Abstract:
The roller is provided for pressure treatment of a strip of paper, textile, plastic film, sheet metal or similar material. It includes a hollow roller made of a fiber-reinforced synthetic resin material, and a cross-beam which passes through the hollow roller lengthwise. The cross-beam is mounted at its ends, in external supports, so as not to rotate. Hydrostatic support elements are arranged on the cross-beam on the side on which pressure is exerted. The elements can be pressed against the inside circumference of the hollow roller by means of a hydraulic fluid. The support elements have a length not exceeding 20 cm in the longitudinal direction of the hollow roller, follow each other closely in the longitudinal direction of the cross-beam, and can all be controlled independently of one another.
Abstract:
The invention relates to a method and a device for correcting the bending of a shaft (2), an axle or another carrier resting with both ends upon a pair of bearing elements (6, 7). The carrier bends under its own weight and/or additional loading and/or due to forces applied on the bearing elements. Said bearing elements are submitted to a bending counterforce (4) produced using the carrier weight and/or additional loading and/or forces applied.
Abstract:
The present invention comprises a method for producing a bending-resistant, elongated body (1), preferably a shaft or beam. The invention is characterized in that an elongated blank is produced having at least one cavity (2, 2a) extending essentially along the entire length of the blank, the inner surface of which cavity is at a distance from the mass center of the blank seen in a section at right angles to its longitudinal axis and that affixed in the cavity (2, 2a) is a fiber composite body (3, 3a) with an outer surface essentially congruent with the inner surface of the cavity and that the majority of the fibers in the fiber composite body (3, 3a) both extend essentially parallel to the longitudinal axis of the elongated blank and are elongated along the whole of its length. The invention also relates to an arrangement produced according to the method.
Abstract:
Disclosed is a paper feeding mechanism making it possible to reliably prevent deflection of the paper feeding roller and perform a stable paper feeding free from feeding deviation even when the paper feeding roller is formed as an elongated member. There is arranged a paper feeding roller and a plurality of press contact rollers held in press contact with the paper feeding roller, and there is arranged on the opposite side of the press contact rollers with respect to the paper feeding roller a support block which is held in contact with the peripheral surface of the paper feeding roller to support the paper feeding roller.
Abstract:
A roller arrangement with a deflection compensation roller and a counter roller. The deflection compensation roller has a shell, through which a hydrostatic support device is supported on a carrier. The shell-ends are each supported on a ring bearing which is guided in an action plane and is radially adjustable and can be loaded by a force in the slide direction. The shell-ends can each be loaded by a torque which has an axis perpendicular to the action plane. In this way, the deflection of the shell can be matched to be proportionate to the deflection of the counter roller.
Abstract:
In a hydraulically supported roll including a rotatable hollow cylinder and a stationary crosshead, transverse end seals are provided to seal the annular clearance space formed between the crosshead and the inner circumference of the hollow cylinder. Each transverse end seal includes a slide ring having a chamber located on the first surface of the slide ring abutting a counter-ring. The chamber provides hydraulic relief. Radially outside of the chamber a narrow groove is provided which communicates with the low-pressure side of the slide ring via a channel. The channel discharges hydraulic fluid flowing to the first surface of the slide ring as a result of the high pressure in the clearance space.
Abstract:
A roll for supporting a moving web includes a helical spring covered by a flexible outer shell to provide for curvature of the roll which may be preset to compensate for deflections of the roll. The roll has an inner core or shaft construction which includes an elongate shaft extending through a plurality of spaced-apart annular flanges each of which includes a groove at the same lead angle as the lead angle of the helical spring for threadedly engaging the turns of the spring and aiding in fabrication of the roll. The shaft may be supported in an antideflection mode of operation by securing the end thereof for rotation in spherical bearings and providing means at the distal ends of the shaft for imparting a selected deflection to the shaft. The roll may also be configured as a bowed roll by providing a nonrotational fulcrum for the shaft at each end of the roll and by providing means at each distal end of the roll for imparting bowing forces to the roll. In this configuration, the flanges which connect the shaft to the flexible portion of the roll are provided as bearings with the central portions of flanges forming a bearing race to be secured to the shaft and the outer portions of the flange forming an outer bearing race for threaded engagement with the helical spring. As a bowed roll the apparatus is further provided with means for adjusting the supporting apparatus of the roll for varying the plane of deflection.