Log End Glue Distribution via Fixed Blade and Movable Plate

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Solution Overview

Problem

Existing devices for distributing glue on log ends or cores are not efficient, leading to uneven glue distribution, machine soiling, and require frequent adjustments, making them difficult to operate and prone to excessive glue usage.

Innovation Solution

A device with a fixed blade and movable plate system that collects and dispenses glue, ensuring continuous distribution along the log's crosswise dimension, allowing for easy operation and minimizing soiling, with adjustable components for varying glue quantities.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If a movable assembly is used to apply glue, then glue distribution can be controlled, but the device becomes complex and requires precise coordination of movements

Engineering Contradiction:

Improveglue distribution uniformityVSAvoidmovable assembly coordination

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

Instead of moving the glue application assembly to follow the log, the log is made to pass over a stationary blade that has been coated with glue. This inverts the traditional approach where the applicator moves with the product, thereby eliminating complex movement coordination while maintaining uniform glue distribution.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

A fixed blade serves as an intermediary element between the glue container and the log. The blade is coated with glue and then the log passes over it, allowing the blade to transfer glue to the log surface. This intermediary simplifies the system by replacing complex movable application mechanisms with a simple stationary coating surface.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Manufacturing precision

If dispensers are used to deposit glue, then glue can be applied to specific locations, but the dispensers are delicate and require regular checking and adjustment

Engineering Contradiction:

Improveglue deposition accuracyVSAvoiddispenser maintenance

Core Design Contradiction:

Manufacturing precisionVSEase of operation

Solution Approach 1:

The fixed blade can be easily replaced or cleaned when worn or contaminated, serving as a simple, low-cost component that does not require complex adjustment mechanisms. This replaces delicate dispensers with a robust, maintainable component.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

3Use of energy by stationary object

If glue is delivered through a slot by overflow, then glue distribution is continuous, but the machine and roll become soiled

Engineering Contradiction:

Improveglue flow continuityVSAvoidmachine soiling

Core Design Contradiction:

Use of energy by stationary objectVSObject-affected harmful factors

Solution Approach 1:

The harmful overflow effect is extracted and contained to only the necessary area. The blade is coated with glue in a controlled manner, and excess glue is contained to the blade surface rather than overflowing onto the machine or log in uncontrolled amounts.

Inventive Principle:

Principle #2Taking out (Extraction)

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 device ensures complete and uniform glue distribution on log ends or cores, simplifying the process, reducing soiling, and allowing for quick adjustments during operation, enhancing operational efficiency and flexibility.

Implementation Method 1

a blade (18), facing upwards, on which a quantity of glue (12) is made to collect

Methodology Applied

Scientific EffectCapillary action: Capillary Action

Implementation Method 2

the glue is therefore used on the one hand to join the final end to the remaining part of the roll

Methodology Applied

Scientific EffectAdhesion: Adhesive

Data Source

PatentUS7335263B2Device for distributing glue on an end edge of a log, on a log or on a core for logs and relative method

Publication Date: 2008.02.26 GAMBINI INT

AI summary

A device for distributing glue on an end edge of a log, on a log or on a core for logs comprising a feed surface (16) of logs or cores (15) towards a glue distribution area, wherein the device comprises a container (13) containing glue (12), wherein disposed inside the container (13) is a fixed blade (18) with one free end (22) facing upwards at the level of an interrupted section (19) of the feed surface (16) on which the logs or cores (15) travel, one behind another, the fixed blade (18) being associated with a plate (27) movable from the bottom upwards, and vice versa, which conveys the glue (12) to the level of an upper free end (22) of the fixed blade (18), discharges it on the free end (22) and returns towards the bottom of the container (13), the moving plate (27) having, at an upper end thereof, an area to collect glue (28, 29) in the container (13) and to discharge glue on the fixed blade when it is taken to the level of the upper end (22) of the fixed blade (18).