Adjustable Capping Chuck Assembly for Inverted Cap Ejection
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Solution Overview
Problem
Existing capping chuck assemblies struggle with handling inverted caps, leading to reduced throughput due to the inability of ejector mechanisms to effectively remove caps in the wrong orientation, and face challenges with accommodating cap size variations due to tight tolerances and manufacturing inconsistencies.
Innovation Solution
A capping chuck assembly with a cap gripper featuring adjustable collet assemblies and peripheral ejector projections that can engage with the sidewall of upside-down caps and accommodate size variations through an adjustable gap, ensuring effective cap ejection and handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed-dimension single collet gripper is used, then the structure is simple, but tight tolerances are required and manufacturing inconsistencies cause problems
Solution Approach 1:
The collet is designed with adjustability, transforming it from a fixed-dimension static structure to a dynamic one that can be modified. The collet body includes adjustment features allowing the gripping diameter to be changed, enabling adaptation to different cap sizes and manufacturing variations without requiring tight tolerances on a single fixed dimension.
Solution Approach 2:
The invention changes the parameter of the collet's gripping diameter from a fixed value to an adjustable variable. This allows the system to accommodate variations in cap dimensions by modifying the collet's effective diameter, thereby resolving the contradiction between simple structure and manufacturing precision requirements.
2Device complexity
If a traditional axial ejector mechanism is used, then the structure is simple, but it cannot effectively eject inverted caps
Solution Approach 1:
The ejector mechanism is segmented into multiple functional components: a central axial ejector for normal caps and peripheral ejector projections positioned around the cap receiving opening. This segmentation allows different ejection strategies for different cap orientations - the axial ejector handles normally oriented caps while the peripheral projections handle inverted caps by engaging with the cap's outer sidewall.
Solution Approach 2:
The ejector system is designed with multi-functionality to handle both normally oriented and inverted caps. The combination of the central axial ejector and peripheral ejector projections creates a universal ejection mechanism that can effectively remove caps regardless of their orientation, eliminating the throughput impact caused by inverted caps.
3Manufacturing precision
If tight tolerances are specified for the collet, then manufacturing precision is improved, but manufacturing inconsistencies and wear still create problems
Solution Approach 1:
The collet is designed with adjustability, transforming it from a fixed-dimension static structure to a dynamic one that can be modified. The collet body includes adjustment features allowing the gripping diameter to be changed, enabling adaptation to different cap sizes and manufacturing variations without requiring tight tolerances on a single fixed dimension.
Solution Approach 2:
The invention changes the parameter of the collet's gripping diameter from a fixed value to an adjustable variable. This allows the system to accommodate variations in cap dimensions by modifying the collet's effective diameter, thereby resolving the contradiction between simple structure and manufacturing precision requirements.
Data Source
AI summary
A capping apparatus includes a capping chuck assembly having (i) one or more peripheral ejector projections to facilitate ejection of an upside down cap and/or (ii) a single collet style cap gripper with an adjustment assembly to facilitate handling of different cap sizes.