Cap Tightening Mechanism with Magnetic Torque Control

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Solution Overview

Problem

Existing capping equipment for threaded caps is complex, expensive, and space-intensive, making it difficult for smaller production facilities to implement effectively in production lines due to the complexity and size of the machinery required for accurate and efficient cap tightening.

Innovation Solution

A mechanism comprising a first and second member with a resistance mechanism using magnets and serrated cap engaging portions to adjust torque and securely tighten partially threaded caps on containers moving along a production line, allowing for adjustable resistance and efficient cap engagement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If traditional screw tightener units with multiple individual tightening mechanisms are used, then cap tightening accuracy and productivity are improved, but device complexity and space occupation increase significantly

Engineering Contradiction:

Improvecap tightening efficiencyVSAvoidcapping equipment complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent combines multiple individual tightening mechanisms into a single integrated mechanism where a first member with multiple cap-engaging portions simultaneously handles multiple containers. This merging approach maintains the productivity of processing multiple containers while reducing device complexity and space requirements compared to traditional separate mechanisms arranged in large turntables.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The first member is designed as a universal component that can engage and tighten caps on multiple containers simultaneously through its plurality of cap-engaging portions. This multi-functional design allows a single mechanism to perform the work of multiple individual mechanisms, improving productivity without proportionally increasing device complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Productivity

If traditional large capping units accommodating multiple containers are used, then productivity is improved, but space occupation and cost increase

Engineering Contradiction:

Improvecontainers processed per timeVSAvoidproduction line space

Core Design Contradiction:

ProductivityVSArea of stationary object

Solution Approach 1:

The mechanism nests multiple cap-engaging portions on the first member in a compact arrangement, allowing multiple containers to be processed within a smaller footprint. The concentric or radially arranged cap-engaging portions enable simultaneous processing of multiple containers without requiring the large spread-out layout of traditional turntable units.

Inventive Principle:

Principle #7Nested doll (Nesting)

3Manufacturing precision

If adjustable torque control is implemented for accurate cap tightening, then manufacturing precision is improved, but device complexity increases

Engineering Contradiction:

Improvecap tightening torque accuracyVSAvoidresistance control mechanism complexity

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The mechanism uses dynamic magnetic resistance where the resistance to rotation varies based on the alignment between magnetic members on the first member and second member. As the second member rotates, the magnetic attraction and repulsion forces naturally provide torque control without complex mechanical resistance mechanisms, achieving precise cap tightening through dynamic electromagnetic interactions.

Inventive Principle:

Principle #15Dynamics

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 solution provides a cost-effective and space-efficient method for tightening threaded caps, enabling smaller production facilities to operate efficiently by ensuring accurate cap tightening with adjustable torque and reduced equipment size.

Implementation Method 1

The resistance mechanism may comprise a first set of magnets fixed with respect to the first end and a second set of magnets fixed with respect to the second end

Methodology Applied

Scientific EffectMagnetic attraction: Magnetism

Implementation Method 2

Each of the plurality of cap engaging portions may comprise a number of serrations

Methodology Applied

Scientific EffectFriction: Friction

Data Source

PatentUS8291681B2Cap tightening mechanism and capping system and method incorporating same

Publication Date: 2012.10.23 SILGAN IPEC CORP

AI summary

A mechanism for tightening a partially threaded cap on a container passing along a production line. The mechanism includes a first member having a first end and a second end. The first end being structured to be coupled at or near the production line and the second end being rotatable with respect to the first end. The mechanism further including a second member coupled to the second end of the first member and rotatable therewith. The second member having a plurality of cap engaging portions, each of the cap engaging portions being structured to engage the partially threaded cap on a container passing along the production line in a manner that tightens the partially threaded cap.