Co-axial roller printing equipment and method thereof
A co-axial roller printing equipment includes a working platform, a roller, a grinding device, a cutting device and a coating structure. The working platform is configured for carrying a substrate and driving the substrate to move. The roller is disposed above the working platform and has a surface. The grinding device is disposed on the working platform and configured to contact and grind the surface of the roller. The cutting device is disposed on the working platform and configured to cut the surface of the roller to form a plurality of relief structure. The coating structure is configured to receive a slurry and coat the slurry on the relief structures. Wherein, the grinding device and the cutting device grind and cut the surface of the roller in sequence; wherein, the coating structure coats the slurry on the relief structures, then the roller prints the slurry on the substrate.
1. A co-axial roller printing equipment for coating a slurry on a substrate, the co-axial roller printing equipment comprising:
a working platform configured to carry the substrate and drive the substrate to move;
a roller configured above the working platform, the roller having a surface and rotating on an axis;
a grinding device configured on the working platform and located on a first side of the roller, the grinding device being configured to contact and grind the surface of the roller;
a cutting device configured on the working platform and located on a second side of the roller, the cutting device being configured to cut the surface of the roller to form a plurality of relief structures; and
a coating structure configured above the working platform and located on a third side of the roller, the coating structure comprising a plurality of holes corresponding to the relief structures, the coating structure being configured to receive the slurry and coat the slurry on the relief structures through the holes;
wherein, the grinding device grinds the surface of the roller and the cutting device cuts the surface of the roller in sequence; wherein, the coating structure coats the slurry on the relief structures, and then the roller prints the slurry on the substrate; wherein, the cutting process, the grinding process, the coating process and the printing process are performed without disassembly of the roller.
2. The co-axial roller printing equipment of claim 1 , further comprising a scraping plate configured on a fourth side of the roller and contacting the surface of the roller, the scraping plate comprising a plurality of grooves corresponding to the relief structures respectively, and the scraping plate being configured to scrape the excess slurry on the relief structures by the grooves.
3. The co-axial roller printing equipment of claim 2 , wherein the shape of the groove is one selected from square, rectangle, trapezoid and arc.
4. The co-axial roller printing equipment of claim 1 , wherein the substrate has a substrate surface roughness, and the relief structures have a relief structure surface roughness, the substrate surface roughness is smaller than the relief structure surface roughness.
5. The co-axial roller printing equipment of claim 1 , wherein the cutting device is configured to cut the surface of the roller to form a plurality of groove structures, and the relief structure is formed between each two groove structures.
6. The co-axial roller printing equipment of claim 1 , further comprising a controller and the working platform comprising a shifting platform, the shifting platform being configured to carry the grinding device and the cutting device and connected to the controller, the controller being configured to control the shifting platform to drive the grinding device and the cutting device to grind and cut the surface of the roller.
7. The co-axial roller printing equipment of claim 1 , wherein a gap is formed between the relief structures of the roller and the surface of the substrate.