A manufacturing process of a high-temperature-resistant spring and the high-temperature-resistant spring

Abstract

The application relates to the technical field of mechanical parts, in particular to a manufacturing process of a high-temperature-resistant spring and the high-temperature-resistant spring, which comprises a glue dipping pool, a heating box arranged at the front end of the glue dipping pool, a high-temperature box arranged at the front of the heating box in intervals, a material conveying group arranged outside the port at the front end of the heating box and a forming device arranged in the high-temperature box. The carbon fiber bundle soaked with thermosetting resin is conveyed by the material conveying group, enters the heating box, is low-temperature heated and shaped, enters the forming device, is rotated and bent by the material pushing sleeve of the spring making group on the end face of the material pressing ring and the outer wall of the forming cylinder, forms a spiral spring structure, is heated and solidified by the high-temperature box, and finally is cut in length by the ultrasonic cutter, so that the manufactured carbon fiber spring has the high-temperature-resistant characteristic and is suitable for a high-temperature environment of thousands of degrees.

Description

Technical Field

[0001] This invention relates to the field of mechanical parts technology, specifically to a manufacturing process for a high-temperature resistant spring and the high-temperature resistant spring itself. Background Technology

[0002] Carbon fiber bundles are intermediate materials used to manufacture carbon fiber products. They represent a form of carbon fiber composite material, formed by layering and cutting multiple carbon fibers, placing them in a mold, and then heating and pressurizing them to form carbonized filaments. Carbon fiber bundles are inherently very flexible, allowing for layering and cutting, and even the creation of various shapes. Curing is the process of gradually losing this flexibility and solidifying into a fixed shape. Thermosetting carbon fiber bundles are composite materials formed by impregnating carbon fiber bundles in thermosetting resin, which can be cured and molded upon heating.

[0003] Most existing springs are made by twisting iron wire and then electroplating it for rust prevention. Their high temperature resistance is limited, and they are difficult to maintain their elasticity at temperatures of several hundred degrees Celsius. In other words, they are not suitable for use in some high-temperature environments. Thermosetting carbon fiber bundles have the ability to withstand temperatures of thousands of degrees Celsius. Therefore, it is particularly necessary to design a new type of high-temperature resistant spring. Summary of the Invention

[0004] In order to overcome the defects in the prior art, the purpose of this invention is to provide a manufacturing process for a high-temperature resistant spring and a high-temperature resistant spring, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides a manufacturing process for a high-temperature resistant spring, comprising the following steps:

[0006] S1. First, fill the impregnation tank with more than half of the thermosetting resin.

[0007] S2. Then, several carbon fiber bundles are immersed in an impregnation bath and passed through a heating box at 60 to 65°C to be heated and preliminarily shaped to form thermosetting carbon fiber bundles.

[0008] S3. Then insert several thermosetting carbon fiber bundles between several pairs of feed rollers of the feed assembly, and bend the front end of the thermosetting carbon fiber bundles through the material hole of the feed sleeve of the spring-stopping assembly, and extend them to the space between the forming tube and the forming cylinder.

[0009] S3. Then start the feeding motor to drive several pairs of feeding wheels to clamp and crush the thermosetting carbon fiber bundles into the forming tube and move them against the pressing ring.

[0010] S4. Simultaneously start the servo motor to drive the feeding sleeve to rotate at a uniform speed, thereby bending the thermosetting carbon fiber bundles and distributing them in a ring at the end face of the pressing ring.

[0011] S5. At the same time, start the forward and reverse motor to drive the pressing ring forward, so that the thermosetting carbon fiber bundles are distributed in a spiral shape between the forming tube and the forming cylinder, and start the high temperature box of 120 to 125°C to cure the spiral thermosetting carbon fiber bundles.

[0012] S6. Continue until the pressure ring is removed from the molding tube and the molding cylinder is removed from the molding tube. Then the thermosetting carbon fiber bundle made into a spring shape can be taken out and moved to the ultrasonic cutting table for length cutting.

[0013] The equipment for manufacturing high-temperature resistant springs includes an impregnation tank, a heating box located at the front end of the impregnation tank, a high-temperature box located at intervals in front of the heating box, a material conveying group located outside the front port of the heating box, and a molding device located inside the high-temperature box. The material conveying group includes a pair of vertically distributed material conveying shafts and several material conveying wheels equally spaced on the material conveying shafts.

[0014] The forming device includes several forming tubes arranged side by side, a spring assembly located at the rear end of the forming tubes, a pressure ring sleeved inside the forming tubes, and a forward and reverse motor for driving the pressure ring to move back and forth. The forming tubes are arranged at the same height as a pair of upper and lower feeding wheels. The spring assembly includes a forming cylinder sleeved with the pressure ring, a feeding sleeve sleeved with the rear end of the forming tube, and a servo motor for driving the feeding sleeves to rotate synchronously. The forming cylinder has a spherical inner end and is inserted into the feeding sleeve. The feeding sleeve has a material through hole on its end face near the side.

[0015] As a further improvement to this technical solution, the dip pool is rectangular and has several material feeding grooves symmetrically opened at its front and rear ends. The bottom of the material feeding groove is embedded with a guide roller, and a glue receiving box is welded at the front end of the dip pool and below the material feeding groove.

[0016] As a further improvement to this technical solution, the top opening of the impregnation tank is fitted with a cover plate, and pressure frames are inserted into the front and rear of the cover plate. Pressure rollers are suspended between the bottom ends of the pressure frames, and a pressure electric cylinder is fixedly connected to the middle of the outer side of the impregnation tank by bolts.

[0017] As a further improvement to this technical solution, several infrared radiation tubes are installed inside the top of the heating box, and several infrared radiation tubes are also installed inside the top of the high-temperature box.

[0018] As a further improvement to this technical solution, each pair of upper and lower feeding wheels is positioned corresponding to several material troughs. A ring-shaped material trough is opened in the middle of the feeding wheel. Gears are sleeved on the same end of each pair of feeding shafts and the two gears mesh. A feeding motor is coaxially connected to the end of one of the feeding shafts.

[0019] As a further improvement to this technical solution, a support frame is sleeved at both ends of several of the formed tubes, wherein the support frame located in the middle has an insertion hole in the front-back direction, and a circular cavity communicating with the insertion hole is opened on the side of the support frame.

[0020] As a further improvement to this technical solution, a worm gear ring is sleeved on the outer end of the feeding sleeve, and a worm is engaged below the worm gear ring. The central shafts of several worms are coaxially connected and coaxially connected to the output shaft of the servo motor.

[0021] As a further improvement to this technical solution, pull rods are welded to both radial sides of the front end face of the pressure ring, and a main rod is welded between the front ends of several pull rods. A transmission gear is sleeved on the output shaft end of the forward and reverse motor. A rack that meshes with the transmission gear is inserted into the insertion hole. A support plate is welded to the front end of the rack. A double-hole sleeve is hinged to the bottom middle part of the main rod. A double-hole sleeve is hinged to the top rear end of the support plate. A folding rod is hinged between the two double-hole sleeves.

[0022] On the other hand, the present invention also provides a high-temperature resistant spring, including the above-mentioned manufacturing process of the high-temperature resistant spring, which is formed by heating and carbonizing carbon fiber bundles and thermosetting resin, and by gradually curing the shaped thermosetting carbon fiber bundles into hardened thermosetting carbon fiber bundles.

[0023] As a further improvement to this technical solution, the shaped thermosetting carbon fiber bundle is heated to 60 to 65°C, and the hardened thermosetting carbon fiber bundle is heated to 120 to 125°C.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] 1. The manufacturing process of this high-temperature resistant spring involves conveying carbon fiber bundles impregnated with thermosetting resin through a feeding assembly. The bundles are then heated and shaped at low temperature in a heating chamber, and then placed into a molding device. There, the spring forming assembly's feeding sleeve rotates and bends the bundles onto the end face of the pressing ring and the outer wall of the molding cylinder, forming a spiral spring structure. The springs are then cured and shaped in a high-temperature chamber, and finally cut to length using an ultrasonic cutter. This process ensures that the resulting carbon fiber springs have high-temperature resistance and are suitable for high-temperature environments up to 1,000 degrees Celsius.

[0026] 2. The manufacturing process and characteristics of this high-temperature resistant spring: Through the folding rod, the rack can drive the pressure ring to move back and forth. After the pressure ring is removed, the folding rod can be folded horizontally, and the pressure ring can be lowered to easily remove the carbon fiber spring. Attached Figure Description

[0027] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of the invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely illustrative to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. Those skilled in the art, guided by the teachings of this invention, can select various possible shapes and proportions to implement the invention according to specific circumstances.

[0028] Figure 1 This is a schematic diagram of the overall assembly structure of the present invention;

[0029] Figure 2 This is a schematic diagram of the overall internal spring forming state structure of the present invention;

[0030] Figure 3 This is a schematic diagram of the assembly structure of the molding device of the present invention;

[0031] Figure 4 This is a schematic diagram of the internal structure of the molding device of the present invention;

[0032] Figure 5 This is a schematic diagram of the impregnation tank structure of the present invention;

[0033] Figure 6 This is an exploded view of the pressing frame of the present invention;

[0034] Figure 7 This is a schematic diagram of the heating box structure of the present invention;

[0035] Figure 8 This is a molding diagram of the carbon fiber bundle spring of the present invention;

[0036] Figure 9 This is a schematic diagram of the material conveying assembly structure of the present invention;

[0037] Figure 10 This is an exploded view of the spring-stopping assembly of the present invention;

[0038] Figure 11 This is a schematic diagram of the overall assembly structure of the pressure ring of the present invention;

[0039] Figure 12 This is a schematic diagram of the molded tube assembly structure of the present invention.

[0040] The meanings of the labels in the diagram are as follows:

[0041] 100. Dipping tank; 101. Feeding trough; 102. Guide roller; 103. Glue receiving box; 110. Pressing frame; 111. Pressing roller; 120. Pressing electric cylinder; 130. Heating box; 131. Infrared radiation tube; 140. High temperature chamber;

[0042] 200. Conveying assembly; 210. Conveying shaft; 220. Conveying wheel; 221. Feed trough; 230. Conveying motor;

[0043] 300. Molding device; 310. Molding tube; 311. Support frame; 312. Insertion hole; 313. Circular cavity;

[0044] 320. Spring brake assembly; 321. Forming cylinder; 322. Material feeding sleeve; 3221. Material through hole; 323. Worm gear ring; 324. Worm; 325. Servo motor;

[0045] 330, Pressure ring; 331, Pull rod; 332, Main rod; 333, Folding rod; 340, Forward and reverse motor; 341, Transmission gear; 350, Rack; 351, Support plate; 360, Double hole sleeve. Detailed Implementation

[0046] The details of the present invention can be more clearly understood by referring to the accompanying drawings and the description of specific embodiments. However, the specific embodiments of the present invention described herein are for illustrative purposes only and should not be construed as limiting the invention in any way. Under the teachings of this invention, those skilled in the art can conceive of any possible modifications based on the invention, and these should all be considered to fall within the scope of the invention. The terms "installation" and "connection" should be interpreted broadly, referring to direct connection or indirect connection through an intermediate medium.

[0047] The terms "central axis," "vertical," "horizontal," "front," "rear," "upper," "lower," "left," "right," "top," "bottom," "inner," and "outer" used herein to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, in the description of the invention, "a number" means two or more, unless otherwise explicitly specified.

[0048] Please see Figures 1-12 As shown, this invention provides a manufacturing process and a high-temperature resistant spring, comprising the following steps:

[0049] S1. First, fill the impregnation tank 100 with more than half of the thermosetting resin;

[0050] S2. Then, several carbon fiber bundles are immersed in the impregnation tank 100 and passed through the heating box 130 at 60 to 65°C to be heated and preliminarily shaped to form thermosetting carbon fiber bundles.

[0051] S3. Then, insert several thermosetting carbon fiber bundles between several pairs of feed rollers 220 of the feed assembly 200, and bend the front end of the thermosetting carbon fiber bundles through the material hole 3221 of the feed sleeve 322 of the spring assembly 320, and extend them to the space between the forming tube 310 and the forming cylinder 321.

[0052] The annular cavity formed by the molding tube 310 and the molding cylinder 321 allows the malleable thermosetting carbon fiber bundles to coil and extend around the molding cylinder 321.

[0053] S3. Then start the feeding motor 230 to drive several pairs of feeding wheels 220 to clamp and roll the thermosetting carbon fiber bundles into the forming tube 310 and abut against the pressing ring 330.

[0054] The pressure ring 330 blocks the malleable thermosetting carbon fiber bundle, compressing it to form the pitch.

[0055] S4. Simultaneously start the servo motor 325 to drive the feeding sleeve 322 to rotate at a constant speed, thereby bending the thermosetting carbon fiber bundles and distributing them in a ring at the end face of the pressing ring 330.

[0056] S5. At the same time, the forward and reverse motor 340 is started to drive the pressing ring 330 to move forward, so that the thermosetting carbon fiber bundles are distributed in a spiral shape between the forming tube 310 and the forming cylinder 321, and the high temperature box of 120 to 125°C is started to cure the spiral thermosetting carbon fiber bundles.

[0057] The pitch of the thermosetting carbon fiber bundle spring is determined by the movement speed of the pressure ring 330. When the speed is slow, the thermosetting carbon fiber bundle spring is subjected to greater pressure, resulting in a smaller pitch. When the speed is fast, the thermosetting carbon fiber bundle spring is subjected to less pressure, resulting in a larger pitch.

[0058] S6. Until the pressure ring 330 moves out of the molding tube 310 and the molding cylinder 321 exits the molding tube 310, the thermosetting carbon fiber bundle made into a spring shape can be taken out and then moved to the ultrasonic cutting table for length cutting.

[0059] The high-temperature resistant spring of the present invention is made by heating and carbonizing carbon fiber bundles and thermosetting resin, and the shaped thermosetting carbon fiber bundles are gradually cured into hardened thermosetting carbon fiber bundles.

[0060] Specifically, the equipment for manufacturing high-temperature resistant springs includes an impregnation tank 100, a heating box 130 located at the front end of the impregnation tank 100, a high-temperature box 140 located at intervals in front of the heating box 130, a material conveying group 200 located outside the front port of the heating box 130, and a molding device 300 located inside the high-temperature box 140. The material conveying group 200 includes a pair of vertically distributed material conveying shafts 210 and several material conveying wheels 220 equally spaced on the material conveying shafts 210.

[0061] The molding device 300 includes a plurality of molding tubes 310 arranged side by side, a spring assembly 320 disposed at the rear end of the plurality of molding tubes 310, a pressing ring 330 sleeved inside the molding tubes 310, and a forward and reverse motor 340 for driving the pressing ring 330 to move back and forth. The molding tubes 310 and the upper and lower pairs of conveying wheels 220 are arranged at the same height.

[0062] The spring-braking assembly 320 includes a forming cylinder 321 sleeved with the pressure ring 330, a material-pushing sleeve 322 sleeved with the rear end of the forming tube 310, and a servo motor 325 for driving several material-pushing sleeves 322 to rotate synchronously. The forming cylinder 321 is spherical at its inner end and is inserted into the material-pushing sleeve 322. The end face of the material-pushing sleeve 322 is provided with a material-passing hole 3221 near the side.

[0063] Furthermore, the impregnation tank 100 is rectangular and has several material feeding grooves 101 symmetrically opened at its front and rear ends. The bottom of the material feeding groove 101 is embedded with a guide roller 102 for supporting the carbon fiber bundle and changing its moving direction. A glue receiving box 103 is welded to the front end of the impregnation tank 100 and below the material feeding groove 101 for collecting the glue liquid carried down by the guide roller 102 and returning it to the impregnation tank 100.

[0064] The top opening of the impregnation tank 100 is fitted with a cover plate, and pressure frames 110 are inserted into the front and rear of the cover plate. Pressure rollers 111 are suspended between the bottom ends of the pressure frames 110. A pressure cylinder 120 is fixedly connected to the middle of the outer side of the impregnation tank 100 by bolts. After the carbon fiber bundle is released by the wire roller, the carbon fiber bundle passes through the impregnation tank 100. The pressure frame 110 is driven by the pressure cylinder 120 to drive the pressure roller 111 to press the carbon fiber bundle into the impregnation tank 100 and impregnate it with thermosetting resin.

[0065] In addition, several infrared radiation tubes 131 are installed inside the top of the heating chamber 130, and several infrared radiation tubes 131 are also installed inside the top of the high temperature chamber 140. The infrared radiation tubes 131 in the high temperature chamber 140 have a higher power than the infrared radiation tubes 131 in the heating chamber 130, so that the carbon fiber bundles wrapped with thermosetting resin are first shaped at low temperature so that they can be plasticized into a spring structure, and then cured at high temperature.

[0066] Each pair of upper and lower feeding wheels 220 is positioned corresponding to several feeding grooves 101 so that the carbon fiber bundle can smoothly transition to the feeding wheel 220 and be clamped and moved; the middle of the feeding wheel 220 is provided with an annular material groove 221, which surrounds and clamps the carbon fiber bundle through the material grooves 221 of a pair of feeding wheels 220; gears are sleeved on the same end of a pair of feeding shafts 210 and the two gears mesh, and a feeding motor 230 is coaxially connected to the end of one of the feeding shafts 210.

[0067] Specifically, a worm gear ring 323 is sleeved on the outer end of the feeding sleeve 322, and a worm 324 is meshed below the worm gear ring 323. The central shafts of several worms 324 are coaxially connected and coaxially connected to the output shaft of the servo motor 325. The servo motor 325 drives several worms 324 to rotate, which in turn drives several worm gear rings 323 to rotate, thereby driving the feeding sleeve 322 to rotate. Then, the feeding hole 3221 drives the carbon fiber bundle to wrap around the wall of the forming tube 310.

[0068] Furthermore, a support frame 311 is sleeved at both ends of several forming tubes 310 to support the forming tubes 310; wherein the support frame 311 located in the middle has an insertion hole 312 in the front-back direction, and the side of the support frame 311 has a circular cavity 313 that communicates with the insertion hole 312.

[0069] Pull rods 331 are welded to the radial sides of the front end face of the pressure ring 330. A main rod 332 is welded between the front ends of several pull rods 331. A transmission gear 341 is sleeved on the output shaft end of the forward and reverse motor 340. A rack 350 that meshes with the transmission gear 341 is inserted into the insertion hole 312. A support plate 351 is welded to the front end of the rack 350. A double-hole sleeve 360 ​​is hinged to the bottom middle part of the main rod 332. A double-hole sleeve 360 ​​is hinged to the top rear end of the support plate 351. A folding rod 333 is hinged between two double-hole sleeves 360.

[0070] The bottom end of the folding rod 333 and the top ring of the support plate 351 are right-angled sides facing inwards, so that when the rack 350 moves forward, this limiting structure can be used to drive the pressure ring 330 out of the forming tube 310; and the top end of the folding rod 333 and the middle ring of the main rod 332 are right-angled sides facing outwards, so that when the rack 350 moves backwards, this limiting structure can be used to drive the pressure ring 330 into the forming tube 310, and after the pressure ring 330 moves out, the folding rod 333 can be folded horizontally and the pressure ring 330 can be lowered so that the carbon fiber spring can be easily removed.

[0071] It should be noted that the above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be used to limit the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A manufacturing process for a high-temperature resistant spring, characterized in that: Includes the following steps: S1. First, fill the impregnation tank (100) with more than half of the thermosetting resin; S2. Then, several carbon fiber bundles are immersed in the impregnation tank (100) and passed through the heating box (130) at 60 to 65°C to be heated and preliminarily shaped to form thermosetting carbon fiber bundles. S3. Then, insert several thermosetting carbon fiber bundles between several pairs of feed rollers (220) of the feed assembly (200), and bend the front end of the thermosetting carbon fiber bundle through the material hole (3221) of the feed sleeve (322) of the spring assembly (320), and extend it between the forming tube (310) and the forming cylinder (321). S3. Then start the feeding motor (230) to drive several pairs of feeding wheels (220) to clamp and roll the thermosetting carbon fiber bundle into the forming tube (310) and abut against the pressing ring (330). S4. Simultaneously start the servo motor (325) to drive the feeding sleeve (322) to rotate at a constant speed, thereby bending the thermosetting carbon fiber bundles and distributing them in a ring at the end face of the pressing ring (330). S5. At the same time, the forward and reverse motor (340) is started to drive the pressing ring (330) to move forward, so that the thermosetting carbon fiber bundles are distributed in a spiral shape between the forming tube (310) and the forming cylinder (321), and the high temperature box of 120 to 125°C is started to cure the spiral thermosetting carbon fiber bundles. S6. Until the pressure ring (330) moves out of the molding tube (310) and the molding cylinder (321) exits the molding tube (310), the thermosetting carbon fiber bundle made into a spring shape is taken out and then moved to the ultrasonic cutting table for length cutting. The equipment for manufacturing high-temperature resistant springs includes an impregnation tank (100), a heating box (130) located at the front end of the impregnation tank (100), a high-temperature box (140) located at intervals in front of the heating box (130), a material conveying group (200) located outside the front port of the heating box (130), and a molding device (300) located inside the high-temperature box (140). The material conveying group (200) includes a pair of vertically distributed material conveying shafts (210) and several material conveying wheels (220) arranged at equal intervals on the material conveying shafts (210). The forming device (300) includes a plurality of forming tubes (310) arranged side by side, a spring assembly (320) disposed at the rear end of the plurality of forming tubes (310), a pressure ring (330) sleeved in the forming tube (310), and a forward and reverse motor (340) for driving the pressure ring (330) to move back and forth. The forming tubes (310) are arranged at the same height as a pair of upper and lower feeding wheels (220). The spring assembly (320) includes a forming cylinder (321) sleeved with the pressure ring (330), a feeding sleeve (322) sleeved with the rear end of the forming tube (310), and a servo motor (325) for driving the plurality of feeding sleeves (322) to rotate synchronously. The forming cylinder (321) has a spherical inner end and is inserted into the feeding sleeve (322). The feeding sleeve (322) has a material through hole (3221) on its end face and near the side.

2. The manufacturing process of the high-temperature resistant spring according to claim 1, characterized in that: The dip pool (100) is rectangular and has several material feeding grooves (101) symmetrically opened at its front and rear ends. The bottom of the material feeding groove (101) is embedded with a guide roller (102). A glue receiving box (103) is welded to the front end of the dip pool (100) and below the material feeding groove (101).

3. The manufacturing process of the high-temperature resistant spring according to claim 1, characterized in that: The top opening of the impregnation tank (100) is fitted with a cover plate, and a pressure frame (110) is inserted into the front and back of the cover plate. A pressure roller (111) is suspended between the bottom ends of the pressure frame (110). A pressure cylinder (120) is fixedly connected to the middle of the outer side of the impregnation tank (100) by bolts.

4. The manufacturing process of the high-temperature resistant spring according to claim 1, characterized in that: Several infrared radiation tubes (131) are installed inside the top of the heating box (130), and several infrared radiation tubes (131) are also installed inside the top of the high temperature box (140).

5. The manufacturing process of the high-temperature resistant spring according to claim 2, characterized in that: Each pair of conveying wheels (220) is positioned corresponding to several material grooves (101). A ring-shaped material groove (221) is opened in the middle of the conveying wheel (220). Gears are sleeved on the same end of a pair of conveying shafts (210) and the two gears mesh. A conveying motor (230) is coaxially connected to the end of one of the conveying shafts (210).

6. The manufacturing process of the high-temperature resistant spring according to claim 1, characterized in that: Several of the formed tubes (310) are fitted with support brackets (311) at both ends. The support bracket (311) located in the middle has a hole (312) in the front-back direction, and the side of the support bracket (311) has a round cavity (313) that communicates with the hole (312).

7. The manufacturing process of the high-temperature resistant spring according to claim 6, characterized in that: The outer end of the feeding sleeve (322) is fitted with a worm gear ring (323), and a worm (324) is engaged below the worm gear ring (323). The central shafts of several worms (324) are coaxially connected and coaxially connected with the output shaft of the servo motor (325).

8. The manufacturing process of the high-temperature resistant spring according to claim 7, characterized in that: Pulling rods (331) are welded to both radial sides of the front end face of the pressure ring (330). A main rod (332) is welded between the front ends of several pulling rods (331). A transmission gear (341) is sleeved on the output shaft end of the forward and reverse motor (340). A rack (350) that meshes with the transmission gear (341) is inserted into the insertion hole (312). A support plate (351) is welded to the front end of the rack (350). A double-hole sleeve (360) is hinged to the bottom middle part of the main rod (332). A double-hole sleeve (360) is hinged to the top rear end of the support plate (351). A folding rod (333) is hinged between the two double-hole sleeves (360).

9. A high-temperature resistant spring, manufactured using the high-temperature resistant spring manufacturing process described in claim 8, characterized in that: It is made by heating and curing carbon fiber bundles and thermosetting resin, and the shaped thermosetting carbon fiber bundles are gradually cured into hardened thermosetting carbon fiber bundles.

10. The high-temperature resistant spring according to claim 9, characterized in that: The shaped thermosetting carbon fiber bundles are heated to 60 to 65°C, and the hardened thermosetting carbon fiber bundles are heated to 120 to 125°C.

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