Automatic quartz crucible feeding device

Abstract

The utility model discloses an automatic quartz crucible feeding device, which belongs to the technical field of automatic production lines, and comprises a robot seventh shaft, a robot mechanical arm and a sand blasting and scraping assembly, the robot mechanical arm reaches a specified position along the robot seventh shaft, and the robot mechanical arm controls the movement track of the sand blasting and scraping assembly arranged at the tail end. The control module is used for controlling the depth of the sand blasting and scraping assembly in the quartz crucible, the sand blasting and scraping assembly completes laying of sand on the inner wall of the crucible during the period, the robot mechanical arm moves the sand blasting and scraping assembly to a material supplementing position after the sand blasting and scraping assembly completes laying of sand on the inner wall of the crucible, the process is repeated, and automation of the automatic feeding process during quartz crucible production is achieved; according to the utility model, the manufacturing efficiency and the overall quality of the quartz crucible are improved, and the purpose of replacing a worker with a machine is achieved, so that the productivity is increased, the production cost is reduced, automation is realized, and long-term economic benefits and social benefits are brought to enterprises.

Description

Technical Field

[0001] The utility model relates to the technical field of automated production lines, in particular to an automatic feeding device for a quartz crucible. Background Art

[0002] Quartz crucibles are clean, homogeneous, and resistant to high temperatures. They are key consumables in the production of single-crystal silicon wafers. They are used to hold molten silicon and make crystal rods required for subsequent processes. During the production process, sandblasting is required many times. At present, the work of sand unloading and sandblasting is mainly done manually, which is labor-intensive and inefficient. In addition, the loaded sand is uneven, and the product qualification rate is low. For this reason, the utility model has developed an automatic loading device for quartz crucibles, which solves the difficulties of labor-intensive, inefficient, and low product qualification rate. Combined with the subsequent automatic sand unloading, it realizes machine replacement. Utility Model Content

[0003] The technical problem solved by the utility model is to provide an automatic feeding device for a quartz crucible, aiming to solve the problem that the quartz crucible cannot be automatically fed in the prior art.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic feeding device for a quartz crucible, comprising a robot seventh axis, a robot mechanical arm and a sandblasting and scraping assembly, wherein the robot mechanical arm reaches a specified position along the robot seventh axis, and the robot mechanical arm controls the movement trajectory of the sandblasting and scraping assembly provided at the end, during which the sandblasting and scraping assembly completes the laying of sand material on the inner wall of the crucible, and after completion, the robot mechanical arm moves the sandblasting and scraping assembly to a feeding position for feeding, and after completing the laying of one layer of inner wall, moves to the feeding position via the robot seventh axis, and after the firing of the inner wall layer is completed, the next layer of inner wall is laid, thereby completing the automation of the automatic feeding process of the quartz crucible in a cycle;

[0005] The seventh axis of the robot includes a frame body, a helical rack, a guide rail, a first servo motor, a first reducer, a helical gear and a slider. The frame body is the main structure, and most of the other parts are located on the frame body; the robot arm is located above the frame body, and the lower end of the robot arm is connected to the upper end of the frame body through a mounting base, the outer side of the upper end of the frame body is respectively provided with a guide rail, and sliders are respectively provided on both sides of the lower end of the mounting base, and the mounting base is connected to the frame body through the slider and the guide rail; a helical rack is provided on the inner side of the guide rail on one side, and a helical gear is provided on one side of the mounting base, which provides guidance and partial support for the mounting base through the helical gear and the slider, and a first servo motor is provided on the upper end of the helical gear, and the first servo motor is installed on the mounting base, and the lower end of the first servo motor is connected to the helical gear through the first reducer, and the helical gear is meshed with the helical rack on one side, and the helical gear and the helical rack provide power for the mounting base, and the helical gear is driven by the first servo motor to move on the helical rack, thereby driving the mounting base to move on the frame body;

[0006] The sandblasting and scraping assembly includes a scraper support frame, a weighing bin, a stainless steel wire mesh tube, a sand throwing table, a sandblasting head and a scraper. The front end of the robot mechanical arm is assembled with the side wall of the scraper support frame, the weighing bin is located at the top of the scraper support frame, the stainless steel wire mesh tube is located at the lower end of the weighing bin, and the stainless steel wire mesh tube is located on one side of the scraper support frame. The upper end of the stainless steel wire mesh tube is connected to the upper end of the weighing bin, and the lower end of the scraper support frame is respectively provided with an auxiliary mounting plate and a material throwing mounting plate, the sandblasting head is located at the lower end of the stainless steel wire mesh tube, and the sandblasting head is fixedly mounted on the auxiliary mounting plate and the material throwing mounting plate, and is used to convert the free-falling quartz gravel into a finer sand net, which is convenient for throwing the sand table to break up the gravel. The sand throwing tray is located at the lower end of the scraper support frame, and the upper end of the sand throwing tray is rotatably mounted on the lower end of the material throwing mounting plate, and the sand blasting head outlet is located on one side of the sand throwing tray, and a driving assembly is provided at the upper end of the material throwing mounting plate, and the sand throwing tray is driven to rotate by the driving assembly, and the scraper is located on the other side of the material throwing mounting plate, and the scraper is connected to the auxiliary mounting plate and the material throwing mounting plate through a scraper fixing plate, and the scraper fixing plate is located on one side of the auxiliary mounting plate and the material throwing mounting plate, the quartz sand raw material in the weighing silo is transported to the lower end of the scraper support frame through the stainless steel braided wire mesh pipe, and sprayed out through the sand blasting head, and the sprayed sand is evenly spread on the inner wall through the sand throwing tray; then the inner wall of the crucible is secondary shaped by the scraper on one side.

[0007] Preferably, protective plate assemblies are respectively provided on the outer walls on both sides of the upper end of the frame body, and the protective plate assemblies include protective plates and support members. The protective plates cover the outer wall surfaces on both sides of the upper end of the frame body, and a number of support members are located between the frame body and the protective plates. One side of the support member is connected to the outer wall surface of the upper end of the frame body, and the other side is connected to the inner wall surface of the protective plate, so that floating dust and foreign objects are protected through the protective plates, and the guide rails and bevel racks are protected from foreign objects, oil stains, etc.

[0008] Preferably, a plurality of track pads are respectively provided at the lower ends of the frame body, the track pads are in contact with the ground, and the height of the frame body is finely adjusted through the track pads to adjust the overall height and relative horizontal position of the seventh axis of the robot.

[0009] Preferably, anti-collision pads are respectively provided at both ends of the frame body, and the anti-collision pads are used to perform hard limiting and buffering protection when the mounting base moves to the two ends of the frame body.

[0010] Preferably, a drag chain plate is provided on the side of the upper end of the frame body that does not contain the bevel rack, and the dragged robot arm cable is guided and protected by the drag chain plate. At the same time, robot protection plates are provided around the mounting base for aesthetics and circuit dust prevention.

[0011] Preferably, the driving assembly is located on the side wall of the scraper support frame, and the driving assembly includes a second servo motor, a transmission shaft and a coupling. The second servo motor is located at the upper end of the scraper support frame and is installed on the side wall of the scraper support frame through a motor mounting plate. The transmission shaft is located at the lower end of the second servo motor, and the upper end of the transmission shaft is connected to the output end of the second servo motor through a second reducer. The lower end of the transmission shaft is rotatably connected to the auxiliary mounting plate. The coupling is located between the auxiliary mounting plate and the material throwing mounting plate, and the lower end of the transmission shaft is connected to the upper end of the sand throwing table through the coupling. The sand throwing table is powered by the transmission shaft and the coupling, and then the transmission shaft is driven to rotate by the second servo motor, thereby driving the sand throwing table to rotate and sand the quartz sand ejected from the sand blasting port.

[0012] Preferably, a weighing sensor is provided at the top of the scraper support frame, and the weighing sensor is used as a connecting piece between the weighing bin and the scraper support frame to automatically determine whether the remaining quartz sand raw material in the weighing bin needs to be replenished.

[0013] Preferably, a controllable switch is provided at the connection point between the stainless steel braided wire mesh tube and the weighing silo, the upper end of the controllable switch is connected to the bottom of the weighing silo, and the lower end is connected to the stainless steel braided wire mesh tube, for controlling the amount of sand produced.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. In the utility model, a multi-directional moving mechanical arm and a swinging feeding scheme are provided, and the automatic feeding process during the production of quartz crucibles can be realized, and the sand loading is more uniform, thereby improving the manufacturing efficiency of quartz crucibles and achieving the purpose of replacing people with machines, thereby increasing production capacity, reducing production costs and realizing automation, bringing long-term economic and social benefits to enterprises.

[0016] 2. In the utility model, the sandblasting and scraping assembly cooperates with the mechanical arm to achieve sandblasting of the multi-layer area on the inner wall of the quartz crucible, and a controllable switch is provided to control the amount of quartz sand in each layer of the crucible wall and adjust the material according to the sandblasting amount.

[0017] 3. In the utility model, a rotating sand-throwing tray and a scraper are adopted to ensure that the thickness of each layer of gravel is uniform and the surface is flat, thereby ensuring the overall quality of the manufacture of the quartz crucible. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0019] In the attached picture:

[0020] Figure 1 This is a schematic diagram of the overall structure of the utility model quartz crucible automatic feeding device;

[0021] Figure 2 This is a schematic diagram of the structure of the main part of the seventh axis of the utility model robot;

[0022] Figure 3 This is a schematic diagram of the structure of the seventh axis base of the utility model robot;

[0023] Figure 4 This is a schematic diagram of the structure of the protection plate assembly of the utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the sandblasting and scraping assembly of the utility model;

[0025] Numbers in the figure: 1. The seventh axis of the robot; 2. The protection plate assembly; 3. The robot mechanical arm; 4. The sandblasting and scraping assembly; 5. The track pad; 6. The frame body; 7. The anti-collision pad; 8. The drag chain plate; 9. The bevel rack; 10. The guide rail; 11. The mounting base; 12. The first servo motor; 13. The first reducer; 14. The bevel gear; 15. The slider; 16. The robot protection plate; 17. The support; 18. The protection plate; 19. The weighing bin; 20. The weighing sensor; 21. The scraping support frame; 22. The controllable switch; 23. The second servo motor; 24. The second reducer; 25. The motor mounting plate; 26. The transmission shaft; 27. The stainless steel braided wire mesh tube; 28. The auxiliary mounting plate; 29. ​​The coupling; 30. The material throwing mounting plate; 31. The sandblasting head; 32. The scraper fixing plate; 33. The sand throwing table; 34. The scraper. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0027] Example: Figure 1 As shown, an automatic feeding device for a quartz crucible comprises a robot seventh axis 1, a robot mechanical arm 3 and a sandblasting and scraping assembly 4. The robot mechanical arm 3 reaches a specified position along the robot seventh axis 1, and the robot mechanical arm 3 controls the movement trajectory of the sandblasting and scraping assembly 4 provided at the end. During this period, the sandblasting and scraping assembly 4 completes the laying of sand material on the inner wall of the crucible. After completion, the robot mechanical arm 3 moves the sandblasting and scraping assembly 4 to a feeding position for feeding. After completing the laying of one layer of inner wall, the robot mechanical arm 3 moves to the feeding position via the robot seventh axis 1. After the inner wall of this layer is fired, the next layer of inner wall is laid, thereby completing the automation of the automatic feeding process of the quartz crucible in a cycle;

[0028] like Figure 2 and Figure 3As shown, the robot seventh axis 1 includes a frame body 6, a bevel rack 9, a guide rail 10, a first servo motor 12, a first reducer 13, a bevel gear 14 and a slider 15. The frame body 6 is the main structure, and most of the other parts are located on the frame body 6; the lower end of the frame body 6 is respectively provided with a plurality of track pads 5, the track pads 5 are in contact with the ground, and the frame body 6 is finely adjusted in height through the track pads 5, which is used to adjust the overall height and relative horizontal position of the robot seventh axis 1, and anti-collision pads 7 are respectively provided at both ends of the frame body 6, and the anti-collision pads 7 are used to perform hard limit and buffer protection when the mounting base 11 moves to the two ends of the frame body 6, the robot manipulator 3 is located above the frame body 6, and the lower end of the robot manipulator 3 is connected to the upper end of the frame body 6 through the mounting base 11, the outer side of the upper end of the frame body 6 is respectively provided with guide rails 10, and the two sides of the lower end of the mounting base 11 are respectively provided with sliders 15, and the mounting base 11 is connected to the frame body through the slider 15 and the guide rail 10 The guide rail 10 on one side is provided with a bevel rack 9 on the inner side, and the mounting base 11 is provided with a bevel gear 14 on one side, which provides guidance and partial support for the mounting base 11 through the bevel gear 14 and the slider 15. The upper end of the bevel gear 14 is provided with a first servo motor 12, and the first servo motor 12 is installed on the mounting base 11. The lower end of the first servo motor 12 is connected to the bevel gear 14 through a first reducer 13. The bevel gear 14 is meshed with the bevel rack 9 on one side, and the bevel gear 14 and the bevel rack 9 provide power for the mounting base 11. The bevel gear 14 is driven by the first servo motor 12 to move on the bevel rack 9, and then the mounting base 11 is driven to move on the frame body 6. A drag chain plate 8 is provided on the side of the upper end of the frame body 6 that does not contain the bevel rack 9. The drag chain plate 8 guides and protects the cables of the robot mechanical arm 3 dragged out. At the same time, robot protection plates 16 are provided around the mounting base 11 for aesthetics and line dust prevention.

[0029] like Figure 5As shown, the sandblasting and scraping assembly includes a scraper support frame 21, a weighing bin 19, a stainless steel braided wire mesh tube 27, a sand throwing table 33, a sandblasting head 31 and a scraper 34. The front end of the robot mechanical arm 3 is assembled with the side wall of the scraper support frame 21. The weighing bin 19 is located at the top of the scraper support frame 21. A weighing sensor 20 is provided on the top of the scraper support frame 21. The weighing sensor 20 is used as a connecting piece between the weighing bin 19 and the scraper support frame 21 to automatically determine whether the remaining quartz sand raw material in the weighing bin 19 needs to be replenished. The stainless steel braided wire mesh tube 27 is located at the lower end of the weighing bin 19. A controllable switch 22 is provided at the connection between the stainless steel braided wire mesh tube 27 and the weighing bin 19. The upper end is connected to the bottom of the weighing bin 19, and the lower end is connected to the stainless steel braided wire mesh tube 27 for controlling the amount of sand output. The stainless steel braided wire mesh tube 27 is located on one side of the scraper support frame 21, and the upper end of the stainless steel braided wire mesh tube 27 is connected to the upper end of the weighing bin 19. The lower end of the scraper support frame 21 is respectively provided with an auxiliary mounting plate 28 and a material throwing mounting plate 30. The sandblasting head 31 is located at the lower end of the stainless steel braided wire mesh tube 27. The sandblasting head 31 is fixedly mounted on the auxiliary mounting plate 28 and the material throwing mounting plate 30, and is used to convert the free-falling quartz gravel into a finer sand net, so as to facilitate the sand throwing tray 33 to break up the gravel. The sand throwing tray 33 is located at the lower end of the scraper support frame 21, and the upper end of the sand throwing tray 33 is rotatably mounted on The material throwing mounting plate 30 is at the lower end, and the outlet of the sandblasting head 31 is located on one side of the sand throwing tray 33. A driving assembly is provided at the upper end of the material throwing mounting plate 30, and the sand throwing tray 33 is driven to rotate by the driving assembly. The driving assembly is located on the side wall of the scraper support frame 21. The driving assembly includes a second servo motor 23, a transmission shaft 26 and a coupling 29. The second servo motor 23 is located at the upper end of the scraper support frame 21 and is installed on the side wall of the scraper support frame 21 through a motor mounting plate 25. The transmission shaft 26 is located at the lower end of the second servo motor 23, and the upper end of the transmission shaft 26 is connected to the output end of the second servo motor 23 through a second reducer 24. The lower end of the transmission shaft 26 is connected to the auxiliary The auxiliary mounting plate 28 is rotatably connected, the coupling 29 is located between the auxiliary mounting plate 28 and the material throwing mounting plate 30, and the lower end of the transmission shaft 26 is connected to the upper end of the sand throwing table 33 through the coupling 29, and the sand throwing table 33 is powered by the transmission shaft 26 and the coupling 29, and then the transmission shaft 26 is driven to rotate by the second servo motor 23, thereby driving the sand throwing table 33 to rotate and sand the quartz sand ejected from the sand blasting port. The scraper 34 is located on the other side of the material throwing mounting plate 30, and the scraper 34 is connected to the auxiliary mounting plate 28 and the material throwing mounting plate 30 through a scraper fixing plate 32, and the scraper fixing plate 32 is located on one side of the auxiliary mounting plate 28 and the material throwing mounting plate 30.The quartz sand material in the weighing bin 19 is transported to the lower end of the scraper 34 support frame through the stainless steel braided wire mesh tube 27, and sprayed out through the sandblasting head 31, and the sprayed sand is evenly spread on the inner wall through the sand throwing tray 33; then the inner wall of the crucible is reshaped by the scraper 34 on one side.

[0030] Furthermore, if Figure 4 As shown, protective plate assemblies 2 are respectively provided on the outer walls on both sides of the upper end of the frame body 6, and the protective plate assembly 2 includes a protective plate 18 and a support member 17. The protective plate 18 covers the outer wall surfaces on both sides of the upper end of the frame body 6, and a plurality of support members 17 are located between the frame body 6 and the protective plate 18. One side of the support member 17 is connected to the outer wall surface of the upper end of the frame body 6, and the other side is connected to the inner wall surface of the protective plate 18, thereby protecting floating dust and foreign matter through the protective plate 18, and protecting the guide rail 10 and the bevel rack 9 from foreign matter, oil stains, etc.

[0031] Specific working principle: the robot arm 3 reaches the sand unloading device through the robot's seventh axis 1 to replenish materials, and the sand is filled into the weighing bin 19. After obtaining the raw materials, it reaches the end again through the robot's seventh axis 1 to operate. After reaching the specified position, the robot arm 3 follows the set trajectory to extend the sandblasting and scraping component 4 into the quartz crucible mold. At the same time, the second servo motor 23 drives the sand-throwing table 33 to start rotating and laying sand. When the robot arm 3 completes the first action, the sand-throwing table 33 stops rotating. At the same time, the robot arm controls the scraper to approach the inner wall of the quartz crucible and performs the second action. After the scraper flattens the inner wall for the second time, the robot arm controls the sandblasting and scraping component 4 to leave the quartz crucible to complete an automatic loading.

[0032] Finally, it should be noted that the above description is only a preferred example of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A quartz crucible automatic feeding device, characterized in that: It includes a robot seventh axis, a robot mechanical arm and a sandblasting and scraping assembly. The robot mechanical arm reaches a specified position along the robot seventh axis. The robot mechanical arm controls the movement trajectory of the sandblasting and scraping assembly provided at the end. During this period, the sandblasting and scraping assembly completes the laying of sand material on the inner wall of the crucible. After completion, the robot mechanical arm moves the sandblasting and scraping assembly to the material replenishment position. The seventh axis of the robot includes a frame body, a helical rack, a guide rail, a first servo motor, a first reducer, a helical gear and a slider. The robot arm is located above the frame body, and the lower end of the robot arm is connected to the upper end of the frame body through a mounting base. Guide rails are respectively provided on the outer side of the upper end of the frame body, and sliders are respectively provided on both sides of the lower end of the mounting base. The mounting base is connected to the frame body through the slider and the guide rail; a helical rack is provided on the inner side of the guide rail on one side, and a helical gear is provided on one side of the mounting base. A first servo motor is provided on the upper end of the helical gear, and the first servo motor is installed on the mounting base, and the lower end of the first servo motor is connected to the helical gear through a first reducer, and the helical gear is meshed with the helical rack on one side, and the helical gear is driven to move on the helical rack by the first servo motor, thereby driving the mounting base to move on the frame body; The sandblasting and scraping assembly includes a scraper support frame, a weighing bin, a stainless steel braided wire mesh tube, a sand throwing table, a sandblasting head and a scraper. The end of the robot arm is assembled with the side wall of the scraper support frame. The weighing bin is located at the top of the scraper support frame, the stainless steel braided wire mesh tube is located at the lower end of the weighing bin, and the stainless steel braided wire mesh tube is located on one side of the scraper support frame. The upper end of the stainless steel braided wire mesh tube is connected to the upper end of the weighing bin, and the lower end of the scraper support frame is respectively provided with an auxiliary mounting plate and a material throwing mounting plate, the sandblasting head is located at the lower end of the stainless steel braided wire mesh tube, and the sandblasting head is fixedly mounted on the auxiliary mounting plate and the material throwing mounting plate, the sand throwing table is located at the lower end of the scraper support frame, and The upper end of the sand-flinging tray is rotatably mounted on the lower end of the material-flinging mounting plate, and the sandblasting head outlet is located on one side of the sand-flinging tray. A driving assembly is provided on the upper end of the material-flinging mounting plate, and the sand-flinging tray is driven to rotate by the driving assembly. The scraper is located on the other side of the material-flinging mounting plate, and the scraper is connected to the auxiliary mounting plate and the material-flinging mounting plate through a scraper fixing plate. The scraper fixing plate is located on one side of the auxiliary mounting plate and the material-flinging mounting plate. The quartz sand raw material in the weighing silo is transported to the lower end of the scraper support frame through the stainless steel braided wire mesh pipe, and is sprayed out through the sandblasting head, and the sprayed sand is evenly spread on the inner wall through the sand-flinging tray; then the inner wall of the crucible is secondary molded by the scraper on one side.

2. The automatic quartz crucible feeding device according to claim 1, characterized in that: The outer walls on both sides of the upper end of the frame body are respectively provided with protective plate assemblies, and the protective plate assemblies include protective plates and support members. The protective plates cover the outer wall surfaces on both sides of the upper end of the frame body, and a number of support members are located between the frame body and the protective plates. One side of the support member is connected to the outer wall surface of the upper end of the frame body, and the other side is connected to the inner wall surface of the protective plate, so that the guide rail and the bevel rack are protected by the protective plate.

3. The automatic feeding device for quartz crucible according to claim 1, characterized in that: A plurality of track pads are respectively provided at the lower ends of the frame body, the track pads are in contact with the ground, and the height of the frame body is finely adjusted through the track pads.

4. The automatic quartz crucible feeding device according to claim 1, characterized in that: Anti-collision pads are respectively provided at both ends of the frame body, and the anti-collision pads are used to perform hard limiting and buffering protection when the mounting base moves to the two ends of the frame body.

5. The automatic quartz crucible feeding device according to claim 1, characterized in that: A drag chain plate is provided on the side of the upper end of the frame body that does not contain the bevel rack, and the robot arm cables are guided and protected by the drag chain plate. At the same time, robot protection plates are respectively provided around the mounting base.

6. The automatic quartz crucible feeding device according to claim 1, characterized in that: The driving assembly is located on the side wall of the scraper support frame, and the driving assembly includes a second servo motor, a transmission shaft and a coupling. The second servo motor is located at the upper end of the scraper support frame and is installed on the side wall of the scraper support frame through a motor mounting plate. The transmission shaft is located at the lower end of the second servo motor, and the upper end of the transmission shaft is connected to the output end of the second servo motor through a second reducer. The lower end of the transmission shaft is rotatably connected to the auxiliary mounting plate. The coupling is located between the auxiliary mounting plate and the material throwing mounting plate, and the lower end of the transmission shaft is connected to the upper end of the sand throwing table through the coupling. The transmission shaft is driven to rotate by the second servo motor, thereby driving the sand throwing table to rotate and sand the quartz sand ejected from the sand blasting port.

7. The automatic quartz crucible feeding device according to claim 6, characterized in that: A weighing sensor is provided at the top of the scraper support frame, and the weighing sensor is used as a connecting piece between the weighing bin and the scraper support frame to automatically determine whether the remaining quartz sand raw material in the weighing bin needs to be replenished.

8. The automatic quartz crucible feeding device according to claim 7, characterized in that: A controllable switch is provided at the connection point between the stainless steel braided wire mesh tube and the weighing silo. The upper end of the controllable switch is connected to the bottom of the weighing silo, and the lower end is connected to the stainless steel braided wire mesh tube for controlling the amount of sand produced.

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