Angled Core Slot Bag Dispenser for Secure Roll Retention
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Solution Overview
Problem
Existing bag dispensers for roll-mounted film bags fail to securely retain the bag roll, potentially leading to hazardous situations, and lack adaptability to various mounting systems, visual refilling indicators, durability, and ease of cleaning.
Innovation Solution
An angled core slot dispenser design featuring an inclined platform, core pin, guide slots, and optional features like guide rails, side constraints, and a security link to securely hold the bag roll, adapt to different mountings, and provide visual refilling cues, while being durable and easy to clean.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional bag dispensers are used, then bags can be dispensed, but the bag roll is not securely retained and may accidentally leave the dispenser
Solution Approach 1:
The dispenser applies preliminary restraining force through side constraints and a rear barrier that actively prevent the bag roll from moving forward before any accidental pull can occur. The security link pre-tensions the bag roll against the inclined platform, creating a counter-balancing force that anticipates and prevents the harmful effect of the roll falling out.
Solution Approach 2:
The inclined platform and multi-point constraint system provide a cushioning effect by distributing restraining forces across multiple contact points. This prevents sudden releases or jerky movements that could cause the bag roll to accidentally leave the dispenser, cushioning against potential harmful events before they occur.
2Adaptability or versatility
If simple dispenser designs are used, then manufacturing is easier, but adaptability to various mounting systems is reduced
Solution Approach 1:
The dispenser incorporates multiple mounting interface options including side mounting brackets, rear mounting provisions, and adaptable attachment mechanisms that can interface with various support surfaces (vertical, horizontal, or angled). This multi-functionality allows the same dispenser design to adapt to different mounting systems without requiring redesign, resolving the contradiction between versatility and complexity.
3Reliability
If angled core slot design is used, then bag roll security is improved, but device complexity increases
Solution Approach 1:
The inclined platform uses a curved or angled surface rather than a flat horizontal one, creating a geometric constraint that naturally guides and secures the bag roll in position. This curved geometry provides security through shape alone, eliminating the need for complex mechanical locking mechanisms while maintaining reliable bag roll retention.
4Loss of information
If visual refilling indicators are added, then user awareness is improved, but device complexity increases
Solution Approach 1:
The dispenser incorporates visual indicators that change appearance (such as color or transparency) to communicate the refilling status to users. When the bag roll is depleted or needs refilling, the indicator provides a clear visual signal without requiring electronic components or complex sensing mechanisms, thus adding information delivery while minimizing complexity.
Data Source
AI summary
An angled core slot dispenser includes an inclined platform sized and shaped to fit beneath a roll of film bags wound on a hollow central core. A core pin has first and second ends, is sized and shaped to fit slidably within the central core and has at least one notch that extends across one of the ends. First and second guide slots are sized, shaped and located to fit slidably about the ends of the core pin. At least one guide rail is located between outer edges of at least one of the guide slots and is sized and shaped to slidably engage the at least one notch. A bag stream guide, side constraints and a snagging hook are attached to the bag dispenser. The dispenser may be attached to an adapter for a bin mounted to a vertical surface formerly used to hold a single wide bag roll.