Shaft base and grooving equipment thereof

Abstract

The invention discloses a shaft base and slotting equipment thereof, the shaft base comprises a base main body, the base main body is provided with an insertion hole, a cooling flow channel is constructed in the base main body, the cooling flow channel comprises a second flow channel section and two groups of first flow channel sections surrounding the insertion hole, one end of each first flow channel section extends out of the base main body to form an external interface of the cooling flow channel, and the other end of each first flow channel section extends out of the base main body. The two ends of the second flow channel section are connected with the other ends of the two first flow channel sections correspondingly, so that the two sets of first flow channel sections surrounding the inserting hole form a channel, during cooling, external water and other cooling media enter the first flow channel section through an outer connector of one first flow channel section and then enter the other first flow channel section through the second flow channel section, and therefore the cooling efficiency is improved. And the water flows out through the external interface of the first flow channel section, so that the base main body and the main shaft are cooled. According to the shaft base, the situation that the main shaft and the shaft base are heated to deform due to too large temperature change of laser grooving equipment can be avoided, and the grooving precision of the grooving equipment is improved.

Description

Technical Field

[0001] The invention relates to the technical field of silicon slice cutting and manufacturing, and in particular to a shaft base and a slotting device thereof. Background Art

[0002] Silicon wafer cutting technology is of great significance in photovoltaic cell materials, and cutting technology has long been a hot topic in photovoltaic industry research. Silicon wafer cutting technology is mainly divided into inner circle cutting and multi-wire cutting technology. At present, silicon wafer cutting technology mostly adopts multi-wire cutting technology. Compared with the previous inner circle cutting, it has the advantages of high cutting efficiency, low cost and less material loss. Therefore, multi-wire steel wire silicon wafer cutting technology is the mainstream of future cutting technology.

[0003] Cutting silicon wafers is an important step in the processing of solar cells, which directly affects the crystal orientation, thickness, surface roughness, and warpage of the silicon wafer surface. The silicon wafer manufacturing process may encounter process difficulties such as broken wires, shutdowns, uneven thickness, and excessive roughness. The improvement of multi-wire cutting technology reduces the thickness of silicon wafers and reduces material loss during the cutting process, thereby reducing the consumption of silicon materials, further reducing the cost per watt of solar energy, and promoting the grid-parity of photovoltaic power generation. Therefore, it is of great significance to study and improve silicon wafer technology.

[0004] The principle of laser grooving is that a laser beam with a high energy density is irradiated on the surface of the material being processed. The surface of the material absorbs the laser energy, the temperature rises, and melting, ablation, and evaporation occur, thereby achieving the purpose of removing the surface layer.

[0005] The polyurethane main roller is one of the main parts of the multi-wire cutting technology. The main dimension of the polyurethane main roller slotting is the spacing between the two slots. The required accuracy of the slot spacing is ±2μm. This spacing can directly reflect the thickness of the cut silicon wafer. The more consistent the slot spacing is, the more consistent the thickness of the silicon wafer is, which can directly reflect the product quality of the photovoltaic module. The laser slotting equipment will generate heat when working. Excessive temperature changes will cause the main shaft and shaft base of the laser slotting equipment to deform, which will affect the slotting accuracy of the slotting equipment. Summary of the invention

[0006] The purpose of the present invention is to provide a shaft base and a slotting device thereof, aiming to solve the technical problem in the related art that the laser slotting equipment may cause the main shaft and the shaft base to be thermally deformed due to excessive temperature changes, thereby affecting the slotting accuracy of the slotting equipment.

[0007] In order to solve the above problems, according to one aspect of the present application, an embodiment of the present invention provides a shaft base, which is applied to a slotting device, wherein the slotting device includes a main shaft and a shaft base, wherein the shaft base includes a base body, wherein the base body has an insertion hole, and the main shaft is arranged in the insertion hole, and a cooling channel is constructed in the base body, wherein the cooling channel is used to cool the shaft base, and the cooling channel includes a second channel section and two groups of first channel sections surrounding the insertion hole, wherein one end of the first channel section extends to the outside of the base body to form an external interface of the cooling channel, and the two ends of the second channel section are respectively connected to the other ends of the two first channel sections.

[0008] In some embodiments, the first flow channel section includes three sequentially connected first pipe sections, a second pipe section, and a third pipe section, wherein one end of the first pipe section away from the second pipe section extends outside the base body to form the external interface, and one end of the third pipe section away from the second pipe section is connected to the second flow channel section.

[0009] In some embodiments, the first flow channel segment further includes a fourth pipeline segment connected between the second pipeline segment and the third pipeline segment, and the first pipeline segment and the second pipeline segment, the second pipeline segment and the fourth pipeline segment, and the fourth pipeline segment and the third pipeline segment are all vertically arranged.

[0010] In some embodiments, the insertion hole passes through the first side surface and the second side surface of the base body, the first side surface is away from the second side surface, and one end of the first pipe segment away from the second pipe segment extends to the third side surface of the base body, and the third side surface is connected to both the first side surface and the second side surface.

[0011] In some embodiments, the axis of the first pipe segment is disposed perpendicularly to the third side surface.

[0012] In some embodiments, the first pipe segment, the second pipe segment, the third pipe segment and the fourth pipe segment are all arranged perpendicular to the insertion hole.

[0013] In some embodiments, the second flow channel section is arranged in parallel with the insertion hole.

[0014] In some embodiments, at least one end of the second pipe segment, the third pipe segment, and the fourth pipe segment extends outside the base body to form an opening in the base body, and a plugging piece is provided at the opening.

[0015] In some embodiments, the base body is provided with at least three adjustment holes extending from the outside to the insertion hole, and at least three of the adjustment holes are evenly distributed along the circumference of the insertion hole. An adjustment screw is screwed into each of the adjustment holes, and a bearing is sleeved on the main shaft, and each of the adjustment screws is against the bearing.

[0016] According to another aspect of the present application, an embodiment of the present invention further provides a slotting device, which includes a spindle base as described above.

[0017] Compared with the prior art, the shaft base of the present invention has at least the following beneficial effects:

[0018] An embodiment of the present invention discloses a shaft base, which is applied to a slotting device. The slotting device includes a main shaft and a shaft base. The shaft base includes a base body, the base body has an insertion hole, the main shaft is arranged in the insertion hole, and a cooling channel is constructed in the base body. The cooling channel is used to cool the shaft base. The cooling channel includes a second channel section and two groups of first channel sections surrounding the insertion hole. One end of the first channel section extends to the outside of the base body to form an external interface of the cooling channel. The two ends of the second channel section are respectively connected to the other ends of the two first channel sections, so that the two groups of first channel sections surrounding the insertion holes form a passage. During cooling, external water or other cooling medium enters the first channel section through the external interface of one first channel section, then enters the other first channel section through the second channel section, and then flows out through the external interface of the first channel section, so as to cool the base body and the main shaft. Since the first channel section surrounds the insertion hole, the cooling effect is better. The shaft base of the present invention can prevent the main shaft and the shaft base from being thermally deformed due to excessive temperature changes in laser slotting equipment, thereby improving the slotting accuracy of the slotting equipment.

[0019] On the other hand, the slotting equipment provided by the present invention is manufactured based on the above-mentioned shaft base, and its beneficial effects refer to the beneficial effects of the above-mentioned shaft base, which will not be described in detail here.

[0020] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0022] Figure 1A schematic diagram of the structure of the shaft base provided by an embodiment of the present invention;

[0023] Figure 2 A schematic diagram of the assembly structure of the shaft base and the main shaft provided in an embodiment of the present invention;

[0024] Figure 3 A schematic structural diagram of the shaft base provided in an embodiment of the present invention from another perspective.

[0025] Description of reference numerals:

[0026] 1. Spindle;

[0027] 2. Base body; 21. Insertion hole; 22. First flow channel section; 221. First pipeline section; 2211. External interface; 222. Second pipeline section; 223. Third pipeline section; 224. Fourth pipeline section; 23. Second flow channel section; 24. First side surface; 25. Second side surface; 26. Third side surface; 27. Adjustment hole; 28. Adjustment screw;

[0028] 3. Bearings. DETAILED DESCRIPTION

[0029] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention application are described in detail below in conjunction with the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "embodiment" does not necessarily refer to the same embodiment. In addition, specific features, structures, or characteristics in one or more embodiments may be combined in any suitable form.

[0030] In the description of the present invention, it should be clarified that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, but are not necessarily used to describe a specific order or sequence; the terms "vertical", "lateral", "longitudinal", "front", "rear", "left", "right", "up", "down", "horizontal", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention, and do not mean that the referred device or element must have a specific direction or position, and therefore cannot be understood as a limitation on the present invention.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Example 1

[0033] like Figure 1-3 As shown, an embodiment of the present invention provides a shaft base, which is applied to a slotting device, wherein the slotting device includes a main shaft 1 and a shaft base, wherein the shaft base includes a base body 2, wherein the base body 2 has an insertion hole 21, wherein the main shaft 1 is arranged in the insertion hole 21, and wherein a cooling channel is constructed in the base body 2, wherein the cooling channel is used to cool the shaft base, wherein the cooling channel includes a second channel section 23 and two groups of first channel sections 22 surrounding the insertion hole 21, wherein one end of the first channel section 22 extends to the outside of the base body 2 to form an external interface 2211 of the cooling channel, and wherein both ends of the second channel section 23 are respectively connected to the other ends of the two first channel sections 22.

[0034] In this embodiment, the shaft base is applied to a slotting device, which includes a spindle 1 and a shaft base, the shaft base includes a base body 2, the base body 2 has an insertion hole 21, the spindle 1 is arranged in the insertion hole 21, a cooling channel is constructed in the base body 2, the cooling channel is used to cool the shaft base, the cooling channel includes a second channel section 23 and two groups of first channel sections 22 surrounding the insertion hole 21, one end of the first channel section 22 extends to the outside of the base body 2 to form an external interface 2211 of the cooling channel, and both ends of the second channel section 23 They are respectively connected to the other ends of the two first flow channel sections 22, so that the two groups of first flow channel sections 22 surrounding the insertion holes 21 form a passage. During cooling, external water or other cooling medium enters the first flow channel section 22 through the external interface 2211 of one first flow channel section 22, then enters the other first flow channel section 22 through the second flow channel section 23, and then flows out through the external interface 2211 of the first flow channel section 22, so as to cool the base body 2 and the main shaft 1. Since the first flow channel section 22 surrounds the insertion hole 21, the cooling effect is better.

[0035] The shaft base of this embodiment can prevent the laser slotting equipment from causing the main shaft and the shaft base to be thermally deformed due to excessive temperature changes, thereby improving the slotting accuracy of the slotting equipment.

[0036] In some embodiments, the first flow channel section 22 includes three sequentially connected first pipe sections 221, second pipe sections 222, and third pipe sections 223, wherein one end of the first pipe section 221 away from the second pipe section 222 extends to the outside of the base body 2 to form the external interface 2211, and one end of the third pipe section 223 away from the second pipe section 222 is connected to the second flow channel section 23.

[0037] In this embodiment, the first flow channel section 22 includes three sequentially connected first pipe sections 221, second pipe sections 222 and third pipe sections 223, one end of the first pipe section 221 away from the second pipe section 222 extends to the outside of the base body 2 to form the external interface 2211, and the three sequentially connected first pipe sections 221, second pipe sections 222 and third pipe sections 223 surround the insertion hole 21, and one end of the two third pipe sections 223 away from the second pipe section 222 is connected to the second flow channel section 23, so that the two first flow channel sections 22 are connected. In this embodiment, the first flow channel section 22 is formed by splicing the first pipe section 221, the second pipe section 222 and the third pipe section 223, which is convenient for processing the first flow channel section 22.

[0038] In some embodiments, the first flow channel segment 22 further includes a fourth pipe segment 224 connected between the second pipe segment 222 and the third pipe segment 223, and the first pipe segment 221 and the second pipe segment 222, the second pipe segment 222 and the fourth pipe segment 224, and the fourth pipe segment 224 and the third pipe segment 223 are all vertically arranged.

[0039] Since the shaft base is generally a hexahedron, the first flow channel section 22 of this embodiment also includes a fourth pipeline section 224 connected between the second pipeline section 222 and the third pipeline section 223, which is formed by splicing the first pipeline section 221, the second pipeline section 222, the fourth pipeline section 224 and the third pipeline section 223. Since the first pipeline section 221, the second pipeline section 222, the fourth pipeline section 224 and the third pipeline section 223 surround the insertion hole 21, and the first pipeline section 221, the second pipeline section 222, the fourth pipeline section 224 and the third pipeline section 223 cannot be connected to the insertion hole 21, this embodiment In this embodiment, the first pipe segment 221 and the second pipe segment 222, the second pipe segment 222 and the fourth pipe segment 224, and the fourth pipe segment 224 and the third pipe segment 223 are all vertically arranged, so that the processing positions of the first pipe segment 221, the second pipe segment 222, the fourth pipe segment 224 and the third pipe segment 223 can be easily determined during processing. This structure is convenient for mass production of CNC processing equipment, reduces production costs, improves production efficiency, and prevents the first pipe segment 221, the second pipe segment 222, the fourth pipe segment 224 and the third pipe segment 223 from penetrating the insertion hole 21, resulting in product scrapping.

[0040] In some embodiments, the insertion hole 21 passes through the first side 24 and the second side 25 of the base body 2, the first side 24 is away from the second side 25, and the first pipe segment 221 extends to the third side 26 of the base body 2 away from the end of the second pipe segment 222, and the third side 26 is connected to both the first side 24 and the second side 25.

[0041] In this embodiment, by extending one end of the first pipe segment 221 away from the second pipe segment 222 to the third side surface 26 of the base body 2, that is, the external interface 2211 is located on the third side surface 26, on the one hand, it is convenient for processing the first pipe segment 221, and at the same time, it is convenient to connect the cooling medium through the external interface 2211, thereby preventing the external interface 2211 from leaking and flowing into the insertion hole 21, thereby affecting the operation of the equipment.

[0042] In some embodiments, the axis of the first pipe segment 221 is perpendicular to the third side surface 26 , which facilitates the positioning and processing of the first pipe segment 221 .

[0043] In some embodiments, the first pipe segment 221, the second pipe segment 222, the third pipe segment 223 and the fourth pipe segment 224 are all arranged perpendicular to the insertion hole 21, which is convenient for positioning and processing the first pipe segment 221, the second pipe segment 222, the third pipe segment 223 and the fourth pipe segment 224. This structure is convenient for mass production of CNC processing equipment, reduces production costs, improves production efficiency, and prevents the first pipe segment 221, the second pipe segment 222, the fourth pipe segment 224 and the third pipe segment 223 from penetrating the insertion hole 21, resulting in product scrapping.

[0044] In some embodiments, the second flow channel section 23 is arranged in parallel with the insertion hole 21, and the positioning and processing of the second flow channel section 23 prevent the second flow channel section 23 from penetrating with the insertion hole 21 and causing the product to be scrapped.

[0045] In some embodiments, at least one end of the second pipe segment 222, the third pipe segment 223, and the fourth pipe segment 224 extends outside the base body 2 to form an opening in the base body 2, and a plugging piece is provided at the opening. This structure facilitates the processing of the second pipe segment 222, the third pipe segment 223, and the fourth pipe segment 224, thereby improving production efficiency.

[0046] In some embodiments, the base body 2 is provided with at least three adjustment holes 27 that penetrate from the outside to the insertion hole 21, and at least three of the adjustment holes 27 are evenly distributed along the circumference of the insertion hole 21. An adjusting screw 28 is screwed into each of the adjustment holes 27. A bearing 3 is sleeved on the main shaft 1, and each of the adjusting screws 28 is against the bearing 3. During assembly, the concentricity of the main shaft 1 and the insertion hole 21 can be adjusted by the adjusting screws 28 to improve assembly efficiency.

[0047] Example 2

[0048] An embodiment of the present invention further provides a slotting device, which includes a main shaft 1 and the shaft base of embodiment 1.

[0049] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described equipment, devices and units can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0050] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A shaft base, used in a slotting device, the slotting device comprising a main shaft (1) and a shaft base, the shaft base comprising a base body (2), the base body (2) having an insertion hole (21), the main shaft (1) being arranged in the insertion hole (21), It is characterized in that A cooling channel is constructed inside the base body (2), and the cooling channel is used to cool the shaft base. The cooling channel comprises a second channel section (23) and two groups of first channel sections (22) surrounding the insertion hole (21), one end of the first channel section (22) extends outside the base body (2) to form an external interface (2211) of the cooling channel, and the two ends of the second channel section (23) are respectively connected to the other ends of the two first channel sections (22).

2. The shaft base according to claim 1, It is characterized in that The first flow channel section (22) comprises three sequentially connected first pipe sections (221), second pipe sections (222) and third pipe sections (223); one end of the first pipe section (221) away from the second pipe section (222) extends to the outside of the base body (2) to form an external interface (2211); and one end of the third pipe section (223) away from the second pipe section (222) is connected to the second flow channel section (23).

3. The shaft base according to claim 2, It is characterized in that The first flow channel section (22) further comprises a fourth pipeline section (224) connected between the second pipeline section (222) and the third pipeline section (223); the first pipeline section (221) and the second pipeline section (222), the second pipeline section (222) and the fourth pipeline section (224), and the fourth pipeline section (224) and the third pipeline section (223) are all arranged vertically.

4. The shaft base according to claim 3, It is characterized in that The insertion hole (21) passes through a first side surface (24) and a second side surface (25) of the base body (2); the first side surface (24) and the second side surface (25) are opposite to each other; an end of the first pipe section (221) away from the second pipe section (222) extends to a third side surface (26) of the base body (2); and the third side surface (26) is connected to both the first side surface (24) and the second side surface (25).

5. The shaft base according to claim 4, It is characterized in that The axis of the first pipe section (221) is arranged perpendicular to the third side surface (26).

6. The shaft base according to claim 4, It is characterized in that The first pipeline segment (221), the second pipeline segment (222), the third pipeline segment (223) and the fourth pipeline segment (224) are all arranged perpendicular to the insertion hole (21).

7. The shaft base according to claim 1, It is characterized in that The second flow channel section (23) is arranged in parallel with the insertion hole (21).

8. The shaft base according to claim 3, It is characterized in that At least one end of the second pipe segment (222), the third pipe segment (223) and the fourth pipe segment (224) extends outside the base body (2) to form an opening at the base body (2), and a sealing member is provided at the opening.

9. The shaft base according to claim 1, It is characterized in that The base body (2) is provided with at least three adjustment holes (27) extending from the outside to the insertion hole (21); the at least three adjustment holes (27) are evenly distributed along the circumference of the insertion hole (21); an adjustment screw (28) is screwed into each of the adjustment holes (27); a bearing (3) is sleeved on the main shaft (1); and each of the adjustment screws (28) abuts against the bearing (3).

10. A slotting device, It is characterized in that The slotting device comprises a main shaft (1) and a shaft base as described in any one of claims 1-9.

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