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Патент USA US2405077

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JU1Y730, 1946-
E. J. voN DER HEIDE
2,405,077
VULCANIZER
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Filed Sept. 4, 1945
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Elmer .7. vozzderh‘ez'de
INVENTOR.
AT TORNEY.
July 30, 1946»
E., J. VGN DER HEIDI-z
2,405,077 '
VULCANIZER
Filed Sepi. 4, 1943
2 Sheets-Sheet 2
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Elmer .7.' von der-H221' de
INVENTOR
ATTURIÈEY.
Patented July 3o, 1946
2,405,077
UNITED ‘STATES iÜÀTENT OFFICE
2,405,077
VULCANIZER
Elmer J. von der Heide, Akron, Ohio
Application September 4, 1943, Serial No. 501,200
3 Claims.
(Cl. 18-6)
2
My invention relates to vulcanizers.
One method commonly employed in the com
mercial vulcanization of rubber articles consists
in placing the rubber-charged molds into a steam
tight container, commonly known as an auto
clave, where they are directly exposed to the heat
of live steam under pressure for predetermined
time periods. Access to the auto-clave is ordi
narily had through a suitable door provided at
one or both ends thereof.
With the equipment heretofore used the proc
ess is intermittent. After each vulcanizing peri
od the steam pressure within the auto-clave must
be exhausted before a door can be opened to per
clave shown is of a type that is ordinarily closed
at both ends by circular doors (not shown)
adapted to seat within rings I3 provided at the
opposite ends thereof, each ring being equipped
with the usual series of inturned lugs I4 for re
leasably locking the doors in pla-ce.
In this instance the doors are omitted, the
ends of the auto-clave being permanently closed
by devices through which rubber-charged molds
l() may be admitted thereto and discharged there
from without releasing the steam pressure there
in. Devices for these purposes may assume var
ious forms but those shown have proven satis
factory. Each comprises a cylinder I5 or I5’
mit withdrawal and replacement of the molds 15 having a short laterally projecting throat I6 in
therein, and after each charge of fresh molds the
termediate the ends thereof adapted to seat with
steam pressure must be reestablished to provide
in one of the end rings I3. A series of outwardly
the necessary vulcaniz-ing temperatures. Each
projecting lugs I1 on each throat are arranged to
actual vulcanizing period is ordinarily relatively
pass between the lugs I 4 of the ring I3, as indi
short and the mold replacement periods frequent 20 cated in Fig. 4, and to interlock with and behind
thereby entailing a considerable loss of steam
the latter upon rotation of the throat through a
and of valuable timeOne object of the present invention
to pro
vide a method and means for efîecting a substan
tially continuous Vulcanizing process.
small angle~ In this manner each cylinder l5 or
I 5’ is releasably but securely attached to an end
of the auto-clave Iii, a suitable packing I8 being
25 preferably provided to seal the joint therebe
Another object to to provide means for admit
tween.
ting articles to a steam charged container with
Each cylinder I5 or I5’ constitutes a housing
out releasing the steam pressure therein.
and guide for a piston-like shuttle IS lengthwise
Another object is to provide means for with
reciprocable therein. Each shuttle I9 is prefer
drawing articles from a steam charged contain 30 ably shaped to provide two end chambers 20 and
er without releasing the steam pressure therein.
2l separated by an intermediate portion 2ï and
Another object is to provide a method and
suitable means, such as piston rings 23 adjacent
means for subjecting a substantially continuous
the opposite ends of each chamber, coact with
succession of articles to steam under pressure.
the interior of the cylinder I5 or I5' to seal the
Other more specific objects and advantages . latter against escape of steam therethrough.
will appear, expressed or implied, from the fol
In the device shown each chamber 20 and 2I
lowing description of an illustrative embodiment
has an opening 24 at one side thereof, adapted
of the present invention.
to register with the throat I5 alternatively and
In the accompanying drawings:
each also has a second opening 25 at the opposite
Figure 1 is a horizontal longitudinal sectional
side thereof adapted to register with one of the
View of a vulcanizer constructed in accordance
openings 26 or 2l in its guide cylinder Whenever
with the present invention.
the opening 2@ of the other is registered with the
Figure 2 is a vertical longitudinal sectional
throat I6.
view of the charging device shown in Fig. 1.
Chambers 20 and 2I in the cylinder I5 consti»
Figure 3 is a vertical sectional view taken 45 tute receiving chambers through which the rub
along the line 3_3 cf Fig. 1 on a larger scale.
ber-charged molds a may be ad-mitted to the
Figure 4 is a sectional view taken along the
auto-clave I0. For instance, with the chamber 2D
line 4-4 of Fig. 3.
in the position shown in Fig. l it may receive a
Figure 5 is a diagrammatic view of a fluid ac
mold
through the opening 25, and then the shuttle
tuating system employed.
I9 may be shifted to register the chamber 20 with
The vulcanizer selected for illustration in
the throat I6 through which the mold may be
cludes a conventional auto-clave I0 in the form
transferred into the auto-clave I3. Likewise, with
of a horizontal elongated cylinder supplied with
the shuttle I9 in the position last described the
steam under pressure through a pipe I I and hav
other chamber 2I is in position to receive a mold
ing an exhaust and drain pipe I2. The auto
through the opening 2l, and when the shuttle is
:2,405,077
3
shifted into the position first named, this chamber
2| registers with the throat I6 and the mold
therein may be transferred into the auto-clave.
Provision is made for eii‘ecting the transfer oi
the mold to the auto-clave as each chamber is
registered therewith. In this instance a pusher
in the for-m of a piston rod 28 is utilized for this
purpose. The rod 28 is shown connected to a pis
ton 29 reciprocable in a cylinder 30 attached to
the cylinder I5. The rod 28 is disposed coaxially
of the auto-clave I0 and works through an open
ing 3| in the side wall of cylinder I5. The ar
through the openings 26 or 21, might prove dan
gerous or at least annoying to the attendants
serving those openings. In order to avoid this
discharge ducts 39 are preferably provided in the
rear wall of each oi the cylinders I5 and I5'
through which the steam pressure may escape
as each chamber approaches an opening 25 or 21.
Various changes may be made in the embodi
ment of the invention hereinabove specifically
rangement is such that whenever one of the
chambers 20 or 2| is registered with the throat
I6, the piston 29 and rod 28 are actuated to push e
described without departing from or sacriñcing
the advantages of the invention as deiined in the
appended claims.
the contained mold through the throat and onto
I claim:
1. The combination with an elongated vulcan
the track or runway 32 in the auto-clave, and>
as each additional mold is thus forced into the
auto-clave it forces ahead of it the succession of
molds previously admitted thereto. rl‘he molds
are thus advanced step-by~step- through the auto»
clave.
The shuttles I9 in the cylinders I5 and I5' are
actuated substantiallysimultaneously so that one
4
It will be noted that, as each chamber 28 or 2|
passes from communication with the auto~clave
I0, it carries with a charge of steam received
therefrom, a charge which, if permitted to issue
izing chamber containing steam under pressure,
.
of separate means for admitting articles to one
end of said chamber and for withdrawing articles
from the other end of said chamber without re
leasing the steam pressure in said chamber, said
article admitting means comprising a housing efrtending across an end of said chamber and hav»,
or the other of the chambers 2|) and 2| in the
ing an intermediate side opening communicat
latter is aligned with the auto-clave I0 and in a
ing therewith, a member in said housing forming
position to receive the leading mold of the suc
two separate article receiving compartments
cession of molds at each advance thereof through
therein, said member being reciprocable to align
the auto-clave. For instance, with the shuttle
compartments with said opening alterna»
I9 of cylinder I5' in the position shown in Fig. 1, 30 said
tively, and means reciprocable in a direction
the chamber 2| thereof is positioned to receive a
lengthwise of said chamber for transferring ar
mold from the auto-clave, as the succession of
ticles from an aligned compartment to and
molds in the latter are advanced by the pusher
through said chamber.
28; and when this shuttle is shifted to position
2. The combination with an elongated vulcan
the other chamber 20 in alignment with the auto
izing chamber containing steam under pressure,
clave, the chamber 2| registers with the opening
of separate means for admitting articles to one
21 in the cylinder I5' through which the mold
end of said chamber and for withdrawing articles
within chamber 2| may be withdrawn.
from the other end of said chamber without re~
The shuttles I9 may be actuated by any appro
leasing the steam pressure in said chamber, each
priate means. In this instance each is hydraul
of said means comprising a housing extending
ically actuated by a piston 33 or 33’ arranged in
across an end of said chamber and having an in
a cylinder 34 or 34’ mounted on and extending
termediate side opening communicating with said
lengthwise of its cylinder I5 or I5’. Each piston
chamber, a member in each housing forming two
shown is provided with tail rods 35 separately
separate article receiving compartments there45
connected to the opposite ends of the shuttle I9
' in, each of said members being reciprocable to
through cables 36 trained over suitable pulleys
align said compartments with said opening alter~
31. Liquid under pressure from an appropriate
natively, and each of said housings having addi~
source 38 is supplied to both cylinders under
tionalopenings affording access to said comparte
control of a suitable valve 39 in such manner that,
ments alternatively, and means reciprocable in a
with the valve in one position, the two pistons 50 direction lengthwise of said chamber for ad
33 and 33’ and their connected shuttles I9 are
vancing articles from an aligned compartment
simultaneously actuated in opposite directions,
into and lengthwise of said chamber.
and in the other position of the valve both are
3. 'I‘he combination with an elongated vulcan
simultaneously actuated each in a reverse direc
izing chamber containing steam under pressure.
55 of separate means for admitting articles to one
tion.
It will of course be understood that the steam
end of said chamber and for withdrawing articles
pressure within the auto-clave III is continuously
from the other end of said chamber without reM
maintained, this being rendered possible by the
leasing the steam pressure in said chamber, each
means provided for admitting and discharging the
oi said means comprising a housing extending
molds without opening the auto-clave. By reason 60 across an end of said chamber and having an in
of this arrangement the vulcanizing process is
termediate side opening communicating with said
continuous, each mold being subjected to the
chamber, a member in each housing forming two
direct head of the steam throughout its passage
separatearticle receiving compartments therein,
from its charging chamber 20 or 2| to its dis
each of said members being reciprocable to align
65
charge chamber 20 or 2|, the vulcanizing period
said compartments with said opening alterna«
for each mold being determined by the time con
tively, and each of said housings having additional
sumed during that passage and consequently by
openings affording access to said compartments
the length oi the auto-clave and by the frequency
alternatively, means for simultaneously recipro
of operation of the charging and discharge means.
cating said members, and means reciprocable in
In order to shorten the vulcanizing period for 70 a. direction lengthwise of said chamber for ad
some special molds an auxiliary discharge unit
vancing articles from an aligned compartment
similar to that above described may be provided
into and lengthwise of said chamber.
intermediate the ends of the auto-clave or be
E. J. voN DER HEIDE‘.
tween sections thereof and operable to discharge
those particular molds at an intermediate point.
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