Pivoted Dual Roller Tire Stitcher for Consistent Contact
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Solution Overview
Problem
Existing tire stitching technologies face inefficiencies due to the use of single narrow or wide rollers, which either fail to maintain consistent contact with the tire carcass, leading to air pockets or require longer stitching times, as they either closely follow the tire shape but are slow or cover more area but leave gaps.
Innovation Solution
A pivoted dual roller tire sidewall and body ply stitching apparatus with two toroidal rollers connected to separate supporting arms, allowing for adjustable overlap and offset to ensure consistent contact and conform to varying tire shapes, while rotating around a supporting member to apply equal pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a single narrow roller is used to stitch the tire carcass, then the roller can closely follow the tire shape, but the stitching speed is slow and air pockets may form
Solution Approach 1:
The single narrow roller is segmented into multiple rollers (first roller, second roller, and third roller) arranged in sequence. Each roller applies stitching pressure to a portion of the tire carcass, collectively covering the entire circumference. This segmentation enables faster stitching while maintaining consistent contact through the coordinated action of multiple rollers.
Solution Approach 2:
Multiple rollers are combined to work simultaneously on different portions of the tire carcass. The first roller, second roller, and third roller operate in parallel to stitch different sections, merging their individual stitching actions into a unified process that increases overall stitching speed while maintaining precision.
2Productivity
If a single wide roller is used to stitch the tire carcass, then the stitching area is larger, but the roller cannot maintain consistent contact and leaves air pockets
Solution Approach 1:
The wide roller is segmented into multiple smaller rollers arranged in sequence around the tire carcass. Instead of one wide roller attempting to contact the entire circumference, multiple smaller rollers are distributed along the stitching path, each maintaining consistent contact with its local portion of the tire carcass, thereby eliminating air pockets while covering the full area.
3Device complexity
If a fixed roller configuration is used, then the structure is simple, but it cannot adapt to varying tire dimensions and shapes
Solution Approach 1:
The roller configuration is made dynamic by allowing the rollers to pivot and adjust their positions. The supporting arms connecting the rollers to the frame enable the rollers to adapt their orientation and spacing to match varying tire dimensions and shapes, providing versatility without requiring a completely different apparatus for each tire type.
Solution Approach 2:
The spacing, orientation, and positioning parameters of the rollers are made adjustable. By changing the parameters of the roller configuration (such as the angle of supporting arms, distance between rollers, and pivot positions), the apparatus can adapt to different tire sizes and shapes while maintaining a relatively simple overall structure.
Data Source
AI summary
Various embodiments relate to a pivoted dual roller tire sidewall and body ply stitching apparatus for stitching tire components, the apparatus including a first roller having a toroidal shape and connected to a first supporting arm, a second roller having a toroidal shape and connected to a second supporting arm and a supporting member connected to the first roller, the second roller and a third supporting arm wherein the second supporting arm is longer than the first supporting arm and the first roller and the second roller are configured to pivot on the supporting member.