Coupled Bobbin Unwinding for Dual Sidewall Insert Deposition
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods struggle to simultaneously deposit two elongated elements with different properties on a forming drum without requiring redesign of extrusion and building lines, which are essential for producing self-supporting tires.
Innovation Solution
A method involving a coupling device that allows two storage bobbins, each holding a different elongated element, to be rotatably coupled about a common axis, enabling simultaneous unwinding and deposition of elements with varying winding diameters and unwinding lengths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If two storage bobbins with different elongated elements are to be simultaneously unwound and deposited on a forming drum, then the ability to produce different sidewall inserts is improved, but the complexity of the unwinding and deposition process increases due to different winding diameters and unwinding lengths
Solution Approach 1:
A coupling device acts as an intermediary mechanism between the two storage bobbins and the forming drum. This device coordinates the unwinding of two elongated elements with different properties, managing the differences in winding diameters and unwinding lengths through a mediating control system that ensures proper synchronization during deposition.
Solution Approach 2:
The system employs dynamic adjustment mechanisms that allow the unwinding process to adapt to different elongated element properties. The coupling device can dynamically control the rotation speeds and unwinding rates of the two storage bobbins, enabling the system to handle varying winding diameters and lengths in real-time during the deposition process.
2Ease of manufacture
If existing extrusion and building lines are to be used without redesign, then cost is reduced, but the capability to simultaneously deposit elongated elements with different properties is limited
Solution Approach 1:
The coupling device is designed as a universal mechanism that can handle multiple types of elongated elements with different properties on a single system. By incorporating this multi-functional device, existing extrusion and building lines gain the capability to deposit different sidewall inserts without requiring separate dedicated lines for each element type, thus avoiding costly redesign while enhancing versatility.
3Productivity
If elongated elements with different winding diameters are unwound simultaneously, then productivity is maintained, but manufacturing precision is compromised due to unequal unwinding lengths
Solution Approach 1:
The coupling device incorporates feedback mechanisms that continuously monitor the unwinding process of both elongated elements. By detecting differences in unwinding lengths caused by varying winding diameters, the system adjusts the rotation speeds and unwinding rates in real-time to maintain equality, thus preserving manufacturing precision while maintaining simultaneous operation for high productivity.
Data Source
Figure 1
Figure 2
Figure 3~6
AI summary
The invention relates to a method for arranging elongated elements to be used in a process for building tyres for vehicle wheels, comprising: arranging a first winding support (11) with a first elongated element (100) of a first type wound on it; arranging a second winding support (12) with a second elongated element (101) of a second type different from the elongated element of the first type wound on it; arranging a coupling device (40) comprising a first coupling body (41) and a second coupling body (42) rotatable with respect to one another about a rotation axis (X); arranging the first winding support (11) on the first coupling body (41) and the second winding support (12) on the second coupling body (41). The invention also relates to an apparatus (10) for arranging elongated elements to be used in a process for building tyres for vehicle wheels.