The pre-coated laminating machine is a special equipment for compounding printed matter with pre-coated plastic. Compared with the instant coating type laminating machine, its biggest feature is that there is no glue coating and drying part, so this type of laminating machine has compact structure, small size, low cost, simple operation and good product quality stability.

The pre-coating type laminating machine consists of four main parts: pre-coated plastic film unwinding, automatic printing of printed matter, hot press zone compounding, and automatic winding, as well as mechanical transmission, pre-coated plastic film flattening, vertical and horizontal slitting, and computer control system And other auxiliary devices.

1. The automatic conveying mechanism of the printed matter input part can ensure that the printed matter does not overlap during transmission and enter the composite part equidistantly. It is generally controlled by pneumatic or friction, and the delivery is accurate and precise. It can also be used when the composite format is small. Meet the above requirements.

2. The composite part includes a composite roller group and a calender roller group. The composite roller group is composed of a pressure roller and a pressure roller heated by silica gel. The hot pressure roller is a hollow roller with a heating device inside. The surface is forged with hard chromium and polished and finely ground. The temperature of the hot pressure roller is tracked and sampled by a sensor and corrected by the computer at any time. The compound pressure is adjusted by an eccentric cam mechanism. Can be steplessly adjusted. The calender roller set is basically the same as the composite roller set, that is, it consists of a chrome-plated pressure roller and a silicone pressure roller, but there is no heating device. The main function of the calender roller group is: after the pre-coated plastic film is compounded with the printed matter through the composite roller group, the surface brightness is not high, and the surface brightness and bonding strength are greatly improved by the second extrusion of the calender roller group.

3. Transmission system The transmission system is driven by a computer-controlled high-power motor. After a one-stage gear deceleration, through a three-stage chain transmission, it drives the movement of the paper feeding mechanism and the rotation of the composite part and the silicone pressure roller of the calendering mechanism. The pressure roller group maintains proper working pressure under the pressure of stepless adjustment.

4. Computer control system The computer control system uses a microprocessor, and the hardware configuration is composed of a main board, a digital key board, an optical isolation board, a power supply board, and a stepping motor power drive board.

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