IGU Sealing Apparatus with Localized Heating and Automated Dispensing
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Solution Overview
Problem
The existing methods for sealing insulating glass units (IGUs) are inefficient, requiring more energy to heat the sealant due to variations in glass types and thicknesses, leading to slower production lines, overheating, and increased cooling times, and manual adjustments for different IGU thicknesses, which result in inefficiencies and defects.
Innovation Solution
An apparatus and method for sealing IGUs that includes a frame with clamping arrangements and dispensing assemblies with nozzles for controlled dispensing of sealant, a controller for precise movement and sealant application, and a sensing system to monitor and adjust the sealant amount, ensuring consistent and repeatable application regardless of glass type or thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the line speed is reduced to heat the sealant of worst-case IGUs, then the sealant can be properly heated, but production productivity decreases
Solution Approach 1:
The patent applies different heating zones with varying temperature profiles along the conveyor path, allowing targeted heating of the sealant without overheating the entire IGU. This enables faster line speeds while ensuring adequate sealant activation.
Solution Approach 2:
The system dynamically adjusts heating parameters (temperature, exposure time) based on real-time detection of IGU characteristics such as glass type, thickness, and coating properties, optimizing the heating process for each specific case rather than using a conservative worst-case setting for all units.
2Temperature
If IGUs are overheated at the surface to ensure sealant heating, then the sealant can be activated, but cooling time increases and energy is wasted
Solution Approach 1:
The heating system targets specifically the sealant application areas with concentrated thermal energy while minimizing heat exposure to the glass surfaces. This localized heating approach activates the sealant without causing excessive surface overheating, thereby reducing cooling time.
Solution Approach 2:
The system uses periodic or pulsed heating cycles that deliver sufficient thermal energy to the sealant in short bursts, preventing heat accumulation in the glass surfaces and reducing the overall thermal mass that would require cooling.
3Adaptability or versatility
If manual adjustments are made for different IGU thicknesses, then the press can accommodate various configurations, but operation complexity and time increase
Solution Approach 1:
The system incorporates sensors that automatically detect IGU thickness and configuration, then self-adjust the press roller spacing and heating parameters without requiring manual intervention. This eliminates the need for operators to manually adjust settings for different IGU types.
Solution Approach 2:
The system uses real-time feedback from sensors measuring IGU characteristics to automatically adjust press and heating parameters, creating a closed-loop control system that adapts to varying IGU specifications without manual input.
4Manufacturing precision
If consistent sealant application is achieved through automated systems, then quality improves, but device complexity increases
Solution Approach 1:
The patent replaces complex mechanical dispensing mechanisms with automated material delivery systems controlled by computerized algorithms. This uses software-based control rather than complex mechanical linkages to achieve precise and consistent sealant application.
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 enables efficient, consistent, and repeatable sealing of IGUs, reducing energy consumption, minimizing defects, and allowing for faster production with automated adjustments, resulting in improved quality and productivity.
Implementation Method 1
sensing system comprising first and second sensors for monitoring and controlling the amount of sealant being dispensed
Implementation Method 2
The pre-pressed insulating glass unit is passed through an IGU oven to melt or activate the sealant
Implementation Method 3
The pre-pressed insulating glass unit is then passed through a press that applies pressure to the glass and sealant and compresses the IGU to a selected pressed unit thickness
Data Source
AI summary
An apparatus for sealing an insulating glass unit includes a frame for supporting first and second clamping arrangements. The clamping arrangements support the insulating glass unit during a sealing operation. First and second dispensing assemblies are connected to the frame and movable relative to the frame. Each first and second dispensing assembly includes a nozzle for controlled dispensing of a sealant along a prescribed portion of the supported insulating glass unit during the sealing operation.