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缝纫机在使用过程中跳针断线的原因及处理方法 跳线是缝纫机在缝合过程中,由于机床底部的钩子无法勾取面线或面线被勾取后又滑脱,无法连续形成线步的一种现象。这主要是由于机针与钩子的运动时间或运动位置不吻合所引起的。当然,也有可能是机针无法形成线圈而导致线步跳线。出现跳线,可以从以下几方面查找原因：一、机针问题 检查面线有无穿错或少穿某个过线位。 检查机针安装是否正确,如机针长槽装反或装歪斜等。 检查机针型号是否适用、针杆调节的高度是否准确,以及检查机针是否贴紧针杆顶部。机针安装过高或过低,都会影响钩子取线。 检查机针是否歪曲。使用歪曲的机针缝合时,由于形成的线圈远离钩子,钩子无法勾取缝线。轻微弯曲的机针很难用肉眼直接辨认出来,可以将机针放在平台上转动,即可辨别。 检查机针与钩子运动的时间是否相吻合。机针与钩子的运动时间完全配合,钩子才能准确勾取缝线。 检查机针与缝纫线的粗细是否相适宜。大号的机针配用幼细的缝纫线也会导致跳线。这是因为大号机针的针眼较长、较宽,刺开面料的孔位较大,使幼细缝纫线有较大的空间移动,若超出钩子勾线的范围,就会出现跳线; 检查机针针眼有无因熔粘了化纤缝纫周口职业技术学院
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