Magnetic Fixing Device with Self-Indicating Resin Layer
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Solution Overview
Problem
In injection molding machines, operators face difficulty in determining the adsorption or non-adsorption state of magnetic force generation mechanisms without relying on the operation panel and control unit, especially when these units are shared or disconnected.
Innovation Solution
A magnetic fixing device with a clamping plate equipped with magnetic force generation mechanisms and an operation state indication mechanism, which provides visual indicators on the clamping plate to show whether the mechanisms are in an adsorption or non-adsorption state, using a combination of Alnico magnets, coils, and movable indication members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the operation panel and control unit are shared or disconnected, then cost is reduced and versatility is improved, but the ease of operation deteriorates because operators cannot easily determine the adsorption state
Solution Approach 1:
The magnetic fixing device provides self-service by including self-indicating means (transparent resin layer with different refraction rates) that automatically show the adsorption state without requiring external control panels or operation units. The system serves itself by visually indicating its own state through optical properties of the resin layer.
Solution Approach 2:
The invention uses optical property changes in the transparent resin layer to indicate different operational states. When the resin layer is in contact with the magnetic fixing mechanism, its optical properties (refraction rate) change, causing visible differences that allow operators to determine the adsorption state through visual observation rather than requiring control panel interfaces.
2Device complexity
If only the operation panel provides state indication, then device complexity is reduced, but the ease of operation worsens because operators must rely on disconnected control units
Solution Approach 1:
The indication system serves itself by using the inherent optical properties of the transparent resin layer to automatically indicate the operational state. The resin layer's refraction characteristics change based on its contact state with the magnetic fixing mechanism, providing self-indication without requiring external control panels, operation units, or complex electronic indication systems.
Solution Approach 2:
The invention employs optical property changes (refraction rate variations) in the transparent resin layer to visually indicate different operational states. These optical changes create visible differences that allow operators to determine whether the magnetic fixing mechanism is in adsorption or non-adsorption state through direct visual observation, eliminating the need for complex electronic indication systems.
3Adaptability or versatility
If the operation panel is disconnected from the magnetic fixing device, then adaptability is improved by allowing independent operation, but loss of information occurs as operators cannot know the adsorption state
Solution Approach 1:
The magnetic fixing device provides self-service by incorporating self-indicating means that automatically display the adsorption state through the optical properties of the transparent resin layer. This eliminates information loss by providing autonomous visual indication that does not depend on connected control panels or operation units, allowing independent operation while maintaining full state visibility.
Solution Approach 2:
The invention uses changes in optical properties (refraction rate) of the transparent resin layer to visually encode the adsorption state information. When the resin layer contacts the magnetic fixing mechanism, its refraction characteristics change, creating visible differences that preserve and communicate state information independently of any control panel connections.
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
Enables easy identification of the magnetic force generation mechanisms' state near the clamping plate, even when the operation panel and control unit are disconnected, enhancing operational safety and efficiency.
Implementation Method 1
a first Alnico magnet provided on a back of the magnetic material member, and a first coil for switching a polarity of the first Alnico magnet
Implementation Method 2
magnetic force generation mechanisms installed in the clamping plate for fixing the clamping object to the fixing surface by magnetic force
Data Source
AI summary
The magnetic fixing device comprises a clamping plate having a fixing surface to which a clamping object is fixed and plural magnetic force generation mechanisms. The magnetic force generation mechanisms each comprise a magnetic material member facing the fixing surface, plural permanent magnets arranged around the outer periphery of the magnetic material member, a first Alnico magnet placed on the back of the magnetic material member, and a first coil for switching the polarity of the first Alnico magnet, and can be switched between the absorption state in which the clamping object is adsorbed and the non-absorption state in which the clamping object is not adsorbed. An operation state indication mechanism capable of presenting an indicator indicating that the plural magnetic force generation mechanisms are in the absorption state or in the non-absorption state is provided on the fixing surface or outer periphery of the clamping plate.