斷線是編織袋縫紉中(zhong)最(zui)常(chang)遇到的故(gu)障了，縫線質量不(bu)合要求，機器調整不(bu)當(dang)，過線零(ling)件有銳口、操作方法有問題、機針冷卻不(bu)充分等等，均(jun)會導致斷(duan)線。當(dang)用(yong)鎖

式線(xian)跡編織袋縫(feng)紉機縫(feng)制厚薄不均的產(chan)品遇(yu)到斷線(xian)排故時，除了逐(zhu)一考慮分(fen)析上(shang)述種(zhong)種(zhong)原因(yin)外，還(huan)應注意兩次(ci)鉤線(xian)引起的斷線(xian)。 

   縫紉(ren)機(ji)行業眾所周知，由于設計(ji)上(shang)分配動作周期的(de)(de)需要，鎖式線跡編(bian)織袋(dai)縫紉(ren)機(ji)上(shang)軸(zhou)與旋(xuan)梭的(de)(de)傳動比為1：2。即上(shang)軸(zhou)轉(zhuan)一周，旋(xuan)梭軸(zhou)要轉(zhuan)兩周。因此(ci)，在編(bian)織袋(dai)

縫紉過程中，機(ji)針(zhen)每刺料一次(ci)旋梭(suo)旋轉(zhuan)兩周，一周完成鉤擴(kuo)面(mian)線(xian)環動作，一周空轉(zhuan)，如(ru)果旋梭(suo)每周都會鉤住面(mian)線(xian)，即機(ji)針(zhen)刺料一次(ci)，旋梭(suo)鉤線(xian)兩次(ci)，則必將與面(mian)線(xian)的(de)

收放發生沖突，產生將縫線繃斷的現象。 

這種情(qing)況在(zai)縫制厚薄不均的縫料時(shi)是有可能出現的：其原因得從鎖式線跡的形成過程談起： 

   1、鎖式線跡形成過程簡述鎖式線跡是由面線與底線在縫料中相互交織而構成的。 編織袋縫紉機工作時，機針引帶面線穿過縫料，在到達下極限位置后，向上提升：由于縫料與縫線間存有摩擦力，因此面線未能隨機針同步提升，而是滯留在縫料下面，在彈性的作用下膨向機針兩側，形成環狀。 接著，旋梭的梭尖在運動過程中到達機針處，從面線環中穿過，并在繼續旋轉運動中，將鉤住的線環不斷擴大。繞至自身半徑處后，象跳繩那樣”躍”過擴大了的線環。 再往下的動作是挑線桿收線，送布牙送料為使這些動作有足夠的時間順利進行，旋梭仍以原速旋轉一周，但不再鉤線，僅僅空轉一圈。由于挑線桿的收線作用，原先被旋梭擴大并”躍”過的面線環迅速縮小，直至將旋梭梭心中引出的底線牽拉至縫料中，形成一次交織。 機針到達上極限位置后，再次向下引線刺料時，編織袋縫紉機周而復始，重復上述動作過程，從而在縫料上形成連續不斷有規律的鎖式線跡。 

   2、縫(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)料(liao)(liao)(liao)(liao)厚度(du)變(bian)化時(shi)(shi)(shi)鉤(gou)(gou)(gou)線(xian)(xian)(xian)(xian)時(shi)(shi)(shi)間(jian)的(de)(de)(de)(de)差(cha)異(yi) 調(diao)整編織袋縫(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)紉機(ji)(ji)的(de)(de)(de)(de)一(yi)(yi)次關鍵內容是(shi)調(diao)整所(suo)謂(wei)鉤(gou)(gou)(gou)線(xian)(xian)(xian)(xian)時(shi)(shi)(shi)間(jian)，通常的(de)(de)(de)(de)調(diao)整標準(zhun)是(shi)：當機(ji)(ji)針(zhen)(zhen)(zhen)下降(jiang)到最(zui)低(di)位置后，向上(shang)(shang)提升2．2mm時(shi)(shi)(shi)，梭(suo)(suo)尖到達機(ji)(ji)針(zhen)(zhen)(zhen)中(zhong)心線(xian)(xian)(xian)(xian)，距(ju)針(zhen)(zhen)(zhen)孔上(shang)(shang)邊緣2mm。當然，這并(bing)(bing)非是(shi)一(yi)(yi)成(cheng)(cheng)不(bu)變(bian)的(de)(de)(de)(de)。因(yin)(yin)為(wei)調(diao)整鉤(gou)(gou)(gou)線(xian)(xian)(xian)(xian)時(shi)(shi)(shi)間(jian)的(de)(de)(de)(de)實(shi)質目(mu)的(de)(de)(de)(de)為(wei)的(de)(de)(de)(de)是(shi)使梭(suo)(suo)尖在形成(cheng)(cheng)飽滿并(bing)(bing)且穩(wen)定的(de)(de)(de)(de)最(zui)佳線(xian)(xian)(xian)(xian)環(huan)(huan)時(shi)(shi)(shi)鉤(gou)(gou)(gou)住面線(xian)(xian)(xian)(xian)，從而(er)避免(mian)跳(tiao)針(zhen)(zhen)(zhen)現象(xiang)。由于縫(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)薄料(liao)(liao)(liao)(liao)是(shi)一(yi)(yi)般用(yong)的(de)(de)(de)(de)是(shi)細線(xian)(xian)(xian)(xian)，縫(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)線(xian)(xian)(xian)(xian)本身柔軟，與(yu)(yu)縫(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)料(liao)(liao)(liao)(liao)的(de)(de)(de)(de)摩擦(ca)力(li)較小，而(er)縫(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)厚料(liao)(liao)(liao)(liao)時(shi)(shi)(shi)一(yi)(yi)般要用(yong)較粗的(de)(de)(de)(de)線(xian)(xian)(xian)(xian)，縫(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)線(xian)(xian)(xian)(xian)本身較為(wei)硬(ying)挺(ting)，與(yu)(yu)縫(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)料(liao)(liao)(liao)(liao)的(de)(de)(de)(de)摩擦(ca)力(li)大，因(yin)(yin)此，縫(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)料(liao)(liao)(liao)(liao)厚度(du)不(bu)同時(shi)(shi)(shi)，縫(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)線(xian)(xian)(xian)(xian)形成(cheng)(cheng)最(zui)佳線(xian)(xian)(xian)(xian)環(huan)(huan)的(de)(de)(de)(de)時(shi)(shi)(shi)間(jian)是(shi)有(you)差(cha)異(yi)的(de)(de)(de)(de)，這就要求調(diao)整鉤(gou)(gou)(gou)線(xian)(xian)(xian)(xian)時(shi)(shi)(shi)根(gen)據(ju)具(ju)體情況靈活(huo)掌握(wo)，方(fang)能(neng)獲得理(li)想(xiang)的(de)(de)(de)(de)編織袋縫(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)紉效果(guo)。 有(you)經驗(yan)的(de)(de)(de)(de)編織袋縫(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)紉機(ji)(ji)維修工(gong)、操作(zuo)工(gong)都知道，縫(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)薄料(liao)(liao)(liao)(liao)時(shi)(shi)(shi)，梭(suo)(suo)尖要調(diao)“快(kuai)”些；縫(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)厚料(liao)(liao)(liao)(liao)時(shi)(shi)(shi)，梭(suo)(suo)尖要調(diao)“慢”些。其緣由不(bu)難(nan)理(li)解(jie)。 縫(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)薄料(liao)(liao)(liao)(liao)時(shi)(shi)(shi)，縫(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)線(xian)(xian)(xian)(xian)細而(er)柔軟，機(ji)(ji)針(zhen)(zhen)(zhen)稍(shao)稍(shao)由下極限(xian)位置提升，裕出的(de)(de)(de)(de)縫(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)線(xian)(xian)(xian)(xian)便會向機(ji)(ji)針(zhen)(zhen)(zhen)兩側膨起，形成(cheng)(cheng)線(xian)(xian)(xian)(xian)環(huan)(huan)。并(bing)(bing)且，由于縫(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)料(liao)(liao)(liao)(liao)與(yu)(yu)縫(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)線(xian)(xian)(xian)(xian)摩擦(ca)力(li)小，機(ji)(ji)針(zhen)(zhen)(zhen)繼續向上(shang)(shang)提升時(shi)(shi)(shi)，縫(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)料(liao)(liao)(liao)(liao)與(yu)(yu)縫(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)線(xian)(xian)(xian)(xian)相(xiang)對(dui)位置關系的(de)(de)(de)(de)隨(sui)機(ji)(ji)性(xing)較大，加之縫(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)線(xian)(xian)(xian)(xian)細軟，線(xian)(xian)(xian)(xian)環(huan)(huan)很容易偏(pian)轉(zhuan)，變(bian)得難(nan)以保(bao)持穩(wen)定。因(yin)(yin)此，梭(suo)(suo)尖相(xiang)對(dui)于機(ji)(ji)針(zhen)(zhen)(zhen)的(de)(de)(de)(de)運(yun)動(dong)稍(shao)稍(shao)超前調(diao)整有(you)助(zhu)于提高(gao)鉤(gou)(gou)(gou)線(xian)(xian)(xian)(xian)的(de)(de)(de)(de)可(ke)靠性(xing)。 相(xiang)反(fan)，縫(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)厚料(liao)(liao)(liao)(liao)時(shi)(shi)(shi)，縫(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)料(liao)(liao)(liao)(liao)粗而(er)硬(ying)挺(ting)，機(ji)(ji)針(zhen)(zhen)(zhen)由下極限(xian)位置提升較高(gao)時(shi)(shi)(shi)，方(fang)能(neng)形成(cheng)(cheng)飽滿線(xian)(xian)(xian)(xian)環(huan)(huan)。并(bing)(bing)且，縫(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)料(liao)(liao)(liao)(liao)與(yu)(yu)縫(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)線(xian)(xian)(xian)(xian)的(de)(de)(de)(de)摩擦(ca)力(li)大，加之縫(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)料(liao)(liao)(liao)(liao)較為(wei)粗硬(ying)，即使機(ji)(ji)針(zhen)(zhen)(zhen)提升較高(gao)，裕出的(de)(de)(de)(de)縫(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)線(xian)(xian)(xian)(xian)較多，線(xian)(xian)(xian)(xian)環(huan)(huan)也不(bu)會偏(pian)轉(zhuan)，仍可(ke)保(bao)持穩(wen)定。因(yin)(yin)此，將(jiang)梭(suo)(suo)尖相(xiang)對(dui)于機(ji)(ji)針(zhen)(zhen)(zhen)的(de)(de)(de)(de)運(yun)動(dong)調(diao)得遲后些更有(you)益于防止(zhi)跳(tiao)針(zhen)(zhen)(zhen)。