Method for making a mechanical screen cylinder

B - Operations – Transporting – 07 – B

Patent

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Details

B07B 1/46 (2006.01) B07B 1/18 (2006.01)

Patent

CA 2408391

The invention concerns a method for making a substantially mechanical screen cylinder (P) with centripetal or centrifugal flow relative to an axis (R), comprising rings (A) arranged in planes perpendicular to the axis of revolution and wires parallel (F) to the axis of revolution rigidly linked to the rings, uniformly spaced, to screen a product. The invention is characterised in that the assembling of a wire (F) on a ring (A) comprises a first operation which consists in positioning of said wire (F) in a corresponding notch (EN) of the ring and a second operation wherein the wire is welded on the ring by melting a shoulder (EP1) of the ring without external metal input. Said method enables to produce a screen cylinder having improved mechanical properties increasing its life span, and at reduced cost, as compared to standard mechanical baskets.

Le procédé de fabrication d'un panier mécanique (P) de forme sensiblement cylindrique à débit centripète ou centrifuge par rapport à un axe (R), comprenant des anneaux (A) disposés dans des plans perpendiculaires à l'axe de révolution et des fils parallèles (F) à l'axe de révolution rigidement liès aux anneaux, régulièrement espacés, pour tamiser un produit est caractérisé en ce que l'assemblage d'un fil (F) sur un anneau (A) comprend une première opération de mise en position dudit fil (F) dans une encoche (EN) correspondante de l'anneau et une seconde opération dans laquelle le fil est soudé sur l'anneau par fusion d'un épaulement (EP1) de l'anneau, sans métal d'apport extérieur. Selon ce procédé, on réalise un panier mécanique présentant de meilleures caractéristiques mécaniques pour que sa durée de vie soit augmentée, et ayant un coût de fabrication réduit, comparé aux paniers mécaniques classiques.

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