A carbon-carbon heater blank forming device and its processing technology

Abstract

The invention discloses a carbon-carbon heater blank forming device and a processing technology thereof, which belongs to the technical field of carbon-carbon heater manufacturing, and comprises the following steps: step 1: blank forming: adopting a pure mesh structure and a special forming device, firstly installing a forming mold, putting sulfuric acid paper on the mold, and winding carbon cloth, carbon filament, mesh cloth in sequence, then brushing resin on the mesh cloth, fixing it with carbon filament, and repeating the arrangement in the above manner until the outer diameter of the blank is larger than the product diameter by 1‑2 mm, and then winding 1‑10 mm carbon cloth, winding carbon filament every 1‑5 layers in the middle, and finally performing acupuncture; step 2: blank curing: curing temperature is 100‑300° C., and curing time is 1‑10 h; step 3: degumming: temperature is 500‑2000° C., time is 2‑20 h, and heating rate is 10‑100° C. / h; the invention is used to solve the problems of insufficient heat generation and resistance uniformity of traditional heater blanks and low blank manufacturing efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of carbon-carbon heater manufacturing, and in particular relates to a carbon-carbon heater blank forming device and a processing technology thereof. Background Art

[0002] In modern industrial fields, carbon-carbon heaters play a vital role, especially in the photovoltaic industry and semiconductor manufacturing, where they are widely used in the growth process of single crystal silicon. These heaters work in conjunction with the main heater to accurately control the temperature of the thermal field to meet the precise temperature conditions required for melting raw materials and crystal growth.

[0003] However, the traditional carbon-carbon heater manufacturing method has some limitations. For example, they usually adopt a needle-punched structure, which often has unsatisfactory heating performance and resistance uniformity in actual use. Moreover, heaters with this structure also have problems such as low forming efficiency during the manufacturing process, which not only affects the production efficiency, but also limits the further improvement of the heater performance. Therefore, a heater manufacturing process with better forming quality is proposed, and the heater blank is processed by a blank forming equipment to ensure the quality of the blank. Summary of the invention

[0004] In view of the above problems, the present invention provides a carbon-carbon heater blank forming device and a processing technology thereof, which are used to solve the problems of insufficient heat generation and resistance uniformity of traditional heater blanks and low blank manufacturing efficiency.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A carbon-carbon heater blank processing process comprises the following steps:

[0007] Step 1: Blank forming: adopt pure mesh structure and special forming device, first install the forming mold, put sulfuric acid paper on the mold, and wind carbon cloth, carbon filament, mesh cloth in turn, then brush resin on the mesh cloth, fix it with carbon filament, and repeat the above arrangement until the outer diameter of the blank is 1-2mm larger than the product diameter, then wind 1-10mm carbon cloth, wind carbon filament every 1-5 layers in the middle, and finally perform acupuncture;

[0008] Step 2: green body curing: curing temperature 100-300°C, curing time 1-10h;

[0009] Step 3: Glue removal: temperature is 500-2000℃, duration is 2-20h, heating rate is 10-100℃ / h;

[0010] Step 4: CVI treatment interface layer 1: slowly increase the temperature by 5-30℃ / h, the highest temperature is 900-1100℃, and fill with natural gas and hydrogen, with natural gas accounting for 80-99% and gas volume of 1-100L / min;

[0011] Step 5: High temperature treatment: treatment temperature 1800-2400℃;

[0012] Step 6: CVI treatment: Maximum temperature 900-1300℃, natural gas and nitrogen, natural gas accounts for 80-99%, density after CVI is 0.7-1.2g / cm 3 ;

[0013] Step 7: PIP treatment: Impregnation process: Use asphalt for impregnation to form the second interface layer, pressure 0.1-2mpa, temperature 50-300℃, pressure maintenance 1-5h;

[0014] Carbonization process: maintain the temperature at 500℃-1200℃, slightly positive pressure or vacuum carbonization, for 5-30h;

[0015] Step 8: High temperature treatment and machining: the treatment temperature is 1800-3000℃, and rough turning can be performed after high temperature;

[0016] Density reaches 1.5-1.8g / cm 3 After finishing.

[0017] As a further improvement of the above scheme, multiple rounds of processing can be performed again after step 6 and step 7 are completed;

[0018] When multiple rounds of PIP treatment are carried out, the pressure in the first half of the impregnation process is 0.1 MPa-20 MPa, and the pressure in the second half is 2-50 MPa, the temperature is 50-300°C, and the pressure is maintained for 2-20 hours according to the number of treatments to be carried out; during the carbonization process: the temperature is 500°C-1200°C, slightly positive pressure or vacuum carbonization, and the duration is 5-30 hours.

[0019] The present application also provides a carbon-carbon heater blank forming device, which is used to complete the blank forming step of the carbon-carbon heater blank processing technology.

[0020] The invention comprises: a clamping member for mounting the mold, the clamping member is rotatably arranged, a movable seat is connected to the rotating shaft of the clamping member, a pressure rod is movably arranged on the movable seat, the pressure rod clamps the material to be wound on the mold, and a fixed component which moves synchronously and clamps and holds the wound material on the clamping member is arranged around the clamping member, and a distance measuring component for measuring the movable position of the fixed component is arranged on one side of the fixed component;

[0021] A spraying part for spraying resin on the wound material is also arranged above the clamping part.

[0022] As a further improvement of the above solution, the solid component includes a solid seat, a flexible pressure piece is arranged on the inner concave surface of the solid seat, and the flexible pressure piece is connected to the air source;

[0023] A heating element is also arranged inside the solid mold base; a receiving groove for catching overflowing resin is arranged at the bottom of the solid mold base, and a driving component for driving its synchronous movement is connected to the solid mold base.

[0024] As a further improvement of the above solution, a slide groove is provided in the fixed seat, a slide seat is slidably provided in the slide groove, and a pressure roller for smoothing the material on the mold is rotatably provided on the slide seat;

[0025] A thumbwheel is rotatably arranged on the slide slot, a driving source for driving the thumbwheel to move is arranged between the thumbwheel and the slide slot, and a connecting rod is arranged between the thumbwheel and the slide seat.

[0026] As a further improvement of the above solution, a locking rod is rotatably provided on the slide slot, a first spring is provided between the locking rod and the slide slot, the first spring pulls the locking rod to contact the thumbwheel, and a limiting groove that can be mutually locked with the connecting rod is also provided on the thumbwheel;

[0027] The connecting rod extends outward to the outside of the sliding groove, the fixed seat is slidably arranged above the platform plate, and a stop pin which can contact the extending section of the connecting rod to separate the connecting rod and the limiting groove is fixedly arranged on the platform plate.

[0028] As a further improvement of the above solution, a rotating sleeve is rotatably provided on the top of the movable seat, and a pull rope is fixedly connected between the rotating sleeve and the pressure rod;

[0029] A first mounting groove is arranged on the top of the movable seat, a mounting seat slidingly arranged with the first mounting groove is fixedly arranged on the bottom of the pressure rod, and a second spring is arranged between the mounting seat and the side wall of the first mounting groove to pull the mounting seat to move away from the rotating sleeve.

[0030] As a further improvement of the above solution, a guide pin coaxially rotating with the rotating axis of the clamping member is arranged above the rotating sleeve, and an inclined groove capable of contacting and cooperating with the guide pin is arranged on the rotating sleeve;

[0031] The movable seat rotates coaxially with the rotating shaft of the clamping member, and a first driving source for driving the movable seat to slide up and down on the rotating shaft of the clamping member is also arranged at the bottom of the movable seat.

[0032] As a further improvement of the above solution, the movable seat is provided with symmetrically arranged second mounting grooves, and a spring piece for pushing the rotating sleeve to rotate and reset is fixedly provided on the bottom wall of one of the second mounting grooves;

[0033] An eccentric wheel is rotatably arranged on the bottom wall of another second mounting groove, and a torsion spring is arranged on the eccentric wheel to drive it to continuously contact and tighten with the side wall of the rotating sleeve. A push rod is also elastically and movably arranged on the movable seat, which passes through the second mounting groove and the bottom surface of the movable seat, and the top of the push rod is a cone that can push the eccentric wheel and the rotating sleeve to separate.

[0034] As a further improvement of the above solution, a head for pressing the clamping member outward is arranged in the clamping member, the rotating shaft of the head is sleeved in the rotating shaft of the clamping member, and the rotating shaft of the clamping member and the supporting frame are arranged to rotate with each other;

[0035] The rotating shaft of the plug is also connected to a second driving source for driving the plug to rotate, and a third driving source for driving the plug to move up and down along the axis of the clamping member.

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] 1. The heater made by adopting the pure mesh tire structure manufacturing process has better heat generation and resistance uniformity than the traditional needle-punched blank heater, which ensures the quality and stability of crystal pulling; the use of this weaving structure solves the problem of mesh tire molding difficulties, so that the pure mesh tire structure heater can improve the processing efficiency while ensuring the quality.

[0038] 2. The whole heater blank is first made into a preliminary blank by winding the mold as a whole, and then the frame is made after a series of high-temperature, physical and chemical treatments. Compared with the traditional manufacturing process, it is easier to form, does not need to maintain the dimensional matching accuracy of each component, and is more efficient.

[0039] 3. By adopting a customized blank forming device, the materials in the blank processing process can be quickly wound, and because the materials of each part are different, after the material arrangement of each cycle is completed, the arranged materials can be solidified under the action of the solidification component, thereby ensuring the stability of the bonding between different materials and maintaining the material density of the blank, thereby improving the processing quality of the blank.

[0040] 4. Under the action of the pressure rod, the wound material can be clamped when winding the material, and because each layer of material is only wound once, it can be fixed under the clamping of the fixed seat after each winding of the material, and the pressure rod is withdrawn downward, so as to avoid the pressure rod affecting the arrangement state of the material when it is taken out, and it is also convenient for the material to be clamped and fixed each time, which is convenient for the arrangement of the second layer of material.

[0041] 5. Under the clamping of the solidifying seat, the stability of each layer of material can be maintained. At the same time, after each cycle of material arrangement, the curing effect of the resin can be accelerated by controlling the heating element to heat it. At the same time, air can be filled into the flexible pressure element to increase the clamping force of the blank, so that some empty spaces such as bubbles in the blank can be squeezed, thereby playing a role in solidifying the blank.

[0042] 6. The set pressure roller can squeeze and compact the blank material when clamping it. When the extrusion pressure continues to increase, the pressure roller can gradually shrink into the slide groove and keep it from rebounding after the locking rod hooks the limit groove until the locking rod and the stop pin are contacted and reset; during the movement of the fixing seat, the distance measuring component measures its moving position, which can measure the forming outer diameter of the formed blank on the one hand, and control the clamping force of the pressure rod on the material on the blank on the basis of the measured position. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0044] Figure 2 for Figure 1 Structural diagram of the middle A direction;

[0045] Figure 3 for Figure 1 A schematic diagram of the local enlarged structure at B in the middle;

[0046] Figure 4 for Figure 2 A schematic diagram of the local enlarged structure at C in the middle;

[0047] Figure 5 for Figure 2 A schematic diagram of the local enlarged structure at D in the middle;

[0048] Figure 6 for Figure 3 Schematic diagram of the local cross-sectional structure in the EE direction;

[0049] Figure 7 for Figure 3 Schematic diagram of the local enlarged structure at F in the middle.

[0050] In the figure: 10, clamping member; 11, movable seat; 111, first mounting groove; 112, second mounting groove; 12, pressure rod; 121, mounting seat; 13, platform plate; 131, stop pin; 14, spraying member; 15, solid component; 151, solid seat; 152, flexible pressure member; 153, heating member; 154, slide groove; 155, slide seat; 156, pressure roller; 157, dial wheel; 158, connecting rod; 159, locking rod; 1501, first spring; 1502, limit groove; 1503, connecting groove; 16, distance measuring component; 17, rotating sleeve; 171, inclined groove; 18, pull rope; 19, second spring; 20, guide pin; 21, eccentric wheel; 22, torsion spring; 23, push rod; 24, top head; 25, support frame; 26, spring piece. DETAILED DESCRIPTION

[0051] In order to enable those skilled in the art to better understand the technical solution, the present invention is described in detail below in conjunction with embodiments. The description in this section is only exemplary and explanatory and should not have any limiting effect on the scope of protection of the present invention.

[0052] The specific scheme of this embodiment is: a carbon-carbon heater blank processing process, comprising the following steps:

[0053] Step 1: Blank forming: adopt pure mesh structure and special forming device, first install the forming mold, put sulfuric acid paper on the mold, and wind carbon cloth, carbon filament, mesh cloth in turn, then brush resin on the mesh cloth, fix it with carbon filament, and repeat the above arrangement until the outer diameter of the blank is 1-2mm larger than the product diameter, then wind 1-10mm carbon cloth, wind carbon filament every 1-5 layers in the middle, and finally perform acupuncture;

[0054] Step 2: green body curing: curing temperature 100-300°C, curing time 1-10h;

[0055] Step 3: Glue removal: temperature is 500-2000℃, duration is 2-20h, heating rate is 10-100℃ / h;

[0056] Step 4: CVI treatment interface layer 1: slowly increase the temperature by 5-30℃ / h, the highest temperature is 900-1100℃, fill with natural gas and hydrogen, natural gas accounts for 80-99%, gas volume is 1-100L / min; the interface layer is the transition layer between the carbon fiber layer and the deposited carbon, which is used to protect the carbon fiber, protect the carbon fiber, improve the performance of the product, and improve the strength of the product through the interface layer;

[0057] Step 5: High temperature treatment: The treatment temperature is 1800-2400℃; the temperature needs to be strictly controlled, because too high a temperature will damage the fiber, and too low a temperature will not cause micro cracks to form in the carbon of the interface layer of CVI. After the micro cracks are formed, the subsequent densification effect of CVI can be improved, and the stress of the fiber can be released, thereby improving the strength;

[0058] Step 6: CVI treatment: The maximum temperature is 900-1300℃, natural gas and nitrogen are passed, natural gas accounts for 80-99%, forming a rough layer of carbon for subsequent graphitization, and the density after CVI is 0.7-1.2g / cm 3 ;

[0059] Step 7: PIP treatment: Impregnation process: Use asphalt for impregnation to form the second interface layer. The asphalt uses low-temperature asphalt or mesophase asphalt, high fluidity, and low carbon yield asphalt for the first impregnation. The first impregnation ensures the formation of the interface layer and the bonding of the CVI carbon and the asphalt carbon transition layer. The pressure is 0.1-2mpa, the temperature is 50-300℃, and the pressure is maintained for 1-5h;

[0060] Carbonization process: maintain the temperature at 500℃-1200℃, micro-positive pressure or vacuum carbonization, micro-positive pressure is the pressure within 1mpa, the duration is 5-30h; the second interface layer is between the deposited carbon and the asphalt carbon, the formation of the second interface layer can achieve a better transition, and the two carbons are better combined;

[0061] Step 8: High temperature treatment and machining: the treatment temperature is 1800-3000℃, and rough turning can be performed after high temperature;

[0062] Density reaches 1.5-1.8g / cm 3 After finishing;

[0063] During the use of the finished heater, asphalt PIP is performed again every 1-5 months to seal the surface, reduce silicon vapor corrosion, increase its lifespan, and prevent it from being used for too long, which may cause silicon to increase the resistance of the heater and make the product thinner.

[0064] As a preferred embodiment of the above embodiment, after step 6 and step 7 are completed, multiple rounds of processing can be performed again;

[0065] When multiple rounds of PIP treatment are carried out, the pressure of the first half of the treatment is 0.1 MPa-20 MPa, and the pressure of the second half is 2-50 MPa, the temperature is 50-300°C, and the pressure is maintained for 2-20 hours, depending on the number of treatments during the impregnation process. High-temperature asphalt or intermediate phase asphalt, high fluidity, and high carbon yield asphalt are used for impregnation; during the carbonization process: the temperature is 500°C-1200°C, micro-positive pressure or vacuum carbonization, the duration is 5-30 hours, and the micro-positive pressure also uses a pressure within 1 MPa.

[0066] In order to improve the manufacturing efficiency of the heater, the present application also provides a carbon-carbon heater blank forming device for completing the blank forming step of the carbon-carbon heater blank processing process, such as Figure 1-7 As shown, the specific solutions include:

[0067] The clamping member 10 used for installing the mold is an elastic clamping head. The clamping member 10 shrinks toward the middle under normal circumstances. The outer surface of the clamping member 10 is the clamping surface. When the mold is clamped, it is sleeved on the outer side of the clamping member 10. The clamping member 10 is rotatably arranged, such as Figure 1 As shown, a top head 24 for squeezing the clamping member 10 outward is provided in the clamping member 10, and the top head 24 is a truncated cone-shaped structure with a small lower end and a large upper end. The rotating shaft of the top head 24 is sleeved in the rotating shaft of the clamping member 10, and the rotating shaft of the clamping member 10 and the support frame 25 are arranged to rotate with each other; the rotating shaft of the top head 24 is also connected to a second driving source for driving its rotation, and the second driving source is specifically a set motor, and the output shaft of the motor is connected to the rotating shaft of the top head 24 through a reducer. During the rotation of the top head 24, the clamping member 10 is driven to rotate together, and a third driving source is also provided on the top head 24, and the third driving source is a set driving cylinder, and a transmission is set between the output shaft end of the driving cylinder and the rotating shaft of the top head 24, so that the up and down movement of the top head 24 can be controlled. When the top head 24 moves downward, it has an extrusion effect on the clamping member 10, and the clamping member will expand to the surroundings, thereby realizing the clamping effect on the mold.

[0068] The movable seat 11 is connected to the rotating axis of the clamping member 10, and a pressure rod 12 is movably arranged on the movable seat 11, and the pressure rod 12 is coated with resin; in addition, as another embodiment, in order to continuously keep the pressure rod 12 with resin, a brush for brushing the resin toward 12 can be arranged on one side of the pressure rod (not shown in the accompanying drawings), and the pressure rod 12 clamps the material to be wound on the mold. Specifically, each time the material is wound, the pressure rod 12 clamps the material on the mold or the material of the previous layer. In the process of winding the material, the movable seat 11 and the pressure rod 12 are driven to rotate synchronously by the clamping member 10, so as to complete the winding arrangement of one layer of material, which can prevent the material from detaching from the mold, and the clamping member 10 is provided with a synchronously movable fixed component 15 around it to clamp and hold the wound material on the clamping member 10. Specifically, the fixed component 15 includes a fixed seat 151, which is symmetrically arranged and in a "C" shape, and the fixed seat 151 is slidably arranged above the platform plate 13, such as Figure 2 ;

[0069] The solid seat 151 is connected to a driving component that drives its synchronous movement. Specifically, the driving component includes a driving disk that is arranged at the bottom of the solid seat 151 and synchronously drives the solid seat 151 to move. A spiral groove is arranged on the surface of the driving disk. The spiral groove and the bottom wall of the solid component 15 are arranged to slide against each other. The spiral disk is driven by a motor. Therefore, when the motor drives the driving disk to rotate, the solid seats 151 on both sides can be synchronously controlled to move toward the middle or to both sides. A distance measuring component for measuring the active position of the solid component 15 is arranged on one side of the solid component 15. 16. Specifically, the distance measuring component 16 is a distance sensor, which is mainly used to measure the distance of the fixed seat 151. A controller is provided on the support frame 25. The distance of the fixed seat 151 measured by the distance measuring component 16 will be transmitted to the controller for processing. One is used to determine the thickness of the blank formed, and the other is used to determine the amount of movement of the pressure rod 12 relative to the movable seat 11 during the process of clamping the material, so as to avoid bending, breaking, etc. of the pressure rod 12 during clamping, because when the thickness of the blank increases, the amount of movement of the pressure rod 12 needs to be changed synchronously;

[0070] A spraying part 14 for spraying resin on the wound material is also arranged above the clamping part 10. The spraying part 14 is specifically a spraying pipe connected to a delivery pump (not shown in the accompanying drawings) for delivering resin. The spraying part 14 is also connected to a lifting mechanism for driving it to move up and down, so as to reduce interference during the blank forming process.

[0071] like Figure 2 , 4 As shown in Figure 5, as a preferred embodiment of the above embodiment, a flexible pressure piece 152 is provided on the inner concave surface of the fixing seat 151. In this embodiment, the flexible pressure piece 152 is a flexible air bag, and the flexible pressure piece 152 is connected to the air source; a heating piece 153 is also provided inside the fixing seat 151; a connecting groove 1503 for catching the overflowing resin is provided at the bottom of the fixing seat 151. After completing a cycle of material arrangement, a cycle refers to the operation of continuously fixing the carbon cloth, carbon filament, mesh tire cloth, and resin carbon filament in sequence, and finally clamping the blank through the fixing seat 151, and then inflating the flexible pressure piece 152 to complete continuous pressure, and by energizing the heating piece 153 for heating, the curing of the resin is accelerated, and some of the excess resin squeezed out falls on the connecting groove 1503.

[0072] The fixed seat 151 is provided with a slide groove 154, and a slide seat 155 is slidably provided in the slide groove 154. Figure 5 A pressing roller 156 for smoothing the material on the mold is rotatably arranged on the slide 155, and four pressing rollers 156 are symmetrically arranged, with two being arranged on each slide 155;

[0073] A dial wheel 157 is rotatably arranged on the slide groove 154, and a driving source for driving the dial wheel 157 to move is arranged between the dial wheel 157 and the slide groove 154. In the present embodiment, the driving source is a torsion spring, and a connecting rod 158 is arranged between the dial wheel 157 and the slide seat 155. When the fixing seat 151 moves toward the blank, the slide seat 155 will first contact the surface of the blank, and under the action of the torsion spring installed on the dial wheel 157, the connecting rod 158 can play an elastic pressing role so that the material on the blank can be squeezed and smoothed.

[0074] As a preferred embodiment of the above embodiment, a locking rod 159 is rotatably provided on the slide slot 154, and the end of the locking rod 159 is hook-shaped. A first spring 1501 is provided between the locking rod 159 and the slide slot 154. The first spring 1501 pulls the locking rod 159 to contact the thumbwheel 157, and the thumbwheel 157 is also provided with a limiting groove 1502 that can be mutually locked with the connecting rod 158. When the thumbwheel 157 is rotated under the pressure of the connecting rod 158 until the locking rod 159 and the limiting groove 1502 are mutually hooked, the thumbwheel 157 can be prevented from reversely pushing the connecting rod 158 and the pressure roller under the action of the torsion spring. 156 moves, causing the pressure roller 156 to lose its squeezing effect on the surface of the blank; the connecting rod 158 extends outward to the outside of the slide groove 154, and the platform plate 13 is fixedly provided with a stop pin 131 which can contact with the extended section of the connecting rod 158 to make the connecting rod 158 and the limiting groove 1502 disengage from each other. Specifically, when the fixed seat 151 moves to both sides, after the connecting rod 158 hits the stop pin 131, the locking rod 159 can lose the hooking effect on the limiting groove 1502, so that the dial 157 is reset under the action of the torsion spring, so as to drive the pressure roller 156 to extend from the inner concave surface of the fixed seat 151.

[0075] like Figure 1 , 3 As shown in FIGS. 6 and 7 , as a preferred embodiment of the above-mentioned embodiment, a rotating sleeve 17 is rotatably provided on the top of the movable seat 11, and a pull rope 18 is fixedly connected between the rotating sleeve 17 and the pressure rod 12;

[0076] A first mounting groove 111 is provided at the top of the movable seat 11, a mounting seat 121 which is slidably arranged with the first mounting groove 111 is fixedly provided at the bottom of the pressure rod 12, and a second spring 19 which pulls the mounting seat 121 to move in a direction away from the rotating sleeve 17 is provided between the mounting seat 121 and the side wall of the first mounting groove 111; a guide pin 20 which rotates coaxially with the rotating axis of the clamping member 10 is provided above the rotating sleeve 17, and an inclined groove 171 which can contact and cooperate with the guide pin 20 is provided on the rotating sleeve 17. In this embodiment, the guide pin 20 is fixedly provided on the rotating axis of the top head 24, and a slide groove which facilitates the movement of the guide pin 20 is provided on the rotating axis of the clamping member 10, so that the top head 24 can squeeze the clamping member 10 up and down. During the movement, the guide pin 20 is driven to move up and down in the slide groove to avoid interference. In addition, the guide pin 20 can also be set on the rotating shaft of the clamping member 10. When the rotating sleeve 17 moves upward relative to the guide pin 20, the inclined groove 171 will rotate on the movable seat 11 under the interaction of the guide pin 20 and the inclined groove 171, thereby pulling the pull rope 18 and the pressure rod 12 to move, so as to facilitate the pressure rod 12 to clamp the material for winding. In this embodiment, the guide pin 20 is set on the rotating shaft of the top head 24. During the process of the top head 24 squeezing the clamping member 10 to clamp the mold, the guide pin 20 moves downward to squeeze the inclined groove 171, thereby synchronously allowing the pressure rod 12 to clamp the material.

[0077] As a preferred mode of the above-mentioned embodiment, the movable seat 11 rotates coaxially with the rotating axis of the clamping member 10, and a first driving source for driving the movable seat 11 to slide up and down on the rotating axis of the clamping member 10 is also provided at the bottom of the movable seat 11. In this embodiment, the first driving source is an electric push rod arranged on the support frame 25. The signal connection between the electric push rod and the controller is achieved. The distance position of the fixed seat 151 is detected by the distance measuring component 16, and the controller controls the electric push rod to extend a corresponding length after processing. In this way, the contact position between the guide pin 20 and the inclined groove 171 can be adjusted, so that the amount of movement of the rotating sleeve 17 pulling the pressure rod 12 is different, so as to adapt to the needs of the blank winding material under different thickness conditions and avoid bending and breaking of the pressure rod 12.

[0078] As a preferred embodiment of the above embodiment, the movable seat 11 is provided with symmetrically arranged second mounting grooves 112, and a spring piece 26 for pushing the rotating sleeve 17 to rotate and reset is fixedly provided on the bottom wall of one of the second mounting grooves 112;

[0079] An eccentric wheel 21 is rotatably arranged on the bottom wall of another second mounting groove 112, and a torsion spring 22 is arranged on the eccentric wheel 21 to drive it to continuously contact and tighten with the side wall of the rotating sleeve 17. A push rod 23 that penetrates the second mounting groove 112 and the bottom surface of the movable seat 11 is also elastically and movably arranged on the movable seat 11, and the top of the push rod 23 is a cone that can push the eccentric wheel 21 and the rotating sleeve 17 to separate, such as Figure 7 As shown, a spring is provided between the push rod 23 and the movable seat 11 to push the push rod 23 downward. Specifically, during use, the torsion spring 22 drives the eccentric wheel 21 to contact and support the rotating sleeve 17, thereby preventing the rotating sleeve 17 from rotating in the opposite direction, so that the pressing rod 12 is pulled to the required position and then fixed. In this way, after a layer of material is fixed, the fixing seat 151 first clamps the blank and fixes it, and the movable seat 11 is driven downward by the electric push rod connected to the movable seat 11, so that the pressing rod 12 is smoothly withdrawn downward from the blank. In this way, under the clamping of the fixed seat 151, the pressure rod 12 can be prevented from moving downward and damaging the material. When the pressure rod 12 is completely withdrawn from the blank, the push rod 23 will contact the support frame 25, thereby pressing the eccentric wheel 21 upward. Under the push of the cone section, the push rod 23 causes the eccentric wheel 21 and the rotating sleeve 17 to separate from each other. Therefore, under the push of the spring piece 26, the rotating sleeve 17 rotates in the opposite direction, releasing the pull rope 18, so that the mounting seat 121 is pulled by the second spring 19 and released in the direction away from the rotating sleeve 17.

[0080] The specific working principle of the present invention is as follows: first, the electric push rod connected to the movable seat 11 is controlled to start, so as to drive the movable seat 11 to move upward, so that under the mutual guidance of the guide pin 20 and the inclined groove 171, the rotating sleeve 17 is pulled to rotate, so that the pressure rod 12 is close to the clamping member 10, and then the material wrapped with the belt is placed between the pressure rod 12 and the mold on the clamping member 10, and at the same time, the third driving source is started, so that the head 24 can move downward to support the clamping member 10, so that the clamping member 10 clamps the mold until the pressure rod 12 clamps the material on the mold and puts sulfuric acid paper on the mold;

[0081] Then, the second driving source is started, and the second driving source drives the clamping member 10 to rotate, and the carbon cloth, carbon filaments, and mesh cloth to be wound are wound around the mold in sequence, and then the resin is sprayed on the produced blank through the spraying member 14, and finally the carbon filaments are wound and fixed, completing a cycle;

[0082] In the process of winding the carbon cloth, carbon filaments and mesh tire cloth in sequence, each time the winding of the material is completed, the fixing seat 151 moves toward the middle to clamp the blank, and the first driving source drives the pressure rod 12 to move downward and withdraw from the wound blank, so that it can not only fix the wound material, but also avoid the pressure rod 12 from bringing the material downward when it moves downward. When the pressure rod 12 continues to move upward to clamp the material for the second time, the fixing seat 151 retreats to both sides, because resin is also provided on the pressure rod 12, which can be automatically coated on the material, so that the materials can stick to each other and will not loosen. The displacement of the pressure rod 12 on the movable seat 11 is controlled by controlling the length of the first driving source until the pressure rod 12 continues to clamp the material for the second time for winding.

[0083] After completing one cycle of material arrangement, the fixing seat 151 is controlled to move toward the middle to clamp and fix the blank. By energizing the heating element 153 and filling air into the flexible pressure element 152, the blank is fastened, thereby solidifying the resin. The distance of the fixing seat 151 detected by the distance measuring component 16 at this time is used as the thickness of the blank, and provides a basis for the movement of the pressure rod 12 on the movable seat 11 for the next cycle of material distribution, until the thickness of the blank reaches the requirement and stops.

[0084] It should be noted that, in this article, the terms include, contain or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. Specific examples are used in this article to illustrate the principle and implementation of the technical solution of the present invention. The above examples are only used to help understand the method of the present invention and its core idea. The above is only a preferred implementation of the present invention. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements, modifications or changes can be made, and the above technical features can also be combined in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the invention to other occasions without improvement, should be regarded as the protection scope of the present invention.

Claims

1. A carbon-carbon heater blank processing process, characterized in that: The following steps are involved: Step 1: Blank forming: adopt pure mesh structure and special forming device, first install the forming mold, put sulfuric acid paper on the mold, and wind carbon cloth, carbon filament, mesh cloth in turn, then brush resin on the mesh cloth, fix it with carbon filament, and repeat the above arrangement until the outer diameter of the blank is 1-2mm larger than the product diameter, then wind 1-10mm carbon cloth, wind carbon filament every 1-5 layers in the middle, and finally perform acupuncture; Step 2: green body curing: curing temperature 100-300°C, curing time 1-10h; Step 3: Glue removal: temperature is 500-2000℃, duration is 2-20h, heating rate is 10-100℃ / h; Step 4: CVI treatment interface layer 1: temperature rise 5-30℃ / h, maximum temperature 900-1100℃, filling with natural gas and hydrogen, natural gas accounts for 80-99%, gas volume 1-100L / min; Step 5: High temperature treatment: treatment temperature 1800-2400℃; Step 6: CVI treatment: Maximum temperature 900-1300℃, natural gas and nitrogen, natural gas accounts for 80-99%, density after CVI is 0.7-1.2g / cm 3 ; Step 7: PIP treatment: Impregnation process: Use asphalt for impregnation to form the second interface layer, pressure 0.1-2mpa, temperature 50-300℃, pressure maintenance 1-5h; Carbonization process: maintain the temperature at 500℃-1200℃, slightly positive pressure or vacuum carbonization, for 5-30h; Step 8: High temperature treatment and machining: the treatment temperature is 1800-3000℃, and rough turning can be performed after high temperature; Density reaches 1.5-1.8g / cm 3 After finishing.

2. A carbon-carbon heater blank processing process according to claim 1, characterized in that: After step 6 and step 7 are completed, multiple rounds of processing can be performed again; When multiple rounds of PIP treatment are carried out, the pressure in the first half of the treatment is 0.1 MPa-20 MPa, and the pressure in the second half is 2-50 MPa, the temperature is 50-300°C, and the pressure is maintained for 2-20 hours according to the number of treatments to be carried out during the impregnation process; during the carbonization process: the temperature is 500°C-1200°C, slightly positive pressure or vacuum carbonization, and the duration is 5-30 hours.

3. A carbon-carbon heater blank forming device, characterized in that: A blank forming step for completing a carbon-carbon heater blank processing process as described in any one of claims 1-2, The invention comprises: a clamping member (10) for mounting a mold, the clamping member (10) being rotatably arranged, a movable seat (11) being connected to the rotating shaft of the clamping member (10), a pressure rod (12) being movably arranged on the movable seat (11), the pressure rod (12) clamping the material to be wound on the mold, and a fixing component (15) which is synchronously movable and clamps and holds the wound material on the clamping member (10) is arranged around the clamping member (10), and a distance measuring component (16) for measuring the movable position of the fixing component (15) is arranged on one side of the fixing component (15); A spraying part (14) for spraying resin on the wound material is also arranged above the clamping part (10).

4. A carbon-carbon heater blank forming device according to claim 3, characterized in that: The fixed component (15) comprises a fixed seat (151), a flexible pressure-applying member (152) is arranged on the inner concave surface of the fixed seat (151), and the flexible pressure-applying member (152) is connected to an air source; A heating element (153) is also provided inside the solidifying seat (151); a receiving groove (1503) for catching overflowing resin is provided at the bottom of the solidifying seat (151); and a driving component for driving its synchronous movement is connected to the solidifying seat (151).

5. A carbon-carbon heater blank forming device according to claim 4, characterized in that: A slide groove (154) is arranged in the fixed seat (151), a slide seat (155) is slidably arranged in the slide groove (154), and a pressure roller (156) is rotatably arranged on the slide seat (155) for smoothing the material on the mold; A thumbwheel (157) is rotatably arranged on the slide groove (154), a driving source for driving the thumbwheel (157) to move is arranged between the thumbwheel (157) and the slide groove (154), and a connecting rod (158) is arranged between the thumbwheel (157) and the slide seat (155).

6. A carbon-carbon heater blank forming device according to claim 5, characterized in that: A locking rod (159) is rotatably arranged on the slide groove (154), a first spring (1501) is arranged between the locking rod (159) and the slide groove (154), the first spring (1501) pulls the locking rod (159) to contact the thumbwheel (157), and a limiting groove (1502) that can be mutually locked with the connecting rod (158) is also arranged on the thumbwheel (157); The connecting rod (158) extends outward to the outside of the sliding groove (154), the fixed seat (151) is slidably arranged above the platform plate (13), and a stop pin (131) is fixedly arranged on the platform plate (13) and can contact the extended section of the connecting rod (158) to disengage the connecting rod (158) and the limiting groove (1502) from each other.

7. A carbon-carbon heater blank forming device according to claim 3, characterized in that: A rotating sleeve (17) is rotatably provided on the top of the movable seat (11), and a pull rope (18) is fixedly connected between the rotating sleeve (17) and the pressure rod (12); A first mounting groove (111) is arranged at the top of the movable seat (11), a mounting seat (121) is fixedly arranged at the bottom of the pressure rod (12) and is slidably arranged with respect to the first mounting groove (111), and a second spring (19) is arranged between the mounting seat (121) and the side wall of the first mounting groove (111) to pull the mounting seat (121) to move in a direction away from the rotating sleeve (17).

8. A carbon-carbon heater blank forming device according to claim 7, characterized in that: A guide pin (20) is arranged above the rotating sleeve (17) and is coaxially rotatable with the rotating shaft of the clamping member (10). The rotating sleeve (17) is provided with an inclined groove (171) that can contact and cooperate with the guide pin (20). The movable seat (11) rotates coaxially with the rotating shaft of the clamping member (10), and a first driving source for driving the movable seat (11) to slide up and down on the rotating shaft of the clamping member (10) is also provided at the bottom of the movable seat (11).

9. A carbon-carbon heater blank forming device according to claim 7, characterized in that: The movable seat (11) is provided with symmetrically arranged second installation grooves (112), and a spring piece (26) for pushing the rotating sleeve (17) to rotate and reset is fixedly provided on the bottom wall of one of the second installation grooves (112); An eccentric wheel (21) is rotatably arranged on the bottom wall of another second mounting groove (112), and a torsion spring (22) is arranged on the eccentric wheel (21) to drive it to continuously contact and tighten with the side wall of the rotating sleeve (17). A push rod (23) is also elastically and movably arranged on the movable seat (11) and passes through the second mounting groove (112) and the bottom surface of the movable seat (11), and the top of the push rod (23) is conical and can push the eccentric wheel (21) and the rotating sleeve (17) to separate.

10. A carbon-carbon heater blank forming device according to claim 3, characterized in that: A top head (24) for pressing the clamping member (10) outward is arranged inside the clamping member (10), a rotating shaft of the top head (24) is sleeved inside the rotating shaft of the clamping member (10), and the rotating shaft of the clamping member (10) and the support frame (25) are arranged to rotate relative to each other; The rotating shaft of the ram (24) is also connected to a second driving source for driving the ram (24) to rotate, and a third driving source for driving the ram (24) to move up and down along the axis of the clamp (10).

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