Ink spraying type liquid crystal coating machine and exhaust method for nozzle of coating machine

Abstract

The invention discloses an ink spraying type liquid crystal coating machine and an exhaust method for the nozzle of the coating machine, and aims to reduce the liquid crystal loss, and accelerate the exhaust speed of gas in the nozzle of the coating machine. The coating machine comprises a liquid storage device, an injector, the nozzle, a first communicating pipeline, a second communicating pipeline, a third communicating pipeline, a first control valve, a second control valve, a third control valve, and a fourth control valve, and further comprises a seal cover for at least hermetically covering the outlet of the nozzle, and a fifth control valve arranged on the third communicating pipeline, wherein when the first to fourth control valves are all opened and the fifth control valve is closed, the injector, the nozzle and the liquid storage device are communicated with one another; when the first control valve, the fifth control valve and the third control valve are all opened and both the second control valve and the fourth control valve are closed, the injector and the liquid storage device are communicated with each other.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display preparation, in particular to a liquid crystal inkjet coating machine and an exhaust method for nozzles thereof. Background technique [0002] In the liquid crystal panel preparation process, it is necessary to inject liquid crystal molecules between two opposite substrates, and at this time, a liquid crystal inkjet coating machine is required. [0003] Such as figure 1 as shown, figure 1 It is a structural schematic diagram of a liquid crystal inkjet coating machine in the prior art. The liquid crystal inkjet coating machine in the prior art mainly includes: a liquid storage device 01, and an injector 02 arranged on one side of the liquid storage device 01 , the first communication pipeline 03, the second communication pipeline 04, the third communication pipeline 05, the nozzle 06, the first control valve 071, the second control valve 072, the third control valve 073, and the fo...

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Problems solved by technology

[0005] However, during the above exhaust process, the liquid crystal will be discharged from the outlet of the nozzle 06, resulting in waste of liquid crystal, and the liquid crystal in the injector 02 may not be able to discharge the gas in the nozzle 06 at one time, and the injector 02 needs to be repeatedly extracted from the liquid storage device 01. Liquid crystal requires multiple opening and closing of the control valves, which increases the exhaust time of the nozzle and reduces the production efficiency of the production line

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