US3485618A - Glass sheet conveying apparatus - Google Patents

Glass sheet conveying apparatus Download PDF

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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
Application number
US612556A
Other languages
English (en)
Inventor
George F Ritter Jr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pilkington North America Inc
Original Assignee
Libbey Owens Ford Glass Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Libbey Owens Ford Glass Co filed Critical Libbey Owens Ford Glass Co
Application granted granted Critical
Publication of US3485618A publication Critical patent/US3485618A/en
Assigned to LOF GLASS, INC. reassignment LOF GLASS, INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: LIBBEY-OWENS-FORD COMPANY AN OH. CORP.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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)
US612556A 1967-01-30 1967-01-30 Glass sheet conveying apparatus Expired - Lifetime US3485618A (en)

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 (de)
BE (1) BE709855A (de)
DE (1) DE1556612C3 (de)
ES (1) ES349809A1 (de)
FR (1) FR1555943A (de)
GB (1) GB1182091A (de)
IE (1) IE31928B1 (de)
LU (1) LU55351A1 (de)
NL (1) NL6801276A (de)

Cited By (12)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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
US2960749A (en) * 1958-08-20 1960-11-22 Mount Hope Machinery Ltd Expanding and contracting rolls
US2960753A (en) * 1955-01-13 1960-11-22 Mount Hope Machinery Ltd Sheet-engaging 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

Patent Citations (10)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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
IE31928L (en) 1968-07-30
DE1556612A1 (de) 1970-02-19
GB1182091A (en) 1970-02-25
FR1555943A (de) 1969-01-31
IE31928B1 (en) 1973-02-21
DE1556612C3 (de) 1979-05-17
BE709855A (de) 1968-07-25
ES349809A1 (es) 1969-04-01
LU55351A1 (de) 1968-04-09
NL6801276A (de) 1968-07-31
DE1556612B2 (de) 1978-09-21

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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