US2005250632A1PendingUtilityA1

Controlled deflection roll

39
Individually held — no corporate assignee on recordPriority: May 6, 2004Filed: May 4, 2005Published: Nov 10, 2005
Est. expiryMay 6, 2024(expired)· nominal 20-yr term from priority
Inventors:Rolf Haag
F16C 13/028
39
PatentIndex Score
0
Cited by
0
References
0
Claims

Abstract

A controlled deflection roll has a revolving roll shell, a yoke which passes axially through the roll shell and is fixed against rotation, and at least one source of support arranged between the yoke and the roll shell. The source of support is at least partly operated with one of an electrorheological fluid (ERF) and a ferrofluid. The viscosity of the ERF and the ferrofluid can be varied using an electric field or a magnetic field.

Claims

exact text as granted — not AI-modified
1 . A controlled deflection roll having a revolving roll shell, a yoke which passes axially through the roll shell and is fixed against rotation, and at least one source of support arranged between the yoke and the roll shell, 
 wherein    the source of support is at least partly operated with at least one of an electrorheological fluid (ERF) and a ferrofluid, of which the viscosity is variable utilizing at least one of an electric field and a magnetic field.    
   
   
       2 . The controlled deflection roll of  claim 1 , wherein the hydraulic pressure can be varied via the field that influences the viscosity of the electrorheological fluid (ERF) or ferrofluid.  
   
   
       3 . The controlled deflection roll of  claim 2 , further comprising a pressure regulator.  
   
   
       4 . The controlled deflection roll of  claim 1 , wherein volume flow can be varied via the field that influences the viscosity of the electrorheological fluid (ERF) or ferrofluid.  
   
   
       5 . The controlled deflection roll of  claim 4 , further comprising a volume flow regulator.  
   
   
       6 . The controlled deflection roll of  claim 1 , wherein damping characteristics of the source of support can be varied via the field that influences the viscosity of the electrorheological fluid (ERF) or ferrofluid.  
   
   
       7 . The controlled deflection roll of  claim 1 , wherein oscillatory characteristics of the roll shell can be varied via the field that influences the viscosity of the electrorheological fluid (ERF) or ferrofluid and corresponding changes in a pressure chamber of the source of support.  
   
   
       8 . The controlled deflection roll of  claim 1 , wherein the source of support is operated with the electrorheological fluid (ERF) or ferrofluid.  
   
   
       9 . The controlled deflection roll of  claim 1 , wherein a plurality of sources of support are supplied with the electrorheological fluid (ERF) or ferrofluid via a common supply line, in which system pressure is maintained.  
   
   
       10 . The controlled deflection roll of  claim 9 , further comprising a plurality of pressure chambers associated with each respective source of support, and further comprising a connecting line between the pressure chamber of each respective source of support and the common supply line, in which there is integrated a throttling point in which an electric conductor is arranged in order to produce the field.  
   
   
       11 . The controlled deflection roll of  claim 1 , further comprising a pressure sensor connected directly to a pressure chamber of the source of support.  
   
   
       12 . The controlled defection roll of  claim 1 , further comprising an electric controller for pressure regulation, the controller arranged outside the roll.  
   
   
       13 . The controlled deflection roll of  claim 1 , wherein the source of support is operated in a two-circuit system, in which the electrorheological fluid (ERF) or ferrofluid is used only for the pressure regulation and the lubrication of the source of support is carried out with conventional oil.  
   
   
       14 . The controlled deflection roll of  claim 13 , wherein oil pockets of the source of support are supplied with a constant volume flow.  
   
   
       15 . The controlled deflection roll of  claim 13 , wherein the electrorheological fluid (ERF) or ferrofluid for the regulation of the pressure in a pressure chamber of the source of support flows in a separate circuit.  
   
   
       16 . The controlled deflection roll of  claim 13 , wherein in each case a connecting line, in which a throttling point is integrated in order to maintain the pressure in a pressure chamber, is provided between the pressure chamber of a respective source of support and a tank of the ERF or ferrofluid supply.  
   
   
       17 . The controlled deflection roll of  claim 16 , wherein the throttling point comprises one of an aperture stop and a capillary.  
   
   
       18 . The controlled deflection roll of  claim 17 , wherein the throttling point comprises an electric conductor.  
   
   
       19 . The controlled deflection roll of  claim 1 , wherein viscous damping of the source of support, which is moved relative to the yoke, can be varied via change in viscosity of the electrorheological fluid (ERF) or ferrofluid between a guide bush of the source of support and the yoke.  
   
   
       20 . The controlled deflection roll of  claim 1 , further comprising a damper supported at a first end on of a head of the source of support and at a second end on the yoke, the damper containing electrorheological fluid (ERF) or ferrofluid, the viscosity of which can be influenced by an appropriate field, at least one of the damping characteristics of the head of the source of support, which can be moved relative to the yoke and the oscillatory properties of the roll shell can be varied.  
   
   
       21 . The controlled deflection roll of  claim 20 , wherein the damper further comprises a cylinder containing the electrorheological fluid (ERF) or ferrofluid and a piston arranged in the cylinder, the piston having an external cross section smaller than an internal cross section of the cylinder, so that in operation fluid displaced by the piston can pass through a radial region between the piston and an inner side of the cylinder.  
   
   
       22 . The controlled deflection roll of  claim 21 , wherein the respective field that influences the viscosity of the electrorheological fluid (ERF) is produced in the radial region between the piston and the inner side of the cylinder.  
   
   
       23 . The controlled deflection roll of  claim 1 , further comprising a damper supported on a head of the source of support and on the yoke at a first end via a cylinder and at a second end via a piston rod extending from the outside from the interior of the cylinder or extending to the outside from the interior of the cylinder.  
   
   
       24 . The controlled deflection roll of  claim 1  further comprising a damper supported on a head of the source of support and on the yoke via a spherical joint.  
   
   
       25 . The controlled deflection roll of  claim 1 , further comprising a damper substantially arranged within a pressure chamber of the source of support.  
   
   
       26 . The controlled deflection roll of  claim 1 , wherein the source of support is a ring element.  
   
   
       27 . The controlled deflection roll of  claim 26 , wherein an internal space enclosed by the ring element is connected to a discharge line in which a throttling point is integrated, which can be adjusted variably by the viscosity of an electrorheological fluid (ERF) or ferrofluid flowing through this throttling point being variable via the electric or magnetic field.  
   
   
       28 . The controlled deflection roll of  claim 27 , wherein the throttling point comprises an electric conductor which is arranged in a discharge line and via which the electric or magnetic field can be produced.  
   
   
       29 . The controlled deflection roll of  claim 1 , wherein the support has at least one annular pocket in a supporting face that faces an inner surface of the shell and, facing the yoke, an annular pressure face that bounds a pressure chamber that is connected firstly to a pressure medium feed line and secondly via a throttle to a pocket.  
   
   
       30 . The controlled deflection roll of  claim 29 , wherein a throttling point is integrated in the pressure medium feed line and can be adjusted variably by the viscosity of an electrorheological fluid (ERF) or ferrofluid flowing through this throttling point and being variable via the electric or magnetic field.  
   
   
       31 . The controlled deflection roll of  claim 30 , wherein the throttling point comprises an electric conductor that is arranged in the pressure medium feed line and via which the electric or magnetic field can be produced.  
   
   
       32 . The controlled deflection roll of  claim 1 , further comprising an annular pocket subdivided by transverse webs into a plurality of pocket sections, and wherein each pocket section is connected to the pressure chamber via a throttle.  
   
   
       33 . The controlled deflection roll of  claim 1 , further comprising a pressure sensor connected directly to a pressure chamber of the source of support.  
   
   
       34 . The controlled deflection roll of  claim 1 , further comprising a pressure sensor connected directly to an internal space.

Join the waitlist — get patent alerts

Track US2005250632A1 — get alerts on status changes and closely related new filings.

We store only your email — no account needed. See our privacy policy.