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Патент USA US2132270

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Get. 4, 1938.
B, F. E. N\’LA1\EDER
3132370
MACHINE FOR PRODUCING FORM PIECES FROM WET FIBROUS MASS
Filed Jan. 8, 1955
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Oct. 4, 1938.
B, F 'E_ NYLANDER
2,132,270
MACHINE FOR PRODUCING FORM PIECES FROM WET FIBROUS MASS
Filed Jan. 8, 13156
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B. F. E. NYLANDER
2,132,270
MACHINE FOR PRODUCING FORM PIECES FROM WET FIBROUS MASS
Filed Jan. 8, 1956
3 Sheets-Sheet 5
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Patented Oct. 4, loss
2,132,276
UNITED STATES PATENT OFFHCE ,
2,132,270
MACHINE FOR PRODUCING FORM PIECES
FROM WET‘ FIBROUS MASS
Birger Fredrik Engelbrekt Nylander, Hernosand,
Sweden
Application January 8, 1936, Serial No. 58,046
In Germany May 27, 1935
1 Claim.
The present invention refers to machines for
producing form pieces from wet ?brous mass for
instance wood-pulp, which consist of an expansible, perforated core and a contractible,
5 perforated form arranged outside of the former,
which consist of pieces slidably connected with
each other, and between which the mass is adapted to be led in and compressed, watered-down
and dried by the expansion of the core and con10 traction of the form and the introduction of a
warmed pressure-medium, for instance vapour.
One of the objects of the invention is the provision of a device wherein the expansion of the core
is caused by the pressure-medium through the in-
(CI. 92-62)
outside are provided with conical shoulders,‘ "
against which the ring 8 presses in immersed
position. In order that the part Hi shall not
lie against the parts of the form 2 until these
have been brought together, the ring 8 is con
nected with the plunger 9 by spring arrange
ments 8 i». In the form 2 the core I2 is arranged
and ?xed to a tube i3, which can be raised and
lowered. The tube i3 is worked upon by by
draulic means and its interior is connected with 10
a tube M, through which steam can be intro~
duced into the interior of the core l2. The mass
is introduced through a tube 55 ?xed t0 the 1111
derside of the stand 5, which tube is connected
15 troduction of the same into the core.
with a mass pump it and provided with a block- 15
The contraction of the form is effected in that
a conical ring or the like, which is provided with
a part forming the roof of the form, is pressed
over conical shoulders on the form. The parts
20 of the core and the form are normally taken
valve ll. Between the tube is and the stand
there is besides arranged a slidable socket 93,
which also is worked upon by hydraulic pressure.
The core i2 consists of perforated plates 69 mov
able against and from each other, which are 20
25
30
35
40
45
50
apart or compressed by spring arrangements in
normally brought together by springs 2K8 ar
the core and outside the form.
ranged in the core.
The form is at its inside provided with outletchannels for the water forming grooves, outside
which perforated plates are arranged.
Under the interspace between the core and the
form in the stand of the machine outlet-channels
are arranged for the water.
An embodiment of the invention is shown in
the annexed drawings. Fig. 1 shows the machine
schematically in vertical longitudinal section in
closed position. Fig. 2 shows the same in opened
position. Fig. 3 shows the core in vertical section in contracted position. Fig. 4 shows the
same in horizontal cross-section in contracted
position. Fig. 5 shows the same in horizontal
cross-section in expanded position. Fig. 6 shows
the form in horizontal cross-section on one side
in closed and on the other side in open position.
In the stand I the form 2 is arranged, which
consists of four parts 3 (Fig. 6) movable toward
and away from each other. The parts 3 of the
form 2, are at their inside provided with vertical
conduits 4, outside of which perforated plates 5
are ?xed. The parts 3 are slidable in guide-bars
in the stand I and are normally kept apart by
means of springs ‘I ?xed at standards 6. The
parts of the form are pressed against each other
by means of a conical ring 8, which is ?xed to
the lower end of a plunger 9, which is actuated by
hydraulic pressure. Over the conical ring 8 a
part I!) is arranged, which on immersion of the
ring 8 forms a roof for the parts 3 of the form 2,
tween the plates l9 angle-pieces 2i are arranged,
which slide in guide-bars 22 ?xed to the plates.
When a form piece is to be produced in the
machine the ring 8 is ?rst brought down to the
position shown in Fig. 1 by hydraulic pressure,
whereby the parts of the form are brought to
gether. After this the valve IT is opened, where
by the mass from the pump it is pressed into
the tube l5 and enters the interspace between
the core I2 and the form 2. When this inter
space is ?lled with mass, which has partly been
watered-down by the pressure, whereby the water
partly goes out through the tube l3 and partly
through the channels 23 in the stand i, the pump
It is stopped, and super?uous mass ?ows back
to the pump. After this the valve l'i is closed
and the socket is is brought up to the position
shown by lines and dots, so that the interspace
between the core l2 and the form 2 forms a
closed room except for the perforations. Now
overheated steam is led in to the tube I3 through
the tube M and at the same time into the interior
of the. core l2 through the channels 24, whereby
the steam presses the parts of the core i2 out
wards and at the same time waters down, warms,
dries and presses the form piece, what can take
place, as the holes of the perforations are very
small.
After the form piece has been watered down,
dried and pressed to the desired degree, the sup—
ply of steam through the tube M is stopped,
, and which at its underside is shaped in a similar
55 Way as the inside of the parts 3, which at their
At the collision-places be
25
30
35
40
45
50
whereby the parts of the core i2 are contracted
by the spring arrangements 20, so that the form 55
2
2,132,270
piece 25 is loosened from the core.
The ring 8
is then brought up again, whereby the parts of
the form 2 of the spring arrangements 1 are
brought apart, so that the form piece 25 is loos
form to maintain the same in the contracted po
sition while a form piece is being made, means
ened. Now the case I 8 is brought upwards again,
whereby the form piece is lifted up in the ma
maintaining said form in the expanded state
chine and can be removed from the same.
when the second-mentioned means are devoid of
The form piece produced by this machine,
which is adapted to work automatically, shows
10 quite smooth surfaces inwardly as well as out
wardly and has besides a dryness of at least 80%,
a result, that cannot be arrived at by the ma
chines known hitherto, where form pieces either
get a rough surface or also have to be dried
15 after the forming by an expensive‘and time
wasting procedure.
It is evident that the invention may be varied
in many respects without departing from the
idea on which it is based.
20
tracted position, each of said plates being pro
vided with small perforations; an expansible and
contractible form, means adapted to engage said
,
Having now described my invention, what I
' claim is:
A machine for producing pieces from a wet
?brous mass, comprising a core comprising a
plurality of plates movable relatively to each
25 other, whereby said core may be expanded and
contracted, and resilient means connected with
said plates for maintaining said core in the con
contact with said form, means supplying a wet
?brous mass in the space between said core and
said form, means connected with said form for
removing a fluid therefrom, and means‘ connected
with said core for supplying a heated fluid under
pressure into the interior of said core, whereby
said fluid will press against the non-perforated
portions of said plates to maintain said core in
the expanded position and to heat and dry said
wet ?brous, mass, whereby a form-piece is pro
duced, said core being movable by the ?rst-men
tioned means from the expanded position to the
contracted position when the pressure of said
?uid is diminished, and said form being movable
from the contracted position to the expanded po
sition when the second-mentioned means are
moved out of contact with said form, thereby fa
cilitating the removal of said form-piece.
BIRGER FREDRIK
'
ENGELBREKT NYLANDER.
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