A jet printing spacing regulating and controlling method based on near field electrospinning jet printing multi-needle array experiments

Abstract

The invention provides a jet printing spacing regulating and controlling method based on near field electrospinning jet printing multi-needle array experiments. The method mainly comprises the steps of: grounding a collector plate of an apparatus and electrically connecting a tip of an injector and a direct current high voltage; starting an electrostatic spinning system, wherein an X-Y-Z-U movingplatform begins to move according to a path planned by upper computer software so that an organic solvent forms a Taylor cone at the point of a jet head by the action of an electric field to realize array equally-spaced jet printing; rotating a rotary scale coded disc to drive and adjust array needle heads to rotate, so that angle adjustment is realized; calculating the demanded angle for rotationfor the array needle heads according to a formula (described in the specification), wherein x is the desired needle spacing and y is the actual needle spacing of the array needle heads. The method has the advantages of easy implementation, clear control logic and high precision.

Description

technical field [0001] The invention relates to the technical field of electrospinning jet printing control technology, in particular to a jet printing distance control method based on a near-field electrospinning jet printing multi-needle array experiment. Background technique [0002] Electrospinning technology Electrospinning technology was first proposed by Formhzls in 1934, and then Taylor et al. proposed the concept of Taylor cone for the deformation of charged polymers in the electrospinning process in 1964. It was not until the 1990s that people began to Extensive attention has been paid to electrospinning technology. However, nanofibers produced by electrospinning are difficult to collect in an orderly manner, and it is also difficult to arrange them in an orderly manner. In 2006, Sun Daoheng and others proposed the near-field electrospinning direct-writing technology. The electrospinning direct-writing technology based on near-field electrospinning utilizes the ad...

AI Technical Summary

Problems solved by technology

In the application process of near-field electrospinning jet printing technology, due to the low efficiency of near-field single-needle jet printing, researchers from universities and colleges gradually began to explore near-field multi-needle array jet printing experiments. When array printing, sometimes it is necessary to ensure that the arrangement direction of the needles is perpendicular to the direction of the traction axis, and sometimes it is necessary to explore the printing effect of different needle pitches, so needles arranged in arrays with various needle pitches are required

For the same exploratory experiment, repeated replacement of needles will add a human error factor to the experiment, and customizing an array of four-needle needles on the market usually costs more than 100 yuan, which undoubtedly increases the cost.

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