Bearing clearance adjusting mechanism
By setting the bearing seat assembly at both ends of the rolling assembly and using the misalignment of the driving assembly and the conducting assembly, the problem that the bearing gap in the series rolling assembly cannot be effectively eliminated is solved, and high-precision adjustment of the bearing and consistency of the thickness of the pole sheet are achieved.
Patent Information
- Application Number
- CN202420470729.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-11
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-03-11
AI Technical Summary
The continuous rolling assembly in the form of a series arrangement may form an interactive force between adjacent rolls, counteracting the preloading force of the screws and failing to effectively eliminate the radial clearance of the bearing.
A bearing gap adjustment mechanism is designed, by providing a first bearing seat assembly and a second bearing seat assembly at both ends of the first roll and the second roll, the first driving assembly acts on the first bearing seat assembly on the first roll, and dislocates the conducting assembly to transmit force to eliminate the radial clearance of the bearing.
It effectively eliminates the radial clearance of the bearing, improves the rotation accuracy, ensures the consistency of the thickness of the pole sheet roller, and reduces the twisting deformation of the roll, while simplifying the roller seam adjustment process.
Smart Images
Figure CN222931553U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lithium battery manufacturing, and more specifically, to a bearing clearance adjusting mechanism. Background Art
[0002] Most dry rolling technologies use solid raw materials to roll into electrode sheets. Compared with the traditional wet process, the dry process reduces the process time and saves the huge investment required for coating equipment. During the dry rolling process, the thickness requirement of the electrode sheet is below 150 microns, and the thickness deviation is within 5 microns. To ensure the thickness requirement: on the one hand, by controlling the machining accuracy of the roll surface, after eliminating the stress of the heating roll, secondary or tertiary machining is carried out to ensure; on the other hand, by eliminating the radial clearance of the roll bearing to achieve the purpose of controlling the radial runout of the roll.
[0003] Currently, to eliminate the bearing clearance, a structure of installing a cylindrical roller bearing and a deep groove ball bearing in the roll bearing housing is adopted. The cylindrical roller bearing is in interference fit with the bearing housing. The inner ring of the deep groove ball bearing is normally fitted with the support section of the roll shaft, but the outer ring does not contact the inner hole of the bearing housing. At the same time, two screws installed on the bearing housing are used to support the outer ring of the deep groove ball bearing. At this time, due to the pre-tightening force formed by the screws supporting the deep groove ball bearing on the installation section of the deep groove ball bearing of the roll shaft, the radial clearance formed by the manufacturing accuracy of a single bearing is eliminated.
[0004] However, the above method is only suitable for rolls installed in pairs. The continuous rolling assembly in a series arrangement form will form an interaction force between adjacent rolls, so it may offset the pre-tightening force of the screws and cannot achieve the pre-tightening effect. Summary of the Utility Model
[0005] The utility model provides a bearing clearance adjusting mechanism to solve the problems existing in the above background art.
[0006] The technical solution adopted by the utility model is:
[0007] A bearing clearance adjustment mechanism includes a roll assembly, a first drive assembly, and a conduction assembly for force transmission; the roll assembly includes at least a first roll and a second roll, the first roll and the second roll are arranged opposite to each other, and there is a gap between the first roll and the second roll to form a roll pressing channel; first bearing seat assemblies and second bearing seat assemblies are arranged at both ends of the first roll and the second roll, and the first bearing seat assemblies and second bearing seat assemblies on the first roll and the first bearing seat assemblies and second bearing seat assemblies on the second roll are arranged opposite to each other; the first drive assembly is drivingly connected to the side of the first bearing seat assembly on the first roll facing away from the roll pressing channel to drive the first roll to approach or move away from the second roll; the conduction assembly is arranged between the first roll and the second roll and is respectively in contact with the second bearing seat assembly on the first roll and the second bearing seat assembly on the second roll.
[0008] In some embodiments of the present application, the roll assembly further includes a third roll, and there is a gap between the third roll and the second roll to form a roll pressing channel; first bearing seat assemblies and second bearing seat assemblies are respectively arranged at both ends of the third roll, and the first bearing seat assemblies and second bearing seat assemblies on the third roll and the first bearing seat assemblies and second bearing seat assemblies on the second roll are arranged opposite to each other; another conduction assembly is arranged between the third roll and the second roll and is respectively in contact with the first bearing seat assembly on the third roll and the first bearing seat assembly on the second roll.
[0009] In some embodiments of the present application, the drive assembly is a lifting device.
[0010] In some embodiments of the present application, both the first bearing seat assembly and the second bearing seat assembly include a bearing seat, and a bearing is arranged inside the bearing seat.
[0011] In some embodiments of the present application, the first bearing seat assembly and the second bearing seat assembly further include a dust-proof ring.
[0012] In some embodiments of the present application, a second drive assembly is further included, and the second drive assembly is drivingly connected to the roll assembly to drive the roll assembly to rotate.
[0013] In some embodiments of the present application, a coupling is further included, and the second drive assembly is connected to the roll assembly through the coupling.
[0014] In some embodiments of the present application, a mounting frame is further included, an installation part is arranged inside the mounting frame, and the roll assembly is fixedly arranged inside the installation part.
[0015] In some embodiments of the present application, limiting portions for limiting the first bearing seat assembly or the second bearing seat assembly are provided on both sides of the mounting bracket, and the roll assembly enters the mounting portion through the limiting portions.
[0016] In some embodiments of the present application, a heating assembly is further provided on the roll assembly to heat the roll assembly.
[0017] Compared with the prior art, in the present utility model, a first bearing seat assembly and a second bearing seat assembly are respectively provided at both ends of the first roll and the second roll. The first driving assembly acts on the first bearing seat assembly on the first roll, and the transmission mechanism is arranged between the second bearing seat assembly of the first roll and the second bearing seat assembly of the second roll, so that the first driving assembly and the transmission assembly are arranged in a staggered manner. The forces received by the first roll and the second roll are also transmitted in a staggered manner. In this arrangement, the radial clearance of the bearing is eliminated, the rotational accuracy is improved, and the consistency of the pole piece rolling thickness is further ensured. At the same time, due to the forces at both ends of the first roll and the second roll, the function of the bending cylinder is realized, and the torsional deformation of the first roll and the second roll is reduced. Since the first driving assembly is provided, the roll gap between the first roll and the second roll can also be adjusted, and the adjustment process is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 is a schematic structural diagram of the bearing clearance adjusting mechanism in an embodiment of the present application.
[0019] Figure 2 is a schematic structural diagram of the first roll in an embodiment of the present application.
[0020] Figure 3 is a schematic structural diagram of one side of the transmission assembly in an embodiment of the present application.
[0021] Figure 4 is a force analysis diagram of the first roll and the second roll in an embodiment of the present application.
[0022] DESCRIPTION OF THE REFERENCE NUMERALS
[0023] 1-Roll assembly; 101-First roll; 102-Second roll; 103-Third roll;
[0024] 2-First driving assembly; 3-Transmission assembly; 4-First bearing seat assembly; 5-Second bearing seat assembly; 6-Second driving assembly; 7-Coupling; 8-Mounting bracket; 9-Heating assembly. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0025] Embodiment 1
[0026] This embodiment provides a bearing clearance adjusting mechanism. Please refer to Figures 1-4As shown in the figure, a bearing clearance adjusting mechanism includes a roll assembly, a first driving assembly 2, and a conduction assembly 3 for force conduction; the roll assembly includes at least a first roll 101 and a second roll 102, the first roll 101 and the second roll 102 are arranged opposite to each other, and there is a gap between the first roll 101 and the second roll 102 to form a rolling channel; both ends of the first roll 101 and the second roll 102 are provided with a first bearing seat assembly 4 and a second bearing seat assembly 5, and the first bearing seat assembly 4 and the second bearing seat assembly 5 on the first roll 101 and the first bearing seat assembly 4 and the second bearing seat assembly 5 on the second roll 102 are arranged opposite to each other; the first bearing seat assembly 4 on the first roll 101 is drivingly connected to the first driving assembly 2 on the side facing away from the rolling channel to drive the first roll 101 to approach or move away from the second roll 102; the conduction assembly 3 is arranged between the first roll 101 and the second roll 102 and is respectively in contact with the second bearing seat assembly 5 on the first roll 101 and the second bearing seat assembly 5 on the second roll 102.
[0027] Specifically, the roller assembly is used to roll the electrode sheet. It includes at least two rollers. A rolling channel is provided between the first roller 101 and the second roller 102. The raw material is rolled through the rolling channel to form the electrode sheet. First bearing seat assemblies 4 and second bearing seat assemblies are provided at the ends of the first roller 101 and the second roller 102. The roller assembly can rotate through the first bearing seat assemblies 4 and the second bearing seat assemblies 5. For the convenience of description, one end of the first roller 101 and the second roller 102 is taken as an example, and the setting method of the other end is similar. The bearing seat assembly close to the roller body is the first bearing seat assembly 4, and the other bearing seat is the second bearing seat assembly. It can also be that the end far from the roller body is the first bearing seat assembly 4, and the end close to the roller body is the second bearing seat assembly 5. A first driving assembly 2 is drivingly connected to the first bearing seat assembly 4 on the first roller 101. The first driving assembly 2 can drive the first roller 101 to move relative to the second roller 102. Among them, the first driving assembly 2 can be a hydraulic cylinder, a pneumatic cylinder, etc. This embodiment does not make specific limitations, as long as it can drive the first roller 101 to move relative to the second roller 102. In this embodiment, the first driving assembly 2 is a hydraulic cylinder. The hydraulic cylinder has a simple structure, reliable operation, and a long service life. The driving end of the hydraulic cylinder is drivingly connected to the first bearing seat assembly 4 on the first roller 101. The conduction assembly 3 is used to transmit the acting force. One end of it abuts against the second bearing seat assembly 5 of the first roller 101, and the other end abuts against the second bearing seat assembly 5 of the second roller 102, and is misaligned with the position where the first driving assembly 2 is arranged. It can also be set that the first side of the first ends of the first roller and the second roller close to the roller body is the first bearing seat assembly, and the bearing seat far from the roller body is the second bearing seat assembly. The second side of the first ends of the first roller and the second roller close to the roller body is the second bearing seat assembly, and the other bearing seat is the first bearing seat assembly. The specific design method is not limited again, as long as the first driving assembly and the conduction assembly are misaligned.
[0028] Please refer to Figure 4, the second roll 102 is relatively fixed. Taking the positive direction of x, when the hydraulic cylinder pushes forward to generate a thrust F on the first bearing block assembly 4 on the first roll 101, at this time, both the first bearing block assembly 4 and the second bearing block assembly 5 on the first roll 101 are subjected to the action of F and along the negative direction of x. The acting force F2 generated by the second roll 102 on the first roll 101 is along the positive direction of x. Because there is a conduction assembly 3, the force F1 generated by the second bearing block assembly 5 on the second roll 102 on the second bearing block assembly 5 on the first roll 101 is along the positive direction of the x-axis. Because under the action of F, F1, and F2, the system remains in a balanced state, and the direction of F1 in the first roll 101 system is always along the positive x-direction, and the direction of F is always along the negative x-direction. Therefore, under the action of these three forces, the inner ring of the bearing of the first bearing block assembly 4 is close to the right side of the outer ring of the first bearing, and the inner ring of the bearing of the second bearing block assembly 5 will be close to the left side of the outer ring of the second bearing under the action of the force, forming a clamping effect on the axis of the first roll 101, thereby eliminating the bearing clearance.
[0029] By respectively arranging the first bearing block assembly and the second bearing block assembly at both ends of the first roll 101 and the second roll 102, the first driving assembly 2 acts on the first bearing block assembly 4 on the first roll 101, and the conduction mechanism is arranged between the second bearing block assembly 5 on the first roll 101 and the second bearing block assembly 5 on the second roll 102, so that the first driving assembly 2 and the conduction assembly are arranged in a staggered manner, and the forces received by the first roll 101 and the second roll 102 are also transmitted in a staggered manner. With this arrangement method, the radial clearance of the bearing is eliminated, the rotational accuracy is improved, and the consistency of the thickness of the pole piece roll pressing is further ensured; at the same time, due to the force at both ends of the first roll 101 and the second roll 102, the function of the bending cylinder is realized, and the torsional deformation of the first roll 101 and the second roll 102 is reduced; due to the setting of the first driving assembly 2, the roll gap between the first roll 101 and the second roll 102 can also be adjusted, and the adjustment process is simple and convenient.
[0030] In some embodiments of the present application, the roller assembly further includes a third roller 103, and there is a gap between the third roller 103 and the second roller 102 to form a rolling channel; the first bearing seat assembly 4 and the second bearing seat assembly 5 are respectively arranged at both ends of the third roller 103, and the first bearing seat assembly 4 and the second bearing seat assembly 5 on the third roller 103 are arranged opposite to the first bearing seat assembly 4 and the second bearing seat assembly 5 on the second roller 102; another conductive assembly 3 is arranged between the third roller 103 and the second roller 102, and abuts against the first bearing seat assembly 4 on the third roller 103 and the first bearing seat assembly 4 on the second roller 102. Specifically, the arrangement of the first bearing seat assembly 4 and the second bearing seat assembly 5 on the third roller 103 is similar to that of the first roller 101 and the second roller 102, and the third roller 103 is relatively fixed, and the force of the hydraulic cylinder is finally offset at the third roller 103, so as to adjust the gap between the bearings of multiple rollers arranged in series.
[0031] It can be understood that the roller assembly can also include a fourth roller, a fifth roller, etc., and their number is not specifically limited here. The arrangement of the first bearing seat assembly 4 and the second bearing seat assembly 5 at both ends is similar to that of the first roller 101 and the second roller 102. It is only necessary to ensure that the two adjacent conduction components 3 are staggered so that the thrust F generated by the hydraulic cylinder is staggered.
[0032] In the specific working process of the multi-roller, the hydraulic oil is pressed into the rodless cavity of the hydraulic cylinder, so that the rod side of the hydraulic cylinder extends out, and the hydraulic pressure applied by the rod side acts on the first bearing seat assembly 4 and the second bearing seat assembly 5 of the first roller 101. The first bearing seat assembly 4 and the second bearing seat assembly 5 are rigid components of the first roller 101 system, so the hydraulic pressure applied by the rod side can be regarded as directly acting on the first roller 101. Then, the force is dislocated and transmitted to the last roller through the first bearing seat assembly 4, the second bearing seat assembly 5 and the transmission assembly 3 on the first roller 101. If there are five rollers in total, the last roller is the fifth roller. If there are six rollers, the last roller is the sixth roller, and so on, which will not be repeated here. And the last roller is relatively fixed to offset the thrust of the hydraulic cylinder. At this point, the force transmission of the hydraulic pressure between the roller systems is completed. Due to the existence of the hydraulic pressure, the surfaces of each roller fit each other, and the positive and negative raw materials of the battery continuously interspersed on the surfaces of each roller are squeezed to form a pole piece.
[0033] In some embodiments of the present application, the transmission component is a lifting device. The lifting device is an electric hydraulic jack, which can transmit the hydraulic pressure well. At the same time, by controlling the electric hydraulic jack, the roller gap between the two rollers can be adjusted at any time, making the adjustment process more intelligent, convenient and fast.
[0034] Further, both the first bearing block assembly 4 and the second bearing block assembly 5 include bearing blocks, and bearings are arranged inside the bearing blocks. The bearing block assembly consists of rollers or ball bearings, bearing blocks, etc. The first bearing block assembly 4 and the second bearing block assembly 5 further include dust-proof rings. The dust-proof rings can prevent dust from entering the first bearing block and the second bearing block, and prevent the rotation of the first roll 101 from being affected by dust.
[0035] Embodiment 2
[0036] This embodiment is similar to Embodiment 1. As Figure 2 shown, the difference is that further, a second driving assembly 6 is further included. The second driving assembly 6 is in transmission connection with the roll assembly to drive the roll assembly to rotate. The second driving assembly 6 is arranged at one end of the roll assembly, that is, the ends of the first roll 101 and the second roll 102, to drive the first roll 101 and the second roll 102 to rotate, so as to perform pole piece rolling. Among them, the second driving assembly 6 is a driving motor. The second driving assembly 6 is connected to the roll assembly through a coupling 7. The coupling 7 is arranged between the driving motor and the first roll 101 and the second roll 102 to connect the first roll 101 and the second roll 102. The coupling 7 is a universal joint coupling 7. One end of the driving motor can also be connected to a speed reducer to control its rotation speed.
[0037] Further, a heating assembly 9 is further arranged on the roll assembly to heat the roll assembly. The heating assembly 9 is arranged at the other end of the first roll 101 and the second roll 102 facing away from the second driving assembly 6. The heating assembly 9 includes a hot oil pipe joint and an externally arranged heating device. The roll assembly is heated through the heating assembly 9 to improve the efficiency of pole piece rolling.
[0038] Embodiment 3
[0039] Embodiment 3 is similar to Embodiment 1. The difference is that as Figure 1 shown, an installation frame 8 is further included. An installation part is arranged inside the installation frame 8, and the roll assembly is fixedly arranged inside the installation part. During installation, the roll is pushed into the installation part through the opening on the side for installation, improving the stability of the equipment.
[0040] Further, limiting parts for limiting the first bearing block assembly 4 or the second bearing block assembly 5 are arranged on both sides of the installation frame 8. The contact surfaces between the bearing block mounting surfaces on both sides of the roll system and the inner side of the housing keep good contact. Grooves are opened on the upper and lower sides of the bearing block, and the bearing block guide plate is inserted into the groove and fixedly connected to the housing, restricting the freedom of lateral movement of each roll roll system and only retaining the freedom of longitudinal movement of each roll roll system along the housing, preventing the roll assembly from moving during operation.
[0041] The accompanying drawings are only for illustrative purposes and should not be construed as limiting the present patent. To better illustrate the embodiments, some components in the drawings may be omitted, enlarged or reduced, which do not represent the dimensions of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. The positional relationships described in the drawings are only for illustrative purposes and should not be construed as limiting the present patent.
[0042] In the accompanying drawings of the embodiments of the present utility model, the same or similar reference numerals correspond to the same or similar components. In the description of the present utility model, it should be understood that if there are terms such as "upper", "lower", "left", "right", "long", "short", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and should not be construed as indicating or implying relative importance. "Vertical" is not strictly vertical, but within the allowable error range. "Parallel" is not strictly parallel, but within the allowable error range.
[0043] In the description of the present application, it should also be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, the specific relationships they represent can be fixed connection, detachable connection, or integral connection; they can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, they can understand the specific meanings of the above terms in the present application according to specific circumstances.
[0044] Obviously, the above embodiments of the present utility model are only examples for clearly explaining the present utility model, rather than limiting the implementation manners of the present utility model. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included in the protection scope of the claims of the present utility model.
Claims
1. A bearing clearance adjustment mechanism, characterized in that: It includes a roller assembly, a first driving assembly and a conducting assembly for force conduction; The roller assembly at least comprises a first roller and a second roller, the first roller and the second roller are arranged in parallel, and there is a gap between the first roller and the second roller to form a rolling channel; Both ends of the first roller and the second roller are provided with a first bearing seat assembly and a second bearing seat assembly, and the first bearing seat assembly and the second bearing seat assembly on the first roller and the first bearing seat assembly and the second bearing seat assembly on the second roller are arranged opposite to each other; The first bearing seat assembly on the first roller is transmission-connected to the first driving assembly on the side facing away from the rolling channel, so as to drive the first roller to approach or move away from the second roller; The conduction component is disposed between the first roller and the second roller, and is respectively in contact with the second bearing seat component on the first roller and the second bearing seat component on the second roller.
2. The bearing clearance adjustment mechanism according to claim 1, characterized in that: The roller assembly further comprises a third roller, and there is a gap between the third roller and the second roller to form a rolling channel; A first bearing seat assembly and a second bearing seat assembly are respectively arranged at both ends of the third roller, and the first bearing seat assembly and the second bearing seat assembly on the third roller are arranged opposite to the first bearing seat assembly and the second bearing seat assembly on the second roller; The other conduction component is arranged between the third roller and the second roller, and is respectively abutted against the first bearing seat component on the third roller and the first bearing seat component on the second roller.
3. The bearing clearance adjustment mechanism according to claim 1, characterized in that: The conducting component is a lifting device.
4. The bearing clearance adjustment mechanism according to claim 1, characterized in that: The first bearing seat assembly and the second bearing seat assembly both include a bearing seat, and a bearing is disposed inside the bearing seat.
5. The bearing clearance adjustment mechanism according to claim 4, characterized in that: The first bearing seat assembly and the second bearing seat assembly also include dust rings.
6. The bearing clearance adjustment mechanism according to claim 1, characterized in that: It also includes a second driving assembly, which is drivingly connected to the roller assembly to drive the roller assembly to rotate.
7. The bearing clearance adjustment mechanism according to claim 6, characterized in that: It also includes a coupling, and the second drive assembly is connected to the roller assembly through the coupling.
8. The bearing clearance adjustment mechanism according to claim 1, characterized in that: It also includes a mounting frame, wherein a mounting portion is arranged inside the mounting frame, and the roller assembly is fixedly arranged inside the mounting portion.
9. The bearing clearance adjustment mechanism according to claim 8, characterized in that: Limiting parts for limiting the position of the first bearing seat assembly or the second bearing seat assembly are arranged on both sides of the mounting frame.
10. The bearing clearance adjustment mechanism according to claim 1, characterized in that: The roller assembly is also provided with a heating assembly to heat the roller assembly.