Treatment method of thread short pinhole prolapse

How to deal with the short needle hole of the thread after the cutting of the computer car

the solution to the problem of the short needle of the thread after the cutting of the computer car depends on the brand of the machine

first, check whether the pressure of the small wire clamp is too high from the simplest place. The small thread gripper controls the length of the thread. If the pressure is too high, the thread is too short, and the thread will come out of the needle hole during the second sewing

secondly, when the tangent electromagnet works, pay attention to the big clamp, which needs to determine whether the thread device pops up. If it doesn't pop open, push the big wire clamp inward a little less

third, pay attention to check whether the position of the tangent cam is correct. There is a great possibility of problems in this place, and it is more important to realize lightweight

fourth, check whether the hand wheel is installed correctly and whether the sensor at the hand wheel is installed correctly

fifth, if it is a brother's computer flat car or a computer flat car imitating a brother, pay attention to whether the installation position of the moving knife is too front-end, that is, the cutting is too early

sixth, if it is a heavy machine, Or it is a machine that imitates the weight machine. Low voltage aluminum alloy conductor power cables are mainly used in construction and other utilization fields (the United States and other North American countries do not have the successful experience of AA (8000) series aluminum alloy conductors used to manufacture cables and wires with voltage levels above 10kV. Pay attention to whether the installation position of the fixed knife is on the leftmost side.

seventh, pay attention to whether the wire stopper is under excessive pressure.

eighth, if it is an imitation of a brother computer car, pay attention to whether the left side of the moving knife is worn. Some of these machines are prone to tangent feed, and the moving knife does not reset. If the moving knife is stuck During the second needle lifting, the needle will collide with the moving knife, which will damage the left side of the needle and the moving knife. When there is a scar on the left side of the moving knife, based on the disadvantages of the traditional equipment of the hydraulic universal testing machine and the new requirements of the market for the universal testing machine, the thread will not smoothly enter the gap of the moving knife when cutting, resulting in too short thread. When the needle is lifted for the second time, the thread will fall out of the needle hole. Ninth, pay attention to whether the on-line reel and the thread feeder are vertical. If the angle difference between the reel and the thread feeder is too large, the on-line resistance will be too large, resulting in too short thread ends when cutting