摘要:
A method and apparatus for tempering glass sheets. The glass sheets are heated to a tempering temperature in a furnace, in which the glass sheets are moved back and forth while supported upon rolls. The heated glass sheets are fed into a quench unit which is divided into two quenching zones with separately controlled blasting pressures. The glass sheets are driven without stopping through the first quenching zone into the second quenching zone, in which the glass is moved back forth upon the rolls. In the first quenching zone, cooling air is blasted onto glass sheet surfaces with slit nozzles. In the second quenching zone, cooling air is blasted onto glass sheet surfaces with hole-type nozzles.
摘要:
In one embodiment, a pulling roll for drawing glass sheet in a down-draw process includes a shaft member and a compliant cover assembly positioned on the shaft member. The compliant cover assembly includes at least one traction disk and at least one deflection limiting disk positioned on the shaft member. The at least one traction disk includes an annular hub and a plurality of spring elements integrally formed with the annular hub. The at least one deflection limiting disk includes at least one deflection limiting element positioned on each deflection limiting disk. The at least one deflection limiting element engages at least a portion of at least one traction disk upon a predetermined amount of inward radial deflection of the plurality of spring elements, thereby limiting the inward radial deflection of the plurality of spring elements.
摘要:
In one embodiment, a pulling roll for drawing glass sheet in a down-draw process includes a shaft member and a compliant cover assembly positioned on the shaft member. The compliant cover assembly includes at least one traction disk positioned on the shaft member. The at least one traction disk includes an annular hub and a plurality of spring elements integrally formed with the annular hub. The spring elements project outward from the annular hub such that an end of each spring element is positioned radially outward from a base of each spring element and is circumferentially offset relative to the base of each spring element.
摘要:
A method for producing strand guiding rollers from prefabricated and semifinished, stored components, which comprise at least roller bearings, prefabricated supporting shafts and semifinished roller shell starting material. The method is intended to produce and deliver a ready-to-assemble strand guiding roller in a short time with minimized stockkeeping costs. Roller bearings are in stock in a type series in accordance with the loads that occur, supporting shafts carrying the roller bearings are in stock in a type series in accordance with the loads that occur, and roller shells are in stock in the form of circumferentially worked bar or tube material in a type series with indeterminate length made to match various roller diameters. For assembly of a specific strand guiding roller, a roller shell with a roller diameter in accordance with the type series is cut off from the circumferentially worked bar or tube material in accordance with the type series to correspond to the intended body length, and is finished and assembled with the other components selected from the type series to form a strand guiding roller.
摘要:
A glass sheet is heated to a forming temperature in a heating furnace, the heated glass sheet is conveyed along a conveying plane defined by a plurality of rollers of a roller conveyer, and is moved up and down on the rollers according to a position of the glass sheet to curve a part of the conveying plane with respect to a glass sheet conveying direction to bend the glass sheet to have a desired curvature by its own weight. The rollers are curved rollers.
摘要:
A method for manufacturing a tempered glass sheet curved in at least one dimension is provided. A glass sheet (11) heated to near its softening temperature in a furnace (21) is bent into a bent glass sheet (12) of a predetermined shape. The bent glass sheet (12) is quenched by a quenching/secondary bending apparatus (40) with different cooling powers being applied to upper and lower surfaces of the bent glass sheet to thereby manufacture a further curved tempered glass sheet (10) of desired shape.
摘要:
A system (10) and method for cylindrically forming and quenching glass sheets includes a furnace (12), a bending station (16) at the exit end of the furnace for providing cylindrical bending, a roll bending station (18) located externally of the furnace downstream from its exit end and having a lower roll conveyor (20) and an upper roll former (21) with complementary cylindrical shapes to further cylindrically bend the glass sheet, and a quench station 24 to which the formed glass sheets are conveyed for rapid cooling to provide toughening.
摘要:
A glass sheet is heated to a forming temperature in a heating furnace, the heated glass sheet is conveyed along a conveying plane defined by a plurality of rollers of a roller conveyer, and is moved up and down on the rollers according to the position of the glass sheet to curve a part of the conveying plane with respect to the glass sheet conveying direction to bend the glass sheet to have a desired curvature by its own weight. The rollers are curved rollers.
摘要:
A heat-resistant pipe is arranged so as to traverse below a glass ribbon in a float bath of molten tin, and bubbles emanate from the heat-resistant pipe, thereby making the bottom surface (which is in contact with the tin) uneven. Alternatively, the bottom surface is made uneven with a roller for lifting the glass ribbon out of the float bath into an annealing furnace. In addition to these operations for making the glass surface uneven, a film can be applied to the top face of the glass ribbon (i.e. the surface that is not in contact with the tin) by CVD, supplying a mixed gas of raw material from coaters. Thus, the invention makes it possible to manufacture a glass sheet having an uneven surface efficiently, using a technique for processing the surface of a glass sheet that is suitable for a production line for float glass.