Shanghai Daoqin Plastics Co., Ltd.

无论 is pressure also is electrical 动式 injection molding parts machine, has injection molding parts process in 运动都会 generate pressure. control pressure, can production quality combined formed product. pressure and amount system in pressure injection molding parts machine upper, has 运动由 negative below/following as 油路执行: 1, 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, 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 injection molding parts 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 injection molding parts 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 injection molding parts mold quality ） front lower, product quality main/primary 决定於 control screw toward front stage/phase system. in pressure injection molding parts 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 parts 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 parts. 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 parts 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 parts 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, injection molding parts 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 injection molding parts 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℃ 範围 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. full electrical pressure machine force degree 测定 由於 full electrical injection molding parts machine upper in 引发运动 矢 amount 流体, therefore, can liquid pressure pressure 探测. therefore, usually using/adopting 载荷传感 device, utilizing shrink amount elastic property deformation, from 而直接测定 its force degree. full electrical injection molding parts machine manufacturing development multiple elastic property parts, assembly versus 应 伸 shrink 仪. difference in pressure and its control, can through toward injection electrical machine generate toward increase retardant force achieve, 而另一 electrical machine make screw and material material 塑化. front, has machine manufacturing using/adopting in inner can device amount system, 後 因 is “ function property and can property 不足”而放弃 该 system. pressure advantages above already pressure adjustment in injection and holding pressure process in important property. therefore, pressure 探测 准确 property and heavy property is separation key/critical factors. in ring system in, pressure 探测十 separation important, has ensure pressure 探测, adjustment device can make pressure 接近於 or and other setting value. in ring system in, 由於直接 and system versus 连接, therefore pressure 探测 准确 property and heavy property more add important. in, ring system still in use, in high machine type in application more add 广泛. generally 说, setting value speed degree control in injection process in 进行（也就 is 说, speed degree 变化由 electrical or magnetic shrinkage device 测定）, 测定後转换 is pressure adjustment. can according to 配额（配额通路） or pressure 予以启动. how to, pressure 启动通路 meanwhile as is “截口”以限 made pressure, anti material formed and injection molding parts mold loss 时, must using/adopting pressure 启动通路. 一旦形 formed 通路, holding pressure process pressure adjustment （ type 材亦不例 outer ）. liquid pressure machine pressure generally in liquid pressure in 探测, very less in injection molding parts mold in 进行. for injection molding parts 而言, must amount will 探测点靠近 mold cavity. therefore, injection molding parts mold pressure most good in 注嘴处进行, make 不太直接, can in liquid pressure inner pressure 测定. and injection molding parts mold pressure different is, inner also can through adjustment pressure control process. 当接近 injection pressure 实际达 to setting value in material injection molding parts time inner maintain this pressure 时, injection molding parts mold pressure can achieve 转换. can 直接进行, can through 探针进行（如: pressure electrical device ）. in injection molding parts mold inner 进行直接探测十 separation has 效, 唯一 局限 property is in parts upper lower 痕迹. 间接探测往往受探针 structure and effect/influence, 例如, large 会导致材 material 倾泻, make 探测准确 property 不足. pressure ratio mold cavity pressure has property relatively low, is material also 经 一段 runner 路线（ or cold or hot ）. is, pressure tool has certain advantages, main/primary 包括: in material upper 进行; need for injection molding parts mold renovation; parts upper lower 任何痕迹. through melt pressure control （ most good in mold cavity inner 进行）, can in pressure lower formed amount （随後形 formed material ） 风险. 由此, can improve/increase control has property, 避免材 material 烧焦, anti 止充模不足, shrink short cycle time, reinforcement heavy property. production can ensure system can property use 方便 传感 device 确实存 in technology issues. if requirements uniform adjustment pressure, process/workflow related difficult degree 确实不 small. pressure use device must combined below/following requirements: ▲不 can dry 扰模塑 process. ▲ can in high pressure （2500巴） and high temperature （350-400℃） lower ensure 探测精确 degree. ▲体积 small 巧, structure 坚实, in fault/failure 时便於 more 换. ▲ and material 接触时, tool has excellent wear resistance. ▲ can long ensure has property （ long time use 後出现 abrasion scratch, 污染时, can ensure amount 无偏差, 无误差, 无滞後）. ▲ provide high speed 取样（2-5 micro 秒） and standards 化通信 agreement, 如: CAN开放式版本CANbus or DeviceNet. therefore, issues relatively is complex. difficult understanding is, is 止, liquid pressure machine still will device 配置於 liquid pressure inner, full electrical machine using/adopting force degree 探测, 两者均未 using/adopting melt device. more year, melt device use 於挤塑 machine upper, is, machine for 探测範围, degree, time and structure degree and other requirements relatively low （ and machine upper 静态应 force versus ratio, 安装於 injection machine upper 时, device film upper machine fatigue force need large more ）.