A multi-stage adjustable tab extension mechanism

Abstract

A multi-stage adjustable tab extension mechanism belongs to the technical field of lithium / sodium ion battery material manufacturing. The required extension stretching position can be directly adjusted, and the stretching extension is not required to be repeatedly stretched by pasting Teflon on the tab extension area. The combination ring is installed on the required extension area of the extension shaft, the outer side of the combination ring is provided with a pushing assembly for gradually pushing the combination ring to change the diameter, the combination ring comprises a plurality of ring sleeves which are gradually nested, a positioning steel ball is installed on one end of the inner side wall of each ring sleeve, a snap spring is installed on the other end of the inner side wall, a positioning slide is arranged on the outer side wall of each ring sleeve, and the positioning slide is matched with the positioning steel ball. The required extension area can be continuously adjusted by the utility model. The multiple ring sleeves are gradually positioned by the front and rear double limiting forms of the positioning steel ball and the snap spring, the multiple ring sleeves can be sequentially moved forward by using the fixed position force, the multiple ring sleeves can be sequentially moved forward by only shaking the handle, the repeated adjustment is not required, and the adjustment time is shortened.

Description

Technical Field

[0001] This utility model belongs to the field of lithium / sodium ion battery material manufacturing technology, specifically relating to a multi-level adjustable tab extension mechanism. Background Technology

[0002] In existing electrode rolls, the coated area stretches after rolling, while the uncoated tab area does not, resulting in stress lines. This causes foil wrinkles, affecting surface quality and even leading to breakage. Normally, stretching is achieved by repeatedly applying Teflon tape to the stretching roller to change its diameter, which is cumbersome and requires repeated tape application. Utility Model Content

[0003] In order to solve the above problems, this utility model provides a multi-level adjustable tab extension mechanism that can directly adjust the position to be extended without repeatedly applying Teflon to the tab extension area for stretching.

[0004] The technical solution adopted by this utility model is:

[0005] A multi-stage adjustable tab extension mechanism includes a combined ring and a pushing component. The combined ring is installed on the extension shaft in the area to be extended. A pushing component is installed on the outer side of the combined ring for progressively pushing the combined ring to change its diameter. The combined ring includes multiple nested ring sleeves. A positioning steel ball is installed at one end of the inner wall of each ring sleeve, and a retaining spring is installed at the other end of the inner wall for limiting the position. A positioning slide is provided on the outer wall of each ring sleeve, and the positioning slide is matched with the positioning steel ball.

[0006] Compared with the prior art, the present invention has the following advantages:

[0007] This utility model combines a ring, a screw handwheel, and a limiting snap ring to make the area to be extended continuously adjustable. Multiple rings are positioned using a double-limiting system with positioning steel balls and snap rings. By utilizing the magnitude of the fixing force between them, multiple rings can be moved forward sequentially. Moreover, simply shaking the handle is enough to push multiple rings forward sequentially, achieving the goal of eliminating the need for repeated adjustments and shortening adjustment time. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of this utility model;

[0009] Figure 2 This is a schematic diagram of the circular sleeve of this utility model;

[0010] Figure 3 This is a schematic diagram of the positioning steel ball of this utility model;

[0011] The components are: 1. Extension shaft; 2. Combined ring; 3. Pushing assembly; 101. Area to be extended; 201. Ring sleeve; 202. Positioning steel ball; 203. Snap ring; 204. Positioning slide; 205. Steel ball; 206. Connecting column; 301. Two-jaw bracket; 302. Screw; 303. Handwheel; 304. Positioning cone. Detailed Implementation

[0012] To better understand the purpose, structure, and function of this utility model, a more detailed description of this utility model will be provided below with reference to the accompanying drawings.

[0013] This invention utilizes a multi-stage adjustment mechanism, requiring only the selection of a matching ring for tensile stress patterning during use.

[0014] like Figure 1 As shown, this utility model provides a multi-stage adjustable tab extension mechanism, including a combined ring 2 and a pushing component 3; the combined ring 2 is installed on the extension shaft 1 in the extension area 101 to be extended, the extension area 101 is the area that needs to be raised and stretched by changing the diameter of the extension shaft 1, and is symmetrical on both sides of the roller pressing area; the pushing component 3 is installed on the outside of the combined ring 2 for gradually pushing the combined ring 2 to change its diameter;

[0015] like Figure 1 , Figure 2 As shown, the combined ring 2 includes multiple nested ring sleeves 201. A positioning steel ball 202 is installed at one end of the inner wall of each ring sleeve 201, and a retaining spring 203 is installed at the other end of the inner wall for limiting the position. A positioning slide 204 is provided on the outer wall of each ring sleeve 201, and the positioning slide 204 is matched with the positioning steel ball 202.

[0016] like Figure 3 As shown, the positioning steel ball 202 includes a steel ball 205 and a connecting post 206. The steel ball 205 is fixed on the connecting post 206. The connecting post 206 is provided with external threads. The inner side wall of the annular sleeve 201 is provided with a threaded hole for installing the connecting post 206.

[0017] The innermost ring sleeve 201 is fixed to the extension shaft 1, while the other ring sleeves 201 are slidably connected to the extension shaft 1.

[0018] The annular sleeve 201 and the extension shaft 1 are slidably connected by a concave-convex guide rail structure.

[0019] Each of the circular sleeves 201 has a polytetrafluoroethylene coating on its outer surface.

[0020] Each of the circular ring sleeves 201 has a slot at the other end of its inner sidewall, and a retaining spring 203 is installed in the slot.

[0021] like Figure 1 , Figure 2 As shown, the pushing component 3 includes a two-jaw bracket 301, a screw 302, and a handwheel 303. The main body of the two-jaw bracket 301 is a U-shaped frame. Both ends of the two-jaw bracket 301 are connected to the outermost ring sleeve 201 in the combined ring 2 by welding or other fixed connection methods. The middle part of the two-jaw bracket 301 is threadedly connected to the screw 302 through a threaded hole or nut. The screw 302 is axially arranged along the extension shaft 1. One end of the screw 302 rests on the end face of the extension shaft 1, and the other end of the screw 302 is equipped with a handwheel 303.

[0022] One end of the screw 302 that connects with the extension shaft 1 is configured as a positioning cone 304, and a cone hole that mates with the positioning cone 304 is provided on the end face of the extension shaft 1.

[0023] With attachment Figure 1 For example, in the demonstration, the combined ring 2 is set with five rings 201, which are rings A, B, C, D, and E from the inside out.

[0024] The installation sequence is as follows: Ring A and extension shaft 1 are fixed with adhesive. Ring B is fixed by its left-side positioning ball 202 and the right-side upper positioning slide 204 of ring A, with a fixing force of F1. A retaining spring 203 is installed on the inner right side of ring B. Ring C is fixed by its left-side positioning ball 202 and the right-side positioning slide 204 of ring B, with a fixing force of F2. A retaining spring 203 is installed on the inner right side of ring C. Ring D is fixed by its left-side positioning ball 202 and the right-side upper positioning slide 204 of ring C, with a fixing force of F3. A retaining spring 203 is installed on the inner right side of ring D. The ring sleeve E is fixed by the positioning steel ball 202 on its left side and the upper positioning slide 204 on the right side of the ring sleeve D, with a fixing force of F4. A retaining spring 203 is installed on the inner right side of the inner circle of the ring sleeve E. The magnitude of the fixing force is F4>F3>F2>F1. This ensures that the ring sleeves retract sequentially towards A. When the previous ring sleeve 201 on the left side has retracted and reached the limit position of the retaining spring 203, the next ring sleeve 201 on the right side will begin to retract. The ring sleeve E is connected to the push assembly 3.

[0025] A multi-level adjustable tab extension mechanism includes the following steps:

[0026] Step 1: First, install the five-stage circular ring sleeves 201 onto the extension shaft 1 in sequence and stretch them until all the circular ring sleeves 201 are unfolded. Then, install the handwheel 303, screw 302, and two-jaw bracket onto the extension shaft 1.

[0027] Step 2: During the roll forming process, first use the ring A to roll and stretch the tab area, and observe the roll forming and stretching situation. If the effect is not good;

[0028] Step 3: Use ring sleeve B instead. Simply turn handwheel 303 to move ring sleeve B forward to the electrode extension point.

[0029] Step 4: If the stretching of ring B does not achieve the required process effect, then use ring C for stretching. Similarly, turn handwheel 303 to switch to ring C.

[0030] Step 5: Record the specific 201 ring sleeve selected for this roll forming process, so that it can be selected in advance next time to achieve the required process effect in one go.

[0031] This utility model is a device for multi-stage continuous diameter change. During use, it significantly improves production efficiency and has a significant effect on stretching and extending thin areas.

[0032] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A multi-stage adjustable tab extension mechanism, characterized in that: It includes a combined ring (2) and a pushing component (3); the combined ring (2) is installed on the extension area (101) on the extension shaft (1), and the pushing component (3) is installed on the outside of the combined ring (2) for gradually pushing the combined ring (2) to change its diameter; The combined ring (2) includes multiple nested ring sleeves (201). Each ring sleeve (201) has a positioning steel ball (202) installed at one end of its inner wall and a retaining ring (203) installed at the other end of its inner wall for limiting the position. Each ring sleeve (201) has a positioning slide (204) on its outer wall, and the positioning slide (204) is matched with the positioning steel ball (202).

2. The multi-stage adjustable tab extension mechanism according to claim 1, characterized in that: The innermost ring sleeve (201) is fixed to the extension shaft (1), while the other ring sleeves (201) are slidably connected to the extension shaft (1) back and forth.

3. The multi-stage adjustable tab extension mechanism according to claim 2, characterized in that: Each of the ring sleeves (201) has a polytetrafluoroethylene coating on its outer surface.

4. The multi-stage adjustable tab extension mechanism according to claim 3, characterized in that: Each of the inner sidewalls of the ring sleeve (201) has a slot at the other end, and a retaining spring (203) is installed in the slot.

5. The multi-stage adjustable tab extension mechanism according to claim 1, characterized in that: The pushing component (3) includes a two-jaw bracket (301), a screw (302), and a handwheel (303). The main body of the two-jaw bracket (301) is a U-shaped frame. Both ends of the two-jaw bracket (301) are connected to the outermost ring sleeve (201) in the combined ring (2). The middle part of the two-jaw bracket (301) is threadedly connected to the screw (302) through a threaded hole or nut. The screw (302) is axially arranged along the extension shaft (1). One end of the screw (302) rests on the end face of the extension shaft (1), and the other end of the screw (302) is equipped with a handwheel (303).

6. The multi-stage adjustable tab extension mechanism according to claim 5, characterized in that: One end of the screw (302) that connects with the extension shaft (1) is configured as a positioning cone (304), and a conical hole that mates with the positioning cone (304) is provided on the end face of the extension shaft (1).

7. The multi-stage adjustable tab extension mechanism according to claim 1, characterized in that: The positioning steel ball (202) includes a steel ball (205) and a connecting post (206). The steel ball (205) is fixed on the connecting post (206). The connecting post (206) is provided with external threads. The inner side wall of the ring sleeve (201) is provided with threaded holes for installing the connecting post (206).

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