Grinding wheel, grinding wheel assembly and grinding equipment for machining solar silicon rod

Abstract

The utility model provides a grinding wheel for processing a solar silicon rod, a grinding wheel assembly and grinding equipment, the grinding wheel comprises a grinding wheel body, a first surface is recessed inwards to form an annular first water tank, and the first water tank is suitable for being connected with an external water source; the grinding material layer is arranged on the second face, opposite to the first face, of the grinding wheel body, drainage holes are formed in the grinding material layer and communicated with the first water tank, and the grinding material layer and the grinding wheel body are of an integrated structure or are arranged in a layered mode. The grinding wheel assembly comprises a grinding wheel. One surface of the supporting piece is sunken inwards to form a second water tank matched with the first water tank; a water inlet communicated with the second water tank is formed in the other surface of the supporting piece and is suitable for being connected with a water source; the supporting piece is in sliding sealing fit with the first friction layer, so that the first water tank and the second water tank form a sealed water storage tank. And external spraying cooling water can be improved into direct cooling water supply in an internal grinding area, so that more accurate and more uniform cooling and lubrication are realized, and the grinding efficiency and stability are improved.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic material cutting, and in particular to a grinding wheel, grinding wheel assembly and grinding equipment for processing solar silicon rods. Background Technology

[0002] In the precision machining of monocrystalline silicon materials, the grinding performance of the grinding wheel directly determines the machining efficiency and surface quality.

[0003] Existing grinding machines typically employ a traditional external cooling water spraying method for grinding wheels. In this method, cooling water is sprayed directly onto the grinding area through external nozzles to remove heat generated during grinding and wash away grinding debris, keeping the grinding wheel clean and sharp. However, this external spraying method often suffers from uneven cooling water distribution and difficulty in precisely controlling the cooling effect, which may affect grinding efficiency and machining quality. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a grinding wheel, grinding wheel assembly, and grinding equipment for processing solar silicon rods, which improves the precision and efficiency of grinding processes and enhances the surface quality of workpieces.

[0005] According to one aspect of the inventive concept of this utility model, a grinding wheel for processing solar silicon rods is provided, comprising:

[0006] The grinding wheel body has a first surface that is recessed inward to form a first annular water groove, which is suitable for connecting to an external water source.

[0007] An abrasive layer is disposed on a second surface of the grinding wheel body opposite to the first surface. The abrasive layer has drainage holes that are connected to the first water tank.

[0008] The abrasive layer and the grinding wheel body are either an integral structure or are arranged in layers.

[0009] According to some embodiments of the present invention, the abrasive layer is annular, and the drainage hole is located adjacent to the inner ring of the abrasive layer.

[0010] According to some embodiments of the present invention, there are multiple drainage holes, which are arranged in a ring-shaped interval on the abrasive layer.

[0011] According to some embodiments of the present invention, the grinding wheel further includes:

[0012] A drainage groove is formed on the abrasive layer along the radial direction of the second surface, wherein the drainage hole is located within the drainage groove.

[0013] According to some embodiments of the present invention, the grinding wheel further includes:

[0014] A first friction layer is disposed on the first surface of the grinding wheel body. The first friction layer is configured to be in sliding and sealed connection with an external water source. The static friction coefficient of the first friction layer is in the range of 0.05 to 0.20, and the dynamic friction coefficient is in the range of 0.02 to 0.15.

[0015] According to another aspect of the inventive concept of this utility model, a grinding wheel assembly for processing solar silicon rods is provided, comprising:

[0016] The grinding wheel for processing solar silicon rods as described in the foregoing embodiments;

[0017] The support member has an inwardly recessed one side forming a second water tank that matches the first water tank, and a water inlet is provided on the other side, which is connected to the second water tank and is suitable for connecting a water source.

[0018] The support member is slidably sealed to the first friction layer, so that the first water tank and the second water tank form a sealed water storage tank, and the other side is adjacent to or opposite to the side where the second water tank is located.

[0019] According to some embodiments of the present invention, the grinding wheel assembly for processing solar silicon rods further includes:

[0020] The second friction layer is disposed on the side of the support member opposite to the grinding wheel body. The static friction coefficient of the second friction layer is in the range of 0.05 to 0.20, and the dynamic friction coefficient is in the range of 0.02 to 0.15.

[0021] According to some embodiments of the present invention, the grinding wheel assembly for processing solar silicon rods further includes:

[0022] An elastic element is connected at one end to a fixed structure and at the other end to the support member. The elastic element is configured to abut against the support member so that the support member is in contact with the first friction layer.

[0023] According to some embodiments of this utility model, the elastic element is a compression spring, an electric cylinder, a pneumatic cylinder, or a hydraulic cylinder.

[0024] According to another aspect of the inventive concept of this utility model, a grinding device for processing solar silicon rods is provided, comprising:

[0025] The grinding wheel assembly for processing solar silicon rods as described in the foregoing embodiments;

[0026] The driving device includes an output shaft that passes through the support and is connected to the grinding wheel body in a driving connection.

[0027] According to embodiments of the present invention, a grinding wheel, grinding wheel assembly, and grinding equipment for processing solar silicon rods utilize a water tank on the grinding wheel body and drainage holes connected to the water tank on the abrasive layer. This, combined with a sliding seal between the first friction layer and an external water source, forms a relatively closed water storage space for water supply. This improves upon traditional externally sprayed cooling water by directly supplying cooling water to the internal grinding area, achieving more precise and uniform cooling and lubrication. The cooling water can more effectively remove heat generated during grinding, reducing grinding temperature and minimizing the risk of thermal damage. Simultaneously, the uniform distribution of cooling water helps maintain the cleanliness and sharpness of the grinding wheel, improving grinding efficiency and processing stability. Attached Figure Description

[0028] Figure 1 This is a three-dimensional structural schematic diagram of a grinding wheel for processing solar silicon rods according to an exemplary embodiment of the present invention.

[0029] Figure 2 This is a top view of a grinding wheel for processing solar silicon rods according to an exemplary embodiment of the present invention.

[0030] Figure 3 This is a bottom view of a grinding wheel for processing solar silicon rods according to an exemplary embodiment of the present invention.

[0031] Figure 4 This is a front view of a grinding wheel for processing solar silicon rods according to an exemplary embodiment of the present invention.

[0032] Figure 5 This is a schematic diagram of the structure of a grinding device for processing solar silicon rods according to an exemplary embodiment of the present invention.

[0033] The meanings of the reference numerals in the above figures are as follows:

[0034] 1. Grinding wheel body; 2. First water tank; 3. Abrasive layer; 4. Drain hole; 5. Drain groove; 6. First friction layer; 7. Support component; 8. Second water tank; 9. Water inlet; 10. Second friction layer; 11. Compression spring; 12. Drive device; 13. Output shaft; 14. Screw hole; 15. Fixing component; 16. Water pipe. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0036] However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present invention. In the following detailed description, numerous specific details are set forth to provide a comprehensive understanding of the embodiments of the present invention for ease of explanation. However, it will be apparent that one or more embodiments may be practiced without these specific details. Furthermore, descriptions of well-known technologies are omitted in the following description to avoid unnecessarily obscuring the concepts of the present invention.

[0037] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The term "comprising" as used herein indicates the presence of features, steps, or operations, but does not exclude the presence or addition of one or more other features.

[0038] When using expressions such as "at least one of A, B, and C," the expression should generally be interpreted in accordance with the meaning commonly understood by a person skilled in the art (e.g., "a system having at least one of A, B, and C" should include, but is not limited to, systems having A alone, having B alone, having C alone, having A and B, having A and C, having B and C, and / or having A, B, and C, etc.). Similarly, when using expressions such as "at least one of A, B, or C," the expression should generally be interpreted in accordance with the meaning commonly understood by a person skilled in the art (e.g., "a system having at least one of A, B, or C" should include, but is not limited to, systems having A alone, having B alone, having C alone, having A and B, having A and C, having B and C, and / or having A, B, and C, etc.).

[0039] All terms used herein (including technical and scientific terms) have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein are to be interpreted in a manner consistent with the context of this specification, and not in an idealized or overly rigid way.

[0040] In related technologies, traditional external jet cooling water methods often suffer from problems such as uneven cooling water distribution, difficulty in precisely controlling the cooling area, and limited cooling effect. These problems not only affect the stability of the grinding process but may also lead to defects such as thermal damage and uneven grinding marks on the workpiece surface, thereby reducing machining accuracy and surface quality.

[0041] Figure 1 This is a three-dimensional structural schematic diagram of a grinding wheel for processing solar silicon rods according to an exemplary embodiment of the present invention. Figure 2 This is a top view of a grinding wheel for processing solar silicon rods according to an exemplary embodiment of the present invention. Figure 3 This is a bottom view of a grinding wheel for processing solar silicon rods according to an exemplary embodiment of the present invention. Figure 4This is a front view of a grinding wheel for processing solar silicon rods according to an exemplary embodiment of the present invention.

[0042] To solve the above-mentioned technical problems, according to one aspect of the inventive concept of this utility model, such as... Figures 1 to 4 As shown, a grinding wheel for processing solar silicon rods is provided, comprising: a grinding wheel body 1 and an abrasive layer 3. A first surface of the grinding wheel body 1 is recessed inward to form an annular first water groove 2, which is suitable for connecting to an external water source. The abrasive layer 3 is disposed on a second surface of the grinding wheel body 1 opposite to the first surface, and a drainage hole 4 is provided on the abrasive layer 3, which connects to the first water groove 2. The abrasive layer 3 and the grinding wheel body 1 are either an integral structure or layered.

[0043] In this embodiment, a water tank is provided on the grinding wheel body 1, and a drain hole 4 is opened on the abrasive layer 3 to connect to the water tank. This, combined with the sliding seal between the first friction layer 6 and the external water source, forms a relatively closed water storage space, thus supplying water to the drain hole 4. This improves upon the traditional external spray cooling water by directly supplying cooling water to the internal grinding area, achieving more precise and uniform cooling and lubrication. The cooling water can more effectively remove the heat generated during grinding, reducing the grinding temperature and minimizing the risk of thermal damage. Simultaneously, the uniform distribution of cooling water also helps maintain the cleanliness and sharpness of the grinding wheel, improving grinding efficiency and processing stability.

[0044] According to some embodiments of the present invention, the grinding wheel of this application is suitable for grinding solar silicon rods, including monocrystalline silicon rods and polycrystalline silicon rods.

[0045] According to some embodiments of this utility model, the first surface of the grinding wheel body 1 is a flat surface, and the external water source has another flat surface adapted to the grinding wheel body 1. During the grinding operation, the two flat surfaces abut against each other and are under certain pressure. The two flat surfaces rotate, maintaining a certain degree of sealing during the rotation process, that is, preventing the water input into the first water tank 2 from flowing out between the two flat surfaces; or, a small amount of cooling water flowing out or seeping out is allowed within a certain preset range. The small amount of seeping or flowing out cooling water can wet, lubricate, and cool the two flat surfaces, reducing wear between the two flat surfaces and extending their service life.

[0046] According to some embodiments of the present invention, the abrasive layer 3 is annular, and the drainage hole 4 is located adjacent to the inner ring of the abrasive layer 3.

[0047] In this embodiment, the drain hole 4 is positioned adjacent to the inner ring of the abrasive layer 3, allowing the cooling water flowing out / spraying from the drain hole 4 to cover a larger area of ​​the abrasive layer 3, thus improving the cooling effect. Specifically, during the high-speed rotation of the grinding wheel, the cooling water flowing out / spraying from the drain hole 4 moves from the inside to the outside of the grinding area under the action of centrifugal force, thereby wetting the entire abrasive layer 3 and carrying away the heat generated by the grinding operation.

[0048] According to some embodiments of this utility model, there are multiple drainage holes 4, which are arranged in a ring-like pattern on the abrasive layer 3. Optionally, the drainage holes 4 can be arranged in one or more rings to further improve the cooling effect on the grinding wheel.

[0049] According to some embodiments of the present invention, the grinding wheel further includes a drainage groove 5, which is formed on the abrasive layer 3 along the radial direction of the second surface, wherein the drainage hole 4 is located inside the drainage groove 5.

[0050] In this embodiment, the drain hole 4 is formed within the drain groove 5, creating a small temporary water storage space within the drain groove 5. This improves the water discharge efficiency of the drain hole 4 and prevents it from directly contacting the crystal rod, thus preventing grinding debris from clogging the drain hole 4. Furthermore, it more effectively flushes away grinding debris generated during grinding, preventing the accumulation of grinding debris in the grinding area and maintaining the cleanliness and sharpness of the grinding surface.

[0051] According to some embodiments of this utility model, multiple drainage holes 4 are provided in each drainage groove 5, which improves the water discharge efficiency of the drainage holes 4, enhances stability, and prevents the drainage holes 4 from being blocked by grinding debris, thus preventing them from malfunctioning. With multiple drainage holes 4, even if individual drainage holes 4 malfunction, the others can still provide cooling water to the drainage groove 5, improving the stability and service life of the grinding wheel.

[0052] According to some embodiments of the present invention, there is a certain angle between the extending direction of the drainage groove 5 and the radial direction of the abrasive layer 3, the angle being 0 to 30°, preferably 10° to 32°.

[0053] In this embodiment, by tilting the drainage channel 5, the length of the drainage channel can be extended, the contact area of ​​the cooling water can be increased, and the cooling effect can be improved.

[0054] According to some embodiments of this utility model, the grinding wheel further includes a first friction layer 6, which is disposed on the first surface of the grinding wheel body 1. The first friction layer 6 is configured to slide and seal with an external water source. The static friction coefficient of the first friction layer 6 ranges from 0.05 to 0.20, and the dynamic friction coefficient ranges from 0.02 to 0.15. Preferably, the static friction coefficient of the first friction layer 6 ranges from 0.05 to 0.1, and the dynamic friction coefficient ranges from 0.02 to 0.1.

[0055] In this embodiment, the first friction layer 6 is made of a material with a low coefficient of friction and high wear resistance. The coefficient of friction of the first friction layer 6 cannot be too low, as this would make it difficult to guarantee the sealing contact pressure and cause cooling water leakage; however, the coefficient of friction of the first friction layer 6 cannot be too high either, as this would lead to severe heat generation, increased wear, and increased energy consumption. Based on this, some of the available materials and related parameters for the first friction layer 6 in this application are shown in Table 1.

[0056] Table 1

[0057]

[0058] The surface roughness of the first friction layer 6 ranges from Ra 0.2 to 1.6 μm. Excessively smooth surface roughness (Ra < 0.1 μm) may weaken the formation of the lubricating film. The sealing pressure of the surface of the first friction layer 6 is 0.1 to 0.5 MPa, and it is necessary to ensure that the elastic modulus of the friction layers is matched (e.g., PTFE ≈ 0.5 GPa, PEEK ≈ 3 GPa).

[0059] Figure 5 This is a schematic diagram of the structure of a grinding device for processing solar silicon rods according to an exemplary embodiment of the present invention.

[0060] According to another aspect of the inventive concept of this utility model, a grinding wheel assembly for processing solar silicon rods is provided, such as... Figure 5 As shown, the device includes: a grinding wheel for processing solar silicon rods as described in the previous embodiment and a support member 7. One side of the support member 7 is recessed inward to form a second water tank 8 that matches the first water tank 2; a water inlet 9 is opened on the other side of the support member 7, and the water inlet 9 communicates with the second water tank 8. The water inlet 9 is suitable for connecting a water source (e.g., a water pipe 16); wherein the support member 7 and the first friction layer 6 are slidably sealed together, so that the first water tank 2 and the second water tank 8 form a sealed water storage tank. Optionally, the support member 7 includes two opposing working surfaces, one working surface is provided with the second water tank 8, and the other working surface is provided with the water inlet 9. Further optionally, the water inlet 9 can also be provided on the side of the support member 7.

[0061] In this embodiment, the grinding wheel assembly includes the aforementioned grinding wheel body 1 and support member 7. A water storage tank is formed by the slidable seal between the support member 7 and the grinding wheel body 1, and a water source is connected through the support member 7, which can improve the applicability of the device.

[0062] According to some embodiments of the present invention, the grinding wheel assembly for processing solar silicon rods further includes a second friction layer 10. The second friction layer 10 is disposed on the side of the support 7 opposite to the grinding wheel body 1. The static friction coefficient of the second friction layer 10 is in the range of 0.05 to 0.20, and the dynamic friction coefficient is in the range of 0.02 to 0.15.

[0063] In this embodiment, the structure, function, role, and material selection of the second friction layer 10 are similar to those of the first friction layer 6, and will not be described in detail here. It should be noted that the material of the second friction layer 10 can be the same as or different from that of the first friction layer 6; preferably, different materials are used, as using the same material may lead to adhesive wear, for example, steel against steel. A preferred choice is that the first friction layer 6 is PTFE and the second friction layer 10 is stainless steel, with μ≈0.07 and a lifespan >107 revolutions. Furthermore, other materials can be selected according to actual needs.

[0064] According to some embodiments of the present invention, the grinding wheel assembly for processing solar silicon rods further includes an elastic element, one end of which is connected to a fixed structure and the other end of which is connected to a support 7. The elastic element is configured to abut against the support 7 so that the support 7 is attached to the first friction layer 6.

[0065] According to some embodiments of this utility model, the elastic element is a compression spring 11, an electric cylinder, a pneumatic cylinder, or a hydraulic cylinder.

[0066] In this embodiment, the support member 7 and the second friction layer 10 are pressed against the first friction layer 6 of the grinding wheel body 1 by an elastic element (e.g., a compression spring 11) and a certain sealing pressure is maintained. One end of the elastic element is connected to the support member 7, and the other end is connected to the fixing structure. For example, the fixing member 15 can be a fixing support, base, or other structure.

[0067] According to another aspect of the inventive concept of this utility model, a grinding device for processing solar silicon rods is provided, such as... Figure 5 As shown, it includes: a grinding wheel assembly for processing solar silicon rods as described in the foregoing embodiment and a drive device 12. The drive device 12 includes an output shaft 13, which passes through a support member 7 and is drively connected to the grinding wheel body 1.

[0068] According to some embodiments of the present invention, the drive device 12 can be a motor, or other rotating mechanism or transmission mechanism. The support member 7 is provided with a through hole, and the output shaft 13 passes through the through hole and is connected to the grinding wheel body 1, for example, through the screw hole 14 on the grinding wheel body 1. The output shaft 13 does not contact the through hole on the support member 7.

[0069] According to some embodiments of this utility model, a bearing can also be provided between the output shaft 13 and the through hole on the support member 7. The outer ring of the bearing is connected to the support member 7, and the inner ring is connected to the output shaft 13. The bearing can improve the stability of the support member 7 and increase the overall service life of the device.

[0070] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings. It should be noted that implementations not illustrated or described in the drawings or the main text of the specification are forms known to those skilled in the art and have not been described in detail. Furthermore, the definitions of the components described above are not limited to the various specific structures, shapes, or methods mentioned in the embodiments, and those skilled in the art can easily modify or substitute them.

[0071] It should also be noted that, in the specific embodiments of this utility model, unless otherwise stated otherwise, the numerical parameters in this specification and the appended claims are approximate values ​​and can be changed according to the desired characteristics obtained from the content of this utility model. Specifically, all numbers used in the specification and claims to indicate dimensions, range conditions, etc., of the composition should be understood to be modified by the term "about" in all cases. Generally, this means that there may be variations of ±10% in some embodiments, ±5% in some embodiments, ±1% in some embodiments, and ±0.5% in some embodiments.

[0072] Those skilled in the art will understand that the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways, even if such combinations or combinations are not explicitly described in this utility model. In particular, the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways without departing from the spirit and teachings of this utility model. All such combinations and / or combinations fall within the scope of this utility model.

[0073] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A grinding wheel for processing solar silicon rods, characterized in that, include: The grinding wheel body has a first surface that is recessed inward to form a first annular water groove, which is suitable for connecting to an external water source. An abrasive layer is disposed on a second surface of the grinding wheel body opposite to the first surface. The abrasive layer has drainage holes that are connected to the first water tank. The abrasive layer and the grinding wheel body are either an integral structure or are arranged in layers.

2. The grinding wheel for processing solar silicon rods according to claim 1, characterized in that, The abrasive layer is annular, and the drainage hole is located adjacent to the inner ring of the abrasive layer.

3. The grinding wheel for processing solar silicon rods according to claim 1, characterized in that, The number of drainage holes is multiple, and the multiple drainage holes are arranged in a ring-shaped interval on the abrasive layer.

4. The grinding wheel for processing solar silicon rods according to claim 1, characterized in that, The grinding wheel also includes: A drainage groove is formed on the abrasive layer along the radial direction of the second surface, wherein the drainage hole is located within the drainage groove.

5. The grinding wheel for processing solar silicon rods according to claim 1, characterized in that, The grinding wheel also includes: A first friction layer is disposed on the first surface of the grinding wheel body. The first friction layer is configured to be in sliding and sealed connection with an external water source. The static friction coefficient of the first friction layer is in the range of 0.05 to 0.20, and the dynamic friction coefficient is in the range of 0.02 to 0.

15.

6. A grinding wheel assembly for processing solar silicon rods, characterized in that, include: A grinding wheel for processing solar silicon rods as described in any one of claims 1 to 5; The support member has an inwardly recessed one side forming a second water tank that matches the first water tank, and a water inlet is provided on the other side, which is connected to the second water tank and is suitable for connecting a water source. The support member is slidably sealed to the first friction layer, so that the first water tank and the second water tank form a sealed water storage tank, and the other side is adjacent to or opposite to the side where the second water tank is located.

7. The grinding wheel assembly for processing solar silicon rods according to claim 6, characterized in that, Also includes: The second friction layer is disposed on the side of the support member opposite to the grinding wheel body. The static friction coefficient of the second friction layer is in the range of 0.05 to 0.20, and the dynamic friction coefficient is in the range of 0.02 to 0.

15.

8. The grinding wheel assembly for processing solar silicon rods according to claim 6, characterized in that, Also includes: An elastic element is connected at one end to a fixed structure and at the other end to the support member. The elastic element is configured to abut against the support member so that the support member is in contact with the first friction layer.

9. The grinding wheel assembly for processing solar silicon rods according to claim 8, characterized in that, The elastic element is a compression spring, an electric cylinder, a pneumatic cylinder, or a hydraulic cylinder.

10. A grinding device for processing solar silicon rods, characterized in that, include: A grinding wheel assembly for processing solar silicon rods as described in any one of claims 6 to 9; The driving device includes an output shaft that passes through the support and is connected to the grinding wheel body in a driving connection.

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