Glasstech, Inc.

Paul D Ducat

Michael J Vild

Thomas J Zalesak

Alfredo Serrano

Gilbert L Reed

Dean M Nitschke

David B Nitschke

Eustace H Mumford

James P Schnabel, Jr

Ronald A McMaster

Donivan M Shetterly

Terry A Bennett

Robert L Boyles, Jr

Robert W Brown

A glass sheet bending station includes a framework, lower and upper deformable molds for receiving therebetween a glass sheet to be bent, and lower and upper linkages that respectively support the lower and upper molds on the framework. Each linkage includes connector links that are fixedly connected to the associated mold and that have pivotal connections to each other, wherein the pivotal connections define pivot axes that are parallel to a shape defined by the connector links between the lower and upper linkages throughout the bending. Each linkage also has control links connected to the connector links thereof such that the control links are pivotable about axes that extend perpendicular to the shape defined between the lower and upper. Furthermore, at least one of the control links of each linkage is configured to permit glass sheet bending by linkage movement on one side thereof independently of the other side thereof.

Glass sheet bending station

A glass sheet bending method for glass sheet bending utilizes a primary actuating mechanism () for moving lower and upper mold support linkages () from a flat shape to a curved shape of a constant radius provided by connection links () and control links () of the linkages. The lower and upper linkages () having one pair of connector links () with control links () configured to allow a secondary actuating mechanism () to provide linkage movement on one lateral side thereof independently of on their other lateral side.

Glass sheet bending method

A glass sheet bending station () and method for glass sheet bending utilize a primary actuating mechanism () for moving mold support linkages to provide glass sheet bending with a constant radius and utilize control link detachable connections () that allow a secondary actuating mechanism () to provide bending of a glass sheet independently of linkage movement on the other side of the detached connections.

Glass sheet bending station and method for glass sheet bending

Apparatus ( ) and a method for roll bending heated glass sheets includes a pair of sets of bending rolls ( ) and a support and drive mechanisms ( ) that supports and rotatively drives the bending rolls at progressively increasing inclinations within a heating chamber ( ) of a roll bending station ( ) to provide engagement and bending at opposite lateral sides of a conveyed glass sheet. The bending rolls ( ) are positioned in their progressively inclined inclinations by cooperation of an elongated connector ( ) and clamps ( ) for providing securement to curved support ribs ( ) of an associated frame at the adjacent lateral side of the roll bending station housing.

Apparatus and method for roll bending heated glass sheets

A press bending station ( ) for heated glass sheets includes a lower wheel bed ( ) having a lower support ( ) and wheel assemblies ( ) with detachable connections ( ) to a drive mechanism ( ) of the lower support to provide rotational driving of a wheel ( ) of each wheel assembly. An actuator ( ) provides relative vertical movement that lifts a heated glass sheet received by the wheel bed ( ) to provide press bending thereof between a lower press ring ( ) and an upper press mold ( ). The wheel bed ( ) can have a curved shape or a flat shape. Connection and detachment of the wheel assemblies ( ) facilitates switching from one production job to the next.

Press bending station and method for job switching

A method for forming glass sheets is performed by a system ( ) that includes a furnace ( ) having a heating chamber ( ) in which a topside transfer device ( ) has a downwardly facing surface ( ) to which vacuum and pressurized air are supplied to receive and support a heated glass sheet from a conveyor ( ) without any direct contact. A forming station ( ) located externally of the furnace has a vertically movable upper mold ( ) whose temperature is not greater than 500&deg; C. The upper mold ( ) cooperates with a horizontally movable lower ring ( ) that transfers the heated glass sheet from the topside transfer device ( ) to the forming station under the control of a first actuator ( ). A second actuator ( ) moves the upper mold ( ) downwardly to cooperate with the lower ring ( ) in forming the glass sheet. The external forming station ( ) includes heat loss reducing apparatus ( ) for reducing heat loss of the hot glass sheet during the forming. A vacuum impulse is provided to the upper mold ( ) to assist in the forming. A cooling station ( ) cools the formed glass sheet.

Method for glass sheet forming

A method for forming glass sheets is performed by a system ( ) that includes a furnace ( ) having a heating chamber ( ) in which a vacuum platen ( ) has a downwardly facing surface ( ) to which a vacuum is supplied to support a heated glass sheet received from a conveyor ( ). A forming station ( ) located externally of the furnace has a vertically movable upper mold ( ) whose temperature is not greater than 500&deg; C. The upper mold ( ) cooperates with a horizontally movable lower ring ( ). A first actuator ( ) moves the vacuum platen ( ) vertically to transfer a heated glass sheet from the conveyor ( ) to the lower ring ( ) which is then moved by a second actuator ( ) to the forming station ( ). A third actuator ( ) then moves the upper mold ( ) downwardly to cooperate with the lower ring ( ) in forming the glass sheet. The forming station ( ) includes apparatus ( ) for reducing heat loss of the glass sheet during the forming. A vacuum impulse is provided to the upper mold ( ) to assist in the forming. A cooling station ( ) cools tHe formed glass sheet.

Method for forming glass sheets

A glass sheet quench station loader (42) and method for installing a quench module set (44) of lower and upper quench modules (46,48) includes a quench carriage (440) of a horizontally opening U shape that receives the quench modules for the loading. Mounts (446,454) mount the quench modules for movement to the quench station (40) and for subsequent movement from the quench station to permit installation of another quench module set for another production run. The quench loader (42) includes an overhead crane (447) and an overhead railway (448) along which the crane moves to move the quench carriage (440) and the quench modules mounted thereby to and from the quench station.

Method for installing glass sheet quench module set

Apparatus and a method for forming glass sheets includes a topside transfer platen (44) that releases a heated glass sheet onto a mold supported in an upper position by a mold support frame assembly (62) which then moves the mold vertically downward and rotationally to a lower position for movement horizontally on a track (66) from below the topside transfer platen for continuation of the forming. The apparatus includes an elevator mechanism (84) having a pair of elevators (86) and an associated pair of actuators (88) that are movable different extents in order to provide the vertical and rotational movement of the mold frame support assembly (62).

Apparatus and method for forming glass sheets

A mold support frame assembly including a pair of mold support frames between which a connector extends and cooperates with to provide a thermally stable center. Each mold support frame includes a linkage extending between a pair of spaced legs and having a connection to a mold positioning member adjacent a centering location thereof so that thermal expansion and contraction takes place about the centering location. The connector includes a second mold positioning member that extends between the pair of mold support frames and has a second mold centering location. A second linkage extends between the pair of mold support frames and has a connection to the second mold positioning member adjacent its second mold centering location to provide thermal expansion and contraction of the second mold positioning member about its second mold centering location.

Mold support frame assembly having thermally stable center

Quench loader for installing glass sheet quench module set

A system (20) and method for forming a glass sheet includes a locating assembly (28) for locating at least one glass sheet below a downwardly facing surface (58) of a topside support device (26) that receives the heated glass sheet from a conveyor (24, 24') in preparation for transfer thereof to an associated mold (33) on a mold shuttle (30). The locating assembly (28) includes a support (82) that is mounted outside of the system housing (22) at factory ambient temperature and has a horizontal arm (84) extending therefrom through the housing into its heated chamber (37) with first and second locators (92) and (94) for locating the suspended glass sheet as well as having a third locator that cooperates with the first and second locators to provide the glass sheet location. The first and second locators (92) and (94) are rotatively driven. In one embodiment designed to form a pair of glass sheets during each forming cycle, a pair of the horizontal arms (84) are used and a pair of the third locators (96) are provided mounted on the downwardly facing surface of the topside support device (26). In another embodiment for processing a single glass sheet during each cycle, the third locator (96) is mounted on another horizontal arm (84a) on which a fourth locator (97) is also mounted. Both air hearth and roll conveyors (24, 24') can be utilized to transfer the glass sheet to the topside support device (26) for the location.

Glass sheet forming method

A system (20) and method for forming a glass sheet includes a locating assembly (28) for locating at least one glass sheet below a downwardly facing surface (58) of a topside support device (26) that receives the heated glass sheet from a conveyor (24,24') in preparation for transfer thereof to an associated mold (33) on a mold shuttle (30). The locating assembly (28) includes a support (82) that is mounted outside of the system housing (22) at factory ambient temperature and has a horizontal arm (84) extending therefrom through the housing into its heated chamber (37) with first and second locators (92) and (94) for locating the suspended glass sheet as well as having a third locator that cooperates with the first and second locators to provide the glass sheet location. At least one of the first and second locators (92) and (94) is rotatively driven. In one embodiment designed to form a pair of glass sheets during each forming cycle, a pair of the horizontal arms (84) are used and a pair of the third locators (96) are provided mounted on the downwardly facing surface of the topside support device (26). In another embodiment for processing a single glass sheet during each cycle, the third locator (96) is mounted on another horizontal arm (84a) on which a fourth locator (97) is also mounted. Both air hearth and roll conveyors (24,24') can be utilized to transfer the glass sheet to the topside support device (26) for the location.

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Perrysburg, OH, United States of America

Paul D Ducat