Structure Composition of Flat Screen Printing Machine
The automatic Flat Screen Printing Machine is the structure of
the cloth moving flat screen printing machine. Flat screen printing machine
generally forms a printing combined machine with other unit machines and general
devices, which is composed of a cloth feeding device, a printing unit, and a
drying and cloth discharging device. Among them, the printing unit is the core
part of the automatic flat screen printing machine, which is mainly composed of
a cloth applicator, a cloth guide mechanism, a color frame lifting mechanism, a
scraping mechanism, and a guide belt cleaning mechanism.
1. Cloth feeding device. According to the needs, it can be used to enter the cloth and fold into the cloth to ensure that the fabric is flat and low tension and the printing guide belt enters the man-machine table simultaneously. A dust collector can also be used to remove dust, fluff and yarn ends on the fabric.
2. Patching device. In order to make the fabric evenly pasted on the guide belt, two forms of water-soluble paste patch and thermoplastic resin patch are usually used.
(1) Water-soluble paste patch: This form is through two-roller feeding device, the water-soluble paste in the pulp tank is uniformly transferred to the surface of the printing guide belt by the feeding roller, and the fabric is flat and sticky under the action of the pressing roller Paste on the guide tape. The thickness of the pulp layer can be adjusted by adjusting the gap between the pulp roller and the guide belt according to different fabric specifications and varieties. It is suitable for hydrophilic fabrics and flat screen printing machine with narrow door widths.
(2) Thermoplastic resin patch: In this form, the fabric is pressed against the thermoplastic resin-coated printing guide tape by hot pressing rollers.
The heat pressing roller adopts internal heating and the temperature is controllable. In order to ensure that the guide belt is heated uniformly, the linear pressure of the heat pressing roller is interlocked with the running speed of the guide belt. When the speed of the guide belt is high, the pressure is large. It is suitable for any fabric and flat screen printing machine of various widths, especially suitable for hydrophobic fabrics.
As is mentioned in the article Structure Composition of Flat Screen Printing Machine . The automatic Flat Screen Printing Machine is the structure of the cloth moving flat screen printing machine. Flat screen printing machine generally forms a printing combined machine with other unit machines and general devices, which is composed of a cloth feeding device, a printing unit, and a drying and cloth discharging device. Now, let’s learn something about color frame lifting mechanism, scraping device, guide belt cleaning mechanism, flower cloth dryer, etc.
1.Color frame lifting mechanism. When printing, the color frame will automatically drop to contact with the fabric and be pressed before it can scrape the color paste. After scraping, the color frame needs to be immediately raised to a certain height, completely detached from the printed fabric, and then the printed fabric travels with the guide belt-a flower The length of the color frame must be smooth, and it must be properly coordinated with the running of the guide belt and the reciprocating movement of the scraper. The lifting movement of the screen frame can be driven by an electric motor or liquid / air pressure.
2.Scraping device. Squeegee devices are divided into two types: rubber squeegee (cylinder is called a squeegee) and magnetic squeegee roller (cylinder is called a magnetic roller). The scraper-type scraping device is composed of a transmission box, a guide frame, a sliding seat, a scraper, a color frame, and a color frame adjustment frame.
3.Guide belt cleaning mechanism. In the printing process, the color paste often oozes from the front to the back of the cloth to contaminate the guide belt. The guide belt is also stuck with fluff and other contaminants. It must be cleaned in time. Therefore, a washing device for the guide belt is installed in the non-printing area of the guide belt And, this water washing device is composed of shower, water tank, wiper and so on.
1. Cloth feeding device. According to the needs, it can be used to enter the cloth and fold into the cloth to ensure that the fabric is flat and low tension and the printing guide belt enters the man-machine table simultaneously. A dust collector can also be used to remove dust, fluff and yarn ends on the fabric.
2. Patching device. In order to make the fabric evenly pasted on the guide belt, two forms of water-soluble paste patch and thermoplastic resin patch are usually used.
(1) Water-soluble paste patch: This form is through two-roller feeding device, the water-soluble paste in the pulp tank is uniformly transferred to the surface of the printing guide belt by the feeding roller, and the fabric is flat and sticky under the action of the pressing roller Paste on the guide tape. The thickness of the pulp layer can be adjusted by adjusting the gap between the pulp roller and the guide belt according to different fabric specifications and varieties. It is suitable for hydrophilic fabrics and flat screen printing machine with narrow door widths.
(2) Thermoplastic resin patch: In this form, the fabric is pressed against the thermoplastic resin-coated printing guide tape by hot pressing rollers.
The heat pressing roller adopts internal heating and the temperature is controllable. In order to ensure that the guide belt is heated uniformly, the linear pressure of the heat pressing roller is interlocked with the running speed of the guide belt. When the speed of the guide belt is high, the pressure is large. It is suitable for any fabric and flat screen printing machine of various widths, especially suitable for hydrophobic fabrics.
As is mentioned in the article Structure Composition of Flat Screen Printing Machine . The automatic Flat Screen Printing Machine is the structure of the cloth moving flat screen printing machine. Flat screen printing machine generally forms a printing combined machine with other unit machines and general devices, which is composed of a cloth feeding device, a printing unit, and a drying and cloth discharging device. Now, let’s learn something about color frame lifting mechanism, scraping device, guide belt cleaning mechanism, flower cloth dryer, etc.
1.Color frame lifting mechanism. When printing, the color frame will automatically drop to contact with the fabric and be pressed before it can scrape the color paste. After scraping, the color frame needs to be immediately raised to a certain height, completely detached from the printed fabric, and then the printed fabric travels with the guide belt-a flower The length of the color frame must be smooth, and it must be properly coordinated with the running of the guide belt and the reciprocating movement of the scraper. The lifting movement of the screen frame can be driven by an electric motor or liquid / air pressure.
2.Scraping device. Squeegee devices are divided into two types: rubber squeegee (cylinder is called a squeegee) and magnetic squeegee roller (cylinder is called a magnetic roller). The scraper-type scraping device is composed of a transmission box, a guide frame, a sliding seat, a scraper, a color frame, and a color frame adjustment frame.
3.Guide belt cleaning mechanism. In the printing process, the color paste often oozes from the front to the back of the cloth to contaminate the guide belt. The guide belt is also stuck with fluff and other contaminants. It must be cleaned in time. Therefore, a washing device for the guide belt is installed in the non-printing area of the guide belt And, this water washing device is composed of shower, water tank, wiper and so on.
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