Wear Suppressor Hardness in Plasticizing Apparatus Rotor Barrel
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Solution Overview
Problem
The existing plasticizing and injection molding apparatuses face challenges in reducing wear and processing costs due to the difficulty in cutting hardened components, such as rotors, barrels, and enclosures, which are necessary for forming grooves and holes, leading to increased processing costs and potential dimensional inaccuracies.
Innovation Solution
Incorporating a wear suppressor with higher Vickers hardness than the components it is fixed to, between the rotor and barrel or rotor and enclosure, to enhance wear resistance and facilitate cutting, while maintaining high wear resistance at facing sections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the rotor, barrel, and enclosure are hardened to suppress wear, then wear resistance is improved, but cutting difficulty increases and processing cost increases
Solution Approach 1:
The patent applies different hardness levels to different parts of the plasticizing apparatus. The rotor and barrel are hardened to provide wear resistance at the facing portions, while the enclosure remains unhardened to maintain ease of cutting. This local differentiation resolves the contradiction by providing wear resistance where needed without compromising manufacturability of the entire component.
Solution Approach 2:
The patent divides the plasticizing apparatus into distinct components (rotor, barrel, enclosure) with different hardness treatments. By segmenting the hardness application rather than uniformly hardening the entire apparatus, the invention enables selective wear resistance while preserving cutting accessibility for the enclosure.
2Reliability
If the rotor, barrel, and enclosure are hardened to suppress wear, then wear resistance is improved, but processing cost increases
Solution Approach 1:
The patent applies hardness treatment only to specific components (rotor and barrel) that experience high wear, while leaving the enclosure unhardened. This selective approach reduces processing costs compared to hardening the entire apparatus, while still providing adequate wear resistance at the critical interfaces.
Solution Approach 2:
By avoiding the expensive hardness treatment for the enclosure, the patent effectively uses a cheaper, more easily manufacturable material for that component. The enclosure can be replaced or repaired more economically since it doesn't require hardened steel processing.
3Reliability
If the rotor, barrel, and enclosure are hardened to suppress wear, then wear resistance is improved, but dimensional accuracy decreases
Solution Approach 1:
The patent applies hardness treatment only to the rotor and barrel, excluding the enclosure. This localized hardening minimizes the impact on overall dimensional accuracy, as the enclosure can be manufactured with standard precision processes without the dimensional constraints imposed by hardening.
Solution Approach 2:
By segmenting which components receive hardness treatment, the patent isolates the dimensional accuracy challenges to only the hardened components (rotor and barrel), while the enclosure maintains easier dimensional control through conventional manufacturing processes.
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
This configuration allows for effective wear suppression and easy cutting of components, reducing processing costs and ensuring high dimensional accuracy, thereby improving the efficiency and cost-effectiveness of the plasticizing and injection molding processes.
Implementation Method 1
a heating section that heats a material supplied to a portion between the rotor and the barrel
Implementation Method 2
a wear suppressor provided in at least one of the portion between the rotor and the barrel and a portion between the rotor and the enclosure
Data Source
AI summary
A plasticizing apparatus includes a drive motor, a rotor rotated by the drive motor and having a groove-forming surface provided with a groove, a barrel facing the groove-forming surface and having a communication hole, an enclosure that accommodates the rotor, a heating section that heats a material, and a wear suppressor provided in at least one of the portion between the rotor and the barrel and the portion between the rotor and the enclosure. When the wear suppressor is provided between the rotor and the barrel, the wear suppressor is fixed to the rotor or the barrel and has Vickers hardness higher than the Vickers hardness of one of the rotor and the barrel, the one to which the wear suppressor is fixed, whereas when the wear suppressor is provided between the rotor and the enclosure, the wear suppressor is fixed to the rotor or the enclosure and has Vickers hardness higher than the Vickers hardness of one of the rotor and the enclosure, the one to which the wear suppressor is fixed.