A production process for isostatically pressed graphite for large-scale fluidized bed granular silicon
Through the combined design of the load-bearing power and adsorption support structure, the problems of low efficiency and poor stability of medium-pressure graphite cutting in large-scale fluidized bed granular silicon production are solved, and high-quality slicing and stable transportation are achieved.
Patent Information
- Application Number
- CN202510363209.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-26
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2045-03-26
AI Technical Summary
In the production process of large-scale fluidized bed granular silicon, the cutting efficiency of isostatically pressed graphite sheets is low and the stability is poor. The sheets are prone to tilt and deformation during horizontal slicing, and the large area during vertical slicing can easily lead to instability, affecting the slicing quality.
The combined design of the bearing power mechanism, graphite positioning mechanism, intermittent propulsion assembly, knife cutting assembly and steering conveying mechanism is adopted. Through the negative pressure adsorption of the suction cup and the support structure, the stable cutting and conveying of isostatic graphite is achieved.
The cutting quality and stability of isostatic graphite are improved, the upright state of graphite sheets is ensured during slicing, and the tipping and deformation are avoided, which improves production efficiency and product quality.
Smart Images
Figure CN120206654B_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of isostatic graphite production, and in particular relates to a production process of isostatic graphite for large-scale fluidized bed granular silicon. Background Art
[0002] Isostatic graphite is pressed from high-purity graphite. It is a new type of graphite material with good heat resistance. In an inert gas atmosphere, the mechanical strength of isostatic graphite increases instead of decreasing with increasing temperature, reaching its highest value at around 2500°C. Compared with ordinary graphite, the structure of isostatic graphite is fine, dense and uniform. The thermal expansion coefficient of isostatic graphite is very low, and it has excellent thermal shock resistance. At the same time, isostatic graphite also has good thermal and electrical conductivity and excellent machinability.
[0003] During the fluidized bed granular silicon production process, the reactor needs to operate for a long time under high temperature (about 1100°C) and highly corrosive gas (such as H2, SiCl4, etc.) environment. Isostatic graphite is widely used as reactor lining material and load-bearing structural parts due to its high temperature resistance, thermal shock resistance and chemical corrosion resistance to ensure equipment stability and long life. Among them, plate-shaped components are one of the commonly used components in reactors.
[0004] Because the reactors used in large-scale fluidized bed granular silicon production are large in volume, the plate-like components used therein are generally large in area. During the horizontal slicing process of large-volume isostatically pressed graphite blocks, the cut isostatically pressed graphite sheets adhere to the top of the uncut isostatically pressed graphite blocks under their own weight, and the isostatically pressed graphite sheets need to be removed before slicing can continue, thereby reducing slicing production efficiency. If vertical slicing is used, the cut isostatically pressed graphite sheets are large in area and have low stability during the slicing process, which can easily cause large-area isostatically pressed graphite sheets to tilt and deform, which is not conducive to ensuring slicing quality. To this end, we provide a production process for isostatically pressed graphite for large-scale fluidized bed granular silicon to solve the above-mentioned problems. Summary of the Invention
[0005] The purpose of the present invention is to provide a production process of isostatic graphite for large-scale fluidized bed granular silicon, which solves the problems in the above-mentioned background technology through the specific structural design of the bearing power mechanism, graphite positioning mechanism, intermittent propulsion assembly, knife cutting assembly and steering conveying mechanism.
[0006] To solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention provides a production process for isostatic graphite for large-scale fluidized bed granular silicon, comprising the following steps: grinding, kneading, secondary grinding, forming, roasting, impregnation, graphitization and slicing; in the slicing step, the process includes a load-bearing power mechanism, one side of which is provided with a horizontally movable graphite positioning mechanism, the graphite positioning mechanism including a positioning table for placing the isostatic graphite; a belt transmission system is provided below the positioning table, the positioning table is equipped with an intermittent propulsion assembly for pushing the isostatic graphite; the other side of the load-bearing power mechanism is provided with a vertically movable knife cutting assembly and a steering conveying mechanism, the knife cutting assembly is provided above the slicing station, and the steering conveying mechanism is provided on the slicing station; the steering conveying mechanism includes a cylinder assembly, and an adsorption assembly is provided above the cylinder assembly; the cylinder assembly includes a rotatably arranged connecting rod and a slidably arranged movable frame, the adsorption assembly being rotatably arranged on the movable frame; the adsorption assembly includes a suction cup and a support shaft that is offset from the rotation axis of the adsorption assembly, and the connecting rod is rotatably connected to the corresponding support shaft.
[0007] In some embodiments, the bearing power mechanism includes a vertical bearing frame, a horizontal bearing frame is fixed to one side of the vertical bearing frame, a hydraulic cylinder is installed on one side of the horizontal bearing frame, the belt transmission system includes a horizontal transmission belt arranged under the horizontal bearing frame, a first motor is installed on the front side of the vertical bearing frame, the output end of the first motor is connected to a first power screw, a second motor is installed on the rear side of the vertical bearing frame, the output end of the second motor is connected to a second power screw, and a guide channel is opened on the side of the vertical bearing frame close to the second power screw.
[0008] In some embodiments, a first extension frame is fixed on both the front and rear sides of the positioning platform, the first extension frame is slidably mounted on the horizontal support frame, a signal trigger rod is fixed on the side of the vertical support frame close to the horizontal support frame, the signal trigger rod is adapted to the position of the signal mounting plate on the corresponding first extension frame, a pressure sensor is installed on the signal mounting plate, a third power screw rotatably connected to the two first extension frames is provided under the positioning platform, a third motor is installed on the first extension frame corresponding to the signal mounting plate, and the output end of the third motor is connected to the third power screw.
[0009] In some embodiments, a second extension frame is fixed to the side of the positioning platform close to the hydraulic cylinder, a limiting guide seat is fixed on the top of the second extension frame, a support plate connected to the output end of the hydraulic cylinder is fixed to the bottom of the positioning platform, a limiting channel is provided between the positioning platform and the first extension frame, a moving seat that cooperates with the thread of the third power screw is slidably provided inside the limiting channel, a horizontal positioning plate is fixed on the top of the moving seat, a vertical positioning plate is slidably provided on the track plate fixed on the top of the horizontal positioning plate, and a first adjusting rod that is threadedly connected to the vertical positioning plate is rotatably provided on the track plate.
[0010] In some embodiments, the intermittent propulsion assembly includes a horizontal propulsion frame slidably set on a limit guide seat, and a plurality of groups of stepping slots are arrayed on the horizontal propulsion frame, and the stepping slots are composed of a semicircular limit slot and a linear step inlet. A fixed propulsion plate is provided on the front side of the horizontal propulsion frame, and a movable propulsion plate is provided on one side of the fixed propulsion plate. A guide rod that slides with the fixed propulsion plate is fixed on the surface of the movable propulsion plate, and a second adjusting rod that screws with the fixed propulsion plate is rotatably set on the surface of the movable propulsion plate; a stepping motor is installed at the bottom of the second extension frame, and a cam seat is connected to the output end of the stepping motor, and an arc-shaped limit portion that is adapted to the semicircular limit slot is fixed on the top of the cam seat, and an intermittent toggle head that is adapted to the linear step inlet is fixed at an eccentric position on the top of the cam seat.
[0011] In some embodiments, the knife cutting assembly includes a lifting seat that is slidably mounted on a vertical support frame and threadedly engaged with the first power screw. A tool shaft that slides with the guide channel is fixedly mounted on one side of the lifting seat, and a slicing knife is fixedly mounted on the tool shaft.
[0012] In some embodiments, the cylinder assembly further includes a first fixed frame and a second fixed frame arranged relative to each other, the first fixed frame and the second fixed frame are slidably mounted on a vertical supporting frame, the second fixed frame is threadedly connected to the second power screw, a cylinder mounting frame is fixed between the first fixed frame and the second fixed frame, the movable frame is slidably mounted on the cylinder mounting frame, the connecting rod is rotatably mounted on the cylinder mounting frame, and the cylinder output end mounted on the cylinder mounting frame is connected to the movable frame.
[0013] In some embodiments, the adsorption assembly also includes a suction cup mounting frame, which is connected to the movable frame via a rotating shaft, and the support shaft is fixed on the opposite side walls of the suction cup mounting frame. A limiting plate is fixed on the top of the suction cup mounting frame, and a slicing baffle that is slidably connected to the suction cup mounting frame is provided on one side of the limiting plate. An elastic member is provided between the slicing baffle and the limiting plate, and a hollow guide part is connected to the top of the suction cup mounting frame through a support plate, and the suction cup and the hollow guide part are connected by a first air guide pipe, and the air supply equipment installed on the top of the suction cup mounting frame is connected to the hollow guide part through a second air guide pipe.
[0014] The present invention has the following beneficial effects: 1. The present invention pushes the isostatic graphite forward a short distance by a movable propulsion plate, so that when the side of the isostatic graphite to be sliced protrudes from the positioning table, the front side of the block isostatic graphite is in close contact with the suction cup, and a negative pressure is formed inside each suction cup through the air supply device, so that each suction cup is tightly adsorbed on the isostatic graphite. Subsequently, the first power screw is controlled to rotate by the first motor, so that the knife cutting assembly moves downward along the vertical carrier frame. In this process, the slicing knife is used to cut the block isostatic graphite. When the isostatic graphite on the positioning table is completed, the isostatic graphite on the positioning table is cut. After the protruding part of the front side of the graphite is cut, the slicing knife is under the positioning table and maintains a certain distance. At this time, the plate-shaped isostatic graphite formed by the cutting is adsorbed and fixed by each suction cup. Under the action of negative pressure suction, the plate-shaped isostatic graphite is squeezed against the slicing baffle, thereby increasing the support area of the suction cup mounting frame on the bottom of the plate-shaped isostatic graphite. Under the interaction of the suction cup mounting frame, the slicing baffle and the suction cup, the plate-shaped isostatic graphite is stably maintained in an upright state, and the plate-shaped isostatic graphite will not be tilted or deformed during the entire cutting process, which is conducive to ensuring the quality of the plate-shaped isostatic graphite after cutting.
[0015] 2. The present invention pushes the isostatic graphite forward a short distance by means of a movable propulsion plate, so that when the side of the isostatic graphite to be sliced protrudes from the positioning table, the portion of the suction cup mounting frame close to the slicing baffle is supported on the bottom of the protruding block of isostatic graphite. During the cutting process, effective support can be formed for the bottom of the isostatic graphite, so that the force exerted by the slicing knife on the isostatic graphite is more uniform, thereby ensuring the cutting quality of the isostatic graphite and effectively avoiding the problem of reduced quality of the cut plate-shaped isostatic graphite due to lack of support at the bottom of the isostatic graphite during the cutting process.
[0016] 3. After the cutting of the protruding portion of the front side of the isostatic graphite on the positioning table is completed, the slicing knife is below the positioning table and maintains a certain distance. At this time, the second power screw is controlled by the second motor to rotate, driving the steering conveying mechanism to move downward along the vertical carrier frame. That is, during this process, the slicing knife moves downward synchronously with the steering conveying mechanism (the two maintain their relative positions unchanged) until the slicing knife and the steering conveying mechanism are both moved down to the set position. During the downward movement of the steering conveying mechanism, the suction cup mounting frame, the slicing baffle and the suction cup work together to ensure that the plate-shaped isostatic graphite maintains a stable upright state without tipping or collision, which is conducive to the stable transportation of the cut plate-shaped isostatic graphite.
[0017] 4. In the present invention, during the counterclockwise rotation of the suction cup mounting frame, the negative pressure environment inside each suction cup is enhanced through the air supply equipment, so as to increase the negative pressure adsorption force of each suction cup on the plate-like isostatic graphite. The plate-like isostatic graphite further squeezes the slicing baffle and further increases the support area of the suction cup mounting frame on the bottom of the plate-like isostatic graphite. During the flipping of the plate-like isostatic graphite, the negative pressure adsorption effect of each suction cup prevents the plate-like isostatic graphite from falling. At the same time, the support and limiting effect of the suction cup mounting frame on the plate-like isostatic graphite ensures that the plate-like isostatic graphite completes the counterclockwise rotation smoothly, thereby improving the transportation stability of the plate-like isostatic graphite. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0019] Figure 1 This is a schematic diagram of the working process of a large-scale fluidized bed granular silicon isostatic graphite production equipment.
[0020] Figure 2 for Figure 1 Schematic diagram of the structure from another angle.
[0021] Figure 3 It is a structural schematic diagram of the production equipment of medium-pressure graphite in the present invention.
[0022] Figure 4 It is a structural diagram of the load-bearing power mechanism in the present invention.
[0023] Figure 5 It is a structural schematic diagram of the graphite positioning mechanism in the present invention.
[0024] Figure 6 for Figure 5 Schematic diagram of the structure from an upward perspective.
[0025] Figure 7 It is a structural schematic diagram of the intermittent propulsion component in the present invention.
[0026] Figure 8 It is a structural schematic diagram of the knife cutting component in the present invention.
[0027] Figure 9 It is a structural schematic diagram of the steering and conveying mechanism in the present invention.
[0028] Figure 10 It is a structural schematic diagram of the cylinder assembly in the present invention.
[0029] Figure 11 It is a structural schematic diagram of the adsorption component in the present invention.
[0030] In the accompanying drawings, the components represented by the reference numerals are as follows:
[0031] 1-Carrying power mechanism, 101-Vertical bearing frame, 102-Horizontal bearing frame, 103-Hydraulic cylinder, 104-Horizontal conveyor belt, 105-First motor, 106-First power screw, 107-Second motor, 108-Second power screw, 109-Guide channel, 110-Signal trigger rod, 2-Graphite positioning mechanism, 201-Positioning platform, 202-First extension frame, 203-Signal mounting plate, 204-Third power screw, 205-Third motor, 206-Second extension frame, 207-Limiting guide seat, 208-Support plate, 209-Limiting channel, 210-Moving seat, 211-Horizontal positioning plate, 212-Track plate, 213-Vertical positioning plate, 214-First adjusting rod, 3-Isostatic graphite, 4-Intermittent propulsion assembly, 401-Horizontal propulsion frame, 402-Semicircular limit 403- linear step import, 404- fixed push plate, 405- movable push plate, 406- guide rod, 407- second adjustment rod, 408- stepper motor, 409- cam seat, 410- arc limit part, 411- intermittent toggle head, 5- knife cutting assembly, 501- lifting seat, 502- tool shaft, 503- slicing knife, 6- steering conveying mechanism, 7- cylinder assembly, 701- connecting rod , 702-movable frame, 703-first fixed frame, 704-second fixed frame, 705-cylinder mounting frame, 706-cylinder, 8-adsorption component, 801-suction cup, 802-support shaft, 803-suction cup mounting frame, 804-rotating shaft, 805-limiting plate, 806-slicing baffle, 807-hollow guide part, 808-first air duct, 809-air supply equipment, 810-second air duct. DETAILED DESCRIPTION
[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.
[0033] For specific embodiment 1, please refer to Figure 1-11The present invention is a production process of isostatic graphite for large-scale fluidized bed granular silicon, comprising the following steps: grinding, kneading, secondary grinding, forming, roasting, impregnation, graphitization and slicing; in the slicing step, the process comprises a supporting power mechanism 1, a horizontally movable graphite positioning mechanism 2 is provided on one side of the supporting power mechanism 1, the graphite positioning mechanism 2 comprises a positioning table 201 for placing isostatic graphite 3; a belt transmission system is provided below the positioning table 201, an intermittent propulsion assembly 4 for pushing the isostatic graphite 3 is installed on the positioning table 201, and the supporting power mechanism 1 is provided on the other side. A vertically movable knife cutting assembly 5 and a steering conveying mechanism 6 are provided on the side. The knife cutting assembly 5 is provided above the slicing station, and the steering conveying mechanism 6 is provided on the slicing station; the steering conveying mechanism 6 includes a cylinder assembly 7, and an adsorption assembly 8 is provided above the cylinder assembly 7; the cylinder assembly 7 includes a rotatably arranged connecting rod 701 and a slidingly arranged movable frame 702, and the adsorption assembly 8 is rotatably arranged on the movable frame 702; the adsorption assembly 8 includes a suction cup 801 and a support shaft 802 that is out of position with the rotation axis of the adsorption assembly 8, and the connecting rod 701 is rotatably connected to the corresponding support shaft 802.
[0034] In some embodiments, as Figure 4 As shown, the bearing power mechanism 1 includes a vertical bearing frame 101, a horizontal bearing frame 102 is fixed to one side of the vertical bearing frame 101, a hydraulic cylinder 103 is installed on one side of the horizontal bearing frame 102, a belt transmission system includes a horizontal transmission belt 104 provided below the horizontal bearing frame 102 (the belt transmission system belongs to a commonly used transmission device in the prior art and is not described in detail here), a first motor 105 is installed on the front side of the vertical bearing frame 101, and the output end of the first motor 105 is connected to a first power screw 106, and the vertical bearing frame 101 is provided with a plurality of support members 104, 105, 106 ... 01 is installed on the rear side of the second motor 107, and the output end of the second motor 107 is connected to the second power screw 108. A guide channel 109 is provided on the side of the vertical support frame 101 close to the second power screw 108. In this embodiment, the cutting assembly 5 is moved up and down along the vertical support frame 101 by the cooperation of the first motor 105 and the first power screw 106, and the steering and conveying mechanism 6 is moved up and down along the vertical support frame 101 by the cooperation of the second motor 107 and the second power screw 108.
[0035] In some embodiments, as Figure 3 and Figure 5As shown, a first extension frame 202 is fixed on the front and rear sides of the positioning platform 201, and the first extension frame 202 is slidably mounted on the horizontal carrier frame 102. A signal trigger rod 110 is fixed on the side of the vertical carrier frame 101 close to the horizontal carrier frame 102. The signal trigger rod 110 is adapted to the position of the signal mounting plate 203 on the corresponding first extension frame 202. A pressure sensor is installed on the signal mounting plate 203 to control the graphite positioning mechanism 2 to move along the horizontal carrier frame 102 toward the slicing station. When the signal mounting plate 203 abuts against the signal trigger rod 110, the control system receives the pressure signal and controls the graphite positioning mechanism 2 to stop moving. At this time, the graphite positioning mechanism 2 just moves to the specified position. A third power screw 204 is provided under the positioning platform 201, which is rotatably connected to the two first extension frames 202. A third motor 205 is installed on the first extension frame 202 corresponding to the signal mounting plate 203, and the output end of the third motor 205 is connected to the third power screw 204.
[0036] In some embodiments, as Figure 5 and Figure 6 As shown, a second extension frame 206 is fixed to the side of the positioning platform 201 close to the hydraulic cylinder 103, a limiting guide seat 207 is fixed on the top of the second extension frame 206, and a support plate 208 connected to the output end of the hydraulic cylinder 103 is fixed to the bottom of the positioning platform 201, that is, the reciprocating motion of the graphite positioning mechanism 2 is realized by the hydraulic cylinder 103, a limiting channel 209 is provided between the positioning platform 201 and the first extension frame 202, a moving seat 210 that is threadably matched with the third power screw 204 is slidably provided inside the limiting channel 209, a horizontal positioning plate 211 is fixed on the top of the moving seat 210, a vertical positioning plate 213 is slidably provided on the track plate 212 fixed on the top of the horizontal positioning plate 211, and a vertical positioning plate 213 is rotatably provided on the track plate 212 The first threaded adjusting rod 214, after placing the isostatic graphite 3 on the top of the positioning platform 201 and adjusting its position, controls the third power screw 204 to rotate through the third motor 205 to realize the two moving seats 210 approaching each other, and the two horizontal positioning plates 211 moving synchronously with the moving seats 210 approach each other until the two horizontal positioning plates 211 abut against the two sides of the isostatic graphite 3. At this time, the isostatic graphite 3 is confined to the middle position of the positioning platform 201. Subsequently, the vertical positioning plates 213 are gradually moved downward by rotating the first adjusting rod 214 until the two vertical positioning plates 213 abut against the top of the isostatic graphite 3. In this way, the positioning of the isostatic graphite 3 is achieved through the joint action of the horizontal positioning plates 211 and the vertical positioning plates 213.
[0037] In some embodiments, as Figure 5 and Figure 7As shown, the intermittent propulsion assembly 4 includes a horizontal propulsion frame 401 slidably set on the limit guide seat 207 to ensure that the horizontal propulsion frame 401 can move horizontally smoothly. A plurality of groups of stepping slots are arranged in an array on the horizontal propulsion frame 401. The stepping slots are composed of a semicircular limit slot 402 and a linear step inlet 403. A fixed propulsion plate 404 is provided on the front side of the horizontal propulsion frame 401, and a movable propulsion plate 405 is provided on one side of the fixed propulsion plate 404. A guide rod 406 that slides with the fixed propulsion plate 404 is fixed on the surface of the movable propulsion plate 405. A second adjusting rod 407 that is threadedly matched with the fixed propulsion plate 404 is rotatably provided on the surface of the movable propulsion plate 405. The second extension frame 206 is installed at the bottom There is a stepping motor 408, and the output end of the stepping motor 408 is connected to a cam seat 409 (that is, a detachable connection, so that the horizontal propulsion frame 401 and the components thereon can be replaced with corresponding sizes according to the thickness of the slice, that is, the spacing between the semicircular limit opening 402 and the adjacent linear step inlet 403 is changed). An arc-shaped limit portion 410 adapted to the semicircular limit opening 402 is fixed on the top of the cam seat 409, and an intermittent toggle head 411 adapted to the linear step inlet 403 is fixed at an eccentric position on the top of the cam seat 409. During the process of controlling the rotation of the cam seat 409, the intermittent forward or backward movement of the horizontal propulsion frame 401 can be achieved through the joint action of the arc-shaped limit portion 410 and the intermittent toggle head 411.
[0038] After placing the isostatic graphite 3 on the top of the positioning platform 201 and adjusting its position (ie, aligning the side of the isostatic graphite 3 to be sliced with the Figure 5 The left side of the middle positioning platform 201 is kept flush), and the third power screw 204 is controlled to rotate by the third motor 205 to realize the two movable seats 210 approaching each other, and the two horizontal positioning plates 211 moving synchronously with the movable seat 210 approach each other until the two horizontal positioning plates 211 abut against the two sides of the isostatic graphite 3. At this time, the isostatic graphite 3 is limited to the middle position of the positioning platform 201, and then the vertical positioning plates 213 are gradually moved downward by rotating the first adjusting rod 214 until the two vertical positioning plates 213 abut against the top of the isostatic graphite 3, and then the movable propulsion plate 405 is controlled to move by rotating the second adjusting rod 407 until the movable propulsion plate 405 just abuts against the side of the isostatic graphite 3 close to the second extension frame 206. In this way, the precise positioning of the isostatic graphite 3 is achieved through the joint action of the horizontal positioning plates 211, the vertical positioning plates 213 and the movable propulsion plate 405.
[0039] Subsequently, the entire graphite positioning mechanism 2 is controlled by the hydraulic cylinder 103 to move along the horizontal carrier 102 toward the slicing station. When the signal mounting plate 203 abuts against the signal trigger rod 110, the control system receives the pressure signal and controls the hydraulic cylinder 103 to close. At this time, the graphite positioning mechanism 2 just moves to the specified position, that is, the side of the positioning platform 201 away from the second extension frame 206 just moves to the slicing station (the side of the positioning platform 201 away from the second extension frame 206 is close to the knife cutting component 5). Then the stepper motor 408 is controlled to operate once, and the cam seat 409 is driven to rotate by the stepper motor 408. After the intermittent toggle head 411 that rotates synchronously with the cam seat 409 enters the linear step inlet 403 at the corresponding position, it continues to rotate with the cam seat 409. Continuous rotation causes the intermittent toggle head 411 to slide along the inside of the linear step inlet 403 and push the horizontal propulsion frame 401 forward a fixed distance, thereby pushing the isostatic graphite 3 forward a short distance through the movable propulsion plate 405, so that the side of the isostatic graphite 3 to be sliced protrudes from the positioning table 201 (that is, the protruding part is the part to be cut), and then the first motor 105 controls the first power screw 106 to rotate, so that the knife cutting assembly 5 moves downward along the vertical carrier frame 101 to complete the cutting of the protruding part on the front side of the isostatic graphite 3 on the positioning table 201, that is, the slicing processing of the block-shaped isostatic graphite 3 is completed, and the cut plate-shaped isostatic graphite 3 is conveyed to the horizontal conveyor belt 104 under the action of the steering conveying mechanism 6, and is conveyed to the back-end process through the horizontal conveyor belt 104.
[0040] Specific embodiment 2, based on specific embodiment 1, as Figure 2 and Figure 8 As shown, the knife cutting assembly 5 includes a lifting seat 501 that is slidably mounted on the vertical support frame 101 and threadedly engaged with the first power screw 106. A tool shaft 502 that slidably engages with the guide channel 109 is fixedly mounted on one side of the lifting seat 501, and a slicing knife 503 is fixedly mounted on the tool shaft 502. Through this structural design, when the first power screw 106 is controlled to rotate by the first motor 105, the threaded engagement between the first power screw 106 and the lifting seat 501 is utilized to control the slicing knife 503 to move up and down. After slicing, the slicing knife 503 is located below the block of isostatically pressed graphite 3.
[0041] In some embodiments, as Figure 9 and Figure 10As shown, the cylinder assembly 7 also includes a first fixed frame 703 and a second fixed frame 704 arranged opposite to each other. The first fixed frame 703 and the second fixed frame 704 are slidably mounted on the vertical carrier frame 101. The second fixed frame 704 is threadedly connected to the second power screw 108. A cylinder mounting frame 705 is fixed between the first fixed frame 703 and the second fixed frame 704. The movable frame 702 is slidably mounted on the cylinder mounting frame 705. The connecting rod 701 is rotatably mounted on the cylinder mounting frame 705. The output end of the cylinder 706 mounted on the cylinder mounting frame 705 is connected to the movable frame 702. When the movable frame 702 is controlled to move along the cylinder mounting frame 705 by the retraction motion of the cylinder 706, it can be driven to rotate counterclockwise (as shown in FIG. 1 ) under the action of the connecting rod 701. Figure 9 As shown), the plate-shaped isostatic graphite 3 can be turned over.
[0042] In some embodiments, as Figure 9 and Figure 11 As shown, the adsorption component 8 also includes a suction cup mounting frame 803, the suction cup mounting frame 803 is connected to the movable frame 702 through a rotating shaft 804, the support shaft 802 is fixed to the opposite side walls of the suction cup mounting frame 803, and a limiting plate 805 is fixed on the top of the suction cup mounting frame 803. A slicing baffle 806 slidably connected to the suction cup mounting frame 803 is provided on one side of the limiting plate 805, and an elastic member is provided between the slicing baffle 806 and the limiting plate 805. The top of the suction cup mounting frame 803 is connected to a hollow guide portion 807 through a support plate, the suction cup 801 and the hollow guide portion 807 are connected by a first air guide pipe 808, and the air supply device 809 installed on the top of the suction cup mounting frame 803 is connected to the hollow guide portion 807 through a second air guide pipe 810. The suction cup mounting frame in the initial state The top surface of 803 is flush with the top surface of the positioning table 201. When the isostatic graphite 3 is pushed forward a short distance by the movable pushing plate 405, so that the side of the isostatic graphite 3 to be sliced protrudes from the positioning table 201, the part of the suction cup mounting frame 803 close to the slicing baffle 806 is supported on the bottom of the protruding block of isostatic graphite 3, which can form effective support for the bottom of the isostatic graphite 3 during the cutting process, so that the force exerted by the slicing knife 503 on the isostatic graphite 3 is relatively uniform, thereby ensuring the cutting quality of the isostatic graphite 3. If the bottom of the isostatic graphite 3 lacks support during the cutting process, then as the slicing knife 503 gradually penetrates into the cutting process, it is easy to cause uneven force on various parts of the isostatic graphite 3, thereby reducing the quality of the cut plate-like isostatic graphite 3.
[0043] When the isostatic graphite 3 is pushed forward a short distance by the movable propulsion plate 405, so that the side of the isostatic graphite 3 to be sliced protrudes from the positioning table 201 (that is, the protruding part is the part to be cut), the front side of the block isostatic graphite 3 is in close contact with the suction cup 801, and the air supply device 809 is used to form a negative pressure inside each suction cup 801, so that each suction cup 801 (elastic suction cup) is tightly adsorbed on the isostatic graphite 3 (in order to improve the adsorption strength, an industrial suction cup 801 can be used or the number of suction cups 801 can be increased), and then the first motor 105 controls the first power screw 106 to rotate, so that the knife cutting assembly 5 moves downward along the vertical carrier 101. In this process, the block isostatic graphite 3 is cut by the slicing knife 503. After the cutting of the protruding part of the front side of the isostatic graphite 3 on the positioning table 201 is completed, the slicing knife 503 is below the positioning table 201 and maintains a certain distance (which can be set by the system). At this time, the plate-shaped isostatic graphite 3 formed by the cutting is adsorbed and fixed by each suction cup 801. Under the action of negative pressure suction, the plate-shaped isostatic graphite 3 is squeezed against the slicing baffle 806, thereby increasing the support area of the suction cup mounting frame 803 on the bottom of the plate-shaped isostatic graphite 3. Under the interaction of the suction cup mounting frame 803, the slicing baffle 806 and the suction cup 801, the plate-shaped isostatic graphite 3 is stably maintained in an upright state, and the plate-shaped isostatic graphite 3 will not be tilted or deformed during the entire cutting process, which is conducive to ensuring the quality of the cut plate-shaped isostatic graphite 3.
[0044] After the cutting of the protruding part of the front side of the isostatic graphite 3 on the positioning platform 201 is completed, the slicing knife 503 is below the positioning platform 201 and maintains a certain distance. At this time, the second power screw 108 is controlled to rotate by the second motor 107 to drive the steering conveying mechanism 6 to move downward along the vertical carrier 101. That is, in this process, the slicing knife 503 moves downward synchronously with the steering conveying mechanism 6 (the two maintain the same relative position) until the slicing knife 503 and the steering conveying mechanism 6 are both moved down to the set position (at this time, the steering conveying mechanism 6 maintains a large distance from the positioning platform 201). During the downward movement of the steering conveying mechanism 6, the suction cup mounting frame 803, the slicing baffle 806 and the suction cup 801 work together to make the plate-shaped isostatic graphite 3 stably maintain an upright state without tipping or collision, which is conducive to the stable transportation of the cut plate-shaped isostatic graphite 3.
[0045] When the slicing knife 503 and the steering conveying mechanism 6 are both moved down to the set position (at this time, the slicing knife 503 is still below the steering conveying mechanism 6 and maintains a certain distance), the movable frame 702 is controlled to move along the cylinder mounting frame 705 by the retraction motion of the cylinder 706, and the suction cup mounting frame 803 is driven to rotate counterclockwise under the action of the connecting rod 701 until the suction cup mounting frame 803 completes a 90° counterclockwise rotation. At this time, the plate-shaped isostatically pressed graphite 3 is transformed from an upright state to a horizontal downward state, and the plate-shaped isostatically pressed graphite 3 is rotated from an upright state to a horizontal downward state. The graphite 3 is close to the top surface of the horizontal conveyor belt 104 and most of it is located above the horizontal conveyor belt 104. Then, the negative pressure environment inside each suction cup 801 disappears through the air supply device 809. Under the action of its own gravity, the plate-shaped isostatically pressed graphite 3 falls onto the horizontal conveyor belt 104. The plate-shaped isostatically pressed graphite 3 is gradually transported to the back-end process through the horizontal conveyor belt 104. Then, the cylinder 706 stretches and drives the movable frame 702 back to the initial position. At this time, the adsorption component 8 returns to the horizontal state (as shown in FIG. Figure 9 As shown), the first power screw 106 and the second power screw 108 are then synchronously reversed, causing the slicing knife 503 and the steering conveying mechanism 6 to move upward synchronously. After the steering conveying mechanism 6 is reset, the second power screw 108 stops rotating, and then the slicing knife 503 is continued to be driven upward by the action of the first power screw 106 until it is reset. Then, the stepping motor 408 is controlled to operate once again so that the movable propulsion plate 405 pushes the isostatic graphite 3 forward a short distance, so that the side of the isostatic graphite 3 to be sliced protrudes from the positioning table 201, and the cutting production of the plate-shaped isostatic graphite 3 is subsequently achieved in the same working manner as above.
[0046] During the counterclockwise rotation of the suction cup mounting frame 803, the negative pressure environment inside each suction cup 801 is enhanced through the air supply device 809, so as to increase the negative pressure adsorption force of each suction cup 801 on the plate-like isostatic graphite 3. The plate-like isostatic graphite 3 further squeezes the slicing baffle 806 and further increases the support area of the suction cup mounting frame 803 on the bottom of the plate-like isostatic graphite 3. During the flipping of the plate-like isostatic graphite 3, the negative pressure adsorption effect of each suction cup 801 is used to prevent the plate-like isostatic graphite 3 from falling. At the same time, the support and limiting effect of the suction cup mounting frame 803 on the plate-like isostatic graphite 3 ensures that the plate-like isostatic graphite 3 can complete the counterclockwise rotation smoothly, thereby improving the transportation stability of the plate-like isostatic graphite 3.
[0047] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
[0048] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims
1. A process for producing isostatically pressed graphite for large-scale fluidized bed granular silicon, comprising the steps of grinding, kneading, secondary grinding, forming, roasting, impregnation, graphitization, and slicing; characterized in that: In the slicing step, a carrying power mechanism is included, one side of which is provided with a horizontally movable graphite positioning mechanism, and the graphite positioning mechanism includes a positioning table for placing isostatically pressed graphite; A belt transmission system is provided below the positioning platform, and an intermittent propulsion assembly for pushing isostatic graphite is installed on the positioning platform. A vertically moving knife cutting assembly and a steering conveying mechanism are provided on the other side of the bearing power mechanism. The knife cutting assembly is provided above the slicing station, and the steering conveying mechanism is provided on the slicing station. The steering conveying mechanism includes a cylinder assembly, with an adsorption assembly disposed above the cylinder assembly; the cylinder assembly includes a rotatably mounted connecting rod and a slidably mounted movable frame, with the adsorption assembly rotatably mounted on the movable frame; the adsorption assembly includes a suction cup and a support shaft displaced from the rotation axis of the adsorption assembly, with the connecting rod being rotatably connected to the corresponding support shaft; The adsorption assembly also includes a suction cup mounting frame, the suction cup mounting frame is connected to the movable frame by a rotating shaft, the support shaft is fixed to the opposite side walls of the suction cup mounting frame, a limit plate is fixed on the top of the suction cup mounting frame, one side of the limit plate is provided with a slicing baffle slidably connected to the suction cup mounting frame, an elastic member is provided between the slicing baffle and the limit plate, the top of the suction cup mounting frame is connected to a hollow guide portion through a support plate, the suction cup and the hollow guide portion are connected by a first air guide pipe, the air supply device installed on the top of the suction cup mounting frame is connected to the hollow guide portion by a second air guide pipe, and the part of the suction cup mounting frame close to the slicing baffle is supported on the bottom of the protruding block of isostatically pressed graphite; The bearing power mechanism includes a vertical bearing frame, a second motor is installed on the rear side of the vertical bearing frame, and a second power screw is connected to the output end of the second motor; The cylinder assembly also includes a first fixed frame and a second fixed frame arranged opposite to each other, the first fixed frame and the second fixed frame are slidably mounted on the vertical supporting frame, the second fixed frame is threadedly connected to the second power screw, a cylinder mounting frame is fixed between the first fixed frame and the second fixed frame, the movable frame is slidably mounted on the cylinder mounting frame, the connecting rod is rotatably mounted on the cylinder mounting frame, and the cylinder output end mounted on the cylinder mounting frame is connected to the movable frame.
2. The process for producing isostatically pressed graphite for large-scale fluidized bed granular silicon according to claim 1, characterized in that: A horizontal carrier is fixed to one side of the vertical carrier, a hydraulic cylinder is installed on one side of the horizontal carrier, the belt transmission system includes a horizontal transmission belt arranged under the horizontal carrier, a first motor is installed on the front side of the vertical carrier, the output end of the first motor is connected to the first power screw, and a guide channel is opened on the side of the vertical carrier close to the second power screw.
3. The process for producing isostatically pressed graphite for large-scale fluidized bed granular silicon according to claim 2, characterized in that: A first extension frame is fixed on both the front and rear sides of the positioning platform, and the first extension frame is slidably mounted on the horizontal support frame. A signal trigger rod is fixed on the side of the vertical support frame close to the horizontal support frame, and the signal trigger rod is adapted to the position of the signal mounting plate on the corresponding first extension frame. A pressure sensor is installed on the signal mounting plate. A third power screw rotatably connected to the two first extension frames is provided under the positioning platform, and a third motor is installed on the first extension frame corresponding to the signal mounting plate, and the output end of the third motor is connected to the third power screw.
4. The process for producing isostatically pressed graphite for large-scale fluidized bed granular silicon according to claim 3, characterized in that: A second extension frame is fixed to the side of the positioning platform close to the hydraulic cylinder, a limiting guide seat is fixed on the top of the second extension frame, a support plate connected to the output end of the hydraulic cylinder is fixed to the bottom of the positioning platform, a limiting channel is provided between the positioning platform and the first extension frame, a moving seat which is threadably matched with the third power screw is slidably provided inside the limiting channel, a horizontal positioning plate is fixed on the top of the moving seat, a vertical positioning plate is slidably provided on the track plate fixed on the top of the horizontal positioning plate, and a first adjusting rod which is threadably connected to the vertical positioning plate is rotatably provided on the track plate.
5. The process for producing isostatically pressed graphite for large-scale fluidized bed granular silicon according to claim 4, characterized in that: The intermittent propulsion assembly includes a horizontal propulsion frame slidably arranged on a limit guide seat, and a plurality of groups of stepping slots are arranged in an array on the horizontal propulsion frame, and the stepping slots are composed of a semicircular limit slot and a linear step inlet. A fixed propulsion plate is provided on the front side of the horizontal propulsion frame, and a movable propulsion plate is provided on one side of the fixed propulsion plate. A guide rod that slides with the fixed propulsion plate is fixed on the surface of the movable propulsion plate, and a second adjusting rod that screws with the fixed propulsion plate is rotatably provided on the surface of the movable propulsion plate; a stepping motor is installed at the bottom of the second extension frame, and a cam seat is connected to the output end of the stepping motor, and an arc-shaped limit portion that is adapted to the semicircular limit slot is fixed on the top of the cam seat, and an intermittent toggle head that is adapted to the linear step inlet is fixed at an eccentric position on the top of the cam seat.
6. The process for producing isostatically pressed graphite for large-scale fluidized bed granular silicon according to claim 5, characterized in that: The knife cutting assembly includes a lifting seat that is slidably mounted on a vertical support frame and threadedly engaged with the first power screw. A tool shaft that slidably engages with the guide channel is fixedly mounted on one side of the lifting seat, and a slicing knife is fixedly mounted on the tool shaft.