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 的繞線量不要超過(guò)梭芯的85%;2.將梭芯換成鋁材料梭芯，由于鋁質(zhì)梭芯重量輕可有效地減少梭芯運(yùn)動(dòng)慣性;3.選用帶防空轉(zhuǎn)簧片的梭芯套;4.或在普通梭芯套底部墊一塊絨布，以此增大梭芯的摩擦阻力;5.將梭芯反裝，使梭芯的旋轉(zhuǎn)方向與梭芯的運(yùn)動(dòng)慣性方向相反;6.使用的梭芯與梭芯套的間隙要盡量保持小些;7.降低縫紉速度，特別是剪線停車時(shí)的速度要低;8.剪線時(shí)梭芯頂桿應(yīng)壓住梭芯，可根據(jù)情況調(diào)整梭芯壓桿間隙，讓梭芯轉(zhuǎn)動(dòng)自如，并檢查梭芯壓桿是否起作用;9.我們可以把底線稍微的調(diào)松些;10.將分線板的2個(gè)螺釘旋松，然后再把松線板向前推，以不碰機(jī)針為宜，這樣做的目的是增加剪線后底線線頭的長(zhǎng)度，然后擰緊螺釘;11.我們把定刀向右移，使剪線時(shí)間推遲，目的也是增加剪線后底線線頭長(zhǎng)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.