Coreless Paper Roll Rewinding With Hydraulic Arbor Extraction
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Solution Overview
Problem
Existing coreless retail paper rolls lack rigidity and are easily deformable, limiting their use in high-volume applications and requiring manual or semi-automatic production with slow throughput speeds.
Innovation Solution
A paper rewinding machine with a hydraulic actuator and clamping mechanism to extract a rewind arbor from wound retail paper, combined with a slitting assembly and collection conveyor, enabling the production of rigid coreless rolls at high speeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If coreless retail paper rolls are produced without a disposable core, then environmental waste is reduced and material cost decreases, but the rolls lack rigidity and are easily deformable during handling
Solution Approach 1:
The patent changes the physical parameters of the paper roll by producing coreless rolls with controlled inner diameters (0.25 inches to 1.5 inches) and using specific paper weights (15-50 lbs.) to achieve the desired balance between environmental benefits and structural rigidity. The hydraulic extraction process also changes the physical state by applying controlled forces to remove the arbor without deforming the roll.
Solution Approach 2:
The patent extracts the disposable core (rewind arbor) from the paper roll using a hydraulic actuator that applies extraction forces up to 32 lbs/in. This removal of the core eliminates the harmful waste factor while the controlled extraction process maintains the structural integrity and rigidity of the resulting coreless roll.
2Reliability
If coreless retail paper rolls are produced with small inner diameters, then some commercial success is achieved, but production speed remains slow and volume is limited
Solution Approach 1:
The patent employs a hydraulic actuator with a hydraulic cylinder to automate the arbor extraction process. The hydraulic system provides controlled extraction forces up to 32 lbs/in and enables high-speed operation at rates up to 2,300 feet per minute, thereby increasing production volume and speed while maintaining commercial viability.
Solution Approach 2:
The patent accelerates the production process by using high-speed winding and extraction operations. The hydraulic actuator enables rapid arbor removal, and the overall process operates at accelerated speeds up to 2,300 fpm, transforming a previously slow manual process into a high-volume automated production system.
3Adaptability or versatility
If manual or semi-automatic settings are used to produce coreless rolls, then production flexibility is maintained, but throughput speed is slow and labor intensity is high
Solution Approach 1:
The patent implements an automated system where the hydraulic actuator automatically extracts the rewind arbor from the paper roll after winding is complete. The system self-regulates the extraction process using hydraulic pressure and force control, eliminating the need for manual intervention while maintaining production flexibility through programmable parameters.
Solution Approach 2:
The patent replaces manual mechanical extraction methods with a hydraulic actuation system. The hydraulic cylinder substitutes for manual labor, providing automated, high-speed arbor removal with controlled forces up to 32 lbs/in, thereby increasing throughput speed while maintaining operational flexibility through hydraulic control.
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 machine produces rigid coreless retail paper rolls with improved resistance to crush, allowing high-volume production and use in large retail stores, with extraction forces up to 32 lbs/in, and speeds up to 2,300 fpm.
Implementation Method 1
a hydraulic actuator operable to extract the rewind arbor from the wound retail paper
Data Source
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AI summary
A paper rewinding machine includes a rewinding assembly operable to produce coreless retail paper rolls.