Vibrating Table With Scissor Mechanisms for Constant Amplitude
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Solution Overview
Problem
Existing vibrating tables with piezoelectric, electromechanical, or pneumatic drives face challenges in maintaining constant amplitude and frequency of vibrations regardless of loading, leading to inefficient separation and transport of bulk material components.
Innovation Solution
A vibrating table with four scissor mechanisms, each having a first and second shank with nodal points attached to the tabletop, allowing independent movement of the shanks to generate consistent vibrations with both vertical and horizontal components, enabling targeted motion and adaptation of amplitude based on loading conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If piezoelectric, electromechanical, or pneumatic drives are used to generate vibrations, then the drives can operate independently and provide vertical vibration components, but the amplitude and frequency of vibrations vary with loading conditions
Solution Approach 1:
The drive system is segmented into four independent scissor mechanisms, each capable of generating vibrations independently. This segmentation allows each mechanism to operate autonomously while contributing to the overall vibration pattern, resolving the contradiction between independent operation and consistent vibration characteristics.
Solution Approach 2:
The scissor mechanisms employ movable shanks that can dynamically adjust their position and orientation. This dynamic capability allows the mechanisms to maintain constant vibration amplitude and frequency regardless of loading conditions, as the geometry of the scissor mechanisms adapts to compensate for load variations.
2Force
If the depth of penetration of drive parts increases with loading to maintain vibration force, then stronger drives are required, but this increases device complexity and energy consumption
Solution Approach 1:
The scissor mechanisms introduce a geometric dimension to the drive system, utilizing the angular relationship between shanks to amplify vibration force. Instead of increasing drive strength linearly with load, the mechanism uses geometric multiplication through the scissor configuration, reducing the required drive strength while maintaining effective vibration force.
Solution Approach 2:
The system changes the geometric parameters of the scissor mechanisms (shink angles, lengths, and positions) to optimize vibration force output. By adjusting these parameters, the mechanism can maintain constant vibration amplitude and frequency across varying load conditions without requiring proportionally stronger drives.
3Force
If hydraulic or pneumatic drives are used to provide strong vibrations, then the drives can overcome loading variations, but the system becomes technically elaborate and requires liquid-tight or gas-tight configuration
Solution Approach 1:
The patent replaces complex hydraulic or pneumatic drive systems with a mechanically simpler scissor mechanism-based system. The scissor mechanisms provide the necessary vibration force through pure mechanical advantage and geometric configuration, eliminating the need for fluid systems and their associated sealing requirements while maintaining the ability to overcome loading variations.
4Adaptability or versatility
If three mutually perpendicular drives are used to generate vibrations, then independent control in multiple directions is achieved, but the loading on the table must be specified really precisely
Solution Approach 1:
Each scissor mechanism is designed to perform multiple functions: generating vertical vibrations, providing horizontal vibration components through shink movement, and adapting to various loading conditions. This multi-functionality reduces the need for precise loading specifications while maintaining versatile vibration control capabilities.
Solution Approach 2:
The scissor mechanisms dynamically adapt their geometry in response to loading conditions, allowing the system to maintain effective vibration control without requiring precise pre-specification of loads. The mechanisms self-adjust to accommodate varying loads while preserving multi-directional control capabilities.
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 ensures consistent and efficient separation and transport of bulk material components by maintaining constant amplitude and frequency of vibrations, regardless of loading, facilitating precise and efficient movement of parts on the table.
Implementation Method 1
generate the vibration by three mutually perpendicular piezoelectric, electromechanical, pneumatic or hydraulic drives which act on the tabletop independently of one another
Data Source
AI summary
The invention relates to a vibration table (1) comprising a table plate (2) and a drive (3), wherein the drive (3) comprises four scissor mechanisms (41, 42, 43, 44), each having a first (41.1, 42.1, 43.1, 44.1) and a second limb (41.2, 42.2, 43.2 and 44.2) and a hub (41.3, 42.3, 43.3, 44.3), wherein the hubs (41.3, 42.3, 43.3, 44.3) are fastened to the table plate (2) and the first limb (41.1, 42.1, 43.1, 44.1) can be moved independently of the second limb (41.2, 42.2, 43.2, 44.2).