Labelling Device Air Suction Pressing Mechanism
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Solution Overview
Problem
Existing labelling devices struggle to securely fix labels in the transfer position, leading to potential slippage and imprecise application onto packages.
Innovation Solution
The labelling device employs a single air stream that generates both suction and pressing forces on the label, ensuring optimal fixation in the transfer position. This air stream is used to create a negative pressure for suctioning the label and an excess pressure for pressing it onto the label suction assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a single air stream is used for both suction and pressing the label, then energy efficiency is improved and device complexity is reduced, but the suction force and pressing force cannot be independently optimized
Solution Approach 1:
The patent combines the suction function and pressing function into a single air stream system. The label suction assembly generates one air stream that simultaneously creates negative pressure for suction through suction openings and positive pressure for pressing through a blow-off head, eliminating the need for separate compressed air supplies and reducing energy consumption.
Solution Approach 2:
The single air stream generated by the label suction assembly serves multiple functions: it creates suction force through suction openings to hold the label, generates pressing force through the blow-off head to apply the label, and can be directed to different locations (transfer position or package surface) depending on the operational phase, making the system multi-functional.
2Adaptability or versatility
If separate air streams are used for suction and pressing, then independent optimization of suction force and pressing force is possible, but device complexity increases and energy efficiency decreases
Solution Approach 1:
The patent merges multiple air supply functions into a single label suction assembly that generates one air stream. This eliminates the complexity of having separate compressed air supplies for suction and pressing, reducing the number of components and simplifying the overall system architecture.
Solution Approach 2:
The label suction assembly acts as an intermediary device that generates a single air stream which is then distributed to perform multiple functions. Instead of having multiple independent air supplies, the label suction assembly mediates between the single air source and the multiple functions (suction and pressing) that need to be performed.
3Device complexity
If the label is held only by suction force, then the system is simpler, but the label may not be securely fixed and may slip during transfer
Solution Approach 1:
The patent combines suction force and pressing force into a single fixation mechanism. The label suction assembly generates both forces simultaneously through its single air stream, creating a more reliable label fixation system that prevents slippage during transfer while maintaining relative system simplicity.
Solution Approach 2:
The pressing force is applied in advance through the blow-off head to ensure the label is securely fixed to the package surface before the transfer is completed. This preliminary pressing action prevents the label from slipping or misaligning during the transfer process, improving reliability.
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
The solution effectively secures the label in the transfer position, ensuring precise transfer to the package surface. Additionally, the energy efficiency is enhanced by using the same air stream for both functions and eliminating the need for an external compressed air supply.
Implementation Method 1
The same air stream on the one hand generates a negative pressure in the label suction assembly, which effects suctioning of the label onto the label suction assembly and accordingly the suction force exerted on the label
Implementation Method 2
the same air stream generates an excess pressure on the opposite side of the label, which effects pressing of the label onto the label suction assembly and accordingly the pressing force exerted on the label
Implementation Method 3
the label suction assembly is adapted to generate a first air stream and to guide the first air stream in such a manner that both a suction force and a pressing force are exerted on the label
Data Source
AI summary
The invention relates to a labelling device, in particular a price-displaying device, for labelling individual packages (2), comprising: a feed assembly (3) for transporting particular packages (2); a label-dispensing assembly (9) for dispensing a label (8) that can be detached from a material strip (10) in a dispensing direction as far as a transfer position; and a label-application assembly (13) for applying the label (8) dispensed in the transfer position onto the surface of the package (2); wherein the label application assembly (13) comprises a label-suction assembly (15) which picks up a label (8) dispensed by the label-dispensing assembly (9) and holds it in the transfer position, from which position the label (8) is transferred to the surface of the package (2). According to the invention, the label-suction assembly (15) is designed to generate a first airflow and to conduct the airflow such that both a suction force and a compressive force are exerted on the label (8) in the transfer position.