Patent EP-2589446-A2 (EP)
Inventor: DR KARHAUSEN KAI FRIEDRICH
IPC: B22D11/06
Filed: 2012-10-29
Abstract: The roller comprises a roller core (2), a roller drum (4) surrounding the rolling core, and a cooling channel system, by which a cooling medium is conducted for cooling the roller drum, where the cooling channel system comprises: a cooling channel portion, which is provided for cooling the roller drum and comprises cooling channels; and a distribution channel portion flowing into the cooling channel portion. Each distribution channel flows toward the roller drum in a manifold chamber. The cooling channel system further comprises a back distribution channel portion. The roller comprises a roller core (2), a roller drum (4) surrounding the rolling core, and a cooling channel system, by which a cooling medium is conducted for cooling the roller drum, where the cooling channel system comprises: a cooling channel portion, which is provided for cooling the roller drum and comprises cooling channels; and a distribution channel portion flowing into the cooling channel portion. Each distribution channel flows toward the roller drum in a manifold chamber. The cooling channel system further comprises: a back distribution channel portion, which proceeds from the cooling channel portion to conduct-away the cooling medium from the cooling channel, where the cooling channels flow into a back manifold chamber, from which the back distribution channel portion proceeds; a line portion, which proceeds from a front side (16) of the roller core and runs through roller core; and a return line portion (18). An entire cross-section area of the cooling channel portion is as large as the entire cross-section area of the distribution channel portion, and optionally the entire cross-section area of the back distribution channel portion is as large as the entire cross-section area of the cooling channel portion. The distribution channel portion proceeds from the line portion. The entire cross-section area of the distribution channel portion corresponds to the entire cross-section area of the line portion. The entire cross-section area of the return line portion is as large as the entire cross-section area of a redistribution channel portion. The distribution channel portion and the redistribution channel portion partially run, in a radial direction, through the roller core. The line portion and the return line portion run along a roller axis or parallel to a roller axis. The distribution channel portion comprises distribution channels and/or the back distribution channel portion comprises back distribution channels. The distribution channel portion comprises a cross-section extension. The back distribution channel portion comprises a cross-section reduction, which is optionally provided by a chamfer. The openings of the manifold chamber in the cooling channels have equal intervals to open the respective distribution channel into the manifold chamber and/or the openings of the cooling channels in the back manifold chamber have equal intervals to open the back manifold chamber into a respective back distribution channel. The roller core and the roller drum are executed as components that are independent from each other, and the roller drum is force-, form- and/or firmly bonded on the roller core. A groove is formed into a surface of the roller core and forms the cooling channel portion together with the roller drum.