Abstract A prepress for a fiberboard plant has a plurality of upper rollers spaced above a plurality of lower rollers. The lower rollers are fixed in a rigid support frame and the upper rollers are fixed by pairs in respective upper support frames each comprising a pair of longitudinal beams embracing two rollers and a pair of transverse beams bridging the longitudinal beams and each adjacent one of the rollers. Each upper roller is journaled at one end in one of the longitudinal beams in a self-aligning bearing permitting transverse displacement of the roller relative to that longitudinal beam and at its other end in a conventional self-aligning bearing. Each transverse beam has one end fixed to one of the longitudinal beams and another end secured by means of a ball joint to the other longitudinal beam. A plurality of hydraulic cylinders each have one end secured to the support of the lower rollers and another end secured to an insert fitted within the end of a transverse beam. In this manner it is possible for the rollers at opposite ends of the frame to be tilted in opposite directions and the distortion so produced does not damage the frames due to the provision of the various selfaligning bearings and ball joints.
Inventors
👤 Wolfgang Reiners
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-10-25 15:43
CPC Classifications
B; B30; B30B; B30B5/00; B30B5/04; B30B5/06
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
112 words
A roller frame for a continuous band press, said frame comprising: a pair of longitudinally extending generally horizontal beams; a pair of transversely extending generally horizontal beams bridging said longitudinal beams; means rigidly fixing one end of each transverse beam to a respective one of said longitudinal beams; a ball joint between the other end of each transverse beam and the other respective longitudinal beam; a pair of generally parallel horizontally spaced rollers received between said longitudinal beams generally at the ends thereof; a self-aligning bearing rotatably holding each end of each roller on the respective longitudinal beam; and means for limited transverse displacement between each roller and a respective longitudinal beam.
Claim 2
Dependent Claim
112 words
A roller frame for a continuous band press, said frame comprising: a pair of longitudinally extending generally horizontal beams; a pair of transversely extending generally horizontal beams bridging said longitudinal beams; means rigidly fixing one end of each transverse beam to a respective one of said longitudinal beams; a ball joint between the other end of each transverse beam and the other respective longitudinal beam; a pair of generally parallel horizontally spaced rollers received between said longitudinal beams generally at the ends thereof; a self-aligning bearing rotatably holding each end of each roller on the respective longitudinal beam; and means for limited transverse displacement between each roller and a respective longitudinal beam.
Claim 3
Dependent Claim
44 words
The frame defined in claim 1 wherein said press includes a second pair of rollers spaced vertically from the first-mentioned pair of rollers, a support for said second pair, and a plurality of upright vertically extensible hydraulic cylinders between said support and said frame.
Claim 4
Dependent Claim
29 words
The frame defined in claim 2 wherein each of said cylinders has an end connected to a respective end of a respective a respective one of said transverse beams.
Claim 5
Dependent Claim
44 words
The frame defined in claim 3 wherein said transverse beams are hollow and provided at each of their ends with rigid inserts, the insert at one end carrying said ball joint and the insert at the other end projecting through the respective longitudinal beam.
Claim 6
Dependent Claim
40 words
The frame defined in claim 2, further comprising elongated stressing elements each having one end secured in one of said longitudinal means and another end in the other longitudinal beam, said elements extending at an angle to said transverse beams.
Claim 7
Dependent Claim
70 words
The frame defined in claim 5 wherein said stressing elements are arranged in pairs having their said one ends connected relatively closely together to said one longitudinal beam to either side of said means rigidly fixing said transverse beam to said one longitudinal beam and their said other ends connected to said other longitudinal beam relatively far apart to either side of the ball joint of the respective transverse beam.