Quick-Change Cartridge Assembly for Flexible Can End Conversion

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Solution Overview

Problem

Existing conversion presses for forming can ends with tabs lack an efficient method for exchanging cartridge assemblies, leading to increased downtime and labor costs due to the complex process of removing and installing different cartridge configurations.

Innovation Solution

A conversion press with a quick-change cartridge assembly system that includes a frame, a ram, and a cartridge assembly with a transfer belt, forming stations, and a tab stake station, allowing for easy removal and installation of cartridge assemblies via magnetic or mechanical fasteners, and a locational guide device for precise alignment, enabling rapid switching between different output types and volumes of can ends.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If traditional conversion presses use fixed or permanently mounted cartridge assemblies, then structural stability is maintained, but device complexity increases and operational flexibility decreases

Engineering Contradiction:

Improveflexibility to produce various types and volumes of can endsVSAvoidcomplexity of cartridge assembly exchange process

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The conversion press is divided into modular cartridge assemblies that can be independently removed and replaced. Each cartridge assembly contains specific forming stations and transfer belts for particular can end configurations, allowing the system to be segmented into interchangeable functional units that simplify exchange operations.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The cartridge assemblies are designed with universal mounting interfaces and standardized dimensions that allow them to be interchangeably installed in the same press position. This multi-functionality enables a single press to handle multiple can end types through cartridge replacement rather than requiring dedicated equipment for each product variant.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Ease of operation

If cartridge assemblies are designed for quick exchange using magnetic or mechanical fasteners, then ease of operation improves and downtime reduces, but device complexity increases

Engineering Contradiction:

Improveease of cartridge assembly removal and installationVSAvoidcomplexity of fastening and alignment mechanisms

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

Traditional mechanical fastening systems are replaced with magnetic fasteners that provide secure attachment during operation but allow for tool-free removal. This substitution eliminates complex bolts and fastening procedures while maintaining adequate holding strength during press operation.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

Alignment guides and定位 features serve as intermediary elements that facilitate precise positioning of cartridge assemblies during exchange. These guides mediate between the cartridge and press structure, ensuring proper alignment without requiring complex adjustment mechanisms or skilled operator intervention.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Adaptability or versatility

If multiple cartridge assemblies are stored for different can end configurations, then adaptability improves, but loss of time for exchange increases

Engineering Contradiction:

Improveability to produce different types and volumes of can endsVSAvoiddowntime during cartridge assembly exchange

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

Multiple cartridge assemblies are pre-positioned in ready-to-install locations around the press, with alignment features already engaged. This preliminary positioning allows operators to quickly swap cartridges without requiring complex handling or precise alignment procedures during the exchange process.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The storage and exchange system merges multiple cartridge holding positions into an integrated framework that surrounds the press. This combined structure allows simultaneous access to multiple cartridges and enables rapid selection and installation of the appropriate cartridge configuration.

Inventive Principle:

Principle #5Merging (Combining)

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 system significantly reduces downtime and labor costs by allowing for quick and efficient exchange of cartridge assemblies, enabling the press to produce various types and volumes of can ends with tabs, improving operational efficiency and flexibility.

Implementation Method 1

The cartridge assembly may be held to the press using magnetic or mechanical fasteners

Methodology Applied

Scientific EffectMagnetism: Magnetism

Data Source

PatentUS20240359228A1Conversion press for can ends

Publication Date: 2024.10.31 ALFONS HAAR INC

AI summary

A quick-change cartridge assembly for a conversion press includes a downstacker assembly having at least one can shell delivery apparatus for delivering can shells during use of a conversion press incorporating the quick-change cartridge assembly; one or more forming stations; a tab stake station; and a transfer belt. The transfer belt defines at least one active forming lane for conveying the can shells from the at least one can shell delivery apparatus to the one or more forming stations and the tab stake station during use of the conversion press incorporating the quick-change cartridge assembly.