Leesona Corporation

John Brown Inc.

Leesona Corporaton

William F Kent

George L Pickard

George A West

Wilbur P Winton

Gaylord W Brown

James H Kundinger

Apparatus and method for severing and stacking articles which have been differentially pressure formed in a sheet of thermoplastic material from the sheet. Apparatus is provided for moving the sheet in a horizontal path and relatively vertically moving opposed upper and lower trim dies into engagement with vertically opposite sides of the sheet to trim the articles from the sheet at a trim station. The articles free fall through an opening in the lower die and free fall to an underlying accumulator. The accumulator includes mechanism which is moveable from a stack forming position in the path of freely falling articles to receive and accumulate freely falling severed articles in a stack, and a releasing position in which a formed the stack is released for vertical free fall. Mechanism is provided for accumulating additional severed articles at a higher predetermined vertical level until the released stack vertically clears the stacking station and then releasing the partial stack for free-fall to the stacking station at which another stack is completed.

Vertical trim press and stacking apparatus and method of trimming and

A method and apparatus for lining the interior of a container with plastic sheet material. An open topped container is elevated upon a support through a passage in a lower die member into contact with the under surface of a sheet of heated thermoplastic material overlying the upper end of the passage. A plug assist member is then employed to deform the sheet into conformation with the interior of the container. Upon withdrawal of the plug assist member, an upper die member is lowered into shearing relationship with the lower die member to shear the sheet around the upper periphery of the container. The support, with the lined container in place, is then further elevated to raise the lined container upwardly through the opening thus sheared in the sheet and through a passage extending vertically through the upper die member. The plastic lined container is discharged from the apparatus by pushing it transversely across the flat upper surface of the upper die member.

Container lining

A method for lining the interior of a container with plastic sheet material. An open topped container is elevated upon a support through a passage in a lower die member into contact with the under surface of a sheet of heated thermoplastic material overlying the upper end of the passage. A plug assist member is then employed to deform the sheet into conformation with the interior of the container. Upon withdrawal of the plug assist member, an upper die member is lowered into shearing relationship with the lower die member to shear the sheet around the upper periphery of the container. The support, with the lined container in place, is then further elevated to raise the lined container upwardly through the opening thus sheared in the sheet and through a passage extending vertically through the upper die member. The plastic lined container is discharged from the apparatus by pushing it transversely across the flat upper surface of the upper die member.

Container lining method

Growing community of inventors

Beaverton, MI, United States of America

William F Kent