Electric Scissors Blade Structure to Prevent Rebar Tilting
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Solution Overview
Problem
Existing electric scissors struggle to cut reinforcing bars without scattering them due to the reactive force applied during cutting, requiring additional force to prevent tilting and increased tool size for stronger springs, which compromises operability.
Innovation Solution
The electric scissors incorporate a pair of movable blades with holding and support parts to regulate the direction of the reinforcing bar during cutting, using elastic members to hold the bar and metal support parts to prevent tilting, allowing for efficient cutting and post-cut object retention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If stronger torsion springs are used to cut round bars with large diameter, then the cutting capability is improved, but the tool size increases and operability deteriorates
Solution Approach 1:
The tool is divided into two functional parts: cutting blades for cutting the reinforcing bar and holding parts for gripping the bar. This segmentation allows the cutting blades to be optimized for strength while the holding parts handle the gripping function, resolving the contradiction between cutting capability and operability.
Solution Approach 2:
The holding parts act as intermediaries between the operator and the reinforcing bar. By providing dedicated holding parts that grip the bar, the operator can apply cutting force without directly holding the bar, improving operability while maintaining cutting capability.
2Force
If pressing members with strong urging force are provided to hold the pipe, then the holding capability is improved, but the tool size increases
Solution Approach 1:
The holding parts are merged with the cutting blades structure, forming an integrated unit. The holding parts are positioned at the tips of the cutting blades, combining the cutting and holding functions in a compact configuration, improving holding capability without significantly increasing tool size.
Solution Approach 2:
The cutting blades serve dual functions: cutting the reinforcing bar and providing holding parts to grip the bar. This multi-functionality reduces the need for separate pressing members, improving holding capability while maintaining compact tool size.
3Stability of the object's composition
If additional force is applied to prevent tilting during cutting, then the cutting stability is improved, but the ease of operation deteriorates
Solution Approach 1:
The holding parts provide preliminary gripping action on the reinforcing bar before and during cutting. By securing the bar with the holding parts, the bar is prevented from tilting or moving during cutting, improving cutting stability without requiring the operator to apply additional corrective force.
Solution Approach 2:
The holding parts automatically grip the reinforcing bar when the cutting blades close, providing self-stabilization. The bar is held firmly by the holding parts without requiring the operator to manually adjust or apply additional force to prevent tilting, improving both stability and ease of operation.
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 effectively suppresses the reinforcing bar from tilting and scattering during and after cutting, enhancing operability by maintaining control without the need for excessive force and reducing tool size, allowing for secure handling and disposal of cut bars.
Implementation Method 1
providing a cutting blade with a wire rod sandwiching member configured to hold the wire rod with an elastic force
Data Source
AI summary
Electric scissors includes at least one movable blade having a blade portion which cuts a to-be-cut object. A drive unit opens and closes the at least one movable blade, and a holding part holds the to-be-cut object that is cut by the at least one movable blade. A support part supports the to-be-cut object, which is cut by the at least one movable blade, while regulating a direction of the to-be-cut object.