Movable Sleeving Head for Shrink Label Ejection
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Solution Overview
Problem
Existing devices for applying shrink labels to containers face inefficiencies in ejecting incorrect or faulty labels, leading to increased costs and remnants of film at connection points, resulting in a high number of defective containers.
Innovation Solution
A device with a movable sleeving head that applies shrink labels transversely to containers, allowing for pre-ejection of faulty labels and simultaneous application to multiple rows using multiple heads moving in opposite directions to minimize vibrations and optimize throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If static applicators are used with containers moving through them, then the device structure is simple, but the ejection of faulty shrink labels is difficult and costly
Solution Approach 1:
The patent inverts the traditional approach by making the applicator movable instead of stationary. The applicator moves with the container along the transport direction, allowing the faulty label to be ejected in the reverse direction (opposite to transport) directly at the application point, eliminating the need for complex post-ejection systems.
Solution Approach 2:
The patent introduces an intermediary mechanism (the movable applicator with ejection capability) that facilitates the removal of faulty labels. This intermediary component enables direct ejection at the point of application, simplifying the overall system while improving operational ease.
2Productivity
If multiple rows of containers are processed simultaneously with multiple applicators, then productivity increases, but the number of faulty containers increases due to film remnants at splices
Solution Approach 1:
The patent applies preliminary action by detecting and ejecting faulty shrink labels immediately at the point of application, before they are shrunk onto the containers. This prevents defective labels from being processed further and eliminates the need to eject containers later, maintaining high productivity while ensuring label quality.
Solution Approach 2:
The patent implements a feedback mechanism where the applicator monitors the shrink label application process in real-time and immediately ejects faulty labels. This closed-loop control ensures that defective labels are identified and removed promptly, maintaining both high productivity and label application quality across multiple container rows.
3Adaptability or versatility
If the shrink label is changed on the machine, then product variety is increased, but containers with wrong labels are produced and must be ejected
Solution Approach 1:
The patent applies preliminary action by detecting and ejecting faulty shrink labels immediately at the point of application, before they are shrunk onto the containers. This prevents defective labels from being processed further and eliminates the need to eject containers later, maintaining high productivity while ensuring label quality.
Solution Approach 2:
The patent implements a feedback mechanism where the applicator monitors the shrink label application process in real-time and immediately ejects faulty labels. This closed-loop control ensures that defective labels are identified and removed promptly, maintaining both high productivity and label application quality across multiple container rows.
4Productivity
If a large number of applicators are provided to achieve high throughput, then productivity increases, but device complexity and cost increase
Solution Approach 1:
The patent applies dynamics by making the applicator movable along the transport direction rather than stationary. This single movable applicator can service multiple container positions sequentially, achieving the throughput of multiple static applicators with a single unit, thereby reducing device complexity and cost while maintaining high productivity.
Data Source
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AI summary
Device and method for applying shrink labels 4 to containers 3, comprising a transport system for moving the containers 3 into the working area of at least one sleever head 1, which applies the shrink label 4 to each container 3, wherein the sleever head 1 is movable in a direction B transverse to the transport direction A in order to successively provide each container 3 of a series of containers 3 with the shrink label 4, wherein the series of containers 3 is arranged in transverse direction B to the transport direction A and wherein the sleever head 1 is movable beyond the series of containers 3 in direction B perpendicular to the transport direction A in order to reject defective shrink labels 4.