Trim press with oscillating canopy sheet feed

Details Trim press with oscillating canopy sheet feed Trim press with oscillating canopy sheet feed

1980-05-02

1981-12-22

Yost, Frank T.

Cutting

Processes

Plural cutting steps

83251, 83276, 83278, 83280, B26F 140, B65H 1736, B65H 1740

Patent

active

043064744

ABSTRACT:
An oscillating canopy is employed in the feeding of an elongate sheet of synthetic plastic material having articles, such as cups, for example, formed in the sheet, to a die which trims the articles from the sheet. The canopy has a downwardly concave curved upper portion upon which the sheet is supported by a series of rollers. The canopy is driven in forward and return strokes in pivotal movement about an axis located at a radial distance from the curved upper portion which is a greater distance from the discharge end of the curved upper portion than from the sheet receiving end so that tension is maintained on the sheet during the feeding stroke. The sheet-supporting rollers are mounted for rotation in one direction only, this direction being that in which the rollers can roll relative to the sheet on the return stroke of the canopy.

REFERENCES:
patent: 3388625 (1968-06-01), O'Brien et al.
patent: 3461760 (1969-08-01), White
patent: 4005626 (1977-02-01), Bateman et al.
patent: 4173161 (1979-11-01), Arends et al.

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