Labeling Unit Pneumatic Line Modular Connectors
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Solution Overview
Problem
The existing labeling units face complications in connecting and adjusting pneumatic and lubricant lines during format changes, leading to a cumbersome and potentially incorrect compressed air supply to gripper cylinders, due to the complex and confusing nature of conventional connections and the time-consuming process of setting control valves.
Innovation Solution
Integration of detachable snap-in or screw connectors for the control valves within the pneumatic lines allows for quick and reproducible connection and disconnection from the media distributor, with each gripper cylinder or label guide having a separate line and control valve for maintaining flow throttling settings, enabling easy format changes and flexible operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional pressure hoses and hose clamps are used to connect pneumatic lines to the media distributor, then the connection can be made, but the connection process becomes cumbersome and easily interchangeable, leading to potential incorrect connections
Solution Approach 1:
The pneumatic line is divided into modular segments with standardized connection interfaces. Each gripper cylinder assembly has its own dedicated pneumatic line segment with unique positioning features, allowing systematic connection to corresponding ports on the media distributor without confusion
Solution Approach 2:
The connection interfaces employ asymmetric design with unique positioning features such as offset connection points, non-circular coupling geometries, or keyed interfaces. This ensures that each pneumatic line can only be connected to its designated port on the media distributor, preventing incorrect connections while maintaining ease of operation
2Adaptability or versatility
If control valves are permanently installed on the media distributor, then the compressed air supply can be adjusted, but the adjustment process becomes time-consuming and carries the risk of poor reproducibility or incorrect adjustment when replacing gripper cylinders
Solution Approach 1:
The control valves are pre-adjusted to the correct compressed air supply settings during the assembly of the gripper cylinder unit. This preliminary adjustment is maintained throughout the service life of the gripper cylinder, eliminating the need for time-consuming readjustment during format changes or replacements
Solution Approach 2:
The control valve is integrated with the gripper cylinder assembly as a unified module rather than being separately mounted on the media distributor. This merging ensures that the control valve moves with the gripper cylinder, maintaining its adjusted settings automatically during replacement operations without requiring manual readjustment
3Adaptability or versatility
If pneumatic lines are disconnected from the media distributor during format changes, then gripper cylinders can be replaced, but the lines must be correctly reconnected which is cumbersome and error-prone
Solution Approach 1:
The pneumatic line connection interfaces are designed with universal standardized features that work across different gripper cylinder configurations. The same connection type and positioning system is used for all formats, allowing rapid replacement without requiring different connection methods or increasing system complexity
Solution Approach 2:
The pneumatic lines are pre-routed and pre-positioned on the gripper cylinder assembly with connection points that align with the media distributor ports. This preliminary arrangement ensures that when the gripper cylinder is replaced, the pneumatic lines are already in the correct position for connection, eliminating cumbersome routing and reducing error risk
Data Source
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AI summary
This document describes a labeling unit for labeling containers. The labeling unit comprises a non-rotating pneumatic line supplying compressed air to a gripper cylinder from a stationary media distributor. A control valve for adjusting the compressed air supply to the gripper cylinder is integrated into the pneumatic line and can be connected to the media distributor, particularly via a detachable snap-fit connector or screw connector. This ensures that the settings of the control valve and the compressed air supply to the grippers are reliably maintained even after a format-related change of the gripper cylinder until its next use. Readjusting the compressed air supply is therefore unnecessary.