Quartz boat welding device and welding method for solar silicon wafers

Abstract

The present invention relates to the technical field of quartz boat welding, and more specifically, to a quartz boat welding device and method for solar silicon wafers, comprising a base, with a workbench fixedly connected to the top of the base. 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 a clamping assembly, while 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, and the welding position is positioned and adjusted on the top of the quartz boat; the welding height of the quartz boat is adjusted by the up and down movement of the welding assembly, and at the same time, the protective assembly can be driven to move between the pillar and the inside of the workbench; the up and down movement of the welding assembly can also drive the clamping assembly to rotate, thereby avoiding obstruction of the quartz boat surface by the clamping assembly during welding, affecting the welding effect, and causing the clamping assembly to rub against the surface of the protective assembly to remove stains remaining on the protective assembly.

Description

Technical Field

[0001] The present 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] Solar wafer quartz boats, also known as photovoltaic quartz boats, are a crucial tool in the production of solar silicon wafers. They are used specifically in the manufacturing of solar cells, particularly for the growth and processing of silicon wafers. Their primary function is to carry, transport, and heat silicon-based materials, ensuring uniform heating during growth and improving solar cell quality.

[0003] Because solar silicon wafers place extremely high demands on the purity and quality of quartz boats, special care must be taken during the welding process to avoid the introduction of impurities and contamination. Therefore, the welding process requires strict control of factors such as temperature, time, and atmosphere to ensure the purity and strength of the welded joints.

[0004] At present, the welding process of ordinary quartz boats has low requirements for the purity and quality of the quartz boats. Since the quartz boats used for solar silicon wafers have extremely high requirements for 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 objectives, one of the objectives of the present invention is to provide a quartz boat welding device for solar silicon wafers, comprising a base, a workbench fixedly connected to the top of the base, a pillar fixedly connected to the top of the workbench near one end, a clamping plate fixedly connected to the top of the workbench near the other end, and two clamping assemblies fixedly connected to the top of the workbench between the pillar and the clamping plate;

[0008] 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 of both sides of the welding assembly, and the protective assemblies are movably connected between the pillar and the interior of the workbench;

[0009] 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.

[0010] As a further improvement of the present technical solution, the welding assembly includes a support block, which is movably connected to the inside of the pillar, and a screw is movably connected to the inside of the support block, and a thick column is fixedly connected to the outer wall of one side of the support block, and a thin column is movably connected to the inside of the thick column, and two protrusions at the end of the thin column are movably connected to the inside of the slide groove on the outer wall of the thick column, and the end of the thin column passing through the thick column is fixedly connected to a vertical plate, and the outer walls on both sides of the vertical plate are fixedly connected to a rack, and the toothed surface of the rack is movably connected to a clamping assembly, and the end of the vertical plate is fixedly connected to two support plates, and 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.

[0011] As a further improvement of the present technical solution, rotating rods are fixedly connected to the outer walls of both sides of the welding head near the top, and the rotating rods are movably connected to the inside of the support plate. One of the ends of the rotating rods passing through the support plate is fixedly connected to a motor.

[0012] As a further improvement of the present technical solution, the protective component includes a shielding cloth, and the two shielding cloths are respectively fixedly connected to the outer walls on both sides of the support block, and the shielding cloth is movably connected between the inside of the pillar slide groove and the inside of the workbench. The top of the workbench is fixedly connected to a track near the outer wall of the splint, and the shielding cloth is fixedly connected to a slider near the end where it passes through the outer wall of the workbench, and the slider is movably connected inside the track.

[0013] As a further improvement of the present technical solution, the shielding cloth is made of a soft fireproof material.

[0014] As a further improvement of the present technical solution, the clamping assembly includes a cylinder, and the two cylinders are respectively fixedly connected to the top of the workbench near the outer walls on both sides of the pillar, the ends of the cylinder piston rods are fixedly connected with clamps, and the outer wall of one side of the clamp is fixedly connected with a bracket near the end, and the top of the clamp is fixedly connected with a vertical rod near the other end, and the vertical rod is movably connected between two support plates, and a telescopic rod is movably connected inside the bracket, and a roller is movably connected inside the telescopic rod near one end, and a long rod is fixedly connected inside the telescopic rod near the other end, and the long rod is movably connected inside the bracket, and 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.

[0015] 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, and a long rod is fixedly connected to the inside of the thick rod near the end, and 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.

[0016] A 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:

[0017] S1. First, place the quartz boat on the top of the workbench, between the clamping assembly and the clamping plate. The clamping assembly is extended and retracted to fix the quartz boat between the outer wall of the clamping plate and the top of the workbench. At the same time, the impurities on the surface of the quartz boat are rubbed during the clamping process. The extension and retraction of the clamping assembly can also drive the welding assembly to stretch and adjust the welding position.

[0018] S2. The welding height of the quartz boat is adjusted by moving the welding assembly up and down, which makes it easier 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 blocked at the outer wall of the splint to block the sparks from the quartz boat during welding.

[0019] S3. While the welding assembly moves up and down, it can also drive the clamping assembly to rotate, thereby avoiding obstruction of the surface of the quartz boat of the clamping assembly during welding, affecting the welding effect, and making the clamping assembly rub against the surface of the protective assembly to remove the remaining stains on the protective assembly, avoiding sparks from splashing onto the protective assembly during welding and igniting the stains to cause a fire.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. In this quartz boat welding device and 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 expansion and contraction of the clamping assembly. At the same time, impurities on the surface of the quartz boat are rubbed during the clamping process. The expansion 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.

[0022] 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 facilitates 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 blocked at the outer wall of the splint, thereby shielding the sparks from the quartz boat during welding and preventing the sparks from splashing onto the face of the workers during operation.

[0023] 3. In the quartz boat welding device and welding method for solar silicon wafers, the up and down movement of the welding assembly can also drive the clamping assembly to rotate, thereby avoiding obstruction of the quartz boat surface of the clamping assembly during welding, affecting the welding effect, and making the clamping assembly rub against the surface of the protective assembly to remove residual stains on the protective assembly, thereby preventing flammable stains on the protective assembly from being ignited by the splashing flames during welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure before welding of the present invention;

[0025] Figure 2 This is a schematic diagram of the overall welding structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the motion path structure before welding of the present invention;

[0027] Figure 4 This is a schematic diagram of the motion path structure during welding of the present invention;

[0028] Figure 5 It is a schematic diagram of the workbench structure of the present invention;

[0029] Figure 6 This is a schematic diagram of the structure of the protection component of the present invention;

[0030] Figure 7 This is a schematic structural diagram of a welding assembly according to the present invention;

[0031] Figure 8 It is a schematic structural diagram of the clamping assembly of the present invention;

[0032] Figure 9 It is a schematic structural diagram of the telescopic rod of the present invention.

[0033] The meaning of each number in the figure is:

[0034] 1. Base; 11. Workbench; 12. Support;

[0035] 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;

[0036] 14. Protective assembly; 140. Shielding cloth; 141. Slider; 142. Track;

[0037] 2. Splint;

[0038] 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 pole. DETAILED DESCRIPTION

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example 1

[0040] See also Figures 1-9 As shown, the present embodiment aims to provide a quartz boat welding device for solar silicon wafers, comprising a base 1, a workbench 11 fixedly connected to the top of the base 1, a pillar 12 fixedly connected to the top of the workbench 11 near one end, a clamping plate 2 fixedly connected to the top of the workbench 11 near the other end, and two clamping assemblies 21 fixedly connected to the top of the workbench 11 between the pillar 12 and the clamping plate 2;

[0041] A welding assembly 13 is movably connected between the interior of the pillar 12 and the clamping assembly 21. The outer walls of both sides of the welding assembly 13 are fixedly connected to the protective assembly 14. The protective assembly 14 is movably connected between the pillar 12 and the interior of the workbench 11.

[0042] 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 on the surface of the protective assembly 14 during the rotation process.

[0043] The improvement of this embodiment is that the quartz boat is placed on the top of the workbench 11, between the clamping assembly 21 and the clamping plate 2, and 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. At the same time, impurities on the surface of the quartz boat are rubbed during the clamping process. 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.

[0044] The welding height of the quartz boat is adjusted by moving the welding assembly 13 up and down, which makes it easier for the welding assembly 13 to approach the surface of the quartz boat for welding. At the same time, it can also drive the protective assembly 14 to move between the pillar 12 and the inside of the workbench 11, so that the protective 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 from the quartz boat during welding and preventing the sparks from splashing onto the face of the workers during operation.

[0045] The up and down movement of the welding assembly 13 can also drive the clamping assembly 21 to rotate, thereby preventing the clamping assembly 21 from blocking the surface of the quartz boat during welding and affecting the welding effect. In addition, the clamping assembly 21 is rubbed against the surface of the protective assembly 14 to remove the remaining stains on the protective assembly 14, thereby preventing any flammable stains on the protective assembly 14 from being ignited by the splashing flames during welding.

[0046] 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. The outer wall of one side of the support block 130 is fixedly connected to a thick column 132. The thick column 132 is movably connected to a thin column 133. The two protrusions at the end of the thin column 133 are movably connected to the inner groove of the outer wall of the thick column 132. The end of the thin column 133 passing through 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 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 of both sides of the support block 130 are fixedly connected to the protective 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 simultaneous downward movement of the thick column 132, the thin column 133, the vertical plate 134, the rack 135, the support plate 136 and the welding head 137. The welding height of the welding head 137 is adjusted to facilitate the welding head 137 to approach the surface of the quartz boat for welding.

[0047] The vertical plate 134 moves downward, driving the rack 135 to move 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 movement of the roller 214 causes friction between its outer wall and 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.

[0048] 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 wall 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, thereby adjusting the welding direction of the welding head 137, facilitating the movement of the welding position during the welding process of the welding head 137, performing linear welding on the quartz boat, and improving the welding quality.

[0049] The two shielding cloths 140 are fixedly connected to the outer walls of the support block 130 on both sides, 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. The top of the workbench 11 is fixedly connected to a track 142 near the outer wall of the splint 2. The shielding cloth 140 passes through the outer wall of the workbench 11 and is fixedly connected to a slider 141 near the end. The slider 141 is movably connected to the inside of the track 142. The shielding cloth 140 moves downward through the support block 130 to drive the shielding cloth 140 to move downward between the support block 12 and the workbench 11, and push it 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 splint 2 and the track 142, shielding the quartz boat welding fire between the splint 2 and the clamping block 211 to prevent the sparks from splashing and causing harm to the staff.

[0050] Among them, 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 fire-proof material. The raw materials of the shielding cloth 140 include acrylic coated glass fiber, silicone, and polyurethane coated glass fiber. By using the silicone hot vulcanizing adhesive MW-109-3B, the silicone is evenly coated 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.

[0051] 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 on 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 to a bracket 212 near the end. The top of the clamping block 211 is fixedly connected to a vertical rod 217 near the other end. The vertical rod 217 is movably connected between the two support plates 136. The interior of the bracket 212 is movably connected with a telescopic rod 213. The interior of the telescopic rod 213 is movably connected with a roller 214 near one end. The interior 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 interior of the bracket 212, and the long rod 215 passes through the bracket 21 2 is fixedly connected to the end of the gear 216, and the gear 216 teeth are connected to the outer wall of the rack 135. The clamping block 211 is pushed to move on the top of the workbench 11 by 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. At the same time, during the movement of the clamping 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. 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.

[0052] 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. The thin rod 2131 passes through the inside of the thick rod 2130 and is movably connected to the roller 214 near the end. 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 is continuously moved and subjected to force, thereby driving the thin rod 2131 to compress the elastic part 2132, so that the elastic part 2132 shrinks between the end of the thin rod 2131 and the inside of the thick rod 2130, making it convenient to shrink the thin rod 2131 inside the thick rod 2130, and adjust the length between the thick rod 2130 and the thin rod 2131 to avoid blockage of the clamping block 211 caused by the length between the thick rod 2130 and the thin rod 2131. At the same time, the rebound force of the elastic part 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

[0053] This embodiment, based on the content provided in Example 1, aims to provide a welding method for a solar silicon wafer using a quartz boat welding device. The specific steps are as follows:

[0054] S1. Place the quartz boat on top of the workbench 11, between the clamping assembly 21 and the clamping plate 2. Use the piston rod of the cylinder 210 to push the clamping block 211 on top of the workbench 11, so that the clamping block 211 moves closer to the clamping plate 2, thereby clamping and fixing the quartz boat between the clamping block 211 and the clamping plate 2.

[0055] S2. During the movement of the clamping 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. 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 impurities on the surface of the quartz boat, thereby improving the welding quality of the quartz boat;

[0056] S3. The motor output shaft drives the screw 131 to rotate, causing the support block 130 to move up and down between the outside of the screw 131 and the inner wall of the pillar 12. The support block 130 moves downward, thereby driving the thick pillar 132, the thin pillar 133, the vertical plate 134, the rack 135, the support plate 136, and the welding head 137 to move downward simultaneously. The welding height of the welding head 137 is adjusted to facilitate the welding head 137 to approach the surface of the quartz boat for welding.

[0057] 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, thereby improving the welding quality.

[0058] S5. When the support block 130 moves downward, it drives the shielding cloth 140 downward, drives the shielding cloth 140 to move between the support 12 and the workbench 11, and pushes it 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, shielding the quartz boat welding flames between the clamping plate 2 and the clamping block 211, and preventing the flames from splashing and causing harm to the workers;

[0059] S6. When the vertical plate 134 moves downward, it drives the rack 135 downward, causing the toothed surface of the rack 135 to roll on the surface of the gear 216. 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, causing the telescopic rod 213 to rotate inside the bracket 212, driving the roller 214 at the end of the telescopic rod 213 to move against the outer wall of the screen cloth 140. The movement of the roller 214 creates friction between the outer wall of the screen cloth 140 and the outer wall of the screen cloth 140. This friction drives the rotating shaft at the end of the roller 214 to rotate inside the telescopic rod 213, causing the roller 214 to rotate and rub to remove stains on the surface of the screen cloth 140.

[0060] 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, it drives the thin rod 2131 to compress the elastic part 2132, so that the elastic part 2132 shrinks between the end of the thin rod 2131 and the inside of the thick rod 2130, making it convenient to shrink the thin rod 2131 inside the thick rod 2130, and adjust the length between the thick rod 2130 and the thin rod 2131 to avoid the length between the thick rod 2130 and the thin rod 2131 from blocking the clamping of the clamping block 211. At the same time, the rebound force of the elastic part 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.

[0061] 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 to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A quartz boat welding device for solar silicon wafers, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a workbench (11), the top of the workbench (11) is fixedly connected to a pillar (12) near one end thereof, the top of the workbench (11) is fixedly connected to a clamping plate (2) near the other end thereof, and the top of the workbench (11) is fixedly connected to two clamping assemblies (21) located 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), and protective assemblies (14) are fixedly connected to the outer walls on both sides of the welding assembly (13), 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 on the surface of the protective assembly (14) during the rotation process; The clamping assembly (21) includes a cylinder (210), and 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), and the ends of the piston rods of the cylinders (210) are fixedly connected to clamp blocks (211), and the outer wall of one side 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 bracket (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 bracket (212), the end of the long rod (215) passing through the bracket (212) is fixedly connected to a gear (216), and the gear (216) is connected to the outer wall of the rack (135) through teeth. The telescopic rod (213) comprises a thick rod (2130), the thick rod (2130) being movably connected to the interior of the bracket (212), a long rod (215) being fixedly connected to the interior of the thick rod (2130) near the end thereof, a thin rod (2131) being movably connected to the interior of the thick rod (2130), the thin rod (2131) passing through the interior of the thick rod (2130) and being movably connected to a roller (214) near the end thereof, and an elastic member (2132) being fixedly connected between one end of the thin rod (2131) and the interior of the thick rod (2130).

2. The quartz boat welding device for solar silicon wafers according to claim 1, characterized in that: The welding assembly (13) includes a support block (130), the support block (130) is movably connected to the inside of the pillar (12), the support block (130) is movably connected to a screw (131), one side of the outer wall of the support block (130) is fixedly connected to a thick column (132), the thick column (132) is movably connected to a thin column (133), two protrusions at the end of the thin column (133) are movably connected to the inside of the sliding groove on the outer wall of the thick column (132), and the thin column (133) is fixedly connected to 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 protective assembly (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), 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). The top of the workbench (11) is fixedly connected to a track (142) near the outer wall of the splint (2), and the shielding cloth (140) is fixedly connected to a slider (141) near the end where it 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. A welding method for operating a quartz boat welding device for solar silicon wafers according to any one of claims 1 to 5, characterized in that: The method comprises the following steps: S1. First, place the quartz boat on the top of the workbench (11), between the clamping assembly (21) and the clamping plate (2), and fix the quartz boat between the outer wall of the clamping plate (2) and the top of the workbench (11) by extending and retracting the clamping assembly (21). At the same time, 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, by moving the welding assembly (13) up and down to adjust the welding height of the quartz boat, it is convenient for the welding assembly (13) to be close to the surface of the quartz boat for welding. At the same time, it can also drive the protective assembly (14) to move between the support (12) and the inside of the workbench (11), thereby pushing the protective assembly (14) out from the inside of the workbench (11) and blocking it 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 assembly (13) moves up and down, the clamping assembly (21) can also be driven to rotate, thereby preventing the clamping assembly (21) from being blocked by the quartz boat surface during welding, thereby affecting the welding effect, and causing the clamping assembly (21) to rub against the surface of the protective assembly (14) to remove the stains remaining on the protective assembly (14), thereby preventing the flame from splashing onto the protective assembly (14) during welding and igniting the stains to cause a fire.

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