Some kinds of sewing machine

The timing with the needle can be adjusted.

For example, the three needle and five wire stitching machine can adjust the timing between the needle and the needle by adjusting the angle between the F00710004 and the front axle (F00708001).

The best time to cooperate is when the needle goes down and the right needle moves into the tightened needle ring when the right needle moves to the right.

The amplitude of the needle must be ensured: when the needle is swinging to the right extreme position, it can hook the needle when it returns to the left. The relationship between the needle and the hook is wrong: the relationship between the high speed needle and the crochet needle.

The reason for this phenomenon is that the bottom and surface lines are not properly twisted on the fabric before the surface scissors are opened. This failure is not caused by a certain part of the problem. It needs to be checked and adjusted from several aspects.

Line error: correct the thread again.

Needle installation error: reinstall the needle correctly.

When the needle moves to the far left, the distance between the tip of the needle and the left needle is 4.5-5.5mm.

The installation height of the needle should be as high as possible, because if there is a needle jumping phenomenon before the scissors are opened, then when the scissors are opened, the surface line will emerge from the pinhole.

Check whether the length of the bottom line is enough. If the bottom line is not enough, then the bottom line and the surface line can not be properly twisted when the seam is started, resulting in the surface line from the pinhole, but the upper and the needle of the needle.

The gap between below should enable the needle to pass smoothly.

The installation height of the strut needle should be able to raise the needle line to the highest point when the needle is raised to the highest point. The chain line bending needle clamp plate pressure is too loose: Micro thread chain bending needle thread clamp nut.

Its function is to loose the surface line after the keyhole is finished. When carrying out the next keyhole, it will provide enough surface line to the rotary shuttle with the take-up rod to prevent the surface line from coming out of the scissors due to the decrease of the supply line.

The return quantity or height of chain thread Crochet is incorrect: re adjust according to the standard.

Slide smoothly under the right needle to the back of the needle tip of the right needle (away from the operator side), so that when the right needle drops, it is easy to stop the sewing thread.

When

When the tip of the needle moves to the front of the left needle, the gap between the left needle and the tip of the needle should be 0.5-0.8mm.