Analysis of quality reasons for the existence of multi-thread ends in enameled wire

　　 It is often seen in the electronics industry that when returning goods, the quality reason is "multi-threaded". This is really wrong to the enameled wire factory.
　　 Since the current production machines for enameled wire are single-end pay-off and single-end take-up, there is no multi-thread.
　　In practice,  of the \"multi-threads\" occurred in the user-electronics factory. In the process of laying-off, the machine must be stopped every few minutes to change the transformer skeleton. When the machine is stopped, the pay-off tension of some machines is not in place (enameled copper round wire). Because of inertia, the upper coil collapses and presses the lower thread. When it is turned on again, the thread is pressed and broken, causing it to break. Formed the beginning of the chaotic line.
　　After the thread is broken, it cannot be used normally, and the spool must be removed from the winding machine for disposal. Of course, the ones that are disposed of can continue to be used. However, in the process of disposing of the messy thread, if one thread is accidentally broken, there will be three heads, and two threads will be broken, which will lead to five heads... As promised, this axis cannot be handled (enameled wire ), from the manufacturing process to the warehouse, the warehouse returns to the production plant in the name of multiple threads. This is the process of "multiple threads" occurrence and returns.
　　 In fact, multiple thread ends are easy to handle: Use a sharp blade to pick and break a few turns of thread, grab the broken thread and pull it up. Until a head appears.
　　Note: ①The method of reversing the line can be handled in the same way.
　　②The customer's line breaking and chaos during the line setting process can also be related to the product line is not tight --- when the product line is loosened.
　　③Some production plants, such as Dongguan Yimou, add winding enameled wire segments on the light shaft to reduce costs. It can also be regarded as an extraordinary multi-thread. The 1974 national standard agreed to add a line segment (enameled copper round wire), but it must be marked. In  enameled wire factories, only one line segment is required for one axis.
　　④ In the production process of the enameled wire, two or more wires in the oven are connected together, which is actually a waste wire. If the operator forgets to remove the waste wire from the machine, it can be regarded as an extraordinary multi-thread end. However, this probability is about one in a million.
　　⑤The main reason for the multi-thread (enameled wire) with the same weight is that the thread is not tightened when leaving the factory, and the thread collapses during transportation.