Equipment introduction: Uncoiler is also called substrate unwinder. Automatic uncoiler refers to the tension control from the unwinding of the glass cloth to the joining of the glass cloth. For thinner substrates, such as glass cloth below model 106, it is not possible to manually pull the glass to the cloth splicing table. Because these thin cloths will deform as long as they are pulled hard by the hand, it must use an automatic unwinding device to automatically send the glass cloth to the cloth receiving table. This automatic unwinding device has a set of active unwinding motors to synchronize the unwinding speed of the substrate with the main production line. The glass cloth is sent to the cloth splicing table by the chain, and the glass cloth is automatically aligned and trimmed to ensure the glass cloth to be joined. The latitude and longitude lines can overlap. This is an important guarantee for the quality of thin prepregs to meet the technological requirements.
Using the method of actively sending out the substrate, the unwinding speed of the substrate is synchronized with the main production line, so that the substrate is subject to very low tension, and the thin substrate will not be deformed during the production process. The automatic uncoiler is only available for high-end gluing machines.
Uncoiling machine is divided into single-shaft type and double-shaft turning type unwinding. The single-shaft type supports the uncoiling and the base of the uncoiling material is fixed, and the cost is low. The dual-axis flip type is to support the unwinding and unwinding material roll frame can be rotated 360 °, easy to operate.
Ordinary gluing machine, there is a spring friction plate combination type for tension adjustment during uncoiling. The uncoiling tension is controlled by adjusting the pressure of the spring on the friction plate. This adjustment cannot achieve automatic tension adjustment; pneumatic friction plate combination type, by adjusting the compressed air to air pressure friction The sheet pressure is used to control the unwinding tension. This adjustment can realize automatic tension adjustment; the magnetic powder tension controller can also realize automatic tension adjustment. The structure of these tension controllers is relatively simple. During the unwinding process, as the material roll becomes smaller, the weight of the cloth roll gradually becomes lighter, and the cloth surface tension gradually decreases.