Winding device and square power battery cell winding machine

Abstract

The invention provides a winding device and a square power battery cell winding machine. The winding device is provided with a winding station, a rubberizing station and a discharging station. The winding device comprises a winding head, and the winding head is provided with three winding needles. The three winding needles are respectively located at the winding station, the rubberizing station and the discharging station, and the winding needles are provided with limiting pieces. The winding device further comprises a first limiting unit which comprises a first rail. The first rail is arranged at the front end of the winding head. The first rail extends from the winding station to the discharging station in the rotating direction of the winding head. A first limiting face is formed on theface, facing the front end of the winding head, of the first rail. The projection of the first end of the first rail and the projection of the limiting piece at the winding station are staggered in the axial direction of the winding head, and the projection of the second end of the first rail and the projection of the limiting piece at the discharging station are staggered. The invention furtherprovides the square power battery cell winding machine provided with the winding device. The winding device and the square power battery cell winding machine can prevent the winding needles from moving in the axial direction of the winding needles in the reversing process of the winding head.

Description

technical field [0001] The invention relates to the technical field of electric core production equipment, in particular to a winding device and a square power electric core winding machine provided with the winding device. Background technique [0002] The winding of the existing lithium battery cell is mainly completed by the cell winding machine, that is, the cell winding is formed by laminating, winding, and pasting the positive pole piece, the negative pole piece and the separator in a certain order. Lithium battery cells. Among them, the above-mentioned positive pole piece, negative pole piece and diaphragm winding and termination glue treatment all need to be carried out by the winding device of the cell winding machine. The existing winding device generally has a winding station, glue application The working station and the unloading station, and the winding device includes a winding head, three winding needles, a reversing unit, a push-close needle unit, a needle-o...

AI Technical Summary

Problems solved by technology

However, since the existing winding device is not equipped with a mechanism to limit the winding needle during the position switching process, and the pushing and closing needle unit and the opening and pulling unit do not rotate with the winding head, the winding needle is following During the rotation of the winding head, the winding needle is easy to move along its own axis due to vibration, so that after the winding head completes the reversing, it is difficult to accurately align and switch the actuator end of the push-close needle unit to the winding station It is difficult for the execution end of the opening and pulling unit to accurately control the needle rolling and switching to the unloading station.

In addition, since the winding needle does not need to open or close the needle, pull the needle or push the needle at the glue application station, the existing winding device is not equipped with a corresponding operating mechanism at the glue application station. The needle is operated and limited, so that the roll needle at the gluing station is easy to move along its own axis during the gluing process

Furthermore, during the position switching process of the winding needle, it is also easy to collide with the push-close needle unit or the open-needle pull unit due to the deviation of its own position, which poses a safety hazard

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