Multi-Piece Paper Roll Support Plug for Overspin Control
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Solution Overview
Problem
Conventional core plugs for paper rolls often cause overspin during dispensing, leading to issues like double sheeting and reduced cutting effectiveness, and require additional protection during shipping due to their protruding design.
Innovation Solution
A multi-piece roll end support plug with inner and outer plug members that provide frictional engagement to control overspin, allowing flush mounting on the paper roll and reducing wear on dispenser supports by transferring spinning stress to the plug members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional single-piece core plug is used, then the roll support structure is simple, but overspin occurs during dispensing causing double sheeting and reduced cutting effectiveness
Solution Approach 1:
The core plug is divided into two separate members: an inner plug member that attaches to the roll support and an outer plug member that contacts the paper roll. This segmentation allows the inner member to remain stationary while the outer member rotates with controlled friction, preventing overspin during dispensing operations.
Solution Approach 2:
The outer plug member acts as an intermediary between the stationary inner plug member and the rotating paper roll. It transfers rotational motion while providing frictional control to prevent excessive rotation, thereby mediating the interaction between the support structure and the dispensed product.
2Ease of manufacture
If a conventional core plug with male projection is used, then the plug can be easily attached, but extra shipping protection pads are required
Solution Approach 1:
Instead of having the plug protrude outward with a male projection that requires protective packaging, the design inverts the approach by creating a flush-mounted plug where the outer plug member extends slightly beyond the roll end but is contained within the roll's outer diameter envelope, eliminating the need for additional protective pads during shipping.
3Device complexity
If a stationary roll support is used, then the dispenser structure is simple, but the roll support experiences high wear from continuous spinning
Solution Approach 1:
The support system is segmented into a stationary inner plug member attached to the dispenser and a rotating outer plug member attached to the paper roll. This segmentation transfers the wear from the stationary roll support to the replaceable outer plug member, extending the service life of the dispenser's roll support.
Solution Approach 2:
The outer plug member is designed as a consumable component that absorbs wear during the roll's service life. Once worn, it can be replaced by removing the paper roll and installing a new outer plug member with a simple twisting motion, while the expensive stationary inner plug member remains intact.
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
Prevents overspinning of paper rolls during dispensing, eliminates the need for extra shipping protection, and extends the life of dispenser roll supports by distributing wear across the plug members.
Implementation Method 1
a second plug member positionable in the elongated central paper roll opening and rotatably mounted on the first plug member and in frictional engagement with the first plug member to resist rotation of the second plug member and the paper roll attached thereto
Data Source
AI summary
A paper roll end support plug includes a first plug member non-rotatably mounted on a dispenser and a second plug member inserted in the paper roll end and rotatable relative to the first plug member, the plug members being in frictional engagement to prevent overspin of the paper roll during dispensing of paper from the roll.