Manual Tape Applicator with Angled Reels to Reduce Coating Stress
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Solution Overview
Problem
Existing manual devices for applying coatings using tape often damage the coating before application, particularly due to mechanical stress as the tape travels from the supply reel to the applicator tip.
Innovation Solution
A manual device with a supply reel and take-up reel mounted on bearings arranged at angles greater than or equal to 30° relative to the applicator tip's median plane, minimizing twist and stress on the tape, and eliminating guide elements to reduce friction and maintain tape alignment, allowing for a more natural and stress-free application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the tape travels from the supply reel to the applicator tip through conventional guide elements, then the tape can be directed to the application point, but the coating on the tape is damaged due to mechanical stress and friction
Solution Approach 1:
The patent removes conventional guide elements (rollers, guides, tensioning mechanisms) from the tape path. The tape travels directly from the supply reel to the applicator tip without intermediate contact points, eliminating the sources of friction and mechanical stress that damage the coating.
Solution Approach 2:
Instead of using active guide elements to direct the tape, the invention uses the natural geometry of the reel arrangement and tape winding to guide the tape automatically. The tape follows its own winding path from the supply reel to the applicator, inverting the conventional approach of using external guides.
2Manufacturing precision
If guide elements are used to direct the tape, then the tape can be aligned with the applicator tip, but friction increases and tape alignment is compromised
Solution Approach 1:
The tape aligns itself with the applicator tip through the geometric arrangement of the supply reel and applicator. The natural tension and winding path of the tape provide self-alignment without requiring external guide elements, eliminating friction while maintaining precision.
Solution Approach 2:
The patent arranges the supply reel and take-up reel at specific angles (≥30°) relative to the applicator tip's median plane, creating a three-dimensional tape path that naturally guides the tape to the correct position without friction-prone contact guides.
3Reliability
If the bearings are arranged at angles greater than or equal to 30° relative to the applicator tip's median plane, then mechanical stress on the tape is minimized, but the device complexity increases
Solution Approach 1:
The supply reel and take-up reel are positioned asymmetrically at specific angles (≥30°) relative to the applicator tip's median plane. This asymmetric arrangement creates an optimal tape path that minimizes stress on the coating while the simplicity of the bearing mounting compensates for the geometric complexity.
Solution Approach 2:
The patent specifies a minimum angle parameter (≥30°) for the bearing arrangement relative to the applicator tip's median plane. This parameter optimization minimizes the mechanical stress on the tape while maintaining a relatively simple device structure through straightforward bearing mounting.
Data Source
AI summary
A manual device for applying a coating to a support by means of tape, in which a first angle formed between the median plane of the applicator tip and the half-line extending from the middle of the application edge of the applicator tip and passing through the point arranged at the intersection of the outer periphery of the first winding and the radius of the first winding perpendicular to the median plane, is between −1° and 10°, whereas a second angle formed between the median plane and the half-line extending from the middle of the application edge and passing through the point arranged at the intersection of the outer periphery of the second winding and the radius of the second winding perpendicular to the median plane, is between 1° and 10°.