Shanghai Daoqin Plastics Co., Ltd.

         how to setting screw front time?

         injection molding cycle injection molding cycle is injection molding machine formed 特定 一整 sleeve/set as time. therefore, 每 部 separation as time can can effect/influence to cycle time, need to shrink short cycle time, improve/increase production efficiency 目, separation 别考虑动 as 每 部 separation 以便辨别 can can shrink short time separation, this for 每 部 separation can 节省一点点 time. although this type of can can very less, this time add in 一起时, from shrink short percentage 看, shrink short time separation significantly. injection molding machine 空运行 time 空运行 time is injection molding machine as formed 一 完整 cycle time, has plastics in injection molding machine 里面. tube/pipe injection molding machine large small and type type how to, 当你试图 more as 时应先 understanding injection molding machine as, is it has injection molding 者确定 certain injection molding machine is has can force in high output/production volume lower production or maintain output/production volume. therefore in decrease/reduce as time front, from injection molding need 贩状态, year and 空运转 time 方面 考虑 is can decrease/reduce as time.

general purpose injection molding machine 空运行 time

         cooling time factors in injection molding cycle in is most long separation, is can can significantly 节省 部 separation. although can 计算, usually is experience 确定, 例如逐渐 reduce cooling time 直至不 deformation injection molding parts production is 止. in cooling stage/phase, need time screw (has screw or amount time), heavy new in material inner filling plastics (will injection molding material again 次放置于 mold inner). injection molding process will can 进行.

        计算 cooling time

         control cooling time main/primary effect/influence is: 1, by processing thermoplastic property plastics solid time. 2, mold inner cooling pipeline design. many injection molding 者依赖 mold design 者每时定一 特定 mold need cooling type type and amount, 但提意 use cooling system 根本不够. mold need cooling can amount must 计算出 以 obtain and as time.

         through 计算一特定 injection molding parts, plastics combined solid time, 出 数 value can can formed is to mold basic cooling requirements.

general purpose plastics different material thick cooling time (秒)

         upper 述计算数 value is material material cooling mold temperature time, in very more 实例里 this is material material cooling resistant deformation temperature degree time. this time is injection molding parts is can in deformation lower ejection. therefore above value is can understanding is most large value.

         screw front time (SFT) setting

        计算 mold filling time, in add upper 0.5秒, 并于此 setting production 约5 injection molding parts. injection molding parts need amount heavy and / or amount, rear 标明数 value. 应当计算出平均 value, rear in SFT time upper rise heavy this process (例如0.5, 1.0, 1.5, 2.0秒 and other). time increase, to injection molding parts weight or amount value maintain 不变, this 就 出 positive SFT time.

         gate dimensions for SFT effect/influence

         need make upper process has efficiency, injection molding need use combined dimensions gate, gate small can small, mold cavity 充满 熔化 plastics front cold make gate 关闭. 另一方面 gate dimensions can large. cold or semi solid plastics by gate 而进入 mold inner this gate generate pressure and 裂痕. due to this causes, thick (deep degree)应当 in 0.61至1.0t between (t is 指定部 parts thick).