Apparatus for punching holes in elongate sections

B - Operations – Transporting – 21 – D

Patent

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Details

B21D 28/28 (2006.01)

Patent

CA 2214333

Apparatus for punching holes in elongate sections (2) comprises an elongate arbor (4) over which is located the section (2) to be punched, a die head (6) at or adjacent the end of the arbor (4) and within the hollow section (2), and at least one punch (26) for co-operative alignment with the die head (6). Guide means, preferably in the form of rollers (14 to 20) positioned above and below and to each side of the section (2) are provided to locate the section (2) relative to the arbor (4) and die head (6), the guide means (14 to 20) being so arranged as to permit selective axial and rotational movement of the section (2) relative to the or each punch (26) and die head (6) whereby holes can be punched in substantially any region of the section (2).

Cette invention concerne un appareil à poinçonner des sections allongées (2) qui comporte un mandrin allongé (4) sur lequel on place la section (2) à poinçonner, une tête de contre-forme (6) située à l'extrémité du mandrin, ou à proximité de celui-ci et à l'intérieur de la section creuse (2), et au moins un poinçon (26) aligné avec la tête de contre-forme (6) de façon à coopérer avec elle. On dispose d'éléments de guidage, ayant de préférence la forme de roulettes (14 à 20), placés au-dessus, au-dessous et de part et d'autre de la section (2), pour positionner la section (2) par rapport au mandrin (4) et à la tête de contre-forme (6), ces éléments de guidage (14 à 20) étant placés de façon à permettre, selon le cas, le déplacement axial et la rotation de la section (2) par rapport au (ou à chaque) poinçon (26) et à la tête de contre-forme (6) ce qui permet le poinçonnage de pratiquement n'importe quelle région de la section (2).

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