Automatic spraying device for quartz crucible

Abstract

The application relates to the technical field of quartz crucible processing, in particular to an automatic spraying device for quartz crucibles, which comprises a machine shell, a spraying mechanism, a conveying mechanism and a grabbing mechanism. The spraying mechanism, the conveying mechanism and the grabbing mechanism are all installed on the machine shell. The grabbing mechanism is arranged above the conveying mechanism and the spraying mechanism and is used for transferring the quartz crucible between the conveying mechanism and the spraying mechanism. The spraying mechanism is responsible for spraying barium liquid on the quartz crucible. The conveying mechanism is responsible for conveying the quartz crucible. When working, the conveying mechanism receives the quartz crucible to be sprayed and sends the quartz crucible to a designated transfer position. The grabbing mechanism automatically grabs and transfers the quartz crucible to the spraying mechanism station. After spraying is completed, the grabbing mechanism sends the quartz crucible back to the conveying mechanism, and the conveying mechanism conveys the quartz crucible to the next process. The whole process does not need manual participation, saves the additional time of manual operation, greatly improves the spraying efficiency, realizes the full-process automation, reduces the risk of damage of the quartz crucible caused by manual contact and the health hidden danger of personnel close to the spraying area, and guarantees the production stability and the safety of personnel.

Description

Technical Field

[0001] This application relates to the field of quartz crucible processing technology, and in particular to an automatic spraying device for quartz crucibles. Background Technology

[0002] In the field of monocrystalline silicon production, quartz crucibles are an indispensable core vessel. Quartz crucibles are made by melting high-purity quartz sand at high temperatures to form a glassy structure. Quartz crucibles have high purity, excellent temperature resistance, large size and high precision characteristics, good heat preservation, energy saving effect and quality stability.

[0003] However, monocrystalline silicon production requires a high-temperature environment. During this process, liquid silicon easily reacts chemically with the quartz crucible, leading to its breakage or damage. This severely impacts production efficiency and crucible lifespan. To address this issue, the industry commonly employs a technique of spraying an isolation layer onto the quartz crucible surface. This layer is typically barium hydroxide containing water of crystallization. Upon heating, this barium hydroxide coating reacts with the silica on the crucible surface to form a dense cristobalite crystalline layer. This not only significantly improves the crucible's lifespan and monocrystalline silicon growth yield but also enhances its strength and reduces high-temperature softening. Simultaneously, the barium coating improves the chemical stability of the crucible's inner wall, reduces gas adsorption, promotes crystallization, and lowers oxygen solubility in liquid silicon, further ensuring the quality and yield of monocrystalline silicon.

[0004] In the relevant technology, the quartz crucible is first placed on the placement plate. The cylinder drives the nozzle to move down, causing the roller to roll along the inclined surface of the connecting plate. This triggers the clamping rods on both sides to automatically clamp the quartz crucible under the action of the support spring. Then, the motor is started to drive the quartz crucible to rotate. At the same time, the delivery pump sprays the coating evenly onto the inner wall of the quartz crucible through the multi-directional spray holes of the nozzle. After the spraying is completed, the motor adjusts the angle of the connecting plate to align the roller with the inclined surface. The cylinder lifts the nozzle to make the roller slide upward. The clamping rods expand outward to release the fixation, and the finished product can be taken out and the next round of operation can be repeated.

[0005] However, existing automatic coating devices for quartz crucibles have obvious limitations. The coating process requires manual placement and removal of the quartz crucibles. The manual placement and removal of the quartz crucibles takes up extra time, reducing overall production efficiency. It is difficult to form a continuous automated production line with subsequent processes, and it is difficult to meet the needs of large-scale production of large quartz crucibles. Utility Model Content

[0006] To address the aforementioned problems, this application provides an automatic coating device for quartz crucibles.

[0007] The automatic spraying device for quartz crucibles provided in this application adopts the following technical solution: An automatic coating device for quartz crucibles includes a housing, a coating mechanism, a conveying mechanism, and a gripping mechanism. The coating mechanism, the conveying mechanism, and the gripping mechanism are all installed inside the housing. The gripping mechanism is located above the conveying mechanism and the gripping mechanism. The gripping mechanism is used to transfer the quartz crucible between the conveying mechanism and the coating mechanism. The coating mechanism is used to coat the quartz crucible. The conveying mechanism is used to convey the quartz crucible.

[0008] By adopting the above technical solution, the conveying mechanism can receive the quartz crucible to be sprayed and stably convey the quartz crucible to the designated transfer position corresponding to the spraying mechanism. The gripping mechanism can automatically grab the quartz crucible from the conveying mechanism and transfer it to the workstation of the spraying mechanism for placement. After the spraying mechanism completes the barium liquid spraying, the gripping mechanism can automatically remove the quartz crucible from the spraying mechanism and transfer it back to the conveying mechanism. The conveying mechanism then conveys the sprayed quartz crucible to the next process. The entire quartz crucible transfer process improves the overall efficiency of the spraying operation, realizes the automation of the entire quartz crucible spraying process, and enables the spraying operation to continue efficiently. At the same time, it reduces the risk of breakage caused by manual contact with the quartz crucible and the health hazards faced by manual approach to the spraying area, further ensuring production stability and personnel safety.

[0009] Preferably, the spraying mechanism includes a bearing component, which includes a limiting bracket and a bearing platform, and the limiting bracket is rotatably supported on the bearing platform.

[0010] By adopting the above technical solution, the limiting bracket is used to support the quartz crucible, providing a stable foundation for its placement and reducing displacement or shaking during the spraying process. Furthermore, the limiting bracket rotates on the support platform, enabling the quartz crucible to rotate uniformly during spraying. This allows the spraying mechanism to continuously and comprehensively apply the coating to all areas of the outer surface and inner wall of the quartz crucible, ensuring a comprehensive and uniform barium liquid coating. This also aligns with the overall automated spraying requirements of the device, guaranteeing the stability of the automated spraying process and the quality of the coating.

[0011] Preferably, the limiting bracket is provided with a buffer layer.

[0012] By adopting the above technical solution, the buffer layer can isolate the rigid contact between the limiting bracket and the quartz crucible, reduce the friction coefficient between the limiting bracket and the quartz crucible, reduce the occurrence of scratches or bumps on the quartz crucible during placement and rotation with the limiting bracket for all-round spraying, protect the structural integrity of the quartz crucible, and is especially suitable for the characteristics of large quartz crucibles with large volume and heavy weight.

[0013] Preferably, the spraying mechanism further includes a spraying assembly, which is mounted on the inner wall of the housing. The spraying assembly includes a nozzle and a first drive unit for driving the nozzle to slide vertically downwards.

[0014] By adopting the above technical solution, the first driving unit drives the nozzle to slide vertically, so that the nozzle can cover all the surfaces to be sprayed from top to bottom of the quartz crucible according to the height of the quartz crucible, ensuring that the outer wall and inner wall of the quartz crucible can be uniformly covered by barium liquid at all heights, thus meeting the requirements of all-round spraying.

[0015] Preferably, the gripping mechanism includes a gripping member and a driving member for driving the gripping member, the driving member being used to drive the gripping member to slide horizontally onto the housing.

[0016] By adopting the above technical solution, the drive component drives the gripper to slide horizontally onto the housing, enabling the gripper to stably receive the quartz crucible transported to the designated position by the conveying mechanism, and horizontally transfer the quartz crucible to the working position of the spraying mechanism. After the spraying process is completed, the gripper can be driven to automatically send the quartz crucible back from the spraying mechanism to the conveying mechanism. The whole process realizes the transfer of the quartz crucible between the conveying mechanism and the spraying mechanism, improving the automation continuity and overall efficiency of the quartz crucible processing process.

[0017] Preferably, the conveying mechanism includes a conveying channel and a detection device, wherein the detection device is disposed at both ends of the conveying channel.

[0018] By adopting the above technical solution, the conveying channel, as the transport carrier of the quartz crucible, undertakes the function of moving the quartz crucible along a preset path in the production process. The detection devices at both ends are responsible for the entry detection of the quartz crucible entering the conveying channel to confirm whether the quartz crucible is in place, and the exit detection of the quartz crucible about to leave the conveying channel to confirm whether the quartz crucible has been completely transported to the designated position. This ensures the orderly flow of the quartz crucible and improves the automation and continuity of the overall production process.

[0019] Preferably, it also includes a safety protection mechanism, which is disposed on the outer wall of the housing.

[0020] By adopting the above technical solutions, it is possible to effectively prevent operators from accidentally touching the internal components of the machine casing. At the same time, if the spraying process inside the machine casing involves volatile paints or local high temperatures, the safety protection mechanism can also reduce the spillage of harmful substances and isolate the conduction of high temperatures, thus protecting the health of operators and reducing the impact on the surrounding working environment.

[0021] Preferably, it also includes an exhaust gas treatment mechanism, which includes an exhaust gas treatment component and an exhaust gas treatment device. The exhaust gas treatment component is disposed on the outer wall of the housing, and the exhaust gas treatment component is connected to the exhaust gas treatment device.

[0022] By adopting the above technical solution, the exhaust gas treatment component can capture volatile exhaust gases or harmful gases generated during the operation of the spraying mechanism. Through the connection structure with the exhaust gas treatment device, the collected exhaust gas can be quickly introduced into the exhaust gas treatment device for purification, effectively reducing the leakage of exhaust gas from the gaps in the casing to the external environment. This ensures that the exhaust gas generated by the spraying mechanism inside the casing is collected and treated in a targeted manner, while also meeting environmental emission requirements.

[0023] In summary, this application includes at least one of the following beneficial technical effects: 1. The conveying mechanism stably receives and transports the quartz crucible for spraying to the designated transfer position. The gripping mechanism automatically transfers and places the quartz crucible between the conveying mechanism and the spraying mechanism. After the spraying mechanism completes the barium liquid spraying, the gripping mechanism sends the quartz crucible back to the conveying mechanism to be transported to the next process. This reduces the need for manual intervention in the entire process, improves the overall efficiency of the spraying operation, realizes full-process automation to ensure the continuous and efficient progress of the operation, and reduces the risk of quartz crucible breakage caused by manual contact and health hazards near the spraying area, effectively improving production stability and personnel safety. 2. The limiting bracket can stably support the quartz crucible, providing a stable foundation for placement and effectively reducing the displacement or shaking of the quartz crucible during the spraying process, ensuring placement stability. At the same time, the limiting bracket rotates and is supported on the support platform, which can drive the quartz crucible to rotate synchronously during spraying, so that the spraying action of the spraying mechanism can evenly cover all areas of the outer surface and inner wall of the quartz crucible, ensuring that the barium liquid coating is all-round and of uniform thickness. This structure not only meets the requirements of the quartz crucible for spraying accuracy, but also adapts to the overall automated spraying process of the device, ensuring the reliability of the automated spraying process and the coating quality from both the aspects of load-bearing stability and spraying uniformity. 3. The drive unit drives the gripper to slide horizontally onto the machine housing, enabling the gripper to stably receive the quartz crucible transported to the designated position by the conveying mechanism and horizontally transfer the quartz crucible to the working position of the spraying mechanism. After the spraying process is completed, the quartz crucible can be sent back from the spraying mechanism to the conveying mechanism, realizing the automated transfer of the quartz crucible between the conveying mechanism and the spraying mechanism, effectively improving the automation continuity and overall efficiency of the quartz crucible processing process. Attached Figure Description

[0024] Figure 1 This is a structural schematic diagram of an embodiment of this application.

[0025] Figure 2 This is a structural schematic diagram of an embodiment of this application.

[0026] Figure 3 This is a structural diagram of the load-bearing component.

[0027] Figure 4 This is a structural diagram of the spraying assembly.

[0028] Figure 5 yes Figure 3 An enlarged diagram of A in the diagram.

[0029] Figure 6 This is a structural schematic diagram of an embodiment of this application.

[0030] Explanation of reference numerals in the attached drawings: 1. Housing; 2. Bearing assembly; 21. Limiting bracket; 211. Circular frame; 212. Rod; 213. Limiting plate; 22. Bearing platform; 23. First drive motor; 24. Turntable; 25. Buffer layer; 3. Spraying assembly; 31. Nozzle; 311. First knob; 312. Second knob; 313. Mixing chamber; 3131. Nozzle; 3132. Gas inlet; 32. First drive unit; 321. Support column; 3211 322. Sliding groove; 323. Slider; 324. Lead screw; 325. Connecting rod; 326. Second drive motor; 4. Conveying mechanism; 41. Conveying channel; 42. Detection device; 5. Gripping mechanism; 51. Gripping component; 52. Driving component; 6. Exhaust gas treatment mechanism; 61. Exhaust gas treatment assembly; 611. Exhaust fan; 612. Exhaust duct; 62. Exhaust gas treatment device; 7. Safety protection mechanism; 71. Emergency stop button; 72. Safety door; 8. Control panel. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0032] This application discloses an automatic spraying device for quartz crucibles. (Refer to...) Figure 1 and Figure 2 An automatic coating device for quartz crucibles includes a housing 1, a coating mechanism, a conveying mechanism 4, and a gripping mechanism 5. The coating mechanism, conveying mechanism 4, and gripping mechanism 5 are all mounted on the housing 1. The gripping mechanism 5 is positioned above the conveying mechanism 4 and the coating mechanism. The gripping mechanism 5 is used to transfer the quartz crucible between the conveying mechanism 4 and the coating mechanism. The coating mechanism is used to coat the quartz crucible. The conveying mechanism 4 is used to convey the quartz crucible. This arrangement enables the entire coating process of the quartz crucibles to be automated, improving production efficiency and reducing errors and time waste caused by manual operation.

[0033] Reference Figure 3Specifically, the spraying mechanism includes a support component 2, which includes a limiting bracket 21 and a support platform 22. The limiting bracket 21 is rotatably supported on the support platform 22. Specifically, the limiting bracket 21 includes a circular frame 211 and three rods 212. The three rods 212 are evenly distributed on the outer peripheral wall of the circular frame 211 and are fixedly connected to the circular frame 211. A limiting plate 213 is provided at the end of each rod 212 away from the circular frame 211. The limiting plate 213 is perpendicularly fixed to each rod 212. Furthermore, the support component 2 also includes a first drive motor 23 and a turntable 24. The turntable 24 is disposed between the limiting bracket 21 and the support platform 22. The limiting bracket 21 and the turntable 24 are fixedly connected. The first drive motor 23 is disposed below the support platform 22, and the output shaft of the first drive motor 23 passes through the support platform 22 and is coaxially fixed to the turntable 24.

[0034] This demonstrates that the limiting bracket 21, through the circular frame 211, three evenly distributed rods 212, and the vertically fixed limiting plate 213, can provide stable limiting from multiple directions around the quartz crucible. The three rods 212, evenly distributed on the outer wall of the circular frame 211, form a three-point support from the bottom and outer periphery of the quartz crucible, providing a stable support for its placement. Simultaneously, the limiting plate 213 is vertically fixed to the three evenly distributed rods 212. When the output shaft of the first drive motor 23 drives the turntable 24... The rotation further drives the limiting bracket 21 to rotate, and the limiting plate 213 can form a circumferential limit on the quartz crucible from the outside, effectively limiting the displacement of the quartz crucible in the radial direction, while preventing the quartz crucible from tilting and shaking due to rotation, placement deviation or slight external vibration. In addition, the first drive motor 23 enables the quartz crucible on the limiting bracket 21 to rotate stably and evenly during spraying, so that the spraying action of the spraying mechanism can fully cover the outer surface and inner wall of the quartz crucible, ensuring that the barium liquid coating is all-round and uniform in thickness.

[0035] In addition, the bearing component 2 also includes a buffer layer 25, which is disposed on the limiting bracket 21. The buffer layer 25 is made of rubber, which has good elasticity and buffering performance. The buffer layer 25 is fixedly disposed on the upper surface of the rod 212 and the circular frame 211. The function of the buffer layer 25 is to reduce the wear between the quartz crucible and the limiting bracket 21, protect the surface of the quartz crucible from damage, and also play a certain role in shock absorption, making the quartz crucible more stable during rotation.

[0036] Reference Figure 4Furthermore, the spraying mechanism also includes a spraying assembly 3, which includes a nozzle 31 and a first drive unit 32 for the nozzle 31. The first drive unit 32 is used to drive the nozzle 31 to slide vertically downwards. Specifically, the first drive unit 32 includes a support column 321, a slider 322, a lead screw 323, a connecting rod 324, and a second drive motor 325. The support column 321 is fixed to the side wall of the housing 1, and a sliding groove 3211 is provided inside the support column 321. The lead screw 323 is arranged vertically and rotates on the sliding groove 3211. The output shaft of the second drive motor 325 is coaxially fixed with the lead screw 323. The slider 322 slides and engages with the lead screw 323, and the slider 322 is slidably disposed in the sliding groove 3211. One end of the connecting rod 324 is fixedly connected to the slider 322, and the other end of the connecting rod 324 is fixedly connected to the nozzle 31.

[0037] Furthermore, the second drive motor 325 drives the lead screw 323 to rotate, causing the slider 322, which slides smoothly in the sliding groove 3211 within the lead screw 323, in a vertical direction. This, in turn, drives the nozzle 31 to move up and down synchronously via the connecting rod 324, achieving precise adjustment of the nozzle 31's height. Combined with the rotation of the quartz crucible driven by the bearing component 2, this ensures comprehensive coverage of different height areas on the outer surface and inner wall of the quartz crucible, guaranteeing no blind spots in the barium liquid spraying. This highly adapts to the overall automated process of the device, further improving the accuracy, comprehensiveness, and stability of the spraying operation, and ensuring the consistency of the quartz crucible coating quality. Reference Figure 5 Meanwhile, the nozzle 31 includes a first knob 311, a second knob 312, and a mixing chamber 313. The first knob 311 and the second knob 312 are rotatably disposed on the two end side walls of the mixing chamber 313. The mixing chamber 313 is provided with two gas inlets 3132 of the nozzle 3131. The nozzle 3131 and the two gas inlets 3132 are both connected to the interior of the mixing chamber 313. The nozzle 3131 is disposed on the front side wall of the mixing chamber 313, and the two gas inlets 3132 are disposed on the lower side wall of the mixing chamber 313. The two gas inlets 3132 are arranged in parallel.

[0038] Furthermore, the two gas inlets 3132 are connected to two types of gases: nitrogen and carbon dioxide. Carbon dioxide can lower the temperature of the barium liquid, while nitrogen carries the barium liquid out of the nozzle 3131 in a high-speed, continuous, and controllable manner. At the same time, nitrogen is an inert gas that is not reactive and does not easily react with other substances, which can better isolate oxygen and maintain the purity of the barium liquid, allowing for all-round spraying of the quartz crucible.

[0039] Furthermore, the size of the two gas inlets 3132 can be adjusted by rotating the first knob 311. When the first knob 311 is rotated clockwise, the two gas inlets 3132 become smaller, and the pressure of the gas entering the mixing chamber 313 increases. When the first knob 311 is rotated counterclockwise, the gas inlets 3132 become larger, and the pressure of the gas entering the mixing chamber 313 decreases. This allows for a slight adjustment of the height of the barium liquid spraying, controlling the effect of the barium liquid spraying. For example, small-scale modifications such as spraying 10 cm or 12 cm above the quartz crucible opening can be directly controlled by rotating the first adjustment knob.

[0040] Furthermore, after the barium liquid, carbon dioxide, and nitrogen are mixed in the mixing chamber 313, the spray atomization effect can be controlled by rotating the second knob 312. Rotating the second knob 312 clockwise will reduce the atomization effect, while rotating it counterclockwise will enhance the atomization effect, thus allowing for flexible spraying according to actual needs.

[0041] On the other hand, the gripping mechanism 5 includes a gripping member 51 and a driving member 52 for driving the gripping member 51. The driving member 52 is used to drive the gripping member 51 to slide in the horizontal direction. Specifically, in this embodiment, the driving member 52 is configured as a robotic arm, and the gripping member 51 is configured as a clamping machine. The clamping machine is fixedly connected to the robotic arm.

[0042] This demonstrates that the clamping machine can securely hold the quartz crucible through opening and closing actions, effectively reducing the risk of the quartz crucible slipping, bumping, or shifting during transfer, thus protecting the integrity of the quartz crucible. The drive component 52 is a robotic arm fixedly connected to the clamping machine. The robotic arm can precisely drive the clamping machine to slide smoothly in the horizontal direction, allowing the clamping machine to dock with the designated gripping position of the conveying mechanism 4 and the bearing component 2 of the spraying mechanism. This achieves automated horizontal transfer of the quartz crucible between the conveying mechanism 4 and the spraying mechanism, improving the efficiency of process connection.

[0043] Specifically, the conveying mechanism 4 includes a conveying channel 41 and a detection device 42. The detection device 42 is located at both ends of the conveying channel 41. The conveying channel 41 is composed of several rollers. The rollers are arranged in parallel and rotate on the housing 1. The rollers are used to transport the quartz crucible to the designated position. In this embodiment, the detection device 42 is set as an infrared detector. The infrared detector can identify the real-time position of the quartz crucible and feed back the position signal to the drive component 52, which drives the clamping machine to clamp the quartz crucible and transfer it to the carrying component 2, providing a basis for subsequent gripping and spraying operations.

[0044] Reference Figure 6Specifically, the device also includes a safety protection mechanism 7, which is located on the outer wall of the housing 1. The safety protection mechanism 7 may include an emergency stop button 71 and a safety door 72. The safety door 72 serves as a physical barrier on the outer wall of the housing 1, effectively preventing operators from accidentally touching components inside the housing 1. At the same time, if the spraying process inside the housing 1 involves volatile paints or localized high temperatures, the safety protection mechanism 7 can also reduce the spillage of harmful substances and isolate high temperature conduction, thus protecting the health of operators and reducing the impact on the surrounding working environment. The emergency stop button 71 serves as a rapid response device for emergencies. In case of emergency scenarios such as component failure, the operator can trigger the emergency stop button 71 with one click to quickly cut off the power source of the equipment, causing all moving parts such as the gripping mechanism 5, the conveying mechanism 4, and the spraying mechanism to stop immediately, minimizing the possibility of the accident escalating. Without interfering with the normal automated spraying process, it significantly improves the safety of operators and the reliability of equipment operation, meeting the safety compliance requirements of automated production.

[0045] Furthermore, the device also includes an exhaust gas treatment mechanism 6, which includes an exhaust gas treatment component 61 and an exhaust gas treatment device 62. The exhaust gas treatment component 61 is disposed on the outer wall of the housing 1 and is connected to the exhaust gas treatment device 62. Specifically, the exhaust gas treatment component 61 may include an exhaust fan 611 and an exhaust duct 612. The exhaust fan 611 is mounted on the outer wall of the housing 1 and is connected to one end of the exhaust fan 611 and the other end of the exhaust duct 612 is connected to the exhaust gas treatment device 62. The exhaust fan 611 generates negative pressure by rotating to capture volatile waste gases or harmful gases generated during the operation of the spraying mechanism. The collected waste gas can be quickly introduced into the exhaust duct 612 and further introduced into the exhaust gas treatment device 62 for purification, effectively reducing the leakage of waste gas from the gaps in the housing 1 to the external environment. This ensures that the waste gas generated by the spraying mechanism inside the housing 1 is collected and treated in a targeted manner, while also meeting environmental emission requirements and reducing environmental pollution.

[0046] Meanwhile, this embodiment also includes a control panel 8, which has a built-in PLC controller. The PLC controller is the core of logic operation and instruction sending. It can centrally receive the detection signals of the conveying mechanism 4, the position feedback of the gripping mechanism 5, the parameter data of the spraying mechanism, and other operating information of each component. It coordinates the conveying rhythm of the conveying mechanism 4, the horizontal sliding and clamping action of the gripping mechanism 5, the lifting and lowering of the nozzle 31 of the spraying mechanism, and the rotation speed of the bearing component 2, so as to realize the fully automated operation of each mechanism.

[0047] Meanwhile, the control panel 8, which integrates a PLC controller, provides operators with an intuitive interactive platform. It allows for easy input or adjustment of spraying parameters and real-time display of the operating status of each mechanism. When equipment malfunctions, the PLC controller can quickly locate the fault and issue an alarm through the control panel 8, assisting operators in efficiently troubleshooting and ensuring the automation and continuity of the spraying process. The control panel 8 also simplifies the operation and monitoring process, enabling the equipment to achieve efficient automated production while maintaining good operability and maintainability, further enhancing the overall stability and intelligence of the operation.

[0048] The implementation principle of the automatic spraying device for quartz crucibles in this application embodiment is as follows: The operator inputs the spraying parameters through the control panel 8 of the built-in PLC controller. After starting, the quartz crucible to be sprayed is placed at the entrance end of the conveying mechanism 4. The rollers of the conveying channel 41 start to rotate, driving the quartz crucible to be conveyed along the conveying channel 41. At this time, the infrared detector at the entrance end of the conveying channel 41 identifies the position of the quartz crucible and feeds the signal back to the PLC controller. The PLC controller coordinates the start of the gripping mechanism 5. The linear module of the drive component 52 drives the drive cylinder and the clamping machine to slide horizontally to the designated gripping position of the conveying mechanism 4. The clamping machine clamps the quartz crucible.

[0049] Subsequently, the clamping machine, driven by the linear module, slides horizontally to the bearing component 2 of the spraying mechanism, precisely placing the quartz crucible on the limiting bracket 21. The three evenly distributed rods 212 of the limiting bracket 21 form a three-point support from the bottom and the outer periphery, and together with the vertically fixed limiting plate 213, form a circumferential limit from the outside. The rubber buffer layer 25 reduces contact wear and dampens vibration, ensuring the stable placement of the quartz crucible. At the same time, the PLC controller controls the first drive motor 23 to start, and the output shaft of the first drive motor 23 drives the turntable 24 to rotate, causing the limiting bracket 21 and the quartz crucible to rotate synchronously and evenly, preparing for uniform spraying.

[0050] Next, the spraying assembly 3 is started, and the second drive motor 325 drives the lead screw 323 to rotate, causing the slider 322 to slide vertically along the sliding groove 3211 of the support column 321 to spray the quartz crucible in all directions along its height. Nitrogen and carbon dioxide are introduced into the two gas inlets 3132 of the nozzle 31, respectively. The nitrogen carries barium liquid and the carbon dioxide regulates the temperature. After the nitrogen and carbon dioxide are mixed with the barium liquid in the mixing chamber 313, they are sprayed out from the nozzle 3131. The operator can adjust the size of the gas inlet 3132 by rotating the first knob 311 to fine-tune the spraying height and rotate the second knob 312 to adjust the atomization effect. With the rotation of the quartz crucible, all-round and uniform spraying of the outer surface and inner wall of the quartz crucible can be achieved.

[0051] During the spraying process, the exhaust gas treatment component 61 on the outer wall of the casing 1 works synchronously. The exhaust fan 611 rotates to generate negative pressure, which guides the volatile exhaust gas generated during spraying into the exhaust gas treatment device 62 for purification through the exhaust pipe 612, reducing exhaust gas leakage. The safety door 72 of the safety protection mechanism 7 remains closed, forming a physical barrier. The emergency stop button 71 is in standby mode to ensure operational safety.

[0052] After the spraying is completed, the nozzle 31 stops working, the first drive motor 23 stops driving the limit bracket 21 to rotate; the gripping mechanism 5 moves again, the clamping machine clamps the sprayed quartz crucible from the bearing component 2, transfers it to the conveying mechanism 4 and releases it, the rollers of the conveying channel 41 transport the sprayed quartz crucible to the next process, and the entire spraying process is completed.

[0053] Throughout the process, the PLC controller receives the operating signals of each mechanism in real time and displays the equipment status intuitively through the control panel 8. If an abnormality occurs, the PLC controller quickly locates the fault and triggers an alarm. Operators can troubleshoot and handle the problem through the control panel 8, achieving fully automated and precise operation.

[0054] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An automatic spraying device for quartz crucibles, characterized in that, The device includes a housing (1), a spraying mechanism, a conveying mechanism (4), and a gripping mechanism (5). The spraying mechanism, the conveying mechanism (4), and the gripping mechanism (5) are all installed inside the housing (1). The gripping mechanism (5) is located above the conveying mechanism (4) and the gripping mechanism (5). The gripping mechanism (5) is used to transfer the quartz crucible between the conveying mechanism (4) and the spraying mechanism. The spraying mechanism is used to spray the quartz crucible. The conveying mechanism (4) is used to convey the quartz crucible.

2. The automatic spraying device for a quartz crucible according to claim 1, characterized in that, The spraying mechanism includes a support component (2), which includes a limiting bracket (21) and a support platform (22). The limiting bracket (21) is rotatably supported on the support platform (22).

3. The automatic spraying device for a quartz crucible according to claim 2, characterized in that, A buffer layer (25) is provided on the limiting bracket (21).

4. The automatic spraying device for a quartz crucible according to claim 1, characterized in that, The spraying mechanism further includes a spraying assembly (3), which is installed on the inner wall of the housing (1). The spraying assembly (3) includes a nozzle (31) and a first drive unit (32) for driving the nozzle (31). The first drive unit (32) is used to drive the nozzle (31) to slide down vertically.

5. The automatic spraying device for a quartz crucible according to claim 1, characterized in that, The gripping mechanism (5) includes a gripping member (51) and a driving member (52) for driving the gripping member (51). The driving member (52) is used to drive the gripping member (51) to slide horizontally onto the housing (1).

6. The automatic spraying device for a quartz crucible according to claim 1, characterized in that, The conveying mechanism (4) includes a conveying channel (41) and a detection device (42), wherein the detection device (42) is disposed at both ends of the conveying channel (41).

7. The automatic spraying device for a quartz crucible according to claim 1, characterized in that, It also includes a safety protection mechanism (7), which is disposed on the outer wall of the housing (1).

8. The automatic spraying device for a quartz crucible according to claim 1, characterized in that, It also includes an exhaust gas treatment mechanism (6), which includes an exhaust gas treatment component (61) and an exhaust gas treatment device (62). The exhaust gas treatment component (61) is disposed on the outer wall of the housing (1), and the exhaust gas treatment component (61) is connected to the exhaust gas treatment device (62).

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