Vacuum Starwheel Quick-Change Assembly for Faster Can Size Changeover
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Solution Overview
Problem
Necking machines require frequent adjustments and replacements of starwheels and guiderails to accommodate different can body sizes, which is time-consuming and results in lost fasteners, necessitating a quick-change vacuum starwheel assembly that eliminates the need for numerous couplings and ensures retained couplings are not lost.
Innovation Solution
A quick-change vacuum starwheel assembly with a quick-change height adjustment assembly and mounting assembly that uses a limited number of retained couplings, allowing for axial movement of the starwheel without losing or misplacing them, and incorporates a telescoping vacuum conduit and lateral scratch-resistant seal to maintain efficient suction and prevent damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If numerous couplings and fasteners are used to couple the starwheel to the rotating shaft and vacuum assembly, then the connection is secure and reliable, but the adjustment and replacement process becomes time-consuming and fasteners are lost
Solution Approach 1:
The starwheel assembly is divided into separable components (starwheel body, vacuum assembly, guiderails) that can be independently adjusted or replaced. This segmentation allows quick changeout without dismantling the entire assembly, reducing adjustment time while maintaining connection reliability through dedicated coupling mechanisms for each segment.
Solution Approach 2:
The design incorporates pre-positioned coupling points and retained fasteners that are prepared in advance. The coupling mechanisms are designed to engage quickly without requiring sequential assembly of multiple fasteners, and retained fasteners prevent loss during the preliminary preparation for adjustment or replacement.
2Adaptability or versatility
If numerous couplings and fasteners are used to accommodate different can body sizes, then the adjustment capability is comprehensive, but the process becomes complex and fasteners are lost
Solution Approach 1:
The starwheel assembly incorporates adjustable elements that can be dynamically reconfigured for different can body sizes. The height adjustment mechanism allows the starwheel to be quickly repositioned to accommodate varying can dimensions, providing adaptability without requiring complete disassembly or complex recoupling of multiple fasteners.
Solution Approach 2:
The coupling mechanisms are designed with universal retention features that work across different can body sizes. The retained fasteners and coupling points serve multiple functions: securing the starwheel in various positions, preventing fastener loss, and enabling quick replacement. This multi-functionality reduces the number of different coupling types needed, simplifying the overall system while maintaining versatility.
3Adaptability or versatility
If the vacuum assembly is recoupled to a different starwheel, then the system can process different can radii, but numerous couplings must be removed and reinstalled
Solution Approach 1:
The vacuum assembly is designed as a separate, self-contained module with its own coupling interface. This segmentation allows the vacuum assembly to be independently coupled to different starwheels without requiring disassembly of the entire system. The dedicated coupling mechanism simplifies the connection process, making it easier to adapt to different can radii by simply replacing the starwheel while retaining the vacuum assembly.
4Loss of substance
If retained couplings are used to prevent fastener loss, then fasteners are not lost during adjustment, but the coupling mechanism may become more complex
Solution Approach 1:
The retained fasteners are designed to be self-retaining, automatically securing themselves to the starwheel or frame assembly during the coupling process. This self-service feature prevents fastener loss without requiring additional complex retention mechanisms or multiple operator actions, maintaining simplicity while ensuring fasteners are not lost during adjustment or replacement operations.
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
Facilitates rapid adjustment and replacement of starwheels without losing or misplacing fasteners, ensuring efficient operation and reducing downtime, while maintaining effective vacuum suction and preventing seal damage.
Implementation Method 1
Each pocket is in fluid communication with a vacuum assembly that reduces the air pressure in/at the pocket. In this configuration, a can body is disposed in a pocket and held in the pocket by the suction generated by the vacuum assembly.
Data Source
AI summary
A quick-change vacuum starwheel assembly including at least one of a quick-change height adjustment assembly or a quick-change vacuum starwheel mounting assembly.