Bead-Lock Seal Sliding on Mounting Body for Tire Drum
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Solution Overview
Problem
Existing tire building machines face challenges in efficiently and accurately operating the bead-lock section, drum halves, and turn-up sections, which affects the overall tire building process.
Innovation Solution
The introduction of a bead-lock section with a plurality of bead-lock members, a bead-lock support, and a bead-lock drive, along with a drum half and a tire building machine that includes a crown-up section and a turn-up section, enhances the operational efficiency by providing precise control over the bead-lock and turn-up processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a bead-lock section with multiple bead-lock members is introduced to improve bead-locking precision, then manufacturing complexity increases
Solution Approach 1:
The bead-lock section is divided into multiple independent bead-lock members (at least three) distributed around the drum circumference, each capable of independent radial movement. This segmentation allows precise localized bead-locking while maintaining modular complexity management through standardized individual components.
Solution Approach 2:
The bead-lock members serve multiple functions: they provide radial constriction force on the tire bead, seal against the drum surface to maintain air pressure, and can be independently controlled for synchronized operation. This multi-functionality reduces the need for separate components and simplifies the overall system despite the multiple members.
2Ease of operation
If bead-lock members are made movable in radial direction to enable release and locking, then device complexity increases
Solution Approach 1:
A pneumatic drive system is used to move the bead-lock members radially between locked and released positions. Compressed air actuators provide controlled movement of each bead-lock member, enabling easy operation through pneumatic control while avoiding complex mechanical linkages or manual intervention.
3Reliability
If an air-tight seal is implemented over the bead-lock member to maintain pressure, then manufacturing complexity increases
Solution Approach 1:
A flexible sealing element (such as a rubber or elastomeric seal) is positioned to extend over the bead-lock member and maintain continuous contact with the drum surface and mounting body. This flexible film approach provides reliable air-tight sealing while accommodating the radial movement of the bead-lock member without requiring complex mechanical sealing arrangements.
Solution Approach 2:
The sealing element is designed to maintain continuous contact with the drum surface and mounting body throughout the radial movement of the bead-lock member. This continuous sealing action ensures uninterrupted air-tight containment from the crown-up section through the bead-lock member to the mounting body, regardless of the member's position.
Data Source
AI summary
A bead-lock section for use in a first drum half between a crown-up section and a turn-up section, includes a bead-lock seal arranged to extend over and seal the bead-lock member in an air-tight or substantially air-tight manner. The bead-lock seal has a first end that is arranged to be mounted in an air-tight or substantially air-tight manner to the crown-up section and a second end that is arranged to be mounted in an air-tight or substantially air-tight manner between the bead-lock member and a mounting body directly adjacent to the bead-lock member. The bead-lock seal is arranged to slide along the mounting body when the bead-lock member is moved between the release position and the bead-lock position.