Ningbo Zhenhai Hengxin Electromechanical Technology Co Ltd   

Beng sewing machine repair, first determine a common reason caused by skipping (a) inspection machine needle is intact (bending, blunt sharp installed correctly, etc.). (two) check case line is correct, especially in retaining line is on the board, if not in the above is also easy to skip. (three) how to check the quality of the line, whether it should be lubricated with silicone oil. Two, the above points out, should examine the relationship between the needle with curved needle (a) between the check with the curved needle machine needle to eat potential relationship. Generally speaking, when the needle rod dropped to the lowest point and began to pick up, sewing machines have a ring on the right side of the form, the curved needle can begin to penetrate. The standard position is: eat potential curved needle with needle on the left side of the relationship is, when bending the needle swing from right to left to the left needle, the needle tip is left behind the threading hole above about 0.5 ~ 1mm. (two) the interference between the check with the curved needle machine needle (GAP) relationship. In general, the needle can be some deviation, is the rightmost (inside the shortest) clearance should be 0 ~ 0.05mm with curved needle machine needle, and the needle on the left with the gap between its curved needle - 0.03 ~ 1mm, it is 2 degrees to 5 degrees angle deviation. When bending the needle from the left (dead) start swinging to the right, there should be 1.5 ~ 2.5mm of the distance between the left line with the curved needle needle, then left straight needle through the curved needle back, straight needle through the curved needle, is through the curved needle triangle coil, and 0 ~ 0.05mm interference size, it is easy to cause skipping. (three) before the examination, after the relationship between the needle guard and straight needle, the needle guard and between the front straight needle is too large, causing direct needle ring formation is not ideal, and the formation time is slow, resulting in bending the needle through the ring line, straight needle instability, easy dislocation caused by skipping. Support position is too high or too low, also easy to cause the bubble line throwing out, causing skipping. Department of nursing before and after the position: before the needle guard with straight needle should be between -0.01 ~ 0mm gap. The height of the front needle guard: when bending the needle through needle straight back from right to left, before the needle guard should be higher than the left needle tip 1mm right and left position; after the needle guard height should be straight needle ring can be formed without affecting the looper thread. The above points refer to the instruction manual drawing to adjust their own. (four) in the joint straight needle skipping. This is because the needle is bent in straight through the sewing ring, the sewing head fabric thick, straight needle back, resulting in bending the needle through the straight needle in front. The general reason mostly failed to protect the guard in place. As long as the needle guard after straight needle back close to a point. Guard a little touch needle can be. Before the interval and the needle guard with straight needle between the smaller, as long as the needle, needle breakage, barren continuous. (five) due to loose cam caused by skipping. The general situation of looper thread tension, whether due to premature feeding time. If premature, as long as the take-up cam adjustment can be slow. When the left needle through the curved needle triangle line, should look at the triangle line tension is consistent with the need to penetrate. A line that Dusong, take-up cam wire fast; too tight, that wire is slow, all should be adjusted accordingly. Ningbo Zhenhai Hengxin Electromechanical Technology Co Ltd

Sewing equipment, sewing equipment