Strapping tool with improved punches

B - Operations – Transporting – 21 – F

Patent

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Details

B21F 17/00 (2006.01) B21D 39/03 (2006.01) B65B 13/30 (2006.01)

Patent

CA 2219187

An improvement in a punch design for a punch used within a strapping tool which creates seal-less connections between overlapping steel strap segments that are to be bound together. The punch is relieved along the edge surfaces that experience extreme forces during the stamping operation which physically binds the strap segments together. The relieved edges also provide a less acute angle for the stamped edge surfaces to scrape against once the tension on the straps is released.

L'invention porte sur une amélioration dans la configuration d'un poinçon d'une cercleuse créant un sertissage sans cachet entre les segments de feuillards d'acier qui se chevauchent et qui doivent être liés ensemble. Le poinçon est dépouillé le long des surfaces périphériques subissant des forces extrêmes durant le poinçonnage qui permet de lier physiquement ensemble les segments de feuillards. Les bords dépouillés offrent également un angle moins aigu, empêchant ainsi les surfaces périphériques poinçonnées de les effleurer une fois que la tension imposée aux feuillards est relâchée.

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