Electric Scissors With Bar Holding and Directional Support
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Solution Overview
Problem
Existing electric scissors struggle to effectively cut reinforcing bars without scattering them, due to the inability to suppress the bars' movement caused by the cutting load and reactive forces, leading to operational inefficiencies and safety concerns.
Innovation Solution
The electric scissors incorporate a configuration with at least one movable blade, a drive unit for opening and closing the blades, a holding part to secure the cut object, and a support part to regulate the direction of the to-be-cut object, preventing tilting and scattering during cutting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a pair of movable blades is used to cut reinforcing bars, then cutting capability is achieved, but the bars scatter due to inability to suppress movement caused by cutting load and reactive forces
Solution Approach 1:
The tool is divided into functionally independent components: cutting blades for cutting, holding parts for gripping the cut ends, and support parts for regulating direction. This segmentation allows each component to perform its specific function without interfering with others, effectively preventing scattering while maintaining cutting capability.
Solution Approach 2:
Holding parts and support parts act as intermediary elements between the cutting blades and the workpiece. These intermediaries suppress the harmful movement of cut bars caused by cutting loads and reactive forces, preventing scattering without affecting the cutting action.
2Productivity
If higher cutting force is applied to cut thick round bars, then cutting capability is improved, but the scissors tilt relative to the round bar requiring additional operator effort
Solution Approach 1:
Support parts serve as intermediary elements that regulate the direction of the round bar during cutting. By constraining the bar's movement, these support parts prevent tilting of the scissors, allowing high cutting forces to be applied without increasing operator effort to maintain alignment.
Solution Approach 2:
The support parts automatically regulate the direction of the round bar through their structural design, without requiring additional operator intervention. The tool self-adjusts to maintain proper alignment during high-force cutting operations.
3Stability of the object's composition
If pressing members with torsion springs are used to hold the pipe, then tilting is prevented, but the tool size increases and operability deteriorates
Solution Approach 1:
The holding and support functions are segmented into separate, compact components integrated into the blade assembly. This segmentation allows anti-tilting capability to be achieved without requiring large, external pressing members, thereby maintaining compact tool size and good operability.
Solution Approach 2:
Instead of using large pressing members that extend outward, the support parts are designed to provide directional regulation within the existing structural dimensions of the tool. This dimensional optimization prevents tilting without increasing overall tool size.
Data Source
Figure 1~2
Figure 3~5
Figure 6~7
AI summary
Electric scissors 1A includes: at least one movable blade 2A having a blade portion 20A configured to cut a to-be-cut object S; a drive unit 5 configured to open and close the at least one movable blade; a holding part 3A configured to hold the to-be-cut object that is cut by the at least one movable blade; and a support part 4A configured to support 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.