Vacuum Transfer Device for Continuous Part Handling
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Solution Overview
Problem
Current vacuum plasma treatment processes are inefficient for continuous high-speed processing of objects due to batch-based operations, complex equipment requirements, and difficulties in transferring objects between vacuum zones, limiting the ability to treat a large quantity of parts quickly and continuously.
Innovation Solution
A vacuum treatment installation with a transfer device that includes a frame, a housing with a movable transfer member, and insulation between atmospheric and vacuum zones, allowing for continuous object supply and evacuation, using a conveyor system and unstacking/stacking mechanisms to manage parts efficiently within the vacuum chamber.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If batch-based object placement is used in vacuum chambers, then vacuum integrity is maintained, but processing time increases and productivity decreases
Solution Approach 1:
The vacuum chamber is segmented into multiple zones (first vacuum zone, second vacuum zone, intermediate zone) that can be independently evacuated and pressurized. This allows continuous processing by having one zone under vacuum while another is being loaded or unloaded, eliminating batch interruptions and maintaining vacuum integrity simultaneously.
Solution Approach 2:
Objects are pre-positioned in the intermediate zone which can be rapidly evacuated when needed. This preliminary preparation allows objects to be quickly transferred to the vacuum treatment zone without breaking vacuum, thereby increasing productivity while maintaining vacuum integrity.
2Reliability
If airlock systems with vacuum manipulators are used for transfer, then vacuum maintenance is achieved, but device complexity increases
Solution Approach 1:
The complex vacuum manipulator system is extracted and replaced with a simpler gravity-based transfer mechanism. Objects are transferred using gravity flow between zones of different pressures, eliminating the need for complex vacuum manipulators while maintaining vacuum integrity through the multi-zone design.
Solution Approach 2:
The intermediate zone acts as a mediator between the atmospheric loading zone and the vacuum treatment zone. It provides a buffer that can be rapidly evacuated, allowing smooth transition of objects without requiring complex manipulation systems, thus simplifying the overall device while maintaining vacuum.
3Productivity
If continuous high-rate transfer is implemented, then productivity increases, but transfer device complexity and malfunction risk increase
Solution Approach 1:
The transfer system uses gravity as the primary driving force, allowing objects to move automatically from the intermediate zone to the vacuum zone without complex mechanical actuators. This self-service mechanism enables continuous high-rate transfer while minimizing mechanical complexity and potential failure points.
Solution Approach 2:
The system dynamically switches between different operational modes by controlling the pressure states of different zones. The intermediate zone can be rapidly evacuated and pressurized as needed, enabling flexible and continuous transfer operations without complex mechanical reconfiguration, thus achieving high productivity with simplified mechanics.
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
Enables continuous and efficient supply of a large number of parts to the vacuum treatment zone, reducing the risk of malfunction and allowing for quick vacuum operation, thus overcoming the limitations of existing technologies by simplifying the mechanical structure and reducing downtime.
Implementation Method 1
a transfer element, mounted in the housing in a movable manner relative to the frame by being mounted to rotate within the housing
Implementation Method 2
means of insulation between the intermediate region and each opening
Implementation Method 3
a main vacuum chamber equipped with processing means... an intermediate region placed either under vacuum or at atmospheric pressure
Data Source
Figure 1~2
Figure 3~4b
Figure 4c~4f
AI summary
This facility comprises a main space under vacuum, at least one device for transferring objects between a zone at atmospheric pressure and a zone under vacuum, means (30) for unstacking/stacking objects, means for conveying objects and support elements (24, 25) for supporting each object, these being secured to the conveying means. Each transfer device comprises a frame and a transfer member, provided with at least one cell (C1-C4) that accepts at least one object that is to be transferred. The frame defines a first opening in communication with the zone at atmospheric pressure, a second opening in communication with the zone under vacuum, and an intermediate region intended to be placed either under vacuum or at atmospheric pressure.