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Foaming method

A foaming mold and injection foaming technology, which is applied in the foaming field, can solve the problems of slow foam flow and poor thermal insulation performance of the foamed layer, and achieve the effects of improving production efficiency, good thermal insulation effect, and fine and uniform cell diameter.

Active Publication Date: 2013-10-09
QINGDAO HAIER REFRIGERATOR INT +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to solve the problem of poor thermal insulation performance of the foam layer caused by the slow foam flow rate of the thermal insulation layer of the refrigerating device in the prior art, and to provide a foaming layer with high production efficiency, uniform foaming, and is not easy to cause abnormal foaming. complete foaming method

Method used

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.

[0029] Such as figure 2 Shown, foaming method of the present invention comprises the following steps:

[0030] Step 201: making a foaming mold;

[0031] Step 202: Inject the foaming material into the inner cavity of the mold several times, and each injection of the foaming material has a different falling point;

[0032] Step 203: The foaming material expands until it fills the inner cavity of the mold.

[0033] Among them, the following methods can be used to inject the foaming material into the inner cavity of the mold in multiple times:

[0034] Such as image 3 As shown, the frequency conversion gun head 302 is used to inject the foaming material 303 into the inner cavity...

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Abstract

The invention discloses a foaming method. The foaming method is characterized by comprising the following steps of: manufacturing a foaming module, filling foaming materials into an inner cavity of a module for multiple times, wherein the drop points of the filled foaming materials of each time are different, and foaming and expanding the foaming materials until the inner cavity of the module is fully filled. The foaming method provided by the invention has the advantages that a multi-point injection method is utilized for foaming, the flowing time of foam in a cavity of a box body is shortened, and the production efficiency is improved, the materials flow to each filling part before beginning to carry out a foaming reaction, the foaming materials are fully reacted, the diameters of foaming holes are fine and uniform, and a heat preservation effect is good.

Description

technical field [0001] The invention relates to a foaming method, in particular to a foaming method for making heat-insulating materials. Background technique [0002] With the improvement of people's living standards, people's demand for household refrigeration equipment such as refrigerators is increasing, and their performance requirements are also getting higher and higher. In order to maintain the temperature of refrigeration equipment and reduce heat transfer to save electricity, insulation layers are required for refrigeration equipment such as refrigerators. In the prior art, the foaming process is usually fixed-point and fixed-frequency injection. Such as figure 1 As shown, the injection port is preset on the foaming mold 101 , and after the foaming mold 101 is preassembled, the high-pressure gun head 102 injects the foaming material 103 into the foaming mold 101 to complete foaming. Because the fixed-point and fixed-frequency injection is to inject the foaming m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C44/08
Inventor 张晶晶贾振飞朱小兵李鹏张奎
Owner QINGDAO HAIER REFRIGERATOR INT
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