Helical Packing Device With Tapered Inner Wall
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Solution Overview
Problem
Existing devices for manually generating spiral-shaped packaging material are cumbersome, pose a risk of injury, and require significant space, as they often necessitate reaching through open cutting mechanisms and rely on two paper rolls, increasing costs and complexity.
Innovation Solution
A device featuring a receptacle with a tapered inner wall and axial holder that allows the packaging material to be unwound from the inside of a roll, reducing the need to overcome inertia and providing a compact, cost-effective solution with a single roll, allowing for flexible orientation and positioning, and incorporating a cutting edge with a ring knife for safe and efficient material separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the packaging material is unwound from the outside of a roll, then the device structure is simple, but the user must overcome the inertia of the entire fibrous web roll making it difficult to strip material quickly
Solution Approach 1:
The patent inverts the conventional unwinding approach by having the packaging material unwound from the inside of the roll rather than the outside. The user pulls the end of the material from the center, allowing the material to be stripped without overcoming the inertia of the entire roll, thus enabling quick and easy material dispensing.
Solution Approach 2:
The receptacle is divided into a stationary outer shell and a movable inner core holder. The inner core can move independently within the receptacle, allowing the material to be fed from the inside while the outer structure remains stable. This segmentation enables the user to pull material without moving the entire heavy roll.
2Ease of operation
If hand lever shears are used to cut the packaging material, then the cutting function is provided, but the user must reach through the opened shear area creating a risk of injury
Solution Approach 1:
A blade is introduced as an intermediary cutting element that moves through a guided path above the user's hand. The blade is actuated by a lever mechanism that keeps the cutting action separated from the user's hand position, eliminating the risk of injury while maintaining the cutting function.
Solution Approach 2:
The cutting mechanism uses a simple blade geometry that replicates the cutting action of traditional shears but with a safer configuration. The blade follows a predetermined path that ensures it never contacts the user's hand, copying the essential cutting function without the harmful exposure.
3Quantity of substance
If two paper rolls are used to provide dense packaging material, then the packaging material density is improved, but the cost of the device increases
Solution Approach 1:
The inner core holder is designed to move dynamically within the receptacle as material is dispensed. This dynamic positioning allows a single roll to maintain optimal contact and feeding geometry throughout the dispensing process, achieving dense material delivery without requiring multiple rolls.
Solution Approach 2:
The geometry of the inner wall section is optimized with a specific taper angle (between 30° and 60°) to control the flow and density of the packaging material as it is unwound. By adjusting this geometric parameter, the system achieves dense material delivery from a single roll.
4Adaptability or versatility
If the dresser is positioned with a static output direction, then the structure is stable, but the user cannot change the position and orientation of the material output
Solution Approach 1:
The receptacle is made rotatable about the longitudinal axis of the roll, allowing the user to dynamically adjust the output direction of the packaging material. This dynamic positioning capability provides versatility without requiring complex mechanical mechanisms, as the rotation is achieved through simple bearing support.
Data Source
AI summary
Device for manually producing a helical packing material (3), comprising a receptacle (20) for at least partially extensively encompassing a wound fibrous material web roll (1), which defines an axial direction (A) and forms an inner side (2), from which the fibrous material web is drawn to form the packing material (3), and an axial holder (30), which is connected to the receptacle (20), wherein an axial end face (6) of the fibrous material web roll (1) is held on the axial holder (30), and a discharge opening (11) for discharging the packing material (3) in an axial direction (A) is formed in the axial holder (30), said axial holder (30) having an inner wall section (31) that tapers towards the discharge opening (11) and faces the end face.