Diaphragm unwinding device

Abstract

The invention relates to a diaphragm unwinding device, which is characterized in that it includes a frame, an unwinding mechanism for installing a diaphragm material roll, a tension control mechanism for adjusting the unwinding tension of the unwinding mechanism, a sheet storage mechanism, and a device installed on the frame. Several passing rollers; the film storage mechanism includes a moving part equipped with at least one passing roller and a driving part that drives the moving part to reciprocate and linearly move so as to keep the tension of the diaphragm within a threshold range. The unwinding mechanism includes a partition base slidably arranged on the frame, on which a roll roll is installed, and the roll roll is connected with a roll unwinding driving device that drives the roll roll to rotate. The tension control mechanism includes a swing roller installed on the frame and a swing roller driving device that controls the rotation of the swing roller to adjust the tension of the discharge material. The invention has a simple structure and can realize tension balance to ensure the quality of laminations.

Description

technical field [0001] The invention relates to a diaphragm unwinding device, in particular to a diaphragm unwinding device for a lithium battery stacker, and belongs to the technical field of lithium battery automatic manufacturing equipment. Background technique [0002] When the traditional unwinding mechanism is used in a high-speed lamination machine, there will be two serious problems: one is that when the diaphragm changes from retraction to release or from release to retraction, a huge impact force is generated, and the diaphragm is easily broken The second is that the response speed of the gravity buffer mechanism or the low-friction cylinder buffer mechanism is too slow, and the redundant diaphragm cannot be retracted in time, resulting in a loose state of the diaphragm and irregular stacking of the diaphragm. Among the diaphragm unwinding mechanisms of traditional laminators, the first type has neither a buffer mechanism nor a buffer mechanism; the second type has...

AI Technical Summary

Problems solved by technology

[0002] When the traditional unwinding mechanism is used in a high-speed lamination machine, there will be two serious problems: one is that when the diaphragm changes from retraction to release or from release to retraction, a huge impact force is generated, and the diaphragm is easily broken ; Second, the response speed of the gravity buffer mechanism or the low-friction cylinder buffer mechanism is too slow, and the redundant diaphragm cannot be retracted in time, resulting in a loose state of the diaphragm and irregular stacking of the diaphragm

However, this method has many structures on the one hand; on the other hand, the use of spring control has the problem of low precision, and the rotation of the tension control mechanism cannot control the tension well, and there will be tension jumps, which will eventually affect the quality of the laminations.

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