Roll for pressure treatment of material bands

Details Roll for pressure treatment of material bands Roll for pressure treatment of material bands

D - Textiles, Paper

21

G

D21G 1/02 (2006.01) F16C 13/00 (2006.01)

Patent

CA 2521521

The invention relates to a roll for pressure treatment of material bands comprising a carrier (3), a roll sleeve (4) arranged on said carrier (3), and at least one pressure chamber (12) which is disposed between the carrier (3) and the roll sleeve (4), is at least partially filled with liquid and can transmit at least indirectly a hydraulic pressure force from carrier (3) to the roll sleeve (4). According to said invention, the pressure chamber(s) is provided with an elastic element (18') which unrestrictedly communicates with supporting liquid and is compressible when a liquid pressure required for producing a supporting hydraulic force is exceeded.

L'invention concerne un cylindre destiné au traitement de compression de bandes de matériau, comportant un support (3), une chemise de cylindre (4) logée dans le support (3), et au moins une chambre de compression (12) logée entre le support (3) et la chemise de cylindre (4), au moins partiellement remplie d'un liquide, pouvant transmettre au moins indirectement une force d'appui hydraulique, du support (3) vers la chemise de cylindre (4). Selon l'invention, la ou les chambres de compression (12) comportent un élément élastique (18') se trouvant en communication non restreinte avec le liquide d'appui, et pouvant être comprimé en cas de dépassement de la pression de liquide nécessaire à la production de la force d'appui hydraulique.

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