Multi-Station Web Packaging Sealing for Maintenance and Speed
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Solution Overview
Problem
Conventional web packaging machines with a single sealing station face difficulties in adjusting, maintaining, and replacing heavy sealing die members, and struggle to achieve fast and uniform package evacuation and sealing, especially when handling large matrices of food products.
Innovation Solution
Implementing multiple sealing stations along the web transport conveyor, where each station can perform identical or different functions, utilizing the same or independent actuators, and being programmable, to facilitate faster and more uniform package sealing and reduce ergonomic challenges associated with heavy components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If a single sealing station with heavy sealing die members is used, then the machine can perform sealing functions, but it becomes difficult to adjust, maintain, and replace the sealing die members
Solution Approach 1:
The patent divides the sealing function into multiple sealing stations (first sealing station, second sealing station, etc.) distributed along the web transport conveyor. Each sealing station has its own sealing die members that are lighter and can be independently adjusted, maintained, and replaced without affecting the entire sealing system, thus resolving the contradiction between ease of maintenance and device complexity.
2Productivity
If a single sealing station is used, then the machine structure is simpler, but it struggles to achieve fast and uniform package evacuation and sealing
Solution Approach 1:
The patent implements multiple sealing stations spaced along the web transport conveyor, where each station performs sealing operations independently or in coordination. This segmentation allows parallel processing of multiple packages simultaneously, achieving fast and uniform package evacuation and sealing while maintaining manageable system complexity through modular design.
Solution Approach 2:
The multiple sealing stations are configured to operate continuously along the moving web, with each station performing sealing operations on different packages at the same time. This continuous action across multiple stations increases overall productivity while the modular nature of each station keeps device complexity controlled.
3Speed
If multiple sealing stations with independent actuators are implemented, then packaging speed increases, but the machine complexity increases
Solution Approach 1:
The patent employs actuators that can be configured to work independently or in coordination across multiple sealing stations. The same actuator design can serve multiple sealing stations, providing universal functionality that increases packaging speed while controlling overall system complexity through standardized components.
Data Source
AI summary
A web packaging machine for enclosing a food product within a food product package has a first sealing station that seals an upper web of packaging material to a lower web of packaging material to thereby partially enclose the food product in the food product package and a second sealing station configured to further seal the upper web of packaging material to the lower web of packaging material to thereby fully enclose the food product in the food product package. A lower web transport conveyor conveys the lower web of packaging material from upstream to downstream first through the first sealing station and then through the second sealing station.