Dry Goods: Solve The Problem Of Wrong Flowers And Running Flowers In Printing?

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The rotary screen printing machine of printing and dyeing enterprises usually adopts multi color printing. If a pattern is made of eight colors, there must be eight flower nets combination. Each color is realized by a printing unit structure of a flower net. The eight flower nets must be kept strictly synchronized in the printing process to print accurate patterns.

But in practice, due to the mechanical wear of parts in the pmission structure, as well as a series of reasons for loose gears and fabric deformation, the phenomenon of "wrong flowers" or "running flowers" inevitably occurs, which reduces the printing accuracy and the qualified rate of products is low.

The traditional method of flower adjustment is based on manual observation, judgement and adjustment. Because manual observation has large error and great labor intensity, it can only be recognized only when printing is running at low speed. Once the printing runs normally and fast, the wrong flowers or running flowers can hardly be found by manual visual inspection.

Therefore, this method of flower processing not only wastes time and produces low efficiency, but also causes a lot of defects and increases the defective product rate.

To solve these problems, the more advanced automatic printing schemes for rotary screen printing machines are:

Special marks should be made on each printing shaft, or when

When passing, the printing mark is printed on the fabric to correspond to the position of the printing pattern on the flower net, and when the flower net is initially positioned, it participates manually. In the course of operation, the mark on the flower net or fabric is detected online by the electronic sensor, and the detection signal is fed back to the motor of the flower net to control the distance between the flower net marking position or the flower net and the fabric mark, so as to achieve the automatic control of the flower effect.

The scheme of the rotary screen printing machine only detects the marks on the flower net or fabric on line, not directly detecting the printed pattern colors on the fabric. Due to the deformation of the fabric on the printing guide belt and the synchronous operation speed between the printing guide belt and the flower nets, it will cause the defect of the color pattern of the printed pattern after being inaccurate, so it still can not achieve the effect of high precision control printing.

The automatic flower control system of circular screen printing machine invented by the company is to automatically detect the location of the printing pattern automatically through image sensor. Compared with the standard pattern, the automatic control of the position of each flower net relative to the fabric printing pattern is automatically controlled by the controller, which eliminates the mechanical wear of the parts in the pmission mechanism during the printing process, or the "wrong flowers" and "running flowers" phenomena caused by many factors such as loosening of the flower gears, incompatibility between the conduction belt and the flower screen, the deformation of the fabric on the printing guide belt, and electrical pmission.

The technology has the function of high precision error correction, and achieves the true sense of accurate printing. It can not only improve the production efficiency, but also greatly reduce the labor intensity, and also greatly improve the pass rate of products.

The invention of this technology will have far-reaching significance for the technological progress of rotary screen printing machine.

The automation system is in the leading position in the world. It plays an important role in promoting the overall level of China's industry and accelerating the development of a printing power.