Shanghai Daoqin Plastics Co., Ltd.

filling 不满 　1. injection molding parts parts defect injection molding parts process full, is mold cavity has plastics or injection molding parts process less certain fine 节. 2. can can issues causes (1). injection molding parts speed degree 不足. (2). plastics short 缺. (3). screw in 行程结束处没留 lower screw material. (4).运行 time 变化. (5).射 material temperature degree low. (6). injection molding parts pressure 不足. (7).射嘴部 separation by 封. (8).射嘴 or material outer add hot device can as. (9). injection molding parts time short. (10). plastics in material 斗喉壁 upper. (11). injection molding parts machine amount small （即 injection weight or can force ）. (12). mold temperature low. (13).没 has dry injection molding parts mold anti 锈油. (13).止退 ring loss bad, material has phenomenon. 3. remedy methods (1). increase injection molding parts speed degree. (2).检查 material inner plastics amount. (3).检查 is positive setting injection 行程, need 话进行 more 改. (4).检查止逆阀 is abrasion loss or 出现裂缝. (5).检查运 as is stability. (6). increase temperature degree. (7). increase back pressure. (8). increase injection molding parts speed degree. (9).检查射嘴孔 has has material or 未塑化 plastics. (10).检查 has add hot device outer use table/sheet can amount is positive 确. (11). increase screw toward front time. (12). increase material 斗喉区 cooling amount, or reduce material rear temperature degree. (13). use relatively large injection molding parts machine. (14).适当 rise high mold temperature. (15).清理 dry injection molding parts mold inner anti agent. (16).检查 or more 换止退 ring. injection molding parts parts dimensions 差异 　1. injection molding parts parts defect injection molding parts process in weight dimensions ultra- injection molding parts mold, injection molding parts machine, plastics combined production can force. 2. can can issues causes (1).输入射 material inner plastics 不均. (2).射 material temperature degree or scope/range large. (3). injection molding parts machine amount small. (4). injection molding parts pressure unstable. (5). screw unstable. (6).运 as time 变化, solvent liquid degree 不一致. (7). injection speed degree （流 amount control ） unstable. (8). use combined injection molding parts mold plastics product types. (9).考虑 mold temperature, injection pressure, speed degree, time and holding pressure and other for product effect/influence. 3. remedy methods (1).检查 has 无充足 cooling water material 斗喉以 maintain positive temperature degree. (2).检查 is poor or hot electrical 偶. (3).检查 and temperature degree control device use hot electrical is belongs to positive type type. (4).检查 injection molding parts machine injection molding parts amount and can force, rear and injection molding parts amount and small injection molding parts material use amount comparison. (5).检查 is 否每次运 as has stability melt hot material. (6).检查回流 anti has 否泄露, has need 就进行 more 换. (7).检查 is 否错误 进 material setting. (8). ensure screw in 每次运 as 复回位置都 is stability, more 于0.4mm 变化. (9).检查运 as time 不一致 property. (10). use back pressure. (11).检查 liquid pressure system as is positive 常, temperature is high or low （25—60oC）. (12). selection combined injection molding parts mold plastics product types （ main/primary from shrink rate and machine strong/high degree 考虑）. (13). heavy new adjustment production process. shrinkage 痕1. injection molding parts parts defect usually and surface has 关（请参考“空穴”部 separation ）, but also is plastics from injection molding parts mold surface shrinkage 脱离形 formed. 2. can can issues causes (1).熔 melt temperature degree is high is low. (2). mold cavity inner plastics 不足. (3). cooling stage/phase 时接触 plastics hot. (4). runner combined 理, gate small. (5). mold temperature is and plastics features versus 适应. (6). product structure combined 理（ add strong/high high, thick, obvious thick thin 不一）. (7). cooling 效果不 good, product demolding rear shrinkage. 3. remedy methods (1). adjustment material temperature degree. (2). adjustment screw speed degree obtain positive screw surface speed degree. (3). increase injection molding parts amount. (4). ensure use positive 确 垫 material; increase screw toward front time; increase injection molding parts pressure; increase injection molding parts speed degree. (5).检查止流阀 is 否安装 positive 确, is non positive 常运行会引致 pressure 流失. (6). reduce injection molding parts mold surface temperature degree. (7).矫 positive runner pressure loss large; according to need, expand large dimensions. (8). according to use plastics features and product structure control mold temperature. (9). in 允许 情况 lower improvement product structure. (10).设 method let product has cooling. 污渍痕 and injection 纹 1. injection molding parts parts defect usually and gate has 关: its surface 黯淡, has also can to strip/profile 纹. 2. can can issues causes (1).熔 melt temperature degree high. (2). injection molding parts mold filling speed degree fast. (3). temperature degree high. (4). and plastics features has 关. (5).射嘴口存 in cold material. 3. remedy methods (1). reduce material front temperature degree. (2). reduce injection molding parts speed degree. (3). reduce injection molding parts pressure. (4). reduce injection molding parts mold temperature degree. (5). use PE production parts large more 都会存 in 射纹, can according to use requirements 修改入 material 口位置. (6).尽 can can generate cold material （ control good temperature degree ）. 注口黏著1. injection molding parts parts defect 特征 注口 by sleeve/set 牵住. 2. can can issues causes (1).注口 sleeve/set and 射嘴没 has for 准. (2).注口 sleeve/set inner plastics 份填塞. (3).射嘴 temperature degree low. (4). plastics in inner full solid, especially is relatively large 注口. (5).注口 sleeve/set 园弧面 and 射嘴 园弧面配 combined 不当, 出现装似“冬菇” runner. (6). runner 不够拔出斜 degree. 3. remedy methods (1). heavy new will and sleeve/set for 准. (2). reduce injection molding parts pressure. (3). decrease/reduce screw toward front time. (4). increase temperature degree or use 一 独立 temperature degree control device to add hot. (5). increase cooling time, more good method is use has relatively small 注口 注口 sleeve/set 代替原本 注口 sleeve/set. (6).矫 positive sleeve/set and 射嘴 配 combined 面. (7).适当 expand large runner 拔出斜 degree. 空穴 1. injection molding parts parts defect can easy in transparent injection molding parts parts “空 gas 阱” inner to can in transparent plastics in. this and thick degree has 关, but also plastics shrinkage injection molding parts parts in 心而引起. 2. can can issues causes (1). injection molding parts mold separation filling. (2).止流阀 不 positive 常运行. (3). plastics 未彻底 drying. (4).预塑 or injection speed degree fast. (5). certain 特殊材 material application equipment production. 3. remedy methods (1). increase material amount. (2). increase injection molding parts pressure. (3). increase screw toward front time. (4). reduce melt temperature degree. (5). reduce or increase injection molding parts speed degree. （例如 for non crystallization type plastics need increase 45% speed degree ）. (6).检查止逆阀 is 否裂开 or method as. (7).应 according to plastics features improvement drying conditions, let plastics drying. (8).适当 reduce screw speed and increase large back pressure, or reduce injection speed degree. injection molding parts parts bending 1. injection molding parts parts defect injection molding parts parts and mold cavity versus 似但却 is mold cavity 形状 扭曲版本. 2. can can issues causes (1). bending is is injection molding parts parts inner has more internal force. (2). injection molding parts mold filling speed degree slow. (3). mold cavity inner plastics 不足. (4). plastics temperature degree low or 不一致. (5). injection molding parts parts in ejection hot. (6). cooling or 动, temperature degree 不一致. (7). injection molding parts parts structure combined 理（如 add strong/high in in 一面, versus relatively 远）. 3. remedy methods (1). reduce injection molding parts pressure. (2). decrease/reduce screw toward front time. (3). increase cycle time （ especially is cooling time ）. from injection molding parts mold inner （ especially is relatively thick injection molding parts parts ） ejection rear 立即浸入 temperature water in （38oC） make injection molding parts parts slow slow cooling. (4). increase injection molding parts speed degree. (5). increase plastics temperature degree. (6). use cooling equipment. (7).适当 increase cooling time or improvement cooling conditions, can can ensure 动, mold temperature 一致. (8). according to 实际情况 in 允许 情况．