Tab cutting device

Abstract

The utility model discloses a kind of tab cutting device, including lower cutter die and the upper cutter die matched with the lower cutter die, the upper cutter die is oppositely arranged with the lower cutter die, and the upper cutter die can be moved to the lower cutter die and realize the cutting of tab, or away from the lower cutter die;Wherein, the upper cutter die and the lower cutter die have two edges respectively in the shape of ")", and are first arc edge and second arc edge respectively.By the cooperation between first arc edge and second arc edge, the upper cutter die and the lower cutter die can cut two knives to tab simultaneously, and it is arc, not only can realize the cutting of first tab and second tab, but also realize the arc structure of first tab tail end and the arc structure of second tab front end, which can avoid sharp edge in tab cutting process;In addition, the distance between first arc edge and second arc edge can adjust the length of tab, without cutting again to adjust tab length.

Description

Technical Field

[0001] This utility model relates to the field of film production technology, specifically to a tab cutting device. Background Technology

[0002] In the electrode manufacturing process, the tab cutting device cuts the tabs from the tab roll, and the cut tabs are then welded to the electrode sheet. However, different lithium batteries have different requirements for the length of the tabs. Therefore, in order to meet the needs of most lithium batteries, the tabs are made to be relatively long when preparing the tab roll. Thus, after cutting the tabs from the tab roll, the tab cutting device needs to make a second cut to meet the length requirements. Utility Model Content

[0003] The purpose of this invention is to provide a tab cutting device that can achieve tab cutting and length adjustment in one step.

[0004] To achieve the above objectives, this utility model provides an electrode tab cutting device, including a lower die and an upper die that matches the lower die. The upper die and the lower die are arranged opposite to each other, and the upper die can move toward the lower die to cut the electrode tab, or move away from the lower die. The upper die and the lower die each have two sides in the shape of "("), which are a first arc side and a second arc side, respectively.

[0005] Furthermore, the lower die is mounted on a mounting mechanism, which includes a mounting plate. The mounting plate has a stepped groove that forms an "L" shape, and the lower die is mounted in the stepped groove.

[0006] Furthermore, the bottom surface of the stepped groove is provided with at least one limiting groove, and the bottom of the lower die is correspondingly provided with at least one limiting block, which matches the limiting groove.

[0007] Furthermore, at least one connecting groove is provided on the side of the stepped groove, and at least one connecting pin is correspondingly protruded from the side wall of the lower die, the connecting pin being able to be inserted into or removed from the connecting groove.

[0008] Furthermore, the mounting plate has at least one storage slot, which is connected to the connecting slot. When the connecting pin is inserted into the connecting slot, it can be accommodated in the storage slot.

[0009] Further, a clamping structure for clamping the connecting pin is provided in the storage groove. The clamping structure includes an adjusting screw rod, two sliders and two clamping blocks. Opposite threads are provided at both ends of the adjusting screw rod, and the two sliders are respectively sleeved on the opposite threads of the adjusting screw rod. Rotating the adjusting screw rod can make the two sliders approach or move away from each other. The two clamping blocks are respectively connected to the two sliders, and the two clamping blocks can clamp or release the connecting pin.

[0010] Further, an activity groove for accommodating the adjusting screw rod is formed in the mounting plate, and an adjusting knob is provided at one end of the adjusting screw rod exposed from the activity groove.

[0011] Further, the mounting mechanism is mounted on a base through a plugging structure. The plugging structure includes an adjusting screw rod, two movable seats and two plugging plates. Opposite threads are provided at both ends of the adjusting screw rod, and the two movable seats are respectively sleeved on the opposite threads of the adjusting screw rod. Rotating the adjusting screw rod can make the two movable seats approach or move away from each other. The two plugging plates are respectively connected to the two movable seats, and the ends of the two plugging plates respectively extend outwards to form a "r" shaped structure. An inverted T-shaped groove is formed in the base. When the two plugging plates move away from each other, they are plugged into the inverted T-shaped groove. When the two plugging plates approach each other, the mounting mechanism can be detached from the base.

[0012] Further, a mounting groove for mounting the adjusting screw rod is formed in the mounting plate.

[0013] In the above technical solution, the technical effects and advantages provided by the present utility model are as follows:

[0014] The upper cutting die and the lower cutting die respectively have two sides in the shape of ")(", namely a first arc-shaped side and a second arc-shaped side. Through the cooperation between the first arc-shaped side and the second arc-shaped side, the upper cutting die and the lower cutting die can simultaneously cut the tab twice, and the cuts are arc-shaped. This not only realizes the cutting of the first tab and the second tab, but also realizes the arc-shaped structure at the tail end of the first tab and the arc-shaped structure at the front end of the second tab, which can avoid the generation of sharp edges during the tab cutting process, and prevent the tab from piercing the electrode sheet during processes such as tab welding and electrode sheet winding, thus avoiding battery short circuit and affecting the performance of the battery. In addition, the distance between the first arc-shaped side and the second arc-shaped side can adjust the length of the tab, and there is no need to cut again to adjust the tab length. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is an exploded three-dimensional view of the installation mechanism and placement mechanism of this utility model.

[0018] Figure 3 This is a top cross-sectional view of the installation mechanism and placement mechanism of this utility model.

[0019] Figure 4 This utility model Figure 3 Enlarged view of part A.

[0020] Figure 5 This is an exploded three-dimensional view of the installation mechanism of this utility model.

[0021] Figure 6 This is a three-dimensional structural diagram of the placement mechanism of this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1-Base; 2-Mounting mechanism; 201-Mounting plate; 202-Mounting groove; 203-Adjusting screw; 204-Movable seat; 205-Plug-in plate; 206-Limiting groove; 207-Connecting groove; 208-Storage groove; 209-Movable groove; 210-Adjusting screw; 211-Adjusting knob; 212-Slider; 213-Snap-fit ​​block; 3-Placement mechanism; 301-Lower die; 302-First arc edge; 303-Second arc edge; 304-Limiting block; 305-Connecting pin; 4-Upper die. Detailed Implementation

[0024] This utility model provides, for example Figure 1 The illustrated electrode tab cutting device includes a lower die 301 and an upper die 4 that matches the lower die 301. The upper die 4 is disposed opposite to the lower die 301. The upper die 4 can move to the lower die 301 to cut the electrode tab, or move away from the lower die 301 to cut the electrode tab from the lower material and load the electrode tab to be cut. In the prior art, any drive mechanism that can drive the upper die 4 to move can be used in this embodiment, and no limitation is made here. The upper die 4 and the lower die 301 each have two arc-shaped edges, which are in the shape of "(" and are respectively the first arc-shaped edge 302 and the second arc-shaped edge 303.

[0025] The cooperation between the first arc-shaped edge 302 and the second arc-shaped edge 303 allows the upper die 4 and the lower die 301 to simultaneously cut the tab twice, and the cuts are arc-shaped. This not only cuts the first and second tabs, but also creates an arc-shaped structure at the tail end of the first tab and an arc-shaped structure at the front end of the second tab. This avoids sharp edges during the tab cutting process and prevents the electrode from puncturing the electrode during tab welding, electrode winding, and other processes, which could cause a short circuit in the battery and affect battery performance. In addition, the distance between the first arc-shaped edge 302 and the second arc-shaped edge 303 can adjust the length of the tab, eliminating the need for another cut to adjust the tab length.

[0026] In another embodiment, the lower die 301 is mounted on a mounting mechanism 2. The mounting mechanism 2 is an optional component, and the tab cutting device can operate normally without the mounting mechanism 2. The mounting mechanism 2 includes a mounting plate 201, which has an "L"-shaped stepped groove. The lower die 301 is mounted in the stepped groove. The lower die 301 is detachably connected to the mounting plate 201. When the length of the tab needs to be adjusted, a lower die 301 with a spacing between the first arc-shaped edge 302 and the second arc-shaped edge 303 that meets the requirements can be replaced and mounted on the mounting plate 201.

[0027] The connection structure between the lower die 301 and the mounting plate 201 is described as follows: At least one limiting groove 206 is provided on the bottom surface of the stepped groove of the mounting plate 201. At least one limiting block 304 is correspondingly protruded from the bottom of the lower die 301. The limiting block 304 matches the limiting groove 206, preventing the lower die 301 from wobbling after installation. In this embodiment, there are two limiting grooves 206 and two limiting blocks 304, extending in a direction perpendicular to the side of the stepped groove. Of course, in other embodiments, there may be one or more. At least one connecting groove 207 is provided on the side of the stepped groove of the mounting plate 201. At least one connecting pin 305 is correspondingly protruded from the side wall of the lower die 301. The connecting pin 305 can be inserted into or removed from the connecting groove 207. Furthermore, the mounting plate 201 has at least one receiving groove 208, which is connected to the connecting groove 207. When the connecting pin 305 is inserted from the connecting groove 207, it can be accommodated in the receiving groove 208. The receiving groove 208 is provided with a locking structure for locking the connecting pin 305. The locking structure includes an adjusting screw 210, two sliders 212, and two locking blocks 213. The two ends of the adjusting screw 210 are provided with opposite threads. The two sliders 212 are respectively engaged with the opposite threads of the adjusting screw 210. Rotating the adjusting screw 210 can move the two sliders 212 closer or further apart. The two locking blocks 213 are respectively connected to the two sliders 212 and can clamp or release the connecting pin 305. The mounting plate 201 has a movable groove 209 for accommodating the adjusting screw 210. One end of the adjusting screw 210 exposed in the movable groove 209 is provided with an adjusting knob 211. In this embodiment, there are two connecting grooves 207, connecting pins 305, storage grooves 208, and movable grooves 209. Of course, in other embodiments, there may be one or more. Rotating the adjusting screw 210 can move the two locking blocks 213 closer or further apart. When the two locking blocks 213 are close together, they can clamp the connecting pin 305 to prevent it from detaching from the storage groove 208, thereby securely mounting the lower die 301 onto the mounting plate 201. When the two locking blocks 213 are far apart, the locking blocks 213 release the connecting pin 305. At this time, the lower die 301 can detach from the storage groove 208 and further detach from the connecting groove 207, thereby unloading the lower die 301 from the mounting plate 201.

[0028] Preferably, a waste recycling mechanism (not shown) is provided at the position of the mounting plate 201 corresponding to the lower die 301 to recycle the cut tab waste.

[0029] In another embodiment, the tab cutting device further includes a base 1, which is an optional component. The operation of the tab cutting device is not affected when the base 1 is not provided. The mounting mechanism 2 is mounted on the base 1 through a plug-in structure. The plug-in structure includes an adjusting screw rod 203, two movable seats 204 and two plug-in plates 205. Opposite threads are provided at both ends of the adjusting screw rod 203. The two movable seats 204 are respectively sleeved with the opposite threads of the adjusting screw rod 203. Rotating the adjusting screw rod 203 can make the two movable seats 204 approach or move away from each other. The two plug-in plates 205 are respectively connected to the two movable seats 204. The ends of the two plug-in plates 205 extend outwards respectively to form a "son" character structure. An inverted T-shaped groove is formed on the base 1. When the two plug-in plates 205 move away from each other, they are plugged into the inverted T-shaped groove. When the two plug-in plates 205 approach each other, the mounting mechanism 2 can be detached from the base 1. An installation groove 202 for installing the adjusting screw rod 203 is formed on the mounting plate 201.

[0030] Only some exemplary embodiments of the present invention are described above by way of illustration. Without doubt, for those of ordinary skill in the art, various different ways can be used to modify the described embodiments without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present invention.

Claims

1. A tab cutting device, characterized in that, include: Lower die (301); as well as An upper die (4) is matched with the lower die (301). The upper die (4) is arranged opposite to the lower die (301) and can be moved toward the lower die (301) to cut the tab, or away from the lower die (301). The upper die (4) and the lower die (301) each have two sides in the shape of ")(", namely the first arc side (302) and the second arc side (303).

2. The tab cutting device according to claim 1, characterized in that: The lower die (301) is mounted on a mounting mechanism (2), which includes a mounting plate (201). The mounting plate (201) has a stepped groove and is L-shaped. The lower die (301) is mounted in the stepped groove.

3. The tab cutting device according to claim 2, characterized in that: The bottom surface of the stepped groove is provided with at least one limiting groove (206), and the bottom of the lower die (301) is provided with at least one limiting block (304), which matches the limiting groove (206).

4. The tab cutting device according to claim 2, characterized in that: The stepped groove has at least one connecting groove (207) on its side, and the lower die (301) has at least one connecting pin (305) protruding from its side wall. The connecting pin (305) can be inserted into or removed from the connecting groove (207).

5. The tab cutting device according to claim 4, characterized in that: The mounting plate (201) has at least one storage slot (208) which is connected to the connecting slot (207). When the connecting pin (305) is inserted from the connecting slot (207), it can be accommodated in the storage slot (208).

6. The tab cutting device according to claim 5, characterized in that: The storage slot (208) is provided with a snap-fit ​​structure that snaps into the connecting pin (305). The snap-fit ​​structure includes an adjusting screw (210), two sliders (212), and two snap-fit ​​blocks (213). The two ends of the adjusting screw (210) are provided with opposite threads. The two sliders (212) are respectively engaged with the opposite threads of the adjusting screw (210). Rotating the adjusting screw (210) can make the two sliders (212) move closer or further away from each other. The two snap-fit ​​blocks (213) are respectively connected to the two sliders (212). The two snap-fit ​​blocks (213) can clamp or release the connecting pin (305).

7. The tab cutting device according to claim 6, characterized in that: The mounting plate (201) has a movable groove (209) for accommodating the adjusting screw (210), and an adjusting knob (211) is provided at one end of the adjusting screw (210) that protrudes from the movable groove (209).

8. The tab cutting device according to claim 2, characterized in that: The mounting mechanism (2) is mounted on a base (1) via a plug-in structure, the plug-in structure comprising: An adjusting screw (203) is provided with opposite threads at both ends; Two movable seats (204) are respectively engaged with opposite threads of the adjusting screw (203). Rotating the adjusting screw (203) can move the two movable seats (204) closer to or further apart from each other; and Two plug-in boards (205), the two plug-in boards (205) are respectively connected to the two movable seats (204), the ends of the two plug-in boards (205) respectively extend outwards to form a "son" - shaped structure, an inverted T - shaped groove is provided on the base (1), when the two plug-in boards (205) are far away from each other, they are inserted into the inverted T - shaped groove, and when the two plug-in boards (205) are close to each other, the installation mechanism (2) can be detached from the base (1).

9. The tab cutting device according to claim 8, characterized in that: An installation groove (202) for installing the adjusting screw rod (203) is provided on the installation plate (201).

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