Expandable Slit Sheet Dispenser With Removable Roll Tensioning
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Solution Overview
Problem
Existing devices for dispensing expanded slit sheet material often require parts to be removed and reattached during roll changes, leading to inefficiencies and labor costs.
Innovation Solution
A tensioning device that fits onto a bar and yoke, allowing a roll of expandable slit sheet paper to be installed without removing any parts, utilizing a core support member and frictional resistance to manage paper expansion and dispensing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If existing devices for dispensing expanded slit sheet material are used, then material dispensing function is achieved, but parts must be removed and reattached during roll changes causing labor inefficiency
Solution Approach 1:
The device is segmented into a fixed housing and a removable tensioning device assembly. The tensioning device can be independently removed and reattached without disassembling other components, enabling quick roll changes while maintaining structural integrity of the overall system.
Solution Approach 2:
The tensioning device is extracted as a separate removable component from the main dispensing mechanism. This allows the tensioning device to be taken out, adjusted, or replaced without affecting the core dispensing function, thereby simplifying roll change operations.
2Ease of operation
If a removable tensioning device is used for roll changes, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The tensioning device combines multiple functions (tension application, roll securing, and easy removal) into a single integrated assembly. This merging of functions reduces the number of separate components needed, thereby limiting the increase in overall device complexity while maintaining ease of operation.
Solution Approach 2:
The tensioning device is designed with universal applicability to work with different roll sizes and types. The bar and yoke configuration provides multi-functional capability for tensioning, securing, and quick release operations, reducing the need for multiple specialized components.
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
Enables seamless roll changes with reduced labor and material waste, enhancing operational efficiency and cost-effectiveness in dispensing expandable slit sheet paper.
Implementation Method 1
second means for variably applying a frictional rotation resistance to the first interior core member end region
Data Source
AI summary
A device for expanding and dispensing expandable slit sheet paper includes a pair of support members for a roll of expandable slit sheet paper. The roll of expandable slit sheet paper has an interior core member and a roll of expandable slit sheet paper wound on said interior core member. The interior core member has an axial length that is greater than the width of said slit sheet paper that is wound on said interior core member and has end regions that extend beyond the roll of expandable slit sheet paper. Pressure means is provided for pressing a first end region against its core support member and applying a frictional rotation resistance to the core member end region. The roll of expandable slit sheet paper is mounted on the device by positioning one end region under the pressure means and in a support relationship with its core support member while the roll of expandable slit sheet paper is inclined with respect to the device. The other end region is then moved into its supported position with its core support member. An adjustable downward pressure is exerted on the paper core end region and causing the paper core end region to be pressed against its support member as the paper is pulled. The downward pressure creates the friction required to enable the unexpanded slit sheet to be unwind and fed while simultaneously expanding.