Graphite sintering tool

Abstract

The utility model relates to the technical field of graphite sintering, in particular to a graphite sintering tool which comprises a bottom plate, the bottom plate is connected with a cover plate through a supporting column, a sintering part is arranged between the bottom plate and the cover plate and comprises a first curved surface partition plate, and a second curved surface partition plate is arranged on the inner side of the first curved surface partition plate. A third curved-surface partition plate is arranged on the inner side of the second curved-surface partition plate, and the first curved-surface partition plate, the second curved-surface partition plate and the third curved-surface partition plate are all of a hollow structure. According to the multi-film sintering device, polyimide films with different lengths are correspondingly placed in the first curved-surface partition plate, the second curved-surface partition plate and the third curved-surface partition plate to be sintered, multi-film sintering can be carried out, the space utilization rate is increased, and the productivity is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of graphite sintering, in particular to a graphite sintering tool. Background Art

[0002] The preparation of high-thermal-conductivity artificial graphite often requires rapid heating to ultra-high temperatures. The molds used to sinter these materials typically use graphite molds with high melting points and low thermal expansion coefficients. In the preparation of high-thermal-conductivity artificial graphite film, the polyimide film is placed in the appropriate sintering tooling, where it undergoes carbonization and graphitization in sequence.

[0003] In the existing technology, it is common to place polyimide films at intervals and stack them flat on the graphite plate. This method of stacking the films is inefficient. At the same time, due to the difference in force at different positions, the thickness of the semi-finished products of the thicker graphite films at different heights varies greatly, which is prone to produce poor appearance such as bumps and impurities, seriously affecting the product yield. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide a graphite sintering tool to solve the above problems.

[0005] The technical solution of the utility model for solving the above technical problems is: a graphite sintering tool, including a base plate, which is connected to a cover plate through a support column, a sintering part is provided between the base plate and the cover plate, and the sintering part includes a first curved partition, a second curved partition is provided on the inner side of the first curved partition, and a third curved partition is provided on the inner side of the second curved partition, and the first curved partition, the second curved partition, and the third curved partition are all hollow structures.

[0006] As a preferred technical solution of the present invention, a plurality of slots are provided on the bottom plate, and bumps are connected to the bottoms of the first curved partition plate, the second curved partition plate, and the third curved partition plate respectively.

[0007] As a preferred technical solution of the present invention, first through holes are opened on the surfaces of the first curved partition plate, the second curved partition plate, and the third curved partition plate.

[0008] As a preferred technical solution of the present invention, the sintering part is a concentric circle structure.

[0009] As a preferred technical solution of the present invention, both the bottom plate and the cover plate are provided with a second through hole.

[0010] As a preferred technical solution of the present invention, a partition is inserted into the middle of the support column.

[0011] As a preferred technical solution of the present invention, a plurality of slots are provided on the partition.

[0012] Since the present invention adopts such a structure, multi-film sintering can be performed by placing polyimide films of different lengths into the first curved partition, the second curved partition and the third curved partition for sintering, thereby increasing space utilization and improving production capacity; utilizing the heat transfer of the first through hole and the second through hole to avoid the situation where the graphite film receives more heat on the outside and less heat on the inside. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a front view of a graphite sintering tool of the present invention.

[0014] Figure 2 It is a top view of the sintering unit.

[0015] Figure 3 It is a structural diagram of the third curved partition.

[0016] Figure 4 This is a top view of the base plate.

[0017] In the figure: 1 is the bottom plate, 2 is the cover plate, 3 is the support column, 4 is the sintering part, 5 is the first curved partition plate, 6 is the second curved partition plate, 7 is the third curved partition plate, 8 is the partition plate, 9 is the slot, 10 is the protrusion, 11 is the first through hole, and 12 is the second through hole. DETAILED DESCRIPTION

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] like Figures 1 to 4 As shown, the utility model is a graphite sintering tool, including a base plate 1, which is connected to a cover plate 2 via a support column 3. A sintering portion 4 is provided between the base plate 1 and the cover plate 2. The sintering portion 4 includes a first curved partition 5, a second curved partition 6 is provided inside the first curved partition 5, and a third curved partition 7 is provided inside the second curved partition 6. The first curved partition 5, the second curved partition 6, and the third curved partition 7 are all hollow structures. Polyimide films of different lengths are placed into the first curved partition 5, the second curved partition 6, and the third curved partition 7 for sintering. This allows for multi-film sintering, improves the efficiency of film stacking and mounting in the early stage of sintering, increases space utilization, improves production capacity, is convenient and efficient to use, and has good practicality.

[0020] The present invention further comprises a plurality of slots 9 formed on the bottom plate 1, and protrusions 10 are connected to the bottoms of the first curved partition 5, the second curved partition 6, and the third curved partition 7. The protrusions 10 engage with the slots 9 to provide greater stability to the first curved partition 5, the second curved partition 6, and the third curved partition 7.

[0021] The utility model further has first through holes 11 on the surfaces of the first curved partition 5, the second curved partition 6, and the third curved partition 7. The first through holes 11 facilitate heat transfer and prevent the graphite film from receiving more heat outside and less heat inside.

[0022] Furthermore, the sintering part 4 of the present invention is in a concentric circle structure. The sintering part 4 in a concentric circle structure has a high space utilization rate.

[0023] Furthermore, the bottom plate 1 and the cover plate 2 are both provided with second through holes 12. The second through holes 12 on the bottom plate 1 and the cover plate 2 facilitate heat transfer, thereby preventing the graphite film from receiving more heat outside and less heat inside.

[0024] The utility model further has a partition 8 inserted in the middle of the support column 3, and a plurality of slots 9 are opened on the partition 8. In order to expand production, it can be stacked, and thus the partition 8 is also provided with a slot 9 for fixing the sintering part 4, which is practical.

[0025] The description and application of the present invention here are illustrative and are not intended to limit the scope of the present invention to the above-described embodiments. Variations and changes to the embodiments disclosed herein are possible, and actual replacements of the embodiments and various equivalent components are well known to those of ordinary skill in the art. It should be clear to those skilled in the art that the present invention can be implemented in other forms, structures, arrangements, proportions, and with other elements, materials, and components without departing from the spirit or essential characteristics of the present invention. Other variations and changes can be made to the embodiments disclosed herein without departing from the spirit or essential characteristics of the present invention.

Claims

1. A graphite sintering tool, comprising a base plate (1), characterized in that: The bottom plate (1) is connected to the cover plate (2) via a support column (3); a sintering portion (4) is provided between the bottom plate (1) and the cover plate (2); the sintering portion (4) comprises a first curved partition (5); a second curved partition (6) is provided on the inner side of the first curved partition (5); a third curved partition (7) is provided on the inner side of the second curved partition (6); the first curved partition (5), the second curved partition (6), and the third curved partition (7) are all hollow structures.

2. The graphite sintering tool according to claim 1, wherein: The bottom plate (1) is provided with a plurality of slots (9), and the bottoms of the first curved partition (5), the second curved partition (6), and the third curved partition (7) are respectively connected with protrusions (10).

3. The graphite sintering tool according to claim 1, wherein: A first through hole (11) is formed on the surfaces of the first curved partition plate (5), the second curved partition plate (6), and the third curved partition plate (7).

4. The graphite sintering tool according to claim 1, wherein: The sintering portion (4) is in a concentric circle structure.

5. The graphite sintering tool according to claim 1, characterized in that: The bottom plate (1) and the cover plate (2) are both provided with a second through hole (12).

6. The graphite sintering tool according to claim 1, characterized in that: A partition (8) is inserted into the middle of the support column (3).

7. The graphite sintering tool according to claim 6, characterized in that: The partition (8) is provided with a plurality of slots (9).

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