Shanghai Daoqin Plastics Co., Ltd.

home appliances use plastics products molding processing methods main/primary has injection molding, extrusion molding, hot molding, in molding, lamination molding, pressure shrink 模塑, 传递模塑, foam plastics molding, molding, 嵌铸, and other, its in injection molding is 主.

in recent years, plastics processing new technology, new equipment in home appliances plastics products molding in to a large amount of application, precision injection molding, fast speed molding technology, injection molding technology, gas 辅/ water injection molding technology, electrical magnetic injection molding technology and film injection molding technology and other.

1.  precision injection molding

can ensure products in dimensions and weight tool has high degree and high heavy property. using/adopting this technology injection molding machine can achieve high pressure, high speed injection. due to its control methods usually is ring or ring control, therefore can for injection molding process parameters achieve high degree control.

usually, precision injection molding for mold degree requirements relatively high. currently, inner already can production in small type precision injection molding machine.

2.  fast speed molding technology

is home appliances product types toward more direction development and more new 换代而 fast speed development 起, main/primary used for made home appliances use plastics outer housing/shell. this technology advantages is, need mold can achieve parts small amount production.

currently, comparison formed fast speed molding methods has light molding and liquid UV curable molding, its in light molding method application relatively more. light equipment is light light 源, plant/unit, powder plant/unit and machine formed. its processing process is, 由计算 machine control light 头按一定轨迹进行扫描, in light 经 位置 upper, plastics micro powder hot 熔化并 adhesion in 一起, 每扫描完 one-time, micro powder plant/unit 就撒一层 thin powder, this 样, 经 反复扫描, formed tool has 一定形状 and dimensions products.

现 in, inner already has enterprise can production light molding machine and plastics micro powder, equipment property can unstable, micro powder product types grade less.

3. 熔芯 injection molding technology

usually by used for molding for coarse degree and degree requirements relatively high, can use in molding or molding methods processing type products.

currently, technology in outer application already comparison formed 熟, in inner 尚处于 别 application 状态. technology processing principle is, molding formed 空腔 芯 type, rear again use type as is parts injection molding.

in injection molding parts add hot function lower, make type 熔化流出, from formed 空腔. use technology most important is need good type material and parts melting point. usually, type material can according to specific 情况而 selection general purpose plastics, thermoplastic type elastomer or low melting point metal 如铅, and other.

4.  gas 辅/ water injection molding

applications 广泛, can molding multiple type type injection molding parts, its type products is electrical machine outer housing/shell. injection molding 时, can will gas or hot water and plastics melt 几乎同步 注入 type in.

此时, plastics melt will gas or hot water 包覆, molding plastics products is structure, parts type rear gas or water can demolding. type products tool has material, shrinkage small, appearance good, rigid property good advantages. molding equipment key/critical separation is gas or water plant/unit and its control soft parts.

in recent years, inner although for research relatively more, application speed degree relatively fast, Domestic equipment unstable.

5.  electrical magnetic injection molding technology

该 technology through electrical magnetic force function make screw in toward generate 往复振动. due to in 预塑化 stage/phase make plastics micro 塑化, from make holding pressure stage/phase parts structure more 密实, decrease small products internal stress.

this technology can used for molding requirements relatively high products light 碟. by used for products molding 时, can improve/increase products quality.

6. 覆 film injection molding technology

use technology 时, need in injection molding front will specialized decoration plastics film in mold inner, rear injection molding. film hot deformation rear can combined in parts surface, 不但美观牢 solid, but also also rear decoration steps.

generally lower, home appliances plastics products for plastics mold demand amount non large, 例如, 一台冰箱 or full 自动洗衣 machine plastics mold usually ultra- 100副, 一台空调 device 需20 more 副, color color electrical machine 需50-70副 plastics mold.

meanwhile, for plastics mold technology requirements versus for relatively high, also requirements mold processing cycle need can can short, 由此而 large large promote mold design and mold manufacturing technology development. in addition, difficult degree relatively large mold hot runner injection molding 模, injection molding and other in inner application positive in increase more.