Flexible Foil Cutting Device With Bottom-Wall Clamping
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Solution Overview
Problem
Existing cutting devices for flexible foils suffer from instability when attached to packaging containers, leading to deformation and detachment, and hinder lid closure, due to clamping plates supported on vertical walls.
Innovation Solution
A cutting device with multiple clamping arrangements and end stops, attached to the bottom wall of the packaging container, and a packaging container with receiving openings for clamping elements, ensuring a stable assembly and preventing detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If clamping plates are arranged to be supported upon the vertical front wall of the packaging container, then the cutting device can be attached to the packaging container, but high vertical downward forces are generated leading to deformation and tearing of the front wall
Solution Approach 1:
The clamping arrangements are transitioned from vertical wall support to horizontal bottom wall support. The movement guide is designed with end parts that extend beyond the clamping arrangements, allowing the clamping elements to engage with the bottom wall of the packaging container rather than the vertical front wall, thereby distributing forces horizontally instead of vertically.
Solution Approach 2:
Instead of supporting the clamping plates on the vertical front wall as in the prior art, the invention inverts the support approach by having the clamping arrangements engage with the bottom wall. This inversion changes the direction of support forces from downward vertical forces to horizontal clamping forces, eliminating the deformation and tearing problems.
2Reliability
If clamping plates are supported on the vertical front wall, then the cutting device can be attached, but the cutting device can quickly detach from the front wall
Solution Approach 1:
The attachment mechanism is changed from vertical wall engagement to bottom wall engagement. The end parts of the movement guide extend beyond the clamping arrangements to provide stable engagement with the bottom wall, creating a more secure attachment that prevents quick detachment.
Solution Approach 2:
The end parts of the movement guide are designed to extend beyond the clamping arrangements beforehand, providing pre-positioned engagement points with the bottom wall. This preliminary structural arrangement ensures stable attachment before the cutting operation begins, preventing detachment during use.
3Adaptability or versatility
If the cutting device is attached to the packaging container, then cutting functionality is provided, but closing the packaging container with its lid is difficult due to the cutting device present
Solution Approach 1:
The cutting device is repositioned from the vertical front wall area to the bottom wall area of the packaging container. This spatial relocation allows the lid to close properly over the front wall without obstruction from the cutting device, while the cutting functionality remains intact through the bottom-mounted clamping arrangements.
Data Source
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AI summary
The present disclosure relates to a cutting device arranged for cutting a flexible foil such as aluminium foil or cling film, the cutting device comprising: a movement guide extending in a longitudinal direction comprising a central part and two end parts provided at opposite sides of the central part; a cutter portion provided with an operating body and cutting blade for cutting the flexible foil, wherein the cutter portion is movably arranged to the movement guide for movement of the cutter portion along the movement guide upon application of a force in the longitudinal direction; a plurality of clamping arrangements that are spaced apart along the movement guide, wherein each of the clamping arrangements comprise two clamping elements arranged for clamping a sheet material between the two clamping elements.