Rolled product dispenser with multiple cutting blades and cutter assembly for a rolled product dispenser
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Solution Overview
Problem
Existing rolled product dispensers often experience 'tabbing' issues due to high pressure applied on single blades during cutting, leading to incomplete tearing of the paper when a user grasps and pulls the web.
Innovation Solution
A rolled product dispenser featuring a dual-blade cutting assembly with blades that move between cutting and non-cutting positions, guided by a system of grooves, to reduce pressure and minimize tabbing by ensuring clean cuts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single cutting blade is used, then the device complexity is reduced, but tabbing occurs due to high pressure applied on the blade during cutting
Solution Approach 1:
The single cutting blade is segmented into multiple cutting blades (first cutting blade and second cutting blade) that operate in sequence. The first blade makes an initial cut and the second blade completes the severing action, distributing the cutting pressure across multiple blades rather than concentrating it on a single blade, thereby preventing tabbing while maintaining a relatively simple overall device structure
2Productivity
If high pressure is applied on the cutting blade, then the cutting speed is improved, but tabbing occurs when the user grasps and pulls the paper
Solution Approach 1:
The cutting action is segmented into multiple stages using sequential blades. The first blade applies pressure to make an initial cut, then the second blade applies pressure to complete the severing. This segmentation distributes the total cutting pressure over time and across multiple blades, achieving effective cutting without concentrating excessive pressure that would cause tabbing
Solution Approach 2:
The first cutting blade performs a preliminary cutting action before the second blade completes the severing. This preliminary cut weakens the web structure in a controlled manner, allowing the second blade to finish the cut with reduced pressure, thereby preventing tabbing while maintaining cutting effectiveness
Data Source
AI summary
There is provided a rolled product dispenser for dispensing a web of rolled product. The rolled product dispenser includes a housing, a dispensing assembly operationally connected to the housing and interacting with the web of the rolled product and a cutting assembly cooperating with the dispensing assembly to sever the web of rolled product. The cutting assembly includes at least two cutting blades, each one of the cutting blades having a first end and a second end. The first end is pivotally mounted and the second end is operationally connected to a guiding assembly for guiding the blade between a cutting position and a non-cutting position.