The utility model relates to a needle winding mechanism of a lithium ion battery winding machine, which comprises a needle seat, a left outer coiling needle and a right outer coiling needle. An inner pin, a spring sheet, a screw, a limit sheet and a bullet block are installed between the left outer coiling needle and the right outer coiling needle. The inner side of the left outer coiling needle is provided with an installation groove and an installation hole. The installation groove is located below the installation hole, and the screw rod is connected with the installation hole through the The upper and lower parts of the cartridge block are clamped by the positioning step. The lower part of the cartridge block is embedded in the installation slot. The left outer coil needle, the spring plate, the screw and the positioning plate cooperate with each other to make the cartridge block elastically clamp the isolation film. Compared with the existing technology, the structure design is more reasonable, and the upper part of the cartridge block is clamped by the positioning step. The step is compacted by the limiting plate, and the lower positioning step is embedded in the installation groove. The bullet block will not fall off and scratch the isolation film, which ensures the product quality, and the strength of the left outer coil needle is guaranteed, and the service life is long.
【技术实现步骤摘要】
一种锂离子电池卷绕机的卷针机构
本技术涉及锂离子电池卷绕机领域,具体涉及一种锂离子电池卷绕机的卷针机构。
技术介绍
锂离子电池卷绕机,是将正极、负极、隔离膜卷绕组合成型一体作为电池的机器,在锂离子电池卷绕机的众多组成机构中,卷针机构是最重要的其中一个机构起着夹紧隔离膜、极片以便后续旋转卷绕加工的作用,现有的卷针机构主要是依靠内部的弹块和内夹针来夹紧隔离膜,弹块依靠两个螺丝固定在外卷针内部,当卷绕完成后需要将卷针上形成的电芯拔下来,在抽拔的时候弹块头部螺丝孔边缘和螺丝凹槽处容易刮到隔离膜,造成隔离膜损坏而导致电芯不良,而且由于弹块是依靠两个螺丝固定,外卷针要开设与螺丝位置相对应的螺丝孔,外卷针向下逐步变薄,开孔会导致外卷针强度降低,受力时容易变形,造成使用寿命短,需经常更换。
技术实现思路
针对现有技术中存在的卷针机构设计不合理、易损坏隔离膜、强度不足、易变形、使用寿命短等技术问题,本技术提供了一种锂离子电池卷绕机的卷针机构,具体技术方案如下:一种锂离子电池卷绕机的卷针机构,包括卷针座、左外卷针和右外卷针,卷针座左方固定安装左外卷针,卷针座右方固定安装右外卷针,左外卷针、右外卷针之间安装有内夹针、弹簧片、螺丝、限位片和弹块,内夹针上端固定安装于卷针座而下端伸入到左外卷针、右外卷针之间,左外卷针内侧设有安装槽和安装孔,安装槽位于安装孔下方,螺丝的杆部穿过限位片螺纹连接安装孔而头部顶着限位片,安装槽内部安装弹簧片,弹块上下端设有定位台阶,弹块的上定位台阶被限位片压紧限位,弹块的下定位台阶嵌入安装槽中,弹簧片驱动弹块移动,弹块与内夹针相配合弹性夹紧隔离膜。作为本技术的一种 ...
【技术保护点】
1.一种锂离子电池卷绕机的卷针机构,包括卷针座、左外卷针和右外卷针,卷针座左方固定安装左外卷针,卷针座右方固定安装右外卷针,其特征在于:左外卷针、右外卷针之间安装有内夹针、弹簧片、螺丝、限位片和弹块,内夹针上端固定安装于卷针座而下端伸入到左外卷针、右外卷针之间,左外卷针内侧设有安装槽和安装孔,安装槽位于安装孔下方,螺丝的杆部穿过限位片螺纹连接安装孔而头部顶着限位片,安装槽内部安装弹簧片,弹块上下端设有定位台阶,弹块的上定位台阶被限位片压紧限位,弹块的下定位台阶嵌入安装槽中,弹簧片驱动弹块移动,弹块与内夹针相配合弹性夹紧隔离膜。
【技术特征摘要】
1.一种锂离子电池卷绕机的卷针机构,包括卷针座、左外卷针和右外卷针,卷针座左方固定安装左外卷针,卷针座右方固定安装右外卷针,其特征在于:左外卷针、右外卷针之间安装有内夹针、弹簧片、螺丝、限位片和弹块,内夹针上端固定安装于卷针座而下端伸入到左外卷针、右外卷针之间,左外卷针内侧设有安装槽和安装孔,安装槽位于安装孔下方,螺丝的杆部穿过限位片螺纹连接安装孔而头部顶着限位片,安装槽内部安装弹簧片,弹块上下端设有定位台阶,弹块的上定位台阶被限...
【专利技术属性】
技术研发人员:李学军,李雪彬,
申请(专利权)人:东莞泓宇智能装备有限公司,
类型:新型
国别省市:广东,44
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