The pre-coating laminating machine is a special equipment that combines printed materials with pre-coated plastics. Compared with the instant laminating machine, the biggest feature is that there is no sizing and drying parts, so this type of laminating machine has a compact structure, small size, low cost, easy operation, and good product quality stability.
The pre-coating laminating machine consists of four main parts: pre-coating plastic film unwinding, automatic input of printed matter, hot-pressing zone compounding, and automatic rewinding, as well as mechanical transmission, pre-coating 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 in the transmission and enter the composite part at an equal distance. It is generally controlled by pneumatic or friction methods. The conveyance is accurate and high precision. It can also be used when the printed product with a small 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 silicone rubber heating pressure roller pressure roller. The hot pressure roller is a hollow roller, equipped with a heating device inside, forged with hard chromium on the surface, and polished and refined. The temperature of the hot pressure roller is tracked by the sensor and corrected by the computer at any time. The compound pressure is adjusted by an eccentric cam mechanism. Stepless adjustment. The calender roller group is basically the same as the composite roller group, that is, it is composed of a chrome-plated pressure roller and a silicone pressure roller, but without a heating device. The main function of the calender roller group is: after the pre-coated plastic film and the printed matter are compounded by the composite roller group, the surface brightness is not high. After the secondary extrusion of the calender roller group, the surface brightness and adhesion strength are greatly improved.
3. Transmission system The transmission system is driven by a high-power motor controlled by a computer. After one-stage gear reduction, it is driven by a three-stage chain to drive the movement of the paper feed mechanism and the rotation of the composite part and the silicone pressure roller of the calendering mechanism. The pressure roller group maintains a suitable working pressure under the action of steplessly adjusted pressure.
4. Computer control system The computer control system uses a microprocessor. The hardware configuration is composed of a motherboard, a digital key board, an optical isolation board, a power board, and a stepper motor power driver board.