close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2117665

код для вставки
my 17, 1938.
G, N, HUGHES
2,117,665
SHEET OPENING MACHINE
Filed Jan, 13, 1956
2%,
47
_
{45/534537 _
‘
2 Sheets-Sheet 1
47
INVENTOR
é’uy 1V. Hy/qhes
_ B»Y%é/%%M7
'
ATTORNEY
May 17, 1938.
‘
G, N, HUGQES
‘
2,117,665
SHEET OPENING MACHINE
Filed Jan. 15, 1936
Z’
mmm-
.
I:
2_ Sheets-Sheet 2
' r"?
1/6
.
3
ZBéé?“ |-—————
INVENTOR
- . “M ?t’éM
ATTORNEY
2,117,665
Patented May 17, 1938
UNITED STATES PATENT OFFICE
2,117,665
SHEET OPENING MACHINE
Guy N. Hughes, Gadsden, Ala.
Application January 13, 1936, Serial No. 58,913
8 Claims.
My invention relates to sheet opening machines
and more particularly contemplates the provi
sion of a machine for use in sheet steel rolling
mills to separate sheets from each other after
in they have been reduced to their correct size in
packs of two, four, six, or eight sheets.
In the rolling of steel sheets, it is customary
to reduce the sheets from billets to their ?nished
dimension in two operations. The ?rst operation
10 consists in reducing the billets to sheet form, in
which the sheets are of considerably greater
thickness than the ?nished product.
The sec
ond operation consists in super-imposing several
sheets upon each other to form a pack of con
l-l CH
siderable thickness, and then roll the pack until
the sheets have been reduced to their ?nished
dimension. After the pack has been thus rolled,
2 .O
the several sheets therein have a tendency to
stick to each other. In the opening of some packs
the sheets may be readily separated from each
other, but at times the sheets become tightly at
tached'to each other and are known as “stickers”.
It has heretofore been extremely dif?cult to open
“stickers” without tearing or otherwise destroy
25 ing the sheets and usually involved great labor
and expense.
While various types of machines
have been devised for the purpose of separating
“stickers”, it is well known to those skilled in
this art that they have not, heretofore, proven
30 satisfactory and that “stickers” are at the pres
ent time separated manually by means of labor
ers employing swords to cut (or wedge) the stick
ers apart.
'
It is therefore an object of my invention to
35 provide a machine adapted to separate sheets of
steel from each other more rapidly and at less
expense than any other machine or method here
tofore known to me.
My invention further contemplates the provi
4:0 sion of a machine provided with a relatively stiff
knife which is driven between the sheets to be
separated by means of sharp blows imparted to
the back edge thereof.
Briefly my invention comprises a knife hori
(01. 29-517)
rotary hammers when the sheets are tightly en
gaged to each other, thereby causing the back
edge of the knife to be struck short, hard blows
to separate the sheets.
Suitable means are pro
vided for varying the intensity of the hammer 5
blows imparted to the back edge of the knife.
Aymachine embodying features of my inven
tion is illustrated in the accompanying drawings,
forming part of this application, in which:
Fig. 1 is a plan view of my improved sheet 10
opening machine;
Fig. 2 is a side View of same;
Fig. 3 is a fragmentary view illustrating a mod
i?ed form of my invention in which, electric ham
mers are provided to impart sharp blows against 15
the back edge of the knife; and
Fig. 4 is a diagrammatic view illustrating the
operation of my machine in separate sheets from
each other.
Referring now to ‘the drawings for a better
understanding of my invention, I show my ma
chine comprising a frame 1, which may be of
any suitable construction. A pair of delivery
rolls 8 and 9 are journaled in the front of the
machine and a pair of exit rolls II and !2 are
journaled in the back of the machine. The upper 25
rolls 8 and II are provided with bearings l3 and
I4, respectively, which are mounted for vertical
movement in slots l6 formed in the frame of the
machine. Compression springs I‘! are provided 0
to yieldably resist an upward movement of the
upper rolls 8 and H, and the tension thereof
may readily be adjusted by means of adjusting
screws l8.
Mounted on the frame 1 between the delivery
rolls and the exit rolls I provide a knife H) which is
formed of relatively thick steel adapted to re
sist ?exing or bending and which is sharpened
along its forward edge at 20. Guide pins 2| are
provided oh the frame of the machine and pro 40
ject upwardly and through slots 22 formed in
the ends of the knife. Springs 23, having their
one ends secured to the frame of the machine
and their other ends secured to the knife,
45
45 zontally mounted on a frame for backward and
are provided to yieldably resist a rearward move
forward movement. The forward edge of the
knife is sharpened for‘ insertion between sheets
in a pack. The pack is moved toward the knife
by means of a pair of delivery rolls provided in
5 O front of the knife, and the separated sheets are
removed from the machine by means of a pair
of exit rolls. As the knife acts through the pack
to separate the sheets, it is normally held in its
ment of the knife.
Mounted for horizontal rotation adjacent the
rear edge of the knife, and at each end thereof,
I provide a hammer 3| which comprises a center
piece 32 secured to a shaft 33, and hammer seg- 50
ments 34 pivotally connected at 36 to the center
piece. The hammer shafts 33 are journaled in
bearings 35 and carry, secured to their lower
ends, bevel gears 31 for engagement with gears
38 driven by a motor 39. The lower exit roll is 55
forward position by tension springs but is adapted
55 to move rearwardly and into a contact with
2.
2,117,665
driven by a motor 42 through a driving gear 43,
driving chain 44, and driven gear 46; and the
lower exit roll I2, in turn, drives the lower de
livery roller 9 by means of a driving sprocket 41,
chain 48 and driven sprocket 49.
The knife is slotted at 5| to receive stop ?ngers
52 which are pivotally mounted on the frame of
the machine at 53.
An adjustment cam 54 is
and a separate means uncoupled with respect to
adapted to be rotated by means of handles 55 to
the separator for driving said separator into the
change the position of the stop ?ngers and to
thereby vary the intensity of the blows imparted
to the back edge of the knife by the hammers 3|.
It will also be observed, by referring to Fig. 1 in
the drawings, that the knife I9 is disposed at an
angle with respect to the rolls in order that the
sheets may be separated by a shearing action
which has been found to expedite the operation.
Referring now to Fig. 3 in the drawings, I show
stuck sheets in a direction opposite to the move
3. A sheet separating machine for opening a
moving sheet pack including a sheet separator
movable with the sheets only upon engagement
with stuck sheets, and means to impart sharp
hammering blows upon the separator to drive the
a modi?ed form of my invention in which elec
same in a direction opposite to the movement
tric hammers 6| are employed to impart blows
to the back edge of the knife 62. When “stick
ers” are passed through the machine they over
come the resistance of the springs 63 which hold
of said sheets only when the same moves‘ the
separator in contact therewith.‘
the knife in its forward position and cause it to
In the separation of sheets by means of my
improved apparatus, the pack 6 is moved towards
the knife l9 by means of the delivery rolls 8 and
9. One corner of the forward edge of the pack
is then opened by hand to permit entrance of the
knife after which, the opened ends of the sheets
35 are engaged and drawn together by means of a
pair of tongs and manually drawn towards the
exit rolls H and i2 for engagement therebetween.
The delivery and exit rolls are operated at the
40
upon by said separate means.
2. A sheet separator machine for opening a
moving sheet pack including a reciprocable sheet
separator movable in the direction of movement
of the sheets by engagement with stuck sheets,
journaled on the frame of the machine for en
gagement with each stop ?nger. These cams are
move rearwardly thereby closing the switch 66
to energize the hammers.
30
sheets, and separate means uncoupled with re
spect to the separator for moving said separator
in the opposite direction only when the separator
is moved by stuck sheets into position to be acted
same peripheral speed which may readily be var
ied to suit conditions.
During the separating operation ‘the knife is
normally held in its forward position by the ten
sion springs 23; but, whenever the sheets are
tightly stuck together, the knife is forced rear
wardly against the stop ?ngers 52 and into po
sition to receive sharp blows fro-m the hammers.
The intensity of the blows imparted to the back
edge of the knife may be readily varied by turn
ing the adjusting earns 54. The springs 23 are of
50 suf?cient strength to resist a rearward movement
of the knife in the opening of most packs in
which event, the rotating hammers do not strike
the knife.
'
It is obvious to those skilled in this art that
55 other means than those shown may be employed
to strike the back edge of the knife and that
my invention is susceptible of various other
changes and modi?cations without departing
from the spirit thereof, and I desire therefore
60 that only such limitations shall be placed there
upon as are imposed by the prior art.
I claim:
1. A sheet separator machine for opening a
moving sheet pack including a reciprocable sheet
65 separator movable in one direction by stuck
ment thereof when said separator is moved into
operative relation with said separate driving
means.
15
4. In a sheet opening machine for opening a
moving sheet pack, a slidable knife normally 25
biased opposite the direction of movement of
the sheets, and means to impart sharp hammer
Ing blows to the back of the knife when stuck
sheets overcome the normal bias of the knife
and move the same rearwardly.
30
5. In a sheet opening machine for opening a
moving sheet pack, a slidable knife normally
biased opposite the direction of movement of
the sheets, means to impart sharp hammering
blows to the back of the knife when stuck sheets
overcome the normal bias of the knife and move
the same rearwardly, and means for regulating
the intensity of the blows imparted to the back of
the knife.
6. In a sheet opening machine, a frame, a 40
separator knife having a limited sliding move
ment thereon, and means for imparting sharp
hammering blows upon the rear edge of said
knife normally spaced therefrom and engageable
therewith only when the knife is moved rear 45
wardly.
7. In a sheet opening machine, a frame, a sep
arator knife having a limited sliding movement
thereon, resilient means to normally hold the
knife in forward position, means for feeding a
pack of sheets past said knife to open the same,
and means for imparting sharp hammering blows
upon the rear edge of said knife when stuck
sheets overcome the tension of the resilient
means and move the knife rearwardly.
55
8. A sheet separating machine for opening a
moving sheet pack including a sheet separator
movable with the sheets only upon engagement
with’ stuck sheets, and means to drive the separa
tor in a direction opposite to the movement of 60
the sheets only upon sheet conveying movement
of the separator into a position of operative re
lationship with said driving means.
GUY N. HUGHES.
Документ
Категория
Без категории
Просмотров
0
Размер файла
379 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа