Heated Seam Sealant Control for String-Free Metal Duct Forming
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Solution Overview
Problem
Existing sealant systems for metal duct seams suffer from excessive stringing of sealant and are affected by ambient temperature variations, making the application inefficient and sometimes insufficient.
Innovation Solution
A sealant system integrated with the roll forming machine, featuring a sealant supply and control module with a temperature sensor and heating source to maintain optimal sealant viscosity, and a nozzle placement system that avoids stringing by positioning the sealant hoses and nozzles to align with cam rollers for precise application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a sealant system uses a standard injection nozzle to apply sealant along metal seams, then the sealant application process is simple, but excessive stringing of the sealant occurs when the nozzle is moved away from the seam
Solution Approach 1:
The sealant delivery system is segmented into multiple hoses (first hose, second hose) with separate control mechanisms, allowing independent management of sealant flow paths to prevent stringing when the nozzle moves away from the seam
Solution Approach 2:
The system dynamically adjusts sealant delivery by controlling multiple hoses based on the nozzle's position relative to the seam, enabling the system to adapt and prevent stringing during movement
2Device complexity
If sealant is stored at ambient temperature, then the system is simple, but ambient temperature variations cause the sealant to become warmer or colder than desired, making application difficult and insufficient
Solution Approach 1:
The system changes the temperature parameter of the sealant by incorporating a heating source that maintains the sealant at a predetermined optimal temperature, ensuring consistent viscosity and application quality regardless of ambient conditions
Solution Approach 2:
A temperature sensor provides feedback on the sealant temperature, which is used by the control module to regulate the heating source and maintain the sealant at the desired temperature for reliable application
3Productivity
If a sealant system is integrated with the roll forming machine, then the system is compact and efficient, but it may interfere with the cam rollers of the roll forming machine
Solution Approach 1:
The sealant hoses are positioned and routed in specific locations that align with the cam rollers, allowing the sealant to be applied precisely at the seam location without the hoses or nozzle interfering with the cam roller operation
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 effectively prevents sealant stringing and ensures consistent application performance across varying temperatures, maintaining proper viscosity and airtight seals in metal duct seams.
Implementation Method 1
a sealant supply and control module with a temperature sensor and heating source to maintain optimal sealant viscosity
Implementation Method 2
a sealant supply and control module with a temperature sensor and heating source
Data Source
AI summary
A sealant system for operation with a metal workpiece comprises a frame, a cam assembly mounted to said frame, a sealant reservoir, a sealant application unit connected to said sealant reservoir, and a control module for coordinating operation of said cam assembly and said sealant reservoir, wherein said control module comprises a temperature sensor for monitoring the temperature of said sealant, an integrated heating system for heating said sealant and a controller in communication with said temperature sensor and said integrated heating system.