Roller body mechanism and slicing machine

Abstract

The utility model discloses a roller body mechanism and a slicing machine, and belongs to the technical field of silicon wafer machining devices. The roller body mechanism comprises a first roller body, a second roller body and a third roller body which are arranged at intervals, the first roller body and the second roller body are flush in the first direction, the third roller body, the first roller body and the second roller body are arranged at intervals in the second direction, and the second direction intersects with the first direction; the first roller body and the second roller body are of a cylindrical structure, at least one end of the third roller body is provided with an adjusting part, and the adjusting part is of a conical structure.

Description

Technical Field

[0001] The utility model relates to the technical field of silicon wafer processing devices, in particular to a roller mechanism and a slicer. Background Art

[0002] Silicon wafers are the core components of photovoltaic modules. During the processing of silicon wafers, a slicer is required to cut silicon rods into silicon wafers. The slicer may be a three-roller slicer, which includes three rollers arranged at intervals, through which diamond wires are tensioned to cut silicon rods into silicon wafers.

[0003] In the related art, the three rollers of the three-roller slicer are all conical rollers, specifically, the conical roller can be a roller with conical structures at both ends, or a roller with a shuttle structure. Alternatively, the three rollers of the three-roller slicer are all parallel rollers.

[0004] However, in the process of cutting silicon wafers, the above three tapered roller slicers have a tapered transition in the two tapered rollers at the top, so the tension is unstable during cutting, which affects the yield of silicon wafers, such as TTV, and also causes wire breakage and wire jump, which leads to high production costs of photovoltaic modules. In the process of cutting silicon wafers, the three parallel roller slicers cannot meet the requirements of thinning and slicing silicon rods due to insufficient tension of the diamond wire. Utility Model Content

[0005] The utility model discloses a roller mechanism and a slicer to solve or at least partially solve the problem in the prior art that, in the process of cutting silicon wafers, the two tapered rollers arranged at the top have a tapered transition, so the tension is unstable during cutting, which affects the yield of silicon wafers, such as TTV, and also causes wire breakage and wire jump, which leads to the problem of high production cost of photovoltaic modules. Alternatively, in the process of cutting silicon wafers, the three parallel roller slicers cannot meet the requirements of thinning and slicing silicon rods due to insufficient tension of the diamond wire during the cutting of silicon wafers.

[0006] In order to solve the above technical problems, the utility model is achieved as follows:

[0007] In the first aspect, the utility model discloses a roller mechanism, which includes a first roller, a second roller and a third roller arranged at intervals, the first roller and the second roller are aligned along a first direction, the third roller is arranged at intervals with the first roller and the second roller along a second direction, and the second direction intersects with the first direction; the first roller and the second roller are cylindrical structures, and at least one end of the third roller has an adjustment portion, and the adjustment portion has a conical structure.

[0008] Optionally, the adjusting portion includes a first adjusting portion and a second adjusting portion, wherein the first adjusting portion is connected to the second adjusting portion and is coaxially arranged with the second adjusting portion; along the direction of the first adjusting portion toward the second adjusting portion, the cross-sectional area of ​​the first adjusting portion gradually increases, and along the direction of the second adjusting portion toward the first adjusting portion, the cross-sectional area of ​​the second adjusting portion gradually increases.

[0009] Optionally, a cross-sectional area of ​​an end surface of the first adjusting portion close to the second adjusting portion is equal to a cross-sectional area of ​​an end surface of the second adjusting portion close to the first adjusting portion.

[0010] Optionally, alternatively, the adjusting portion has a revolution curved surface structure.

[0011] Optionally, the third roller body further includes at least one transition section, one end of the transition section is connected to the first adjusting portion, and the other end of the transition section is connected to the second adjusting portion.

[0012] Optionally, the cross-sectional area of ​​the end surface of the transition section close to the first adjustment portion is equal to the cross-sectional area of ​​the end surface of the first adjustment portion close to the transition section; and the cross-sectional area of ​​the end surface of the transition section close to the second adjustment portion is equal to the cross-sectional area of ​​the end surface of the second adjustment portion close to the transition section.

[0013] Optionally, along the direction extending from the first adjustment portion to the second adjustment portion, the cross-sectional area of ​​the transition section remains unchanged; or, the transition section has a stepped cone structure.

[0014] Optionally, along the direction from the first adjustment portion to the direction approaching the second adjustment portion, the diameter of the first adjustment portion gradually increases, and the increment of the diameter of the first adjustment portion is greater than 0 mm and less than or equal to 10 mm; along the direction from the second adjustment portion to the direction approaching the first adjustment portion, the diameter of the second adjustment portion gradually increases, and the increment of the diameter of the second adjustment portion is greater than 0 mm and less than or equal to 10 mm.

[0015] Optionally, the incremental amount of the diameter of the first adjustment portion and the incremental amount of the diameter of the second adjustment portion are both greater than 0 mm and less than or equal to 1 mm.

[0016] In a second aspect, the utility model discloses a slicer, comprising a slicer body and the roller mechanism described in the first aspect, wherein the roller mechanism is connected to the slicer body.

[0017] The utility model discloses a roller mechanism and a slicer, wherein the roller mechanism comprises a first roller, a second roller and a third roller arranged at intervals, wherein the first roller and the second roller are aligned along a first direction, and the third roller is arranged at intervals with the first roller and the second roller along a second direction, and the second direction intersects with the first direction; the first roller and the second roller are cylindrical structures, and at least one end of the third roller has an adjustment portion, and the adjustment portion has a conical structure. In the utility model, by arranging the first roller and the second roller in line with each other in the first direction, and both the first roller and the second roller are arranged in a cylindrical structure, the tension between the first roller and the second roller is made more stable, and the tension fluctuation between the first roller and the second roller is avoided, and the silicon wafer cutting yield is improved, thereby reducing the production cost of photovoltaic modules.

[0018] Furthermore, the third roller is spaced apart from the first roller and the second roller along the second direction, and at least one end of the third roller has an adjustment portion, which has a conical structure. The diamond wire is tensioned by the adjustment portion of the third roller, the tension of the diamond wire is increased, the cutting force of the diamond wire is improved, the silicon wafer cutting yield is improved, and the production cost of the photovoltaic module is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A scatter plot showing the thickness of silicon wafers cut by three conical roller slicers in the prior art;

[0020] Figure 2 A schematic diagram showing the structure of the roller mechanism in an embodiment of the utility model;

[0021] Figure 3 A side view showing a roller mechanism in an embodiment of the utility model;

[0022] Figure 4 A scatter plot showing the thickness of silicon wafers cut by a slicer in an embodiment of the utility model;

[0023] Figure 5 A schematic diagram showing the structure of a roller mechanism in another embodiment of the utility model;

[0024] Figure 6 A side view showing a roller mechanism in another embodiment of the present invention;

[0025] Figure 7 A scatter plot showing the thickness of silicon wafers cut by a slicer in another embodiment of the present invention.

[0026] Reference numerals:

[0027] 10: first roller body;

[0028] 20: second roller body;

[0029] 30: third roller body; 31: first adjustment portion; 32: second adjustment portion; 33: transition section;

[0030] A: first direction; B: second direction. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the fixed scope of the utility model.

[0032] It should be understood that the references to "one embodiment" or "an embodiment" throughout the specification mean that the specific features, structures, or characteristics associated with the embodiment are included in at least one embodiment of the present invention. Therefore, the references to "in one embodiment" or "in an embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0033] Reference Figure 1 , shows a scatter plot of the thickness of silicon wafers cut by three conical roller slicers in the prior art.

[0034] Figure 1 The X-axis C1 represents the number of silicon wafers, and the Y-axis represents the average thickness of the silicon wafers. Figure 1 It can be seen that when a slicer with three conical rollers is used to cut silicon rods into silicon wafers, the thickness of some silicon wafers fluctuates greatly, and the yield of the silicon wafers is difficult to guarantee, which leads to a high production cost of photovoltaic modules.

[0035] Reference Figure 2 , showing a schematic structural diagram of the roller mechanism described in the embodiment of the utility model; referring to Figure 3 , showing a side view of the roller mechanism in the embodiment of the utility model; referring to Figure 5 , showing a schematic structural diagram of the roller mechanism in another embodiment of the utility model; referring to Figure 6 , shows a side view of the roller mechanism in another embodiment of the utility model.

[0036] like Figure 2 and Figure 3 as well as Figure 5 and Figure 6As shown, the embodiment of the utility model discloses a roller mechanism, which includes a first roller 10, a second roller 20 and a third roller 30 arranged at intervals. The first roller 10 and the second roller 20 are aligned along a first direction A, and the third roller 30 is arranged at intervals with the first roller 10 and the second roller 20 along a second direction B, and the second direction B intersects the first direction A; the first roller 10 and the second roller 20 are cylindrical structures, and at least one end of the third roller 30 has an adjustment portion, which has a cone structure and is used to adjust the tension of the diamond wire.

[0037] The roller mechanism disclosed in the embodiment of the utility model can be rotatably connected to the slicer, so that the diamond wire is tensioned by the roller mechanism, and then the silicon rod is cut into silicon wafers by the diamond wire. When the slicer with the roller mechanism is used to cut silicon wafers, the thickness fluctuation of the silicon wafers is small, and the yield of the silicon wafers is high, thereby reducing the production cost of photovoltaic modules.

[0038] like Figure 2 and Figure 3 as well as Figure 5 and Figure 6 As shown, the roller mechanism disclosed in the embodiment of the utility model includes a first roller body 10, a second roller body 20 and a third roller body 30. Among them, the first roller body 10, the second roller body 20 and the third roller body 30 are arranged at intervals, and the first roller body 10 and the second roller body 20 are aligned along the first direction A, and the third roller body 30 is arranged at intervals with the first roller body 10 and the second roller body 20 along the second direction B. The first roller body 10, the second roller body 20 and the third roller body 30 in the embodiment of the utility model are rotatably connected to the slicer, and the diamond wire is wound around the surfaces of the first roller body 10, the second roller body 20 and the third roller body 30, so that the diamond wire can be tensioned through the first roller body 10, the second roller body 20 and the third roller body 30.

[0039] It should be noted that the first direction A in the embodiment of the present invention intersects with the second direction B. Exemplarily, the first direction A is perpendicular to the second direction B.

[0040] like Figure 2 and Figure 3 as well as Figure 5 and Figure 6 As shown, the first roller body 10 and the second roller body 20 in the embodiment of the utility model are both cylindrical structures, and at least one end of the third roller body 30 has an adjustment portion, and the adjustment portion has a conical structure. In other words, the first roller body 10 and the second roller body 20 are cylindrical. The third roller body 30 includes a first end and a second end that are arranged opposite to each other, and the first end and / or the second end has an adjustment portion, and the adjustment portion has a conical structure.

[0041] Specifically, if the first end of the third roller body 30 has an adjustment portion, the first end has a tapered structure, and the diameter of the tapered structure gradually increases along the direction extending from the first end to the second end. If the second end of the third roller body 30 has an adjustment portion, the second end has a tapered structure, and the diameter of the tapered structure gradually increases along the direction extending from the second end to the first end. Of course, the first end and the second end of the third roller body 30 may also both have an adjustment portion, and the adjustment portion has a tapered structure. And along the direction extending from the first end to the second end, the diameter of the adjustment portion provided at the first end gradually increases, and along the direction extending from the second end to the first end, the diameter of the adjustment portion provided at the second end also gradually increases.

[0042] In the case where both the first end and the second end of the third roller body 30 have an adjustment portion, the amount of change in the diameter of the adjustment portion provided at the first end and the amount of change in the diameter of the adjustment portion provided at the second end may be the same or different. It can be understood that when the amount of change in the diameter of the adjustment portion provided at the first end and the amount of change in the diameter of the adjustment portion provided at the second end are the same, the adjustment portion provided at the first end and the adjustment portion provided at the second end are symmetrical along the perpendicular midline of the axis of the third roller body 30. When the amount of change in the diameter of the adjustment portion provided at the first end and the amount of change in the diameter of the adjustment portion provided at the second end may also be different, the adjustment portion provided at the first end and the adjustment portion provided at the second end are asymmetrical along the perpendicular midline of the axis of the third roller body 30.

[0043] It should be noted that the adjustment portion in the embodiment of the utility model can be a uniform cone structure or a stepped cone structure.

[0044] In addition, when both the first end and the second end of the third roller body 30 have an adjustment portion, the third roller body 30 may further include a transition section 33 located between the two adjustment portions. Here, no further description is given, and a detailed description is given in the following embodiments. In the embodiment of the utility model, the first roller body 10 and the second roller body 20 are arranged flush along the first direction A, and the first roller body 10 and the second roller body 20 are both arranged in a cylindrical structure. Thus, the tension between the first roller body 10 and the second roller body 20 is more stable, and the tension fluctuation between the first roller body 10 and the second roller body 20 is avoided, thereby improving the silicon wafer cutting yield and reducing the production cost of photovoltaic modules.

[0045] Furthermore, the third roller body 30 is spaced apart from the first roller body 10 and the second roller body 20 along the second direction B, and at least one end of the third roller body 30 has an adjustment portion, and the adjustment portion has a cone structure. Thus, the diamond wire is tensioned by the adjustment portion of the third roller body 30, the tension of the diamond wire is increased, the cutting force of the diamond wire is improved, and the silicon wafer cutting yield is improved, thereby reducing the production cost of photovoltaic modules.

[0046] It should be noted that the axis of the first roller body 10, the axis of the second roller body 20 and the axis of the third roller body 30 in the embodiment of the utility model are parallel along the third direction. The third direction intersects with the first direction A and the second direction B. Exemplarily, the third direction is perpendicular to the first direction A and the second direction B.

[0047] In addition, in the embodiment of the utility model, the diameter of the first roller body 10 can be set to be equal to the diameter of the second roller body 20, so that the diamond wire wound around the first roller body 10 and the second roller body 20 can be more stable.

[0048] Alternatively, if Figure 2 and Figure 3 As shown, the adjustment portion in the embodiment of the utility model includes a first adjustment portion 31 and a second adjustment portion 32. The first adjustment portion 31 is connected to the second adjustment portion 32 and is coaxially arranged with the second adjustment portion 32. Along the direction of the first adjustment portion 31 toward the second adjustment portion 32, the cross-sectional area of ​​the first adjustment portion 31 gradually increases, and along the direction of the second adjustment portion 32 toward the first adjustment portion 31, the cross-sectional area of ​​the second adjustment portion 32 gradually increases.

[0049] like Figure 2 and Figure 3 As shown, the adjustment part in the embodiment of the utility model includes a first adjustment part 31 and a second adjustment part 32, and the first adjustment part 31 is connected to the second adjustment part 32 and is coaxially arranged with the second adjustment part 32. Exemplarily, the first adjustment part 31 can be integrally formed with the second adjustment part 32, and the first adjustment part 31 can be snapped into the second adjustment part 32. Of course, in the embodiment of the utility model, there are no excessive restrictions on the specific way in which the first adjustment part 31 is connected to the second adjustment part 32. In actual applications, technicians can select a suitable connection method as needed.

[0050] like Figure 2 and Figure 3 As shown, along the direction from the first adjusting portion 31 to the direction close to the second adjusting portion 32, the cross-sectional area of ​​the first adjusting portion 31 gradually increases. Along the direction from the second adjusting portion 32 to the direction close to the first adjusting portion 32, the cross-sectional area of ​​the second adjusting portion 32 also gradually increases. Thus, the diamond wire can be tensioned by the first adjusting portion 31 and the second adjusting portion 32 to increase the tension of the diamond wire and improve the cutting force of the diamond wire. The silicon wafer cut out by the diamond wire has a high thickness consistency and a high silicon wafer yield, which helps to reduce the production cost of photovoltaic modules.

[0051] Reference Figure 4 , shows a scatter plot of the thickness of silicon wafers cut by a slicer in an embodiment of the utility model.

[0052] Figure 4The X-axis C2 represents the number of silicon wafers, and the Y-axis represents the average thickness of the silicon wafers. Figure 4 It can be seen that silicon wafers cut by a slicer having a roller mechanism disclosed in an embodiment of the utility model have smaller thickness fluctuations, higher thickness consistency, and higher yield rates, thereby helping to reduce the production cost of photovoltaic modules.

[0053] Alternatively, if Figure 2 and Figure 3 As shown, in the embodiment of the present invention, the cross-sectional area of ​​the end surface of the first adjusting portion 31 close to the second adjusting portion 32 is equal to the cross-sectional area of ​​the end surface of the second adjusting portion 32 close to the first adjusting portion 31 .

[0054] like Figure 2 and Figure 3 As shown, in the embodiment of the utility model, the cross-sectional area of ​​the end surface of the first adjustment portion 31 close to the second adjustment portion 32 is set to be equal to the cross-sectional area of ​​the end surface of the second adjustment portion 32 close to the first adjustment portion 31. Thus, the transition at the connection between the first adjustment portion 31 and the second adjustment portion 32 is smoother, and the stability of the diamond wire is better.

[0055] Alternatively, the adjustment part in the embodiment of the utility model has a revolving curved surface mechanism. That is, when the first end of the third roller body 30 has an adjustment part, the adjustment part has a revolving curved surface mechanism. When the second end of the third roller body 30 has an adjustment part, the adjustment part also has a revolving curved surface structure. When both the first end and the second end of the third roller body 30 have an adjustment part, the adjustment parts at the first end and the second end both have a revolving curved surface structure.

[0056] For example, the first adjusting portion 31 and the second adjusting portion 32 in the embodiment of the utility model can be configured to have a revolved curved surface structure, and the diamond wire can be tensioned by the first adjusting portion 31 and the second adjusting portion 32 having the revolved curved surface structure. This can increase the tension of the diamond wire and improve the cutting force of the diamond wire. The silicon wafer cut out by the diamond wire has a high thickness consistency and a high silicon wafer yield, which helps to reduce the production cost of photovoltaic modules.

[0057] It should be noted that when the first adjustment portion 31 has a revolution curved surface structure, along the extension direction of the third roller body 30, the outer wall of the first adjustment portion 31 is an arc, and the center of curvature of the arc can be located on the inner side of the first adjustment portion 31, that is, the curve is a convex curve. The center of curvature of the arc can also be located on the outer side of the first adjustment portion 31, that is, the curve is a concave curve. The structure of the second adjustment portion 32 refers to the first adjustment portion 31, and will not be repeated here.

[0058] Alternatively, if Figure 5 and Figure 6As shown, the third roller body 30 in the embodiment of the utility model further includes at least one transition section 33 , one end of the transition section 33 is connected to the first adjustment portion 31 , and the other end is connected to the second adjustment portion 32 .

[0059] For example, Figure 5 and Figure 6 As shown, the third roller body 30 in the embodiment of the utility model includes a first adjustment portion 31, a second adjustment portion 32 and a transition section 33. Among them, the transition section 33 is arranged between the first adjustment portion 31 and the second adjustment portion 32. It can be understood that one end of the transition section 33 is connected to the first adjustment portion 31, and the other end is connected to the second adjustment portion 32. The third roller body 30 formed by the first adjustment portion 31, the transition section 33 and the second adjustment portion 32 tensions the diamond wire, enhances the tension of the diamond wire, and improves the cutting force of the diamond wire, so as to improve the silicon wafer cutting yield, thereby reducing the production cost of photovoltaic modules.

[0060] It should be noted that the transition section 33 in the embodiment of the utility model may include one or more. Exemplarily, when the transition section 33 includes one, the transition section 33 may be a cylindrical structure, one end of the transition section 33 of the cylindrical structure is connected to the first adjustment portion 31, and the other end is connected to the second adjustment portion 32. The third roller body 30 is a shuttle-shaped structure as a whole. It can be understood that the two ends of the third roller body 30 are conical structures, and the middle part is a cylindrical structure. When the transition section 33 includes multiple, each transition section 33 can be a conical structure, and multiple transition sections 33 are connected together, so as to form multiple sections of progressive conical structures with increasing diameters along the axis of the third roller body 30 at both ends of the third roller body 30.

[0061] Of course, the above are only individual examples of the specific structure of the transition section 33 in the embodiment of the present utility model, and are not intended to limit the present utility model. In actual applications, technicians can also set the specific structure of the transition section 33 as needed.

[0062] Alternatively, if Figure 5 and Figure 6 As shown, the cross-sectional area of ​​the end face of the transition section 33 close to the first adjustment portion 31 in the embodiment of the utility model is equal to the cross-sectional area of ​​the end face of the first adjustment portion 31 close to the transition section 33, and the cross-sectional area of ​​the end face of the transition section 33 close to the second adjustment portion 32 is equal to the cross-sectional area of ​​the end face of the second adjustment portion 32 close to the transition section 33.

[0063] like Figures 5 and 6As shown, in the embodiment of the utility model, the cross-sectional area of ​​the end face of the transition section 33 close to the first adjustment part 31 is set to be equal to the cross-sectional area of ​​the end face of the first adjustment part 31 close to the transition section 33, and the cross-sectional area of ​​the end face of the transition section 33 close to the second adjustment part 32 is set to be equal to the cross-sectional area of ​​the end face of the second adjustment part 32 close to the transition section 33. This makes the transition between the connection between the first adjustment part 31 and the transition section 33, and the connection between the second adjustment part 32 and the transition section 33 smoother, and the stability of the diamond wire is better. As a result, the thickness fluctuation of the cut silicon wafer is smaller, the thickness consistency of the silicon wafer is higher, and the yield of the silicon wafer is higher, thereby further reducing the production cost of photovoltaic modules.

[0064] Reference Figure 7 , shows a scatter plot of the thickness of a silicon wafer cut by a slicer in another embodiment of the utility model.

[0065] Figure 7 The X-axis C1 represents the number of silicon wafers, and the Y-axis represents the average thickness of the silicon wafers. Figure 7 It can be seen that silicon wafers cut by a slicer having the roller mechanism in the embodiment of the utility model have smaller thickness fluctuations, higher thickness consistency, and higher yield of silicon wafers, which helps to reduce the production cost of photovoltaic modules.

[0066] Alternatively, if Figure 5 and Figure 6 As shown, along the direction extending from the first adjustment portion 31 to the second adjustment portion 32 , the cross-sectional area of ​​the transition section 33 remains unchanged; or, the transition section 33 is in a stepped cone structure.

[0067] like Figures 5 and 6 As shown, in the embodiment of the utility model, the cross-sectional area of ​​the transition section 33 remains unchanged along the direction extending from the first adjustment portion 31 to the second adjustment portion 32. That is, the transition section 33 is a cylindrical structure to avoid excessive tension of the diamond wire, which may cause damage to the diamond wire.

[0068] In the embodiment of the utility model, the transition section 33 can also be set as a stepped cone structure to further tighten the diamond wire through the transition section 33 of the stepped cone structure, increase the tension of the diamond wire, and improve the cutting force of the diamond wire, so as to improve the silicon wafer cutting yield, thereby reducing the production cost of photovoltaic modules.

[0069] Specifically, along the direction of the perpendicular midline of the axis of the first adjustment portion 31 toward the transition section 33, the diameter of the transition section 33 gradually increases. Along the direction of the perpendicular midline of the axis of the second adjustment portion 32 toward the transition section 33, the diameter of the transition section 33 also gradually increases. In other words, along the direction of the perpendicular midline of the axis of the first adjustment portion 31 toward the transition section 33, the angle between the axis of the transition section 33 and the outer wall of the transition section 33 gradually decreases. Along the direction of the perpendicular midline of the axis of the second adjustment portion 32 toward the transition section 33, the angle between the axis of the transition section 33 and the outer wall of the transition section 33 also gradually decreases.

[0070] It should be noted that the above are only individual examples of the specific structure of the transition section 33 and are not intended to limit the present invention. In actual applications, the cross-sectional area of ​​the transition section 33 may also be changed as required to increase the tension of the diamond wire and improve the cutting force of the diamond wire.

[0071] Optionally, along the direction from the first adjustment portion 31 to the second adjustment portion 32, the diameter of the first adjustment portion 31 gradually increases, and the incremental amount of the diameter of the first adjustment portion 31 is greater than 0 mm and less than or equal to 10 mm; along the direction from the second adjustment portion 32 to the first adjustment portion 31, the diameter of the second adjustment portion 32 gradually increases, and the incremental amount of the diameter of the second adjustment portion 32 is greater than 0 mm and less than or equal to 10 mm.

[0072] With the gradual development of silicon wafer slicing technology, the diamond wire has gradually become thinner. The groove pitch on the roller mechanism has gradually become smaller, and the number of grooves has increased. The length of the diamond wire has also increased accordingly. As the length of the diamond wire increases, its own tension will also increase. In order to avoid excessive tension of the diamond wire, it will exceed the bearing limit of the diamond wire and cause damage to the diamond wire. In the embodiment of the utility model, the diameter of the first adjustment part 31 is set to gradually increase along the direction from the first adjustment part 31 to the direction close to the second adjustment part 32, and the increment of the diameter of the first adjustment part 31 is greater than 0mm and less than or equal to 10mm.

[0073] Exemplarily, along the direction from the first adjustment portion 31 to the second adjustment portion 32 , the incremental amount of the diameter of the first adjustment portion 31 is set to 0.5 mm, 2 mm, 4 mm, 6 mm, 8 mm, 10 mm, etc.

[0074] Preferably, the increment of the diameter of the first adjustment portion 31 is set to be greater than 0 mm and less than or equal to 1 mm along the direction from the first adjustment portion 31 to the second adjustment portion 32. This is to improve the tension of the diamond wire while better protecting the diamond wire and avoiding damage to the diamond wire. For example, the increment of the diameter of the first adjustment portion 31 can be set to 0.2 mm, 0.4 mm, 0.6 mm, 0.8 mm, 1 mm, etc.

[0075] Similarly, to avoid excessive tension of the diamond wire, which may exceed the bearing limit of the diamond wire and cause the diamond wire to break, in the embodiment of the utility model, the diameter of the second adjustment portion 32 is set to gradually increase along the direction of the second adjustment portion 32 toward the first adjustment portion 31, and the increment of the diameter of the second adjustment portion 32 is also greater than 0 mm and less than or equal to 10 mm.

[0076] Exemplarily, along the direction from the second adjustment portion 32 to the first adjustment portion 31 , the increment of the diameter of the second adjustment portion 32 is set to 1 mm, 3 mm, 5 mm, 7 mm, 9 mm, 10 mm, etc.

[0077] Preferably, the increment of the diameter of the second adjustment portion 32 is set to be greater than 0 mm and less than or equal to 1 mm along the direction from the second adjustment portion 32 to the first adjustment portion 31. This is to improve the tension of the diamond wire while better protecting the diamond wire and avoiding damage to the diamond wire. For example, the increment of the diameter of the second adjustment portion 32 can be set to 0.2 mm, 0.4 mm, 0.6 mm, 0.8 mm, 1 mm, etc.

[0078] The utility model embodiment discloses a roller mechanism, the roller mechanism comprises a first roller, a second roller and a third roller arranged at intervals, wherein the first roller and the second roller are aligned along a first direction, the third roller is arranged at intervals with the first roller and the second roller along a second direction, the second direction intersects with the first direction; the first roller and the second roller are cylindrical structures, at least one end of the third roller has an adjustment portion, and the adjustment portion has a conical structure. In the utility model embodiment, by arranging the first roller and the second roller in line with each other in the first direction, and the first roller and the second roller are both arranged in a cylindrical structure, the tension between the first roller and the second roller is made more stable, the tension fluctuation between the first roller and the second roller is avoided, the silicon wafer cutting yield is improved, and the production cost of photovoltaic modules is reduced.

[0079] Furthermore, the third roller is spaced apart from the first roller and the second roller along the second direction, and at least one end of the third roller has an adjustment portion, which has a conical structure. The diamond wire is tensioned by the adjustment portion of the third roller, the tension of the diamond wire is increased, the cutting force of the diamond wire is improved, the silicon wafer cutting yield is improved, and the production cost of the photovoltaic module is reduced.

[0080] The utility model also discloses a slicer in an embodiment. The slicer comprises a slicer body and the roller mechanism described in the above embodiment. The roller mechanism is connected to the slicer body.

[0081] It should be noted that in the embodiment of the utility model, the roller mechanism included in the slicer has the same structure as the roller mechanism described in the above embodiment, and its beneficial effects are also similar, which will not be described in detail here.

[0082] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0083] Although the optional embodiments of the utility model embodiments have been described, those skilled in the art, once knowing the basic creative concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including optional embodiments and all changes and modifications falling within the scope of the utility model embodiments.

[0084] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity from another entity, and do not necessarily require or imply any such actual relationship or order between these entities. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that an article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such article or terminal device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the article or terminal device including the elements.

[0085] The technical solution provided by the present invention is introduced in detail above. Specific examples are used in this article to illustrate the principle and implementation method of the present invention. At the same time, for those skilled in the art, according to the principle and implementation method of the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A roller mechanism, comprising: The first roller body (10), the second roller body (20) and the third roller body (30) are arranged at intervals, characterized in that: The first roller body (10) and the second roller body (20) are aligned along a first direction (A), and the third roller body (30) is arranged spaced apart from the first roller body (10) and the second roller body (20) along a second direction (B), and the second direction (B) intersects with the first direction (A); The first roller body (10) and the second roller body (20) are cylindrical structures, and at least one end of the third roller body has an adjustment portion, and the adjustment portion has a conical structure.

2. The roller mechanism according to claim 1, characterized in that: The adjusting portion comprises a first adjusting portion (31) and a second adjusting portion (32), wherein: The first adjusting portion (31) is connected to the second adjusting portion (32) and is coaxially arranged with the second adjusting portion (32); Along the direction from the first adjusting portion (31) to the direction close to the second adjusting portion (32), the cross-sectional area of ​​the first adjusting portion (31) gradually increases, and along the direction from the second adjusting portion (32) to the direction close to the first adjusting portion (31), the cross-sectional area of ​​the second adjusting portion (32) gradually increases.

3. The roller mechanism according to claim 2, characterized in that: The cross-sectional area of ​​the end surface of the first adjusting portion (31) close to the second adjusting portion (32) is equal to the cross-sectional area of ​​the end surface of the second adjusting portion (32) close to the first adjusting portion (31).

4. The roller mechanism according to claim 1, characterized in that: Alternatively, the adjustment portion has a revolution curved surface structure.

5. The roller mechanism according to claim 2, characterized in that: The third roller body (30) further comprises at least one transition section (33), one end of the transition section (33) being connected to the first adjustment portion (31), and the other end of the transition section (33) being connected to the second adjustment portion (32).

6. The roller mechanism according to claim 5, characterized in that: The cross-sectional area of ​​the end surface of the transition section (33) close to the first adjustment portion (31) is equal to the cross-sectional area of ​​the end surface of the first adjustment portion (31) close to the transition section (33); Furthermore, the cross-sectional area of ​​the end surface of the transition section (33) close to the second adjustment portion (32) is equal to the cross-sectional area of ​​the end surface of the second adjustment portion (32) close to the transition section (33).

7. The roller mechanism according to claim 6, characterized in that: Along the direction extending from the first adjustment portion (31) to the second adjustment portion (32), the cross-sectional area of ​​the transition section (33) remains unchanged; Alternatively, the transition section (33) has a stepped cone structure.

8. The roller mechanism according to claim 2, characterized in that: Along the direction from the first adjusting portion (31) to the second adjusting portion (32), the diameter of the first adjusting portion (31) gradually increases, and the increment of the diameter of the first adjusting portion (31) is greater than 0 mm and less than or equal to 10 mm; Along the direction from the second adjusting portion (32) toward the first adjusting portion (31), the diameter of the second adjusting portion (32) gradually increases, and the increment of the diameter of the second adjusting portion (32) is greater than 0 mm and less than or equal to 10 mm.

9. The roller mechanism according to claim 8, characterized in that: The increment of the diameter of the first adjustment portion (31) and the increment of the diameter of the second adjustment portion (32) are both greater than 0 mm and less than or equal to 1 mm.

10. A slicer, characterized in that: It comprises a slicer body and a roller mechanism according to any one of claims 1 to 9, wherein the roller mechanism is connected to the slicer body.

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