Device for winding of fiber webs, especially of paper and board webs

Abstract

The invention relates to a device for winding fiber webs, particularly paper and board webs, into partial web rolls, which device includes winding stations ( 20 ) for winding partial web rolls (R 1 . . . Rn) via a nip between a winding roll ( 12; 13 ) and the roll being formed (R 1 . . . Rn). The winding stations ( 20 ) are supported on a floor ( 25 ) or equivalent foundation and the mass of the roll being formed (R 1 . . . Rn) forms at least part of the nip load of the nip between the winding roll ( 12; 13 ) and the roll being formed (R 1 . . . Rn).

1 - 9 . (canceled) 
     
     
         10 . A device for winding paper and board webs into partial web rolls, comprising:
 winding stations, and at least one winding roll mounted for rotation about an axis at the winding stations;   a plurality of partial web rolls, each partial web roll engaging the at least one winding roll at nips;   a plurality of partial webs extending to the plurality of partial web rolls via the nips between the at least one winding roll and the partial web rolls so as to form the partial web rolls as the at least one winding roll rotates;   wherein each partial web roll engaged with a particular one of the at least one winding roll has a center about which the partial web roll is formed, and wherein a first plane is defined extending between the axis of the particular one of the at least one winding roll and the center about which the partial web roll is formed, the first plane defining a support angle with respect to a horizontal plane which extends through the axis of the particular one of the at least one winding roll;   wherein the winding stations are supported on a floor such that the mass of the partial web rolls applies a gravitational force making up at least part of a nip load at the nips between the at least one winding roll and the partial web rolls as the partial web rolls are formed; and   wherein each winding station has a linear transfer mechanism, the linear transfer mechanism being arranged to transfer the partial web roll centers linearly, such that the support angles of the nips of partial webs rolls on the at least one winding roll remain constant as the partial web rolls are wound.   
     
     
         11 . The device of  claim 10  wherein the linear transfer mechanism includes a structure supporting a winding spool/core on which one of the partial web rolls is formed. 
     
     
         12 . The device of  claim 10  wherein each support angle is greater than 0 degrees and up to 90 degrees. 
     
     
         13 . The device of  claim 12  wherein each support angle is between 45-80 degrees. 
     
     
         14 . The device of  claim 10  wherein the partial web rolls have a periphery which, when the partial web rolls are completed, is a distance of 5-50 mm from the floor. 
     
     
         15 . The device of  claim 14  wherein the periphery of the partial web rolls when completed are a distance of 5-25 mm from the floor. 
     
     
         16 . The device of  claim 10  wherein the device comprises two winding rolls and winding stations are arranged on the two winding rolls. 
     
     
         17 . The device of  claim 10  wherein the partial web rolls are formed about cores, and a part of the mass of the partial web rolls is supported by winding chucks which engage the cores, the winding chucks being supported on arms forming at least a part of the mechanisms on the winding stations arranged to transfer the partial web roll centers linearly. 
     
     
         18 . A method for winding paper and board webs into partial web rolls, the method comprising the steps of:
 winding partial web rolls about centers in a winding station from partial webs;   winding the partial webs via a nip between a winding roll and the partial web rolls on a winding station supported on a floor;   loading the partial web rolls at the nip against the winding roll at least in part with a force caused by a mass formed by the partial web rolls; and   moving linearly the partial web rolls at a selected support angle in relation to the winding roll as the partial web rolls increase in size.   
     
     
         19 . The method of  claim 18  wherein
 the winding roll rotates about a first axis; 
 the partial web rolls rotate about a second axis; and 
 a first plane is defined extending through the first axis and the second axis, and
 wherein the first plane defines a selected support angle measured between the first plane and a horizontal plane passing through the first axis, and wherein the selected support angle is greater than 0 degrees up to 90 degrees. 
 
 
     
     
         20 . The method of  claim 19  wherein the selected support angle is between 45-80 degrees. 
     
     
         21 . The method of  claim 18  further comprising completing the partial web roll and transferring the completed partial web roll from the winding station directly onto the floor. 
     
     
         22 . A device for winding paper and board webs into partial web rolls, comprising:
 winding stations;   at least one winding roll mounted for rotation about an axis;   wherein partial web paths are defined extending about the at least one winding roll to wrap a plurality of partial web rolls via nips defined between the at least one winding roll and the partial web rolls so that the partial web rolls can be wound as the at least one winding roll rotates, each partial web roll having a center about which the partial web roll is formed;   wherein the winding stations are arranged to wind the partial web rolls about the partial web roll centers, and wherein at each winding station a first plane is defined extending between the at least one winding roll axis and one of the plurality of partial web roll centers, the first plane defining a support angle with respect to a horizontal plane which extends through the axis of said at least one winding roll axis;   wherein the winding stations are supported on a floor such that the mass of the partial web rolls will apply gravitational forces to make up at least part of a nip load of a nip between the at least one winding roll and the partial web rolls being formed; and   wherein the winding stations have a mechanism on the winding stations arranged to transfer partial web roll centers linearly such that the support angles of the partial webs rolls on the at least one winding roll remain constant as partial webs rolls are wound on the at least one winding roll.   
     
     
         23 . The device of  claim 22  wherein the mechanism includes a structure arranged to support winding spools/cores on which the partial web rolls are formed. 
     
     
         24 . The device of  claim 22  wherein the support angles are greater than 0 degrees up to 90 degrees. 
     
     
         25 . The device of  claim 22  wherein the support angles are between 45-80 degrees. 
     
     
         26 . The device of  claim 22  wherein the partial web rolls have a periphery, and wherein the winding stations are arranged with respect to the floor such that the peripheries of the partial web rolls when completed are at a distant of 5-50 mm from the floor. 
     
     
         27 . The device of  claim 26  wherein the the partial web rolls peripheries when completed are at a distant of 5-25 mm from the floor. 
     
     
         28 . The device of  claim 22  wherein the device comprises two winding rolls and winding stations are arranged on the two winding rolls. 
     
     
         29 . The device of  claim 22  wherein the mechanism has an arm and winding chucks are supported on the arm so that partial web rolls can be formed about cores supported on the winding chucks so that a part of the mass of a partial web roll is supportable by the winding chucks engageable with the core, and the winding station is thus arranged to transfer a partial web roll center linearly.