Glue Distribution Device With Translatable Wall And Lubrication

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Solution Overview

Problem

Existing embossing-lamination assemblies face issues with glue distribution, leading to waste, paper tearing, and equipment damage due to the need for frequent replacement of rollers and complex adjustments to accommodate varying paper widths, and previous solutions either complicate axial movement or result in dry contacts causing premature roller damage.

Innovation Solution

An embossing-lamination assembly with a glue distribution device featuring a translatable container wall to adjust glue chamber width and a lubricant application system using movable nozzles to prevent dry contacts between rollers, ensuring reliable and economical operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of substance

If the distributor roller width is reduced to match paper width, then glue waste and paper tearing are avoided, but roller replacement costs and machine downtime increase

Engineering Contradiction:

Improveglue wasteVSAvoidmachine downtime

Core Design Contradiction:

Loss of substanceVSLoss of time

Solution Approach 1:

The distributor roller is made axially movable through a positioning device that allows it to be shifted along the axis. This dynamic adjustment enables the roller width to be adapted to different paper widths without replacement, eliminating machine downtime while maintaining optimal glue distribution and preventing glue waste.

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If the transport roller axial movement is enabled to adjust glue transfer width, then adaptability to paper width improves, but device complexity increases

Engineering Contradiction:

Improvepaper width adaptabilityVSAvoidroller positioning mechanism

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The positioning device serves multiple functions: it axially positions the distributor roller to match paper width, supports the roller during operation, and maintains proper alignment. This multi-functional design achieves adaptability without proportionally increasing device complexity, as a single mechanism accomplishes several tasks simultaneously.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If the doctor chamber lateral walls are made movable to adjust glue container length, then adaptability to paper width improves, but dry contact between rollers occurs causing premature damage

Engineering Contradiction:

Improvepaper width adaptabilityVSAvoidroller durability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The positioning device enables localized adjustment of the glue transfer zone by axially shifting the distributor roller. This allows the glue-covered portion of the transport roller to be precisely aligned with the distributor roller, ensuring continuous lubrication at the contact interface while adapting to different paper widths, thus preventing premature roller damage.

Inventive Principle:

Principle #3Local quality

4Adaptability or versatility

If multiple distributor rollers are provided for different paper widths, then adaptability to various paper sizes improves, but manufacturing costs and operational complexity increase

Engineering Contradiction:

Improvepaper width coverageVSAvoidmanufacturing cost

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

Instead of providing multiple distributor rollers for different paper widths, the invention makes a single distributor roller universally adaptable through axial positioning. This single roller can serve all paper width requirements by being shifted to appropriate positions, significantly reducing manufacturing costs while maintaining full adaptability.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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

The solution effectively adapts glue distribution to paper width without wasting glue or causing roller damage, maintaining assembly reliability and reducing operational costs by preventing dry contacts and ensuring proper lubrication without soiling downstream rollers.

Implementation Method 1

means are provided, apt to apply a lubricant on the surface of said transport roller not involved by the glue

Methodology Applied

Scientific EffectLubrication: Lubrication

Data Source

PatentEP3132860B1Glue distribution device and embossing-lamination assembly provided therewith

Publication Date: 2019.06.19 PAPER CONVERTING MACHINE COMPANY ITALIA SPA

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AI summary

Glue distributing device comprising a glue distributor roller (13) coupled along a generatrix with a transport roller (14) for collecting glue (17) from a doctor chamber (15) comprising a container (16) closed by lateral walls (18) tightly coupled against said transport roller (14), wherein in said container (16) at least one intermediate wall (19) is provided, tightly coupled against the inner surface of the wall of the container (16) and with said transport roller (14), and being translatable parallel to the axis of said roller (14), and wherein means are provided for applying a lubricant (23) on a surface of said transport roller (14) not involved by the glue (17). Embossing-lamination assembly (10) provided with the glue distributing device and comprising at least one embossing roller (11) coupled along a generatrix with said glue distributor roller (13) and along another generatrix with an embossing counter-roller (11').