Convex Deflection Roller for Carrier Tape Height Control
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Solution Overview
Problem
Existing labeling machines face challenges in accurately guiding carrier tapes to maintain a constant height, especially when dealing with narrow, non-rectangular labels and round objects, leading to significant height deviations and compromised labeling quality.
Innovation Solution
The implementation of a device with a deflection roller system featuring at least one convex-shaped deflection roller upstream and downstream of the dispensing edge, allowing the carrier tape to self-align at a constant target height, eliminating the need for additional guides and maintaining accurate label placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a sharp dispensing edge is used to detach labels from the carrier tape, then label detachment is effective, but carrier tape height stability deteriorates
Solution Approach 1:
The dispensing blade is divided into multiple functional zones: a first section with a first angle (e.g., 45°) for gentle carrier tape guidance and height stabilization, and a second section with a second angle (e.g., 90°) for effective label detachment. This segmentation allows the same blade to perform both functions without compromise.
Solution Approach 2:
Different sections of the dispensing blade have different geometric properties tailored to specific functions. The first section has a shallower angle optimized for maintaining carrier tape height, while the second section has a steeper angle optimized for label detachment. Each local region of the blade is optimized for its specific task.
2Manufacturing precision
If stops or collars are used to guide carrier tape at desired height, then height positioning is improved, but carrier tape deformation occurs
Solution Approach 1:
The invention replaces the mechanical stop/collar guidance system with a geometric guidance system using the angled dispensing blade. The carrier tape is guided by the inclined surface of the blade rather than being constrained by stops, eliminating deformation while maintaining height control.
3Adaptability or versatility
If a twisted dispensing blade is used for round objects, then label application to curved surfaces is improved, but carrier tape guidance precision deteriorates
Solution Approach 1:
The system allows dynamic adjustment of the dispensing blade orientation. The blade can be rotated or tilted to match the curvature of different objects (flat, cylindrical, spherical). This dynamic adaptability maintains both carrier tape guidance precision and compatibility with various object geometries.
Solution Approach 2:
Before label detachment, the carrier tape and labels are pre-positioned and pre-guided by the angled sections of the dispensing blade. This preliminary geometric guidance ensures height stability is established before the labels are detached, even when using twisted configurations for round objects.
Data Source
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AI summary
The device (1) has a label dispensing unit (4) with a dispensing edge (41), over which a carrier tape (2) is deflected such that it is fixed on an object (6). A convexly shaped deflection roller (5) is arranged in a conveyor path (20) of the carrier tape such that the carrier tape is guided at a constant nominal height (H) in a self-aligning manner.