Packaging System Mover Positioning for Bag Size Adjustment
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Solution Overview
Problem
Existing packaging machines face difficulties in adjusting the size of packaging bags and have complex configurations due to partition sealing devices that both heat-seal and serve as grips, leading to inefficiencies in heat exhaust and film cooling.
Innovation Solution
A packaging system with a bag feeding device that forms side seal portions from a long film, a conveying device with independent movers on a guide rail for adjusting the position and distance between side seal portions, and a bag mouth opening/closing device that controls the upper end openings of bag portions for easy filling and gas replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If partition sealing devices are attached to the rotating body in the radial direction to heat-seal the long film, then the sealing function is achieved, but the wiring and structure become complicated and it is difficult to adjust the widths between devices
Solution Approach 1:
The invention separates the sealing function from the gripping function into distinct devices. The partition sealing devices are dedicated solely to heat-sealing the long film, while separate gripping devices hold the film. This segmentation eliminates the need for complex wiring and structural integration required when combining both functions in one device, directly resolving the complexity issue while maintaining reliable sealing.
Solution Approach 2:
The gripping function is extracted from the partition sealing devices and assigned to separate gripping devices. This extraction allows the partition sealing devices to focus exclusively on their sealing function, simplifying their structure and wiring. The gripping devices independently handle the film holding task, eliminating the need for integrated complex mechanisms.
2Adaptability or versatility
If partition sealing devices also serve as grips to sandwich the long film, then both sealing and gripping functions are achieved, but the configuration becomes complicated and heat exhaust and film cooling efficiencies deteriorate
Solution Approach 1:
The invention divides the packaging process into distinct functional zones: sealing zones with partition sealing devices and gripping zones with separate gripping devices. This spatial segmentation allows heat exhaust and cooling processes to occur efficiently in dedicated areas without interference from gripping mechanisms, improving thermal management efficiency while maintaining functional versatility.
Solution Approach 2:
The gripping function is extracted from the sealing devices and assigned to separate gripping devices positioned at different locations along the conveying path. This extraction enables optimized thermal zones where heat exhaust and cooling can occur without mechanical interference, improving productivity while the system maintains both sealing and gripping capabilities through coordinated multiple devices.
3Reliability
If the long film is held for a while after heat sealing, then the sealing is secured, but the efficiencies of heat exhaust and film cooling deteriorate
Solution Approach 1:
The invention implements preliminary cooling and heat exhaust actions immediately after heat sealing by positioning dedicated cooling devices and heat exhaust systems in close proximity to the sealing zone. This preliminary action reduces the need for prolonged holding times, as the film and sealed portions are quickly cooled and stabilized, maintaining sealing security while improving heat exhaust efficiency and reducing energy loss.
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 system simplifies the configuration and layout of packaging devices, allows easy adjustment of bag size, and improves efficiency by separating the functions of gripping and sealing, enabling flexible packaging of various products.
Implementation Method 1
One of each mover and the guide rail is provided with a permanent magnet, and the other is provided with an electromagnet
Implementation Method 2
One of each mover and the guide rail is provided with a permanent magnet, and the other is provided with an electromagnet
Data Source
AI summary
A packaging system includes a bag feeding device for forming a packaging bag series having a continuous bag portion partitioned by a side seal portion from a long film and a bag mouth opening/closing device having a conveying path formed between a conveying device for pulling and conveying the packaging bag series with first grips and a guide rail parallel to the conveying path. The movers traveling on the guide rail has second grips for gripping the side seal portion. By controlling and adjusting the distance between one mover and the mover immediately after that, an upper end opening of the bag portion is opened or closed according to various processes of the packaging process.