Friction Rollers Prevent Waste Film Entanglement in Sealing Devices
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Solution Overview
Problem
Existing waste storage devices face issues with waste items being caught in sealing rollers due to differences in film stretch ratios and increased volume, leading to warping and bending, which reduces storage efficiency.
Innovation Solution
A packaging device with two film feed rollers and waste sealing rollers, along with friction rollers below them, where the friction rollers are designed to pull sealed waste items downward with higher surface friction, preventing entanglement and enhancing storage efficiency by ensuring films are not caught in the sealing rollers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adhesive film and non-adhesive film are used for sealing waste items, then sealing function is achieved, but waste items become warped due to different stretch ratios
Solution Approach 1:
The patent introduces friction rollers with controlled surface friction properties to modify the mechanical parameters of the sealing system. By adjusting the friction coefficient of the friction rollers, the system compensates for the differential stretch between adhesive and non-adhesive films, preventing warping while maintaining sealing effectiveness.
2Productivity
If waste sealing rollers rotate to pull films for sealing, then sealing operation is performed, but waste items get caught in the rollers due to warping and bending
Solution Approach 1:
The friction rollers serve as an intermediary component between the waste sealing rollers and the waste items. They provide controlled friction to guide the sealed waste items downward, preventing entanglement in the sealing rollers while maintaining continuous sealing operations.
Solution Approach 2:
The patent divides the sealing and transport function into separate components: waste sealing rollers for sealing and friction rollers for transport. This segmentation allows each component to perform its specific function without interference, preventing entanglement while maintaining productivity.
3Quantity of substance
If volume of sealed waste items increases, then storage capacity is improved, but waste items become more prone to bending and getting caught
Solution Approach 1:
The friction rollers provide continuous downward pulling force on the sealed waste items through friction. This continuous action prevents accumulation and bending of waste items even as storage volume increases, maintaining entanglement resistance while expanding storage capacity.
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 solution effectively prevents waste items from being caught in sealing rollers, increases the pull-in force for efficient storage, and maintains storage efficiency even when the waste storage part is full, by using friction rollers with higher surface friction and narrower housings to prevent entanglement.
Implementation Method 1
two friction rollers which are driven and rotated to pull the waste item having passed between the two waste sealing rollers downward in a state where the waste item is sealed between two films
Data Source
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AI summary
It is aimed to prevent a waste item sealed with resin films from being caught in rollers such as waste sealing rollers. A waste storage device (100) includes a waste storage part (120) for storing a waste item and a packaging device (10) arranged in an upper part of the waste storage part (120). The packaging device (10) includes two film feed rollers (30, 40), two waste sealing rollers (50, 60) which pull out films (31, 41) and are so arranged in parallel that the peripheral surfaces thereof are in contact via the pulled out respective films (31, 41) in a normal state and at least one of which has the peripheral surface that is elastically deformed along the shape of the waste item, and a driving part (70) which rotates the rollers (50, 60). Two friction rollers (80, 90) which are driven and rotated to sandwich the films (31, 41) sealing the waste item having passed between the waste sealing rollers (50, 60) and pull them downward are provided below the waste sealing rollers (50, 60).