A foaming process for a small single-door refrigerator
A single-door refrigerator and box technology, which is applied to household components, household appliances, other household appliances, etc., can solve the problems of uneven mixing, improper foaming raw material ratio, cavitation and leakage of box body, etc. Probability of bubble leakage phenomenon, improve efficiency and product qualification rate, solve the effect of easy bubble bulging deformation
Active Publication Date: 2017-11-03
CHUZHOU JIAJIAAI ELECTRICAL TECH
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
The traditional refrigerator box foaming process is prone to the phenomenon of box foaming, cavitation and leakage. In addition, if the ratio of foaming raw materials is improper, the mixing is uneven, and the time control is unreasonable, it is easy to cause the problem of bulging and deformation of the box.
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0028] The present invention will be further described below in conjunction with specific embodiments.
[0029] A foaming process for a small single-door refrigerator box, characterized in that it consists of the following steps:
[0030] S1 Increase the mold temperature: turn on the heating switch of the ground ring drying tunnel 1 hour in advance, and drive the foaming mold trolley to the drying tunnel to increase the mold temperature;
[0031] S2 metering material ratio:
[0032] (6) Turn on the main switch of the power supply of the foaming platform and the switch of the ventilation equipment; connect the nitrogen pipeline, and check the pressure, so that the pressure is controlled at 0.5-0.8Mpa;
[0033] (7) Turn on the foaming machine and the pumping pump, input the two groups of raw materials of isocyanate (black material) and combined polyether (white material) into the black and white storage tanks of the foaming machine respectively, and start stirring to ensure tha...
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Abstract
The invention discloses a foaming process for a small single-door refrigerator box, which consists of the following steps: increasing the mold temperature, measuring the material ratio, making a foaming sample, checking the foaming parameters, taking the box shell, sticking a fixed temperature control pad, weighing Measure the box shell and box body foaming, curing, and take out the foaming box body. The invention aims at the phenomenon that the foaming cavity and leakage of the box body are prone to occur in the traditional refrigerator box foaming process. Fully mixed, the initial conditions of foaming are controlled scientifically and reasonably, which not only greatly reduces the probability of cavitation and leaking bubbles, but also solves the problem of easy foaming and deformation of traditional foaming process, not only improves the efficiency of foaming And product qualification rate, and reduce the cost of production.
Description
technical field [0001] The invention relates to the field of cabinet foaming technology, in particular to a foaming technology for a small single-door refrigerator cabinet. Background technique [0002] The foaming of the refrigerator box is an important process in the refrigerator production process. The quality of foaming will affect the use of the refrigerator, and the speed of foaming will affect the efficiency of the production line. [0003] The foaming of the refrigerator box is to inject the foaming raw materials (MDI, combined polyether, foaming agent) that meet certain technical standards into the door or box through polyurethane foaming equipment according to certain process requirements. In the process of chemical reaction under certain conditions, foaming can provide refrigerators with good specific strength, dimensional stability, adhesive performance and thermal insulation performance. The traditional refrigerator box foaming process is prone to the phenomeno...
Claims
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IPC IPC(8): B29C44/04B29C44/42B29C44/60
CPCB29C44/0407B29C44/0492B29C44/42B29C44/60B29L2031/7622
Inventor 张双福杜鹏汉王玉洁
Owner CHUZHOU JIAJIAAI ELECTRICAL TECH