Rational use of the hottest Baodi 9810 offset pres

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The rational use of abodi 9810 offset press

1. operation steps

(1) plate making. Use the plate making machine plate (zinc oxide plate) and then apply the fountain solution

(2) inking. Put the ink into the ink tank and stir it properly to make the ink transfer roller contact with the inking roller. Start the machine and adjust the ink tank screws to make the ink on the surface of the ink roller uniform

(3) paper loading. Adjust the side gauge of the paper stacking table to the width of the paper, lower the paper stacking table, and place the paper neatly

(4) adjust the blowing volume and inspiratory volume. Turn on the air pump switch, and adjust the blowing amount and suction amount according to the paper thickness. When printing long paper, you need to increase the paper feeding angle, and when printing short paper, you need to reduce the paper feeding angle

(5) paper connection. Adjust the distance between the left and right paper receiving side gauges of the paper receiving table according to the paper specification

(6) add water. Before adding water, it is necessary to fill the ink roller (including the ink roller in the sink). When the power switch is turned on, the system has no power display? Ink, and then pour the fountain solution and water into the water tank in a certain proportion (for example, the ratio of zinc oxide fountain solution to water is 1:10). The formula of fountain solution is citric acid 20q. Potassium dihydrogen phosphate 60q, sodium dihydrogen phosphate 609. Potassium ferrous hydride 509. Glycerine 5-7m[and water metallography and flaw detection equipment 1000q.

(7) Hanging version. Open the cylinder cover, put the prepared printing plate into the plate holder, clamp the plate head first, and then clamp the plate tail

2. equipment maintenance method

drain the water in the sink and wash it; The structure and composition of the oil electronic universal testing machine on the ink tank and ink roller. The main machine of the electronic universal testing machine mainly consists of a base, a workbench, a column, a lead screw, a moving beam and an upper beam. Then, the paper of the washing machine is clamped on the drum, the machine is started, and the machine is idled for one time. Part of the ink on the ink roller can be pasted off, and then all the ink rollers are cleaned with car washing water, and the water on the ink roller is wiped dry with an absorbent cloth

when the rubber roller contacts with ink and car washing water, the surface will produce stains and reduce its ink carrying capacity. In order to ensure the printing quality, the cots must be cleaned with car washing water every week, and washed and wiped dry with clean water

3. common faults and solutions

(1) paper jam. Solution: the paper should be flat and placed, and the paper side gauge should be clamped; The blowing nozzle should be in the same horizontal position; The paper feeding angle should be appropriate

(2) double sheets. Solution: adjust the rising speed of the paper feeding table according to the paper quantity; With medium speed printing, it will not generate static electricity and cause double sheet feeding

(3) ink stacking by ink roller. Solution: use qualified offset printing ink; Clean the rubber roller with car washing water

(4) dirty version. To solve the problem, Dr. Sun Hui from the New Energy Research Institute of China University of Petroleum (Beijing) pointed out the way: replace the too thin ink or expired fountain solution; Appropriately reduce the ink supply and increase the water supply

(5) the printing plate is not inked. Solution: open the printing ink roller to increase the printing pressure; Increase ink supply and reduce water supply; Replace the printing plate (too many prints, printing plate wear, affecting inking)

(6) the ink color of the printed matter is blurred. Solution: replace high-quality paper; Increase the roller pressure; Replace aging. Worn rubber blanket

(7) the blowing volume and inspiratory volume are too small. Solution: clean the air supply pipe, air pump and filter

4. Precautions for various printing processes

(1) printing envelopes. Take the opening edge of the envelope as the paper feeding direction. Because the paste part of the envelope is thick, which affects the print definition, it is necessary to determine the printing position, paste it on the embossing cylinder with a piece of paper, and then print it after flattening the depression of the envelope

(2) print large areas of fields and points. When printing a large area of the field, you need to spray powder to prevent ink from sticking to the back of a paper; During dot printing, adjust the pressure between the rollers and control the ink supply

(3) color printing. When changing the ink color, clean the

ink supply system, then apply white ink, clean again, and finally change the ink for printing

(4) chromatic printing. The paper used for chromatic printing should be cut neatly. dry. Flat, the first color ink is dried to the bottom, and then the second color printing is carried out

(5) thin paper printing. When printing thin paper with a ration of 309/m2 or less, the paper feeding angle should not be too forward, and the thin paper suction nozzle needs to be replaced to increase the suction capacity, but the blowing capacity should not be too large. In addition, when using tissue paper with a ration of less than 30g/m2 to print a large area of the field, it is easy to cause machine paper jam, so it should be avoided

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