Note : Les descriptions sont présentées dans la langue officielle dans laquelle elles ont été soumises.
Z002Z72
DESCRI~TION
The object of this in~ention is a perfected machine~ which,
with a continuous operating cycle, makes it possible to
package a plurality of rolls of various strap-shaped mate-
tials obtained by means of a plurality of longitudinal cuts
of a wide strip of material fed by a roller.
Machines of the above type are noted, like the problems
they present in operation, as specified below for some of
them.
A first problem of the traditional machines derives from
the fact that they must be stopped each time the rolls of
material reach the required diameter, for discharge.
The machine must also be stopped to change the cutting
means or blades which make the longitudinal cut of the ma-
terial, which reaches the machine in the form of a wide
strip.
The replacement of the blades is a more negative drawback
than the first, as it i9 lengthy.
Another drawback of the machines of known type is that the
supporting means of the rollers, known in the specific tech-
nique as "spindle", must undergo a compound movement, inparticular first a rotation then a traverse, to discharge
the rolls of material and load a new plurality of cores de-
stined to receive further strap-shaped material for the for-
mation of another plurality of rolls.
The above problem, besides the intrinsic increase of operat-
~0~:)2~72
ing times, involves the necessity to prepare complicatedmechanisms that make it possible to carry out the above-
mentioned compound movement.
A perfected machine of the above type has now been lnven-
ted, and forms the object of this invention, which elimi-
nates all problems of the traditional machines.
According to a first basic aspect of the perfected machine
according to this invention, it is provided with means, de-
scribed in detail later, which consent it to make a conti-
nuous processing cycle without stops.Consequently, the operating times of the perfected ma-
chine according to the invention are much shorter than those
of traditional machines, with obvious reduction of costs.
According to a further notable characteristic of the per-
fected machine according to the invention, all its operatingphases are clearly visible to the operator, who can therefore
easily check that it is operating correctly.
Another advantage of the perfected machine according to the
invention is that the movement of the supporting means of
the terminated rolls, subsequently simply called "spindle",
is reduced to a simple rotation, thus eliminating the com-
plex movement of the spindles of traditional machines.
A further new characteristic of the perfected machine accor-
ding to the invention is that discharge of the rolls and
loading of the cores take place with the spindle at a stand-
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still.Another particularly advantageous aspect of the perfected
machine according to the invention is the elimination of
dead times to change the blades, as this machine is pro-
vided with at least two pluralities of cutting blades, thefirst of which is made immediately operative for a time cor-
responding to an efficient cut by the blades, while the se-
cond plurality, inoperative for the abovementioned time,
is automatically carried to working condition without stop-
ping the machine, while the first plurality of blades issimultaneously moved away from the work zone.
A further innovation of the perfected machine according to
the invention is that, to supply the cores, a single loader
is provided, in which the cores are fed vertically, making
this machine further simplified compared to the traditional
type.
The characteristics and advantages of the perfected machine
of this invention will be seen more clearly from the follow-
ing detailed description of an unbinding form of its con-
struction, made referring to the attached drawings, in which:fig. 1 is a schematic view of the entire perfected machine
according to_this invention;
fig. 2 is a schematic front view of the means for the forma-
tion of the rolls and their discharge;
fig. 3 is a schematic front view of one of the above means
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in the operative phase of prearrangement of a new plura-
lity of cores;
fig. 4 is a partial schematic view of the above means in
the operative discharge phase of the terminated rolls;
fig. 4A shows the connection between the discharge shaft
of the terminated rolls and loading of the cores;
figs. 5 to 5H are schematic lateral views showing the
movement of the supporting means of the rolls;
fig. 6 is a front view showing the means to synchronize
the rotation speeds of the abovementioned spindles;
fig. 7 is a schematic lateral view showing the means to
replace worn blades and put the new plurality of blades
in operating condition;
fig. 7A shows the means for rapid replacement of the worn
blades;
fig. 8 is a schematic lateral view showing the discharge
phase of a terminated roll and the start of a new one;
fig. 9 is a schematic lateral view showing the supply of
cores to the spindles;
fig. 10 is a view in cross-section of a detail of the
supporting means of the cores.
Referring first to fig. 1, the perfected machine according
to the invention comprises, as a whole, a feed station 10
in which a roller of notable width is prepared, indicated
with 12, from which, through the perfected machine according
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to the invention, a plurality of rolls as specified below
will be obtained, starting from a series of longitudinal
cuts on the strip of material fed by the abovementioned
roller 12.
Downstream from the feed station 10, the machine comprises
a station 14, provided with a plurality of shafts or
spindles on which the rolls of material will be formed.
On one side of the station 14 a further station 16 is pro-
vided, in which the cores are loaded, then carried, as
described below, to the station 14.
On the side opposite the previous one, the perfected ma-
chine according to the invention comprises a further station
18 in which the terminated rolls are discharged to be sent,
for example, to a stocking station not shown.
Making particular reference to fig. 2, the formation station
of the rolls:~ 14, the loading station of the cores 16 and
the discharge station of the terminated rolls 18 are de-
scribed in detail.
The formation station of the rolls of material 14 will be
first described.
This station comprises supporting means 20, subsequently
called "spindle", which initially support the cores on which
the strips of material obtained with a series of longitudi-
nal cuts on the material coming from the roller 12 will gra-
dually be wound.
27~
In fig. 2 it is assumed that a plurality of terminated rolls22 is already present, only some of them shown, which must
be carried into the discharge station 18. The spindle 20
is supported, for this purpose, at its ends by a pair of
movable supporting elements or revolvers 24, provided with
tailstocks to keep said spindle 20 in position.
The revolvers 24 can be revolved round their longitudinal
axis so that the spindle 20 is carried, through rotation,
donwards in the direction of the arrow F opposite a dis-
charge unit indicated in the complex with 28.The discharge unit 28 permits removal o~ the terminated
rolls of material 22 from the spindle 20 and their tempo-
rary prearrangement on a supporting shaft 30 provided in the
discharge station of the terminated rolls 18.
The discharge unit 28, a lateral view of which is shown
in fig. 5, comprises a supportlng bracket 31, above which
are provided two uprights 32, which support a series of U-
shaped sections 34, inserted in special seats o~ the up-
rights 32. Said sections 34 form, as can be seen in detail
in fig. 2, a substantially comb-shaped structure designed
to receive the terminated rolls 22, each of which are posi-
~ioned between two adjacent sections 34. When the spindle
20 has terminated its downward rotation and all terminated
rolls 22 have been placed between the sections 34, a hollow
shaft 36 is longitudinally operated, in which the corPs 44
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of the core loading unit are positioned; this unit,
through traverse in direction of the discharge unit 2~
carries out removal of the rolls 22 from the spindle 20
and their temporary support on the shaft 30.
The shaft 36 is controlled by a motor 38, which, by means,
for example, of a worm screw 40 controls its advances in
the direction of arrow G of flg. 2. The shaft 36 thus
causes a transversal traverse of the bracket 31 on its
means of support 42 and therefore the transversal traverse
of the uprights 32 and terminated rolls 22.
~s can be seen in detail in fig. 3, the terminated rolls 22
are therefore positioned on the supporting shaft 30, freeing
the spindle 20 on which a new set of cores 44 is positioned,
again to drive the shaft 36. The spindle 20 is now returned
to its starting position by rotation of the revolver 24 in
opposite direction to the previous one. Discharge of the
terminated rolls 22, with particular reference to figs. 3
and 4, takes place in the following way. The supporting
shaft 30 is connected to a control motor 46, which, by means
of a mechanism of worm screw type or similar, can cause it
to move back by a pre-established length (fig. 4) so that
the terminated rolls 22 fall one at a time into a collection
station, not shown, in the direction of arrow H of fig. 4.
The terminated rolls 22 are made fall at a time by returning
to the initial position the comb-shaped structure provided
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with sections 34, which is connected to the shaft 36 by
a mechanism described below with reference to fig. ~A.
The connection between the shaft 36 and the upright 32 is
obtained by means of a pair of small rods 33, which present,
longitudinally, a slit 35 which extends for almost their en-
tire length.
The small rods 33 are engaged at their ends with stop ele-
ments 33, respectively integral to the upright 32 and shaft
36. The stop elements therefore slide into the slits 35
and therefore, when the shaft 36 moves in the direction of
arrow G of fig. 2, the opposite ends of the upright 32 and
shaft 36 can approach each other, coming into contact.
When the shaft 36 moves in opposite direction to the pre-
vious one, the abovementioned opposite ends return to the
position illustrated in fig. 4Aj
Through this connection the shaft 36 can control a traverse
of the uprights 32, thus carrying all terminated rolls 22
to place them on the shaft 30, as shown in fig. 3.
At this point, the shaft 36 is made move back in reverse
direction to that of arrow G, so that the above connection,
obtained by means of the small rods 35, makes it possible
- to return the uprights 32 to the position indicated in fig.2,
thus discharging the terminated rolls 22 at the collection
station, as specified above.
Once a new set of cores 44 has been positioned on the spindle
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20, the latter, through rotation of the revolver 24 in re-
verse direction to the previous one, is restored to its
initial position.
With particular reference to fig. 5, the above operating
phases are shown, in lateral view, for the movement of the
spindle 20 to the discharge station 28 and its positioning
for the formation of a new set of rolls of material 22.
In fig. 5, in which the same elements as the previous draw-
ings have beer. indicated with the same reference numbers,
we further note, associated to the revolver 24 sketched
in this figure, a turret 50 carried by the casing of the
machine revolvingly by a revolving shaft 52, suitably
shaped on one face to receive and discharge the spindles 20.
In the abovementioned figs. 5 to 5H, one end side of the
turret 50 is illustrated, as, on the opposite end of the
shaft 52, a corresponding, identical side will be provided.
The turret 50 is provided, on one side, with two shaped
essentially semicircular hollows 54, each of them suitable
to receive and support one of the ends of a spindle 20.
In particular, the distance between the hollows 54 will be
such that the turret 50 can simultaneously support a
spindle 20 sUpporting the cores 44, together with a spindle
20 supporting a plurality of terminated rolls 22, as re-
sults, in particular, from an examination of figs. 5D and 5E.
In fig. 5 the turret 50 is represented with continuous line
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in the position in which it is about to receive a spindle
20 loaded with cores 44 thanks to the movement of an ope-
rative arm 56 of which more will be said later.
In fig. 5A the turret 50 has made a clockwise rotation of
approximately 90 with respect to the previous position in
clockwise direction marked by arrow 0 of the same figure.
The abovementioned spindle 20 loaded with cores 44 will now
be suitably housed with its ends on the two turrets 50.
As can be seen from the abovementioned fig. 5A, the adja-
cent hollows 54 are empty for the moment, as they do notsupport any spindle.
Always with particular reference to fig. 5A, we note that
the revolver 24 is provided with suitable means of support,
essentially positioned 180 from each other, provided to
support a pair of spindles 20.
Furthermore, the revolver 24 is carried revolvingly by a
shaft 55.
The spindle located on the left of the revolver 24 in fig.
5A is loaded with cores 44, whlle the spindle 20 on the
right of the same figure is also loaded with cores 44, but
on them are forming the rolls 22~ as it iS seen that they
are being reached by the strips of material 72.
The revolver 24 is now given, in any known way, an anti-
clockwise rotation in the direction of arrow P of fig. 5A
with such a speed, referring also to figs. 5B and 5C, SG that
;2C~0~272
the two spindles 20 gradually occupy the position pre-
viously occupied by the other. At this point, the rota-
tion of the revolver 24 is momentarily stopped (fig. 5C) and
on the spindle 20, which is now located on the left, will
5q be placed a plurality of terminated rolls 22, while on the
spindle 20, now on the right, will start the formation of a
new set of rolls 22.
As can be noted again from ~ig. 5C, the strips of material 72
now present a direction that is substantially tangent to the
cores 44 of the spindle 20 on the right.
A cutting station 90, described in detail below, now cuts
the strips 72, having predominantly or simultaneously ap-
plied a terminal strip.
At this point the machine, thanks to means of coordination
not shown, discharges the terminated rolls 22, removing the
relevant spindle 20 from the revolver 24.
This operative phase will now be described with reference
to figs. 5C to 5H.
The turret 50 is first put in rotation so that it rotates
round the shaft 52, which can slide in a suitably shaped
groove 53.
In this way, simultaneously to rotation of the turret 50,
it is raised upwards.
In fig. 5D it is seen that the empty hollows 54 of the tur-
ret 50 grip the spindle 20 on which are present the termi
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20~)X2~2
nated rolls of material 22, while simultaneously on the
other spindle 20, located on the revolver 24, are forming
a new set of rolls 22.
Rotation of the turret 50 continues while the spindle is
maintained at a standstill until (fig. 5E) the spindle 20
loaded with the cores 44 is placed on the revolver 24. The
turret 50, which suitably supports the spindle 20 loaded
with rolls 22 just removed from the revolver 24, continues
rotating until it reaches the position in fig. 5F.
At this point starts, as regards the revolver 24, an ope-
rative phase substantially identical to that described in
figs. 5A to 5C.
In fact, it is re-rotated, always in anticlockwise direction,
marked by arrow P at a speed like that specified above.
The turret, during this operative phase, is not rotated and
the machine, by means of means described below, removes the
spindle 20 loaded with terminated rolls 22 from the turret.
Figs. 5G and 5H illustrate, for the revolver 24, the opera-
tive completion phase of the rolls 22 and the cutting phase
of the strips of material 72.
The machine according to ths invention, to remove the
spindle 20 loaded with rolls 22 from the turret 50, com-
prises an operative arm 56 Which can advance both in hori-
zontal direction backwards and forwards, as indicated by
arrow L in fig. 5, and vertically upwards and downwards, as
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72
as indicated by arrow M of the same figure.
The operative arm 56 is controlled in its horizontal dis-
placements by noted schematized means, e.g. as means with
rack 58. Its vertical displacements will be controlled by
noted means not shown, e.g. means with piston or similar.
It is now assumed to start from the position of the opera-
tive arm 56 shown in fig. 5E" from which it is made advance
up to the`position in fig. 5F. The special conformation
of` the hollows 60 provided at the ends of` the two operative
arms 56 will permit the coupling and withdrawal of the
spindle 20 loaded with rolls 22 by turret 50.
Said operative phase is easily understood from the examina-
tion of figure 5F (coupling of spindle 20) and fig. 5G (de-
posit of the spindle in discharge station 28), as it is seen
that the operative arms 56 have been first made move back,
and, now referring also in particular to fig. 5, they have
undergone a downward traverse up to the position represented
with dotted line from which they are again made move back,
leaving the spindle loaded with rolls 22 in discharge station
28.
The operative phases described above for one of the spindles
20 must be considered identically valid for the other spindle
20, for which the description of the above phases is obvious-
ly omitted.
According to a further particularly advantageous aspect of
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the perfected machine according to the invention, means are
provided to control the rotations of the spindles 20 in
synchroniam ~ith one another.
These means are shown in detail in fig. 6 and described be-
low.
With reference to the abovementioned figure, these means
comprise a first and second control motor 50 and 62, whlch
are connected to the spindles 20 by means of return kine-
matisms which carry the movement of rotation of both the
first control motor 60 and the second control motor 62 to
the axis 64 of one of the spindles 20 whose rotations in-
volve those of the spindles 20, in such a way that, through
said kinematisms, the peripheral speeds are identical.
One of the spindles 20 Will be loaded With rolls of mate-
rial 22 almost terminated, while the other will be loadedwith rolls 22 started.
The motors 60 and 62 can be controlled in noted way by
means of a card programmer which controls the operation of
both motors in order to obtain the abovementioned desired
synchronism so that the peripheral speed of the spindles 20
iS similar.
A detailed description will now be given of the cutting unit
of the perfected machine according to the invention, which,
according to an advantageous aspect, permits automatic re-
placement of a set of worn blades with a set of new blades
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without interrupting operation of the machine.
With reference to fig. 7, the material in strip 66 of
notable width comes from a return roller 68 and advances,
after a further return roller 70, in the direction of ar-
row N to be cut into strips of prefixed width which arewound on cores 22a, which, traditionally, are prefabricated
in cardboard, plastic or similar.
The means which cut the strip 66 into thin strips 62 com-
prise a first plurality of blades 76 carried by suitably
shaped means of support 78, which, at one end, are ~iY~ed
on a supporting shaft 74 carried revolvingly by the casing
of the machine which can rotate in the direction of the
double arrow 0 in fig. 7.
The abovementioned first set of blades 76 is in the opera-
tive position in which the blades cut the wide strip 66 in-
to thin strips 72, and, in particular, it is noted that
cutting takes place on one side of the wide strip 66, which
can be defined as external side with respect to same.
As mentioned above, the perfected machine according to the
invention has made it possible to eliminate dead times for
replacement of the cutting means, as, as noted in particular
in fig. 7, it presents a second plurality of blades 82 car-
ried by means of support 80, which are destined to opera-
tively replace the blades 76 of the first set when the lat-
ter are worn.
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~0~)227;~
The blades 82 of the second set, now in inactive position,
are placed on a second shaft 81 which can be made rotate
in the direction of double arrow R of fig. 7.
The second shaft 81 is staggered with respect to the first
shaft 74 and essentially parallel to it.
Furthermore, the second shaft 81 is placed, with respect to
the thin strips 72, on the side opposite what may be defined
as internal side with respect to same.
Making particular reference to fig. 7A, the means are de-
scribed which consent rapid replacement of the blades whenthey are worn.
The above means are identical for each set of blades and
comprise a small piston 83 whose shank is movable inside
a hollow 89 of the means of support 78~and 80, said shank
being provided with a proJection 85, engaged in a hollow 87
of the means of support 78 and 80.
The width of the hollow 87 is greater than that of the pro-
~ection 85. In this way, when the blades, e.g. blades 82,
are in operative cutting position, the shank 83 is made
re-enter in the small piston so that the projection 85 is
engaged in a face of the hollow 87 locking the supports 80.
When the blades must be changed, as is now the case of the
blades 76, a limited emission of the shank 83 is con-
trolled in noted way so that the abovementioned projection
85 is released from the supporting elements 78, which may
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be easily and quickly removed.
A new set of blades is then applied to support 78.
Referring to figs. 7 and 7A, it is noted that cutting of
the wide strip 66 takes place on its external side (fig.7)
or internal side (7A).
These two forms of construction, which may be used alter-
natively, are chosen according to the material to be cut.
It should also be noted that, in the form of construction
shown in fig. 7, means to release supporting elements 78
and 80 are not provided as these elements are supported in
any noted way by a cross-piece supported at the end by two
supporting arms 80a and 78a.
It will be sufficient to remove the cross-piece supporting
the worn blades and replace said blades with a set of new
ones.
Naturally, also in the case of the form of construction in
fig. 7A, the supporting meanq of the blades will be sup-
ported by a corresponding cross-piece and the procedure
will be similar, operating the small pistons 83 later when
the cross-piece has been removed from the machine.
From the above description it is evident that there is a
considerable advantage in being able to replace a cutting
unit 76 with another 82 without having to stop the machine.
With particular reference to fig. 8, the part of the per-
fected machine according to the invention is described,
2C~ 72
which ejects a terminated roll of material 22 and startsa new roll on a core 44.
The strip of material of notable width 66 also comes in
this case from a return roller 68 and it, being in double
layer, is directed to the abovementioned return roller 70
shown in fig. 7 and to another return 84, so that the
strip 66 is sent to the upper spindle 20 in the direction
of arrow N and to the lower spindle 20 in the direction of
arrow T.
Longitudinal cutting of the wide strip 66 takes place as
described above, and, in fig. 8, is shown and described be-
low, the way with which the formation of a new roll of mate-
rial 22 starts on a core 44.
This part of the machine comprises an operative piston not
illustrated, provided for the movement in the direction of
double arrow S of fig. 8 of an arm 86, hinged in 88, and a
unit for the formation of a new roll of material indicated
in the complex with 90.
The unit 90 comprises a support 92 whose rotation is con-
trolled by the arm 86, as the abovementioned support 92 ishinged in 94 to the casing of the machine.
The support 92 is shown with broken line in the inactive
position and with continuous line in the work position..
Once the arm o6 is driven to make an upward traverse, the
support 92 will correspondingly be brought to the lowered
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Z;~72
position in which it is represented with continuous line.
On the support 92 is placed a further operative arm 96,
hinged in 98 to support 92, which is provided, at one end,
with cutting elements 100 to operate on the cores 44 for
the start of a new roll of material and for the transversal
cutting of the thin strip of material 72 so that it is
fixed on the core 44.
The second operative arm 96 is provided with means 102,
which, pressing the end of the thin strip 72 on the core
44, stretch the latter, causing its peripheral adhesion on
core 44 after application with known means, not shown, of
a strip. When the thin strip 72 has continued its forward
movement, thanks also to the rotation of core 44, its end
is engaged in cutting element 100 of the operative arm 96
which therefore cuts said end so that the thin strip 72 can
be wound on core 44.
Making particular reference to fig. 9, the feed station
of the cores 22a to the machine is described.
According to a characteristic of this invention, the cores
44 are visible outside the machine as in this latter there
are no mechaniQms in movement in front of the feed station
of the cores as in traditional machines.
The feed station of the cores 44 comprises a feed hopper
104 provided in noted way with a device which makes it pos-
sible to arrange the cores 44 in order even if they are
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inserted haphazardly in the hopper 104.
The cores 44 descend, from the hopper 104, into a feed
duct 106 by gravity and are superimposed one on the other
to be able to be sent one at a time to the station in
which the shaft 36 on which they must be loaded is posi-
tioned.
The means which ~eed the cores 44, one at a time, to the
packaging station of each of the spindles 20, comprise
means to temporarily stop one core 44 at a time and permit
its feed to the station in which the shaft 36 is placed.
The above means, which may be connected to a card program-
mer or similar for sequential operation, comprise de-
energizable stops placed on two planes, each corresponding
to one of the spindles 20.
Fig. 9 shows a detailed schematic view of the unit that
permits the feed of one support of the cores, as the other
will be identical.
The unit to feed the cores one at a time comprises first
of all a first de-energizable stop 108 composed of an arm
against which a core 44 stops, withheld, on the opposite
side, by the side wall of the feed duct 106.
The stop 108 is hinged on a small shaft 110, which can be
rotated in clockwise direction according to the direction
of arrow U so that it permits the fall of core 44 on a
further stop 112, also composed of an arm hinged in 114 on
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its own small control shaft, connected, like the small
shaft 110, to means not shown and programmable.
The stop arm 112 is longer than the stop arm 108 as it has
a different, supplernentary function.
The arm 112 can, in fact, permit the feed of core 44 and
a duct 116 carrying the cores 44 to the relevant loading
station, or, alternatively, ~otated in the direction of
arrow ~ in fig. 9, permits the further descent of core 44
into a further feed duct 118 to carry the cores 44 towards
the other loading unit of the cores.
As can be noted in particular in fig. 9, the cores 44 are
perfectly aligned in both the ducts 116 which carry them
to the loading station 36, and in the vertical ducts 118
Ped by hopper 104.
Each of the feed ducts of cores 44 to the loading station
comprises, along its route, a plurality of de-energizable
stops 120, consisting, like stops 108 and 112, of stop arms
each hinged on its small control shafts 122 connected to
the same programmable means which control operation of the
small shafts 110 and 114.
Once the cores 44 are fed to ducts 116, the stop arms 120
withhold the latter in the position shown in fig. 9.
In the form of construction shown, the perfected machine
according to the invention withholds one pair of cores 44
at a time as there are two stop arms 120.
20~22~2
The abovementioned programmable means first free the core
44 placed in the front by means of anticlockwise rotation
of the arm 120 associated to it, and, once this arm is
returned to stop position, an anticlockwise rotation of the
arm 120 will be commanded so that another core 44 goes to
the exit end of feed duct 116.
The operating cycle of the perfected machine according to
the invention can alternatively provide complete feed of
the upper duct 116 with consequent filling of the loading
station of the cores, associated~to upper spindle 20, and,
subsequently, complete feed of the loading station of the
cores associated to lower spindle 20, or feed of one core
44 at a time for the loading station of the upper and lower
cores.
In both the above alternatives, loading of the cores 44 to
the machine will be fast and reliable.
A description will now be given, with particular reference
to fig. 10 but taking into account also fig. 9, of the load-
ing station of the cores 44, which are fed, as described
above, by the feed station of the cores described with refe-
rence to fig. 9.
The discharge and collection station of the cores 44 re-
ceives them by means of any known means, e.g. an inclined
plane 126 shown with broken line in fig. 9. This station,
formed by shaft 36, is now described in detail.
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The shaft 36 is in two parts or jaws which made be made
integral to one another, which, to receive cores 44 are
initially open.
The collection station of cores 44 will therefore sub-
sequently be indicated as shaft or station 36.
The position described above of the shaft 36 is shown in
fig. 9, in which the station 36 presents a first jaw 128
integral to supporting means 130 and a second jaw 132
hinged in 134 to an upright integral to supporting means
130.
Both jaws 123 and 132 present an essentially semicircular
form, so that, when they are coupled to one another and
made integral, they enclose cores 44 in their suitable
seats, as shown in fig. 10.
With reference to the above figure, sensor means 136 are
provided in discharge station 36 to detect the presence of
the single cores 44 in the above station and their correct
positioning in same.
The abovementioned sensor means may consistof an electric
switch comprising a plate 138 which is stressed upwards
by a pin 140 pushed in the direction now considered by the
core 44. The sensor means 136 will be cornected in known
way to luminous, acoustic or similar means to confirm cor-
rect positioning of cores 44.
From the above description, the advantages are evident of
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the use of the perfected machine according to the invention
which, thanks to its special conformation, can offer a
continuous operation with automatic cycle, thus eliminat-
ing the dead times of traditional machines.
Finally, it i~ clear that variants and/or modifications
may be made to the perfected machine according to this in-
vention, without affecting i~s protection.
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