Protective Slide Position Sensing With Motion-Amplified Magnetic Detection
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Solution Overview
Problem
Existing packaging machines in the industry face challenges in ensuring operator safety by preventing accidental access to the working space while requiring large installation space and complex sensor units for reliable detection of protective slide positions.
Innovation Solution
A protective slide assembly with a movable protective element and sensor elements that utilize a differential motion amplitude between the protective element and a first sensor element, forming a magnetic circuit to ensure precise detection of the protective position, reducing the overall size and complexity of the sensor system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complex sensor units are used to reliably detect protective slide position and small deviations, then operator protection reliability is improved, but installation space requirement increases
Solution Approach 1:
The patent replaces complex mechanical sensor units with a magnetic field-based detection system. A first magnetic sensor detects the position of a magnet attached to the protective slide, while a second magnetic sensor verifies the exact protection position. This substitution of mechanical sensors with magnetic sensors reduces installation space while maintaining high reliability in detecting the protective slide position and small deviations from the protection position.
Solution Approach 2:
The patent introduces a magnet as an intermediary element attached to the protective slide. This magnet serves as a mediator that transmits position information to the magnetic sensors without requiring direct mechanical contact or complex sensor mechanisms. The magnet enables reliable position detection while simplifying the sensor system and reducing installation space requirements.
2Measurement precision
If the first sensor element has greater amplitude of motion than the protective element, then measurement precision of protection position is improved, but device complexity increases
Solution Approach 1:
The patent employs dynamic motion amplification where the first sensor element is designed to move with a greater amplitude than the protective element itself. This dynamic configuration allows the magnetic sensor to detect position changes with higher precision by amplifying the motion signal, while the overall system remains relatively simple in structure.
Solution Approach 2:
The patent uses a lever mechanism with a counterweight to amplify the motion of the first sensor element. The lever is balanced such that small movements of the protective element result in larger movements of the first sensor element, thereby amplifying the detection signal without requiring complex sensing electronics or 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 solution provides reliable operator protection with reduced installation space and simplified sensor design, allowing for continuous material processing without risking operator injury.
Implementation Method 1
the first sensor element and the second sensor element are configured to come into contact in the protection position of the protective element and to output a signal that is indicative of the contact
Data Source
AI summary
A protective slide assembly for a work machine for processing packaging material includes an assembly element for connecting the protective slide assembly to the work machine, a protective element arranged to be movable relative to the assembly element, a first sensor element, and a second sensor element fixedly arranged at the assembly element. The protective element can be moved relative to the assembly element between a release position and a protection position, and the first sensor element and the second sensor element are configured to come into contact in the protection position of the protective element and to output a signal that is indicative of the contact. The first sensor element is arranged such that it can be moved along with the protective element and an amplitude of motion of the first sensor element is greater than an amplitude of motion of the protective element.