Method of and means for controlling internal tension in web rolls
AssigneeBeloit Corporation
InventorEdgar J. Justus
Life of this patent
Estimating the term…
Abstract
A method of and means for controlling internal tension in web rolls during winding thereof onto cores with the aid of winding drums, comprises partially winding the web rolls between the winding drums and a rider roll, backing off the rider roll from the web rolls after they have attained partial diameter, and during continuance of the winding of the web rolls to full diameter applying load-relieving lift to the web rolls through their cores. A lifting device is correlated with the operation of a winder.
Claims20
A method of controlling internal lineal tension in web rolls during winding thereof about cores with the aid of winding drums, comprising:
- partially winding the web rolls between nips at the winding drums and a rider roll which acts through the web rolls to provide controlled tensioning load to said nips until the weight of the web rolls themselves provides sufficient self-loading on the nips for lineal tensioning of the webs in the rolls;
- then releasing the rider roll from the web rolls;
- and
- during continuance of winding the web rolls to full desired diameter applying load relieving lift to the web rolls through their cores to maintain the web tensioning load at said nips at a substantially optimum value as web load weight increases.
Apparatus for controlling internal lineal tensioning in web rolls during winding thereof about cores, comprising:
- winding drums on which the web rolls are in nip engagement;
- a rider roll which imposes lineal web tensioning load on the web rolls toward said nips until the web rolls are partially wound and the weight of the web rolls themselves provide self-loading of the nips to maintain the lineal tension;
- means for releasing the rider roll from the web rolls when the web rolls have attained self-loading weight;
- and
- means operating during continuance of the winding of the web rolls on the drums for applying load relieving lift to the web rolls through their cores to maintain the web tensioning load at said nips at a substantially optimum value until the web rolls have attained full sized diameter and weight.
A winder apparatus for simultaneously winding a slit web onto a plurality of adjacent rolls on a common axis comprising in combination:
- axially extending shaft means for core means for receiving a plurality of webs and winding them onto a plurality of rolls;
- and support means engageable with the shaft means between adjacent rolls for applying a vertical force thereto preventing downward deflection of the shaft means and preventing interference between adjacent rolls due to downward deflection of the axis.
The method of winding a slit web into a plurality of adjacent rolls on a common axis comprising the steps:
- winding adjacent strips of a web onto adjacent rolls on a common axis;
- and applying a vertical support force to the axis between the rolls by engagement with the axis between the rolls by a support means applying a vertical force preventing downward deflection of the axis so that the rolls remain parallel and interference therebetween is avoided.
Dependencies are inferred from the claim text.