Electromechanical Vertical Shears With Pulley-Adjusted Cutting Angles
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Solution Overview
Problem
Existing vertical cutting shears, whether electric or hydraulic, face limitations such as inability to change cutting angles, inefficient energy use, excessive noise, and environmental impact due to large mass requirements and hydraulic systems, which affect cutting quality and operational efficiency.
Innovation Solution
An electromechanical vertical cutting shear system incorporating an electric servomotor, gear reducer, pulley system, and guillotine retraction mechanism, allowing for adjustable cutting angles and reduced energy consumption, with a pulley system that enables efficient cutting of various sheet thicknesses and materials while minimizing noise and environmental impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If hydraulic means are used to adjust cutting angle and knife angle, then adaptability to different materials is improved, but uncontrollable force on cutting blades reduces cutting quality
Solution Approach 1:
The patent replaces the hydraulic system with an electromechanical system consisting of a servomotor, gear reducer, and pulley system. This substitution eliminates the uncontrollable force issue inherent in hydraulic systems while maintaining the ability to adjust cutting parameters through precise mechanical control of the pulley positions and motion transmission means.
Solution Approach 2:
The patent introduces motion transmission means as an intermediary between the servomotor and the guillotine, and uses pulleys as intermediaries to adjust the angle between knives and cutting angle. These intermediaries provide controlled mechanical advantage and precise positioning, replacing the direct hydraulic force application that caused quality issues.
2Use of energy by moving object
If electric servomotor with pulley system is used, then energy consumption is reduced, but device complexity increases
Solution Approach 1:
The patent employs a dynamic pulley system where the position of pulleys can be adjusted to change the mechanical advantage ratio. This allows the system to adapt to different cutting requirements and material thicknesses, optimizing energy consumption for each specific task while managing the complexity through controlled adjustability rather than fixed rigid structures.
Solution Approach 2:
The patent divides the motion transmission function into separate modular components: servomotor, gear reducer, multiple pulleys, and motion transmission means. This segmentation allows each component to be optimized independently and facilitates easier maintenance and adjustment, managing overall system complexity through modularity.
3Power
If large mass rotating element is used for cutting, then cutting power is sufficient, but production difficulty and energy waste increase
Solution Approach 1:
The patent replaces the traditional large-mass rotating inertia-based cutting mechanism with an electromechanical system using a servomotor and pulley system. This substitution generates sufficient cutting power through mechanical advantage multiplication rather than relying on large rotating mass, significantly reducing production difficulty and energy waste associated with accelerating and decelerating heavy components.
Solution Approach 2:
The servomotor operates in periodic cycles, providing power only during the actual cutting motion rather than continuously running. This periodic action eliminates the need for large inertia to maintain motion between cuts, reducing both the mass required and the energy consumption associated with continuous operation of heavy rotating elements.
4Reliability
If electric motor operates continuously during standby time, then readiness for cutting is maintained, but energy consumption and noise increase
Solution Approach 1:
The servomotor operates periodically only when cutting is required, rather than running continuously during standby time. The system maintains readiness through rapid acceleration capability of the servomotor and gear reducer, eliminating the need for continuous operation. This significantly reduces energy consumption during standby while maintaining operational reliability.
Solution Approach 2:
The system uses the inherent mechanical properties of the gear reducer and pulley system to maintain readiness without continuous power input. The mechanical components can quickly transition from stationary to cutting speed, allowing the system to 'service itself' by being ready on demand rather than requiring continuous operation to maintain readiness state.
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 enables efficient cutting of different materials with reduced energy consumption and noise, improved cutting quality, and lower maintenance costs, while being more environmentally friendly and cost-effective, with the ability to continue operation even if a pulley fails, ensuring continuous cutting until replacement.
Implementation Method 1
the power it generates is multiplied by the multiple pulley systems
Implementation Method 2
An electromechanical vertical cutting shear system incorporating an electric servomotor
Data Source
AI summary
The electromechanical vertical cutting shear (1) comprises an electric servomotor (4) combined with a gear reducer (5) at least one shaft (6) bearing one or more spools (7), at least one motion transmission means (8) which is connected to a guillotine (11), and a cutting system comprising at least a pair of knives (12). The electromechanical shear (1) comprises a pulley system (9) for every motion transmission means (8).