Grinding wheel of photovoltaic glass edge grinding machine and photovoltaic glass edge grinding machine

Abstract

The invention relates to the technical field of photovoltaic glass processing equipment, in particular to a grinding wheel of a photovoltaic glass edge grinding machine and the photovoltaic glass edge grinding machine, the grinding wheel comprises a first circular plate, a second circular plate and a third circular plate, the side portion of the first circular plate is provided with a communicated first L-shaped groove, and a first included angle not smaller than 90 degrees is formed between the first side wall and the first bottom wall of the first L-shaped groove; a communicating second L-shaped groove is formed in the side portion of the second circular plate, a second included angle not smaller than 90 degrees is formed between the second side wall and the second bottom wall of the second L-shaped groove, and the first circular plate and the second circular plate are in butt joint up and down so that a communicating edge grinding groove can be formed by the first L-shaped groove and the second L-shaped groove; the first circular plate and the second circular plate are fixed together through a locking mechanism. According to the invention, the edge of the photovoltaic glass is synchronously polished and chamfered, and different chamfering angles of the edge of the glass are realized.

Description

Technical Field

[0001] The present disclosure relates to the technical field of photovoltaic glass processing equipment, and in particular to a grinding wheel of a photovoltaic glass edge grinding machine and a photovoltaic glass edge grinding machine. Background Art

[0002] After the photovoltaic glass is processed, its edges need to be polished according to the process requirements, usually by the grinding wheel of an edge grinder.

[0003] For example, the prior art proposes a high-speed glass grinding wheel and a connection structure with a grinding shaft (CN 209615219U), which includes a base and a grinding layer. The base includes an inner ring core and an outer ring grinding body. An inner hole is provided in the middle of the core. An annular groove is provided on the annular surface of the inner hole along the circumferential direction. At least one liquid spray hole is provided inside the annular groove. The liquid spray hole extends out of the surface of the grinding layer along the radial direction of the base. The advantage of the high-speed glass grinding wheel of this utility model is that the cooling liquid can be sprayed from the inside of the grinding wheel directly to act on the grinding surface, which improves the cooling effect during the grinding process and improves the grinding quality.

[0004] Although the above-mentioned prior art realizes the grinding of the edge of photovoltaic glass, according to the requirements of the product, the edge of photovoltaic glass needs not only to be ground but also to be chamfered. In addition, according to the needs of users, the chamfering angle is also different. Therefore, how to realize the simultaneous grinding and chamfering of the edge of photovoltaic glass and how to achieve different chamfering angles are issues that technicians in this field need to consider. Summary of the invention

[0005] A technical problem to be solved by the present disclosure is how to achieve edge grinding of photovoltaic glasses of different thicknesses, and how to simultaneously chamfer the edges while grinding.

[0006] To solve the above technical problems, the embodiment of the present disclosure provides a grinding wheel for a photovoltaic glass edge grinding machine, comprising: a first circular plate, a side portion of the first circular plate is provided with a connected first L-shaped groove, the first L-shaped groove comprises a first side wall and a first bottom wall, the first side wall and the first bottom wall have a first angle of not less than 90 degrees, and the angle of the first angle is variable; a second circular plate, a side portion of the second circular plate is provided with a connected second L-shaped groove, the second L-shaped groove comprises a second side wall and a second bottom wall, the second side wall and the second bottom wall have a second angle of not less than 90 degrees, and the angle of the second angle is variable, the first circular plate and the second circular plate are butted up and down so that the first L-shaped groove and the second L-shaped groove are butted against each other to form a connected grinding groove, and the first side wall forms a grinding groove. The edge groove forms a first chamfered portion on the upper edge of the photovoltaic glass, the second side wall forms a second chamfered portion on the lower edge of the photovoltaic glass formed by the edge grinding groove, the first bottom wall and the second bottom wall are connected together up and down to form a grinding portion of the edge of the photovoltaic glass formed by the edge grinding groove, the size of the grinding portion, the angle between the grinding portion and the first chamfered portion, and the angle between the grinding portion and the second chamfered portion change based on the different specifications of the first circular plate and the second circular plate; a locking mechanism, the locking mechanism includes a bolt, a first through hole is opened on the first circular plate, a second through hole is arranged on the second circular plate, the first circular plate and the second circular plate are butted together to connect the first through hole and the second through hole to form a through hole, and the bolt passes through the through hole to fix the first circular plate and the second circular plate together.

[0007] In some embodiments, a polishing layer is disposed on the first bottom wall, the first side wall, the second bottom wall, and the second side wall.

[0008] In some embodiments, both the first side wall and the second side wall are provided with liquid spray holes for spraying cooling liquid into the edge grinding groove.

[0009] In some embodiments, the locking mechanism includes at least two.

[0010] In addition, the disclosed embodiment also provides a photovoltaic glass edge grinding machine, characterized in that it includes: a workbench, a moving mechanism, two driving mechanisms, two rotating shafts, and two of the above-mentioned grinding wheels, the moving mechanism is arranged on the workbench to drive the photovoltaic glass to move thereon in a lateral direction, the two driving mechanisms are arranged on the workbench and located on opposite sides of the moving mechanism, the driving mechanism includes a longitudinal drive and a rotational drive, the longitudinal drive is arranged on the workbench, and its driving end is connected to the rotational drive to drive the rotational drive to move in the longitudinal direction, the driving ends of the rotational drives of the two driving mechanisms are respectively connected to the bottom of the two rotating shafts to drive the rotating shafts to rotate, and the top ends of the two rotating shafts are respectively connected to the second circular plates of the two grinding wheels.

[0011] In some embodiments, the longitudinal actuator comprises a pneumatic cylinder.

[0012] In some embodiments, the rotary drive comprises a rotary motor.

[0013] In some embodiments, an elastic material is laid on the moving mechanism.

[0014] In some embodiments, the photovoltaic glass edge grinding machine further includes a suction mechanism for sucking up the photovoltaic glass to adjust the direction of the photovoltaic glass on the moving mechanism.

[0015] In some embodiments, the photovoltaic glass edge grinding machine further includes a coolant tank, which is connected to the spray hole of the grinding wheel to provide coolant to the spray hole.

[0016] According to the above technical scheme, the present disclosure provides a grinding wheel for a photovoltaic glass edge grinding machine and a photovoltaic glass edge grinding machine, wherein the grinding wheel realizes synchronous grinding and chamfering of the edge of the photovoltaic glass through a first chamfering part, a second chamfering part and a grinding part; a grinding wheel is formed by connecting a first circular plate with different first angle angles and a second circular plate with different second angle angles, thereby realizing different chamfering angles of the glass edge; the wear resistance, hardness and cutting performance of the first chamfering part, the second chamfering part and the grinding part are improved through the grinding layer; cooling liquid is sprayed into the grinding groove through the spray hole to cool the grinding groove, so as to avoid the problem of damage to the grinding wheel and the glass due to friction heat generated between the grinding groove and the edge of the photovoltaic glass during the grinding and chamfering process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 is a front view of a grinding wheel according to an embodiment of the present disclosure; Figure 2 is a cross-sectional view of a first circular plate and a second circular plate butted against each other in one embodiment of the present disclosure; Figure 3 is a cross-sectional view of a first circular plate according to an embodiment of the present disclosure; Figure 4 is a cross-sectional view of a second circular plate according to an embodiment of the present disclosure; Figure 5 is a front view of a photovoltaic glass edge grinding machine according to an embodiment of the present disclosure; Figure 6 It is a schematic diagram of the geometric relationship between the edge chamfer of the photovoltaic glass and the first angle and the second angle according to an embodiment of the present disclosure.

[0019] Description of reference numerals: 1. First circular plate; 2. First L-shaped groove; 3. First side wall; 4. First bottom wall; 5. Second circular plate; 6. Second L-shaped groove; 7. Second side wall; 8. Second bottom wall; 9. Grinding groove; 10. First through hole; 11. Second through hole; 12. Through hole; 13. Grinding layer; 14. Workbench; 15. Moving mechanism; 16. Rotating shaft; 17. Longitudinal drive; 18. Rotating drive; 19. Threaded barrel; 20. Bolt; 21. Photovoltaic glass. DETAILED DESCRIPTION

[0020] The following is a further detailed description of the embodiments of the present disclosure in conjunction with the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to exemplarily illustrate the principles of the present disclosure, but cannot be used to limit the scope of the present disclosure. The present disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

[0021] The present disclosure provides these embodiments to make the present disclosure thorough and complete, and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary, and not as limiting.

[0022] It should be noted that, in the description of the present disclosure, unless otherwise specified, the meaning of "multiple" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0023] In addition, the words "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" does not mean vertical in the strict sense, but is within the tolerance range. "Parallel" does not mean parallel in the strict sense, but is within the tolerance range. "Include" or "comprising" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements.

[0024] It should also be noted that in the description of the present disclosure, 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 directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0025] All terms used in the present disclosure have the same meanings as those understood by those of ordinary skill in the art to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, for example, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined as such herein.

[0026] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0027] As mentioned in the above background technology, after the photovoltaic glass is processed, its edge will not be polished according to the process requirements, and the edge is usually polished by the grinding wheel of the edge grinder. Although the grinding of the edge of the photovoltaic glass is achieved through the existing technology, according to the requirements of the product, it is not only necessary to grind the edge of the photovoltaic glass, but also to chamfer it. In addition, according to the needs of the user, the angle of the chamfer is also different. For this reason, how to achieve synchronous grinding and chamfering of the edge of the photovoltaic glass, and how to achieve different chamfering angles, are issues that technical personnel in this field need to consider. Based on the above, the inventor of the present application provides a grinding wheel of a photovoltaic glass edge grinder and a photovoltaic glass edge grinder in one or more embodiments, and the grinding wheel achieves synchronous grinding and chamfering of the edge of the photovoltaic glass through a first chamfering part, a second chamfering part and a grinding part; by selecting a first circular plate with different first angle angles and a second circular plate with different second angle angles to dock to form a grinding wheel, different chamfering angles of the glass edge are achieved. It is believed that it can solve one or more problems in the prior art.

[0028] In view of the above-mentioned technical problems, the present invention provides a grinding wheel for a photovoltaic glass edge grinding machine, such as Figure 1-Figure 4As shown, it includes: a first circular plate 1, a first L-shaped groove 2 is opened on the side of the first circular plate 1, the first L-shaped groove 2 includes a first side wall 3 and a first bottom wall 4, the first side wall 3 and the first bottom wall 4 have a first angle not less than 90 degrees; a second circular plate 5, a second L-shaped groove 6 is opened on the side of the second circular plate 5, the second L-shaped groove 6 includes a second side wall 7 and a second bottom wall 8, the second side wall 7 and the second bottom wall 8 have a second angle not less than 90 degrees, the first circular plate 1 and the second circular plate 5 are butted up and down so that the first L-shaped groove 2 and the second L-shaped groove 6 are butted against each other to form a connected grinding groove 9, the first side wall 3 forms a first chamfered portion of the grinding groove 9 on the upper edge of the photovoltaic glass 21, and the second side wall 7 forms a grinding groove The edge groove 9 is connected to the second chamfered portion at the lower part of the edge of the photovoltaic glass 21, and the first bottom wall 4 and the second bottom wall 8 are connected together up and down to form a grinding portion of the edge of the photovoltaic glass 21 formed by the edge grinding groove 9. The size of the grinding portion, the angle between the grinding portion and the first chamfered portion, and the angle between the grinding portion and the second chamfered portion are changed based on the different specifications of the first circular plate and the second circular plate; the locking mechanism, the locking mechanism includes a bolt 20, a first through hole 10 is opened on the first circular plate 1, and a second through hole 11 is set on the second circular plate 5. The first circular plate 1 and the second circular plate 5 are connected to each other so that the first through hole 10 and the second through hole 11 are connected to form a through hole 12, and the bolt 20 passes through the through hole 12 to fix the first circular plate 1 and the second circular plate 5 together.

[0029] Specifically, a plurality of first circular plates 1 can be manufactured, and the first angle between the first side wall 3 and the first bottom wall 4 on each first circular plate 1 is different. A plurality of second circular plates 5 can also be manufactured, and the second angle between the second side wall 7 and the second bottom wall 8 on each second circular plate 5 is also different. Grinding wheels of different specifications can be formed by connecting first circular plates 1 with different first angles and second circular plates 5 with different second angles, thereby achieving different chamfering angles of glass edges and adapting to glasses of different sizes. For example, Figure 6As shown, the upper edge of the photovoltaic glass 21 needs to be chamfered at an angle of ∠A, and the lower edge of the photovoltaic glass 21 needs to be chamfered at an angle of ∠B. Then, a first circular plate with a first angle of ∠C=90°-∠A and a second circular plate 5 with a second angle of ∠D=90°-∠B are selected, and the first circular plate and the second circular plate 5 are butted up and down, and then fixed together with bolts 20 to form a grinding wheel. The grinding wheel moves in the longitudinal direction so that the edge of the photovoltaic glass 21 extends into the grinding groove 9, and the first chamfered portion abuts against The upper part of the edge of the photovoltaic glass 21, the second chamfered part abuts against the lower part of the edge of the photovoltaic glass 21, the grinding wheel starts to rotate, the first chamfered part starts to chamfer the upper part of the edge of the photovoltaic glass 21, and the second chamfered part starts to chamfer the lower part of the edge of the photovoltaic glass 21, and the grinding wheel continues to move along the longitudinal direction to make the grinding part of the edge grinding groove 9 abut against the edge of the photovoltaic glass 21, the grinding wheel stops moving along the longitudinal direction, the photovoltaic glass 21 moves along the transverse direction, and the edge grinding groove 9 realizes the grinding and chamfering of an edge of the photovoltaic glass 21.

[0030] Compared with the prior art, the grinding wheel of a photovoltaic glass edge grinding machine of the present application realizes simultaneous grinding and chamfering of the edge of the photovoltaic glass 21 through a first chamfering portion, a second chamfering portion and a grinding portion; by selecting a first circular plate 1 with different first angle angles and a second circular plate 5 with different second angle angles to connect and form a grinding wheel, different chamfering angles of the glass edge are achieved.

[0031] In some embodiments, the first L-shaped groove 2 and the second L-shaped groove 6 are both connected grooves, that is, they are formed around the central axes of the first circular plate 1 and the second circular plate 5 and around the first circular plate 1 and the second circular plate 5 respectively.

[0032] In some embodiments, Figure 1 As shown, a grinding layer 13 is provided on the first bottom wall 4, the first side wall 3, the second bottom wall 8 and the second side wall 7. The grinding layer 13 improves the wear resistance, hardness and cutting performance of the first chamfered portion, the second chamfered portion and the grinding portion to ensure the grinding and chamfering quality of the glass edge. Specifically, the grinding portion can be a diamond layer, which can be formed by electroplating, sintering or brazing. The diamond layer is preferably a hexahedral crystal structure diamond particle to improve the hardness value, wear resistance and cutting performance of the diamond layer. The thickness of the diamond layer is preferably 3mm to 15mm.

[0033] In some embodiments, a liquid spray hole (not shown in the figure) is provided on both the first side wall 3 and the second side wall 7 to spray coolant into the edge grinding groove 9. The coolant is sprayed into the edge grinding groove 9 through the liquid spray hole to cool the edge grinding groove 9, thereby avoiding the problem of friction heat generated between the edge grinding groove 9 and the edge of the photovoltaic glass 21 during grinding and chamfering, thereby damaging the grinding wheel and the glass.

[0034] In some embodiments, Figure 1 As shown, the locking mechanism comprises at least two. The first circular plate and the second circular plate 5 can be securely connected together by the two locking mechanisms.

[0035] In addition, the present invention also provides a photovoltaic glass edge grinding machine, such as Figure 5 As shown, it includes: a workbench 14, a moving mechanism 15, two driving mechanisms, two rotating shafts 16, and the two grinding wheels mentioned above. The moving mechanism 15 is arranged on the workbench 14 to drive the photovoltaic glass 21 to move thereon in a lateral direction. The two driving mechanisms are arranged on the workbench 14 and are located on opposite sides of the moving mechanism 15. The driving mechanisms include a longitudinal driver 17 and a rotation driver 18. The longitudinal driver 17 is arranged on the workbench 14, and its driving end is connected to the rotation driver 18 to drive the rotation driver to move in the longitudinal direction. The driving ends of the rotation drivers 18 of the two driving mechanisms are respectively connected to the bottom of the two rotating shafts 16 to drive the rotating shafts 16 to rotate, and the top ends of the two rotating shafts 16 are respectively connected to the second circular plates 5 of the two grinding wheels.

[0036] Specifically, the photovoltaic glass 21 is first placed on the moving mechanism 15, and the moving mechanism 15 can be a conveyor belt or a roller group. The two longitudinal drivers 17 drive the rotating driver 18 to move toward each other in the longitudinal direction, so that the two opposite edges of the photovoltaic glass 21 are inserted into the grinding grooves 9 of the two grinding wheels. The first chamfered parts of the two grinding grooves 9 are respectively abutted against the upper parts of the two opposite edges of the photovoltaic glass 21, and the second chamfered parts of the two grinding grooves 9 are respectively abutted against the lower parts of the two opposite edges of the photovoltaic glass 21. The two grinding wheels start to rotate at the same time under the drive of the two rotating drivers 18, and the first chamfered parts are respectively abutted against the photovoltaic glass 21. The upper part of the edge of the glass 21 starts to be chamfered, and the second chamfering part starts to chamfer the lower part of the edge of the photovoltaic glass 21. At the same time, the two longitudinal drivers 17 respectively drive the two rotating drivers 18 to move toward each other in the longitudinal direction so that the grinding parts of the two grinding grooves 9 are respectively against the two opposite edges of the photovoltaic glass 21. The two longitudinal drivers 17 stop working, and the two grinding wheels stop moving in the longitudinal direction. The moving mechanism 15 is started to drive the photovoltaic glass 21 to move in the transverse direction. The two grinding wheels rotate under the drive of the rotator, and the grinding grooves 9 thereon realize the grinding and chamfering of the two opposite edges of the photovoltaic glass 21. The threaded barrel 19 can be welded on the bottom surface of the second circular plate 5, and a screw is arranged at the top of the rotating shaft 16. The grinding wheel and the rotating shaft 16 can be connected together through the threaded barrel 19 and the screw, which also facilitates the replacement of different grinding wheels.

[0037] In some embodiments, the longitudinal driver 17 comprises a pneumatic cylinder, and the driving function of the longitudinal driver 17 is realized by the pneumatic cylinder.

[0038] In some embodiments, the rotary drive 18 includes a rotary motor. The driving function of the rotary drive 18 is realized by the rotary motor.

[0039] In some embodiments, an elastic material (not shown in the figure) is laid on the moving mechanism 15. The elastic material prevents the moving mechanism 15 from scratching the photovoltaic glass 21.

[0040] In some embodiments, the photovoltaic glass edge grinding machine further includes an adsorption mechanism (not shown in the figure) for sucking up the photovoltaic glass 21 to adjust the direction of the photovoltaic glass 21 on the moving mechanism 15. After the grinding and chamfering of the two opposite edges of the photovoltaic glass 21 are completed, the photovoltaic glass 21 can be sucked up from the moving mechanism 15 by the adsorption mechanism, and the direction of the photovoltaic glass 21 can be adjusted before placing it on the moving mechanism 15, and then the grinding and chamfering of the two opposite edges of the photovoltaic glass 21 in another direction can be completed.

[0041] In some embodiments, the photovoltaic glass edge grinding machine further includes a cooling liquid tank (not shown in the figure), which is connected to the spray hole of the grinding wheel to provide cooling liquid to the spray hole. The cooling liquid is provided to the spray hole through the cooling liquid tank.

[0042] In summary, compared with the prior art, the present invention provides a grinding wheel for a photovoltaic glass edge grinding machine and a photovoltaic glass edge grinding machine, wherein the grinding wheel realizes synchronous grinding and chamfering of the edge of the photovoltaic glass 21 through a first chamfering portion, a second chamfering portion and a grinding portion; a grinding wheel is formed by connecting a first circular plate 1 with different first angles and a second circular plate 5 with different second angles, thereby realizing different chamfering angles of the glass edge; the wear resistance, hardness and cutting properties of the first chamfering portion, the second chamfering portion and the grinding portion are improved through a grinding layer 13; cooling liquid is sprayed into the edge grinding groove 9 through a spray hole to cool the edge grinding groove 9, so as to avoid the problem of damage to the grinding wheel and the glass due to frictional heat generated between the edge grinding groove 9 and the edge of the photovoltaic glass 21 during the grinding and chamfering process.

[0043] So far, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0044] Although some specific embodiments of the present disclosure have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present disclosure. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict.

Claims

1. A grinding wheel for a photovoltaic glass edge grinding machine, characterized in that: include: A first circular plate (1), wherein a first L-shaped groove (2) is formed on a side of the first circular plate (1), the first L-shaped groove (2) comprising a first side wall (3) and a first bottom wall (4), the first side wall (3) and the first bottom wall (4) having a first angle of not less than 90 degrees; A second circular plate (5), a second L-shaped groove (6) is provided on the side of the second circular plate (5), the second L-shaped groove (6) comprises a second side wall (7) and a second bottom wall (8), the second side wall (7) and the second bottom wall (8) have a second angle of not less than 90 degrees, the first circular plate (1) and the second circular plate (5) are butted up and down so that the first L-shaped groove (2) and the second L-shaped groove (6) are butted against each other to form a connected edge grinding groove (9), the first side wall (3) forms the edge grinding groove (9) against the photovoltaic glass (21 ), the second side wall (7) forms a second chamfered portion of the edge of the photovoltaic glass (21) formed by the grinding groove (9), the first bottom wall (4) and the second bottom wall (8) are connected together up and down to form a grinding portion of the edge of the photovoltaic glass (21) formed by the grinding groove (9), and the size of the grinding portion, the angle between the grinding portion and the first chamfered portion, and the angle between the grinding portion and the second chamfered portion are changed based on the different specifications of the first circular plate (1) and the second circular plate (5); and A locking mechanism, the locking mechanism comprising a bolt (20), the first circular plate (1) being provided with a first through hole (10), the second circular plate (5) being provided with a second through hole (11), the first circular plate (1) and the second circular plate (5) being butted against each other so that the first through hole (10) and the second through hole (11) are connected to form a through hole (12), and the bolt (20) passes through the through hole (12) to fix the first circular plate (1) and the second circular plate (5) together.

2. The grinding wheel of the photovoltaic glass edge grinding machine according to claim 1, characterized in that: A polishing layer (13) is provided on the first bottom wall (4), the first side wall (3), the second bottom wall (8) and the second side wall (7).

3. The grinding wheel of the photovoltaic glass edge grinding machine according to claim 1, characterized in that: The first side wall (3) and the second side wall (7) are both provided with liquid spray holes for spraying cooling liquid into the edge grinding groove (9).

4. The grinding wheel of the photovoltaic glass edge grinding machine according to claim 1, characterized in that: The locking mechanism comprises at least two.

5. A photovoltaic glass edge grinding machine, characterized in that: The invention comprises: a workbench (14), a moving mechanism (15), two driving mechanisms, two rotating shafts (16), and two grinding wheels according to any one of claims 1 to 4, wherein the moving mechanism (15) is arranged on the workbench (14) to drive the photovoltaic glass (21) to move thereon in a lateral direction, the two driving mechanisms are arranged on the workbench (14) and are located on opposite sides of the moving mechanism (15), the driving mechanism comprises a longitudinal driver (17) and a rotation driver (18), the longitudinal driver (17) is arranged on the workbench (14), and its driving end is connected to the rotation driver (18) to drive the rotation driver to move in the longitudinal direction, the driving ends of the rotation drivers (18) of the two driving mechanisms are respectively connected to the bottom of the two rotating shafts (16) to drive the rotating shafts (16) to rotate, and the top ends of the two rotating shafts (16) are respectively connected to the second circular plates (5) of the two grinding wheels.

6. The photovoltaic glass edge grinding machine according to claim 5, characterized in that: The longitudinal drive (17) comprises a cylinder.

7. The photovoltaic glass edge grinding machine according to claim 5, characterized in that: The rotary drive (18) comprises a rotary motor.

8. The photovoltaic glass edge grinding machine according to claim 5, characterized in that: The moving mechanism (15) is paved with elastic material.

9. The photovoltaic glass edge grinding machine according to claim 5, characterized in that: The photovoltaic glass edge grinding machine also includes a suction mechanism for sucking up the photovoltaic glass (21) to adjust the direction of the photovoltaic glass (21) on the moving mechanism (15).

10. The photovoltaic glass edge grinding machine according to claim 5, characterized in that: The photovoltaic glass edge grinding machine also includes a coolant tank, which is connected to the spray hole of the grinding wheel to provide coolant for the spray hole.

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