Cap Sterilization Machine Using Electromagnetic Cart Actuation
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Solution Overview
Problem
Existing cap sterilization machines face challenges in adapting operating speed to capping machine conditions and are prone to cap deformation due to high temperatures and mechanical complexity, which increases the risk of contamination and mechanical issues.
Innovation Solution
A sterilization machine with a conveying device featuring a guide rail and actuation unit that uses electromagnetic forces to control the advancement of carts along a serpentine path, allowing for adjustable speed and reduced mechanical contact, thereby minimizing cap deformation and contamination risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If traditional pusher elements are used to advance caps on a guide rail, then caps can be conveyed through the sterilization tunnel, but the operating speed cannot be adapted to capping machine conditions and cap deformation occurs due to mechanical thrust forces
Solution Approach 1:
The patent replaces the traditional mechanical pusher element system with an electromagnetic actuation system. Electromagnetic actuators positioned alongside the guide rail exert forces on the caps through magnetic fields, eliminating the need for direct mechanical contact and thrust forces that cause deformation. This substitution enables precise speed control and adaptability to varying capping machine conditions without the mechanical constraints of traditional pusher mechanisms.
Solution Approach 2:
The electromagnetic actuation system allows dynamic adjustment of operating parameters including speed, acceleration, and positioning. By controlling the electromagnetic field strength and duration, the system can adapt to different capping machine conditions and cap types, resolving the contradiction between maintaining consistent conveyance and adapting to varying operational requirements.
2Temperature
If high temperatures are applied for sterilization, then sterilization effectiveness is improved, but cap deformation increases due to the combination of heat and mechanical forces
Solution Approach 1:
By replacing mechanical pusher elements with electromagnetic actuators, the system eliminates direct mechanical contact and thrust forces during cap conveyance. This substitution is particularly beneficial at high temperatures where caps are more susceptible to deformation, as electromagnetic forces can be precisely controlled to advance caps without applying excessive mechanical stress that would compromise shape integrity.
3Ease of operation
If auxiliary carts with magnetic interaction are used to advance carts, then cart advancement is achieved, but mechanical complexity increases and detritus forms inside the auxiliary chamber
Solution Approach 1:
The patent replaces the complex mechanical auxiliary cart system with magnetic interaction with a direct electromagnetic actuation system that acts on the caps themselves. This eliminates the need for auxiliary carts, mechanical guides, and magnetic coupling mechanisms, thereby reducing device complexity while maintaining precise control over cap advancement. The elimination of moving mechanical parts also prevents detritus formation.
4Productivity
If mechanical guides and auxiliary carts are used within the isolation tunnel, then cap conveyance is achieved, but the risk of contamination increases due to additional mechanical components and detritus formation
Solution Approach 1:
By replacing mechanical guides and auxiliary carts with electromagnetic actuators, the system eliminates additional mechanical components that could generate detritus and become contamination sources. The electromagnetic actuators can be positioned outside the isolation tunnel or designed with minimal intrusion, maintaining cap conveyance efficiency while significantly reducing contamination risks associated with mechanical wear and detritus formation.
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 enables flexible adaptation to different cap formats, reduces mechanical complexity, and minimizes contamination by controlling cap advancement through electromagnetic forces, optimizing sterilization efficiency and reducing the risk of cap deformation.
Implementation Method 1
actuation unit that uses electromagnetic forces to control the advancement of carts along a serpentine path
Data Source
Figure 1
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AI summary
There is described a sterilization machine (1) for the sterilization of caps (2) comprising an isolation tunnel (3), a plurality of carts (20) positioned within the inner space (4) and an actuation unit (21) to advance the carts (20) along an advancement path (Q). Each cart (20) comprises one pusher (22) configured to interact with a group (23) of caps (2) such that the advancement of the carts (20) along an operative portion (Q1) of an advancement path (Q) corresponds to the advancement of the group (23) along a conveying path (P). The operative portion (Q1) is serpentine shaped.