Forming Press Safety Control for Position-Verified Detector Deactivation

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Solution Overview

Problem

Existing forming presses lack a reliable mechanism for position-dependent deactivation of radiation detectors to ensure safe operation, particularly due to potential errors in position detection systems that can lead to unsafe activation or deactivation of safety controls.

Innovation Solution

Implement a safety control system that compares status signals from two independent position detection systems with different cycle times to ensure accurate deactivation of radiation detectors at predetermined positions, using correction values to account for potential errors in faster, less reliable machine control position values.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If a fast position detection system is used for real-time control, then the response speed is improved, but the reliability of position detection deteriorates due to potential errors

Engineering Contradiction:

Improveresponse speed of position detectionVSAvoidreliability of position detection

Core Design Contradiction:

SpeedVSReliability

Solution Approach 1:

The patent implements a feedback mechanism where the safety control continuously monitors position values from both the fast machine control system and a slower but more reliable safety position detection system. The safety control compares these values and uses feedback to determine when to deactivate radiation detectors, ensuring that the fast system's speed benefits are realized while the reliable system's accuracy validates the deactivation timing.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The safety control acts as an intermediary between the fast machine control position detection system and the radiation detector deactivation decision. It receives position values from both systems, processes and compares them, and makes the final deactivation decision based on the comparison, thus mediating between the conflicting speed and reliability requirements.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If radiation detectors remain active for safety monitoring, then safety coverage is improved, but false deactivation due to position errors causes unsafe operations

Engineering Contradiction:

Improvesafety monitoring reliabilityVSAvoidunsafe operations from false deactivation

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent applies preliminary action by having the safety control prepare and compare position values from both detection systems before making the deactivation decision. The safety control proactively validates the fast system's position data against the reliable system's data in advance, ensuring that deactivation only occurs when both systems agree, thus preventing false deactivation before it can cause unsafe operations.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The safety control uses feedback from the reliable position detection system to continuously validate the fast system's position readings. This feedback loop ensures that radiation detectors are only deactivated when the position data from both systems corroborate each other, maintaining safety monitoring reliability while preventing false deactivation.

Inventive Principle:

Principle #23Feedback

3Device complexity

If position deactivation is based on a single position detection system, then the device complexity is reduced, but the precision of deactivation timing deteriorates

Engineering Contradiction:

Improvecomplexity of position detection systemVSAvoidprecision of deactivation timing

Core Design Contradiction:

Device complexityVSManufacturing precision

Solution Approach 1:

The patent merges the outputs of two independent position detection systems (the fast machine control system and the slower but more reliable safety system) within the safety control. By combining and comparing the position values from both systems, the patent achieves precise deactivation timing that leverages the strengths of both systems without requiring a completely new complex detection system.

Inventive Principle:

Principle #5Merging (Combining)

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

Enhances the reliability of radiation detector deactivation, preventing unsafe operations by ensuring precise alignment and timing of safety control interventions, thereby improving safety and operational precision.

Implementation Method 1

a radiation source which provides radiation beams, and to a plurality of radiation detectors

Methodology Applied

Scientific EffectRadiation: Radiation

Data Source

PatentUS12427564B2Forming press and method for operating a forming press

Publication Date: 2025.09.30 FIESSLER ELEKTRONIK GMBH & CO KG

AI summary

A forming press having a machine bed on which a first tool is arranged, and having a tool carrier which is accommodated to the machine bed such that it can move relative thereto and further including a second tool and a drive for moving the tool carrier and a machine control for controlling the drive, and having a safety control for disabling the drive, wherein the safety control deactivates a first radiation detector if a first status signal, which results from a comparison between a first current position value with a first deactivation position value matches with a second status signal which results from a comparison between a second current position value with the first deactivation position value.