公开(公告)号：US20240400329A1

公开(公告)日：2024-12-05

申请号：US18677231

申请日：2024-05-29

Applicant: Valmet Technologies Oy

Inventor： Jaakko HAAPANEN ,  Mikko RÄMÄ

IPC: B65H19/18 ,  B65H23/04

Abstract: The invention relates to a method and an unwinding section for unwinding a fiber web from a parent roll, which unwinding section comprises at least one unwinder for unwinding a fiber web from a parent roll and a joining device configured to join a trailing end of a running-out parent roll to a beginning end of a next, new parent roll to be unwound in a parent roll change. The unwinding section comprises a broke handling device configured to handle broke. The unwinding section comprises a tensioning device located between the joining and the broke handling, and the tensioning device is configured to tension and straighten the fiber web to be joined between the tensioning device and the joining device before joining of the end of the fiber web from the running-out parent roll and the end of the fiber web from the next parent roll to be unwound.

公开(公告)号：US20220396444A1

公开(公告)日：2022-12-15

申请号：US17838188

申请日：2022-06-11

Applicant: Valmet Technologies Oy

Inventor： Jaakko HAAPANEN ,  Henry VIRTA ,  Kenneth ÅKERLUND

IPC: B65H19/18 ,  B65H19/20 ,  B65H21/00

Abstract: A method for joining ends of fiber webs with a device comprising a tool element with a gripping device and a traversing punching device. A run of the fiber web from the emptying parent roll is moved to a joining position at the tool element. The trailing end of the parent roll fiber web is cut upstream from the joining position and the fiber web is attached to the tool element by a gripping device of the tool element. An end of a new roll fiber web is guided to contact with and to an overlapping position with the trailing end of the parent roll fiber. The traversing punching device is moved across the width direction of the fiber webs and makes at least one joint cut and joins the fiber webs. The new fiber web is cut downstream from the joint, and then tension control is turned on.

公开(公告)号：US20230030512A1

公开(公告)日：2023-02-02

申请号：US17867441

申请日：2022-07-18

Applicant: Valmet Technologies Oy

Inventor： Jaakko HAAPANEN

IPC: B65H19/12 ,  B65H19/22

Abstract: An assembly for handling reel spools, comprising linear support rails, having a first end and a second end, arranged parallel to each other, and a reel spool cart arranged on the support rails, the support rails being arranged at a first distance from each other, the first distance being greater than axial length of the reel spool, and the cart being provided with a hoisting device configured to hoist the reel spool vertically from beneath of at least one of the support rails to at least partly above at least one of the support rails.