Main roller running-in tooling

Abstract

The utility model provides a kind of main roller running-in tool.The main roller running-in tool includes: fixed support (1), fixed support (1) is provided with mounting structure;Grinding shafting, it is rotatably installed on fixed support (1), grinding shafting includes pressure roller (2), the outer contour of pressure roller (2) is cylindrical, pressure roller (2) is configured as simultaneously pressing multiple cutting line to grind main roller groove type.According to the main roller running-in tool of the utility model, the fillet of main roller groove type can be ground, the quality of groove type is improved, the consistency of the thickness of silicon wafer in cutting process is improved, and the quality and production efficiency of silicon wafer are improved.

Description

Technical Field

[0001] This utility model relates to the field of silicon wafer processing technology, and more specifically, to a main roller break-in tooling. Background Technology

[0002] As the photovoltaic industry continues to advance, silicon wafers, as the core material, are constantly evolving towards larger sizes and thinner wafers to meet the requirements of high power and low cost. To adapt to this change, the diameter of diamond wire is also decreasing to facilitate the precise cutting of large and thin silicon wafers. However, with the reduction in the diameter of diamond wire, higher challenges are posed to the grooving accuracy of the main roller in the slicing equipment.

[0003] Traditional main roller grooving technology, especially in the treatment of the bottom rounded corners, often struggles to achieve the extreme precision required for miniaturized diamond wire. The size and quality of the bottom rounded corners directly affect the stability of the wire mesh and its uniform distribution on the main roller. Improper rounded corner treatment can cause the wire mesh to shift within the groove, affecting the consistency of silicon wafer thickness during the cutting process, thereby reducing wafer quality and production efficiency. Utility Model Content

[0004] The main purpose of this utility model is to provide a main roller running-in fixture that can grind the rounded corners of the main roller groove, improve the groove quality, improve the consistency of silicon wafer thickness during the cutting process, and improve the quality and production efficiency of silicon wafers.

[0005] To achieve the above objectives, according to one aspect of the present invention, a main roller break-in fixture is provided, comprising:

[0006] A fixed bracket, on which an installation structure is provided;

[0007] The grinding shaft system is rotatably mounted on a fixed bracket. The grinding shaft system includes a pressure roller with a cylindrical outer contour. The pressure roller is configured to simultaneously press down multiple cutting lines to grind the groove of the main roller.

[0008] Furthermore, the pressure roller includes a shaft core and a coating layer, the coating layer being applied to the outer peripheral side of the shaft core, and the coating layer being made of a wear-resistant material.

[0009] Furthermore, the shaft core includes a bushing, a bearing, and a central shaft. The bushing is fitted over the central shaft, and a bearing is provided between the bushing and the central shaft. A coating layer is applied to the outer circumference of the bushing.

[0010] Furthermore, the grinding shaft system also includes a support shaft, and the shaft core also includes a fixed sleeve. The support shaft is located at the end of the central shaft and is fixedly connected to the central shaft. The fixed sleeve is sleeved on the outside of the support shaft and is fixedly connected to the shaft sleeve. The fixed sleeve and the support shaft are in a rotating sealing fit.

[0011] Furthermore, a labyrinth seal structure is formed between the fixed sleeve and the support shaft.

[0012] Furthermore, the fixing sleeve has an inner conical hole, and a protective sleeve is installed inside the inner conical hole. The protective sleeve has an outer conical surface, and the outer conical surface and the inner conical surface of the inner conical hole form a conical surface fit. The protective sleeve is fitted outside the support shaft and forms a labyrinth seal structure with the support shaft.

[0013] Furthermore, a stop step is provided at one end of the fixed sleeve facing the support shaft, and a stop flange is provided on the outer periphery of the support shaft. The stop flange stops on the stop step. An air passage is provided between the support shaft and the central shaft. An air gap is formed between the fixed sleeve and the outer periphery of the support shaft. The air passage is connected to the air gap to form an air seal structure at the air gap.

[0014] Furthermore, a fixing plate is provided at each end of the fixing bracket. The fixing plate includes a first plate segment and a second plate segment. The first plate segment and the second plate segment form an installation shaft hole. The pressure roller is installed in the installation shaft hole, and a locking gap is formed between the first plate segment and the second plate segment.

[0015] Furthermore, a positioning block is provided on the top surface of the fixed bracket, and the positioning block is located at at least one end of the fixed bracket.

[0016] Furthermore, the main roller break-in fixture also includes a worktable, and the fixed bracket is detachably connected to the worktable.

[0017] By applying the technical solution of this utility model, the main roller running-in fixture achieves stable installation of the pressure roller through a fixed bracket. With its cylindrical outer contour and rotational freedom, the pressure roller can simultaneously press down multiple cutting lines, so that the cutting lines form a certain angle with the main roller, thereby accurately grinding the bottom rounded corner of the main roller groove, improving the groove quality, and effectively improving the uniformity of wire mesh distribution. In the process of large-size and thin-film silicon wafer cutting, it significantly improves the thickness consistency and cutting quality of silicon wafers. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0019] Figure 1 A three-dimensional structural schematic diagram of the main roller running-in fixture according to an embodiment of the present invention is shown;

[0020] Figure 2 A three-dimensional structural schematic diagram of the pressure roller of the main roller running-in fixture according to an embodiment of the present invention is shown;

[0021] Figure 3A perspective view of the fixed bracket of the main roller running-in fixture according to an embodiment of the present invention is shown;

[0022] Figure 4 A cross-sectional view of the pressure roller of the main roller running-in fixture according to an embodiment of the present invention is shown.

[0023] Figure 5 It shows Figure 4 A magnified structural diagram at point L;

[0024] Figure 6 A schematic diagram of the working state of the main roller break-in fixture according to an embodiment of the present invention is shown.

[0025] Figure 7 The wire mesh structure diagram of the main roller system is shown; and

[0026] Figure 8 A schematic diagram of the trough structure of the main roller is shown.

[0027] The above figures include the following reference numerals:

[0028] 1. Fixed bracket; 2. Pressure roller; 3. Shaft core; 4. Coating layer; 5. Bushing; 6. Bearing; 7. Central shaft; 8. Support shaft; 9. Fixed sleeve; 10. Labyrinth seal structure; 11. Inner conical hole; 12. Protective sleeve; 13. Stop step; 14. Stop flange; 15. Air passage; 16. Fixed plate; 17. First plate segment; 18. Second plate segment; 19. Mounting shaft hole; 20. Positioning block; 21. Worktable; 22. Main roller; 23. Wire mesh; 24. Main roller groove. Detailed Implementation

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0031] In this utility model, unless otherwise stated, directional terms such as "upper" and "lower" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" are generally used in relation to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0032] See also Figures 1 to 8As shown, according to an embodiment of the present invention, the main roller running-in fixture includes: a fixed bracket 1, on which an installation structure is provided; a grinding shaft system, which is rotatably mounted on the fixed bracket 1, the grinding shaft system including a pressure roller 2, the outer contour of the pressure roller 2 being cylindrical, and the pressure roller 2 being configured to simultaneously press down multiple cutting lines to grind the groove of the main roller.

[0033] The main roller break-in fixture achieves stable installation of the pressure roller 2 through the fixed bracket 1. With its cylindrical outer contour and rotational freedom, the pressure roller 2 can press down multiple cutting lines simultaneously, so that the cutting lines form a certain angle with the main roller, thereby accurately grinding the bottom rounded corner of the main roller groove, improving the groove quality, and effectively improving the uniformity of wire mesh distribution. In the process of large-size and thin-film silicon wafer cutting, it significantly improves the thickness consistency and cutting quality of silicon wafers.

[0034] The tension of the entire wire mesh system is controlled by a dynamic tension adjustment system to ensure tension stability. However, slight fluctuations in tension may occur when the pressure roller 2 of the main roller break-in fixture presses down on the wire mesh 23. During high-speed cutting, the reciprocating motion of the cutting line of the wire mesh 23 contacts the main roller at an extremely high frequency. If tension fluctuations occur when the pressure roller 2 presses down on the wire mesh 23, slight sliding can occur within the main roller groove 24, correcting the rounded corners within the main roller groove 24 and thus finely grinding the main roller groove shape.

[0035] In one embodiment, the cutting wire is, for example, diamond wire.

[0036] When the main roller break-in fixture presses down on the wire mesh, the wrap angle and effective length formed by the main roller 22 wrapped with the cutting wire increase, which can increase the area of ​​the main roller groove shape being ground per unit time. On the other hand, since the rounded corners inside the groove of the main roller 22 are not the same after grooving, the cutting wires wrapped on the main roller 22 are not on the same horizontal line. However, by pressing down on the wire mesh 22, the characteristic that the bottom of the pressure roller 2 is at the same height can be utilized to make the cutting wires that are pressed down by the bottom of the pressure roller 2 and are located on the same axial direction eventually on the same horizontal line. This can ensure that the wire mesh distribution is uniform and on the same horizontal line after grinding the main roller groove shape, thereby improving the groove shape quality and the cutting quality.

[0037] In one embodiment, the pressure roller 2 includes a shaft core 3 and a coating layer 4, the coating layer 4 being applied to the outer peripheral side of the shaft core 3, and the coating layer 4 being made of a wear-resistant material.

[0038] The outer periphery of the shaft core 3 of the pressure roller 2 is coated with a wear-resistant material coating layer 4. During the high-speed rotation grinding process, the wear-resistant coating layer 4 is in direct contact with the diamond wire. Through its excellent wear resistance, it effectively reduces wear, ensures the long-term stable operation of the pressure roller 2 and the precise grinding of the main roller groove, thereby improving the consistency of wire mesh distribution and the accuracy of silicon wafer cutting.

[0039] The coating layer 4 significantly enhances the durability of the pressure roller 2, avoids material loss under high-speed and high-frequency contact, and ensures that the pressure roller 2 can maintain its original cylindrical outer contour after long-term operation. The grinding effect of the bottom rounded corner of the main roller groove is not affected, thereby ensuring the uniform distribution of the wire mesh on the main roller, maintaining the consistency of silicon wafer thickness, and improving the production quality and efficiency of photovoltaic silicon wafers.

[0040] Wear-resistant materials include, for example, polyurethane, ceramic materials, and metal alloys.

[0041] In one embodiment, the shaft core 3 includes a bushing 5, a bearing 6, and a central shaft 7. The bushing 5 is sleeved on the outside of the central shaft 7, and the bearing 6 is disposed between the bushing 5 and the central shaft 7. The coating layer 4 is applied to the outer periphery of the bushing 5.

[0042] The shaft core 3 includes a bushing 5, a bearing 6, and a central shaft 7. The bushing 5 is fitted outside the central shaft 7 and the bearing 6 enables low-friction rotation between the two, ensuring that the pressure roller 2 can rotate freely while bearing the pressure of the diamond wire. The coating layer 4 is applied to the outer circumference of the bushing 5. During the high-speed and high-intensity running-in process, it not only plays a role in wear protection but also ensures effective contact and uniform force between the pressure roller 2 and the wire mesh, thereby effectively grinding the main roller groove shape and improving the precision of silicon wafer cutting and the quality of finished products.

[0043] The bearing 6 reduces friction between the bushing 5 and the central shaft 7, ensuring smooth rotation even when the pressure roller 2 is under the pressure of the wire mesh. This prevents heat accumulation and material loss due to excessive friction, thus guaranteeing the stability and service life of the pressure roller 2. The coating layer 4 further enhances the wear resistance and durability of the pressure roller 2, ensuring that it maintains its smooth surface and accurate geometry even under prolonged, high-intensity working conditions. This provides stable and efficient grinding of the main roller groove, contributing to improved wire mesh uniformity and overall silicon wafer cutting efficiency.

[0044] In one embodiment, the grinding shaft system further includes a support shaft 8, and the shaft core 3 further includes a fixing sleeve 9. The support shaft 8 is disposed at the end of the central shaft 7 and is fixedly connected to the central shaft 7. The fixing sleeve 9 is sleeved on the outside of the support shaft 8 and is fixedly connected to the bushing 5. The fixing sleeve 9 and the support shaft 8 are in a rotating sealing fit.

[0045] The grinding shaft system, through the combination structure of the support shaft 8 and the fixed sleeve 9, achieves reliable fixation and rotational sealing between the shaft core 3 and the outside, ensuring that the pressure roller 2 maintains stable axial positioning and effectively isolates external contaminants when bearing the pressure of diamond wire and performing high-speed rotation grinding of the main roller groove, thus extending the service life of the shaft core 3 and ensuring high efficiency and accuracy during the running-in process of the cutting wire mesh and the main roller groove.

[0046] In this structure, the fixed connection between the support shaft 8 and the central shaft 7 provides a robust end support for the pressure roller 2, ensuring its axial rigidity during high-speed rotation and break-in. The rotational sealing fit between the fixed sleeve 9 and the support shaft 8 forms an effective sealing barrier, preventing contaminants such as silicon powder and moisture from entering the shaft core 3 within the cutting chamber. This avoids wear and failure of the bearing 6 and other critical components, thus maintaining the smoothness and reliability of the shaft core 3 and the entire grinding shaft system during long-term continuous operation. This lays a solid foundation for improving the consistency of silicon wafer thickness and cutting quality.

[0047] In one embodiment, the end of the support shaft 8 is provided with a threaded hole, and the end of the central shaft 7 is provided with a threaded head. The threaded head cooperates with the threaded hole to realize the threaded fixed connection between the support shaft 8 and the central shaft 7.

[0048] In one embodiment, a labyrinth seal structure 10 is formed between the fixed sleeve 9 and the support shaft 8.

[0049] The labyrinth seal structure 10 formed between the fixed sleeve 9 and the support shaft 8 utilizes a tortuous channel design to effectively block the intrusion of external contaminants such as silicon powder and moisture, even during the high-speed rotation of the pressure roller 2 and the application of diamond wire pressure. At the same time, it allows the lubricant inside the shaft core 3 to circulate, ensuring the long-term stable operation of key components such as the bearing 6 and the high reliability of the entire grinding shaft system. This provides an important guarantee for achieving precise grinding of the main roller groove and optimizing the silicon wafer cutting effect.

[0050] Specifically, the multi-path design of the labyrinth seal structure 10 forces any contaminants attempting to enter the shaft core 3 to traverse a series of complex and tortuous paths, significantly increasing the difficulty of their penetration. Simultaneously, the centrifugal force generated by high-speed rotation further helps to prevent contaminants from entering, while the lubricant inside the shaft core 3 can be recycled under the protection of the labyrinth seal structure 10, reducing lubricant consumption, extending maintenance cycles, and ensuring the normal operation and long-term working capability of the shaft core 3 and its components in harsh environments.

[0051] In one embodiment, the fixing sleeve 9 has an inner conical hole 11, and a protective sleeve 12 is disposed inside the inner conical hole 11. The protective sleeve 12 has an outer conical surface, and the outer conical surface and the inner conical surface of the inner conical hole 11 form a conical surface fit. The protective sleeve 12 is sleeved on the outside of the support shaft 8 and forms a labyrinth seal structure 10 between the protective sleeve 12 and the support shaft 8.

[0052] The inner conical hole 11 of the fixed sleeve 9 and the outer conical surface of the protective sleeve 12 form a precision conical surface fit, and together they form a labyrinth seal structure 10 on the outside of the support shaft 8. This structure not only ensures the axial stability and rotational sealing of the pressure roller 2 when subjected to diamond wire pressure and high-speed rotation grinding of the main roller groove, but also enhances the positioning accuracy of the fixed sleeve 9 and the protective sleeve 12 through the conical surface fit. The protective sleeve 12 can effectively protect the conical surface of the fixed sleeve 9 and enable the fixed sleeve 9 to achieve a precise centering function, further improving the sealing effect. It effectively prevents contaminants such as silicon powder and moisture in the cutting environment from entering the shaft core 3, ensuring the operating efficiency and service life of key components such as the bearing 6, thereby maintaining the running-in quality between the cutting wire mesh and the main roller and the high precision of silicon wafer cutting.

[0053] In this system, the conical fit provides additional fastening and positioning, allowing the protective sleeve 12 to be more securely installed within the fixed sleeve 9 while withstanding external pressure, reducing loosening caused by vibration or wear. The labyrinth seal structure 10, through a series of narrow gaps and tortuous paths, effectively blocks the intrusion of contaminants even under extreme working conditions, while allowing the necessary lubrication and cooling gas to flow, ensuring that the spindle 3 is always in optimal working condition during the cutting process, reducing maintenance needs and improving production efficiency.

[0054] In one embodiment, a stop step 13 is provided at one end of the fixed sleeve 9 facing the support shaft 8, and a stop flange 14 is provided on the outer periphery of the support shaft 8. The stop flange 14 stops on the stop step 13. An air passage 15 is provided in the support shaft 8 and the central shaft 7 to communicate with each other. An air gap is formed between the fixed sleeve 9 and the protective sleeve 12 and the outer periphery of the support shaft 8. The air passage 15 communicates with the air gap to form an air seal structure S at the air gap.

[0055] The design of the stop step 13 and the stop flange 14, combined with the air gap formed between the fixed sleeve 9 and the protective sleeve 12 and the support shaft 8 and the connection of the air passage 15, constructs a dynamic air seal structure. When the pressure roller 2 is subjected to diamond wire pressure and the main roller groove is being ground at high speed, it not only ensures the precise positioning and stability of the shaft assembly, but also forms a dynamic air film at the air gap through the air passage 15, effectively isolating contaminants such as silicon powder and moisture in the cutting chamber. This significantly enhances the sealing performance of the shaft core 3 and the protection of the bearing 6, ensuring the long-term stable operation of the system and improving the quality and efficiency of silicon wafer cutting.

[0056] In this embodiment, the stop step 13 is used to define the axial installation position of the support shaft 8. During the threaded connection between the support shaft 8 and the central shaft 7, after the thread rotates a certain distance, the stop flange 14 of the support shaft 8 axially stops on the stop step 13 and cannot continue to rotate. This defines the axial mating position of the support shaft 8 and the central shaft 7, ensuring the accuracy of the assembly position of the central shaft 7. At the same time, it can prevent the end faces of the central shaft 7 and the support shaft 8 from touching, so as to form an air gap between the outer peripheral end faces of the central shaft 7 and the support shaft 8 for airflow, forming an air seal structure S. The air seal structure S, in conjunction with the labyrinth seal structure 10, can form a double sealing protection, which can more effectively prevent water and silicon powder in the cutting chamber from entering the shaft core.

[0057] The stop flange 14 restricts the axial movement of the protective sleeve 12, preventing displacement during high-speed rotation or pressure changes, thus ensuring the structural stability and positioning accuracy of the entire shaft core 3 assembly. Simultaneously, the introduction of the air passage 15, combined with the dynamic air film formation mechanism, maintains a clean environment inside the shaft core 3 while reducing heat generation and material wear caused by contact friction, providing comprehensive protection and maintenance strategies for the shaft core 3 and the grinding shaft system.

[0058] In this embodiment, air passages 15 are provided on both the support shaft 8 and the central shaft 7. The air passage 15 on the support shaft 8 mainly extends axially, and the air passage 15 on the central shaft 7 includes an axial section and a radial section. The axial section is connected to the air passage 15 on the support shaft 8, and the radial section is connected to the axial section. This allows the gas transported by the air passage 15 on the support shaft 8 to reach the radial air gap between the fixed sleeve 9 and the protective sleeve 12 and the support shaft 8 through the axial section and the radial section, forming an air flow path at the end of the shaft core. This effectively prevents water and silicon powder from entering the shaft core during the airflow along the air flow path.

[0059] In one embodiment, the fixed bracket 1 is provided with a fixed plate 16 at both ends. The fixed plate 16 includes a first plate segment 17 and a second plate segment 18. The first plate segment 17 and the second plate segment 18 form a mounting shaft hole 19. The pressure roller 2 is installed in the mounting shaft hole 19. A locking gap is formed between the first plate segment 17 and the second plate segment 18.

[0060] The fixing plates 16 at both ends of the fixed bracket 1 form mounting shaft holes 19 by the first plate segment 17 and the second plate segment 18. This not only accurately installs and positions the pressure roller 2, enabling it to maintain the stability required for high-speed rotation and grinding of the main roller groove while withstanding the pressure of the diamond wire, but also facilitates the quick disassembly and maintenance of the pressure roller 2 by the locking gap design between the first plate segment 17 and the second plate segment 18. After the support shaft 8 is installed into the mounting shaft hole 19 formed by the first plate segment 17 and the second plate segment 18, the first plate segment 17 and the second plate segment 18 are fixed together by bolts. The gap between the first plate segment 17 and the second plate segment 18 allows the support shaft 8 to be locked during the bolt tightening process, ensuring the stability and reliability of the installation structure of the support shaft 8.

[0061] In this structure, the mounting shaft hole 19 ensures the axial positioning of the pressure roller 2, while the tight enclosure of the first plate segment 17 and the second plate segment 18 provides stable support and guidance, ensuring that the pressure roller 2 can accurately and stably contact the main roller groove under the dual effects of high-speed rotation and wire mesh pressure, achieving an efficient grinding effect. The existence of the locking gap simplifies the installation and disassembly process of the pressure roller 2, reduces maintenance costs, and by adjusting the gap size, it can accommodate pressure rollers 2 of different sizes and types, enhancing the system's adaptability and versatility.

[0062] In one embodiment, a positioning block 20 is provided on the top surface of the fixed bracket 1, and the positioning block 20 is located at at least one end of the fixed bracket 1.

[0063] The positioning block 20 set on the top surface of the fixed bracket 1 ensures its precise alignment and stable fixation during the assembly process. Especially under the dynamic conditions of bearing the diamond wire cutting force transmitted by the pressure roller 2 and high-speed rotation, the positioning block 20 can reduce the displacement or vibration of the fixed bracket 1, maintain the structural rigidity and positional accuracy of the entire main roller break-in fixture, thereby ensuring the stability and consistency of the pressure roller 2 and the main roller groove contact grinding, improving the silicon wafer cutting quality and efficiency, and also facilitating the rapid installation and calibration of the fixture, ensuring the continuity and reliability of the production line.

[0064] The design of the positioning block 20 is not only crucial for the initial positioning of the device, but also provides continuous positioning correction and stable support during subsequent operation. Acting on at least one end of the fixed support 1, it generates a uniform constraint force, preventing deformation or displacement caused by uneven local stress. This structure ensures that the pressure roller 2 precisely grinds the main roller groove at specific positions, and also facilitates the rapid installation and adjustment of the fixed support 1 on different worktables 21 or cutting machines, reducing operational difficulty and improving the adaptability and flexibility of the equipment.

[0065] In one embodiment, the main roller break-in fixture also includes a worktable 21, and the fixed bracket 1 is detachably connected to the worktable 21.

[0066] The main roller break-in fixture features a detachable connection between the worktable 21 and the fixed bracket 1, allowing for quick and easy installation and disassembly on different cutting equipment or production lines. This simplifies maintenance and replacement processes and ensures that the fixed bracket 1 remains firmly fixed to the worktable 21 under dynamic conditions of cutting force transmitted by the pressure roller 2 and high-speed rotation. This maintains the structural stability and cutting accuracy of the fixture, thereby improving silicon wafer production efficiency and quality.

[0067] In actual operation, the workbench 21 serves as the basic support surface, providing a stable installation platform for the fixed bracket 1. The detachable connection mechanism ensures that when maintenance, adjustment, or replacement of other tooling is required, it can be quickly separated and reassembled, reducing production downtime and labor costs.

[0068] In one embodiment, the workbench 21 and the fixed bracket 1 are fixedly connected by bolts.

[0069] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0070] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0071] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0072] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. 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 main roller break-in fixture, characterized in that, include: A fixed bracket (1) is provided with an installation structure; The grinding shaft system is rotatably mounted on the fixed bracket (1). The grinding shaft system includes a pressure roller (2) with a cylindrical outer contour. The pressure roller (2) is configured to simultaneously press down multiple cutting lines to grind the groove of the main roller.

2. The main roller break-in fixture according to claim 1, characterized in that, The pressure roller (2) includes a shaft core (3) and a coating layer (4). The coating layer (4) is applied to the outer periphery of the shaft core (3) and is made of a wear-resistant material.

3. The main roller break-in fixture according to claim 2, characterized in that, The shaft core (3) includes a bushing (5), a bearing (6) and a central shaft (7). The bushing (5) is sleeved on the outside of the central shaft (7). The bearing (6) is disposed between the bushing (5) and the central shaft (7). The coating layer (4) is applied to the outer periphery of the bushing (5).

4. The main roller break-in fixture according to claim 3, characterized in that, The grinding shaft system also includes a support shaft (8), and the shaft core (3) also includes a fixing sleeve (9). The support shaft (8) is disposed at the end of the central shaft (7) and is fixedly connected to the central shaft (7). The fixing sleeve (9) is sleeved on the outside of the support shaft (8) and is fixedly connected to the bushing (5). The fixing sleeve (9) and the support shaft (8) are in a rotating sealing fit.

5. The main roller break-in fixture according to claim 4, characterized in that, A labyrinth seal structure (10) is formed between the fixed sleeve (9) and the support shaft (8).

6. The main roller break-in fixture according to claim 4, characterized in that, The fixing sleeve (9) has an inner conical hole (11), and a protective sleeve (12) is provided inside the inner conical hole (11). The protective sleeve (12) has an outer conical surface, and the outer conical surface and the inner conical surface of the inner conical hole (11) form a conical surface fit. The protective sleeve (12) is sleeved on the outside of the support shaft (8) and forms a labyrinth seal structure (10) between the protective sleeve (12) and the support shaft (8).

7. The main roller break-in fixture according to claim 6, characterized in that, The fixed sleeve (9) is provided with a stop step (13) at one end facing the support shaft (8). The support shaft (8) is provided with a stop flange (14) on its outer periphery. The stop flange (14) stops on the stop step (13). The support shaft (8) and the central shaft (7) are provided with an air passage (15) that communicates with each other. The fixed sleeve (9) and the protective sleeve (12) are both connected to the outer periphery of the support shaft (8) to form an air gap. The air passage (15) communicates with the air gap to form an air seal structure at the air gap.

8. The main roller running-in fixture according to any one of claims 1 to 7, characterized in that, The fixed bracket (1) has a fixed plate (16) at each end. The fixed plate (16) includes a first plate segment (17) and a second plate segment (18). The first plate segment (17) and the second plate segment (18) form a mounting shaft hole (19). The pressure roller (2) is installed in the mounting shaft hole (19). A locking gap is formed between the first plate segment (17) and the second plate segment (18).

9. The main roller running-in fixture according to any one of claims 1 to 7, characterized in that, The top surface of the fixed bracket (1) is provided with a positioning block (20), and the positioning block (20) is located at at least one end of the fixed bracket (1).

10. The main roller running-in fixture according to any one of claims 1 to 7, characterized in that, The main roller break-in fixture also includes a worktable (21), and the fixed bracket (1) is detachably connected to the worktable (21).

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