Pivoting Pallets for Reliable Container Label Transfer
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Solution Overview
Problem
Existing methods for labeling containers face challenges due to the small contact surface area between convexly curved suction pads and containers, requiring complex movements and potentially leading to label misalignment and poor transfer quality.
Innovation Solution
The method involves pivoting pallets with elastic suction pads along a circular path to press labels onto containers, ensuring alignment within a specific angular segment, and adjusting overpressure to maintain central positioning, allowing for reliable and high-quality label transfer across varying container diameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If convexly curved suction surfaces are used on pallets, then the suction pads can hold labels reliably, but the contact area between labels and containers becomes small requiring complex coordinated swiveling and rotating movements
Solution Approach 1:
The suction pads are designed to be elastic and deformable, allowing them to adapt dynamically to the container surface. The pallets incorporate pivoting mechanisms that enable dynamic adjustment of the suction pad orientation during the labeling process, transforming from static convex surfaces to dynamically adaptable contact interfaces that maintain reliability while reducing movement complexity
Solution Approach 2:
The contact surface geometry is changed from fixed convex curvature to variable contact area through elastic deformation. By controlling the pressure and orientation parameters of the elastic suction pads, the system achieves reliable label holding with simplified movement requirements, as the elastic material adapts its shape to match the container surface
2Productivity
If complex coordinated swiveling and rotating movements are used for label transfer, then labels can be transferred to containers, but the alignment precision and transfer quality deteriorate due to movement errors
Solution Approach 1:
The complex coordinated swiveling and rotating movements are replaced by a simplified mechanism where elastic suction pads directly press against the container surface. The elastic deformation of the pads absorbs misalignment errors, eliminating the need for precise multi-axis coordination and significantly improving label alignment precision while maintaining transfer capability
Solution Approach 2:
Elastic suction pads act as flexible elements that conform to the container surface. This flexibility compensates for positioning errors and maintains consistent contact during label transfer, achieving high precision without complex movement coordination. The thin film-like elastic material adapts to surface variations while preserving label alignment
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
This approach ensures reliable label transfer with minimal movement errors, enabling efficient and high-quality labeling of containers by maintaining central alignment and controlled overpressure during the transfer process.
Implementation Method 1
The labels are removed from the label magazine and held on the pallets by means of suction pads... which are subjected to a suitable vacuum via the pallets to attract the labels
Implementation Method 2
labels are transferred to the containers from elastic suction pads with convexly curved contact surfaces... the suction pads are pressed onto the containers
Data Source
Figure 1
Figure 2A
Figure 2B
AI summary
A method and a device (1) for labeling containers (2) are described. Accordingly, labels (6) are transferred from elastic suction pads (5) arranged along pallets (4) moving on a circular track to containers transported on a container carousel, with the pallet being pivoted in or against its direction of travel. By pivoting the pallets in a pressing section (9) of the circular track such that the central axes of the pallets are essentially aligned with the central axes of the associated containers and the suction pads are pressed against the containers, the labels can be pressed onto the containers over a relatively large area and for a relatively long period of time, thus ensuring a particularly reliable and high-quality transfer to the containers.