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贵州省国营安吉铸造厂,于1989年购入一台苏州铸造机械厂生产的 Z8025射芯机,用于吹制芯盒型腔复杂的砂芯。经两年多的使用,认为该机在应用壳芯砂制芯时尚有值得改进的地方,影响其正常工作。(1)工作平台上升时射砂口排砂工作平台由一φ350mm 气缸带动,其进气管φ19.05mm。控制射砂的薄膜阀进气管φ5mm,且直连于主管道上。当平台上升时,系统管道压力出现波动,如射砂压力整定值较高(0.35～0.4MPa),则气包内气体顶开薄膜阀而进入射砂
In Guizhou Province, the state-owned Anji Foundry purchased a Z8025 core shooting machine from Suzhou Foundry Machinery Factory in 1989 to blow the complicated core of the core box cavity. After more than two years of use, that the machine shell core sand core fashion is worth the improvement, affecting its normal work. (1) When the working platform goes up, the sand discharging port sand working platform is driven by a φ350mm cylinder with the inlet pipe φ19.05mm. Control the injection of sand film valve inlet φ5mm, and directly connected to the main pipeline. When the platform rises, the pressure in the system pipe fluctuates. If the shooting sand pressure setting value is higher (0.35 ~ 0.4MPa), the air in the air bag will open the membrane valve and enter the shooting sand