Stretch Sleeve Labeling Device with Adjustable Spreading Speed
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Solution Overview
Problem
Existing labeling devices for elastic film sleeves face issues such as damage to imprints during expansion, unreliable seating on containers, material transfer failures, inaccurate coordination of lifting and compressed air delivery, and variable labeling quality due to machine performance changes.
Innovation Solution
The device employs electrically controllable spreader units with adjustable speeds for expanding and pulling off label sleeves, along with a control device setting different spreading and lifting speeds to adapt to material combinations, and includes monitoring for drive torque to ensure proper operation and quality control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high spreading speed is used to increase productivity, then labeling efficiency is improved, but imprint damage on label sleeves occurs
Solution Approach 1:
The spreading speed is made dynamically adjustable through electrical control of the spreader units, allowing the system to adapt the spreading velocity to match the specific material properties of different label sleeve types. This dynamic adjustment capability enables high productivity for durable materials while protecting delicate imprints on more sensitive materials.
Solution Approach 2:
The system changes the spreading speed parameter based on the material combination being processed. By adjusting this critical parameter, the system optimizes the balance between productivity and imprint protection for different label sleeve materials and container types.
2Device complexity
If fixed lifting speed is used to simplify control, then device complexity is reduced, but labeling quality becomes dependent on machine performance variations
Solution Approach 1:
The lifting speed is transformed from a fixed parameter to a dynamically controllable one through electrical actuation. This allows the system to adapt lifting velocities to compensate for machine performance variations and ensure consistent labeling quality across different operating conditions.
Solution Approach 2:
The electrical control system enables feedback mechanisms that can monitor and adjust lifting speeds in response to actual process conditions, ensuring that labeling quality remains consistent even when machine performance varies due to wear, temperature, or other factors.
3Ease of operation
If single-speed spreading is used to reduce control complexity, then ease of operation is improved, but adaptability to different material combinations is limited
Solution Approach 1:
The spreader units are equipped with electrical control that enables dynamic adjustment of spreading speeds. This dynamic capability provides adaptability to different material combinations while maintaining ease of operation through automated control that eliminates the need for manual reconfiguration.
Solution Approach 2:
The system changes the spreading speed parameter electronically based on the detected material combination, providing versatility without adding mechanical complexity. The electrical control system automatically selects appropriate parameters for different label sleeve and container materials.
4Device complexity
If compressed air delivery is not coordinated with lifting movement, then device complexity is reduced, but labeling quality deteriorates due to inaccurate timing
Solution Approach 1:
The control of compressed air delivery and lifting movement is merged into a single coordinated electrical control system. This integration ensures that the timing and sequencing of these two critical operations are precisely synchronized, improving label placement accuracy without proportionally increasing overall system complexity.
Solution Approach 2:
The electrical control system coordinates compressed air delivery with lifting movement through feedback mechanisms that monitor the actual positions and timings, ensuring accurate synchronization for optimal label transfer and placement.
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 prevents imprint damage, ensures accurate label placement, improves labeling quality by adapting to material properties, and maintains consistent quality across varying machine outputs and production conditions.
Implementation Method 1
stretching elastic film sleeves over the container surface
Implementation Method 2
a compressed air cushion is generated between the spreading fingers and the label sleeves while the label sleeve is being stripped off
Data Source
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AI summary
The device has positioning units (7) for positioning containers (3) in lengthened label cases (2). Electrical controllable removal units (8) are provided for passing the label cases to containers by opening-side of withdrawal containers from spreading units. A control device (9) adjusts different spreading velocities for two movement phases of the spreading segments and/or adjusts different lifting speed for two movement phases of the withdrawal containers. Electrical controllable spreading units (6) are provided with spreading segments. An independent claim is also included for a method for labeling containers with resilient label cases.