Devices for drawing in a web of material
AssigneeKoenig & Bauer Aktiengesellschaft
InventorErwin Paul Josef Lehrieder
Life of this patent
Estimating the term…
Abstract
A device for drawing a web of material into a machine, such as a printing press includes a draw-in mechanism that can be advanced along a draw-in path, and to which the web of material can be coupled. The draw-in mechanism can be driven by an electric motor that can be regulated or controlled in response to measurement data which is determined during the draw-in process. The motor can be regulated or controlled in synchronism with another unit of the machine, which other unit is mechanically driven independently of the electric motor.
Claims8
A device for drawing a web of material into a processing machine comprising:
- a flexible draw-in mechanism including a tape having a finite length, said tape having a tape first end and a tape second end, said draw-in mechanism being adapted to be driven for movement of said tape second end along a draw-in path;
- a reel body, said tape first end being connected to said reel body, said tape having said finite length being windable completely on said reel body;
- an effective reel body radius, said effective reel body radius being changeable as a function of an amount of said tape finite length wound on said reel body;
- and
- a controllable electric motor usable to drive said reel body independently of the processing machine to cause said finite length tape to travel along said draw-in path, said electric motor being controllable to maintain a constant preset moment applied to said tape by said changeable effective reel body radius of said reel body driven by said electric motor to apply a constant draw-in force to said draw-in mechanism.
A device for drawing a web of material into a processing machine comprising:
- a flexible draw-in mechanism including a tape having a finite length, said tape having a tape first end and a tape second end, said draw-in mechanism being adapted to be driven for movement of said tape second end along a draw-in path;
- a reel body, said tape first end being connected to said reel body, said tape having said finite length being windable completely on said reel body;
- an effective reel body radius, said effective reel body radius being changeable as a function of an amount of said tape finite length wound on said reel body;
- and
- a controllable electric motor usable to drive said reel body independently of the processing machine to cause said finite length tape to travel along said draw-in path, said electric motor being controllable to maintain a preset torque applied to said tape.
Dependencies are inferred from the claim text.