Paper Band Dispenser Eliminates Loop Box for High Speed Turn-Up
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Solution Overview
Problem
Existing paper machine turn-up processes face inefficiencies and reliability issues due to constraints in deploying paper band tapes, leading to potential jams, decreased production, inconsistent winding, excessive waste, and unsafe operating conditions.
Innovation Solution
The introduction of a paper band dispenser system that eliminates the loop box, featuring a primary and secondary tape dispensing module, both automated and manual, allowing for independent operation and rapid module replacement or repair without halting the paper machine, ensuring consistent and efficient paper transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If paper band is deployed from a loop box, then the turn-up process can be performed, but the deployment speed is constrained and jamming occurs
Solution Approach 1:
The patent extracts and eliminates the loop box from the paper band deployment system. By removing this constrained component, the paper band can be deployed directly from a reel without the speed limitations and jamming issues inherent in loop box mechanisms, thereby simultaneously improving deployment speed and reliability
Solution Approach 2:
The patent segments the paper supply system into distinct functional modules: a paper band reel, a dispensing mechanism, and a cutting mechanism. This segmentation allows each component to operate independently at optimal speeds without the constraints of a loop box, improving both deployment speed and reliability
2Reliability
If a single paper band dispensing module is used, then the system is simple, but failure results in prolonged halt of paper machine
Solution Approach 1:
The patent implements a standby paper band dispensing module that is pre-configured and ready for immediate deployment. When the primary module fails or requires maintenance, the standby module can take over without interruption to the paper machine operation, ensuring continuity while maintaining relatively simple system architecture
Solution Approach 2:
The patent provides redundancy by having a backup dispensing module ready in advance. This cushioning against failure ensures that if the primary module malfunctions, the system can seamlessly switch to the backup, maintaining reliability without requiring complex real-time decision-making or control systems
3Reliability
If paper band is deployed slowly to avoid jamming, then jamming is reduced, but production efficiency decreases
Solution Approach 1:
By removing the loop box constraint, the system can deploy paper band at high speeds without the jamming issues that previously forced slow deployment. This extraction of the problematic component enables both high speed and high reliability simultaneously
Solution Approach 2:
The patent replaces the mechanical loop box deployment mechanism with a direct reel-to-dispenser system. This substitution eliminates the speed constraints and jamming prone to the loop box mechanism, allowing rapid paper band deployment that maintains both reliability and productivity
Data Source
AI summary
An improved paper band delivery assembly for reliable high speed delivery of a turn-up paper band across a moving web of paper being wound onto a spool. The turn-up paper band is made ready for a turn up procedure by coiling a predetermined length of paper band suitable for a particular machine and retaining the coiled paper band in a reservoir pending deployment across a spool for a turn up procedure. The paper band may be coiled via manual operation or via automated operation. Coiling apparatus may be modularly replaced on a paper making machine. The coiled paper band may be supported within the reservoir on rollers, pins, or other items conducive to fast and reliable uncoiling.