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Integral molding method of plasticizing trunk lid of automobile

A trunk lid and integral molding technology, applied in household components, applications, household appliances, etc., can solve the problems of heavy trunk lid, high manufacturing cost, accident-prone, etc., and achieve simple and feasible processing technology and good collision safety sex, reducing the overall quality of the

Inactive Publication Date: 2015-09-09
NINGBO GMF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The traditional automobile trunk lid is made of steel plate through a stamping process. There are many problems in the manufacturing process of the automobile trunk lid produced by the stamping process: first, the use of steel plate makes the overall quality of the trunk lid heavier; secondly, the stamping process And molds limit the shape and structure of the trunk lid, making it difficult to form complex curved surfaces; in addition, the trunk lid is very cumbersome and complicated from material selection to processing and molding
Therefore these factors cause the production efficiency of the trunk lid to be low, the structure and shape are single, and the manufacturing cost is high
Also, cars are prone to accidents at night when their taillights or other vehicle headlights fail

Method used

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  • Integral molding method of plasticizing trunk lid of automobile
  • Integral molding method of plasticizing trunk lid of automobile
  • Integral molding method of plasticizing trunk lid of automobile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A method for integral molding of a plasticized automobile trunk lid, said molding method comprising the steps of:

[0031] Mold treatment: clean the inner surface of the mold and apply a release agent;

[0032] Mold closing: the raw material of the plasticized automobile trunk lid is added in the mold in step (1), the mold is closed, and the mold is locked to form a mold cavity with a clamp, and a pressure of 0.10MPa is applied to the mold cavity; the raw material is The fiber-reinforced composite material after modification includes the composition of the following percentages by weight: 40% epoxy resin, 45% polyamide resin, and 15% surface-modified carbon fiber; wherein, the surface-modified carbon fiber is passed as follows Method for modification treatment: soak the long carbon fiber with 63% nitric acid at room temperature for 25 minutes, then soak it in deionized water for 15 minutes, then rinse it with deionized water, and dry it at 170°C for 2 hours. Cut into c...

Embodiment 2

[0036] A method for integral molding of a plasticized automobile trunk lid, said molding method comprising the steps of:

[0037] Mold treatment: clean the inner surface of the mold and apply a release agent;

[0038] Mold closing: the raw material of the plasticized automobile trunk lid is added in the mold in step (1), the mold is closed, and the mold is locked to form a mold cavity with a clamp, and a pressure of 0.11MPa is applied to the mold cavity; the raw material is The fiber-reinforced composite material after modification includes the following composition by weight: 50% epoxy resin, 35% polyamide resin, and 15% surface-modified carbon fiber; wherein, the surface-modified carbon fiber passes through the following steps: Method for modification treatment: soak the long carbon fiber with 65% nitric acid at room temperature for 20 minutes, then soak it in deionized water for 20 minutes, then rinse it with deionized water, and dry it at 160°C for 1 hour. Cut into carbon...

Embodiment 3

[0042] A method for integral molding of a plasticized automobile trunk lid, said molding method comprising the steps of:

[0043] Mold treatment: clean the inner surface of the mold, and apply a normal amount of release agent and phosphor in turn;

[0044] Mold closing: the raw material of the plasticized automobile trunk lid is added in the mold in step (1), the mold is closed, and the mold is locked to form a mold cavity with a clamp, and a pressure of 0.12MPa is applied in the mold cavity; the raw material is The fiber-reinforced and modified composite material comprises the following composition by weight percentage: 60% of epoxy resin, 30% of polyamide resin, and 20% of surface-modified carbon fiber; wherein, the surface-modified carbon fiber is passed as follows Method for modification treatment: soak the long carbon fiber with 60% nitric acid at room temperature for 30 minutes, then soak it in deionized water for 10 minutes, then rinse it with deionized water, and dry i...

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Abstract

The invention relates to an integral molding method of a plasticizing trunk lid of an automobile, and belongs to the technical field of molding. The molding method comprises the following steps: cleaning the inner surface of a die, and coating the inner surface with a die releasing agent; adding raw materials for the plasticizing trunk lid of the automobile to the die, performing die assembly, locking the die so as to form a die cavity, and exerting 0.08-0.12MPa of pressure to the die cavity; mounting the die in a screw plastic molding machine which drives the die to rotate, rotating the die and shifting the rotating die to a heating furnace, and heating the shifted die until the raw materials in the die are heated to be melted and uniformly coated on the inner surface of the die cavity so as to form a trunk lid blank of the automobile; cooling the die, performing die sinking and die release, and taking out the blank after die release so as to obtain the trunk lid finished product of the automobile. The molding method performs an integral molding at a time in the die; the processing technology is simple and feasible; the production efficiency is high; and the production cost is low. The trunk lid is made from a fiber reinforcement modified material, so that the molding method meets the requirements for the strength and the toughness of the trunk lid, and achieves the purpose of light weight of the trunk.

Description

technical field [0001] The invention relates to a method for integral molding of a plasticized automobile trunk cover, which belongs to the technical field of molding. Background technique [0002] The traditional automobile trunk lid is made of steel plate through a stamping process. There are many problems in the manufacturing process of the automobile trunk lid produced by the stamping process: first, the use of steel plate makes the overall quality of the trunk lid heavier; secondly, the stamping process And molds limit the shape and structure of the trunk lid, making it difficult to form complex curved surfaces; in addition, the trunk lid is very cumbersome and complicated from material selection to processing and molding. Therefore these factors cause the production efficiency of the trunk lid to be low, the structure and shape are single, and the manufacturing cost is high. And, when a car's taillights or other vehicle headlights fail, cars are prone to accidents at ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C51/10B29C51/30B29K63/00B29K77/00B29K1/00B29L31/30
Inventor 秦柳虞华春刘迎林韩志忠
Owner NINGBO GMF TECH
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