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老式包缝机跳线怎么办
更新时间: 2020-08-19 00:00:00  

1、下弯针勾不到线,是下弯针没有勾到机针针线环,解决办法:调整机针和下弯针相对位置,使下弯针能插入机针线环;

2、 下弯针勾不到上弯针线环,是上弯针没有挂上下弯针的线环,解决办法:调整上弯针位置,使上弯针能挂下弯针的线环;

3、 机针没有插入上弯针送上来的线环,需调整上弯针和机针的相对位置。

关键词: 老式 怎么办

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