The principle of tape coating machine

Principle 1

The working principle of the automatic coating machine used for screen printing is the same, but its performance varies according to different models and different manufacturers. The screen coating machine is provided with a device capable of clamping the screen frame on the vertical frame.

Principle 2

The front and back of the screen area is a horizontal coating mechanism. This coating mechanism consists of a coating tank and mechanical or pneumatic components that control the angle and pressure of the coating tank.

The two ends of the coating mechanism are installed on the vertical support arm of the coating machine, and the coating mechanism is moved up and down by the transmission of a belt, a chain or a cable, and the coating is applied along the surface of the screen. The transmission mechanism is connected to the servo or frequency conversion motor, so that the operation is stable, and the position of the coating mechanism can be accurately controlled.

Principle 3

Before coating, the clean, stretched screen is loaded from the front of the coating machine, and some models can also be loaded from the side. In models designed for large-format screen frames, side mounting is more common, because the screen frame is large and bulky, and side mounting can reduce the amount of lifting and moving.

Principle 4

When the automatic screen coating machine is online with other automatic screen processing equipment (such as cleaning equipment, regeneration equipment, drying device and developing machine), it is more convenient to install the plate from the side. No matter how the screen is installed, once the screen is in the correct position, the pneumatic clamping device or mechanical clamping device is closed to lock the screen. In order to make the operation more convenient, many models have a foot pedal to control the movement of the clip, and the operator can free up his hands to control the screen.

Principle 5

After installing the screen, filling the automatic coating machine with the corresponding photosensitive emulsion, you can start coating. According to the functions of the control system and the equipment, the equipment can coat both sides of the screen at the same time.

Coating method

There are two coating methods, one is to apply the photosensitive emulsion on the screen through multiple wet pressing operations; or to add a drying process after each coating. A machine for quantitatively coating liquid (or melt) polymer materials such as adhesives or paints on the surface of materials.

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