US3485618A - Glass sheet conveying apparatus - Google Patents
Glass sheet conveying apparatus Download PDFInfo
- Publication number
- US3485618A US3485618A US612556A US3485618DA US3485618A US 3485618 A US3485618 A US 3485618A US 612556 A US612556 A US 612556A US 3485618D A US3485618D A US 3485618DA US 3485618 A US3485618 A US 3485618A
- Authority
- US
- United States
- Prior art keywords
- glass
- bending
- sheets
- mold member
- glass sheet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000011521 glass Substances 0.000 title description 29
- 238000005452 bending Methods 0.000 description 25
- 238000007493 shaping process Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000005357 flat glass Substances 0.000 description 2
- PSFDQSOCUJVVGF-UHFFFAOYSA-N harman Chemical compound C12=CC=CC=C2NC2=C1C=CN=C2C PSFDQSOCUJVVGF-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 241000234282 Allium Species 0.000 description 1
- 235000002732 Allium cepa var. cepa Nutrition 0.000 description 1
- 241001379910 Ephemera danica Species 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000012858 resilient material Substances 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G39/00—Rollers, e.g. drive rollers, or arrangements thereof incorporated in roller-ways or other types of mechanical conveyors
- B65G39/02—Adaptations of individual rollers and supports therefor
- B65G39/06—Adaptations of individual rollers and supports therefor the roller sleeves being shock-absorbing, e.g. formed by helically-wound wires
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/02—Re-forming glass sheets
- C03B23/023—Re-forming glass sheets by bending
- C03B23/03—Re-forming glass sheets by bending by press-bending between shaping moulds
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B35/00—Transporting of glass products during their manufacture, e.g. hot glass lenses, prisms
- C03B35/14—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands
- C03B35/16—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands by roller conveyors
- C03B35/18—Construction of the conveyor rollers ; Materials, coatings or coverings thereof
- C03B35/182—Construction of the conveyor rollers ; Materials, coatings or coverings thereof specially adapted for bent sheets or ribbons
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B35/00—Transporting of glass products during their manufacture, e.g. hot glass lenses, prisms
- C03B35/14—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands
- C03B35/16—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands by roller conveyors
- C03B35/18—Construction of the conveyor rollers ; Materials, coatings or coverings thereof
- C03B35/186—End caps, end fixtures or roller end shape designs
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2225/00—Transporting hot glass sheets during their manufacture
- C03B2225/02—Means for positioning, aligning or orientating the sheets during their travel, e.g. stops
Definitions
- the present invention relates generally to supporting and conveying apparatus and more particularly to improved rotary apparatus of this character for movably supporting both flat and bent glass sheets while in a heatsoftened condition.
- This invention has proven to be of particular utility in handling heat-softened glass sheets within a horizontal type bending apparatus and will be so described herein by way of example.
- the primary object of the present invention is to provide a conveyor roll which offers adequate support to both flat and curved sheets by flexing of a portion of the roll, as required, to conform in shape to the sheets supported upon it.
- FIG. 1 is a side elevation of a typical horizontal press bending apparatus showing a glass sheet to be bent supported on rolls incorporating the present invention
- FIG. 2 is a partial cross-sectional view taken along the line 22 of FIG. 1 depicting the glass sheet in the flat before commencement of the bending operation;
- FIG. 3 is a partial cross-sectional view similar to FIG. 2 but depicting the condition of the glass sheet and supporting rolls after completion of the bending operation;
- FIG. 4 is a fragmentary longitudinal sectional view of an end portion of one roll illustrating structural details of one embodiment of the invention.
- FIG. 5 is an enlarged, fragmentary, longitudinal sectional view of a roll of the invention carrying a glass sheet under condition as illustrated in FIG. 3.
- a typical press bending apparatus as shown at 10 consists mainly of a rigid framework 11 in which are mounted a substantially stationary upper male mold member 12 and a movable lower female mold member 13, vertically movable Within the rigid framework.
- the mold members are provided with complemental shaping surfaces, the shaping surface 14 of the upper mold member 12 being generally a continuous surface, while the complemental shaping suface 15 of the lower mold member 13 is of the ring-type which engages only the marginal edge portions of the glass sheet.
- the upper mold member 12 is supported from the framework 11 by bolts 16 surrounded by springs 17 which act as cushions to prevent excessive pressure being exerted on the glass by the action of lower mold member 13.
- the lower mold member 13 is supported by guide members 18 which allow vertical movement only, said vertical movement being provided by the ram 19 of a pressure-actuated cylinder 20 which bears against the lower mold member.
- Flat glass sheets 21 to be bent are transferred into the bending apparatus 10 by conveyor rolls 22 and located in bending position by engagement of their leading edges with stops 23 (one of two shown) each of which is moved by a pressure-actuated cylinder 24 into and out of the sheet path.
- a photoelectric cell 25 senses the entry of the glass sheets into the bending apparatus, as the sheets interrupt the beam L from light source 26, and initiates the bending cycle by actuating timing mechanisms which control the action of press cylinder 20 to raise and lower the mold member 13 by the ram 19 and in sequence lower and raise the locator stops by the cylinders 24.
- the ring-type shaping element 15 thereof is formed of spaced segments 28 supported on pillars 29 fixed to a base section 30.
- Each conveyor roll 27 comprises, in accordance with the invention, rigid end sections or stub shafts 31 and 32 bridged by a resilient intermediate connecting member such as a coil spring 33.
- the lengths of the rigid end sections and flexible center section are proportioned such that when flat glass sheets are moved into bending position they will rest partly on the rigid sections and partly on the flexible section as illustrated in FIG. 2; whereas, when the glass sheet has been bent it will rest wholly on the flexible section as illustrated in FIGS. 3 and 5.
- the actual proportions depend upon the size and weight of the glass sheets and the degree of curvature desired.
- the rigid end stub shafts 31 and 32 are each journaled in individual pairs of spaced bearings 34 to maintain the same in axial alignment; said pairs of bearings being mounted on structural rails 35 along the sides of the bending apparatus 10.
- the shaft 32 outward of the related bearings 34 is provided with sprocket 36 driven by a chain belt 37, or it may be driven in any other desired manner.
- the coil spring 33 is fastened to the stub shafts 31 and 32 by fitting the opposite ends thereof over portions 38 of reduced diameter at the inner ends of said stub shafts.
- the reduced diameter of the end portions 38 is slightly larger than the inside diameter of the spring 33 to provide a pressed fit with the shaft end portions 38. Since each of the stub shafts is freely rotatable in its respecive bearings 34, this pressed-fit connection of the spring at each of its ends enables the stub shaft 32 with the sprocket 36 to rotatively drive the spring and thereby the oppositely disposed stub shaft 31.
- the outside diameter of the spring 33 is substantially the same as the diameter of the main portions of the stub shafts 31 and 32, and, by providing the roll assembly with a covering of a soft, non-abrasive, resilient material such as a tubular sleeve 39 a substantially continuous roll surface will be provided.
- the sleeve may be of asbestos or fibre glass cloth and secured by stretching it over the roll assembly and fastening the ends with pressure-sensitive tape 40 or by some other suitable means.
- the improvement consisting of a plurality of rotatable conveyor rolls associated with said lower mold member and positioned to support said heat softened glass sheet in said bending position and to receive the bent sheet from said lower mold member, each of said rolls comprising a pair of stub shafts disposed in aligned spaced end-to-end relation, a flexible connecting member bridging the space between said stub shafts and secured thereto, and a protective, resilient covering for'said flexible connecting member extending over the inner end portions of said stub shafts.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
- Rollers For Roller Conveyors For Transfer (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US61255667A | 1967-01-30 | 1967-01-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3485618A true US3485618A (en) | 1969-12-23 |
Family
ID=24453667
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US612556A Expired - Lifetime US3485618A (en) | 1967-01-30 | 1967-01-30 | Glass sheet conveying apparatus |
Country Status (9)
Country | Link |
---|---|
US (1) | US3485618A (xx) |
BE (1) | BE709855A (xx) |
DE (1) | DE1556612C3 (xx) |
ES (1) | ES349809A1 (xx) |
FR (1) | FR1555943A (xx) |
GB (1) | GB1182091A (xx) |
IE (1) | IE31928B1 (xx) |
LU (1) | LU55351A1 (xx) |
NL (1) | NL6801276A (xx) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4140486A (en) * | 1977-06-06 | 1979-02-20 | Nitschke Norman Carl | Spring end cap for conveyor rolls |
US4226608A (en) * | 1979-05-14 | 1980-10-07 | Shatterproof Glass Corporation | Method and apparatus for curving glass sheets |
US4305746A (en) * | 1980-05-01 | 1981-12-15 | Libbey-Owens-Ford Company | Method of and apparatus for bending glass sheets |
US4311509A (en) * | 1980-09-26 | 1982-01-19 | Ppg Industries, Inc. | Apparatus for conveying glass sheets |
US4376643A (en) * | 1981-09-28 | 1983-03-15 | Ppg Industries, Inc. | Apparatus for conveying glass sheets |
US4421482A (en) * | 1982-01-07 | 1983-12-20 | Mcmaster Ronald A | Conveyor roll for conveying heated glass sheets |
DE3310357A1 (de) * | 1983-03-22 | 1984-09-27 | Karl-Heinz Dipl.-Ing. 5107 Simmerath Dicks | Vorrichtung zum woelben und foerdern eines flaechengebildes |
US4488893A (en) * | 1983-08-08 | 1984-12-18 | Ppg Industries, Inc. | Movable alignment stops for glass sheet shaping apparatus |
US4934514A (en) * | 1987-07-10 | 1990-06-19 | Libbey-Owens-Ford Co. | Conveyor roll construction |
US4992088A (en) * | 1988-10-11 | 1991-02-12 | Societa Italiana Vetro - Siv - S.P.A. | Process and apparatus for the bending of flat sheets of glass |
US5046335A (en) * | 1987-06-22 | 1991-09-10 | Gunther Riba | Tunnel finisher with air rollers |
US20070125304A1 (en) * | 2005-12-01 | 2007-06-07 | Cardinal Cg Company | Transport rollers |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008022689A1 (de) * | 2008-05-07 | 2009-12-10 | Von Ardenne Anlagentechnik Gmbh | Transportwalze für die Vakuumbehandlung von Substraten |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US644039A (en) * | 1898-08-29 | 1900-02-20 | American Type Founders Co | Flexible pipe. |
US1592444A (en) * | 1924-03-22 | 1926-07-13 | Libbey Owens Sheet Glass Co | Drawing sheet glass |
US1863738A (en) * | 1928-10-20 | 1932-06-21 | Troy Laundry Machinery Co | Spring pad |
US2251714A (en) * | 1939-06-21 | 1941-08-05 | Onions John Henry | Roller bearing, particularly for aircraft shock absorbers |
US2348887A (en) * | 1938-06-02 | 1944-05-16 | Libbey Owens Ford Glass Co | Method of bending glass sheets |
US2960753A (en) * | 1955-01-13 | 1960-11-22 | Mount Hope Machinery Ltd | Sheet-engaging rolls |
US2960749A (en) * | 1958-08-20 | 1960-11-22 | Mount Hope Machinery Ltd | Expanding and contracting rolls |
US3265484A (en) * | 1962-12-03 | 1966-08-09 | Libbey Owens Ford Glass Co | Method and apparatus for press bending and tempering glass sheets |
US3361552A (en) * | 1963-10-16 | 1968-01-02 | Libbey Owens Ford Glass Co | Method and apparatus for bending horizontally conveyed glass sheets between opposed shaping molds |
US3421875A (en) * | 1965-09-13 | 1969-01-14 | Libbey Owens Ford Glass Co | Apparatus for bending glass sheets |
-
1967
- 1967-01-30 US US612556A patent/US3485618A/en not_active Expired - Lifetime
-
1968
- 1968-01-22 IE IE88/68A patent/IE31928B1/xx unknown
- 1968-01-23 GB GB3464/68A patent/GB1182091A/en not_active Expired
- 1968-01-25 LU LU55351D patent/LU55351A1/xx unknown
- 1968-01-25 BE BE709855D patent/BE709855A/xx unknown
- 1968-01-26 ES ES349809A patent/ES349809A1/es not_active Expired
- 1968-01-29 FR FR1555943D patent/FR1555943A/fr not_active Expired
- 1968-01-29 NL NL6801276A patent/NL6801276A/xx unknown
- 1968-01-30 DE DE1556612A patent/DE1556612C3/de not_active Expired
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US644039A (en) * | 1898-08-29 | 1900-02-20 | American Type Founders Co | Flexible pipe. |
US1592444A (en) * | 1924-03-22 | 1926-07-13 | Libbey Owens Sheet Glass Co | Drawing sheet glass |
US1863738A (en) * | 1928-10-20 | 1932-06-21 | Troy Laundry Machinery Co | Spring pad |
US2348887A (en) * | 1938-06-02 | 1944-05-16 | Libbey Owens Ford Glass Co | Method of bending glass sheets |
US2251714A (en) * | 1939-06-21 | 1941-08-05 | Onions John Henry | Roller bearing, particularly for aircraft shock absorbers |
US2960753A (en) * | 1955-01-13 | 1960-11-22 | Mount Hope Machinery Ltd | Sheet-engaging rolls |
US2960749A (en) * | 1958-08-20 | 1960-11-22 | Mount Hope Machinery Ltd | Expanding and contracting rolls |
US3265484A (en) * | 1962-12-03 | 1966-08-09 | Libbey Owens Ford Glass Co | Method and apparatus for press bending and tempering glass sheets |
US3361552A (en) * | 1963-10-16 | 1968-01-02 | Libbey Owens Ford Glass Co | Method and apparatus for bending horizontally conveyed glass sheets between opposed shaping molds |
US3421875A (en) * | 1965-09-13 | 1969-01-14 | Libbey Owens Ford Glass Co | Apparatus for bending glass sheets |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4140486A (en) * | 1977-06-06 | 1979-02-20 | Nitschke Norman Carl | Spring end cap for conveyor rolls |
US4226608A (en) * | 1979-05-14 | 1980-10-07 | Shatterproof Glass Corporation | Method and apparatus for curving glass sheets |
US4305746A (en) * | 1980-05-01 | 1981-12-15 | Libbey-Owens-Ford Company | Method of and apparatus for bending glass sheets |
US4311509A (en) * | 1980-09-26 | 1982-01-19 | Ppg Industries, Inc. | Apparatus for conveying glass sheets |
US4376643A (en) * | 1981-09-28 | 1983-03-15 | Ppg Industries, Inc. | Apparatus for conveying glass sheets |
US4421482A (en) * | 1982-01-07 | 1983-12-20 | Mcmaster Ronald A | Conveyor roll for conveying heated glass sheets |
DE3310357A1 (de) * | 1983-03-22 | 1984-09-27 | Karl-Heinz Dipl.-Ing. 5107 Simmerath Dicks | Vorrichtung zum woelben und foerdern eines flaechengebildes |
US4488893A (en) * | 1983-08-08 | 1984-12-18 | Ppg Industries, Inc. | Movable alignment stops for glass sheet shaping apparatus |
US5046335A (en) * | 1987-06-22 | 1991-09-10 | Gunther Riba | Tunnel finisher with air rollers |
US4934514A (en) * | 1987-07-10 | 1990-06-19 | Libbey-Owens-Ford Co. | Conveyor roll construction |
US4992088A (en) * | 1988-10-11 | 1991-02-12 | Societa Italiana Vetro - Siv - S.P.A. | Process and apparatus for the bending of flat sheets of glass |
US20070125304A1 (en) * | 2005-12-01 | 2007-06-07 | Cardinal Cg Company | Transport rollers |
Also Published As
Publication number | Publication date |
---|---|
BE709855A (xx) | 1968-07-25 |
NL6801276A (xx) | 1968-07-31 |
LU55351A1 (xx) | 1968-04-09 |
DE1556612B2 (de) | 1978-09-21 |
FR1555943A (xx) | 1969-01-31 |
IE31928B1 (en) | 1973-02-21 |
IE31928L (en) | 1968-07-30 |
DE1556612C3 (de) | 1979-05-17 |
DE1556612A1 (de) | 1970-02-19 |
GB1182091A (en) | 1970-02-25 |
ES349809A1 (es) | 1969-04-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: LOF GLASS, INC.,OHIO Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LIBBEY-OWENS-FORD COMPANY AN OH. CORP.;REEL/FRAME:004687/0980 Effective date: 19860320 Owner name: LOF GLASS, INC., 811 MADISON AVE., TOLEDO, OH 4369 Free format text: ASSIGNMENT OF ASSIGNORS INTEREST. SUBJECT TO CONDITION RECITED.;ASSIGNOR:LIBBEY-OWENS-FORD COMPANY AN OH. CORP.;REEL/FRAME:004687/0980 Effective date: 19860320 |