DEVICE FOR MANUFACTURE OF SINGLE-USE MOLDS Russian patent published in 1995 - IPC

FIELD: foundry. SUBSTANCE: device has lateral, top and bottom plates. The top plate is connected, via slit and funnel, to a sandblast machine. The above device also has a pressure plate and a counter-pressure plate with pattern plates installed for horizontal movement. The above lateral, top, pressure and counter-pressure plates are provided with vents and air chambers. All the vents mentioned communicate with the atmosphere through their common air chamber. The rest of the vents on the lateral plates communicate with the source of compressed air through their own air chambers. EFFECT: higher efficiency and reliability. 3 dwg