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Rigid printed circuit board spray printing negative-pressure ink supply pressure control system and method

A pressure control and ink supply technology, applied in printing and other directions, can solve problems such as large ink tube resistance, unsteady ink path pressure in the ink supply system, and undetectable ink supply pressure, so as to ensure negative pressure stability and optimize The effect of inkjet effect

Inactive Publication Date: 2012-06-20
江苏汉印机电科技股份有限公司
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] The main problems at present: 1. The long ink path leads to large internal resistance of the ink tube, and the ink path pressure of the ink supply system cannot be kept stable. 2. The ink supply pressure cannot be detected and automatically adjusted according to pressure changes.

Method used

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  • Rigid printed circuit board spray printing negative-pressure ink supply pressure control system and method
  • Rigid printed circuit board spray printing negative-pressure ink supply pressure control system and method

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Embodiment Construction

[0021] see figure 1 , the negative pressure ink supply pressure control system of the present invention comprises a vacuum pump 1, a vacuum generator 2, an air pressure sensor 3, a single-chip microcomputer 4 and a nozzle device 5;

[0022] The nozzle device 5 includes a vent 51, an ink ejection port 52, an ink storage box 53 and a float switch 54, the vent 51 is arranged on the top of the ink storage box 53, and the ink ejection port 52 is arranged on the ink storage box 53 At the bottom, the float switch 54 is arranged in the ink storage box 53;

[0023] The suction port of the vacuum pump 1 communicates with the atmosphere, the exhaust port of the vacuum pump 1 is connected to the air supply port of the vacuum generator 2, and the vacuum port of the vacuum generator 2 is connected to the air vent of the nozzle device. 51 connected, the vent 51 is connected with one end of the air pressure sensor 3 at the same time, the other end of the air pressure sensor 3 is connected wi...

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PUM

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Abstract

The invention provides a negative-pressure ink supply pressure control system and method of rigid printed circuit board spray printing equipment. The system comprises a vacuum pump, a vacuum generator, a gas pressure transducer, a singlechip and a spray head device, wherein the vacuum pump is connected with the vacuum generator, the vacuum generator is connected with the spray head device, and the spray head device is simultaneously connected with the gas pressure transducer; and the gas pressure transducer is connected with the data input end of the singlechip, and the signal output end of the singlechip is connected with the vacuum pump. The method is used for monitoring the negative pressure condition in the spray head device through the gas pressure transducer and the singlechip in real time, the operating current of the vacuum pump is adjusted so as to realize automatically controlling the stable negative pressure of the spray head device. According to the technical scheme provided by the invention, automatic control on the stable negative pressure in a negative-pressure ink supply system is realized.

Description

technical field [0001] The invention relates to a negative pressure ink supply pressure control system and method for rigid printed circuit board jet printing equipment. Background technique [0002] Rigid printed circuit board printing equipment is a kind of inkjet equipment. In the inkjet system, the ink supply system is a key technology. The size and stability of the negative pressure it provides will directly affect the quality of the inkjet system. [0003] The existing rigid printed circuit board printing ink supply method is the liquid level difference siphon ink supply method, the height of the ink cartridge is lower than the height of the nozzle, and the ink negative pressure at the nozzle is maintained by using the liquid level difference between the nozzle and the ink cartridge. Adjust the negative pressure value of the ink supply system by changing the liquid level difference between the two. [0004] The main problems at present: 1. The long ink path leads to l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/175
Inventor 李宝阮伟明朱浩王中凯
Owner 江苏汉印机电科技股份有限公司
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