Pouch Registration Control via Optical Feedback

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Solution Overview

Problem

Manual registration of a bandolier of pouches with a remote knife mechanism is prone to operator errors due to the need for maintaining proper alignment between the bandolier and cutting blades, leading to inconsistencies in pouch separation.

Innovation Solution

An automatic registration control system using optical monitoring and electronic sensing to adjust the input flow of pouches relative to the cutting elements, with a programmable controller generating signals for mechanical adjustments to maintain precise alignment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If manual registration control is used to align the bandolier with the knife mechanism, then the system complexity is reduced, but the manufacturing precision and reliability of pouch separation deteriorate due to operator errors

Engineering Contradiction:

Improvecontrol system complexityVSAvoidpouch separation precision

Core Design Contradiction:

Device complexityVSManufacturing precision

Solution Approach 1:

The patent replaces manual mechanical registration adjustment with an optical sensing system that uses cameras and image processing to detect the position of pouches and generate automatic adjustment signals, eliminating operator intervention while maintaining high precision alignment between the bandolier and knife mechanism

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system continuously monitors the position of the bandolier relative to the knife mechanism using optical sensors and provides real-time feedback signals to the control system, which automatically adjusts the registration to maintain precise alignment, creating a closed-loop control system that improves both precision and reliability

Inventive Principle:

Principle #23Feedback

2Device complexity

If manual registration adjustment is used, then the device complexity is lower, but the productivity deteriorates due to time-consuming operator intervention and frequent adjustments

Engineering Contradiction:

Improveregistration control complexityVSAvoidpouch production rate

Core Design Contradiction:

Device complexityVSProductivity

Solution Approach 1:

The system performs self-adjustment of the bandolier registration automatically based on optical sensor data, eliminating the need for operator intervention and allowing continuous operation at high speed without停机 for manual adjustments, thereby maintaining high productivity

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The optical monitoring and automatic adjustment system operates continuously during pouch production, ensuring uninterrupted alignment correction and maintaining constant productivity without the interruptions inherent in manual registration adjustment

Inventive Principle:

Principle #20Continuity of useful action

3Manufacturing precision

If optical monitoring and automatic control systems are implemented, then the manufacturing precision of pouch separation is improved, but the device complexity increases due to additional sensors and control mechanisms

Engineering Contradiction:

Improvecutting alignment precisionVSAvoidregistration control system complexity

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent replaces complex mechanical adjustment mechanisms with an optical sensing and electronic control system that uses image capture and digital signal processing to achieve precise registration, reducing mechanical complexity while maintaining or improving precision

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system creates an optical copy or image of the pouch position and uses this digital representation to determine alignment status and generate correction signals, replacing the need for direct mechanical measurement and adjustment mechanisms

Inventive Principle:

Principle #26Copying

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

Ensures consistent and precise separation of pouches by dynamically adjusting the position of the bandolier along the feed path, reducing operator intervention and improving the accuracy of side seam cuts.

Implementation Method 1

an optical image sensor generates position signals indicative of a position relative to the optical reference of the measurement references of moving pouches along the feed path

Methodology Applied

Scientific EffectOptical imaging: Photography

Data Source

PatentUS11273570B2Pouch registration monitoring and control system

Publication Date: 2022.03.15 NVENIA LLC

AI summary

A system for controlling registration on a pouch knife machine of a longitudinally extending bandolier of content containing pouches separated by transverse seal seams moving along a feed path, with each pouch having a measurement reference. The machine includes a knife mechanism, a friction drag mechanism, and a friction drag adjustment mechanism. The system includes an optical reference, an optical image sensor, and a controller. The controller is configured to determine an actual position of the measurement reference relative to an optical reference, determine an alignment input based upon the actual position of the measurement reference relative to the optical reference, determine an alignment difference between a target position and the alignment input, and generate an adjustment command to change the position of the bandolier along the feed path after the alignment difference exceeds the operating range for the target position.