An intelligent ink path pressure control system of an inkjet printing device and a control method thereof
An inkjet printing equipment and pressure control technology, applied in printing devices, printing, etc., can solve problems such as poor ability to resist external interference, inability to stabilize negative pressure control, negative pressure backflow, etc., to prevent nozzle clogging and maintain Negative pressure is stable and negative pressure is stable
Active Publication Date: 2022-07-22
JIHUA LAB
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Problems solved by technology
For a long time, major inkjet printer manufacturers have adopted a variety of methods to ensure the ink pressure and pressure difference at the nozzle of the nozzle, all of which need to add an additional air source device with a complex structure and high cost, and it is easy to cause negative pressure backflow , it will be unstable if the working time is longer, and the ability to resist external interference is also poor; in addition, the ink path pressure control parameters are all fixed settings, and negative pressure stability control cannot be achieved under various working conditions
Method used
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[0028] It should be understood that the terminology used herein and the specific structural and functional details disclosed are only for describing specific embodiments and are representative, but the present application may be embodied in many alternative forms and should not be construed as only Limited by the embodiments set forth herein.
[0029] In the description of this application, the terms "first" and "second" are only used for description purposes, and cannot be understood as indicating relative importance, or implicitly indicating the number of indicated technical features. Thus, unless otherwise stated, features defined as "first" and "second" may expressly or implicitly include one or more of the features; "plurality" means two or more. The term "comprising" and any variations thereof mean non-exclusive inclusion, possibly the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or combinations thereof.
[0...
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The present application discloses an intelligent ink circuit pressure control system of an inkjet printing device, comprising a circulating ink circuit and an intelligent pressure control device for controlling the circulating ink circuit, wherein the circulating ink circuit includes a first main ink cartridge, a second main ink tank The ink cartridge, the first buffer ink cartridge, the second buffer ink cartridge, supply the ink cartridge and the diaphragm pump; the intelligent pressure control device includes a rotational speed adjusting device for controlling the rotational speed of the diaphragm pump; the first buffer ink cartridge is connected to the first buffer ink cartridge through a pipeline a main ink cartridge, the second buffer ink cartridge is connected to the second main ink cartridge through a pipeline; the diaphragm pump includes an ink supply pump, a circulation pump and a return pump; the return pump cooperates with the rotational speed adjusting device and controls the The flow difference between the ink supply pump and the circulation pump. The negative pressure of the ink circuit is kept stable under multiple working states, and the quality of inkjet printing is improved.
Description
technical field [0001] The present application relates to the technical field of inkjet printing, and in particular, to an intelligent ink path pressure control system of an inkjet printing device and a control method thereof. Background technique [0002] The ejection quality of the nozzle is a key parameter of all inkjet printing equipment, and the pressure control stability of the ink path is one of the main factors that directly affect the ejection quality. Modern industrial inkjet equipment generally uses piezoelectric nozzles, and the working principle of pressure point nozzles is that when no injection command is received, the liquid in the nozzle relies on the pressure difference between its own internal and external atmospheric pressures to keep the ink in the nozzle. At the same time, a certain "moon curved surface" must be maintained to ensure the ejection quality; when the ejection command is received, the pressure wave generated by the piezoelectric causes the i...
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IPC IPC(8): B41J29/393B41J2/175B41J2/18
CPCB41J29/393B41J2/175B41J2/18
Inventor 朱云龙许伟钊孙曌华李一越
Owner JIHUA LAB