Venting Valve Retaining Ring for Low-Cost Tire Mold Air Discharge
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Solution Overview
Problem
Existing venting valves in vulcanization molds for tire manufacturing often have complex structures and high manufacturing costs, and their mounting principles can lead to air discharge inefficiencies due to the lack of effective internal locking mechanisms, resulting in deviations in tire shape and surface patterns.
Innovation Solution
A venting valve with a retaining ring that provides internal locking and axial support for the valve stem, allowing for a simple and inexpensive design with improved air discharge properties, featuring a multipurpose fastening element that can be easily mounted and provides lateral guidance and support for the spring element.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing venting valves are used, then air venting function is provided, but the structure becomes complex and manufacturing cost increases
Solution Approach 1:
The patent combines multiple functions into a single integrated valve body structure. The valve stem, spring chamber, and air passage are merged into one component, eliminating the need for separate housing parts and reducing assembly complexity while maintaining reliable air venting function.
Solution Approach 2:
The valve stem serves multiple functions: it acts as both the closing element for the air passage and the mounting structure for the spring. The valve body simultaneously provides structural support, defines the air passage, and houses the spring chamber, reducing the overall number of components needed.
2Reliability
If existing venting valves are used, then air venting is possible, but manufacturing cost becomes high
Solution Approach 1:
By merging multiple components into a single valve body, the patent reduces the number of parts that need to be manufactured, stored, and assembled. This integration simplifies the manufacturing process and reduces overall production costs while maintaining the required air venting reliability.
Solution Approach 2:
The patent employs standard, readily available materials and design configurations that can be manufactured using conventional processes. The valve body, stem, and spring are designed to be produced with standard machining and assembly techniques, avoiding the need for specialized or expensive manufacturing methods.
3Ease of operation
If existing mounting principles are used, then valve stem can be mounted, but air discharge efficiency decreases
Solution Approach 1:
Instead of designing the valve stem to fit into a pre-formed cavity, the patent inverts the approach by having the valve stem itself define the spring chamber space. The spring is placed in the space created by the valve stem's position, which optimizes the air passage geometry and improves air discharge efficiency while simplifying the mounting process.
4Reliability
If complex valve structures are used, then valve function is provided, but internal locking mechanisms are insufficient
Solution Approach 1:
The spring-loaded valve stem design provides self-locking functionality. When air pressure builds up, the valve stem automatically opens to vent the air, and the spring automatically returns it to the closed position. This self-regulating mechanism eliminates the need for complex external locking mechanisms while ensuring reliable valve function.
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 enables efficient air discharge with reduced manufacturing complexity and cost, ensuring accurate tire shape and surface patterns by maintaining the valve stem in a normal open position and facilitating smooth air flow through a clear and wide venting path.
Implementation Method 1
a spring element (9) which is arranged to press the valve stem (6) in opening direction (B) towards an opening position
Data Source
Figure 1~2
Figure 3~6
Figure 7~9
AI summary
The invention relates to a venting valve and method of mounting a valve stem of a venting valve. The venting valve (3) comprises a valve body (4) inside which is a venting channel (5) which is provided with a movable valve stem (6) comprising a valve member (7) and a collar (8) at an opposite end of the valve stem. A spring element (9) is arranged around the valve stem. Movement of the valve stem is limited by means of an internal retaining ring (11) mounted to inside the venting channel.