Magnetic Coupling Decouples Hygienic Components in Packaging Transport

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Solution Overview

Problem

Conventional packaging devices in the food industry, particularly those using chain drives or belt drives, are susceptible to contamination, which is a concern when handling pasty or pourable goods, as they come into contact with transport rails and can introduce contaminants into the packaging process.

Innovation Solution

A packaging device that decouples hygienically relevant components from the transport system using magnetic coupling, allowing transport carriages to move independently along a transport rail without direct contact, creating a gap that acts as a mechanical barrier to prevent contamination, and utilizing a sterile unit with a housing that encloses the transport means to maintain hygiene.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If chain drives or belt drives are used as transport means, then robustness and low susceptibility to errors are improved, but contamination risk increases

Engineering Contradiction:

ImproverobustnessVSAvoidcontamination risk

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent replaces the mechanical contact-based chain drive or belt drive with a magnetic coupling system. The driver is magnetically coupled to the transport carriage without direct mechanical contact, eliminating the contamination source while maintaining reliable force transmission for moving packages through the packaging line.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces a magnetic field as an intermediary between the driver and the transport carriage. This magnetic coupling allows force transmission without physical contact, serving as a mediator that transfers motion while preventing contamination from reaching the aseptic zone.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Device complexity

If transport carriages directly contact transport rails, then simple mechanical coupling is achieved, but contamination of packages occurs

Engineering Contradiction:

Improvemechanical coupling simplicityVSAvoidpackage contamination

Core Design Contradiction:

Device complexityVSObject-affected harmful factors

Solution Approach 1:

The patent replaces direct mechanical contact between transport carriages and rails with magnetic coupling. The driver magnetically couples to the transport carriage, eliminating the need for direct rail contact and the associated contamination risk while maintaining effective force transmission.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The magnetic field acts as an intermediary that transmits force from the driver to the transport carriage without requiring direct mechanical contact. This eliminates the contamination pathway while preserving the functional coupling needed for transport.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Productivity

If carriers are moved along the entire transport rail, then continuous transport is achieved, but contaminants are carried into the aseptic zone

Engineering Contradiction:

Improvecontinuous transportVSAvoidcontaminant introduction

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent extracts the driver from the aseptic zone by positioning it outside the sterile area. The driver magnetically couples to the transport carriage at the boundary, allowing continuous transport functionality while removing the contamination source from the protected zone.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The magnetic coupling serves as an intermediary mechanism that allows the driver operating outside the aseptic zone to propel transport carriages through the sterile area without direct contact, maintaining continuous transport while preventing contaminant introduction.

Inventive Principle:

Principle #24Intermediary (Mediator)

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

This solution effectively reduces contamination risks by minimizing the exposure of transport components to the aseptic zone, ensuring cleaner operation and maintaining hygiene standards during the packaging process.

Implementation Method 1

The transport carriage and the driver are magnetically coupled to one another in order to be able to move the transport carriage along the transport rail with the aid of the driver without direct contact

Methodology Applied

Scientific EffectMagnetic coupling: Magnetism

Data Source

PatentEP3732107B1Packaging device and method for operating the packaging device

Publication Date: 2023.02.08 SIG COMBIBLOC SERVICES AG

Figure 1a~1b
Figure 1c
Figure 2

AI summary

The invention relates to a packaging device, in particular a filling machine, comprising at least one transport rail (2) and at least two transport slides (4) which can be moved along the transport rail and which are arranged on the transport rail. The transport rail and the transport slides are coupled together in an electromotive manner, and the transport slides are designed to transport at least one package (22) and are moved at least along a production region of the transport rail. The invention is characterized in that the transport slide (4) has a permanent magnet (6) which is magnetically coupled to the transport rail (2) and is magnetically coupled to a driver (8) that is mechanically separate from the transport slide. The invention additionally relates to a method for operating a packaging device.