Cover Tape Feed Device for Bead Core
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Solution Overview
Problem
Conventional cover tape feed devices cause a decrease in the width of the cover tape when it is longitudinally elongated while being fed onto a bead core, leading to insufficient coverage of the bead core's surface.
Innovation Solution
A cover tape feed device with a reciprocating conveyance member and a transmission mechanism that converts movement into rotation of a guide roller, ensuring the cover tape is conveyed onto the bead core without resistance, maintaining its necessary width for coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the cover tape is fed onto the bead core by pulling it forward, then the cover tape is conveyed onto the bead core, but the cover tape undergoes longitudinal elongation causing width decrease
Solution Approach 1:
A guide roller is introduced as an intermediary component between the cover tape source and the bead core. The guide roller receives the cover tape and guides it onto the bead core through rolling contact, eliminating the direct pulling action that causes elongation. The guide roller acts as a mediator that transforms the feeding mechanism from tension-based to rolling-based, preserving tape width while maintaining feeding efficiency.
Solution Approach 2:
The conventional pulling-based mechanical feeding system is replaced with a rolling-based system using the guide roller. Instead of applying tensile force to pull the tape forward, the guide roller uses rotational motion to convey the tape onto the bead core. This substitution of mechanical principle eliminates the elongation effect while maintaining the tape feeding function.
2Ease of operation
If the cover tape is pulled forward during feeding, then the cover tape is conveyed onto the bead core, but the width of the cover tape decreases
Solution Approach 1:
The guide roller serves as a mediator that simplifies the feeding operation by providing a smooth rolling contact surface. The operator only needs to initiate the rolling motion, and the guide roller automatically conveys the tape onto the bead core without requiring continuous pulling or tensioning, thereby easing operation while preserving tape width.
Solution Approach 2:
The complex tensioning and pulling mechanism is replaced with a simple rolling mechanism. The guide roller converts the feeding operation from an active pulling process to a passive rolling process, making the operation easier while preventing tape width reduction through the rolling contact mechanism.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device effectively prevents the width reduction of the cover tape during feeding, allowing it to maintain a sufficient width for adhering to and covering the bead core's surface, thereby ensuring proper coverage.
Implementation Method 1
a transmission mechanism that converts movement from the retracted position to the advanced position of the conveyance member into rotation in a tape feeding direction of the guide roller
Implementation Method 2
the guide roller steadily rotates in the tape feeding direction, and the cover tape is delivered onto the bead core with no resistance
Data Source
AI summary
A cover tape feed device is provided to feed a cover tape onto the surface of a bead core. The cover tape feed device includes a conveyance member that is capable of reciprocating between an advanced position and a retracted position. The conveyance member moves from the retracted position to the advanced position while supporting the cover tape and conveys the cover tape onto the surface of the bead core. The cover tape feed device includes a guide roller for guiding a feed of the cover tape, which is arranged to be rotational at a position farther from the bead core than the conveyance member is from the bead core, and a transmission mechanism that converts movement from the retracted position to the advanced position of the conveyance member into rotation in a tape feeding direction of the guide roller.


