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Gas assisting injection molding process of external opening handle

A technology of open handle and gas-assisted injection molding, applied in the field of gas-assisted injection molding, can solve the problems of floating fiber quality, high rejection rate, low product strength, etc. Effect

Inactive Publication Date: 2018-04-06
柳州市鑫裕塑胶有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Commonly used raw materials for the production of traditional handles include polycarbonate, acrylonitrile-butadiene-styrene plastics, and polyethylene terephthalate. Low product strength, floating fiber quality problems in appearance, and high scrap rate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A gas-assisted injection molding process for outwardly opening handles. The gas-assisted injection molding process for outwardly opening handles includes: raw material selection, raw material receiving, batching, injection molding, grinding, final inspection, and storage;

[0038] Raw materials are used to provide injection molding raw material formulas, abandoning the traditional combination of raw materials such as polycarbonate, acrylonitrile-butadiene-styrene raw materials and polyethylene terephthalate, and adopting a new raw material combination of nylon and fiber ;

[0039] Raw materials are received, using automatic machine tools to transfer the required raw materials, with fast speed and high degree of intelligence, which can effectively increase the injection rate;

[0040] For ingredients, use a high-temperature hot-melt machine to put nylon and fiber in a ratio of 3:7;

[0041] Injection molding includes four steps: raw material injection, gas injection, en...

Embodiment 2

[0046] The concrete steps that raw material adopts are:

[0047] The raw material combination of nylon and fiber is adopted, and the ratio of nylon and fiber is 3:7.

[0048] Further, raw material reception includes:

[0049] The required raw materials are conveyed by automatic machine tools, and the selected raw materials are placed together and conveyed together before conveying.

[0050] Further, the ingredients include:

[0051] Step 1: Turn on the high-temperature hot-melt machine and preheat for 10 minutes;

[0052] Step 2: Put the nylon and fiber mixed according to the ratio of 3:7 into the high-temperature hot-melt machine;

[0053] Step 3: After heating for 30 minutes, turn on the agitator, fully stir the nylon and fiber evenly, and the stirring time is 1 hour;

[0054] Step 4: stop stirring, keep warm for 25 minutes.

[0055] Further, injection molding includes:

[0056] The first stage: the raw material is injected, the melt enters the cavity, meets the mold w...

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Abstract

The invention discloses a gas assisting injection molding process of an external opening handle. The gas assisting injection molding process of the external opening handle includes raw material adopting, raw material receiving, burdening, injection molding, grinding, final inspection and warehousing. Commonly used raw materials for production raw materials of traditional handles comprise polycarbonate, acrylonitrile-butadiene-styrene plastics, polyethylene terephthalate and the like, the quality problems that the product strength is low and floating fibers happen to the appearance easily happen, and the rejection rate is high; and by replacing the raw materials with nylon, fibers and injecting molding materials meeting requirements, produced handles are excellent in performance, and soft and smooth in appearance, the quality problem of floating fibers of the surfaces of products in production is solved, and the rejection rate of the products is decreased by 30%. The gas assisting injection molding process can be applied to any thermoplastic plastics except especially soft plastics and part of thermosetting plastics, and thus, besides production of an external opening handle body, the gas assisting injection molding process is especially suitable for various large-wall-thickness workpieces similar with the type of handles.

Description

technical field [0001] The invention relates to the field of injection molding of outwardly opening handles, in particular to a gas-assisted injection molding process of outwardly opening handles. Background technique [0002] The injection molding process is a very important technology type in the processing of plastic products. The processing of plastic parts in most industries requires the injection molding process to complete. It involves a wide range of industries and fields, such as food, electronic appliances, instruments, automobiles and motorcycles, daily use, chemical industry, agriculture, transportation and other industries can use plastic components manufactured by injection molding technology. The new technology of gas-assisted injection molding in this project, that is, gas-assisted injection molding technology, is one of the most important developments in injection molding technology since the advent of the reciprocating screw injection machine. It uses high...

Claims

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Application Information

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IPC IPC(8): B29C45/17
CPCB29C45/1704B29C2045/1715B29C2045/1723
Inventor 蒙衍强陈卫民韦中明
Owner 柳州市鑫裕塑胶有限责任公司
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