Non-planar EFI printing device and method based on space-adjustable array nozzles

Abstract

The invention belongs to the field of advanced manufacturing technology, and provides a non-planar electrospray printing device and method based on an array nozzle with adjustable space. The invention first uses a high-definition CCD camera to identify the spatial topography of the printing substrate, and then transmits the measured information to Give the computer controller, the computer controller controls the rotation of the stepping motor, and the stepping motor adjusts the vertical distance of the array nozzles online through the screw nut to ensure that the distance from each nozzle to the substrate is equal; then use the syringe to apply fluid to the functional ink pressure, so that it flows out at a fixed flow rate, an electric field is applied between the printing substrate and the array nozzle, and the functional ink at the nozzle hole forms a fine jet under the action of the electric field force, and at the same time, the substrate is heated by external conditions to make the nozzle The functional ink printed on the substrate is rapidly solidified and formed, realizing the electrojet printing and manufacturing of conformal structures on non-planar substrates. The non-planar electrospray printing device and method have the advantages of simple process, short cycle, low cost and the like.

Description

technical field [0001] The invention belongs to the field of advanced manufacturing technology, and relates to a non-planar electrojet printing device and method based on an array nozzle with adjustable space. Background technique [0002] Non-planar structures have been widely used in modern communication, flexible electronic display, wearable medical and other fields. For example, the common antenna in wireless electronic communication has a non-planar structure and includes a complete radio frequency system. During preparation, it is required that all structures in the system are consistent with the shape of the carrier; curved flexible display screens are required to be able to adjust with changes in the curvature of the screen. Surface features for attaching layered structures. Fabrication of non-planar structures usually involves fabricating functional structures onto curved surfaces in some way. Traditional preparation methods include screen printing and chemical / ph...

AI Technical Summary

Problems solved by technology

Screen printing is to use the method of engraving to prefabricate the mesh on the shielding layer according to the required pattern. The distance between the mesh and the substrate is fixed. When printing a non-planar structure, the distance between the mesh and the substrate changes. , it is difficult for screen printing to adjust the distance from the mesh to the substrate in time as the curvature of the non-planar structure changes, and the prepared non-planar structure has poor uniformity

Chemical / Physical Vapor Deposition method equipment is expensive, the process is complicated, and the adaptability of materials is limited

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