Tire Bead Ring Gripper With Transverse Ejection for Even Placement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing grippers for tire bead rings often result in uneven placement due to the bead ring sticking to engagement jaws, leading to deformation and improper centering during transfer.
Innovation Solution
A gripper with multiple engagement jaws and ejecting fingers that apply a force transverse to the movement direction 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 of the engagement jaws, 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 ejected from under the engagement jaws before the jaws begin their inward movement, preventing the bead ring from remaining stuck to any single jaw and ensuring simultaneous release from all jaws for proper centering
2Shape
If engagement jaws are moved inwardly to release the tire bead ring, then the bead ring should be released, but the bead ring may deform to a non-circular shape due to remaining stuck to one of the engagement jaws
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 ejected from under the engagement jaws before the jaws begin their inward movement, preventing the bead ring from remaining stuck to any single jaw and ensuring simultaneous release from all jaws for proper centering
3Strength
If multiple engagement jaws are used to grip the tire bead ring, then the gripping capacity is increased, but the complexity of the gripper structure increases
Solution Approach 1:
The ejecting function is merged with the engagement jaw structure by integrating the ejecting finger into the engagement jaw assembly. This allows the same structural element (engagement jaw) to perform multiple functions (gripping and ejecting) without requiring a completely separate ejecting mechanism, thereby increasing gripping capacity while limiting the increase in overall structural complexity
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 accurate 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
Figure 1
Figure 2
Figure 3A~3B
AI summary
The invention relates to a gripper for gripping a tire bead ring to be transferred from a pick-up position to a placement position, the gripper (1) comprising two or more engagement jaws (12) that are arranged at equal angular distance in a circumferential direction on the gripper, wherein each of the two or more engagement jaws (12) is provided with an engaging finger (13) for engaging the tire bead ring (2) to be gripped, wherein the engagement jaws are configured to radially move between a remote position, in which the engaging fingers (13) 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 (35) configured for ejecting a tire bead ring gripped by the gripper from the gripper.