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Патент USA US2110368

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March‘ 8, I938.
Filed Jan. 31, 1936
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5*Sheets-Sheet 1
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March 8; 1938.
Filed Jan. 31, 1936
5 Sheets-Sheet 3
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~BY Wadi‘
Patented Mar. 8, 1938 .
_ 2,110,368
George Lautzenheiser, Blu?ton, Ind... asslgnor to
Amos Neuhauser, Bluffton, Ind;
Application January 31, 1936, Serial No. 81,791 V
4 Claims.
The invention relates to folding machines and
Fig. 5 is a cross section in enlarged scale on line
it is particularly directed to machines for folding - 5-5 of F18. 2.
Fig. 6 is a cross section on line 6-—6 of Fig. 5.
paper boxes.
Fig. 7 is a side elevation of one of the corner
In the manufacture of paper board boxes of
5 the folding type, the box blank is usually formed
on a die which scores the sheet to define the side
wall and corner sections. To set up the box it is
necessary to ?rst break down or weaken the score
lines by folding the wall sections onto the bottom
10 forming section of the blank.
In some boxes the
corner sections connect adjacent wall sections and
each corner section is diagonally scored between
the score lines that are common to it and to the
adjacent wall sections, so that the corner section
15 may collapse against one wall section when the
box is set up.
Heretofore, in the preliminary folding operation
tions previously folded thereon. This operation
breaks down the scoring between the corner sec
tions and the latter sections but it does not weaken
This weakening or breaking down of the scor
30 ings is generally done by the manufacturer and
the blank when received by the customer will
have two opposite walls folded onto the bottom
with the corner sections folded onto the other
_ wall sections and if the latter wall sections carry
locking flaps, these ?aps will be folded onto the
folded corner sections. Unless all the scorings of
the corner sections are previously broken down
the corner sections will not readily collapse when
the customer sets up the box by rocking the wall
40 sections upwardly that have the corner sections
folded thereon.
The object of my invention is to provide a ma
chine that will accomplish the breaking down or
weakening of the scorings which de?ne the wall
45 sections of a folding box blank and the scorings of
the comer sections that connect adjacent wall
sections of the blank and also other selected scor
ings thereof and thereby avoid all hand folding of
the parts to accomplish the weakening of scorings.
The invention is illustrated in the accompany
ing drawings in which
Figure 1 is a front elevation of the machine.
Fig. 2 is a side elevation of the machine.
Fig. 3 is a plan view of the main frame or table.
Fig. 4 is a cross section on line 4-4 of Fig. 3.
Fig. 8 is a plan view of a box blank.
Fig. 9 is a fractional plan view of the table illus
trating a box blank in position to be operated-on.
Fig. 10 is a fractional plan view of the feed
. table illustrating the box in initially folded con
Fig. 11 is a cross section. on line |i—-l| of Fig.
10; illustrating the ?nger raising a corner section
of a‘ box blank.
Fig. 12 is a plan view of the flap folding mem
to break down the scorings, each corner section
is folded onto a wall section as the adjacent wall
20 section is folded onto the bottom section. This
only breaks down one score line of the corner sec
tion. It is necessary to fold the wall sectionhav
ing the corner sections thereof folded onto the
bottom section and onto the opposite wall sec
the diagonal scorings.
elevating members.
Fig. 13 is a plan view of a modi?ed and simpli
?ed form of the die and Fig. 14 is a cross section
on line [4-H of Fig. 13.
In the drawings the machine is designed pri
marily to fold boxes of the type shown in Fig. 8,
in which the blank is scored toform the bottom
(or top) I, the side sections 2, the end sections 3
and‘ the corner sections 4. - Each corner section
has a diagonal scoring 5. On each end section
there is a flap 6 having a locking flap 1» thereon
and defined by the scoring 8 and the locking ?aps
9 at the oppositeends of said flap 6, defined by
the scorings Hi. All of the scorings except 8 and
I0 may be broken down or weakened by the illus- d
trative machine,- which folds the blank into the
condition shown in Fig. 12.
The machine in general consists of the main
frame 20 having a top or table 2!. A frame 22
is mounted on'the top at one side thereof and 35
supports the shafts 23 and 24. A pulley. 25 is
loosely mounted on the shaft 23 and. a clutch 26 is
adapted to connect the pulley to said shaft. The
pedal 21 mounted on a rock shaft 28 is operatively
connected to the clutch by the rod 28'. A belt 29
connects the pulley 25 to the drive pulley 30,
mounted on the shaft 24. A pulley 3| drives the
shaft 26 and is itself driven by the belt 32 which
is driven by an electric motor 33 or other source
of power.
A crank disc 34 is secured to the shaft, 23 and a
crank arm 35 is connected to the disc and to a
collar 36 attached to aplunger rod 31 thatis lon
gitudinally slidable in thebearings 38 formed on
the frame 22; ‘A plunger 39 is attached to the
lower end of the rod 31 and approximates in out
line the interior of the box to be operated on.
is evident that by depressing the pedal 21 the
plunger 39 is caused to reciprocate vertically.
An opening MI (Fig. 3) is formed in the top or
s,1io,'ses ‘
tm wum
.new”? m, .wmvlnm_u.?sm.wgmmumWw, w?m‘ mdwm m
sections on their
suns (Figs 1, 2) carry'tolie'rs 40 (Fig 2)
ko.mum wmI. , mui wmum m
ispsed condition
20 at their upper ends which engage in the grooved
m: U. n
m. W w
.e 1,,h
thst the downward].
&£sm , ,mi
throughsthe said 09811111!- x '1;
Thebox blanhsiterit
“mhmem mim
m wEm,maiu.wm% ?u
ixigljy'isguided in its'descent by the here 18
~ which>retsin4the side walls. 2 in substsntisliy
uprightposition until the box contacts the inter
‘ mediate table 14.
‘A notch orother
I isjiormedlin esch guide "st the proper'pcin‘tgso ‘
r .m
c ,.,m
e w
that thesupperedges oi the sidejwsllsgot
the table
‘I! and‘prevent
the same ‘when
1 therising
m mNewmm,Winwm ?m mw,
v serily supported, hen'ee ,in‘the descent'oi the
eiter it leaves the opening ll. the‘ end
more or less to their ‘ini?si-po‘sition relstiveb'to
similnrly messed‘; :its sidej'iscingjtheoperstor plungerlcontectsjthel hot- H
on oi-thehlsnk sndiiorces' the
the hottomjsection‘ I;
" ‘ *
accomplish" this step I mount 0.
"ll 7 (Fig. '5) 0! suitable‘ number in sio
tsble 14. Each roller irictionsliy engsgess
_ll,-v the
of, the
end end-iorming-zsee-j 11 above it. Theroliers," sre simuitsneomiy, ‘
plunger; Theepdwalls oi-‘the box sre
driven by the shstt smmmn the‘chnin ‘Ilrthe ‘ i
von-the score‘
contour oi the bottomfsection;
toiormthe-openlnl “in a me"'.?mt
is removsbiy supported in snopening- ll formed
shaft ill-and the ges‘ring ll connecting
' ~
to thejsheft oi‘the said rollers. The rollers ‘ll 55
Pare spring opposed “to
the feed tsblejl in-oi'der'thstrithemschine ‘ thicknesses of
Arsecond set
toid‘vsrious 'sisesoi harem-"it being np-' II, II, is‘mountedjin the hrsekets ll'csrried by '
of box requiress cone-m ,the'tsbl'e ‘ll. Esch oi'thenollers Ii irietionsliy- -
spending opening ll'throngh which ‘it’ my be ' engages s short spring opposed roller “end the w
' roller "opposes thewrdilerll. ‘The
"*Inio‘rder ‘that the corner sections
i “1 10,1 ‘11); which‘ is .disposed'in'e' groove ss', formed
" in the piste I‘l'sndispivoted st one end therein.
; 'l‘h'eyopposite endoi' the iingerisbeyelledion its
i ‘
sea in tree end is sodimosed um n
'- wiil‘engegethecornereec'tion ‘oi’ the hlsnkclose
scoring. Benesthesch ?nger “there is s, plung;
V l '75 for
ZThe yokes it
stone end oi’ the opening um
‘ll snd-csr‘ries stits iorwsrdsidesdoynwsrdb
bent plate It which,'.when-thes
towerd the am: peir
Mimi s1 7
_ section; the ?nger‘ being elined‘v ‘with the ‘lead
. er'il which engsges'theiingersnd its'iower end
‘Apusher II is slidsbly niounted'on the hue“
70 to the'inner end of thedisgonsi scoring rliinssidi moves.
, driven hyithe chain or belt” which‘is
by the shaft II. The ge'sringgly'l csus'es the roller ‘
The oppositesi
mwmlx when.»
ends oi‘ the '
; '
9,110,868 .
are mounted on the standards
dustably mounted on the table
slopes downwardly on each side
standard and it is also bent or
9| that are ad
‘I4. Each guide
of its supporting
curved inwardly
so that their forward ends are much nearer to
each other than their opposite ends. These
guides are adapted to be engaged by the end sec
tions of the box as the box travels through the
several rollers. The said end sections ?rst travel
10 up the inclined portion of the guides and in doing
so are caused to fold inwardly. As they travel
down the declined‘ portion of the guides the
tapering or converging guides cause the end sec
tions to fold over onto the folded side sections
15 of the box by the time the box has reached the
last pair of rollers by which rollers the end sec
tions are ironed ?at and the folded box is deliv
ered from the last pair of rollers onto a plate 92
(Fig. 5) that is secured to a rock shaft 93 and op
20 eratively connected to a convenient part of the
machine. for oscillation so as to swing the box to
a vertical position on edge on the carrier 94.
A lever 95 (Fig. 6) is pivoted to the main frame
and its upper end is suitably pivotally connected
25 to the pusher 88, as by engaging said end in a
slot 98 in the pusher. A rod 91 is adjustably se
cured at one end to the lever 95 and its opposite
the die I00 is used the guides 13 will be carried by
the table top 2|.
What I claim is:
1. A machine for folding boxes having fold
able side walls and collapsible corner sections
integral with said walls, comprising means to
engage and turn the walls simultaneously per
pendicularly to the plane'of the bottom or top
wall of the box, means to engage the corner sec
tions and cause them to fold inwardly as the 10
walls move to break down the score lines of said
sections and means to fold the turned walls in
wardly and downwardly.
2. A machine for folding box blanks having
foldable side walls and collapsible comer sections,
and comprising a table having an opening in its
top, the area of the opening corresponding to the
area of the bottom or top of the box to be folded,
means to force the box blank through said open
ing for turning the side walls perpendicularly to 20
the plane of the bottom or top wall of the box
blank, means adjacent to each corner of'said
opening adapted to engage the comer sections
and cause them to fold inwardly as the blank
passes through said opening, and means to sub-i 25
sequently fold said walls onto the bottom or top
wall of the box.
end is connected to an eccentric 98 mounted on
-3. A machine for folding box blanks having
the shaft 53. The reciprocating rod 9'! causes
foldable side walls and collapsible corner sections -
30 the reciprocation of the pusher at the proper
The adjustable‘guards 99 assure that the box,
now having its side sections folded over onto its
bottom. section by the ?rst pair of rollers, will
35 pass under the second pair of rollers while the
and comprising a feed table, a die supported by 30
the table and having an opening therein corre
sponding in outline to the bottom forming or top
forming wall of the blank, means to feed the
blanks successively onto the die, a plunger to
engage the bottom or top forming wall of the 85
end sections are being turned upwardly by the blank and force the blank through the‘ said open
ing whereby'to turn upwardly the walls of said
guides SI.
A simple form of die Hill is shown in Figs. 13, blank, a member at each corner of the opening
14, which may be substituted for the die 58. In - to engage the corner sections and cause them to
this form of die the plate llll is adapted'to seat collapse inwardly as the blank is moved through
in the opening is in the table 2! and the opening said opening and means to fold the walls inward
I02 is formed in said plate, the walls of the plate ly and downwardly.
4. A machine for folding box blanks having
about the opening being sloped downwardly in
wardly. The corner/between each two adjacent foldable side walls and diagonally scored comer
walls is not sloped downwardly but its top is ?at. sections integral with said walls and foldable
and its side walls converge inwardly so as to form thereon, and comprising means to engage and
an abutment I03 that will engage the corner turn the side walls.perpendicularly to the plane
section of the box blank that rests on it and cause of the top or bottom wall, means to engage the
said section to fold inwardly as the plunger forces corner sections and cause said sections to initially
the blank through the opening ill in the die, fold inwardly on the side wall sections and to
the side ?aps of the blank being received by the be collapsed on the diagonal score lines under
slots I04 in the die so that said ?aps are not the in?uence of the turning movement of said
folded. This form of die-is much more simple‘ walls, and means to fold said walls onto the top
or bottom wall.
than the die ll as it eliminates the pivoted ?n
lg‘ gers ‘I and their operating
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