US2100068A

US2100068A - Coating apparatus

Info

Publication number: US2100068A
Application number: US662226A
Authority: US
Inventors: Melvin J Conklin
Original assignee: SAM L BINGHAM S SON Manufacturing CO
Current assignee: SAM L BINGHAM S SON Manufacturing CO; SAM'L BINGHAM'S SON Manufacturing Co
Priority date: 1933-03-23
Filing date: 1933-03-23
Publication date: 1937-11-23
Anticipated expiration: 1954-11-23

Description

IllllI llllr 2 sheets-sheet 1 lill :IIN

l M. J. CONKLIN COATING APPARATUS Original Filed April ll, 1932 Nov. 23, 1937.

2 Sheets-Shet 2 M. J. CONKLIN coATING APPARATUS original Filed April 11, 1932 Nav. 23, 1937.

INVENTOR /V// kc//v/f//fi i 1 ATTORNEY Patented Nov. 23, 1937 PATENT ol-Fics COAT'ING APPARATUS Melvin J. Conklin, Kalamazoo, Mich., assignor to Saml. Binghams Son Mfg. C0., Chicago, Ill., a corporation of Illinois Substitute for application Serial No. 604,412, `April 11, 1932. This application March 23, 1933, Serial No. 662,226

27 Claims.

coating inking cylinders or rolls and the like.

Second, to provide an apparatus by means of which cylinders suchv as inking cylinders may be veryquickly and economically coated while maintaining uniform diameter throughout.

Third, to provide an apparatus of this character wherein a flow-retar-ding member is arranged in spaced relation tothe roll or cylinder to improve the operation thereof.

A Fourth, to provi-de an apparatus of this character having improved means for rcollecting the excess coating material.

Fifth, to provide improved means for manually adjusting the transverse position of the flow noz- 20 Zl relativeto the roll or cylinder to be coated.

Sixth', to provide an apparatus having the above desirable features'and characteristics which is simpleV and economical in its parts and effective r, and efficient in operation. y

Seventh, to provide a method of coating inking cylinders and the'like which avoids the necessity of heating or bringing the cylinders vtoa predetermined temperature, and at the same time produces highly satisfactory results with a minimum of care or attention onthe part of the oprator.

JObjects Vrelating to details and economies of my invention will appear from the description to follow. The invention is defined and pointed out in the claims.

Astructure which is a preferred embodiment of my invention is illustrated in the accompanying drawings, in which:

l Fig. 1 is a fragmentary view in side elevation of a coating apparatus embodying the features of my invention. V

Fig. 2 is an enlarged fragmentary top plan view.

Fig. 3 is an enlarged fragmentary view in side 15 elevation.

, Fig. 4 is an enlarged detail section on a line correspon-ding to line 4,-4 of Figs. 1, 3, and 5the thickness of the coating being exaggerated for purposes of illustration. 50 Fig. 5 is an enlarged fragmentary detail section on a linecorresponding to line 5 5 of Fig. 4, showing the flow-retarding member in operation, the'thickness of the coating material on. the roll being exaggerated for purposes of illustration.

55 Fig.,6 is a detailsection'on line 6 6 of Fig.'13.

First, to provide an improved apparatus for (c1. sp1- 43) In the structure illustrated by the drawings, I

numeral I indicates the inking roll or cylinder of a printing press or the like having beveled ends 2 and a central shaft 3, the

ends

4 and 5 of which` project beyond the ends of the roll proper. The roll or cylinder is supported in an inclined position by the upper pair of

bearing rollers

6, 6 and the lower chuck 1. The bearing rollers are carried by the` transverse member 8 of the inclined support 9 which is in the form of a rectangular frame, the frame being inclined to the horizontal as illustrated by Figs. 1 and 3. rIhe member 8 is adjustable longitudinally of the support to accommodate rolls of diierent length. The chuck 1 has a conical socket I0 for receiving the lower end 5 of the shaft 3 of the cylinder or roll I to be coated.

'Ihe chuck is carried by the shaft 'II which isy journaled to the lower transverse member II of the frame 9 and is connected to the electric motor I2 by means of speed reducing gears in the gear box I3, the shaft I4 of the motor being con-` nected to the shaft I5 of the speed reducing gears by means of the lclutch I6. The motor and gear box are mounted on the panel I'I which is in turn mounted on the frame 9. The frictional engagement of the lower end 5 of theshaft of the cylinder or roll with the conical socket I6 ,of Ithe chuck is suicient to cause the shaft to be rotated with the chuck. With the parts thus arranged, it will be apparent that the inking rolls or cylin` ders may be readily placed in and removed from the apparatus and that variations in the size of the rolls or cylinders, and the length and diameter of the shaft are provided for. The bearing rollers 6 provide a centering support for the upper end* 4 of the roll or cylinder shaft.

The frame 9 is pivotally mounted at 9| on a substantially horizontal platform I 8 which is held in elevated position by means of the legs I9. The upper end of the inclined frame 9 is supported on the platform I8 by means of the uprights 20, the upper ends of the latter being Vconnected by the cross member 2I'which is disposed above the slide actuating screw 22. To permit adjustment ofthe inclination of the frame, the uprights 20 have aligned pin holes 92 for receiving the cross pin 93 which carries the frame.

The trough 23 is carried by the frame 9 in substantially parallel relation to the axis of the roll or cylinder and under the latter for receiving ex-n cess coating material 24 from the blade-like dam or retarding member 25 which is preferably tapered at its lower end. 'Ihe lower end of the drain trough is provided with a flared down spout between Ait and the bracket 38.

26 for delivering the excess coating material to the water-jacketed pan or tank 21 which is arranged on the platform I8. The excess of Vcomposition dropping off the roll after the nozzle has passed below the lower end of the trough 23 passes directly to the tank 21. Y

At one side of the supporting frame, lY mount a 'slideway 28 in substantially parallel relation to the axis of the roll or cylinder to be coated. 'Ihe carriage or slide 29 travels on this way and is provided with a ysegmental mit 3ll,they lower end of which is adapted for coaction with the driving screw 22. The lower end of thedrivingY screw' is connected to the shaft 1| carrying thechuck 1 by means of 'sprockets and the chain or belt 3| so that as the roll or cylinder is rotated,

the carriage or slide is moved downwardly;

The segmental nut 30 is mounted on the slide 29 for vertical adjustment by means of the bell crank lever 32 which is pivoted to the vcarriage at 33 and is held in inoperative position by the leaf spring 34. With the parts'thus arranged, when the carriage reaches the end of its-stroke at the lower end of the cylinder or roll, it kmay be quickly retracted Vby manually moving the bell crank lever 32 against the force of the leaf spring 34 to lift the segmental nut 3!) out of.

`engagement with the driving screw 22 and sliding the carriage back to the upper end of they screw or in any desired position. Y Y

'I he carriage or slide Vhasan upright or post 35 thereon having a lbore receiving the transverse arm 31. The arm 'is longitudinally and rotatably adjustable on the post and is held inV adjusted positonrby means of Vthe set screw 83. At its outer end the arm is provided with a bracket 38 which is provided with a socket receivin'gvtheVV end of the arm. Y

The bracket has a stationary abutment 39 ar. ranged with its face in substantially parallel relation to the axis of the arm. The nozzle support 40 is provided with a sl1ank'4'l` which Yis journaled to the bracket 38 and has a movable abutment 42 facing the stationary abutment-.39.

Y A nut or Vcap 43 is threaded to the end of the shank 4 l and constitutes anY outer thrust member nozzle support is provided witha handle V41;l extending at substantially right angles to the axis of the movable Vabutment whereby the nozzle can be manually adjusted relative to the rollor cylinder disposed thereunder. VWhen it is desired to retract the slide or carriage' the handleA 41 .is manipulated to throw the nozzle 4i5in such position that the stream 48` of coatinglmaterial owjing therefrom clears the previously coated roll or cylinder. The handle 41v is Valso used'toadjust the nozzle to vary the transverse position of the stream 48 of coating material relative to the cylinder or roll. v

Coating material is supplied tothe nozzle 45 from the tank 21 by means of the pump 49 which is driven by the electric motor' 50,'the pump and motor being mounted on thepanel `l which is in turn carried by the platform 1'I`8. The pumpV is connected to the interi'orofv the tank 21n by means of the set screw 58.

' side of the'roll or cylinder.

aidocs' the conduit 52 and'V to the nozzle 45 by means of the upright pipe 53 and the flexible pipe 54, the arrangement being Vsuch that the carriage or slide 29 is freeto move to the ends of its stroke without interference. The bottom of the tank or pan. V21` is provided with an electrical heating element-55 for maintaining the temperature of the coating material contained therein. The glass tube 56 is provided at the end of the tank for indicating the level of the water jacket surrounding the tank.y Y Y The upright 35 ofthe slide carries an arm 51 which 'is pivotally and vertically adjustable thereon and secured in its adjusted position by This arm 51 is provided with spaced longitudinal slots 59 and 60 for receiving the shank 6I of the blade-like dam or retarding member 25. The shank 6l is threaded to receive the nuts 62 and-63 disposed above and below the armi 51. for .Clamping engagement therewith. The blade is disposed tangentially of the roll or cylinder to be coated with its edge 64 adjacent to but preferably Vin, slightly spaced relation'to the side of the roll as illustrated b-y Figs. 4 and 5. By means of the spaced longitudinal slots 59 and 60 in the arm 51, the flowretarding member 25 may be disposed on either Y Y By means of the clamping

nuts

62 and 63, the transverse axis of the blade may be adjusted inV any desired angular position relative to the axis of the roll or cylinder. YBy way of example, the'blad'e 25 is shown with its Vtransverse axisarranged at an angle of about forty-flve degrees with the axis of the roll or cylinder I.

The retarding member 25 is disposed'in'ad- Vance of the nozzle 45 so as to retard the natural flow of the coating liquid 65 whichis discharged upon the roll or cylinder by the nozzle. The retarding member Yand nozzle both being mounted on 'thecarriaga they travel together in whatever relationthey may `have been adjusted.

The coating compositionV or material is discharged upon the `vroll or cylinder in a free and unrestricted stream 48, preferably at one side Yof the verticalV plane passing through its axis (see Fig. 4) andso that the surface ofthe roll or cylinder upon which the material is discharged is traveling downwardly as illustrated by the.l arrow. 'I'heV retardingV member is disposed on the side of the roll opposite the nozzle 45 and so that the surface ofV the roll or cylinder adjacent the retarding member is traveling upwardly.` The result is that the retarding member serves to dam up or hold'back the coating material as indicated at 66 sorthatthe final coating indicated at 61 is very uniform Vin thickness and the coated roll is of uniform diameter fromv end to end.V

' As the stream ofcoating material is poured Vupon the downwardly Vmoving side ofthe roll or cylinder, it tends to form a thickened body as indicated at 65'whichtendsto flow vertically downward un-der the roll'or cylinder, but this action is anticipated by the direction of travel' of the rollin the same direction so that the thickened body of coating material is delivered' to the retarding member 25 shortly after the Vcoating composition starts its upward travel. Theretarding member thereupon acts'temporarily to restrain the excess material 24 upon the roll, leaving the evenly distributed' coating-61 on the rollor cylinder. Itis believed that this dammng or temporaryrretention of the excess of coating'fluid bythe blade 2-5 results in a more evenrde'posit, the' excess which is not deposited drainingjfrom' the roll.

A further advantage is that by this apparatus the rolls may be coated while cold, it heretofore having been deemed necessary to lheat the rolls to a predetermined temperature in order to provide a coating even approximating uniformity. Such coatings required great care and skill. With my apparatus, however, a uniform coating may be had with a minimum of attention.

Suitable coating compositions are well know in this art and therefore I do not specify the particular compositions as my apparatus is well adapted for applying the coating compositions now in use as stated. Such coatings may be applied and substantially perfect rolls, that is, rolls of uniform diameter, are secured.

In the operation of my apparatus, the roll I to be coated is placed with the lower end of its shaft 3 in the conical socket I0 of the chuck 1 and the upper end 4 of the shaft is placed between the roller bearings 6. The nozzle 45 andretarding member 25 are then adjusted inposition relative to the roll I. The electric motors I2 `and 50 are set in operation and the carriage is moved by the driving screw 22 from the upper to the lower end of the roll. At the same time, the pump 49 delivers the coating material from the tank 2'Il to the nozzle 45, the latter discharging the free and unrestricted stream 48 of coating material directly upon the downwardly moving side of the roll as the carriage advances. On the opposite or upwardly moving side of the roll and in advance of the nozzle with respect to the direction of travel of the carriage, the retarding member 25 acts to uniformly distribute the coating material on the roll, the lower end of the retarding member, preferably tapered, directing the excesscoating mate rial 24 to the trough 23 which returns such material to the tank 21.

When the operation of coating the roll ory cylinder is completed, the handle 21 is manipulated so that the nozzle 45 throws the stream 48 of coating composition clear of the roll or cylinder and the arm 51 is swung so as to throw the retarding member 25 clear of theroll or cylinder. lThe segmental nut 3Il is then elevated by means of the bell crank 32 to disengage its lowerend from the driving screw 22 and the carriage 'is retracted to 59 its initial position. The inking cylinder or roll is readily removed from the apparatus by merely lifting it out of the conical socketlll of the chuck.

While my improvement is simple and economical in its parts, nevertheless it greatly increases the scope and usefulness of coating apparatus, insuring as it does'a uniform coating' on the roll or cylinder. I

While I have found the arrangement and process specically described in the specification to be the most satisfactory, nevertheless, I-am not to be considered as limited to such specific arrangement and process, at least in the broader aspect of the invention.

VI have illustrated and described my improvements in an embodiment which I havefoun-d very practical. I have not attempted to illustrate or describe other embodiments or adaptations, as

the roll or cylinder to be coated in an inclined position, a coating fluid discharge nozzle traveling ina line parallel to the axis of the roll or cylinder and adapted to discharge the coating material directly upon the surface of the roll or cylinder so that the surface receiving the coating material travels downwardly, the coating material at the point of contact with the roll or cylinder being unconflned, and a flow-retarding member traveling at substantially the same speed as said nozzle and positioned in advance thereof and in spaced coacting relation to the roll or cylinder and re-` mote from the point of contact of the coating material from the nozzle with the cylinder or roll and in such relation that the surface of the roll over which the flow retardation is effected travels upwardly.

2. Apparatus for coating a roll or cylinder, the combination of means for supporting and rotating the roll or cylinder to be coated in an inclined position, a discharge nozzle traveling in a line parallel to the axis of the .roll or cylinder and adapted to discharge coating material directly upon the surface of the roll or cylinder so that the surface receiving the coating material travels downwardly, the coating material at the point of Contact with the roll or cylinder being unconi'lned, and a flow-retarding member traveling at substantially the same speed as said nozzle and positioned in advance thereof and in coacting relation to the roll or cylinder and remote from the nozzle and in such relation that the surface of thev roll over which the flow retardation is effected travels upwardly. y

3. Apparatus for coatingl a roll or cylinder, the combination of a discharge nozzle traveling in a line parallel to the axis of the roll or cylinder and adapted to discharge coating material directly upon the surface of the roll or cylinder so that the surface receiving the coating material travels downwardly, the coating material at the point of contact with the roll or cylinder beingunconned, and a flow-retardingk membertraveling in advance of said nozzleand in coacting relation-to the roll or cylinder and Vremote from the point of contact of the coating material with the cylinder or roll and in such relation that the surface of the roll over which the flow retardation is effected travels upwardly.

4. Apparatus for coating a roll or cylinder, the combination of means for supporting and rotating the cylinder or roll to be coated in an inclined position, means for discharging coating material upon the roll or cylinder in an unrestricted streamsaid last named means comprising a nozzle adapted `to travel parallel to the axis of the roll or cylinder and disposed to discharge the coating material upon the roll or cylinder so that the surface receiving the coating material travels downwardly, and a retarding member disposed in spaced relation to the roll so that the surface over which the retardation of the coating material is effected travels upwardly.

5. In a coating apparatus of the class described, the combination of means for discharging coating material rupon an inclined roll or cylinder in an unrestricted stream, said means comprising a nozzle adapted to travel parallel to the axis of the roll or cylinder and disposed to discharge the coating materialV upon the roll or cylinder so that thesurface receiving the coating material travels downwardly,and a retarding member disposed in relation Yto the roll so that the surface over which the retardation of the coating material is effected travels upwardly.

6. In a coating"- apparatus of the class' described, the combination of means for discharging coating material upon an inclined roll or cylinder in an unrestricted stream, said means comprising a nozzle adapted to travel parallel to the axis of the roll or cylinder and disposed to discharge the coating material upon the roll or cylinder so that the surface receiving the coating material travels downwardly, and a retarding member having an edge disposed in coasting relation to the roll so that the surface over which therretardation of the coating material is effected travelsupvvardly.VV

7. A coating apparatus for inking rolls and the like, comprising means for supportingV and rotating the roll to be coatedin an inclined position, means for discharging coating material upon said roll comprising a nozzle traveling in a plane Vparallel to the axis of the roll and disposed to discharge coating material upon the roll'at one side of the longitudinal center thereof so that the surface of the roll at the point of discharge yis traveling downwardly, and a blade-like retarding member pointed at its Vlower end disposed verticallyr and tangentially of the roll and opposite to and in advance of the point of discharge of the coating material upon the roll, said retarding member being disposed so that the surface of the roll adjacent the retarding member travels upwardly.

8. VThe combination with traveling means for flowing a liquid coating material upon an inclined rotating roll, of means carried by said traveling means for retarding the natural flow of the composition on the rollxincluding an arm' moving with said traveling means, and a vertical blade adjustably secured to said arm for coaction with the roll as the latter rotates and the blade is moved parallel to the axis thereof.

9. VThe combination with means for flowing a liquid composition upon an inclined rotating roll, of means for retarding the natural flowof the composition on the roll including an arm moving with said liquid applying means, and a ow retarding member adjustably secured to said VV5 Q`position, a coating fluid discharge nozzletraveling in a line parallel' to the axis of the roll or' cylinder and adapted to dischargeY the coating material directly upon the surface of the roll or cylj combination of means for supporting and rotator cylinder being unconfined, and ailowfretardl ing member traveling at Ysubstantially the same,

,speed as said nozzle and positioned in advance thereof Vand in coacting relation to the roll or cylinder and remote from the nozzle.

12. Apparatus for coating a roller-cylinder. the Y arcades Vtraveling in advance of said nozzle and in coacting relation to the roll or cylinder and remote from the point of Contact ofthe coating material with thercylinder or roll and in such relation Y that the surface of the roll over which the flow retardation is effected travels in the opposite verticalY direction.V

13-. In a coating apparatus of the class described, the combination of rmeans for discharging coating material upon an inclined roll or cylinder in an vunrestricted stream, said means comprising'a nozzle adapted to travel parallel to the axis ofA the roll or cylinder and disposed to discharge the coating material upon the roll or cylinder so that the surface receiving the coating material travelsY in one vertical direction, and a retarding'member having an edge disposed in coacting relation to the roll so that thesurface over which' the retardation of the coating material is effected travels in the opposite vertical direction.

14. Apparatus for coating inking rolls and the like, comprising means for supporting and rotating the roll to be coated in an inclined position, means for pouring an unrestricted stream of coating material upon said roll comprising a nozzle traveling in a plane parallel to the axis of the roll and disposed to discharge coating material directly Vupon the roll, and a blade-like retard- ,ing member disposed at an angle to the axis of the rollA and having aY portion adjacent the outer periphery of the roll and in advance of the point ofv discharge of the coating material upon the roll.

15. In a roll coating apparatus, the combination with vmeans for supporting and rotating a rolll to be coated in an inclined position, of a carthe roll, fa coating fluiddischarge means adapted to` pourfcoating material upon the roll in a uniform unrestricted stream, and a flow retarding member carried by said carriage and positioned inV advance of said coating material discharge means at the side opposite said stream and acting to control the ow of the coating material longitudinally of the roll.

16. Aj rolll coating apparatus provided with traveling means for pouring a free stream of coating fluid upon an inclined rotating roll, the traveling means-moving from the upper to the lower endofthe roll during its delivery stroke, and a flow retarding member carried by said traveling means and movable longitudinally of andr adjacent the roll in spaced Yrelation to and in advance of the stream of the coating fluid.

' 17. A roll coating Vapparatus comprising means for rotating a rollf to beV coated oncits axis in an Vinclinedcpositiom'a dam traveling longitudinally f of the roll and disposed tangentially thereof and so thatcthe surface of the rollY adjacent the dam travels upwardly, and means for pouring Va free stream of fluid coatingmaterial upon said roll at a point at the rear of 'said dam. e Y

18. A roll coating apparatus comprising means for rotating a roll to be coated on its axis in an Vinclined position, a dam traveling longitudinally ofthe roll,V and means for pouring a free stream of fluidzfcoating material upon saidroll at a point angularly removed from and at the rear of said dam.

19. A coating apparatus for inclined inking rolls and the like comprising a nozzle traveling in a plane parallel to the axis of the@ roll to be coated and adapted to deliver a free stream of coating fluid to one side of the roll, and a blade-like retarding member pointed at its lower end disposed vertically and tangentially at the other side of the roll to be coated and in advance of the said nozzle for controlling the natural flow of the coating fluid on the surface of the inclined roll.

20. A coating apparatus for inclined inking rolls and thelike Comprising a nozzle traveling in a plane parallel to the axis of the roll toy be coated and adapted to pour a free stream of the coating 'fluid directly on the roll, and a blade-like retarding member disposed tangentially of the roll to be coated and in angular relation to and in advance of the said nozzle for controlling the natural flow of the coating fluid onthe surface of the inclined roll.

21. A roll coating apparatus for inclined rolls, comprising a carriage, a coating fluid discharge means carried by said carriage and adapted to pour a free stream of the coating fluid directly on the roll, and a flow retarding member carried by said carriage and positioned in angular relation to and in advance of said coating material discharge means for controlling the natural ow of the coating iluid on the surface of the inclined roll.

22. The method of applying a coating of uniform thickness to an inking roll or the like, comprising rotating an unheated roll to be coated in an inclined position, pouring fluid coating material thereon in a free stream moving longitudinally of the roll and beginning at the upper end thereof, and retarding the natural flow of the coating material longitudinally of the cylinder.

23. The method of applying a coating of uniform thickness to an inking roll or the like, comprising rotating a roll to be coated in an inclined position, pouring fluid coa-ting material thereon kin a free stream moving longitudinally and at one side of the roll and beginning at the upper end thereof, and retarding the natural ow of the coating material longitudinally and at the other side of the cylinder.

24. The method of applying coating to an inking roll or the like which comprises rotating the roll to be coated in an inclined position, pouring a free stream of coating fluid thereon, moving the point of application of said coating to said roll downwardly along the latter and damming the natural flow of the composition longitudinally of the roll at a point in advance of and angularly spaced from said stream.

25. The method of applying coating to an inking roll or the like which comprises rotating an unheated roll to be coated in an inclined position, pouring a free stream of coating fluid thereon, moving the point of application of said coating to said roll downwardly along the latter and damming the natural flow of the composition longitudinally of the roll at a point in advance of and angularly spaced from said stream.

26. In a machine of the character described, the combination of means for supporting a roller in inclined position with respect to the horizontal, a nozzle for directing a stream of molten composition onto the-surface of said roller in excess of the quantity required to form a coating thereon, means for rotating said roller and effecting relative movement-between the roller and nozzle in a direction longitudinally of the roller beginning at the upper end of the latter, and a deflector member maintained in Xed longitudinal position with respect to said nozzle and adapted to contact the roller surface a short distance in advance of the nozzle, said member acting to divert oif from the roller surface any composition tending tc flow by gravity beyond the member.

27. In a machine of the character described, the combination of means supporting a roller to be coated in a position to permit draining of composition along the roller in an endwise direction, means for applying composition progressively throughout the length of the roller surface and in an amount in excess of that required to form a coating of the desired thickness, and means act-v ing mechanically in advance of the point of application to remove composition from the roller surface.

MELVIN J. CONKLIN.