Manufacturing method and processing equipment of flexible TPU graphite composite heat conduction mechanism

Abstract

The invention discloses a manufacturing method and processing equipment of a flexible TPU graphite composite heat conduction mechanism, and relates to the technical field of thermal management interface materials.The manufacturing method comprises the following operation steps that S1, a graphite diaphragm is pretreated, specifically, the graphite diaphragm is calendered and subjected to ultrasonic treatment in an interface modifier and an ethanol solution in sequence, and the surface compatibility of the graphite diaphragm and TPU is improved; s2, TPU coiled material cutting, wherein the TPU coiled material is cut into sheets matched with the graphite sheets in size; and S3, hot-pressing and crosslinking combination. According to the manufacturing method and the processing equipment of the flexible TPU graphite composite heat conduction mechanism, a composite material (composite mechanism) with high heat conductivity, high flexibility and fatigue resistance and the preparation method thereof are realized through a composite structure of a high-heat-conductivity graphite film and thermoplastic polyurethane (TPU) in cooperation with the telescopic motion effect of TPU and the high heat performance of the graphite film; the method is suitable for the fields of foldable electronic equipment, heat dissipation of flexible electronic devices, heat management of wearable equipment and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of thermal management interface materials, and in particular to a manufacturing method and processing equipment for a flexible TPU graphite composite heat conducting mechanism. Background Art

[0002] In the existing technology, traditional flexible thermal conductive materials (such as silicone / graphene composite materials) have problems such as low thermal conductivity, poor mechanical strength, and easy aging. The graphite material sintered with polyimide film has excellent thermal conductivity, but it is brittle and cannot be bent, making it difficult to meet the needs of flexible scenarios. At the same time, TPU material has good flexibility but poor thermal conductivity, and cannot be directly used in heat dissipation scenarios, and its efficiency needs to be improved.

[0003] Therefore, it is necessary to propose a manufacturing method and processing equipment for a flexible TPU graphite composite thermal conductive structure to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a method for manufacturing a flexible TPU graphite composite thermal conductive structure and processing equipment to solve the problems in the prior art, in which traditional flexible thermal conductive materials (such as silicone / graphene composite materials) have low thermal conductivity, poor mechanical strength, and easy aging. The graphite material sintered with polyimide film has excellent thermal conductivity, but is brittle and cannot be bent, making it difficult to meet the needs of flexible scenarios. At the same time, TPU material has good flexibility but poor thermal conductivity, and cannot be directly used in heat dissipation scenarios, and its utilization efficiency needs to be improved.

[0005] To achieve the above object, the present invention provides the following technical solution: a method for manufacturing a flexible TPU graphite composite heat conducting structure, comprising the following steps:

[0006] S1. Graphite film pretreatment: The graphite film is rolled and ultrasonically treated in an interfacial modifier and an ethanol solution in sequence to improve the surface compatibility with TPU;

[0007] S2, TPU coil cutting: cutting the TPU coil into sheets that match the size of the graphite sheet;

[0008] S3, hot pressing and gluing.

[0009] The present invention also discloses a processing device for a flexible TPU graphite composite heat-conducting mechanism, which is applied to the manufacturing method of the above-mentioned flexible TPU graphite composite heat-conducting mechanism, and further includes a frame, wherein a calendering roller is provided on the frame, a bearing is mounted on the calendering roller, a fixed seat is provided on the outside of the bearing, the fixed seat is mounted on the frame, and a liquid cavity is formed between the outer ring of the bearing and the fixed seat;

[0010] A liquid box is provided on the outside of the frame, a pressure plate is slidably provided inside the liquid box, and the pressure plate passes through the top of the liquid box, a filter is fixedly connected to the inside of the liquid box, and the filter divides the inside of the liquid box into an accumulation area and a purification area, wherein the purification area is close to the pressure plate, the purification area is communicated with the top end of the liquid cavity, and the accumulation area is communicated with the bottom end of the liquid cavity.

[0011] Preferably, a spring is provided inside the liquid box, one end of the spring is fixedly connected to the pressure plate, and the other end of the spring is fixedly connected to the inner wall of the liquid box.

[0012] Preferably, the liquid box and the pressure plate are in an arc shape.

[0013] Preferably, a first connecting component is provided between the purification area and the liquid cavity, the first connecting component including a first liquid tube, a first one-way valve and a first infusion channel, the first infusion channel is opened on the side wall of the fixing seat, the first infusion channel is connected to the top of the liquid cavity, one end of the first liquid tube is connected to the first infusion channel, the other end of the first liquid tube is connected to the purification area, and the first one-way valve is installed on the first liquid tube.

[0014] Preferably, a second connecting component is provided between the accumulation area and the liquid cavity, the second connecting component includes a second liquid tube, a second one-way valve and a second infusion channel, the second infusion channel is opened on the side wall of the fixed seat, the second infusion channel is connected to the bottom of the liquid cavity, one end of the second liquid tube is connected to the second infusion channel, the other end of the second liquid tube is connected to the accumulation area, and the second one-way valve is installed on the second liquid tube.

[0015] Preferably, a connecting rod is fixedly connected to the outer wall of the liquid box, and one end of the connecting rod away from the liquid box is fixedly connected to the frame.

[0016] Preferably, a circular hole is provided on the outer ring of the bearing, and a plurality of circular holes are provided.

[0017] Preferably, the top of the pressure plate is fixedly connected to a U-shaped seat, and the U-shaped seat is located on the side of the pressure plate facing away from the frame, the U-shaped seat is fixedly connected to a rotating shaft, a rotating plate is rotatably provided on the rotating shaft, a torsion spring is mounted on the rotating shaft, one end of the torsion spring is fixedly connected to the rotating plate, and the other end of the torsion spring is fixedly connected to the rotating shaft.

[0018] Preferably, a square groove is provided on one side of the calendering roller close to the liquid box, a clamping column is inserted into the inside of the square groove, and the end of the clamping column located outside the square groove is fixedly connected to a cross bar, and the cross bar and the clamping column are distributed in an L shape. A first magnet is fixedly connected to the inner wall of the square groove, and the end of the clamping column located inside the square groove is fixedly connected to a second magnet, and the first magnet and the second magnet are attracted to each other.

[0019] The technical effects and advantages of the present invention are as follows:

[0020] 1. The present invention uses a composite structure of high thermal conductivity graphite film and thermoplastic polyurethane (TPU) to synergize the telescopic motion effect of TPU with the high thermal performance of graphite film to achieve a composite material (composite structure) with high thermal conductivity, high flexibility and fatigue resistance, and its preparation method. The composite material is suitable for foldable electronic devices, heat dissipation of flexible electronic devices, thermal management of wearable devices and other fields.

[0021] 2. The present invention realizes lubrication of the bearing by providing structures such as a pressure plate and a liquid box, and can absorb debris generated by wear and tear, and can also filter out impurities, thereby improving the efficiency of the processing equipment;

[0022] 3. The present invention provides a U-shaped seat, a rotating plate and a cross bar, etc., so that when the calendering roller drives the bearing to rotate, the pressing plate is driven to move synchronously, which is convenient to operate and ensures the lubrication quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a flow chart of the method for manufacturing the flexible TPU graphite composite heat conducting structure of the present invention.

[0024] Figure 2 This is a schematic diagram of the structure of the unidirectional stretchable flexible TPU / graphite film composite material of the present invention.

[0025] Figure 3 This is a schematic diagram of the structure of the bidirectionally stretchable flexible TPU / graphite film composite material of the present invention.

[0026] Figure 4 This is a structural schematic diagram of a one-view perspective of the processing equipment for the flexible TPU graphite composite heat conducting mechanism of the present invention.

[0027] Figure 5 This is a structural schematic diagram from another perspective of the processing equipment of the flexible TPU graphite composite heat conducting mechanism of the present invention.

[0028] Figure 6 It is a schematic diagram of the liquid box and pressure plate structure of the present invention.

[0029] Figure 7 It is a schematic diagram of the frame and connecting rod structure of the present invention.

[0030] Figure 8 For the present invention Figure 7 A magnified schematic diagram of the structure in the middle.

[0031] Figure 9 For the present invention Figure 7 A magnified schematic diagram of the structure at point B in the middle.

[0032] In the figure: 1. frame; 2. calendering roller; 3. liquid box; 4. pressing plate; 5. filter screen; 6. purification area; 7. accumulation area; 8. fixing seat; 9. bearing; 10. liquid chamber; 11. circular hole; 12. first liquid pipe; 13. first one-way valve; 14. second liquid pipe; 15. second one-way valve; 16. first infusion channel; 17. second infusion channel; 18. U-shaped seat; 19. rotating plate; 20. rotating shaft; 21. torsion spring; 22. square groove; 23. clamping column; 24. cross bar; 25. first magnet; 26. second magnet; 27. spring; 28. connecting rod. DETAILED DESCRIPTION

[0033] The present invention provides Figures 1 to 3 The method for manufacturing a flexible TPU graphite composite heat conducting structure shown includes the following steps:

[0034] S1. Graphite film pretreatment: The graphite film was rolled and ultrasonically treated in an interfacial modifier and an ethanol solution (power 300 W, 1 h) to improve the surface compatibility with TPU;

[0035] S2. TPU coil cutting: Cut the TPU coil into sheets that match the size of the graphite sheet. The length and width of the TPU are both at least 2mm larger than the size of the graphite sheet.

[0036] S3, hot pressing and adhesive bonding, TPU sheet Figure 1 301 and 302 with graphite film sheet Figure 1 In the middle 200 composite, the three sides of the rectangle enclose the edges 101, 102, and 103, leaving one free edge, forming a structure in which a continuous heat conduction path is separated from a displacement path. The edge sealing process can be double-sided tape bonding or hot pressing edge sealing.

[0037] Among them: TPU matrix: 5~100μm

[0038] Graphite diaphragm: 17~150μm

[0039] Interface modifier: 1%-5% (silane coupling agent KH-550 or KH-570).

[0040] Furthermore, the graphite diaphragms are oriented within the TPU sheet, forming a two-dimensional, highly efficient heat-conducting surface. The interfacial modifier acts as a slip medium between the graphite diaphragm and the TPU, reducing friction between the TPU and the graphite diaphragm during expansion and contraction, creating an interface where the TPU can slip relative to the graphite diaphragm. This fully utilizes the TPU's high elasticity and slip properties, ensuring that the expansion and contraction of the structure does not damage the graphite diaphragm.

[0041] Through the composite structure of high thermal conductivity graphite film and thermoplastic polyurethane (TPU), the telescopic motion effect of TPU and the high thermal performance of graphite film are synergistically achieved to realize a composite material (composite structure) with high thermal conductivity, high flexibility and anti-fatigue properties and its preparation method. It is suitable for foldable electronic devices, heat dissipation of flexible electronic devices, thermal management of wearable devices and other fields.

[0042] Example 1: Reference Figure 2 , the arrows indicate the slip movement of the TPU layer.

[0043] 1. Raw materials: TPU substrate: 15μm; graphite diaphragm (thermal conductivity 1500W / m·K): 40μm; interface modifier: 3%; double-sided tape 10μm.

[0044] 2. Process: After KH-550 modification, the graphite film is cut into 25mm*45mm sheets, and the TPU is cut into 30mm*50mm sheets. Figure 1 Use 10μm double-sided tape to attach the edge at position 103. Also use 2mm wide double-sided tape to attach edges 101 and 102, leaving the opposite edge of 103 free. Note that the graphite should not adhere to edges 101 and 102.

[0045] 3. Performance: thermal conductivity 850W / m·K, elongation at break 50%, thermal conductivity retention rate 92% after bending 20,000 times.

[0046] Example 2: Reference Figure 3 , the arrows indicate the slip movement of the TPU layer.

[0047] 1. Raw materials: TPU substrate: 10 μm; graphite diaphragm (thermal conductivity 1700 W / m·K): 25 μm; interface modifier: 3%; double-sided tape 10 μm.

[0048] 2. Process: After KH-550 modification, the graphite film is cut into 25mm*45mm sheets, and the TPU is cut into 30mm*50mm sheets. Figure 1 Use 10μm double-sided tape to attach the edge at position 103. Also use 2mm wide double-sided tape to attach edges 101 and 102, leaving the opposite edge of 103 free. Note that the graphite should not adhere to edges 101 and 102.

[0049] 3. Performance: Thermal conductivity 940W / m·K, elongation at break 120%, thermal conductivity retention 90% after bending 20,000 times.

[0050] The present invention also provides Figures 4 to 9The processing equipment of a flexible TPU graphite composite thermal conductive mechanism shown is applied to the manufacturing method of the above-mentioned flexible TPU graphite composite thermal conductive mechanism, and performs calendering treatment on the graphite membrane. It also includes a frame 1, on which a calendering roller 2 is provided. There are two calendering rollers 2, which are distributed up and down, and the calendering treatment is performed by the two calendering rollers 2; a bearing 9 is installed on the calendering roller 2, and a fixed seat 8 (which can be a bearing seat) is provided on the outside of the bearing 9. The fixed seat 8 is installed on the frame 1, and the bearing 9 and the fixed seat 8 are provided to improve the smoothness of the rotation of the calendering roller 2.

[0051] During specific use, the frame 1 is provided with a driving device, including a motor (not shown in the figure), which is used to drive the calendering roller 2 to rotate. The driving device is a common existing technology and will not be described in detail here.

[0052] Considering that the bearing 9 is prone to wear when the processing equipment is used continuously, the existing technology usually requires manual addition of lubricating oil, which is a cumbersome operation. In order to improve the convenience of use, a liquid cavity 10 is formed between the outer ring of the bearing 9 and the fixed seat 8, and a circular hole 11 is opened on the outer ring of the bearing 9, and a plurality of circular holes 11 are provided.

[0053] A liquid box 3 is provided on the outside of the frame 1, and lubricating liquid is injected into the interior of the liquid box 3. A connecting rod 28 is fixedly connected to the outer wall of the liquid box 3. The end of the connecting rod 28 away from the liquid box 3 is fixedly connected to the frame 1 to fix the liquid box 3. A pressure plate 4 is slidingly provided inside the liquid box 3, and the pressure plate 4 passes through the top of the liquid box 3. The liquid box 3 and the pressure plate 4 are in an arc shape, and the pressure plate 4 can be recovered into the interior of the liquid box 3. A filter screen 5 is fixedly connected to the interior of the liquid box 3 for filtering iron debris. The filter screen 5 divides the interior of the liquid box 3 into an accumulation area 7 and a purification area 6. The purification area 6 is close to the pressure plate 4. The accumulation area 7 contains lubricating liquid containing impurities, and the purification area 6 contains lubricating liquid after the impurities are filtered out.

[0054] A first connecting component is provided between the purification area 6 and the liquid cavity 10, and the first connecting component includes a first liquid pipe 12, a first one-way valve 13 and a first infusion channel 16. The first infusion channel 16 is opened on the side wall of the fixing seat 8. The first infusion channel 16 is connected to the top of the liquid cavity 10. One end of the first liquid pipe 12 is connected to the first infusion channel 16, and the other end of the first liquid pipe 12 is connected to the purification area 6. The first one-way valve 13 is installed on the first liquid pipe 12. The first one-way valve 13 is provided so that the coolant can enter the liquid cavity 10 from the purification area 6 and the first liquid pipe 12 without flowing in the opposite direction.

[0055] A second connecting component is provided between the stacking area 7 and the liquid cavity 10, and the second connecting component includes a second liquid pipe 14, a second one-way valve 15 and a second infusion channel 17. The second infusion channel 17 is opened on the side wall of the fixed seat 8, and the second infusion channel 17 is connected to the bottom of the liquid cavity 10. One end of the second liquid pipe 14 is connected to the second infusion channel 17, and the other end of the second liquid pipe 14 is connected to the stacking area 7. The second one-way valve 15 is installed on the second liquid pipe 14. The second one-way valve 15 is provided so that the lubricating liquid inside the liquid cavity 10 can enter the stacking area 7 through the second liquid pipe 14 without flowing in the opposite direction.

[0056] A spring 27 is provided inside the liquid box 3 , one end of the spring 27 is fixedly connected to the pressure plate 4 , and the other end of the spring 27 is fixedly connected to the inner wall of the liquid box 3 . The spring 27 is provided to reset the pressure plate 4 .

[0057] During actual use, the control pressure plate 4 is controlled to be recovered to the inside of the liquid box 3, so that the lubricating liquid after filtering out impurities enters the top of the liquid chamber 10 through the first liquid pipe 12, and flows from top to bottom in the liquid chamber 10, and at the same time enters the bearing 9 through the circular hole 11, thereby realizing the lubrication of the bearing 9; and when the pressure plate 4 is reset and extended to the outside of the liquid box 3 under the influence of the reset elastic force of the spring 27, the lubricating liquid inside the liquid chamber 10 is sucked out by the accumulation area 7 and the second liquid pipe 14, and the debris generated by wear is sucked out, thereby realizing the effect of debris cleaning, and the impurities are accumulated in the accumulation area 7.

[0058] The present invention realizes lubrication of the bearing 9 by providing structures such as the pressure plate 4 and the liquid box 3, and can absorb debris generated by wear and tear, and can also filter out impurities, thereby improving the use efficiency of the processing equipment.

[0059] In specific use, a material trough, a cover plate, etc. (not shown in the figure) that cooperate with the accumulation area 7 can be set on the liquid box 3. The operator opens the cover plate regularly and the material trough processes the impurities accumulated in the accumulation area 7.

[0060] In order to realize the sliding of the pressure plate 4, the top end of the pressure plate 4 is fixedly connected to a U-shaped seat 18, and the U-shaped seat 18 is located on the side of the pressure plate 4 facing away from the frame 1. A rotating shaft 20 is fixedly connected to the U-shaped seat 18, and a rotating plate 19 is rotatably provided on the rotating shaft 20. A torsion spring 21 is mounted on the rotating shaft 20, one end of the torsion spring 21 is fixedly connected to the rotating plate 19, and the other end of the torsion spring 21 is fixedly connected to the rotating shaft 20, and the elastic supporting force of the torsion spring 21 is appropriate.

[0061] A square groove 22 is provided on one side of the calendering roller 2 close to the liquid box 3. A clamping column 23 is inserted into the square groove 22. One end of the clamping column 23 outside the square groove 22 is fixedly connected to a cross bar 24. The cross bar 24 and the clamping column 23 are distributed in an L shape.

[0062] A first magnet 25 is fixedly connected to the inner wall of the square groove 22, and a second magnet 26 is fixedly connected to one end of the clamping column 23 located inside the square groove 22. The first magnet 25 and the second magnet 26 are attracted to each other and are arranged to fix the clamping column 23.

[0063] When lubrication is required, the clamping column 23 is inserted into the inside of the square groove 22. At this time, the first magnet 25 and the second magnet 26 are in contact. Since the magnetic properties of the first magnet 25 and the second magnet 26 on the side close to each other are opposite, the clamping column 23 is fixed under the action of the mutual attraction. At this time, the cross bar 24 and the rotating plate 19 are in the same vertical plane. When the calendering roller 2 rotates, the clamping column 23 and the cross bar 24 will be driven to rotate synchronously, and the cross bar 24 will rotate toward the rotating plate 19.

[0064] When the cross bar 24 contacts the rotating plate 19, the elastic supporting force of the torsion spring 21 is greater than the squeezing force of the cross bar 24 on the rotating plate 19. At this time, the rotating plate 19 remains stationary, and the elastic supporting force of the spring 27 is less than the squeezing force of the cross bar 24 on the rotating plate 19, so that the pressure plate 4 is recovered to the inside of the liquid box 3, and the lubricating liquid after filtering out impurities enters the top of the liquid cavity 10 through the first liquid pipe 12, and flows from top to bottom in the liquid cavity 10, and at the same time enters the bearing 9 through the circular hole 11, thereby realizing lubrication of the bearing 9.

[0065] After the spring 27 is fully contracted, the pressure plate 4 can no longer be retracted, and the cross bar 24 will continue to rotate, thereby causing the rotating plate 19 to rotate. After the rotating plate 19 tilts, the cross bar 24 and the rotating plate 19 are staggered; at this time, the rotating plate 19 loses its squeezing force and extends to the outside of the liquid box 3 under the influence of the restoring elastic force of the spring 27. The lubricating liquid inside the liquid cavity 10 is sucked out by the accumulation area 7 and the second liquid pipe 14, and the debris generated by wear is sucked out, thereby achieving the effect of debris cleaning, and impurities are accumulated in the accumulation area 7.

[0066] Then, the crossbar 24 continues to rotate, and the above steps are repeated several times.

[0067] In this process, the calendering roller 2 drives the bearing 9 to rotate, thereby improving the lubrication effect.

[0068] The present invention provides a U-shaped seat 18, a rotating plate 19 and a cross bar 24. When the calendering roller 2 drives the bearing 9 to rotate, the pressing plate 4 is simultaneously driven to move, which is convenient to operate and ensures lubrication quality.

[0069] After the lubrication process is completed, the structures such as the clamping column 23 are removed without affecting the calendering process of the graphite diaphragm.

Claims

1. A method for manufacturing a flexible TPU graphite composite thermal conductive structure, characterized in that: The following steps are included: S1. Graphite film pretreatment: The graphite film is rolled and ultrasonically treated in an interfacial modifier and an ethanol solution in sequence to improve the surface compatibility with TPU; S2, TPU coil cutting: cutting the TPU coil into sheets that match the size of the graphite sheet; S3, hot pressing and gluing.

2. A processing device for a flexible TPU graphite composite heat conducting mechanism, characterized in that: The method for manufacturing a flexible TPU graphite composite heat-conducting mechanism as claimed in claim 1 further comprises a frame (1), wherein a calendering roller (2) is provided on the frame (1), a bearing (9) is mounted on the calendering roller (2), a fixing seat (8) is provided outside the bearing (9), the fixing seat (8) is mounted on the frame (1), and a liquid cavity (10) is formed between the outer ring of the bearing (9) and the fixing seat (8); A liquid box (3) is provided on the outside of the frame (1), a pressure plate (4) is slidably provided inside the liquid box (3), and the pressure plate (4) passes through the top end of the liquid box (3), a filter screen (5) is fixedly connected to the inside of the liquid box (3), and the filter screen (5) divides the inside of the liquid box (3) into an accumulation area (7) and a purification area (6), wherein the purification area (6) is close to the pressure plate (4), the purification area (6) is communicated with and matched with the top end of the liquid cavity (10), and the accumulation area (7) is communicated with and matched with the bottom end of the liquid cavity (10).

3. The processing equipment of a flexible TPU graphite composite heat conducting mechanism according to claim 2, characterized in that: A spring (27) is provided inside the liquid box (3), one end of the spring (27) is fixedly connected to the pressure plate (4), and the other end of the spring (27) is fixedly connected to the inner wall of the liquid box (3).

4. The processing equipment of a flexible TPU graphite composite heat conducting mechanism according to claim 2, characterized in that: The liquid box (3) and the pressure plate (4) are in an arc shape.

5. The processing equipment of a flexible TPU graphite composite heat conducting mechanism according to claim 2, characterized in that: A first communication component is provided between the purification zone (6) and the liquid cavity (10), the first communication component comprising a first liquid pipe (12), a first one-way valve (13) and a first infusion channel (16), the first infusion channel (16) being opened on the side wall of the fixing seat (8), the first infusion channel (16) being communicated with the top of the liquid cavity (10), one end of the first liquid pipe (12) being communicated with the first infusion channel (16), the other end of the first liquid pipe (12) being communicated with the purification zone (6), and the first one-way valve (13) being installed on the first liquid pipe (12).

6. The processing equipment of a flexible TPU graphite composite heat conducting mechanism according to claim 2, characterized in that: A second communicating component is provided between the stacking area (7) and the liquid cavity (10), and the second communicating component comprises a second liquid pipe (14), a second one-way valve (15) and a second liquid infusion channel (17). The second liquid infusion channel (17) is provided on the side wall of the fixing seat (8), the second liquid infusion channel (17) is communicated with the bottom of the liquid cavity (10), one end of the second liquid pipe (14) is communicated with the second liquid infusion channel (17), and the other end of the second liquid pipe (14) is communicated with the stacking area (7), and the second one-way valve (15) is installed on the second liquid pipe (14).

7. The processing equipment of a flexible TPU graphite composite heat conducting mechanism according to claim 2, characterized in that: A connecting rod (28) is fixedly connected to the outer wall of the liquid box (3), and one end of the connecting rod (28) away from the liquid box (3) is fixedly connected to the frame (1).

8. The processing equipment of a flexible TPU graphite composite heat conducting mechanism according to claim 2, characterized in that: A circular hole (11) is provided on the outer ring of the bearing (9), and a plurality of circular holes (11) are provided.

9. The processing equipment of a flexible TPU graphite composite heat conducting mechanism according to claim 2, characterized in that: The top end of the pressure plate (4) is fixedly connected to a U-shaped seat (18), and the U-shaped seat (18) is located on the side of the pressure plate (4) facing away from the frame (1); a rotating shaft (20) is fixedly connected to the U-shaped seat (18); a rotating plate (19) is rotatably arranged on the rotating shaft (20); a torsion spring (21) is sleeved on the rotating shaft (20); one end of the torsion spring (21) is fixedly connected to the rotating plate (19), and the other end of the torsion spring (21) is fixedly connected to the rotating shaft (20).

10. The processing equipment of the flexible TPU graphite composite heat conducting structure according to claim 9, characterized in that: A square groove (22) is provided on one side of the calendering roller (2) close to the liquid box (3); a clamping column (23) is inserted into the interior of the square groove (22); one end of the clamping column (23) located outside the square groove (22) is fixedly connected to a cross bar (24); the cross bar (24) and the clamping column (23) are distributed in an L shape; a first magnet (25) is fixedly connected to the inner wall of the square groove (22); one end of the clamping column (23) located inside the square groove (22) is fixedly connected to a second magnet (26); the first magnet (25) and the second magnet (26) are attracted to each other.

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