A continuous laser cutting device with dust removal function

Abstract

The invention belongs to the technical field of laser cutting and particularly relates to a laser continuous cutting device having a dedusting function. The laser continuous cutting device comprises a dedusting mechanism and a laser cutting mechanism. The laser cutting mechanism comprises a laser head and a cushion seat module. The cushion seat module comprises a center shaft, a rotating roller and a fixed roller. The rotating roller and the fixed roller have the same radius, the fixed roller is connected with the rotating roller through the center shaft and is fixed relative to the center shaft, and the rotating roller can rotate relative to the center shaft. When a pole piece is cut, the pole piece adheres to the rotating roller by means of tension provided by mechanical transmission during the feeding, and a to-be-cut pole lug reserved area on the pole piece adheres to the fixed roller. The linear velocity of the rotating roller and the feeding speed of the pole piece are the same, so that no sliding friction occurs between the pole piece and the rotating roller, and the damage to the pole piece caused by the sliding friction between the pole piece and the rotating roller is avoided.

Description

technical field [0001] The invention belongs to the technical field of laser cutting, and in particular relates to a continuous laser cutting device with dust removal function. Background technique [0002] In recent years, the application of lithium-ion batteries has become more and more extensive, and the increasing market demand has promoted the development of lithium-ion battery manufacturing. Among them, in the battery production process, the tabs can be welded or laser cut pole pieces get. Compared with laser cutting pole pieces, the method of welding tabs is prone to false welding, and the stability and reliability are relatively low. In the process of laser cutting pole pieces, dust will be generated. If these dusts are attached to the pole piece coil and brought into the subsequent process, or even involved in the battery, it is easy to pierce the isolation film in the battery cell, causing the battery micro Short circuit, and even lead to safety hazards such as b...

AI Technical Summary

Problems solved by technology

[0005] First, since the processing mode is continuous feeding, the adsorption of the pole piece on the surface of the cutting backing plate will cause friction of the active material on the surface of the pole piece, causing damage to the pole piece, scratches, affecting the performance of the battery, and even affecting the safety of the battery in severe cases

[0006] Second, the backing plate is quickly polluted and requires frequent replacement and cleaning, which is time-consuming and labor-intensive

[0007] Third, since the tension of the pole piece mainly depends on the tension effect, the vibration of the pole piece is also caused by the tension fluctuation. During the continuous feeding process of the pole piece, there is relative movement between the pole piece and the cutting backing plate. The cutting pads are suspended in the air, giving the pole piece a vibration space, making the vibration of the pole piece out of focus and affecting the laser cutting effect

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