The utility model patent involves in the manufacturing equipments for wire and cable. Exactly speaking,it’s an invariable automated packing belt transmission device. It has bracket, rotating axis,electromotor and assistant guide pulley. It specilized in applying for the viariable frequency electromotor. The output axis of electromotor is couplings connecting with the rotating axis. The tension of the uitility model patent is stable, and it can appear the degree of tension. The high frequentelecrical performance of product we made with this device is stable, the structure is simple, the operation is convenient,and also has the advantages of high efficiency and good quality. It’s mainly used for HDMI 、Displayport、 USB3.0, which the fluctuation of impedence is very low,and it meets the requirements of new product.
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