Extraction needle mechanism of double-station winder

Abstract

The invention discloses an extraction needle mechanism of a double-station winder. The extraction needle mechanism comprises a winding head base, a fixing frame, a transverse driving device and a transverse moving table, wherein the winding head base is provided with two needle winding shafts; the front ends of the two needle winding shafts are provided with needle winding devices; the winding head base is further provided with a needle winding shaft driving transmission assembly; the transverse moving table can move along the axis direction of each needle winding shaft on the fixing frame under the driving action of the transverse driving device, and is provided with a longitudinal moving table and a longitudinal driving device; the longitudinal moving table can move on the longitudinal moving table under the driving action of the longitudinal driving device; and the longitudinal moving table is provided with a needle claw. Due to the adoption of an extraction needle displacement way, the equipment efficiency is increased, full-speed running of station reversing is realized, and running efficiency of equipment is increased; and radial movement of an axially-driven winding needle is realized, and functional integration realization of a winding head and a winding needle is ensured.

Description

technical field [0001] The invention relates to a lithium-ion battery winding machine, in particular to a pulling-out needle mechanism of a double-station winding machine with reliable functions. Background technique [0002] Winding is an essential process in the production process of lithium-ion batteries, and it is also a key process that directly affects various performances such as battery safety, capacity, and consistency. [0003] Winding is to continuously assemble the prepared positive and negative electrode sheets and separator materials on a winding needle of a certain specification to complete the process of forming the main body of the battery, and to control the winding accuracy of the positive and negative electrode sheets and separators. within the tolerance range required by the process. The winding transmission and needle withdrawal mechanism is one of the core components of the automatic winding machine, and it is a mechanism that combines the battery pol...

AI Technical Summary

Problems solved by technology

Two-needle two-station winding drive and needle-drawing mechanism are generally different due to different design methods of the needle winding device. The needle winding sheets are stacked. The two-needle two-station mechanism is relatively simple, and the transmission method is different. However, due to the limitations of the needle winding method, the overall structure is more limited; there is also a two-way needle pulling method. Due to the width of the square needle winding, the winding positioning accuracy is low or the force of the needle is uneven.

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