CUSHIONING CONVERSION MACHINE AND METHOD WITH STITCHING ASSEMBLIES

• Main Author: LENCOSKI, MICHAEL, J
• Format: Patent
• Language: English; French
• Published: 28.09.2000
• Edition: 7
• Subjects: MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNERANALOGOUS TO PAPER; MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN AMANNER ANALOGOUS TO PAPER, NOT PROVIDED FOR IN SUBCLASSESB31B OR B31C; PERFORMING OPERATIONS; TRANSPORTING; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUSTO PAPER

Cushioning conversion stitching/coining members each include a plurality of radially outwardly extending projections (234) that meshingly engage during rotation. One stitching member includes a recess and the other stitching member includes cutting edges (237) received in the recess to cut a row of slits in the overlapped portions of the stock material to form at least one row of tabs for interlocking the overlapped portions of the stock material. The cutting edges are radially positioned between adjacent projections of the second stitching member and circumferentially spans less than the circumferential space between adjacent projections. Additionally or alternatively, the projections are shaped so that there is exaggerated backlash between meshing projections. Selon cette invention, des éléments de transformation de rembourrage à brochage / matriçage comprennent chacun plusieurs protubérances faisant saillie vers l'extérieur qui s'engrènent pendant la rotation. Un élément de brochage comprend un enfoncement et l'autre élément de brochage comprend des bords tranchants qui rentrent dans l'enfoncement de manière à découper une ligne de fentes dans les parties chevauchantes du matériau et à former au moins une ligne de languettes destinées à interverrouiller lesdites parties chevauchantes du matériau. Les bords tranchants sont placés radialement entre les protubérances adjacentes du deuxième élément de brochage et s'étendent en cercle sur une surface moindre que l'espace circulaire entre protubérances adjacentes. En complément ou en variante, la forme des protubérances est choisie de manière à ce qu'il y ait un jeu excessif entre les protubérances qui s'engrènent.