Adhesive Dispensing Nozzle With Tapered Ports to Prevent Clogging
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Solution Overview
Problem
Existing adhesive dispensing devices face challenges in accurately controlling the amount and location of adhesive application, and nozzles often clog due to adhesive residue.
Innovation Solution
A dispensing unit with nozzles featuring a nozzle body, projections for protection, and a metering valve system that dispenses adhesive as discrete droplets, preventing clogging through a tapered dispensing port design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If adhesive is dispensed through conventional nozzles, then adhesive application is achieved, but the nozzles easily become clogged from adhesive residue
Solution Approach 1:
The dispensing system divides the adhesive flow into multiple discrete droplets through multiple dispensing ports rather than a single continuous stream, reducing residue buildup in each individual port
Solution Approach 2:
The exterior end of the dispensing port features a sharpened, tapered portion that changes the geometric parameters of the port opening, assisting adhesive separation and preventing sticking and clogging
2Manufacturing precision
If manual adhesive application is used, then accuracy in amount and location is achieved, but automation is lost
Solution Approach 1:
The patent replaces manual mechanical application with an automated dispensing system that uses a metering valve to control adhesive flow and a pressure source to deliver precise droplets to predetermined locations
Solution Approach 2:
The dispensing system automatically controls the metering valve and pressure application to dispense precise amounts of adhesive without requiring manual intervention for each dispensing action
3Area of stationary object
If continuous adhesive flow is used, then coverage is improved, but control over amount and location is reduced
Solution Approach 1:
The system uses periodic actuation of the metering valve and pressure source to dispense adhesive in discrete, controlled droplets at specific intervals and locations rather than continuous flow
Solution Approach 2:
The adhesive application is segmented into multiple discrete droplets delivered through multiple ports, allowing precise control of total amount and distribution across the target area
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 adhesive application with controlled droplet dispensing, minimizing clogging and ensuring consistent operation.
Implementation Method 1
a pressure source is in communication with the nozzle body recesses of the dispensing nozzles. The pressure source may be capable of applying pressure to the nozzle body recesses. The dispensing nozzles dispense a discrete amount of adhesive as discrete droplets from the adhesive dispensing ports onto a substrate upon application of pressure from the pressure source within the nozzle body recess.
Data Source
AI summary
A dispensing unit for an adhesive or other viscous liquid includes one or more dispensing nozzles for delivery of the adhesive to a desired surface. The dispensing nozzles each include one or more dispensing ports that are in fluid communication with a nozzle body recess defined through a nozzle body of the dispensing nozzle. Adhesive that is supplied to the nozzle body recess may be thrown laterally from the dispensing nozzle via the dispensing ports. Each of the dispensing ports may be positioned between a pair of projections. The projections protect the dispensing port from breaking due to contact with the surface on which the adhesive is applied or contact with another exterior object.