Graphite plate leveling tool

Abstract

The utility model relates to a graphite plate leveling tool, and belongs to the technical field of fuel cell bipolar plate leveling, the graphite plate leveling tool comprises a bottom plate and a pressing plate matched with the bottom plate for use, at least two flat plates are arranged between the opposite surfaces of the bottom plate and the pressing plate, and one side of the bottom plate is provided with a plurality of groups of supporting seats for mounting hinge bolts; a hinge assembly used for installing a pressing block and matched with a hinge bolt is arranged on the other side of the base plate, the pressing block makes contact with the pressing plate, the hinge assembly comprises a hinge base and a hinge rod, the hinge base is in threaded connection with the base plate, and one end of the hinge rod is connected with the hinge base through a pin shaft and rotates around the pin shaft; by adjusting the height of the hinge assembly on the hinge bolt, the pressing block on the hinge rod is pressed on the pressing plate, it is guaranteed that the graphite plate can be evenly pressed and leveled through the flat plate, and it is guaranteed that the flatness of the leveled graphite plate meets the use requirement.

Description

Technical Field

[0001] This disclosure belongs to the field of fuel cell bipolar plate leveling technology, specifically relating to a graphite plate leveling tool. Background Technology

[0002] The statements herein provide only background information in relation to this disclosure and do not necessarily constitute prior art.

[0003] Graphite plates are flat sheets made of graphite material, possessing excellent electrical conductivity and high-temperature resistance, and are frequently used in the fabrication of bipolar plates for fuel cells. While graphite bipolar plates offer advantages over common metal bipolar plates, such as high conductivity, corrosion resistance, light weight, long service life, and good electrode compatibility, their thickness needs to be as thin as possible and their area as large as possible to improve the volumetric power density and overall performance of the fuel cell. However, if these thin and large graphite bipolar plates experience deformation and bending after production, it can lead to a decrease in product flatness. Insufficient flatness in graphite bipolar plates during use can cause uneven gas distribution channels, directly affecting the performance and quality of the fuel cell, and consequently impacting the efficiency and reliability of the entire fuel cell system.

[0004] The existing patent publication number CN108407099A discloses a graphite bipolar plate leveling fixture. When leveling graphite plates, it is necessary to limit and adjust the flat plate, graphite bipolar plate and heavy plate each time, and also to prevent the slippage between the three types of plates. If slippage occurs, the flatness of the graphite plate cannot be guaranteed to meet the requirements. This leads to a decrease in efficiency in subsequent leveling production of graphite plates and may even result in unusable plates. Utility Model Content

[0005] The purpose of this disclosure is to provide a graphite plate leveling fixture that can at least solve one of the above-mentioned technical problems.

[0006] To achieve the above objectives, one or more embodiments of this disclosure provide a graphite plate leveling fixture, including a base plate and a clamping plate used in conjunction with the base plate. At least two flat plates are provided between the opposing surfaces of the base plate and the clamping plate. The base plate has a rectangular cross-section. On one of the two long sides of the rectangle, a plurality of support seats for mounting hinge bolts are provided, and the support seats are threadedly connected to the base plate. On the other side, a hinge assembly for mounting a pressure block and cooperating with the hinge bolts is provided. The pressure block is in contact with the clamping plate.

[0007] Furthermore, the hinge assembly includes a hinge seat and a hinge rod. The hinge seat is threadedly connected to the base plate. One end of the hinge rod is connected to the hinge seat via a pin and rotates around the pin. The other end is provided with a U-shaped opening groove that mates with the hinge bolt.

[0008] Furthermore, the middle part of the hinge rod is provided with a connecting groove that runs vertically through it and a pin hole that passes through the connecting groove.

[0009] Furthermore, the pressure block includes a rectangular block at the bottom and a connector that mates with the connecting groove. The connector has a pin hole, and the pressure block is fixed in the connecting groove by a pin.

[0010] Furthermore, a hexagonal nut is provided on the hinge bolt to adjust the tightness between the pressure block and the pressure plate and to limit the height of the hinge rod on the hinge bolt.

[0011] Furthermore, the plate is provided with multiple sets of semi-circular notches, and an extension plate is provided on the wide side of both sides of the plate, with the extension plates on both sides being symmetrical.

[0012] Furthermore, positioning posts are provided around the base plate to restrict the position of the flat plate, and the positioning posts correspond one-to-one with the semi-circular notches on the flat plate.

[0013] Furthermore, the leveling fixture also includes a handle, on which a groove is provided that matches the thickness of the extended plate on the flat plate, and the groove and the extended plate are in a transitional fit.

[0014] Furthermore, a support plate for supporting the leveling fixture is provided below the base plate.

[0015] Furthermore, the clamping plate is provided with lifting rings for hoisting purposes.

[0016] The beneficial effects of one or more of the above technical solutions are as follows:

[0017] This disclosure adjusts the height of the hinge assembly on the hinge bolt, causing the pressure block on the hinge rod to press against the pressure plate. This ensures that the flat plate can evenly press and flatten the graphite plate, guaranteeing that the flatness of the flattened graphite plate meets the usage requirements. At the same time, the hinge assembly improves the work efficiency when flattening multiple graphite plates, reduces the time required to fix the pressure block, thereby reducing the overall production cost and improving the continuity and reliability of the production process. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute a limitation thereof.

[0019] Figure 1 This is a perspective view of the overall structure in one or more embodiments of this disclosure;

[0020] Figure 2 This is a bottom view of the overall structure in one or more embodiments of this disclosure;

[0021] Figure 3 This is a schematic diagram of the hinge rod structure in one or more embodiments of this disclosure;

[0022] Figure 4 This is a schematic diagram of the pressure block structure in one or more embodiments of this disclosure;

[0023] Figure 5 This is a schematic diagram of a flat plate structure in one or more embodiments of this disclosure;

[0024] Figure 6 This is a schematic diagram of the handle structure in one or more embodiments of this disclosure.

[0025] In the diagram, 1 is the base plate; 2 is the flat plate; 3 is the handle; 4 is the clamping plate; 5 is the positioning post; 6 is the hinge seat; 7 is the hinge rod; 8 is the pressure block; 9 is the support seat; 10 is the hinge bolt; 11 is the lifting ring; 12 is the support plate; 13 is the connector; and 14 is the connecting groove. Detailed Implementation

[0026] like Figures 1-6 As shown, this embodiment provides a graphite plate leveling fixture, including a base plate 1, a clamping plate 4 used in conjunction with the base plate 1, and a handle 3. A support plate 12 for supporting the leveling fixture is provided below the base plate 1, and a lifting ring 11 for hoisting is provided on the clamping plate 4.

[0027] like Figure 1 As shown, at least two flat plates 2 are provided between the opposite surfaces of the base plate 1 and the clamping plate 4, and a graphite plate to be leveled is provided between two adjacent flat plates 2.

[0028] The base plate 1 has a rectangular cross-section. On one of the two long sides of the rectangle, there are multiple sets of support seats 9 for mounting hinge bolts 10. The support seats 9 are connected to the base plate 1 by threads. On the other side, there is a hinge assembly for mounting pressure blocks 8 and cooperating with the hinge bolts 10. The pressure blocks 8 are in contact with the pressure plate 4 and are pressed onto the pressure plate 4 by the hinge assembly. This can effectively apply pressure to the pressure plate 4, thereby ensuring the reliability of the entire device during leveling.

[0029] Specifically, the hinge assembly includes a hinge base 6 and a hinge rod 7. The hinge base 6 is connected to the base plate 1 by a thread, ensuring the stability and reliability of the hinge base 6. One end of the hinge rod 7 is connected to the hinge base 6 by a pin, and the hinge rod 7 rotates around the pin. The other end of the hinge rod 7 is provided with a U-shaped opening groove that mates with the hinge bolt 10, enhancing the flexibility and convenience of using the hinge assembly.

[0030] Meanwhile, in order to improve the adjustability of the hinge assembly, a hexagonal nut is provided on the hinge bolt 10. The tightness between the pressure block 8 and the pressure plate 4 is adjusted by the hexagonal nut, thereby limiting the height of the hinge rod 7 on the hinge bolt 10. The operator can adjust the tightness between the pressure block 8 and the pressure plate 4 on the hinge assembly according to the actual needs of the number of graphite plates and flat plates 2 to be placed, ensuring the stability and durability of the hinge assembly during long-term use.

[0031] like Figure 3 and Figure 4 As shown, a through-hole 14 and a pin hole passing through the through-hole 14 are provided in the middle part of the hinge rod 7; the pressure block 8 includes a rectangular block at the bottom and a connector 13 that mates with the through-hole 14. The connector 13 has a pin hole, and the pressure block 8 is fixed in the through-hole 14 by a pin. This ensures the stability and durability of the pressure block 8 when it is pressed, and the pin connection method also improves the flexibility and operability of the overall structure.

[0032] like Figure 5 As shown, the plate 2 has multiple sets of semi-circular notches. An extension plate is provided on the wide side of both sides of the plate 2. The extension plates on both sides are symmetrical. The total length of the extension plate and the plate 2 is less than the length of the base plate 1. The length of the extension plate is equal to half the width of the plate 2. In order to ensure that the plate 2 can be accurately placed in the appropriate position on the base plate 1, positioning posts 5 are provided around the base plate 1 to restrict the position of the plate 2. The positioning posts 5 correspond one-to-one with the semi-circular notches on the plate 2. When the plate 2 is placed in place, the positioning posts 5 will be locked in the corresponding semi-circular notches, thereby ensuring the stability and precise alignment of the plate 2 on the base plate 1.

[0033] like Figure 1 and Figure 6 As shown, the leveling fixture also includes a handle 3, which has a groove that matches the thickness of the extension plate on the flat plate 2. The groove and the extension plate are in a transitional fit. The handle 3 allows the operator to move the flat plate 2 easily, thereby reducing labor intensity and improving work efficiency during operation.

[0034] The working principle of this utility model is as follows:

[0035] In use, loosen the hexagonal nut on the hinge bolt 10, pull the hinge rod 7 to one side of the hinge seat 6 to open it, and then place it on the top of the base plate 1 in the order of flat plate, graphite plate, flat plate, so that there is a graphite plate between each adjacent flat plate 2. Then, place the pressure plate 4 on the topmost flat plate 2, and then swing the hinge rod 7 to one side of the hinge bolt 10 so that the pressure block 8 on the hinge rod 7 presses on the pressure plate 4. Then tighten the hexagonal nut on the hinge bolt 10 to adjust the tightness between the pressure block 8 on the hinge assembly and the pressure plate 4, and ensure that the flatness of the graphite plate meets the requirements of use.

[0036] While the specific embodiments of this disclosure have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of this disclosure. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of this disclosure are still within the scope of protection of this disclosure.

Claims

1. A graphite sheet flattening tool, characterized by, The leveling tool comprises a base plate and a pressing plate used in cooperation with the base plate, and at least two flat plates are arranged between opposite surfaces of the base plate and the pressing plate.

2. The graphite plate flattening tooling of claim 1, wherein, The cross section of the base plate is rectangular, and a plurality of groups of support seats for mounting hinge bolts are arranged on one long side of the rectangular base plate, and hinge assemblies for mounting pressing blocks and cooperating with the hinge bolts are arranged on the other long side of the rectangular base plate.

3. The graphite plate flattening tooling of claim 2, wherein, The hinge assembly comprises a hinge seat and a hinge rod, the hinge seat is threadedly connected with the base plate, one end of the hinge rod is connected with the hinge seat through a pin shaft and rotates around the pin shaft, and the other end of the hinge rod is provided with a U-shaped opening slot for cooperating with the hinge bolt.

4. The graphite plate flattening tooling of claim 1, wherein, A connecting slot penetrating the hinge rod from top to bottom and a pin hole penetrating the connecting slot are arranged at a middle part of the hinge rod.

5. The graphite sheet flattening tooling of claim 1, wherein, The pressing block comprises a rectangular block at the bottom and a connecting piece for cooperating with the connecting slot, the connecting piece is provided with a pin hole, and the pressing block is fixed in the connecting slot through a pin shaft.

6. The graphite sheet flattening tooling of claim 1, wherein, A hexagonal nut is arranged on the hinge bolt for adjusting the tightness between the pressing block and the pressing plate and limiting the height of the hinge rod on the hinge bolt.

7. The graphite sheet flattening tooling of claim 1, wherein, A plurality of groups of semicircular notches are arranged on the flat plate, and an elongated plate is arranged on the wide side of each flat plate.

8. The graphite sheet flattening tooling of claim 1, wherein, Positioning columns for limiting the position of the flat plate are arranged around the base plate, and the positioning columns correspond to the semicircular notches on the flat plate one by one.

9. The graphite sheet flattening tooling of claim 1, wherein, The leveling tool further comprises a handle, and a groove with a thickness corresponding to the elongated plate is arranged on the handle, and the groove and the elongated plate are in transition fit.

10. The graphite sheet flattening tooling of claim 1, wherein, A support plate for supporting the leveling tool is arranged below the base plate. A lifting ring for lifting is arranged on the pressing plate.

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