Double-end driven glass micro-nozzle processing device and processing method thereof

Abstract

The invention discloses a double-side driven glass micro-nozzle processing device and processing method. Glass tube clamping devices at two ends of a glass tube are driven to simultaneously move towards the opposite directions through the arrangement of two symmetrically arranged drive mechanisms, so that the drawing process of the glass tube is realized; two micro-nozzles with symmetrical structures are formed at two ends of a breaking point; a heater can be controlled to move to the corresponding positions at two ends of the breaking point of the glass tube to heat the nozzles, so as to finish the forging process of the two glass nozzles; and the glass nozzles are ground by a grinding device, so that the nozzles reach the required shapes. Two glass nozzles which are the same completely can be obtained in a double-end drawing manner, so that the utilization rate and the production efficiency of the material are improved; the operation is simple; and the problems of low production efficiency, low utilization rate and poor precision of the material in the past are well solved.

Description

technical field [0001] The invention belongs to the field of manufacturing micron (nano)-level glass nozzles, and particularly relates to a double-end driven glass micro-nozzle processing device and a processing method thereof. Background technique [0002] The micro-nozzle is one of the most critical components in the droplet ejection technology. The diameter of the droplet, the shape of the flow channel and the surface quality of the inner wall determine the diameter and ejection capability of the droplet. Micro-nozzle fabrication methods include photolithography, electroforming, micro-EDM (chemical) processing, glass tube drawing, etc. When the glass micro-nozzle is produced by the drawing method, glass tubes with different apertures and tapers are obtained by controlling the deformation length of the glass material and the heating time of each part. [0003] The glass micro-nozzle made by the drawing method has low fluid resistance and good compatibility with biological...

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Problems solved by technology

[0005] In order to solve this problem, domestic researchers have done related research work. For example, the design idea of ​​Chinese Patent No. 201210123632.8 is to locally heat and stretch the glass microneedle to form a micronozzle with a relatively small inner diameter at the exit. By changing the pulling force and other operations To control the geometry of microneedles, although the patent proposes an automatic micronozzle maker that can simultaneously draw and forge, this invention only integrates the process of glass tube drawing and glass microneedle forging, and There is no integrated glass micro-nozzle grinding device, so the length of the prepared micro-nozzle cannot be controlled

[0006] In addition, the existing glass pipe drawing devices are fixed at one end and movable at the other end, but during the drawing process, the heat source is fixed, so the breaking point will deviate from the heat source, resulting in deformation of both ends of the glass pipe breaking point It is an asymmetric structure with different lengths at both ends

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