Infeed apparatus for a sheet material article trimmer

Details Infeed apparatus for a sheet material article trimmer Infeed apparatus for a sheet material article trimmer

2007-05-08

2007-05-08

Prone, Jason (Department: 3724)

Cutting

Tool engages work during dwell of intermittent workfeed

Intermittent drive type of gearing for work-feed means

C083S276000, C083S280000

Reexamination Certificate

active

10001769

ABSTRACT:
An infeed apparatus for a sheet material article trimmer includes a pusher element for moving a sheet material article to be trimmed on a front table of the trimmer and into engagement with a backstop of the front table. The pusher element is moved by a driver which moves the pusher element at the same speed as the front table for a period of time with the pusher element in engagement with a back edge portion of the sheet material article and the backstop in engagement with a front edge portion of the sheet material article. The period of time is at least as long as the time required for the front clamp to move through a distance corresponding to the difference in thickness between the thinnest sheet material article and the thickest sheet material article to grip the sheet material article against the front table.

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