Tire Inner Surface Band Attachment via Segmented Bonding
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Solution Overview
Problem
Existing methods for attaching band-like sound absorbing members to tire inner surfaces are inefficient, as they apply excessive tensile force, leading to damage and inadequate bonding.
Innovation Solution
An attaching device and method that uses a holder, support arm, paddle, delivery-driving unit, and rotation-driving unit to pressure-bond a band-like member in a wound state to the tire inner surface, alternating bonding and dispensing operations to avoid extra tensile force and ensure secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the attaching roller is pressed strongly against the band-like sponge member while being rolled, then the pressing force is increased, but an extra tensile force is applied to the band-like sponge member causing it to be easily broken
Solution Approach 1:
The attachment process is divided into two separate operations: a bonding operation where the paddle presses the dispensed portion without rotation, and a dispensing operation where rotation occurs without pressing. This segmentation allows each operation to perform its function without causing harm - pressing without tensile stress during bonding, and rotation without excessive force during dispensing.
Solution Approach 2:
The attaching device alternates between the bonding operation and the dispensing operation in a periodic cycle. During the bonding operation, the paddle moves close to press and bond the dispensed portion while rotation is stopped. During the dispensing operation, the paddle moves away and rotation resumes to dispense the next portion. This periodic alternation ensures that pressing and rotation never occur simultaneously, preventing tensile force application.
2Productivity
If the band-like sponge member is sequentially removed from the sponge holding frame and attached by an attaching roller, then the attachment process can be continuous, but the band-like sponge member is easily broken due to extra tensile force
Solution Approach 1:
The continuous attachment process is segmented into alternating bonding and dispensing operations. The bonding operation maintains continuity by pressing and bonding the dispensed portion, while the dispensing operation prepares the next portion without applying tensile force. This segmentation allows continuous production while protecting the band-like member from damage.
Solution Approach 2:
The system employs periodic alternation between bonding and dispensing operations to maintain continuous attachment while preventing damage. The periodic cycle ensures that at any given time, either pressing occurs without rotation or rotation occurs without pressing, eliminating the conditions that cause tensile force and member breakage.
Data Source
AI summary
Provided is an attaching device and a method for attaching a band-like member to a tire inner surface. A holder that holds the band-like member in a wound state and a paddle are disposed in an inner portion of a tire, and a dispensed portion is pressure-bonded to the inner surface by repeatedly performing: a bonding operation in which a predetermined length dispensed from the band-like member in a wound state toward the inner surface is pressed, by moving the paddle close to the inner surface with no relative rotation of the tire in the circumferential direction with respect to the holder, and is pressure-bonded to the inner surface and a dispensing operation in which, after the bonding operation, the paddle is moved away from the inner surface, and together with relatively rotating the tire in the circumferential direction, a new dispensed portion is formed.