Laser Cutting Machine Spark Deflection for Cleaner Processing Space

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Solution Overview

Problem

Existing laser processing machines struggle to discharge sparks and dirt particles produced during the processing of workpieces in a structurally simple and controlled manner, posing risks to operators and machine components.

Innovation Solution

A spark protection device is arranged in the region of the transition from the bridge to the two longitudinal beams, featuring a main deflection surface inclined at an angle of less than 90° to deflect sparks and dirt particles into the processing space, away from the laser processing head, effectively directing them below the workpiece plane.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If a protective hood is arranged around the laser processing head, then operator and component protection from sparks is improved, but device complexity increases

Engineering Contradiction:
Improvespark protectionVSAvoidstructure complexity
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The invention extracts the harmful sparks and dirt particles from the processing area by deflecting them away from critical components and the operator. The deflection surface separates the harmful factors from the protected zones, allowing protection without enclosing the entire processing head in a complex hood structure.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The deflection surface acts as an intermediary element between the spark generation zone and the protected areas. It intercepts and redirects sparks and particles into a controlled discharge path, mediating between the harmful process and the components/operator that need protection.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Object-generated harmful factors

If an extraction chamber with particle chute is provided below the work area, then particle removal is improved, but device complexity increases

Engineering Contradiction:
Improveparticle dischargeVSAvoidextraction system complexity
Core Design Contradiction:
Object-generated harmful factorsVSDevice complexity

Solution Approach 1:

The invention extracts particles from the processing area using a simple deflection surface that redirects them along gravity into a collection area below the workpiece plane. This eliminates the need for complex extraction chambers and particle chutes while achieving effective particle removal.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The deflection surface utilizes gravity as a natural force to guide particles downward into the collection area. The system serves itself by using the inherent gravitational field rather than requiring complex mechanical extraction mechanisms, achieving particle removal with minimal additional components.

Inventive Principle:
Principle #25Self-service

3Device complexity

If a deflection surface is inclined at a small angle, then structural simplicity is improved, but spark deflection effectiveness decreases

Engineering Contradiction:
Improvedeflection surface simplicityVSAvoidspark deflection efficiency
Core Design Contradiction:
Device complexityVSObject-affected harmful factors

Solution Approach 1:

The invention optimizes the inclination angle parameter of the deflection surface to achieve the optimal balance between structural simplicity and deflection effectiveness. By carefully selecting the angle within a specific range, the system maintains a simple geometric form while ensuring sparks are effectively redirected away from critical areas.

Inventive Principle:
Principle #35Parameter changes

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 spark protection device efficiently directs sparks and dirt particles away from critical regions, keeping the area above the workpiece clean and preventing dirt accumulation in the machine's transition region, thereby enhancing operator and component safety.

Implementation Method 1

The main deflection surface is inclined transversely to the first direction in relation to the workpiece plane in the direction of the processing space at a first angle of inclination of less than 90° for deflecting sparks into the processing space in a direction away from the laser processing head

Methodology Applied
Scientific EffectGravitation: Gravitation

Data Source

PatentUS20250170677A1Laser Processing Machine, In Particular Laser Cutting Machine, With A Spark Protection Device
Publication Date: 2025.05.29 BYSTRONIC LASER AG
  • US20250170677A1 patent drawing
  • US20250170677A1 patent drawing
  • US20250170677A1 patent drawing

AI summary

A laser proessing machine includes a machine frame with two longitudinal beams running in a first direction and having a bridge with a laser processing head running in a second direction transverse to the first direction. The bridge is arranged to be movable in the first direction on the two longitudinal beams. A workpiece plane of the laser processing machine for receiving and processing a workpiece is formed in a processing space between the two longitudinal beams. The workpiece plane extends in the first direction and the second direction in the region of a transition from the bridge to the two longitudinal beams. A spark protection device is arranged in the region of the transition and has a main deflection surface extending in the first direction. The main deflection surface is inclined transversely to the first direction with respect to the workpiece plane in the direction of the processing space.