重机平头锁眼机落刀机构故障现象及调整

Fault Phenomenon and Adjustment of Knife Dropping Mechanism of JUKI Straight Buttonhloing Machine

介绍重机LBH-781系列高速平头锁眼机落刀机构的工作原理及控制落刀过程维修调整,总结落刀机构开始缝制时切刀落下、切刀不动作、切刀连落两次、面线断后切刀落下、偶尔出现切刀落刀不到底、落刀声音太响等故障现象产生的原因及排除方法,为重机LBH-781型平头锁眼的正常使用及故障排除提供技术帮助。

This paper introduces the working principle of the knife dropping mechanism of the JUKI LBH-781 series high-speed straight buttonholing machine and the maintenance and adjustment of the control knife dropping process.It summarizes the causes and elimination methods of the knife dropping,the knife not moving,the knife dropping twice in succession,the knife dropping after the surface line breaking,the knife dropping below the bottom occasionally,and the sound of the knife dropping too loud when the knife dropping mechanism starts to sew.The normal use and troubleshooting of type JUKI LBH-781 straight buttonhloe provide technical assistance.