Magnetic Gas Nozzle Support for Packaging Apparatus
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Solution Overview
Problem
Conventional packaging apparatuses with gas nozzles face issues where the weight of the nozzle causes it to contact the product, leading to potential damage during transportation, and reducing nozzle length compromises gas replacement efficiency, resulting in larger packaged bodies and increased gas usage.
Innovation Solution
A packaging apparatus with a gas nozzle featuring a magnetic site that utilizes a magnetic force-generating member to draw the nozzle upward, reducing weight-induced contact with the product and enhancing gas replacement efficiency by positioning the nozzle closer to the top sealing device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the gas nozzle length is increased to improve gas replacement efficiency, then the gas replacement efficiency is improved, but the nozzle contacts the product due to its own weight
Solution Approach 1:
The patent applies the anti-weight principle by introducing a magnetic field to counteract the gravitational force acting on the gas nozzle. A magnet is positioned above the nozzle to generate an upward magnetic force that balances the downward gravitational force, preventing the nozzle from sagging and contacting the product while maintaining the necessary length for effective gas replacement.
2Reliability
If the gas nozzle length is reduced to avoid product contact, then the product damage risk is reduced, but the gas replacement efficiency deteriorates
Solution Approach 1:
The magnetic counterweight system allows the nozzle to maintain a longer length optimized for gas replacement efficiency while the magnetic force prevents it from sagging and contacting the product, thus resolving the contradiction between nozzle length and product safety.
3Object-affected harmful factors
If the nozzle is supported at both ends to prevent sagging, then the product contact is prevented, but the device complexity increases
Solution Approach 1:
The patent replaces the mechanical support system (which would require additional brackets, mounts, or structural elements) with a magnetic field-based support system. The magnet generates a non-contact holding force that prevents nozzle sagging without adding mechanical complexity to the support structure.
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 magnetic support system effectively prevents the gas nozzle from contacting the product, ensuring smooth transportation and reducing gas usage while maintaining efficient inert gas filling within the packaged body.
Implementation Method 1
a magnetic site; a magnetic force-generating member, the gas nozzle is drawn by exerting a magnetic force generated by the magnetic force-generating member on the magnetic site
Data Source
AI summary
[Technical Problem] A distance of a front free end portion of the gas nozzle being weighed down due to its own weight is alleviated or eliminated to suppress contact between the gas nozzle and a product.[Solution to Problem] The present invention provides a packaging apparatus equipped with gas replacement function. In the packaging apparatus, a gas nozzle 43 is inserted into a tubular film 20, and inert gas is ejected from the gas nozzle, thereby replacing the gas inside the tubular film with the inert gas. After gas replacement, a top sealing device 30 seals and cuts the tubular film to form a packaged body. The gas nozzle is formed of magnetic material. A permanent magnet 35 is disposed inside an endless belt 34 of an upper holding belt device 28. The gas nozzle formed of magnet material is drawn to be raised due to magnetic force of the permanent magnet. Due to this contact between the gas nozzle and a product is suppressed.