Method and device for the fabrication of perforated blocks
AssigneeMetten Produktions-und Handels-GmbH
InventorJosef Metten
Life of this patent
Estimating the term…
Abstract
Device for the fabrication of concrete blocks having thin through holes for the drainage of water (perforated blocks), the fabrication taking place in at least one mold filled with concrete, which mold is supported on a mold table, and at least one male die for the compaction of the concrete. In order to create the thin holes, core pins are arranged in the region of the male dies or of the mold table or of the mold, which core pins are introduced inside the mold before the compaction of the concrete. Afterward, the concrete is compacted, the core pins are removed from the region of the mold, the compacted concrete blocks are completely demolded, and the concrete blocks are cured.
Claims7
A device for fabrication of perforated concrete blocks, comprising:
- a mold table (1) having vertically extending holes therethrough;
- a mold (3) supported on top of said mold table (1) for receiving poured concrete to form a concrete block having top, bottom and side surfaces, said mold (3) having top and bottom openings and being elevatable from said mold table (1);
- strips (12) on said mold table (1) having openings aligned with said holes in said mold table (1), said strips being positioned within said mold;
- a vertically movable male die (4) aligned with said top opening and operable to compact concrete poured into said mold (3) upon its being moved downwardly into said top opening to a compacting position in which it is in downward thrust transmitting engagement with said concrete in said mold and
- a purality of core pins (6) movable between a retracted position and an inserted position in which said core pins (6) extend through said concrete in said mold (3) and through said openings in said strips (12) to thereby form a plurality of narrow perforations extending between said top and bottom surfaces of said concrete block being formed in said mold (3).
A device for fabricating perforated concrete blocks, comprising:
- a mold table (1),
- a mold (3) supported on said mold table (1) for receiving poured concrete to form a concrete block having top, bottom and side surfaces, said mold having top and bottom openings and being elevatable from said mold table to a retracted position to permit removal of said block from said table,
- a vertically movable male die (4) aligned with and movable from a retracted position downwardly into said top opening of said mold (3) to a compacting position in which it is in downward thrust transmitting engagement with said concrete in said mold, said male die (4) having a plurality of openings extending vertically therethrough, said mold (3) being movable to its retracted position with said male die (4) remaining in its compacting position,
- a component (10) disposed above and vertically movable relative to said male die, said component (10) having a plurality of vertically extending core pins (6) in registration with said openings in said male die (4), said component (10) being movable, when said male die (4) is in its compacting position, between a retracted position, in which said core pins are retracted from said openings in said male die, and an inserted position in which said core pins extend through said openings in said male die and through said concrete block being formed in said mold to thereby form a plurality of narrow perforations extending between said top and bottom surfaces of said block being formed in said mold and
- vertically confronting abutment surfaces formed on said component (10) and said mold (3), whereby with said male die remaining in its compacting position, said abutment surfaces engaging to cause said component to be raised to its retracted position when said mold is elevated to its retracted position.
Dependencies are inferred from the claim text.