Rotatable Film Feeding Path for Cylindrical Label Alignment
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Solution Overview
Problem
Conventional film fitting devices struggle with accurately aligning cylindrical films to cornered containers, leading to lateral displacement and increased costs due to complex rotation mechanisms and specialized components required for different container types.
Innovation Solution
A fitting device with a turnable feed unit and fitting unit allows for adjustable angular positioning of the cylindrical film relative to the container's circumference, enabling alignment with container corners without rotating the container, using a pitch-feed roller unit, cutting unit, mandrel, and transfer unit to set the film's folding position accurately.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the container is rotated by means of a screw to align the film folding position with the corner of the container, then the film alignment accuracy is improved, but the device complexity and cost increase
Solution Approach 1:
Instead of rotating the container to align with the film folding position, the invention inverts the approach by making the film feeding path rotatable to align the film folding position with the container corner. This swaps the movable element from the container carrier to the film feeding mechanism, achieving the same alignment goal without requiring complex container rotation mechanisms.
Solution Approach 2:
The invention introduces a rotatable film feeding path that can dynamically adjust its angular position to match different container types and corner positions. This dynamic adjustment capability allows the system to adapt to various container geometries without requiring specialized fixed mechanisms for each container type.
2Manufacturing precision
If a screw mechanism is used to rotate the container during carrying, then the film folding position can be aligned with the container corner, but the operational stability deteriorates
Solution Approach 1:
The invention transfers the rotation function from the container carrier to the film feeding path. By making the film feeding mechanism rotatable instead of rotating the container during carrying, the system achieves precise angular positioning without compromising the stability of the container carrying operation.
3Productivity
If the container angular position is not restored after film attachment, then the operation continuity is maintained, but the film attachment quality deteriorates
Solution Approach 1:
The rotatable film feeding path automatically repositions itself for each new container, eliminating the need to restore the container to its original angular position. The system serves itself by dynamically adjusting the film feeding angle to match each container's corner position, ensuring consistent film attachment quality while maintaining continuous operation.
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 solution inhibits lateral film displacement and reduces equipment costs by allowing precise alignment without rotating the container, maintaining stability during film attachment and thermal contraction, and eliminating the need for complex rotation mechanisms or specialized components.
Implementation Method 1
a pitch-feed roller unit which intermittently feeds the film base material by a predetermined length
Implementation Method 2
a cutting unit which cuts the film base material fed from the roller unit into an individual cylindrical film body
Implementation Method 3
If the container that remains rotated as above enters a heater unit which thermally contracts the film fitted to the container into a final container attachment state
Data Source
AI summary
A label fitting device cylindrically opens and feeds downward an individual label, and thereby fits the individual film body around a fitting target carried to a fitting position. The label fitting device includes a feed unit which feeds downward the label base material while changing the carrying direction thereof, and a label fitting unit which carries downward the label and fits the label to the container. The label is formed by cutting the label base material fed by the feed unit. The label fitting unit is provided so as to be turnable relative to the container to thereby enable adjustment of the fitting angular position of the cylindrical label relative to the circumferential direction of the container.