DE1991523U - Calender roll with adjustable deflection - Google Patents

Description

1.0-489-D 3o August 1964

JOH. ICLEINEWEFERS SÖHNE, KREFELD Necessity requirements Calender roll with adjustable deflection

The innovation concerns a roller for calender * squeezing units or the like, whose deflection during the work process can be regulated in this way by an internal hydraulic or pneumatic counter pressure is that the gap pressure at different working pressures, is always constant across the entire width of the fabric.

Among the various proposals for stepless constant maintenance the nip pressure, a proposal has become known, accordingly between an outer, the roller forming jacket tube and an inner, fixed central roller axis a hydraulic gravel extending over the entire length of the roll is arranged in such a way that the cushion is at an inner one hydraulic pressure with support on the roller axle presses against the jacket tube "

In this arrangement, the roller axis is together with the on her pressure pad, secured against displacement, standing still, while the jacket tube rotates «The disadvantage of this device is that between the pressure pad and the jacket tube

there is sliding friction caused by water or oil lubrication must be reduced to a tolerable value at such speeds. Naturally, the higher the circulation seed rate increases the frictional resistance so strong that this roller construction for the high demanded in recent times Working speeds can no longer be used.

Here the innovation provides a remedy, that the one elastic material existing pressure pad is designed to rotate around its own axis, with the roller core running in the opposite direction to the The jacket pipe must rotate »Since a flat seal at the two ends of the pressure cushion prevents the flexing work occurring during the rotation would not withstand, according to a further innovation, the ends of the pressure pad by cylindrical, expediently bodies mounted in rotating stub axles are closed so that the cylindrical ends of the hoses conically merge with the flat ones Skip the kidney shape of the pressure pad.

Further features of the innovation are given in the description referenced an embodiment shown in the drawing. Show in the drawing.

Fig. 1 is a section perpendicular to the axis that Fig. 2 is a longitudinal section through the roller axis.

As the drawing shows, the roller is driven by a powerful, with a smooth cylindrical surface provided roller core supported with its journals 2 and bearings 4 in the stator j5 the machine is stored. Is concentric around the roll core

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the actual., consisting of a steel tube roller 5 is arranged. On the side facing the calender nip, between the roll core 1 and the jacket tube 5, the one made of an elsfcischen and pressure-resistant plastic or the like. Existing pressure pad 6 arranged, which rotates in the direction of the small arrows., when the jacket tube and the roller core rotate in opposite directions

The ends of the pressure pad 6 are held by cylindrical bodies 8 * which are rotatably mounted on pins 9. Thereby, a flexing at the end of the pressure hose _s prevented, and the pressure hose with its conical widening at both ends can rotate freely. This is requiring of course _that's the end of the pressure hose by a corresponding design of casing pipe and roll core to make room "for this purpose is / as seen from the drawing., The roll core konischverjüngt at the end of the working area approximately 45 °, while the Jacket pipe is flared at the same angle. This expansion is expediently carried out by a conical rotating body 7 attached to the roller ends.

The casing tube and roller core are driven, for example at the end of the roll, not shown, in that both parts are driven separately via a transmission. Here must the speed of the roller core 1 according to its smaller diameter compared to the inner surface of the jacket tube 5 in the run a little faster with the same ratio. The transmission the driving force on the jacket pipe can e.g.

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the conical rotating body 7 arranged gear take place.

To support the concentric runout of the roll shell with respect to the roll core, there are further innovations In the space between the two cones, two conical centering rollers 11 are arranged, which in relation to the Pressure pads are offset from one another by 120 «The centering rollers 11 are expediently made of a friction material and are mounted on journals 12, in which also the pressure springs 15 are performed.

Protection claims;

Claims (4)

Protection claim: 1. Roller for calenders, squeezing units or the like, consisting from a jacket tube., a roller core and one or more Hydraulic pressure cushions arranged between the jacket tube and the roller core to compensate for the deflection during operation of the Roller, characterized in that the pressure pad or pads (6) are rotatably mounted, the roller core likewise is driven in rotation in the opposite direction to the jacket pipe and at the same circumferential speed » 2. Roller according to claim 1, characterized in, that the The ends of the pressure hose (6) are held in cylindrical, rotatingly mounted locking pieces (8) » 5. Roller according to claim 1 and 2, characterized in that .daß the roll shell (5) widens conically at the ends and the roller core (1) are tapered, with each At the end of the roller, two centering rollers (11) mounted rotatably and under spring pressure run on the two conical surfaces. 4. Roller according to claim 1 and 3, characterized in that the centering rollers (11) are designed as friction wheels.