Thermal Expansion Solution for High-Speed Labelling Machines
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Summary
Problems
High-speed labelling machines face issues with wear on cutting tools due to thermal expansion, leading to maintenance challenges and resource-intensive solutions.
Innovation solutions
A labelling machine design featuring a support device with a mean coefficient of thermal expansion matching that of the vacuum roller and parting element, along with a cutting device comprising a rotating vacuum roller and parting element, minimizes wear by ensuring thermal expansion compensation and flexible label length production through motorized drives and adjustable counter elements.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If the vacuum roller and parting element are equipped with their own drives to enable high-speed operation and varying cut lengths, then productivity and adaptability are improved, but wear on cutting tools increases due to thermal expansion and tolerance drift
Why choose this principle:
The support device is designed with a mean coefficient of thermal expansion that corresponds substantially to the mean coefficient of thermal expansion of the rotating vacuum roller and of the parting element. This ensures that all components expand at the same rate during high-speed operation, maintaining consistent tolerances and reducing wear on cutting tools.
Principle concept:
If temperature-controlled oil channels are introduced through the cutter to prevent thermal expansion, then manufacturing precision is improved, but device complexity and structural resource input increase significantly
Why choose this principle:
Instead of using complex temperature-controlled oil channels, the invention uses a simple material selection approach where the support device is made from a material whose thermal expansion characteristics match those of the vacuum roller and parting element. This passive thermal compensation approach maintains precision without adding complex active cooling systems.
Application Domain
Data Source
AI summary:
A labelling machine design featuring a support device with a mean coefficient of thermal expansion matching that of the vacuum roller and parting element, along with a cutting device comprising a rotating vacuum roller and parting element, minimizes wear by ensuring thermal expansion compensation and flexible label length production through motorized drives and adjustable counter elements.
Abstract
A labelling machine for labelling containers may include at least a container feed means, a labelling region, a container removal means, and at least one labelling unit for processing labels from the roll. The labelling unit may comprise at least one label roll, a label feeder, a cutting device, a gripper cylinder, and at least one gluing mechanism. The cutting device may be constituted by a rotating vacuum roller and a rotating parting element which, on its circumference, has at least one parting tool, for example, a cutting blade, and the cutting device may be held by a common support device having, at least, a base part and a cover part. The support device has the same mean coefficient of thermal expansion as the rotating vacuum roller and the rotating parting element.