Transfer Drum Movable Sectors for Precise Reusable Container Labeling
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Solution Overview
Problem
Existing labeling machines face difficulties in applying labels to reusable containers due to misalignment and bulging issues during the transition from the cutting roller to the transfer drum, leading to potential interference with the glue roller and compromising the operation.
Innovation Solution
A labeling machine with a transfer drum featuring movable sectors that adjust their position to ensure correct application of dissolvable adhesive, preventing misalignment and bulging by using actuation means to control the movement of the leading skid relative to the glue roller.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the transfer drum uses a fixed cylindrical sector structure, then the label transfer process is simple, but misalignment and bulging occur during label transition causing operational issues
Solution Approach 1:
The patent applies the dynamics principle by making the transfer drum sectors movable rather than fixed. The sectors can radially move between a retracted position (avoiding interference with the glue roller) and an extended position (ensuring proper label alignment and transfer). This dynamic adjustment resolves the contradiction by allowing the system to adapt its structure during operation to achieve precise label alignment without permanent structural complexity.
2Manufacturing precision
If the sectors are positioned to ensure correct label application, then label alignment is improved, but interference with the glue roller occurs
Solution Approach 1:
The movable sector mechanism allows the sectors to dynamically adjust their radial position. During the label transfer phase, sectors extend to ensure accurate label application. During the glue application phase, sectors retract to avoid interfering with the glue roller. This temporal separation of functions resolves the contradiction between achieving precise label application and avoiding interference with other components.
3Adaptability or versatility
If the transfer drum rotates in opposite direction to reduce interference, then space utilization is improved, but label transfer reliability decreases due to misalignment
Solution Approach 1:
The opposite rotation direction allows better space utilization and avoids interference with the carousel. The movable sectors compensate for potential alignment issues by dynamically adjusting their position during the label transfer process, ensuring reliable label application despite the counter-rotational movement. This combines the benefits of space-efficient design with reliable label transfer.
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
Ensures reliable and efficient label application on reusable containers by minimizing misalignment and bulging, facilitating easy removal for reuse.
Implementation Method 1
the drum has an outer side surface at the substantially cylindrical sectors with a radius of curvature that is constant and centered on the rotation axis of the drum... by virtue of the presence, on its side surface, of air intake ports, which make it possible to retain the labels until their transfer onto the containers
Implementation Method 2
a dissolvable adhesive material, which loses its adhesive characteristics after a predefined time interval which is sufficiently long to allow the application of labels to containers but not so long as to impede the easy removal of the labels
Data Source
AI summary
A labeling machine for applying labels to reusable containers includes at least one labeling assembly that includes a transfer drum provided peripherally with at least one sector that receives from a cutting roller a label; upstream of the labeling assembly there are spraying elements for spraying an adhesive material at least on the region of the containers that is adapted to receive the labels; the sector has at least one movable portion which can move between a first working condition, wherein the front end of the sector is arranged close to the axis of the transfer drum, and a second working condition, wherein the front end of the sector is arranged in a position that is spaced apart from the axis of the transfer drum, in order to allow the adhesion of the leading end of the label to the corresponding container.