Fixing device for producing panel made of carbon-carbon composite material

Abstract

The utility model discloses a fixing device for producing a panel made of a carbon-carbon composite material, relates to the technical field of fixing devices, and solves the problems that in the prior art, a fixing device is deformed after being in a high-temperature environment for a long time, and the fixing precision is reduced. Comprising a bearing plate, the two ends of the bearing plate are symmetrically connected with two sets of clamping assemblies, each clamping assembly comprises a plurality of vertical clamps, each vertical clamp comprises a clamping head, the clamping head of the middle vertical clamp is connected with a clamping plate, and a first reset spring is connected between the clamping plate and the clamping head of the middle vertical clamp; the clamping heads of the vertical clamps on the two sides are connected with pressing blocks, the pressing blocks are arranged above the clamping plate, and second reset springs are connected between the pressing blocks and the clamping heads of the vertical clamps on the two sides. And a cooling cavity is formed in the clamping plate. The fixing device has the advantages that stress generated by thermal expansion is absorbed through elasticity, thermal deformation difference of the bearing plate is compensated, and fixing failure is avoided.

Description

Technical Field

[0001] This utility model relates to the field of fixing device technology, specifically to a fixing device for the production of carbon-carbon composite panel. Background Technology

[0002] Carbon / carbon composites are carbon matrix composites reinforced with carbon fibers or their fabrics. Composed entirely of carbon, they exhibit excellent stability under high and low temperature conditions, capable of withstanding temperatures up to 2500℃ for extended periods, and possess good high-temperature mechanical properties, with strength increasing with temperature. In the production of carbon / carbon composite panels, chemical vapor deposition (CVD) is commonly used. This process involves high-temperature chemical treatment, and ultra-thin flat panels are highly susceptible to deformation, requiring controlled shaping using specialized fixtures.

[0003] Current fixing devices generally have a structure similar to that described in patent application number "CN202121756710.9" regarding a clamping device for the production and processing of carbon-carbon composite panels. This device includes graphite clamping plates, with multiple sets of two plates per set, arranged opposite each other. Adjustable clamping mechanisms are fixed to the outer sides of each set of graphite clamping plates. This invention, through its adjustable clamping mechanisms, enables the installation of different numbers of graphite clamping plates and the adjustment of the distance between them. It also allows for the installation of graphite clamping plates of different sizes, thus satisfying the clamping requirements for carbon-carbon composite panels of different dimensions. There is no need to change to different models of clamping equipment; only the size, number, and distance between the graphite clamping plates need to be changed, greatly reducing processing costs.

[0004] However, this utility model is exposed to high temperatures for a long time, and its structure will be affected by the temperature, which will cause the fixing device to deform. This will reduce the fitting accuracy between the fixing devices, making it difficult to accurately fix the carbon / carbon composite panel and affecting the quality of the panel molding.

[0005] Therefore, this utility model proposes a fixing device for the production of carbon-carbon composite panel to solve the above-mentioned problems. Utility Model Content

[0006] The purpose of this invention is to provide a fixing device for the production of carbon-carbon composite panels, which solves the problem that existing fixing devices are subjected to high-temperature environments for a long time, causing their structures to deform and their fixing accuracy to decrease.

[0007] The technical solution adopted by this utility model to solve its technical problem is:

[0008] A fixing device for producing carbon-carbon composite panel includes a support plate. Two sets of clamping assemblies are symmetrically connected to both ends of the support plate. Each clamping assembly includes multiple vertical clamps, each vertical clamp including a clamping head. A clamping plate is connected to the clamping head of the middle vertical clamp, and a first return spring is connected between the clamping plate and the clamping head of the middle vertical clamp. Pressing blocks are connected to the clamping heads of the two side vertical clamps, and the pressing blocks are positioned above the clamping plate. Second return springs are connected between the pressing blocks and the clamping heads of the two side vertical clamps. A cooling chamber is provided inside the clamping plate, and a liquid inlet and a liquid outlet are provided at the ends of the clamping plate.

[0009] The support plate has multiple through slots, and the bottom of the vertical clamp is connected to a sliding block, which is slidably connected to the through slots.

[0010] Furthermore, the vertical clamp also includes a connecting seat, a handle assembly, a clamping arm, and a connecting arm. The handle assembly is hinged to the connecting seat, and both ends of the connecting arm are respectively hinged to the handle assembly and the clamping arm. The clamping head is longitudinally slidably connected to the connecting arm, and the clamping head is threaded with a fastening nut at both ends of the connecting arm.

[0011] Furthermore, the handle assembly includes a handle rod and a handle sleeve, the handle sleeve being fitted onto the handle rod, and the surface of the handle sleeve being provided with anti-slip texture.

[0012] Furthermore, the vertical clamp is provided with a cover, which is detachably connected to the support plate, and the connecting arm and the clamping head are located on the outside of the cover.

[0013] Furthermore, the connecting seats of a set of clamping components are fixedly connected to each other, and the two ends of the connecting seats are connected to movable rods. The cover is provided with a sliding groove corresponding to the movable rods, and the end of the movable rod is threaded with a fastening nut. The sliding groove is provided with scale markings.

[0014] Furthermore, the cooling chamber is connected to an inlet pipe and an outlet pipe at its end, and a baffle is installed inside the cooling chamber.

[0015] Furthermore, a first bellows is connected to the outer periphery of the first return spring, and the first bellows is connected between the clamping plate and the clamping head of the vertical clamp in the middle; a second bellows is connected to the outer periphery of the second return spring, and the second bellows is connected between the pressing block and the clamping head of the vertical clamp.

[0016] In summary, compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. The first and second return springs of this utility model absorb the stress generated by thermal expansion through elastic deformation, compensate for the thermal deformation difference of the bearing plate, and ensure stable clamping force. The bellows wraps around the spring, isolating the high temperature environment from the direct impact on the elastic element and extending its service life. The clamping plate has a built-in cooling cavity, which, together with the baffle design, allows the coolant to fully contact the high-temperature components, quickly removes heat, and avoids fixation failure caused by thermal expansion. The inlet pipe and outlet pipe form a closed loop, reducing coolant consumption and lowering production costs.

[0018] 2. The movable rod of this utility model slides in the sliding groove of the cover, and the clamp spacing can be quickly adjusted with the scale markings to adapt to different sized panels. Attached Figure Description

[0019] Figure 1 This is a three-dimensional illustration of the present invention. Figure 1 ;

[0020] Figure 2 This is a three-dimensional illustration of the present invention. Figure 2 ;

[0021] Figure 3 This is a partial cross-sectional view of the main view of this utility model;

[0022] Figure 4 for Figure 3 A magnified view of part A;

[0023] Figure 5 This is a partial cross-sectional view of the right side of this utility model;

[0024] In the diagram: 1. Support plate; 2. Clamping plate; 3. First return spring; 4. First bellows; 5. Pressing block; 6. Second return spring; 7. Second bellows; 8. Cooling chamber; 9. Liquid inlet; 10. Liquid outlet; 11. Liquid inlet pipe; 12. Liquid outlet pipe; 13. Baffle plate; 14. Through groove; 15. Sliding block; 16. Connecting seat; 17. Clamping head; 18. Handle rod; 19. Handle sleeve; 20. Clamping arm; 21. Connecting arm; 22. Cover; 23. Moving rod; 24. Sliding groove; 25. Scale markings; 26. Fastening nut. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] In this application, the terms "upper," "inner," "outer," "middle," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0027] like Figure 1-5 As shown, a fixing device for producing carbon-carbon composite panel includes a support plate 1. Two sets of clamping assemblies are symmetrically connected to both ends of the support plate 1. The clamping assemblies include multiple vertical clamps, each vertical clamp including a clamping head 17. A clamping plate 2 is connected to the clamping head 17 of the middle vertical clamp, and a first return spring 3 is connected between the clamping plate 2 and the clamping head 17 of the middle vertical clamp. Pressing blocks 5 are connected to the clamping heads 17 of the two side vertical clamps. The pressing blocks 5 are disposed above the clamping plate 2, and a second return spring 6 is connected between the pressing blocks 5 and the clamping heads 17 of the two side vertical clamps. A first corrugated pipe 4 is connected to the outer periphery of the first return spring 3, and the first corrugated pipe 4 is connected between the clamping plate 2 and the clamping head 17 of the middle vertical clamp. A second corrugated pipe 7 is connected to the outer periphery of the second return spring 6, and the second corrugated pipe 7 is connected between the pressing block 5 and the clamping head 17 of the vertical clamp.

[0028] Furthermore, a cooling chamber 8 is provided inside the clamping plate 2, and an inlet 9 and an outlet 10 are provided at the end of the clamping plate 2; an inlet pipe 11 and an outlet pipe 12 are connected to the end of the cooling chamber 8, and a baffle plate 13 is provided inside the cooling chamber 8. Multiple through slots 14 are provided on the support plate 1, and a sliding block 15 is connected to the bottom of the vertical clamp, and the sliding block 15 is slidably connected to the through slots 14.

[0029] Furthermore, the vertical clamp also includes a connecting seat 16, a handle assembly, a clamping arm 20, and a connecting arm 21. The handle assembly is hinged to the connecting seat 16, and both ends of the connecting arm 21 are hinged to the handle assembly and the clamping arm 20, respectively. A clamping head 17 is longitudinally slidably connected to the connecting arm 21, and a fastening nut 26 is threadedly connected to both ends of the clamping head 17 corresponding to the connecting arm 21. The handle assembly includes a handle rod 18 and a handle sleeve 19. The handle sleeve 19 is fitted onto the handle rod 18, and the surface of the handle sleeve 19 is provided with anti-slip texture. A cover 22 is provided on the outside of the vertical clamp. The cover 22 is detachably connected to the support plate 1, and the connecting arm 21 and the clamping head 17 are located on the outside of the cover 22. A set of clamping components are fixedly connected to each other by connecting seats 16. The two ends of the connecting seats 16 are connected to moving rods 23. The cover 22 is provided with sliding grooves 24 corresponding to the moving rods 23. The ends of the moving rods 23 are threaded with fastening nuts 26. The sliding grooves 24 are provided with scale markings 25.

[0030] The working process of this utility model is as follows:

[0031] First, the position of the clamping assembly is adjusted by sliding the moving rod 23 within the sliding groove 24 of the cover 22. After determining the appropriate position according to the scale markings 25 on the sliding groove 24, the moving rod 23 is fixed by tightening the fastening nut 26, thereby fixing the position of the clamping assembly. Then, the carbon / carbon composite panel is placed on the support plate 1, ready for clamping. Next, the handle assembly of the vertical clamp in the middle is rotated, causing the handle assembly to rotate around the hinge point with the connecting seat 16. The anti-slip texture on the handle sleeve 19 can increase the stability when gripping. Then, the rotation of the handle assembly drives the clamping arm 20 to move through the connecting arm 21. The connecting arm 21 is hinged to the handle assembly and the clamping arm 20. At the same time, the clamping head 17, which is longitudinally slidably connected to the connecting arm 21, also moves. During the movement, the clamping head 17 pushes the clamping plate 2 closer to the carbon / carbon composite panel. The first return spring 3 is compressed, and the clamping plate 2 contacts the panel and applies a certain pressure. The elastic force of the first return spring 3 makes the clamping plate 2 maintain the clamping force on the panel.

[0032] As the vertical clamps on both sides move, the clamping head 17 pushes the pressing block 5 closer to the clamping plate 2, the second return spring 6 is compressed, the pressing block 5 contacts the clamping plate 2 and applies a certain pressure, and the elastic force of the second return spring 6 makes the pressing block 5 maintain the clamping force on the clamping plate 2. Thus, through the coordinated action of multiple vertical clamps, the carbon / carbon composite panel is accurately fixed.

[0033] After the carbon / carbon composite panel is fixed, when working in a high-temperature environment, coolant can be introduced into the cooling chamber 8 through the liquid inlet 9 at the end of the clamping plate 2. After the coolant enters the cooling chamber 8, the baffle 13 installed in the cooling chamber 8 will change the flow direction and speed of the coolant, increase the contact area and time between the coolant and the clamping plate 2, and thus more effectively remove heat and cool the panel. After cooling, the coolant flows out from the liquid outlet 10. The coolant can be circulated through the liquid inlet pipe 11 and the liquid outlet pipe 12 connected to the liquid inlet 9 and the liquid outlet 10 to ensure a continuous cooling effect, reduce the possibility of deformation of the fixing device due to temperature, maintain the fitting accuracy between the fixing devices, and the first return spring 3 and the second return spring 6 can automatically compensate for thermal deformation deviation.

Claims

1. A fixing device for producing carbon-carbon composite panel, comprising a support plate (1), wherein two sets of clamping assemblies are symmetrically connected to both ends of the support plate (1), the clamping assemblies comprising multiple vertical clamps, each vertical clamp comprising a clamping head (17), a clamping plate (2) is connected to the clamping head (17) of the middle vertical clamp, and a first return spring (3) is connected between the clamping plate (2) and the clamping head (17) of the middle vertical clamp; pressing blocks (5) are connected to the clamping heads (17) of the vertical clamps on both sides, the pressing blocks (5) are disposed above the clamping plate (2), and a second return spring (6) is connected between the pressing blocks (5) and the clamping heads (17) of the vertical clamps on both sides; a cooling cavity (8) is provided inside the clamping plate (2), and an inlet (9) and an outlet (10) are provided at the end of the clamping plate (2); The bearing plate (1) has multiple through slots (14), and the bottom of the vertical clamp is connected to a sliding block (15), which is slidably connected to the through slots (14).

2. The fixing device for producing carbon-carbon composite panel according to claim 1, characterized in that, The vertical clamp also includes a connecting seat (16), a handle assembly, a clamping arm (20), and a connecting arm (21). The handle assembly is hinged to the connecting seat (16), and the two ends of the connecting arm (21) are respectively hinged to the handle assembly and the clamping arm (20). The clamping head (17) is longitudinally slidably connected to the connecting arm (21), and the clamping head (17) is threaded with a fastening nut (26) at both ends of the connecting arm (21).

3. The fixing device for producing a carbon-carbon composite panel according to claim 2, characterized in that, The handle assembly includes a handle rod (18) and a handle sleeve (19). The handle sleeve (19) is fitted onto the handle rod (18), and the surface of the handle sleeve (19) is provided with anti-slip texture.

4. The fixing device for producing a carbon-carbon composite panel according to claim 3, characterized in that, The vertical clamp is provided with a cover (22) on the outside, the cover (22) is detachably connected to the support plate (1), and the connecting arm (21) and the clamping head (17) are provided on the outside of the cover (22).

5. A fixing device for producing carbon-carbon composite panel according to claim 4, characterized in that, A set of clamping components are fixedly connected to each other, and the two ends of the connecting seat (16) are connected to the moving rod (23). The cover (22) is provided with a sliding groove (24) corresponding to the moving rod (23). The end of the moving rod (23) is threaded with a fastening nut (26). The sliding groove (24) is provided with a scale mark (25).

6. The fixing device for producing a carbon-carbon composite panel according to claim 1, characterized in that, The cooling chamber (8) is connected to an inlet pipe (11) and an outlet pipe (12) at its end, and a baffle plate (13) is provided inside the cooling chamber (8).

7. The fixing device for producing carbon-carbon composite panel according to claim 1, characterized in that, The outer periphery of the first return spring (3) is connected to a first bellows (4), which is connected between the clamping plate (2) and the clamping head (17) of the vertical clamp in the middle; the outer periphery of the second return spring (6) is connected to a second bellows (7), which is connected between the pressing block (5) and the clamping heads (17) of the vertical clamp on both sides.

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