US3132967A - Method and apparatus for applying a material to an object - Google Patents

Method and apparatus for applying a material to an object Download PDF

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Publication number
US3132967A
US3132967A US150040A US15004061A US3132967A US 3132967 A US3132967 A US 3132967A US 150040 A US150040 A US 150040A US 15004061 A US15004061 A US 15004061A US 3132967 A US3132967 A US 3132967A
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United States
Prior art keywords
hopper
tray
particulate material
opening
coating
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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
US150040A
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English (en)
Inventor
Spraul Joseph Robert
Estates Palos Verdes
Leland L Peart
Everett A Greer
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.)
Rheem Manufacturing Co
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Rheem Manufacturing 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
Priority to BE164003D priority Critical patent/BE164003A/xx
Application filed by Rheem Manufacturing Co filed Critical Rheem Manufacturing Co
Priority to US150040A priority patent/US3132967A/en
Application granted granted Critical
Publication of US3132967A publication Critical patent/US3132967A/en
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
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C19/00—Apparatus specially adapted for applying particulate materials to surfaces

Definitions

  • This invention relates to apparatus for applying a material to an object. It relates more particularly to apparatus for applying a particulate material, such as a powdered resin or a metallic powder, so as to form a coating on a surface of an object.
  • a particulate material such as a powdered resin or a metallic powder
  • a suggested use is the application of a plastic resin or metallic coating to the internal surface of the head and bottom of a metal shipping container.
  • metal shipping containers such as black steel drums and pails
  • metal shipping containers are used extensively for transporting and storing a wide variety of products, but their effective use can be greatly extended if the inside of such containers is coated with a material resistant to corrosive activities and reactions of products which cannot now be carried and stored in such drums because of such product activities and reactions.
  • a material resistant to corrosive activities and reactions of products which cannot now be carried and stored in such drums because of such product activities and reactions.
  • the apparatus of the present invention make it commercially feasible to apply quickly, easily, and relatively inexpensively, a single, firm, solid, complete coating of corrosive-resistant material to the entire surface of the head or bottom of a standard black steel shipping container, or to selected surface areas, free of voids, in a single coating operation, so that the black steel head or bottom so treated has all of the corrosiveresistant characteristics of more expensive metals, such as stainless steel.
  • paratus for applying such a coating to the head and bottom members of metal shipping container, before or after the assembly of the container, so as to render said container resistant to corrosive activities and reactions of products packed therein.
  • the invention consists of the construction, arrangement and combination of the various parts of the device whereby the objects contemplated are attained, as hereinafter set forth, pointed out in the appended claims, and illustrated in the accompanying drawings.
  • FIGURE 1 is a side elevational view of the apparatus of the present invention.
  • FIGURE 2 is a front elevational view of said apparatus.
  • FIGURE 3 is an enlarged cross-sectional view taken on line 3-3 of FIGURE 1.
  • FIGURE 4 is a cut-away view similar to FIGURE 3, but showing the piston in extended position.
  • FIGURE 5 is a further enlarged view showing a detail of the apparatus illustrated in FIGURE 4.
  • FIGURE 6 is a View similar to FIGURE 3, but with the apparatus in dumping position.
  • FIGURE 7 is a front elevational view form of the apparatus.
  • FIGURE 8 is an enlarged view showing a detail of the apparatus illustrated in FIGURE 7, but in dumping position.
  • FIGURE 9 is a view taken on line 9-9 of FIGURES.
  • FIGURE 10 is an enlarged view taken on line 101i) of FIGURE 7.
  • a supporting frame 10 serves as an open top bench and has legs 11 and transverse brace members 12 and 13.
  • Vertical arms 14 and 15 extend upwardly from supporting frame 10, and in turn support horizontal arms 16 and 17, which are in the same plane as each other, but are spaced apart from each other so as to leave a substantial open space 18 therebetween.
  • arms 20 are mounted on arms 16 and 17, in substantially parallel relationship to each other to define said open space 18,. Disposed between and supported by said arms 20 is a hopper 21.
  • the bottom 22 of hopper 21 is preferably funnel-shaped and has an open end 23 in which a downwardly directed, hollow tubular member 24 is disposed.
  • Tubular member 24 Mounted on tubular member 24 is a collar 25.
  • a lever arm 26 is mounted on a rotatable shaft 27, which passes through collar 25 and tubular member 24 to the inside of tubular member 24, where it is connected to suitable sifter means, or a valve, such as a butterfly valve (not shown), disposed so as to selectively retain or release powder stored in hopper 21.
  • a deflecting cone 28 and a vane 29 are mounted on the lower open end of tubular member 24. Preferably, cone 28 and vane 29 are disposed with their lower open ends below the plane of arms 16 and 17.
  • ⁇ A support frame 30 may be mounted on hopper 21 to support a sock or conduit 31, which has access to the interior of hopper 21, said access being provided by any suitable means, such as a collar 32. Sock 31 may be utilized to release air pressure in hopper 21.
  • Supporting frame 10 has internally disposed therein a bin 40, the bottom 41 of which is funnel-shaped and has an open lower end 42 in which a downwardly directed hollow tube 43 is disposed.
  • a T-connector 44 is mounted on the lower end of tube 43.
  • An air pressure line 45 is of a modified connected to one side of T-connector 44, and a hollow tube or conduit 46 is connected at one end 47 thereof to the other side of T-co-nnector 44.
  • the other end 48 of conduit 46 is connected to hopper 21.
  • a frame is rotatably suspended in bin 4d. Suspension is attained by supporting the upper end 51 on shafts 52 and 53, which are rotatably supported as at 54- and 55 respectively, on supporting frame 10. Shaft 53 extends externally from supporting frame 16, and a crank arm 56 is mounted on the protruding end 57 of shaft 53.
  • a fluid system cylinder and piston assembly 69 which has a cylinder 61 disposed in upright position in frame 50 at substantially the center of frame Stl.
  • a piston rod d2 projects upwardly from cylinder 61.
  • a support and centering platform member 63 Mounted on the upper end of piston rod 62 is a support and centering platform member 63.
  • a valve 64 may be mounted on supporting frame and operatively connected to cylinder and piston assembly 60 by connection means (not shown) so as to selectively move piston rod 62 and platform 63 up and down in a vertical plane.
  • a tray member 70 preferably cylindrical, has a side wall '71, and a bottom 72 which has a centrally located opening '73 designed to receive a drum head or bottom or other object to be coated. Seated on said bottom 72 and secured thereto by any suitable means, such as bolts '74, is a fiat ring '75, which preferably has a beveled internal edge '76. Ring is is disposed in tray '71 so that its central opening overlies opening 7 3 of tray '79. Ring '75 may have an annular groove 77 formed in the bottom surface thereof.
  • Bottom 72 of tray 73 is mounted on upper end frame 50.
  • the object to be coated is designated by the numeral 2%.
  • an alternative form of hopper suspension may be provided.
  • a single vertical arm 1% and a single horizontal arm 1131 are provided.
  • a ring 102 which receives a hopper 103, preferably of cylindrical configuration.
  • a sifter feed assembly 110 which may comprise overlying discs 111 and 112, slidably mounted on each other, said 1 discs 111 and 112 having spaced apart openings therein, the openings in one disc being disposed so as to be selectively aligned with either the openings or the solid surface portions of the other disc, for selectively opening or closing the bottom 164 of hopper 16 3.
  • Disc 111 may be supported on rollers 113 mounted on hopper 103 as by brackets 114, and other rollers 115 may be mounted on hopper 114 so as to abut against the edge of disc 111, said rollers 113 and 11.5 serving to aid the selective sliding movement of disc 111 on disc 112.
  • a fluid system cylinder and piston assembly 120 may be pivotally mounted at one end thereof on hopper 183 by any suitable means, such as a bracket 121.
  • the free end 122 of a piston rod 123 is pivotally connected to one end of a rocker arm 124.
  • the other end of said rocker arm is mounted on disc 111.
  • Disc 111 may thus he slidably moved on disc 112 to open or closed positions by actuation of fiuid system assembly 120.
  • tray iii is mounted on and supported by a transverse plate 133.
  • Flate 130 has mounted thereon protruding shafts 131 and 132.
  • Shafts 131 and 132 are rotatably mounted on supporting frame 119.
  • Rocker arms 146 may be pivotally mounted on plate by means of mounting plates 141, and each of said mounting plates 1-11 may also support a fluid system cylinder and piston assembly 142 pivotally mounted thereon. The free end 143 of each piston rod 144 of each of said fluid system assemblies 142 is pivotally connected to a rocker arm 149.
  • Shaft 131 has a free end 133 which protrudes beyond supporting frame 16.
  • a sprocket 134 mounted on which an endless chain drive is mounted.
  • Chain drive 135 is also mounted on a sprocket 136 which is driven by a power source, such as a motor 1.37.
  • a quantity of resinous or metallic powder is introduced into hopper 21 by way of conduit 46.
  • a drum head When a drum head is the object to be coated, it is heated in an oven (not shown) until it reaches :a temperature suificient to cause the powder later deposited thereon to flow, and to substantially maintain that temperature during the coating operation.
  • a temperature suificient to cause the powder later deposited thereon to flow, and to substantially maintain that temperature during the coating operation.
  • heating to a temperature of approximately 457 F. gives satisfactory results, but it will be understood that the temperature will vary with different metals, various gauges of metals, and kind of powder to be applied thereto.
  • drum. head 200' is removed from .the oven and placed in the iappanatus of the present invention, with the surface of the drum head which is to be the interior surface when the drum head is mounted on a drum body, facing upward.
  • Drum head 2% is placed on support and centering platform member '63, which is disposed substantially at the center of the drum head 200.
  • Drum head 200 is then in position directly under opening 73 in tray A ring 75 of proper dimension to fit head 200 has meanwhile been seated on and secured to bottom 72 of may '70.
  • Fluid system cylinder and piston assembly 60 is then actuated to dispose drum head 200 in opening 73.
  • drum heads generally have a curl area adjacent their peripheral edge, the curl area being designed .to fit over a mating curled lip on a drum body to which the drum head is to be applied.
  • a coating to the inside surface of said curl area of a head, principally because a double seam of the drum head on the drum body is used, and it is desirable to eliminate excess material in the double seam area Under such conditions, a. ring 75 is'provided with a beveled edge 76, the pointed edge of which will be disposed so as to mask the portion of the surface of the curl area where no coating is wanted, as best illustrated in FIGURE 5 of the drawings.
  • Ring 75 is also provided with an annular groove 77 disposed so as to receive the outer peripheral edge of drum head 200, which in drum manufacture is generally upturned, again as best illustrated inFIGUR'E 5.
  • drum head 200 is thus disposed in opening 73 in abutment with ring 75, it is held in that position by cylinder and piston assembly 60.
  • crank 56 is manipulated to rotate frame 50 and tray 70, whereupon the apparatus will assume the position illustrated in FIGURE 6, and all excess powder which has not adhered to heated head 2% will drop into bin 41
  • Crank 56 is again manipulated to return frame 50 and tray 70 to their originnal positions.
  • Cylinder and piston assembly 60 is then activated to lower platform 63, with drum 'head are seated thereon, and drum head are is then removed from the apparatus.
  • drum head 20% after it has received its coating.
  • the operation hereinabove described produces a substantially uniform coating of substantial thickness, clear of voids, over the entire exposed surface of drum head 200, but at times post heating will produce a more uniform coating.
  • drum head 2% is returned to the oven after coating. It has been found that post-heating for nine minutes at 400 F. gives satisfactory results, but again this time and temperature are given as examples, and not as limitations, the time and temperature being varied, dependent on the material being coated and the powder used, and post-heating time and temperature, in any event, are not critical.
  • a ring 75 may be provided which, instead of overlying said flange, will be designed to meet the peripheral edge of drum 200, or the outside edge of any other object to be coated, exposing the entire surface to the powder, and producing a coating over said entire exposed surface.
  • Heated drum head 200 is then brought into position under opening 73 in tray 70, and cylinder and piston assemblies 142 are activated, and rocker arms 14% are thus moved to bring the free ends thereof into contact with the under surface of drum head 200 to move drum head 200 into opening 73 and to clamp it into abutting position against ring 75 and retain it in that position.
  • Cylinder and piston assembly 120 is then activated to align the openings in disc 111 with the openings in disc 112 and allow the powder in hopper 103 to flow and be deposited in tray 70.
  • power source 137 is activated, and chain drive 135 will cause shaft 131 and tray 70 to rotate, whereupon the apparatus assume the position illustrated in FIG- URE 8. All excess powder which has not adhered to drum head 200 will drop into bin 40. Power source 137 is then again activated to return tray 70 to its original position.
  • Cylinder and piston assemblies 142 are then again activated to move rocker arms 140, thus permitting drum head 200 to move out of contact with ring 75, out of opening 73, and in position to be removed from the apparatus.
  • Excess powder in bin 40 may be returned to hopper 103 in a manner similar to that hereinabove described.
  • Apparatus for applying a particulate material to a heated body so as to form a coating on one surface thereof which comprises: a supporting frame; a hopper supported by said frame and adapted to receive and discharge said particulate material; means adjacent the bottom of said hopper for selectively retaining and discharging said particulate material, and spreading particulate material discharged from said hopper; a tray rotatably mounted on said frame in suspended position below said hopper so as to receive and retain particulate material discharged from said hopper; said tray having an opening in the bottom thereof to receive said heated body; a flat ring internally mounted on the bottom of said tray and extending into said opening; means for disposing and retaining said heated body in said opening in abutment with said ring; and means for rotating said tray so as to discharge particulate material therefrom.
  • Apparatus for applying a particulate material to a heated body so as to form a coating on one surface thereof which comprises: a hopper mounted in elevated position and adapted to receive, retain and discharge said particulate material; means adjacent the bottom of said hopper for selectively retaining and rapidly discharging and spreading said particulate material over a broad area; a supporting frame; a rotatable tray mounted on said frame below said hopper, in position to receive particulate material discharged from said hopper, said tray having a centrally disposed opening to receive said heated body; a frame suspended from said tray; a fluid system cylinder supported by said suspended frame; a piston rod protruding upwardly from said cylinder; a platform mounted on the free end of said piston rod and adapted to support and center said heated body in said opening; and means for rotating said tray so as to discharge particulate material from said tray.
  • Apparatus as defined in claim 4 including power actuating means for moving said rocker arms so as to move said heated body into and out of said opening.

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  • Coating Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
US150040A 1961-11-03 1961-11-03 Method and apparatus for applying a material to an object Expired - Lifetime US3132967A (en)

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BE164003D BE164003A (sr) 1961-11-03
US150040A US3132967A (en) 1961-11-03 1961-11-03 Method and apparatus for applying a material to an object

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3380433A (en) * 1964-09-14 1968-04-30 Rheem Mfg Co Apparatus for applying a particulate material to an object
US3414425A (en) * 1964-09-14 1968-12-03 Rheem Mfg Co Method for applying a particulate material to a body
US3429295A (en) * 1963-09-17 1969-02-25 Nuclear Materials & Equipment Apparatus for producing vapor coated particles
US3558052A (en) * 1968-10-31 1971-01-26 F I N D Inc Method and apparatus for spraying electrostatic dry powder
US4244318A (en) * 1979-12-31 1981-01-13 Sperry Corporation Thin particulate film spin coater
US4990208A (en) * 1986-10-31 1991-02-05 Seiko Epson Corporation, A Japanese Corporation Method of manufacturing an optical recording medium

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US907365A (en) * 1908-03-11 1908-12-22 George Bleisten Machine for coating plates or stones.
US1721866A (en) * 1927-06-21 1929-07-23 Henry A Junge Measuring and dispensing device
US2719093A (en) * 1952-06-03 1955-09-27 William H Voris Methods of applying plastic coatings
US2737461A (en) * 1950-09-16 1956-03-06 Jerome S Heisler Process of forming adherent polyethylene coating on metal surfaces
US2844489A (en) * 1957-12-20 1958-07-22 Knapsack Ag Fluidized bed coating process

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US907365A (en) * 1908-03-11 1908-12-22 George Bleisten Machine for coating plates or stones.
US1721866A (en) * 1927-06-21 1929-07-23 Henry A Junge Measuring and dispensing device
US2737461A (en) * 1950-09-16 1956-03-06 Jerome S Heisler Process of forming adherent polyethylene coating on metal surfaces
US2719093A (en) * 1952-06-03 1955-09-27 William H Voris Methods of applying plastic coatings
US2844489A (en) * 1957-12-20 1958-07-22 Knapsack Ag Fluidized bed coating process

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3429295A (en) * 1963-09-17 1969-02-25 Nuclear Materials & Equipment Apparatus for producing vapor coated particles
US3380433A (en) * 1964-09-14 1968-04-30 Rheem Mfg Co Apparatus for applying a particulate material to an object
US3414425A (en) * 1964-09-14 1968-12-03 Rheem Mfg Co Method for applying a particulate material to a body
US3558052A (en) * 1968-10-31 1971-01-26 F I N D Inc Method and apparatus for spraying electrostatic dry powder
US4244318A (en) * 1979-12-31 1981-01-13 Sperry Corporation Thin particulate film spin coater
US4990208A (en) * 1986-10-31 1991-02-05 Seiko Epson Corporation, A Japanese Corporation Method of manufacturing an optical recording medium

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BE164003A (sr)

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