B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 47/90 (2006.01)
Patent
CA 2244740
31 The invention describes an extrusion system (1) with a shaping device (3), which has at least one calibrating device (9) comprising in particular a plurality of calibrating tools (24,31 to 33) disposed in succession in the extrusion direction, arrow (7). The calibrat- ing device (9) and/or the calibrating tools (24,31 to 33) are provided with cooling ducts (49) for passage of a heat treatment agent (50). The shaping device (3) has mould sur- faces for application against an article (6) to be passed through. Furthermore, at least between an extrusion tool (8) of the shaping device (3) and the immediately succeeding calibrating tool (24) in the extrusion direction, arrow (7) and/or between the first cali- brating tool (24) and at least one further calibrating tool (31,32,33), a seal device is dis- posed closing off the article (6) to be passed through in the region of its outer surfaces (48) from the environmental pressure, in order to form a cavity (38 to 41).
L'invention concerne une installation d'extrusion (1) équipée d'un dispositif de formage (3) présentant au moins un dispositif de calibrage (9) composé en particulier de plusieurs outils de calibrage, montés en série dans le sens d'extrusion (flèche 7). Le dispositif de calibrage (9) et/ou les outils de calibrage (24, 31 à 33) sont munis de canaux de refroidissement (49) à travers lesquels circule un frigorigène (50). Le dispositif de formage (3) présente des surfaces de formage sur lesquelles s'applique un objet (6) qui les traverse. En outre, un dispositif d'étanchéité obturant les surfaces extérieures (48) de l'objet (6) par rapport à la pression environnante en vue de former un espace creux (38 à 41), est monté au moins entre un outil d'extrusion (8) du dispositif de formage (3) et le premier outil de calibrage (24) le suivant immédiatement, dans le sens d'extrusion (7), et/ou entre le premier outil de calibrage (24) et au moins un autre outil de calibrage (31, 32, 33).
Purstinger Franz
Weiermayer Leopold
C.a. Greiner & Sohne Gesellschaft M.b.h.
Riches Mckenzie & Herbert Llp
LandOfFree
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