Patent ID: 8435367
Filing Date: 2013-05-07
Classification: E06B,Y10T

Abstract:
1. An insulated glass secondary edge sealing device that dispenses sealant to insulated glass units including at least two panes of glass separated by a spacer, the spacer being located along a periphery of the insulated glass unit and inset from peripheral edges of the insulated glass unit, the insulated glass edge sealing device comprising: a sealant dispensing head; a table that supports the insulated glass units to be edge sealed, the table being structured such that the insulated glass units can be moved with minimal restriction in all horizontal directions while supported by the table, the sealant head being fixed in location relative to the table; a fence extending adjacent the table, the fence being structured to abuttably limit movement of the insulated glass unit relative to the table and to permit linear movement of the insulated glass unit parallel to and in contact with the fence, the sealant dispensing head being located adjacent the fence and fixed relative the fence and the table; the sealant dispensing head having a dispensing nozzle and a corner dam, the dispensing nozzle including a floating insulated glass unit contact surface sized to abut the peripheral edges of the at least two panes of glass of the insulated glass unit and the corner dam being adjacent to the floating insulated glass unit contact surface and being shiftable between a retracted position and an extended position and when in the extended position being oriented at substantially a right angle to the floating surface and extending generally perpendicular beyond the fence and toward the table; a depth sensor that senses a depth of the inset of the spacer from the peripheral edges of the at least two glass panes when the insulated glass unit is abutted against the fence; a linear motion encoder that monitors linear movement of the insulated glass unit in a direction parallel to the fence; a metering device operably coupled in fluid communication to the dispensing nozzle to dispense the sealant; and a control unit that receives signals from the depth sensor and the linear motion encoder and controls the metering device to dispense a measured flow of sealant based on the depth of the inset of the spacer and the movement of the insulated glass unit parallel to the fence and relative to the encoder; the dispensing nozzle being positionable so that the measured flow of sealant is discharged into a space bounded by the spacer and peripheral portions of the two panes of glass from the nozzle to accurately fill the space with sealant while the insulated glass unit is moved past the dispensing nozzle in contact with the fence.