Tail Pick-Up Pulley for Automatic Fibrous Web Transfer
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Solution Overview
Problem
Existing methods for transferring a cellulose-based fibrous web tail from a first treatment unit to a second unit are inefficient and pose safety hazards due to manual handling, which can result in the tail breaking and require multiple attempts for successful transfer.
Innovation Solution
A method involving a tail pick-up pulley and a separating member to move the tail into position without excessive tension, using a tail conveyor device to catch and transfer the tail, ensuring low tension and automatic transfer without manual interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual handling methods are used to transfer the tail, then operators can directly position the tail, but operators are exposed to safety hazards and the transfer success rate is low
Solution Approach 1:
The patent introduces a tail pick-up pulley as an intermediary device between the tail and the operator. The pulley engages with the tail and transports it through the drying cylinders, eliminating the need for operators to manually position the tail near running machinery. This mediator device resolves the contradiction by enabling tail positioning while removing operators from hazardous zones.
Solution Approach 2:
The system enables self-service operation where the tail pick-up pulley automatically engages with the tail and transports it through the drying cylinders without requiring manual intervention. The pulley system is designed to autonomously perform the tail positioning task that previously required dangerous manual handling.
2Productivity
If the tail is moved through running wires and rolls, then the tail can be transferred to the second treatment unit, but the tail is exposed to excessive tension that may cause breakage
Solution Approach 1:
The tail pick-up pulley serves as a mediator that changes the path of tail transport. Instead of the tail passing through running wires and rolls that create excessive tension, the pulley engages with the tail and transports it through the drying cylinders in a controlled manner, reducing tension and preventing breakage while maintaining transfer capability.
Solution Approach 2:
The invention changes the physical parameters of tail transport by using a pulley system with controlled movement through the drying cylinders. This alters the tension, speed, and path parameters of tail transport, reducing the mechanical stress on the tail from its original path through running wires and rolls.
3Reliability
If multiple attempts are made to transfer the tail successfully, then the transfer can eventually be achieved, but time is lost and productivity is reduced
Solution Approach 1:
The automated tail pick-up pulley system performs the tail transfer operation autonomously without requiring multiple manual attempts. The pulley automatically engages with the tail, transports it through the drying cylinders, and completes the transfer in a single operation, eliminating the time loss associated with repeated manual transfer attempts.
Solution Approach 2:
The pulley system enables continuous tail transfer operation by automatically engaging and transporting the tail through the drying cylinders without interruption or repeated attempts. This continuous action eliminates the downtime and delays associated with manual transfer methods that require multiple attempts.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method effectively transfers the tail with low risk of breakage and reduces operator exposure to hazards, achieving a high success rate in each attempt and ensuring safe and automatic transfer.
Implementation Method 1
moving, by means of the tail pick up pulley, the tail into a cutting position
Implementation Method 2
forming, by means of a separating member, a space between the first face of the tail and the first treatment unit
Implementation Method 3
cutting the tail and catching the tail by means of a tail conveyor device for forwarding the tail
Data Source
Figure 1
Figure 2a
Figure 2b
AI summary
A device (18) for transferring a tail of a cellulose based fibrous web (8) from a first unit to a second unit comprises a separating member (20) , which is adapted to form a space (95) between a first face (96) of the tail (92) and the first unit, a tail pick up pulley (30) which is adapted to be inserted in said space (95) between the first face (96) of the tail (92) and the first unit, the tail pick up pulley (30) further being adapted for moving the tail (92) into a cutting position, a cutting device being adapted for cutting the tail (92) at said cutting position, and a tail conveyor device being adapted for catching the tail cut at the cutting position, and for forwarding the cut tail (92) to the second unit.