Winding – tensioning – or guiding – Convolute winding of material – With particular drive
Patent
1998-02-23
2000-06-20
Nguyen, John Q.
Winding, tensioning, or guiding
Convolute winding of material
With particular drive
242547, B65H 1814, B65H 1826
Patent
active
060767626
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention pertains to a rider roller assembly for exerting a load force to at least one wound roll of a web-like material, such as at least one roll of paper, during the winding in a winder comprising at least one supporting or carrier drum, supporting or carrying the wound roll being rotary-driven on its axis of rotation, with the features according to the preamble of claim 1.
2. Description of the Prior Art
A generic rider roller assembly comprises vertically movable relative to the wound roll depending on the diameter thereof, are rotatably mounted to the beam and are capable to engage the wound roll along a contact line (nip line), independently pivoting the rider roll wheels on a swiveling axis relative to the beam, at least one wound roll, and the at least one wound roll counter-balancing the pressing means, and optionally, counter-balancing the weight of the rider roll wheels.
Generic rider roller assemblies are known from U.S. Pat. No. 5,320,299. By virtue of its citation, the disclosure of this document is fully incorporated in the disclosure of the present description.
In this known rider roller assembly, the pivoting of the individual rider roll wheels on its associated supporting arms each is effected by means of a piston rod, which is loaded at each end by piston/cylinder units, the middle section of which has a joint for pivotable link with the associated supporting arm. It has been shown that these known rider roller assemblies already represent a significant advance in improvement of the windings of the wound roll. However, the piston/cylinder units acting on the same piston rod at both ends must be exceptionally precisely aligned. Further more, the corresponding supporting arm transmits a transverse force to the piston rod due to its pivoting on its swiveling axis.
AT 357,861 describes a rider roller assembly having a plurality of rider roll wheels each rigidly fixed to one end of a piston rod. The rider roll wheels are moved in the axial direction of the piston rod by means of a hydraulically actuated elements, serving also as vibration dampers.
DE 21 47 673 discloses a roller assembly having a plurality of rider roll wheels being pivotably mounted by means of lever elements to a beam, wherein pressure chambers fluidly connected with each other are arranged inside the beam. To cause pivoting of the roll wheels, the pressure chamber is linked via membranes to the lever elements.
SUMMARY OF THE INVENTION
It is an object of this invention to provide a rider roller assembly which is capable of having as many rider roll wheels as possible disposed at a generic rider roller assembly wherein the reaction accuracy to a given load program depending on the diameter of the wound roll is improved.
These objects are achieved with a rider roller assembly comprising the features according to claim 1.
In the rider roller assembly according to the invention, the means for loading, on the one hand, and for lifting or balancing out the rider roll wheels, on the other hand, are combined in double-way acting piston/cylinder units with single-sided piston rods; inserted between the free end of each piston rod and the corresponding supporting arm of the rider roll wheels may be at least one compensating means, which enables a relative movement, independent of the axial movement of the piston rod, between the supporting arm and the piston rod in the radial direction in relation to the piston rod.
In the rider roller assembly according to the invention, the friction-related load of the piston rod is exceptionally low, so that even slight deviations between the pressing forces and the counter-acting forces for pressing, compensating or lifting effect a change of the nip load between the corresponding rider roll wheel and the loaded wound roll.
Practical modifications of the subject of the invention, which specifically ensure a high level of operational safety and simple change of individual rider roll wheels or corresponding piston/cylinder units and en
REFERENCES:
patent: 2851869 (1958-09-01), Quoos et al.
patent: 3206134 (1965-09-01), Printz et al.
patent: 3602448 (1971-08-01), Muensterer
patent: 3648342 (1972-03-01), Dorfel
patent: 3762280 (1973-10-01), Kreuter et al.
patent: 3837593 (1974-09-01), Dorfel
patent: 4095755 (1978-06-01), Syngg et al.
patent: 4165843 (1979-08-01), Wedig et al.
patent: 4281589 (1981-08-01), Stoll
patent: 5320299 (1994-06-01), Fitzpatrick et al.
Boehm Gaston
Dorfel G. Walter
Gorner Bernd
Beloit Technologies Inc.
Nguyen John Q.
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