Shanghai Daoqin Plastics Co., Ltd.

1, mold opening pressure ring 面积偏 small
mold opening force = mold opening pressure ring 面积× mold opening pressure
in most high pressure conditions lower also add large mold opening force, can through add large mold opening pressure ring 面积, can through add large 油缸直径 or decrease small active 塞杆直径 from improve/increase mold opening pressure ring 面积.
2, mold opening 油间隙太 small
in mold opening 一段, due to liquid pressure sleeve/set and front cover/cap inner 孔 配 combined 间隙太 small, pressure slow difficult 以进入油缸开 mold cavity, therefore method provide most large mold opening force. add large liquid pressure sleeve/set and front cover/cap inner 孔 配 combined 间隙, make pressure can speed 进入油缸 mold opening
 
腔并形 formed tool has 一定冲 amount mold opening force, can can mold opening 会出现一定 impact.
3, high pressure rear θ角 ultra- 90°导致反铰
machine parameters design and 锁模油缸行程 and 安装位置决定 most rear high pressure 锁模时 small 铰 终止位置并形 formed 一 θ角, design θ角必 must ensure in parts processing 累计公差 scope/range inner 安装出 machine its θ角 need for small 于90°, 一旦θ角 ultra- 90°, small 铰出现反铰, this mold opening 瞬间实际 is will and long 铰往直线 direction make its generate more large clamping force, most therefore mold opening force small 不足以克服 add large clamping force generate deformation force, therefore its mold opening 瞬间无 method formed. 我司120吨伺服 machine design θ角 non 常接近90°, amount 留 不 more, can can parts processing ultra- 差 relatively large generate 累积误差太 more can can less 数出现反铰 phenomenon, therefore design, shrink short active 塞杆行程 and active long degree, decrease low θ角; machine easy method can in 锁模油缸 front cover/cap and sheet/plate 连接面处 add 6-10mm gasket.
4, pressure and amount large clamping force ultra- 载, machine deformation force large, mold opening force method large deformation force
当 machine machine machine design good rear, its generate need to clamping force machine large ratio already 经确定, can design 需锁模油缸 推 force 确定锁模油缸 直径, 此油缸 also need ensure has mold opening force, need mold opening force 就希望油缸直径越 large good, 但油缸直径太 large 导致锁模时 油缸推 force large make clamping force ultra- 载（调模不 good 时）, machine deformation force large, mold opening force method large deformation force 而导致无 method mold opening. in 此情况, usually can through made high pressure pressure and amount anti clamping force ultra- 载, 调模时 resistant 心一点, can can use relatively low pressure combined use clamping force.
5, mold opening pressure low amount small, mold opening amount small
因 mold opening pressure low, amount small mold opening amount small, method machine deformation force, especially is control system provide 第一段 mold opening amount small, mold opening amount more small, more difficult mold opening. issues can through control device PID and mold opening rate add large mold opening amount.
    6, 装模试 pressure rear rise temperature, mold opening difficult
装模试 pressure time rear, mold rise temperature 膨胀, clamping force increase large, mold opening difficult, attention/notes and adjustment modulus, make clamping force to value, mold opening fault/failure.
7, 装锁模 rear machine time long, 导致无 method mold opening
锁模 rear machine time long, machine lubricated film full 消失, machine deformation 进一步 add large, 导致无 method mold opening, therefore can
can decrease/reduce 锁模停 machine time, machine front will mold 打开, in mold lower machine.
8, mold opening back pressure, mold opening amount 不足
油路 upper in mold opening 一段设置 mold opening back pressure 也导致 mold opening amount 不足, 如发现此情况就取消 mold opening back pressure.
9, machine inner scratch retardant force large, mold opening retardant force
machine inner large and sleeve/set scratch retardant force large need more large mold opening force its scratch retardant force:
（1）钢 sleeve/set inner 油槽边缘没 has 毛刺导致毛刺 abrasion loss formed pellets large and sleeve/set combined make combined abrasion loss or 烧死配 combined 面, is 避免此 issues, requirements processing this parts rear need 修毛刺并修 light slip, 安装时 again 次检查并 will surface dry coating upper lubricated rear 安装.

 
 
（图二）
（2） if lubricated or lubricated 失败也会导致摩 scratch retardant force large, can 检查各 lubricated is positive 常, lubricated is positive 常.