Method for producing colored bumpers

A production method and bumper technology, applied to bumpers, pre-treated surfaces, and devices for coating liquid on surfaces, can solve problems such as poor production safety, low degree of automation, and low production efficiency, and achieve stable dimensional accuracy, The effect of high degree of automation and quality improvement

Inactive Publication Date: 2016-03-23
SHENYANG MINGHUA MOULD & PLASTIC TECH CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

However, many production steps in the existing automobile bumper production process rely on manual labor, which has low degree of automation, low production efficiency, and poor production safety.

Method used

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  • Method for producing colored bumpers
  • Method for producing colored bumpers
  • Method for producing colored bumpers

Examples

Experimental program
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Effect test

Embodiment Construction

[0051] see figure 1 , a kind of color bumper production method that the embodiment of the present invention provides, it comprises:

[0052] Step A1, select raw materials for plastic parts; namely, by weight percentage, polypropylene 35-55%, heat stabilizer 3-4%, processing aid 3-5%, toughening agent 12-18%, compatibilizer 4-6% %, inorganic filler 12-22%, flame retardant 5-20%, dispersant 1-1.5% and antioxidant 1.5-2%.

[0053] Step A2, before the injection molding process, the injection molding machine is preheated, and the preheating time is 15 minutes.

[0054] Step A3: Put the raw material of the plastic part into the drying cylinder for concentrated drying, wherein the temperature of the cylinder is 180-235°C, the drying temperature of the raw material is 55-70°C, and the drying time is longer than 2 hours. This step can not only remove moisture, but also reduce the occurrence of defects in the injection molding process of the product, such as bubbles, silver wires and ...

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Abstract

The invention discloses a method for producing colored bumpers. The method includes the steps that A1, plastic part raw materials are selected; A2, an injection molding machine is preheated; A3, the plastic part raw materials are fed into a drying barrel to be dried in a concentrated mode; A4, the injection molding machine is controlled to start injection molding; A5, flame treatment is conducted on a grabbed plastic part product, so that flash and burrs on the surface of the product are removed, and a pouring gate is automatically cut off; A6, the plastic part product is wiped and cleaned and fed into a high-temperature cleaning room to be cleaned; A7, the plastic part product is cleaned; A8, the cleaned plastic part product is dried and fed into a drying room to be dried, then flame treatment is conducted on the plastic part product, and the plastic part product subjected to flame treatment is fed into an ionization dust removal chamber to be subjected to ionization dust removal; and A9, a spraying robot is used for conducting three paint spraying procedures on the plastic part product in a sealed spraying booth. According to the method, the production efficiency is high, the production safety is high, and the percent of pass of products is increased.

Description

technical field [0001] The invention relates to the technical field of auto parts production, in particular to a production method of a colored bumper. Background technique [0002] In the production process of modern automobiles, the emergence of new production processes has continuously replaced the old production processes. The bumper is an important part of the car body, and has higher requirements on its appearance, performance and safety. In order to adapt to the development of modern automobiles, its production technology is constantly innovating and breaking through, and the automobile bumpers have also made a qualitative leap. However, many production steps in the existing automobile bumper production process rely on manual labor, which has a low degree of automation, low production efficiency, and poor production safety. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a production method of a colored ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D1/06B05D1/38B05D7/14B05D3/02B60R19/02B29C45/00
CPCB05D1/06B05D1/38B05D3/02B05D7/14B29C45/00B60R19/02
Inventor 孙新春何永华刘野
Owner SHENYANG MINGHUA MOULD & PLASTIC TECH CO LTD
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