Molding Element Notched Plate Insert for Tire Tread
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Solution Overview
Problem
The existing molding elements for manufacturing tire treads with flexible fences to reduce groove resonance are inefficient due to low productivity and difficulty in achieving precise thickness, which affects the bending capability of the flexible fences for liquid drainage.
Innovation Solution
A molding element with a notched plate insert that allows for precise formation of flexible fences, enabling accurate thickness and improved design freedom, which enhances productivity and ensures effective bending for liquid drainage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If milling and casting processes are used to manufacture the molding element, then the flexible fence can be formed in the groove, but the productivity is low and manufacturing complexity increases
Solution Approach 1:
The molding element is divided into a base body and a separately manufactured insert. The insert, which contains the cavity for forming the flexible fence, is produced independently using simple stamping or cutting processes, then integrated into the base body. This segmentation allows each component to be manufactured using the most suitable process, improving overall productivity while maintaining precision.
Solution Approach 2:
The insert is pre-manufactured with the precise cavity geometry needed for forming the flexible fence, before being integrated into the final molding element. This preliminary preparation of the critical precision component separates the precision manufacturing step from the bulk production process, enabling parallel manufacturing and improving overall productivity.
2Manufacturing precision
If milling and casting processes are used to manufacture the molding element, then the cavity can be formed, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The complex molding element is segmented into a simple base body and a specialized insert. The insert contains all the complex cavity features needed for precise flexible fence formation, while the base body remains structurally simple. This segmentation reduces the complexity of each individual manufacturing step.
Solution Approach 2:
The complex cavity-forming functionality is extracted from the base body and placed into a separate insert. This extraction allows the base body to be manufactured using simple, high-productivity processes, while the insert handles the precision requirements through dedicated, simpler manufacturing methods like stamping or cutting.
3Ease of operation
If the flexible fence thickness is not precise, then the bending capability for liquid drainage is compromised, but achieving precise thickness increases manufacturing difficulty
Solution Approach 1:
The insert is pre-manufactured with the exact cavity dimensions needed to produce the flexible fence with the required thickness. This preliminary precision work is done once during insert fabrication, ensuring consistent thickness in all subsequent productions without requiring complex process controls during each molding operation.
Solution Approach 2:
The insert acts as a precise master template or copy that transfers the exact desired geometry to each flexible fence during molding. By maintaining a high-precision insert, consistent flexible fence thickness is achieved through repeated copying of the cavity geometry, simplifying the overall manufacturing process.
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 improves the productivity of manufacturing tire treads with flexible fences while ensuring precise thickness and effective bending capabilities, reducing groove resonance and maintaining high flexibility in the arrangement of the flexible fences.
Implementation Method 1
it is necessary for such flexible fence to bend in a suitable way under the action of the pressure of water for opening the section of the groove
Data Source
AI summary
The molding element has a plurality of contacting element delimited by grooves, the molding element having a molding surface for forming a contact face of the contacting element intended to come into contact with ground during rolling and a groove forming rib portion for forming the groove comprising two opposed rib side faces for forming two opposed groove side faces and a rib top face connecting two rib side faces for forming a groove bottom, the groove forming rib portion providing a space opening to at least one of the rib side faces and/or to the rib top face and an insert being received in the space for forming a portion of the groove and a closing device in the groove, the insert comprises at least one notched plate of thickness t1, the notched plate includes at least one notch for forming a flexible fence of the closing device.