Tire Bead Assembly Using Pre-Combined Rubber and Textile Strips
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Solution Overview
Problem
The existing methods for producing pneumatic vehicle tires are time- and labor-intensive, leading to increased production costs and capacity losses due to the need for precise synchronization and high tensile forces on strip-shaped textile strips during assembly, which can cause fiber deflection and affect the quality of the tire bead.
Innovation Solution
The method involves pre-cutting tire components into required lengths to form a combination component comprising a rubber strip and two strip-shaped textile strips, which are then placed and connected on a tire building drum in a single operation, reducing assembly time and labor while maintaining fiber orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If tire components are fed individually one after another to the tire building drum, then the assembly process can be completed with standard equipment, but the production time increases and labor costs increase
Solution Approach 1:
The patent combines multiple tire components (rubber strip and two textile strips) into a single pre-assembled combination component that is fed to the tire building drum in one operation. This merging of components and operations directly increases assembly speed and reduces production time by eliminating sequential handling of individual strips.
Solution Approach 2:
The tire components are pre-cut to required lengths and pre-assembled into the combination component before being fed to the tire building drum. This preliminary preparation work is performed upstream, allowing the main assembly operation to proceed more quickly and efficiently without compromising the precision of individual component dimensions.
2Manufacturing precision
If tire components are fed individually with precise synchronization, then assembly accuracy can be maintained, but machine complexity and labor costs increase
Solution Approach 1:
By combining multiple strips into a single combination component, the patent eliminates the need for complex synchronization systems that would be required to coordinate the feeding of multiple individual components. The single component approach maintains fiber orientation accuracy while significantly simplifying the feeding mechanism.
3Ease of operation
If high tensile forces are applied during feeding and placing of textile strips, then the strips can be positioned on the drum, but fiber deflection occurs and bead quality deteriorates
Solution Approach 1:
The patent creates a composite combination component consisting of a rubber strip and two textile strips bonded together. This composite structure provides mechanical support that distributes tensile forces, preventing excessive stress on the textile fibers and minimizing fiber deflection during the feeding and placement operation on the tire building drum.
4Manufacturing precision
If individual tire components are fed and placed sequentially, then each component can be positioned accurately, but production costs increase due to labor and machine time
Solution Approach 1:
The patent merges multiple positioning operations into a single operation by feeding the pre-assembled combination component as one unit. This approach maintains the positioning accuracy of individual components while significantly reducing labor requirements and machine time, thereby lowering production costs.
Data Source
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AI summary
The invention relates to a method for producing a pneumatic vehicle tire having a tire bead. According to the method, tire components are fed to a tire building drum (30) to form the tire bead, are placed on same and are joined to each other in the region of their ends, wherein: the tire components comprise at least one rubber strip (11a) and strip-like textile strips (11b, 11c), the tire components, prior to being fed to the tire building drum (30), are cut to pieces of the required length, placed on top of each other and interconnected to a combined component (11) and the combined component (11) is then fed to the tire building drum (30).