| 摘要 |
Reaction injection molding presses often are very large and require high pressures and special clamping means to prevent leakage from the mold. The press of the invention has fixed platen (11) and movable platen (12) for clamping a composite mold (12/22) therebetween at a closed mold position, plural high pressure hydraulic cylinders (17), mounted on carrier (13) for movable platen (21) and locking mechanism (29) having plural spaced locking positions along locking rods (24) is effective to lock carrier (13) selectively at such positions. A pair of low power hydraulic piston-cylinder assemblies (16) connected with carrier (13) adjacent its opposite ends move the carrier (13) and movable platen (21) to a closed position. Short stroke connecting rods (19) operated by high pressure cylinders (17) are independently movable into engagement with movable platen (21) at plural locations within the area of the composite mold (12/22). |
