Dual-Station Laser Processing Layout for Safe Single-Operator Throughput

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Solution Overview

Problem

Existing laser processing machines in industrial automation lack efficiency, productivity, and safety for operators, particularly in tasks like paint stripping of complex items like branching boxes or metal electrical cabinets.

Innovation Solution

A semiautomatic machine with a laser processing head mounted on a 2-axis Cartesian system, controlled by a PLC microprocessor and software, featuring manual loading/unloading zones and integrated shielding for operator safety, allowing for efficient and safe processing of elements with a single operator.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If manual loading and unloading zones are provided for semiautomatic operation, then ease of operation is improved, but productivity is reduced compared to fully automatic systems

Engineering Contradiction:
Improvemanual loading and unloadingVSAvoidprocessing output
Core Design Contradiction:
Ease of operationVSProductivity

Solution Approach 1:

The machine is divided into distinct functional zones: a first loading/unloading zone for manual operator access and a second processing zone for automated laser operations. This spatial segmentation allows the operator to load elements without interrupting the automated processing cycle, resolving the contradiction between manual operation ease and productivity maintenance.

Inventive Principle:
Principle #1Segmentation

2Object-affected harmful factors

If shielding means are provided to protect the operator from laser radiation, then safety is improved, but device complexity increases

Engineering Contradiction:
Improvelaser radiation protectionVSAvoidshielding system structure
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The shielding means are integrated into the housing structure of the machine, combining the protective function with the existing mechanical framework. This merging approach provides comprehensive laser radiation protection while avoiding the addition of separate, complex shielding systems.

Inventive Principle:
Principle #5Merging (Combining)

3Ease of operation

If a single operator manages both loading and processing zones, then ease of operation is improved, but safety risks increase due to operator exposure

Engineering Contradiction:
Improvesingle operator controlVSAvoidoperator exposure to laser
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The machine separates the operator's workspace from the laser processing zone through physical shielding and spatial division. The operator remains in the first zone while the laser operates in the second zone, allowing single-operator control while minimizing exposure to harmful laser radiation.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The shielding means act as an intermediary barrier between the operator and the laser radiation source. This intermediate protective structure enables the operator to safely control the machine from a distance while the laser processes elements in a protected zone.

Inventive Principle:
Principle #24Intermediary (Mediator)

4Productivity

If multiple processing areas are provided on the housing, then productivity is improved, but device complexity increases

Engineering Contradiction:
Improveprocessing capacityVSAvoidnumber of processing areas
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The laser processing head is designed to service multiple processing areas through reciprocating motion along the housing. This multi-functional capability allows a single laser system to handle multiple workstations, increasing productivity without proportionally increasing the number of laser sources or major system components.

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 machine achieves high productivity and safety by enabling efficient processing of complex items with reduced operator risk through controlled access and automated processing cycles, maximizing efficiency and safety.

Implementation Method 1

a laser processing head (22) for processing a plurality of elements (E) to be processed (E)

Methodology Applied
Scientific EffectLaser: Laser

Implementation Method 2

for paint stripping mechanical pieces by means of ablative laser

Methodology Applied
Scientific EffectLaser ablation: Laser Ablation

Data Source

PatentEP4035825A1Semiautomatic machine for laser processing of elements to be processed, method and computer program for controlling the machine
Publication Date: 2022.08.03 BRENTECH SRL
  • EP4035825A1 patent drawingFigure 1
  • EP4035825A1 patent drawingFigure 2~3
  • EP4035825A1 patent drawingFigure 4~5

AI summary

A semiautomatic machine for the laser processing of elements to be processed (E), comprising at least one first and one second loading/unloading area (15, 15') of the elements to be processed (E) arranged side-by-side, at least one first and one second working area (21, 21'), at least one first and one second cradle (30, 30') for movable support between the latter and laser shielding means (40, 40'). Provided for is single laser processing head (22) reciprocatingly movable between the first and second processing areas (21, 21'). The machine further comprises control means (50).