Plastic injection moulding technology

A process and plastic technology, applied in the field of production technology of plastic products, can solve the problems of uneven color of plastic products, inability to fully mix color powder and materials, and achieve the effects of preventing uneven color, convenient operation and simple process.

Inactive Publication Date: 2015-01-07
NINGGUO GUANYU MOLD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a plastic injection molding process, which solves the problem that in the prior art, the injection molding process cannot fully mix the toner and the material, so that the color of the plastic product is uneven

Method used

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Embodiment Construction

[0021] The technical solution of the present invention will be further described in detail below in conjunction with specific embodiments.

[0022] A plastic injection molding process is characterized in that it comprises the following steps:

[0023] (1) Ingredients: mix the raw materials according to a certain ratio, and stir evenly;

[0024] (2) Melting and plasticizing: Put the prepared raw materials into the injection molding machine, heat them to 250-350°C with ultrasonic vibration, and keep them warm for 10-25 minutes. The vibration frequency of ultrasonic waves is 18-25kHz, and the high The high-frequency oscillation signal is converted into high-frequency mechanical oscillation by the transducer and propagated to the material, and then converted into heat energy, so that the material is heated rapidly, and the thermal efficiency is high. In addition, due to the cavitation effect of the ultrasonic wave, the toner and material can be promoted. Mix well to prevent uneve...

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Abstract

The invention discloses a plastic injection moulding technology, and relates to the field of the manufacturing technique of plastic products. The technology comprises the following steps of burdening, wherein raw materials are mixed according to a certain matching ratio and are evenly stirred; molten plasticizing, wherein the matched raw materials are put into an injection moulding machine and are heated to a certain temperature by adopting ultrasonic vibration, and heat preservation is carried out for 10 minutes to 25 minutes; pressure application injection, wherein under a certain pressure and speed, the molten raw materials are injected into a mould cavity through an injection device; mould filling cooling, wherein after the mould cavity is filled with the molten raw materials, a certain pressure is kept, and the molten raw materials are waited to be cooled and cured; mould ejection part taking; after the raw materials are completely cooled, mould sinking is carried out, and a mould ejection mechanism is used for ejecting out a product. According to the technology, ultrasonic vibration heating is carried out, colourment can be mixed with materials better, and the uneven color phenomenon can be obviously improved; in addition, due to ultrasonic vibration heating, energy resources can be saved, plasticizing time of the raw materials can be shortened, and the technological process is shortened.

Description

technical field [0001] The invention relates to the field of production technology of plastic products, in particular to a plastic injection molding technology. Background technique [0002] Injection molding machine, also known as injection molding machine or injection machine, is the main molding equipment for making thermoplastics or thermosetting plastics into various shapes of plastic products with plastic molding molds. It is divided into vertical, horizontal, and all-electric types. The injection molding function The plastic is heated and high pressure is applied to the molten plastic, causing it to shoot out and fill the mold cavity. [0003] The heating system of the injection molding machine is used to heat the barrel and the injection nozzle. The barrel of the injection molding machine generally uses an electric heating coil as a heating device, which is installed outside the barrel and detected in sections by thermocouples. The heat conducts heat through the barr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/74B29C45/46
CPCB29C45/74B29C35/08B29C45/16B29C45/46
Inventor 汪小兵
Owner NINGGUO GUANYU MOLD
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