Tire Mounting Head Adjusting Arrangement for Rim Diameter
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Solution Overview
Problem
Conventional tire mounting machines struggle to automatically accommodate a wide range of wheel rim diameters from 12 inches to 25 inches, leading to issues with tangential angle adjustments, which can result in improper tire mounting and potential damage, especially when handling extreme low profile tires.
Innovation Solution
A tire mounting apparatus with a rotating drive shaft and a mechanical adjusting arrangement that allows independent radial and tangential adjustments of the bead deflector and pressing roller, ensuring proper angular positioning for various tire sizes, eliminating the need for manual adjustments and reducing the risk of tool misalignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If the bead deflector and pressing roller are rigidly connected by a support arm for automatic adjustment, then the apparatus can automatically accommodate different wheel sizes, but the tangential angle positioning becomes inaccurate for extreme low profile tires
Solution Approach 1:
The support arm is divided into a first support arm for the bead deflector and a second support arm for the pressing roller, allowing independent adjustment of each tool's radial position while maintaining their respective tangential orientations. This segmentation enables automatic adjustment for different wheel sizes while preserving precise tangential angle positioning for each tool individually.
2Adaptability or versatility
If the mounting tools are adjusted to different working diameters, then various wheel sizes can be accommodated, but the tangential angle setting changes and causes improper positioning
Solution Approach 1:
The adjusting arrangement merges radial adjustment and tangential orientation functions into a unified mechanism. When the support arms are radially adjusted to different working diameters, the mechanism automatically maintains the correct tangential angle setting for each tool, allowing versatile wheel size accommodation while preserving positioning accuracy through coordinated movement.
3Manufacturing precision
If manual adjustments are made for switching tire sizes, then precise positioning can be achieved, but productivity and efficiency are reduced
Solution Approach 1:
The adjusting arrangement is designed to automatically adjust the bead deflector and pressing roller to the correct radial positions and tangential orientations when the mounting head is positioned for different wheel sizes. This self-adjusting capability eliminates the need for manual intervention, maintaining precise positioning accuracy while maximizing productivity by enabling rapid switching between different tire and wheel combinations.
Data Source
AI summary
A tire mounting apparatus includes a mounting head that is rotated by a drive shaft and slidably carries two adjusting plates. A push rod extends coaxially through the drive shaft, and a deflecting rod slopes laterally from the push rod through openings in the plates. The deflecting rod has two sloping actuating surfaces with different slope angles that engage in the openings of the plates to cause different sliding displacement of each plate by an axial actuation of the push rod. A bead deflector and a pressing roller are respectively mounted on the plates so they can be adjusted to different wheel rim diameters. A toggle lever and/or a pivot joint adjust a pivot angle of at least one of the tire mounting tools to remain tangential to the wheel rim circumference while it is slidingly adjusted to a different wheel diameter.