| 摘要 |
A brick press includes a fixed lower frame and an upper movable frame. The upper movable frame has thereon an upper movable piston. Mounted on the lower fixed frame are parallel rails. A transfer table has mounted thereon a mold and is movable horizontally along the rails into and out of alignment with the upper movable piston. A lower piston is carried with the transfer table in alignment with the mold. First movable chamber forming means are mounted coaxial with the upper piston and adapted to seal against the top of the mold when the mold is aligned with the upper piston to create a sealed chamber, the pressure of which may be selectively reduced. Mounted beneath the transfer table and coaxial with the lower piston is a second chamber forming means which may be selectively engaged with the top of the lower fixed frame to form a second chamber, the pressure of which may be selectively reduced. When the mold is filled with brick material, the transfer table, mold and lower piston are moved into alignment with the upper piston. The upper and lower chamber forming means are then actuated to isolate the brick material. The pressure within these chambers and within the brick material is then reduced, and the upper piston is actuated to press the brick material against the lower piston. After the pressing operation, the upper piston is raised, the two chamber forming means are retracted, and the transfer table and mold are again moved along the rails out of alignment with the upper piston. Then the finished brick may be removed from the mold, and new brick material may be added thereto.
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