Sharp quenching and sharp heating highlight molding technology of die

A molding process and mold technology, which is applied in the field of rapid cooling and rapid heating high-gloss molding technology of molds, can solve the problems of rapid heating and cooling of molds, etc., and achieve the effect of improving product appearance quality, improving surface gloss, and good product performance

Active Publication Date: 2013-02-06
KUNSHAN ESON PRECISION ENGINEERING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of appearance quality such as joint lines, flow lines, and dents in the products produced by the injection molding process that cannot realize rapid heating and cooling of the mold in the prior art, the present invention provides a mold rapid cooling and rapid heating high-gloss molding process , through the rapid switching of mold temperature to achieve the appropriate temperature requirements for different stages of the injection molding process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] 1. Mold temperature rapid heating control stage: The signal (mold opening signal) is given by the injection molding machine, and the 2T steam boiler sends high-temperature steam into the mold steam pipeline. At this time, the steam pressure is 10MPA, the steam temperature is 160°C, and the steam is filled. The time is 12 seconds, and the total time for opening and closing the mold and taking it out is 10 seconds. After the mold temperature reaches 125°C, it is fed back to the injection molding machine to allow plastic injection, and the high temperature is maintained.

[0016] 2. Plastic injection stage: ABS+PC plastic material enters the mold cavity. Because the temperature in the mold cavity is 125 degrees, the flow length of the plastic can be lengthened and better combined in the mold cavity to ensure the best appearance and precision of the injection molded parts. At the same time, the compressed air enters the mold steam pipeline. At this time, the compressed air...

Embodiment 2

[0021] 1. Mold temperature rapid heating control stage: The signal (mold opening signal) is given by the injection molding machine, and the 2T steam boiler sends high-temperature steam into the mold steam pipeline. At this time, the steam pressure is 12MPA, the steam temperature is 170°C, and the steam is filled. The time is 15 seconds, and the total time for opening and closing the mold and taking it out is 10 seconds. After the mold temperature reaches 140°C, it is fed back to the injection molding machine to allow plastic injection, and the high temperature is maintained.

[0022] 2. Plastic injection stage: ABS+PC plastic material enters the mold cavity. Because the temperature in the mold cavity is 140°C, the flow length of the plastic can be lengthened and better combined in the mold cavity to ensure the best appearance and precision of the injection molded parts. At the same time, the compressed air enters the mold steam pipeline. At this time, the compressed air press...

Embodiment 3

[0027] 1. Mold temperature rapid heating control stage: The signal (mold opening signal) is given by the injection molding machine, and the 2T steam boiler sends high-temperature steam into the mold steam pipeline. At this time, the steam pressure is 12MPA, the steam temperature is 170°C, and the steam is filled. The time is 18 seconds, and the total time for opening and closing the mold and taking it out is 10 seconds. After the mold temperature reaches 145°C, it is fed back to the injection molding machine to allow plastic injection, and the high temperature is maintained.

[0028] 2. Plastic injection stage: ABS+PC plastic material enters the mold cavity. Because the temperature in the mold cavity is 145°C, the flow length of the plastic can be lengthened and better combined in the mold cavity, ensuring the best appearance and precision of the injection molded parts. At the same time, the compressed air enters the mold steam pipeline. At this time, the compressed air press...

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PUM

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Abstract

The invention discloses a sharp quenching and sharp heating highlight molding technology of a die, belonging to the field of injection molding technology. The technology comprises the following steps: 1. sharp heating control stage of die temperature; 2. plastic injection step; 3. sharp quenching step of die temperature; and 4. die sinking step. The invention solves the appearance quality problems that the produced products have conjugation lines, flow liners, indenture and the like because the injection molding technology in the prior art can not realize the purposes of sharp quenching and sharp heating of the die. The invention provides a sharp quenching and sharp heating highlight molding technology of dies, the quick switch of die temperature reaches the temperature requirement suitable for different stages in the injection molding process, the conjugation lines on the surface of the plastic product can be effectively reduced, the surface of a product containing glass fibre does not generate floated fiber, the product texture with a texture surface is clear, and the gloss of the product surface of the highlight-surface product can be improved.

Description

technical field [0001] The invention belongs to the field of injection molding technology, in particular to a rapid cooling and rapid heating high-gloss molding technology for molds. Background technique [0002] As one of the important molding methods in plastic processing, injection molding is widely used in various fields of industrial production. With the emergence of 3C and high-tech products, especially small and high-demand products, such as the emergence of various optical display products, people have higher and higher requirements for the precision, surface quality and strength of plastic products. Injection molding Molding technology has encountered unprecedented challenges. At present, the shell shell injection molding process is to inject molten plastic into the mold cavity, and form the required shell parts after cooling. The shell parts are opened after reaching the ejection temperature to take out the parts. When using conventional injection molding technol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C45/78B29C45/73
Inventor 黄崇信
Owner KUNSHAN ESON PRECISION ENGINEERING CO LTD
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