close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2405868

код для вставки
Aug. 13, 1946.
L. A. WHITTAKER- :arr/lu.-
- 2,405.86@
CUTTING AND CREAS’ING PRESS
Filedv March 8, 1944
'
6 Shee't-s-Sheet 1
,m
~
. Aer/d'
y.
nv
Aug, 13, 194.6.A
l.. A. WHITTAKERET AL
2,405,868
` v'CUTTING AND CREASING ‘PRESS
' Filed Marone, 1944
WM..
6 Sheets-Sheet 2
v
Aug. 13, 1946.
L. A. wHl‘rTAKER ET Al.
' CUTTING AND CREASING PRESS
Filed March v8, 1944
2,405,868
.
'
6 sheets-sheet 4
U9.
` @Méfi
Aug. 13,> 1946.
L. A. WHITTAKER -laf/M_
2,405,868
CUTTING AND CREASING PRESS
Filed Marche, 1944
l
@sheets-sheet 5
Aug- 13, 1946.
L. A. WHITTAKER ET AL-
2,405,868
CUTTING AND cREAsING- PRESS
Filed March s, 1944
s sheets-sheet s
Patented Àug. i3, i946
2,465,868
UNi'rsD STATES f PATENT OFFICE
2,405,868
CUTTING AND CREASING PRESS
Lloyd A. Whittaker and Harold F. Peterson,
_
Franklin, Mass., assig'nors to Thomson-Na
tional Press Co., Inc., Franklin, Mass., a cor
poration of Massachusetts
‘
Application March 8, 1944, Serial No. 525,618
'
1
11 Claims.
(ci. 164-19)
2
.
The present invention relates to improvements
in cutting and creasing presses for the purpose of
cutting and creasing such flat materials as paper,
impregnated papers, cardboards, corrugated card
material to be fed in readily at one end and to
be taken out at the other end during the move
ment of the arcuate table back to its initial posi
tion.
,
-
board, composition materials, plastics, fabrics,
A further advantage of the present invention is
wood and plywood, rubber and even soft metal
that essentially there is only one moving part
materials.
'
as the table does both the reciprocation and the
Cutting and creasing presses and likewise >`other'
oscillation in the cutting and creasing operation.
types of presses are as a rule of two general forms;
Other and further advantages of the present
one, the rotary cylindrical press, and two, the 10 invention will be more readily understood in con
flat bed press.
nection with the speciñcation annexed hereto de
In the flat bed press the cutting and creasing
scribing the invention in connection with the
die is set into the underneath side of a ñat head
drawings showing an embodiment of the same
and the sheet is placed on a flat table, the head
in which:
and table being brought together over their whole 15
Figur@ 1 shows a side View oi the cutting and
surface, cutting or creasing the whole sheet which
creasing press with portions shown in dotted posi
may have been placed on the table at the same
tion.
.
time. Very large machines of this type have been
Figure 2 shows another side view of the inven
built of such a size as to take a sheet 50" x 80”
tion with po-rtions shown in fragmentary sections
with the result that very great pressure is neces 20 and elements in a different position than shown
sary between the head and the table to force the
in Figure 1.
cutting and creasing dies into or through the ma
Figure 3 shows a section through the machine
terials, especially for such materials which ar
with the center broken away taken on the line
heavy and hard.
'
In the rotary press the material is fed over a 25
3-3 of Figure 2.
Y
Figure 4 shows a section substantially similar
to Figure 3 through a portion of the machine.
Figure 5 shows an end view of the machine
large rotary cylinder and the die or creasing
forms set into a fiat bed which reciprocates back
and forth, in one direction coming in contact with
viewed from the right of Figures l and 2.
the Lsheet which is wrapped around the cylinder
- Figure 6 shows a detail ofthe top pOrtion of the
and pressing and creasing it, and in the other 30 machine with the head inran extended position.
direction dropping from contact with the cylin
Figures 7, 8 and 9 show enlarged details.
der in preparation for cutting and creasing the
In theñgures, I is the frame which is provided
next sheet. In the cylindrical cutting and creas
with two large side plates 2 and 3 which may
ing press the ñat plate is always tangential to
be of cast metal or other suitable material. The
the cylinder in the cutting and creasing opera
plates 2 and 3 have top finished bearing surfaces
tion so that only one line of cutting dies, trans
Il and 5 with recessed tracks or grooves 6 and 1
verse of the platen, exerts pressure at. a time
in which are positioned two groups of rollers 8
on the sheet to be died out, the cylinder in effect
and 9 respectively, journalled in side bars, Io and
rolling over the platen plate.
II for the rollers 8, and I2 and I3 for the rollers
The present invention provides a number of ad
9. These sets of rollers run freely on the frame
vantages over the cylindrical press in addition to
and support the top head or die holder I4 which
this feature of the cylindrical press, that only a
is provided with two extending flanges I5 and I6
tangential portion of the platen cutter meets the
resting or bearing on the rollers 8 and S respec
table so that the pressure is not that which would
be necessary to cut and crease a whole sheet at 45
tively.
once.
faces I'I and I8 bearing against corresponding
'I'he head I4 is also provided with bearing sur
In the present invention the head holding the
cutting and creasing dies is stationary and the
surfaces I9 and 20 on the arcuate table 2l which
will be described in more detail later.
table which is arcuate is both oscillated and re
The head Ill has formed as an integral part
ciprocated in the cutting and creasing operation. 50 of it a flat plate 22 in which the cuttingV or creas
This permits the design of a simple motion which
ing dies 23 are set. These are of the usual con
at all times is readily balanced in the machine
struction and are held in place by a chase 24
and makes it unnecessary for the head to_slide
clamping the cutting and creasing dies in place.
to a stop at the end of each oscillation. Further,
The head Ill is ribbed and arched for support
the oscillation of the arcuate table permits the 55 and while it is adjustable on the side supports
2,405,868
of the frame, in its use and operation it is clamped
in place. This is accomplished by means of angu
lar, supporting and clamping brackets 25 and
i 25 which are bolted to the side portions of the
frame 2 and 3 by means of a series or" bolts 2l
and 28 respectively. Wedging clamping bars 29
and Si) recessed slightly in the inwardly extend
ing flanges of the brackets 25 and 26 serve to
clamp the head rigidly in position after its posi
tion has once been adjusted. These wedges 29
and 35 may be simultaneously operated ’by means
of the operating bar 3l (see Figure 5) which will
be presently described.
f
The head i4 on one side ¿is provided with 4a
rack 32 which is fastened to the side edge of the
flange i5. Meshing with the rack v32 is a pinion
33 which is journalled in a forked bearing' Y35’
which is fastened to the side bracket 25. The
pinion 33 is operated by means of the handle 34
which turns -a crank arm 35 rotating the shaft
Á3'6 'onïwhich the-pinion 33 is mounted. By turning
the "crank arm 34, therefore, the head may be
extended from the position shown in Figure 2 -to
the position shown in Figure 6 `or in any .inter
mediate position.
A plurality of 'end ‘stops 31
4
manner. The taking off may also be done mari
ually or automatically by methods common in the
art. The arcuate table 2| may be made of cast
or other metal material and is freely supported
by a shaft 52 about which it is free to turn. The
arcuate table 2i may navega number of support
ing brackets, as shown in Figures 3 and 5. The
shaft 52 is itself journalled in carriages 53 and
54 which are slidable on rollers in slots in the side
portions 2 and 3 of the main frame.
This construction is shown in Figures 1, 2 and
5 and 10. The carriages 53 and 54 which slide
in slots 55 and 55 in the frames 2 and 3 furnish
the 4bearings for the extensions 51 and 58 of the
-shaiït ¿52 in lsuch `a manner that the shaft 52 is
eccentrically positioned with respect to these eX
tensions 51 and 58. In the position shown in Fig
ure 3, the shaft 52 is in its highest position. The
extension 57 at the left of Figure 3 is supported
by. a toggle joint support which lowers the shaft
52 when it `is rotated eccentrically about its ex
tensions 51 and l5B. This is accomplished by
`means vof the crank arm 59 in which the end
of the shaft 5l extends. The Abell vcrank arm 59
has vpivoted to its free end a bell crank lever 60
which is pivoted at the fulcrum 9i and »linked by
and ~38 are provided for limiting the motion 'of
means of the pivot 62 to the crank arm 63 which
the head beyond the end of the frame.
is >¿ìou’rr'ialled to the shaft y(ill >of one of the rollers
The wedging previously briefly described ‘is con
65 of `one bearing in the sliding carriage for the
trolled by means of the operating bar 3l. This
bar >at each side 'of the frame is `provided with 30 shaft 52. In the position shown in Figure 10,
the farm 66 of the bell `crank lever 65 is extended
crank arms 39 and 49 to which the shafts ¿I
vertically 'downward and will remain in Athis po
land 42 are attached. These shafts are journalled
ïsition until the arcuate Ytable has been carried
in the top portions 43 and 44 of the side brackets
to one ‘end of the frame, ‘the .left end as viewed
-25 ‘and 2B vand are provided at their ends with
in Figure 1. It will thereupon strike the stop
‘eccentrically positioned ïpin's 45a`nd 45 operating
55.’ and be thrown `rto the 'right whereupon the
in transverse slots 4T and 481 in the wedges 29
crank 59 ¿will be vmoved to the right, as viewed in
and 3B. These wedges are tapered'as-seen -iïn Fig
Figure ‘10, and the shaft 52 *will thereby be
ure 6.
dropped. The crank 59 and the vextension 5l' are
The head llli is l?noved to the left, Yas viewed in
Figure 6, in order to permit working ¿room for 40 îtie'd ¿together by a Íkey-way 65 or by any other
suitable means. This 'dropping `of lthe lshaft .52
Vthe operator to set «in place the 'chase and cut
will îp‘r'ovide clearance between the arcuate table
¿ting >and creasing dies without being troubled by
and the cutting and creasing head.
the arcuate table 2l. When this ¿has Ybeen ~ac-As ~shown ’inFigures »1 and 2, the arcuate table
-corr'rplished ‘and when the-arcuate -'table has also ‘
lis îprovided with '5a sector gear 61 which engages
lbeen `fully Vprepared or -“made ready” as Awill be
¿affixed »rack Sil-attached to the'sîde »frame 2. This
explained, the head is brought back to position,
iisïshown inFi'gures 3 and 4. The rack 6'8 »is ‘iiXed
the position -shown'in Figure -1 or Figure 2 and
'tothe yframe in a permanent position -:and 'not
Vis lockediniits `proper place. Thisi's accomplished
'to »the head i4 since’the `hea-d must -b'e adjusted
lby forcing the wedge to the left,v as viewed in
Figure "6. by pulling on the -bar 3l. The'wedges ' `for removal of the dies and Iforacces’s to ïthe lar
fcu'ate table. The arcuate -ït'able ¿22h #as 'has been
>§29 land 3S are thereby »forced in between the
flanges l5 and i6 of the head andthe íianges
_43 and vlill of the‘brackets 25 and 2S thereby »firm
ly tightening the head in its position. The head
is, of course, swung -in or out >to the -p'roper po
siticn by means 'of the "crank 34 before the tight
lexplained above, has both an oscillating and 're
ciprocating motion. «For rthis ‘purpose there -is
-provided a harmonic fdr-ive fshown »in dotted `po
sition in 'Figures 1 and '-2. This includes -'a drive
lshaft'iiß which may be-‘dri-ven `by a'motor through
ening of the wedge is accomplished.
~a reduction gear with the initial `driving arm or
The cutting and creasing dies may be set in the
head in any well known manner. This is com
isfattachedto the-’shaft52 in lthecollar orbearing
monly’done by setting theknife edges‘as, for in
stance, 69, Figure 3, in a wooden or other sup
porting piece and surrounding it bvpîeces of Arub
ber or cork 58 and 5! which serve to aid in eject
ing the work after it hasbeen cutfor creased by
the knife. The ‘material to be cut is fed onto
the arcuate table ~2l. This mayîeither be done -by
hand or the sheet may be fed automatically by
a ‘feeding mechanism of any of the well known
types. The feeding may be done frdmcn'e end
andthe piece may be ‘taken off from the “same
end or `-from the opposite end. yIn Figure 5 the
"grippe'rs-Sil lare shown at sth'e'en‘d. of ‘the table.
crank 10 linking with a second -cran'k -ïl which
l2. The drive `>for ‘the shaft is preferably »at a
«number ¿of -points Vthrough several «cranks and
~>bearings T2 and «13. ~By ¿means of this drive, the
>shaft >52 and its supporting `carriages »53 and ¿5d
which are mounted on the rollers 55 and 65’ are
moved from one end of the slots 55 to the‘o'ther
end of Ithe'slot with aïharmonic »motion with zero
vvelocity at~eaohend of ~the slot. At the 'right end
’of the ’slot the >toggle -detent 565 'hits .against 'the
~`stop=65^and drops the shaft-52. Any other suit
able means maybe used to’throw-out and in the
I¿toggle- de'tent at the Íend of »the lmotion. As has
'been explained, the Yoïoïntílilied? motion ofïthe drive
`‘ci‘arik-pulls »the arcuate îtable back to its initial
ïpösitio'n ’where 'the "arm ‘55" of the 'bell >crank 1e
and cam ata given position of the table in any 75 ver comes in Contact with the other stop ‘i4 which
YThese frnay 'be Vmechanicallyïoperated =`by 'a >rod "
2,405,868
5
6
'raises the shaft 52 back in position where the
eating motion, said last-named'means compris#
arcuate table comes in contact with the head, the
bearing flanges I'l, I8, I9 and 20 serving as a
guide for the engagement of the table and the
head. In the motion of the arcuate table, the
sector gear 8'! meshes with the rack 68 so that'the
ing a rack mounted in said frame and a sector
gear mounted on said table and engaging there
arcuate table oscillates or rotates on the shaft
a shaft on which said table is pivoted, a carriage
with.
`
`
4. In a cutting and creasing machine, a frame,
a head mounted thereon, an arcuate sector table,
movably supported with respect to said frame
52 at the same time that its axis is reciprocated
for carrying said shaft, said carriage eccentrical
back and forth beneath the head.
In the arrangement shown in the present appli l0 ly supporting said shaft means for reciprocating
cation, cutting and creasing takes place as the
the shaft longitudinally of the head and frame,
arcuate table (as viewed in Figures 1 and 2) has
means inter-connecting the table and frame for
its axis moved from the right to the left. In the
oscillating the table during the reciprocating mo
reverse motion the table' is disengaged from the
tion, and means included in part in said carriage
head to a degree such that no cutting or creasing
for rotating said eccentrically mounted lshaft at
takes place.
\
the ends of the motion thereof to engage and dis
engage said table from said head.
It should be noted, however, that in this opera
tion the sector gears 61 and the rack 68 are large
v5. In a cutting and creasing machine, a frame
and will continue to mesh even though the table
having a bearing flange, a headïhaving a bearing
has been dropped a considerable amount. This 20 flange slidably mounted on said frame, an elon
insures that the cutting and creasing operation
gated wedge, means for tightening said wedge be
will be accurately repeated for each stroke.
tween the frame and said head in the bearing
One of the advantages of the present arrange
flanges, an arcuate sector table having a shaft
ment is that the arcuate table may be made clear
upon which said sector table is freely journalled
of the head by moving the head out from above 25 for supporting the same, means for reciprocating
it. This permits the arcuate table to be “made
the shaft longitudinally of the head and means
ready” with considerable ease as the operator
inter-connecting the table and frame for oscil
has easy access to the arcuate table.
lating the table during the reciprocating motion.
The table is properly built up in the well known
6. In a cutting and creasing machine, a/frame,
manner to the proper height by layers of paper 30 a head positioned thereon, means for sliding said
or other materials after which the cover 8i) is
head with respect to said frame comprising a
drawn tautly over it and clamped in position by
pinion mounted on one of said elements and a
the clamp 8l. (See Figure 2.)
rack on the other thereof, an arcuate sector table
The press herein described may be made in any
positioned and adapted to be in substantially tan
desirable size but has a prime advantage in that
gential contact with said head and having a
it may be made in Very large sizes and operated
supporting shaft upon which said sector table is
at a rapid rate, more rapidly than has been ac
freely rotatable, means for reciprocating the shaft
complished with machines of the prior art of the
longitudinally of the head and frame, means in
flat bed type.
ter-connecting the table and frame for oscillating
It will readily be appreciated that modifications 40 the table during the reciprocating motion, and
and changes may be made in the present con
means co-operating with the head and the frame
struction for automatic and manual operation
for locking said head in position for normal op
without radically departing from the spirit or
eration.
»
scope of the present invention and we therefore
7. In a cutting and creasing machine, a frame
claim as our invention:
having guide channels in the sides thereof, a flat
l. In a cutting and creasing machine, a frame,
head, sliding bearing means supporting the head
a head mounted thereon, an arcuate sector table
in the guide channels, means for adjusting and
positioned and adapted to be in substantially tan
ñxing said head in a selected position along said
gential contact with said head and having a sup
sliding bearing, an arcuate sector table positioned
porting shaft upon which said sector table is free
and adapted to be in substantially tangential con
ly rotatable and means providing a harmonic mo
tact with said head and having a supporting shaft
tion with substantially no velocity at the end of
upon which said sector table is freely rotatable,
the motion for reciprocating the shaft through a
a sector gear carried concentrically by said sector
given stroke.
table, a rack fixedly positioned longitudinally
2. In a cutting and creasing machine, a frame,
with respect to said head and adapted to mesh
a> head slidably positioned on said frame, an arcu
with said sector gear, 4and means for reciprocat
ate sector table positioned and adapted to be in
ing said shaft in a direction parallel to the motion
substantially tangential contact with said head
of the head in said guide channels.
and having a supporting shaft upon which said
8. In a cutting and creasing machine, a frame,
sector ‘table is freely rotatable, means for recipro 60 a head mounted thereon, an arcuate sector table
cating the shaft longitudinally of the head and
positioned and adapted to be in substantially tan
frame, means inter-connecting the table and
gential contact with said head and having a sup
frame for oscillating the table during the recip
porting shaft upon which said sector table is freely
rocating motion, and means for sliding said head
rotatable, means for reciprocating the shaft longi
from a position over said table to a position clear 65 tudinally of the head and frame comprising a
thereof.
pair of roller carriages mounted in elongated slots
3. In a cutting and creasing machine, a frame,
and supporting said shaft at its ends for free mo
a head mounted thereon, an arcuate sector table
tion longitudinally of said slots and a crank arm
positioned and adapted to be in substantially tan
drive for reciprocating said carriage in said slot.
gential contact with said head and having a sup 70
9. In a cutting and creasing machine, a frame,
porting shaft upon which said sector table is
a head mounted thereon, an arcuate sector table
freely rotatable, means for reciprocating the shaft
positioned and adapted to be in substantially tan
Without rotation longitudinally of the head and
gential contact With said head and having a sup
frame, and means interconnecting the table and
porting shaft upon which said sector table is free
frame for oscillating the table during the recipro 75 ly rotatable, means for reciprocating the shaft
2,405,868
7
8
longitudinally of the head and frame comprising
vsaid carriage parallel tothe surface of said head,
a pair of roller carriages mounted in elongated
slots, means supporting said shaft at its ends in
and means inter-connecting said head and said
table for oscillating the table during translatory
said carriages comprising toggle joint means hav
motion of the carriage.
11,. "in a cutting and creasing machine, la frame,
a head having a ñat surface mounted thereon,
means for fixing the head in a desir-ed position
ated the shaft will be lowered, lowering the sector
for operation, an arcuate sector table in substan
table from said head and a crank arm drive for
tially tangential contact with said head, a shaft
reciprocating said carriage in said slot and means
operative at the end of the stroke for raising 10 supporting said table, a carriage journalling said
shaft and permitting free rotation of the same
or lowering the shaft.
and said table, said machine having a single .drive
10. In a cutting and creasing machine, a frame,
source comprising means providing translatory
a head ~having a flat surface ‘mounted thereon,
motion for _said carriage parallel to the surface
an arcuate sector table in substantially tangential
of said head, and means interconnecting said
contact with said head, a shaft supporting said
head and said table for oscillating the table dur
table, a carriage journalling said Shaft and per
ing translatory motion of the carriage.
mitting free rotation of the same and said table,
ing .an eccentric element formed as an extension
of` said shaft whereby When said toggle is oper
said ,machine having a single drive source com
LLOYD A. WHITTAKER.
prising means providing translatory motion for
HAROLD F.- PETERSON.
Документ
Категория
Без категории
Просмотров
0
Размер файла
866 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа