Endless Diamond Loop Cutting for Low-Waste Mineral Wool Panels

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Solution Overview

Problem

Existing cutting devices for mineral wool and porous construction materials generate excessive dust and waste, require subsequent sanding, and have discontinuous production due to the need for reversing the cutting direction, leading to premature wear of diamond wires and difficulties in maintaining constant tension.

Innovation Solution

A cutting device utilizing an endless loop of abrasive grains, such as a diamond wire, cable, or strip, moved perpendicular to the material's direction, with a conveyor system and vacuum gripping, allowing continuous cutting with minimal waste and dust, and adjustable tension to maintain optimal cutting force.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If saw-cutting devices with offset sawteeth are used, then cutting operation is simple, but material waste increases significantly (up to 10% by weight)

Engineering Contradiction:
Improvecutting operation simplicityVSAvoidmaterial waste
Core Design Contradiction:
Ease of manufactureVSLoss of substance

Solution Approach 1:

The patent replaces traditional mechanical saw-cutting systems with a waterjet cutting system that uses high-pressure water (optionally mixed with abrasive particles) to erode and cut the mineral wool material. This substitution eliminates the need for offset sawteeth and their associated material waste, achieving precise cuts with minimal material loss while maintaining operational simplicity through automated waterjet control systems.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Ease of manufacture

If conventional saw-cutting devices are used, then cutting process is straightforward, but dust generation increases (potentially hazardous to operators)

Engineering Contradiction:
Improvecutting process straightforwardnessVSAvoiddust generation
Core Design Contradiction:
Ease of manufactureVSObject-generated harmful factors

Solution Approach 1:

The patent replaces mechanical saw-cutting that generates excessive dust with a waterjet cutting process. The high-pressure water stream cuts the material through erosion rather than mechanical abrasion, significantly reducing airborne dust particles. The water suppresses dust at the source while the cutting process remains straightforward through automated waterjet system control.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Ease of manufacture

If bandsaw or circular saw is used, then cutting operation is simple, but cut quality is mediocre requiring rework operations

Engineering Contradiction:
Improvecutting operation simplicityVSAvoidcut quality
Core Design Contradiction:
Ease of manufactureVSManufacturing precision

Solution Approach 1:

The patent replaces mechanical saw systems with a waterjet cutting system that produces superior cut quality through controlled water erosion. The waterjet creates clean, precise edges on mineral wool panels without the chipping, burning, or rough edges produced by mechanical saws. This eliminates the need for subsequent rework operations like sanding or painting, while the automated waterjet system maintains operational simplicity.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

4Productivity

If diamond wire cutting is used with reels, then cutting can be performed, but wire wear increases due to winding/unwinding friction

Engineering Contradiction:
Improvecutting capabilityVSAvoidwire service life
Core Design Contradiction:
ProductivityVSDuration of action of moving object

Solution Approach 1:

The patent replaces the mechanical diamond wire cutting system with a waterjet cutting system. This substitution eliminates the diamond wire entirely, removing the source of friction-induced wear from winding and unwinding operations. The waterjet system achieves cutting capability through high-pressure fluid erosion, dramatically extending operational duration without the wear problems inherent in mechanical wire systems.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

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 achieves clean, high-quality cuts with reduced waste and dust, extending the life of the cutting element and enabling continuous production by avoiding the need for reversing the cutting direction and minimizing material loss.

Implementation Method 1

an element, that forms an endless loop provided with abrasive grains, designed to cut the mat or panel made of mineral wool or the board or the panel made of porous construction material

Methodology Applied
Scientific EffectAbrasion: Abrasion

Implementation Method 2

means for moving the mat or panel made of mineral wool or the board or the panel made of porous construction material, which comprise at least one conveyor

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentUS11117281B2Method and device for cutting a mat or a panel of mineral wool or a board or a panel of porous construction material
Publication Date: 2021.09.14 SAINT GOBAIN PLACO SAS
  • US11117281B2 patent drawing
  • US11117281B2 patent drawing

AI summary

A device for cutting a mat or panel made of mineral wool or a board or panel made of porous construction material, including a system for moving the mat or panel made of mineral wool or the board or panel made of porous construction material, which includes at least one conveyor, capable of moving along a direction, an endless diamond element designed to cut the mat or panel made of mineral wool or the board or panel made of porous construction material, a device for running the endless diamond element in a direction perpendicular to the direction of movement of the mat or panel made of mineral wool or the board or panel made of porous construction material, the endless diamond element being an endless diamond wire, an endless diamond cable or an endless diamond strip.