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Патент USA US3089706

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May 14, 1963
c. R. HOLLIS
-
3,089,696
SHEET FEEDING APPARATUS
Filed April 14, 1961
5 Sheets-Sheet 1
L__2
“M.y4“
37
L ____ _ _4
INVENTOR.
CLINTON R.HOLLIS
FIG.|
Mal/[LAW
ATTORNEY
m
May 14, 1963
c. R. HOLLIS
3,089,596
SHEET FEEDING APPARATUS
Filed'April 14, 1961
‘
s Sheets-Sheet 2
P.
FIG.2
INVENTOR.
CLINTON R.HOLLIS
ATTORNEY
May 14, 1963
c. R. HOLLIS
. 3,089,696
SHEET FEEDING APPARATUS
Filed April 14, 1961
air
32
3/
5 Sheéts-Sheet :5
v 55
33
INVENTOR.
CLINTON R.HOLL|S
[Hawk
ATTORNEY
May 14, 1953
<_:. R. HOLLIS
3,089,696
May 14, 1963
C. R. HOLLIS
3,089,696
SHEET FEEDING APPARATUS
Filed April 14, 1961
5 Sheets-Sheet 5
INVENTOR.
CLINTON R.HOLLIS
ATTORNEY
hate
1
Patented May 14, 1963
2
the wall of the pipe by which the cup and pipe interiors
3,089,696
SHEET FEEDlNG APPARATUS
are pneumatically joined, and (6) an arbor at least par—
tially rotatable within second journal means, brackets ?x
_
Clinton R. Hollis, Camden, Arln, assignor to International
Paper Company, New York, NJEL, a corporation of
New York
edly mounted on the arbor and on the pipe, and a con
necting rod between the two brackets. The other end
of
the pipe can be closed or, preferably, intermittently
Filed Apr. 14, 1961, Ser. No. 103,162
openable by means of a gate, valve, etc. The stack sup10 Claims. (Cl. 271-49)
port mechanism is, broadly, comprised of an arcuate
This invention relates to the handling of columns of
blade and blade drive means and, in a preferred version,
piled ?exible materials. More particularly, it relates to 10 of an arcuate blade, the edge of which has a tapered rise,
the separation of one or more ?at sheets or tubes from
and a spindle at least partially rotatable Within third
a stack of a number of them without adversely affecting
journal means and on which the blade is ?xedly mounted,
the alignment of the stack or of the remaining individual
the arbor of the vacuum sub-assembly, and ?rst drive
sheets or tubes.
transmission means between the spindle and the arbor.
It has been found that, with the advent of lighter and
Similarly, the stack clamping mechanism is comprised of
?exible materials such as the extensible papers useful in
a lever and lover drive means and, preferably, the
the production of multiwall bags, the Withdrawal of an
clamping drive means include a mandrel at least partially
individual collapsed tube of such material from a pile of
rotatable within four journal means and on which the
like tubes, particularly from the bottom of the pile, gives
clamping lever is ?xedly mounted, the spindle of the
rise to a novel problem. Such a withdrawal, especially
stack support sub-assembly, and second drive transmis
when it is repeated with each descent of a fresh tube to
sion means between the mandrel and the spindle. The
the bottom of the pile, causes the next following or all
housing, in turn, provides sites, e.g., bearing seats, for the
of the remaining tubes to creep forward in the direction
?rst, third, and fourth journal means.
of withdrawal and, thereby, to lose its or their alignment
In use, the feeder attachment housing is positioned
in the stack or pile. Such withdrawals and creeping,
along the side of and toward the back end of the flat bed
then, portend and ultimately bring about interruptions of
plate which generally supports the stack of collapsed
the desirably continuous ?ow of the tubes to other auto
matic or mechanical processing equipment and these in
tubes.
The corner of the bed plate nearest the attach
ment is modi?ed with a rabbet, preferably obtusely
angled, over which the corresponding back corner of the
terruptions can disrupt production schedules when they
occur during, for instance, the movement of the tubes
from the tube former to a bag closure former or
stack can extend and in or below which the stack can
be contacted on its under surface by the vacuum com
municating means, e.g., cup, of the attachment’s vacuum
'bottomer.
It is an object of the present invention to perfect the
sub-assembly and in which the attachment’s stack support
mechanism can operate effectively. By so positioning
withdrawal of ?at sheets or tubes from stacks or piles of
the same and to eliminate creepimI and misalignment in 35 the housing, the stack clamping sub-assembly is properly
and of the stacks or piles from which the sheets or tubes
placed with respect to the stack on the bed plate.
are being withdrawn. It is a further object to secure the
For a clearer understanding of the invention, reference
separation and withdrawal of one or more of the sheets
should be had to the attached drawings in which:
or tubes from the bottom of a stack or pile of the same
FIGURE 1 is a plan view of the feeder attachment of
and the retention of the remaining sheets or tubes in a
the invention juxtaposed with a multiwall bag bottomer
bed plate;
,
position from which they cannot creep. Again, it is an
object of the present invention to provide a simple, as
FIGURE 2 is a front end view of the device of FIG
URE 1 taken along lines 2—2;
well as economical, device suitable for ordering the
feeding of ?at, multiwall bag tubes into a bag bottomer
FIGURE 3 is a side View of the device of FIGURE 1;
such as the well-known Coty bottomer from columns of
FIGURE 4 is an isometric view of the device of
FIGURE 1;
such tubes.
A feeder attachment for a multiwall bag bottomer
. FIGURE 5 is an isometric view of the housing sub
assembly of the device of FIGURE 1;
made in accordance with the present invention is an as
FIGURE 6 is an isometric View of the device of
sembly of four sub-assemblies, i.e., a vacuum mecha
nism, a stack support mechanism, a stack clamping
FIGURE 1 together and in juxtaposition with a multiwall
mechanism, and a housing for portions of such mecha
bag bottomer, its bed plate, and a stack of piled flat bag
tubes thereon; and,
nisms. These four sub-assemblies cooperate with one
another continuously and with a column of piled col
lapsed bag tubes and a bed plate which gives the column
its principal support intermittently or in a timed re— 55
lation.
Broadly, the vacuum sub-assembly of the attachment
is comprised of (1) a vacuum generating means, (2) a
movable vacuum arm means, (3) ?rst ?uid connecting
FIGURE 7 is a side view of a vacuum releasing mecha
nism for and of the attachment of FIGURE 1.
.As best depicted in FIGURES 1 to 3, the vacuum
sub-assembly of the attachment includes suction cup 10
?xedly mounted on hollow arm 11.
Holes 12 in the
base of cup 1%) lead through the mounting to the interior
of pipe 11. One end, not shown, of pipe 11 is connected
means between the vacuum generating and arm means, 60 to the vacuum pump, also not shown, which creates the
(4) a movable vacuum communicating means, (5) sec
suction in cup 1%, while the other pipe end can be closed.
ond ?uid connecting means between the vacuum arm and
Between the cup mounting and the other end of the pipe,
communicating means, and (6) vacuum arm drive means
pipe 11 is bracketed by one end of rocker arm 13 which
and, in a preferred embodiment, it is comprised of (1) a
acts as a spoke to a hub (not shown) the axle 14 for
65 which can be seen journaled in bearings within member
suction pump or the like, (2) a pipe or tube at least par
tially rotatable about a hub having its axle within ?rst
36 of attachment housing 28 in a cut-away portion of
journal means, (3) an end of the pipe or a length of hose
FIGURE 1; The other end of rocker arm 13 is linked,
or the like by which the pipe interior and the suction
by means of ball joint 53 thereon, to connecting rod 15
pump are pneumatically joined, (4) a cup at its upper end 70 ‘and ‘ball joint 16 on bracket 17. Bracket 17 is, in turn,
open to the air and at its lower end ?xedly mounted on
?xedly mounted on drive arbor '18 which is journaled at
the arm, (5) holes through the lower end of the cup and
£9 in a portion of the frame of a multiwall bag tube
‘
3,089,696
3
4
bottomer. FIGURES 1 to 3 also show the juxtaposition
of the vacuum sub-assembly with bed plate 20 of the
bottomer in the area of rabbet 21 of such bed plate.
The stack support sub-assembly of the invention is
blade 22 having a tapered rise ‘from its leading edge 23,
above the tubes so clamped. This withdrawal can be
effected without an at?rmative releasing of the suction
in cup 11? vhen the vacuum equipment creating it is sus
ceptible of adjustment to a degree ?ne enough not to give
rise to excessive tensions in the tube material. But, where
such adjustment is not available or even where it is,
spindle 24 on which blade 22 is ?xedly mounted, arbor
13, and bevel gears 25 and ‘26 ?xedly mounted on spindle
it is either necessary or preferable to install intermittent
vacuum releasing means on the feeder attachment of the
24 and arbor 18 respectively. Spindle 24 is journaled
invention.
best depicted in FIGURES l to 4.
It includes arcuate
in attachment housing member 27, the bearings within
Broadly, the intermittent vacuum releasing subassem
which are shown in a cut-away portion of FIGURE 2.
As also shown in FIGURES 1 to 4, the stack clamping
mechanism includes lever 29, lever bracket 30 which
?xedly mounts lever 29 on mandrel 31, spindle 24, and
bly of the attachment comprises vacuum arm vent means,
third ?uid connecting means between the vacuum arm
and vent means, vent gate means, and gate opening
means. In the preferred embodiment shown in FIG
bevel gears 32 and 33 ?xedly mounted on mandrel 31
URES 1, 3, 4, and 7, they comprise the end 42 of pipe
and spindle 24, respectively. Mandrel 31 is journaled in
housing members 34 and 35, the bearings within which
11 not connected to the vacuum pump; portal plate 43
having an annular boss 44 on one side and in receipt of
are shown in several cut-away portions of FIGURE 1.
pipe end 42, a stud 45 having cap piece 51 and pin 46
Housing 28 and its members are, of course, best seen
on the other side, and a hole 50 therethrough and in
20 registry with the annular opening of boss 44; a pawl 47
in FIGURE 5.
The operation of the feeder attachment of the inven
mounted for rotation on stud 45 and over hole 50 in
tion is best understood by reference to FIGURES 3, 4,
plate 43; a dowel 48 a?ixed to pawl 47; a compression
and 6. Push rod unit 37 links arbor 18 with a power
spring 52 on stud 45 between pawl 47 and cap piece 51;
source for its rotational movement by means of driven
and, a tension spring 49 connecting pin 46 and dowel 48
bracket 38, driver bracket 39, and cam follower bracket 25 and passing around stud 45 and spring 52.
49. Preferably, push rod 37 is given an alternating or
The operation of the vaccum releasing sub-assembly
is as follows: when cup 10 moves downwardly by virtue
reciprocating motion by the power source (not shown)
and, thereby, imparts to arbor 18 a clockwise and then
of the counter-clockwise turning of rocker arm 13 (as
counter-clockwise rotation.
seen in FIGURE 3), portal plate 43 is also moved in a
A clockwise rotation of arbor 18 (as seen in FIGURE 30 generally counter-clockwise direction. This movement
3) imparts a left-to-right movement to bracket 17 and
brings the lower end of pawl 47 into contact with a por
tion of the bottomer frame 53 to which the whole feeder
connecting rod 15 (as seen in FIGURE 1). This, in turn,
causes rocker arm 13 and pipe 11 (as seen in FIGURE
attachment can be affixed and urges the pawl to rotate
3) to rotate in a clockwise manner about axle 14. As a
in a clockwise manner about stud 45 and to uncover hole
result, cup 10 moves upwardly through an arc of about 35 50 in plate 43 which leads to the end 42 of hollow vacu
60° into the area of rabbet 21 on bed plate 20 of the
um arm 11. Any such uncovering, of course, substan
tially releases the vacuum in arm 11, reduces the suction
bottomer and, somewhat before, into contact with the
under surface of stack 41 of collapsed bag tubes thereon.
in cup 10‘ and facilitates the withdrawal of that tube
to which cup 10 has been clinging into the tube bottom
This surface is exposed to this contact from below at
the outset when the back end corner of stack 41 is made 40 ing operation. Then, when the direction of rotation of
to extend over r-abbet 21.
Again, a counter-clockwise rotation of arbor 18 (as
seen in FIGURE 3) imparts a right-to-left movement to
rocker arm 13 is changed, the bias provided by spring
49 on dowel 48 of pawl 47 causes the pawl to re-cover
the hole in plate 43 and the vacuum in arm 11 and suc
tion cup 10 to improve for the next cycle of the attach
bracket 17 and connecting rod 15 (as seen in FIGURE
1). This causes rocker arm 13 and pipe ‘11 (as seen 45 ment’s operation in which the cup 10 and lever 29 are
raised and the blade 22 is horizontally withdrawn from
in FIGURE 3) to rotate in a counter-clockwise manner
beneath stack 41 by swinging through an arc of about
about axle 14. As a result, cup 10 moves downwardly
60°.
out of the area of rabbet 21, taking with it, because
What is claimed is:
of the suction therein, the bottom one of the tubes piled
1. A feeder attachment for a multiwall bag bottomer
50
in stack 41 (see FIGURE 6).
fed from a stack of ?at bag tubes having a vacuum sub
Now, as cup 10 is moved downwardly and arbor 18
assembly comprising a vacuum generating means, a mov
moves counter-clockwise (as seen in FIGURE 3), bevel
able vacuum arm means, ?rst ?uid connecting means be
gear 25, by virtue of its engagement with bevel gear 26
tween the vacuum generating means and the vacuum arm
on arbor 118, rotates counter-clockwise (as seen in FIG
means, a movable vacuum communicating means, second
URE 4). This turns spindle 24 and blade 22 in a simi
?uid connecting means between the vacuum arm means
lar direction and permits the horizontal introduction of
and the vacuum communicating means, and vacuum arm
blade 22 between the tube being held by cup 10 and
drive means; a stack support sub-assembly comprising an
the tubes remaining in stack 41 on bed plate 20. Blade
arcuate blade and blade drive means, the blade drive
22 is capable of moving in an arc of about 60° in this
manner. Further, as cup 10 is moved downwardly and 60 means including the vacuum arm drive means; a stack
clamping sub-assembly comprising a clamping lever and
spindle 24 turns counter—clockwise (as seen in FIGURE
lever drive means, the lever drive means including the
4), bevel gear 33 on spindle 24 and bevel gear 32 on
blade drive means; and, a housing.
mandrel 31 are turned counter-clockwise (as seen in
2. A feeder attachment for a multiwall bag bottomer
FIGURE 4). This movement imparts a counter-clock
fed from a stack of flat bag tubes having a vacuum sub
wise rotation to mandrel 31 and lever 29 a?ixed thereto
assembly comprising a vacuum generating means, a ro
and brings the lever down into contact with the side
tatable vacuum arm means, ?rst ?uid connecting means
of stack 41 on bed plate 20. It also accomplishes the
between the vacuum generating means and the vacuum
clamping in place of a signi?cant portion of stack 41
arm means, a rotatable vacuum communicating means,
between lever 29 and blade 22 and above the tube sepa
rated from its base by cup 10. See FIGURE 6.
70 second ?uid connecting means between the vacuum arm
means and the vacuum communicating means, and vacu
As soon as the clamping action is e?ected, the draw
um arm drive means; a stack support sub'assembly com
rolls or the like of the bottomer can begin drawing the
prising an arcuate blade and blade drive means, the blade
front end of the tube separated at its rear end by cup
drive means including ?rst drive transmission means be
10 into the bottoming apparatus without initiating any
creeping in the tubes so clamped or in the tubes piled 75 tween the blade and the vacuum arm drive means; a stack
3,089,696
5
6
clamping sub-assembly comprising a clamping lever and
5'. The attachment of claim 1 in juxtaposition with a
?at bottomer bed plate near its back end.
6. The attachment of claim 1 in juxtaposition With a
lever drive means, the lever drive means including a sec
ond drive transmission means between the clamping lever
and the blade drive means; and, a housing.
3. A feeder attachment for a multiwall bag bottomer
fed from a stack of ?at bag tubes having a vacuum sub
?at bottomer bed plate near a corner of its back end.
7. The attachment of claim 1 in juxtaposition with a
?at bottomer bed plate near a corner of its back end, the
corner having a rabbet.
assembly comprising a vacuum generating means, a ro
tatable vacuum arm means, ?rst ?uid connecting means
8. The attachment of claim 1 wherein the arcuate blade
between the vacuum generating means and the vacuum
and the clamping lever are disposed to move in substan
arm means, a rotatable vacuum communicating means, 10 tially perpendicular planes.
second ?uid connecting means between the vacuum arm
9. The attachment of claim 2 wherein the arcuate blade
means and the vacuum communicating means, and vacuum
arm drive means; a vacuum releasing sub-assembly com
and the clamping lever are disposed to move in substan
tially perpendicular planes.
prising vacuum arm vent means, third ?uid connecting
10. The attachment of claim 3 wherein the arcuate
means between the vacuum arm means and the vacuum 15
blade and the clamping lever are disposed to move in sub
arm vent means, vent gate means, and gate opening means;
a stack support sub-assembly comprising an arcuate blade
and blade drive means, the blade drive means including
?rst drive transmission means between the blade and the
vacuum arm drive means; a stack clamping lever and lever 20
drive means, the lever drive means including a second
drive transmission means between the clamping lever and
the blade drive means; and, a housing.
4. The attachment of claim 1 in combination with a
?at bottomer bed plate.
ha;‘I
25
stantially perpendicular planes.
References Cited in the ?le of this patent
UNITED STATES PATENTS
1,808,706
2,052,632
2,315,646
2,954,225
Novick
Klemm
Novick
Novick
______________ __ June 2,
______________ __ Sept. 1,
______________ __ Apr. 6,
_____________ __ Sept. 27,
1931
1936
1943
1960
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