Abstract:
A mold apparatus for bending a glass sheet includes a main frame structure and a first mold arrangement having a first mold and a guide frame connected to the first mold. A first guide member of the guide frame is guidable by the frame structure such that it is inhibited from moving laterally in any direction, and a second guide member of the guide frame is guidable by the frame structure such that it is movable laterally away from the first guide member due to thermal expansion. The apparatus further includes a second mold arrangement including a second mold and a frame that supports the second mold such that the second mold is movable laterally relative to the frame. A sensor is also included for sensing position of one of the molds to determine whether the one mold is in a suitable position for mating with the other mold.
Abstract:
A system (10) for forming glass sheets includes a glass location sensing assembly (80) having a fluid switch (82) that is actuated by a roller conveyed glass sheet (G) to control operation of transfer apparatus (69) that transfers the glass sheet from the roller conveyor (22) to a forming mold (48) at a design position for forming. A frame of the sensing assembly (80) supports a carriage (124) on which the fluid switch (82) is mounted for lateral movement with respect to the direction of conveyance of the glass sheet (G) so as to sense its leading extremity. A lateral positioner (130) adjusts the lateral position of the carriage (124) and the fluid switch (82) mounted on the carriage.
Abstract:
A glass sheet press forming station (32) and method for press forming hot glass sheets with transverse curvature is performed by initially limiting the central forming of a glass sheet (G) between its end portions upon pickup from a roll conveyor to an upper mold (38) and prior to press forming with an associated lower mold (66) to prevent central area optical distortion of the press formed glass sheet.
Abstract:
A press station (12) and system (10) for forming glass sheets that are initially formed with an upwardly concave curved shape with end portions (86) and an intermediate portion (88) having straight line elements that are subsequently formed with curved shapes to provide curvature along transverse directions. The forming is performed by initially providing curvature to the straight line elements of the glass sheet end portions (86) while the intermediate portion (88) still has the straight line elements. The glass sheet intermediate portion is subsequently formed to provide curvature to its straight line elements so the entire glass sheet has curvature in transverse directions.
Abstract:
A glass sheet forming station and method utilize first and second upper molds and a lower mold to provide three stage forming. The glass is curved on the upper mold in the first stage but retains straight line elements transverse to the curvature. Transfer of the initially formed glass sheet from the first upper mold to the lower mold then provides the second stage of gravity forming and the glass sheet is then press formed between the second upper mold and the lower mold in the third stage which reduces optical distortion in the central viewing area of the formed glass sheet. In one embodiment the glass sheet is moved horizontally on the lower mold, and in another embodiment the glass sheet is moved horizontally on the first upper mold.