The principle and characteristics of the cup printing machine

1 Brief introduction of automatic cup printing machine

The automatic cup printing machine is a high-efficiency automatic printing machine that provides accurate multi-color overprinting and a maximum speed of 500 pieces per minute. A fully automatic multi-color curved surface printing machine for articles, including a rotary printing mechanism, a tray mechanism, a loading and unloading mechanism and a transmission mechanism. The program controller coordinates the loading and unloading and the synchronous linkage of each component. In the past, curved surface printing machines mostly used screen plate reciprocating pad printing or manual printing on curved surfaces, which resulted in low production efficiency, high cost and poor quality. In the curved surface printing machine with automatic plate alignment, advanced automatic plate alignment technology is adopted, which can realize accurate multi-color overprinting, greatly improves the accuracy and speed of plate alignment, and improves production efficiency. The successful development of the automatic curved surface printing machine has filled the gap in the country, shortened the gap between my country's high-speed color printing technology for packaging containers and developed countries, and put it into the market in batches, achieving greater economic and social benefits. Whether it is a simple block color pattern, a full-color pattern or a pattern with excessive color, it can be printed at one time without plate making, printing and repeated color registration. The color is beautiful and the effect is realistic. Strong focus, no fading, easy machine operation, stable performance, creating higher printing quality than traditional methods, fully meeting the high-intensity mass production requirements of various industries, thereby significantly improving the market competitiveness of products.

2. Working principle of automatic plastic cup printing machine

Curved surface printing is to put the ink into the letterpress engraved with text or pattern first, then copy the text or pattern onto the curved surface, then use the curved surface to transfer the text or pattern to the surface of the molded product, and finally use it by heat treatment or ultraviolet light irradiation. The ink cures. There is no difference in the printing principle between curved surface printing and flat printing, and the term curved surface printing is only produced because of the different shapes of the substrates. Specifically, the curved surface printing machine includes a large rubber roller on which the transfer blanket is fixed, various color plate roller assemblies matched with the large rubber roller, a material tray matched with the large rubber roller, and a mold handle installed thereon, The main transmission shaft system that drives the rotation of the large rubber roller and the material tray; through the ink transfer system, the ink is transferred to the plate roller, and the plate roller copies the text or pattern onto the rubber cloth on the large rubber roller. The color is registered on the transfer blanket of the large rubber roller, and then transferred to the substrate on the mold handle.

3 Technical characteristics of automatic disposable plastic cup printing machine

①The plate roller and the ink roller box are distributed in groups around the large rubber roller in a satellite form, which can realize automatic plate alignment and efficiently complete the task of pattern overprinting, while having high precision and speed;

②The volute cam intermittent transmission mechanism is used to drive the eight-station material tray to complete the intermittent movement of printed products, and realize the right, upper, left and lower stations of the eight-station material tray to complete cup feeding, pre-processing, and printing in sequence. and the next cup process;

③The eccentric mechanism is used to realize the plate pressure adjustment between the large ink roller and the printing roller, and between the printing roller and the large rubber roller. Contact printing pressure between them to ensure the reproducibility and clarity of printed patterns;

④The whole machine is driven by one motor, and a single transmission chain is used to realize the synchronous operation between various parts;

⑤A photoelectric encoder is installed on the volute camshaft, and the PLC control realizes the sequential work of the solenoid valves of the pneumatic components in each part;

⑥ Install the PS photosensitive resin plate on the plate roller by using the plate clamp, and the installation position and tension can be adjusted;

⑦Adopt the rapid control technology of no cup no printing to ensure that the ink does not pollute the die when the cup fails during the printing process;

⑧Adopt CCD sensor to collect images, analyze color mark position error, and control two stepper motors by PLC to adjust the rotation of the plate roller in the circumferential direction and axial direction respectively, so as to quickly eliminate the error and realize fast automatic plate alignment

Lead Machinery, a cup printing machine manufacturer, is suitable for printing cups and bowls of different sizes and materials, and provides customers with fully automatic printing and packaging solutions. If you are interested in the machine, please contact us.