Inflatable Web Alignment via Tracking Sensor Feedback
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Solution Overview
Problem
Current systems for manufacturing inflated protective packaging materials face challenges with alignment, tracking, and tension control of inflatable webs, leading to noise, inefficiency, wear, downtime, and web wastage due to poor inflation and sealing.
Innovation Solution
A system for active alignment of inflatable webs using a spool, actuator, inflation nozzle, tracking sensor, and controller to maintain precise positioning and tension, ensuring consistent inflation and sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-speed inflation of webs is implemented, then productivity increases, but alignment and tracking control deteriorate
Solution Approach 1:
The system employs sensors to continuously monitor the position of the web as it moves through the inflation process. This position data is fed back to a controller that automatically adjusts the web's alignment and tracking in real-time, enabling high-speed operation while maintaining precise positioning control
Solution Approach 2:
The invention uses dynamically adjustable components including variable speed rollers and movable positioning mechanisms that can adapt their speed and position continuously during operation. This dynamic adjustment capability allows the system to maintain precise web alignment even at elevated inflation speeds where static positioning would fail
2Manufacturing precision
If web tension is increased to improve tracking, then alignment improves, but web damage and downtime increase
Solution Approach 1:
The system employs dynamically adjustable tensioning mechanisms with variable speed rollers that can modify web tension in real-time based on actual web position and speed requirements. This dynamic control allows sufficient tracking without the excessive static tension that causes web damage
Solution Approach 2:
Sensors continuously monitor web position and tension levels, providing feedback to the control system. The controller automatically adjusts tensioning roller speeds and positions to maintain optimal tracking while preventing excessive tension that would damage the web or cause downtime
3Device complexity
If manual alignment adjustment is used, then device complexity is reduced, but manufacturing precision deteriorates
Solution Approach 1:
The system incorporates automatic web positioning mechanisms with sensors and controllers that self-regulate web alignment and tracking without requiring manual intervention. The system monitors its own performance and makes automatic adjustments, providing precise web positioning through self-service operation
Data Source
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AI summary
A system for active alignment of an inflatable web with respect to an inflation nozzle as the web is dispensed from a roll for serial inflation by the inflation nozzle, the inflatable web including top and bottom sheets sealed together by transverse seals to define a series of inflatable chambers having an opening between the terminal ends of the transverse seals and proximate a longitudinal edge of the web for receiving inflation fluid from the nozzle, the system comprising: a spool adapted to support the roll so that the roll rotates about the spool as the inflatable web is withdrawn from the roll; an actuator arranged to adjust the position of the roll along the length of the spool; an inflation nozzle adapted to provide inflation fluid into the openings of the inflatable chambers as the web travels along a path of travel past the inflation nozzle; a tracking sensor comprising: a sensor arm pivotally mounted at a pivot point at a given location relative the inflation nozzle, the sensor arm having a contact portion, the sensor arm adapted to pivot on the pivot point as the terminal ends of the transverse seals of the web contact the contact portion of the sensor arm; and an analogue sensor adapted to detect the movement of the sensor arm and to generate an analogue signal varying in relation to the movement of the sensor arm; and a controller operative to receive the analogue signal and based on the analogue signal to send output to the actuator to adjust the position of the roll on the spool to maintain the transverse position of the web within a predetermined range.