Die Level Compensation via Sensor Feedback

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Solution Overview

Problem

Die processing machines face inefficiencies due to inaccuracies and wear, leading to incomplete cuts or embossing, requiring frequent and labor-intensive compensation element adjustments, resulting in significant downtimes and increased manufacturing costs.

Innovation Solution

A die processing machine equipped with a mechanical action sensor and data processing unit that monitors pressure distribution and generates geometric data for improved compensation elements, allowing for automatic production and uniform pressure distribution, reducing downtimes and improving efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If manual preparation of compensation elements is used to level dies, then die processing quality is improved, but machine downtime increases and labor costs increase

Engineering Contradiction:
Improvedie level compensationVSAvoidmachine downtime
Core Design Contradiction:
Manufacturing precisionVSLoss of time

Solution Approach 1:

The patent replaces manual mechanical preparation of compensation elements with an automated system that uses sensors to detect die positions and a fabrication device to create compensation elements. This substitution eliminates manual labor and significantly reduces the time required to prepare compensation elements while maintaining accurate die leveling.

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

Solution Approach 2:

The system enables self-service by automatically detecting die position deviations using sensors and generating corresponding compensation elements through an integrated fabrication device. The machine performs its own compensation element preparation without external manual intervention, reducing both labor requirements and preparation time.

Inventive Principle:
Principle #25Self-service

2Manufacturing precision

If frequent adjustment of compensation elements is performed to account for wear, then processing quality is maintained, but productivity decreases

Engineering Contradiction:
Improveprocessing qualityVSAvoidproduction efficiency
Core Design Contradiction:
Manufacturing precisionVSProductivity

Solution Approach 1:

The patent implements a feedback mechanism where sensors continuously monitor die positions and wear conditions. Based on this feedback, the system automatically adjusts compensation elements or creates new ones as needed, maintaining processing quality without requiring frequent manual interventions that would reduce productivity.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system performs preliminary action by proactively detecting wear trends and preparing compensation elements before significant quality degradation occurs. This preventive approach allows for optimized timing of compensation element changes, minimizing disruptions to production flow while maintaining quality standards.

Inventive Principle:
Principle #10Preliminary action

3Manufacturing precision

If skilled operators are required to prepare compensation elements, then compensation accuracy is improved, but operational complexity increases

Engineering Contradiction:
Improvecompensation accuracyVSAvoidoperational simplicity
Core Design Contradiction:
Manufacturing precisionVSEase of operation

Solution Approach 1:

The patent replaces the need for skilled human operators with an automated system comprising sensors, data processing units, and a fabrication device. This system objectively measures die positions and generates compensation elements based on measured data, eliminating subjectivity and skill-dependent variations while simplifying operation to basic machine control.

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

Solution Approach 2:

The system creates accurate copies of the ideal compensation element geometry based on sensor measurements of actual die positions. By copying the measured deviations into the compensation element design, the system achieves high accuracy without requiring human interpretation or skill, thereby simplifying the operational process.

Inventive Principle:
Principle #26Copying

Data Source

PatentEP3153286B1Processing workpieces with dies being level compensated with a compensation element
Publication Date: 2020.08.12 BOBST MEX SA
  • EP3153286B1 patent drawingFigure 1
  • EP3153286B1 patent drawingFigure 2
  • EP3153286B1 patent drawingFigure 3

AI summary

A die processing machine (100) for processing a workpiece (190) comprises (a) a first platen (110); (b) a second platen (115); (c) a lifting system (120) for providing a relative movement between the two platens (110, 115) along a predeterm ined direction (z); (d) a die processing tool (130) being located in between the two platens (110, 115) and being mechanically connected with the first platen (110), wherein the die processing tool (130) comprises at least two dies (132); (e) a back plate (140) being mechanically connected with the second platen, wherein a workpiece (190) is insertable in between the back plate (140) and the die processing tool (130); (f) a compensation element (150) being located in between the first platen (110) and the die processing tool (130) for providing an appropriate leveling of the at least two dies; (g) a mechanical action sensor (160) being non-detachably located in between the two platens and providing mechanical action data signals which are indicative for mechanical actions being assigned to the at least two dies when processing the workpiece; and (h) a data processing unit (165) being configured for processing the mechanical action data signals such that geometric data are provided for a further compensation element (350) resulting, when processing further workpieces (190), in an at least partially uniform pressure distribution in processing regions being assigned to the at least two dies (132). Described are further a die processing system (4000) and a method for processing workpieces.