Automated Filter Panel Assembly With In-Mold Fabric Tensioning

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Solution Overview

Problem

Current methods for producing filtering panels are time-consuming and prone to errors due to manual assembly, leading to increased production time and reject rates.

Innovation Solution

An automated equipment and method for assembling filtering panels that centers, tensions, and cuts the fabric on the frame, eliminating manual operations and ensuring precise alignment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If manual centering operations are used to assemble the fabric on the frame, then the equipment complexity is reduced, but the manufacturing precision and reliability deteriorate due to human errors

Engineering Contradiction:
Improveequipment complexityVSAvoidmanufacturing precision
Core Design Contradiction:
Device complexityVSManufacturing precision

Solution Approach 1:

The system uses the fabric's own features (edges, patterns, or markings) as reference points for automatic centering and alignment. The fabric essentially guides the positioning process through self-referential detection, eliminating the need for complex external positioning equipment while maintaining high precision.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

Manual mechanical centering operations are replaced with an automated optical or sensor-based detection system. The system uses imaging or sensing devices to detect fabric position and automatically adjusts positioning, substituting human mechanical operations with automated systems that provide both simplicity and precision.

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

2Device complexity

If manual assembly operations are performed, then the device complexity remains low, but the productivity decreases due to prolonged production time

Engineering Contradiction:
Improvedevice complexityVSAvoidproductivity
Core Design Contradiction:
Device complexityVSProductivity

Solution Approach 1:

The system enables continuous operation by automatically performing detection, positioning, and assembly operations in an integrated workflow. The fabric feeding, centering, and fixing operations occur continuously without manual intervention pauses, maintaining steady production flow and eliminating idle time between operations.

Inventive Principle:
Principle #20Continuity of useful action

Solution Approach 2:

The system performs preliminary detection and positioning operations automatically before the actual assembly takes place. The fabric is pre-positioned and verified for correct alignment before being fixed to the frame, ensuring that the main assembly operation proceeds quickly without rework or adjustments.

Inventive Principle:
Principle #10Preliminary action

3Device complexity

If manual centering operations are used, then the equipment simplicity is maintained, but the reliability decreases due to increased possibility of errors and rejects

Engineering Contradiction:
Improveequipment simplicityVSAvoidreliability
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The system incorporates automatic detection and feedback mechanisms that continuously monitor fabric positioning accuracy. The detection system provides real-time feedback on fabric alignment, and the control system automatically adjusts positioning parameters to correct any deviations, ensuring consistent high-quality results and eliminating human error.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

Human manual operations are completely replaced with automated detection and control systems. The system uses sensors, imaging devices, and automated actuators to perform all centering and positioning operations, eliminating the variability and errors inherent in manual operations while maintaining equipment simplicity through integrated automation.

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

Data Source

PatentEP4419231B9Machine and process for making filter panels
Publication Date: 2025.09.10 SAATI SPA
  • EP4419231B9 patent drawingFigure 1
  • EP4419231B9 patent drawingFigure 2
  • EP4419231B9 patent drawingFigure 3

AI summary

Method and related equipment for the production of filtering panels (8) made up of a filtering fabric (5) locked and tensioned inside a frame (7) consisting of two mutually coupled half frames (7a, 7b), wherein the moulding of said frame (7) of said panel (8), the unwinding of said fabric (5) from a feeding roller (4) and the tensioning of the same fabric (5) in the frame (7) are carried out, the latter being performed automatically during said moulding step. Compared to the solutions employed in the prior art, the equipment and the method of the invention offer the advantage of automating every operation for assembling the filtering panel, locking the fabric in a centered position on the frame in the making, tensioning it and cutting it out around the frame already moulded on the panel.