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US 6,923,400 B2Granted
Process and device for continuous reeling of a pulp sheet
AssigneeAndritz Inc.
InventorsWilhelm Mausser, Gerald Schadler
Life of this patent
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Abstract
A process for continuous reeling of a pulp sheet, particularly a paper sheet, where the sheet runs over a reel drum and is later wound on a winding unit. The pressing force in the nip between the horizontal reel and the reel drum being measured without any losses during the entire winding process. This process is implemented by a device having a reel drum and a horizontal reel supported on load-sensing devices.
Claims5
Process for continuous reeling of a pulp sheet, comprising the steps of:
- clamping a horizontal reel on a primary arm in a substantially vertical position above a reel drum;
- swiveling the primary arm around an axis of the reel drum until the horizontal reel is in a substantially horizontal position and resting on the reel drum, while swiveling the primary arm
- running the pulp sheet over the reel drum;
- winding the pulp sheet on a core shaft of the horizontal reel;
- pressing the pulp sheet in a nip between the horizontal reel and the reel drum;
- measuring the value of the pressure force in the nip directly with a load sensing device disposed below the core shaft, whereby frictional losses associated with other process components are eliminated;
- and
- controlling the pressure force in the nip at a desired level, using only the measured value of the pressure force, during the entire winding process from the moment of taking over the pulp sheet onto the core shaft of the horizontal reel until the horizontal reel is pulled away from the reel drum.
5 more elements
Apparatus for continuously reeling a pulp sheet, comprising:
- a horizontal reel for having the pulp sheet wound thereon;
- a reel drum for pressing the pulp sheet onto the horizontal reel;
- and
- a primary arm including a load sensing device, a plurality of roller bearings, and a hydraulic cylinder supported on the roller bearings, the load-sensing device being integrated into the hydraulic cylinder, and the horizontal reel and the pulp sheet wound thereon being biased toward the reel drum by the hydraulic cylinder and the load sensing device as the horizontal reel is swiveled by the primary arm from a substantially vertical position above the reel drum to a substantially horizontal position and resting on the reel drum, while swiveling the primary arm.
1 more element
Dependencies are inferred from the claim text.