Shanghai Daoqin Plastics Co., Ltd.

● mold structure for injection molding products warpage deformation effect/influence
　　 in mold design 方面, effect/influence parts deformation factors main/primary has system, cooling system and ejection system and other. 　　　 injection molding mold gate 位置, and gate amount will effect/influence plastics in mold type inner filling 状态, from 而导致塑 parts generate deformation. 　　 flow 距离越 long, 由冻结层 and in flow between flow and shrink internal stress large; 反之, flow 距离越 short, from gate to made parts flow flow time short, 充模时冻结层 thick degree decrease thin, internal stress reduce, warpage deformation therefore large is decrease/reduce. in injection process in, parts cooling speed degree non-uniform will formed parts shrinkage non-uniform, this type of shrinkage 差别导致 bending force generate make parts warpage. 　
●塑化 stage/phase for products warpage deformation effect/influence
　　塑化 stage/phase 即玻璃态 material 粒转化 is viscous 流态, provide 充模 需 melt. in this process in, polymer temperature degree in toward, toward (versus for screw 而言) temperature make plastics generate force; another, injection machine injection pressure, speed rate and other parameters large effect/influence 充填时 separation orientation degree, 进而引起 warpage deformation. 　　
●充模 and cooling stage/phase for products warpage deformation effect/influence
　　 temperature degree for warpage deformation effect/influence in below/following several 方面. 　　(1) parts upper, lower surface temperature 差会引起 hot force and hot deformation; 　　(2) parts different between temperature degree will different 区域间 non-uniform shrinkage; 　　(3) different temperature degree 状态会 effect/influence plastics parts shrinkage rate. 　　
● demolding stage/phase for products warpage deformation effect/influence
　　塑 parts in type cooling room temperature process in more is 玻璃态 polymer. demolding force balanced, launch machine 构运动不平稳 or demolding ejection 面积不当 very easy make products deformation. meanwhile, in and cooling stage/phase in parts inner force due to outer 界 约束, will deformation 形式释放出, from 而导致 warpage deformation. 　　
● injection molding products shrinkage for warpage deformation effect/influence
　　 injection molding products warpage deformation causes in parts non-uniform shrinkage. if in mold design stage/phase 不考虑 filling process in shrinkage effect/influence, products 几何形状会 and design requirements versus very large, heavy deformation make products waste. remove filling stage/phase 会引起 deformation outer, mold upper lower temperature degree will 引起塑 parts upper lower surface shrinkage 差异, from generate warpage deformation. 　
●残余 hot force for products warpage deformation effect/influence
　　 in injection molding process in, hot force is warpage deformation important factors, but also for injection molding products quality has relatively large effect/influence. due to hot force for products warpage deformation effect/influence non complex, mold design can 借助于 injection molding CAE soft parts analysis and forecast.
●结论
　　 effect/influence injection molding products warpage deformation factors has very more, mold structure, plastics material hot physical properties and injection molding process conditions and parameters for products warpage deformation has different degree effect/influence. therefore, for injection molding products warpage deformation mechanism research must comprehensive 考虑整 molding process and material property can and other more factors.