Movable Inner Mold Cylinder Manufacturing for Uniform Thickness
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Solution Overview
Problem
The existing mold devices for manufacturing hydrogen storage tanks often result in non-uniform thickness of the cylinders, which can lead to degradation of the material's properties when exposed to water or hydrogen leakage.
Innovation Solution
A mold device comprising an outer mold part and an inner mold part, where the inner mold is configured to move between molding and exit positions, ensuring uniform thickness of the cylinder by precise molding and introduction of a reinforced resin.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional mold device is used for manufacturing hydrogen storage tanks, then the manufacturing process is simple, but the thickness of the cylinder is not uniform
Solution Approach 1:
The mold device is divided into an outer mold part and an inner mold part, with the inner mold part further segmented into a moving inner mold and a stationary inner mold. This segmentation allows precise control of the molding space to achieve uniform cylinder thickness while maintaining manageable device complexity through modular design.
Solution Approach 2:
The inner mold is configured to move between a molding position (inserted into the molding space) and an exit position (withdrawn from the molding space). This dynamic positioning enables precise control over resin introduction and cylinder formation, ensuring uniform thickness while allowing easy demolding and cycle repetition.
2Reliability
If the cylinder thickness is not uniform, then the manufacturing process is simpler, but the hydrogen sealing performance deteriorates
Solution Approach 1:
By segmenting the mold into outer and inner parts with the inner mold movable between positions, the system achieves precise control of wall thickness throughout the cylinder, ensuring uniform hydrogen sealing performance without compromising reliability.
Solution Approach 2:
The movable inner mold design provides inherent feedback control: the inner mold moves to the molding position to define the exact molding space, ensures uniform resin distribution, then moves to the exit position for demolding. This cyclic motion ensures consistent thickness and sealing performance across all produced cylinders.
3Reliability
If the cylinder thickness is not uniform, then the manufacturing process is simpler, but property degradation when exposed to water occurs
Solution Approach 1:
The segmented mold design with movable inner mold ensures uniform cylinder wall thickness, preventing weak points that would lead to property degradation when exposed to water or hydrogen, thereby improving long-term reliability without complex additional protective measures.
4Manufacturing precision
If the inner mold is movable between molding and exit positions, then the thickness uniformity is improved, but the device complexity increases
Solution Approach 1:
The device is segmented into outer and inner mold parts, with the inner mold further divided into movable and stationary portions. This segmentation achieves uniform thickness through precise control while keeping each segment relatively simple in structure, managing overall device complexity through modular architecture.
Solution Approach 2:
The movable inner mold serves multiple functions: it defines the molding space boundary, controls resin flow, enables uniform thickness formation, and facilitates easy demolding. This multi-functionality reduces the need for additional separate components, managing device complexity while achieving precision.
Data Source
AI summary
A mold device includes: an outer mold part including a first outer mold, and a second outer mold that is moved toward the first outer mold to form a molding space with the first outer mold; and an inner mold part including an inner mold that is moved between a molding position disposed in the molding space of the outer mold part and an exit position deviating from the molding space. The inner mold is configured to mold a cylinder having a hollow part extending in a first direction between the inner mold part and the outer mold part when being located in the molding position. The inner mold is formed to correspond to the cylinder to form a space allowing introduction of a resin.