US2588874A - Glue applying machine for glue presses - Google Patents

Description

March 1 1, 1952 L. QUICK GLUE APPLYING MACHINE FQR GLUE PRESSES 4 shc egts -sheet 1 Filed April 3, 194'? INQENToR,

ATTORNEY March 11, 1952 QUICK 2,588,874

GLUE APPLYING MACHINE FOR GLUE PRESSES Filed April 3, 1947 4 Sheets-Sheet 12 IN VEN TOR. [/aya Que 2% .4 T TORNEY March 11, 1952 QUICK GLUE APPLYING MACHINE FOR GLUE; PRESSES 4 Sheets-Sheet 3 Filed April s, 1947 1.... mm m INVENTOR. J fyd 621181 A TTORNEY L. QUICK GLUE APPLYING MACHINE FOR GLUE PRESSES March I 1, 1952 4 Sheets-Sheet 4 Filed April 3, 1947 NVENTOR.

AT TORNEY operation.

Patented Manll, 1952 :UNITED STATES PATENT .osFiF-icE GLUE. APPLYING MACHINE :E-OR "GLUE PRESSES Lloyd Quick,'IfPou'ghkeepsie, ".N. .Y., .as'signor. to J ames L. :Taylor 1) Manufacturing Company, 1 a

corporation of New York App!ication-April 3, 1947,Serial No: 739,235

A Claims. (-01. l18--1) This invention is related to those described in -my copending application Serial --No. 604,122,

filed July 10, 1945, now Patent No.j2,537,279,-and in United States Patent No. 2,49 8,06 4,dated Sep- "tember24, 1946, and is-particularly concerned ---wi'th an apparatusforapplying glue to objects. suchas to the-"edgescf; thin boards which areto be united into a composite paneL and' thereafter feeding the glued boards to" a glue press inwhich theyare glued together.

' Inmy aforesaid-applicationI have disclosedta conveyor system which comprises i a; loading or {feeding portion and an unloading or take-ofi' *portion between which is a glue-applying unit, whereby freshglue can be continuouslyand automatically applied to objects, such as pieces of In United States Patent No." 2,408,064 is disclosed a glue press for gluing together objects,

"such as'thin boards; to whichglue has been pre- -viously" applied bya gluing machine of the type above described.

Before. my present invention, itwas necessary for" an operator to manually lift the; glue-coated boards" from the take-oft portion of the conveyor system :and" turn: ninety degrees (90) 3 or :one

hundred eighty degrees (180) depending upon the length of the "boards, in order, to place said" f boards on' the feeding. conveyor of the-glue-press,

which is a cumbersome, 1 tediousyand tiresome f-Th'erefore, one object 1 of my present; invention is to provide a novel and improved combinatione of such a glue-applying mechanism and a feed- [ing conveyor for a; glue press; so that movement of the glue-coated boards by the take-off portion of the glue-applying mechanism, ean-be automatically stopped in predeterminedfrelation to the feeding conveyorof-thegl-uepressand the Y boards can'be slid manually laterally from said take-off' portion and deposited by =gravity-onto said feeding conveyor, thereby reducing 'the time,

'con-fusion and labor incident totransfer ofthe glue-coated boards to theglue press.

1 Further objects are -to providein apparatus pf the character described, novjeI =andimproyed means actuated by the boards {foryautomiticiilly --stopping the take-off portion or the glue-applying mechanism; and to. provide novel and impr'oved means for adjusting T said automatic cs'to'pping means tos .accommodate boards' of dif- 'ferentlengths.

"Other objects of? the invention are. to, provide a novel construction, combination and arrangement of. parts which shallbe simple and reliable,

and to obtain other...advantages and-results as will bel brought:'out;byt the; following description in conjunction with the accompanying drawings,

in which Figure 1' is aztopt plan view .of' onelend portion omhe apparatussconstructed in; accordance. with I the invention;

i-Figure: 1a is a plan. view of the. other end por- =tion of the apparatus. beyond .the dot .and: dash lineX-PX of'Figure 1;

Figure 2 is a side elevational view ofa portion of theapparatus shown in Figure 1;

Figure 2a -tis a side elevational view. of; a portionmof the-apparatus .shown .in Figure 1a;

Figure' 3 :is an end .elevational view of .the apparatus, .observing .the same from the plane of Figure egis. a transverse vertical sectional view,

onthelineA-J of Figure 1;

.Figure -S is aasimilar view, on the line 5+5 of Figure 1;

Figure 6 is a' fragmentary vertical longitudinal sectional view, on the line 6--B of Figure 1 Figure '7 is a transversevertical sectional view,

-onthe line 1- 1 of Figure 1;

Figure-{8 isa. yertical sectional view, .on the line8- -8of Figure "7;

1 Figure 9 is-an enlarged fragmentary horizontal sectional viewoflthe mounting lbracket for the pawllpin of the clutch mechanism;

-Figure 10 is a fragmentary top plan view of a .i modified mount for -the stoppinglever. of'the conveyor system;

Figure ll is a front elevational view. thereof,

" and Figure 12. .is .a--side:. elevationa1= view. of said mount'.

"In; generaLiithez.apparatus includes .a glue-apnplying mechanism: which 1 comprises a conveyor system. having anfeed or loadingportionxA:and. a :take-ofi orhnloading. portioniB, thelattenbeing juxtaposed tontheieeding conveyor mechanism C 011a glue press. tzThefeed andt'a'kee ofi portions A and B are horizontally spacedapartandi a glueapply-ingun'it Dis interposed between them.

The conveyor -system' in'cludesa frame having siddbars' I which-are connected by cross-bars '2, -and the fedingportionA includes two shafts 3 and 4 journaled in the frame and each carrying a pair of sprockets 5 over which pass endless chains 6. Cross-bars I are secured to and extend transversely between the sprocket chains 6 to support boards to be coated, said bars preferably having thin outer edges to ensure minimal contact with the boards.

The take-off portion B similarly includes shafts 8 and 9 journaled in the frame and carrying sprockets ||l over which run sprocket chains H which carry bars I2 similar to the bars I. Preferably, the feed portion and the take-off portion of the conveyor system are so arranged that the upper edges of the bars I and I2 on the upper reaches of the chains will be in substantially the same horizontal plane.

The glue-applying unit D includes a glue applicator roll l3 also journaled in the side bars I of the frame, a glue pot l4 and a doctor roll IS. The glue pot is removably supported on the frame by rods 5 removably inserted through apertures in transverse bars or hangers H which are welded or otherwise suitably secured to the undersides of the side bars of the frame. Preferably, one end of each of the rods is screw threaded to fit a threaded opening in the corresponding bar while the other ends of the rods have finger pieces or knobs l8. Preferably, a jacket IS with inlet and outlet openings and 2| is provided on the glue pot for the circulation of heating or cooling medium to warm or cool the glue within the pot. The pot also has a partition 22 formed with an aperture 23 to provide a well into which extends a vertical tube 24 that depends from a socket 25 in which is supported a suitable supply container 28 for the glue. With this construction, a uniform level of glue in the pot will be assured.

In normal operation of the apparatus, the glue applicator roll I3 dips into the glue in the pot so that the periphery of the roll picks up some of theglue as the roll rotates, and the doctor roll |5 controls the thickness of the film or layer of glue on the roll l3. The doctor roll is provided with mounting means whereby its position with respect to the roll I3 may be changed, and as shown, the doctor roll is mounted in swinging bearings 21 which are pivotally mounted in the respective frame bars I by means of screws 28 each of which has one end thereof threaded into an aperture in the corresponding arm and has an enlarged knurled head in its other end for ease of operation. Preferably, resilient scrapers |4a are secured to the end walls of the glue pot to engage the ends of the glue roll l3, both for preventing accumulation of glue on the ends of the roll and also for centering the glue pot laterally of the frame. The bars I! position the glue pot longitudinally of the frame. For adjusting the doctor roll two adjusting screws 29 are mounted in blocks 30 on the frame bars I, one at each side of each of the swinging bars 21, whereby the position of the doctor roll can be micrometrically adjusted and the amount of glue on the roll |3 can be precisely controlled or varied.

This construction also permits easy and quick removal of the doctor roll and the glue pot for cleaning or inspection. To remove the doctor roll, it is merely necessary to unscrew the screws 28 until their shanks are withdrawn from the apertures in the bearings 21,-whereupon the doctor roll and the bearings can be lifted vertically upwardly from between the frame bars I without disturbing or altering the seating of the roll which was eifected by the adjusting screws 29.

The glue pot It can be readily lowered and removed by unscrewing the rods IB and pulling them from beneath the glue pot.

The glue-applying roll is journaled in bearings 3| in the side bars I, so that the highest point on its periphery projects slightly, for example, threesixteenths (T g) inch to one-fourth (#1) inch, above the top edges of the cross-bars and l2, and the shaft of the glue roll |3 carries a gear 32 which meshes with a pinion 33 on the shaft of the doctor roll whereby the doctor roll can be 7 driven from the glue-applying roll.

In accordance with the invention, the glueapplying roll is driven so that its periphery travels at the same speed as the feed and takeoff portions of the conveyor mechanism, and as shown, the shaft of the glue-applying roll projects beyond one of the frame bars and has a pulley 34 connected by a belt 35 to a clutch element 36 which is rigidly secured, as by bolts 31, to a gear 38 which is mounted for free rotation on the conveyor shaft 8 that is journaled in the frame bars I and 2. The gear 38 meshes with a driving pinion 40 on a driving shaft 4| also journaled in the frame and having a belt and pulley connection 42 with the shaft 43 of an electric motor 44 which is suspended in a bracket 45 from the underside of the frame. The conveyor shaft 8 is driven from the drive shaft 4|, pinion 4D and gear 38, and through the clutch element 36 and a cooperating clutch member 39 drives the take-off portion of the conveyor system. The feed portion of the conveyor system is driven through a sprocket 46 on the shaft 8 over which runs a chain 41 which also is connected to a sprocket 48 on the conveyor shaft 4.

In normal operation of the machine, when the motor is running, the feed portion A and the take-away portion B of the conveyor system, and the glue-applying roll |3 are driven in the same direction so as to carry objects, such as boards placed on the feed portion of the conveyor, into contact with and over the glue-applying roll and thence onto the take-away portion of the conveyor which carries the boards to a discharge point. A separator rail 49 extends from the entrance or feeding end of the feed portion A to a point adjacent the glue-applying roll and outwardly beyond one end thereof so that a series of boards 50 may be placed in side by side relation on the bars 7 of the feed portion with another board 5| at the outside of said separator rail, whereby all of the boards except the one outside said rail will have glue applied theretoby the glue-applying roll l3. Generally, these boards are utilized to form one complete panel in a glue press, and the unglued board 5| produces one unglued joint when the edges of successive boards are passed against each other in the gluing operation. Therefore, each time a dry or unglued joint occurs it interrupts the production of a continuous ribbon of glued boards and thus determines the width of each glued panel. As shown in the drawings, there is a separator rail at each side of the feed portion of the conveyor. To facilitate movement of short unglued boards from the feed portion to the take-away portion of the conveyor one or more idler rollers 11 may be provided.

The operator may take a group of boards sufficient to make one composite panel and place them on edge on the cross-bars l with oneboard 5| outside the separator rail 49, as bestshown in Figures 1 and 5 by dot and dash lines. The movement of the cross-bars carries the boards message-7'4 alohg :un'til they contact the glue" roll a I 3 which, 'fbecause it projects above the cross-bars, "carries the =-boara towara the {glue roll and delivers "tl'iinf-toftheidssbfis l2 of the take-off'portio CB. W ith thisarrangement,theroll l3-acts as 'an 'integral part of the conveyorsystem and ensures complete application of glue not only because" the weight of the boards presses them down onto the roll bu t because the roll construction and disposition "applies glue even to hollow ltjointed boards which-are boards with a longitudinal curvature. Also, because the peripheral speed oL-theglueroll is the same as the linear speed ofniovment of 'tlieconveyor portions A andB there is no relative movement of the'con- 'f'v'eyor bars and the boards noris there any wiping f action' between the surfaceof the glue'fro'll and the 'edges of the boards, so thatan evenapplicaion ofiglue to the boards is ensured andithe pos- I ibilitly"of'wiping or: removal P of the glue from theboa'rds or uneven thickness of the glue coat- }{ihg-is obviated, as is also accumulation 'of" glue on: the conveyors.

i system 'the forward ends-of'the boards strike a stop arm 52 which actuates the clutch 36, 39 to stop the feed and take-away conveyors. As shown, this stop arm is secured in a post 53 which may be pivotally mounted in any one of a plu rality of openings 54 in a supporting bracket 55 which is secured to one of the side bars I of the frame. One end of the stop arm overlies the upper reach of the take-off conveyor portions slightly above the tops of the bars 12, while the other end of the stop arm projects beyond the post 53 and has adjustably connected thereto by a screw 56, a push rod 51 which is pivotally connected at 58 to a pawl pin 59 which cooperates with a ratchet 60 that has an opening 62 in which is pivotally fitted an actuating arm 63 of a clutch dog 64 that is pivotally mounted on the clutch member 39 to connect and disconnect the latter from the clutch element 36 which has notches 65 to interlock with the dog 64. A spring 60a normally influences the ratchet 60 to hold said dog engaged with the element 36. The pawl pin 59 is slidably mounted in a bracket Bi and is normally influenced away from the ratchet 60 by a spring 66. When the ends of the boards on the take-off conveyor portion strike the stop arm 52, the latter is swung so as to actuate the push rod 51 and cause engagement of the pawl pin with the ratchet 60, whereby the dog 64 is disengaged from the clutch element 36. The clutch member 39 is thus stopped and being fixedly connected on the shaft 8, both the feed and take-off conveyor portions are also stopped. However, the glueapplying roll may continue to rotate to keep the glue agitated. When the boards are removed from engagement with the stop arm, the conveyor portions will be automatically started.

The take-off conveyor portion and the stop arm 52 are so related to the receiving opening or the loading station of a glue press that the glue-coated boards will be automatically stopped in proper position for easy manual sliding of the boards from the take-off portion and deposit thereof into said loading station or receiving opening upon a conveyor mechanism or a loading table. In Figures 1a, 2a and 3 of the drawings, the reference character E represents the frame of a glue press or other machine, for example, a glue press of the type disclosed in United States Patent No. 2,408,064, which includes the conveyor mecha- *nism; C. "Any suitable type of conveyor mecnanism may be'used, but' as' shown conveyorch'ains 61 extend from the receiving endof the glue press and pass over sprockets 68 on a shaft 69 which may be driven" inany suitable manner asby a chain and sprocket drive' 10, A receiving):guide frame I l 'iproje'cts diagonally upwardlyfrom the conveyor chains to a point 'inspaced relation to oneiside bar" I of the frame oftheiiglue 'applyinthe direction ofth'e' arrow' in Figure 3'at right "angles 'to the 'directionof travel of the' take-off conveyor portion, and are disposed directly beneath the latter.

-In operation, the stop arm 52 is set by'adjusting-its'post 53 in' the properopen'ing' 54 so that' 'the gluef-coated'boards" will be stopped with thwhole length thereof above the conveyor chains 61. "Thereupon; the operator standingalcngside ithe receiving guide ll will reach inwardly and pull the glue coated boards toward him over the guide arms 12 and then drop the boards by gravity onto the receiving guide which will carry them to the conveyor chains 61. These chains will then convey the boards to the pressing and drying mechanism of the glue press E. It will thus be seen that the boards can be placed on the feed portion of the glue-applying mechanism and the gluecoated boards can be removed from the take-oil! portion of the glue-applying mechanism about as fast as an operator can handle the boards, and the glue-coated boards can be deposited as fast as the operator can handle them directly into the feeding conveyor mechanism of a glue press or the like.

Figures l0, l1 and 12 show a modification of i the adjustable mounting for the stop arm 52. Here the post 53 is rotatably mounted in a socket 14 which is carried by a U-shaped bracket 15, the arms of which embrace one of the side bars I and are tightly clamped in frictional contact therewith by a bolt 16. By loosening the bolt 16 so as to relieve the pressure of the arms of the bracket on the side bar I, the bracket 15 can he slid along the side bar to locate the stop arm in the desired position.

While I have shown the machine as embodying certain details of construction, it should be understood by those skilled in the art that many changes can be made in the machine, and other relationships of the glue-applying mechanism and the feeding conveyor mechanism of the glue press or the like can be utilized, all within the spirit and scope of the invention.

Having thus described the invention, what I claim is:

1. A glue-applying machine comprising a glueapplying unit having a movable glue-carrying surface, a conveyor system for objects to be glued having feed portions and take-cit portions disposed at opposite sides of said glue-carrying surface and movable in the same direction so that said objects are moved into and out of contact with said glue-carrying surface by said feed and take-ofi portions, respectively, driving means for both said conveyor portions, mechanism including a movable part actuated by said objects on said take-off portion for automatically stopping said conveyor portions, and means mounting said movable part for adjustment relatively to said take-off portion to cause said stopping at a selected point.

' 2. The glue-applying machine as defined in claim 1, with the addition of means normally influencing said mechanism to cause starting of said conveyor portions when said objects are moved out of engagement with said movable part.

3. Apparatus of the character described, comprising a frame, a glue-applying unit thereon, a conveying system including feed and take-off portionson said frame at opposite sides of said glueapplying unit for moving to and from said glueapplying unit, driving means for said conveying system, mechanism to stop said driving means including a movable part to be engaged and actuatedzby objects on said take-01f portion, means mounting said part on said frame for adjustment longitudinally of said take-off conveyor portion.

4. Apparatus of the character described, comprising a frame, a glue-applying unit thereon, a conveying system including feed and take-off portions on said frame at opposite sides of said glueapplying unit for moving to and from said glue.- applying unit, driving means for said conveying LLOYD QUICK.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number I Name Date 163,598 Marsh May 25, 1875 229,703 Hillard July 6, 1880 677,343 Delaney July 2, 1901 1,348,492 I-Iaggerty Aug. 3, 1920 1,929,897 Merritt et al Oct. 10, 1933 1,982,004 Humphrey et a1 Nov. 27, 1934 1,996,535 Beck Apr. 2, 1935 2,175,760 Pierson Oct. 10, 1939 2,191,070 Cone Feb. 20, 1940 2,402,633 Johnson et al June 25, 1946 2,409,777 Maurer Oct. 22, 1946

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