Integrated equipment for making graphite seals and its production process

Abstract

The invention relates to an integrated graphite seal making device and a making process thereof. The device comprises a rotary device, on which a plurality of forming mechanisms are rotatably arranged, the forming mechanisms comprising a forming die and a top support assembly, and a rotating assembly is also arranged on the rotating path of the forming mechanism; the forming die comprises a fixed seat arranged on the rotary device and a forming cylinder rotatably arranged on the fixed seat, a plurality of hole-making rods are fixedly connected to the bottom of the forming cylinder, and a pair of needle rows are also slidably arranged in the forming die; the top support assembly comprises a rotating sleeve rotatably arranged on the fixed seat, a top support rod is slidably arranged in the rotating sleeve, a top support cover is fixedly connected to the top surface of the top support rod, and a forming block is also fixedly arranged on the lower bottom surface of the top support cover; the rotating assembly is used for driving the calcined graphite seal to perform centrifugal rotation, thereby eliminating the step of adding fluoride salt to decompose into pores at high temperature, reducing production costs, and realizing uniform wrapping of the outer layer of the graphite seal blank by resin.

Description

Technical Field

[0001] The invention relates to the technical field of graphite processing, in particular to integrated equipment for making graphite seals and a making process thereof. Background Art

[0002] As a material with stable properties, graphite is widely used in refractory materials, conductive materials, wear-resistant lubricating materials, etc. It has the advantages of good stability, corrosion resistance, and not easy to react with acids, alkalis and other agents.

[0003] A Chinese invention patent with publication number CN112248615A discloses a graphite seal forming device, which forms a dense bottom seal blank for engraving by using a forming device in cooperation with a first pressing device, and then forms an upper seal body formed of a graphite raw material mixture containing fluoride salts through a second pressing device on the basis of the bottom seal blank, and forms a material channel in the seal body, and then in the graphitization process, the fluoride salt decomposes to form channels in the seal body, and finally resin particles are added into the channel, and heated so that the resin particles form a protective layer on the surface of the graphite seal blank along the channel.

[0004] However, the inventors found that the above invention utilizes fluoride salt to decompose at high temperature to form channels in the graphite seal, which is a cumbersome operation. The fluoride salt is decomposed under heat to form channels, which is uncertain. It cannot guarantee that the resin particles can be evenly and completely wrapped in the surface of the graphite seal. In addition, the use of fluoride salt to form a large number of channels will also affect the performance of the graphite. Therefore, in view of the above problems, the present invention designs an integrated graphite seal production device and a production process thereof. Summary of the invention

[0005] The design purpose of the present invention is to provide an integrated graphite seal making device. The forming mold cooperates with the top pressure to form the input graphite raw material into a graphite seal blank with a hole and a pinhole connected inside. The top support component assists the forming mold to form the graphite raw material and drives the formed graphite blank to be ejected outward. The bottom of the graphite seal blank is formed into a transmission ramp under the action of the forming block. The transmission ramp is connected with each hole. Resin particles are input into each hole through the transmission ramp. The rotating component drives the resin particles to perform centrifugal rotation and melts the resin particles by heating. The molten resin flows outward through the pinhole in the hole and is evenly wrapped on the outer layer of the graphite seal blank. By pre-reserving the transmission ramp, the hole and the pinhole when the graphite seal is formed, the step of adding fluoride salt to decompose into the hole at high temperature is omitted, the preparation steps are simplified, the production cost is reduced, and the resin can be evenly wrapped on the outer layer of the graphite seal blank without affecting the performance of the graphite seal itself.

[0006] In view of the above technical problems, the technical solutions adopted by the present invention are as follows:

[0007] An integrated graphite seal making device comprises a rotating device, on which a plurality of forming mechanisms are rotatably arranged, wherein the forming mechanisms comprise a forming die and a supporting assembly, and a rotating assembly is further arranged on the rotating path of the forming mechanism;

[0008] The molding die comprises a fixed seat arranged on the rotating device and a molding cylinder rotatably arranged on the fixed seat, a plurality of hole-making rods are fixedly connected to the bottom of the molding cylinder, and a pair of needle rows are slidably arranged in the molding die;

[0009] The support assembly is used to support the bottom of the forming mold and prefabricate the transmission ramp during graphite forming, including a rotating sleeve rotatably arranged on the fixed seat, a support rod slidably arranged in the rotating sleeve, a support cover is fixedly connected to the top surface of the support rod, and a forming block is also fixedly arranged on the lower bottom surface of the support cover;

[0010] The rotating assembly is used to drive the baked graphite stamp to rotate centrifugally, and the resin enters the prefabricated channel of the hole-making rod from the transmission ramp and wraps the surface of the graphite stamp through the pinholes pre-pierced by the needle row.

[0011] As a preference, a pair of resin molding rings are slidably disposed in the molding cylinder, and an extension rod is disposed on the top support rod and fixedly connected to the bottom end surface of the resin molding ring.

[0012] Preferably, a guide ring is fixedly connected to one side of the top support rod, pulleys are arranged on the upper and lower inner walls of the guide ring, and a matching guide track is arranged on the moving path of the guide ring.

[0013] Preferably, the guide track comprises a stabilizing section, a flipping section and a resetting section.

[0014] As a preference, the bottom end surface of the molding block is also fixedly connected with a resin input pipeline.

[0015] Preferably, the rotating assembly includes a base and a cylinder a arranged on the base, the output end of the cylinder a is used to push the rotating motor to slide on the base, a limiting convex strip is arranged on the outer wall of the resin molding ring, the output end of the rotating motor is fixedly connected to a rotating cylinder, and a limiting groove matching the limiting convex strip is arranged on the inner wall of the rotating cylinder.

[0016] As a preference, a heating gun is further provided on the front side of the base below the resin molding ring.

[0017] As a preferred embodiment, a cylinder b and a cylinder c cooperating with the forming mechanism are fixedly arranged in sequence on the rotating path of the rotating device, the output end of the cylinder b is fixedly connected with a conical top pressure block, and the output end of the cylinder c is fixedly connected with a circular top pressure block.

[0018] As another preferred embodiment, cylinders d and e are fixedly arranged on both sides of the needle row rotation path, and the cylinders d and e are used to drive the needle row to reset and demold, and a supporting slide groove is also arranged below the rotating device.

[0019] Another design objective of the present invention is to provide a graphite seal forming and manufacturing process, and the technical solution is as follows:

[0020] Step 1, a primary molding process, the molding mechanism stops at the primary molding station, the graphite raw material is input into the molding cylinder, and the cylinder b above the molding cylinder pushes the conical top pressing block downward to perform a primary molding top pressing on the graphite raw material;

[0021] Step 2, secondary molding process, the molding mechanism described in step 1 continues to move and stops at the secondary molding station, the graphite raw material is input into the molding cylinder again, and the cylinder c above the molding cylinder pushes the circular top pressing block downward to perform secondary overall molding and top pressing on the graphite raw material;

[0022] Step 3, the pin row demoulding process, the molding mechanism described in step 2 continues to move and stops at the pin row demoulding station, and the cylinder d and the cylinder e drive the pin row to translate outward and separate from the inner wall of the molding cylinder;

[0023] Step 4, a top support flipping process, the molding mechanism described in step 3 continues to move and stops at the top support flipping station, the flipping section of the guide track guides the molding mechanism to flip outward, and at the same time, the top support rod pushes the graphite stamp in the molding cylinder outward under the guidance of the flipping section and is taken out manually;

[0024] Step 5, graphite roasting process, the graphite seal taken out in step 4 is roasted in a roasting chamber, the roasting temperature is 400-500° C., and the roasting time is 15-20 minutes;

[0025] Step six, the rotation wrapping process, the graphite seal that has been calcined in step five is put into the overturned forming cylinder again, the tree branch particles are input into the graphite seal through the resin input pipe, the cylinder a of the rotating assembly pushes the rotating cylinder to approach the resin forming ring and complete the engagement, the rotating motor drives the resin forming ring and the graphite seal to rotate, the heating gun under the resin forming ring heats the resin particles, and the molten resin passes through the pre-formed channel of the hole-making rod and the pinholes pre-pierced by the needle row to centrifugally rotate and wrap the surface of the graphite seal.

[0026] Beneficial effects of the present invention:

[0027] 1. In the present invention, when the graphite raw material is preformed, a transmission ramp, a hole and a pin row are reserved by a mold, and the transmission ramp and the hole, and the hole and the pin row are interconnected (such as Figure 6 As shown in the figure, resin particles are input into each channel through a transmission ramp, and the rotating component drives the resin particles to perform centrifugal rotation and melts the resin particles by heating. The molten resin flows out through the pinholes in the channel and is evenly wrapped around the outer layer of the graphite seal blank, eliminating the step of adding fluoride salt to decompose into channels at high temperature, simplifying the preparation steps, reducing the production cost, and achieving the uniform wrapping of the outer layer of the graphite seal blank by the resin without affecting the performance of the graphite seal itself.

[0028] 2. The bottom blank and the upper hand grip of the graphite seal used for engraving are directly formed by a forming mold, which eliminates the disadvantages of the prior art of pressing and forming the bottom blank and the hand grip in two steps and using two raw materials of different components. When the graphite raw material is pressed and formed, the graphite raw material is pressed by a conical pressing block. This design makes the inside of the graphite more compact (such as Figure 7 As shown), the tightness of the graphite stamp is improved.

[0029] In summary, the integrated graphite seal making equipment has the advantages of easy operation and stable performance and strength of graphite seals, and is particularly suitable for the field of graphite processing technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0031] Figure 1 A schematic diagram of the structure of an integrated equipment for making graphite seals;

[0032] Figure 2 It is a top view structural diagram of the integrated equipment for making graphite seals;

[0033] Figure 3 It is a structural schematic diagram of the forming mechanism;

[0034] Figure 4 It is a bottom view structural schematic diagram of the forming mechanism;

[0035] Figure 5 It is a schematic diagram of the cross-sectional structure of the forming mold;

[0036] Figure 6 Schematic diagram of the connection state of the transmission ramp, the hole and the pinhole;

[0037] Figure 7 It is a schematic diagram of the top pressing state of the conical top pressing block;

[0038] Figure 8 This is a process flow chart for the graphite seal molding and manufacturing process. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings. Embodiment 1

[0040] like Figures 1 to 7 As shown, an embodiment of the present invention provides an integrated graphite seal making device, including a rotating device 1, on which a plurality of forming mechanisms 2 are rotatably arranged, the forming mechanism 2 includes a forming mold 3 and a supporting assembly 4, and a rotating assembly 5 is also arranged on the rotating path of the forming mechanism 2;

[0041] The forming mold 3 includes a fixed seat 301 arranged on the rotating device 1 and a forming cylinder 302 rotatably arranged on the fixed seat 301. A plurality of hole-making rods 303 are fixedly connected to the bottom of the forming cylinder 302. A pair of needle rows 304 are also slidably arranged in the forming mold 3.

[0042] The supporting assembly 4 is used to support the bottom of the forming mold 3 and prefabricate the transmission ramp during graphite forming, and includes a rotating sleeve 401 rotatably arranged on the fixed seat 301, a supporting rod 402 is slidably arranged in the rotating sleeve 401, a supporting cover 403 is fixedly connected to the top surface of the supporting rod 402, and a forming block 404 is also fixedly arranged on the lower bottom surface of the supporting cover 403;

[0043] The rotating assembly 5 is used to drive the baked graphite stamp 101 to rotate centrifugally, and the resin enters the pre-formed channel of the hole-making rod 303 from the transmission ramp and wraps the surface of the graphite stamp 101 through the needle holes pre-pierced by the needle row 304.

[0044] Here, in the present invention, when the graphite raw material is preformed, a transmission ramp, a hole and a pin row are reserved by a mold, and the transmission ramp and the hole, and the hole and the pin row are connected to each other (such as Figure 6 As shown in the figure, the resin particles are input into each channel through the transmission ramp, the rotating component 5 drives the resin particles to perform centrifugal rotation and melts the resin particles by heating, and the molten resin flows out through the pinholes in the channel and is evenly wrapped around the outer layer of the graphite seal 101 blank, eliminating the step of adding fluoride salt to decompose into channels at high temperature, simplifying the preparation steps, reducing the production cost, and realizing the uniform wrapping of the outer layer of the graphite seal 101 blank by the resin without affecting the performance of the graphite seal itself.

[0045] See attached Figure 3 and attached Figure 4 Specifically, a pair of resin molding rings 305 are slidably arranged in the molding cylinder 302, and an extension rod 405 is arranged on the top support rod 402 and fixedly connected with the bottom end surface of the resin molding ring 305. When the top support rod 402 supports the graphite seal 101 outward, the resin molding ring 305 is synchronously driven to move outward through the extension rod 405, and the resin molding ring 305 is used for limiting the resin wrapping molding.

[0046] Refer to the attached Figure 1 To Attachment Figure 4 Specifically, a guide ring 406 is fixedly connected to one side of the top support rod 402, and pulleys 407 are provided on the upper and lower inner walls of the guide ring 406. A matching guide track 408 is also provided on the moving path of the guide ring 406. The upper and lower inner walls of the guide ring 406 are provided with pulleys 407. By providing the pulleys 407, the guide ring 406 can move smoothly on the guide track 408, thereby reducing the friction during movement.

[0047] Refer to the attached Figure 2 Specifically, the guide rail 408 includes a stabilizing section 409, a flipping section 410 and a resetting section 411. The stabilizing section 409 is used to guide and maintain the forming mechanism 2 in a vertical state, the flipping section 410 is used to guide the forming mechanism 2 to flip outward, and the resetting section 411 is used to guide the forming mechanism 2 to reset to a vertical state.

[0048] Refer to the attached Figure 3 Specifically, the bottom end surface of the forming block 404 is also fixedly connected with a resin input pipe 412, and the resin input pipe 412 is used to transfer resin particles to the inside of the graphite stamp 101 blank.

[0049] Refer to the attached Figure 1 and attached Figure 2 Specifically, the rotating component 5 includes a base 501 and a cylinder a502 arranged on the base 501. The output end of the cylinder a502 is used to push the rotating motor 503 to slide on the base 501. A limiting convex strip is arranged on the outer wall of the resin molding ring 305. The output end of the rotating motor 503 is fixedly connected with the rotating cylinder 504. A limiting groove matching the limiting convex strip is arranged on the inner wall of the rotating cylinder 504. The cylinder a502 pushes the rotating cylinder 504 to engage with the resin molding ring 305, and realizes centrifugal rotation under the rotation of the rotating motor 503.

[0050] Refer to the attached Figure 1 Specifically, a heating gun 505 is provided on the front side of the base 501 below the resin molding ring 305. The heating gun 505 is used to heat and melt the resin particles inside when the rotating assembly 5 drives the graphite stamp 101 to rotate.

[0051] Refer to the attached Figure 1 and attached Figure 7 Specifically, a cylinder b201 and a cylinder c202 cooperating with the forming mechanism 2 are fixedly arranged in sequence on the rotating path of the rotating device 1, a conical top pressure block 203 is fixedly connected to the output end of the cylinder b201, and a circular top pressure block 204 is fixedly connected to the output end of the cylinder c202. The conical top pressure block 203 first compacts the graphite raw material in the forming cylinder 302, and the circular top pressure block 204 presses and forms the graphite raw material as a whole.

[0052] It should be noted that the bottom blank and the upper hand grip of the graphite stamp 101 of the present invention are directly formed by a forming mold, which eliminates the disadvantages of the prior art of pressing and forming the bottom blank and the hand grip in two steps and using two raw materials with different components. When the graphite raw material is pressed and formed, the graphite raw material is pressed by the conical pressing block 203. This design makes the inside of the graphite more compact (such as Figure 7 As shown), the tightness of the graphite stamp is improved.

[0053] Refer to the attached Figure 1 and attached Figure 2 Specifically, cylinder d205 and cylinder e206 are fixedly arranged on both sides of the rotating path of the needle row 304. Cylinder d205 and cylinder e206 are used to drive the needle row 304 to reset and demold. A supporting groove 102 is also arranged under the rotating device 1. By setting the supporting groove 102, the stable support of the rotating device 1 during rotation can be guaranteed.

[0054] When the device of the present invention is working, the graphite raw material is input into the forming cylinder 302, and the cylinder b201 pushes the conical pressing block 203 to perform the first pressing on the graphite raw material, and then the cylinder c202 pushes the circular pressing block 204 to perform the second pressing on the graphite raw material after the first pressing. The formed graphite stamp is then driven by the cylinder d205 and the cylinder e206 to translate the needle row 304 outward and separate from the inner wall of the forming cylinder 302. Then, the guide ring 406 guides the shaping mechanism 2 to flip outward under the action of the flip section 410 of the guide track 408, and at the same time, the graphite stamp 101 and the resin molding ring 305 are synchronously pushed out of the forming cylinder 302 through the supporting rod 402, and the formed graphite stamp blank is taken out and transferred to the baking chamber. The graphite stamp 101 is baked in the mold 2 and the baked graphite stamp 101 is put into the molding mechanism 2 turned outward again. The resin particles are input into the graphite stamp 101 through the resin input pipe 412. The resin particles enter each channel through the transmission ramp. The rotating component 5 drives the resin particles to rotate centrifugally and melt the resin particles by heating with the heating gun 505. The molten resin flows out through the pinholes in the channel and is evenly wrapped around the outer layer of the graphite stamp blank during the rotation process. After the resin wrapping is cured, the guide ring 406 is reset to a vertical state under the action of the reset section 411 of the guide track 408. The operator takes out the wrapped graphite stamp 101 for unified collection, and the above process is repeated in sequence. Embodiment 2

[0055] As attached Figure 8 As shown, a graphite seal forming and manufacturing process includes the following production steps:

[0056] Step 1, primary molding process, the molding mechanism 2 stops at the primary molding station, the graphite raw material is input into the molding cylinder 302, and the cylinder b201 above the molding cylinder 302 pushes the conical top pressing block 203 downward to perform primary molding top pressing on the graphite raw material;

[0057] Step 2, secondary molding process, the molding mechanism 2 in step 1 continues to move and stops at the secondary molding station, the graphite raw material is input into the molding cylinder 302 again, and the cylinder c202 above the molding cylinder 302 pushes the circular top pressing block 204 downward to perform secondary overall molding and top pressing on the graphite raw material;

[0058] Step 3, the needle row demoulding process, the molding mechanism 2 described in step 2 continues to move and stops at the needle row demoulding station, and the cylinder d205 and the cylinder e206 drive the needle row 304 to translate outward and separate from the inner wall of the molding cylinder 302;

[0059] Step 4, a top-supporting and flipping process, in which the molding mechanism 2 described in step 3 continues to move and stops at the top-supporting and flipping station, and the flipping section 410 of the guide track 408 guides the molding mechanism 2 to flip outwards, and at the same time, the top-supporting rod 402 pushes out the graphite stamp 101 in the molding cylinder 302 under the guidance of the flipping section 410 and is taken out manually;

[0060] Step 5, an impregnation and roasting process, the graphite seal 101 taken out in step 4 is roasted in a roasting chamber, the roasting temperature is 400-500° C., and the roasting time is 15-20 minutes;

[0061] Step six, the rotation wrapping process, the graphite stamp 101 that has been calcined in step five is put into the overturned forming cylinder 302 again, the tree branch particles are input into the graphite stamp 101 through the resin input pipe 412, the cylinder a502 of the rotating component 5 pushes the rotating cylinder 504 to approach the resin forming ring 305 and complete the engagement, the rotating motor 503 drives the resin forming ring 305 and the graphite stamp 101 to rotate, the heating gun 505 under the resin forming ring 305 heats the resin particles, and the molten resin passes through the pre-formed channel of the hole-making rod 303 and the needle holes pre-pierced by the needle row 304 to centrifugally rotate and wrap the surface of the graphite stamp 101.

[0062] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "front and back", "left and right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the invention.

[0063] Of course, in the present technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0064] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art under the technical guidance of the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An integrated graphite seal making device, comprising a rotating device (1), characterized in that: A plurality of forming mechanisms (2) are rotatably arranged on the rotary device (1), the forming mechanism (2) comprising a forming die (3) and a supporting assembly (4), and a rotating assembly (5) is also arranged on the rotation path of the forming mechanism (2); The molding die (3) comprises a fixed seat (301) arranged on the rotating device (1) and a molding cylinder (302) rotatably arranged on the fixed seat (301); a plurality of hole-making rods (303) are fixedly connected to the bottom of the molding cylinder (302); and a pair of needle rows (304) are slidably arranged in the molding die (3); The support assembly (4) is used to support the bottom of the forming mold (3) and prefabricate a transmission ramp during graphite forming, and comprises a rotating sleeve (401) rotatably arranged on the fixed seat (301), a support rod (402) being slidably arranged in the rotating sleeve (401), a support cover (403) being fixedly connected to the top surface of the support rod (402), and a forming block (404) being fixedly arranged on the bottom surface of the support cover (403); The rotating assembly (5) is used to drive the calcined graphite stamp (101) to rotate centrifugally, and the resin enters the preformed channel of the hole-making rod (303) from the transmission ramp and wraps the surface of the graphite stamp (101) through the needle holes pre-pierced by the needle row (304); A pair of resin molding rings (305) are also slidably disposed in the molding cylinder (302), and an extension rod (405) is disposed on the top support rod (402) and is fixedly connected to the bottom end surface of the resin molding ring (305); The rotating assembly (5) comprises a base (501) and a cylinder a (502) arranged on the base (501); the output end of the cylinder a (502) is used to push the rotating motor (503) to slide on the base (501); a limiting convex strip is arranged on the outer wall of the resin molding ring (305); the output end of the rotating motor (503) is fixedly connected to a rotating cylinder (504); and a limiting groove matching the limiting convex strip is arranged on the inner wall of the rotating cylinder (504).

2. The integrated graphite seal making device according to claim 1, characterized in that: A guide ring (406) is also fixedly connected to one side of the top support rod (402), pulleys (407) are provided on the upper and lower inner walls of the guide ring (406), and a matching guide track (408) is also provided on the moving path of the guide ring (406).

3. The integrated graphite seal making device according to claim 2, characterized in that: The guide track (408) comprises a stabilizing section (409), a flipping section (410) and a resetting section (411).

4. The integrated graphite seal making device according to claim 3, characterized in that: The bottom end surface of the molding block (404) is also fixedly connected to a resin input pipe (412).

5. The integrated graphite seal making device according to claim 4, characterized in that: A heating gun (505) is also provided on the front side of the base (501) below the resin molding ring (305).

6. The integrated graphite seal making device according to claim 5, characterized in that: A cylinder b (201) and a cylinder c (202) that cooperate with the forming mechanism (2) are fixedly arranged in sequence on the rotating path of the rotating device (1); the output end of the cylinder b (201) is fixedly connected to a conical top pressure block (203), and the output end of the cylinder c (202) is fixedly connected to a circular top pressure block (204).

7. The integrated graphite seal making device according to claim 6, characterized in that: A cylinder d (205) and a cylinder e (206) are fixedly arranged on both sides of the rotation path of the needle row (304), and the cylinder d (205) and the cylinder e (206) are used to drive the needle row (304) to reset and demould. A supporting slide groove (102) is also arranged below the rotating device (1).

8. A process for making a seal using the integrated graphite seal making equipment according to claim 7, characterized in that: The production process includes the following steps: Step 1, a primary molding process, the molding mechanism (2) stops at the primary molding station, the graphite raw material is input into the molding cylinder (302), and the cylinder b (201) above the molding cylinder (302) pushes the conical pressing block (203) downward to perform primary molding pressing on the graphite raw material; Step 2, secondary molding process, the molding mechanism (2) described in step 1 continues to move and stops at the secondary molding station, the graphite raw material is input into the molding cylinder (302) again, and the cylinder c (202) above the molding cylinder (302) pushes the circular pressing block (204) downward to perform secondary overall molding pressing on the graphite raw material; Step 3, the needle row demoulding process, the molding mechanism (2) described in step 2 continues to move and stops at the needle row demoulding station, and the cylinder d (205) and the cylinder e (206) drive the needle row (304) to move outward and separate from the inner wall of the molding cylinder (302); Step 4, a support and flipping process, the molding mechanism (2) described in step 3 continues to move and stops at the support and flipping station, the flipping section (410) of the guide track (408) guides the molding mechanism (2) to flip outward, and at the same time, the support rod (402) pushes the graphite stamp (101) in the molding cylinder (302) outward under the guidance of the flipping section (410) and is taken out manually; Step 5, an impregnation and roasting process, wherein the graphite stamp (101) taken out in step 4 is roasted in a roasting chamber at a roasting temperature of 400-500° C. for 15-20 minutes; Step 6, a rotation wrapping process, the graphite stamp (101) that has been calcined in step 5 is again placed in the overturned molding cylinder (302), the tree branch particles are input into the graphite stamp (101) through the resin input pipe (412), the cylinder a (502) of the rotating assembly (5) pushes the rotating cylinder (504) to approach the resin molding ring (305) and complete the engagement, the rotating motor (503) drives the resin molding ring (305) and the graphite stamp (101) to rotate, the heating gun (505) under the resin molding ring (305) heats the resin particles, and the molten resin passes through the pre-formed channel of the hole making rod (303) and the pre-pierced needle holes of the needle row (304) to centrifugally rotate and wrap the surface of the graphite stamp (101).

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