B - Operations – Transporting – 23 – B
Patent
B - Operations, Transporting
23
B
B23B 35/00 (2006.01) D21F 5/02 (2006.01) D21F 5/14 (2006.01)
Patent
CA 2315093
The invention relates to a method of drilling holes to the surface of a dryer cylinder (1) in a paper machine, whereby the drilling operation is performed onsite without dismantling the cylinder from the paper machine. Such a dryer cylinder comprising a shell (2), a cavity (3) enclosed by the shell and grooves (5) made to the outer surface (4) of the shell. The main goal of the method according to the invention is to open and/or widen the drilled holes (7) already made on the dryer cylinder of a paper machine, thus improving the performance of the cylinder. The method according to the invention may also be employed for making an entirely new drilling pattern (7, 7') on the dryer cylinder.
L'invention concerne un procédé de perçage d'orifices à la surface d'un cylindre sécheur (1) dans une machine à papier. L'opération de perçage est réalisée sur place, sans devoir démonter le cylindre de la machine à papier. Le cylindre en question comporte une enveloppe (2), un cavité (3) entourée par l'enveloppe et des sillons (5) ménagés à la surface extérieure (4) de l'enveloppe. Le principal objectif du procédé de la présente invention est d'ouvrir et/ou d'élargir les orifices percés (7) déjà pratiqués dans le cylindre sécheur d'une machine à papier, de façon à améliorer les performances du cylindre. Le procédé de l'invention peut également servir à réaliser sur le cylindre sécheur un motif (7, 7') de perçage entièrement nouveau.
Pikoteknik Oy
Robic
LandOfFree
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