Piezoelectric injection type precise quantification 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 , intensity and speed adjustable and controllable effects
CN105289934AInactive Publication Date: 2016-02-03HENAN POLYTECHNIC UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
HENAN POLYTECHNIC UNIV
Publication Date
2016-02-03
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention relates to the field of electronic packaging, and particularly relates to a piezoelectric injection type precise quantification dispensing device and a dispensing method thereof. A piezoelectric stack PZT driver is inlaid in a primary amplifying mechanism in interference fit; the piezoelectric stack PZT driver is connected with a piezoelectric ceramic high voltage power supply; sheet metal is adhered to the primary amplifying mechanism, and an SGS strain gage is adhered on the sheet metal; the SGS strain gage is connected with a signal conditioning unit; a thrice-amplifying mechanism is arranged above the primary amplifying mechanism and comprises a lower plate, an upper plate, a connecting rod and a firing pin; the same ends 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 an elastic amplifying mechanism; the firing pin is inserted into a hole in a cover plate above a cavity of a machine base, a sealing ring is arranged in the hole, and the firing pin extrudes a glue solution in the cavity to be ejected from a nozzle. The device realizes quartic amplification of slight elongation produced by the piezoelectric stack PZT driver, the piezoelectric stack PZT driver is used as a power to achieve injection type non-contact dispensing, and the dispensing quality is improved.
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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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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