A tab flattening mechanism at a winding machine turret

Abstract

The application relates to a tab flattening mechanism at a winding machine turret and relates to the technical field of battery cell preparation. The tab flattening mechanism comprises a mounting plate, a winding needle rotatably connected to the mounting plate, and a tab guide plate arranged at the front section of the winding machine, wherein one end of the tab guide plate close to the winding needle is provided with a Mylar sheet, the Mylar sheet is in a curved shape, and the winding needle is located above the Mylar sheet. The application has the effect of improving the problem that the tab is prone to be folded during the operation of the winding machine.

Description

Technical Field

[0001] This application relates to the field of battery cell manufacturing technology, and in particular to a lug smoothing mechanism at the turret of a winding machine. Background Technology

[0002] The turret winding machine is a core component of the winding machine and plays a crucial role in the winding process of industries such as lithium batteries, chemical fibers, and textiles. Due to the rapid development of the lithium battery industry, the requirements for cell production efficiency are becoming increasingly stringent. In order to improve the production efficiency of cells, the winding machine also needs to be improved accordingly. However, in actual operation, if the reinforcing ribs at the root of the incoming electrode tab at the front end of the winding machine are not properly treated or the aluminum foil is too thick, the electrode tab will be too hard. When the winding needle speed reaches 2000 linear speed, the electrode tab will collide with the Mylar film, causing the electrode tab to fold. At this stage, the electrode tab folding equipment cannot detect the folding of the electrode tab, so it needs to be improved. Utility Model Content

[0003] In order to improve the problem of electrode tabs easily breaking during the operation of the winding machine, this application provides an electrode tab smoothing mechanism at the turret of the winding machine.

[0004] The present application provides a lug smoothing mechanism for a winding machine turret, which adopts the following technical solution:

[0005] A lug smoothing mechanism for a turret of a winding machine includes a mounting plate on which a winding needle is rotatably connected. It also includes a lug guide plate disposed at the front end of the winding machine. A Mylar sheet is disposed at one end of the lug guide plate near the winding needle. The Mylar sheet is curved, and the winding needle is located above the Mylar sheet.

[0006] By adopting the above technical solution, the Mylar sheet is set into a curved shape so that the tab can be smoothed by the rotation of the winding needle. The structure is simple, easy to implement, and has high convenience and practicality.

[0007] Preferably, one end of the Mylar sheet is provided with a plug post, and the end of the electrode guide plate near the winding needle is provided with a plug groove for the plug post to enter.

[0008] By adopting the above technical solution, the electrode guide plate can be detached, which facilitates the quick installation or removal of the electrode guide plate and has high convenience.

[0009] Preferably, one end of the insertion slot is closed, and a fastener is provided at the closed end of the insertion slot. The fastener passes through the closed end of the insertion slot and is connected to the insertion post.

[0010] By adopting the above technical solutions and using fasteners, the stability and safety of the electrode guide plate connection can be improved.

[0011] Preferably, a rotating plate is provided at the end of the tab guide plate away from the winding needle, the rotating plate is rotatably connected to the mounting plate, the end of the rotating plate away from the tab guide plate is arc-shaped, and a plurality of driving tooth blocks are provided on the arc-shaped peripheral wall of the rotating plate. A driving gear is rotatably connected to the mounting plate, and the driving gear meshes with the driving tooth blocks.

[0012] By adopting the above technical solution, the drive gear and drive tooth block mesh, and the external motor can drive the electrode guide plate to rotate at a certain angle, so as to flexibly adjust according to the actual size of the needle.

[0013] Preferably, the mounting plate has a waist-shaped groove extending through it along its thickness direction. The waist-shaped groove is arranged vertically. An adjusting plate is provided on the side of the waist-shaped groove away from the coiling needle. The end of the coiling needle passes through the adjusting plate and is rotatably connected to the adjusting plate. A rotating component is provided on the side of the mounting plate away from the coiling needle. The output shaft of the rotating component is arranged vertically. A driving screw is provided on the end wall of the output shaft of the rotating component. A driving tube is provided on the top wall of the adjusting plate. The driving screw is inserted into the driving tube and is threaded into the inner wall of the driving tube.

[0014] By adopting the above technical solution, the winding needle can be raised and lowered by adjusting the plate and rotating parts, thereby flexibly adjusting the positional relationship between the winding needle and the Mylar film according to different winding needle diameters, which improves the flexibility and applicability of this application.

[0015] Preferably, the mounting plate has a limiting post on the side facing the adjusting plate, and the adjusting plate has a limiting groove through it along the thickness direction for the limiting post to pass through, and the limiting groove is opened in the vertical direction.

[0016] By adopting the above technical solution, the setting of the limiting post can ensure that the adjusting plate can only move up and down along the length of the waist groove relative to the mounting plate, preventing the adjusting plate from deflecting and affecting the normal operation of the winding needle, thus improving the safety in the implementation process of this application.

[0017] Preferably, a limiting block is threaded to one end wall of the limiting post that passes through the limiting groove, and the diameter of the limiting block is greater than the width of the limiting groove.

[0018] By adopting the above technical solution, setting a limit block can prevent the adjustment plate from falling off the limit post, thereby ensuring the stability of the adjustment plate and the winding needle.

[0019] Preferably, both ends of the coiling needle are provided with rotating shafts, and the coiling needle is rotatably connected to the adjusting plate through the rotating shafts. A positioning cylinder is threadedly connected to the peripheral wall of the rotating shaft, and the positioning cylinder is nested in the peripheral wall of the coiling needle.

[0020] By adopting the above technical solution, a detachable connection can be formed between the coil needle and the mounting plate, which facilitates the easy disassembly or replacement of the coil needle, and has high applicability and convenience.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. The Mylar sheet is set to a curved shape so that the tabs can be smoothed by rotating the needle. The structure is simple, easy to implement, and has high convenience and practicality.

[0023] 2. This application realizes the detachable connection of the electrode guide plate, which facilitates the quick installation or removal of the electrode guide plate and has high convenience. Attached Figure Description

[0024] Figure 1 This is a front structural schematic diagram of a lug smoothing mechanism at the turret of a winding machine according to an embodiment of this application.

[0025] Figure 2 This is a schematic diagram of the back structure of a lug smoothing mechanism at the turret of a winding machine according to an embodiment of this application.

[0026] Figure 3 This is a schematic diagram of the structure of the coiling needle and the positioning cylinder according to an embodiment of this application.

[0027] Explanation of reference numerals in the attached drawings: 1. Mounting plate; 2. Coiling needle; 3. Electrode guide plate; 4. Mylar sheet; 5. Insertion post; 6. Insertion slot; 7. Fastener; 8. Rotating plate; 9. Drive gear block; 10. Drive gear; 11. Waist-shaped groove; 12. Adjusting plate; 13. Rotating component; 14. Drive screw; 15. Drive tube; 16. Limiting post; 17. Limiting groove; 18. Limiting block; 19. Rotating shaft; 20. Positioning cylinder. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0029] This application discloses an electrode lug smoothing mechanism at the turret of a winding machine. (Refer to...) Figure 1 , Figure 2 and Figure 3The system includes a mounting plate 1. In this embodiment, only the mounting plate 1 on one side will be described. A coiling needle 2 is rotatably connected to both mounting plates 1. A waist-shaped groove 11 is formed through the mounting plate 1 along the thickness direction. The length direction of the waist-shaped groove 11 is set in the vertical direction. An adjusting plate 12 is provided on the side of the waist-shaped groove 11 away from the coiling needle 2. A rotating shaft 19 is rotatably connected to the adjusting plate 12. The rotating shaft 19 passes through the waist-shaped groove 11. A positioning cylinder 20 is threaded to the peripheral wall of one end of the rotating shaft 19 that passes through the waist-shaped groove 11. The positioning cylinder 20 is nested in the peripheral wall of the coiling needle 2 to position the coiling needle 2 and drive the coiling needle 2 to rotate.

[0030] Reference Figure 1 and Figure 2 A rotating component 13 is provided on the side of the mounting plate 1 away from the winding needle 2. In this embodiment, the rotating component 13 is a motor. The output shaft of the rotating component 13 is set towards the ground. The rotating component 13 is located above the adjusting plate 12. A drive screw 14 is coaxially provided on the end wall of the output shaft of the rotating component 13. A drive tube 15 is provided on the top wall of the adjusting plate 12. The drive screw 14 is inserted into the drive tube 15 and threadedly engaged with the inner wall of the drive tube 15 to drive the adjusting plate 12 to move up and down in the vertical direction.

[0031] Reference Figure 1 and Figure 2 The mounting plate 1 has two limiting posts 16 on the side facing the adjusting plate 12. The adjusting plate 12 has two limiting grooves 17 extending through it along its thickness direction. The limiting grooves 17 are opened vertically. One end of the limiting post 16 passing through the limiting groove 17 is threadedly connected to a limiting block 18. The limiting block 18 abuts against the surface of the adjusting plate 12. The diameter of the limiting block 18 is larger than the width of the limiting groove 17, thereby limiting the adjusting plate 12 and preventing it from deflecting with the rotating part 13, so as to maintain stability and safety.

[0032] Reference Figure 1 and Figure 2 The front section of the winding machine is provided with a tab guide plate 3. A Mylar sheet 4 is provided at one end of the tab guide plate 3 near the winding needle 2. In this embodiment, the Mylar sheet 4 is curved. The winding needle 2 is located above the Mylar sheet 4. A plug post 5 is provided at one end of the Mylar sheet 4 near the tab guide plate 3. A plug groove 6 is provided on one side of the tab guide plate 3 for the plug post 5 to enter. One end of the plug groove 6 is closed. A fastener 7 is provided at the closed end of the plug groove 6. The fastener 7 is a bolt. The fastener 7 passes through the closed end of the plug groove 6 and is connected to the plug post 5 to improve the stability of the plug post 5 and the Mylar sheet 4.

[0033] Reference Figure 1 and Figure 2A rotating plate 8 is provided at the end of the tab guide plate 3 away from the Mylar sheet 4. The end of the rotating plate 8 away from the tab guide plate 3 is arc-shaped. Several driving tooth blocks 9 are provided on the arc-shaped side wall of the rotating plate 8. A driving gear 10 is rotatably connected to the mounting plate 1. The driving gear 10 is driven to rotate by an external motor. The driving gear 10 meshes with the driving tooth blocks 9 so as to drive the tab guide plate 3 and the Mylar sheet 4 to rotate, thereby realizing the position adjustment between the winding needle 2 and the Mylar sheet 4.

[0034] The implementation principle of the electrode smoothing mechanism at the turret of the winding machine in this application embodiment is as follows: This application can smooth the electrode by rotating the winding needle 2 and bending the Mylar sheet 4, winding the electrode around the outer wall of the winding needle 2, thereby improving the problem of electrode folding and improving the production quality of the battery cell.

[0035] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A lug smoothing mechanism at the turret of a winding machine, characterized in that: The system includes a mounting plate on which a coiling needle is rotatably connected. It also includes an electrode guide plate located at the front of the winding machine. A Mylar sheet, curved in shape, is located at the end of the electrode guide plate near the coiling needle, with the coiling needle positioned above it. A insertion post is located at one end of the Mylar sheet. An insertion groove is formed at the end of the electrode guide plate near the coiling needle for the insertion post to enter. One end of the insertion groove is closed, and a fastener is located at the closed end of the groove, passing through the closed end and connecting to the insertion post. A rotating plate is located at the end of the electrode guide plate away from the coiling needle, rotatably connected to the mounting plate. The end of the rotating plate away from the electrode guide plate is arc-shaped, and several driving gear blocks are provided on the arc-shaped peripheral wall of the rotating plate. A driving gear is rotatably connected to the mounting plate, meshing with the driving gear blocks. A waist-shaped groove is formed through the mounting plate along its thickness direction. The device is vertically oriented. An adjusting plate is located on the side of the waist-shaped groove away from the coiling needle. The end of the coiling needle passes through the adjusting plate and is rotatably connected to it. A rotating component is located on the side of the mounting plate away from the coiling needle. The output shaft of the rotating component is vertically oriented, and a driving screw is located on the end wall of the output shaft. A driving tube is located on the top wall of the adjusting plate, and the driving screw is inserted into the driving tube and threaded into its inner wall. A limiting post is located on the side of the mounting plate facing the adjusting plate. A limiting groove is formed through the adjusting plate along its thickness direction to allow the limiting post to pass through. The limiting groove is vertically oriented. A limiting block is threaded to the end wall of the limiting post passing through the limiting groove. The diameter of the limiting block is larger than the width of the limiting groove. Rotating shafts are located at both ends of the coiling needle. The coiling needle is rotatably connected to the adjusting plate via these rotating shafts. A positioning cylinder is threaded to the peripheral wall of the rotating shaft, and the positioning cylinder is nested within the peripheral wall of the coiling needle.

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