Silicon rod edge material impact crushing device

Abstract

The present invention provides a silicon rod edge material impact crushing device. The present invention comprises a frame and an impact system, a fixing system and a silicon material positioning system arranged on the frame, the fixing system is used to fix the silicon rod edge material to be crushed, the silicon material positioning system is used to press the edge material, the impact system is movably connected to the frame, and the impact system is provided with a plurality of punches for impacting the silicon rod edge material to be crushed near the fixing system side. The present invention can realize automated continuous production, greatly improve the efficiency of edge material crushing, reduce labor costs, and avoid health effects on labor; the present invention uses different materials in key parts, such as tungsten steel for the punch, and non-metallic materials are used for the parts in contact with the silicon material, which effectively avoids the contamination of the silicon material by metal and other impurities.

Description

Technical Field

[0001] The invention relates to the fields of photovoltaic and semiconductor industries, and in particular to a silicon rod edge material impact crushing device. Background Art

[0002] In the photovoltaic industry, with the advancement of technology, the price of solar cell components has dropped significantly, which has put forward higher requirements for the efficiency of each technical link in the entire industrial chain and the high utilization rate of raw materials.

[0003] The solar cell production process includes multiple steps, among which the squaring step is to cut the monocrystalline silicon round rod into square rods. In this process, each square rod produced will produce four edge silicon materials (edge ​​materials) with one curved surface and the other flat surface. In order to make full use of the materials, the edge materials generally need to be broken into blocks of appropriate size and returned to the single crystal pulling process for reuse.

[0004] At present, the process of crushing the edge materials is mainly done manually, that is, using a tungsten steel hammer to manually beat the edge materials to a qualified size. This method consumes a lot of manpower, is inefficient, and is easy to pollute. The dust generated has a great impact on the health of the operators.

[0005] In order to solve the above problems, the present invention develops an automatic scrap material crushing device, which uses mechanical impact to crush scrap materials into required specifications at one time. The device can be manually controlled and can also achieve continuous automatic production through program automatic control, effectively improving the scrap material crushing efficiency. Summary of the invention

[0006] In view of the above technical problems, a silicon rod edge material impact crushing device is provided. The technical means adopted by the present invention are as follows:

[0007] A silicon rod edge material impact crushing device comprises: a frame and an impact system, a fixing system and a silicon material positioning system arranged on the frame, wherein the fixing system is used to fix the silicon rod edge material to be crushed, the silicon material positioning system is used to press the edge material, the impact system is movably connected to the frame, and the impact system is provided with a plurality of punches for impacting the silicon rod edge material to be crushed close to the fixing system side.

[0008] Furthermore, the frame is provided with a bracket and a linear guide rail, the bracket is fixed on both sides of the frame, and is used to support the impact system and the fixing system; the linear guide rail is fixedly connected between the brackets on both sides, and is used to support and guide the impact system during movement.

[0009] Furthermore, the impact system includes a movable punch, a movable punch back plate, an impact cylinder and an impact cylinder bracket, a plurality of movable punches are evenly fixed on the movable punch back plate, the movable punch back plate can reciprocate on a linear guide rail, the movable punch back plate is fixedly connected to the impact cylinder, the impact cylinder is fixed on the cylinder bracket, and the cylinder bracket is fixed on the frame.

[0010] Furthermore, the fixing system includes a tungsten steel plate with an arc surface. The fixing system includes a fixed punch and a fixed punch back plate, a plurality of fixed punches are evenly fixed on the fixed punch back plate, and each fixed punch has a preset length, so that the top surface of all punches forms an arc surface that matches the circular surface of the edge skin material.

[0011] Furthermore, the movable punch back plate is covered with a non-metallic movable punch back plate protection plate on the side facing the edge skin material crushing area, and the fixed punch back plate is covered with a non-metallic fixed punch back plate protection plate on the side facing the edge skin material crushing area.

[0012] Furthermore, a non-metallic edge material protection plate is provided in the fixed punch arrangement area of ​​the fixed punch back plate, and the edge material protection plate is provided with an arc surface with the same arc as the arc surface of the punch top surface.

[0013] Furthermore, the silicon material positioning system includes a movable pressing plate and a pressing plate cylinder, the movable pressing plate is provided with a through hole larger than the movable punch, the movable pressing plate is connected to the linear guide rail, both sides of the movable pressing plate are connected to the pressing plate cylinder, and the pressing plate cylinder is fixed on the frame.

[0014] Furthermore, the materials of the movable punch back plate protection plate, the fixed punch back plate protection plate, the edge material protection plate, the movable pressing plate and the linear guide rail include but are not limited to PP, PU, ​​POM, PC, ABS resin materials.

[0015] Furthermore, a material receiving device is provided between the impact system and the fixing system, the material receiving device comprises a conveying structure and a material receiving box arranged thereon, the frame is provided with a discharge port, and the top of the material receiving box matches the discharge port.

[0016] The present invention has the following advantages:

[0017] 1. The present invention can realize automatic continuous production, greatly improve the efficiency of edge material crushing, reduce labor costs, and avoid health effects on workers;

[0018] 2. The present invention uses different materials in key parts, such as tungsten steel for the punch, and non-metallic materials for the parts in contact with silicon material, which effectively avoids the contamination of silicon material by metal and other impurities (silicon material is sensitive to metal ions). BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 It is a front view of an embodiment of the present invention.

[0021] Figure 2 It is a top view of an embodiment of the present invention.

[0022] In the figure: 1. frame; 2. cylinder bracket; 3. impact cylinder; 4. bracket; 5. movable pressure plate; 6. linear guide; 7. fixed punch back plate protection plate; 8. movable punch back plate; 9. movable punch; 10. edge material protection plate; 11. fixed punch; 12. supporting roller group; 13. movable punch back plate protection plate; 14. fixed punch back plate; 15. material receiving device; 16. pad; 17. pressure plate cylinder. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

[0024] like Figure 1 , Figure 2 As shown, this embodiment discloses a silicon rod edge material impact crushing device, including a frame 1 and an impact system, a fixing system and a silicon material positioning system arranged on the frame, the fixing system is used to fix the silicon rod edge material to be crushed, the silicon material positioning system is used to press the edge material, the impact system is movably connected to the frame, and the impact system is provided with a plurality of punches for impacting the silicon rod edge material to be crushed close to the fixing system side.

[0025] The frame 1 is provided with a bracket 4 and a linear guide 6. The bracket 4 is fixed on both sides of the frame 1, and is used to support the impact system and the fixing system; the linear guide 6 is fixedly connected between the brackets 4 on both sides, and is used to support and guide the impact system during movement.

[0026] The impact system includes a mobile punch, a mobile punch back plate, an impact cylinder and an impact cylinder bracket. A number of mobile punches 9 are evenly fixed on the mobile punch back plate. The mobile punch back plate 8 can reciprocate on the linear guide 6. The mobile punch back plate 8 is fixedly connected to the impact cylinder 3. The impact cylinder 3 is fixed on the cylinder bracket 2, and the cylinder bracket 2 is fixed on the frame 1. The mobile punch back plate 8 is covered with a non-metallic mobile punch back plate protection plate 13 on the side facing the edge skin crushing area. In this embodiment, the mobile punch 9 is made of tungsten steel, the lower part is cylindrical, the top is semi-spherical or conical, and the cylinder diameter is 15-30mm. The mobile punches are evenly distributed on the mobile punch back plate, with a center spacing of 20-50mm. The four punches can be arranged in a square vertex arrangement or a diamond vertex arrangement. The tail of the punch is a threaded structure and can be fixed on the mobile punch back plate 8 by fastening screws. The mobile punch back plate 8 is made of tungsten steel or stainless steel. Linear bearings are installed on the four corners of the mobile punch back plate 8, which can reciprocate on the linear guide 6.

[0027] The fixing system can adopt two schemes. The fixing system of scheme A includes a tungsten steel plate with a curved surface.

[0028] The fixing system of scheme B includes a fixed punch and a fixed punch back plate. Several fixed punches 11 are evenly fixed on the fixed punch back plate 14. Each fixed punch 11 has a preset length so that the top surface of all fixed punches 11 forms an arc surface that matches the circular surface of the edge skin material. The fixed punch back plate 14 is covered with a non-metallic fixed punch back plate protection plate 7 on the side facing the edge skin material crushing area. The fixed punch 11 is made of tungsten steel, the lower part is cylindrical, the top is semi-spherical or conical, and the cylinder diameter is 15-30mm. The fixed punches are evenly distributed on the fixed punch back plate, with a center spacing of 20-50mm. The four punches can be arranged in a square vertex arrangement or a diamond vertex arrangement. The tail of the punch is a threaded structure, which can be fixed to the fixed punch back plate 14 by tightening screws. The fixed punch back plate 14 is made of tungsten steel or stainless steel.

[0029] A non-metallic edge material protection plate 10 is provided in the fixed punch 11 arrangement area of ​​the fixed punch back plate 14. The edge material protection plate is provided with an arc surface with the same arc as the arc surface of the punch top surface.

[0030] The silicon material positioning system includes a moving platen and a platen cylinder. The moving platen 5 is provided with a through hole larger than the moving punch 9 so that the moving punch 9 can pass through. The moving platen 5 is connected to the linear guide rail. Specifically, the four corners of the moving platen are connected to the linear guide rail, and the linear guide rail can reciprocate through the linear bearing fixed on the back plate of the moving punch. Both sides of the moving platen are connected to the platen cylinder 17, and the platen cylinder is fixed on the frame. The reciprocating motion of the platen cylinder drives the reciprocating motion of the moving platen.

[0031] Since silicon materials are relatively sensitive to metal ions, as a preferred implementation, the materials of the movable punch back plate protection plate, the fixed punch back plate protection plate, the edge material protection plate, the movable pressure plate and the linear guide rail include but are not limited to PP, PU, ​​POM, PC, ABS resin materials, which can effectively prevent metal from contaminating the silicon material.

[0032] A material receiving device 15 is provided between the impact system and the fixing system. The material receiving device includes a conveying structure and a material receiving box arranged thereon. The frame is provided with a discharge port. The top of the material receiving box matches the discharge port. A pad 16 is provided at the bottom of the frame to reduce the impact of the vibration of the impact system on the ground.

[0033] The method of using the present invention is as follows: when in use, the edge material can be slid to the edge material crushing position by manual or mechanical hands through the edge material supporting roller group 12, and then the pressure plate cylinder is started to make the pressure plate close to the edge material, fix the edge material and position it; then the impact cylinder is started to push the back plate with the impact punch to move quickly, and the impact punch is used to impact the edge material by impact force and inertia. Under the joint action of the punches on both sides, the edge material is crushed into a predetermined particle size. Then the back plate and the pressure plate are reset, and the crushed edge material blocks pass through the discharge port on the frame and fall into the receiving box, and then are transported to the next process through the roller.

[0034] The above work process can be controlled by an automatic control program to achieve automated continuous production and greatly improve efficiency.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A silicon rod edge material impact crushing device, characterized in that: It comprises a frame and an impact system, a fixing system and a silicon material positioning system arranged on the frame, wherein the fixing system is used to fix the silicon rod edge skin to be broken, the silicon material positioning system is used to press the edge skin, the impact system is movably connected to the frame, and the impact system is provided with a plurality of punches for impacting the silicon rod edge skin to be broken close to the fixing system; The frame is provided with a bracket and a linear guide rail, wherein the bracket is fixed on both sides of the frame and is used to support the impact system and the fixing system; the linear guide rail is fixedly connected between the brackets on both sides and is used to support and guide the impact system during movement; The impact system includes a mobile punch, a mobile punch back plate, an impact cylinder and an impact cylinder bracket, a plurality of mobile punches are evenly fixed on the mobile punch back plate, the mobile punch back plate can reciprocate on a linear guide rail, the mobile punch back plate is fixedly connected to the impact cylinder, the impact cylinder is fixed on the cylinder bracket, and the cylinder bracket is fixed on the frame, and the mobile punch back plate is covered with a non-metallic mobile punch back plate protection plate on the side facing the edge skin material crushing area; The fixing system includes a tungsten steel plate with an arc surface, or includes a fixed punch and a fixed punch back plate, a plurality of fixed punches are evenly fixed on the fixed punch back plate, each fixed punch has a preset length, so that the top surface of all fixed punches forms an arc surface that matches the circular surface of the edge skin material, and the fixed punch back plate is covered with a non-metallic fixed punch back plate protection plate on the side facing the edge skin material crushing area; A non-metallic edge material protection plate is provided in the fixed punch arrangement area of ​​the fixed punch back plate, and the edge material protection plate is provided with an arc surface with the same arc as the arc surface of the punch top surface; The silicon material positioning system includes a movable pressing plate and a pressing plate cylinder. The movable pressing plate is provided with a through hole larger than the movable punch. The movable pressing plate is connected to the linear guide rail. Both sides of the movable pressing plate are connected to the pressing plate cylinder. The pressing plate cylinder is fixed on the frame.

2. The silicon rod edge material impact crushing device according to claim 1, characterized in that: The materials of the movable punch back plate protection plate, the fixed punch back plate protection plate, the edge material protection plate, the movable pressing plate and the linear guide rail include PP, PU, ​​POM, PC, and ABS resin materials.

3. The silicon rod edge material impact crushing device according to claim 1, characterized in that: A material receiving device is provided between the impact system and the fixing system. The material receiving device comprises a conveying structure and a material receiving box arranged thereon. The frame is provided with a discharge port, and the top of the material receiving box matches the discharge port.

Images