Layered Sipe Blade Structure for Durable 3D Tire Sipes
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Solution Overview
Problem
Conventional sipe blades, which are formed by pressing a metal plate into a desired shape, face damage and durability issues when the shape is three-dimensionally changed to prevent block rigidity deterioration, limiting the freedom in sipe shape setting.
Innovation Solution
A sipe blade configured by overlapping multiple rolled material members with constant thickness, forming a tire molding mold that integrates these components to maintain shape freedom while preventing damage and durability deterioration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the sipe blade is formed by pressing a metal plate into a desired shape, then the sipe shape can be formed, but the sipe blade may be damaged or durability deteriorates when the mold is released
Solution Approach 1:
The sipe blade is divided into multiple members (first member and second member) that are overlapped and connected. Each member is formed from a rolled material with constant thickness, and they are connected through through-holes with insertion pieces. This segmentation allows the blade to maintain structural integrity while achieving complex sipe shapes.
Solution Approach 2:
The sipe blade uses a composite structure of multiple metal members overlapped and connected together. This composite construction combines the strength of individual rolled material members while enabling complex three-dimensional sipe shapes that would be impossible with a single pressed plate.
2Stability of the object's composition
If the shape of the sipe is set by three dimensionally changing, then block rigidity deterioration is prevented, but the sipe blade is damaged or durability deteriorates
Solution Approach 1:
By dividing the sipe blade into multiple overlapped members, the structure can accommodate three-dimensional sipe shapes without compromising blade integrity. The segmentation allows each member to maintain constant thickness and structural strength while collectively forming complex geometries needed to prevent block rigidity deterioration.
Solution Approach 2:
The invention enables three-dimensional sipe shaping by using multiple overlapped members with different configurations. The first and second members can be arranged in different orientations and depths, creating complex 3D sipe geometries that maintain block rigidity while avoiding blade damage during mold release.
3Ease of manufacture
If the sipe blade is formed as a single pressed metal plate, then manufacturing is simple, but the shape freedom of the sipe is restricted
Solution Approach 1:
The sipe blade is segmented into multiple members that can be individually formed from rolled materials and then assembled. This segmentation provides shape freedom for creating complex sipe geometries while maintaining manufacturing simplicity through standardized processes for forming and connecting the members.
Solution Approach 2:
By using multiple overlapped members instead of a single pressed plate, the invention achieves three-dimensional sipe shapes with greater design freedom. Each member can be configured independently to create complex geometries in multiple dimensions, vastly expanding the versatility of sipe shape options.
Data Source
AI summary
A sipe blade for molding a sipe, which is provided in a tire molding mold for molding a tire, the sipe blade being formed by overlapping a plurality of members that are made of a rolled material and that are individually formed to have a constant thickness.