Adhesive Applicator with Active Backpressure Control
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Solution Overview
Problem
Existing adhesive applicators face delays in detecting flow changes, leading to dispensing inconsistencies and inaccuracies due to single drive systems that take time to respond to changes in adhesive flow, especially with inconsistent adhesive physical qualities.
Innovation Solution
A dispensing system with multiple pump assemblies and a controller that measures current draw from each pump assembly to adjust operating speeds individually, allowing for quick responses to flow changes and maintaining consistent adhesive dispensing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single drive powers a single pump assembly or plurality of pump assemblies, then the device complexity is reduced, but the response time to detect and adjust adhesive flow changes increases
Solution Approach 1:
The patent divides the adhesive delivery system into multiple independently controlled pump assemblies, each with its own drive mechanism. This segmentation allows each pump to be individually monitored and adjusted, enabling faster response to flow changes in specific channels without affecting the entire system.
Solution Approach 2:
The patent implements a monitoring system that detects changes in adhesive flow and provides feedback to the control system. This feedback mechanism enables real-time adjustments to pump operating speeds, reducing the time lag between detecting a flow change and implementing corrective action.
2Device complexity
If a single drive powers multiple dispensing modules, then the device complexity is reduced, but the manufacturing precision of adhesive dispensing deteriorates
Solution Approach 1:
The patent assigns separate drive mechanisms to each pump assembly that feeds dispensing modules. This segmentation enables independent control of each pump's operating speed, allowing precise adjustment of adhesive flow to each specific dispensing module and maintaining consistent dispensing quality across multiple channels.
Solution Approach 2:
The patent employs variable speed drives for each pump assembly, allowing dynamic adjustment of pump operating speeds based on real-time monitoring of adhesive flow characteristics. This dynamic control enables the system to adapt to changes in adhesive viscosity or flow rate while maintaining precise dispensing consistency.
3Manufacturing precision
If the applicator monitors adhesive flow changes, then the manufacturing precision improves, but the device complexity increases
Solution Approach 1:
The patent incorporates monitoring devices that detect changes in adhesive flow and provide feedback to the control system. This feedback loop enables automatic adjustment of pump operating speeds to maintain consistent adhesive flow, improving manufacturing precision while keeping the control logic straightforward and manageable.
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
The system ensures timely adjustments to pump operations, reducing dispensing inconsistencies and waste by monitoring current draws and adjusting pump speeds dynamically.
Implementation Method 1
the controller is configured to a) measure current draw from each of the plurality of pump assemblies
Implementation Method 2
a plurality of pump assemblies, where each of the plurality of pump assemblies is configured to pump the adhesive to a respective one of the plurality of dispensing modules at a respective operating speed
Data Source
AI summary
The present disclosure describes a method and system for controlling dispensing of adhesive from an applicator. The method includes pumping adhesive from a plurality of pump assemblies to a plurality of dispensing modules and measuring current draw from each of the plurality of pump assemblies. The method also includes determining an adjustment to an operating speed of each of the plurality of pump assemblies individually based on their respective current draws and adjusting the operating speed of each of the plurality of pump assemblies individually.