Screen printing system and cleaning method thereof

Patent metadata

Field	Value
Publication number	US-10569529-B2
Application number	US-201715785619-A
Country	US
Kind code	B2
Filing date	Oct 17, 2017
Priority date	Feb 27, 2017
Publication date	Feb 25, 2020
Grant date	Feb 25, 2020

Abstract

The present disclosure discloses a screen printing system and a cleaning method thereof. The screen printing system has a scraper cleaning region and a working region, and the screen printing system includes a scraper and a scraper cleaning unit. The scraper operates within the working region, and the scraper cleaning unit is configured to clean the scraper. The scraper and the scraper cleaning unit are configured as follows: the scraper stays in the working region, and the scraper cleaning unit moves to a position where the scraper stays to clean the scraper; or the scraper cleaning unit is positioned in the scraper cleaning region, and the scraper moves to the scraper cleaning region, so that the scraper cleaning unit cleans the scraper.

First claim

What is claimed is:

1. A screen printing system, having a scraper cleaning region and a working region, the screen printing system comprising:
a scraper, operating within the working region;
a screen cleaning region, a screen, configured to match with the scraper in the working region to perform screen printing;
a screen cleaning unit, configured to clean the screen;
wherein the screen and the screen cleaning unit are configured as follows:
the screen stays in the working region, and the screen cleaning unit moves to a position where the screen stays to clean the screen; or
the screen cleaning unit is positioned in the screen cleaning region, and the screen moves to the screen cleaning region, so that the screen cleaning unit cleans the screen;
a scraper cleaning unit, configured to clean the scraper;
wherein the scraper and the scraper cleaning unit are configured as follows:
the scraper stays in the working region, and the scraper cleaning unit moves to a position where the scraper stays to clean the scraper; or
wherein the scraper cleaning unit is positioned in the scraper cleaning region, and the scraper moves to the scraper cleaning region, so that the scraper cleaning unit cleans the scraper;
a screen moving mechanism, the screen moving mechanism comprises:
a first direction moving mechanism, comprising a first drive member and a first moving component, driven by the first drive member, the first moving component moving along a first direction;
a second direction moving mechanism, comprising a second drive member and a second moving component, driven by the second drive member, the second moving component moving along a second direction;
a first connecting mechanism, fixed to one of the first moving component and the second moving component and comprising a first guide member, an extension direction of the first guide member being the same as a moving direction of the other one of the first moving component and the second moving component; and
the screen is fixed to the other one of the first moving component and the second moving component.

2. The screen printing system according to claim 1 further comprising:
a scraper cleaning and driving apparatus, connected to the scraper cleaning unit and configured to drive the scraper cleaning unit to move; and
a scraper soaking tank, positioned in the scraper cleaning region, accommodating scraper cleaning fluid and configured to soak and clean the scraper.

3. The screen printing system according to claim 2 , wherein the scraper cleaning unit comprises a first cleaning structure and a second cleaning structure arranged oppositely to each other; and the first cleaning structure and the second cleaning structure are connected to the scraper cleaning and driving apparatus, so that at least one of the first cleaning structure and the second cleaning structure can move relative to the scraper to physically clean a surface of the scraper.

4. The screen printing system according to claim 1 further comprising a screen cleaning and driving apparatus and a screen soaking tank positioned in the screen cleaning region, and the screen cleaning and driving apparatus is connected to the screen cleaning unit and is configured to drive the screen cleaning unit to move; and the screen soaking tank accommodates screen cleaning fluid and is configured to soak and clean the screen.

5. The screen printing system according to claim 4 , wherein the screen cleaning unit comprises a screen cleaning member and/or a screen drying member, the screen cleaning member and/or the screen drying member can move within a working plane in parallel with the screen to physically clean the screen.

6. The screen printing system according to claim 1 , wherein the first direction is perpendicular to the second direction.

7. The screen printing system according to claim 1 , wherein the first moving component is a worm and gear assembly, a rack and pinion assembly, a sprocket and chain assembly, or a connecting rod assembly.

8. The screen printing system according to claim 1 further comprising a scraper moving mechanism, and the scraper moving mechanism comprises:
a third direction moving mechanism, comprising a third drive member and a third moving component, driven by the third drive member, the third moving component moving along a third direction;
a fourth direction moving mechanism, comprising a fourth drive member and a fourth moving component, driven by the fourth drive member, the fourth moving component moving along a fourth direction; and
a second connecting mechanism, fixed to one of the third moving component and the fourth moving component and comprising a second guide member, an extension direction of the second guide member being the same as a moving direction of the other one of the third moving component and the fourth moving component;
the scraper is fixed to the other one of the third moving component and the fourth moving component.

9. The screen printing system according to claim 8 , wherein the third direction is perpendicular to the fourth direction.

10. The screen printing system according to claim 8 , wherein the third moving component is a worm and gear assembly, a rack and pinion assembly, a sprocket and chain assembly, or a connecting rod assembly.

11. The screen printing system according to claim 1 , wherein the second moving component is a worm and gear assembly, a rack and pinion assembly, a sprocket and chain assembly, or a connecting rod assembly.

12. The screen printing system according to claim 8 , wherein the fourth moving component is a worm and gear assembly, a rack and pinion assembly, a sprocket and chain assembly, or a connecting rod assembly.

13. A cleaning method of a screen printing system, the screen printing system having a scraper cleaning region and a working region and comprising:
a scraper, operating within the working region; and
a scraper cleaning unit, configured to clean the scraper;
wherein a scraper cleaning method comprises following steps:
driving the scraper cleaning unit to move to the working region;
driving the scraper cleaning unit to move on a surface of the scraper so that the scraper cleaning unit cleans the scraper; and
driving the scraper cleaning unit to leave from the working region; or
driving the scraper to move to the scraper cleaning region from the working region;
driving the scraper cleaning unit to move on the surface of the scraper so that the scraper cleaning unit cleans the scraper; and
driving the scraper to return to the working region;
the screen printing system further having a screen cleaning region, a screen, configured to match with the scraper in the working region to perform screen printing;
a screen cleaning unit, configured to clean the screen;
wherein a screen cleaning method comprises the following steps:
the screen staying in the working region, and driving the screen cleaning unit to a position where the screen stays to clean the screen; or
driving the screen cleaning unit to be positioned in the screen cleaning region, and driving the screen to the screen cleaning region, so that the screen cleaning unit cleans the screen;
the screen printing system further having a screen moving mechanism, the screen moving mechanism comprises a first direction moving mechanism, comprising a first drive member and a first moving component, driven by the first drive member, a second direction moving mechanism, comprising a second drive member and a second moving component, driven by the second drive member, a first connecting mechanism, fixed to one of the first moving component and the second moving component and comprising a firs

Assignees

• Boe Technology Group Co Ltd
• Hefei Xinsheng Optoelectronics Technology Co Ltd

Inventors

• Chen Guangfei
• Jiang Qingfeng
• Liu Dagang

Classifications

• B41F35/008

  for doctor blades · CPC title

• B41F15/44

  Squeegees or doctors · CPC title

• B41F15/08 Primary

  Machines · CPC title

• B41F15/14

  Details · CPC title

• B41F35/005

  for flat screens · CPC title