Патент USA US2412138код для вставки
Dec. 3, 1946. - H. A. FINK 2,412,138 APPARATUS FOR SPRAYING CROWN CAPS Filed Dec. 2, 1944 3 Sheets-Sheet 1 3mm ‘ fféntyliz'nk. Dec. 3, 1946. H, A, FINK ' 2,412,138 APPARATUS FOR SPRAYING CROWN CAPS Filed Dec. 2, 1944 m“ I m“ 6M15. s . I. s g; 3 Sheets-‘Sheet 2 .58 a I ‘* s I‘ l l l . I a; ‘ ‘Ii ‘i: k}; . | IE “ll w | 1 I} ‘ i ' H] Fl _Q_ , i? ” ~ 3* ‘ I 5*“ . 6/ . _ ' Ms Dec. 3, 1946. > ' H. A. FINK 2,412,138 APPARATUS FOR SPRAYING CROWN CAPS Filed Dec. 2, 1944 3 Sheets-Sheet 3 417-“; 27 13.5 .90 £5 32 JUAN/I'M Henry JZ. R7178. Patented Dem-3, 1946 I 2,412,138 UNITED STATES PATENT OFFICE 2,412,138 APPARATUS FOR SPBAYING CROWN CAPS Henry A. Fink, Pelham Manor, N. Y., ascignor to Continental Can Company, Inc., New York, N. Y., a. corporation of New York Application December 2, 194d, Serial No. 566,348 5 Claims. (on. 91-45) 1 \The invention relates to new and useful im provements in an apparatus for spraying crown caps. Owing to the shortage in the tin supply, crown caps have been made from salvaged plate such as old used tin can bodies that have had the decorations removed therefrom, or from parts of the can bodies which have not been decorated. Caps have also been cut from scrap materials and ' 2 Figure 4 is a transverse sectional view through the drying oven; . Figure 5. is an enlarged view in side elevation of the magnetic roller and a portion of the con veyors associated therewith. The apparatus for coating the crown caps and drying the coating-after it is applied thereto in cludes a feed hopper in which the caps to be coated are placed promiscuously. Associated with old crowns have been reformed. The old crowns the hopper are devices for feeding the caps onto have had the decorations removed therefrom a conveyor belt with all of the caps arranged in and have then been reformed. In all such in- rows and facing upwardly, that is, the caps are stances as referred to above it is found necessary placed so that the inside of the cap may be to recoat the caps in order to make them com sprayed from above. The conveyor is a non-mag mercially useable. 15 netic type of conveyor and moves continuously. An object of the invention is to provide an The conveyor passes beneath the spray nozzle apparatus for spray coatingcrown caps which which is oscillated transversely of the path of apparatus sprays ?rst one side of the crown cap travel of the conveyor so as to spray all of the and then the other while it is continuously mov caps which are arranged as noted in a plurality 20 of rows. The conveyor passes over a magnetic A further object of the invention is to provide ing through the apparatus. an apparatus of the above type wherein the caps are placed in rows on a continuously travelling endless conveyor for the ?rst spraying opera pulley which will hold the caps tight against the conveyor until the conveyor leaves the pulley and then the caps will drop onto another endless tion and are then inverted and placed on a sec 25 conveyor which conveys the caps in inverted posi tion, that is, with the outer side of the cap fac ond conveyor for a second spraying operation. ing upwardly and while in this position, the caps A further object of the invention is to pro are fed beneath an oscillating spray coating device vide an apparatus of the above type wherein a for spraying the top side of the cap. The con magnetic roller is utilized for the transfer of the crown caps from one conveyor to the other 30 veyor then takes the caps through a relatively long heated drying tunnel where the volatiles in in an inverted position. the coating material are driven off and the ma A still further object of the invention is to pro terial set so that the caps may be handled with vide an apparatus of the above type'wherein the out marring, after which the conveyor discharges the caps onto another conveyor which leads passed through a drying tunnel so that the coat ing material is set su?iciently for the handling 35 through a baking oven where the coating on the caps is converted into a hard enamel surface. of the caps and the passing of the same through Referring more in detail to'the drawings, the a baking oven. apparatus includes a framework which is prefer A further object of the invention is to provide ably made of angle iron. As shown in Figure 1, in an apparatus of the above type means for this angle iron frame includes a series of legs cleaning the coating material from the conveyor and longitudinally extending members. The after it is passed through the drying oven. longitudinally extending members I are provided These and other objects will in part be obvious with suitable brackets 2 in which is mounted a and will in part be hereinafter more fully de scribed. ' 45 shaft 3 carrying a belt wheel 4 over which an endless belt conveyor 5 passes. Mounted on the In the drawings legs 6 is a cross shaft 1 carrying a roller 8 for Figure l is a view showing more or less di agrammatically and in side elevation a portion supporting the belt. The legs 9, 9 extend above of the apparatus for spray coating the crown the conveyor 5 and are provided with side mem caps; 50 bers ID in which shafts II and I2 are mounted, Figure 2 is a similar view showing a portion of one at one end of the side members and the other the apparatusfor drying the coated caps; at the other end. Figure 3 is a transverse sectional view through Mounted on these shafts are pulleys l8 and I 4 the apparatus adjacent one of the spray nozzles; respectively, over which a belt conveyor l5 runs. and This belt conveyor is made of non-magnetic crown caps after they are spray coated, are ‘2,419,138 woven steel. The pulley I3 is made of ‘magnetic material. The legs ".13 extendabove the conveyor 3 and carry a table II at the upper end thereof on which is mounted a hopper l3. The crown 5 caps to be coated are placed promiscuously in this hopper. Suitable means is associated with the hopper for feeding the crown caps 'there from through a plurality of chutes 20 so that the caps are delivered from the chutes, all facing in 10 the same direction. As shown in Figure 1, the - crown caps which are indicated at C are so posi- ' tioned on the conveyor I! as they come from the chutes that the inside of the cap will face up wardly. In the present embodiment of the in 15 vention there are ?ve chutes and ?ve rows of caps deposited upon the conveyor and carried through the apparatus as shown in Figure 3. This hopper and the means for feeding the caps and delivering the same through the ?ve chutes 20 4 mounted on the frame of the machine in a man ner similar to the motor 33 and illustration of the same has not been given. The sprayer, head 23 is enclosed in a housing indicated in full lines at 31 to which is attached a stack‘ 33 controlled by a damper 33. The volatiles of the coating material escaping therefrom will be collected in this housing and carried away by suction through the stack 33. There is a housing 40 associated with the sprayer head 23 and this housing which is indicated in full lines in Figure 1 and in full lines in Figure 3, is connected to a stack 4| which is controlled by a damper 42. After the caps have been sprayed on both sides, they are carried by the conveyor 5 into and through ‘a tunnel 43, a part of which is shown in Figure 1 and another part of‘ which is shown in Figure 2. The tunnel is shown in cross section in Figure 4. The legs 44, 44 of the frame carry the guide bars 33, 33 along which the belt conveyor so that they all face in the same direction is of 5 passes. well known construction used in the manufac ture of crown caps and further detailed descrip bars 45, 43 which support a perforated plate 43. Also mounted on these legs are angle This provides a heat chamber 41 which is located beneath the path of travel of the woven belt con Mounted on the legs 3, 3 is a supporting bracket 25 veyor. Placed beneath the perforated plate are 2|. ‘This bracket is L-shaped and the left hand burners 43, 43 and de?ectors 43, 43. This heat end thereof extends upward and supports an arm chamber extends the full length of the tunnel and there are burner pipes arranged in sections 22 on which a sprayer head 23 is mounted. This tion thereof is_not thought necessary. - along the tunnel. The tunnel 43 is in the form may be oscillated transversely of the travel of 30 of an arch-shaped metal housing which is sup the conveyor. The conveyor i5 is operated by a ported on‘the guide bars 35, 35. Associated with sprocket chain 24 which runs over a sprocket the tunnel are a number of stacks, two of which wheel on the shaft l2 and also over a sprocket are indicated at 50. These stacks all lead to an exhaust manifold which discharges the fumes wheel on the shaft 3. The crown caps are delivered onto the conveyor 35 coming off from the drying caps to the outside of the building. ll in ?ve rows. This conveyor moves continu The belt conveyor 5 not only carries thev caps ously and will carry the caps beneath the sprayer through the drying tunnel, but also carries them ‘ head 23 which, as it oscillates back and forth through a cooling hood indicated at 5|. Said transversely of the conveyor, will completely coat the interior surface of the crown cap and also 40 cooling hood overhangs the path of travel of the belt conveyor and extends lengthwise thereof for the'skirt. As the belt conveyor passes around a relatively short vdistance. A pipe 32 leads into the magnetic roller l3 the caps will be held mag the hood at the upper end» thereof and discharges netically tightly against the conveyor until the air into the hood. The cooling air can pass down conveyor leaves the magnetic roller, after which the caps will be released and will drop onto the ~ through the ‘belt conveyor and out through the discharge end of the hood. The air is supplied conveyor 5 in inverted position, thatis, with the outer surface of the cap facing upwardly. In to the pipe 52 from a suitable fan 53. this inverted position the crown caps are carried The belt conveyor 3 runs over a pulley 33, thence over a pulley 55, and thence under a pulley 54. beneath a spray head 25. The spray head '28 is sprayer head is so mounted on the arm that it mounted on an arm 23 so that it may be oscil lated thereon. This arm 23 is carried by a cross The shaft 51 carrying the pulley 53 is operated from a motor 33. A sprocket wheel carried by bar 21 mounted on the legs l3, It. In Figure 3 the shaft 51 operates a sprocket chain which runs over a sprocket wheel connected to the shaft 53 of the drawings the spray head His shown more in detail. The supporting bar 23 has a lug 23 - on which the pulley 54 is ?xedly mounted. This motor drives the conveyor 5. The other end of ?xed thereto and a link 30 is connected to the the conveyor is mounted on the bracket 2 and lug at one end and to a crank 3| at the other this bracket is carried by the frame so that it end carried by a shaft 32 which is driven by a may be adjusted by an adjustable screw 30 for motor 33. The motor is mounted on a bracket taking up slack in the conveyor. The belt on 34. This bracket 34 is carried by one of the legs I3. As the shaft 32 is rotated it will cause the 60 its return underneath the tunnel passes over sup porting rollers 3|, 8|. The belt conveyor also sprayer head to oscillate back and forth trans-' passes between two rotating brushes 62, 62, one versely of, the conveyor. This range of oscilla of which engages the upper face of the conveyor tion is sufficient to coat the crown caps C rest and the other engages the lower face of the con ing on the conveyor 5. It is noted from Figure veyor. The purpose of these brushes is to re 3 that there are guide bars 35, 35 which extend move from the belt conveyor the coating material lengthwise of the apparatus, which guide bars are which is dried thereon as the caps are carried mounted on the supporting legs of the apparatus through the drying tunnel. These brushes 32, ‘ and serve as a means for guiding and supporting 62 are driven by a suitable motor 33. the conveyor 5. Located beneath the conveyor The crown caps are discharged from the cool 8 is a drip pan 36 so that‘the coating material 70 ing hood onto a deflector plate 34 and thence contacting the belt conveyor in between the onto a conveyor 35 which carries the caps into a crowns can pass through the same owing to the baking oven. fact ‘that it is a woven steel belt and will -.be col The operation of the apparatus is thought to . I The sprayer head 23 is oscillated by a motor 75 be clear from the description given above. The lectedinthe drip pan. 9,412,138 6 crown caps are placed in the hopper l9 and are coated on rboth sides and the coating set so as to fed therefrom onto the belt conveyor l5, all fac permit the handling of the caps. ing upward so that the inside of the caps may be coated. They are placed on the conveyor in par allel lines and, as illustrated, there are ?ve lines of crown caps. This conveyor carries the caps beneath the sprayer head 23 where they are coated with a suitable coating material, after which the caps are inverted and placed on the belt conveyor 5. The belt conveyor 5 conveys the 10 caps through the housing 40 where they are again sprayed by the spraying head 25. This ensures that the crown caps will be completely sprayed 3..An apparatus for coating crown caps com ‘ prising a conveyor, means for placing caps to be coated on said conveyor in a plurality of rows, a spray head associated with said conveyor for coating the exposed upper faces of the caps thereon, a second conveyor disposed beneath the ?rst named conveyor onto which the caps are discharged in inverted position, a second spray head associated with the said last named con , veyor for coating the upper exposed faces of the caps thereon, a drying tunnel through which said second conveyor passes after leaving the second with the inside facing upwardly for the ?rst coat 15 spray head and means for heating the airin said tunnel and a cooling hood under which said con ing operation so that during the second coating on both sides thereof. The crown caps are placed operation after the caps have been inverted, they veyor passes after leaving the drying tunnel whereby the caps before leaving the conveyor are are resting on the conveyor so that contact with completely coated on both sides and the coating the conveyor is only with the lower edge of the skirt of the crown cap. This leaves the outer face 20 set so as to permit the handling of the caps. 4. An apparatus for coating crown caps com of the crown cap which must be well protected prising a conveyor of non-magnetic woven metal. with the coating free from contact with the trav means for feeding the caps onto said conveyor in elling belt conveyor. This belt conveyor is trav a plurality of rows with the inner faces of the elling continuously and the caps are placed one caps facing upwardly, a spray head associated after another on ‘the conveyors, coated, inverted with the conveyor, means for oscillating the and then again coated and ?nally pass into and spray head transversely of the conveyor for coat through the drying tunnel. ing all of the caps on the conveyor as they pass 'After leaving the drying tunnel the caps pass beneath the spray head, a magnetic roller over beneath a cooling section. The drying time and which said'conveyor passes operating to retain temperature is sufficient to keep the crown caps the caps on the conveyor until they reach an in from being marred when they fall from the con verted position, a second conveyor beneath the veyor 5 onto the conveyor 65 which leads to the ?rst named conveyor onto which the caps drop baking oven. with the outer faces thereof facing upwardly, a It is obvious that many changes may be made in the details of construction without departing 35 second spray head mounted above said last named conveyorand means for oscillating said from the spirit of the invention as set forth in second spray head for coating the other face of the appended claims. ' ~ all of the caps thereon. I claim: , 5. An apparatus for coating crown caps com-' 1. An apparatus for coating crown caps com prising a conveyor on which the caps are placed 40 prising a conveyor of non-magnetic woven metal, means for feeding the caps onto said conveyor in in a plurality of rows for coating, a spray head a plurality of rows with the inner faces of the associated with said conveyor for coating the ex caps facing upwardly, a spray head associated posed faces of the caps, said conveyor being of with the conveyor, means for oscillating the non-magnetic material, a magnetic roller over which the conveyor passes, said roller operating to hold the caps on the conveyor until they pass from the magnetic in?uence thereof, a second conveyor onto which the caps drop when released spray head transversely of the conveyor for coat ing all of the caps on the conveyor as they pass beneath the spray head, a magnetic roller over which said conveyor passes operating to retain the caps on the conveyor until they reach an in from the first conveyor in an inverted position, a spray head associated with the second conveyor 50 verted position, a second conveyor beneath the first named conveyor onto which the caps drop for coating the exposed uncoated face of the caps. with the outer faces thereof facing upwardly. a 2. An apparatus for coating crown caps com second spray head mounted above said last named prising a conveyor on which the caps are placed conveyor, means for oscillating said second spray for coating, 9. device associated therewith for spray coating the exposed face of the caps, a sec 55 head for coating the other face of all of the caps thereon, a drying'tunnel, means for heating the _ and conveyor disposed beneath the first named drying tunnel, said tunnel being disposed so that conveyor onto which the caps are discharged in the conveyor with the coated caps thereon pass inverted position and a second device associated through the tunnel, and a cooling hood disposed with said last named conveyor for-spray coating the exposed uncoated face of the caps, a drying 60 relative to the tunnel so that the coated caps after leaving the tunnel pass beneath said cooling tunnel through which said second conveyor passes after leaving the second spray head and _ hood so that the coating applied to the caps will be set and hardened su?iciently for handling be means for heating the air in said tunnel and a fore the caps leave said second conveyor. cooling hood under which said conveyor passes after leaving the drying tunnel whereby the caps 65 before leaving the conveyor are completely HENRYLFINK.