Magnetic Clutch Head for Aseptic Cap Torque Adjustment
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Solution Overview
Problem
Existing heads for applying threaded caps in automatic machines fail to ensure aseptic conditions and efficient torque adjustment without exposing potentially contaminated areas, and they are not easily washable or maintainable.
Innovation Solution
A head with a magnetic clutch isolated from the external environment using a dual-magnet system with adjustable axial distance and an external thread for torque adjustment, combined with elastic compression means for easy spring replacement, ensuring liquid-tight sealing and easy maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the magnetic clutch is isolated in a liquid-tight way from the external environment to ensure aseptic conditions, then the washability and hygiene are improved, but the adjustment of torque becomes more difficult as it requires exposing potentially contaminated areas
Solution Approach 1:
The adjustment mechanism is nested within the sealed magnetic clutch assembly. The adjustment ring rotates within the sealed housing, and through the magnetic coupling between the first and second magnets, the axial distance between magnets can be adjusted without breaking the liquid-tight seal. This allows torque adjustment while maintaining aseptic conditions.
Solution Approach 2:
The magnetic field acts as an intermediary to transmit the adjustment motion from the adjustment ring to the second magnet. By rotating the adjustment ring, the axial position of the second magnet is changed through magnetic interaction, allowing torque adjustment without direct mechanical connection that would compromise the seal.
2Manufacturing precision
If the axial distance between the two magnets is reduced to limit maximum torque, then the torque control is improved, but the structural complexity increases due to the need for precise adjustment mechanisms
Solution Approach 1:
The magnetic clutch is designed with dynamic adjustability, allowing the axial distance between magnets to be changed during operation. The adjustment ring can be rotated to modify the position of the second magnet relative to the first magnet, enabling real-time torque control without complex fixed adjustment mechanisms.
Solution Approach 2:
The torque transmission is controlled by changing the axial distance parameter between the two magnets. By adjusting this single parameter through the rotation of the adjustment ring, the maximum torque can be precisely controlled without modifying other structural parameters or adding complex mechanisms.
3Ease of repair
If the springs are made easily replaceable for maintenance, then the ease of repair is improved, but the structural complexity increases due to the need for quick-release mechanisms
Solution Approach 1:
The head for applying caps is segmented into modular components, with the springs and intermediate support forming a separate maintenance module. This module can be easily removed and replaced as a unit, allowing quick spring replacement without dismantling the entire magnetic clutch assembly or other critical components.
Solution Approach 2:
The springs and intermediate support are designed as extractable components that can be removed from the head assembly for maintenance. This extraction mechanism allows easy spring replacement while keeping the rest of the device intact, avoiding the need for complex quick-release mechanisms throughout the entire structure.
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 washable, aseptic, and efficient cap application system with adjustable torque, maintaining hygiene and allowing for quick spring replacement without dismantling, enhancing the reliability and cleanliness in aseptic environments.
Implementation Method 1
a magnetic clutch set between the tubular bushing and the shaft... the magnetic clutch comprises a first magnet and a second magnet, said magnets being set within said tubular bushing and having respective surfaces facing, and set at a distance from, one another
Implementation Method 2
elastic compression means, set between said top body and said intermediate support... elastic compression means for pressing in an axial direction the intermediate support
Data Source
AI summary
A head for applying threaded caps to containers that are to be used in automatic machines for closing containers. The head may comprise a tubular bushing, a shaft that extends coaxially within the tubular bushing and that carries at a bottom end thereof an attachment for a cap gripping member, and a magnetic clutch set between the tubular bushing and the shaft.