Passing roller assembly and unwinder
By using an over-roll assembly connected by an elastic element in the unwinding device, the problem of uneven electrode tension is solved, automatic adjustment of electrode tension is achieved, electrode wrinkling is avoided, and the structure is simple and low in cost.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENGHONG KINETIC ENERGY TECH (TAIZHOU) CO LTD
- Filing Date
- 2025-06-19
- Publication Date
- 2026-07-31
AI Technical Summary
In the existing technology, during the processing of secondary battery electrode sheets, the unwinding device is prone to uneven tension on the left and right sides of the electrode sheets, which leads to wrinkles on the electrode sheets and requires frequent adjustment of the roller position to balance the tension.
The roller assembly is used, and the rollers are radially movable through the elastic element. When the forces at both ends of the roller are inconsistent, the end with greater force is radially displaced to adjust the tension on both sides of the foil. The tension balance is achieved by using the combination structure of the limiting rod and the elastic element.
It effectively adjusts the tension on both sides of the electrode, avoids electrode wrinkling, has a simple structure, is easy to manufacture and install, and reduces usage costs.
Smart Images
Figure CN224577712U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of battery manufacturing technology, specifically a roll-over assembly and a take-up / unroller device. Background Technology
[0002] In the production process of secondary batteries, the electrodes are usually produced in rolls, so electrode processing requires a winding and unwinding device. In the existing technology, the unwinding device often suffers from uneven tension on the left and right sides of the electrode, resulting in wrinkles on the electrode, and the position of the rollers needs to be frequently adjusted to balance the tension on the left and right sides of the electrode. Summary of the Invention
[0003] In order to overcome the defects in the prior art, the present invention provides a roller assembly and a winding and unwinding device. The roller assembly connects the rollers radially through an elastic element. When the two ends of the rollers are subjected to different forces, the end subjected to greater force overcomes the elastic element and undergoes radial displacement, thereby adjusting the tension on both sides of the foil.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a roller assembly, comprising:
[0005] A limiting rod, wherein there are at least two limiting rods arranged side by side;
[0006] A slider, which is slidably connected to the limiting rod;
[0007] A roller, the two ends of which are rotatably connected to a slider;
[0008] An elastic element, one end of which is connected to the slider, and the other end of which is fixed at a preset position.
[0009] The above technical solution connects the rollers radially via an elastic element. When the forces on both ends of the rollers are inconsistent, the end with the greater force overcomes the elastic element and undergoes radial displacement, thereby adjusting the tension on both sides of the foil.
[0010] Furthermore, the limiting rod is positioned perpendicular to the axial direction of the roller. This perpendicularity ensures the roller is fixed in its axial direction, preventing it from shifting along that direction and thus avoiding misalignment between the foil and the roller.
[0011] Furthermore, the elastic element includes a spring, which is sleeved on the limiting rod. One end of the spring is fixedly connected to the slider, and the other end of the spring is fixedly connected to the limiting rod. By sleeved the spring on the limiting rod, the spring force is ensured to be perpendicular to the axial direction of the roller, preventing the spring from generating a force in the same direction as the roller's axial direction, thereby avoiding increased friction between the slider and the limiting rod.
[0012] Furthermore, along the length of the limiting rod, elastic elements are respectively provided on both sides of the slider. The elastic elements are symmetrically arranged on both sides of the slider to ensure that the available adjustment force on both sides of the slider is the same.
[0013] Furthermore, the limiting rod is fitted with a limiting ring, the limiting ring having a threaded hole facing the limiting rod, and a screw installed in the threaded hole. The limiting ring and the spring are connected and fixed together. The initial state of the spring can be adjusted by adjusting the position of the limiting ring.
[0014] Furthermore, the limiting rod is provided with positioning holes, which are spaced apart along the axial direction of the limiting rod. Screws on the limiting ring can be inserted into the positioning holes to ensure the stability of the limiting ring after positioning.
[0015] Furthermore, a bearing is provided on the slider, and the end of the roller is connected and fixed to the inner ring of the bearing. The roller's rotation is achieved through the bearing.
[0016] Furthermore, the device includes a mounting plate with a through hole, and a threaded limit rod. The limit rod is passed through the through hole of the mounting plate and fixed with a nut.
[0017] Furthermore, both ends of the limiting rod are fixedly mounted on the mounting plate.
[0018] A winding and unwinding device using the above-mentioned over-roll assembly includes an unwinder, an over-roll assembly, and a winding machine arranged along the direction of roll movement.
[0019] Based on the above technical solution, the beneficial effects of this utility model are as follows:
[0020] The roller assembly disclosed in this application connects the rollers radially through an elastic element. When the forces at both ends of the rollers are inconsistent, the end with the greater force overcomes the elastic element and undergoes radial displacement, thereby adjusting the tension on both sides of the foil.
[0021] The roller assembly disclosed in this application has a simple structure, is easy to manufacture and install, and has low operating costs.
[0022] To make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description
[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0024] Figure 1 This is a schematic diagram of the overall device structure of the roller assembly in an embodiment of this utility model;
[0025] Figure 2 This is a side view of the mounting plate in an embodiment of this utility model;
[0026] Figure 3 This is a schematic diagram of the limiting ring in an embodiment of this utility model.
[0027] The reference numerals in the above figures are as follows: 1. Mounting plate; 11. Through hole; 2. Limiting rod; 21. Nut; 22. Slider; 23. Limiting ring; 231. Threaded hole; 232. Screw; 24. Spring; 3. Roller. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0029] It should be noted that in the description of this utility model, the terms "first," "second," etc., are used only for descriptive purposes and to distinguish similar objects; there is no order between them, nor should they be construed as indicating or implying relative importance. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0030] Example: This example discloses a roller assembly, including:
[0031] Mounting plate 1, which is fixed in a preset position. (Combined) Figure 1 , 2 As shown, the mounting plate 1 has a through hole 11, and a limiting rod 2 is inserted into the through hole 11. The limiting rod 2 is threaded, and the limiting rod 2 can be fixed on the mounting plate 1 by tightening the nut 21 onto the limiting rod 2.
[0032] In some feasible embodiments, the mounting plate 1 is welded to a preset position or fixed to a preset position by bolts. The preset position can be the frame of a coating machine or other equipment that requires the use of the roller. Each roller assembly includes four mounting plates 1, which are arranged symmetrically in pairs, and a limiting rod 2 is fixed between every two mounting plates 1. The two limiting rods 2 are parallel to each other. The two ends of the limiting rod 2 are respectively provided with threads. The threaded part is inserted into the through hole 11 of the mounting plate 1, and the nut 21 is screwed inward from the end of the limiting rod 2, so that the nut 21 abuts against the mounting plate 1, thereby fixing the limiting rod 2 to the two mounting plates 1.
[0033] A slider 22 is fitted onto the limiting rod 2, and the slider 22 can slide along the length of the limiting rod 2. An elastic element is connected to the slider 22; one end of the elastic element is connected to the slider 22, and the other end of the elastic element is fixed at a preset position. When no external force is applied to the slider 22, the elastic element positions the slider 22 in its initial position.
[0034] A limiting ring 23 is fitted onto the limiting rod 2, combined with Figure 1 , 3 As shown, the limiting ring 23 has a threaded hole 231, and a screw 232 is inserted into the threaded hole 231. Loosening the screw 232 can adjust the position of the limiting ring 23 on the limiting rod 2. After adjusting the position of the limiting ring 23 on the limiting rod 2, tightening the screw 232 can fix the position of the limiting ring 23.
[0035] In some feasible embodiments, the limiting rod 2 is provided with positioning holes, which are spaced apart along the axial direction of the limiting rod 2. The screws 232 on the limiting ring 23 can be inserted into the positioning holes to ensure the stability of the limiting ring 23 after positioning.
[0036] The end of the elastic element facing away from the slider 22 is fixed to the limiting ring 23. By adjusting the position of the limiting ring 23, the initial state of the elastic element and the initial position of the slider 22 can be adjusted.
[0037] In some feasible embodiments, each of the limiting rods 2 is provided with two limiting rings 23, the two limiting rings 23 are respectively located on both sides of the slider 22, and an elastic element is connected between each limiting ring 23 and the slider 22. The elastic element includes a spring 24, and the spring 24 is sleeved on the limiting rod 2.
[0038] A roller 3 is rotatably connected to the slider 22, and the roller 3 can rotate around its own axis.
[0039] In some feasible embodiments, the slider 22 is provided with bearings, and both ends of the roller 3 are respectively connected and fixed to the inner rings of the bearings on the two sliders 22. That is, the roller 3 achieves rotation through the bearings.
[0040] The assembly process of the above-mentioned roller assembly is as follows:
[0041] Fix the mounting plate 1 in the designated position. Each pair of mounting plates 1 forms a set of mounting plates. The two mounting plates 1 in the same set are arranged opposite each other. The two sets of mounting plates are arranged symmetrically.
[0042] The limiting rod 2 is passed sequentially through the through hole 11 of one of the mounting plates 1, the limiting ring 23, the spring 24, the slider 22, the spring 24, the limiting ring 23, and the through hole 11 of the other mounting plate 1, so that the threads at both ends of the limiting rod 2 are respectively inserted into the through holes 11 of the two mounting plates 1. The nuts are then put on the limiting rod 2 from both ends and tightened.
[0043] Install the other limiting rod 2 onto another set of mounting plates in the same manner as described above;
[0044] The two ends of roller 3 are respectively fixed in the bearings of the two sliders 22;
[0045] By adjusting the limiting ring 23 on the limiting rod 2, the roller 3 is made to be perpendicular between the two limiting rods 2.
[0046] The roller assembly assembled using the above method can be used for threading the tape during the electrode coating step in the secondary battery production process. The roller assembly is positioned between the take-up and unwinding mechanisms, and the electrode is tensioned after passing through the roller 3. During the take-up and unwinding process, if the tension on both sides of the electrode is uneven, the forces on both ends of the roller 3 will be inconsistent. In this case, the end with greater force overcomes the elastic force of the spring 24 and undergoes radial displacement to adjust the tension on both sides of the electrode, making the tension on both sides of the electrode tend to be consistent, thereby preventing electrode wrinkles.
[0047] It should be noted that the limiting rod 2 is perpendicular to the axial direction of the roller 3, which can ensure that the roller 3 is fixed in its axial direction and prevent the roller 3 from shifting along its axial direction, thereby preventing misalignment between the electrode sheet and the roller 3.
[0048] This utility model uses specific embodiments to illustrate the principle and implementation of the utility model. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of the utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of the utility model. Therefore, the content of this specification should not be construed as a limitation of the utility model.
Claims
1. A roll-over assembly characterized by, include: A limiting rod, wherein there are at least two limiting rods arranged side by side; A slider, which is slidably connected to the limiting rod; A roller, the two ends of which are rotatably connected to a slider; An elastic element, one end of which is connected to the slider, and the other end of which is fixed at a preset position.
2. The roll assembly of claim 1 wherein, The limiting rod is arranged perpendicular to the axial direction of the roller.
3. The roll assembly of claim 2, wherein, The elastic element includes a spring, which is sleeved on the limiting rod. One end of the spring is fixedly connected to the slider, and the other end of the spring is fixedly connected to the limiting rod.
4. The roll assembly of claim 3, wherein, Along the length of the limiting rod, elastic elements are respectively provided on both sides of the slider.
5. The roll assembly of claim 3 wherein, The limiting rod is fitted with a limiting ring, the limiting ring has a threaded hole facing the limiting rod, and a screw is installed in the threaded hole. The limiting ring and the spring are connected and fixed.
6. The roll assembly of claim 5, wherein, The limiting rod is provided with positioning holes, which are arranged at intervals along the axial direction of the limiting rod.
7. The roll assembly of claim 1 wherein, The slider is equipped with a bearing, and the end of the roller is connected and fixed to the inner ring of the bearing.
8. The roll assembly of claim 1 wherein, The device includes a mounting plate with a through hole, and a limiting rod with a thread. The limiting rod is passed through the through hole of the mounting plate and fixed with a nut.
9. The roll assembly of claim 1 wherein, The two ends of the limiting rod are respectively fixed to the mounting plate.
10. A winding and unwinding device using the roll set according to any one of claims 1 to 9, characterized in that It includes an unwinder, a roll passing assembly, and a winding machine arranged along the direction of roll movement.