Turntable Mechanism for Stable Adsorption
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Solution Overview
Problem
Existing adsorption technologies using rotating air flows suffer from discontinuous and unstable negative pressure distributions due to speed gradients and secondary flow formations, leading to fluctuating suction forces and vibrations during workpiece adsorption.
Innovation Solution
A turntable mechanism featuring a flat plate driven by a rotating device to generate a continuous and stable fluid film between the plate and an adsorbed object, utilizing an ejector rod with a height adjustment device to maintain a consistent gap and prevent secondary flow, ensuring a stable adsorption force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If fan blades rotate to generate rotating air flow for adsorption, then workpieces can be adsorbed and moved, but the discontinuous rotating air flow causes speed gradients and periodic suction force fluctuations leading to serious vibration
Solution Approach 1:
The patent replaces the discontinuous rotating air flow generated by fan blades with a continuous linear air flow. The air flow generator creates a uniform linear flow field that continuously acts on the workpiece surface, eliminating the periodic fluctuations and speed gradients inherent in rotating flow systems. This continuous action ensures stable suction force without vibration.
Solution Approach 2:
The patent substitutes the mechanical rotating fan blade system with an air flow generator that produces linear flow. This replacement transitions from a mechanical rotation-based system to a controlled linear flow system, eliminating the inherent instability of rotating flows while maintaining the adsorption function.
2Reliability
If multiple surfaces form a closed space for non-contact adsorption, then workpieces can be held at a certain distance, but the complicated multi-interface flow easily forms secondary flows that weaken the rotating flow and reduce adsorption force
Solution Approach 1:
The patent extracts and eliminates the problematic rotating flow component that generates secondary flows. By using only linear air flow from the air flow generator, the system removes the source of secondary flow generation while maintaining the essential adsorption function through the linear flow's direct action on the workpiece surface.
Solution Approach 2:
The patent changes the flow field parameters from rotational velocity components to linear velocity components. The air flow generator produces a uniform linear flow with controlled velocity and direction, transforming the flow characteristics to eliminate secondary flows while maintaining effective adsorption pressure.
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 mechanism achieves a continuous and stable negative pressure distribution and suction force, reducing vibrations and preventing secondary flow, thereby enhancing the stability and consistency of the adsorption process.
Implementation Method 1
the flat plate rotates to generate a negative pressure between a lower surface of the flat plate and a surface of an adsorbed object
Implementation Method 2
the air is decelerated by the viscous effect of a stationary wall surface C of the housing 2′
Implementation Method 3
a front end of the ejector rod extends to the surface of the adsorbed object and is in contact with the surface of the object, so that a gap is kept between the lower surface of the flat plate and the surface of the adsorbed object
Data Source
AI summary
The present invention relates to a turntable mechanism, including a flat plate and a rotating device for driving the flat plate to rotate, where the flat plate rotates to generate a negative pressure between a lower surface of the flat plate and a surface of an adsorbed object, the flat plate and the adsorbed object adhere together by an adsorption force generated by the negative pressure, and in this case, a gap is kept between the lower surface of the flat plate and the surface of the adsorbed object. In the present invention, a continuous, consistent, and stable fluid film is formed between the turntable and the adsorbed object, and a secondary flow is not easily generated, thereby ensuring that the adsorption force between the rotating flat plate and the adsorbed object is more stable.