Note: Descriptions are shown in the official language in which they were submitted.
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rnhe invcntion x~la-t~s to an a.pparatus for batch~wise dra~Jing~off
of a cast b æ or strip from -the die Oe a horizontal bar casting installation and
for rollix~g up the utrip lnto a coil, the app~ratus having a-t leas-t one
conveying device~ preferably a conveyor roller, and a preæsure roller
co-operating wi-th it, for ~rit}ldrawal o~ the strip ~rom the die~ a bendlng
roller directl~ behind coming in-to engagement with the s-trip and
adjustable transversely thereto for the rolling up of the strip into a
coil9 as well as a severing device for separating the strip into lengths.
Xitherto -there ~rere used for the withdrawal of the s-trip
from -the die on the one hand and for the rolling up of -the strip on
the other hand sep æ ate con~eying devices, ~hich i~ ac¢ordance with
their function in the casting line were placed one behind the other.
For the severing of the ætrip a severing device travelling with the
cast strip were provided between the two conveying devices me
first conveying device in this arrangement had the purpose of drawing
the strip from the die with that rhythm which ensured an optimum
quali-ky and quantity of productionO ~he second conveying device
served for rolling of the strip into a coil
~he purpose underlying the in~ention is to simplify thereb~
cheapen the cons-truction of the known dra~off and roll-up devices.
As was explained above, previously two conveying devices) especially ~JO
convayor rollers each co-operating with a respective pressure roller, were
provided. ~ne severing device for the separating of the cast strip
into lengths was arranged between the first and the second pair of
rollers. After the cutting off of the strip the first pair of rollers
in the direction of advance of the strip served to draw the following strip
end out of the die, whereas the second pair of rollers served to
advance, especiall~ to roll Up7 the leading s~rip end. ~he transversely -
displaceable bending roller ser~ing for the rolling up or coiling of the
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~trip i~ arr~n~ed at n ~rnall distc~ce behind the seco~d pair of roller~.
~hereby the strlp, ~hortl~ after it has lcft the second pair of rollers,
c~n be given the curvatu~e required ~or rolling it up into a coil. An
arrangement of -the bending roller at a greater distance from the second
pair of rollers i~ on this account not pos~ible, since then the lead~ing
part of the strip over the len~th of the spacing of the bending roller
from the second pair of rollers ca~not be curved but remains s-traight,
as a result of ~rhich re~ular rolling up into a coil would no longer be
possible, since for this purpose a uniformly curved leading piece is
necessary.
If, for simplification of the installation, one seeks to arrange
only one pair o~ rollers, the aevering device comes after the bending
roller and severs the strip after the bending roller has fallen behind
the latter, so that the withdrawal of the strip from the die is then
possible, it is true, but the disadvantage arises that after severing
of the strip a straight piece of strip remains between the pair of rollers
and the severing device, ~rhich upon renewed engagement of ~he bending
roller can no longer be curved and thereb~Y also hinders orderly rolling
up of the stxip. ~he bringing of -the severing device between the pair of
rollers and the bending roller is not possible on this account9 since
then a greater ~pacing is reql~red~ which~ a~ wa~ set out above~ must
be a~oided.
~aving regæ d to the foregoing explanation the requirements
arise that while only a single pair of rollers should strict~Y be
necessary, on the one hand the bending roller should be arranged at
the smallest possible separation after the pair of rollers and on
the other hand the severing of the strip should be possible l~kewise at the
smallest possible separation after the pair of rollers.
~n accordance with the invention the problem of col~letely
meeting both the above-stated requirements in an apparatus of the
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type stated in the introd~lction is solved by using the circumstance
that the bending roller and the severing device have to come into
operation not simultaneously but one a~ter the other.
The solution of the problem consists in accordance with
the invention in that the bending roller is shiftable ~ut of the
region directly behind the conveying device and that the severing
device, which is displaceable in a known manner, is shiftable into
this region.
Preferably, in order to achieve this, the bending roller
and the severing device are mounted on a slide which, for example
by means of a hydraulic cylinder, is displaceable in the strip di-
rection into that position in which the severing device is direc-
tly behind the conveying device, so that the s-trip can be separa-
ted directly behind the latter.
According to further preferred characteristics the con-
veying device consists of a driven conveyor roller and a pressure
roller engaging the other side of the strip in the region of the
conveyor roller and the pressure roller is also mounted on the
slide, while the displacement path of the slide is approximately
equal to the separation of the bending roller from the conveying
roller. Further, the slide can be provided in a known manner
with at least one pair of clamps, whose clamps, for example hy-
draulically, can be brought into engagement with points on the
cast strip which lie opposite one another, whereby the slide can
be coupled with the cast strip and the severing device follows the
drawing-off movement of the cast strip during the severing.
By means of such an apparatus it is therefore possible,
with a single, motor-driven conveying device, to effect both the
drawing-off of the cast strip from the die and also the rolling
up of the drawn-off strip into a coil, without thereby obtaining
undesirable long, straight leading parts of the cast strips.
The invention is particularly directed toward an appa~
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ratus ~or coil.ing strip material comprising advancing means ~or
the strip, a bending roller to ds-flect the strip advanced by th0
advancing means and thereby cause it ~o roll up into a coil, the
bending roller being shi~'table transversely to the plane o~ the
strip, and a severing device for separating the strip after -for-
mation of a coil. The bending roller is movable between a work-
ing position immediately downs-tream of the advancing means and an
idle position and the severing device is movable into the working
position when the bending roller is removed.
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~n embodiment of -the inve~tion is f~rther expl~ln~d ln ~,hat
follows ~rith reference to the clra~rin6rs~ in ~7hloh
Fig, 1. is a schematic side elevation of an apparatus in
accordance with the inventlon.
Fig. 2. is a similar side eleva-tion in another operating
position.
Fig. 3. is a detail, in ~ide eleration, enlarged, and
Fig. 4. is an elevation and partiallg a section on the line
A-A of Fig.2.
Qn a machine frame 1 there are arranged above t,he oast s-trip
20 two hydraulically or pneumatic~lly drivable conveyor rollers 2, 3 and
below the strip two non-driven pressure rollere 4, 5, the rollers 2 and
3 co-operating t~th tha rollers 4 and 5, respectively. ~krther there
is arranged under the strip 20 a hydraulically or pneumatically vertically
shiftable bending roller 6. Addi-tionally there is provided on the
~rame 1 a longitudinal slide or carriage 8 which i8 displaceable in
the direction of the strip by means of a hydraulic cylinder 7, which
carries the pressure roller 5 and the bending roller 6 and fuxthermore
is equipped ~Tith a transverse slide 9 on ~lhich a severing tool, for
example a saw disc 11, together with a drive motor~ is provided. ~he
transverse slide 9 can be displaced across the stxip bg an associated
hydraulically - operable advan¢e and retract cyl~nder 10. Further there
are provided on the sl~de 8 a clamping device 16 (Figs 3 and 4) for
~i~m connection with the cast strip 20 of the longitudinal slîde 8 ~hich carxie~the severing device 11 and on the frame 1 t~o rollers 12 ~or the support of the
rolled-up coil, as well as feed rollers 13 and 14 lging against the sides
o~ the latter and a roller track 15 connected to -the app æ atus ~or -the
reception o severed coils.
~y arranging the bendlng roller 6 and the severing devioe 11
on the longitudinal c æriage 8 the possibilit~ is obtai~ed of effecting
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the engagement of the bending roller 6 and also the ~evering of the
s-trip directly behind the conveying roller 37 ~hereby the ~tr~l~ht end
~tub o~ -the strip ce~ be k~p-t very short in the manner re~uired for
the rolling up of a ~resh coil.
me working procedure i9 as ~ollous:
At the commencement of cas-ting the slide 8 is in the marking
position sho~ in Fig. 1, but the bending roller 6 remains in the
lowered position until a leading edge of the cast s-trip 20 has left
the pair of rollers 3 2nd 5, so -tha-t the ca~t band i9 gripped by this
conveying device. ~8 aoon as this is the case9 the leading edge is
removed and the bending roller 6 is positioned by rai~ing it so that
the rollinb~ - up begins.
After reaching the desired coil weight ~thich for example
is reached with five to ten turns of the cast strip, the bending roller
6 is again lowered to the level of the pressure roller 5, whereupon the
ooil rolls out onto the roll track 15. After the lowering of the bending
roller 6 the longitudinal slide 8 is driven by the hydraulic ¢ylinder
7 into the severing position of ~ig.2, whereby the severing device 11
come~ to lie dire¢tly behind the conveyor roller 3 and the bendlng
roller 6 come~ to lie generally opposite the conveyor roller ~. qhe
dra~ng-off of the strip continues thereby unaltered. As soon as the
desired length of the straight end piece is rea¢hed, tha longitudinal
carriage is automatically by means o~ an end switch or by means of
light barrîers a-ttached forcibl~ to the ca~t strip 20 through the
clamping devices 16 (visible in ~igs 3 and 4), the severing device 11
is set in operation by energising it3 drive motor, and the transverse
sliae is put in motion by loading the associated hydraulic advance cylinder
1 O. mus the ~trip is severed4
mr~ugh the clamping o~ the longitudinal ~lide 8 to the cast
strip~ the severing device 11 follows the intermittent movement of
the cast strip during the cutting operation. Qs ~oon as the cast strip
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ha~ b~en ae~ered., -the MOtor o:~ -th~ se~ering de~ice i8 F~titohed off, -~he
-tr~n~versc slide 9 .~ rctracted, -the clc~mpin~ devices 16 c~re opened,
and the coil ~rith it~ ~tral~ht s-trip end 1~ a.dvanced by a roller drive
tô the end positlon o~ the roller track 15 sho~ in Flg. 1. at the
right. At the ~me time the longitudinal slide 8 is returned by means
of the hydraulic cylinder 7 to its starting position according to
Fig.1. Thereupon the renewed rolling-up of the s~rip in the descrlbed
mc~nner oan be begun.
For clarification it is remarked that ~he pair of rollers 2 7
4, whioh is coupled direct~ with the pair of roller~ ~, 5 only
serves to assi~-t the pair of rollers ~,5~ cand ~undamentally i8 not
nece~sary.
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