Pneumatic Tire Two-Dimensional Code Positioning
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Solution Overview
Problem
Existing methods for engraving two-dimensional codes on pneumatic tires face challenges with positional misalignment, orientation issues, and size conformity, leading to defects in appearance and readability, as well as limitations in the region available for engraving due to tire size and aspect ratio.
Innovation Solution
A pneumatic tire design incorporating marks that define a quadrangular frame to ensure accurate positioning and orientation of the two-dimensional code, along with an inspection method using image processing to verify the size and alignment of the code, and a mold for precise engraving of the code on the tire surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a two-dimensional code is engraved on a tire side surface, then the tire can be effectively managed with more information, but relative positional misalignment may be generated between the pneumatic tire and an engraving device
Solution Approach 1:
The patent applies preliminary action by pre-forming marks (such as reference marks or positioning marks) on the tire side surface during the tire manufacturing process before the engraving of the two-dimensional code. These pre-formed marks serve as reference points that enable the engraving device to accurately locate and engrave the two-dimensional code at the correct position, thereby preventing positional misalignment while maintaining the information capacity benefits of the two-dimensional code.
2Loss of information
If the two-dimensional code is engraved to contain more information, then the tire management capability is improved, but the engraving position may be deviated from the predetermined position
Solution Approach 1:
The patent implements feedback by using pre-formed marks on the tire side surface as reference points that provide position information to the engraving device. The engraving device detects these marks and uses them as feedback to adjust its positioning, ensuring that the two-dimensional code is engraved at the correct location. This feedback mechanism allows the system to maintain both high information capacity in the two-dimensional code and accurate positioning despite variations in tire manufacturing.
3Ease of manufacture
If the two-dimensional code is made noticeable as a side pattern, then visual recognition is improved, but there may occur a defect in appearance such that the engraving is not located in an appropriate location
Solution Approach 1:
The patent applies preliminary action by pre-forming reference marks on the tire side surface during tire manufacturing, which serve as positioning guides for the engraving device. These marks enable accurate location determination before the two-dimensional code is engraved, ensuring that the code appears in the appropriate location while maintaining visual recognizability as a side pattern.
4Adaptability or versatility
If the region for engraving is limited by tire size and side pattern, then the adaptability to different tire sizes is challenged, but the target dimensions of the two-dimensional code need to be changed
Solution Approach 1:
The patent applies parameter changes by making the dimensions and positioning of the two-dimensional code adjustable based on the specific tire size and aspect ratio. The system can modify the code dimensions, spacing, and location parameters to adapt to different tire specifications while maintaining accurate engraving through the use of pre-formed reference marks that provide positioning feedback for each specific tire.
Data Source
AI summary
A tire side surface of a pneumatic tire includes a two-dimensional code in which a dot pattern is formed by two types of gray scale elements formed identifiable from each other by recesses and protrusions of the tire side surface, or a predetermined two-dimensional code arrangement region. The tire side surface further includes at least two marks formed in a protruded shape or a recessed shape, and the two marks are disposed on an identical position in a first direction of a tire radial direction and a tire circumferential direction and disposed separated from each other at different positions in a second direction of the tire radial direction and the tire circumferential direction to sandwich an outer edge of the two-dimensional code or the predetermined two-dimensional code arrangement region from the opposite sides in at least one of the tire radial direction or the tire circumferential direction.