Silicon rod cutting method and silicon rod cutting machine

Abstract

A silicon rod cutting method, comprising: acquiring head and tail rods, which have specific square-root dimensions and have a cross section in the shape of a rectangle with circular arcs, and cutting, along two ends of each of two longer cutting lines (911), each of the head and tail rods to obtain a square main material (92) in the middle and side materials (93) on two sides; using a cutting plane perpendicular to the axis of the combined silicon rod to cut the square main material (92) into a first half rod (95) and a second half rod (94), and using two cutting planes, which coincide with two ends of a shorter cutting line (912) and are perpendicular to the shorter cutting line (912), to cut the two side materials (93) at the same time to obtain two side half rods (96); and selecting the first half rod (95) to serve as a qualified product, and using the second half rod (94) and the two side half rods (96) in a downgraded manner. By means of the method, for each of head and tail rods, an available side half rod (96) can be additionally obtained, and the thickness of each half rod increases by about 30%, thereby greatly increasing the comprehensive utilization rate of the head and tail rods. Further provided is a silicon rod cutting machine. Using the silicon rod cutting machine for machining head and tail rods can also greatly increase the comprehensive utilization rate of the head and tail rods.

Description

Silicon rod cutting method and silicon rod cutting machine Technical Field

[0001] The present invention relates to the technical field of silicon rod processing, and in particular to a silicon rod cutting method and a silicon rod cutting machine. Background Art

[0002] After further processing, silicon ingots are primarily used in fields such as semiconductors and solar cells. Crystal pulling is the primary process in silicon ingot production, where single silicon crystals are pulled from liquid silicon into a small-diameter, long rod-shaped crystal. These rods have conical ends, with a head and tail. For solar cell applications, the head and tail (the conical ends) are first removed. After removing the head and tail, the original silicon ingot has approximately 100mm of carbon / oxygen content at each end, making it unusable as qualified product.

[0003] For example, for a raw silicon rod with a diameter of 252mm, about 100mm of the head rod and tail rod parts need to be cut off at both ends. The head rod or tail rod with a length of 100mm can only be cut into a half rod with a thickness of 100mm (the silicon block used for half-cell battery, with a size of 210mmx105mm), and can only be used as a downgraded product (its efficiency is lower than that of normal qualified products, and it is used to produce lower-grade products). Even if the remaining part is used as a downgraded product, it cannot meet the size requirements of the standard half rod and can only be used as recycled material. Therefore, the effective utilization rate of the head rod and tail rod of this type of silicon rod is relatively low, making the cost relatively high.

[0004] Therefore, researchers of the present applicant believe that it is necessary to improve or optimize the existing silicon rod processing technology in which the effective utilization rate of the head rod and the tail rod is low. Summary of the Invention

[0005] In view of the above, one object of the present invention is to provide a silicon rod cutting method, mainly for the head and tail rods of silicon rods, to improve the utilization rate of the head and tail rods of silicon rods. Another object of the present invention is to provide a silicon rod cutting device, which can effectively improve the utilization rate of the head and tail rods of silicon rods by processing the head and tail rods of silicon rods, thereby reducing costs and achieving greater energy conservation.

[0006] To this end, the present invention provides a silicon rod cutting method for a head rod and / or a tail rod of a silicon rod, the method comprising:

[0007] Obtaining a head rod and / or tail rod, cutting a head rod and a tail rod with a length of 210 mm to 216 mm from each end of the squared composite silicon rod, wherein the composite silicon rod is obtained by square-squaring an original silicon rod with a diameter of 252 mm, and the cross-section of the composite silicon rod consists of four cutting lines and four remaining arcs, wherein both ends of the four cutting lines are extended to form a rectangle after intersecting with adjacent cutting lines, and the distance between the two longer cutting lines of the four cutting lines is 210 mm to 215 mm, and the length of the two shorter cutting lines is 105 mm to 108 mm;

[0008] The first cutting is to cut the head rod and / or tail rod along the two ends of the two longer cutting lines to obtain a square main material in the middle and side materials on both sides;

[0009] The first sorting is to separate the cut square main material from the side materials on both sides;

[0010] The second cutting comprises cutting the square main material into a first half-rod and a second half-rod with a cutting plane perpendicular to the axis of the combined silicon rod, cutting the edge material into edge half-rods with two cutting planes coinciding with the ends of the shorter cutting line and perpendicular to the shorter cutting line, or simultaneously cutting two edge materials into two edge half-rods;

[0011] In the second sorting, the first half ingot is selected. When the first half ingot is in the head ingot or the tail ingot, the position of the first half ingot is adjacent to the middle of the combined silicon ingot.

[0012] Preferably, the length of the head rod and the tail rod respectively cut from both ends of the combined silicon rod is 210 mm to 214 mm, preferably 211 mm to 212 mm.

[0013] Preferably, the distance between the two longer cutting lines of the four cutting lines is 210 mm to 212 mm, and the length of the two shorter cutting lines is 105 mm to 106.8 mm, preferably 211 mm and 106 mm respectively.

[0014] Preferably, in the first cutting, a double-line cutting method is used to cut the head rod and / or tail rod into a square main material in the middle and side materials on both sides at one time.

[0015] Preferably, in the second cutting, the two edge materials are clamped and fixed face to face, and the two edge half rods are cut out at one time by a double-line cutting method.

[0016] In an alternative technical solution, the distance between the two longer cutting lines of the four cutting lines is 210mm~215mm, and the distance between the two shorter cutting lines is 228mm~235mm, preferably 210mm~212mm and 229mm~232mm respectively; in the second cutting, the two cutting surfaces use the rated width to cut out the edge half rod, and the rated width is 105mm~108mm, preferably 105mm~107mm.

[0017] Preferably, the method further comprises: after the second cutting, removing the waste material after the edge material is cut into half rods.

[0018] Preferably, in the second sorting, the second half sticks and the side half sticks are classified into the same category.

[0019] Preferably, obtaining the head rod and the tail rod further includes marking the cut surfaces of the head rod and the tail rod so that the first half rod can be clearly distinguished from the second half rod.

[0020] In a second aspect, the present invention provides a silicon rod cutting machine for cutting head rods and / or tail rods of silicon rods, comprising:

[0021] A machine base having a silicon rod processing platform; the silicon rod processing platform includes a transporting position and a cutting position arranged along a first direction, the transporting position has a track arranged along a second direction, and the cutting position has a loading station and a first cutting station, a flipping station, a second cutting station, and a third cutting station arranged in sequence along the second direction, wherein the first direction and the second direction are perpendicular;

[0022] An incoming material cutting device, provided at the first cutting station, includes a first double-wire saw for cutting the head and tail rods placed vertically at the first cutting station to form a square main material and side materials on both sides; the head and tail rods are head rods or tail rods with a length of 210 mm to 216 mm cut from each end of a composite silicon rod, respectively. The composite silicon rod is formed by squaring an original silicon rod with a diameter of 252 mm, and the cross-section of the composite silicon rod is a rectangle with a rounded arc;

[0023] A loading device, provided at the loading station, capable of delivering the head and tail rods to a position adjacent to the incoming material cutting device;

[0024] A turning device is provided at the turning station, for turning the square main material from a vertical position by 90 degrees to a horizontal position;

[0025] a square material cutting device, provided at the second cutting station, comprising a cutting wire saw for cutting the square main material into a first half rod and a second half rod;

[0026] a scrap cutting device, provided at the third cutting station, comprising a second double-wire cutting wire saw for cutting scrap into scrap halves or simultaneously cutting two scraps into two scrap halves and waste;

[0027] a material removal device for removing the first half rod, the second half rod, the edge half rod, and the waste;

[0028] A transport device is provided on the track, and is used to deliver the head and tail rods and / or the square main material and the side material to the positions corresponding to the first cutting station and / or the flipping station, the second cutting station and the third cutting station, and to deliver the first half rod and the second half rod and the side half rod to the position corresponding to the unloading device.

[0029] Preferably, the distance between the two long straight-line segments of the rounded rectangle is 210mm-215mm, and the length of the two short straight-line segments is 105mm-108mm. Preferably, they are 211mm and 106mm, respectively. Alternatively, the distance between the two long straight-line segments of the rounded rectangle is 210mm-215mm, and the distance between the two short straight-line segments is 228mm-235mm, and the half-rods are cut using a rated width of 105mm-108mm. Preferably, the head and tail rods are head rods or tail rods with lengths of 211mm-213mm cut from each end of the combined silicon rod, the distance between the two long straight-line segments of the rounded rectangle is 210mm-212mm, and the length of the two short straight-line segments is 105mm-107mm; or the distance between the two long straight-line segments of the rounded rectangle is 210mm-212mm, and the distance between the two short straight-line segments is 229mm-232mm.

[0030] Preferably, the cutting spacing of the first double-wire cutting wire saw can be adjusted to the same as the length of the two long side straight line segments of the rectangle with the arc, and the double lines of the first double-wire cutting wire saw can respectively correspond to the endpoints at both ends of the long side straight line segments and be perpendicular to the two long side straight line segments; the second double-wire cutting wire saw can be adjusted to the same as the length of the two short side straight line segments of the rectangle with the arc, and the double lines of the second double-wire cutting wire saw can respectively correspond to the endpoints at both ends of the short side straight line segments and be perpendicular to the two short side straight line segments.

[0031] Preferably, the incoming material cutting device includes: an incoming material cutting support, which is provided on the machine base; an incoming material cutting table, which is provided on the machine base or the incoming material cutting support and is used to place the head and tail rods; an incoming material positioning mechanism, which cooperates with the incoming material cutting table and is used to position the head and tail rods; an incoming material clamping mechanism, which is vertically movably provided on the incoming material cutting support and is used to clamp the head and tail rods; an incoming material cutting frame, which is vertically movably provided on the incoming material cutting support and is provided with multiple cutting wheels; and an incoming material cutting wire, which is wound around the multiple cutting wheels to form the first double-wire cutting wire saw.

[0032] Preferably, the loading device includes: a conveying mechanism, provided on the machine base, for conveying the head and tail rods; a side stop, provided on the machine base or the conveying mechanism, on one side or both sides; a limit stop, provided on the machine base or the conveying mechanism, for limiting the position of the head and tail rods after they are conveyed into place.

[0033] Preferably, the flipping device includes: a flipping base, which is provided on the machine base; a placement seat, which is used to place the square material and is rotatably provided on the flipping base through a rotating shaft; and a flipping drive mechanism, which is provided on the flipping base or the machine base and is used to control the rotation of the placement seat.

[0034] Preferably, the square material cutting device includes: a square material cutting support, which is provided on the machine base; a square material cutting table, which is provided on the machine base or the square material cutting support and is used to place the square material; a square material positioning mechanism, which cooperates with the square material cutting table and is used to position the square material; a square material clamping mechanism, which is vertically movably provided on the square material cutting support and is used to clamp the square material; a square material cutting frame, which is vertically movably provided on the square material cutting support and is provided with multiple cutting wheels; and a square material cutting wire, which is wound around the multiple cutting wheels to form the cutting wire saw.

[0035] Preferably, the edge material cutting device includes: an edge material cutting support, which is provided on the machine base; an edge material cutting table, which is provided on the machine base or the edge material cutting support and is used to place the edge material; an edge material positioning mechanism, which cooperates with the edge material cutting table and is used to position the edge material; an edge material clamping mechanism, which is vertically movably provided on the edge material cutting support and is used to clamp the edge material; an edge material cutting frame, which is vertically and horizontally movably provided on the edge material cutting support and is provided with multiple cutting wheels; and an edge material cutting wire, which is wound around the multiple cutting wheels to form the second double-wire cutting wire saw.

[0036] Preferably, the unloading device includes a first discharging belt, a second discharging belt, a third discharging belt, a first scrap belt and a second scrap belt, all of which are arranged on the machine base along the first direction. The first discharging belt is used to move out the second half rod or the first half rod, the first discharging belt is used to move out the first half rod or the second half rod, the third discharging belt is used to move out the edge half rod, and the first scrap belt and the second scrap belt are used to move out waste; the first discharging belt and the second discharging belt are respectively located on both sides of the square material cutting device, the first scrap belt and the second scrap belt are respectively located on both sides of the edge material cutting device, and the third discharging belt is located between the second discharging belt and the first scrap belt.

[0037] Preferably, the transport device includes a first manipulator and a second manipulator disposed on the track and movable along the track, the first manipulator including a first clamping seat and at least one pair of clamps disposed on the first clamping seat capable of clamping a workpiece, a lifting mechanism for driving the first clamping seat to move vertically, and a translation mechanism for driving the first clamping seat to move along the first direction, and the second manipulator including a second clamping seat and at least one pair of clamps disposed on the second clamping seat capable of clamping a workpiece, a lifting mechanism for driving the second clamping seat to move vertically, and a translation mechanism for driving the second clamping seat to move along the first direction. The first manipulator is used to transport the head and tail rods to the first cutting station and / or transport the square material to the flipping station, and transport the flipped square material to the second cutting station; the second manipulator is used to transport the edge material to the second cutting station and / or transport the edge half rod to the blanking device, and transport the first half rod and the second half rod to the blanking device.

[0038] Preferably, the edge material cutting device further comprises a waste material moving mechanism for transferring the waste material to the first waste material belt and / or the second waste material belt.

[0039] In an alternative embodiment, the workstations of the square material cutting device and the edge material cutting device are interchanged, the square material cutting device is located at the third cutting station, and the edge material cutting device is located at the second cutting station, and the associated unloading device and / or the handling device are adjusted accordingly.

[0040] In a third aspect, the present invention provides a silicon rod cutting machine for cutting head rods and / or tail rods of silicon rods, comprising:

[0041] A machine base having a silicon rod processing platform; the silicon rod processing platform includes a transporting position and a cutting position arranged along a first direction, the transporting position has a track arranged along a second direction, and the cutting position has a loading station and a first cutting station, a second cutting station, and a third cutting station arranged in sequence along the second direction, wherein the first direction and the second direction are perpendicular;

[0042] an incoming material cutting device, provided at the first cutting station, comprising a first double-wire cutting wire saw, for cutting the head and tail rods placed vertically at the first cutting station to form a square main material and side materials on both sides; the head and tail rods are head rods or tail rods with a length of 210 mm to 216 mm cut from each end of a combined silicon rod, the combined silicon rod being formed by squaring the original silicon rod, and the cross-section of the combined silicon rod being a rectangle with an arc; the distance between the two long side straight segments of the rectangle with an arc is 210 mm to 215 mm, and the length of the two short side straight segments is 105 mm to 108 mm, or the distance between the two long side straight segments of the rectangle with an arc is 210 mm to 215 mm, and the distance between the two short side straight segments is 228 mm to 235 mm;

[0043] A loading device, provided at the loading station, capable of delivering the head and tail rods to a position adjacent to the incoming material cutting device;

[0044] a square material cutting device, provided at the second cutting station, comprising a cutting wire saw for cutting the square main material into a first half rod and a second half rod stacked one above the other;

[0045] a scrap cutting device, provided at the third cutting station, comprising a second double-wire cutting wire saw, for cutting the scrap into a scrap half rod or simultaneously cutting two scraps into two scrap half rods, and a scrap; wherein the scrap cross section is composed of two mutually perpendicular straight lines and an arc, the arc having the same length as the arc in the rectangle with the circular arc;

[0046] a material removal device for removing the first half rod, the second half rod, the edge half rod, and the waste;

[0047] A transport device is provided on the track, and is used to deliver the head and tail rods and / or the square main material, the side material to the positions corresponding to the first cutting station and / or the second cutting station, the third cutting station, and to deliver the first half rod and the second half rod, the side half rod to the position corresponding to the unloading device.

[0048] The arrangement positions of the square material cutting device and the edge material cutting device can be interchanged.

[0049] Compared with the above background technology, the beneficial effects of the present invention are as follows. A silicon rod cutting method is provided, which obtains a head rod and / or tail rod of a specific square size, whose cross section is a rectangle with an arc, and the distance between the two longer cutting lines of the four cutting lines is 210mm to 215mm, and the length of the two shorter cutting lines is 105mm to 108mm; the head rod and / or tail rod are cut into a square main material in the middle and side materials on both sides along the two ends of the two longer cutting lines; the square main material is cut into a first half rod and a second half rod with a cutting plane perpendicular to the axis of the combined silicon rod, and the side materials are cut into side half rods with two cutting planes that coincide with the two ends of the shorter cutting line and are perpendicular to the shorter cutting line, or two side half rods are cut into two side half rods at the same time; and the first half rod is selected for use as a qualified product, while the second half rod and the two side half rods are used as downgraded products. This method is roughly equivalent to adding a usable half-rod to each head or tail rod, and increasing the half-rod thickness by approximately 30%, significantly improving the overall utilization rate of the head and tail rods. A silicon rod cutting machine capable of applying the above-mentioned cutting method is also provided. Using this silicon rod cutting machine to process the head or tail rods can also significantly improve the overall utilization rate of the head and tail rods. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In the accompanying drawings, which are not necessarily drawn to scale, like numbers may describe similar components in different views. Like numbers with different letter suffixes may represent different instances of similar components. The accompanying drawings generally illustrate various embodiments discussed herein by way of example and not limitation.

[0051] Figure 1 is a schematic diagram showing a comparison of cross sections at various stages of cutting a silicon rod according to a silicon rod cutting method provided by a specific embodiment of the present invention. The figure shows the cross section of the head and tail rods to be cut, the cross section after the first cut, and the cross section of each part after the second cut when it is placed in its original position.

[0052] Figure 2 shows a comparison between the silicon rod cutting method provided by a specific embodiment of the present invention and the half rods cut from the silicon rod in the prior art. The figure shows the state in which multiple half rods cut from the head and tail rods of the present invention are combined into their original positions, and the state in which one half rod is cut from the head and tail rods in the prior art.

[0053] FIG3 and FIG4 are schematic diagrams showing the three-dimensional structure of a silicon rod cutting machine provided by a specific embodiment of the present invention at different viewing angles.

[0054] FIG5 is a schematic diagram of the three-dimensional structure of the incoming material cutting device in FIG3 and FIG4.

[0055] FIG6 is a schematic diagram of the three-dimensional structure of the turning device in FIG3 and FIG4.

[0056] FIG7 is a schematic diagram of the three-dimensional structure of the square material cutting device in FIG3 and FIG4.

[0057] FIG8 is a schematic diagram of the three-dimensional structure of the edge material cutting device in FIG3 and FIG4.

[0058] FIG9 is a schematic diagram of the three-dimensional structure of the first manipulator in FIG3 and FIG4.

[0059] FIG10 shows a schematic diagram of the three-dimensional structure of a silicon rod cutting machine provided in another specific embodiment of the present invention. DETAILED DESCRIPTION

[0060] In order to enable those skilled in the art to better understand the various technical solutions involved in the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments of this application and the various specific technical features described in the embodiments can be combined in any suitable manner; to avoid unnecessary repetition, the present invention will not further describe various possible combinations, as long as they do not violate the concept of the present invention, they should also be regarded as the content disclosed by the present invention.

[0061] The following detailed description should not be considered restrictive, and the scope of the embodiments of the present application is limited only by the claims of the published patents. The terms used here are only for the purpose of describing specific embodiments and are not intended to limit the present application. Spatially related terms, such as "upper", "lower", "left", "right", etc., may be used in the text to facilitate the description of the relationship between one element or feature and another element or feature shown in the figure. For example, "incoming material", "square material" and "edge material" in "incoming material cutting device", "square material cutting device" and "edge material cutting device" are mainly used to distinguish different multiple cutting devices according to the state of the workpiece to be processed, and should not be used as a limitation on the present application.

[0062] Although in some instances the terms first, second, third, etc. are used herein to describe various elements or parameters, these elements or parameters should not be limited by these terms. These terms are only used to distinguish one element or parameter from another element or parameter. For example, the first half rod can be referred to as the second half rod, and similarly, the second half rod can be referred to as the first half rod, and the first direction can be referred to as the second direction, and similarly, the second direction can be referred to as the first direction, without departing from the scope of the various described embodiments; the first cutting station, the second cutting station, and the third cutting station can also be considered in this manner. Furthermore, as used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context indicates otherwise.

[0063] In order to improve the comprehensive utilization rate of the head rod and / or tail rod of the silicon rod, the present application provides a silicon rod cutting method, which includes the following steps: obtaining the head rod and / or tail rod, a first cutting, a first sorting, a second cutting, and a second sorting.

[0064] Among them, the head rod and / or tail rod are head rods and tail rods with lengths of 210mm to 216mm cut from both ends of the combined silicon rod respectively. The combined silicon rod is obtained by squaring the original silicon rod with a diameter of 252mm, as shown in Figure 1. The cross-section of the combined silicon rod or the head rod or the tail rod can be as shown in the first figure on the left in Figure 1. The cross-section of the combined silicon rod is composed of four cutting lines (911, 912) and the remaining four arcs 913, forming a rectangle with arcs. The two ends of the four cutting lines (911, 912) are extended to intersect with the adjacent cutting lines (911, 912) to form a rectangle. The distance between the two longer cutting lines 911 of the four cutting lines (911, 912) is 210mm to 215mm, and the length of the two shorter cutting lines 912 is 105mm to 108mm.

[0065] For greater convenience, the head rod and tail rod are collectively referred to as the head and tail rods. The two end surfaces of the original combined silicon rod are defined as the bottom surfaces of the head and tail rods, and the cut surface of the head and tail rods cut from the combined silicon rod is the top surface of the head and tail rods.

[0066] It should be noted that the above-mentioned diameter of 252mm is a nominal size, which is one of the commonly used sizes of silicon rods produced in the industry. The specific sizes may be 253mm or 254mm, 253.6mm, 252.8mm, 251.3mm, 251mm, 250mm, 254.5mm, etc. These specific sizes all fall within the scope of the nominal size of 252mm. The description of 252mm in the specification of this application should not be regarded as a limitation on this application, and the description of 252mm in the claims should not be regarded as an improper limitation thereto. For example, a half-rod with a length and width of 210mm and 105mm, respectively, is also a nominal size. Its tolerances are ±0.5mm and ±0.25mm according to current industry standards or specifications. Furthermore, these tolerances may be adjusted as technology and time evolve. The cut half-rods still need to be polished to meet the nominal dimensions of 210mm x 105mm. This means that a certain amount of machining allowance must be reserved during cutting to allow for polishing. Different processing lines require slightly different allowances, ranging from 1mm, 2mm, 3mm, 4mm, 5mm, 0.5mm, and so on. The same applies below.

[0067] As shown in Figure 1, the first cut involves slicing the head and / or tail rods (head and tail rods) along two long cutting lines 911 to create a central square main material 92 and two side scraps 93. In a theoretically optimal solution, the two arcs 931 of the cross section of the side scrap 93 are identical to arc 913. The first sorting step separates the cut square main material 92 from the side scraps 93. It should be noted that the two ends along the two longer cutting lines 911 should not be limited to the case of complete overlap, but may also include the case where the tolerance is ±0.5mm or ±0.25mm, and the appropriate processing allowance (subsequent grinding is required) is within 2mm or 1.5mm, or 1mm, which should all be considered as overlap; if the actual length of the longer cutting line 911 is 139mm, if a 1.5mm (2mm or 1mm) allowance is reserved at both ends during cutting, that is, a square main material 92 is cut out with a thickness of 142mm (143mm or 141mm), it should also be considered that the two ends along the two longer cutting lines 911 are overlapped or the same within the tolerance and reasonable processing allowance. The same applies to the second cutting, and the same below.

[0068] As shown in Figure 1, the second cutting process involves cutting the square main material 92 into a first half-rod 95 and a second half-rod 94 using a cutting plane perpendicular to the axis of the assembled silicon ingot. The trim 93 is then cut into a side half-rod 96 and scrap 97 using two cutting planes coinciding with and perpendicular to a shorter cutting line 912. In a theoretically optimal solution, the arc 971 of the scrap 97's cross section is identical to arc 913, maximizing the overall utilization of the head and tail ingots. (Of course, in practice, a certain margin is often required, resulting in a slight reduction in utilization.) Furthermore, the two trims 93 are arranged face-to-face, allowing the two cutting planes to simultaneously cut both trims 93, thereby simultaneously producing two side half-rods 96 and the corresponding four scraps 97. The face-to-face arrangement can be either two larger or two smaller surfaces facing each other; the arrangement can be vertical or horizontal; and the two surfaces can be spaced a certain distance apart or close together or pressed against each other.

[0069] The second sorting step involves selecting the first half-rod 95. When located within the head or tail rod, the first half-rod 95 is located near the center of the assembled silicon rod. Alternatively, the first half-rod 95 is a half-rod with a top surface cut from the square main material 92. In a preferred embodiment, the top surfaces of the head and tail rods can be marked (using any suitable method, including any existing marking technology), to facilitate identification during the cutting process.

[0070] Using the above-described cutting method, in a specific embodiment, as shown in Figures 1 and 2, a head and tail ingot with a nominal diameter of 252mm and a nominal length of 210mm produces: one qualified half-ingot (thickness 139.3mm) + one downgraded half-ingot (thickness 139.3mm) + two downgraded side half-ingots (thickness 45mm). In contrast, in the prior art, 100mm of the 210mm head and tail ingots are waste and 110mm are qualified material. The resulting total production is: 1.04 qualified half-ingots (thickness 139.3mm) + 1.04 qualified side half-ingots (thickness approximately 45mm) + one downgraded half-ingot (thickness 100mm). This is equivalent to removing half of the two side half-ingots from the original qualified silicon ingot in exchange for the two side half-ingots from the scrap material on both sides of the original head and tail ingot (exchanging one qualified side half-ingot for two downgraded side half-ingots), while the thickness of the middle half-ingot increases by approximately 40mm. Clearly, using the method of the present invention, the overall utilization rate of the combined silicon rod head and tail within a 210mm length is increased by approximately 25%. If only the 100mm length of the head and tail is cut, the effective utilization rate of the head and tail rods is increased to approximately 80%, a significant improvement.

[0071] In some preferred embodiments, the lengths of the head and tail rods cut from both ends of the assembled silicon rod are 210 mm to 215 mm, preferably 211 mm to 213 mm or 214 mm. The distances between the two longer cutting lines of the four cutting lines are 210 mm to 212 mm, and the lengths of the two shorter cutting lines are 105 mm to 106.8 mm or 107 mm, preferably 211 mm and 106 mm, respectively.

[0072] In some preferred embodiments, in the first cutting process, a double-line cutting method is used to cut the head and / or tail rod into a central square main piece and two side pieces at a time. In the second cutting process, the two side pieces are clamped face to face and fixed, and the double-line cutting method is used to cut out the two side half rods at a time.

[0073] In some preferred embodiments, the method further comprises: after the second cutting, removing the waste material after the edge material is cut into half rods.

[0074] In some preferred embodiments, the second half-stick and the side half-stick are classified into the same category during the second sorting, because both will be used for degradation in subsequent use.

[0075] In an alternative embodiment, the distance between the two longer cutting lines of the four cutting lines is 210 mm to 215 mm, and the distance between the two shorter cutting lines is 228 mm to 235 mm. In the second cutting, the two cutting surfaces use a rated width to cut out the edge half-bar, and the rated width is 105 mm to 108 mm. Preferably, the rated width is 210 mm to 212 mm, 229 mm to 232 mm, and 105 mm to 107 mm, respectively. In these embodiments, it means that when squaring the silicon rod, the square is directly cut using four cutting surfaces with fixed relative distances and the side half rod is cut using the rated width, so that the steps of measuring the silicon rod and adjusting the cutting line position can be omitted when squaring, which is conducive to standardized production and improved production efficiency. For a silicon rod with a nominal diameter of 252 mm, when the diameter is smaller, the side half rod cut out has two sides with slightly insufficient width. The slices cut out of the insufficient part may be unqualified due to insufficient width, and this part is also unqualified when processed according to the above method. Therefore, when the silicon rod is smaller, using this method will not lead to a reduction in qualified raw materials, but only requires cutting more slices during subsequent slicing, and there is no loss of time. Therefore, the use of this alternative embodiment is conducive to standardized production and improved production efficiency. When the actual size of the silicon rod is larger, a small amount of usable slices may be wasted, but in exchange for improved efficiency.

[0076] To facilitate the application of the above-mentioned cutting method, the present application also provides a silicon rod cutting machine, as shown in Figures 3 and 4, for cutting the head and / or tail rods (head and tail rods) of silicon rods, comprising a machine base 10 and a loading device 20, an incoming material cutting device 30, a turning device 40, a square material cutting device 50, an edge material cutting device 60, a discharge device 70, and a transport device 80. The machine base 10 has a silicon rod processing platform; the silicon rod processing platform includes a transport area and a cutting area arranged along a first direction. The transport area has a track 11 arranged along a second direction. The cutting area has a loading station and a first cutting station, a turning station, a second cutting station, and a third cutting station arranged in sequence along the second direction, with the first and second directions being perpendicular.

[0077] 3 and 4 , the incoming material cutting device 30 is provided at the first cutting station, including a first double-wire cutting wire saw, which is used to cut the head and tail rods 91 placed vertically at the first cutting station to form a square main material 92 and side materials 93 on both sides; the head and tail rods are head rods or tail rods with a length of 210 mm to 216 mm cut from both ends of the combined silicon rod, and the combined silicon rod is formed by squaring the original silicon rod with a diameter of 252 mm, and the cross-section of the combined silicon rod is a rectangle with a circular arc.

[0078] 3 and 4 , a loading device 20 is provided at the loading station, and the loading device 20 is capable of delivering the head and tail rods 91 to a position adjacent to the incoming material cutting device 30. A flipping device 40 is provided at the flipping station, and is used to rotate the square main material 92 from a vertical position 90 degrees to a horizontal position. A square material cutting device 50 is provided at the second cutting station, and includes a cutting wire saw for cutting the square main material 92 into a first half rod 95 and a second half rod 94. A side material cutting device 60 is provided at the third cutting station, and includes a second double-wire cutting wire saw for cutting the side material 93 into side half rods 96, or simultaneously cutting two side materials 93 into two side half rods 96, as well as waste material 97.

[0079] 3 and 4 , the unloading device 70 is used to remove the first and second half rods 95, 94, side half rods 96, and waste material 97. The transport device 80 is disposed on the track 11 and is used to deliver the head and tail rods 91 and / or the square main material 92 and the side material 93 to the positions corresponding to the first cutting station and / or the flipping station, the second cutting station, and the third cutting station, and to deliver the first and second half rods 95, 94, and side half rods 96 to the position corresponding to the unloading device 70.

[0080] In a preferred embodiment, the distance between the two long side straight segments of the arc-shaped rectangle is 210 mm to 215 mm, and the length of the two short side straight segments is 105 mm to 108 mm, preferably 211 mm and 106 mm respectively.

[0081] In a preferred embodiment, referring to Figures 1 to 4, the cutting spacing of the first double-wire cutting wire saw can be adjusted to the same length as the two long side straight line segments 911 of the rectangle with arcs, and the double lines of the first double-wire cutting wire saw can respectively correspond to the endpoints at both ends of the long side straight line segments 911 and be perpendicular to the two long side straight line segments 911; the second double-wire cutting wire saw can be adjusted to the same length as the two short side straight line segments 912, and the double lines of the second double-wire cutting wire saw can respectively correspond to the endpoints at both ends of the short side straight line segments 912 and be perpendicular to the two short side straight line segments 912.

[0082] In an optional embodiment, as shown in Figures 1 to 5, the incoming material cutting device 30 preferably includes: an incoming material cutting support 31, which is provided on the machine base 10; an incoming material cutting table 32, which is provided on the machine base 10 or the incoming material cutting support 31 and is used to place the head and tail rods 91; an incoming material positioning mechanism 38, which cooperates with the incoming material cutting table 32 and is used to position the head and tail rods 91; an incoming material clamping mechanism 34, which is vertically movable and provided on the incoming material cutting support 31 and is used to clamp the head and tail rods 91; an incoming material cutting frame 35, which is vertically movable and provided on the incoming material cutting support 31 and is provided with multiple cutting wheels 36; and an incoming material cutting wire 37, which is wound around the multiple cutting wheels 36 to form the first double-wire cutting wire saw. As shown in Figure 5, the incoming material cutting frame 35 is provided on the incoming material cutting support 31 and is vertically movable via a lifting rail 33.

[0083] In an optional embodiment, as shown in Figures 1 to 4, the loading device 20 includes a conveying mechanism 21, side blocks 22, and a limit stop 23. The conveying mechanism 21 is provided on the machine base 10 for conveying the head and tail rods 91, the side blocks 22 are provided on the conveying mechanism 21, and the limit stop 23 is provided on the conveying mechanism 21 for limiting the position of the head and tail rods 91 after they are conveyed into position. In addition, the side blocks 22 can also be directly provided on the machine base 10, and the limit stop 23 can also be directly provided on the machine base 10. The side blocks 22 can be provided on one side or on both sides.

[0084] In an alternative embodiment, as shown in Figures 3, 4, and 6, the turning device 40 includes: a turning base 41, disposed on the machine base 10; a placement seat 43, for placing the square material 92, which is rotatably disposed on the turning base 41 via a rotating shaft 42; and a turning drive mechanism 44, disposed on the turning base 41, for controlling the rotation of the placement seat 43. Alternatively, the turning drive mechanism 44 may be disposed on the machine base 10.

[0085] In an optional embodiment, as shown in Figures 3, 4, and 7, the material cutting device 50 includes: a material cutting support 51, which is mounted on the machine base 10; a material cutting table 52, which is mounted on the machine base 10 or the material cutting support 51 and is used to place the material 92; a material positioning mechanism 58, which cooperates with the material cutting table 52 and is used to position the material; a material clamping mechanism 54, which is vertically movable and mounted on the material cutting support 51 and is used to clamp the material 92; a material cutting frame 55, which is vertically movable and mounted on the material cutting support 51 and is provided with a plurality of cutting wheels 56; and a material cutting wire 57, which is wound around the plurality of cutting wheels 56 to form the cutting wire saw. As shown in Figure 7, the material cutting frame 55 is mounted on the material cutting support 51 and is vertically movable via a lifting rail 53.

[0086] In an optional embodiment, as shown in Figures 3, 4 and 8, the edge material cutting device 60 includes: an edge material cutting support 61, which is provided on the machine base 10; an edge material cutting table 62, which is provided on the machine base 10 or the edge material cutting support 61, and is used to place the edge material 93; an edge material positioning mechanism 68, which cooperates with the edge material cutting table 62 and is used to position the edge material 93; an edge material clamping mechanism 64, which is vertically movable and provided on the edge material cutting support 61, and is used to clamp the edge material 93; an edge material cutting frame 65, which is vertically and horizontally movable and provided on the edge material cutting support 61, and is provided with a plurality of cutting wheels 66; and an edge material cutting wire 67, which is wound around the plurality of cutting wheels 66 to form the second double-wire cutting wire saw. As shown in Figure 8, the edge material cutting frame 65 is laterally movable and provided on the cutting frame transverse linear rail 69, and the cutting frame transverse linear rail 69 is vertically movable and provided on the edge material cutting support 61 via the lifting linear rail 63.

[0087] In an optional embodiment, as shown in Figures 3 and 4, the unloading device 70 includes a first discharging belt 71, a second discharging belt 72, a third discharging belt 73, a first scrap belt 74 and a second scrap belt 75, all of which are arranged on the machine base 10 along the first direction. The first discharging belt is used to remove the second half rod 94 or the first half rod, the first discharging belt is used to remove the first half rod 95 or the second half rod 94, the third discharging belt 73 is used to remove the edge half rod 96, and the first scrap belt 74 and the second scrap belt 75 are used to remove waste; the first discharging belt 71 and the second discharging belt 72 are respectively located on both sides of the square material cutting device 50, the first scrap belt 74 and the second scrap belt 75 are respectively located on both sides of the edge material cutting device 60, and the third discharging belt 73 is located between the second discharging belt 72 and the first scrap belt 74.

[0088] In an optional embodiment, as shown in Figures 3, 4, and 9, the handling device 80 includes a first manipulator 81 and a second manipulator 82, which are disposed on a track 11 and can move along the track 11. The first manipulator 81 includes a first clamping seat 811 and at least a pair of clamps 812 disposed on the first clamping seat 811 that can clamp a workpiece, a lifting mechanism 813 that drives the first clamping seat 811 to move vertically, and a translation mechanism 814 that drives the first clamping seat 811 to move along the first direction. As shown in Figure 9, the clamping seat 811 is vertically movable on a sliding support 815 via the lifting mechanism 813, and the sliding support 815 is movable along the first direction on the base of the first manipulator 81 (the base unit labeling is shown in Figure 9).

[0089] Furthermore, the second manipulator 82 includes a second clamping seat, at least one pair of clamps mounted on the second clamping seat capable of clamping a workpiece, a lifting mechanism for driving the second clamping seat to move vertically, and a translation mechanism for driving the second clamping seat to move along the first direction. The specific structure of the second manipulator 82 can be the same or similar to that of the first manipulator 81. For details, please refer to the first manipulator 81 shown in FIG9 , and no separate drawings are provided.

[0090] Among them, the first manipulator 81 is used to transport the head and tail rods 91 to the first cutting station and / or transport the square material 92 to the flipping station, and transport the flipped square material 92 to the second cutting station; the second manipulator 82 is used to transport the edge material 93 to the second cutting station and / or transport the edge half rod 96 to the unloading device 70, and transport the first half rod 95 and the second half rod 94 to the unloading device 70. In addition, those skilled in the art can also make other reasonable combinations of the above-mentioned transporting actions of the first manipulator 81 and the second manipulator 82 according to their due technical level, and the above description of the first manipulator 81 and the second manipulator 82 should not be regarded as limiting thereof.

[0091] In an optional embodiment, the edge material cutting device 60 may further be provided with a waste material transfer mechanism for transferring the waste material 97 to the first waste material belt and / or the second waste material belt. This can reduce the workload of the transfer device 80 and improve work efficiency. The specific structure of the mechanism can refer to various existing technologies, such as using a clamping device or various suitable manipulators.

[0092] It should be noted that, in the above-mentioned embodiments, except for those already described, the remaining specific structures or locations not described are assumed to be implementable by adopting the common knowledge or existing technologies in the art.

[0093] In an alternative embodiment, the stations of the square material cutting device 50 and the edge material cutting device 60 are interchanged, the square material cutting device 50 is located at the third cutting station, and the edge material cutting device 60 is located at the second cutting station, and the associated unloading device 70 and / or the handling device 80 are adjusted accordingly. Among them, the various components of the unloading device 70 are defined based on the square material cutting device 50 and the edge material cutting device 60. Only the specific handling workflow of the first manipulator 81 and the second manipulator 82 of the handling device 80 needs to be adaptively adjusted (the position and destination of the workpiece to be processed are slightly different). Those skilled in the art can easily obtain this based on the above description and the level of knowledge they should have, and will not be repeated in this application.

[0094] In another alternative embodiment, the present invention provides a silicon ingot cutting machine that, unlike the aforementioned silicon ingot cutting machine, does not include a turning device. The cutting wire saw of the square material cutting device 50 is adjusted accordingly, allowing it to be used to cut a square main material 92 into a first half ingot 95 and a second half ingot 94 stacked one above the other. A specific embodiment of the present invention is as follows.

[0095] A silicon rod cutting machine for cutting head rods and / or tail rods (head and tail rods) of silicon rods, comprising:

[0096] The machine base 10 has a silicon ingot processing platform; the silicon ingot processing platform includes a transport area and a cutting area arranged along a first direction. The transport area has a track 11 arranged along a second direction. The cutting area has a loading station and a first cutting station, a second cutting station, and a third cutting station arranged in sequence along the second direction. The first direction and the second direction are perpendicular.

[0097] The incoming material cutting device 30 is provided at the first cutting station and includes a first double-wire saw for cutting the head and tail rods 91 placed vertically at the first cutting station to form a square main material 92 and side materials 93 on both sides. The head and tail rods 91 are head rods or tail rods with a length of 210 mm to 216 mm cut from each end of a composite silicon rod. The composite silicon rod is formed by squaring the original silicon rod. The cross-section of the composite silicon rod is a rectangular rod with an arc. The distance between the two long side straight segments 911 of the rectangular rod with an arc is 210 mm to 215 mm, and the length of the two short side straight segments 912 is 105 mm to 108 mm.

[0098] The feeding device 20 is provided at the feeding station and is capable of delivering the head and tail rods 91 to a position adjacent to the incoming material cutting device 30;

[0099] The square material cutting device 50 is provided at the second cutting station and includes a cutting wire saw for cutting the square main material 92 into a first half rod 95 and a second half rod 94 stacked one above the other;

[0100] The edge material cutting device 60 is provided at the third cutting station and includes a second double-wire cutting wire saw for cutting the edge material 93 into edge half-rods 96 or simultaneously cutting two edge materials 93 into two edge half-rods 96 and waste material 97; the cross section of the waste material 97 is composed of two mutually perpendicular straight lines and an arc 971, and the arc 971 is the same length as the arc 913 in the rectangle with the arc;

[0101] A material removal device 70 for removing the first half rod 95 and the second half rod 94, the side half rod 96, and the waste 97;

[0102] The transport device 80 is arranged on the track 11, and is used to deliver the head and tail rods 91 and / or the square main material 92, the side material 93 to the positions corresponding to the first cutting station and / or the second cutting station, the third cutting station, and to deliver the first half rod 95 and the second half rod 94, the side half rod 96 to the position corresponding to the unloading device 70.

[0103] The arrangement positions of the square material cutting device 50 and the edge material cutting device 60 can be interchanged.

[0104] It should be noted that, as shown in Figures 3 to 9, the directions of the two long side straight segments 911 in the arc-shaped rectangle in the cross section of the head and tail rods 91 are the same as the first direction, and the loading device 20, incoming material cutting device 30, turning device 40, square material cutting device 50, edge material cutting device 60, unloading device 70, and conveying device 80 of the above-mentioned silicon rod cutting machine are all based on or at least adapted to this direction for setting or configuration, but those skilled in the art should understand that the placement of the head and tail rods 91 can be various, such as making the directions of the two long side straight segments 911 in the cross section of the head and tail rods 91 the same as the second direction, and the purpose can also be achieved by making adaptive adjustments to one or more of the incoming material cutting device 30 and / or the turning device 40, the square material cutting device 50, the edge material cutting device 60, the unloading device 70, and the conveying device 80. For example, the cutting line direction of the first double-wire cutting wire saw of the future material cutting device 30 is adjusted to be perpendicular to the second direction, the cutting line direction of the wire cutting saw of the square material cutting device 50 is adjusted to be perpendicular to the second direction, the rotation axis of the flipping device 40 is adjusted to be parallel to the second direction and perpendicular to the second direction, the cutting line direction of the second double-wire cutting wire saw of the edge material cutting device 60 is adjusted to be perpendicular to the second direction, and the clamp of the conveying device 80 is also adjusted adaptively (the unloading device 70 does not need to be adjusted), and the details can be referred to as shown in Figure 10.

[0105] In addition, in some optional embodiments, the conveying direction of the loading device 20 may be along the second direction in addition to the first direction as shown in Figures 3 and 4, or may be at a certain angle to the first direction or the second direction.

[0106] The foregoing detailed description is intended to be illustrative rather than limiting. The scope of the invention should, therefore, be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled.

Claims

1. A method for cutting a silicon rod, which is used for the head rod and / or the tail rod of the silicon rod, and is characterized in that, The method includes: Obtaining a head rod and / or a tail rod, and respectively cutting a head rod and a tail rod with a length of 210 mm to 216 mm from both ends of the sawn combined silicon rod. The combined silicon rod is obtained by squaring a raw silicon rod with a diameter of 252 mm. The cross-section of the combined silicon rod consists of four cutting lines and the remaining four arcs. Both ends of the four cutting lines extend to intersect with adjacent cutting lines to form a rectangle. The distance between the two longer cutting lines among the four cutting lines is 210 mm to 215 mm, and the length of the two shorter cutting lines is 105 mm to 108 mm, or the distance between the two longer cutting lines among the four cutting lines is 210 mm to 215 mm, and the distance between the two shorter cutting lines is 228 mm to 235 mm; The first cutting is to cut out the square main material in the middle and the side materials on both sides of the head rod and / or the tail rod along both ends of the two longer cutting lines; The first sorting is to separate the cut square main material from the side materials on both sides; The second cutting includes cutting the square main material into a first half rod and a second half rod with a cutting plane perpendicular to the axis of the combined silicon rod, cutting out side half rods from the side materials with two cutting planes coinciding with both ends of the shorter cutting line and perpendicular to the shorter cutting line, or cutting out two side half rods from the two side materials at the same time; or the two cutting planes cut out the side half rods with a rated width, and the rated width is 105 mm to 108 mm; The second sorting is to select the first half rod, and when the first half rod is in the head rod or the tail rod, its position is on the side close to the middle of the combined silicon rod.

2. The silicon rod cutting method according to claim 1, wherein The lengths of the head rod and the tail rod respectively cut from both ends of the combined silicon rod are 211 mm to 214 mm. The distance between the two longer cutting lines among the four cutting lines is 210 mm to 212 mm, and the length of the two shorter cutting lines is 105 mm to 106.8 mm; or the distance between the two longer cutting lines among the four cutting lines is 210 mm to 212 mm, and the distance between the two shorter cutting lines is 229 mm to 232 mm. In the second cutting, the two cutting planes cut out the side half rods with a rated width, and the rated width is 105 mm to 107 mm.

3. The silicon rod cutting method according to claim 1, wherein In the first cutting, the head rod and / or the tail rod are cut out the square main material in the middle and the side materials on both sides at one time by means of double-wire cutting; In the second cutting, the two side materials are clamped and fixed face to face, and the two side half rods are cut out at one time by means of double-wire cutting; In the second sorting, the second half rod and the side half rods are classified into the same category; In obtaining the head rod and the tail rod, it also includes making marks on the cutting surfaces of the head rod and the tail rod so that the first half rod can be significantly distinguished from the second half rod; The method also includes: after the second cutting, removing the waste materials after cutting out the side half rods from the side materials.

4. A silicon rod cutting machine, used for the head rod and / or the tail rod of a silicon rod, characterized in that, Includes: The machine base has a silicon rod processing platform; the silicon rod processing platform includes a handling area and a cutting area arranged along a first direction, the handling area has a track arranged along a second direction, and the cutting area has a loading station, a first cutting station, a flipping station, a second cutting station, and a third cutting station arranged in sequence along the second direction, and the first direction is perpendicular to the second direction; The incoming material cutting device is arranged at the first cutting station and includes a first double-wire cutting saw for cutting the head and tail rods placed vertically at the first cutting station to form square main materials and side materials on both sides; the head and tail rods are head rods or tail rods with a length of 210 mm to 216 mm respectively intercepted from both ends of the combined silicon rod, the combined silicon rod is formed by squaring the original silicon rod with a diameter of 252 mm, and the cross-section of the combined silicon rod is a rectangle with an arc; The loading device is arranged at the loading station and can deliver the head and tail rods to a position adjacent to the incoming material cutting device; The flipping device is arranged at the flipping station and is used to rotate the square main material 90 degrees from the vertical position to the horizontal position; The square material cutting device is arranged at the second cutting station and includes a cutting wire saw for cutting the square main material into a first half rod and a second half rod; The side material cutting device is arranged at the third cutting station and includes a second double-wire cutting saw for cutting out side half rods from the side materials or simultaneously cutting out two side half rods and waste materials from two side materials; The unloading device is used to remove the first half rod, the second half rod, the side half rod, and the waste materials; The handling device is arranged on the track and is used to deliver the head and tail rods and / or the square main material and the side materials to positions corresponding to the first cutting station and / or the flipping station, the second cutting station, and the third cutting station, and to deliver the first half rod, the second half rod, and the side half rod to positions corresponding to the unloading device.

5. The silicon rod cutting machine according to claim 4, characterized in that, The length of the head rod or tail rod is 210 mm to 214 mm, the distance between the two long side straight line segments of the rectangle with an arc is 210 mm to 215 mm, and the length of the two short side straight line segments is 105 mm to 108 mm; or the distance between the two long side straight line segments of the rectangle with an arc is 210 mm to 215 mm, the distance between the two short side straight line segments is 228 mm to 235 mm, and the side half rods are cut out with a rated width, and the rated width is 105 mm to 108 mm.

6. The silicon rod cutting machine according to claim 4, wherein, The cutting spacing of the first double-wire cutting saw can be adjusted to be the same as the length of the two long side straight line segments of the rectangle with an arc, and the two wires of the first double-wire cutting saw can respectively correspond to the endpoints at both ends of the long side straight line segments and be perpendicular to the two long side straight line segments; the second double-wire cutting saw can be adjusted to be the same as the length of the two short side straight line segments of the rectangle with an arc, and the two wires of the second double-wire cutting saw can respectively correspond to the endpoints at both ends of the short side straight line segments and be perpendicular to the two short side straight line segments.

7. The silicon rod cutting machine according to claim 4, wherein, The incoming material cutting device includes: The incoming material cutting support is arranged on the machine base; The incoming material cutting table is arranged on the machine base or the incoming material cutting support and is used for placing the head and tail rods; The incoming material positioning mechanism is matched with the incoming material cutting table and is used for positioning the head and tail rods; The incoming material clamping mechanism is movably arranged on the incoming material cutting support in the vertical direction and is used for clamping the head and tail rods; The incoming material cutting frame is movably arranged on the incoming material cutting support in the vertical direction, and a plurality of cutting wheels are arranged thereon; And an incoming material cutting wire is wound around the plurality of cutting wheels to form the first double-wire cutting wire saw.

8. The silicon rod cutting machine according to claim 4, wherein The feeding device includes: a conveying mechanism arranged on the machine base and used for conveying the head and tail rods; side stops arranged on the machine base or the conveying mechanism, on one side or both sides; a limiting stop arranged on the machine base or the conveying mechanism and used for limiting the head and tail rods after they are conveyed in place; The turning device includes: a turning base arranged on the machine base; a placing seat for placing the square material, which is rotatably arranged on the turning base through a rotating shaft; a turning driving mechanism arranged on the turning base or the base and used for controlling the rotation of the placing seat; The square material cutting device includes: a square material cutting support arranged on the machine base; a square material cutting table arranged on the machine base or the square material cutting support and used for placing the square material; a square material positioning mechanism matched with the square material cutting table and used for positioning the square material; a square material clamping mechanism movably arranged on the square material cutting support in the vertical direction and used for clamping the square material; a square material cutting frame movably arranged on the square material cutting support in the vertical direction, and a plurality of cutting wheels are arranged thereon; and a square material cutting wire wound around the plurality of cutting wheels to form the cutting wire saw; The side material cutting device includes: a side material cutting support arranged on the machine base; a side material cutting table arranged on the machine base or the side material cutting support and used for placing the side material; a side material positioning mechanism matched with the side material cutting table and used for positioning the side material; a side material clamping mechanism movably arranged on the side material cutting support in the vertical direction and used for clamping the side material; a side material cutting frame movably arranged on the side material cutting support in the vertical and horizontal directions, and a plurality of cutting wheels are arranged thereon; and a side material cutting wire wound around the plurality of cutting wheels to form the second double-wire cutting wire saw; The discharging device includes a first discharging belt, a second discharging belt, a third discharging belt, a first waste belt and a second waste belt which are all arranged on the machine base along the first direction. The first discharging belt is used for discharging the second half rod or the first half rod, the first discharging belt is used for discharging the first half rod or the second half rod, the third discharging belt is used for discharging the side half rod, and the first waste belt and the second waste belt are used for discharging waste; the first discharging belt and the second discharging belt are respectively located on both sides of the square material cutting device, the first waste belt and the second waste belt are respectively located on both sides of the side material cutting device, and the third discharging belt is located between the second discharging belt and the first waste belt; The handling device includes a first manipulator and a second manipulator disposed on the track and movable along the track. The first manipulator includes a first clamping seat, at least one pair of clamps capable of clamping workpieces disposed on the first clamping seat, a lifting mechanism for driving the first clamping seat to move vertically, and a translation mechanism for driving the first clamping seat to move in the first direction. The second manipulator includes a second clamping seat, at least one pair of clamps capable of clamping workpieces disposed on the second clamping seat, a lifting mechanism for driving the second clamping seat to move vertically, and a translation mechanism for driving the second clamping seat to move in the first direction; The head and tail rods are head rods or tail rods respectively cut from both ends of the combined silicon rod with a length of 211 mm to 213 mm. The distance between the two long side straight line segments of the rectangle with arcs is 210 mm to 212 mm, and the length of the two short side straight line segments is 105 mm to 107 mm; or the distance between the two long side straight line segments of the rectangle with arcs is 210 mm to 212 mm, and the distance between the two short side straight line segments is 229 mm to 232 mm.

9. The silicon rod cutting machine according to claim 8, wherein, The first manipulator is used to transport the head and tail rods to the first cutting station and / or transport the square material to the flipping station, and transport the flipped square material to the second cutting station; the second manipulator is used to transport the edge material to the second cutting station and / or transport the edge semi-rods to the blanking device, and transport the first semi-rod and the second semi-rod to the blanking device; The edge material cutting device is further provided with a waste material transfer mechanism for transferring the waste material to the first waste material belt and / or the second waste material belt.

10. A silicon rod cutting machine for the head rod and / or tail rod of a silicon rod, characterized in that, Including: A machine base having a silicon rod processing platform; the silicon rod processing platform includes a handling area and a cutting area arranged along the first direction. The handling area has a track arranged along the second direction, and the cutting area has a loading station, a first cutting station, a second cutting station, and a third cutting station arranged in sequence along the second direction. The first direction and the second direction are perpendicular; A feeding and cutting device disposed at the first cutting station, including a first double-wire cutting saw for cutting the head and tail rods vertically placed at the first cutting station to form a square main material and edge materials on both sides; the head and tail rods are head rods or tail rods respectively cut from both ends of the combined silicon rod with a length of 210 mm to 216 mm. The combined silicon rod is formed by squaring the original silicon rod, and the cross-section of the combined silicon rod is a rectangle with arcs; the distance between the two long side straight line segments of the rectangle with arcs is 210 mm to 215 mm, and the length of the two short side straight line segments is 105 mm to 108 mm, or the distance between the two long side straight line segments of the rectangle with arcs is 210 mm to 215 mm, and the distance between the two short side straight line segments is 228 mm to 235 mm; A loading device disposed at the loading station, which can deliver the head and tail rods to a position adjacent to the feeding and cutting device; A square material cutting device disposed at the second cutting station, including a cutting wire saw for cutting the square main material into a first semi-rod and a second semi-rod stacked on top of each other; The edge material cutting device is arranged at the third cutting station and includes a second double-wire cutting saw, which is used to cut edge semi-rods from the edge material or simultaneously cut two edge semi-rods and waste materials from two edge materials; the cross-section of the waste material is composed of two perpendicular straight lines and an arc, and the length of the arc is the same as that of the arc in the rectangle with an arc. The blanking device is used to remove the first semi-rod, the second semi-rod, the edge semi-rod, and the waste material. The handling device is arranged on the track and is used to deliver the head and tail rod and / or the square main material and the edge material to the positions corresponding to the first cutting station and / or the second cutting station and the third cutting station, and to deliver the first semi-rod, the second semi-rod, and the edge semi-rod to the position corresponding to the blanking device.

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