Semi – automatic vacuum silk screen printing machines :
This type of printing machine has a metal vacuum table.
By installing a vacuum table, light – weight materials like paper do not move during the printing cycle and do not stick to stencil by adhesive properties of the ink.
The table plate is drilled by CNC machinery and it is internally reinforced against surface pressures.
The vacuum required for the vacuum table is provided by side – channel vacuum pumps with a minimum of -170 mbars mercury.
The system has the advantage of suing AC motors which unlike DC motors are very low noise and this is very important for an operator who is going to spend all his/her working hours near the printing machine.
Also, in custom – designed and professional machines, vacuum pressure can be easily reduced using frequency control without putting too much pressure on the motor.
Its adjustable table can be shifted in three directions with 40 mm total displacement or 20 mm on each side.
For fast detachment or attachment of suction pressure from/to vacuum table, a special valve is used.
The table’s suction has three adjustable modes :
1 – Always ON : for the basic settings.
2 – Auto : suction when printing, no suction when changing the materials.
3 – OFF : when the suction is not needed.
These machines are used for items such as labels and tags, glossy – finish leather, UV, Chinese flowers, leather artifacts, cardboard boxes and packaging, corrugated polycarbonate sheets, a variety of membranes, posters and hundreds of other uses.
Semi – automatic silk screen printing machines for glass and ceramics printing
Due to the vulnerability of glass and mirror to scratches, they shall not slide on metal surfaces.
The surface of the table must also resist printed material abrasion and should be replaceable.
The table of printing machines manufactured by this company is made of materials that cause no harm to the glass surfaces, and due to the perfectly smooth surface, the glass can be moved easily over it and it is replaceable.
Since inks used in glass printing are made of mineral and furnace materials with high concentrations, the stencil is very likely to adhere to the printed material. Therefore, in order to repel the force of adhesion and remove shadows, the precise grid isolation system is used.
During printing process, this system separates the stencil from the printed material, and the separation speed is easily and quickly adjustable during operation and on the fly. You can even adjust its starting point and print any design with high quality and good coverage.
The printed material switching system is exclusive in Iran and this company has implemented it automatically for the first time and has been very popular among glass and Securite glass plants.
Its mechanism is very fast, efficient, and simple; especially for people who have experimented with manual printing in the past, and without touching the printed design, you can replace it.
These printing machines are used for printing all kinds of glasses for LCD, heater, refrigerator, oven, and hood; automotive glass, streetcar glass, decorative glass, safety glass, stove glass and other diverse applications.
Any type of glass with of 4 mm to 20 mm thickness can be easily printed, and cutting / drilling operations on the glass surface cause no problems for the printing job.
Semi – automatic silk screen printing machines for printing objects
What is more notable in this machine is the ability to print objects with remarkable height because it must be fixed on the table by a fixture or mold.
Therefore, this semi – automatic silk screen printing machine normally prints from 50mm to 150 mm
If required, the displacement zone can be extended in the design and construction phase.
The machine’s table accepts a variety fixture or mold installations, and sliders installed on the table can be easily moved to fix the molds.
This machine is used for a variety of bent metals, metal boxes and boards, plastic utensils, home appliances’ casings, and so on.
In this program, two prints processes occur in one printing cycle.
Squeegee pressure is also customizable and each cylinder exert 250 Newton pressure on the printing surface for coverage of non – smooth areas.
Due to the type of machine design, printed material is accessible from three sides and one has detailed control over the printing process.
The print motor is also adjustable through precision electronic control, unlike pneumatic jacks that vibrate and practically seem useless at slow speeds..
It delivers a perfectly uniform and powered motion at slowest speed settings.
Its other advantage is the fixed table and moving printing bulkhead that enhances the accuracy and makes material changing faster and easier.