Columbia Machine, Inc.

Douglas Vernon High

Llewellyn L Johnston

Stacy L Gildersleeve

Daniel R Wahlstrom

William J Huebner

Keith Donald Brewer

Robin A Popple

A concrete products forming machine including a main frame, feed drawers, die supports and mold and head assemblies. The feed drawer is moved into position over the mold using an electric belt drive system and includes a vibrating strike off plate to improve surface quality of the molded product, zoned agitators to control movement and placement of concrete, a spring loaded seal system between the walls and floor of the feed box, and quick-release agitator design with urethane sleeves to effect easy and clean removal, replacement and cleaning of the agitators. The concrete products forming machine includes torque tube and leaf spring supports to effect substantially vertical vibrational movement of the mold with air inflatable springs for controlled force between the mold bottom and the pallet. The pallet itself is vibrated from below using phased, counter rotating shafts coupled to the pallet table on which the pallet rests. Vibration induced into the pallet by the vibrating pallet table is transferred to the mold resulting in material compaction. After the molding process, the mold is lifted in a stripping process to remove the molded product for curing or drying.

Large pallet machine for forming molded products

A frame includes a plate mounted thereon for driving movement along the frame. A captive pallet having a load thereon is staged onto the frame. The plate drives into an edge of the captive pallet thus driving the pallet from beneath the load and shifting the load to the plate. Continued plate movement transfers the load onto a shipping pallet beneath the plate. When the captive pallet includes a slip sheet, a gripping jaw holds the sheet while the plate drives the captive pallet from beneath the sheet thus providing transfer to a shipping pallet, or to the slip sheet only, in which the sides of the load are not touched.

Pallet load transfer method and apparatus

Growing community of inventors

Vancouver, WA, United States of America

Douglas Vernon High