Li-ion battery separator slitting machine

Abstract

The invention discloses a Li-ion battery separator slitting machine. The Li-ion battery separator slitting machine comprises an edge correcting platform mechanism, wherein a pneumatic shaft unwinding mechanism is arranged at the upper end of the edge correcting platform mechanism; the upper end at the right side of the pneumatic shaft unwinding mechanism is provided with a flaw detecting platform; the lower end at the right side of the flaw detecting platform is provided with a transition mechanism; the right end of the transition mechanism is provided with a winding mechanism; the winding mechanism comprises a winding rack; the upper end of the winding rack is provided with a winding main roller; the left side and the right side of the winding main roller are provided with differential slip ring locking devices; the winding main roller is provided with a separator back cutting-up mechanism and a separator front cutting-up mechanism; the lower end of the separator back cutting-up mechanism and the lower end of the separator front cutting-up mechanism are each provided with a roller main transmission mechanism; and the right side of the separator front cutting-up mechanism is provided with a circular knife hobbing device. The Li-ion battery separator slitting machine can achieve zero-tension unwinding, stable separator winding and regular end surfaces, and can eliminate wrinkle stripes on the surface of the separator, so that the slit and unwound separator is more flat in surface, and different needs of clients can be met, and therefore, the Li-ion battery separator slitting machine can be widely applied in the lithium battery industry.

Description

technical field [0001] The invention relates to the technical field of slitting machines, in particular to a lithium battery diaphragm slitting machine. Background technique [0002] With the rapid development of the new energy industry, the production demand for lithium battery separators and automotive power battery separators is large. More and more manufacturers use domestic separators. The separators required for lithium batteries need to be cut into corresponding widths according to the battery specifications. The cut separators are: Dry film, wet film, and ceramic film require fast cutting speed, neat sides, and low winding tension. Diaphragm slitting machines are indispensable equipment for the production of lithium batteries. [0003] At present, there are two types of diaphragm slitters on the market. One is imported machinery with fast cutting speed. The effect is good and the price is expensive. Few companies are willing to buy it. The other is modified by packag...

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Problems solved by technology

[0003] At present, there are two types of diaphragm slitters on the market. One is imported machinery with fast cutting speed. The effect is good and the price is expensive. Few companies are willing to buy it. The other is modified by packaging materials and equipment. The effect is poor, the side of the diaphragm is uneven, and the tension is too large. Although the slit diaphragm can be used roughly before, but the current market has higher and higher requirements for the capacity of lithium batteries, so the production process of lithium batteries must be strictly controlled. Cutting is one of the sources for the production of lithium battery materials

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