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US2083633A - Paint spraying machine - Google Patents

Paint spraying machine Download PDF

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Publication number
US2083633A
US2083633A US14979A US1497935A US2083633A US 2083633 A US2083633 A US 2083633A US 14979 A US14979 A US 14979A US 1497935 A US1497935 A US 1497935A US 2083633 A US2083633 A US 2083633A
Authority
US
United States
Prior art keywords
gun
carriage
roof
movement
paint
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
US14979A
Other languages
English (en)
Inventor
Tracy F Brackett
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.)
Motors Liquidation Co
Original Assignee
General Motors Corp
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 General Motors Corp filed Critical General Motors Corp
Priority to US14979A priority Critical patent/US2083633A/en
Priority to DEG92627D priority patent/DE658334C/de
Application granted granted Critical
Publication of US2083633A publication Critical patent/US2083633A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B05B13/0463—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
    • 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 conveyed articles being vehicle bodies

Definitions

  • This invention relates to the art of surface finishing and particularly to a, machine for applying a uniform coating of paint or'other liquid finish at a rapid rate over a large surface area.
  • a conveyor line moving continuously carries an endless succession of bodies upon which the several operations of cleaning, sanding, painting, drying, polishing,
  • Every body receives several paint coats and each coat is sprayed on'with a hand manipulated gun.
  • various precautionss are taken, including the installation of extensive ventilation systems to prevent inhalation o'f' -the mist and fumes.
  • metal roof coverings are 'sprayed with the ordinary equipment the workmans face necessarily is above and sometimes directly over the roof surface in the path of the rising fumes, which is much-to his discomfort -even though he wears a mask. To avoid that unpleasant job and improve conditions under which spray painters work is one of the aims of the present invention.
  • a further object of the invention is to provide an overhead carrier, under control of an operator positioned to one side and out of the way of the harmful effects of the spraying operation, for
  • Another object is to provide a machine wherein the discharge nozzle of the gun will be maintained at a proper distance from and on an axis normal to the surface being sprayed, having in mind that the surface may be curved or other 40 than fiat, and wherein the discharge is controlled manually by the operator at all times and automatically by the machine according to given positions of the gun in its range of reciprocatory travel.
  • a further object of the invention is to provide a variable speed drive by which rate of reciprocation of the gun holder may be regulated in accordance with the speed of the movingconveyor line.
  • Figure 1 is an elevation and Figure 2 a top plan 1935, Serial No. 14,919
  • Figures 3 and 4 show on a larger scale in front elevation and in side elevation, respectively, the gun carrier;
  • Figure 5 is a section taken on line 5-5 of Figure 3;
  • Figure 6 is a view looking in the direction of the arrows on line 6-'-6 of Figure 4 and illustrates the trigger valve operating mechanism;
  • Figure '7 is a'detail section on line 1-1 of Figure 6 and shows the roller mounting of a carriage on its supporting track, and
  • Figure 8 is a top plan view partly in section of the traveling carriage and the mechanism for reciprocating the same.
  • the numeral i indicates a track for a dolly 2 which is connected with a conveyor chain 3.
  • the dolly supports and carries the automobile body 4 shown in outline, the curved roof of which is to1be coated as the body moves on the conveyor line.
  • an ordinary spray gun 5 is carried by an overhead structure for swift movement back and forth across the top. Best results are obtained when the discharge nozzle of the gun is maintained at form distance from the surface being sprayed and additionally when the axis of discharge is substantially normal or at right angles to the surface. The mechanism for accomplishing these results willbe described in more detail hereinafter.
  • any suitable supporting structure may be employed.
  • the main frame 6 is carried at opposite ends by dependent suspension bars I from overhead beams 8, the opposite ends of which rest on adjustable posts extending upwardly from the floor.
  • Each post is shown as comprising a pair of telescopic tubes 9 and I0 with the outer post l0 having at its upper end a screw threaded sleeve ll engaging a collar [2 clamped or otherwise fixed to the inner tube machine in spraying 9.
  • Adjustment of the sleeve ll controls the ex-' and the range of tension of the telescopic tubes adjustment may be increased further by shifting the fixed position of the collar I! on the inner tube 9.
  • the height of the supporting frame may be altered for an initial adjustment of the spaced relation between the discharge nozzle of the gun and the roof surface.
  • the pulley ii is adjustably mounted for movement substantially a given unicarriage use may be relative to the pulley l4 and the spring loaded rod l6 connected with the mounting plate for duction gearing housed within a casing l8 from a V-grooved pulley I9, in turn driven through a V-belt 20 from an expansible pulley 2
  • may be of any of the well known types on the market and comprises a pairof cooperating discsyieldingly held together by spring pressure and provided with inclined belt engaging faces which may be spread apart against the force of the spring by an increase in belt tension.
  • the belt moving in or out of the groove varies the diameter of the pulley driving surfaces and changes the rate of speed.
  • the motor 22 is slidably supported on one end of the main frame 6 and engaged by a hand operated screw shaft 24 whereby variations in speed of carriage reciprocation may be easily and quickly effected to suit conveyor line speedf
  • speed of the conveyor line is set according to production schedules and that the adjustment of carriage reciprocation in relation to conveyor travel eliminates the need for frequent adjustments of the feed of the sprayer gun and insures proper overlap of the paint sprayed I on succeeding strokes of the carriage.
  • the gun used is of the conventional type and has leading-to it flexible hose conduits for air under pressure and paint supply. Its valve is controlled by a trigger lever shown at 25 and .it is proposed to operate this valve so that the flow of paint is automatically cut off at the end of each stroke and again turned on at the start of the succeeding stroke.
  • the automatic cut-off is provided .to eliminate excessive deposit as would otherwise occur due to the momentary stop and reversal of movement of the carriage at the completion of each stroke. Throughout the major portion of travel the carriage moves at a uniform speed but at the end of each stroke the speed decreases to what may be considered a dead stop before direction is reversed.
  • the mechanism controlling trigger operation includes a lever 21 engaging the trigger atone end and pivotally mounted at its other end to the traveling carriage.
  • a simple mounting for the lever may involve the use of a pin 28 passing through an opening in the end of thelever.
  • the lever is engaged by a roller 29 on a cross piece '30 -mounted at the lower ends of a pair of slidable rods 3
  • These rods extend upwardly through a guide block 32 forminga part of the traveling carrier, and at their upper ends are connected to a bar 33 on which is pivoted a roller 34 engaging a cam rail 35.
  • a pair of rods 36 extend upwardly from the bar 33 through a guide block 31 and carry a cross piece 38 for connection at each side with the end of a coil spring 39 mounted at its opposite end to the guide piece 31.
  • the lever 21 is raised and lowered to control the valve through the engagement of'the roller 34 with the cam rail 35, the formation of which is selected beforehand to insure opening of the the curvature at the roof .sides.
  • the cam contour of the member 40 may be such as to close and open the valve either suddenly or gradually depending upon operating condition.
  • the actuation of the valve preferably is gradual at the beginning and the end of each stroke. This tapering off of the flow insures a more uniform coating inas much as the distance traveled by the gun is greater when a convex surface is being sprayed.
  • uniformity of surface coating depends upon the relation existing between the extent of surface area to be covered, the amount of paint, discharged and the time and distance of gun movement.
  • the diflerence in the lengths of the arc of surface and the arc of gun travel may be compensated for by changing either the speed of gun movement, or the rate of paint flow.
  • the easiest method is to maintain gun travel at constant speed and vary the amount of paint sprayed as the gun passes over This can be done'simply by properly designing the contour of the trigger control ramp 35. More complex surfaces may be handled in the same fashion.
  • a surface to be coated may be substantially ogee in contour in which case the trigger valve is actuated to flow more paint when the gun travels over the concave portion and to how less during passage over the convex portion.
  • the cam rail 35 is movably mounted on the frame work 6 by means of a pin each end of the shift rail 43 so that the. control may be from either side.
  • the position of the cam rail may be electrically or magnetically controlled, and for fully automatic operation, its action may be dependent upon the interruption of a light beam'projected across the path of the moving body toward a photo-electric cell.
  • the gun In order that the nozzle of the gun will be directedat the proper angle to the work the gun is mounted in an oscillating holder 41 pivoted at its lower end on a pin 48, the axis of which is alined with the .valve trigger so as not to disturb valve operation.
  • an additional pin 49 on the carriage projects through an elongated arcuate slot 59 in the upper end of the holder and defines the range of swinging movement.
  • the holder has a lateral and slot connection U and each end is provided in the drawings a hand lever is associated with quick detachable 1 --any one of a number of replaceable spray guns.
  • ear5l for pivotal connection with a link 52 projecting downwardly from a swinging lever 53 and carrying a roller 54 which rides on a cam rail 55.
  • the shape of the cam rail 55 is such that the roller rides down when the movement of the carriage is toward the right in Figurel to swing the gun to the dotted line position indicated, wherein the nozzle isdirected inwardly toward the curved side of the roof while the movement in the other direction lifts the roller in conformity to roof contour and swings the gun to the other limit of oscillation in which the nozzle is again directed inwardly and toward the roof curvature along the opposite side of the body.-
  • the direction of spray is substantially normal to the surface.
  • a hinged latch 56 adapted to be swung into and out of hooked engagement with inclined abutment faces, as seen in Figure 8, positions an inwardly bowed spring blade 51 pivoted at 59 to removably clamp the gun against the face of the holder 41.
  • the pressure of the spring blade serves both disengagement of the hooked latch 56 and to hold the gun firmly regardless of any. slight variations in the size of the several guns used interchangeably.
  • a pin 60 is provided to engage with the finger piece 6
  • the traveling carriage which supports the oscillating gun holder includes a plate 65 forming a part of a vertically reoiprocable frame and having rearwardly projecting bolts 66, one in each of the four corners thereof, for attachment with a pair of vertically extending guide rails or channels ,61.
  • a plate 65 forming a part of a vertically reoiprocable frame and having rearwardly projecting bolts 66, one in each of the four corners thereof, for attachment with a pair of vertically extending guide rails or channels ,61.
  • the guide blocks 31 and 32 respectively, referred to hereinbefore as providing bearings forthe valve operating rods 3
  • Also carried by the uppermost pair of pins 66 is a transverse bar 69 supporting the inner end of a bearing pin 10 projecting from the'plate 65 and carrying a roller 11 whichengages a roof contour ramp or rail 12.
  • the rail 12 which is fixedly mounted in the main frame of the machine has the nozzle inwardly to a greater extent to prevent accidental a roller engaging surface which conforms substantially to the roof outline whereby as the carriage reciprocates back and forth across it will also move vertically in relation to roof conthe roof tour in order that the spray nozzl'e will at all times be maintained at approximately uniform distance from the surface being sprayed.
  • tension springs 13 are provided connected at opposite ends to extension members 14 on the channel 61 and'to a plate 15,
  • the channel rails 61 opening inwardly toward each other and engaging with the rollers 11 locate the parts and provide for relative vertical movement between the plate 15 and the parts associatedwith the roof contourroller 1
  • This plate 16 carries a series of rollersfwhich engage on all four sides of a track which is straight from end to end and is fixedly mounted in the main frame of the machine. Apair of such rollers 8
  • Another bracket 83 which may be in the form of a casting secured a to the plate 15 by a stud 84, carries the remain- 'ing rollers, two spaced pairs of which as at 85 and 86, engage the verticalface of the rail 80 opposite to that engaged by the roller 8
  • rollers 81 and 88 engage the underside of the'rail while the spaced rollers 88 engage the upper surface of the rail.
  • Each roller 88 is mounted on an eccentrieally disposed bearing shoulder 89 of a rotatable stud 92 projecting through the bracket 83 and having an upwardly extending arm 90.
  • connected at opposite ends to the respective lever arms the bearing studs' are under a constant force which tends to impart rotation thereto for crowding the rollers 81 and 88 into engagement with the top and bottom of the track 80 at all times.
  • a pin 93 Projecting rearwardly from the bracket 83 is a pin 93 to which is pivotaliy secured in any suitable fashion one end of the connecting rod 94 which imparts movement to the carriage from the traveling belt IS.
  • the opposite end of the connecting rod 94 is connected to a journal pin .95 secured to one leg of an angle plate 96, the other leg of which is fastened by a series of studs 91 to the flexible belt l3.
  • bleed opening I03. The size of the bleed opening will be predetermined to secure the proper degree of cushion action through the escape of air trapped and compressed within the cylinder I02 by the movement of the piston packing llll thereinto.
  • Factory equipment for use with a conveyor line including means to apply a surface finish to articles traveling on the conveyor line, mechanism for imparting movement to said means in .a direction trans 'erse' to the direction of travel of said articles and other mechanism acting in simultaneous relation with the action of the first mentioned mechanism for imparting movement to said means transverse to both the first mentioned movement and the travel of said articles.
  • Means for spray painting an irregular surface of an article traveling ona conveyor including a sprayer device, means for moving said device along the surface transversely to the direction of conveyon travel and other means for moving said device transversely to the direction of conveyor travel and simultaneously with and transversely of the first mentioned movement for cooperation therewith in, imparting to the device a predetermined path of movement.
  • a, conveyor for moving articles tobe sprayed for moving articles tobe sprayed, a reciprocating carriage adapted to be moved back andforth along the article in a direction transverse to the. direction of conveyor movement, means operating in timed relation to carriage movement for additionally reciprocating said carriage in a directiontransverse to both of the aforementioned movements, and a spraying device supported by .said carriage.
  • Paint spraying mechanism for coating curved surfaces including a conveyor for moving articles to be sprayed, a reciprocatory carriage adapted to be moved back and forth transversely of the direction of conveyor movementfa sprayer device supported by the carriage with its discharge nozzle in spaced relation to the surface of the Work, means additionally reciprocating said car riage on" a line transverse to both of the aforementioned movements and in timed relation to its first mentioned movement, and means for oscillating said. sprayer device in relation to said surface to maintain the axis of said nozzle substantially normal to the surface.
  • Paint spraying mechanism for coating curved surfaces including a continuously moving conveyor for articles to be sprayed, a reciprocating carriage adapted to support a sprayer device and movable transversely of the direction of conveyor movement in a path substantially conforming to the curved contour of the surface to be sprayed, and means operative during travel of-the carriage to oscillate the sprayer device relative to the carriage and direct the sprayer nozzle on a line substantially normal to said surface.
  • Paint spraying equipment for applying a uniform coating on a surface having an irregular curvature, including a track spaced from and conforming to the contour of said surface, means to move a spray gun on said track and valve control means for said gun to vary paint discharge in accordance with surface curvature, said control means including a valve operating member movable with the gun and a control ramp engaged thereby in the movement of the gun and shaped to predetermined contour in relation to track curvature to vary the extent of valve open-' ing in relation to changes in radii of track ourvature.
  • a conveyor line including an overheadtrack, a carriage supported by the track for reciprocation across the roof, a spray gun on the carriage, and means operative during carriage movement to' shift the vertical position of the carriage in accordance with roof contour and maintain substantially uniform spacing between the gun and roof in all positions of the carriage.
  • Paint spraying equipment for coating the curved roof of an automobile body while the body is moving on a conveyor line, including an overhead track, a carriage supported by the track for reciprocation across the curved roof surface, a spray gun oscillatably mounted on said carriage, and means for swinging the gun between opposite limits of its oscillatory path with each stroke of the carriage to position the gun so that the axis of paint discharge is always at substantially 90 to the roof surface being sprayed.
  • Paint spraying equipment for coating the curved roof of an automobile body, while the body-is moving on a conveyor line including a carriage adapted for reciprocation across the roof of the body, a straight line track for the carriage, a gun supporting assembly mounted on the carriage for relative vertical movement, a ramp rail conforming in outline to substantially the roof contour and engaging said assem bly to shift the vertical position thereof during carriage reciprocation for maintaining the same cam elements enga in the r k t move h v in given spaced relation to the roof surface. same to and from position to be engaged by said 12.
  • a reciprocatfollower In a paint spraying machine, a reciprocatfollower.
  • a spray gun having a flow cutofi valve, a track 13.
  • a frame In a paint spraying machine, a frame, a

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  • Spray Control Apparatus (AREA)
US14979A 1935-04-06 1935-04-06 Paint spraying machine Expired - Lifetime US2083633A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US14979A US2083633A (en) 1935-04-06 1935-04-06 Paint spraying machine
DEG92627D DE658334C (de) 1935-04-06 1936-04-07 Einrichtung zum Auftragen von Farbe o. dgl. auf grosse Gegenstaende, z. B. Wagenkoerper von Kraftfahrzeugen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US14979A US2083633A (en) 1935-04-06 1935-04-06 Paint spraying machine

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US2083633A true US2083633A (en) 1937-06-15

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US14979A Expired - Lifetime US2083633A (en) 1935-04-06 1935-04-06 Paint spraying machine

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DE (1) DE658334C (de)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2424418A (en) * 1945-08-02 1947-07-22 Rory Robert Metallizing machine
US2432795A (en) * 1944-04-20 1947-12-16 Continental Can Co Method of spraying cone tops
US2434125A (en) * 1941-10-01 1948-01-06 Howard V Schweitzer Painting method
US2505179A (en) * 1946-05-02 1950-04-25 W & J Martin Ltd Apparatus for spraying traveling materials
US2595151A (en) * 1950-06-26 1952-04-29 Thorval J Lockwood Potato waxing machine
US2744033A (en) * 1951-11-28 1956-05-01 Ransburg Electro Coating Corp Method and apparatus for spray coating of articles
US2754227A (en) * 1951-11-30 1956-07-10 Ransburg Electro Coating Corp Method and apparatus for spray coating of articles
US2785088A (en) * 1951-11-23 1957-03-12 Ransburg Electro Coating Corp Electrostatic coating apparatus and method
US2840037A (en) * 1954-04-02 1958-06-24 Howard V Schweitzer Mechanical movement for coating apparatus
US2879180A (en) * 1949-06-25 1959-03-24 Spra Con Co Machine and method for coating using an effuser reciprocating about a path having curvilinear ends
US3081736A (en) * 1961-02-24 1963-03-19 Gen Motors Corp Paint spray machine
US3172606A (en) * 1960-04-25 1965-03-09 Reynolds Spraying apparatus
US3200656A (en) * 1963-05-22 1965-08-17 Theodore N Baskett Mounting apparatus for traveling, structural-surface-processing appliances
US3379377A (en) * 1965-02-19 1968-04-23 American Standard Inc Spraying apparatus
US20130269265A1 (en) * 2012-04-12 2013-10-17 Jerry W. Vande Sande Composite Roof Conversion
CN114011632A (zh) * 2021-11-03 2022-02-08 浙江华立智能装备股份有限公司 一种数字化智能涂装生产线

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1216743B (de) * 1955-12-23 1966-05-12 Daimler Benz Ag Vorrichtung zum elektrostatischen UEberziehen von grossen Gegenstaenden

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2434125A (en) * 1941-10-01 1948-01-06 Howard V Schweitzer Painting method
US2432795A (en) * 1944-04-20 1947-12-16 Continental Can Co Method of spraying cone tops
US2424418A (en) * 1945-08-02 1947-07-22 Rory Robert Metallizing machine
US2505179A (en) * 1946-05-02 1950-04-25 W & J Martin Ltd Apparatus for spraying traveling materials
US2879180A (en) * 1949-06-25 1959-03-24 Spra Con Co Machine and method for coating using an effuser reciprocating about a path having curvilinear ends
US2595151A (en) * 1950-06-26 1952-04-29 Thorval J Lockwood Potato waxing machine
US2785088A (en) * 1951-11-23 1957-03-12 Ransburg Electro Coating Corp Electrostatic coating apparatus and method
US2744033A (en) * 1951-11-28 1956-05-01 Ransburg Electro Coating Corp Method and apparatus for spray coating of articles
US2754227A (en) * 1951-11-30 1956-07-10 Ransburg Electro Coating Corp Method and apparatus for spray coating of articles
US2840037A (en) * 1954-04-02 1958-06-24 Howard V Schweitzer Mechanical movement for coating apparatus
US3172606A (en) * 1960-04-25 1965-03-09 Reynolds Spraying apparatus
US3081736A (en) * 1961-02-24 1963-03-19 Gen Motors Corp Paint spray machine
US3200656A (en) * 1963-05-22 1965-08-17 Theodore N Baskett Mounting apparatus for traveling, structural-surface-processing appliances
US3379377A (en) * 1965-02-19 1968-04-23 American Standard Inc Spraying apparatus
US20130269265A1 (en) * 2012-04-12 2013-10-17 Jerry W. Vande Sande Composite Roof Conversion
US9260117B2 (en) * 2012-04-12 2016-02-16 Trinity Industries, Inc. Composite roof conversion
CN114011632A (zh) * 2021-11-03 2022-02-08 浙江华立智能装备股份有限公司 一种数字化智能涂装生产线

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Publication number Publication date
DE658334C (de) 1938-04-06

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