Control method for dry ice cleaning of chip packaging mold

A dry ice cleaning and chip packaging technology, applied in cleaning methods and utensils, chemical instruments and methods, etc., can solve the problems of packaging plastic residues, reduce the quality of chip packaging products, etc., and achieve the effect of improving the cleaning effect.
CN109433741AInactive Publication Date: 2019-03-08XIAMEN UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XIAMEN UNIV OF TECH
Publication Date
2019-03-08
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a control method for dry ice cleaning of a chip packaging mold. The control method comprises the following steps that S1, according to the pollution degree of the chip packagingmold to be cleaned, cleaning parameters of cleaning equipment are determined, wherein the cleaning equipment comprises a dry ice cleaning machine, a spray gun used for jetting dry ice, and an air compressor used for providing compressed air for the dry ice cleaning machine, the air compressor is connected to an air inlet pipe of the dry ice cleaning machine, the spray gun is connected to an air outlet pipe of the dry ice cleaning machine, and the dry ice cleaning machine provides solid dry ice particles for the spray gun; S2, the spraying direction and the spraying position of the spray gun are adjusted; S3, the chip packaging mold is heated; and S4, the dry ice cleaning machine is started, and cleaning is carried out according to the set cleaning parameters. According to the control method, the cleaning efficiency of the chip packaging mold is improved, and the relatively high economic efficiency and market value are achieved.
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Description

technical field

[0001] The invention relates to the field of semiconductor mold cleaning, in particular to a control method for dry ice cleaning of chip packaging molds. Background technique

[0002] Common mold cleaning methods are high-pressure water gun and sandblasting cleaning, but the high-pressure water gun cleaning method with water as the cleaning medium is easy to rust the mold, and the sandblasting cleaning method with sand as the cleaning medium is easy to damage the equipment and reduce the precision of the mold. The recently developed dry ice cleaning method using dry ice as the cleaning medium uses the physical characteristics of dry ice to clean the dirt on the surface of the mold without damaging the mold. It has the characteristics of environmental protection, economy, long service life, safety and efficiency.

[0003] Patent CN105107795B discloses a method for cleaning the surface of electrical components and precision hydraulic parts with dry ice, which i...

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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