Apparatus for transverse cutting of a continuously moving web and a method therefore
AssigneeRockwool International A/S
InventorJens Houlberg
Life of this patent
Estimating the term…
Abstract
An apparatus for transverse cutting of a web has a frame straddling the web path, a side frame on each side of the web path and an upper frame between the two side frames, a circular saw blade suspended in a pendulum arm pivotably connected to the upper frame, a swinging drive for controlling the swinging movement of the saw blade, wherein the pendulum arm is pivotably mounted in a vertically movable sub-frame of the upper frame, and the vertical movement of the sub-frame relative to the upper frame is managed by a lifting drive that is coordinated with the swinging drive. Also disclosed is a method for transverse cutting a web.
Claims13
An apparatus for transverse cutting of a web on a web path, said apparatus comprising
- a frame straddling the web path having a side frame on each side of the web path and an upper frame between the two side frames,
- at least one circular saw blade defining a linear cutting path generally transverse to a length direction of the web path, said circular saw blade being suspended in a pendulum arm pivotably connected to the upper frame so that the saw blade can swing in the plane of a linear cutting path,
- a swinging drive for controlling the swinging movement of the at least one saw blade, wherein
- the pendulum arm is pivotably mounted in a vertically movable sub-frame of the upper frame, and the vertical movement of said sub-frame relative to the upper frame is managed by a lifting drive that is coordinated with the swinging drive.
A method of transverse cutting a web on a web path, said method comprising the steps of
- providing a web;
- swinging at least one circular saw blade in a cutting path across the web path, where said saw blade is suspended in a pendulum arm which is pivotally arranged in a sub-frame;
- and
- moving said sub-frame in an upwards direction during the pendulum swing of the saw blade and thereby vertically shifting the pivot point of the pendulum arm during the pendulum swing of the saw blade.
Dependencies are inferred from the claim text.