Pipe Flange Forming Die Shielding Against Foreign Matter Scatter
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Solution Overview
Problem
Existing forming devices face challenges in preventing foreign matter such as fragments from scattering during the high-pressure gas expansion process, which can lead to deformation of the flange part and potential safety hazards due to the risk of foreign matter flying out of the die.
Innovation Solution
A forming device equipped with a shielding member that extends from the die holders to block the sub-cavity part, preventing foreign matter from advancing and scattering by being positioned on the extending line of the sub-cavity part, and can be integrated with the die holders to eliminate the need for a separate shielding member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate shielding member is added to block foreign matter, then safety and cleanliness are improved, but device complexity increases
Solution Approach 1:
The shielding member is integrated with the die holder structure, merging two functional elements into one. The die holder simultaneously provides structural support for the die and acts as a shielding barrier against foreign matter, eliminating the need for a separate shielding component while maintaining safety functionality.
Solution Approach 2:
The die holder is designed to perform multiple functions: it holds the die in position during forming operations and simultaneously serves as a shielding member to block foreign matter from scattering. This multi-functional design reduces overall device complexity while improving reliability.
2Device complexity
If the shielding member is integrated with the die holder, then device complexity is reduced, but the shielding effectiveness may be compromised
Solution Approach 1:
The shielding member is integrated with the die holder structure, merging two functional elements into one. The die holder simultaneously provides structural support for the die and acts as a shielding barrier against foreign matter, eliminating the need for a separate shielding component while maintaining safety functionality.
3Productivity
If high-pressure gas is supplied for expansion, then forming speed is improved, but foreign matter scattering risk increases
Solution Approach 1:
The shielding member is positioned in advance within the die holder to prevent foreign matter scattering before the high-pressure gas expansion occurs. This preliminary protective measure counteracts the harmful effect of foreign matter being propelled by the expanding gas, allowing high-speed forming to proceed safely.
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 shielding member effectively prevents foreign matter from dispersing into the surroundings, ensuring the formation of a desired flange shape and maintaining die cleanliness without hindering the insertion or removal of the metal pipe material.
Implementation Method 1
a gas supply part that supplies a high-pressure gas that is a gas into a metal pipe material held between the upper die and the lower die
Data Source
AI summary
A forming device includes a blow-forming die and a shielding member. The blow-forming die includes a first die that protrudes from a first die holder towards a second die holder and a second die that protrudes from the second die holder towards the first die holder. The shielding member is configured to extend from the first die holder to the second die holder before the blow-forming die commences forming a flange part of a pipe in a sub-cavity part. The sub-cavity part is between a main cavity part and the shielding member. The shielding member is separated from the first die and the second die.