Green Tire Removal Device with Radially Movable Retaining Elements
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Solution Overview
Problem
The existing method for manufacturing green tires using a building drum and transfer device is time-consuming as the removal device's projecting elements are placed around the tire only after completion, delaying the manufacturing process.
Innovation Solution
The method involves placing the projecting elements of the removal device around the building drum before the last manufacturing steps are completed, allowing earlier positioning and reducing overall manufacturing time by enabling the transfer device to be positioned around the drum earlier, with radially movable retaining elements ensuring the elements engage the tire securely without causing collapse.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the projecting elements are placed around the green tyre only after completion, then the green tyre quality is maintained, but the manufacturing time is extended
Solution Approach 1:
The removal device with projecting elements is positioned around the building drum in advance, before the green tyre manufacturing is completed. This preliminary positioning allows the removal device to be ready for immediate action once manufacturing finishes, eliminating waiting time while the projecting elements remain non-intrusive during the manufacturing process.
2Loss of time
If the projecting elements are placed early around the building drum, then the manufacturing time is reduced, but the risk of tyre collapse increases
Solution Approach 1:
The retaining elements are designed to be radially movable between an inactive position (spaced apart) during manufacturing and an active position (engaging the tyre) for removal. This dynamic adjustment allows the system to provide structural support only when needed, preventing tyre collapse during the critical removal phase while avoiding interference during manufacturing.
Solution Approach 2:
The removal device uses multiple discrete retaining elements distributed around the building drum, each capable of independent radial movement. This segmentation allows selective engagement at different positions and times, providing localized support where needed without constraining the overall tyre structure during manufacturing.
3Stability of the object's composition
If the retaining elements are kept in active position throughout, then the green tyre is protected from collapse, but the device complexity increases
Solution Approach 1:
The retaining elements incorporate radial movement capability, transitioning between inactive (spaced apart) and active (engaging) positions. This dynamic feature adds only minimal mechanical complexity while providing substantial benefit by preventing tyre collapse only when necessary, during the removal operation.
Data Source
AI summary
Method for manufacturing a green tire using a building drum and a transfer device. In the method tire components are arranged on a building drum. In one step of the method the transfer device is placed around the building drum. The method further comprises a step during which a last manufacturing process for a green tire is carried out on the building drum, and a removal step during which a removal device removes the green tire from the building drum, wherein the removal device is provided with projecting elements that can be placed up to a distance from and around the outer circumference of the green tire and which projecting elements can be placed such so as to engage the outer side of the green tire. The removal step further comprises during the step in which the transfer device is placed around the building drum, placing the projecting elements up to a distance from and around the outer circumference of the building drum.