Window Spacer Frame Punch Assembly Corner Sealing
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Solution Overview
Problem
Insulating glass units (IGUs) face issues with atmospheric water vapor infiltration due to discontinuities at frame corners and inefficient manual operations in fabricating spacer frames, leading to production delays and scrap generation.
Innovation Solution
An apparatus and method for forming a spacer frame assembly using a head arrangement with a reciprocating motion and an annular die support with wedge-shaped ridges, which supports dies for engaging the spacer frame, allowing for efficient cutting, bending, and sealing of the frame, reducing manual operations and enhancing vapor seal integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual operations are used for cutting, bending, and sealing spacer frames, then flexibility and adaptability are maintained, but production efficiency is reduced and scrap is generated
Solution Approach 1:
The apparatus is divided into distinct functional modules: a head arrangement for reciprocating motion, an annular die support for positioning, and multiple dies for different operations. This segmentation allows each component to perform its specific function efficiently while maintaining overall system flexibility.
Solution Approach 2:
The apparatus integrates multiple operations (cutting, bending, sealing) into a single automated system that processes spacer frames continuously. The universal apparatus eliminates the need for separate manual operations, thereby increasing productivity without proportionally increasing complexity.
2Ease of manufacture
If V-shaped notches are cut at corner locations to enable bending, then frame assembly is facilitated, but vapor infiltration paths are created at corners
Solution Approach 1:
Sealant is applied to the spacer frame at corner locations before the bending operation. This preliminary sealing action ensures that the sealant is already in place to block vapor paths before the V-shaped notches are cut and the frame is bent, thereby maintaining vapor seal integrity while still enabling easy assembly.
3Strength
If corner keys are used to connect frame elements, then corner strength is improved, but infiltration paths are formed at key-juncture interfaces
Solution Approach 1:
Sealant is applied at corner locations before assembling the corner keys. This ensures that the sealant is already in place to block infiltration paths at the key-juncture interfaces, maintaining both corner strength and vapor seal integrity.
4Manufacturing precision
If sealant is applied after frame assembly, then positioning accuracy is maintained, but sealant quantity at corners is reduced leading to leakage paths
Solution Approach 1:
Sealant application is performed as a preliminary action at corner locations before the final frame assembly and folding operations. This ensures adequate sealant quantity is deposited at corners where infiltration paths are most likely to occur, while the subsequent assembly operations maintain positioning accuracy.
Data Source
Figure 1
Figure 2
Figure 2A
AI summary
An apparatus and method is provided for forming a spacer frame assembly used in the construction of insulating glass unit windows. The apparatus comprises a head arrangement having a body with first and second ends, the first end for coupling to a cylinder that advances and retracts the head arrangement in a reciprocating motion during operation. The second end includes an annular wedge-shaped ridge for coupling to a second annular wedge-shaped ridge of a die support, collectively the wedge-shaped ridge and second wedge-shaped ridge form a contact region to form a torus surface. The die support has at least one die for engaging a spacer frame assembly during operation. The apparatus further comprises a collar having a torus-shaped recess corresponding with the torus surface to nest and couple the body to the die support.