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Патент USA US3031944

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May 1, 1962
H. s. LEVKOFF
3,031,935
SLIDE BOX TRAY ERECTING MACHINE
Filed June 10, 1960
2 Sheets-Sheet 1
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May 1, 1962
3,031,935
H. S. LEVKOFF
SLIDE BOX TRAY ERECTING MACHINE
2 Sheets-Sheet 2
Filed June 10, 1960
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FIG. 3
INVENTOR
_ Henry S. Levkoff
BY
ATTORNEYS
United States Patent 0
3,031,935
en
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Patented May 1, 1962
2
1
flap between the top of the tray and the top wall of the
3,031,935
SLIDE BOX TRAY ERECTING MACHINE
Henry S. Levkolf, Great Neck, NY. (% Standard Fold
ing Trays Corporation, 85th St. and 24th Ave., Jack
son Heights, N.Y.)
Filed June 10, 1960, Ser. No. 35,271
3 Claims. (Cl. 93-49)
This invention relates to apparatus for automatically
tubular member.
The apparatus of the present invention for setting up
the slide box trays comprises mechanism for feeding the
blanks previously folded to ?at folded condition, one at
a time to operative position between two mechanisms of
different character for operating on the opposite ends
of the blank. One of these mechanism folds and locks
the parts which form the closed end of the carton, and
erecting or setting up cardboard boxes or cartons of the 10 the mechanism at the opposite end operates merely to
assist in raising the side panels from ?at folded condition
to upright position simultaneously with the raising of the
opposite ends of the side panels by the folding and lock
A slide box consists of 2 parts, namely, a tubular mem
ing mechanism, this mechanism initially operating to bend
ber usually open at both ends and usually rectangular
in cross section, and a tray part which holds the con 15 the end panel upwardly so that the 2 gusset fold portions
are actuated to raise the adjacent ends of the side panels.
tents, often consisting of small manufactured articles of
The raising of the opposite ends of the 2 side panels by
various sorts such for example as staples. It is advan
these different instrumentalities swings the side panels to
tageous to supply both of these box parts to the user
upright or vertical position. Thereupon the locking por
in ?at folded condition. That is to say, the tubular part
tray type, and more especially to apparatus for setting up
trays for slide boxes.
being in the form of a hollow parallelogram in endwise 20 tion of the folding and locking mechanism operates to
complete the closing of the closed end of the tray.
view is easily ?attened by compressing its sides of greater
The invention will be further disclosed and discussed
area against one another so that the opposite edges of
in connection with the accompanying drawings. In these
the ?attened article constitute diagonally opposite corners
drawings:
4
of the carton when set up. This tubular member is easily
FIG. 1 is a view of the apparatus in side elevation;
set up by merely applying opposing forces to its opposite 25
FIG. 2 is a plan view of the apparatus shown in FIG.
corners.
1 with certain parts omitted;
The ?at folded tray member of the slide box consists
FIG. 3 is a perspective view of portions of the appara
of a blank having a bottom panel and 2 side panels
tus shown in FIGS. 1 and 2;
hinged thereto along parallel score lines or hinge scores.
FIG. 4 shows the apparatus as viewed from the left of
At one end the blank is provided with an end portion 30
FIG. 1 and with the upper portion broken away and
consisting of parts which are foldable to close the box
at this end, The tray upon which the apparatus of the
present invention is adapted to operate has at this end
shown in vertical section;
FIG. 5 is an enlarged fragmentary view, with parts
shown in vertical section, of the left-hand portion of the
a bottom end panel having an outward extension which
is foldable along a cut score which is parallel with the 35 apparatus as shown in FIG. 1;
FIG. 6 is a plan view of the slide box tray blank, the
cut score that joins the end panel to the bottom panel.
dotted lines indicating hinge scores; and
'
The sides of the bottom panel are connected to the ends
FlG. 7 is a perspective view of the slide box tray
of the side panel portions, each by a gusset fold portion
as it is set up by the apparatus of the present invention.
which, in a well understood manner, when the end panel
Referring first to FIG. 6 the slide box tray blank which
is bent or folded upwardly causes the adjacent end por 40
is operated on or set up by the present apparatus has a
tions of the 2 side panels to be raised and unfolded or
body portion 10 consisting of a bottom panel 11 and two
swung about their hinge scores toward vertical position.
side panels 12 and 13, together with end portions 14
At the opposite end of the tray blank is another end
and 15 of different constructions. The end portion 14
panel connected to the bottom panel by a hinge score,
and outwardly of this end panel there is a tuck in tab 45 has parts constructed to form, when the blank is set up,
the closed end 16 of the tray as shown in FIG. 7, whereas
vor ?ap member which is in turn connected to the end
the opposite end portion 15 has parts constructed to close
panel by a second hinge score which is parallel to the
that end of the tray at a subsequent stage in the use of
?rst. Also, the end portions of the 2 side panels are
the tray but which are not manipulated by the present
cut scored to form foldable extensions the length to each
being about half the width dimension of the bottom panel. 50 apparatus.
The slide box trays in folded ?at condition are erected
or set up by the user, employing the apparatus of the
present invention for this purpose by which the side
panels are folded to upright or vertical position at right
angles to the bottom panel and one end of the tray is 55
closed by the upward bending of the ?rst mentioned end
panel accompanied by the folding of the gusset fold por
tions until these parts are also in upright or vertical posi
tion at right angles to the bottom panel and extending
across the end thereof. Thereafter and substantially as a 60
continuous process the extension of this end panel is
folded over the tops of the previously folded parts and
its locked end locked into a slit or slot cut during the
formation of the blank in the bottom panel closely adja
cent the hinge score along which the end panel is folded. 65
The user ?lls the boxes in this condition, that is, with
one end closed, with staples or other articles, and then
slides the ?lled tray into a tubular member previously
described. After this the opposite end of the tray is
closed by ?rst folding the extensions of the 2 side panels 70
and then folding the end panel at that end against these
folded extensions, at the same time inserting the tuck-in
That is to say, the blank as shown in FIG. 6 is set
up by the present apparatus as shown in vFIG. 7 where
the side panels 12 and 13 are folded to upright position
to form the sides of the tray, and the parts comprising
end portion v14 are folded to form the end 16 of the
tray, leaving the parts 15 at the opposite end in un
folded condition. ‘These parts are folded after the tray
is ?lled, as for example, with staples, and assembled by
sliding the ?lled tray into its cooperating hollow tubular
portion (not shown) in a conventional manner.
For this reason the parts comprising the end portion
14 comprise an end panel 17 at one end of bottom panel
11 and an end panel extension 18, the sides of end
panel 17 being joined to the ends of side panels 12 and
13 by means of gusset fold portions 19 and 20, respec
tively. These gusset fold portions may be of conven
tional arrangement, ‘but advantageously the outer portion
of gusset fold portion 19 has an extension 21 which is
to be folded beneath the corresponding shorter portion
of gusset fold portion 20 as will be presently described.
These gusset fold portions have the usual 45° fold
lines 22 and are connected to the adjoining parts by the
3,031,935
3
4
usual hinge scores. Extension \18 is also connected to
end panel 17 by a hinge score. A locking slot 23 is pro
vided between bottom panel 11 and bottom end panel
of these blanks (not shown) which is arranged at one
side of (the upper side in FIG. 2) the operative position.
Feed member or plunger 39 is reciprocated as indi
17 within which the outer end of extension 18 is tucked
as shown in FIG. 7 in order to lock the parts forming the
cated by the double arrow by means of an eccentric 41
mounted on shaft 31. This eccentric is provided with an
end 16 of the tray in setup position.
eccentric strap 42 and a connecting rod (not shown)
At the opposite end, the end portion 15 is provided with
an end panel 24 which is an extension of bottom panel
11 and connected thereto by a hinge score. Outwardly
which extends upwardly and at an angle to the horizontal
and is connected at its rear end to the feed member 39.
The feed member 39 advances the ?at folded blank to
of end panel 24 there is a tuck-in tab or flap 25 which is 10 the operative position of FIG. 2 and as it reaches this
to be folded about its hinge score connection with end
position 2 pairs of aligning or positioning ?ngers 43 and
panel 24 at the ?nal closing of the box after the ?lling
44 are operated to maintain the blank in alignment with
operation.
the folding and locking head 33 and the plunger 34. Pin
The side panels 12 and 13 are joined to the bottom
gers 43 which act upon the forward. edge of the blank
along hinge scores 26. The slide box tray blank as shown 15 36 are supported on a member 45 ‘which is pivoted for
in FIG. 6 is furnished by the manufacturer thereof in
rocking movement on stationary shaft 46 which is parallel
flat folded condition as shown in FIG. 2 wherein the
to shaft 31. The member 45 has a downwardly projecting
opposite side portions 12 and 13 are folded about their
arm 47 carrying a follower roller 48 which cooperates
hinge scores 26 into overlying contact with the bottom
with a cam 49.
panel 11. The parts of end portions \14 and 15 which 20 Similarly, the 2 ?ngers 44 which engage the rear of
form the bottom end panels 17 and 24 and their respec
the blank 36 form part of a U-shaped structure which is
tive extensions 18 and 25 lie in the plane of bottom panel
welded or otherwise secured to 2 upwardly projecting
11 (FIG. 1). Also in this ?at folded condition the parts
arms 50 and 51. These arms are also arranged to rock
of the 2 gusset folds 19 and 20 are folded about the ex
on shaft46 and are joined together as shown and actuated
tensions of hinge scores 26 (FIG. 6), keeping the respec 25 by a cam follower 52 (on an extension of arm 51) which
tive portion of the gusset folds in the planes of their re
cooperates with a second cam 53 also ?xed to shaft 31.
spective side portions 12 and 13, but with the elongated
The plunger 34 which supports the plow-shaped cam
extension 21 ‘beneath the opposite gusset fold 20 as
shown in FIG. 2.
35 is mounted on a sliding ‘block 54 which has sliding
movement on a ?xed horizontal bar 55 (FIG. 3). This
The opposite end portion 15 includes extensions 27 30 bar is supported in any suitable manner by means of
which are joined to the ends of side panels 12 and 13
‘brackets secured, to the left hand frame member 30.
respectively vby suitable hinge scores 12a and 13a, and
Block 54 is» urged towards the left by means of a ten
sion coil spring 56 and is moved in the opposite direc
are die cut at 28 from end panel 24 to allow them to be
tion by a face cam. 57 ?xed to the left end of shaft 31
folded at right angles to the sides 12 and 13 at the ?nal
closing of the ?lled box. 'In the ?at folded condition of 35 and connected to block 54 by means of a follower roller
the blank these extensions lie in the- planes of the re
spective side panels 12 and 13 as shown in FIG. 2.
The construction of the gusset folds v19 and 20 is such
58 and pivoted lever 59.
The folding and locking head 33 is operated by means
of a crank and pin 60 and a connecting rod 61 arranged
at the right end of shaft 31. The construction of folding
bent upwardly about the hinge score which connects it 40 and locking head 33 is conventional and ‘comprises a
pivoted folder 62 and a locking head 63. Folder 62 is
to bottom panel 11, gusset fold portions 19 and 20 will
pivoted to the frame at 64, and locking head 63 is piv
force the adjacent ends of the ?at folded side panels 12
oted at 65 to the upper end of folder 62. Both parts are
and 13 upwardly, and when the end panel is raised to
operated by an actuator 66 which is connected by a link
vertical position, the extension ‘18 can then be folded
over the top edge of end panel 17 and the folded gusset 45 member 67 to the locking head 63. Link member 67 is
pivoted at 68 to actuator 66 and at 69 to locking head 63.
fold portions to form the end 16 of the tray as shown
Actuator 66 is connected to the upper end of connecting
in FIG. 7.
rod ‘61 and imparts its upward folding movement to folder
Referring now to FIGS. 1-3 the apparatus comprises
62 by means of a compression spring 70.
a base 29 having 2 upright spaced frame members 30
During the ?rst part of the actuation of folding and
secured thereto in any suitable manner. Rotating in 50
locking head 33 by connecting rod 61 and crank 60, the
bearings in these frame members is a single shaft 31 which
folding or bending of the end panel 17 and its extension
is rotated by a sprocket and chain connection 32 to elec
18 takes place about the hinge score 71 which joins
tric motor, or other suitable power source. On this shaft
that when the bottom end panel extension 17 is swung or
panel 17 to base panel 11 (FIG. 6).
55
It will ‘be understood that the cam shaft 31 controls
ing the various parts of the apparatus.
the operation of the various parts‘ in properly timed re
The operative position at which the ?at folded blanks
are mounted suitable cams and other devices for actuat
are set up is shown in FIG. 2 and at the right of this posi
lation to one another. That is to say, the feeding plunger
39 feeds the blank to the operative position of FIG. 2'
tionthere is a folding and locking head, indicated gener
and immediately upon reaching this position the position
ally by numeral 33, whereas at the left of the operative
position there is a reciprocating plunger 34 in the form 60 ing ?ngers 43 and 44 are actuated to hold and maintain
the blank in this position during the setting-up operation.
of a ?at blade-like member having a plow-shaped cam
This setting-up operation comprises a movement to
ward the left of plunger 34 and its plow-shaped cam 35
and the simultaneous folding movement of folding mem
in the operative position with its opposite ends in align
62 about its pivot 64 to bend the parts of the blank
ment and adjacent to the respective setting-up devices just 65 ber
at the right hand end upwardly. The plow member 35
ming member 35 ?xed on its inner or right end.
A tray blank in ?at folded condition is shown at 36
referred to. This blank rests upon a flat table member
37 at is left end and at its right end on a somewhat simi
enters below the centers of the slightly overlapped side
panels 12 and 13, or more properly their end extensions
27. This initiates the raising movement of the side mem
lar table member '38. It is supported at its central
portion by the ?at apron of a feed member 39. At the 70 bers. Simultaneously therewith the upward bending of
rear (upper part in FIG. 2) of the feeding member there
end portion 17 about hinge score 71 causes the gusset
is mounted a pusher plate 40. This plate is slightly less
folds 19 and 20 to raise the opposite ends of the side
in thickness than the thickness of the flat folded blank \
members 12. and 13.
36, and its forward edge pushes a single blank in the di
This lifting movement simultaneously at their opposite
rection of thesingle arrow from the bottom of a stack 75 ends continues until the side panels are vertical as shown
3,031,935
in FIG. 7. At this point the gusset fold portions and
the end portion 17 are also vertical and in contact with
one another. Immediately following this the locking head
63 begins its pivotal movement about pivot 65 and folds
the extension 18 about its hinge score line and over the
edges of the end portion 17 and the gusset folds and
tucks the outer end of extension 18 into locking engage
ment with locking slot 23, also as shown in FIG. 7.
The plunger 34 and plow 35 now recede to the left
6
member for entering beneath the ends of the ?at ‘folded
side panels, means for moving said plunger into engage
ment with the ends of said side panels and for simultane
ously with the moving of said plunger actuating said
folding and locking head mechanism to simultaneously
raise the side panels and set up the carton.
2. In apparatus for setting up from ?at folded condi
tion a slide box tray blank composed essentially of a
bottom panel having side panels connected thereto, said
and the folding and locking head mechanism 33 operates 10 ‘bottom panel having at one end an end panel and a
foldable extension thereof, said end panel being con
in the reverse direction to the position shown in FIG. 1.
nected to the respective side panels by gusset fold por
In this position the set-up carton is released by the move
tions so that upward ‘bending of said end panel causes
ment of the pairs of ?ngers 43 and 44 which recede be
the adjacent ends of the ?at folded side panels to be
low the surface of feed member 39 and allow the next
raised, and the bottom panel having at its opposite end
folded ‘blank advanced ‘by plunger plate 40 to push the
an end panel and tuck-in tab extension in co-planar re
set-up carton forward, or to the left in FIG. 3, over the
lation to the bottom panel, said apparatus having an op
surface of plunger 39 from which the set-up carton is
erative position at which the ?at folded blanks are set
removed from the apparatus either manually or by auto
up, a folding and locking mechanim at one end of said
matic mechanism (not shown). As the set-up carton
is moved away from the operative position of FIG. 2 20 position for bending said ?rst-mentioned end panel and
raising it to vertical position and folding thereover said
the end portion 24 and tuck-in ?ap 25 at the left remain
end panel extension, mechanism at the opposite end of
in ?at condition and slide beneath the plunger 34.
said operative position for engaging and raising the ad
It will be understood that changes can be made in
jacent ends of said ?at folded side panels, means for
the mechanism described herein and that consequently
the scope of the invention is set forth in the appended 25 feeding slide box tray blanks in ?at folded condition one
at a time successively to said operative position with the
claims.
tuck-in tab and adjacent end panel beneath said raising
I claim:
mechanism, and means coordinated with said feeding
1. In apparatus for setting up from ?at folded condi
means for simultaneously actuating the side panel rais
tion a slide box tray blank composed essentially of a
bottom panel having side panels connected thereto, said 30 ing mechanism and the folding and locking mechanism to
set up the carton.
bottom panel having at one end an end panel and a
3. Apparatus as set forth in claim 2 wherein the
foldable extension thereof, said end panel being con
mechanism for engaging and raising adjacent ends of the
nected to the respective side panels by gusset fold por
?at folded side panels consists’ of a plunger having a cam
tions so that upward bending of said end panel causes
the adjacent ends of the ?at folded side panels to be 35 at its end, said plunger being longitudinally slidable to
cause said cam to enter beneath the adjacent ends of
raised, and the bottom panel having at its opposite end
said folded side panels.
an end panel and tuck-in tab extension in co-planar re
lation to the bottom panel, said apparatus comprising
a folding and locking head mechanism for bending said
?rst mentioned end panel and raising it to vertical posi 40
tion and folding thereover said end panel extension, and
a longitudinally slidable plunger disposed in spaced re
lation to said folding and locking head and operating
upon the opposite end of said blank from the folding
and locking head, said plunger having a plow-shaped cam 45
References Cited in the ?le of this patent
UNITED STATES PATENTS
2,464,407
2,541,914
Levko? _____________ __ Mar. 15, 1949
Conser _____________ __ Feb. 13, 1951
2,753,770
2,765,715
Chapman ___________ __ July 10, 1956
Kerr ________________ .._ Oct. 9, 1956
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