Grinding tool caliper for guide wheel measurement
By designing a mold caliper that includes a caliper body and a composite reinforcing sheet, the problem of insufficient measurement accuracy of existing mold calipers was solved, achieving higher measurement accuracy and lower misalignment value, thereby improving the quality and yield of silicon wafers.
Patent Information
- Application Number
- CN202423111061.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-17
AI Technical Summary
Existing mold calipers used for guide wheel measurement suffer from wire breakage during use, resulting in insufficient measurement accuracy, large errors, and affecting the quality and yield of silicon wafers.
A molded caliper comprising a caliper body, a composite reinforcing sheet, and graduation lines has been designed. The outer side of the caliper body is integrally formed with a caliper edge, and the interior is equipped with positioning components and anti-slip pads. The composite reinforcing sheet is composed of multiple layers of adhesive sheets and wear-resistant sheets, and is integrally formed by compression molding to ensure measurement accuracy.
It significantly improves the wire bowing phenomenon, increases measurement accuracy, reduces misalignment values, makes the values clearly visible, reduces silicon wafer loss due to wire breakage, and improves silicon wafer quality and yield.
Smart Images

Figure CN223623502U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of photovoltaic diamond wire cutting technology, and in particular to a grinding caliper for measuring guide wheels. Background Technology
[0002] Abrasive calipers are support devices used for measuring guide wheels. The photovoltaic industry is currently one of the most important areas of global green energy development. With technological advancements and increased environmental awareness, the photovoltaic industry has achieved significant growth in recent years. The photovoltaic industry utilizes solar energy to convert it into usable energy, and photovoltaic cells are its core product. The process of manufacturing solar cells involves casting solar-grade crystalline silicon into ingots and then squaring and slicing it, or drawing solar-grade crystalline silicon into monocrystalline silicon and then slicing it. These crystalline silicon wafers are then used to fabricate solar cells. With continuous technological development, the manufacturing process requirements for abrasive calipers used for guide wheel measurement are becoming increasingly stringent.
[0003] Existing mold calipers used for guide wheel measurement have certain drawbacks. Currently, the mainstream cutting process for crystalline silicon is diamond wire cutting, which involves electroplating diamond or bonding resin to steel wire to create diamond wire. This diamond wire is then used to cut crystalline silicon into wafers. During the wafer cutting process, wire breakage, including bowing and high-end wire breakage, can occur. Mold calipers offer significantly higher measurement accuracy than traditional set squares. This increased accuracy improves production capacity, wafer quality and yield, and reduces wafer loss due to wire breakage. Traditional set squares, when measuring guide wheel grooves, have smaller groove misalignment values and larger errors, resulting in higher rates of wire bowing and high-end wire breakage. Therefore, we propose a mold caliper for guide wheel measurement. Utility Model Content
[0004] Technical problem solved: In view of the shortcomings of the prior art, this utility model provides a mold caliper for measuring guide wheels, which has obvious effects, strong practicality, significant improvement on wire bow, increased the middle slope of the measuring guide wheel, increased the misalignment value, and made the value clearly visible. It also reduces the thickness of the sheet caused by wire mesh skew, and can effectively solve the problems in the background art.
[0005] Technical solution: To achieve the above objectives, the technical solution adopted by this utility model is as follows: a mold caliper for measuring guide wheels, comprising a caliper body, a caliper edge integrally formed on the outer side of the caliper body, a composite reinforcing sheet integrally formed on the surface of the caliper body, a main scale line opened at the bottom of the caliper body, a lower scale line opened on the side of the lower part of the caliper body, and an upper scale line opened on the side of the upper part of the caliper body.
[0006] Preferably, a positioning component is positioned inside the caliper edge near the lower corner, and a groove is formed on the middle surface of the caliper body, with an anti-slip pad positioned on the surface of the groove.
[0007] Preferably, the composite reinforcing sheet includes a first adhesive sheet, a second adhesive sheet, a PVC wear-resistant sheet, a resin sheet, and an acrylic sheet, wherein the first adhesive sheet is located on the surface of the acrylic sheet, the resin sheet is located on the surface of the first adhesive sheet, the second adhesive sheet is located on the surface of the resin sheet, and the PVC wear-resistant sheet is located on the surface of the second adhesive sheet.
[0008] Preferably, one bottom corner of the caliper body is attached to the measuring position of the guide wheel by a positioning component to ensure that it does not shift, and the groove and the anti-slip pad are positioned by adhesive.
[0009] Preferably, the first adhesive sheet, the second adhesive sheet, the PVC wear-resistant sheet, the resin sheet, and the acrylic sheet are integrally formed by compression molding.
[0010] Preferably, the caliper body, the composite reinforcing sheet, and the caliper edge are integrally formed by compression molding, and the caliper body, the main scale line, the lower scale line, and the upper scale line are integrally engraved.
[0011] Beneficial effects: Compared with the prior art, this utility model provides a mold caliper for measuring guide wheels, which has the following beneficial effects: This mold caliper for measuring guide wheels has obvious effects, strong practicality, significant improvement effect on line bowing, increased measurement of the middle slope of the guide wheel, increased misalignment value, and clear numerical value, reducing the thickness of the sheet caused by wire mesh skew. The entire mold caliper for measuring guide wheels has a simple structure, is easy to operate, and has better performance than traditional methods. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the overall structure of a mold caliper used for measuring guide wheels according to this utility model.
[0013] Figure 2 This is a structural schematic diagram of point A in a mold caliper used for measuring guide wheels according to this utility model.
[0014] Figure 3 This is a schematic diagram of the composite reinforcing sheet in a mold caliper used for guide wheel measurement according to this utility model.
[0015] In the diagram: 1. Caliper body; 2. Groove; 3. Anti-slip pad; 4. Composite reinforcing sheet; 5. Main scale line; 6. Caliper edge; 7. Positioning component; 8. Lower scale line; 9. Upper scale line; 10. First adhesive sheet; 11. Second adhesive sheet; 12. PVC wear-resistant sheet; 13. Resin sheet; 14. Acrylic sheet. Detailed Implementation
[0016] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings and specific embodiments. However, those skilled in the art will understand that the embodiments described below are only some embodiments of this utility model, not all embodiments, and are only used to illustrate this utility model, and should not be regarded as limiting the scope of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. Where specific conditions are not specified in the embodiments, conventional conditions or conditions recommended by the manufacturer shall be followed. Where the manufacturers of reagents or instruments are not specified, they are all conventional products that can be purchased commercially.
[0017] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0019] like Figure 1-3 As shown, a molded caliper for measuring guide wheels includes a caliper body 1, with a caliper edge 6 integrally formed on the outer side of the caliper body 1, a composite reinforcing sheet 4 integrally formed on the surface of the caliper body 1, a main scale line 5 at the bottom of the caliper body 1, a lower scale line 8 on the side of the lower part of the caliper body 1, and an upper scale line 9 on the side of the upper part of the caliper body 1. It has obvious effects, strong practicality, and significant improvement in line bowing. It increases the inclination of the measuring guide wheel, increases the misalignment value, and makes the values clearly visible, reducing the thickness of the sheet caused by the wire mesh skew.
[0020] Furthermore, a positioning component 7 is positioned inside the caliper edge 6 near the lower corner, and a groove 2 is provided on the middle surface of the caliper body 1, with an anti-slip pad 3 positioned on the surface of the groove 2.
[0021] Furthermore, the composite reinforcing sheet 4 includes a first adhesive sheet 10, a second adhesive sheet 11, a PVC wear-resistant sheet 12, a resin sheet 13, and an acrylic sheet 14. The first adhesive sheet 10 is located on the surface of the acrylic sheet 14, the resin sheet 13 is located on the surface of the first adhesive sheet 10, the second adhesive sheet 11 is located on the surface of the resin sheet 13, and the PVC wear-resistant sheet 12 is located on the surface of the second adhesive sheet 11.
[0022] Furthermore, the bottom corner of the caliper body 1 is attached to the measuring position of the guide wheel by the positioning component 7 to ensure that it does not shift, and the groove 2 and the anti-slip pad 3 are positioned by adhesive.
[0023] Furthermore, the first adhesive sheet 10, the second adhesive sheet 11, the PVC wear-resistant sheet 12, the resin sheet 13, and the acrylic sheet 14 are integrally formed by compression molding.
[0024] Furthermore, the caliper body 1 is integrally formed with the composite reinforcing sheet 4 and the caliper edge 6 by compression molding, and the caliper body 1 is integrally formed with the main scale line 5, the lower scale line 8 and the upper scale line 9 by engraving.
[0025] Comparative example:
[0026] Reduce ingot loss caused by wire breakage in the new guide wheel's large bow. Wire breakage leads to defects such as wire marks, TTV (transient current volume), and microcracks. Avoid reverse skewing that causes uneven wire height and thickness.
[0027] 1. The original triangle ruler measuring groove, measuring the inner angle of the guide wheel, has a small misalignment value, a large error, and a high rate of line bowing and high / low line deviation.
[0028] 2. Use mold calipers to measure the increased slope of the guide wheel, which increases the misalignment value and makes the value clearly visible, reducing the thickness of the sheet caused by the reverse skewing of the wire mesh.
[0029] Working principle: This utility model includes a caliper body 1, a groove 2, an anti-slip pad 3, a composite reinforcing sheet 4, a main scale line 5, a caliper edge 6, a positioning component 7, a lower scale line 8, an upper scale line 9, a first adhesive sheet 10, a second adhesive sheet 11, a PVC wear-resistant sheet 12, a resin sheet 13, and an acrylic sheet 14. It has obvious effects, strong practicality, and significant improvement on wire bow. The inclination of the measuring guide wheel is increased, the misalignment value is increased, the value is clearly visible, and the thickness of the sheet is reduced due to wire mesh skew.
[0030] Using molded calipers:
[0031] Measurement standards:
[0032] Left and right guide wheels: Measure 1cm from the junction of the guide wheel and the new line.
[0033] Lower guide wheel: Measure the left lower guide wheel uniformly, measuring 1cm from the junction of the guide wheel and the new line.
[0034] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A mold caliper for measuring guide wheels, comprising a caliper body (1), characterized in that: The outer side of the caliper body (1) is integrally formed with a caliper edge (6), the surface of the caliper body (1) is integrally formed with a composite reinforcing sheet (4), the bottom of the caliper body (1) is provided with a main scale line (5), the lower part of the caliper body (1) is provided with a lower scale line (8), and the upper part of the caliper body (1) is provided with an upper scale line (9).
2. The abrasive caliper for measuring guide wheels according to claim 1, characterized in that: A positioning component (7) is positioned inside the caliper edge (6) near the lower corner. A groove (2) is provided on the middle surface of the caliper body (1), and an anti-slip pad (3) is positioned on the surface of the groove (2).
3. A mold caliper for measuring guide wheels according to claim 1, characterized in that: The composite reinforcing sheet (4) includes a first adhesive sheet (10), a second adhesive sheet (11), a PVC wear-resistant sheet (12), a resin sheet (13), and an acrylic sheet (14). The first adhesive sheet (10) is located on the surface of the acrylic sheet (14), the resin sheet (13) is located on the surface of the first adhesive sheet (10), the second adhesive sheet (11) is located on the surface of the resin sheet (13), and the PVC wear-resistant sheet (12) is located on the surface of the second adhesive sheet (11).
4. A mold caliper for measuring guide wheels according to claim 2, characterized in that: The bottom corner of the caliper body (1) is attached to the measuring position of the guide wheel by the positioning component (7) to ensure that it does not shift. The groove (2) and the anti-slip pad (3) are positioned by adhesive.
5. A mold caliper for measuring guide wheels according to claim 3, characterized in that: The first adhesive sheet (10), the second adhesive sheet (11), the PVC wear-resistant sheet (12), the resin sheet (13) and the acrylic sheet (14) are integrally formed by compression molding.
6. A mold caliper for measuring guide wheels according to claim 1, characterized in that: The caliper body (1) is integrally formed with the composite reinforcing sheet (4) and the caliper edge (6) by compression molding. The caliper body (1) is integrally formed with the main scale line (5), the lower scale line (8) and the upper scale line (9) by engraving.