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US 5,179,894 AGranted
Calender with positionable rollers
AssigneeSulzer-Escher Wyss GmbH
InventorsJoachim Hinz, Josef Schneid, Andreas Steidele, Karl Volz, Wolf-Gunter Stotz
Life of this patent
Estimating the term…
Abstract
In a calender (1) one or several rollers (2) can be positioned by being raised or lowered jointly with the roller stack disposed therebelow; and vertically displaceable sliding members (3) connected with the roller journals are jointly driven, and are blocked when the roller to be positioned (2) is adjacent the desired working position by way of a separate fixation device (6) supported on the frame (4). In a development of the method the rollers are brought in a desired working position after blocking of the fixation device.
Claims20
Calender comprising:
- a support (4);
- an uppermost roller;
- a lowermost roller;
- intermediate rollers disposed between said uppermost roller and said lowermost roller;
- means (7) for achieving a raising or lowering displacement of said lowermost roller;
- respective bearings for said intermediate rollers, said bearings being supported on sliding members (3) and said sliding members being vertically movable with respect to said support (4);
- a plurality of levers (5), each of said levers having a first end and a second end, said first end pivotally connected to a respective one of said sliding members about a respective pivot axis and said second end connected to an associated end of one of said intermediate rollers;
- and
- fixation devices (6) for fixing said sliding members relative to said support, wherein each of said fixation devices (6) is formed as a respective piston and cylinder unit comprising a piston and a cylinder, said unit having a first end secured to said support (4) and a second end secured to the respective sliding member (3), wherein a pressurized fluid supply is provided for said piston and cylinder units, there being means for controlling the admission of pressurized fluid to and the discharge of pressurized fluid from said piston and cylinder units and for selectively blocking the displacement of the piston within the cylinder of said unit.
6 more elements
Calender comprising:
- a support;
- an uppermost roller and a lowermost roller;
- an intermediate roller between the uppermost roller and the lowermost roller;
- a sliding member (3) pivotally connected about a pivot axis to a first end of a lever having first and second ends, said second end of said lever connected to an associated end of said intermediate roller, said sliding member being vertically movable with respect to said support (4) and having a fixation means (6) for coupling the sliding member to the support and being capable of fixing said sliding member to the support (4) to thereby determine a respective position of the intermediate roller, the intermediate roller having bearings supported on the sliding member (3), wherein the calender comprises a motor (7) for achieving the raising or lowering displacement of said lowermost roller, said motor (7) being hydraulically actuated to open the calender, said fixation means (6) having a blocking unit capable of generating a blocking force (11), the fixation means (6) being blocked by said blocking force.
1 more element
Calender comprising:
- a support (4);
- an uppermost roller;
- a lowermost roller;
- intermediate rollers disposed between said uppermost roller and said lowermost roller;
- means (7) for achieving a raising or lowering displacement of said lowermost roller;
- respective bearings for said intermediate rollers, said bearings being supported on sliding members (3) and said sliding members being vertically movable with respect to said support (4);
- and
- fixation devices (6) for fixing said sliding members relative to said support, wherein each of said fixation devices (6) is formed as a respective piston and cylinder unit comprising a piston and a cylinder, said unit having a first end secured to said support (4) and a second end secured to the respective sliding member (3), wherein a pressurized fluid supply is provided for said piston and cylinder units, there being means for controlling the admission of pressurized fluid to and the discharge of pressurized fluid from said piston and cylinder units, said units further including a respective blocking unit (11) for generating a blocking force to selectively block the displacement of said piston, said blocking unit comprising a clamping seat, a spring system biasing said clamping seat, and means for generating a pressure force from a pressurized fluid introduced to the respective blocking unit in the vicinity of said spring system to release said spring system and cancel said blocking force.
5 more elements
Calender comprising:
- a support;
- an uppermost roller and a lowermost roller;
- an intermediate roller between the uppermost roller and the lowermost roller;
- a sliding member (3) connected to said intermediate roller and vertically movable with respect to said support (4), said sliding member (3) having a fixation means (6) for coupling the sliding member to the support, said fixation means being capable of fixing said sliding member to the support (4) to thereby determine a respective position of the intermediate roller, the intermediate roller having bearings supported on the sliding member (3), wherein the calender comprises a motor (7) for achieving the raising or lowering displacement of said lowermost roller, said motor (7) being hydraulically actuated to open the calender;
- and
- a blocking unit (11) connected to said fixation means, said blocking unit generating a blocking force to prevent movement of said fixation means, said blocking unit comprising a spring system biasing a clamping seat and including means for generating a pressure force from a pressurized fluid introduced to the blocking unit in a vicinity of the spring system to release said spring system to cancel said blocking force.
3 more elements
Dependencies are inferred from the claim text.