Adjustable Glue Distribution Roll for Embossing Lamination
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Solution Overview
Problem
Existing embossing-lamination groups face issues with glue distribution when paper width varies, leading to glue wastage, paper tearing, and malfunction due to the need for frequent replacement of cliché rolls and complications at the interface between fixed and mobile parts, such as sliding seals.
Innovation Solution
An adjustable glue distributor device with a 'C'-shaped doctor blade chamber and rolls of equal axial development, where the distribution and dosing rolls are independently motorized and axially translatable to adjust the glue distribution width without replacing rolls or introducing sliding seals, ensuring efficient glue application on the paper.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the cliché roll width is reduced to match varying paper widths, then glue distribution accuracy is improved, but production efficiency deteriorates due to frequent roll replacement and group stoppage
Solution Approach 1:
The patent makes the cliché roll axially adjustable along its axis, allowing the effective width of the roll to be dynamically changed without replacement. This dynamic adjustment capability enables the system to adapt to different paper widths while maintaining continuous operation, thus resolving the contradiction between glue distribution accuracy and production efficiency
Solution Approach 2:
The patent changes the physical parameter of the cliché roll by adjusting its axial position relative to the paper web. By varying the axial engagement width of the cliché roll with the paper, the system can precisely control glue distribution width to match different paper widths, eliminating the need for roll replacement and maintaining high productivity
2Loss of substance
If lateral walls are added to the doctor blade chamber to limit glue transfer, then glue wastage is reduced, but device complexity increases due to sliding seal requirements
Solution Approach 1:
The patent removes the lateral walls from the doctor blade chamber that would otherwise be required to limit glue transfer. Instead of using physical barriers (walls with sliding seals), the invention achieves glue waste prevention through the axial adjustment of the cliché roll, which inherently limits glue transfer to only the necessary width, thus reducing device complexity while maintaining low glue wastage
Solution Approach 2:
The patent uses the axially adjustable cliché roll as an intermediary element that controls glue transfer from the doctor blade chamber to the paper. By adjusting the axial position of the cliché roll, the system mediates the glue flow to match paper width requirements without requiring complex lateral wall structures or sliding seals
3Device complexity
If a fixed width cliché roll is used, then device simplicity is maintained, but adaptability to different paper widths is reduced
Solution Approach 1:
The patent introduces axial adjustability of the cliché roll, transforming it from a fixed-width component to a dynamically adjustable one. This dynamic capability allows the same simple device structure to adapt to different paper widths by changing the axial engagement position, thereby maintaining device simplicity while achieving high adaptability
Solution Approach 2:
The patent makes the cliché roll universal by enabling it to serve multiple width requirements through axial adjustment. A single cliché roll can effectively function at different widths by adjusting its axial position, eliminating the need for multiple fixed-width rolls and simplifying the overall device while enhancing versatility
Data Source
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AI summary
An adjustable glue distributor device (10) of an embossing-lamination group (100) comprising an embossing roll (120) and an embossing counter-roll (110), comprises a glue (11) distribution roll (12) and a glue (11) dosing roll (13), wherein the dosing roll (13) is respectively coupled along two different generatrices respectively with a tank (14) containing the glue for collecting the glue and with the distribution roll (12) along a coupling portion (17) for feeding the collected glue onto the distribution roll (12), the distribution roll (12) and the dosing roll (13) having the same axial development, in which at least one of the distribution roll (12) and the dosing roll (13) is arranged mobile axially in the direction orthogonal with respect to a middle axis (x) of the group (100) in order to increase and/or to reduce the width of the coupling portion (17) between the dosing roll (13) and the distribution roll (12), the dosing roll (13) being integral with the tank of glue (14). A relative embossing-lamination group and the adjusting method of the device are also part of the invention.