Cylindrical Rubber Member Forming Drum Holding Unit
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Solution Overview
Problem
Existing methods for manufacturing cylindrical rubber members, such as tire treads and side rubbers, face challenges in securely fixing the band-like rubber member's end portion to the forming drum, especially when using magnetic holding devices, which fail to provide a firm fixation across various forming drum specifications.
Innovation Solution
A device comprising a forming drum and a detachable holding unit with an arm and projection portion, where the arm and projection are brought closer to securely press and hold the rubber member's end portion on the drum's surface, allowing for rotation and firm fixation during winding, enabling versatility across different drum specifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a magnetic fixing member is used to hold the band-like rubber member, then the fixing device can be detached from the forming drum, but the rubber member cannot be firmly fixed to the forming drum
Solution Approach 1:
The patent introduces an intermediary pressing member that acts as a mediator between the holding device and the rubber member. This pressing member applies mechanical pressure to firmly fix the rubber member's end portion while being detachably attached to the forming drum via the holding device, thus resolving the contradiction between detachability and firm fixation.
2Reliability
If an adhesion pad is embedded in the forming drum to fix the rubber member, then firm fixation is achieved, but the adhesion pad cannot be installed depending on forming drum specifications
Solution Approach 1:
The patent segments the fixation system into a separate holding device with a pressing member that can be detachably attached to the forming drum. This segmentation allows the fixation mechanism to be removed and replaced, making it compatible with various forming drum specifications without requiring embedded adhesion pads in each drum.
3Adaptability or versatility
If the fixing member is separate from the forming drum, then versatility across different drum specifications is improved, but the rubber member cannot be securely fixed
Solution Approach 1:
The pressing member serves as an intermediary that bridges the gap between the detachable holding device and the rubber member. It provides the necessary mechanical pressure for secure fixation while maintaining the versatility of the detachable attachment system across different drum specifications.
Solution Approach 2:
The pressing member is designed to be movable and adjustable, allowing it to adapt to different drum specifications while maintaining firm contact with the rubber member. This dynamic capability enables both versatility and secure fixation.
Data Source
AI summary
A device and method are provided for manufacturing a cylindrical member. By inserting an edge of the forming drum on one side in a width direction between an arm and a projection of a holding unit disposed opposite one another and bringing the arm and the projection closer together in a direction in which a separation distance is reduced, a first end of the rubber member disposed on the outer circumferential surface of the forming drum is disposed between the arm and the projection, pressed by the arm, and held on the outer circumferential surface, and a holding unit attached to the forming drum is rotated about a drum shaft together with the forming drum; and the rubber member is wound around the outer circumferential surface and formed into a cylindrical shape.