US3703880A - Spray coating apparatus - Google Patents

Spray coating apparatus Download PDF

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Publication number
US3703880A
US3703880A US35030A US3703880DA US3703880A US 3703880 A US3703880 A US 3703880A US 35030 A US35030 A US 35030A US 3703880D A US3703880D A US 3703880DA US 3703880 A US3703880 A US 3703880A
Authority
US
United States
Prior art keywords
arm
depositing
attached
nozzle
spray
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
US35030A
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English (en)
Inventor
David M Wampler
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 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 Co filed Critical Libbey Owens Ford Co
Application granted granted Critical
Publication of US3703880A publication Critical patent/US3703880A/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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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/04—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
    • B05B13/0463—Installation or apparatus for applying liquid or other fluent material to moving work of indefinite length
    • B05B13/0468—Installation or apparatus for applying liquid or other fluent material to moving work of indefinite length with reciprocating or oscillating spray heads
    • B05B13/0473—Installation or apparatus for applying liquid or other fluent material to moving work of indefinite length with reciprocating or oscillating spray heads with spray heads reciprocating along a straight line

Definitions

  • ABSTRACT Apparatus for spraying a uniform layer of parting 21 Appl. No.: 35,030
  • a composite spray arm oscillates verticall point abo blanks ar y about a pivot ve a continuous conveyor upon which the e advanced while horizontally disposed, and has a central telescoping section adapted to render the path of the lower end thereof substantially linear.
  • a spray nozzle fixed to a member pivotall the lower end of the spray arm is adap 8 O0 7M7 HHH 9 9 353 202 14 2 m3 m3 2 u d .1 m M M C 2 mm m l.
  • a TTORNE YS SPRAY COATING APPARATUS BACKGROUND OF THE INVENTION 1.
  • the present invention relates broadly to the application of a uniform coating to a moving surface, and more particularly to an apparatus for spraying a liquid uniformly onto the surface of flat glass sheets.
  • the parting material is one which will both prevent any adhesion of adjacent surfaces and withstand the temperatures associated with the bending operation.
  • One such material commonly used is a suspension of sodium sulfate.
  • the suspension of parting material is normally applied by a spraying apparatus repeatedly traversing across and above a conveyor on which the sheets are simultaneously advanced.
  • the prior art practice has been to mount a nozzle spraying device rigidly at the lower end of a pivoting member which, in operation, swings back and forth in a substantially vertical plane making repeated arcuate passes across the conveyor.
  • This apparatus has not proved entirely satisfactory, however, in that during the course of the arcuate path described by the nozzle, both the incident angle and the distance between the spray nozzle and the glass sheet change constantly. This results in application of a nonuniform layer of material across the width of the sheet.
  • the present invention contemplates an improved spraying apparatus which allows the application of a layer of substantially uniform thickness across the width of the glass sheet.
  • An oscillating arm pivoted to swing in a substantially vertical plane telescopes to adjust the length thereof during each pass to maintain a substantially constant distance between the spraying means and the horizontal conveyor.
  • a spraying nozzle is fixed to a member pivotally mounted at the lower end of the arm and provided with a connecting rod which pivots the member in conjunction with the swinging of the arm to keep the axis of the spray nozzle substantially vertical as it sweeps across the conveyor.
  • Another object of the present invention is to provide a swingably mounted spray apparatus which applies a layer of substantially uniform thickness to a surface perpendicular to its plane of oscillation.
  • Yet another object of the invention is to minimize the amount of material expended in applying a protective coating of parting material to glass sheets for preventing adhesion of the adjacent surfaces of mated pairs thereof in subsequent bending operations.
  • Still another object is to provide a swingably mounted oscillating spray apparatus which maintains a substantially constant distance and angle between the spraying means and the object being coated.
  • FIG. 5 is an enlarged fragmentary front elevational view of the apparatus of FIG. 1 illustrating in broken lines various positions of the arm and spray nozzle.
  • FIGS. 1 and 2 there is shown generally at 10 a horizontal conveyor, nominally divided into three sections, namely an entry section 11, a spray section 12 and an exit section 13.
  • a spray booth 14 enclosing the conveyor section 12 is shown partially cut away exposing a structural frame 15 supporting the spraying apparatus of the invention shown generally at 16.
  • the entry conveyor section 11 may be a conventional endless belt conveyor including a frame having spaced side rails 17 and end rails 18 supported on legs 19 resting on bases 20. Endless belts 21 span the length of the conveyor section, encompassing end rolls 22 and 23, and are supported therebetween on slats 24 carried by the end rails 18. The rolls 22 and 23 are carried on shafts 25 and 26, respectively, suitably journaled in bearings at 27.
  • the exit section 13 has a frame with spaced side and end rails 28 and 29, respectively, supported by legs 30 resting on bases 31. End rolls 32 and 33 are carried by shafts 34 and 35, respectively, joumaled in bearings 36 and, with slats 37, are encircled by belts 38.
  • the center or spray section 12 has a frame structure including parallel, spaced side and end rails 39 and 40, respectively, supported by legs 41 resting on bases 42.
  • a series of spaced, driven joumaled shafts 43 span the side rails 39 and have a plurality of spaced, narrow collars 44, which may be made of rubber or similar resilient material, mounted in fixed positions thereon.
  • flat glass blanks 45 are advanced in the general left-to-right direction as the conveyor system is driven by conventional drive means.
  • a motor 46 through a drive system 47 (which may be a conventional chain drive) rotates the roll 22 and, through the resulting motion of the belts 21, drives the roll 23.
  • the roll 23 in turn, is further connected to rotate a first drive shaft 48 in spray section 12, as by means of a chain drive at 49.
  • a second drive shaft 50 in spray section 12 along with all of the spaced shafts 43 except the two end shafts of the series are driven in response to the rotation of the first drive shaft 48, through another conventional chain drive 51.
  • the remaining shaft at each extreme of the series of spaced shafts 43 may then be driven in a similar manner from the adjacent intermediate shaft as by drive means 52 and 53.
  • a final drive means 54 similar to those employed elsewhere in the system rotates the initial end roll 32 of the exit section 13 (and the end roll 33 through the resulting motion of the belts 38) in response to the rotation of the drive shaft 50.
  • the individual segments of the conveyor system 10 may be made to operate in unison from a single motor.
  • the flat glass blanks 45 are placed on the entry section 11 and move continuously through the spray section 12 and along the exit section 13.
  • the glass blanks are in continual horizontal motion throughout the spraying operation.
  • the support structure includes legs 55 mounted on bases 55a and connected by conventional means with side horizontal members 56, top cross supports 57, lower cross supports 58 and diagonal braces 59 and 60.
  • the spray arm of the invention swingably depends from the structure 15 supported by a stub shaft 62 joumaled in a pair of spaced bearings 63 supported, in turn, on a base 64 (FIGS. 3 and 5).
  • the stub shaft extends through a sleeve 65 in the spray arm to which it is fixed as by keying at 66 (FIG. 4).
  • the spray arm itself is of a composite nature having segmented upper and lower sections 67 and 68 with a central, tubular, telescoping section 69 therebetween.
  • the upper section 67 has a lower segment 70, which may be tubular, slidably mounted in bushings 71 spaced within the section 69 (indicated by lines 71a).
  • the lower section 68 includes an upper segment or element 72, which also may be tubular, threadably attached to the section 69 and a lower segment or element 73 to which a mounting plate 74 (FIG. 5) is swingably secured at 75.
  • a conventional drive mechanism is-mounted on the structure 15 and employed to oscillate the spray arm 61 on the stub shaft 62.
  • the drive mechanism may include a motor 76 connected by means of a belt drive 77 with a gear reducer 78 of a reduction ratio compatible with the desired speed at the output shaft 79 thereof.
  • the rotational motion of the output shaft 79 is converted into reciprocal motion, and this reciprocal motion is imparted to the spray arm 61, through a crank arm 80 and connecting rod 81 pivotally attached at the upper end 82 thereof.
  • a plurality of attachment holes 83 located along the length of the crank arm 80 allows the length of the stroke of the spray arm 61 to be adjusted as required by simply changing the point of attachment ofthe rod 81 to the crank arm 80.
  • the application by a conventional nozzle spray system of a coating of uniform thickness requires that the spray nozzle remain substantially equidistant from the target with its axis disposed at a substantially constant angle therewith during such application.
  • the apparatus of the invention contemplates a spraying system which encompasses both of these requirements.
  • the distance-controlling portion of the invention which maintains a substantially constant vertical interval between a spray nozzle 84 fixed rigidly to the pivotal plate 74, and the blanks 45 passing .therebeneath, as best shown in FIGS. 3 and 5, includes a first horizontal shaft 85 rigidly fixed to the lower cross supports 58 of frame 15 and a second horizontal shaft 86 directly below the pivot shaft 62 secured to the telescoping member 69 of the spray arm 61.
  • a connecting rod 87 linking the shafts 85 and 86 is joumaled thereon as by sleeves 88.
  • the rod 87 also oscillates, causing the member 69 to telescope in a manner which extends the arm as it moves from the center to the outer extremes of the swing and, conversely, retracts the arm as it approaches the center.
  • the length of the rod 87 is such that the lineal, telescoping movement of the member 69 just compensates for the vertical displacement of the arcuate swing of a comparable rigid arm.
  • a second pair of rods 89 and 90 maintains the axis of the spray nozzle in a substantially vertical position throughout the swing of the arm 61.
  • the rod 89 is rigidly fixed, as by a weld, to the connecting rod 87 so that the angle therebetween remains constant.
  • the rod 90 is pivotally connected at 91 to the rod 89 and at 92 to the nozzle mounting plate 74.
  • the rods 89 and 90 cooperate to pivot the mounting plate 74 about the pivot point 75 relative to the lower spray arm segment 73, the plate 74 thereby maintaining a substantially horizontal line of travel and the axis of the nozzle 84 remaining substantially vertically disposed.
  • the spraying mechanism of the spray nozzle 84 is operated in response to signals from limit switches 93 and 94 (FIG. 3) by compressed air from lines 95 and 96 as will be hereinafter described.
  • the limit switches 93 and 94 are attached to the framework of the conveyor section 12 so as to be depressed by the glass blanks 45 as they travel thereover.
  • the limit switch 93 is located a short distance ahead of the nozzle 84 and the limit switch 94 a short distance past the nozzle 84, in reference to the general left-to-right travel of the glass blanks 45.
  • an essentially uniform spray pattern is maintained at the level of the blanks 45, thereby coating their entire surface with a uniform layer of parting material. Also, consumption of the sprayed solution is reduced significantly as it is no longer necessary to compensate for possible underspraying at the side edges.
  • the improvement comprising an extensible arm pivotally mounted above said path for movement in a plane transversely of said path, said extensible arm including at least two sections axially movable relative to each other for adjusting the length of said arm, means carried by said arm at the lower end thereof for depositing said coating material on said sheets as they pass therebeneath, means swinging said arm back and forth about said pivotal mounting whereby said means for depositing said coating material swings with said arm and repeatedly traverses across said advancing sheets, and means adjusting the length of said extensible arm in response to said back and forth movement whereby said means carried by said arm for depositing said coating material maintains a substantially uniform distance from said sheets as it moves thereacross, said means adjusting the length of said arm comprising a connecting rod having a stationary end independently attached to the support structure below the picot point of said arm and a traveling end attached to said extensible arm.
  • said means swinging said arm includes a drive means supplying rotational motion, a crank arm attached thereto, and a connecting rod pivotally attached to said crank arm and spray arm transforming said rotational motion into reciprocal motion pivotally oscillating said spray arm
  • said material depositing means includes a spray nozzle fixed to a mounting member attached to the lower end of said arm and adapted to pivot in a vertical plane and a connecting rod attached to said mounting member and adapted to pivot said mounting member in conjunction with said swing to maintain an essentially constant angle of incidence between the axis of said nozzle and said sheets as said nozzle traverses said conveyor.

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  • Spray Control Apparatus (AREA)
US35030A 1970-05-06 1970-05-06 Spray coating apparatus Expired - Lifetime US3703880A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US3503070A 1970-05-06 1970-05-06

Publications (1)

Publication Number Publication Date
US3703880A true US3703880A (en) 1972-11-28

Family

ID=21880192

Family Applications (1)

Application Number Title Priority Date Filing Date
US35030A Expired - Lifetime US3703880A (en) 1970-05-06 1970-05-06 Spray coating apparatus

Country Status (12)

Country Link
US (1) US3703880A (xx)
JP (1) JPS5231883B1 (xx)
BE (1) BE766689A (xx)
CA (1) CA939140A (xx)
DE (1) DE2123017C3 (xx)
FR (1) FR2088373B1 (xx)
GB (1) GB1310452A (xx)
IT (1) IT944669B (xx)
LU (1) LU63110A1 (xx)
NL (1) NL166630C (xx)
SE (1) SE384454B (xx)
ZA (1) ZA712817B (xx)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3812728A (en) * 1973-05-29 1974-05-28 Ransburg Corp Spraying machine
DE2601030A1 (de) * 1975-03-26 1976-10-14 Vagnone & Boeri Vorrichtung zum auftragen von straengen einer kittmasse oder eines aehnlichen teigigen materials auf tafeln
US4125035A (en) * 1977-02-09 1978-11-14 Dooley Richard Anthony Control mechanism for spray guns and the like
DE2827891A1 (de) * 1978-06-24 1980-01-03 Yasui Sangyo Co Ltd Vorrichtung zum verspruehen von fliessmittel
US4864965A (en) * 1987-01-26 1989-09-12 Taikisha Ltd. Automatic painting apparatus
EP0387549A1 (de) * 1989-02-21 1990-09-19 WADEPHUL, Jost Vorrichtung zum Beschichten von Werkstücken
US5103761A (en) * 1988-05-26 1992-04-14 Honda Giken Kogyo Kabushiki Kaisha Coating apparatus
US5452859A (en) * 1994-01-21 1995-09-26 Flaxman; Michael M. Vehicle washing apparatus
EP0715898A1 (en) * 1994-12-09 1996-06-12 OFFICINE SMAC S.p.A. A machine for painting ceramic tiles
US6190455B1 (en) * 1998-01-27 2001-02-20 Nisshin Flour Milling Co., Ltd. Finely-divided powder spray apparatus
US20090194021A1 (en) * 2008-02-01 2009-08-06 Scott Snodgrass Dispenser for a coating apparatus having reduced sag

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5461295U (xx) * 1977-10-06 1979-04-27
JPS5461294U (xx) * 1977-10-06 1979-04-27
JPS5461296U (xx) * 1977-10-06 1979-04-27

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1831535A (en) * 1929-07-25 1931-11-10 Triplex Safety Glass Company O Apparatus for spraying glass, etc.
US1835402A (en) * 1930-01-21 1931-12-08 Triplex Safety Glass Co Apparatus for spraying glass, etc.
US2369424A (en) * 1943-05-03 1945-02-13 George A Barlow Automatic spray machine
US2561198A (en) * 1944-03-23 1951-07-17 A C Lawrence Leather Company Spraying apparatus for spraying moving plates
FR1144441A (fr) * 1955-04-29 1957-10-14 An I T E S Soc Installation de tuyères multiples de pulvérisation, pour le vernissage ou la pigmentation automatique de matériaux différents
US2925801A (en) * 1959-01-21 1960-02-23 Owens Illinois Glass Co Apparatus for applying surface coatings to glassware
US3192796A (en) * 1960-02-12 1965-07-06 Vilbiss Co Memory system for spray coating machines or the like

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1454055A (fr) * 1965-08-21 1966-07-22 Machine à peindre

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1831535A (en) * 1929-07-25 1931-11-10 Triplex Safety Glass Company O Apparatus for spraying glass, etc.
US1835402A (en) * 1930-01-21 1931-12-08 Triplex Safety Glass Co Apparatus for spraying glass, etc.
US2369424A (en) * 1943-05-03 1945-02-13 George A Barlow Automatic spray machine
US2561198A (en) * 1944-03-23 1951-07-17 A C Lawrence Leather Company Spraying apparatus for spraying moving plates
FR1144441A (fr) * 1955-04-29 1957-10-14 An I T E S Soc Installation de tuyères multiples de pulvérisation, pour le vernissage ou la pigmentation automatique de matériaux différents
US2925801A (en) * 1959-01-21 1960-02-23 Owens Illinois Glass Co Apparatus for applying surface coatings to glassware
US3192796A (en) * 1960-02-12 1965-07-06 Vilbiss Co Memory system for spray coating machines or the like

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3812728A (en) * 1973-05-29 1974-05-28 Ransburg Corp Spraying machine
DE2601030A1 (de) * 1975-03-26 1976-10-14 Vagnone & Boeri Vorrichtung zum auftragen von straengen einer kittmasse oder eines aehnlichen teigigen materials auf tafeln
US4125035A (en) * 1977-02-09 1978-11-14 Dooley Richard Anthony Control mechanism for spray guns and the like
DE2827891A1 (de) * 1978-06-24 1980-01-03 Yasui Sangyo Co Ltd Vorrichtung zum verspruehen von fliessmittel
US4864965A (en) * 1987-01-26 1989-09-12 Taikisha Ltd. Automatic painting apparatus
US5103761A (en) * 1988-05-26 1992-04-14 Honda Giken Kogyo Kabushiki Kaisha Coating apparatus
EP0387549A1 (de) * 1989-02-21 1990-09-19 WADEPHUL, Jost Vorrichtung zum Beschichten von Werkstücken
US5452859A (en) * 1994-01-21 1995-09-26 Flaxman; Michael M. Vehicle washing apparatus
EP0715898A1 (en) * 1994-12-09 1996-06-12 OFFICINE SMAC S.p.A. A machine for painting ceramic tiles
US6190455B1 (en) * 1998-01-27 2001-02-20 Nisshin Flour Milling Co., Ltd. Finely-divided powder spray apparatus
US20090194021A1 (en) * 2008-02-01 2009-08-06 Scott Snodgrass Dispenser for a coating apparatus having reduced sag

Also Published As

Publication number Publication date
JPS5231883B1 (xx) 1977-08-18
ZA712817B (en) 1972-01-26
FR2088373B1 (xx) 1975-07-04
LU63110A1 (xx) 1971-08-31
NL7106135A (xx) 1971-11-09
NL166630B (nl) 1981-04-15
DE2123017A1 (de) 1971-11-25
FR2088373A1 (xx) 1972-01-07
IT944669B (it) 1973-04-20
DE2123017C3 (de) 1981-04-02
BE766689A (fr) 1971-10-01
GB1310452A (en) 1973-03-21
NL166630C (nl) 1981-09-15
CA939140A (en) 1974-01-01
SE384454B (sv) 1976-05-10
DE2123017B2 (de) 1980-07-10

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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