System for vacuum-refeeding sheets, in particular corrugated boa

Cutting – With product handling means – Means to move – guide – or permit free fall or flight of product

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Details

271198, B26B 508

Patent

active

058573941

ABSTRACT:
A sheet-refeeding system for vacuum-refeeding sheets in printing and die cutting machines includes a supporting structure and a plurality of boxes containing fans, located on the supporting structure above a sheet-conveying line. The system further has sheet-dragging knurled rollers positioned in slits formed in a conveying plate which in turn has rows of small holes to let air pass therethrough. The system has a central conveying line and at least two side lines. Each line has a plurality of idle guide rollers. Longitudinal sheet-guiding plates are installed between the sides of the idle rollers. Toothed belts are positioned between the lines of idle guide rollers. The belts have on their external surfaces small sheet-dragging blocks, which are installed with such pitch and such speed as to adjust a phase of the sheets moving on the belts to the location of a die cutting cylinder installed downstream of the sheet-refeeding system without interference with the rear sides of the sheets.

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Martin S.A. (a European Corporation in the field), "Complete High Productivity Line For The Die-Cutting of Corrugated Board Boxes". All pages are relevant. The exact date and place of publication is unknown. However, the publication was available before Feb. 23, 1994.

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