Hot Melt Adhesive Flow Tracking at the Manifold Level
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Solution Overview
Problem
Conventional metering systems for hot melt adhesive dispensing are economically impractical and require excessive maintenance due to the need for multiple flow meters, and they are not retrofittable on existing systems, making it difficult to monitor adhesive output effectively.
Innovation Solution
A single flow meter is placed in direct fluid communication with the manifold of a hot melt adhesive system, coupled with a product detector and controller to measure and track the adhesive output, allowing for accurate monitoring and association of adhesive usage with specific products.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple flow meters are installed on each liquid discharge outlet to monitor adhesive flow independently, then measurement precision is improved, but device complexity and cost increase significantly
Solution Approach 1:
The patent consolidates multiple flow measurement functions into a single flow meter positioned at the manifold. This single flow meter measures the total adhesive flow before it branches to multiple applicators, eliminating the need for multiple individual flow meters while maintaining adequate monitoring capability through centralized measurement.
Solution Approach 2:
The single flow meter serves multiple functions: it monitors total adhesive consumption, tracks flow for multiple applicators simultaneously, and provides data for inventory management. This multi-functional approach replaces what would traditionally require multiple specialized devices.
2Measurement precision
If multiple flow meters are installed on each liquid discharge outlet to monitor adhesive flow independently, then measurement precision is improved, but maintenance costs increase due to more component parts
Solution Approach 1:
By merging multiple flow measurement functions into a single flow meter, the system reduces the number of components that require maintenance. Fewer flow meters mean fewer sensors, fewer moving parts, and consequently lower maintenance costs and less frequent service interventions.
3Measurement precision
If conventional metering systems are designed with multiple flow meters for each outlet, then measurement precision is improved, but adaptability decreases as they cannot be retrofitted on existing dispensing systems
Solution Approach 1:
The invention extracts the flow measurement function from the individual applicator level and relocates it to the manifold level. This repositioning allows the system to be added to existing dispensing systems without modifying each applicator, enabling retrofit installation while maintaining flow monitoring capability.
Solution Approach 2:
The single flow meter at the manifold provides universal monitoring capability for the entire dispensing system, making it adaptable to various configurations of applicators and suitable for retrofitting onto existing systems regardless of their specific setup.
4Device complexity
If a single flow meter is placed at the manifold to monitor total adhesive flow, then device complexity is reduced and cost decreases, but measurement precision for individual applicators may be compromised
Solution Approach 1:
The system uses feedback from the single flow meter's total flow measurement combined with information about applicator operation to infer individual applicator usage. The controller processes the total flow data along with applicator activation signals to determine and record adhesive consumption for each applicator, maintaining measurement precision without requiring multiple physical flow meters.
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
This solution provides a cost-effective and maintainable method for monitoring adhesive output, enabling precise tracking and reducing maintenance costs while being retrofittable to existing systems, thus improving process control and adhesive application efficiency.
Implementation Method 1
a flow meter having a flow inlet and a flow outlet, where the flow meter is configured to measure an amount of the adhesive flowing out of the flow outlet
Implementation Method 2
a heater associated with the adhesive supply for melting the solid or semi-solid hot melt adhesive into a liquid hot melt adhesive
Implementation Method 3
a pump for pumping the liquid hot melt adhesive from the heater into the first manifold
Data Source
AI summary
A hot melt adhesive system includes an adhesive supply for receiving solid or semi-solid hot melt adhesive, and a heater associated with the adhesive supply for melting the solid or semi-solid hot melt adhesive into liquid hot melt adhesive. An adhesive tracking system monitors an output of the liquid hot melt adhesive, and includes a flow meter having a flow inlet and a flow outlet. The flow meter measures an amount of the adhesive flowing out of the flow outlet. A product detector may be used to sense a presence of a product to which the adhesive is applied. A controller then determines the total amount of the liquid adhesive dispensed and the average amount of liquid adhesive dispensed per product.