frame and the lifting block are lifted and lowered vertically along the guide rods.

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