Continuous Vacuum Sealing Machine with Inflatable Press Strap
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Solution Overview
Problem
Conventional vacuum sealing machines suffer from poor heat dissipation, leading to high heating wire temperatures that limit continuous operation, risk burns, damage bags, and reduce sealing effectiveness.
Innovation Solution
Incorporation of an inflatable press strap that expands to abut against the heating element during sealing, enhancing heat dissipation by maintaining a distance during non-sealing processes and inflating to contact during sealing, using air pumps for rapid temperature regulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the sealing strip is installed on the upper cover to maintain pressure during vacuuming and heat sealing, then the sealing pressure is improved, but the heat dissipation capability deteriorates
Solution Approach 1:
The patent replaces the static sealing strip with a dynamic inflatable press strap that can be inflated and deflated. During heat sealing, the strap is inflated to provide sealing pressure; during vacuuming and cooling phases, it is deflated to allow heat dissipation from the heating wire. This dynamic adjustment resolves the contradiction between maintaining sealing pressure and enabling heat dissipation.
2Productivity
If the heating wire temperature is increased to improve sealing efficiency, then the sealing speed is improved, but the risk of burns and bag damage increases
Solution Approach 1:
The patent implements periodic action by controlling the inflatable press strap to be inflated only during the heat sealing phase and deflated during vacuuming and cooling phases. This periodic inflation/deflation cycle allows the heating wire to operate at high temperature briefly for efficient sealing, then cool down to prevent burns and bag damage, resolving the contradiction between sealing speed and burn risk.
3Reliability
If the sealing strip is fixed to maintain continuous contact with the heating element, then the sealing reliability is improved, but the continuous operation capability deteriorates
Solution Approach 1:
The patent uses a dynamic inflatable press strap that can be inflated to provide reliable sealing contact when needed and deflated to enable heat dissipation during non-sealing phases. This allows the system to maintain sealing reliability during actual sealing operations while enabling continuous operation by preventing overheating during vacuuming and cooling phases.
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
Enables continuous operation with improved heat dissipation, reducing the risk of burns and bag damage, and maintaining effective sealing quality.
Implementation Method 1
a vacuum sealing machine which is capable of working continuously... an air drawing pump, an air feeding pump, and an exhaust tank defined in the body, located beside the sealing element and configured to draw airs from a vacuum packaging bag
Implementation Method 2
an exhaust interface of the air feeding pump is in communication with the inflatable press strap via a second air pipe. In the heat sealing process, the inflatable press strap is inflated to expand the flexible wall of the inflatable press strap and to movably abut against the sealing element
Implementation Method 3
The sealing element includes a mounting base disposed on the main body, a horizontally arranged heating wire fixed on the upper part of the mounting base, and a heating wire covering the upper part of the bag. During the entire process of vacuuming and heat sealing, the sealing strip installed on the upper cover always presses against the insulation layer of the sealing element and maintains pressure
Data Source
AI summary
A vacuum sealing machine capable of working continuously contains: a body, a sealing element, a covering mechanism y, a control circuit, an air drawing pump, an air feeding pump, and an exhaust tank. The sealing element and the covering mechanism moveably contact with each other to close the exhaust tank before vacuuming. In a heat sealing process, a mouth of the vacuum packaging bag is pressed by the sealing element. The body includes the inflatable press strap in which an inflatable cavity is defined, and the air feeding pump is communicated with the inflatable press strap. After the sealing element contacts with the covering mechanism, the inflatable press strap is not inflated and maintains a predetermined distance apart from the sealing element. In the heat sealing process, the inflatable press strap is inflated to expand the inflatable press strap and to movably abut against the sealing element.