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Piezoelectric jet type precise quantitative dispensing device and dispensing method thereof

A technology of piezoelectric spraying and dispensing devices, which is applied to the device and coating of surface coating liquid, which can solve the problems of insufficient deformation and affecting the dispensing quality, so as to improve dispensing accuracy and dispensing quality , Improve the effect of controllability

Inactive Publication Date: 2017-09-15
HENAN POLYTECHNIC UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above technical problems, the present invention provides a piezoelectric jet type precise quantitative dispensing device, which provides a large displacement output, overcomes the problems of insufficient deformation in the prior art and affects the quality of dispensing, and at the same time improves the precise control of dispensing volume

Method used

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  • Piezoelectric jet type precise quantitative dispensing device and dispensing method thereof
  • Piezoelectric jet type precise quantitative dispensing device and dispensing method thereof

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Embodiment Construction

[0014] The specific embodiment of the present invention will be described with reference to the accompanying drawings.

[0015] like figure 1 As shown, the piezoelectric jet type precise quantitative dispensing device includes a piezoelectric stack PZT driver 1, a primary amplification mechanism 2, a triple amplification mechanism 3 and a mechanical base;

[0016] The primary amplification mechanism 2 adopts the triangular amplification principle. The primary amplification mechanism 2 includes an elastic amplification mechanism body 202 and two elastic metal sheets 201. The elastic amplification mechanism body 202 is an integral structure cut by wire. The two elastic metal sheets 201 Using 65Mn material with relatively large elastic modulus, the piezoelectric stack PZT driver 1 is embedded in the body 202 of the elastic amplification mechanism through interference fit; the piezoelectric stack PZT driver 1 is connected to the piezoelectric ceramic high-voltage power supply 8; ...

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Abstract

The invention relates to the field of electronic packaging, in particular to a piezoelectric jet-type precise quantitative dispensing device and a dispensing method thereof, wherein a piezoelectric stack PZT driver is embedded in a primary amplification mechanism with an interference fit; a piezoelectric stack PZT driver and a piezoelectric ceramic High-voltage power supply connection; a metal sheet is attached to the primary amplification mechanism, and SGS strain gauges are pasted on the metal sheet; the SGS strain gauge is connected to the signal conditioning unit; there are three amplification mechanisms above the primary amplification mechanism, and the three amplification mechanisms include the lower plate, the upper plate, and the connection Rod and striker; the same end of the upper plate and the lower plate are flexibly connected, and the lower plate is also connected with the upper part of the body of the elastic amplification mechanism; the striker is inserted into the hole of the cover plate above the cavity of the mechanical base, and there is a sealing ring in the hole, and the striker is squeezed The glue in the cavity is ejected from the nozzle. The device realizes the four-time amplification of the tiny elongation generated by the piezoelectric stack PZT driver, and uses the piezoelectric stack PZT driver as the power to realize jet non-contact dispensing, which improves the dispensing quality.

Description

technical field [0001] The invention relates to the field of electronic packaging, in particular to a piezoelectric jet type precise quantitative dispensing device and a dispensing method thereof. Background technique [0002] Glue dispensing technology refers to distributing the glue to the designated position according to the predetermined trajectory with the controlled glue speed and glue output. Dispensing systems are widely used in product production, including semiconductor packaging, microelectronic packaging, SMT / PCB assembly, and even general industrial welding, injection coating and sealing. Through this system, the sizing process of the point, line and surface of the colloid can be realized. Typical jet dispensing technologies are mechanical pneumatic and piezoelectric. [0003] The mechanical pneumatic type is based on the principle of electro-pneumatic, and it occupies the market advantage due to its simple structure and low cost. However, the structure of thi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05C5/00B05C11/10
Inventor 王耿赵彦如王东升陈春朝王莹张胜奎
Owner HENAN POLYTECHNIC UNIV
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