Shanghai Daoqin Plastics Co., Ltd.

         一, design based on

         dimensions degree and its related dimensions positive property

         according to plastics products product upper specific requirements and function its outer quality and specific dimensions belongs to types: appearance quality requirements relatively high, dimensions degree requirements relatively low plastics products, toys; function property plastics products, dimensions requirements 严格; appearance and dimensions requirements very plastics products, versus machine.

         demolding degree is combined 理.

         demolding degree 直接关系 to plastics products demolding and quality, 即关系 to injection process in, injection is can 顺利进行: demolding degree has 足够;斜 degree need and plastics products in molding separation or separation versus 适应; is effect/influence appearance and thick dimensions degree;

         is effect/influence plastics products certain strong/high degree.

        二, design 程序

         for plastics products and 实体(实样) analysis and 消化:

         products 几何形状;

         dimensions, and design 基准;

         technology requirements;

         plastics 名称, grade

         surface requirements

         type amount and type 腔排列:

         products weight and injection machine injection amount;

         products 投影面积 and injection machine clamping force;

         mold outer dimensions and injection machine mold has 效面积, (or injection machine inner 间距)

         products degree, color;

         products has 无侧轴芯 and its methods;

         products production amount;

        经济效益(每模 production value)

         type amount 确定之 rear, 便进行 type 腔 排列, type 腔位置 布置, type 腔 排列涉 and mold dimensions, system design, system balanced, 抽芯(slip block) machine design, parts and type design, hot system design, above this issues also and separation type and gate selection has 关, therefore specific design process in, need necessary adjustment, to comparison design.

        三, separation type 面 确定

        不 effect/influence appearance

         has ensure product degree, mold processing, especially is type processing;

         has 利于浇注 system, gas system, cooling system design;

         has mold opening (separation 模, demolding) ensure in mold opening 时, make products 留于动模一侧;

        便于 metal block 安排.

        四, system design

        浇注 system design 包括主 runner selection, separation runner 截面形状 and dimensions 确定, gate selection, gate and gate dimensions 确定, utilizing gate 时, is ensure separation runner also attention/notes gate plant/unit design, plant/unit and gate machine 构.

         design system 时, is selection gate 位置.

         gate selection 直接关系 to product molding quality and injection process 顺利进行, gate selection 应遵循 below/following 原则:

         gate 位置应尽 amount selection in separation type upper, 以便于 mold processing and use gate 清理;

         gate 位置距 type 腔各 部位 距离应尽 amount 一致, make tool process/workflow is most short;

         gate 位置应 ensure plastics type 腔时, for type in wide 畅, thick 壁部位, 以便于 plastics 顺利流入;

         gate 位置应开设 in parts most thick 处;

        避免 plastics in lower type 腔时直冲 type 腔壁, type or parts, make plastics can fast to type 腔各部位, 并避免 type or parts deformation;

        尽 amount make products generate 熔接痕, or make its 熔接痕 generate in products important 部位;

         gate and its plastics direction, make plastics in type 腔时, can type 腔平行 direction uniform 流入, has type inner gas 体 排出;

         gate 应设置 in products upper most easy remove 部位, meanwhile can can effect/influence product appearance.

        五, gas system design

        排 gas system for ensure products molding quality 起 至关 important function.

         utilizing gas 槽, gas generally in type most rear by 充满 部位, gas deep degree plastics different 而异, basic upper is plastics generate flash most large 间隙 确定, 如ABS0.04以泥灰0.02mm below/following 赛钢0.02 below/following.

         utilizing type parts and other combined or specialized gas gas; has is anti products in ejection formed true deformation, gas 销; has is anti products and true 空吸附, design anti true 空吸附元 parts.

        六, cooling system design

         cooling system design is comparison 繁锁 工 as, need cooling and cooling uniform property, also need cooling system for mold overall structure effect/influence.

        包括:

         cooling system methods and cooling system specific 形式;

         cooling system specific and dimensions 确定;

         focus/key point 部位如动模 or parts cooling;

        侧 slip block and type cooling;

         cooling parts design and cooling standards parts selection;

        密封 structure design.