Threaded Venting Valve Stroke Adjustment for Tire Mould Air Removal
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Solution Overview
Problem
Existing venting valves for vulcanizing moulds of vehicle tires cannot adjust the opening stroke length, leading to inefficiencies in air removal and the need for multiple valve types, causing storage and logistical issues.
Innovation Solution
A venting valve design where the stroke limiter is attached to the valve stem via a threaded connection, allowing the opening stroke length to be adjusted by screwing the stroke limiter or valve insert, without disassembling the valve or removing it from the mould.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the opening stroke length is fixed in existing venting valves, then the valve structure is simple, but air removal efficiency cannot be optimized and multiple valve types must be stored
Solution Approach 1:
The stroke limiter is designed with a threaded connection to the valve stem, transforming the fixed stroke length into an adjustable parameter. This dynamic configuration allows the opening stroke to be modified by rotating the stroke limiter along the threaded portion, enabling optimization of air removal efficiency without changing the overall valve structure or requiring multiple valve types.
Solution Approach 2:
The invention changes the parameter of opening stroke length from a fixed value to an adjustable value through the threaded connection between the stroke limiter and valve stem. By rotating the stroke limiter along the external threads, the stroke length can be precisely adjusted to optimize air removal performance while maintaining a single valve design.
2Adaptability or versatility
If multiple types of venting valves with different stroke lengths are manufactured, then air removal can be optimized for different applications, but storage and logistics become problematic
Solution Approach 1:
The venting valve is designed with a universal stroke limiter that can be adjusted to provide multiple opening stroke lengths. This single valve design performs the function of multiple specialized valves, allowing one valve type to be stored and used for different air removal requirements by simply adjusting the stroke limiter position.
Solution Approach 2:
The adjustable stroke limiter transforms a static, single-purpose valve into a dynamic, multi-functional device. The same physical valve can be configured for different applications by adjusting the stroke length, eliminating the need to manufacture, store, and manage multiple valve types.
3Ease of operation
If the stroke limiter is made adjustable via threaded connection, then opening stroke can be modified without disassembly, but the valve structure becomes more complex
Solution Approach 1:
The valve is segmented into modular components, with the stroke limiter as a separate adjustable element that threads onto the valve stem. This segmentation allows the stroke limiter to be independently adjusted or replaced without disassembling the entire valve, facilitating easy modification while keeping the overall structure manageable.
Solution Approach 2:
The threaded connection is pre-configured on the valve stem during manufacturing, allowing the stroke limiter to be adjusted in place during operation or maintenance. This preliminary preparation enables easy adjustment without requiring complete valve disassembly or removal from the mold.
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
Enables adjustable opening stroke length without disassembly, improving air removal efficiency and reducing the need for multiple valve types, thus simplifying storage and use.
Implementation Method 1
A coil spring is arranged around the valve insert. The coil spring presses the valve disk away from the seat surface towards the interior of the vulcanizing mould and thus the open position of the venting valve.
Implementation Method 2
The stroke limiter comprises a hole provided with an internal thread. The other end of the valve stem is provided with an externally threaded portion, which is fastened to the internal thread of the stroke limiter.
Data Source
AI summary
A venting valve (1) for removing air from a vulcanising mould of a vehicle tyre, which comprises a valve body (2) having a venting channel (12), a movable valve insert (3) arranged in the venting channel (12), which valve insert (3) comprises a valve stem (4), one end of which is provided with a valve member (5) for opening and closing the venting channel (12), and a stroke limiter (6) for limiting an opening stroke of the valve insert (3), and a spring member (7) for pressing the valve insert (3) towards an open position, in which air flow through the venting channel (12) is allowed. The stroke limiter (6) comprises a hole (8) provided with an internal thread (9), and the other end of the valve stem (4) is provided with an externally threaded portion (10), which is fastened to the internal thread (9) of the stroke limiter (6).