Label Sleeve Dispensing via Suction and Friction Deceleration
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Solution Overview
Problem
Existing methods for labeling containers with film sleeves face issues such as high machine performance requirements, leading to film sleeves jumping off spreading units and rotational position changes during dispensing, resulting in inconsistent labeling.
Innovation Solution
The method involves shooting label sleeves onto rotating spreading units with movable segments, using suction and sliding friction to decelerate and fix the sleeves before they hit a lower support plate, ensuring consistent height and rotational position, and applying vacuum to maintain fixation and prevent springback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If film sleeves are shot onto spreader fingers at high speed to achieve high machine performance, then productivity increases, but the film sleeves jump off the spreader units and their rotational position changes
Solution Approach 1:
The patent applies preliminary action by using suction cups to secure the film sleeve to the spreader fingers before the high-speed shooting process begins. This preliminary fixation prevents the film sleeve from jumping off or changing rotational position during the high-speed operation, allowing both high productivity and reliable positioning to be achieved simultaneously
Solution Approach 2:
The suction cups act as an intermediary between the film sleeve and the spreader fingers. This intermediary mechanism provides a reliable connection that maintains the film sleeve's rotational position and prevents it from jumping off during high-speed operation, thus resolving the contradiction between high machine performance and reliable positioning
2Ease of manufacture
If spreading fingers are moved apart to stretch the film sleeve, then the labeling process becomes feasible, but the film sleeve cannot be reliably fixed at the correct height
Solution Approach 1:
The suction cups are activated before the spreading fingers move apart to stretch the film sleeve. This preliminary fixation secures the film sleeve at the correct height on the spreader fingers, ensuring that when the fingers move apart for stretching, the film sleeve remains reliably positioned rather than shifting or becoming misaligned
Solution Approach 2:
The system dynamically adjusts the suction force and timing to maintain film sleeve fixation during the spreading process. The suction cups provide adaptive holding force that accommodates the film sleeve's expansion while maintaining precise height positioning, enabling both feasible labeling and precise manufacturing
3Reliability
If suction is applied to fix the film sleeve on spreader fingers, then the film sleeve remains stable during dispensing, but additional device complexity is introduced
Solution Approach 1:
The suction cups serve multiple functions: they attach the film sleeve to the spreader fingers, maintain its rotational position, fix it at the correct height, and prevent it from jumping off during high-speed operation. This multi-functionality achieves reliable stability without requiring multiple separate mechanisms, thus limiting the increase in device complexity
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 effectively stabilizes the label sleeves on the spreading units, preventing them from jumping off and maintaining their rotational position, ensuring reliable and consistent labeling, even at high machine speeds.
Implementation Method 1
the label sleeves are braked before they hit the bottom against the spreading units by sucking on at least one of the spreading segments
Implementation Method 2
The deceleration takes place in particular through sliding friction between the spreader segments and the label sleeves
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
A label dispenser (9) is arranged above an orbit of movable spreading unit (6) so as to dispense a label sleeve (3) on label expansion segments of movable spreading unit. The air ducts are provided in movable spreading unit for creating negative pressure on label expansion segments and for sucking the label sleeve towards expansion segments. The base material of label sleeve is low density polyethylene. An independent claim is included for apparatus for labeling container with label sleeve.