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Manufacturing technology method of automobile motor fan housing

A production process and fan cover technology, applied in the field of automobile motor fan cover production technology, can solve the problems of unstable injection molding conditions, product collision and scratches, low drying temperature, etc., to reduce whitening and scratches, and prolong drying. The effect of temperature, electrothermal temperature increase

Inactive Publication Date: 2014-05-21
HUIZHOU DONGFENG YIJIN IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. When the product is injection molded, the product is whitish due to unstable injection molding conditions;
[0004] 2. During the drying process of the material, due to the low drying temperature and short drying time, the product turns white during injection molding;
[0005] 3. When the product is placed after injection molding, the product and the product are placed on the rack, and the rack shakes, causing the product to collide and scratch

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] According to the technical solution provided by the present invention, the raw material used for the fan cover of the automobile motor is PP+T30%. Before injection molding, the raw material is placed in an oven at 70°C, dried for 4 hours, and the dried raw material is put into the injection molding machine. , set the pressure of the first section of the injection molding machine to 1658.3 Kg / cm 2 , the second stage pressure is 1658.3Kg / cm 2 , the three-stage pressure is 1658.3 Kg / cm 2 , the four-stage pressure is 1539.85 Kg / cm 2 , the injection speed of the first stage is 9.84mm / s, the injection speed of the second stage is 55.35mm / s, the injection speed of the third stage is 55.35mm / s, the injection speed of the fourth stage is 24.6mm / s, the end position of the first stage is 75mm, and the end position of the second stage 56mm, the end position of the third section is 14mm, set the electric heating temperature of the material tube (1 #~7#) of the injection molding ma...

Embodiment 2

[0025] According to the technical solution provided by the present invention, the raw material used for the fan cover of the automobile motor is PP+T30%. Before injection molding, the raw material is placed in an oven at 80°C, dried for 4 hours, and the dried raw material is put into the injection molding machine. , set the pressure of the first section of the injection molding machine to 1895.2 Kg / cm 2 , the second stage pressure is 1895.2 Kg / cm 2 , the three-stage pressure is 1895.2 Kg / cm 2 , the four-stage pressure is 1776.75 Kg / cm 2 , the injection speed of the first stage is 22.14mm / s, the injection speed of the second stage is 67.65mm / s, the injection speed of the third stage is 67.65mm / s, the injection speed of the fourth stage is 36.9mm / s, the end position of the first stage is 85mm, and the end position of the second stage 66mm, the end position of the third section is 24mm, set the electric heating temperature of the material pipe (1 #~7#) of the injection molding ...

Embodiment 3

[0027] According to the technical solution provided by the present invention, the raw material used for the fan cover of the automobile motor is PP+T30%. Before injection molding, the raw material is placed in an oven at 90°C, dried for 4 hours, and the dried raw material is put into the injection molding machine. , set the pressure of the first section of the injection molding machine to 2132.1Kg / cm 2 , the second stage pressure is 2132.1Kg / cm 2 , the three-stage pressure is 2132.1Kg / cm 2 , the four-stage pressure is 2013.65 Kg / cm 2 , the injection speed of the first stage is 34.44mm / s, the injection speed of the second stage is 79.95mm / s, the injection speed of the third stage is 79.95mm / s, the injection speed of the fourth stage is 49.2mm / s, the end position of the first stage is 95mm, and the end position of the second stage 76mm, the end position of the third section is 34mm, set the electric heating temperature of the material pipe (1 #~7#) of the injection molding mac...

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PUM

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Abstract

The invention discloses a manufacturing technology method of an automobile motor fan housing. The manufacturing technology method of the automobile motor fan housing comprises the following steps: drying materials, injection molding and putting products in order. The injection molding technological condition is adjusted, the drying time is prolonged, and paper baffles are formed among the formed products, so that the problems of whitening, damage caused by hitting and scratching and the like of the fan housing are prevented effectively, the quality of the automobile motor fan housing is improved, and the reject ratio of automobile motor fan housings is reduced.

Description

technical field [0001] The invention relates to the technical field of injection molding, in particular to a production process for an automobile motor fan cover. Background technique [0002] In auto parts manufacturing enterprises, the quality inspection data of the motor fan cover shows that the fan cover is prone to whitening and scratches, resulting in a high defect rate of the fan cover of the car motor. The material of the fan cover of the car motor is PP+ T30%, that is, polypropylene + 30% talc powder, in the existing production process, the injection molding steps are: molding motor as mold clamping - boost - injection - holding pressure - cooling / storage - mold opening - product removal. First, the mold clamping device closes the mold under the pressure of the injection, then the injection device raises and adjusts the pressure, injects the plastic into the mold, and then maintains the pressure to prevent the plastic from flowing back, then the plastic cools in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/77B29C45/78B29B13/06
CPCB29C45/00B29C2045/0096
Inventor 王康玉刘恒嘉刘絮刘振亮
Owner HUIZHOU DONGFENG YIJIN IND
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