Vapour-pressure type silk-screen printing device
Technical field
The utility model relates to printing technology, particularly screen printing apparatus.
Background technology
Modern screen printing technology, utilize photosensitive material to make screen printing forme by photomechanical method, the silk screen hole of areas on screen printing forme is made to be through hole, but not the silk screen hole of areas is plugged, make ink by screen printing forme, picture and text are printed on the flat carriers such as oil painting, etching, pictorial poster, business card, binding and layout front cover, commodity packaging, product tag, printed textile, glass and metal.
Existing serigraphy is made up of top 5 factor, namely screen printing forme, scrape scraper plate (or print roller), ink, print station and stock.Serigraphy general principle is: utilize the saturating ink of screen printing forme areas mesh, and the general principle of non-graphic part mesh not strike through is printed.On screen printing forme one end, pour ink into during printing, applying certain pressure with scraping the ink position of scraper plate (or print roller) on screen printing forme, moving towards the screen printing forme other end simultaneously.Ink is expressed on stock from the mesh of areas by scraper plate (or print roller) in movement.Trace set is made within limits due to the viscous effect of ink, printing process middle scraper (or print roller) is linear contact lay with screen printing forme and stock all the time, contact wire moves with scraper plate (or print roller) and moves, owing to keeping certain gap between screen printing forme and stock, make screen printing forme when printing be produced reaction force to scraper plate (or print roller) by the tension force of self, this reaction force is called screen resilience.Due to the effect of screen resilience, make screen printing forme and stock only in portable linear contact lay, and screen printing forme other parts and stock are disengaged position, make ink and silk screen generation rhegmagenesis, avoid set-off stock.Scrape after (or print roller) crosses the whole space of a whole page when scraper plate and lift, screen printing forme also lifts simultaneously, and ink is gently scraped back initial position.So far be a print stroke.But extrude silk screen due to scraper plate (or print roller) will be adopted and move, production efficiency is lower, silk screen pressrun is poor, ink utilization rate is low, and due to scraper plate (or print roller) extruding make ink by the pressure of areas mesh be not uniform downwards, but have certain inclination angle, make printing precision obtain restriction.
Summary of the invention
The utility model object is for above the deficiencies in the prior art, provides that a kind of structure is simple, printing precision is high, and automaticity is high, the vapour-pressure type method for printing screen of energy-conserving and environment-protective and device.
The utility model object can be achieved through the following technical solutions, a kind of vapour-pressure type silk-screen printing device, and described in it, device comprises: for settling the screen printing plate rack of screen printing forme; For coordinating with screen frame, make the seal chamber forming seal cavity above screen printing forme; For controlling the compressed gas source control device of the pressure of the gas in seal chamber.
Described vapour-pressure type silk-screen printing device, it makes the structure of the seal chamber forming seal cavity above screen printing forme be on seal chamber and screen printing forme contact edge, be provided with the sealing strip that both contact surfaces are sealed.
Described vapour-pressure type silk-screen printing device, its compressed gas source control device comprises the compressed gas source providing pressure and the magnetic valve controlling gas passage between source of the gas and seal chamber.
Described vapour-pressure type silk-screen printing device, it also comprises for screen printing forme provides the ink-supplying mechanism of ink.
Described vapour-pressure type silk-screen printing device, its ink-supplying mechanism comprises, and what can control the quantity of ink of note on screen printing forme notes the ink supply mouth on screen printing forme for ink control device and the more than one ink that makes be arranged on seal chamber.
Described vapour-pressure type silk-screen printing device, it is two or more for ink control device, can control the timesharing of the ink of different colours, the injection of component.
Described vapour-pressure type silk-screen printing device, its device also comprises the cleaning device of seal chamber capable of washing and screen printing forme.
Described vapour-pressure type silk-screen printing device, its printing equipment is provided with automatic control chip and command input, for controlling compressed gas source control device, supplying the automatic operation of ink control device and cleaning device.
The utility model compared with prior art, air pressure mode replaces scraper plate to be forced on stock by ink, save scraper plate shift action, be conducive to Automated condtrol, production efficiency is high, silk screen is without hard object contact friction, improve service life, increase ink utilization rate, and owing to being air pressure, act on pressure on silk screen evenly, printing effect is better.
Accompanying drawing explanation
Fig. 1 is basic principle schematic of the present utility model;
Fig. 2 is expansion principle schematic of the present utility model.
Detailed description of the invention
As shown in Figure 1, a kind of vapour-pressure type silk-screen printing device of the utility model, it is the mobility making full use of ink, the surface tension of fluid, relation between fluid gravity and gas pressure intensity, above screen printing forme 10, be provided with seal cavity 20, control the pressure of seal cavity 20, make full use of the mobility of ink, the surface tension of fluid, the characteristics such as fluid gravity, make the ink be placed on screen printing forme, strong in seal cavity 20 internal control superzapping, the ink be placed on the screen printing forme on printed material 5 is evenly launched rapidly, and by through hole on screen printing forme, transfer on printed material 5.
As shown in Figure 2, a kind of vapour-pressure type silk-screen printing device, the device of this embodiment comprises: for settling the screen printing plate rack 1 of screen printing forme 10; For coordinating with screen frame 1, make the seal chamber 2 forming seal cavity 20 above screen printing forme; For controlling the compressed gas source control device 3 of the compressed gas source 6 of the pressure of the gas in seal chamber 2.In described vapour-pressure type silk-screen printing device, for making to form seal cavity 20 above screen printing forme 10, its structure is, seal chamber 2 with screen printing forme 10 contact edge are provided with the sealing strip that both contact surfaces are sealed, the present embodiment is the contact position that seal chamber 2 coordinates with screen frame 1, is provided with sealing joint strip 8.This device is also provided with as screen printing forme provides the ink-supplying mechanism 7 of ink; This Gong Mo mechanism can be one or more, can be different colors, can with regard to the ink of different colours, and the note of different time, different amount is on screen printing forme 10.
Described vapour-pressure type silk-screen printing device, its device also comprises the cleaning device 9 of seal chamber capable of washing and screen printing forme, in order to control the cleaning of ink after finishing printing.
Enforcement of the present utility model, can be designed to full automatic vapour-pressure type silk-screen printing device, its printing equipment is provided with automatic control chip and command input, for controlling compressed gas source control device, supplying the automatic operation of ink control device and cleaning device.