Pouch Forming Machine Calibration via Material Characterization
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Solution Overview
Problem
Automatic pouch forming machines require significant expertise and time to adjust operating parameters for different materials and dimensions, often resulting in inefficiencies and material waste due to the 'trial and error' approach, which is not environmentally friendly.
Innovation Solution
A method and device for calibrating automatic pouch forming machines that involves performing a test operation on the pouch precursor, characterizing its material, comparing it to known materials, and automatically adjusting the machine's parameters using a processing unit, eliminating the need for expert intervention and reducing waste by determining optimal welding pressure, temperature, and time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual trial and error adjustment is used to calibrate operating parameters, then expert knowledge can be applied to achieve correct sealing, but calibration time and material waste increase significantly
Solution Approach 1:
The system performs self-calibration by automatically measuring material properties through test welds and adjusting operating parameters without requiring expert intervention. The machine service itself (the welding unit) performs the measurement and adjustment functions, eliminating the need for external expert calibration services.
Solution Approach 2:
The system implements a closed-loop feedback mechanism where test welds are performed, the results are measured and analyzed, and the operating parameters are automatically adjusted based on the measured data. This feedback cycle enables automatic adaptation to material variations without manual intervention.
2Reliability
If manual trial and error adjustment is used to calibrate operating parameters, then expert knowledge can be applied to achieve correct sealing, but material waste increases due to multiple test runs
Solution Approach 1:
The system performs preliminary measurement and characterization of the material properties before actual production welding. By conducting test welds and analyzing material behavior in advance, the system determines optimal parameters beforehand, preventing material waste during production calibration.
Solution Approach 2:
The patent replaces manual mechanical trial-and-error adjustment with an automated measurement and control system. Sensors and processing units substitute for human expertise, automatically determining optimal parameters and eliminating the need for multiple physical test runs that waste material.
3Reliability
If frequent calibration is performed to account for material variations, then sealing quality is maintained, but productivity decreases due to repeated adjustments
Solution Approach 1:
The system enables continuous operation by performing rapid automated calibration that does not interrupt production flow. The calibration process is integrated into the production line, allowing the machine to quickly adapt to material variations without stopping or significantly slowing down production.
Solution Approach 2:
The system automatically adjusts operating parameters (temperature, pressure, time) based on real-time material characterization. By dynamically changing parameters in response to material variations, the system maintains sealing quality without requiring manual intervention or production stoppage.
4Reliability
If manual calibration by qualified technicians is used, then operating parameters can be adjusted based on expertise, but device complexity increases due to skilled labor requirements
Solution Approach 1:
The patent replaces the complex human expert system with an automated measurement and control system. Sensors, actuators, and processing units substitute for qualified technicians, eliminating the need for skilled labor while maintaining or improving parameter accuracy.
Solution Approach 2:
The machine performs self-calibration using its own welding unit and measurement systems, eliminating the need for external expert intervention. The system service itself provides the calibration function, simplifying the overall system architecture by removing the human expert component.
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
Enables precise and efficient calibration of automatic pouch forming machines without expert knowledge, reducing waste and environmental impact by defining optimal operating parameters through a systematic approach, ensuring consistent and correct sealing without trial and error.
Implementation Method 1
pressing the band folded on itself of the pouch precursor with a punch, said punch being heatable at least at one tip by a heat source at a given temperature
Implementation Method 2
a welding unit of the folded band configured for making welding lines
Data Source
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AI summary
The present invention relates to a method and to a system for calibrating an automatic pouch forming machine comprising an unwinding unit for unwinding a pouch precursor made of a band of a flexible heat-sealable film in a forward movement direction; a folding unit of the band configured for folding said band in half on itself along at least one folding line parallel to the forward movement direction, a welding unit of the folded band configured for making welding lines at least in a direction transverse to the forward movement direction of the folded band; and a drive unit for moving the band in the forward movement direction; the method comprising the steps of: - performing a test operation (1000) on the material of the pouch precursor; - performing a characterisation (2000) of the material of the pouch precursor based on the results of the testing of the material performed; - conducting a comparison (3000) of the characterised material of the pouch precursor with other known materials on which the steps of the test operation (1000) and the characterisation have already been performed, said known materials being further related to known operation parameters of a pouch forming machine including welding pressure, welding temperature and welding time; and - automatically adjusting the automatic pouch forming machine (4000) with operating parameters, including welding pressure, welding temperature and welding time for the tested material of the pouch precursor, obtained from the result of conducting the comparison (3000) and an algorithm treating said results; wherein the step of performing a test operation (1000) is performed by: - pressing the band (1100) folded on itself of the pouch precursor with a punch (10), said punch (10) being heatable at least at one tip by a heat source at a given temperature; and - measuring the penetration (1200) of the punch (10) in the band folded on itself with a measurement device (40); and wherein the steps of conducting a comparison (3000) and automatically adjusting the automatic pouch forming machine (4000), are implemented by a processing unit (2). The present invention also relates to a device for characterizing a pouch precursor made of flexible heat-sealable film, said device comprising: a punch; a heat source for heating at least a tip of the punch to a given temperature; an actuator for pressing the punch against the pouch precursor made of heat-sealable film, with a given pressure; a measurement device for measuring the penetration of the punch in the pouch precursor, under the given conditions of temperature and pressure.