US3724415A - Controlling spray guns - Google Patents

Controlling spray guns Download PDF

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Publication number
US3724415A
US3724415A US00067868A US3724415DA US3724415A US 3724415 A US3724415 A US 3724415A US 00067868 A US00067868 A US 00067868A US 3724415D A US3724415D A US 3724415DA US 3724415 A US3724415 A US 3724415A
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United States
Prior art keywords
profile
cam
adjusting means
path
channel
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
US00067868A
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English (en)
Inventor
H Knight
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.)
Haden Drysys International Ltd
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Haden Drysys International Ltd
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Publication date
Application filed by Haden Drysys International Ltd filed Critical Haden Drysys International Ltd
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Classifications

    • 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
    • B05B13/0405—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 with reciprocating or oscillating spray heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
    • B05B12/12—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to conditions of ambient medium or target, e.g. humidity, temperature position or movement of the target relative to the spray apparatus
    • B05B12/122—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to conditions of ambient medium or target, e.g. humidity, temperature position or movement of the target relative to the spray apparatus responsive to presence or shape of target
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/06—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using cams, discs, rods, drums or the like
    • G05B19/066—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using cams, discs, rods, drums or the like for delivering "step function", a slope function or a continuous function
    • 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
    • B05B13/0447—Installation or apparatus for applying liquid or other fluent material to conveyed separate articles
    • B05B13/0452—Installation or apparatus for applying liquid or other fluent material to conveyed separate articles the objects being vehicle components, e.g. vehicle bodies

Definitions

  • the present invention relies upon the conception that, because the distance from the contour of a body to the middle of a cord is not as a rule critical, the contour of a body cam can be split up into separate chords joined together by generous curves.
  • an apparatus for coating surfaces of a succession of articles of different shapes and sizes by a spray gun reciprocable along a path in a first plane during movement of the surfaces past the gun along a path in a second plane at right angles to said first plane comprising sensing devices located along the path of the articles and operable to sense the shape and size of the article, a variable profile cam operable to control the movements of the gun in said first plane, cam profile adjusting means, and control means connected with said sensing devices and said cam profile adjusting means and operable to actuate the cam profile adjusting means to adjust the profile of the cam according to the form of the surface to be sprayed thereby during reciprocation of the spray gun to maintain the position of emission of liquid from the spray gun substantially at a predetermined distance from the surface being sprayed.
  • FIG. 1 diagrammatically shows a side view of an automobile body, a spray coating apparatus and elements of a body form detecting device
  • FIG. 2 shows a side view of an adjustable cam
  • FIG. 3 shows an enlarged cross section on the line 3-3 of FIG. 2,
  • FIGS. 4 and 5 show side views of a further embodiment of adjustable cam in different operating positions thereof
  • FIG. 6 shows in block schematic form a circuit arrangement and adjusting means for adjusting the shape ofa cam as shown in FIG. 3, and
  • FIGS. 7, 8 and 9 show diagrammatic representations of a longitudinal section through a spray gun guiding arrangement in different operating positions thereof.
  • FIG. 1 there is shown an automobile body 1 supported by a hanger or truck (not shown).
  • the arrangement is such that bodies of different shape and size following consecutively may be handled.
  • the spraying apparatus includes a structure having two vertically disposed side units 2, only one olwhich is shown, spaced apart one on either side of the path of travel of the bodies, and a horizontally disposed unit 3, above the path of travel of the bodies, for side spray guns 4 and top spray guns 5.
  • the spray guns 4 and 5 are reciprocable along their units in first planes at right angles to a plane along which move the body surfaces which the spray guns are arranged to coat.
  • the length of traverse of the side spray guns 4 is indicated by a slot 8 in the casing of the vertical unit 2.
  • a plurality of photoelectric devices 9, 10, 11, 12 and 13, positioned local to thespray gun units, or in prior positions, that is before the spray booth in which spray,- ing is effected, are arranged to detect the presence of a body or a particular part of a body and to provide signals to a programming arrangement which controls the extent both of the movement of the spray guns along their respective units and the periods of time during which spraying takes place, as described in US. Pat. specification No. 3,255,037, Knight et al.
  • FIG. 2 there will now be described a variable profile cam in its simplest form which is particularly suitable for use with apparatus of the kind described with reference to FIG. 1 in controlling the movement of spray guns so that they may follow the profiles of different bodies with the position of emission of liquid therefrom maintained at a substantially predetermined distance from the surface being sprayed.
  • a first cam member 15 formed from a U-section channel member having two straight portions 16 and 17 joined by a curved portion 18.
  • the upper end 20 of the member 15 is movable by means of a piston rod 21 from a pneumatically operated double acting cylinder 22.
  • the lower end 23 of the member 15 is attached to a bracket 24 which is pivoted about a fixed pivot 25 so that the arm 15 can be rotated about the pivot 25 by the action of the cylinder 22 into either one of two positions, namely the position in which it is shown and the position indicated by the dotted line 15a.
  • a bracket 26 there is also pivoted about the pivot 25, by means of a bracket 26, a second cam member 27 formed as a straight member having a U-section channel.
  • the lower end of the member 27 is attached to the piston rod 28 of a double acting cylinder 30, which in turn is coupled to the piston of a double acting cylinder 31, whereby the cam member 27 may be moved by the action of the cylinders from the position shown into either of the positions indicated by the dotted lines 27a and 27b.
  • a cam profile-forming strip consisting of a flexible steel strip 32 which extends lengthwise of the channels 15, 27 and is maintained in tension by a coiled tension spring, indicated at 33.
  • the strip 32 provides a cam profile within the members 15 and 27 and continues as a curve between the ends of these members at the brackets 24 and 26.
  • first, second, and third cam members 40, 41 and 42 formed from straight lengths of U-section channels.
  • the second member 41 is coupled by arms 44 and 46 at its opposite ends to the ends of an arm 49 to form a unitary structure.
  • the arms 44, 46 extend in opposite directions at right angles to the second cam member 41.
  • the rocking arm 49 is pivoted about a fixed pivot point 50 and the opposite-ends of the rocking arm 49 carry pivots 45 and 48 about which brackets 43 and 47, attached to the ends of the first and third cam members 40 and 42 respectively, may pivot.
  • the second cam member 41 may be positioned by rotation of the rocking arm 49 about the pivot 50 either manually, by means of a pneumatically operated cylinder 51, or by any other rotatable means, acting on the rocking arm 49.
  • the unitary structure formed by the rocking arm 49, the arms 44 and 46 and the second cam member 41 may, in a modified embodiment, be moved vertically by arranging the pivot 50 in a slot and acting on the structure either by means of a remotely controlled pneumatically operated cylinder (not shown) or manually.
  • the end 52 of the third cam member 42 is connected to the piston rod of a cylinder 53 which in turn is coupled to the piston rod of a cylinder 54 and the end 55 of the first cam member 40 is connected to the piston rod of a cylinder 56.
  • the strip 57 is maintained under tension by two coiled tension springs 58 and 59 at its opposite ends.
  • FIG. 6 shows a schematic diagram illustrating the five photoelectric devices 9, 10, 11, 12 and 13 shown in FIG. 1 with their outputs applied to a number of inputs of a control arrangement 61.
  • the control arrangement includes, in effect, a translator which may be based, for example, upon a diode matrix providing outputs upon leads 62, 63, 64 and 65 according to the inputs and a predetermined key.
  • the outputs on the leads 63, 64, 65 and 62 operate solenoid valves 66, 67, 68 and 69, which control the double acting cylinders 22, 30, 31 and 51 respectively.
  • a code converter or translator in the control means 61 will provide signals on the leads 63 and 64 resulting in the operation of the cylinders 22 and 30. It is, of course, possible for a spraying programme to begin with one particular cam profile arrangement and for an additional photocell or other detector to be positioned to indicate that there is a change of profile before the programme has finished. In such a situation it is possible, by feeding the further information from the additional photocell to the control means to arrange that the code converter in the control means modifies its output and varies the cam profile accordingly.
  • provision for this change may be programmed into the control arrangement 61 according to a profile originally recognized by the photoelectric devices so that the change occurs after a given time interval from the beginning of spraying.
  • a further control signal may also be provided from the control arrangement 61 to operate a cylinder for positioning the pivot 50 vertically as mentioned above.
  • cylinders other well known positioning means, for example rack and pinion and ratchet and pawl mechanisms, may be used.
  • a code may be set up on the hanger or truck, not shown, carrying the body which can be read, for example, mechanically and the control means may be programmed to operate the cylinders accordingly.
  • the coded information may be read in the control arrangement 61 from a punched tape, which has been coded in sequence, in synchronism with the approach of a respective body to the spraying apparatus.
  • the coded information on the tape may be fed after reading directly to the adjusting means or it may be converted as required.
  • FIGS. 7, 8 and 9 there are shown diagrammatic representations of longitudinal sections through a spray gun guiding arrangement at different levels within the side unit 2.
  • the spray gun 4 is shown attached to and freely pivotablc upon an arm 70 which is slidingly arranged within guide bearings 71 and 72.
  • 'Ihe arm 70 is coupled via a U-shaped bracket 73 to a guide block 74 which runs on a rod 75.
  • the whole of the assembly forms a part of a carriage which is reciprocated vertically within the side unit 2.
  • an air cylinder 77 having a piston indicated at 78 and a piston rod 79 to which there is pinned a stop collar 81 and which carries, freely pivoted at its end, an arm 82 carrying a bracket 83 pivoted at 83a attached to the spray gun 4.
  • the arm 70 carries a roller 84 at its end opposite to that attached to the gun 4 and the roller 84 moves in the U-shaped channel section of the cam members previously described upon the cam track indicated diagrammatically at 85.
  • Apparatus for coating surfaces of a succession of articles of different shapes and sizes by a spray gun reciprocable along a path in a first plane during movement of the surfaces past the gun-along a path in a second plane at right angles to said first plane comprising sensing devices located along the path of the articles and operable to sense the shape and size of the articles, a cam formed by at least two profile-forming members supported for movement relative one to the other to vary the profile of the cam and to control the movements of the gun in said first plane, profile-forming member adjusting means, and control means connected with said sensing devices and said profile-forming member adjusting means and operable to actuate the profile-forming member adjusting means to vary the profile of the cam according to the form of the surface to be sprayed during reciprocation of the spray gun to maintain the position of emission of liquid from the spray gun substantially at a predetermined distance from the surface being sprayed.
  • the profile-forming members each include a U-section channel, and a cam profile-forming strip extending lengthwise of the bases of the U-section channels, said channels being pivoted one to another and movable about their pivots by the adjusting means to vary the profile formed by the strip and to effect curving of the strip between adjacent ends of the channels.
  • first and second profile-forming members each consisting of a U-section channel, and a cam profile-forming strip extending lengthwise of the bases of the U-section channels, the channel of the second member being straight along the length thereof and the channel of the first member having a straight portion terminating in a curved portion adjacent one end of the channel of the second member, the adjacent ends of the channels being secured to brackets pivotable about a fixed pivot and the ends of the channels remote from each other being connected to said adjusting means.
  • first, second, and third profile-forming members each consisting of a U-section channel, each said channel being straight along the length thereof, a cam profileforming strip extending lengthwise of the bases of the channels, arms secured to opposite ends of the channels of the second member and extending in opposite directions at right angles thereto, a rocking arm rockable about a pivot therefor, said rocking arm carrying pivots at the opposite ends thereof and having said arms pivoted on said pivots, and brackets secured to the ends of the channels of the first and third members adjacent the opposite ends of the channel of the second member, said brackets being pivoted one on each of the pivots carried by the rocking arm and the ends of the channel of the first and third members remote from the channel of the second member being connected to said adjusting means.
  • Apparatus according to claim 4 including further adjusting means for rocking the rocking arm about its pivot.
  • adjusting means includes fluid-operated cylinders having pistons connected to the pivotable parts of the cam structure.
  • adjusting means includes fluid-operated cylinders having pistons connected to the pivotable parts of the cam structure.
  • adjusting means includes fluid-operated cylinders having pistons connected to the pivotable parts of the cam structure.
  • adjusting means includes fluid-operated cylinders having pistons connected to the pivotable parts of the cam structure.
  • Apparatus for coating surfaces of a succession of articles of different shapes and sizes by a spray gun reciprocable along a first path in a first plane during movement of the surfaces past the gun along a path in a second plane at right angles to said first plane comprising in combination:
  • sensing means located along the path of the articles for sensing the size and shape of the articles
  • variable profile cam means disposed along said first path and engaged by said means for moving the spray gun for controlling in and out movements of the gun relative to said second plane as it is moved along said path in said first plane;
  • control means for varying the profile of said cam means in accord with the size and shape of the articlc sensed by said sensing means to maintain said spray gun substantially at a predetermined distance from the surface of an article being sprayed.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Spray Control Apparatus (AREA)
  • Transmission Devices (AREA)
US00067868A 1969-09-03 1970-08-28 Controlling spray guns Expired - Lifetime US3724415A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB43669/69A GB1260569A (en) 1969-09-03 1969-09-03 Apparatus for coating surfaces by means of a spray gun

Publications (1)

Publication Number Publication Date
US3724415A true US3724415A (en) 1973-04-03

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ID=10429787

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Application Number Title Priority Date Filing Date
US00067868A Expired - Lifetime US3724415A (en) 1969-09-03 1970-08-28 Controlling spray guns

Country Status (6)

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US (1) US3724415A (enrdf_load_stackoverflow)
JP (1) JPS501139B1 (enrdf_load_stackoverflow)
BE (1) BE755695A (enrdf_load_stackoverflow)
DE (1) DE2043788C3 (enrdf_load_stackoverflow)
FR (1) FR2060823A5 (enrdf_load_stackoverflow)
GB (1) GB1260569A (enrdf_load_stackoverflow)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3878812A (en) * 1972-11-16 1975-04-22 Takeuchi Tekko Kk Apparatus for applying wax to vehicles to be polished
US3895601A (en) * 1972-12-01 1975-07-22 Takeuchi Tekko Kk Apparatus for applying wax to the surfaces of vehicles
US4196023A (en) * 1974-03-25 1980-04-01 Carrier Drysys Limited Treating automobile bodies
US4205101A (en) * 1974-08-19 1980-05-27 Imperial Chemical Industries Limited Pretreatment process
EP0136616A1 (de) * 1983-09-21 1985-04-10 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Einrichtung zum Konservieren vn Hohlräumen
US4719932A (en) * 1985-05-21 1988-01-19 Pdq Manufacturing Inc. Automatic vehicle washing system
US4726388A (en) * 1984-07-13 1988-02-23 Swinehart Lonn L Automatic vehicle washing equipment
EP0308383A1 (en) * 1987-09-16 1989-03-22 Dinol International Aktiebolag Pivotable nozzle
EP0403804A1 (de) * 1989-06-19 1990-12-27 J. Wagner GmbH Einrichtung zum Innenbeschichten von Hohlräumen
US4982897A (en) * 1986-08-15 1991-01-08 Iwata Air Compressor Mfg. Co., Ltd. Spraying method and apparatus employed therefor
US5240745A (en) * 1986-04-01 1993-08-31 Honda Giken Kogyo Kabushiki Kaisha Method for uniformly painting an object with moving spray guns spaced a constant distance from the surface of the object
US20040115359A1 (en) * 2000-12-19 2004-06-17 Dominique Cebola Method for controlling a surface coating installation
US9956569B2 (en) 2016-06-08 2018-05-01 Toyota Motor Engineering & Manufacturing North America, Inc. Spray coating application system
CN113893979A (zh) * 2021-11-02 2022-01-07 深圳市索威尔科技开发有限公司 一种车辆自动喷涂方法及装置

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2725038A1 (de) * 1977-06-03 1978-12-14 Behr & Sohn Hermann Seitenspritzautomat
US4402459A (en) * 1980-09-22 1983-09-06 Berry Arnold R Spray gun reciprocating device
FR2520611A1 (fr) * 1982-02-02 1983-08-05 Prioux Alain Installation pour le massage aerodynamique de patients
JPH0434906U (enrdf_load_stackoverflow) * 1990-07-20 1992-03-24

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2321982A (en) * 1941-01-02 1943-06-15 Gen Motors Corp Paint spray machine
US2840037A (en) * 1954-04-02 1958-06-24 Howard V Schweitzer Mechanical movement for coating apparatus
US3255037A (en) * 1961-03-10 1966-06-07 Howard Vincent Schweitzer Method and apparatus for coating vehicle bodies
US3561398A (en) * 1969-06-19 1971-02-09 Programmed & Remote Syst Corp Spray painter
US3594211A (en) * 1966-10-20 1971-07-20 Ransburg Electro Coating Corp Automatic coating system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2321982A (en) * 1941-01-02 1943-06-15 Gen Motors Corp Paint spray machine
US2840037A (en) * 1954-04-02 1958-06-24 Howard V Schweitzer Mechanical movement for coating apparatus
US3255037A (en) * 1961-03-10 1966-06-07 Howard Vincent Schweitzer Method and apparatus for coating vehicle bodies
US3594211A (en) * 1966-10-20 1971-07-20 Ransburg Electro Coating Corp Automatic coating system
US3561398A (en) * 1969-06-19 1971-02-09 Programmed & Remote Syst Corp Spray painter

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3878812A (en) * 1972-11-16 1975-04-22 Takeuchi Tekko Kk Apparatus for applying wax to vehicles to be polished
US3895601A (en) * 1972-12-01 1975-07-22 Takeuchi Tekko Kk Apparatus for applying wax to the surfaces of vehicles
US4196023A (en) * 1974-03-25 1980-04-01 Carrier Drysys Limited Treating automobile bodies
US4205101A (en) * 1974-08-19 1980-05-27 Imperial Chemical Industries Limited Pretreatment process
EP0136616A1 (de) * 1983-09-21 1985-04-10 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Einrichtung zum Konservieren vn Hohlräumen
US4726388A (en) * 1984-07-13 1988-02-23 Swinehart Lonn L Automatic vehicle washing equipment
US4719932A (en) * 1985-05-21 1988-01-19 Pdq Manufacturing Inc. Automatic vehicle washing system
US5240745A (en) * 1986-04-01 1993-08-31 Honda Giken Kogyo Kabushiki Kaisha Method for uniformly painting an object with moving spray guns spaced a constant distance from the surface of the object
US4982897A (en) * 1986-08-15 1991-01-08 Iwata Air Compressor Mfg. Co., Ltd. Spraying method and apparatus employed therefor
EP0308383A1 (en) * 1987-09-16 1989-03-22 Dinol International Aktiebolag Pivotable nozzle
EP0403804A1 (de) * 1989-06-19 1990-12-27 J. Wagner GmbH Einrichtung zum Innenbeschichten von Hohlräumen
US20040115359A1 (en) * 2000-12-19 2004-06-17 Dominique Cebola Method for controlling a surface coating installation
US9956569B2 (en) 2016-06-08 2018-05-01 Toyota Motor Engineering & Manufacturing North America, Inc. Spray coating application system
CN113893979A (zh) * 2021-11-02 2022-01-07 深圳市索威尔科技开发有限公司 一种车辆自动喷涂方法及装置

Also Published As

Publication number Publication date
FR2060823A5 (enrdf_load_stackoverflow) 1971-06-18
BE755695A (fr) 1971-03-03
DE2043788C3 (de) 1979-05-23
DE2043788A1 (de) 1971-04-08
DE2043788B2 (de) 1978-09-28
GB1260569A (en) 1972-01-19
JPS501139B1 (enrdf_load_stackoverflow) 1975-01-16

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