Coating device and washing method for its nozzle

Patent metadata

Field	Value
Publication number	US-2017120306-A1
Application number	US-201615255426-A
Country	US
Kind code	A1
Filing date	Sep 2, 2016
Priority date	Oct 30, 2015
Publication date	May 4, 2017
Grant date	—

Abstract

A coating device and a washing method for its nozzle are provided. The coating device including a barrel, a nozzle connected with the barrel, and a waste sump provided below the nozzle, wherein the coating device further includes a washing bath and a washing component, the washing bath is provided at a side of the waste sump, and the washing component is provided in the washing bath, and is configured to inject washing liquid and cleaning gas to the nozzle to wash the nozzle when the nozzle is moved to the top of the washing bath.

First claim

1 . A coating device comprising a barrel, a nozzle connected with the barrel, and a waste sump provided below the nozzle, wherein the coating device further comprises a washing bath and a washing component,
the washing bath is provided at a side of the waste sump, and the washing component is provided in the washing bath, and is configured to inject washing liquid and cleaning gas to the nozzle to wash the nozzle when the nozzle is moved to the top of the washing bath.

2 . The coating device according to claim 1 , wherein the washing component comprises a fork shaped bracket with two fingers, the two fingers are both provided with liquid outlets and gas outlets at ends thereof, the liquid outlets are configured to inject dilute liquid and the gas outlets are configured to inject the cleaning gas.

3 . The coating device according to claim 2 , wherein the washing bath is provided with a guide rail therein, the guide rail is extended in a same direction as the washing bath, the fork shaped bracket is connected with the guide rail by a connection component, and the connection component is configured so that the fork shaped bracket is reciprocated along the guide rail.

4 . The coating device according to claim 3 , wherein the connection component is configured so that the fork shaped bracket is capable of rotating from a state parallel with the guide rail to a state perpendicular to the guide rail.

5 . The coating device according to claim 2 , wherein the two fingers of the fork shaped bracket are spaced by a distance larger than a maximum width of a cross section of the nozzle.

6 . The coating device according to claim 4 , wherein when the nozzle is located above the fork shaped bracket and the fork shaped bracket is in the state perpendicular to the guide rail, the two fingers of the fork shaped bracket are spaced from both sides of the nozzle by a distance of 3 to 7 mm.

7 . The coating device according to claim 3 , wherein the connection component is a running transmission shaft.

8 . The coating device according to claim 1 , wherein the washing bath is extended in a direction parallel with a direction in which the waste sump is extended.

9 . The coating device according to claim 2 , wherein the liquid outlets and the gas outlets are provided in sidewalls of the two fingers opposing to each other.

10 . A method for washing the nozzle of the coating device according to claim 1 , comprising:
moving the nozzle to the top of the washing bath; and controlling the washing component to inject washing liquid and cleaning gas to the nozzle to wash the nozzle.

11 . The method according to claim 10 , wherein the washing component comprises a fork shaped bracket with two fingers, and the two fingers are both provided with liquid outlets and gas outlets at ends thereof;
controlling the washing component to inject washing liquid and cleaning gas to the nozzle to wash the nozzle comprises: controlling a connection component of the washing component so that the nozzle is located between the two fingers of the fork shaped bracket, firstly injecting dilute liquid to the nozzle by the liquid outlets on the fingers of the fork shaped bracket, and then injecting cleaning gas to the nozzle by the gas outlets on the fingers of the fork shaped bracket.

12 . The method according to claim 11 , wherein the washing bath is further provided with a guide rail, the guide rail is extended in a same direction as the washing bath, and the fork shaped bracket is connected with the guide rail by the connection component;
controlling the connection component of the washing component so that the nozzle is located between the two fingers of the fork shaped bracket comprises: bring the fork shaped bracket of the washing component to rotate from a state parallel with the guide rail to a state perpendicular to the guide rail and to reciprocate along the guide rail.

13 . The method according to claim 11 , wherein upon the liquid outlets injecting the dilute liquid to the nozzle, the fork shaped bracket is moved on the guide rail at a speed of 100 to 200 mm/s.

14 . The method according to claim 11 , wherein upon the gas outlets injecting the cleaning gas to the nozzle, the fork shaped bracket is moved on the guide rail at a speed of 50 to 100 mm/s.

Assignees

• Boe Technology Group Co Ltd
• Beijing Boe Display Tech Co

Inventors

• Guo Yangchen
• Qi Pengyu

Classifications

• B08B3/04 Primary

  Cleaning involving contact with liquid · CPC title

• B08B3/02

  Cleaning by the force of jets or sprays · CPC title

• B05B15/555 Primary

  discharged by cleaning nozzles · CPC title

• B05B14/00

  Arrangements for collecting, re-using or eliminating excess spraying material (arrangements integral with nozzles B05B1/28) · CPC title

• B08B5/02

  Cleaning by the force of jets, e.g. blowing-out cavities {(airguns or nozzles per se B05B1/005)} · CPC title