Quartz boat welding device and method for solar silicon wafer

Abstract

The invention relates to the technical field of quartz boat welding, in particular to a quartz boat welding device for a solar silicon wafer and a welding method, the quartz boat welding device comprises a base, and the top of the base is fixedly connected with a workbench. The quartz boat is fixed between the outer wall of the clamping plate and the top of the workbench through stretching and retracting of the clamping assembly, meanwhile, impurities on the surface of the quartz boat are rubbed in the clamping process, the welding assembly can be driven to stretch through stretching and retracting of the clamping assembly, and the welding position is positioned and adjusted to the top of the quartz boat. The welding height of the quartz boat is adjusted by moving the welding assembly up and down, and meanwhile the protection assembly can be driven to move between the supporting column and the interior of the workbench. The welding assembly moves up and down to drive the clamping assembly to rotate, so that the situation that the clamping assembly shields the surface of the quartz boat in the welding process and influences the welding effect is avoided, the clamping assembly rubs on the surface of the protection assembly, and residual stains on the protection assembly are removed.

Description

Technical Field

[0001] The invention relates to the technical field of quartz boat welding, in particular to a quartz boat welding device and a welding method for solar silicon wafers. Background Art

[0002] Quartz boat for solar silicon wafers, also known as photovoltaic quartz boat, is an important tool used in the production process of solar silicon wafers; it is specially used in the manufacturing process of solar cells, especially for the growth and processing of silicon wafers. Its main function is to carry, transport and heat silicon-based materials, ensuring that the silicon materials can be evenly heated during the growth process, thereby improving the quality of solar cells.

[0003] Since solar silicon wafers have extremely high requirements for the purity and quality of quartz boats, special attention needs to be paid to avoid the introduction and contamination of impurities during the welding process. Therefore, the welding process needs to strictly control factors such as temperature, time, and atmosphere to ensure the purity and strength of the welded joint.

[0004] At present, the welding process of ordinary quartz boats has relatively low requirements on the purity and quality of the quartz boats. Since the quartz boats used for solar silicon wafers have extremely high requirements on purity and quality, special attention needs to be paid to avoid the introduction of impurities and contamination during the welding process. However, most quartz boat welding devices are not convenient for strictly cleaning and polishing the surface of the quartz boat before welding to remove surface impurities and contamination. In addition, it is not convenient to check and calibrate the laser welding equipment to ensure the accurate position and stability of the light beam.

[0005] In view of this, we propose a quartz boat welding device and welding method for solar silicon wafers. Summary of the invention

[0006] The object of the present invention is to provide a quartz boat welding device and welding method for solar silicon wafers to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned object, one of the objects of the present invention is to provide a quartz boat welding device for solar silicon wafers, comprising a base, a workbench is fixedly connected to the top of the base, a pillar is fixedly connected to the top of the workbench near one end, a clamp is fixedly connected to the top of the workbench near the other end, and two clamping assemblies are fixedly connected to the top of the workbench between the pillar and the clamp; A welding assembly is movably connected between the interior of the pillar and the clamping assembly, and protective assemblies are fixedly connected to the outer walls on both sides of the welding assembly, and the protective assemblies are movably connected between the pillar and the interior of the workbench; The clamping assembly is used to fix the quartz boat on the top of the workbench, and at the same time, it rubs and polishes impurities on the surface of the quartz boat, and can also position the welding position of the welding assembly. The welding assembly is used to move up and down to weld the quartz boat, while driving the protective assembly to move up and down, and while the welding assembly moves, it can also drive the clamping assembly to rotate, so that the clamping assembly rubs against the surface of the protective assembly during the rotation process.

[0008] As a further improvement of the present technical solution, the welding assembly includes a support block, the support block is movably connected inside the pillar, a screw is movably connected inside the support block, a thick column is fixedly connected to the outer wall of one side of the support block, a thin column is movably connected inside the thick column, two protrusions at the end of the thin column are movably connected inside the slide groove of the outer wall of the thick column, the end of the thin column passing through the thick column is fixedly connected to a vertical plate, the outer walls on both sides of the vertical plate are fixedly connected to racks, the toothed surface of the rack is movably connected to a clamping assembly, the end of the vertical plate is fixedly connected to two support plates, a welding head is movably connected between the two support plates, and the outer walls on both sides of the support block are fixedly connected to protective assemblies.

[0009] As a further improvement of the technical solution, the outer walls on both sides of the welding head are fixedly connected with rotating rods near the top, and the rotating rods are movably connected inside the support plate. One of the ends of the rotating rods passing through the support plate is fixedly connected with a motor.

[0010] As a further improvement of the present technical solution, the protective component includes a shielding cloth, two of the shielding cloths are respectively fixedly connected to the outer walls on both sides of the support block, the shielding cloth is movably connected between the inside of the support slide groove and the inside of the workbench, the top of the workbench is fixedly connected with a track near the outer wall of the splint, the shielding cloth passes through the outer wall of the workbench and is fixedly connected with a slider near the end, and the slider is movably connected inside the track.

[0011] As a further improvement of the technical solution, the shielding cloth is made of soft fireproof material.

[0012] As a further improvement of the present technical solution, the clamping assembly includes a cylinder, two of the cylinders are respectively fixedly connected to the top of the workbench near the outer walls of both sides of the pillar, the ends of the cylinder piston rods are fixedly connected with clamping blocks, a bracket is fixedly connected to the outer wall of one side of the clamping block near the end, the top of the clamping block is fixedly connected with a vertical pole near the other end, the vertical pole is movably connected between two support plates, a telescopic rod is movably connected inside the bracket, a roller is movably connected inside the telescopic rod near one end, a long rod is fixedly connected inside the telescopic rod near the other end, the long rod is movably connected inside the bracket, the end of the long rod passing through the bracket is fixedly connected with a gear, and the gear teeth are connected to the outer wall of the rack.

[0013] As a further improvement of the present technical solution, the telescopic rod includes a thick rod, which is movably connected to the inside of the bracket, a long rod is fixedly connected to the inside of the thick rod near the end, a thin rod is movably connected to the inside of the thick rod, the thin rod passes through the inside of the thick rod and is movably connected to a roller near the end, and an elastic part is fixedly connected between one end of the thin rod and the inside of the thick rod.

[0014] The second object of the present invention is to provide a welding method for operating the above-mentioned quartz boat welding device for solar silicon wafers, comprising the following method steps: S1. First, place the quartz boat on the top of the workbench, between the clamping assembly and the clamping plate, and fix the quartz boat between the outer wall of the clamping plate and the top of the workbench by retracting the clamping assembly. Meanwhile, rub the impurities on the surface of the quartz boat during the clamping process, and the retracting of the clamping assembly can also drive the welding assembly to stretch, so as to position and adjust the welding position. S2. The welding height of the quartz boat is adjusted by moving the welding assembly up and down, so that the welding assembly can be close to the surface of the quartz boat for welding. At the same time, the protective assembly can be driven to move between the pillar and the inside of the workbench, so that the protective assembly can be pushed out from the inside of the workbench and shielded at the outer wall of the splint to shield the sparks splashing from the quartz boat during welding; S3. While the welding component moves up and down, it can also drive the clamping component to rotate, so as to avoid the surface of the clamping component quartz boat being blocked during welding and affecting the welding effect, and make the clamping component rub against the surface of the protective component to remove the remaining stains on the protective component, so as to avoid the sparks splashing onto the protective component during welding and igniting the stains to cause a fire.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. In the quartz boat welding device and welding method for solar silicon wafers, the quartz boat is fixed between the outer wall of the clamping plate and the top of the workbench by the extension and contraction of the clamping assembly, and the impurities on the surface of the quartz boat are rubbed during the clamping process. The extension and contraction of the clamping assembly can also drive the welding assembly to stretch, so that the welding position is positioned and adjusted on the top of the quartz boat; 2. In the quartz boat welding device and welding method for solar silicon wafers, the welding height of the quartz boat is adjusted by moving the welding assembly up and down, which is convenient for the welding assembly to be close to the surface of the quartz boat for welding. At the same time, it can also drive the protective assembly to move between the pillar and the inside of the workbench, so that the protective assembly is pushed out from the inside of the workbench and shielded at the outer wall of the clamping plate, so as to shield the sparks splashed by the quartz boat during the welding process, and prevent the sparks from splashing onto the face of the staff during operation; 3. In the quartz boat welding device and welding method for solar silicon wafers, the up and down movement of the welding component can also drive the clamping component to rotate, thereby avoiding obstruction of the surface of the quartz boat of the clamping component during welding to affect the welding effect, and making the clamping component rub against the surface of the protective component to remove the residual stains on the protective component, thereby avoiding flammable stains on the protective component from being ignited by the splashing flames during welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure before welding of the present invention; Figure 2 It is a schematic diagram of the overall welding structure of the present invention; Figure 3 It is a schematic diagram of the motion path structure before welding of the present invention; Figure 4 It is a schematic diagram of the motion path structure in welding of the present invention; Figure 5 It is a schematic diagram of the workbench structure of the present invention; Figure 6 It is a schematic diagram of the structure of the protection component of the present invention; Figure 7 It is a schematic diagram of the structure of the welding assembly of the present invention; Figure 8 It is a schematic diagram of the structure of the clamping assembly of the present invention; Fig. 9 It is a schematic diagram of the telescopic rod structure of the present invention.

[0017] The meaning of each number in the figure is: 1. Base; 11. Workbench; 12. Pillar; 13. Welding assembly; 130. Support block; 131. Screw; 132. Thick column; 133. Thin column; 134. Vertical plate; 135. Rack; 136. Support plate; 137. Welding head; 1370. Rotating rod; 14. Protective assembly; 140. Shielding cloth; 141. Slider; 142. Track; 2. Splint; 21. Clamping assembly; 210. Cylinder; 211. Clamping block; 212. Bracket; 213. Telescopic rod; 2130. Thick rod; 2131. Thin rod; 2132. Elastic member; 214. Roller; 215. Long rod; 216. Gear; 217. Vertical rod. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention. Example 1

[0019] See also Figure 1-Figure 9 As shown, the purpose of this embodiment is to provide a quartz boat welding device for solar silicon wafers, including a base 1, a workbench 11 is fixedly connected to the top of the base 1, a pillar 12 is fixedly connected to the top of the workbench 11 near one end, a clamping plate 2 is fixedly connected to the top of the workbench 11 near the other end, and two clamping components 21 are fixedly connected to the top of the workbench 11 between the pillar 12 and the clamping plate 2; A welding assembly 13 is movably connected between the inside of the pillar 12 and the clamping assembly 21, and the outer walls on both sides of the welding assembly 13 are fixedly connected with a protective assembly 14, and the protective assembly 14 is movably connected between the pillar 12 and the inside of the workbench 11; The clamping assembly 21 is used to fix the quartz boat on the top of the workbench 11, and at the same time, it rubs and polishes the impurities on the surface of the quartz boat, and can also position the welding position of the welding assembly 13. The welding assembly 13 is used to move up and down to weld the quartz boat, while driving the protective assembly 14 to move up and down, and while the welding assembly 13 moves, it can also drive the clamping assembly 21 to rotate, so that the clamping assembly 21 rubs against the surface of the protective assembly 14 during the rotation process.

[0020] The improvement of this embodiment is that: by placing the quartz boat on the top of the workbench 11, between the clamping assembly 21 and the clamping plate 2, the quartz boat is fixed between the outer wall of the clamping plate 2 and the top of the workbench 11 by the expansion and contraction of the clamping assembly 21, and at the same time, impurities on the surface of the quartz boat are rubbed during the clamping process, and the expansion and contraction of the clamping assembly 21 can also drive the welding assembly 13 to stretch, so that the welding position is positioned and adjusted on the top of the quartz boat; The welding height of the quartz boat is adjusted by moving the welding assembly 13 up and down, so that the welding assembly 13 is convenient for welding close to the surface of the quartz boat. At the same time, the protection assembly 14 can be driven to move between the pillar 12 and the inside of the workbench 11, so that the protection assembly 14 is pushed out from the inside of the workbench 11 and shielded at the outer wall of the clamping plate 2, so as to shield the sparks splashed by the quartz boat during the welding process, and prevent the sparks from splashing onto the face of the staff during operation; The up and down movement of the welding assembly 13 can also drive the clamping assembly 21 to rotate, thereby preventing the surface of the quartz boat of the clamping assembly 21 from being blocked during welding and affecting the welding effect, and making the clamping assembly 21 rub against the surface of the protective assembly 14 to remove the stains remaining on the protective assembly 14, thereby preventing the flammable stains on the protective assembly 14 from being ignited by the splashing flames during welding; First, the specific structure of the welding assembly 13 is disclosed. The welding assembly 13 includes a support block 130, which is movably connected to the inside of the pillar 12. The support block 130 is movably connected to a screw 131. A thick column 132 is fixedly connected to the outer wall of one side of the support block 130. A thin column 133 is movably connected to the inside of the thick column 132. Two protrusions at the ends of the thin column 133 are movably connected to the inside of the slide groove on the outer wall of the thick column 132. The ends of the thin column 133 passing through the thick column 132 are fixedly connected to a vertical plate 134. Racks 135 are fixedly connected to the outer walls of both sides of the vertical plate 134. The toothed surface of the rack 135 is movably connected to the clamping assembly 21. Two support plates 136 are fixedly connected to the end of the plate 134, and a welding head 137 is movably connected between the two support plates 136. The outer walls on both sides of the support block 130 are fixedly connected with the protection assembly 14. The screw 131 is driven to rotate by the motor output shaft, so that the support block 130 moves up and down between the outside of the screw 131 and the inner wall of the pillar 12. The support block 130 moves downward, which facilitates the thick column 132, the thin column 133, the vertical plate 134, the rack 135, the support plate 136 and the welding head 137 to move downward at the same time, and the welding height of the welding head 137 is adjusted, so that the welding head 137 is close to the surface of the quartz boat for welding. The vertical plate 134 moves downward, driving the rack 135 downward, causing the toothed surface of the rack 135 to roll on the surface of the gear 216, and the rack 135 drives the gear 216 to rotate. The rotation of the gear 216 drives the long rod 215 to rotate inside the bracket 212, so that the telescopic rod 213 rotates inside the bracket 212, driving the roller 214 at the end of the telescopic rod 213 to move on the outer wall of the shielding cloth 140, and the roller 214 moves so that its outer wall forms a friction force with the outer wall of the shielding cloth 140, and the friction force drives the rotating shaft at the end of the roller 214 to rotate inside the telescopic rod 213, so that the roller 214 rotates and rubs to wipe off the stains on the surface of the shielding cloth 140.

[0021] Among them, in order to facilitate the welding head 137 to adjust the direction of laser welding, a rotating rod 1370 is fixedly connected to the outer walls of both sides of the welding head 137 near the top, and the rotating rod 1370 is movably connected to the inside of the support plate 136. One of the rotating rods 1370 passes through the end of the support plate 136 and is fixedly connected to a motor. The rotating rod 1370 is driven to rotate by the motor output shaft, so that the rotating rod 1370 drives the welding head 137 to rotate between the two support plates 136, so as to adjust the welding direction of the welding head 137, facilitate the movement of the welding position during the welding process of the welding head 137, perform linear welding on the quartz boat, and improve the welding quality.

[0022] Secondly, the specific structure of the protection component 14 is disclosed. The protection component 14 includes a shielding cloth 140. Two shielding cloths 140 are respectively fixedly connected to the outer walls on both sides of the support block 130. The shielding cloth 140 is movably connected between the inside of the slide groove of the pillar 12 and the inside of the workbench 11. A track 142 is fixedly connected to the top of the workbench 11 near the outer wall of the clamp 2. A slider 141 is fixedly connected to the end of the outer wall of the workbench 11 where the shielding cloth 140 passes through. The slider 141 is movably connected to the inside of the track 142, and the shielding cloth 140 is driven downward by the support block 130 to move downward, and the shielding cloth 140 is driven to move between the pillar 12 and the workbench 11, and is pushed upward from the inside of the workbench 11, so that the shielding cloth 140 drives the slider 141 to move upward inside the track 142, so that the shielding cloth 140 stands upright between the outer wall of the clamp 2 and the track 142, and the quartz boat welding fire between the clamp 2 and the clamp block 211 is shielded to prevent the splashing of fire from causing harm to the staff.

[0023] In order to prevent the shielding cloth 140 from burning when the welding flame contacts it, the shielding cloth 140 is made of a soft fireproof material. The raw materials of the shielding cloth 140 include acrylic coated glass fiber, silicone, and polyurethane coated glass fiber. The silicone hot vulcanizing adhesive MW-109-3B is used to evenly coat the silicone on the surface of the glass fiber by brushing, dipping and spraying. In the process of drying and molding the silicone and glass fiber, the temperature and time are strictly controlled to ensure a firm bond between the silicone and the glass fiber. At the same time, in the coating process, the thickness and uniformity of the coating are controlled to ensure a close bond between the coating and the fiber, and provide sufficient support so that it can isolate the flame and heat while being supported on the top of the workbench 11.

[0024] Finally, the specific structure of the clamping assembly 21 is disclosed. The clamping assembly 21 includes a cylinder 210. The two cylinders 210 are respectively fixedly connected to the top of the workbench 11 near the outer walls of both sides of the pillar 12. The ends of the piston rods of the cylinders 210 are fixedly connected with clamping blocks 211. The outer wall of one side of the clamping block 211 is fixedly connected with a bracket 212 near the end. The top of the clamping block 211 is fixedly connected with a vertical rod 217 near the other end. The vertical rod 217 is movably connected between the two support plates 136. The inside of the bracket 212 is movably connected with a telescopic rod 213. The inside of the telescopic rod 213 is movably connected with a roller 214 near one end. The inside of the telescopic rod 213 is fixedly connected with a long rod 215 near the other end. The long rod 215 is movably connected to the inside of the bracket 212, and the long rod 215 passes through the bracket 21. 2 is fixedly connected with a gear 216, and the gear 216 teeth are connected to the outer wall of the rack 135. The clamp block 211 is pushed to move on the top of the workbench 11 by the piston rod of the cylinder 210, so that the clamp block 211 is close to the clamp plate 2, so that the quartz boat is clamped and fixed between the clamp block 211 and the clamp plate 2. At the same time, during the movement of the clamp block 211, the bracket 212, the telescopic rod 213, the roller 214, the long rod 215, the gear 216 and the vertical rod 217 are driven to move simultaneously, so that the telescopic rod 213 drives the roller 214 to move on the surface of the quartz boat, and the friction between the surface of the roller 214 and the surface of the quartz boat drives the rotating shaft at the end of the roller 214 to rotate inside the telescopic rod 213, so that the friction force of the rotation of the roller 214 removes and polishes the impurities on the surface of the quartz boat, thereby improving the welding quality of the quartz boat.

[0025] In order to prevent the clamping distance from being blocked by the length of the telescopic rod 213 during the clamping movement of the clamping block 211, the telescopic rod 213 includes a thick rod 2130, which is movably connected to the inside of the bracket 212, and a long rod 215 is fixedly connected to the inside of the thick rod 2130 near the end, and a thin rod 2131 is movably connected to the inside of the thick rod 2130, and the thin rod 2131 passes through the inside of the thick rod 2130 and is movably connected to the roller 214 near the end, and an elastic member 2132 is fixedly connected between one end of the thin rod 2131 and the inside of the thick rod 2130. When the roller 214 moves to the outer wall of the clamping plate 2, if the roller 214 214 is continuously moved and subjected to force, thereby driving the thin rod 2131 to compress the elastic member 2132, so that the elastic member 2132 shrinks between the end of the thin rod 2131 and the inside of the thick rod 2130, which facilitates the shrinkage of the thin rod 2131 inside the thick rod 2130, and adjusts the length between the thick rod 2130 and the thin rod 2131 to avoid blockage of the clamping block 211 by the length between the thick rod 2130 and the thin rod 2131. At the same time, the rebound force of the elastic member 2132 can drive the thin rod 2131 to be pushed outward, so that the roller 214 at the end of the thin rod 2131 can touch the surface of the quartz boat and the shielding cloth 140 to rub them. Example 2

[0026] This embodiment is based on the content provided in Embodiment 1, and aims to provide a welding method for a quartz boat welding device for solar silicon wafers, and the specific steps are as follows: S1, placing the quartz boat on the top of the workbench 11, between the clamping assembly 21 and the clamping plate 2, pushing the clamping block 211 on the top of the workbench 11 through the piston rod of the cylinder 210, so that the clamping block 211 is close to the clamping plate 2, thereby clamping and fixing the quartz boat between the clamping block 211 and the clamping plate 2; S2. During the movement of the clamp 211, the bracket 212, the telescopic rod 213, the roller 214, the long rod 215, the gear 216 and the vertical rod 217 are driven to move simultaneously, so that the telescopic rod 213 drives the roller 214 to move on the surface of the quartz boat, and the friction between the surface of the roller 214 and the surface of the quartz boat drives the rotating shaft at the end of the roller 214 to rotate inside the telescopic rod 213, so that the friction force of the rotation of the roller 214 removes and polishes the impurities on the surface of the quartz boat, thereby improving the welding quality of the quartz boat; S3, the screw rod 131 is driven to rotate by the motor output shaft, so that the support block 130 moves up and down between the outside of the screw rod 131 and the inner wall of the pillar 12, and the support block 130 moves downward, so as to facilitate the thick column 132, the thin column 133, the vertical plate 134, the rack 135, the support plate 136 and the welding head 137 to move downward at the same time, and adjust the welding height of the welding head 137, so as to facilitate the welding head 137 to approach the surface of the quartz boat for welding; S4, the motor output shaft drives the rotating rod 1370 to rotate, so that the rotating rod 1370 drives the welding head 137 to rotate between the two support plates 136, and the welding direction of the welding head 137 is adjusted, so that the welding position can be moved during the welding process of the welding head 137, and the quartz boat can be welded in a straight line to improve the welding quality; S5. When the support block 130 moves downward, the shielding cloth 140 is driven to move downward, and the shielding cloth 140 is driven to move between the pillar 12 and the workbench 11, and is pushed upward from the inside of the workbench 11, so that the shielding cloth 140 drives the slider 141 to move upward inside the track 142, so that the shielding cloth 140 stands upright between the outer wall of the clamping plate 2 and the track 142, and shields the welding fire of the quartz boat between the clamping plate 2 and the clamping block 211, so as to prevent the splashing of the fire from causing harm to the workers; S6. When the vertical plate 134 moves downward, it drives the rack 135 to move downward, so that the toothed surface of the rack 135 rolls on the surface of the gear 216, and the gear 216 is driven to rotate by the rack 135. The rotation of the gear 216 drives the long rod 215 to rotate inside the bracket 212, so that the telescopic rod 213 rotates inside the bracket 212, and drives the roller 214 at the end of the telescopic rod 213 to move on the outer wall of the shielding cloth 140. The outer wall of the roller 214 moves to form a friction force with the outer wall of the shielding cloth 140. The friction force drives the rotating shaft at the end of the roller 214 to rotate inside the telescopic rod 213, so that the roller 214 rotates and rubs to wipe the stains on the surface of the shielding cloth 140; S7. When the roller 214 moves to the outer wall of the clamping plate 2, if the roller 214 continues to move and is subjected to force, the thin rod 2131 is driven to compress the elastic member 2132, so that the elastic member 2132 is contracted between the end of the thin rod 2131 and the inside of the thick rod 2130, so that the thin rod 2131 can be contracted inside the thick rod 2130, and the length between the thick rod 2130 and the thin rod 2131 is adjusted to avoid blockage of the clamping block 211 by the length between the thick rod 2130 and the thin rod 2131. At the same time, the rebound force of the elastic member 2132 can drive the thin rod 2131 to be pushed outward, so that the roller 214 at the end of the thin rod 2131 can touch the surface of the quartz boat and the shielding cloth 140 to rub them.

[0027] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A quartz boat welding device for solar silicon wafers, comprising a base (1), characterized in that: A workbench (11) is fixedly connected to the top of the base (1), a pillar (12) is fixedly connected to the top of the workbench (11) near one end, a clamping plate (2) is fixedly connected to the top of the workbench (11) near the other end, and two clamping assemblies (21) are fixedly connected to the top of the workbench (11) between the pillar (12) and the clamping plate (2); A welding assembly (13) is movably connected between the interior of the pillar (12) and the clamping assembly (21); outer walls on both sides of the welding assembly (13) are fixedly connected to protective assemblies (14); and the protective assemblies (14) are movably connected between the pillar (12) and the interior of the workbench (11); The clamping assembly (21) is used to fix the quartz boat on the top of the workbench (11), and at the same time, rub and polish impurities on the surface of the quartz boat, and can also position the welding position of the welding assembly (13). The welding assembly (13) is used to move up and down to weld the quartz boat, while driving the protective assembly (14) to move up and down, and when the welding assembly (13) moves, it can also drive the clamping assembly (21) to rotate, so that the clamping assembly (21) rubs against the surface of the protective assembly (14) during the rotation process.

2. The quartz boat welding device for solar silicon wafers according to claim 1, characterized in that: The welding assembly (13) comprises a support block (130), the support block (130) being movably connected to the inside of the pillar (12), the support block (130) being movably connected to a screw rod (131), one side of the outer wall of the support block (130) being fixedly connected to a thick column (132), the thick column (132) being movably connected to a thin column (133), two protrusions at the ends of the thin column (133) being movably connected to the inside of a slide groove on the outer wall of the thick column (132), the thin column (133) being movably connected to the outside of the thick column (132), and the thin column (133) being movably connected to the inside of a slide groove on the outer wall of the thick column (132). 33) The end of the thick column (132) is fixedly connected to a vertical plate (134), the outer walls on both sides of the vertical plate (134) are fixedly connected to racks (135), the toothed surface of the rack (135) is movably connected to a clamping assembly (21), the end of the vertical plate (134) is fixedly connected to two support plates (136), a welding head (137) is movably connected between the two support plates (136), and the outer walls on both sides of the support block (130) are fixedly connected to protective assemblies (14).

3. The quartz boat welding device for solar silicon wafers according to claim 2, characterized in that: The outer walls of both sides of the welding head (137) are fixedly connected to rotating rods (1370) near the top. The rotating rods (1370) are movably connected to the inside of the support plate (136). One end of the rotating rods (1370) passing through the support plate (136) is fixedly connected to a motor.

4. The quartz boat welding device for solar silicon wafers according to claim 2, characterized in that: The protection component (14) comprises a shielding cloth (140), wherein two shielding cloths (140) are respectively fixedly connected to the outer walls on both sides of the support block (130), and the shielding cloth (140) is movably connected between the inside of the slide groove of the pillar (12) and the inside of the workbench (11). A track (142) is fixedly connected to the top of the workbench (11) near the outer wall of the clamping plate (2), and a slider (141) is fixedly connected to the end where the shielding cloth (140) passes through the outer wall of the workbench (11), and the slider (141) is movably connected to the inside of the track (142).

5. The quartz boat welding device for solar silicon wafers according to claim 4, characterized in that: The shielding cloth (140) is made of soft fireproof material.

6. The quartz boat welding device for solar silicon wafers according to claim 2, characterized in that: The clamping assembly (21) comprises a cylinder (210), wherein two cylinders (210) are respectively fixedly connected to the top of the workbench (11) near the outer walls on both sides of the pillar (12), the piston rod ends of the cylinders (210) are fixedly connected to clamp blocks (211), one side of the outer wall of the clamp block (211) is fixedly connected to a bracket (212) near the end, and the top of the clamp block (211) is fixedly connected to a vertical rod (217) near the other end, and the vertical rod (217) is movably connected to the two support plates (136). The support (212) is movably connected to a telescopic rod (213), the telescopic rod (213) is movably connected to a roller (214) near one end thereof, the telescopic rod (213) is fixedly connected to a long rod (215) near the other end thereof, the long rod (215) is movably connected to the support (212), the end of the long rod (215) passing through the support (212) is fixedly connected to a gear (216), and the gear (216) is connected to the outer wall of the rack (135) through its teeth.

7. The quartz boat welding device for solar silicon wafers according to claim 6, characterized in that: The telescopic rod (213) comprises a thick rod (2130), the thick rod (2130) being movably connected to the inside of the bracket (212), a long rod (215) being fixedly connected to the inside of the thick rod (2130) near the end, a thin rod (2131) being movably connected to the inside of the thick rod (2130), the thin rod (2131) passing through the inside of the thick rod (2130) and being movably connected to a roller (214) near the end, and an elastic member (2132) being fixedly connected between one end of the thin rod (2131) and the inside of the thick rod (2130).

8. A welding method for operating the quartz boat welding device for solar silicon wafers as described in claims 1 to 9, characterized in that: The method comprises the following steps: S1. First, a quartz boat is placed on the top of a workbench (11), at a position between a clamping assembly (21) and a clamping plate (2). The quartz boat is fixed between the outer wall of the clamping plate (2) and the top of the workbench (11) by extending and retracting the clamping assembly (21). Meanwhile, impurities on the surface of the quartz boat are rubbed during the clamping process. The extension and retraction of the clamping assembly (21) can also drive the welding assembly (13) to stretch, thereby positioning and adjusting the welding position. S2, the welding height of the quartz boat is adjusted by moving the welding assembly (13) up and down, so that the welding assembly (13) can be conveniently moved close to the surface of the quartz boat for welding. At the same time, the protection assembly (14) can be driven to move between the support (12) and the inside of the workbench (11), so that the protection assembly (14) is pushed out from the inside of the workbench (11) and blocked at the outer wall of the clamping plate (2), thereby shielding the sparks splashing from the quartz boat during the welding process; S3. When the welding component (13) moves up and down, it can also drive the clamping component (21) to rotate, thereby preventing the clamping component (21) from blocking the surface of the quartz boat during welding and affecting the welding effect, and making the clamping component (21) rub against the surface of the protective component (14) to remove the stains remaining on the protective component (14), thereby preventing the flame from splashing onto the protective component (14) during welding and igniting the stains to cause a fire.

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