Automatic Pressing Power Device for Vacuum Packaging Sealing
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Solution Overview
Problem
Vacuum packaging machines suffer from inadequate edge locking force, leading to poor sealing and vacuuming efficiency, and user errors due to the hinge twisted upper flip-top design, resulting in air leakage and increased after-sales pressure.
Innovation Solution
An automatic pressing power device with a power airbag and telescopic mechanisms that automatically clamps the vacuum bag, eliminating the need for manual tightening and ensuring accurate sealing and vacuuming by utilizing air pressure differences to move the power plate and maintain proper positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the driving locking device is set in the middle of the vacuum packaging machine body, then the maximum locking force is concentrated in the middle, but the locking force at the edge is weak leading to poor sealing effect
Solution Approach 1:
The locking device is divided into multiple independent locking units distributed at different positions (middle and edges) of the upper seal. Each locking unit independently provides locking force, ensuring both central and edge areas achieve sufficient sealing pressure, thereby resolving the contradiction between force concentration and sealing reliability.
Solution Approach 2:
Different regions of the upper seal are equipped with locking units according to their specific sealing requirements. The edge regions, which previously had insufficient locking force, are now provided with dedicated locking units to ensure adequate sealing pressure at these critical locations, while the middle region maintains its locking capability.
2Device complexity
If the hinge twisted upper flip-top design is used, then the structure is simple, but user errors occur leading to air leakage and vacuum pumping failure
Solution Approach 1:
The upper seal is equipped with automatic locking units that autonomously detect and lock onto the lower seal without requiring user intervention. The locking units automatically engage when the upper seal is positioned over the lower seal, eliminating the need for manual twisting or flipping operations, thus preventing user errors while maintaining structural simplicity.
Solution Approach 2:
The manual mechanical operation (hinge twisting and flipping) is replaced with an automatic locking mechanism that uses magnetic or mechanical sensing to detect the presence of the lower seal and automatically engages the locking units, substituting user-driven mechanical action with an automated system.
3Device complexity
If manual tightening is required, then the device structure is simple, but sealing precision is poor due to inadequate edge pressing force
Solution Approach 1:
The locking units automatically adjust and apply the required pressing force to ensure precise sealing. Each locking unit independently regulates its locking force based on the engagement with the lower seal, ensuring consistent sealing precision without requiring complex manual adjustment mechanisms.
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 automatic pressing power device reduces user errors, enhances sealing and vacuuming efficiency, and decreases after-sales costs by ensuring tight attachment of the vacuum bag, thus improving the overall performance and reliability of the vacuum packaging machine.
Implementation Method 1
utilizing air pressure differences to move the power plate
Implementation Method 2
provided with first return spring... and second return spring... to form second telescopic mechanism
Data Source
AI summary
The invention relates to an automatic pressing power device of a vacuum packaging machine, wherein the automatic pressing power device comprises main body, power plate and power airbag, wherein the power plate is connected with the main body through the power airbag and forms a telescopic closed cavity; the bottom of the main body is provided with an air nozzle communicated with the closed cavity. The automatic pressing power device provided by the invention does not need to tighten the upper cover artificially, and has the characteristics of simple structure, low cost, high structural stability, long service life and the like.