Threadlike Adhesive Chuck Motion for Stable Extra Length Control
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Solution Overview
Problem
Existing adhesive sticking apparatuses face issues with adhesive tape deviation, twisting, and unstable extra length during application, particularly with threadlike adhesives, leading to poor sticking accuracy and difficulty in adhering to curved surfaces.
Innovation Solution
A threadlike adhesive sticking apparatus with a chuck unit and a moving mechanism that moves the chuck unit away from the nozzle after cutting the adhesive, utilizing rollers and contact units to stabilize the extra length and ensure accurate application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a roller is used to press and stick the adhesive tape, then the adhesive tape can be pressed against the adherend, but the adhesive tape may release from the roller or deviate within a width of the roller, resulting in poor sticking accuracy
Solution Approach 1:
The pressing function is segmented from the adhesive tape width control. The nozzle body itself acts as the pressing unit with its peripheral portion surrounding the tip end opening, while the holder provides width control through its front surface. This segmentation allows independent optimization of pressing force and position control, preventing adhesive tape deviation.
Solution Approach 2:
The holder acts as an intermediary component between the adhesive tape supply and the nozzle. The front surface of the holder serves as a guide to control the width of the adhesive tape, while the nozzle body provides the pressing function. This intermediary structure ensures accurate positioning without direct contact between the roller and adhesive tape that causes deviation.
2Adaptability or versatility
If the adhesive tape is tried to be stuck in a curved shape, then curved surfaces can be adhered to, but the adhesive tape may twist and cannot be stuck properly
Solution Approach 1:
The nozzle is designed with a movable structure that can dynamically adjust its position and orientation. The holder can move along guide rails to position the nozzle at different locations, and the nozzle body itself can rotate or tilt to match curved surfaces. This dynamic capability allows the adhesive tape to be applied to curved shapes without twisting, maintaining sticking accuracy.
Solution Approach 2:
The geometric parameters of the nozzle and holder can be changed to adapt to different surface curvatures. The nozzle opening angle, holder position, and nozzle orientation are adjustable parameters that can be modified to match the curvature of the adherend, enabling proper adhesive tape application on curved surfaces without twisting.
3Manufacturing precision
If a pressing roller is directly connected to the nozzle to pull up the threadlike adhesive, then the adhesive can be returned, but the threadlike adhesive is influenced by play of inner diameter of the nozzle and friction with the nozzle, making it difficult to stabilize the return length
Solution Approach 1:
The pressing roller is extracted from the direct connection to the nozzle. Instead, a separate pressing unit with a pressing member is used, which is controlled by a driving mechanism independent of the nozzle. This extraction eliminates the play and friction between the roller and nozzle, allowing stable control of the return length of the threadlike adhesive.
Solution Approach 2:
A driving mechanism with a driving wheel and driving shaft provides feedback control for the pressing unit. The pressing member can be precisely positioned and controlled to apply the required pressure to the threadlike adhesive, and the system can adjust the pressing force to maintain stable return length despite variations in adhesive properties or environmental conditions.
Data Source
AI summary
To stably ensure an extra length of a threadlike adhesive. A threadlike adhesive sticking apparatus includes: a chuck unit disposed upstream of a nozzle, configured to guide a threadlike adhesive to the nozzle, and configured to chuck the threadlike adhesive; and a moving unit configured to move the chuck unit, in a state of chucking the threadlike adhesive, to be farther away from the nozzle.