Patent ID: 6592719
Filing Date: 2003-07-15
Classification: D21F

Abstract:
A shoe press for a papermaking machine comprising a backing roll and a shoe with a concave surface urged against the backing roll to provide extended nip, and a blanket extending as a closed loop through the nip, and moving relative to the shoe in the machine direction, the blanket having first and second ends secure to first and second heads, which are rotatably mounted to a press frame such that both heads are permanently floating, and respective fluid actuated piston and cylinder assemblies mounted inside the blanket and operative to apply axial pressure to the first and second heads, thereby to tension the blanket, in that the respective fluid assemblies include respective displacement sensors whereby the positions of the heads, and thereby of the blanket, relative to the press can be determined and monitored, and in that means are provided whereby automatic adjustments are then made to the positions of the heads to maintain the blanket in a substantially central position on the press.