Troubleshooting Of Stitching Out Of Needle Eye In Type 781 Keyhole Machine
781型鎖眼機始縫時針眼脫線故障處理 781型鎖眼機在始縫時常會出現上線從針眼中脫出從而導致鎖眼失敗,造成這種現象的原因是因為在面線剪刀張開之前,底、面線沒有正確絞合在面料上,這一故障并不是某一部位的問題導致的,需要從幾方面進行檢查、調整。
781型鎖眼機始縫時針眼脫線故障處理 (1)檢查在停機時松線鋼絲能否將面線打松5~7mm,它的作用是鎖眼結束后將面線打松,當進行下一個鎖眼時,配合挑線桿給旋梭提供足夠的面線,防止由于面線供線量的減少而導致面線從剪刀中脫出。(2)當面線剪刀剪斷面線并夾住線頭時,可用手拉一下面線,如果輕易就將面線從面線剪刀中拉出,說明面線剪刀的夾緊力較松。調整方法:可以將面線剪刀上的夾線板卸下,稍許弄彎后再重新裝回,使面線剪刀確實夾住線頭。同時,要檢查面線剪刀在完全關閉時與最大限位應保持0.5mm的量,面線剪刀關閉不到位也是夾不住線頭的原因之一。 (3)檢查機針是否彎曲,面線穿線是否錯誤及面線質量是否較差,因為如果在面線剪刀張開之前存在跳針現象,那么當剪刀張開時面線就會從針孔中脫出。調整方法:正確調整機針與旋梭的配合時間及面線剪刀的張開時間,使始縫在第5~7針時面線剪刀緩緩張開。(4)檢查底線的長度是否足夠,如果底線長度不夠,那么始縫時底線和面線就不能正確絞合而導致面線從針孔中脫出,底線的標準長度以露出梭芯套壓線簧36mm為準,如果長度不夠可以調節底線撥線板的角度,使撥線量變大。
The above points are for reference only. In actual work, equipment needs to be analyzed and judged before being adjusted.
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