US2342375A - Rotary spraying machine - Google Patents

Description

Feb. 22,1944. F. sHuRLEY 2,342,375

ROTARY SPRAYING MACHINE Filed May 1v, 1940 5 sheets-sheetA 1 INVENTOR 1/ :R

` ATTORNEY Feb. 22, 1944.` F. sHURLEY ROTARY SPRAYING MACHINE 5 Sheets-Sheet 2 Filed May 17. 1940 Feb. 22, 1944. SHURLEY 2,342,375

ROTARY SPRAYING MACHINE Filed May 17, 1940 5 sheets-snaai 5 BY .Q- www Feb. 22, 1944. F. sHuRLEY ROTARY SPRAYING MACHINE Filed May 17, 1940 5 Sheets-Sheet 4 mvNToR.

' ATTORNEY.

FebQZZ, 1944. F. sHuRLEY 2,342,375

ROTARY SPRAYING MACHINE Filed Maylv. 1940- 5 sheet-sheet 5 ya ,"95 ya? ATTORNEY.

Patented Feb. 22, 1944 ROTARY SPRAYING MACHINE Frederick Shui-ley, Windsor, Ontario, Canada, assignor to Guthrie Ceramic Labelling & Machinery Co. Inc., Dover, Del., a corporation of Dela- Ware Application May 17, 194i?, Serial No. 335,682

8 Claims.

This invention relates to a decorating machine and it is one object of the invention to provide a machine by means of which bottles, cans, jars and other cylindrical or substantially cylindrical objects may have a coating of paint or the like applied to them as a decoration.

Another object of the invention is to provide a machine of such construction, wherein the bottles or other objects to be decorated may be advanced in step by step movements toward a position or station where the coating material is applied to them, rotary motion being imparted to the objects at the said station in order that the paint or other decorating material may be applied entirely about the same.

Another object of the invention is to provide a machine of this character so constructed that when it is in operation a turntable carrying the objects will be intermittently turned at predetermined intervals to such an extent that the objects will be successively brought into position opposite a paint applying device which is intermittently rendered operative in such timed relation to movements of the turntable that paint will be applied to an object as the object arrives at the proper position or station in cooperating relation to the paint applying device.

Another object of the invention is to provide a machine of this character wherein the paint apthe machine with object-holding pedestals rotat- :E

ably mounted and driven by a belt when in front of the spray gun, there being also a cam for actuating the gun carried by a rotating post from which projects an arm for actuating a latch and releasing the turntable at the proper time to permit rotation of the turntable.

Another object of the invention is to provide shields so mounted that they are moved into and out of position to shield portions of the objects, thus allowing only a portion of the objects to be coated, it being understood that in a machine having two or more spray guns, shields of dilerent sizes may be provided or the shield omitted at one of the coating stations so that the objects may have a multi-color decoration applied to them as they lpass the stations during opera tion of the machine.

Another object of the invention is to provide a decorating machine which is comparatively simple in construction, strong and durable, and not liable to get out of order.

Other objects and advantages will become ap parent from the accompanying drawings and iollowing specication.

The invention is illustrated in the accompany- .ing drawings wherein Fig. 1 is a view showing the decorating machine partially in side elevation-and partially in vertical section;

Fig. 2 is a view taken along the line 2-2 of Figure 1;

Figure 3 is a view in elevation looking at the right hand side of Figure 1;

Figure 4 is an enlarged view in elevation of a spray gun and its mounting and operating mech` anism;

Figure 5 is a top plan view of a cam forming part of the mechanism shown in Figure 4;

Figure 6 is a fragmentary sectional view taken along the line 6 6 of Figure 4;

Figure 7 is a perspective view showing a shield held in covering relation to a bottle during decorating of the bottle;

Figure 8 is a top plan view of Figure 7 with the bottle and the shield in transverse section; and

Figure 9 is a view taken along the line 9 9 of Figure 8.

This improved decorating machine comprises a frame I which may be formed of wood or metal and includes in its construction, corner posts 2 between which extend upper and lower bars 3 and 4 which are secured against the outer side faces of the legs. Intermediate bars 5 are secured to the legs against inner side faces thereof, and between these intermediate bars are secured inner bars 6 which extend longitudinally of the frame. A lower shelf 1 is supported at the front of the frame upon the lower bars 4. Smaller platforms 8 are secured upon end portions of the bars 6 and there have also been provided rear platforms 9 spaced from the ends of the frame and extending rearwardly from the rear one of the bars Midway the length of the frame the bars 6 are braced by vertically disposed braces Il). There has thus been provided a frame which is of strong and durable constructicn. Upper platforms II extend across the end portions of the frame and over the platforms 8 and are formed with recesses or cutouts I2.

A turntable I3 is disposed centrally of the frame and has upper and lower discs I4 and I5 held in vertical spaced relation to each other by an annular web or wall I6. The lower disc arries a depending centrally located sleeve is braced by Webs l5 and rotatably rit extending vertically between the A suitable number of spinupon which the bottles or other objects :at to be decorated are placed during 'he use of the machine.

Pairs of "open radially of the tu.

ding plateH it which extend rntable are carried by disc it between the spindles. The lower ends of the spindles protrude from the disc lli and carry pulleys 2t by inea-ns oi whichl rotary motion is to be tran-snai ted to the spindles or object carriers as they riove into position for spraying f t upon the hotties during intermittent rotation of turntable. A latch which has: the form of a bell crank is pivotally carried by a bracket .25 at back of the frame and extends in the d ection of the circumference of the turntable and is yieldably in position for its roller 2t to enter recesses or eats 2l in the periphery of the lower lli by a spring having one end secured to the 15 of the latch and its other end anchored to a block 5t mounted against a side face of one of the legs 2.

When the latch is moved a direction to shift the roller out of a recess, the turntable may be tv neel about its axis until the next recess moves into position to receive the roller, at which time rotation of the turntable will be halted. it will thus be seen that intermittent rotary motion may be imparted to the turntable and the turntable rotated in step by step movements, `each of which is suficient to bring one of the bottles carried by the rotary article carriers or spindles into position to have paint sprayed thereon.

In order to impart rotary motion to the spindies there have been provided belts engage about pulleys and the pulleys 32 being carried by posts rising from the platforms El and pulleys t'being fixed to vertically dis posed shafts 3f; and The shaft o5 is rotatably 1mounted in a bearing 3l carried by platform 'l sh-- is coupled to the shaft constitoting an element of a reduction gearing mounted in the housing or casing This casing t@ is mounted upon platform l and the reduction gearing includes a shaft carrying a pulley il about tvb 's trained a belt il?, constituting transmitting rotary motion. to the 1ithe pulley lt carried by the shaft inner flights of the belts 3l are adapte-d to bear against the pulleys of spindles located at the decoratin stations to impart rotary motion to these spindles and when the latch is moved to a releasing position, rotary motion Will after set forth until the roller of the latch enters another recess 'il and halts turning of the turn- .L 1 1 caribe.

about O asse.,

vided bearing brackets 5@ and 5l. Sprocket chains t2, which are trained about Sprocket Wheels carried by shafts 35 and 36 and shaits S serve to transmit rotary motion to the countersneits. Pulleys 55 which are rotatably supported by the spindles 5t engage outer ots oi the ch ins and serve as tighteners ror `he chains. Discs l are mounted at upper of the countershafts and each is upwardly irened at one point about its circumference, as shown at and, therefore, the discs El' constitute caros serving a purpose to be hereinafter set forth.

The countershait carries an arm 59, Which extends radially therefrom and at its Outer free end,l the arm carries an upstanding roller lill, and a linger lil, which is formed from a metal strip secured against a 'side face of the arm and has its outer end portion bent laterally from the arm. The length of the arm is such that during rotation of the shaft the side finge will engage the tree of arm or handle 23, of latch and the roller Will engage the pairs of depending plates itl which extend radially of the turntable and carried by disc l5 between the spindles. I'lhe roller t@ slidably engages the sides the plates 51 and by a sliding motion moves or rotates the turntable until the roller 25 drops into the recesses or seats 2i, in the periphery of the lower disc le once during each rotation of the shaft md the intermittent movement and latch moves to a releasing position which pernits the rotation of the turntable and the roller then moves into contact with the marginal edge of the disc l5 and enters in the next recess or seat 'l' to intermittently halt rotation ci the ntable. will thus be seen that rotation is intermittently imparted to the turntable by the slidable movement of the roller Gil, on the arm into the space between each pair of plates i '21, the extent to which the turntable is tued when released being such that during each turning movement a pair of spindles will be moved into position opposite the countershafts and the heads 5l thereof.

rThe bottles or other objects carried by the tables 2i are to be coated when located opposite the countershafts, r in other words, at the coating stations in position to be coated by paint sprayed toward and onto the bottles from the spray guns @2. The spray guns are of a conventional construction and each is supplied vlith paint fron/i a tank (it through a tube @li and air under pressure is delivered to the gun from a suitable source through a tube Each gun is secured to the sleeve ii of a rocher bar by a l?? and este? longitudinally of the in ection of 'he inner end thereof so that when the trigger of the gun is pressed upon by the actuatin 7 lever paint will be sprayed from the gun and onto a bottle or other object at the coating station.

Each paint tanl @il is held by a clamp lil the end of a tub which is mounted an upright position upon a base 'l2 and order to hold the post in its upright position there has been provided a bracing strip it carried by a standard lhrising from one of the brackets carried by the base The brackets extend longitudinally of the base and are formed with aligned openings 'it through a selected pair of which is passed a bolt constituting a pivot pin for a lever l .et it" inner since the roller rests upon the cam 51, rocking motion will be imparted to the lever during rotation of the cam. The outer end of the lever is pivoted to the lower end of a link 8| which has its upper end pivoted to the outer end of the rocker bar 66, and since the rocker bar is pivotally mounted by a bolt or pin 82 to the meeting ends of fulcrum strips 83 and 84 which are pivotally mounted by bolts 85 and 86, tilting movement of the lever will cause the rocker bar 66 to be swung vertically and the sleeve 65' carrying the spray gun shifted vertically along the post 1I from the lowered position shown at the right of Figure 1 to the raised position shown at the right of this ligure and then back to its lowered position. The sleeve 66 is pivoted to a sleeve 1l' slidably carried bypost 1l.

During the upward movement of the rocker bar and the spray gun, the trigger of the gun must be pressed upon to cause paint to be sprayed from the gun. In order to do so, there has been provided a roller 81 carried by a bracket B8 which is clamped about the post 1| in such position thereon that when the rocker bar and the spray gun carried thereby are swung upwardly, the trigger operating lever 69 which rests upon the roller 81 will be pressed upon and tilted about its pivot to actuate the trigger and cause paint to be discharged from the nozzle of the gun.

During operation of the coating machine, the motor is started and motion imparted to the belts 3| and the shafts 48 and 49. Bottles or other objects are set in place upon the tables 2l carried by spindles 20 and during rotation of shaft 49, the latch 24 will be moved to a releasing position so that the turntable I3 may be turned until the latch again engages in a recess of disc I5 and halts movement of the turntable. It will thus be seen that the turntable will be intermittently turned and the bottles will be successively moved into position opposite the spray guns at the coating stations.

In view of the fact that the belts 3| bear against the spindles which are opposite the spraying stations, the bottles resting upon the tables 2| of these spindles will be rotated, while at the coating stations, and the bottle will be coated throughout its circumference. The timing is such that during operation of the machine the cams 51 of the shafts 48 and 49 will cause the spray guns to be shifted upwardly to a raised position and their triggers moved in a direction to effect discharge of paint from the guns as spindles carrying the bottles arrive at the spraying stations and are turned so that the bottles will be coated throughout their circumferences. The spray guns are then shifted downwardly to shut olf their valves and the latch is moved to a releasing position allowing the turntable to be turned.

By providing two spraying stations, the bottles may be given two coats of paint before they are removed or if so desired, two operators may stand at opposite sides of the machine and each arrange bottles in place upon the tables 2! and remove them after they have been painted.

The spraying stations are at diametrically opposite sides of the turntable and in order to prevent a bottle at one side of the turntable from being sprayed with paint discharged from the spray gun at the opposite side of the machine and to also catch paint sprayed from a gun if a bottle is not resting upon a spindle at the spraying station, there has been provided a housing or hood 89 mounted over the center of the turntable and open at its opposite sides. This hood or housing has sloping bottom walls 90 which serve as bailies and at its top the housing cornmunicates with a conduit or duct 9| through 5 which a draft is created by a suitably located source of suction so that air and paint will be drawn into the housing and through the duct to a point where it may be recovered for further use or disposed of in any desired manner.

In Figures '1, S and 9 there has been illustrated means for permitting a portion of a bottle to be coated without the paint being sprayed upon the remainder of the bottle. This may be provided at each coating station if two coats l5 of paint are to be applied to the top of a bottle or only at one station, if it is desired to have the entire bottle first coated and then a second coat of a contrasting color applied to only a portion of the bottle.

It will be assumed that the bottle is to be entirely coated at the right hand station of Figure l and the upper portion of the bottle coated at the left hand station. In order that the second coat may be restricted to the upper portion of the bottle, there has been provided a shield 92 whi-ch conforms to the transverse curvature of the bottle and is of such height that it extends from the bottom of the bottle to a point spaced from the upper end thereof. This shield or mask. is formed of metal or of any other suitable material and has its lower end secured to a bracket 93 carried by a mounting strip 94 formed of angle metal.` The mounting strip 94 is mounted at ends of rods 95 which slide through bearing brackets 9B and a spring 91 yieldably holds the mounting formed by the strip and its rods in a retracted position. The bearing brackets are mounted under the base l2 and the spring is secured at its ends to the base and the mounting strip.

The cam 51 which is applied to the shaft 48 instead of the cam 5'.' previously used is formed with an auxiliary cam 98 extending radially therefrom for engaging the vertical flange of strip 94 during rotation of shaft 48. The relation of iiange 98 to the upwardly thickened portion of cam 5l' is such that the mounting and the shield carried thereby will be shifted toward the turntable and the shield disposed in covering relation to a 'bottle at the spraying station as the spray gun is shifted upwardly and its valve opened to cause paint to be discharged from the nozzle of the gun. The portion of' the bottle above the shield will be coated for the entire circumference thereof and after this second coat has been applied, the cam 98 will move in a direction away from the cross strip and the spring 91 will draw the mounting to its retracted position. It will thus be seen that a bottle having a multi-color decoration may be produced, and it will be obvious that if so desired. the shield may cover the bottle for its entire height and may be formed with openings such as are formed in a stencil so that scattered decorations or the like may be applied to a bottle after the ilrst coat of paint is applied.

It will thus be seen from the foregoing description that I have provided a decorating machine that will at all times be positive and efficient in its operation in carrying out the purposes for which it has been designed.

Squeegee-screen and type or roller printing in ceramic colors are usually carried out to transpose a predetermined configuration upon the articles to be decorated, and are not practicable for full surface decorating.`

Thisinvention `provides a machine to enable full surface decorating to be carried out upon substantially cylindrical articles, such as bottles or cans, such decorating being either partially or Wholly over the exterior surface ci such bottles or cans. The improved machine gives the article a prime or basic coating or design, and then before the article leaves the machine, gives it, if desired, another coating or superposed design either of the same or a different color. Any design in one or more colors while the article is in the machine may be supplied.

As the spraying of a solid color is the roost economical method of producing solid colors upon an article, this commercial factor is utilized and the machine operates economically to carry out its principle of operation, so as to be automatic and speedy in action, Without the hand of man touching the articles While being operated upon by the machine.

The invention as machine, enables cans, bottles, or the like to be given a full surface coating on the neck portion only, with imitation silver or the like, novv espe.- cially favored uses in imitation of toil, or a banding can be carried out, on the neel: body of the article. The invention enables sloecic designs to be anp l to the articles. The invention e bles sei/e i colors to be applied, registration of ,he saine being taken of by resting the article imma-:die ely on its Amoving to its correct spraying position. Lrtherntcne,

the invention embodied in the roe provide for an evenness of api'il-ifation oi color, by the relative rotation e scie and the control exerted upon the color ajonlicatin means.

The intermittently iriova. ai lele conveyor brings the article to a color position, Where it is arreste .i its movement, and the article simultan rotated, iinpinged by color, either by rect or through the intermediary si a mask. This having been ac'- cornplished, the moi/'ern "t of the article intermittently arrested in its ovement during its rotation, is cont-in1 ed. lf'ol, double coating, or muh ti-color the sarde article is subjected to one or more similar operations.

For convenience of oper embodied in the embo frents shown and de scribed, consists ci a rotary table rovided with spaced, article-holding shi elles, having at one or more points of its "y, a spray gun station or stations provi ,.h spray guns to project the color and inipinge the color upon the arn ticle any oi the iorins described. As each article supported on each of spaced article holding spindle ves during the rotation of the table at one of the spray gun stations, the table is locked by a le nst further rotary rnove the simultaneously vl gun. This deco" nleted, the i, plied to the spindle e, spray gun action is shut or^ cle moved to its place of exit, or to other spray gun station, where the saine actions rer at themselves,

The invention n the prior art this, in that intermittent ie ng of articlesin connection with sdueegeees and type or roller ceramic printing has been kno n, but such a feeding action has not been coin vith spray action; and While no novelty is claimed for a spray ation, the invention as ry force agowenn 1 i o Vi.-

gun, this being long known, the setting of such a spray gun into activity during simultaneous rotaticn of the article while in axially stationary position, and the discontinuance of its activity upon the continued spatial movement of the article diiers from anything heretofore proposed. The art has not heretofore been acquainted with an automatic machine to carry out the foregoing objects, nor with the particular means devised to carry it out.

While have shown the referred embodiment of my invention, it is to be understood that various changes in the size, shape and arrangement of parts may be resorted to without departing from the spirit of above and the scope of the appended claims.

What l' claim is:

i. in a spraying machine, a frame, a turntable carried thereby, a latch releasably holding said turn -ble stationary, vertical spindles roother ially thereof, objectat upper e, ndles, rollers carey said "rindies, a carriei mounted opposite side oi said turntable and able vertically, directed tov-.Yards the 'ii-table by sexi ca er, means for turning on r gun when the carrier is moved vertically to shift the gun indo position for use, a drive shaft, a driven shaft rotated from the drive shaft, a cain at the upper of said driven for said ca er moving the spray into and out "posnion for use, an arm carried by said driven shaft and extending radially therefrom for intermittently engaging said latch du? ng rotation of the driven shaft and movthe latch to a r^l asing position allowing rotation oi the turr4d ,-e, and nie-ans driven from said drive shaft for rotating turntable when the latch is a releasing position and then rotating a seindle opposite the sl y gun while the turntable is held. stationary by the latch.

In a decorating machine, a frame, a ti rntable carried by said iraoie, sic'ndles rotatably carried by said turntable having article carrying above the tu.; table, roll rs ca ried by said spi dies, a latch for releasably holding said turntable stationary, means :for rotating the turntable when the latch is in a releasing position, means for rotating the spindles While turntable is held stationary including a driving shaft, a decstato a inounti' g carried by the ira-ne e mounting comfroin said base, a said standard, a

i 'Y10' en sleeve slide-ble verhaally a v`ng second sleeve pivcted to the rs t sleeve, an arm pivotally mounted and at one end pivoted to the second sleeve, a lever rivotally mounted and slidably received through the second sleeve, a spray gun carried by the second sleeve and having trigger, actuating bar for said trigger eX- tendiug upwardly from the so' ,y gun, a member g said bar die opposite the decorating station including a driven shaft rotated from the drive shaft, an arm extending laterally from said driven shaft, means carried by said arm for engaging the latch and moving the latch during rotation of the driven sliaft to a releasing position in timed relation to movement of the mounting, and means carried by said arm for engaging said abutments and imparting step by step rotation to said turntable 10 when the latch is in a releasing position.

FREDERICK SHURLEY.

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