초록 ▼

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, including a fixed sealant dispensing head, a table that supports the insulated glass units, a fence, a depth sensor, a linear motion encoder,

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, including a fixed sealant dispensing head, a table that supports the insulated glass units, a fence, a depth sensor, a linear motion encoder, a metering device. The sealant dispensing head has a dispensing nozzle and a corner dam. The dispensing nozzle includes a floating insulated glass unit contact surface and the corner dam is shiftable between a retracted position and an extended position. A control unit 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.

대표청구항 ▼

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 ins

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; anda 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. 2. The insulated glass secondary edge sealing device as claimed in claim 1, wherein the table further comprises a plurality of multi-directional rollers. 3. The insulated glass secondary edge sealing device as claimed in claim 1, wherein the table defines an operator space therein. 4. The insulated glass secondary edge sealing device as claimed in claim 3, wherein the table further includes a movable insulated glass unit support that is movable within the operator space. 5. The insulated glass secondary edge sealing device as claimed in claim 1, wherein the floating insulated glass unit contact surface further comprises a ski having an aperture therethrough and the nozzle further comprising a nozzle tube through which sealant is dispensed, the nozzle tube extending at least partially through aperture in the ski. 6. The insulated glass secondary edge sealing device as claimed in claim 1, wherein the floating insulated glass unit contact surface is generally cylindrical in shape and has a radius of curvature of between about two and four inches. 7. The insulated glass secondary edge sealing device as claimed in claim 1, wherein the dispensing nozzle is shiftable between a retracted position and an extended position, and further comprising a nozzle garage into which or against which the dispensing is located in the retracted position, the nozzle garage being heated whereby the nozzle is maintained at a temperature that keeps hot melt sealant fluid. 8. The insulated glass secondary edge sealing device as claimed in claim 1, further comprising a human machine interface and wherein the controller receives signals from the human machine interface and controls the extension and retraction of the corner dam based on the received signals and further controls the measured flow of sealant based on signals from the human machine interface. 9. The insulated glass secondary edge sealing device as claimed in claim 1, wherein he controller further controls the measured flow of sealant to make a prestart application of sealant and controls the corner dam to shift the corner dam from the extended position to the retracted position following the prestart application of sealant. 10. The insulated glass secondary edge sealing device as claimed in claim 1, further comprising a dual dispensing nozzle, the dual dispensing nozzle having a first ski and a second ski adjacent one another and the first ski having first adjacent edge and the second ski having a second adjacent edge, the first adjacent edge and the second adjacent edge having interdigitated structures. 11. The insulated glass secondary edge sealing device as claimed in claim 1, further comprising a first proximity sensor operably coupled to the control unit that senses a presence of the insulated glass unit and sends signals to the control unit when the insulated glass unit is sensed. 12. The insulated glass secondary edge sealing device as claimed in claim 11, further comprising a second proximity sensor operably coupled to the control unit that senses an end of a side of the insulated glass unit and sends signals to the control unit when the end of the side of the insulated glass unit is sensed. 13. A method of edge sealing 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 method comprising: sensing the presence of an insulated glass unit to be edge sealed that has been placed on a table when the insulated glass unit abuts a fence adjacent the table and adjacent a fixed sealant dispensing head;activating a metering pump and a depth sensor in response to an input from a human machine interfacereceiving signals from a movement encoder that senses movement of the insulated glass unit parallel to the fence and relative to a fixed sealant dispensing head;receiving signals from the depth sensor indicating 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;receiving signals from the human machine interface indicating a distance between the two panes of glass; andcontrolling the metering pump to dispense a measured flow of sealant into a space that is bounded by the spacer and peripheral edges of the two panes of glass that extend beyond the spacer based on the depth of the inset of the spacer and the movement of the insulated glass unit parallel to the fence relative to the movement encoder. 14. The method as claimed in claim 13, further comprising extending a corner dam adjacent a 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 dispensing a prestart amount of sealant into the space bounded by the spacer, the peripheral edges of the two panes of glass that extend beyond the spacer, the corner dam and the insulated glass unit contact surface to seal a corner of the insulated glass unit. 15. The method as claimed in claim 14, further comprising retracting the corner dam after the dispensing of the prestart amount of sealant and prior to receiving signals from the movement encoder indicating movement of the insulated glass unit. 16. The method as claimed in claim 13, further comprising sensing an end of a side of the insulated glass unit and deactivating the metering pump to stop the flow of sealant when the end of the side is sensed. 17. The method as claimed in claim 13, further comprising receiving signals from a second depth sensor indicating the inset of a second spacer from the peripheral edges of the insulated glass unit when the insulated glass unit is abutted against the fence and controlling a second metering pump to dispense a measured flow of sealant into a second space that is bounded by the second spacer and peripheral edges of the two panes of glass that extend beyond the spacer based on the depth of the inset of the spacer and the movement of the insulated glass unit parallel to the fence relative to the movement encoder.