Magnetic Cart Conveying for Cap Sterilization Without Deformation
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Solution Overview
Problem
Existing cap sterilization machines face challenges in adapting operating speed to capping machine working conditions and are prone to cap deformation due to high temperatures and contact forces, leading to mechanical complexity and detritus formation.
Innovation Solution
A sterilization machine with a conveying device featuring an endless rail and moving carts with magnetic interaction elements, allowing for controlled advancement of caps along a conveying path within an isolation chamber, using electromagnetic forces to manage cart position and speed independently, reducing mechanical contact and complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a conventional conveying device with continuous cap contact is used, then caps can be advanced through the sterilization chamber, but cap deformation occurs due to thrust forces and high temperatures
Solution Approach 1:
The conveying device is segmented into discrete carts that move independently along the guide rail, with each cart carrying a limited number of caps. This segmentation reduces the thrust force on individual caps compared to continuous contact conveying, thereby reducing deformation while maintaining conveying functionality
Solution Approach 2:
The patent replaces the conventional mechanical pusher-based conveying system with a magnetic field-based propulsion system. Electromagnetic actuators generate magnetic fields that interact with ferromagnetic elements in the carts, eliminating mechanical contact and thrust forces that cause cap deformation during conveying
2Ease of operation
If auxiliary carts with mechanical guides are used, then cart advancement is controlled, but detritus formation increases due to interaction between auxiliary carts and guide
Solution Approach 1:
The patent replaces mechanical guiding and positioning systems with magnetic field-based control. Electromagnetic actuators provide contactless propulsion and positioning of carts along the guide rail, eliminating mechanical friction and detritus formation while maintaining precise position control
Solution Approach 2:
The patent introduces magnetic fields as an intermediary between the control system and the carts. The electromagnetic actuators create magnetic fields that interact with ferromagnetic elements in the carts, serving as a non-contact mediator for force transmission and position control, thereby avoiding direct mechanical contact and detritus generation
3Productivity
If mechanical pusher elements are used to advance caps, then caps can be conveyed through the sterilization chamber, but the mechanical complexity of the sterilization machine increases
Solution Approach 1:
The patent replaces complex mechanical pusher elements and linkages with a simplified electromagnetic propulsion system. Electromagnetic actuators mounted on the guide rail directly interact with ferromagnetic elements in the carts, eliminating the need for mechanical pushers, cam mechanisms, and associated linkages, thereby reducing mechanical complexity while maintaining conveying productivity
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 enables flexible adaptation of sterilization speed and reduces cap deformation, simplifies mechanical design, and minimizes detritus formation, maintaining aseptic conditions while reducing contamination risks.
Implementation Method 1
The sterilization machine (1) comprises an electromagnetic actuator (21) arranged outside the inner space (4) and configured to generate a magnetic field; a cart (20) positioned within the inner space (4), comprising a ferromagnetic element; wherein the electromagnetic actuator (21) interacts with the cart (20) through the wall (10) by means of the generated magnetic field, in such a manner to propel the cart (20) along the guide rail (19)
Implementation Method 2
The electromagnetic actuator (21) interacts with the cart (20) through the wall (10) by means of the generated magnetic field
Data Source
AI summary
A sterilization machine for the sterilization of caps, comprising an isolation chamber having an inner space in which the caps are advanced along a conveying path and separating the inner space from an outer space, a plurality of carts positioned within the inner space and an actuation unit arranged in the outer space and configured to selectively advance the carts along an advancement path by means of the generation of an electromagnetic field. Each cart comprises a pusher element configured to interact with a group of caps having one or more caps, to advance the respective group along the conveying path during the advancement of the respective cart along at least one portion of the advancement path. The actuation unit is configured to selectively lift the carts by means of levitation and to advance the carts along the advancement path by means of control of the electromagnetic field.