Shanghai Daoqin Plastics Co., Ltd.

         mold temperature 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.

         positive 确 说 method, 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:

         add formed product crystallization degree and relatively uniform structure.

         make molding shrinkage relatively separation, rear shrinkage decrease small.

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

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

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

         make formed product appearance relatively tool gloss and good

         increase molding product flash/burrs machine 会.

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

         decrease/reduce combined obvious degree

         increase cooling time

         injection molding process in pressure adjustment 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:

        塑化 stage/phase in screw 旋转.

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

         injection and holding pressure 期间射 material screw toward 运动

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

        启动 assembly 顶杆 以 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.

         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.

        每一 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.

        闭模 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.

        闭 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.