Shanghai Daoqin Plastics Co., Ltd.

随 full liquid pressure injection molding machine use, has use 户反映锁模 pressure upper or pressure 保不住. 我们知道连杆 machine clamping force is 靠曲肘连杆 machine large rear 自锁, in 曲肘连杆打开 front clamping force is 不会变, full liquid pressure machine clamping force is 靠锁模油缸 inner pressure 维持, pressure fall, machine clamping force 就不够. will effect/influence pressure types can can nano lower, 供各位 outer and debugging 人员参考.

　　一, pressure upper

　　显示屏 upper pressure 输入200, 而锁模 pressure table/sheet 实际显示 has 150bar, holding pressure positive 常.

　　1, in has 安装锁模 pressure electrical appliances or pressure device machine in, to is 靠锁模 time control, can will 显示屏 upper time add long, pressure table/sheet is rise high.

　　2, system most high pressure can to 200bar, can in 显示屏 system pressure amount debugging inner pressure debugging, 若也打不 upper, 则因检查泵源 and other its it causes.

　　二, pressure 保不住

　　1, pressure pressure generally is inner 泄漏造 formed, 以CHG128 is 例, clamping sheet/plate upper liquid mono toward 阀V15 and add liquid mono toward 阀V33 inner for holding pressure has effect/influence. this 两 阀 inner amount relatively small, performance is pressure pressure relatively slow, large separation is material 卡住, for this 两阀逐一进行拆洗即 can.

　　2, inner ring active parts property can, 包括阀芯配 combined 处 密封 and active upper seals 密封, 如泄漏则 performance is pressure fast speed fall. 此处拆装 very 麻烦, generally most rear 处理.

　　3, machine in, 锁模油缸 through 插装阀 achieve outer ring, 插装阀 is 常开状态, in holding pressure as 时, 插装阀 need in control function lower 关闭, 此时, control 油 泄漏同样会 make 插装阀开启, 导致跌 pressure. control is through add liquid mono toward 阀V12 holding pressure, V12 inner and speed degree effect/influence holding pressure. performance is pressure in short inner fall 10-30bar, rear also 维持不变. 此时需 more 换V12 复位 elastic 簧, make its fast speed 关闭.

　　锁模缸跌 pressure fault/failure need from upper 述几点 analysis, 由简至 difficult, troubleshooting.