Tire Bead Ring Gripper With Ejecting Fingers for Centered Release
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Solution Overview
Problem
Existing grippers for tire bead rings often result in uneven placement due to the bead ring sticking to one engagement jaw, leading to deformation and improper centering during transfer, especially with the application of unvulcanized rubber.
Innovation Solution
A gripper design with multiple engagement jaws and ejecting fingers that apply a transverse force to prevent the bead ring from sticking, allowing simultaneous release from all jaws, ensuring centered and even placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If engagement jaws are moved inwardly to release the tire bead ring, then the bead ring should be released from all jaws simultaneously, but the thin layer of unvulcanized rubber causes the bead ring to remain stuck to one engagement jaw, resulting in uneven release and improper centering
Solution Approach 1:
The ejecting finger applies an ejecting force to the tire bead ring before the engagement jaws are moved inwardly to release it. This preliminary action ensures that the bead ring is actively pushed off the engaging fingers, preventing it from remaining stuck due to the thin layer of unvulcanized rubber, and enabling simultaneous and centered release from all engagement jaws
Solution Approach 2:
The ejecting finger acts as an intermediary element between the engagement jaws and the tire bead ring. It applies a transverse ejecting force that facilitates the release process, ensuring the bead ring is pushed off the engaging fingers uniformly from all sides, thereby achieving proper centering and simultaneous release
2Manufacturing precision
If engagement jaws are moved inwardly to release the tire bead ring, then the bead ring should be released, but it may deform to a non-circular shape due to remaining stuck to one engagement jaw
Solution Approach 1:
The ejecting finger applies an ejecting force to the tire bead ring before the engagement jaws are moved inwardly to release it. This preliminary action ensures that the bead ring is actively pushed off the engaging fingers, preventing it from remaining stuck due to the thin layer of unvulcanized rubber, and enabling simultaneous and centered release from all engagement jaws
Solution Approach 2:
The ejecting force is applied in a direction transverse to the movement direction of the engagement jaws, creating an asymmetric action that counteracts the potential asymmetric sticking problem. This transverse ejecting force ensures uniform release from all engagement jaws, preventing deformation of the bead ring into a non-circular shape
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 gripper ensures simultaneous and centered release of tire bead rings, preventing deformation and ensuring proper placement on the bead-apex assembly drum.
Implementation Method 1
the ejecting force and the radial friction associated therewith applied onto the tire bead ring is sufficient for preventing the tire bead ring from remaining stuck to the engaging fingers
Data Source
AI summary
Disclosed a gripper for gripping a tire bead ring to be transferred from a pick-up position to a placement position. The gripper includes two or more engagement jaws that are arranged at equal angular distance in a circumferential direction on the gripper, wherein each of the two or more engagement jaws is provided with an engaging finger for engaging the tire bead ring to be gripped, wherein the engagement jaws are configured to radially move between a remote position, in which the engaging fingers are remote from the tire bead ring to be gripped, and an engaging position, in which the engaging fingers engage the tire bead ring to be gripped, wherein the gripper is provided with an ejecting finger configured for ejecting a tire bead ring gripped by the gripper from the gripper.