Lithium battery pole piece prime coating machine capable of repeatedly positioning and coating

Abstract

The invention discloses a lithium battery pole piece prime coating machine capable of repeatedly positioning and coating. The machine comprises an unwinding mechanism and a winding mechanism, wherein a positioning and feeding mechanism is arranged between the unwinding mechanism and the winding mechanism, a film length adjusting mechanism is arranged between the positioning and feeding mechanism and the winding mechanism, the film length adjusting mechanism comprises a motor, the motor is fixed to the front face of a mounting plate, an output shaft of the motor is fixedly connected with a transmission rod, the two ends of the surface of the transmission rod are fixedly connected with baffles correspondingly, the opposite faces of the two baffles are rotationally connected with lead screws by means of connecting pieces correspondingly, and the surfaces of the lead screws are in threaded connection with movable blocks correspondingly. The machine relates to the technical field of lithium battery production. According to the lithium battery pole piece prime coating machine capable of repeatedly positioning and coating, the problems that when a pattern deviation range of a lithium battery pole and the prime coating machine in the prior art is large, the positioning and feeding mechanism cannot adjust a base material coated with patterns to a proper position and cannot control the coating precision to be + / -0.5 mm are solved, and the color register precision can be ensured.

Description

technical field [0001] The invention relates to the technical field of lithium battery production, in particular to a lithium battery pole piece undercoating machine that can be repeatedly positioned and coated. Background technique [0002] Traditional gravure bottom coating equipment only needs to coat the front and back patterns at one time, and requires that the front and back patterns have a relative alignment relationship. With the deepening of battery technology research, in order to improve battery quality, a new process has been developed. The previously mentioned gap area after the first coat is subjected to the second coat. [0003] In order to achieve double-sided coating, the announcement number is CN105921362A, the patent name is "a coating machine front and back coating alignment system" and the announcement number is CN106626723A, the patent name is "a double-sided foam printing machine Although the Chinese patents of "propose double-sided coating and double...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a lithium battery pole piece primer that can be repeatedly positioned and coated. The gap area between two adjacent patterns on the surface is coated, and the structure of the whole machine is designed scientifically and rationally, so that the gap can be made by combining the positioning feed mechanism and the film length adjustment mechanism with other components. The coating accuracy deviation of the area is controlled within plus or minus 0.5mm, which has the advantages of high coating accuracy and small coating deviation, which effectively solves the coating accuracy deviation when the existing primer coater coats the gap area All are above 1cm and cannot guarantee the operation accuracy of the equipment

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