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Analysis of printing speed of flat screen printing machine

2017-11-29下載文件:暫時(shí)沒(méi)有下載文件
The setting of a flat screen printing machine is usually made on the basis of the process of manual printing. Unlike manual printing, the plate runs and the plate is fixed. And the manual is the plate fixed, the person carries the plate movement. But the whole printing process is the same. They are stretched, put the plate, scraper, lifting plate, color board (go hand plate machine, platen lacqerpeels). The general printing machine is set up a piece of paving, one head to uncover, to operate at two ends, the paving and uncovering are carried out at the same time. In order to make it easier for you to understand, let's get to know the speed of its printing.
1. Paving and exposing pieces. We begin to say first, towel, it not only a small area and its shape is rectangular, laying on the counter, I might hear a convenient shop, easy to identify the position of concepts. It is not a problem to reach 1000 pieces per hour. Clothing, pieces of it is bigger than the towel area, and its shape is irregular, with each piece positioning when the difficulty is big, shop, as when the concepts will be compared to convenient towel, time-consuming, it can reach 800 pieces per hour is difficult. Their paving and cutting are carried out at the same time, so it is more time-saving. Towels, towels, bed sheets, quilt cover, although they are rectangular, but their area is larger, stretched, exposing the film length, width and height should be increased, the time is much longer. It can not be carried out at the same time, and it should also be lengthened at the time of use. So the novice 180 per hour, up to 240-300 of skilled workers. If the stamp is effective area of 1800X2000mm large bed sheets, quilt cover, and towels are stretched, white jasmines piece is not easier, less the number of print per hour. It's good for a skilled worker to reach 200 per hour.
2. The printing plate. The printing plate area of small flat screen printing machine is small, and the speed of down and down is very little. It has little effect on the screen surface. Because of the small screen mesh, the air in the middle will soon be excluded. The plate of a large area of printing machine, put down the speed of a great impact on the surface of the screen, if too fast, because there is a certain gap between the plate and the plate, plate falling down when the air from above not excluded, nor quickly from around the exclusion, resulting from the pressure will be on screen for from the top, for a long time, the screen surface will become loose, in printing, a flower will be misplaced. Therefore, the design of a large flat screen printing press can not be too fast when it falls, which affects the printing speed of the large printing machine as a whole.
3. Scraping with a scraper. In the process of scraping the blade, there are two problems, one is the speed of the scraper and the other is the running distance of the scraper. The operation of the scraper on the caterpillar flat screen printing machine is the rocker type, which can bear greater force in the steering. It can increase the steering and running speed of the scraper. The use of the rocker arm of a large printing machine will make the machine very high, so the method of chain driving the scraper is used. So the chain in the process of using the bearing capacity than the rocker bearing force is much smaller, and the scraper is lengthened, plus two points in a certain time, so to stay in turn, to reduce the damage of the chain. So the speed of the scraper will be slowed down. The other is the running distance of the scraper. The running distance of the printing scraper on the towel is at most 40cm, while on the bed sheet, the printing scraper runs at least 180cm, which is more than 4 times of the towel.
The above description of the printing speed of the flat screen printing machine is such that in order to improve the production efficiency and reduce the cost, it is necessary to maintain a certain printing and dyeing speed. If the speed is too fast, the inertia is too large, the conduction band is difficult to stop, and the location color must be not allowed. I hope you can notice the speed problem when you operate, so as to ensure the quality of the printed product.
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