| 摘要 |
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 ).
|
