1, scraping system and back to the ink system
Screen printing machine scraping plate and the back of the ink plate are normally installed in scraping slide rack, in printing stroke and ink back stroke, to scrape ink slab and ink plate alternately back ups and downs, respectively scraping and back to the action of ink.Scraper in general plane of ups and downs, semi-automatic screen printing machine adopts mechanical commutation, the precision semi-automatic flat screen printing machine adopts pneumatic control more.
2, scraper and slides
Scraping plate is installed on the scraper bridge, the scraper mobile screen printing machine, scraping scraper can move along the track.Scraper movement is to achieve the main movement of the scraper printing ink or back, the reciprocating stroke is the calendar printing length you need.Asked scraper printing, trajectory and printing ensure parallel platform, and realize the uniform motion as much as possible.
3, printing device of transmission
Silk screen printing machine is mostly through the belt, gear, turbine worm reducer drive and stepless speed regulation system, also have the needle wheel, CAM crank mechanism, parallel four linkage or chain transmission.The former has simple structure, easy operation, but the movement is not uniform;The latter is stable, but the complex structure.Printing device of mechanical and electrical control system and electric control system can be used to drive control.
4, network version of the elevator
In order to ensure that screen printing screen printing screen lifting or ups and downs of consistency, ensure accuracy of repetitive motion, printing device components manufacture high accuracy requirement.
5, electrical control devices
Electrical control device generally has three kinds of control functions:
The work cycle control: single loop control, loop control, etc
Negative pressure control, such as vacuum adsorption devices continue to breathe in, don't breathe in control
Each work cycle of the scraper position control: such as censorship, no control of censorship
6, other devices
Some screen printing machine for security reasons, is equipped with emergency stop control.Some have secondary printing and secondary risk control system device.
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