Note: Descriptions are shown in the official language in which they were submitted.
l~Ub~
Thls Inventlon relates to a valve Insertlng apparatus
for Insertlng an Intake valve and an exhaust valve Into respec-
tlve valve guldes on the Intake slde and the exhaust slde ass-
embled on a cyllnder head of an englne such that thelr longltudl-
nal axes cross oblIquely.
~ t has been normal that assemblIng statlons for theIntake valve and the exhaust valve are provlded separately, so
that the respectlve valves may be Inserted In respectlve valve
guldes of a cyllnder head at the respectlve assembllng statlons.
For automatlcally effectlng thls Insertlng operatlon, an arrange-
ment Is dlsclosed In Japanese Patent ApplIcation PublIcatlon Sho
52-27866, for Instance, In whlch there are provlded, at each of
the two assemblIng statlons, a valve supply means for supplylng
each valve wlth Its head portlon upslde, a Jlg means havlng a Jlg
plate adapted to set thereon a cylInder head wlth Its surface on
a comblnatlon chamber slde belng the upslde, and a valve Insert-
lng unlt havlng a holdlng means for holdlng each valve detachably
and a valve push-ln means, so that when the Jlg ptate of the Jlg
means provlded on the assemblIng statlon for the Intake valve Is
swung such that the longltudlnal axls of the valve gulde on the
Intake slde of the cylInder head set thereon Is vertlcal, the
Intake valve supplled from the valve supply means for the Intake
valve Is Inserted Into the valve gulde on the Intake slde by the
valve Insertlng unlt provlded at that statlon, and then when the
Jlg plate of the Jlg means provlded at the assembllng statlon for
the exhaust valve Is swung such that the longltudlnal axls of the
valve gulde on the exhaust slde of the cylInder head set thereon
Is vertlcal, the exhaust valve supplled from the valve supply
means for the exhaust valve Is Inserted In~o the va~ve gulde on
the exhaust slde by the valve Insertlng unlt provlded at that
statlon.
Thls conventlonal type arrangement has the dlsadvantage
that, because the respectlve assembllng statlon for the Intake
valve and the exhaust valve are provlded separately, the same
requlres a greater d I stance, and It is therefore deslrable that
for effectlng an effectlve utlllzatlon of a space In a factory,
the Insertlng operatlon of the Intake valve and that of the
exhaust valve may be carrled out at a slngle common assembllng
statlon~
Accordlng to thls Inventlon In an apparatus of the type
wlth whlch an Intake valve and an exhaust valve are Inserted Into
respectlve valve guldes on the Intake slde and the exhaust slde
whlch are so assembled to a cyllnder head of an englne that the
longltudlnal axes thereof cross obllquely, there are provlded a
palr of valve supply means for the Intake valve and the exhaust
valve for supplylng respectlve valves wlth a head portlon of each
thereof belng the upslde, a Jlg means havlng a Jlg plate adapted
to set thereon the cylInder head wlth Its surface on a combustlon
chamber slde belng the upslde, and a valve Insertlng unlt for
both the Intake and exhaust valves whlch has a holdlng means for
detachably holdlng each valve and a valve push-in means, and the
Jlg plate whlch Is supported on a Jlg base to be swlngable about
a horlzontal shaft belng swlngable from Its horlzontal posltlon
to Its one-slde swung posltlon at whlch the longltudlnal axls of
the valve gulde on the exhaust slde Is vertlcal, whereby the
Intake valve suPplled from the valve suPPly means for the Intake
valve may be Inserted by the valve Insertlng unlt Into the valve
gulde on the Intake slde such that the Jlg plate Is swung to Its
one-slde swung posltlon, and the exhaust valve supplled from the
valve supply means for the Intake valve may be Inserted by the
valve Insertlng unlt Into the valve gulde on the exhaust slde
when the Jlg table Is swung to Its other-slde swung posltlon.
In a partlcular aspect thereof there Is provlded a
valve Insertlng apparatus for an Internal combustlon englne of
the type wlth whlch an Intake valve and an exhaust valve are
Inserted Into respectlve valve guldes on the Intake slde and the
exhaust slde whlch are so assembled to a cyllnder head of an
englne that thelr longltudlnal axes cross obllquely, Includlng a
l~V~
palr of valve supply means for the Intake vaive and the exhaust
valve for supplylng each of sald valves wlth Its head portlon
slde, a Jlg means havlng a Jlg plate adapted to set thereon the
cyllnder head wlth Its surface on a combustlon cha~ber slde belng
the Inslde, and a palr of valve Insertlng unlts for the Intake
valve and the exhaust valve, each havlng a holdlng means for
detachably holdlng each valve and a valve push-ln means, and the
Jlg plate whlch Is supported on a Jlg base to be swlngable about
a horlzontal shaft belng swlngable from Its horlzontal posltlon
to Its one-slde swung posltlon on whlch the longltudlnal axls of
the valve gulde on the Intake slde Is vertlcal and to Its other-
slde swung posltlon on whlch the longltudlnal axls of the valve
gulde on the exhaust slde Is vertlcal, whereby when the Jlg plate
Is swung to Its one-slde swung posltlon, the Intake valve
supplled from the valve supply means for the Intake valve may be
Inserted Into the valve gulde on the Intake slde by the valve
Insertlng unlt for the Intake vaIve, and, when the Jlg plate Is
swung to Its other-slde swung posltlon, the exhaust valve sup-
plled from the valve supply means for the exhaust valve may be
Inserted Into the valve gulde on the exhaust slde by the valve
Insertlng unlt for the exhaust valve. Sultably a machlne base
havlng the two valve supply means and the Jlg means d I sposed clr-
cumferentlally at three posltlons thereof Is provlded thereon
wlth a supportlng column whlch Is movable to advance towards and
retreat from the Jlg means, and the two valve Insertlng unlts are
supported respectlvely elevatably on a swlngable frame whlch Is
provlded swlngably on an outer clrcumference of the supportlng
column, whereby by advanclng and retreatlng movements of the sup-
portlng column and a swlng movement of the swlngable frame, the
valve Insertlng unlt for the Intake valve may be moved between
posltlon above the valve supply means for the Intake valve and
posltlon above the Jlg means, and the valve Insertlng~unlt for
the exhaust valve may be moved between posltlon above the valve
supply means for the exhaust valve and posltlon above the Jlg
means.
The present Inventlon wlll now be explalned wlth refer-
ence to the accompanylng drawlngs, In whlch:-
Flg. 1 Is a top plan vlew of the whole sf thls Inven-
tlon apparatus;
Flg. 2 Is a slde vlew of a valve Insertlng unlt moved
to an upper slde of a Jlg means;
Flg. 3 Is an enlarged slde vlew of the valve Insertlng
unit;
Flg. 4 Is a front vlew of the valve Insertlng unlt
vlewed from the rlght In Flg. 3;
Flg. 5 Is a slde vlew of the Jlg means vlewed from a
slde opposlte to that In Flg. 2;
Flg. 6 Is a slde vlew showlng the relatlon between the
Jlg means and a valve supply means;
Flg. 7 Is a front vlew, partly In sectlon, of the valve
supply means;
Flg.s 8-10 are operatlon explanatlon vlews of a valve
holdlng means;
Flg. 11 Is a sectlonal vlew taken along the llne A-A in
Flg. 9;
Flg. 12 Is a top plan view of the valve holdlng means;
and
Flg.s 13-15 are operatlon explanatlon vlews of a valve
push-ln means.
~3~t~1
Referrlng to Flg.,s 1 and 2, numeral 1 denotes a
mac~llne base, numeral 2 denotes a supportlng column which Is ver-
tlcally provlded on the machlne base 1 so as to be movable for-
ward and rearward by a drIvlng source (not Illustrated), and
numeral 3 denotes a swlngable frame whlch Is supported on an
outer clrcumference of an upper portlon of the supportlng column
2 so as to be swlngable by a drlvlng source (not Illustrated),
and a supportlng arm 6 whlch Is movable upwards and downwards
along a gulde bar 5 by a cyllnder 4 Is attached to the swlngable
frame 3, and supportlng arm 6 Is provlded wlth a valve Insertlng
unlt 7 extendlng therefrom downwards.
The valve Insertlng unlt 7 Is so constructed that a
palr of upper and lower parallel supportlng plates 9,10 arranged
to be movable horlzontally along the supportlng arm 6 by a cylIn-
der 8 Is provlded wlth a valve holdlng means 7a and a valve push-
ln means 7b.
As shown clearly In Flg. 3, the valve push-ln means 7b
comprlses a push rod 12 whlch Is so Inserted through
13~
the lower supporting plate 10 as to be movable upwards and
downwards and is provided on its upper end with a weight 11,
a push rod supporting member 14 which is movable upwards and
downwards by a cylinder 13 fixed to the upper supporting plate
9 and serves to support, at its horizontal directional extruded
portion 14a, a lower portion of the weight 11 of the push rod
12, and a push rod pushing member 16 which is movable upwards
and downwards by a cylinder 15 fixed to the upper supporting
plate 9 and uses its horizontally extruded portion 16a to push
upper end portion of the push rod 12.
A push down force of the push rod 12 caused by its own
weight including the weight 11 is set to be smaller than
a force needed for causing the lower end of a valve V to
thrust through a stem seal S attached to a lower end of a
valve guide G, so that the lower end of the valve V may pass
th-ough the stem seal S owing to a forcible pushing down of
the push rod 12 caused by the pushing member 16.
The foregoing holding means 7a comprises a guide member
18 which is movable in the horizontal direction in relation
to the supporting plate 10 by a cylinder 17 and is provided
at its end surface with a guide groove 18a which is slightly
larger than a shaft portion of the valve V, as shown clearly
in Figs. 11 and 12, and a closure member 22 which is fixed
to an end portion of a lever 21 rotatable about a support-
ing shaft 19 by an operation of a cylinder 20 and serves to
open and close the guide groove 18a of the guide member 18.
Valve head supporting members 18b, 18b for supporting the
(9
1-3(~
head portion of the valve V at two points on the circumference
of a taper surface thereof are projected from an upper surface
of the guide member 18, so that the valve V may be able to
swing about the supporting members 18b, 18b to such an
extent of a free gap thereof in relation to the guide groove
18a.
The illustrated example is a valve inserting apparatus
for a multi-cylinder engine, in which -there are provided
plural pairs of the guide members 18 and the closure members
22 constituting the valve holding means 7a, and a plurality
of the pUSA rods 12 cons~ituting the vaive push-in means 7b.
Numeral 23 denotes a jig means disposed in front of the
machine base 1, and the jig means 23 is so constructed that,
as shown clearly in Figs. 2 and 5, a jig plate 26 which can
set thereon a cylinder head W, with its surface on a combus-
tion chamber side being the upside, is pivotally supporsed
on a jig base 25 mounted on a supporting base 24 so as to be
swingable about a horizontal shaft 27 on a lower portion
thereof.
A lever 28 and a nearly V-shaped stopper member 29 are
fixed to an end portion of the horizontal shaft 27, and a
cylindèr 30 which is vertically provided on the supporting
base 24 is connected to one end of the lever 28 so that the
jig plate 26 may be swung by the cylinder 30, and a stopper
pin 31 which is arranged to be abut on the other end of the
lever 28 for positioning the jig plate 26 in its horizontal
position is so provided on the jig base 25 as to be retractable
5~
by a cylinder 31a to its lateral escaped position for allow-
ing a swing movement of the jig plate 26, and additionally
a pair of stopper pins 32, 32' which are arranged to be abut
on one end and the other end of the stopper member 29 for
regulating a swing movement in one direction and that in the
other direction of the jig plate 26 are vertically provided
on the jig base 25. Thus, at the position where the swing
movement in one direction thereof is regulated by the stopper
pin 32 on one side, the longitudinal axis of the valve guide
G on the intake side of the cylinder head W may become vertical,
and at the position where the swing movement in the other direc-
tion thereof is regulated by the stopper 32' on the other side,
the longitudinal axis of the valve guide G' on the exhaust
side may become vertical. NUmeral 26a denotes a position-
ing pin for the cylinder head W provided on the jig plate 26.
A pair of tubular suction means 33, 33' connected to
a negative pressure source (not illustrated) are provided
on the supporting base 24 in such a manner that the same may
be in coincidence with the longitudinal axes of the respect-
ive valve guides G, G' when the jig plate 26 is in its re-
spective swung positions in one direction and in the other
direction, so that, by moving the respective suction means
33, 33' upwards and downwards by respective cylinders 34,
34', the same may be brought into contact with and separated
from the lower ends of the respective valve guides G, G'.
Numerals 35, 35' denote valve supply means for intake
valves and exhaust valves disposed on both sides of the
13~ 51
.
machine base 1, and each of said supply means 35, 35' is so
constructed that, as shown in Figs. 6 and 7, plural holding
tubes 36, each of which detachably holds the valve V with
its head portion being the upside are provided vertically
on a supporting base 37, and oil containing tanks 38 surround-
ing the respective holding tubes 36 are provided on the
supporting base 37, whereby each valve V may be supplied
under the condition that a shaft portion thereof is applied
with oil.
Next, the operation of the foregoing embodying example
will be explained as follows:-
Firstly, by a swing movement of the swingable frame 2,the valve inserting unit 7 is moved from the condition shown
in Fig. 1, to an upper side position of the valve supply
means 35 for the intake valves, and by the cylinder 4, it is
lowered.
Then, by operations of the cylinder 17 and the cylinder
20 of the valve holding means 7a, the guide member 18 and
the closure member 22 which are in advance opened one from
another are closed to each other, whereby the intake valve
V held by each holding tube 36 of the supply means 35 is held
thereon. After the unit 7 is elevated under this condition,
the unit 7 is moved to an upper side position of the jig means
23 by a swing movement of the swingable frame 3 and an advance
movement of the supporting column 2. On this occasion, the
jig plate 26 is in advance swung from its horizontal position
to its swung position on one side where one end of the stopper
member 29 comes in contact with the stopper pin 32 while the
suction means 33 is elevated so that, as shown in Fig. 8,
the same is in contact with the stem seal S at the lower
end of the valve guide G on the intake side, thus enabling
a suction operation of the suction means 33 by the negative
pressure source to be started at the same -time with a down-
ward movement of the unit 7 by the cylinder 4.
Thereby, the intake valve V which is held swingable
by the valve holding means 7a is compensated for in its center-
ing error by the suction operation of the suction means 33,
and, as shown in Fig. 9, the lower end thereof is sucked
into an upper end opening of the valve guide G and the
valve inserting unit 7 is stopped after being lowered to a
predetermined position.: Thereafter, the push rod support-
ing member 14 is lowered by the cylinder 13 to such a posi-
tion that the push rod 12 may abut on the head portion of
the intake valve V, as shown in Fig. 13, and under this
condition, as shown in Fig. 10, the holding of the intake
valve V by the valve holding means 7a is released and the
suction means 33 is lowered.
With the operations above, the intake valve V is, as
shown in Fig. 14, inserted into the valve guide G by the
own weight of the push rod 12, and when the lower end of the
intake valve V reaches the stem seal S, pushing in of the
intake valve V is stopped by the resilient force of the seal
S. Then, the push-rod pushing member 16 is lowered by the
cylinder 15 for pushing down the push rod 12 forcibly, the
1~
lower end of the Intake valve V Is pushed out beloYI the steam
steal S as shown In Flg. 15 and the Insertlng operatlon of the
Intake va I ve V Is completed.
Next, the push rod 12 Is returned to the orlglnal posl-
tlon by elevatlng In order the pushlng member 16 and the support-
lng member 14, and the unlt 7 Is elevated. By a retreat movement
of the supportlng column 2 and a swlng movement of the swlngable
frame 3, the unlt 7 Is moved to an upper slde posltlon of the
valve supply means 35' for the exhaust valve, and at thls posl-
tlon the unlt 7 Is lowered and the exhaust valve Is held by the
holdlng means 7a. Thereafter, the unlt 7 Is returned to the
upper slde posltlon of the Jlg means 23, and durlng thls tIme the
Jlg plate 26 Is swung to such a swung posltlon thereof on the
other slde that the same Is In abutment on the stopper pln 32'
and thereby the longltudlnal axls of the valve gulde G' on the
exhaust slde Is made vertlcal, and Insertlng of the exhaust valve
G' Is carrled out In almost the same manner as mentloned above.
In the foregolng embodIment, the valve Insertlng unlt
Is used for both the Intake and exhaust valves, but such a modl-
fIcatlon can be consldered that the unlt 7 may be used exclu-
slvely for the Intake valve, for Instance, and, as shown by Imag-
lnary llnes In Flg. 1, a valve Insertlng unlt 7' used excluslvely
for the exhaust valve Is provlded on the swlngable frame 3
through a supportlng arm 6', so that, by advanclng and retreatlng
movements of the supportlng
13~
column 2 and a swing movernent of the swingable frame 3, the
respective units 7, 7' may be moved between an upper side
position of the jig means 23 and upper side positions of the
respective valve supply means 35, 35' for effecting insert-
ing operations of the respective valves.
Thus, according to this invention, the intake valve and
the exhaust valve can be inserted into the respective valve
guides at a single assembling station, and thus the apparatus
is made shorter in its line length to improve the space
efficiency of a factory.
