Magnetic Web Feeding Alignment for Packaging Material
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Solution Overview
Problem
Existing devices for feeding packaging material to an application station often result in misalignment of pre-laminated holes, leading to packaging material damage and increased component complexity, as the material is subjected to stress and requires adjustments to ensure correct positioning of opening devices.
Innovation Solution
A device that uses magnetic markers aligned with pre-laminated holes to detect their positions and adjust the web's path using motors and sensors, ensuring accurate alignment without mechanical stress, reducing the need for a gripping member and simplifying the design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a gripping member is used to adjust the web position, then alignment precision is improved, but device complexity and risk of material damage increase
Solution Approach 1:
The patent replaces the mechanical gripping member system with a magnetic field-based positioning system. Magnetic markers are applied to the web and detected by magnetic sensors, eliminating the need for mechanical gripping components that subject the web to stress and require complex actuation mechanisms.
Solution Approach 2:
The patent introduces magnetic markers as an intermediary between the web and the positioning system. These markers serve as a mediator that carries position information without requiring direct mechanical interaction between the positioning system and the web, thereby reducing complexity and material stress.
2Manufacturing precision
If a gripping member is used to adjust the web position, then alignment precision is improved, but material stress increases
Solution Approach 1:
The patent replaces mechanical gripping and adjustment mechanisms with a magnetic detection and control system. Magnetic sensors detect the position of magnetic markers on the web, and motors adjust the web position based on sensor feedback, eliminating mechanical stress on the web material.
Solution Approach 2:
The magnetic markers on the web essentially perform the positioning function themselves by providing detectable position information to the magnetic sensors, eliminating the need for external mechanical gripping members that would stress the material.
3Device complexity
If magnetic markers and sensors are used for positioning, then device complexity is reduced, but measurement capability must be maintained
Solution Approach 1:
The patent substitutes mechanical measurement systems with magnetic field-based measurement. Magnetic sensors detect the position of magnetic markers through magnetic field interactions, providing precise position detection without mechanical contact or complex mechanical measurement mechanisms.
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
The device effectively aligns pre-laminated holes with molding stations, reducing material stress and component complexity, while ensuring precise positioning of opening devices, thereby enhancing packaging efficiency and minimizing material damage.
Implementation Method 1
A device that uses magnetic markers aligned with pre-laminated holes to detect their positions
Data Source
AI summary
A device for feeding a web of a packaging material along a path and towards an application station; wherein the packaging material comprises a plurality of pre-laminated holes at which application station applies respective opening devices. The device comprises an advancing mechanism for advancing the web along a first direction parallel to path; a sensor for generating a plurality of measure signals associated to the positions of pre-laminated holes; and a first motor controllable on the basis of measure signals. The first motor is operatively connected to the advancing mechanism for moving the advancing mechanism along a second direction transversal to path.