Device and method for manufacturing lower edge skin and half rod of silicon rod

Abstract

The invention relates to the field of crystal bar machining equipment, in particular to a device and a method for machining lower edge skins and half bars of silicon bars, the device comprises a rack and a transfer device, the transfer device comprises a moving frame, a first clamping mechanism and a second clamping mechanism, the first side of the moving frame is provided with the first clamping mechanism, and the second side of the moving frame is provided with the second clamping mechanism; the movable frame is rotationally arranged on the rack and can move along the length of the rack; the method adopts the device. The first clamping mechanism and the second clamping mechanism of the transfer device are arranged on the moving frame, so that the silicon rod clamping mechanism and the edge and half rod clamping mechanism can be prevented from being independently arranged, the equipment structure is simplified, and the spatial arrangement is optimized; through the movement of the transfer device and the pressing of the first clamping mechanism on the upper and lower end faces of the edge pieces or half rods of the silicon rods, the rapid transfer of the edge pieces or half rods of the silicon rods is realized.

Description

Technical Field

[0001] This invention relates to the field of crystal rod processing equipment, and more particularly to an apparatus and method for producing a silicon rod bottom edge and a half rod. Background Technology

[0002] In silicon ingot processing, a loading and transfer device is needed to transport the silicon ingot to the cutting position. After the silicon ingot is cut, a scrap or half-ingot unloading device is needed to transfer the scrap or half-ingot from the cutting position to the unloading device for unloading. However, in existing technologies, the structure for loading and clamping silicon ingots and the mechanism for unloading scrap or half-ingots are often separate designs, requiring two sets of equipment for operation. This results in a complex overall machine structure and a large space requirement for equipment installation. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a device for the lower edge and half of silicon rods that improves the existing silicon rod processing, which is complicated in terms of equipment structure and space occupation due to the separate arrangement of silicon rod loading clamping and edge and half rod unloading clamping.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: a device for the lower edge skin and half rod of a silicon rod, including a frame and a transfer device, wherein the transfer device includes a movable frame, a first clamping mechanism and a second clamping mechanism, wherein the movable frame is provided with a first clamping mechanism for clamping the edge skin and half rod on a first side, and a second clamping mechanism for clamping the silicon rod on a second side; the movable frame is rotatably mounted on the frame and can move along the length of the frame.

[0005] It also includes a method for producing a silicon rod bottom edge skin and a half rod, using the aforementioned apparatus for producing a silicon rod bottom edge skin and a half rod, the steps of which are as follows: S1. The transfer device moves along the length of the frame toward the silicon rod cutting position; S2, The first and second ends of the first clamping mechanism press against the edge skin or the upper and lower end faces of the silicon rod. S3. The transfer device moves away from the silicon rod cutting position along the length of the frame. The beneficial effects of this invention are as follows: by setting the first clamping mechanism and the second clamping mechanism of the transfer device on the moving frame, it is possible to avoid setting separate silicon rod clamping mechanisms and edge and half rod clamping mechanisms, simplifying the equipment structure and optimizing the space layout; in use, the first clamping mechanism or the second clamping mechanism can be switched by rotating the moving frame, and then the silicon rod clamping and loading or edge and half rod clamping and unloading can be realized by moving along the length direction of the frame; by moving the transfer device and pressing the upper and lower end faces of the edge or half rod of the silicon rod with the first clamping mechanism, the edge or half rod of the silicon rod can be quickly transferred. Attached Figure Description

[0006] Figure 1This is a schematic diagram illustrating the structure of the device for the lower edge skin and half-rod of a silicon rod, as described in a specific embodiment of the present invention, in conjunction with a silicon rod cutting device. Figure 2 This is a schematic diagram of the transfer device of the silicon rod lower edge skin and half rod device according to a specific embodiment of the present invention; Figure 3 This is a schematic diagram of the transfer device of the silicon rod lower edge skin and half rod according to a specific embodiment of the present invention from another perspective. Figure 4 This is a schematic diagram of the first clamping mechanism of the transfer device for the silicon rod lower edge skin and half rod device according to a specific embodiment of the present invention. Figure 5 This is a schematic diagram of the unloading rack structure of the device for the lower edge skin and half rod of the silicon rod according to a specific embodiment of the present invention; Label Explanation: 1. Frame; 2. Transfer device; 21. Moving frame; 22. First clamping mechanism; 221. Fixed jaw; 222. Moving jaw; 223. Moving jaw moving frame; 224. Lifting cylinder; 23. Second clamping mechanism; 3. Edge unloading device; 4. Half-bar unloading device. Detailed Implementation

[0007] To explain in detail the technical content, objectives, and effects of the present invention, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0008] Please refer to Figures 1 to 5 An apparatus for handling the lower edge skin and half-rod of a silicon rod includes a frame 1 and a transfer device 2. The transfer device 2 includes a movable frame 21, a first clamping mechanism 22 and a second clamping mechanism 23. The movable frame 21 has a first clamping mechanism 22 for clamping the edge skin and half-rod on a first side and a second clamping mechanism 23 for clamping the silicon rod on a second side. The movable frame 21 is rotatably mounted on the frame 1 and can move along the length of the frame 1.

[0009] As can be seen from the above description, the beneficial effects of the present invention are as follows: by setting the first clamping mechanism 22 and the second clamping mechanism 23 on the moving frame 21, it is possible to avoid setting separate silicon rod clamping mechanism and edge and half rod clamping mechanism, simplifying the equipment structure and optimizing the space layout; in use, the first clamping mechanism 22 or the second clamping mechanism 23 can be switched by rotating the moving frame 21, and then the silicon rod clamping and feeding or edge and half rod clamping and unloading can be realized by moving along the length direction of the frame 1.

[0010] Furthermore, the first clamping mechanism 22 includes a fixed jaw 221, a movable jaw 222, and a movable jaw moving frame 223. The movable jaw moving frame 223 is provided on both sides of the frame 1 in the width direction. The fixed jaw 221 is provided on the bottom side of the movable jaw moving frame 223, and the movable jaw 222 is movable along the length direction of the movable jaw moving frame 223.

[0011] As described above, the fixed jaw 221 of the first clamping mechanism 22 is fixed to the lower side of the movable jaw moving frame 223. When it is necessary to clamp the edge skin or half rod, the fixed jaw 221 and the movable jaw 222 can clamp the upper and lower end faces of the edge skin or half rod by moving the movable jaw 222 along the movable jaw moving frame 223. Specifically, the movable jaw moving frame 223 is equipped with a rodless cylinder for driving the movement of the movable jaw 222.

[0012] Furthermore, the first clamping mechanism 22 also includes a lifting cylinder 224, the driving end of which is connected to the moving claw moving frame 223 so that it moves along the height direction of the frame 1.

[0013] As described above, the lifting cylinder 224 can be used to lift the moving claw frame 223, which can lift the half bar away from the cutting clamping mechanism below it during the unloading process of the half bar, thus facilitating subsequent transfer.

[0014] Furthermore, the two moving claw frames 223 are movable along the width direction of the frame 1.

[0015] As described above, the movable setting of the movable claw moving frame 223 can adjust the position of the movable claw 222 and the fixed claw 221 on the two movable claw moving frames 223, so as to adjust the pressing position of the edge skin or half bar as needed to ensure sufficient pressing area.

[0016] Furthermore, it also includes an unloading device, which includes a side skin unloading device 3 and a half rod unloading device 4, which are arranged on one side of the frame 1.

[0017] As can be seen from the above description, the edge unloading device 3 and the half rod unloading device 4 are set up to classify and unload the edge and half rod on the transfer device 2 respectively.

[0018] A method for producing a silicon rod bottom edge skin and a half rod, using the aforementioned apparatus for producing a silicon rod bottom edge skin and a half rod, includes the following steps: S1. The transfer device 2 moves along the length of the frame 1 toward the silicon rod cutting position; S2, the first end and the second end of the first clamping mechanism 22 press the edge skin or the upper and lower end faces of the silicon rod. S3, the transfer device 2 moves away from the silicon rod cutting position along the length of the frame 1.

[0019] As can be seen from the above description, the beneficial effect of the present invention is that the rapid transfer of the silicon rod edge or half rod is achieved by the movement of the transfer device 2 and the pressing of the upper and lower end faces of the silicon rod edge or half rod by the first clamping mechanism 22.

[0020] Furthermore, S2 also includes the following steps: After the first end of the first clamping mechanism 22 presses against the upper end face of the edge of the silicon rod, the device on the silicon rod used to press against the edge of the silicon rod during cutting is released. The transfer device 2 moves away from the silicon rod cutting position along the length of the frame 1 to perform preliminary separation of the edge skin; Then the transfer device 2 moves along the length of the frame 1 toward the silicon rod cutting position, and the first end and the second end of the first clamping mechanism 22 press against the upper and lower end faces of the edge skin of the silicon rod, respectively.

[0021] As described above, the movement of the transfer device 2 after the first end of the first clamping mechanism 22 presses the upper end of the edge skin of the silicon rod opens the upper end of the edge skin at a certain angle, thereby breaking its adhesion with the core rod, so as to avoid direct separation that would cause the edge skin to stick together and affect the molding effect of the core rod.

[0022] Furthermore, S2 also includes the following steps: After the first and second ends of the first clamping mechanism 22 press the upper and lower end faces of the silicon rod half, the device on the silicon rod used to press the silicon rod half during cutting is released. The first clamping mechanism 22 is raised to lift the half rod away from the clamping structure used to hold the lower end of the silicon rod during cutting.

[0023] As can be seen from the above description, the first clamping mechanism 22 lifts the upper and lower end faces of the half rod after clamping to avoid interference from the clamping mechanism holding the lower end of the silicon rod during cutting.

[0024] Furthermore, S2 also includes the following steps: After the first end of the first clamping mechanism 22 presses against the upper end face of the half-bar of the silicon rod, the first end of the first clamping mechanism 22 releases pressure and remains in contact with the upper end face of the half-bar; the device on the silicon rod used to press against the upper end face of the half-bar of the silicon rod during cutting remains pressed. The first clamping mechanism 22 adjusts the clamping position of the first end on the upper end face of the half of the silicon rod, and then the first end and the second end of the first clamping mechanism 22 clamp the upper and lower end faces of the half of the silicon rod; the device on the silicon rod used to clamp the upper end face of the half of the silicon rod during cutting is released. The first clamping mechanism 22 is raised to lift the half rod away from the clamping structure used to hold the lower end of the silicon rod during cutting.

[0025] As described above, the device used to press the upper end of the silicon rod half during cutting and the remaining space at the upper end of the silicon rod half may be narrow due to the compact design, making it difficult for the first end of the first clamping mechanism 22 to avoid interference when pressing the upper end of the silicon rod half. Therefore, the restricted space can be avoided by adjusting the pressing position of the first end of the first clamping mechanism 22, while ensuring sufficient pressing area.

[0026] To ensure the adjustment of the first clamping mechanism 22, the first end of the first clamping mechanism 22 needs to be depressurized to prevent it from causing the silicon rod to shift during the adjustment process.

[0027] Furthermore, S2 also includes the following steps: The first clamping mechanism 22 separates the clamped edge skin or half rod.

[0028] As described above, after the first clamping mechanism 22 clamps the edge skin or half rod, it separates them to achieve the peeling of the edge skin from the core rod and the complete separation between the half rods. At the same time, it prepares for the subsequent unloading work and adapts to the different intervals of the subsequent unloading station.

[0029] Please refer to Figures 1 to 5 Embodiment 1 of the present invention is as follows: An apparatus for handling the lower edge skin and half of a silicon rod includes a frame 1, a transfer device 2, and an unloading device. The transfer device 2 includes a movable frame 21, a first clamping mechanism 22, and a second clamping mechanism 23. The movable frame 21 has a first clamping mechanism 22 on a first side for clamping the edge skin and half of the rod, and a second clamping mechanism 23 on a second side for clamping the silicon rod. The movable frame 21 is rotatably mounted on the frame 1 and is movable along the length of the frame 1.

[0030] Specifically, the first clamping mechanism 22 includes a fixed jaw 221, a movable jaw 222, a movable jaw moving frame 223, and a lifting cylinder 224. The movable jaw moving frame 223 is located on both sides of the frame 1 in the width direction. The fixed jaw 221 is located on the bottom side of the movable jaw moving frame 223, and the movable jaw 222 is movable along the length direction of the movable jaw moving frame 223. The drive end of the lifting cylinder 224 is connected to the movable jaw moving frame 223 to move it along the height direction of the frame 1.

[0031] The unloading device includes a side skin unloading device 3 and a half rod unloading device 4, which are arranged on one side of the frame 1.

[0032] Example 2: A method for obtaining a silicon rod underside sheet, employing the apparatus for obtaining the silicon rod underside sheet and half rod as described in Example 1, includes the following steps: S1. After the silicon rod is cut, the cutting wheel system is unloaded, the transfer device 2 keeps the first clamping mechanism 22 facing the silicon rod cutting position, and the two moving claws 223 on the first clamping mechanism 22 move along the width direction of the frame 1 to the maximum position or the specified position. Then the transfer device 2 moves along the length of the frame 1 toward the silicon rod cutting position to ensure that the centerline position of the first clamping mechanism 22 (the symmetrical axis position between the two moving claws 222 transfer frames on the side of the first clamping mechanism 22 facing the silicon rod cutting position) is roughly aligned with the centerline of the core rod (deviation ≤ 5mm). At this time, the fixed claw 221 and the moving claw 222 of the first clamping mechanism 22 are completely located outside the core rod in the height direction of the frame 1. Then the moving claw moving frame 223 moves along the width direction of the frame 1, so that the front ends of the fixed claw 221 and the moving claw 222 (the front end of the fixed claw 221 is the end of the fixed claw 221 opposite to the other fixed claw 221, and the front end of the moving claw 222 is the end of the moving claw 222 opposite to the other moving claw 222) are located at the edge of the cutting seam on the silicon rod. S2, The moving claw 222 of the first clamping mechanism 22 moves along the moving claw moving frame 223 to the upper end face of the pressing edge skin; The device on the silicon rod that is used to clamp the edge of the silicon rod during cutting is released, loosening the clamping on the edge; The transfer device 2 moves 1-2 mm away from the silicon rod cutting position along the length of the frame 1, and opens the upper end of the edge skin at a certain angle to break its adhesion to the core rod, thus performing preliminary separation of the edge skin. The lifting cylinder 224 drives the moving claw moving frame 223 to lift up so that the fixed claw 221 presses upward against the lower end face of the edge skin; The moving claw 222 maintains pressure on the upper surface of the edge skin, thus completing the pressure on the upper and lower surfaces of the edge skin; The moving jaws 223 move away from each other so that the edge skin held by the fixed jaws 221 and the moving jaws 222 on one side moves away from the core bar, thereby completely peeling the edge skin off the core bar; S3. The transfer device 2 moves along the length of the frame 1 away from the silicon rod cutting position to the edge unloading device 3 of the frame 1. The transfer device 2 rotates so that the first clamping mechanism 22 faces the edge unloading device 3 to unload the edge.

[0033] Example 3: A method for producing a lower half of a silicon rod, employing the apparatus for the lower edge skin and half of the silicon rod described in Example 1, includes the following steps: S1. After the silicon rod is cut, the cutting wheel system is unloaded, the transfer device 2 keeps the first clamping mechanism 22 facing the silicon rod cutting position, and the two moving claws 223 on the first clamping mechanism 22 move along the width direction of the frame 1 to the maximum position or the specified position. Then the transfer device 2 moves along the length of the frame 1 toward the silicon rod cutting position to ensure that the centerline position of the first clamping mechanism 22 (the symmetrical axis position between the two moving claws 222 transfer frames on the side of the first clamping mechanism 22 facing the silicon rod cutting position) is roughly aligned with the centerline of the core rod (deviation ≤ 5mm). At this time, the fixed claw 221 and the moving claw 222 of the first clamping mechanism 22 are completely located outside the core rod in the height direction of the frame 1. Then the moving claw moving frame 223 moves along the width direction of the frame 1, so that the front ends of the fixed claw 221 and the moving claw 222 (the front end of the fixed claw 221 is the end of the fixed claw 221 opposite to the other fixed claw 221, and the front end of the moving claw 222 is the end of the moving claw 222 opposite to the other moving claw 222) extend beyond the outermost edge of the half bar; S2, The moving claw 222 of the first clamping mechanism 22 moves along the moving claw moving frame 223 to the upper end face of the clamping half rod; The device on the silicon rod that is used to clamp the upper end face of the half rod during cutting is released, loosening the clamping on the upper end face of the half rod. The lifting cylinder 224 drives the moving claw moving frame 223 to lift up so that the fixed claw 221 presses against the lower end face of the half rod, while the moving claw 222 keeps pressing against the upper end face of the half rod, thus completing the pressing of the upper and lower end faces of the half rod. The lifting cylinder 224 continuously operates to lift the half rod away from the clamping structure used to hold the lower end of the silicon rod during cutting. The movable jaws 223 move away from each other so that the half-bars held by the fixed jaws 221 and the movable jaws 222 separate from each other; S3. The transfer device 2 moves along the length of the frame 1 away from the silicon rod cutting position to the half rod unloading device 4 of the frame 1. The transfer device 2 rotates so that the first clamping mechanism 22 faces the half rod unloading device 4 to unload the half rod.

[0034] Example 4: A method for producing a lower half of a silicon rod, employing the apparatus for the lower edge skin and half of the silicon rod described in Example 1, includes the following steps: S1. After the silicon rod is cut, the cutting wheel system is unloaded, the transfer device 2 keeps the first clamping mechanism 22 facing the silicon rod cutting position, and the two moving claws 223 on the first clamping mechanism 22 move along the width direction of the frame 1 to the maximum position or the specified position. Then the transfer device 2 moves along the length of the frame 1 toward the silicon rod cutting position to ensure that the centerline position of the first clamping mechanism 22 (the symmetrical axis position between the two moving claws 222 transfer frames on the side of the first clamping mechanism 22 facing the silicon rod cutting position) is roughly aligned with the centerline of the core rod (deviation ≤ 5mm). At this time, the fixed claw 221 and the moving claw 222 of the first clamping mechanism 22 are completely located outside the core rod in the height direction of the frame 1. Then the moving claw moving frame 223 moves along the width direction of the frame 1, so that the front ends of the fixed claw 221 and the moving claw 222 (the front end of the fixed claw 221 is the end of the fixed claw 221 opposite to the other fixed claw 221, and the front end of the moving claw 222 is the end of the moving claw 222 opposite to the other moving claw 222) extend beyond the outermost edge of the half bar; S2. The moving jaw 222 of the first clamping mechanism 22 moves along the moving jaw moving frame 223 to press the upper end face of the half rod, and then the moving jaw 222 of the first clamping mechanism 22 releases pressure and remains in contact with the upper end face of the half rod; the device on the silicon rod used to press the upper end face of the half rod during cutting remains pressed. The first clamping mechanism 22 adjusts the clamping position of the movable jaw 222 on the upper end face of the half-bar of the silicon rod by means of the movable jaw moving frame 223 which is movable along the width direction of the frame 1. This causes the fixed jaw 221 and the movable jaw 222 to continue moving a certain distance, such as 10~35mm, towards the center of the core rod. This ensures that the clamping position of the fixed jaw 221 and the movable jaw 222 on the half-bar is sufficient and avoids the narrow space limitation of the device on the silicon rod used to clamp the upper end face of the half-bar of the silicon rod during cutting. Then the moving claw 222 of the first clamping mechanism 22 resumes pressing on the upper end face of the half rod; the device on the silicon rod that is used to press on the upper end face of the half rod during cutting is released, and the pressing on the upper end face of the half rod is released. The lifting cylinder 224 drives the moving claw moving frame 223 to lift up so that the fixed claw 221 presses against the lower end face of the half rod, while the moving claw 222 keeps pressing against the upper end face of the half rod, thus completing the pressing of the upper and lower end faces of the half rod. The lifting cylinder 224 continuously operates to lift the half rod away from the clamping structure used to hold the lower end of the silicon rod during cutting. The movable jaws 223 move away from each other so that the half-bars held by the fixed jaws 221 and the movable jaws 222 separate from each other; S3. The transfer device 2 moves along the length of the frame 1 away from the silicon rod cutting position to the half rod unloading device 4 of the frame 1. The transfer device 2 rotates so that the first clamping mechanism 22 faces the half rod unloading device 4 to unload the half rod.

[0035] In summary, the device and method for handling the lower edge and half of a silicon rod provided by this invention, by setting the first clamping mechanism and the second clamping mechanism of the transfer device on the moving frame, avoids the need to separately set up silicon rod clamping mechanism and edge and half rod clamping mechanism, simplifying the equipment structure and optimizing the space layout; in use, the first clamping mechanism or the second clamping mechanism can be switched by rotating the moving frame, and then the silicon rod can be clamped and loaded or the edge and half rod clamped and unloaded by moving along the length of the frame; by moving the transfer device and pressing the upper and lower end faces of the edge or half rod of the silicon rod with the first clamping mechanism, the edge or half rod of the silicon rod can be quickly transferred.

[0036] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent modifications made based on the content of the present invention specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A device for a silicon rod bottom edge skin and a half rod, characterized in that, The device includes a frame and a transfer device. The transfer device includes a movable frame, a first clamping mechanism and a second clamping mechanism. The movable frame has a first clamping mechanism on a first side for clamping edge skin and half rods, and a second clamping mechanism on a second side for clamping silicon rods. The movable frame is rotatably mounted on the frame and can move along the length of the frame.

2. The apparatus for the lower edge skin and half-rod of a silicon rod according to claim 1, characterized in that, The first clamping mechanism includes a fixed jaw, a movable jaw, and a movable jaw moving frame. The movable jaw moving frame is provided on both sides of the frame width direction. The fixed jaw is provided on the bottom side of the movable jaw moving frame. The movable jaw is moved along the length direction of the movable jaw moving frame.

3. The apparatus for the lower edge skin and half-rod of a silicon rod according to claim 2, characterized in that, The first clamping mechanism further includes a lifting cylinder, the drive end of which is connected to the moving claw frame to move it along the height direction of the frame.

4. The apparatus for the lower edge skin and half-rod of a silicon rod according to claim 2, characterized in that, The two moving claws are movable along the width of the frame.

5. The apparatus for the lower edge skin and half-rod of a silicon rod according to claim 1, characterized in that, It also includes an unloading device, which comprises a side skin unloading device and a half rod unloading device, which are arranged on one side of the frame.

6. A method for producing a silicon rod with a lower edge skin and a half-rod, characterized in that, An apparatus employing the lower edge skin and half-rod of a silicon rod as described in any of claims 1 to 5, comprising the following steps: S1. The transfer device moves along the length of the frame toward the silicon rod cutting position; S2, The first and second ends of the first clamping mechanism press against the edge skin or the upper and lower end faces of the silicon rod. S3. The transfer device moves away from the silicon rod cutting position along the length of the frame.

7. The method for the lower edge skin and half-rod of a silicon rod according to claim 6, characterized in that, S2 also includes the following steps: After the first end of the first clamping mechanism presses against the upper end face of the edge of the silicon rod, the device on the silicon rod used to press against the edge of the silicon rod during cutting is released. The transfer device moves away from the silicon rod cutting position along the length of the frame to perform initial separation of the edge skin; Then the transfer device moves along the length of the frame towards the silicon rod cutting position, and the first end and the second end of the first clamping mechanism press against the upper and lower end faces of the edge skin of the silicon rod, respectively.

8. The method for the lower edge skin and half-rod of a silicon rod according to claim 6, characterized in that, S2 also includes the following steps: After the first and second ends of the first clamping mechanism press the upper and lower end faces of the silicon rod half, the device on the silicon rod used to press the silicon rod half during cutting is released. The first clamping mechanism lifts to remove the half-bar from the clamping structure used to hold the lower end of the silicon rod during cutting.

9. The method for the lower edge skin and half-rod of a silicon rod according to claim 6, characterized in that, S2 also includes the following steps: After the first end of the first clamping mechanism presses against the upper end face of the half-bar of the silicon rod, the first end of the first clamping mechanism releases pressure and remains in contact with the upper end face of the half-bar; the device on the silicon rod used to press against the upper end face of the half-bar of the silicon rod during cutting remains pressed. The first clamping mechanism adjusts the clamping position of the first end on the upper end face of the half of the silicon rod, and then the first end and the second end of the first clamping mechanism press against the upper and lower end faces of the half of the silicon rod; the device on the silicon rod used to press against the upper end face of the half of the silicon rod during cutting is released. The first clamping mechanism lifts to remove the half-bar from the clamping structure used to hold the lower end of the silicon rod during cutting.

10. The method for the lower edge skin and half-rod of a silicon rod according to claim 6, characterized in that, S2 also includes the following steps: The first clamping mechanism separates the clamped edge skin or half rod.

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