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Operation procedure of gravure press

Release date: 12-14:57, 2019

Gravure printing is easier to operate than lithography because of its high automation and good plate making quality. Lida machinery and its main operation procedures are briefly introduced
1. Preparatory work
① Inspection Gravure press Whether there is dust, garbage and foreign matters irrelevant to printing, and check whether the ventilation and exhaust facilities are in good condition.
② Check whether the raw and auxiliary materials are sufficient and meet the printing requirements.
③ Quality inspection of roller plate. Pay attention to the latter set of color roller should be slightly larger than the previous color.
④ Check whether the conveying, feeding, feeding, drying, inking, traction and coiling parts of the printing press are jammed, whether the lubricating oil is injected into the lubricating part, whether the oil circuit is smooth, and whether the instruments and meters are in good condition.
⑤ Allocate the ink, choose the same primary color ink as the proofing color code.
2. Mounting plate
Pay attention to the left and right sides of the plate when loading, and do not tighten the cone too tightly to prevent the copper plate roller from cracking and loosening, which will "escape the plate" when printing. Install the plate roller according to the printing color sequence. The printing color sequence is gold and silver ink, black ink, original green, original yellow, original red and white ink. The reverse is true when printing: white ink, magenta ink, yellow ink, green ink, black ink, gold and silver ink.
3. Upper squeegee
Generally, the blade is made of thin steel, with a thickness of 0.15 ~ 0.55mm. The angle between the squeegee blade and the contact point of the printing roller is between 15 ° and 45 ° and is less than 15 ° and the ink is not easy to be scraped; when the angle is greater than 45 °, the plate and scraper are damaged seriously, and the chromium plating layer is easy to be scratched. Squeegee pressure is not easy to be too large, too large, vulnerable to damage the plate; too small. It is not easy to clean the ink. When the oil level is above 400 ~ 800, the oil scraper can be used to scrape the oil from the oil dust holder to the right, so as to prevent the oil from getting on and off the dust holder.
 Gravure press
4. Power on Printing
Gravure rotary press generally adopts a non variable speed system to control the printing speed. In order to synchronize the printing units of various colors, a main motor and a stepless transmission are used, and a long rotating shaft is used to drive the whole printing system. Start the ink pump and check whether the ink pump is reversed. Start the main motor under the condition of the separation of various color plates, check the speed change of the transmission, then turn on the dryer and blower, and close the clutch at low speed to register. with one Color as the reference, start the inching switch 2 3 Four of the longitudinal register calibration; then still with the one Color as the benchmark, two, three, four color horizontal register alignment, horizontal register with handwheel fine-tuning alignment.
5、 Gravure press Work after completion
After the completion of the printing task, stop the main motor, printing substrate stop feeding. When the imprint roller is lifted and the scraper is separated from the printing plate, stop the ink pump, pour out the remaining ink, clean the surface of the printing plate until there is no residual ink. Remove the printed substrate, turn off the dryer and heat it, and clean the floor. When the plate is no longer in use, remove the plate, set up both ends, and put it on a special plate holder. If it is not used for a long time, it should be packed and placed in the warehouse. A group of printing rollers should be put together to avoid confusion, and labels should be attached on the outside, indicating how many printing times have been printed, so as to be ready for use at any time.


contact information
Jiangyin Lida printing and Packaging Machinery Co., Ltd
Address: 683 Xizhang Road, Gushan Town, Jiangyin City, Jiangsu Province
Tel: 0510-86953860
0510-863562587
Fax + 86-0510-86358777
Website: willbefamous.com
E-mail:lida@willbefamous.com