Shanghai Daoqin Plastics Co., Ltd.

injection molding processing molding in mold temperature very easy effect/influence molding cycle and formed quality, in 实际操 as in is use most low mold temperature setting, rear according to quality 状况 适当调 high.

    mold temperature is in formed by 进行时 mold cavity surface temperature degree, in mold design and formed engineering conditions setting upper, important is not only 维持适当 temperature degree, also need can let its uniform distribution. non-uniform mold temperature distribution, 会导致 non-uniform shrinkage and internal stress, make molding easy deformation and warpage.

    improve/increase mold temperature can obtain below/following 效果:

    ① add formed product crystallization degree and relatively uniform structure.

    ② make molding shrinkage relatively separation, rear shrinkage decrease small.

    ③ improve/increase molding product strong/high degree and heat resistant property.

    ④ decrease/reduce internal stress 残留, separation toward and deformation.

    ⑤ decrease/reduce 充填时 flow anionic resistant, reduce pressure loss 失.

    ⑥ make formed product appearance relatively tool gloss and good.

    ⑦ increase molding product flash/burrs machine 会.

    ⑧ increase gate and decrease/reduce gate 部位凹陷 machine 会.

    ⑨ decrease/reduce combined obvious degree

    ⑩ increase cooling time.

 无论 is pressure also is electrical injection molding machine, has injection molding process in 运动都会 generate pressure. control pressure, can production quality combined formed product. pressure and amount system in pressure injection molding machine upper, has 运动由 negative below/following as 油路执行:

    1塑化 stage/phase in screw 旋转.

    2 slip base/seat material 道（注嘴靠近注口衬 sleeve/set ）.

    3 injection and holding pressure 期间射 material screw toward 运动.

    4 will 基材闭 combined material upper, to full 部延伸 or active clamping already formed.

    5启动 assembly ejection ejection parts.

    in full electrical pressure machine upper, has 运动由配 has magnetic iron 无刷同步 electrical machine 执行. through machine in using/adopting bearings screw, will 旋转运动变换 is property 运动. process/workflow efficiency separation 取决於塑化 process, its in, screw separation key/critical function. Mitsubishi company in production full electrical machine type process in most new launch solutions 包括一根灌 material screw （第二螺纹抱辊） and 一根配 has mixing/compounding parts screw 尖梢. this 样, can most large degree reinforcement can force and mixing/compounding 效果, shrink short screw long degree, achieve high speed 运转.

    screw must ensure material material and 均化. this process can 借助於反 pressure adjustment, 以避免 hot. mixing/compounding parts can generate high speed, 否则, 会导致 polymer degradation. types polymer tool has different most large speed, if ultra- this 一极限, separation tensile, polymer fracture phenomenon. 不, focus/key point still is in injection and holding pressure process in control screw toward front toward 运动. cooling process, inner in force, and warpage and other 方面, for ensure product quality separation important. this full mold quality 决定, for optimization cooling material 道, ensure has 效 闭 ring temperature degree adjustment 时, especially 如此. system full 独立, dry machine adjustment. and ejection and other mold 运动必 must high 效. usually using/adopting speed degree distribution 曲线, ensure active parts 准确靠近. 接触维持 force can adjustment. therefore can 断定, in 不考虑 can consumption and machine can property, add conditions same （如 mold quality ） front lower, product quality main/primary 决定於 control screw toward front stage/phase system. in pressure injection molding machine upper, this adjustment through 探测油 pressure achieve. specific 说, pressure through control sheet/plate active sleeve/set 阀门, through device generate function, to adjustment and 释放.

    injection speed degree control 包括开 ring control, semi ring control and ring control and other selection solution/scheme. ring system 依靠共 use ratio/proportion 阀. ratio/proportion force add 於 需 ratio/proportion upper, from make in injection machine in generate pressure, let injection screw 以一定 front toward speed degree 运动. semi ring system using/adopting month-on-month 例阀. ring in combined in 位置闭 combined, combined through in inner 移动而 control material amount ratio/proportion. ring system in screw speed degree combined. ring system in using/adopting speed degree device （ usually is electrical type ）, 定时探测张 force decline. ratio/proportion 阀流出 油 material through adjustment, can 补偿出现 speed degree 偏差. ring control and machine combined specialized electronics parts. ring pressure control can in injection and holding pressure stage/phase holding pressure force uniform 一致, and in 各 循 ring in ensure pressure uniform. through 探测出 pressure value for ratio/proportion 阀进行 adjustment, according to setting pressure value 进行偏差补偿. generally 说, can for liquid pressure 进行监控, is, 探测注嘴 or mold cavity in melt pressure is has methods. more add can solution/scheme is through reading or mold cavity pressure for ratio/proportion 阀进行 tube/pipe 理. in pressure 探测 基础 upper increase temperature degree 探测, especially has process/workflow tube/pipe 理. understanding material material can 承受 实际 pressure, also has according to setting pressure and temperature degree conditions forecast parts weight and dimensions. upper, through holding pressure pressure value, can will more more material material mold cavity, reduce parts shrinkage, combined design 公差（ its in 包括预设 injection molding shrinkage ）.

接近熔化 conditions 时, semi polymer 显示出极 large ratio 容变化. for 此, 充模不会 retardant parts ejection.
    pressure equipment and material amount and pressure adjustment

    离心泵 generate liquid pressure pressure can 达140巴, this pressure value especially combined injection molding. in cycle its it stage/phase, requirements obvious relatively low, remove need fast speed 塑化 特定情形（例如: PET注拉吹一步 method injection molding machine ） requirements relatively high.

    is reduce can consumption, in material high 峰期时 can using/adopting can amount and pressure 缸. solid amount in 每次旋转时移动 and other amount amount, therefore, 油泵选 type 由特定 time inner 需移动 油 amount 而定. versus electrical machine speed generally is 1440转/ separation, usually requirements assembly di 泵. has in process in （功 rate 达100％）, utilizing rate to most large degree. in process in, machine need can consumption, make need, 也 功 rate loss consumption.

    has injection molding machine using/adopting quality and other grade ratio/proportion 伺服阀. sleeve/set or above ratio/proportion 阀安装於 injection pressure machine upper, is for below/following 各 方面进行准确 control:

    mold opening speed degree （两 grade ）, speed degree （两 grade ）, safety property, injection （3-10 grade ）, add material （3-5 grade ）, and 顶杆（两 grade ）.

    mold opening pressure, pressure, mold safety property, machine tool （ material or 肘杆）, injection （充模 stage/phase one-time, stage/phase 3-10次）, and pressure （3-5 grade ）. screw speed degree （3-5 grade ）.

    slip base/seat speed degree （ machine 械注嘴靠近 mold solid semi upper injection speed degree ）以 and 顶杆 运动 speed degree （ ejection speed degree ）也 can adjustment. electrical machine through micro low 输入信号, will large 信号（输出信号）发送 to 阀门, make 伺服阀执行 adjustment function. in 伺服阀 in, micro low electrical by is liquid pressure 输出信号, pressure drop according to 需 出 material requirements 进行改进. 阀门必 must for force or general purpose 指令做出 fast speed, can heavy and low 滞後 出 material 响应. upper, currently research is frequency rate 响应, make 运行於数千赫（kHz） frequency rate force equipment （ liquid pressure 边） and electronics equipment between for 话. has material 取决於阀门 upper polymerization degree （DP） function, therefore, liquid pressure in temperature must maintain in 45-55℃ scope/range inner （ usually using/adopting ring adjustment system ）, specific according to viscosity and 渡口 几何形状而定. in inner has adjustment system, temperature degree upper rise 会导致 solvent viscosity decline; has 均衡开阀 value, can improve/increase material amount. increase system material amount, injection speed degree add fast. for high 科技伺服传动阀进行精确 control, can basic remove phenomenon, reinforcement has function heavy property.