Dark-Coated Metal Net for Automatic Machine Safety and Visibility
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Solution Overview
Problem
Existing protective elements for automatic machines are either costly and aesthetically unpleasing or compromise safety due to inadequate visibility and potential finger entrapment issues, depending on the size of openings in heat-sealed metal nets.
Innovation Solution
A protective element featuring a substantially rigid metal net with dark-colored wires of specific dimensions and composition, providing adequate shielding while allowing easy observation of the machine and preventing finger entrapment through a combination of wire thickness, material, and interlaced mesh design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If heat-sealed metal nets with small openings are used, then safety is improved by preventing finger entrapment, but visibility is worsened making it difficult for operators to observe the machine
Solution Approach 1:
The patent applies color changes by coating the metal wires with a dark color (black or dark gray) that creates optical contrast against the background. This allows the net to blend into the background when viewed from a distance, improving visibility for operators while maintaining the physical safety function of small openings
2Loss of information
If heat-sealed metal nets with large openings are used, then visibility is improved allowing easy observation of the machine, but safety is worsened as fingers can pass through the protective element
Solution Approach 1:
The dark color coating on the metal wires reduces visual prominence of the net structure, allowing operators to observe the machine more easily while the physical barrier function with appropriately sized openings maintains safety by preventing finger entrapment
3Loss of information
If transparent panels are used, then visibility and aesthetics are improved, but production costs are worsened due to high manufacturing expenses
Solution Approach 1:
The patent replaces expensive transparent panels with a cheaper alternative: heat-sealed metal nets coated with dark color. This solution achieves the required visibility and safety functions at lower production cost by using standard metal netting materials and simple coating processes
4Shape
If transparent panels are used, then aesthetics are improved, but production costs are worsened due to high manufacturing expenses
Solution Approach 1:
The patent achieves acceptable aesthetics through the dark color coating on metal nets, which creates a uniform, professional appearance while blending with industrial backgrounds. This approach is significantly more cost-effective than transparent panels while maintaining functional requirements
Data Source
Figure 1~2
Figure 3
AI summary
A protective element (1) for automatic machines (9) comprising a net (2), which is provided with a plurality of interlaced wires (3) of a dark color ranging from RAL:5003 to RAL:5004, from RAL:7016 to RAL:7022, from RAL:7024 to RAL:7026, from RAL:8019 to RAL:8022, from RAL:9004 to RAL:9005, or from RAL:9011 to RAL:9017; the wires (3) have a thickness from about 1.5 to about 2.5 mm and are arranged so as to define openings (4) with an area from about 64 mm2 to about 144 mm2.