Tire Loading Device Standby Position Optimization
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Solution Overview
Problem
Existing tire testing machines face challenges in shortening the time required to feed a tire from a standby position to a spindle attachment position without increasing conveying speed, which affects testing cycle time.
Innovation Solution
A loading device that sets the standby position based on the front end of the tire rather than its center, allowing for a shorter conveying distance for tires with smaller diameters, utilizing a conveyor system with photoelectric sensors and a controller to position the tire accurately and efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the conveying speed is increased to shorten the feeding time, then the productivity is improved, but the safety and design constraints are violated
Solution Approach 1:
The patent changes the parameter of standby position definition from center-based to front-end-based. This parameter change allows the conveying distance to be optimized for different tire diameters, reducing feeding time without requiring increased conveying speed, thus maintaining safety constraints
2Productivity
If the conveying speed is increased to shorten the feeding time, then the productivity is improved, but the device complexity increases
Solution Approach 1:
The patent applies parameter changes by redefining the standby position based on the front end of the tire rather than its center. This simple parameter modification optimizes the conveying distance for small-diameter tires, reducing feeding time without complicating the conveyor system design
3Measurement precision
If the standby position is set based on the center of the tire, then the positioning accuracy is improved, but the feeding time increases for small-diameter tires
Solution Approach 1:
The patent applies local quality by differentiating the standby position definition based on tire characteristics. For small-diameter tires, the front end-based positioning provides optimal feeding distance, while maintaining adequate positioning accuracy for the specific application requirements
Solution Approach 2:
The patent changes the positioning parameter from center-based to front-end-based standby position. This parameter change optimizes the conveying distance for small-diameter tires, reducing feeding time while maintaining sufficient positioning accuracy for the testing application
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
Provided is a loading device that is provided in a tire testing machine including a testing station (30) provided with a spindle (31) attached with a tire (50) to be tested and feeds the tire (50) from a predetermined standby position to a testing position where the center of the spindle matches the center of the tire (50) in the testing station (30). The loading device includes: conveyors (1, 2) that convey the tire (50) from the standby position toward the testing position in a direction perpendicular to the axial direction of the tire; and positioning devices (6B, 20) that position the tire to be tested to a position, in which a front end of the tire in the feeding direction matches a point separated from the spindle by a predetermined distance, as the standby position. Setting of the standby position based on the position of the front end of the tire (50) in the feeding direction shortens the feeding distance and the feeding time and hence shortens the testing cycle time.