Shanghai Daoqin Plastics Co., Ltd.

         separation this 事, is design 必修课. can is separation has very more 方, 往往因 is 一 人习惯, or 者一 厂 做事风格, easy very more issues. if and other mold 都做出 rear 才发现. Sorry, 太晚, therefore, separation front very more 东西必 must good 预备工 as. very more 时候, to product 就开始画2D, 2D structure most more table/sheet lower structure, need processing, also 3D upper 场. 画2D时, structure 方面 东西 can to, can 发现. can 一 如碰穿, what. very less can comprehensive. therefore, 3D separation front, for product basic analysis 检查, can rear less 麻烦.

         lower 面我们以举例而 说明 this issues.

         separation has very more 方, 往往因 is 一 人 small 习惯, or 者一 厂 做事风格, easy very more issues.

        今天以风扇 is understanding its in tips/techniques:

        1, through mono -形状 analysis -斜 rate analysis large front rear 模区域, lower 图:

        2, front rear is 两 平行 面, therefore separation type its in 一 面偏置即 can, lower 图

        3, product is 修剪边界 more 余 面修剪掉, lower 图:

        4, color separation type tensile separation type 面实体, lower 图 示:

        5, use for 象-角 degree 旋转出 another 两 风叶 separation type 实体, lower 图:

        6, most large outer tensile thick degree (need front rear 模), rear product 求差:

        7, use product rear, again 以做出 separation type again 求差, lower 图:

        8, front rear formed lower 图:

        9, 渡处倒角如 lower 图:

         selection separation 模面考虑原则:

        1. parts quality 考虑,

         ensure parts dimensions degree

        A. degree requirements 部份应 in inner molding, in 公母模 inner molding, clamping 不准确而 difficult ensure degree

        B. selection separation 模面时, 应考虑 decrease small due to demolding degree formed parts large small dimensions 差异, 若模窝设 in 公模, demolding degree formed parts large small dimensions 差异太 large, parts 不允许 has relatively large demolding degree 时, using/adopting this type of structure make demolding difficult, parts appearance 无严格 requirements, can will separation in parts in 部, it can using/adopting relatively small demolding degree has demolding

         ensure parts surface requirements: separation 模面尽 can can selection in effect/influence parts appearance 部位以 and parts appearance requirements

        2. injection machine technology specifications 考虑:

        A. clamping force 考虑: can can decrease/reduce parts in separation upper 投影面积. parts in separation type upper 投影面积接近接近于 injection machine most large injection 面积时, has generate material can can, mold separation dimensions in ensure material lower, can can decrease/reduce separation 模面接触面积, increase separation 模面 接触 pressure, anti material, 并简化 separation processing

        B. sheet/plate 间距考虑: separation 模面 确定 need ensure 公母模 mold opening most short

        3. mold structure 考虑

        A. amount demolding parts

        a. is 便于塑 parts demolding, make parts in mold opening can can in 公模, need make parts and 公模 结 combined force large parts and 母模 结 combined force can, can can make difficult and between has 一定 结 combined force, need parts and mold combined force in 公模

        b. parts outer simple, inner has relatively more or complex 孔时, parts molding rear 必然留 in upper, 此时模窝 can in upper, mold opening rear can use sheet/plate ejection parts, 若模窝设 in upper, make demolding difficult

        c. belt/tape has metal parts 时, is parts shrinkage 包紧模仁, therefore 模窝应设 in 公模, mold opening rear parts in 母模, make demolding difficult

        d. parts for distribution 时, make parts in upper, using/adopting tube/pipe demolding

        e. parts has 侧孔时, can can will 模仁设 in 公模部份, 避免母模抽芯, 否则造 formed demolding difficult

        B. 侧抽芯 machine 械考虑

        a. amount 避免侧抽芯 machine 构, method 避免侧抽芯, make 抽芯尽 amount short

        b. due to slip block clamping 时锁紧 force relatively small, for/regarding 投影面积 relatively large large type parts, can will parts 投影面积 large separation 模面放 in 公母模 clamping 主平面 upper, will 投影面积 relatively small separation as is toward separation 模面, 否则斜 slip block machine must very large, or due to 锁不紧而溢边C. amount 方便浇注 system 布置: separation 模面 确定不妨碍浇注 system positive 常开设

        D. 便于排 gas: is has gas 体 排出, separation 模面尽 can can and material 流 末端 heavy combined

        E. 便于嵌 parts 安放: separation 模面开启 rear, need has 一定 空间安放嵌 parts

        F. mold structure 简化, amount decrease/reduce separation 模面 数目, amount using/adopting separation type 面. also 应考虑 mold is 否便于 processing, formed product 取出, also has separation 模面应尽 amount selection in product upper 面

        4. mold manufacturing difficult easy property 考虑

         can ensure mold machine processing easy