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Патент USA US3062189

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Nov. 6, 1962
3,062,179
J. P. LOPEZ
APPARATUS FOR APPLYING GLUE T0 BOX BLANKS
3 Sheets-Sheet l
Filed Nov. 12, 1958
INVENTOR.
JOHN P LOPEZ
BY
.
M‘WW
ATTORNEYS.
'
Nov. 6, 1962
3,062,1 79
J. P. LOPEZ
APPARATUS FOR APPLYING GLUE TO BOX BLANKS
Filed Nov. 12, 1958
3 Sheets-Sheet 2
INVENTOR.
JOHN E LOPEZ
MIW vM
Nov. 6, 1962
3,062,179
J. P. LOPEZ
APPARATUS FOR APPLYING GLUE TO BOX BLANKS
Filed Nov. 12, 1958
FIG. 4
3 Sheets-Sheet 3
F/ 6“. 5
INVENTOR.
JO/l/Y I‘? AOPEZ
BY
QWL
WVW
3,062,179
United
Patented Nov. 6, 1962
2
1
and straddle said bushing 26, the washer 35 being seated’
against said shoulder 34.
3,062,179
The bushing 26 and the washers 35, 36 are keyed to
APPARATUS FOR APPLYING GLUE T0
BOX BLANKS
the shaft as at 37 and a nut 38 is screwed on the threaded
John P. Lopez, West?eld, N.J., assignor to Universal Cor
end 39 of said shaft.
rugated Box Machinery Corporation, a corporation of
New York
Thus, when the nut 38 is tightened, the shaft 32 will
be retained in adjusted position as the washer 35 and the
?ange 27 of the bushing 26 will clamp the vertical leg 23
of the bracket 24 therebetween.
Filed Nov. 12, 1958, Ser. No. 773,469
5 Claims. (Cl. 118—250)
This invention relates to the art of glue applying equip 10
ment, more particularly of the type to apply glue to a
Rotatably mounted on the outer end of shaft 32 is a
presser roller 41 which has a resilient periphery 42, that
is vertically aligned with the knurled periphery of roller
11, suitable bearings 43' being provided to afford ready
moving surface.
It is among the objects of the invention to provide a
rotation of said roller 41.
In the illustrative embodiment shown, the equipment
is used to apply glue to the undersurface of the connector
and may readily be disassembled for cleaning, which will
?ap 43 of a box blank B. To guide the flap 43 of the
apply a predetermined quantity of glue to a moving sur
box blank B to be glued, between the rollers 11, 41, the
face, which will automatically clean off glue at the side
casting 17 has an inclined outwardly extending ledge 45
edges of the transfer roller thereof and return such glue
back into the unit, and which may readily be adjusted 20 desirably formed integral therewith over which the ?ap 43
will ride to be presented to the space between said rollers
without disassembly to set the quantity of glue to be.
11 and 41.
applied as desired.
Means are provided to apply glue to the transfer roller
According to the invention these objects are accom
glue applying equipment of the above type which is rela
tively simple in construction, dependable in operation
15
plished by the arrangement and combination of elements
hereinafter described and particularly recited in the
25
11 as it rotates. To this end, the casting 17 has an out
standing ledge 46 desirably formed integral therewith on
the side of the roller 11 opposed to the guide ledge 45.
Depending from the ledge 46 are a pair of spaced parallel
claims.
In the accompanying drawings in which is shown one
arms 47 and 48 which de?ne a yoke between which is
or more of various possible embodiments of the several
positioned a hub 49 rising from a boss 50 at the top of
features of the invention,
30 a glue pot 51.
FIG. 1 is a side elevational view of the unit,
Extending through aligned openings in the arms 47, 48
FIG. 2 is a sectional View thereof taken along line 2-2
and the hub 49 is a headed stud 52 which has an annular
of FIG. 1,
groove 53 in its nose end aligned with a transverse bore
FIG. 2a is a detail sectional view of another embodi
54 in the arms 48. Thus, when a pin is inserted through
ment of the presser roller,
FIG. 3 is a sectional View taken along line 3-3 of 35 said bore 54 across said groove 53, the glue pot will be
securely yet pivotally mounted between said arms 47, 48.
FIG. 1,
Desirably
a vertical bore 55 extends through said ledge
FIG. 4 is a sectional view taken along line 4——4 of
46 and arm 48 and is in communication with said groove
FIG. 5 is an end view taken along line 5—5 of FIG. 1, 40 53 for lubrication thereof.
To adjust the pivotal position of said glue pot 51, the
and
ledge
46 has vertical tapped bores 56, 56' aligned with
FIG. 6 is a plan view of a box blank in open position.
the ends of the boss 50 as shown in FIG. 1.
Referring now to the drawings, the gluing unit de
The bore 56 mounts an externally threaded sleeve 57
sirably comprises a glue transfer roller 11 having a flat
which may be retained in desired position by a nut 57'.
periphery 12 which preferably is knurled to prevent the
glue applied thereto from being discharged as the roller 45 The lower end of the bore of the sleeve is of reduced di
FIG. 1,
rotates.
As shown in FIG. 2, the roller 11 has a hub 13 secured
to a horizontal drive shaft 14 journalled in a bearing
block 15 secured to the vertical frame 16 of the equip
ment in which the gluing unit is incorporated.
Mounted on the frame 16 is a support 17 illustratively
a casting having a vertical wall 18 with a plurality of
ameter as at 58 to de?ne a shoulder that serves as a stop
for the head of a plunger 59, the outer end 59' of which
reacts against one end of'the boss 50. The plunger is
urged outwardly by a coil spring 60 positioned in the
50 sleeve 57, tension on the spring being set by a screw 60'.
The bore 56' carries a screw 79, the head of which
reacts against the other end of boss 50. The screw 79
may be rotated at its head end to pivot the glue pot as
elongated slots 19 therein through which screws 21 extend
desired, against the tension of coil spring 60 and locked
securely yet adjustably to retain the support on the
in set position by tightening nut 79’.
55
frame 16.
As shown in FIG. 1, the glue pot has a top wall 61 on
The support 17 has a ledge 22 extending laterally out
which the boss 50 is mounted, a rear wall 62 and a bot
ward therefrom which mounts the horizontal leg 23 of an
tom wall 63, the latter being downwardly inclined with
L-shaped bracket 24, the latter having an opening 25
respect
to rear wall 62, said walls and the boss desirably
through which extends a bushing 26, said bushing being
60 being formed from a single casting.
rotatably mounted in said opening.
A?ixed to the side edges of the walls 61, 62 and 63 as
The bushing 26 has an annular ?ange 27 at one end
by
screws 64 are side plates 65 and 66, the spacing be
with a radial threaded bore 28 to receive the correspond
tween said walls being such that a portion of the‘ front
ing threaded end of a control rod 29 which serves to
edges 67 thereof straddles the adjacent side edges 68 of
rotate said bushing.
The bushing 26 has a bore 31 therethrough displaced 65 the transfer roller 11.
As is shown in FIG. 1, the free erids 69, 71 of the top
from its axis as shown in FIG. 2 to serve as the eccentric
and bottom walls 61, 63 are spaced from the front edges
mount for a stud shaft 32 which extends therethrough.
67 of the plates 65, 66. Aflixed as by screws 72 to the
The shaft 32 has a reduced diameter portion 33 at the
undersurface of bottom wall 63 and extending longitu
extremity thereof extending through the bushing bore
dinally therefrom is a plater73 preferably of nylon or
and which de?nes an annular shoulder 34. A pair of
Te?on, the free end 74 of which is beveled as at 75 to
washers 35, 36 encompass said reduced diameter portion
de?ne a relatively sharp edge extending the width of the
3,062,179
.3
~
periphery of the transfer roller 11,, the front edges 67 of
the plates 65, 66 extending beyond said edge 74.
The upper edges 75 of the plates 65, 66, between the
front edges 67 thereof and the boss 50, are desirably cov
ered by a plate 76 and each of the side plates 65, 66 has
an elongated downwardly inclined recess 77 in its inner
surface having its mouth 78 extending from the front edge
67 of the associated plate at the top thereof.
Means are provided to charge the glue pot 51. To
this end the plate 66, for example, has an opening 81 in
4
Thereupon, as the periphery of the roller 11 is sub
merged in the glue in the glue pot 51, it will pick up ad
ditional glue, the thickness of the layer being determined
by the position of the edge 74 of plate 73.
The embodiment of the presser roller 42' shown in
FIG. 2a comprises a hub or sleeve 95 rotatably mounted
on a shaft 32 by means of bearings 43'. As the eccen-V
tric support for shaft 32 is identical to that shown in FIG.
2, it will not be described.
The hub 95 adjacent its outer end has two spaced par
which is secured one end of a laterally extending pipe 82,
allel ?anges or discs 96 preferably formed integral there
the outer end of which has an elbow 83 secured thereto,
the ‘vertical leg of which has a conical receptacle 84 ris
with which serve to retain the ?ap 43 against the transfer
ing therefrom.
roller 11 in the same manner as the presser roller 42 ex
cept that only the peripheries of the discs 96 exert pres
Secured to the frame 16 of the equipment is an air 15 sure against the ?ap 43.
tight reservoir 85 which has a nipple 86 at its lower end
With this embodiment if any glue should be deposited
to which a valve 87 is secured, a feed pipe 88 extending
on the peripheries of the discs 96 during initial start up
from said valve into the receptacle 84 and the nipple 83
of the equipment or during subsequent operation, since
to near the bottom of the latter.
they are relatively narrow, but little glue would be trans
In order to determine the level of the glue in the glue 20 ferred to the top of the ?aps 43 which would have no seri
pot 51, the plate 66 has a boss 88’ on its outer surface
ous effect such as causing superimposed box blanks to
which has a downwardly inclined threaded bore directed
adhere.
into the interior of the glue pot 51, a sleeve 89 extend
With the equipment above described, the quantity of
ing from the bore partly into the glue pot. A dip stick
glue applied to the transfer roller 11 may readily be
91 is provided having a threaded knob 92 at its outer end 25 metered by a simple adjustment which will maintain
which may be securely retained in the threaded bore and
constant the quantity of glue applied to the roller 11.
readily removed to withdraw the dip stick 91 so that the
By reason of the recesses 77 in the side plates of the
level of the glue may be determined.
glue pot, the glue adhering to the side edges of roller 11,
The unit is mounted so that the flap 43 of the open box
which is not applied to the ?ap 43, will be removed there
blank B advanced by a suitable conveyer such as the type 30 from, preventing build-up of layers of glue which would
shown in co-pending application Serial No. 745,979, ?led
July 1, 1958, will ride up the ledge 45 to be positioned
prevent proper application of glue to the ?ap 43.
Although the equipment has been illustratively de
between rollers 11 and 41.
scribed with respect to its use in applying glue to the
To set up the equipment for operation, the reservoir 85
connector flap of a box blank, it is within the scope of
is charged with a suitable glue and then closed. When the 35 the invention to apply glue ‘to any moving surface.
valve 87 is opened, the glue will ?ll the receptacle 84 to
As many changes could be made in the above con~
substantially the level of the lower end of feed pipe 88
struction, and many apparently widely different embodi
and flow through pipe 82 into the glue pot 51 to charge
ments of this invention could be made without departing
the latter, the level of the glue being automatically main
from the scope of the claims, it is intended that all matter
tained.
contained in the above description or shown in the ac
The screw 79 is adjusted to pivot the glue pot 51 so that
companying drawings shall be interpreted as illustrative
the edge 74 of plate 63 is at a distance from the periph
and not in a limiting sense.
ery of the transfer roller 11 to provide the desired quan
Having thus described my invention, what I claim as
tity of glue thereon.
new and desire to secure by Letters Patent of the United
By reason of the viscosity of the glue, substantially 45 States is:
none will drip between the periphery of the roller 11 and
1. Glue applying equipment comprising a glue trans
the edge 74 of plate 63 and by reason of the close toler
fer roller, a presser roller associated therewith, said trans
ance between the plates 65, 66 and the side edges 68 of
fer roller being of diameter considerably greater than
the roller 11 therebetween, substantially no leakage will
that of said presser roller, means rotatably mounting said
occur at such regions. In the event that there should be 50 rollers, means to drive said transfer roller, a glue pot p0‘
some slight leakage of glue, it will be collected in drip
pan 90.
,
The presser roller 41 is adjusted by the rod 29 so that
the distance between the rollers 11 and 41 will be suf
?cient to effect advance of the ?ap therebetween, yet
without unduly compressing such ?ap and squeezing off
the ‘glue applied to the undersurface thereof.
As the roller 11 is rotated at the same rate of speed as
the box blanks are advanced, the periphery of the roller
11 will advance through the glue pct 51 and the edge
74 of plate 73 will provide a layer of glue on the periph
ery of the roller 11 of the desired thickness. As the
roller 11 continues its rotation, it will advance such glue
until it reaches the undersurface of the ?ap 43 which
will be pressed by the roller 41 ‘against such roller 11 to
apply glue to the undersurface of the flap 43 so that the
latter may be secured to the panel 92’ of the box blank
when the latter is folded by the equipment described in
said patent application above-identi?ed.
As the roller 11 continues its rotation and passes be
tween the side plates 65, 66 of the glue pot 51, any glue
adhering to the edges 68 of the roller 11 will be scraped
therefrom as such edges 68 move by the edge 92 of the
recesses 77 in said plates. the glue thus scraped off being
restored to the glue put 5-1.
sitioned laterally of said transfer roller. and having a
mouth with a pair of spaced parallel walls adapted to
straddle the side edges-of a relatively small portion of
the periphery of the transfer roller with relatively little
clearance therebetween, means to meter the quantity of
glue carried by said transfer roller from said glue pot
upon rotation‘of said transfer roller said metering means
being spaced from said presser roller by an arcuate dis
tance of greater than 180 degrees and means on the inner
surfaces of the spaced parallel walls of the glue pot to
remove glue adhering to the side edges of the periphery of
the transfer roller as the latter rotates and to guide such
glue along said Walls of the glue pot into the interior
thereof.
_ 2. The combination set forth in claim 1 in which the
inner surface of each of the side walls of the glue pot has
a downwardly inclined recess extending from the upper
edge of the mouth thereof, the lower side edges of the
recess serving to remove the glue adhering to the side
edges of the periphery of the transfer roller as the latter
rotates, the recesses conveying such removed glue into the
interior of the glue pot.
3. The combination set forth in ‘claim 1 in which the
presser roller is mounted on an axis parallel to the axis
75 of said transfer roller, means to effect relative movement
3,062,179
5
between said rollers to vary the spacing therebetween, said
means comprising a rotatably mounted bushing, having
a shaft extending therethrough on an axis displaced from
the axis of the bushing and parallel thereto, said presser
roller being mounted on said shaft, whereby upon rotation
of said bushing, the presser roller will be moved toward
and away from the transfer roller and means to lock said
presser roller in set position with respect to said transfer
roller.
4. The combination set forth in claim 3 in which said 10
Presser roller comprises a plurality of spaced parallel
discs.
5. The combination set forth in claim 1 in which said
glue pot has a bottom wall having a free edge extending
transversely across the glue pot and spaced from the 15
periphery of said transfer roller, a plate a?ixed at one end
to the bottom wall of said glue pot extending longitud
inally thereof toward said transfer roller and positioned
6
between the parallel side walls of said glue pot the free
end of said plate being positioned adjacent the periphery
of said transfer roller and extending transversely there
across to de?ne a passageway for the glue picked up by
the transfer roller as it rotates through the glue pot, the
means to meter the quantity of glue carried by the transfer
roller regulating the distance between the free end of said
plate and said transfer roller.
References Cited in the ?le of this patent
UNITED STATES PATENTS
188,670
863,429
1,099,551
1,248,314
1,412,471
1,423,567
Poole ________________ __ Mar. 20,
Norris ______________ __ Aug. 13,
Keith ________________ __ June 9,
Grahl _______________ __ Nov. 27,
Bombard et a1 _________ __ Apr. 11,
Bombard et al _________ __ July 25,
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