阅读说明：本技术 一种激光切割极耳的辅助牵引装置及激光切割极耳系统 (Auxiliary traction device for laser cutting of tab and laser cutting tab system ) 是由 蔡智栋 邱友红 王涛 黄东海 汤志为 郑付成 朱杰文 杨凯 向小龙 谢飞 高云峰 于 2020-04-03 设计创作，主要内容包括：公开了一种激光切割极耳的辅助牵引装置及激光切割极耳系统。辅助牵引装置包括沿着极片带(10)运输方向设置的前吸附组件(100)和皮带吸附牵引组件(200),且激光切割极耳区域(320)设置在前吸附组件(100)和皮带吸附牵引组件(200)之间,前吸附组件(100)包括吸附贴紧极片带(10)的吸附块(110),皮带吸附牵引组件(200)包括沿着极片带(10)运输方向同步运转的多个皮带(260),以及为各皮带(260)缝隙处提供负压的吸附模块。通过辅助牵引装置,使极片带在激光切割极耳区域处进行激光加工时,减弱甚至消除抖动,提高稳定性；极片激光切割后的废料通过皮带吸附牵引组件与极片及时分离,使废料有效排出；同时皮带吸附牵引组件的负压及时吸走切割后落在皮带上的粉尘,避免粉尘堆积。(Disclosed are an auxiliary traction device for cutting a tab by laser and a tab laser cutting system. Supplementary draw gear includes along the preceding adsorption component (100) and the belt absorption of pole piece area (10) direction of transportation setting and pulls subassembly (200), and laser cutting utmost point ear region (320) set up in the front between adsorption component (100) and the belt absorption pulls subassembly (200), preceding adsorption component (100) including adsorb absorption piece (110) of pasting closely pole piece area (10), belt absorption pulls subassembly (200) including along a plurality of belts (260) of pole piece area (10) direction of transportation synchronous operation to and provide the adsorption module of negative pressure for each belt (260) gap department. Through the auxiliary traction device, the electrode strip is subjected to laser processing in a laser cutting electrode lug area, so that the jitter is weakened or even eliminated, and the stability is improved; waste materials after pole piece laser cutting are separated from the pole pieces in time through a belt adsorption traction assembly, so that the waste materials are effectively discharged; meanwhile, the negative pressure of the belt adsorption traction assembly timely sucks away dust falling on the belt after cutting, and dust accumulation is avoided.)

1. The utility model provides an auxiliary traction device of laser cutting utmost point ear, pole piece area conveyer drive the transportation of pole piece area and pass the regional department of laser cutting utmost point ear, its characterized in that: the auxiliary traction device comprises a front adsorption component and a belt adsorption traction component which are arranged along the conveying direction of the pole piece belt, and the laser cutting lug area is arranged between the front adsorption component and the belt adsorption traction component; wherein, preceding adsorption component is including adsorbing the absorption piece that pastes tight pole piece area, the belt adsorbs the subassembly of drawing and includes along pole piece area direction of transportation synchronous operation's a plurality of belts to and provide the absorption module of negative pressure for each belt gap department.

2. Auxiliary traction device according to claim 1, characterized in that: the front adsorption assembly further comprises a negative pressure pipe, the negative pressure pipe is respectively connected with the adsorption holes in the adsorption block and the external vacuum assembly, and the external vacuum assembly provides negative pressure for the adsorption holes through the negative pressure pipe; wherein, the pole piece area is adsorbed by the adsorption hole and is attached to the adsorption block when passing through the front adsorption assembly.

3. The auxiliary traction device as defined in claim 1, wherein the belt-suction traction assembly further comprises:

the vertical plate strut is used as a main bracket of the belt adsorption traction assembly;

the driving shaft and the driven shaft are respectively arranged at two ends of the vertical plate strut, and the belt is sleeved between the driving shaft and the driven shaft to synchronously operate;

and the driving module is connected with the driving shaft and drives the driving shaft to rotate.

4. Auxiliary traction device according to claim 1 or 3, characterized in that: the adsorption module comprises a vacuum cover, a cover opening of the vacuum cover is sleeved on the non-adsorption end face of the belt, and the external vacuum component is communicated with a negative pressure opening of the vacuum cover and provides negative pressure.

5. Auxiliary traction device according to claim 1 or 3, characterized in that: the running speed of the belt is greater than the conveying speed of the pole piece belt.

6. Auxiliary traction device according to claim 3, characterized in that: the belt adsorption traction assembly further comprises a vacuum breaking rod which is arranged on the vertical plate supporting column and is close to the cut-out position of the pole piece belt, and the vacuum breaking rod comprises a gas blowing hole which is arranged towards the belt and blows gas.

7. Auxiliary traction device according to claim 1, characterized in that: the auxiliary traction device also comprises a small roller component arranged close to the cut-in position of the pole piece belt, and the small roller of the small roller component is pressed towards the cut-in pole piece belt; and the small roller assembly comprises an adjusting seat with an adjustable position, and the small roller is rotatably arranged on the adjusting seat.

8. Auxiliary traction device according to claim 1, characterized in that: the auxiliary traction device also comprises a light blocking assembly arranged on one side of the non-adsorption surface of the pole piece belt; and the light blocking assembly comprises a protective cover, a light blocking radiating block arranged inside the protective cover, and a heat insulating pad arranged between the light blocking radiating block and the protective cover.

9. A laser cut tab system, comprising:

the pole piece belt conveying device drives the pole piece belt to be conveyed to a pole lug laser cutting area;

the laser is used for cutting the pole piece belt at the pole piece cutting area by laser;

auxiliary traction means as claimed in any one of claims 1 to 8, provided at the laser-cut tab area of the pole-piece strip transport means.

10. The laser cut tab system of claim 9 wherein: the pole piece belt conveying device comprises a cut-in roller and a cut-out roller for conveying the pole piece belt, and a front adsorption assembly and a belt adsorption traction assembly of the auxiliary traction device are arranged between the cut-in roller and the cut-out roller.

Technical Field

The invention relates to the field of processing of lithium battery tabs, in particular to an auxiliary traction device for cutting tabs by laser and a tab laser cutting system.

Background

With the wider and wider application of lithium batteries, enterprises are continuously enlarging the production scale in order to meet the use requirements of people. In addition, with the continuous advocation of energy conservation and environmental protection in the world, enterprises respond to the concept of energy conservation and environmental protection, most of produced electronic products use lithium batteries, and the multiple-use property of the lithium batteries accords with the concept of energy conservation and environmental protection, so that enterprises in various countries in the world are produced in large quantities. Currently, new energy policies are continuously opened in China, enterprises for producing lithium battery devices are endless, and the number of the enterprises is rapidly increased, so that the market competition of the lithium battery devices is more and more intense.

Although the lithium battery manufacturing industry has been rapidly developed, the cutting technology of the lithium battery tab has yet to be improved. On the one hand, the cutting of lithium battery tab has been the traditional mechanical cutting mode who adopts always, and it has following problem: 1. the cutting speed is slow; 2. the profile is not smooth and has burrs or small gaps; 3. the cut shape is difficult to adjust.

On the other hand, in order to improve the cutting efficiency and ensure the high-quality cutting of the lithium battery tab, particularly for the tab without fixed step pitch and the conditions that the cutting shape is frequently changed or continuously changed, the tab is subjected to laser cutting, and the tab has the advantage of no substitution. However, the laser also has the following problems in cutting the tab: 1. the pole piece is easy to shake in the cutting process; 2. the waste material after cutting can not be effectively discharged. Therefore, the laser cutting can not be stably and continuously produced, and the large-scale marketization is difficult to realize.

Disclosure of Invention

The invention aims to solve the technical problem that the conventional laser tab cutting auxiliary traction device and the conventional laser tab cutting system are provided to overcome the defects in the prior art, and the problem of the conventional laser tab cutting is solved.

The technical scheme adopted by the invention for solving the technical problems is as follows: the auxiliary traction device for cutting the tab by laser is provided, the pole piece belt conveying device drives the pole piece belt to convey and penetrate through a tab area for cutting by laser, the auxiliary traction device comprises a front adsorption component and a belt adsorption traction component which are arranged along the conveying direction of the pole piece belt, and the tab area for cutting by laser is arranged between the front adsorption component and the belt adsorption traction component; wherein, preceding adsorption component is including adsorbing the absorption piece that pastes tight pole piece area, the belt adsorbs the subassembly of drawing and includes along pole piece area direction of transportation synchronous operation's a plurality of belts to and provide the absorption module of negative pressure for each belt gap department.

Wherein, the preferred scheme is: the front adsorption assembly further comprises a negative pressure pipe, the negative pressure pipe is respectively connected with the adsorption holes in the adsorption block and the external vacuum assembly, and the external vacuum assembly provides negative pressure for the adsorption holes through the negative pressure pipe; wherein, the pole piece area is adsorbed by the adsorption hole and is attached to the adsorption block when passing through the front adsorption assembly.

Wherein, preferred scheme is, belt absorption pulling component includes: the vertical plate strut is used as a main bracket of the belt adsorption traction assembly; the driving shaft and the driven shaft are respectively arranged at two ends of the vertical plate strut, and the belt is sleeved between the driving shaft and the driven shaft to synchronously operate; and the driving module is connected with the driving shaft and drives the driving shaft to rotate.

Wherein, the preferred scheme is: the adsorption module comprises a vacuum cover, a cover opening of the vacuum cover is sleeved on the non-adsorption end face of the belt, and the external vacuum component is communicated with a negative pressure opening of the vacuum cover and provides negative pressure.

Wherein, the preferred scheme is: the running speed of the belt is greater than the conveying speed of the pole piece belt.

Wherein, the preferred scheme is: the belt adsorption traction assembly further comprises a vacuum breaking rod which is arranged on the vertical plate supporting column and is close to the cut-out position of the pole piece belt, and the vacuum breaking rod comprises a gas blowing hole which is arranged towards the belt and blows gas.

Wherein, the preferred scheme is: the auxiliary traction device also comprises a small roller component arranged close to the cut-in position of the pole piece belt, and the small roller of the small roller component is pressed towards the cut-in pole piece belt; and the small roller assembly comprises an adjusting seat with an adjustable position, and the small roller is rotatably arranged on the adjusting seat.

Wherein, the preferred scheme is: the auxiliary traction device also comprises a light blocking assembly arranged on one side of the non-adsorption surface of the pole piece belt; and the light blocking assembly comprises a protective cover, a light blocking radiating block arranged inside the protective cover, and a heat insulating pad arranged between the light blocking radiating block and the protective cover.

The technical scheme adopted by the invention for solving the technical problems is as follows: there is provided a laser cut tab system comprising:

the pole piece belt conveying device drives the pole piece belt to be conveyed to a pole lug laser cutting area;

the laser is used for cutting the pole piece belt at the pole piece cutting area by laser;

and the auxiliary traction device is arranged at the electrode lug laser cutting area of the pole piece belt conveying device.

Wherein, the preferred scheme is: the pole piece belt conveying device comprises a cut-in roller and a cut-out roller for conveying the pole piece belt, and a front adsorption assembly and a belt adsorption traction assembly of the auxiliary traction device are arranged between the cut-in roller and the cut-out roller.

Compared with the prior art, the auxiliary traction device for cutting the tab by laser has the advantages that the tab belt is weakened or even eliminated in laser processing at the tab laser cutting area by designing the auxiliary traction device for cutting the tab by laser, so that the stability of the tab laser cutting equipment is improved; waste materials after pole piece laser cutting are separated from the pole pieces in time through the belt adsorption traction assembly, and the waste materials are prevented from being discharged effectively; meanwhile, the negative pressure of the belt adsorption traction assembly timely sucks away dust falling on the belt after cutting, and dust accumulation is avoided.

Drawings

The invention will be further described with reference to the accompanying drawings and examples, in which:

fig. 1 is a schematic structural diagram of an auxiliary traction device based on a laser cutting tab system;

FIG. 2 is a schematic structural view of a front adsorbent assembly of the present invention;

FIG. 3 is a schematic diagram of the construction of a belt-suction traction assembly (belt-free structure) of the present invention;

FIG. 4 is a schematic diagram of the belt-adsorbing traction assembly (belt-mounting structure) of the present invention;

fig. 5 is a schematic front perspective view of a laser cut tab system of the present invention;

fig. 6 is a schematic side view of a laser cut tab system of the present invention;

FIG. 7 is a schematic view of the adjusting seat of the present invention;

fig. 8 is a schematic structural view of a laser cut tab system with a light barrier assembly of the present invention;

fig. 9 is a schematic structural view of the light barrier assembly of the present invention.

Detailed Description

The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

As shown in fig. 1, the present invention provides a preferred embodiment of an auxiliary traction apparatus for laser cutting a tab.

An auxiliary traction device for cutting a tab by laser is arranged at a tab area 320 of a tab belt conveying device for laser cutting, a laser 310 is aligned with the tab area 320 for laser cutting, and the tab belt 10 conveyed to the area by the tab belt conveying device is subjected to laser processing to realize the operation of cutting the tab by laser. For example, an area to be processed of the pole piece strip 10 is transported to the laser tab cutting area 320 by the pole piece strip transportation device, a tab is cut by laser, and then the next area to be processed is transported to the laser tab cutting area 320, and the transportation and the laser processing are repeated repeatedly. However, since there are problems of shaking and inefficient discharge of scraps during laser processing or transportation, it is necessary to provide an auxiliary drawing device to assist transportation and tensioning of the pole piece belt 10 during processing.

In this embodiment, the auxiliary traction device includes a front suction assembly 100 and a belt suction traction assembly 200 disposed along the transport direction of the tab belt 10, and a laser-cut tab region 320 is disposed between the front suction assembly 100 and the belt suction traction assembly 200; wherein, preceding absorption subassembly 100 includes that the absorption piece 110 of absorption clings to pole piece area 10, belt absorption draws subassembly 200 includes along the synchronous operation of pole piece area 10 direction of transportation a plurality of belts 260 to and provide the absorption module of negative pressure for each belt 260 gap department.

Specifically, in the transportation direction of the pole piece belt 10, the front adsorption assembly 100 is arranged at the cut-in position of the pole piece belt 10, the belt adsorption traction assembly 200 is arranged at the cut-out position of the pole piece belt 10, the pole piece belt 10 passes through the cut-in position of the pole piece belt 10 and passes through the laser cutting tab area 320 under the transportation of the pole piece belt transportation device, and then is cut at the cut-out position of the pole piece belt 10, and when passing through the laser cutting tab area 320, the laser 310 performs the laser cutting tab operation. In the process of cutting the pole lug by laser, an auxiliary traction device is arranged, so that the problems of shaking of the pole piece in the cutting process and dredging of waste materials are effectively solved.

And the pole piece belt 10 is close to the front adsorption component 100 at the cut-in position under the transportation of the pole piece belt transportation device, is adsorbed and attached tightly by the adsorption block 110, and is matched with the belt adsorption traction component 200, so that the shaking of the pole piece belt 10 is weakened or even eliminated when the laser processing is carried out at the position of the laser cutting pole lug area 320, and the welding accuracy is improved. And the pole piece belt 10 is transported by the pole piece belt transporting device, the traction assembly 200 is adsorbed by the belt before the cutting position, dust falling on the belt 260 after cutting is absorbed, and the problem that waste materials cannot be effectively discharged is avoided.

As shown in FIG. 2, the present invention provides a preferred embodiment of a front suction assembly.

The front adsorption assembly 100 further comprises a negative pressure pipe 120, the negative pressure pipe 120 is respectively connected with the adsorption holes 111 on the adsorption block 110 and an external vacuum assembly, and the external vacuum assembly provides negative pressure for the adsorption holes 111 through the negative pressure pipe 120 to avoid dust accumulation; wherein, the pole piece strip 10 is absorbed by the absorption holes 111 and closely attached to the absorption block 110 when passing through the front absorption assembly 100. Specifically, the adsorption block 110 further includes a channel, the channel is respectively communicated with the negative pressure tube 120 and the adsorption hole 111, and the external vacuum component provides negative pressure for the adsorption hole 111 through the negative pressure tube 120 and the channel. Wherein, a plurality of the absorption holes 111 are arranged on one end surface of the absorption block 110 in an array manner; the upper end surface of the adsorption block 110 is provided with a mounting structure, such as a waist-shaped hole, which facilitates the front adsorption assembly 100 to be mounted on a bracket 700 for fixation.

The negative pressure on the surface of the adsorption block 110 enables the pole piece strip 10 to cling to the surface of the adsorption block 110, so that the pole piece strip 10 cannot shake in the laser cutting pole lug area 320, particularly when the laser 310 emits laser to process the pole piece strip 10.

As shown in fig. 3 and 4, the present invention provides a preferred embodiment of a belt-suction traction assembly.

Belt adsorbs pulls subassembly 200 still includes riser pillar 220, driving shaft 232, driven shaft 231 and drive module 240, driving shaft 232 and driven shaft 231 set up respectively at the both ends of riser pillar 220, and parallel arrangement, belt 260 cover is established and is in order to carry out synchronous operation between driving shaft 232 and driven shaft 231, riser pillar 220 adsorbs the main part support of pulling subassembly 200 as the belt, drive module 240 is connected with driving shaft 232 and drives driving shaft 232 and rotate.

Specifically, the driving module 240 drives the driving shaft 232 to rotate at one end of the vertical plate pillar 220, and drives the driven shaft 231 at the other end to rotate together through the belt 260, so that the belt 260 moves towards the rolling direction of the driving shaft 232 at the vertical plate pillar 220, and a negative pressure area is formed on the front end surface of the belt adsorption traction assembly 200. Preferably, a plurality of belts 260 are arranged between the driving shaft 232 and the driven shaft 231 side by side, a gap is formed between any adjacent belts 260, and the adsorption module forms a negative pressure environment in the vertical plate pillar 220, so that the front end surface of the belt adsorption traction assembly 200 forms a negative pressure area through the gap of the belts 260. Not only adsorbs pole piece area 10 through belt 260, improves the stability of pole piece area 10 when the laser beam machining operation of laser cutting utmost point ear region 320, and pole piece area 10 can also be with the waste material separation after the processing.

In this embodiment, the belt 260 is preferably a round belt. The circular belt is one of belt transmission belts, and the cross section of the circular belt is circular.

In this embodiment, the suction module includes a vacuum cover 212, a cover opening of the vacuum cover 212 is sleeved on the non-suction end surface of the belt 260, and the external vacuum component is communicated with the negative pressure opening 211 of the vacuum cover 212 and provides negative pressure. Specifically, the external vacuum assembly is opened to provide negative pressure, negative pressure is formed in the vacuum cover 212 through the negative pressure port 211 of the vacuum cover 212, negative pressure is formed at the non-adsorption end face of the cover-opening belt 260, external air flows in through the gap at the adsorption end face of the belt 260 and enters the vacuum cover 212 through the gap at the non-adsorption end face of the belt 260 to adsorb the pole piece belt 10 passing through the adsorption end face of the belt 260; meanwhile, the scraps and chips after laser processing are adsorbed and separated from the pole piece tape 10.

Further, the belt adsorption traction assembly 200 further comprises a vacuum breaking rod 251 which is arranged on the vertical plate support 220 and close to the cut-out part of the pole piece belt 10, and the vacuum breaking rod 251 comprises a gas blowing hole 2511 which is arranged towards the belt 260 and blows gas. The air flow blown out through the air blowing holes 2511 of the vacuum breaking bar 251 blows out the adsorbed waste and debris close to the cut of the pole piece strip 10 to prevent the waste and debris from winding around the belt 260 to the non-adsorption end face and blocking the negative pressure air flow. Preferably, the vacuum breaking rod 251 is provided with a plurality of air blowing holes 2511, the air blowing holes 2511 are all arranged towards the cutting position of the pole piece strip 10, and the vacuum breaking rod 251 is communicated with an external blowing device through an air vent 252 so as to realize air outlet of the air blowing holes 2511; and the blowing size is adjustable, the sizes of the pole piece belts 10 or the processing waste materials with different thicknesses are met, the waste materials can be prevented from being wound to the rear along with the belt 260, and smooth blanking of the waste materials is guaranteed.

In this embodiment, the running speed of the belt 260 is greater than the transport speed of the pole piece belt 10. The friction between the belt 260 and the pole piece belt 10 can further cause the waste materials and the scraps of the pole piece belt 10 to fall off, and the falling efficiency of the waste materials and the scraps is improved.

In this embodiment, the driving module 240 controls the rotation of the driving shaft 232 through the meshing rotation of the gears. For example, the motor shaft of the driving module 240 is provided with a gear 251, and the outer side of the driving shaft 232 is also provided with a gear 252, which are engaged with each other to rotate the driving shaft 232 through the driving module 240.

As shown in FIGS. 5, 6 and 7, the present invention provides a preferred embodiment of a pocket assembly 400.

The auxiliary traction device also comprises a small roller component 400 arranged close to the cut-in position of the pole piece belt 10, wherein the small roller of the small roller component 400 is pressed towards the cut-in pole piece belt 10; and, the small roller assembly 400 includes an adjustable adjusting seat 410, and the small roller is rotatably disposed on the adjusting seat 410.

Specifically, by adjusting the position of the adjusting seat 410, i.e. the front-back position, and adjusting the position of the small roller facing the pole piece belt 10, an offset angle (i.e. an included angle formed by the cutting-out direction of the pole piece belt conveyer and the cutting-in direction of the front adsorption assembly 100, preferably 3 to 5 degrees) is generated between the pole piece belt 10 and the front adsorption assembly 100 from the pole piece belt conveyer, so as to increase the tightness of the pole piece belt 10, prevent the generation of waves, make the laser-cut tab area 320 smoother and more tensile, and thereby improve the precision performance of laser processing. Wherein the pocket roller assembly 400 is rotatably provided on the adjustment seat 410, preferably at an end edge thereof as an endmost position; and, the small roller assembly 400 should include a small roller 420, a shaft core and a bearing, the bearing is disposed at the hole sites 411 at both ends of the adjusting seat 410, the small roller 420 is fixed on the shaft core, and is fixed on the inner shaft of the bearing through the shaft core, so as to realize self-transmission.

Preferably, the adjusting base 410 is adjustably positioned on the bracket 700. The adjusting seat 410 is provided with a kidney-shaped hole 412, and the position of the adjusting seat 410 relative to the bracket 700 is adjusted through the kidney-shaped hole 412 and the position of the mounting screw.

As shown in fig. 8 and 9, the present invention provides a preferred embodiment of a light barrier assembly 600.

The auxiliary traction device further comprises a light blocking assembly 600 arranged on one side of the non-adsorption surface of the pole piece belt 10; and, the light blocking assembly 600 includes a shield cap 610, a light blocking heat dissipation block 620 disposed inside the shield cap 610, and a heat insulating mat 630 disposed between the light blocking heat dissipation block 620 and the shield cap 610.

In particular, the pole piece strip 10 passes through an auxiliary traction device. One side face is taken as an adsorption face to be adsorbed by an auxiliary traction device, meanwhile, laser 310 is subjected to laser processing towards the adsorption face of the pole piece belt 10, in order to protect laser (laser penetrating through the pole piece belt 10) and prevent personnel from directly facing the laser or being influenced by the light of the laser, a light blocking component 600 on the non-adsorption face side of the pole piece belt 10 is preferably arranged, and the laser 310, a laser cutting tab area 320 and the light blocking component 600 form a straight line. Wherein, the protection casing 610 is the subassembly 600 main part that is in the light, not only as the main part framework, still isolate the radiating block 620 that is in the light, the radiating block 620 that is in the light sets up inside (can partially set up inside, also can all set up inside), block laser's light, still absorb and dispel the heat to laser's heat, avoid the heat to concentrate, damage subassembly 600 that is in the light, heat insulating mattress 630 sets up between radiating block 620 and the protection casing 610 that is in the light, prevent that the heat of radiating block 620 that is in the light from leading to the protection casing 610, avoid personnel's misconnection to contact.

The energy of the laser after cutting the pole piece strip 10 can burn the skin of a person, and the person is protected by the light blocking and heat dissipating block 620 in order to prevent the person from being unintentionally placed in a dangerous area behind the laser cutting pole piece strip 10; because of the inherent characteristics of laser, the energy is highly concentrated and continuously operated, so the material of the light-blocking heat dissipation block 620 cannot only consider the melting point, but also considers the heat dissipation of the material, such as the high thermal conductivity and higher melting point of aluminum; the shield 610 prevents a person's hand from directly contacting the light blocking heat dissipating block 620, and thus, is isolated from the light blocking heat dissipating block 620.

As shown in fig. 5 and 6, the present invention provides a preferred embodiment of a laser cut tab system.

A system for cutting a tab by laser comprises a pole piece belt conveying device, a laser 310 and an auxiliary traction device, wherein the pole piece belt conveying device drives a pole piece belt 10 to be conveyed to a tab laser cutting area 320; the laser 310 cuts the pole piece strip 10 in the pole piece cutting area 320; the auxiliary traction device is arranged at the laser-cut tab area 320 of the pole piece belt transport device.

Specifically, the pole piece belt conveying device comprises a cut-in roller 510 and a cut-out roller 520 for conveying the pole piece belt 10, and the front suction assembly 100 and the belt suction assembly 200 of the auxiliary traction device are arranged between the cut-in roller 510 and the cut-out roller 520. The tab tape 10 is cut from the cut-in roller 510, passes through the front suction assembly 100, the laser-cut tab region 320, and the belt suction traction assembly 200 in sequence, and is cut from the cut-out roller 520.

If the front adsorption component 100 and the belt adsorption traction component 200 are not arranged, the pole piece belt 10 has the problems of jitter and ineffective discharge of waste materials at the cutting-in and cutting-out positions, and especially in the laser processing process of the laser cutting pole lug area 320, the jitter can affect the laser processing, which is a main reason for the incapability of stably and continuously producing the laser cutting pole piece belt 10. Through preceding absorption subassembly 100 and belt absorption traction assembly 200, when making laser cutting utmost point piece area 10, can stabilize continuous operation, avoid shake and waste material can not effectively discharge the problem, promote the basis that laser cutting utmost point ear equipment was big commercial in batches, make the lithium cell trade rapid development.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, but rather as embodying the invention in a wide variety of equivalent variations and modifications within the scope of the appended claims.