Main roller and cutting equipment

Abstract

The utility model relates to the technical field of cutting equipment, and provides a main roller and cutting equipment, the main roller comprises a main roller body provided with a trunking, the trunking is at least provided with a pair of first side walls and a pair of second side walls, the first side walls are located on the sides, away from the central axis of the main roller body, of the second side walls, and the first side walls are connected with the second side walls; the pair of first side walls are parallel and are perpendicular to the central axis of the main roller body; the second side walls incline relative to the first side walls and the central axis of the main roller body, and the distance between the pair of second side walls is gradually increased in the direction away from the central axis of the main roller body. Thus, the pair of second side walls can stabilize the target cutting line at the bottom of the line groove, it can be ensured that the target cutting line smoothly enters the line groove, swing of the target cutting line in the cutting process can be reduced, meanwhile, the pair of first side walls can increase the difficulty that the target cutting line slides out of the line groove, the probability that the target cutting line slides out of the line groove is effectively reduced, and the cutting efficiency is improved. And wire jumping and wire breaking abnormities in the cutting process are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to cutting equipment technical field especially, relate to a kind of main roller and cutting equipment. BACKGROUND

[0002] Silicon wafer plays a vital role in photovoltaic power generation, is the core material of solar cell. To reduce the cost of solar cell, silicon wafer gradually presents the development trend of thin sheet, large size. Silicon wafer is made of high-purity silicon material sheet, usually cut into a certain thickness by cutting line arranged on main roller. A plurality of line grooves are provided on the outer surface of the main roller, and the cutting line is arranged in the line groove. The line groove supports and carries the cutting line.

[0003] In related art, the cross-sectional shape of the line groove on the main roller is usually V-shaped. The V-shaped groove has a large size, which can ensure that the cutting line can smoothly enter the line groove. However, it is found that the cutting line easily slips out of the line groove during the specific cutting process, which causes the problems of wire jump and wire breakage. The wire jump and wire breakage during the silicon wafer cutting process can cause abnormal total thickness variation (TTV) of the silicon wafer, resulting in low overall yield and high cost.

[0004] Therefore, how to solve the problem of the cutting line easily slipping out of the line groove in related art has become an important technical problem for technicians in the field to solve. SUMMARY

[0005] The utility model provides a kind of main roller and cutting equipment to solve the defect that cutting line easily slips out of line groove in related art.

[0006] The utility model provides a kind of main roller, including main roller body, the outer surface of the main roller body is provided with line groove, the line groove extends along the circumference of the main roller body, the line groove at least has a pair of first side wall and a pair of second side wall, the first side wall is located at the side of the second side wall away from the central axis of the main roller body, the first side wall is connected with the second side wall;

[0007] A pair of the first side wall is parallel to each other, and the first side wall is perpendicular to the central axis of the main roller body.

[0008] The second side wall is inclinedly arranged relative to the first side wall and the central axis of the main roller body, and the distance between a pair of the second side wall gradually increases in the direction away from the central axis of the main roller body.

[0009] According to the utility model provide a kind of main roller, the wire slot further has third side wall, the third side wall is located the second side wall near the center axis of the main roller body one side;

[0010] The shape of the third side wall at the axial section of the main roller body is a circular arc, and the pair of second side walls are smoothly connected with the third side wall.

[0011] According to the utility model provide a kind of main roller, the second side wall is tangent to the third side wall.

[0012] According to the utility model provide a kind of main roller, the diameter of the circular arc is equal to the diameter of the target cutting line.

[0013] According to the utility model provide a kind of main roller, the pair of first side walls are symmetrical about a reference surface, the pair of second side walls are symmetrical about the reference surface, and the reference surface is perpendicular to the center axis of the main roller body.

[0014] According to the utility model provide a kind of main roller, the main roller body includes a main roller body and a cladding layer, the cladding layer is covered on the outside of the main roller body, the cladding layer is fixed relative to the main roller body, and the wire slot is arranged on the cladding layer.

[0015] According to the utility model provide a kind of main roller, the material of the cladding layer is polyurethane.

[0016] According to the utility model provide a kind of main roller, the thickness of the cladding layer is at least twice the depth of the wire slot, and the depth of the wire slot is the size of the wire slot in the direction perpendicular to the axis of the main roller body.

[0017] According to the utility model provide a kind of main roller, the wire slot is provided with a plurality of wire slots, and the plurality of wire slots are distributed in the axial direction of the main roller body.

[0018] The utility model also provides a cutting equipment, which comprises the main roller.

[0019] The main roller provided by the utility model, which comprises a main roller body, a wire slot is arranged on the outer surface of the main roller body for the target cutting wire to enter, the wire slot extends along the circumference of the main roller body, and a part of the target cutting wire in the length direction is arranged around the wire slot. The wire slot is provided with at least a pair of first side walls and a pair of second side walls, and the pair of first side walls are located on the side of the pair of second side walls away from the central axis of the main roller body. That is to say, the first side wall is closer to the slot opening of the wire slot than the second side wall. The pair of first side walls are parallel to each other, and the first side wall is perpendicular to the central axis of the main roller body. The second side wall is arranged to be inclined relative to the first side wall and the central axis of the main roller body, and the first side wall is connected with the second side wall. The distance between the pair of second side walls gradually increases in the direction away from the central axis of the main roller body. In this way, the main roller slot is optimally designed, so that the size of the position of the wire slot close to the slot opening is greater than the size of the position of the wire slot close to the slot bottom, and the size of the position of the wire slot close to the slot bottom is close to the diameter of the target cutting wire, that is to say, the size of the position of the wire slot close to the slot opening is greater than the diameter of the target cutting wire, so that the target cutting wire can smoothly enter the wire slot. Moreover, the second side wall can stabilize the target cutting wire at the bottom of the wire slot, so that the target cutting wire can smoothly enter the wire slot and the swing of the target cutting wire in the cutting process is reduced. The pair of first side walls are perpendicular to the central axis of the main roller body, if the target cutting wire is located between the pair of first side walls, the force generated by the first side wall on the target cutting wire is parallel to the central axis of the main roller body, and there is no force in the opening direction of the wire slot, therefore, in the cutting process, when the target cutting wire is located between the pair of first side walls, the target cutting wire basically will not slide to the slot opening of the wire slot, but will slide to the bottom of the wire slot under the action of the tension of the target cutting wire and the pressure received, so that the difficulty of the target cutting wire sliding out of the wire slot is increased, the probability of the target cutting wire sliding out of the wire slot is effectively reduced, the abnormality of the cutting process caused by the wire jumping and the wire breaking is reduced, and the problem that the cutting wire is easy to slide out to the outside of the wire slot in the related art is solved. Therefore, the yield is improved, and the cost is reduced.

[0020] Further, in the cutting equipment provided by the utility model, since the main roller is provided, various advantages as described above are also provided. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the utility model or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0022] Figure 1 It is a sectional view of part of the structure of the main roller provided by the utility model.

[0023] Reference signs:

[0024] 1, main roller body; 2, wire slot; 3, first side wall; 4, second side wall; 5, third side wall; 6, target cutting line. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the utility model clearer, the technical scheme in the utility model will be described clearly and completely in combination with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0026] In the description of the embodiments of the utility model, it should be explained that the orientation or position relationship indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relationship shown in the drawings, which is only for the convenience of describing the embodiments of the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, a particular orientation and operation, therefore, it cannot be understood as a limitation on the embodiments of the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the utility model embodiments. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of different embodiments or examples without contradiction.

[0028] The utility model is described below in combination with Figure 1 The main roller of the utility model is described.

[0029] As Figure 1 shown, the main roller provided by the utility model embodiment comprises a main roller body 1.

[0030] Specifically, a wire slot 2 is arranged on the outer surface of the main roller body 1 for the target cutting wire 6 to enter. The wire slot 2 extends along the circumference of the main roller body 1, and a part of the length direction of the target cutting wire 6 is arranged in the wire slot 2.

[0031] The wire slot 2 has at least a pair of first side walls 3 and a pair of second side walls 4, and the pair of first side walls 3 is located on the side away from the central axis of the main roller body 1 relative to the pair of second side walls 4. That is, relative to the second side wall 4, the first side wall 3 is closer to the slot opening of the wire slot 2.

[0032] The main roller body 1 is in a cylindrical shape, Figure 1 Only part of the structure of the main roller body 1 is shown in the drawing, and it is a sectional view. The central axis of the main roller body 1 is Figure 1 The straight line indicated by n.

[0033] The pair of first side walls 3 are parallel to each other, and the first side wall 3 is perpendicular to the central axis of the main roller body 1. The second side wall 4 is arranged obliquely relative to the first side wall 3 and the central axis of the main roller body 1, and the first side wall 3 is connected to the second side wall 4. The distance between the pair of second side walls 4 gradually increases in the direction away from the central axis of the main roller body 1.

[0034] In this way, by optimizing the design of the main roller slot, the size of the wire slot 2 at the position close to the slot opening is greater than the size of the wire slot 2 at the position close to the slot bottom, and the size of the wire slot 2 at the position close to the slot bottom is close to the diameter of the target cutting wire 6, that is, the size of the wire slot 2 at the position close to the slot opening is greater than the diameter of the target cutting wire 6, which can facilitate the target cutting wire 6 to smoothly enter the wire slot 2. Moreover, the second side wall 4 can stabilize the target cutting wire 6 at the bottom of the wire slot 2, which can not only ensure the target cutting wire 6 to smoothly enter the wire slot 2, but also reduce the swing of the target cutting wire 6 during cutting. At the same time, the pair of first side walls 3 are perpendicular to the central axis of the main roller body 1, and if the target cutting wire 6 is located between the pair of first side walls 3, the force generated by the first side wall 3 on the target cutting wire 6 is parallel to the central axis of the main roller body 1, and there is no force in the opening direction of the wire slot 2. Therefore, during cutting, when the target cutting wire 6 is located between the pair of first side walls 3, it basically will not slide to the slot opening position of the wire slot 2, but will slide to the bottom of the wire slot 2 under the action of the tension of the target cutting wire 6 and the pressure it receives, which increases the difficulty of the target cutting wire 6 sliding out of the wire slot 2, effectively reduces the probability of the target cutting wire 6 sliding out of the wire slot 2, reduces the abnormality of line jumping and line breaking during cutting, and solves the problem of the cutting wire easily sliding out to the outside of the wire slot 2 in the related art. Thus, the yield rate is improved, and the cost is reduced.

[0035] In the embodiment, the wire slot 2 is provided with a plurality of wire slots 2, and the plurality of wire slots 2 are distributed along the axis direction of the main roller body 1. Each wire slot 2 can correspond to a target cutting line 6, and the main roller can simultaneously wind a plurality of target cutting lines 6 to realize multi-wire cutting. The cutting efficiency can be significantly improved, and the cutting time can be shortened, especially in a production environment that requires a large number of cuttings.

[0036] In the embodiment of the utility model, the wire slot 2 also has a third side wall 5, and the third side wall 5 is located on the side of the second side wall 4 close to the central axis of the main roller body 1, that is, the third side wall 5 is located at the bottom of the wire slot 2, and the third side wall 5 serves as the groove bottom of the wire slot 2 and is used to contact the target cutting line 6 to support the target cutting line 6.

[0037] In the embodiment, the shape of the third side wall 5 at the axial section of the main roller body 1 is a circular arc shape. The axial section of the main roller body 1 is a plane passing through the central axis of the main roller body 1, the end face of the main roller body 1 is circular, and the axial section of the main roller body 1 passes through the diameter of the end face of the main roller body 1.

[0038] The pair of second side walls 4 are smoothly connected with the third side wall 5, which can reduce the wear of the target cutting line 6.

[0039] Specifically, the second side wall 4 can be tangent to the third side wall 5.

[0040] In the embodiment, the diameter of the circular arc shape is equal to the diameter of the target cutting line 6, and when the target cutting line 6 is located at the groove bottom of the wire slot 2, the target cutting line 6 is in surface contact with the third side wall 5, which increases the contact area of the target cutting line 6 with the groove bottom of the wire slot 2, is conducive to increasing the supporting force of the groove bottom of the wire slot 2 on the target cutting line 6, increasing the stability of the target cutting line 6 at the groove bottom of the wire slot 2, reducing the risk of the target cutting line 6 shaking at the groove bottom of the wire slot 2, thereby improving the cutting quality of the target cutting line 6 on the silicon rod and reducing the problem of silicon wafer TTV abnormality.

[0041] In the embodiment of the utility model, the pair of first side walls 3 are symmetrical about the reference surface, the pair of second side walls 4 are symmetrical about the reference surface, and the reference surface is perpendicular to the central axis of the main roller body 1.

[0042] It should be noted that each wire slot 2 corresponds to a reference surface, and different wire slots 2 correspond to different reference surfaces. The reference surface corresponding to each wire slot 2 is located at the position indicated by m in the figure. Figure 1

[0043] The wire slot 2 is designed to be symmetrical, which ensures that the load is uniformly distributed during the working process of the main roller, reduces local stress concentration, reduces vibration and wear caused by asymmetric load, and is conducive to improving the stability and service life of the main roller.

[0044] ​The utility model discloses a main roller body 1 includes main roller main part and cladding, and the material quality of main roller main part is metal, and the cladding is covered in the outside of main roller main part, and the cladding is opposite fixed with main roller main part, and wire slot 2 sets up in the cladding.

[0045] The cladding replaces the main roller main part and contacts the target cutting line 6, and when the wire slot 2 is seriously worn, only the cladding can be replaced, and the main roller main part does not need to be replaced, thereby reducing the maintenance cost. Moreover, only the cladding is replaced, the main roller main part is not disassembled, replacement is facilitated, downtime is reduced, and production efficiency is improved.

[0046] In the embodiment, the material of the cladding is polyurethane. The polyurethane material has a high friction coefficient, can enhance the friction between the wire slot 2 and the target cutting line 6, ensure the stability of the target cutting line 6 during movement, and reduce the phenomenon of slipping. Moreover, the polyurethane material has good shock-absorbing performance, can absorb the vibration generated during cutting, reduce the vibration of the main roller main part, protect the target cutting line 6, and improve the cutting accuracy and stability.

[0047] In the embodiment of the utility model, the thickness of the cladding is at least twice the depth of the wire slot 2, wherein the depth of the wire slot 2 is the size of the wire slot 2 along the direction perpendicular to the axis of the main roller main part.

[0048] When the wire slot 2 is seriously worn, the part of the cladding on which the wire slot 2 is processed can be removed, the remaining thickness of the cladding is still greater than the depth of the wire slot 2, and the wire slot 2 can be reprocessed on the remaining part of the cladding.

[0049] It should be noted that the wire slot 2 in the embodiment can be turned by using a special tool when the main roller body 1 rotates at high speed. The shape and size of the special tool are the same as those of the wire slot 2 on the axial section of the main roller body 1.

[0050] On the other hand, the utility model embodiment further provides a cutting device, which comprises the main roller provided in any of the above embodiments. The main roller provided in the above embodiments can effectively increase the difficulty of the target cutting line 6 sliding out of the wire slot 2, effectively reduce the probability of the target cutting line 6 sliding out of the wire slot 2, and solve the problem that the cutting line is easily slid out to the outside of the wire slot 2 in the related art. Therefore, the cutting device provided in the embodiment has the advantages of high yield, high production capacity and low cost. The derivation process of the beneficial effects of the cutting device in the embodiment is similar to that of the main roller, and therefore will not be described here.

[0051] Finally, it should be noted that: the above examples are used to illustrate the technical solutions of the present application, but not limited to; although the present application is described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still be modified to the technical solutions recorded in the foregoing examples, or part of the technical features are replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A main roller, characterized in that, Includes a main roller body (1), the outer surface of which is provided with a groove (2), the groove (2) extends circumferentially along the main roller body (1), the groove (2) has at least a pair of first sidewalls (3) and a pair of second sidewalls (4), the first sidewall (3) is located on the side of the second sidewall (4) away from the central axis of the main roller body (1), and the first sidewall (3) is connected to the second sidewall (4); The pair of first sidewalls (3) are parallel to each other, and the first sidewalls (3) are perpendicular to the central axis of the main roller body (1); The second sidewall (4) is inclined relative to the central axis of the first sidewall (3) and the main roller body (1), and the distance between the pair of second sidewalls (4) gradually increases in the direction away from the central axis of the main roller body (1).

2. The main roller according to claim 1, characterized in that, The groove (2) also has a third sidewall (5), which is located on the side of the second sidewall (4) near the central axis of the main roller body (1); The third sidewall (5) is arc-shaped at the axial section of the main roller body (1), and the pair of second sidewalls (4) are smoothly connected to the third sidewall (5).

3. The main roller according to claim 2, characterized in that, The second sidewall (4) is tangent to the third sidewall (5).

4. The main roller according to claim 2, characterized in that, The diameter of the arc is equal to the diameter of the target cutting line (6).

5. The main roller according to any one of claims 1-4, characterized in that, A pair of first sidewalls (3) are symmetrical about a reference plane, and a pair of second sidewalls (4) are symmetrical about the reference plane, which is perpendicular to the central axis of the main roller body (1).

6. The main roller according to any one of claims 1-4, characterized in that, The main roller body (1) includes a main roller body and a covering layer. The covering layer covers the outside of the main roller body and is fixed relative to the main roller body. The groove (2) is disposed on the covering layer.

7. The main roller according to claim 6, characterized in that, The coating layer is made of polyurethane.

8. The main roller according to claim 6, characterized in that, The thickness of the coating layer is at least twice the depth of the groove (2), and the depth of the groove (2) is the dimension of the groove (2) in the direction perpendicular to the axis of the main roller body.

9. The main roller according to any one of claims 1-4, characterized in that, The groove (2) is provided with multiple grooves, which are distributed at intervals along the axial direction of the main roller body (1).

10. A cutting device, characterized in that, Includes the main roller as described in any one of claims 1 to 9.

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