B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 45/73 (2006.01) B29C 49/06 (2006.01) B29C 49/64 (2006.01) B29C 35/16 (2006.01)
Patent
CA 2496561
Disclosed is an extrusion mandrel fastener (2) that is embodied as a two-piece unit comprising a supporting beam (4) and a holding beam (5) which can be joined together and are provided with semi-cylindrical recesses (7, 8) complementing each other so as to form cylindrical recesses (9). An extrusion mandrel (3) is inserted into each cylindrical recess (9) and is retained therein. The extrusion mandrel fastener (2) and the extrusion mandrels (3) are provided with ducts (13, 14, 15, 16, 24, 25) which allow fluid circulation so as to temper the extrusion mandrels (3) and communicate with each other as well as with openings (11, 26) that are disposed on the extrusion mandrel fastener (2) via cylindrical connecting sleeves (30). Said connecting sleeves (30) are preferably sealed by means of sealing rings and fix the extrusion mandrel (3) to the extrusion mandrel fastener (2). Preferably, the holding beam (4) is configured as a two-piece element comprising an extrusion mandrel connection beam (17) and a fluid connection beam (18) which can be joined together and are provided with ducts (13, 14, 15, 24, 25). Said ducts (13, 14, 15, 24, 25) communicate with each other so as to allow fluid circulation between the openings (11, 26) and through the extrusion mandrels (3) or the ducts (16) that are disposed therein. Preferably, the fluid connection beam (18) is embodied as a two-piece member comprising a body (19) and a lid (20) which can be joined together, the ducts (24, 25) being configured as grooves that are mounted on the body (19) of the fluid connection beam (18) and are covered by the lid (20).
L'invention concerne un porte-mandrin (2) en deux parties, comprenant une tige support (4) et une tige de maintien (5) jointes ensemble et pourvues d'évidements (7, 8) demi-cylindriques qui se complètent pour former des évidements cylindriques (9), dans lesquels est respectivement placé et fixé un mandrin (3). Pour permettre la circulation fluidique destinée à tempérer les mandrins (3), le porte-mandrin (2) et les mandrins (3) comportent des canaux (13, 14, 15, 16, 24, 25) qui communiquent entre eux, au moyen de raccords (30) en forme de douilles cylindriques fermées de préférence par des bagues d'étanchéité, et avec des orifices (11, 26) disposés sur le porte-mandrin (2), les raccords (30) fixant les mandrins (3) sur le porte-mandrin (2). La tige de maintien (4) est de préférence composée de deux parties, une tige raccord de mandrin (17) et une tige raccord de fluide (18), qui sont jointes ensemble et dotées de canaux (13, 14, 15, 24, 25) communiquant entre eux pour permettre la circulation fluidique entre les orifices (11, 26), au travers des mandrins (3) et dans les canaux (16) situés dans les mandrins. La tige raccord de fluide (18) est de préférence aussi en deux parties, avec un corps (19) et un couvercle (20) joints ensemble, les canaux (24, 25) étant des rainures recouvertes par le couvercle (20) et disposées sur le corps (19) de la tige raccord de fluide (18).
Polymold Ag
Riches Mckenzie & Herbert Llp
LandOfFree
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