Square power cell winding machine

Abstract

The invention provides a square power cell winding machine. The winding machine comprises a rack and a winding device, the winding device is provided with a winding station, a rubberizing station anda discharging station. The winding device comprises a winding head which is rotatably mounted on the rack; three first winding needles are arranged on the winding head; the square power cell winding machine further comprises a guiding device, the guiding device comprises a pressing roller and an X-axis and Y-axis driving unit. The pressing roller is parallel to the first winding needle; the pressing roller has a first position and a second position; in the feeding direction of the first winding needle, the first position is located at the upstream end of the winding station, and the second position is located between the rubberizing station and the winding station, and the X-axis and Y-axis driving unit can drive the pressing roller to move between the first position and the second position along the X axis and the Y axis; a limiting piece is arranged on the first winding needle, the winding device further comprises a first limiting unit, the first limiting unit is used for enabling the winding needle on the winding head to move in the axial direction of the winding needle in the reversing process of the winding head, and the square power cell winding machine has the advantage of high production efficiency.

Description

technical field [0001] The invention relates to the technical field of battery production equipment, in particular to a square power cell winding machine. Background technique [0002] The winding of the existing lithium battery cells is mainly completed by the cell winding machine. The cell winding machine forms the lithium battery by stacking, winding, and pasting the positive pole piece, the negative pole piece and the separator in a certain order. battery cells. In order to improve the production speed of the cell winding machine, the existing cell winding machine generally adopts a three-station winding device, that is, the winding device has a winding station, a glue station and a blanking station. The device includes a winding head, three winding needles, a reversing unit, a needle pushing and closing unit, a needle opening and pulling unit and a driving unit. The positions of the winding station, the gluing station and the unloading station are switched; the push-c...

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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