Bearing mechanism, roll device, dry film forming device, and battery manufacturing apparatus

Abstract

The embodiment of the invention provides a bearing mechanism, a roller device, a dry film forming device and battery manufacturing equipment, the bearing mechanism comprises a bearing seat, a bearing structure, a bushing structure and a fastening structure, and a mounting cavity is formed in the bearing seat; the bearing structure is arranged in the mounting cavity and is used for penetrating through the rotating shaft; the bushing structure is arranged between the bearing structure and the bearing seat; the fastening structure comprises a first fastening piece and a second fastening piece, the first fastening piece and the second fastening piece act on the peripheral side of the bush structure in the radial direction, the fastening direction of the first fastening piece is opposite to the fastening direction of the second fastening piece, it can be ensured that stress of the bearing structure and the rotating shaft is balanced, a movable gap in the bearing is eliminated, and the bearing structure is more stable. And the rotating stability of the rotating mechanism is ensured.

Description

Technical Field

[0001] This application belongs to the field of mechanical transmission technology. Specifically, this application relates to a bearing mechanism, a rolling mill device, a dry film forming device, and a battery manufacturing equipment. Background Technology

[0002] In the field of mechanical transmission and rotation, most rotating mechanisms are mounted on bearing housings via bearings and are driven by motors to achieve rotation.

[0003] In related technologies, on the one hand, there are internal clearances within the bearing itself; on the other hand, the assembly process between the bearing and the bearing housing is difficult to achieve an absolutely tight fit, resulting in assembly clearances. The existence of these clearances causes the rotating mechanism to wobble off-axis during rotation. This wobble not only leads to unstable rotation, vibration, and noise, but also accelerates component wear and shortens the service life of the transmission structure. Summary of the Invention

[0004] One objective of this application is to provide a new technical solution for a bearing mechanism, a rolling mill device, a dry film forming device, and a battery manufacturing equipment.

[0005] According to a first aspect of the embodiments of this application, a bearing mechanism is provided, comprising: Bearing housing, wherein the bearing housing has a mounting cavity; A bearing structure is provided within the mounting cavity and is used to pass through a rotating shaft; A bushing structure is provided between the bearing structure and the bearing housing; A fastening structure, comprising a first fastener and a second fastener, wherein the first fastener and the second fastener act radially on the outer periphery of the bushing structure, and the fastening direction of the first fastener is opposite to that of the second fastener.

[0006] Optionally, the bearing structure includes a first bearing, the bushing structure includes a first bushing, the first bearing is disposed in the mounting cavity, and the first bushing is disposed between the first bearing and the bearing housing; The first fastener and the second fastener act on the outer periphery of the first bushing.

[0007] Optionally, the bearing structure includes a first bearing and a second bearing, wherein the first bearing and the second bearing are coaxially disposed within the mounting cavity and are used to jointly pass through the rotating shaft; The bushing structure includes a first bushing and a second bushing, wherein the first bushing is disposed between the first bearing and the bearing housing, and the second bushing is disposed between the second bearing and the bearing housing; The first fastener acts on the outer peripheral side of at least one of the first bushing and the second bushing, and the second fastener acts on the outer peripheral side of at least one of the first bushing and the second bushing.

[0008] Optionally, the first fastener acts on the outer peripheral side of the first bushing, and the second fastener acts on the outer peripheral side of the second bushing.

[0009] Optionally, the first fastener includes a first fastening component and a second fastening component, the second fastener includes a third fastening component and a fourth fastening component, the first fastening component and the third fastening component act on the outer peripheral side of the first bushing and fasten in opposite directions, and the second fastening component and the fourth fastening component act on the outer peripheral side of the second bushing and fasten in opposite directions.

[0010] Optionally, the bearing housing is provided with a first locking hole and a second locking hole communicating with the mounting cavity. The first fastener is assembled to the first locking hole and abuts against the outer peripheral side of the bushing structure, and the second fastener is assembled to the second locking hole and abuts against the outer peripheral side of the bushing structure.

[0011] Optionally, the outer periphery of the bushing structure has a first limiting groove and a second limiting groove, the fastening end of the first fastener is fitted into the first limiting groove, and the fastening end of the second fastener is fitted into the second limiting groove.

[0012] According to a second aspect of the embodiments of this application, a rolling mill device is provided, the rolling mill device including a rotating mechanism and the bearing mechanism described in the first aspect; The rotating mechanism is rotatably connected to the bearing mechanism.

[0013] Optionally, the rotating mechanism includes a plurality of rollers arranged side by side and a rotating shaft located at the end of the rollers, and the bearing mechanism includes a plurality of first bearings and second bearings, with the rotating shaft correspondingly assembled in a set of first bearings and second bearings.

[0014] According to a third aspect of the embodiments of this application, a dry film formation apparatus is provided, the dry film formation apparatus including the bearing mechanism described in the first aspect; or... Including the rolling mill assembly described in the second aspect.

[0015] According to a fourth aspect of the embodiments of this application, a battery manufacturing apparatus is provided, the battery manufacturing apparatus including the bearing mechanism described in the first aspect; or... Including the rolling mill assembly described in the second aspect; or, Including the dry film-forming apparatus described in the third aspect.

[0016] One technical advantage of this application is: This application provides a bearing mechanism, which includes a bearing housing, a bearing structure, a bushing structure, and a fastening structure. The bearing housing has a mounting cavity; the bearing structure is disposed in the mounting cavity and is used to pass through a rotating shaft; the bushing structure is disposed between the bearing structure and the bearing housing; the fastening structure includes a first fastener and a second fastener, which act radially on the outer periphery of the bushing structure, and the fastening direction of the first fastener is opposite to that of the second fastener, which can ensure the force balance between the bearing structure and the rotating shaft, eliminate the play in the bearing, and ensure the smooth rotation of the rotating mechanism.

[0017] Other features and advantages of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present application and, together with their description, serve to explain the principles of the present application.

[0019] Figure 1 This is a schematic diagram of a rolling mill apparatus provided in one embodiment of this application; Figure 2 for Figure 1 Cross-sectional view along plane AA; Figure 3 A schematic diagram of the bearing mechanism in a first type of rolling mill device provided in an embodiment of this application; Figure 4 A schematic diagram of the bearing mechanism in a second type of rolling mill device provided in one embodiment of this application; Figure 5 A schematic diagram of a bearing housing in a rolling mill assembly, provided as an embodiment of this application; Figure 6 A schematic diagram of a bushing structure for a bearing mechanism in a rolling mill device, provided as an embodiment of this application; Figure 7 A schematic diagram of the bearing mechanism in a third type of rolling mill device provided in one embodiment of this application; Figure 8 A schematic diagram of a bearing housing in another rolling mill device provided for one embodiment of this application; Figure 9 This is a schematic diagram of the bushing structure of the bearing mechanism in another rolling mill device provided in one embodiment of this application.

[0020] in: 100. Bearing mechanism; 1. Bearing housing; 11. First locking hole; 12. Second locking hole; 2. Bearing structure; 21. First bearing; 22. Second bearing; 3. Bushing structure; 31. First bushing; 32. Second bushing; 33. First limiting groove; 34. Second limiting groove; 4. Fastening structure; 41. First fastener; 411. First fastening component; 412. Second fastening component; 42. Second fastener; 421. Third fastening component; 422. Fourth fastening component; 5. Locking nut; 6. Dustproof retaining ring; 200. Rotating mechanism; 201. Roller; 202. Shaft. Detailed Implementation

[0021] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present application.

[0022] The embodiments of this application will now be described in detail, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0023] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0024] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application 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 application.

[0025] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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 between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0027] Reference Figure 1 and Figure 2 This application provides a bearing mechanism 100, which includes: Bearing housing 1, bearing housing 1 has a mounting cavity; Bearing structure 2 is set in the mounting cavity and is used to pass through the rotating shaft; Bushing structure 3 is disposed between bearing structure 2 and bearing housing 1; The fastening structure 4 includes a first fastener 41 and a second fastener 42. The first fastener 41 and the second fastener 42 act radially on the outer periphery of the bushing structure 3, and the fastening direction of the first fastener 41 is opposite to the fastening direction of the second fastener 42.

[0028] In the above embodiment, the bearing housing 1 provides installation space for the bearing structure 2 and can provide basic support for the entire bearing mechanism 100, ensuring that the bearing structure 2 provides a stable structural foundation for the subsequent installation and rotation of the rotating shaft.

[0029] See Figure 2 The inner ring of the bearing structure 2 is directly interference-fitted with the rotating shaft 202, and the outer ring of the bearing structure 2 is assembled in the mounting cavity inside the bearing housing 1. The rotation of the rotating shaft 202 can be achieved through the relative rotation between the inner and outer rings of the bearing structure 2, reducing friction during the rotation of the rotating shaft, ensuring the smoothness of the rotating shaft during the rotation process, and transmitting the rotation of the rotating shaft 202 to the entire rotating mechanism 200.

[0030] In the above embodiment, the bushing structure 3 is disposed between the bearing structure 2 and the bearing housing 1. The bushing structure 3 plays a buffering and protective role, avoiding wear that may occur from direct contact between the bearing structure 2 and the bearing housing 1. On the other hand, the bushing structure 3 is the object of the fastening structure 4. Through the action of the fastening structure 4 on the bushing structure 3, the centering position of the bearing structure 2 can be better maintained, which helps to stabilize the axial position of the rotating shaft 202, wherein the axial center of the rotating shaft 202 is coaxial with the axial center of the bearing structure 2.

[0031] See Figure 2 and Figure 3 The first fastener 41 and the second fastener 42 act in opposite directions on the bushing structure 3, ensuring balanced force on the bearing structure 2 and the rotating shaft. That is, by applying uniform and opposing forces to the bushing structure 3 through the first fastener 41 and the second fastener 42, the rotating structure with the rotating shaft is pre-tightened, effectively eliminating radial clearance in the bearing mechanism 100. For example, by applying opposing radial-inward pre-tightening forces to the bushing structure 3 through the first fastener 41 and the second fastener 42, the clearance between the inner and outer rings of the bearing structure 2 and the movement clearance between the bearing structure 2 and the bearing housing 1 is eliminated, allowing the bearing structure 2 and the rotating shaft to remain in the center position. This avoids the problem of wobbling due to clearance during rotation of the rotating mechanism with the rotating shaft, thereby ensuring the smoothness of rotation, reducing vibration and noise generated during rotation, and improving the service life of the bearing mechanism and the rotating mechanism.

[0032] In one embodiment, see Figure 1 and Figure 2 The rotating mechanism has shafts at both ends, which are respectively assembled into the bearing structure 2 of the bearing mechanism 100. The bushing structure 3 is subjected to uniform and relative preload by the first fastener 41 and the second fastener 42, which can keep the shafts at both ends concentric and prevent the rotating mechanism installed in the bearing mechanism from shaking during rotation.

[0033] In some embodiments, the number of first fasteners 41 can be one or more, and the number of second fasteners 42 can also be one or more. When there are multiple first fasteners 41, there are multiple second fasteners 42, and the number of second fasteners 42 is the same as the number of first fasteners 41. The multiple first fasteners 41 can apply a preload to the outer periphery of the bushing structure 3 along a first direction, and the multiple second fasteners 42 can apply a preload to the outer periphery of the bushing structure 3 along a second direction, which is opposite to the first direction. Alternatively, a portion of the multiple first fasteners 41 can apply a preload to the outer periphery of the bushing structure 3 along the first direction, and the multiple first fasteners 42 can apply a preload to the outer periphery of the bushing structure 3 along a second direction. Another portion of the fastener 41 applies a preload along a third direction to the outer periphery of the bushing structure 3. A portion of the plurality of second fasteners 42 applies a preload along a second direction to the outer periphery of the bushing structure 3. Another portion of the plurality of second fasteners 42 applies a preload along a fourth direction to the outer periphery of the bushing structure 3. The second direction is opposite to the first direction, and the fourth direction is opposite to the third direction. Overall, the tightening direction of the first fastener 41 is still opposite to the tightening direction of the second fastener 42. This can eliminate the gap between the inner and outer rings of the bearing structure 2 and the movement gap between the bearing structure 2 and the bearing seat 1, so that the shaft rotates smoothly.

[0034] In the above embodiments, the second direction and the first direction can extend along the first diameter direction, and the fourth direction and the third direction can extend along the second diameter direction. The first diameter extension direction and the second diameter extension direction can be parallel to enhance the fastening effect of the fastening structure 4 acting on the outer periphery of the bushing structure 3 along the diameter extension direction; or the first diameter extension direction and the second diameter extension direction can be perpendicular to enhance the balance of the fastening structure 4 acting on the outer periphery of the bushing structure 3 along two mutually perpendicular directions, such as... Figure 5 and Figure 6 As shown.

[0035] It is worth noting that the fastening direction of the first fastener 41 and the second fastener 42 provided in this application embodiment is radial and both face the axis. When the first fastener 41 and the second fastener 42 act on the bushing structure 3 in opposite directions, the bushing structure 3 is displaced inward under the preload of the first fastener 41 and the second fastener 42 to eliminate the bearing clearance and ensure that the rotating shaft is stably and evenly stressed.

[0036] In some embodiments, see Figure 3 The bearing structure 2 includes a first bearing 21, and the bushing structure 3 includes a first bushing 31. The first bearing 21 is disposed in the mounting cavity, and the first bushing 31 is disposed between the first bearing 21 and the bearing housing 1. The first fastener 41 and the second fastener 42 act on the outer periphery of the first bushing 31 and the fastening directions of the first fastener 41 and the second fastener 42 are opposite.

[0037] In the above embodiment, the first bearing 21, through the cooperation of its rolling elements (such as balls or rollers) with the inner and outer rings, transforms the sliding friction between the shaft and the bearing housing 1 into rolling friction, allowing the shaft to rotate more smoothly. The first bushing 31, positioned between the first bearing 21 and the bearing housing 1, serves two purposes: firstly, it provides cushioning and isolation, preventing direct contact between the first bearing 21 and the bearing housing 1, thus preventing wear caused by relative movement during rotation and protecting the surface finish and structural integrity of both the first bearing 21 and the bearing housing 1; secondly, the first bushing 31 provides a leverage point for the fastening structure 4, facilitating adjustments to the relative position and tightness between the first bearing 21 and the bearing housing 1 via the fastening structure 4.

[0038] See Figure 3 The first fastener 41 and the second fastener 42 apply forces to the first bushing 31 from opposite directions, ensuring that the first bushing 31 is uniformly compressed in the radial direction. This allows the first bushing 31 to better press the first bearing 21 and the bearing housing 1, eliminating radial clearances inside the first bearing 21 and between it and the bearing housing 1. Furthermore, the opposing fastening forces provided by the first fastener 41 and the second fastener 42 are mutually balanced, ensuring balanced force on the shaft during rotation. This avoids eccentric rotation caused by uneven force on the shaft due to unilateral fastening, ensuring the smooth rotation of the rotating mechanism, reducing vibration and noise generated during rotation, and extending the service life of the bearing mechanism and the entire rotating mechanism. In some embodiments, see Figure 4 and Figure 7 The bearing structure 2 includes a first bearing 21 and a second bearing 22. The first bearing 21 and the second bearing 22 are coaxially arranged in the mounting cavity and are used to jointly pass through the rotating shaft. The bushing structure 3 includes a first bushing 31 and a second bushing 32. The first bushing 31 is disposed between the first bearing 21 and the bearing housing 1, and the second bushing 32 is disposed between the second bearing 22 and the bearing housing 1. The first fastener 41 acts on the outer peripheral side of at least one of the first bushing 31 and the second bushing 32, and the second fastener 42 acts on the outer peripheral side of at least one of the first bushing 31 and the second bushing 32.

[0039] In the above embodiments, the first bearing 21 and the second bearing 22 are used to support the rotating shaft together, which can improve the support capacity and stability of the bearing structure 2 for the rotating shaft, better distribute the radial force and axial force loads borne by the rotating shaft during rotation, ensure that the rotating shaft can still rotate smoothly under complex working conditions such as high speed and heavy load, and improve transmission efficiency.

[0040] See Figure 4The first bushing 31 and the second bushing 32 are respectively provided for the first bearing 21 and the second bearing 22, serving to buffer, isolate, and protect the bearing structure 2. In addition, the bushings can also serve as adjustment components. By changing the size or material of the bushings, the fit clearance between the bearing and the bearing housing can be adjusted, thereby improving the assembly accuracy and operational stability of the entire bearing mechanism.

[0041] In the above embodiments, by applying force to the first bushing 31 and / or the second bushing 32 from different directions by the first fastener 41 and the second fastener 42, the radial clearance of the bearing mechanism can be effectively eliminated, thereby ensuring a stable fit between the bearing and the bearing housing, avoiding the shaking of the shaft due to the clearance during rotation, ensuring the balanced force on the shaft, and guaranteeing the smooth rotation of the rotating mechanism.

[0042] It is worth noting that the bearing structure 2 provided in this application embodiment may include three, four or more bearings; the bushing structure 3 may include three, four or more bushings, and this application embodiment does not limit this.

[0043] In some embodiments, see Figures 4 to 6 The first fastener 41 acts on the outer periphery of the first bushing 31, and the second fastener 42 acts on the outer periphery of the second bushing 32.

[0044] In the above embodiment, the first fastener 41 applies a preload to the outer periphery of the first bushing 31, which causes the first bushing 31 to undergo a certain elastic deformation, thereby squeezing the contact surface between the first bushing 31 and the first bearing 21. This effectively eliminates the play inside the first bearing 21 and the play when the first bearing 21 and the bearing housing 1 are indirectly fitted through the first bushing 31, thus preventing the shaft from deviating from its axis due to the play at the first bearing 21 and ensuring stable rotation of the shaft supported by the first bearing 21. Simultaneously, the second fastener 42 applies a force to the outer periphery of the second bushing 32, which eliminates the play inside the second bearing 22 and the play when the second bearing 22 and the bearing housing 1 are indirectly fitted through the second bushing 32, thus preventing the shaft from deviating from its axis at the second bearing 22. The opposing preload provided by the second fastener 42 and the first fastener 41 work together to make the entire shaft more evenly stressed under the support of the two bearings, ensuring stable rotation of the shaft in the entire bearing mechanism and preventing unstable rotation caused by localized gaps.

[0045] In some embodiments, see Figures 7 to 9The first fastener 41 includes a first fastening component 411 and a second fastening component 412, and the second fastener 42 includes a third fastening component 421 and a fourth fastening component 422. The first fastening component 411 and the third fastening component 421 act on the outer peripheral side of the first bushing 31 and fasten in opposite directions, while the second fastening component 412 and the fourth fastening component 422 act on the outer peripheral side of the second bushing 32 and fasten in opposite directions.

[0046] In the above embodiment, the first fastening component 411 and the third fastening component 421 apply forces to the first bushing 31 from two opposite directions, which can make the first bushing 31 be subjected to uniform and stable compression in the radial direction. This more effectively eliminates the play that exists when the first bearing 21 and the bearing housing 1 are indirectly fitted through the first bushing 31, and also ensures a tighter contact between the first bushing 31 and the first bearing 21, improving the stability and accuracy of the transmission. On the other hand, the fastening forces provided by the first fastening component 411 and the third fastening component 421 in opposite directions are balanced with each other, which can avoid the displacement or deformation caused by uneven force on the first bushing 31 due to unilateral fastening, ensuring the accuracy of the first bushing 31 in the installation position, and thus ensuring the stable rotation of the shaft at the first bearing 21.

[0047] The second fastening component 412 and the fourth fastening component 422 apply forces to the second bushing 32 from opposite directions, effectively eliminating the radial clearance when the second bearing 22 and the bearing housing 1 are indirectly fitted through the second bushing 32. This ensures a tight fit between the second bushing 32 and the second bearing 22, improving the stability and accuracy of the transmission. Simultaneously, the opposing fastening forces balance each other, preventing the second bushing 32 from shifting or deforming due to uneven force distribution, ensuring the accuracy of the second bushing 32's installation position, and guaranteeing stable rotation of the shaft at the second bearing 22.

[0048] Furthermore, the fastening directions of the first fastening component 411 and the third fastening component 421 are along the first diameter extension direction, and the fastening directions of the second fastening component 412 and the fourth fastening component 422 are along the second diameter extension direction. The first diameter extension direction and the second diameter extension direction can be parallel to enhance the fastening effect of the fastening structure 4 on the outer periphery of the bushing structure 3 along the diameter extension direction; or the first diameter extension direction and the second diameter extension direction can be perpendicular to enhance the balance of the fastening structure 4 acting on the outer periphery of the bushing structure 3 in two mutually perpendicular directions.

[0049] In some embodiments, see Figure 5 and Figure 8The bearing housing 1 is provided with a first locking hole 11 and a second locking hole 12 that are connected to the mounting cavity. The first fastener 41 is assembled to the first locking hole 11 and abuts against the outer peripheral side of the bushing structure 3. The second fastener 42 is assembled to the second locking hole 12 and abuts against the outer peripheral side of the bushing structure 3.

[0050] In the above embodiments, the first locking hole 11 and the second locking hole 12 provide installation channels for the first fastener 41 and the second fastener 42, respectively, so that the fasteners can smoothly enter the bearing seat 1 and abut against the bushing structure 3, which facilitates the accurate installation of the fasteners into the fastening position during the assembly process and improves the efficiency and accuracy of the assembly.

[0051] See Figure 8 After the first fastener 41 is assembled into the first locking hole 11, it abuts against the outer periphery of the bushing structure 3, thereby applying pressure to the bushing structure 3 and eliminating the radial clearance of the bearing mechanism. This prevents the shaft from shaking and vibrating due to the clearance during rotation, improving the rotational accuracy and stability of the shaft. Moreover, the assembly of the first fastener 41 with the first locking hole 11 and its abutment against the bushing structure 3 enhances the connection stability between the bearing housing 1, the bushing structure 3, and the bearing structure 2, enabling the entire bearing mechanism to maintain structural integrity when subjected to various external forces and preventing failures and damage caused by loosening.

[0052] Meanwhile, after the second fastener 42 is assembled into the second locking hole 12, it abuts against the outer periphery of the bushing structure 3. The first fastener 41 and the second fastener 42 work together to fasten the bushing structure 3 from opposite directions. This not only eliminates the radial clearance of the entire bearing mechanism, but also avoids the eccentricity of the bearing and the shaft, ensuring the stability of the shaft in the axial direction.

[0053] In some embodiments, see Figure 6 and Figure 9 The outer periphery of the bushing structure 3 has a first limiting groove 33 and a second limiting groove 34. The fastening end of the first fastener 41 is fitted into the first limiting groove 33, and the fastening end of the second fastener 42 is fitted into the second limiting groove 34.

[0054] In the above embodiment, the end of the first fastener 41 furthest from the bushing structure 3 can be the operating end of the first fastener 41, so that the first fastener 41 can be tightened by a tool; the end of the first fastener 41 closest to the bushing structure 3 can be the fastening end of the first fastener 41, which is embedded in the first limiting groove 33, so that the first fastener 41 can be accurately fixed on the bushing structure 3. During the rotation of the shaft, the limiting groove 33 ensures the stability of the bushing structure 3 and the bearing seat 1 by limiting the first fastener 41, and prevents the first fastener 41 from loosening or shifting when subjected to external forces such as vibration and impact.

[0055] Similarly, the end of the second fastener 42 furthest from the bushing structure 3 can be the operating end of the second fastener 42, facilitating tightening operations using tools; the end of the second fastener 42 closest to the bushing structure 3 can be the fastening end of the second fastener 42, which is embedded in the second limiting groove 34. The second fastener 42 can work in conjunction with the first fastener 41 to tighten the bushing structure 3 from different positions, ensuring the structural integrity of the bushing structure 3 and the bearing housing 1.

[0056] In one embodiment, the bearing mechanism 100 includes a locking nut 5 and a dustproof retaining ring 6. The locking nut 5 is connected to the rotating shaft and stops on the outside of the bearing structure 2, positioning and fixing the bearing structure 2 in the axial direction of the rotating shaft. By tightening the locking nut 5, an axial preload is generated to prevent the bearing structure 2 from axially shifting during the rotation of the rotating shaft, ensuring that the bearing maintains a stable axial position during normal operation, thereby improving the rotational accuracy and stability of the rotating shaft. Moreover, the locking nut 5 makes the installation and disassembly of the bearing structure 2 more convenient. During installation, the bearing structure 2 is first fitted onto the rotating shaft, and then the locking nut 5 is tightened to fix the bearing structure 2; during disassembly, the locking nut 5 is simply loosened to remove the bearing structure 2 from the rotating shaft, facilitating the maintenance, replacement, and repair of the bearing, and improving the ease of use and maintainability of the equipment. The dustproof retainer ring 6 is fastened to the outside of the bearing housing 1, bearing structure 2, and bushing structure 3. It prevents external dust, impurities, moisture, etc., from entering the gap between the bearing housing 1, bearing structure 2, and bushing structure 3, ensuring the normal operation of the bearing. In addition, the dustproof retainer ring 6 also has a sealing function, preventing the leakage of lubricating grease inside the bearing and maintaining the lubrication state inside the bearing.

[0057] See Figure 1 and Figure 2 This application provides a rolling mill device, which includes a rotating mechanism 200 and the aforementioned bearing mechanism 100; The rotating mechanism 200 is rotatably connected to the bearing mechanism 100.

[0058] In the above embodiment, the first fastener 41 and the second fastener 42 act on the bushing structure 3 in opposite directions, which can ensure that the bearing structure 2 and the rotating shaft are subjected to balanced forces, so that the bearing structure 2 and the rotating shaft of the rotating mechanism 200 can be kept in the center position, avoiding the problem of the rotating mechanism 200 deviating from the axis due to the gap during rotation, thereby ensuring the smooth rotation of the rotating mechanism 200, reducing the vibration and noise generated by the rotating mechanism 200 during rotation, and improving the service life of the bearing structure 100 and the rotating mechanism 200.

[0059] In some embodiments, the rotating mechanism 200 includes a plurality of rollers 201 arranged side by side and a rotating shaft 202 located at the end of the rollers 201, and the bearing mechanism 100 includes a plurality of first bearings 21 and second bearings 22, with the rotating shaft 202 correspondingly assembled in a set of first bearings 21 and second bearings 22.

[0060] In the above embodiments, the roller 201 may be provided with a rotating shaft 202 at one end, and the bearing mechanism 100 is distributed on one side of the roller 201 arranged side by side to simplify the structure of the roller device; or, the roller 201 may be provided with rotating shafts 202 at both ends, and the bearing mechanism 100 may be distributed on both sides of the roller 201 arranged side by side to facilitate the stability of the rotation mechanism 200.

[0061] Multiple rollers 201 are arranged side by side, with a certain gap between adjacent rollers 201. During the roll forming process of the rollers 201, fluctuations in the bearing gap are transmitted to the rollers 201, affecting the gap accuracy for stable operation between adjacent rollers 201. The bearing mechanism 100 provided in this embodiment of the application enables the bearing structure 2 and the rotating shaft to be kept in the center position, avoiding the problem of wobbling off-axis caused by gap during the rotation of the rotating mechanism with the rotating shaft. By eliminating the radial gap of the bearing, abrupt changes in the gap between adjacent rollers 201 are avoided, preventing changes in the gap between adjacent rollers 201 from affecting the film forming accuracy and maintaining the stable operation of the roller device.

[0062] In one embodiment, the rolling mill device is used in the dry film formation process of the lithium battery industry. Specifically, it adopts a parallel arrangement of multiple rolling mills 201. One side of the multiple rolling mills 201 is driven to rotate by a motor. The rotating multiple rolling mills 201 roll and press the powder falling into the biting area of ​​the rolling mills 201 to form a film. The film is then sheared by adjacent rolling mills 201 with speed differences and transferred to the surface of the next rolling mill 201, realizing multiple thinning and transfer of the film. In this embodiment, the bearings of the bearing mechanism 100 are preloaded during installation to eliminate bearing clearance, avoiding sudden changes in the roller clearance caused by changes in the roller pressure during operation, thus improving the product quality of dry film formation and maintaining the stable operation of the rolling mill device.

[0063] In one embodiment, when the bearing mechanism 100 includes multiple sets of first bearings 21 and second bearings 22, the bearing housing can be a single bearing housing with multiple mounting cavities. Each mounting cavity is provided with a corresponding set of first bearings 21 and second bearings 22 to ensure the structural integrity of the bearing mechanism 100. Alternatively, the bearing mechanism 100 can include multiple bearing housings, with multiple bearing housings corresponding to multiple sets of first bearings 21 and second bearings 22 to avoid the impact of assembly between different sets of first bearings 21 and second bearings 22.

[0064] This application provides a dry film forming apparatus, which includes the aforementioned bearing mechanism 100; or, This includes the aforementioned rolling mill assembly.

[0065] In the above embodiment, the multiple rollers 201 of the rotating mechanism 200 are arranged side by side. One side of the roller 201 is driven by a motor to rotate. The rotating roller 201 rolls the powder falling into the biting area of ​​the adjacent roller 201 to form a film, and the adjacent rollers 201 with speed difference shear the film and transfer it to the next roller surface, so as to realize the dry coating film formation, thinning, and composite of powder.

[0066] There is a certain gap between adjacent rolls 201. During the roll forming process of the rolls 201, fluctuations in the bearing gap will be transmitted to the rolls 201, affecting the gap accuracy for stable operation between adjacent rolls 201. The bearing mechanism 100 provided in this embodiment of the application can keep the bearing structure 2 and the rotating shaft in the center position, avoiding the problem of wobbling due to gaps in the rotating mechanism with the rotating shaft during rotation. By eliminating the radial gap of the bearing, abrupt changes in the gap between adjacent rolls 201 are avoided, preventing changes in the gap between adjacent rolls 201 from affecting the film forming accuracy and maintaining the stable operation of the dry film forming device.

[0067] This application provides a battery manufacturing apparatus, which includes the aforementioned bearing mechanism 100; or, Including the aforementioned rolling mill assembly; or, This includes the aforementioned dry film-forming apparatus.

[0068] While specific embodiments of this application have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of this application. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of this application. The scope of this application is defined by the appended claims.

Claims

1. A bearing mechanism characterized by, The application relates to a bearing seat (1) with a mounting cavity, a bearing structure (2) arranged in the mounting cavity and used for penetrating a rotating shaft, a bushing structure (3) arranged between the bearing structure (2) and the bearing seat (1), a fastening structure (4) comprising a first fastener (41) and a second fastener (42), the first fastener (41) and the second fastener (42) are used for the outer circumferential side of the bushing structure (3) in a radial direction, and the fastening direction of the first fastener (41) is opposite to that of the second fastener (42). The bearing structure (2) comprises a first bearing (21), and the bushing structure (3) comprises a first bushing (31), the first bearing (21) is arranged in the mounting cavity, and the first bushing (31) is arranged between the first bearing (21) and the bearing seat (1). The first fastener (41) and the second fastener (42) are used for the outer circumferential side of the first bushing (31). The bearing structure (2) comprises a first bearing (21) and a second bearing (22), the first bearing (21) and the second bearing (22) are coaxially arranged in the mounting cavity and used for penetrating a rotating shaft; The bushing structure (3) comprises a first bushing (31) and a second bushing (32), the first bushing (31) is arranged between the first bearing (21) and the bearing seat (1), and the second bushing (32) is arranged between the second bearing (22) and the bearing seat (1); 2. The bearing mechanism of claim 1, wherein The first fastener (41) is used for the outer circumferential side of at least one of the first bushing (31) and the second bushing (32), and the second fastener (42) is used for the outer circumferential side of at least one of the first bushing (31) and the second bushing (32). The first fastener (41) is used for the outer circumferential side of the first bushing (31), and the second fastener (42) is used for the outer circumferential side of the second bushing (32).

3. The bearing mechanism of claim 1, wherein The first fastener (41) comprises a first fastening component (411) and a second fastening component (412), the second fastener (42) comprises a third fastening component (421) and a fourth fastening component (422), the first fastening component (411) and the third fastening component (421) are used for the outer circumferential side of the first bushing (31) and have opposite fastening directions, and the second fastening component (412) and the fourth fastening component (422) are used for the outer circumferential side of the second bushing (32) and have opposite fastening directions. The bearing seat (1) is provided with a first locking hole (11) and a second locking hole (12) communicated to the mounting cavity, the first fastener (41) is assembled to the first locking hole (11) and abuts against the outer circumferential side of the bushing structure (3), and the second fastener (42) is assembled to the second locking hole (12) and abuts against the outer circumferential side of the bushing structure (3). ​ 4. The bearing mechanism of claim 3, wherein ​ 5. The bearing mechanism of claim 3, wherein ​ 6. The bearing mechanism of claim 1, wherein ​ 7. The bearing mechanism of claim 6, wherein The outer periphery of the bush structure (3) has a first limiting groove (33) and a second limiting groove (34), the fastening end of the first fastener (41) is embeddedly matched with the first limiting groove (33), and the fastening end of the second fastener (42) is embeddedly matched with the second limiting groove (34).

8. A roll arrangement, characterized by The bearing mechanism (100) according to any one of claims 1-7; and The rotating mechanism (200) is rotatably connected to the bearing mechanism (100).

9. The roll arrangement of claim 8, wherein The rotating mechanism (200) comprises a plurality of rollers (201) arranged side by side and a rotating shaft (202) located at the end of the roller (201), the bearing mechanism (100) comprises a plurality of groups of the first bearing (21) and the second bearing (22), and the rotating shaft (202) is correspondingly fitted into one group of the first bearing (21) and the second bearing (22).

10. A dry film forming apparatus characterized by comprising: The bearing mechanism (100) according to any one of claims 1-7; or The roller device according to claim 8 or 9.

11. A battery manufacturing apparatus, characterized by comprising: The bearing mechanism (100) according to any one of claims 1-7; or The roller device according to claim 8 or 9; or The dry film forming device according to claim 10.

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