Polyester belts need to go through many links of produc […]
Polyester belts need to go through many links of production and processing from raw materials to finished products. If the processing technology is improper or the operation is incorrect, it is easy to cause the quality of the polyester belt and cause the polyester belt to not be used normally. Then, how to avoid errors in the production of polyester belts and improve Regarding the quality level, HU ZHOU XINXI WUXING SILK CO., LTD. will provide you with 4 common problems and preventive measures in the production of polyester belts!
Common problem 1: The structure of the bent belt. The main reason for this problem is the uneven threading of the steel buckle, the uneven yarn drawing of the pan, the incorrect orientation of the steel buckle and the improper yarn splicing method.
Preventive measures: You can adjust the threading method of the steel buckle to make it follow the regular threading method. Pull the larger and looser side off a little when pulling the yarn to make it level with the other side or 1-5 laps less. should. In the adjustment of the position of the steel buckle, there is usually a gap between the steel buckle and the knitting needle.
As for the yarn splicing method, it can be divided into upper base layer splicing or left and right layer splicing according to requirements. Usually, it must be divided into upper and lower splicing methods.
Common problem 2: There are waves. The reason for this phenomenon is that the steel buckle is not evenly threaded, too much yarn is worn on both ends, and too little is worn in the center. In other cases, the steel buckle is too large and the weft. The tension is too tight and the yarn is not evenly drawn at the pan, the two ends are tight, and the center is too loose. In addition, the yarn splicing method is wrong, and the balance of the drop pressure is not good, and it is easy to cause waves.
Preventive measures: You can use standard steel buckles to thread the yarn in accordance with 1 or 2 groups. In the case of more yarn on both ends and less yarn in the middle, you can choose a suitable steel buckle to wear according to the width of the webbing. . Changing the center and both ends of the yarn, or pulling the center looser can also avoid the occurrence of waves. In the yarn splicing method, it can be spliced according to the requirements of the webbing practice, so that the balance drop is evenly pressed according to the number of strands.
Common problem 3: Poor needle edge. The reasons for this situation are mostly due to uneven weft thickness, incorrect knitting needle method, too long or too short, loose when the pan head moves tightly, and deformation of the weft wheel, and it is not possible to circle or weave. It is caused by wear and tear of the pin holder.
Preventive measures: The problem of uneven weft thickness can be solved by replacing the weft yarn. The knitting needle should choose the appropriate needle length according to the thickness of the webbing, so that the weft yarn can just be returned. It can also be solved by fixing the two ends of the pan head firmly and not letting the pan head rest against the iron frame at both ends. The deformed weft wheel should be replaced in time, and the severely worn fixed rod should be replaced in time.
Common problem 4: Fuzzing. The reasons for this situation include fuzzing on the needle edge, fuzzing on the cloth edge, and fuzzing on the surface of the webbing.
Preventive measures: timely replace the damaged needle plates, knitting needles, and weft needles that have been used for too long, and do not press the belt pressing plate too tightly; adjust the interval with the knitting needles so that the weft yarn is finished hanging, and the weft yarn should be put into the over weft yarn In the rod, hang the steel buckle, and replace the steel buckle in time if it is damaged. The material itself has hairs. For some fluffing, you can replace the fluffing. If there is too much fluffing, you need to make a full inspection belt.
Doing a good job in the prevention of the common problems in the production of the above 4 polyester belts can reduce the defective rate in the production and processing, which is of great benefit to improving the quality of polyester belts!