Screen printing machine, the full name of which is screen printing machine, belongs to a kind of stencil printing machine. It is a machine that prints with a screen printing board. Its printing plate is a crisscross screen woven from silk and other materials, and the materials for making the screen are nylon wire, copper wire, steel wire or stainless steel wire.
Second, what does the screen printing machine do?
Screen printing machines have many uses, mainly used in the following aspects:
1, packaging and printing
The main service object of screen printing machine in packaging industry is screen printing industry, such as printing high-grade packaging boxes, packaging bottles, cigarette packs, etc. In addition, with the continuous development of computer technology, all kinds of software appear constantly, especially the production of CD-ROMs for culture and entertainment, TV movies and various publications is increasing. 92% of the company logos, images and characters on this CD are printed by screen printing.
2. Advertising printing
There will be more markets for screen printing in commercial advertisements, especially for electrical appliances companies and tobacco and alcohol companies. In order to promote their own image, they attach great importance to the role of advertisements. The time and quality of advertising determines the company's market share. Therefore, various electrical advertisements, outdoor advertisements and commercial advertisements provide a broad space for screen printing.
3. Circuit printing
In the field of electronic industry, screen printing accounts for 80%. For example, many places use screen printing to produce televisions, and the development of large flat panel display devices such as display screens (PALC) is increasingly inseparable from screen printing.
4, arts and crafts printing
With the development of China's western region and the process of rural urbanization, the ceramic tile production line has a strong growth momentum. In addition, China is a big ceramic country, which not only meets a large number of domestic demands, but also exports to more than 50 countries and regions. Screen printing of ceramic decals plays an important role in the screen printing industry in China.
3. What kinds of screen printing machines are there?
There are many kinds of screen printing machines, which are mainly classified according to two classification methods:
1, divided by printing method
(1) Flat screen printing machine: Flat screen printing plate is used for printing on flat substrate. Generally, the scraping plate moves horizontally against the printing plate, and the substrate is changed through the ups and downs of the printing plate.
(2) Curved screen printing machine: a plane screen printing plate is used to print on a circular substrate. Generally, the scraper is fixed, the printing plate moves horizontally, and the substrate rotates at the same linear speed as the printing plate.
(3) Rotary screen printing machine: cylinder screen printing plate is adopted, and wedge-shaped ink scraping plate or ink scraping roller is installed in the cylinder, and the linear speed of printing plate rotation and substrate movement is the same.
(4) Electrostatic screen printing machine: stainless steel screen printing with good conductivity is used. Black powder is driven by static electricity between the positive and negative electrode plates, passes through the through hole of the printing plate and adheres to the surface of the printed piece, which is pressureless printing. The shape of the machine varies from substrate to substrate, but it generally includes substrate input part, printing part, ink fixing and drying part and substrate collection part. The printing part consists of a screen printing plate, an electrode plate and a high voltage generator.
2, according to the purpose of points
(1) Manual screen printing machine: It is generally composed of hinge bracket, printing platform and screen printing board, and all actions are operated by hand.
(2) Semi-automatic screen printing machine: a screen printing machine that realizes partial automation of various actions during printing, and the rest is still manual. It is generally called 1/4 full-automatic leveling, homogenizing and screen frame screen printing machine, and 1/2 full-automatic leveling, homogenizing, screen frame and substrate adsorption screen printing machine. In addition, the substrate can also be automatically sent to the 3/4 automatic screen printing machine.
(3) Automatic screen printing machine: Automatic printing lifting, conveying, drying and paper receiving and stacking mechanisms are respectively installed in front of and behind the 3/4 automatic screen printing machine, so that the printing speed is obviously higher than that of semi-automatic machines, and it can reach more than 1500 sheets per hour.
(4) Screen printing linkage machine: It is composed of several groups of printing and drying devices and devices such as bronzing, indentation, laminating and die cutting in series. The substrate is continuously fed on the reel, with automatic unwinding, automatic winding and positioning control mechanisms, which can ensure stable speed, accurate overprinter and consistent tension. The whole machine can be controlled by computer. It is a screen printing machine with high printing efficiency and full functions.