Micro piezoelectric sprayer based on iris turbofan and nozzle aperture regulation and control method

Abstract

The invention discloses a micro piezoelectric sprayer based on an iris turbofan and a nozzle aperture regulation and control method. The micro piezoelectric sprayer based on the iris turbofan comprises a micro motor of a driving gear, the iris turbofan meshed with the driving gear, and a piezoelectric sprayer body arranged above the iris turbofan. And the exterior of the iris turbofan is meshed with the driving gear through an outer driven gear and an inner driven gear which are integrally formed. The interior of the iris turbofan is meshed with the inner driven gear through a plurality of thin metal blades provided with blade gears, and the multiple blades are overlapped to form a nozzle with the adjustable hole diameter. The piezoelectric nozzle has the beneficial effects that the aperture size of the nozzle can be flexibly adjusted, the function that one piezoelectric nozzle is used for jet printing of different precision sizes is achieved, and the requirements of various jet printing targets are met.

Description

technical field [0001] The invention belongs to the technical field of piezoelectric inkjet printing devices, and in particular relates to a micro piezoelectric nozzle based on an iris turbofan and a nozzle aperture control method. Background technique [0002] Piezoelectric inkjet printing technology, as a non-contact, pressure-free, and mask-free printing technology, can accurately spray small droplets on the desired position, and form a thin film after the solvent evaporates, dries and solidifies. The piezoelectric inkjet printing process has the advantages of low cost, large area, and environmental protection, making this technology gradually become a wet method for preparing microelectronic devices, such as organic electroluminescence OLED devices, color filters in LCDs, organic thin film field effect Transistors, LED packaging and wearable electronic devices, etc. [0003] At present, there are many technical difficulties in the ultra-high precision requirements of pi...

AI Technical Summary

Problems solved by technology

However, the smallest diameter of the existing piezoelectric nozzles is at the micron level, which cannot complete the printing preparation of sub-micron pixels, and the small-sized nozzles have extremely high requirements for manufacturing technology and are extremely expensive

When the nozzle is left standing for a long time, the small-aperture nozzle is prone to the problem of nozzle clogging

In addition, the piezoelectric nozzles of each nozzle size can only be used in a single specific occasion. Once the printing target and printing requirements change, the piezoelectric nozzles of the corresponding size must be replaced, which reduces production efficiency.

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