Back Bedding Glazing Applicator for Window Sash Positioning
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Solution Overview
Problem
The traditional window and door manufacturing process is hindered by the long cure time of back bedding glazing compounds, which delays production and increases costs due to the need for staging and racking of glazed sashes.
Innovation Solution
A system comprising position assemblies and a back bedding glazing compound applicator assembly that allows for the rapid application of glazing compound after the glass is positioned, decoupling the compound's open time from the glass laying process, enabling faster throughput and reduced staging time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional back bedding glazing compound application method is used with multi-step glass laying process, then proper glass positioning and centering can be achieved, but significant manufacturing delay and increased costs occur due to long cure time requirements
Solution Approach 1:
The glass layer is positioned and centered on the glazing leg before the back bedding glazing compound is applied. Setting blocks are temporarily installed to assist with centering, and the glass is manually adjusted to proper position. This preliminary positioning action eliminates the need to wait for compound cure time to achieve proper glass placement, allowing fast-curing compounds to be used without compromising positioning accuracy.
Solution Approach 2:
The glazing process is segmented into distinct sequential steps: (1) glass positioning on glazing leg, (2) setting block installation for centering assistance, (3) back bedding glazing compound application, and (4) glazing bead installation. By separating the positioning function from the bonding function, the process allows glass to be properly positioned before compound application, eliminating the constraint where positioning had to wait for compound cure time.
2Productivity
If fast-curing back bedding glazing compound is used, then manufacturing throughput increases and staging time is reduced, but the traditional multi-step glass laying process cannot accommodate proper glass positioning
Solution Approach 1:
Glass positioning is performed as a preliminary action before compound application. The glass layer is manually positioned and centered on the glazing leg while the compound is still in its open (un cured) state, allowing ample time for adjustment without concern for cure time limitations. This enables the use of fast-curing compounds while maintaining ease of glass positioning.
Solution Approach 2:
Setting blocks serve as intermediary tools that assist with glass centering and positioning. These temporary blocks are installed around the glass perimeter to provide physical reference points and support during the positioning process, making it easier to achieve proper glass placement before the back bedding compound is applied and before fast curing occurs.
3Manufacturing precision
If traditional glazing process with long cure time is used, then proper glass positioning can be achieved, but expensive curing pallets and staging equipment are required
Solution Approach 1:
Glass centering is achieved as a preliminary action through manual positioning and temporary setting blocks before compound application. Since the glass is positioned before the compound cures, there is no need for complex curing pallet systems that provide precision positioning during cure time. The glass remains stable during fast curing without requiring expensive staging equipment.
Solution Approach 2:
The function of precision positioning during cure time is extracted from the curing process itself. Instead of relying on complex curing pallets to maintain glass position during extended cure periods, the positioning function is performed separately beforehand through manual placement and temporary setting blocks, eliminating the need for expensive positioning-maintaining curing equipment.
Data Source
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AI summary
A system for glazing a sash (20) is disclosed. The system comprises at least two positioner assemblies (54), a back bedding glazing compound applicator assembly (42), and a stabilizer assembly (64). The positioner assemblies (54) each include a position member (56) that is selectively slidable between a stored position and an extended position. A distal end of the position member (56) is extended outwardly from a housing (61) and contacts a glazing leg (22) of the sash (20) when the position member (56) is moved into the extended position. The back bedding glazing compound applicator assembly (42) is configured to move from a stored position to a dispensing position and includes a nozzle head (200) that is configured to fit within a gap (66) defined between an interior surface (32) of the sash (20) and an outer edge (68) of a viewing element (24) disposed within an opening (26) of the sash (20) when the back bedding glazing compound applicator assembly (42) is in the dispensing position. The back bedding glazing compound applicator assembly (42) is fluidly connected to a back bedding glazing compound supply source. The stabilizer assembly (64) is configured to retain the viewing element (26) in a fixed position with respect to the sash (20) while back bedding glazing compound is being dispensed by nozzle head (200). A method (100) of glazing a sash is also disclosed.