How To Repair The Bottom Of The Sewing Machine?

As an efficient sewing machine, the present computer Sewing machine It has been widely used in modern clothing production, and has become one of the necessities of clothing enterprises.

In my usual work, I usually encounter operators on the assembly line asking such questions: "how can we adjust the bottom line of the computer sewing machine and how to adjust it?" for such a technical fault, I believe other garment enterprises will encounter similar problems when using different brands of computer sewing machines, that is, when the sewing machine is full, the bottom line is not easy to carry on the line, and some of them will be fine if used.

Cause analysis:

Under normal circumstances, if the stitching line is normal when the shuttle core of the computer sewing machine is full, the thread of the bottom line should be 30 millimeters long. When the shuttle core is half used, the thread of the bottom line is only 20 millimeters long, so the needle can not be reached.

According to the author's analysis, when the shuttle core is full, the resistance of the bottom line will be large, so that it can cancel part of the inertia. With the decrease of the shuttle core, the bottom line is more smoothly, and the large movement inertia eventually leads to the shuttle core line too short. The main reason why the shuttle core is too short is that because the spindle inertia is also known as the phenomenon of shuttle core pulling back, the needle tip of the needle is always showing a hair. For this fault, we think that the imported pin No. 16 should have no problem in its strength and quality under the sewing condition. The problem may be the failure of the needle tip "needle" on the metal parts, such as presser pins, needle plates, bending pins and needle bars. It is easy for general shear mechanism to have such problems.

Treatment plan:

According to the above reasons, the author suggests that readers check and troubleshoot according to the following methods: 1. Shuttle core 的绕线量不要超过梭芯的85%;2.将梭芯换成铝材料梭芯，由于铝质梭芯重量轻可有效地减少梭芯运动惯性;3.选用带防空转簧片的梭芯套;4.或在普通梭芯套底部垫一块绒布，以此增大梭芯的摩擦阻力;5.将梭芯反装，使梭芯的旋转方向与梭芯的运动惯性方向相反;6.使用的梭芯与梭芯套的间隙要尽量保持小些;7.降低缝纫速度，特别是剪线停车时的速度要低;8.剪线时梭芯顶杆应压住梭芯，可根据情况调整梭芯压杆间隙，让梭芯转动自如，并检查梭芯压杆是否起作用;9.我们可以把底线稍微的调松些;10.将分线板的2个螺钉旋松，然后再把松线板向前推，以不碰机针为宜，这样做的目的是增加剪线后底线线头的长度，然后拧紧螺钉;11.我们把定刀向右移，使剪线时间推迟，目的也是增加剪线后底线线头长度。

Through the above measures should be used as appropriate, in view of this situation, the author's analysis is likely to be caused by jumping the needle, otherwise it will not happen, because a complete buttonhole round head and knot stitch is completed coherently, not two independent tracks completed, only jump needle may be possible not online.

I believe "computer sewing machine". Baseline The problem is that the remaining half of the needles will not get on the line. "This problem can be effectively solved.