Capsule Sealing Head Cleaning by Laser Ablation
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Solution Overview
Problem
Capsule filling lines require frequent cleaning and maintenance, which leads to downtime and potential damage to sealing heads, especially when handling powders and granulates that easily contaminate thermal sealing heads, necessitating an efficient and non-damaging cleaning method.
Innovation Solution
The use of an ablation unit, such as a laser, to irradiate and remove residue from sealing heads, allowing for intermittent cleaning during operation without damaging the intricate features of thermal sealing heads, thereby reducing downtime and maintaining their condition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wire cleaning brushes are used to remove residue from sealing heads, then the residue is removed, but the capsule filling line experiences downtime and the sealing heads may be damaged
Solution Approach 1:
The patent replaces mechanical wire cleaning brushes with a thermal field (infrared heating element) to remove residue. The infrared heater softens the residue through thermal energy, allowing it to be wiped away gently without mechanical abrasion or line downtime, thus resolving the contradiction between effective cleaning and preserving sealing head condition while avoiding production interruption
Solution Approach 2:
The infrared heating element is positioned to pre-heat and soften residue on the sealing head before the wiping action occurs. This preliminary thermal treatment makes the residue easier to remove without requiring forceful mechanical scraping, thereby preventing damage to the sealing head and reducing cleaning time
2Reliability
If thermal sealing heads are used to seal capsule lids, then sealing effectiveness is improved, but residue from powders and granulates builds up more quickly on the sealing heads
Solution Approach 1:
The patent uses an infrared heating element to thermally soften residue buildup on the thermal sealing head, allowing for easier and more frequent cleaning without damaging the sealing surface. This thermal cleaning approach maintains the sealing head's effectiveness over extended periods by preventing residue accumulation that would compromise sealing quality
Solution Approach 2:
The infrared heater changes the temperature parameter of the residue, softening it from a hardened state to a pliable state that can be easily wiped away. This parameter change enables frequent maintenance cleaning that preserves the thermal sealing head's performance characteristics over time
3Reliability
If cleaning procedures are performed frequently to maintain sealing head performance, then sealing quality is maintained, but productivity and throughput of the capsule filling line are reduced
Solution Approach 1:
The infrared heating element performs preliminary softening of residue during brief maintenance intervals without halting production. This allows sealing heads to be cleaned frequently to maintain quality while minimizing interruption to the capsule filling throughput
Solution Approach 2:
The thermal field-based cleaning system allows for faster residue removal compared to mechanical brushing methods, reducing the time required for maintenance cleaning and thereby preserving overall line productivity while maintaining sealing quality
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 method effectively removes residue from sealing heads, including thermal ones, with minimal damage and reduced downtime, particularly effective for powders and granulates, maintaining the sealing heads' condition over extended use.
Implementation Method 1
operating an ablation unit to irradiate the sealing head to ablate a residue off the sealing head
Data Source
Figure 1
Figure 2~4
Figure 5
AI summary
Apparatus and methods of cleaning a sealing head (23) of a capsule filling line, comprising operating an ablation unit (10) to irradiate the sealing head (23) to ablate a residue off the sealing head (23).