Packaging Guiding Device Dynamic Roller Adjustment
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Solution Overview
Problem
Existing guiding devices for packaging machines require frequent stopping to adjust the extension of the overlapping area, leading to inefficiencies and a risk of package defects due to pinching between rollers.
Innovation Solution
A guiding device with a second folding roller that can be moved towards or away from the axis of the passage, allowing for precise control of the overlapping area without stopping the machine, and is arranged in a different plane to prevent pinching of the packaging material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the extension of the overlapping area is adjusted by replacing folding rollers with different diameters, then the overlapping area extension can be controlled, but the packaging machine must stop and adjustment is time-consuming
Solution Approach 1:
The invention applies the dynamics principle by making the second folding roller movable rather than fixed. The driving arrangement allows the second folding roller to be dynamically adjusted towards or away from the longitudinal axis during machine operation, enabling continuous adjustment of the overlapping area extension without stopping the packaging machine. This transforms a static system into a dynamic one that can adapt in real-time.
Solution Approach 2:
The invention applies parameter changes by modifying the position parameter of the second folding roller along the longitudinal axis. By changing the position of this roller through the driving arrangement, the extension of the overlapping area is directly controlled. This allows precise adjustment of the geometric parameter (overlapping area extension) without requiring roller replacement.
2Reliability
If multiple folding rollers are arranged in the same plane to guide the packaging material, then the guiding function is achieved, but the packaging material may be pinched between rollers causing defects
Solution Approach 1:
The invention applies the dimensionality change principle by arranging the second folding roller in a different plane (vertical plane) compared to the first folding rollers (horizontal plane). This spatial separation in different dimensions prevents the packaging material from being pinched between rollers, as they no longer occupy the same geometric plane. The longitudinal displacement of the second roller further enhances this dimensional separation.
3Ease of operation
If the overlapping area extension is not precisely controlled, then the machine operates simply, but the packages have bad appearance and incorrect weight
Solution Approach 1:
The invention applies the feedback principle through the sensor that detects the extension of the overlapping area and provides signals to the driving arrangement. This creates a closed-loop control system where the actual overlapping area extension is continuously monitored and compared with the desired value, and the driving arrangement automatically adjusts the second folding roller position to maintain precision. This ensures consistent package quality while maintaining operational simplicity.
Data Source
AI summary
A guiding device for guiding a sheet of packaging material in a packaging machine for producing sealed packages includes: a plurality of folding rollers defining a passage for the sheet of packaging material, the passage having a longitudinal axis, wherein the plurality of folding rollers are configured to cause a first longitudinal edge of the sheet of packaging material to superimpose to a second longitudinal edge of the sheet of packaging material, opposite the first longitudinal edge, wherein the first longitudinal edge and the second longitudinal edge define an overlapping area having an extension, wherein the plurality of folding rollers include: a group of first folding rollers configured to rotate around first rotation axes, and at least one second folding roller configured to rotate around a second rotation axis, and a driving arrangement configured to move the at least one second folding roller towards and away from the longitudinal axis.