The Open Type Rotary Screen Printing Machine is a method of printing using a seamless cylindrical screen. It began in the 1960s and developed rapidly, becoming a new printing method for fabrics. The rotary screen printing machine is characterized by the continuous rotation of the rotary screen for printing, which not only maintains the style of screen printing, but also improves the printing production efficiency.
In the control system of the rotary screen printing machine, the two main problems are solved. The first one is the synchronization between the feeding frame, the printing guide belt, the drying room conveyor belt and the falling frame, and the synchronization between them ensures the fabric. When passing through the four units continuously, they are neither stretched or even broken, nor wound. This kind of synchronization is given by the main motor as the other three way. The tension frame is used to realize the automatic adjustment of the closed loop speed, so as to achieve the synchronization between the four, usually by the simulation of "synchronous controller" or PLC. The output module is used to implement this synchronization.
The second synchronization is the synchronization between the rotation of the rotary screen printing machine (that from the professional Hot Air Stenter manufacturer - Licheng) and the movement of the conduction belt, which is one of the most critical technologies in the printing machine. The synchronization accuracy of the two determines the printing precision of the whole printing machine, how to improve the circle The synchronization between the net and the conduction band and the synchronization accuracy between the nets have become one of the most important problems in the system design. Compared with the independent transmission of the rotary screen, the traditional mechanical coaxial transmission has obvious gaps. The main differences are as follows:
1. There are many transmission links, and the accumulated error is large, which affects the printing precision.
2. With the mechanical wear, it is easy to appear "running flowers", affecting the stability of the printing quality.
3. Variety adaptability is limited and it is not suitable for processing heavy structures.
4. The longitudinal versus flower range is limited.