Production technology of automobile bumper

An automobile bumper and production process technology, applied in the field of bumpers, can solve the problems of difficult to effectively guarantee product quality, complex automobile bumper production process, etc. Effect

Inactive Publication Date: 2018-02-23
JIANGYIN DEGITEC CASTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing automobile bumper production process is complicat

Method used

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Embodiment Construction

[0012] A production process for automobile bumpers, which includes the following steps in sequence: selected raw materials, baking materials, injection molding by precision injection molding machines, plastic parts trimming, upper part spraying, deep cleaning, drying, primer spraying, high-temperature drying, spraying , High-temperature drying, part inspection, post-processing, accessory assembly, product packaging, the temperature of the injection molding machine: raw material drying temperature 80-100 ℃, barrel temperature 200-250 ℃, hot runner temperature 230-240 ℃, mold Surface temperature 20~30℃, screw speed 40~70 rpm, raw material injection speed 37~43, 27~32, 22~27mm / s, injection time 7~15sec, injection pressure 430~460, 260~290, 80 ~110bar, cooling time 20~35sec.

[0013] Preferably, except that the product has no appearance quality defects, the gloss value measured by a special gloss meter at an oblique angle of 20 degrees is above 85, and the orange peel value of the...

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PUM

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Abstract

The invention relates to an automobile bumper production process, which comprises the following steps in sequence: selected raw materials, baking materials, injection molding by precision injection molding machines, plastic parts trimming, upper part spraying, deep cleaning, drying, primer spraying, high-temperature baking Drying, spraying, high-temperature drying, part inspection, post-processing, accessory assembly, product packaging, the temperature of the injection molding machine: raw material drying temperature 80-100 ℃, barrel temperature 200-250 ℃, hot runner temperature 230-240 ℃, mold surface temperature 20~30℃, screw speed 40~70 rpm, raw material injection speed 37~43, 27~32, 22~27mm/s, injection time 7~15sec, injection pressure 430~460, 260~ 290, 80~110bar, cooling time 20~35sec. The automobile bumper production process of the present invention has high firmness and impact resistance of injection molded parts, can control the defect types of injection molded parts to the greatest extent, and improves the qualified rate of paint spraying in the next process; the paint has strong adsorption and meets domestic requirements. All kinds of high-end cars supporting the requirements.

Description

technical field [0001] The invention relates to the bumper industry, in particular to an automobile bumper production process. Background technique [0002] The front and rear ends of the car are equipped with bumpers, which not only have decorative functions, but more importantly, are safety devices that absorb and ease external impact, protect the body and protect the occupants. Among them, the outer plate and buffer material are made of plastic, and the beam is stamped with a cold-rolled sheet with a thickness of about 1.5 mm to form a U-shaped groove; the outer plate and buffer material are attached to the beam, and the beam is connected with the longitudinal beam of the frame by screws. disassembled. The plastics used in this plastic bumper are generally made of polyester and polypropylene, and are made by injection molding. For example, the bumper of the Peugeot 405 sedan is made of polyester materials and made by reaction injection molding. The bumpers of Volkswage...

Claims

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Application Information

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IPC IPC(8): B29C45/00B29C45/76B29C45/78B29C45/77B29L31/30
CPCB29C45/0053B29C45/76B29C45/77B29C45/78B29C2045/0077B29C2045/0079B29C2945/76498B29C2945/76531B29C2945/76561B29C2945/76605B29L2031/3044
Inventor 卞陈忠
Owner JIANGYIN DEGITEC CASTING
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