Weighing Device for Precise Spacer Frame Desiccant Filling
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Solution Overview
Problem
Existing methods for filling spacer frames with desiccant lack adequate control of the amount filled, leading to potential blockages and incomplete filling, which can result in faulty insulating glass panes due to insufficient moisture absorption.
Innovation Solution
A device and method utilizing a weighing system to monitor the weight of desiccant in a storage container, allowing real-time detection of blockages and ensuring precise filling by interrupting the process when the desired amount is reached, with features like shut-off and closing devices to regulate flow and overpressure for efficient filling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If flow sensors are used to detect desiccant flow, then the filling process can be monitored, but blockages cannot be reliably detected and false triggering occurs
Solution Approach 1:
The patent replaces optical flow sensors with a weighing device that directly measures the weight of desiccant in the storage container. This mechanical substitution eliminates the reliability issues of optical sensors by using direct weight measurement, which is not affected by blockages or static charge in the supply line.
Solution Approach 2:
The weighing device provides continuous feedback on the desiccant weight, allowing the control device to monitor the filling process in real-time and detect blockages by comparing expected weight loss with actual weight loss over time.
2Manufacturing precision
If filling is terminated after a predefined filling time, then the process is simple to control, but the frame may not be sufficiently filled leading to product failure
Solution Approach 1:
The control device receives continuous weight feedback from the weighing device and automatically terminates the filling process when the target weight is reached. This feedback-based control ensures precise filling quantity without requiring complex manual monitoring or multiple sensors.
Solution Approach 2:
The patent replaces complex optical measurement systems with a simple weighing mechanism that directly provides accurate filling quantity information, reducing overall system complexity while improving precision.
3Measurement precision
If optical flow sensors are used to quantify filling material, then movement detection is possible, but quantification is too imprecise for adequate control
Solution Approach 1:
The patent replaces optical flow sensors with a weighing device that directly measures the weight of desiccant. This substitution provides precise quantification of filling material by measuring mass directly, eliminating the imprecision of optical methods that can only detect movement rather than quantify amount.
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
Ensures accurate and complete filling of spacer frames with desiccant, preventing faulty production of insulating glass panes by detecting blockages and maintaining consistent moisture absorption capacity.
Implementation Method 1
a weighing device for determining the weight of the filler material contained in the storage container
Implementation Method 2
This desiccant absorbs any residual moisture in an enclosed gas space, preventing moisture from settling on the panes after the spaces between the panes are sealed
Data Source
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AI summary
The invention relates to a device (1) and a method for filling a spacer frame leg (2) or spacer frame (3) with a flowable filling material (4), wherein by determining a weight loss from a storage container (5) filled with filling material (4) an indirect determination of the weight of the filling material (4) filled into a spacer frame leg (2) or spacer frame (3) is possible.