Hydraulic mould mechanism - using high and low pressure systems of eg 100-250 and 4-10 atmos for plastics, elastomers or metals

摘要

The piston rods make up the piston systems, with pressure ring seals which on high pressure expand fully to form a complete seal, and which on low pressure barely touch the cylinder walls. The purpose is to provide a low pressure operating system which prevents mould damage should some material be left on the closing surfaces, and which prevents operator injury in the closing motions.