ITBO20020037U1 - MACHINE FOR THE PACKAGING OF METAL COVERS - Google Patents

Description

B02002U 0 00 03 7

DESCRIPTION

of the utility model patent

of CORIMA INTERNATIONAL MACHINERY S.R.L.,

of Italian nationality,

based in 44040 FERRARA

VIA ZUCCHINI, 43/45 - MIZZANA FRACTION

Inventor: BALDASSARI Gianfranco

*** **** ***

The present innovation relates to a machine

for the packaging of metal lids, in

detail of metal lids for closing

tins and / or cans normally used, eg

for example, in the food industry.

Generally, the above mentioned lids come

made from flat metal sheets through

combined blanking / drawing operations, al

<ILL> R <E> RO BE <EL> A <F> A <F> R

end of which each lid has a shape <353> N <lb> A <ii I> oonec <r> zs. substantially circular, and comprises a portion

central and an external annular border, which comes,

normally, folded substantially in a U shape for

allow you to hook the lid onto the lid

jar and / or can.

Once made, the lids come

packaged in a packaging machine of the type comprising a feeding device for at least an ordered succession of groups of lids; a wrapping device for packaging the aforementioned groups of lids; and a transfer device for transferring each group of lids from the feeding device to the wrapping device.

The methods followed by known packaging machines of the type described above for packaging the groups of lids are generally of two types.

According to a first methodology, the groups of lids co CC <10> a = z 'are packaged inside relative sheets of OCQ <z> O wrapped in heat-shrinkable material; according to the other LU - J LU

Of the two known methods of the aforementioned type, the c or groups of lids are packaged inside relative bags of paper material.

From the above it follows that the manufacturers of lids who, due to market needs, must differentiate their products and therefore pack the lids produced both in sheets of heat-shrinkable material and in paper bags are forced to purchase machines packaging machines of both types mentioned above.

The purpose of the present innovation is to achieve

a machine for packaging lids

metal that is free from the above drawbacks

exposed.

According to the present innovation it is realized

a machine for packaging lids

metal, the machine including a device

feeder for at least an ordered succession of

groups of lids; and being characterized by the fact

to further comprise a first wrapping device

for the packaging of groups of lids in

respective material wrapping sheets

heat shrink; a second wrapping device for

the packaging of groups of lids in respective

paper bags; and a device

transfer to selectively transfer each said

group of covers from said feeder device ad

one of said first and second wrapping devices. RAFFAE <L> AND BORRE <LLI>

<Iiilb> A N <5> sc <33r> zoneo. The present innovation will now be described with

reference to the accompanying drawings, which illustrate one

non-limiting example of implementation, in which:

Figure 1 is a schematic side view, with

parts removed for clarity, of a preferred form of

implementation of the machine for packaging

metal lids of the present innovation;

Figure 2 is a schematic side view, with parts removed for clarity, of a first detail of the machine of Figure 1;

Figure 3 illustrates a second detail of the machine of Figure 1 in two different operating positions;

Figure 4 is a schematic side view, with parts removed for clarity, of a third detail of the machine of Figure 1; And

Figure 5 illustrates a detail of Figure 4 in two different operating positions.

n With reference to Figure 1, 1 indicates,

OCQ

as a whole, a machine for packaging LU —JUJ aJ <oc of metal lids 2, each of which has a

substantially circular shape, and is provided, at one of its outer annular edges, with a fold (not shown) substantially U-shaped to allow the lid 2 to be hooked to a relative can and / or can (not shown).

The machine 1 comprises a feeder device 3 adapted to receive a succession of lids 2 at the inlet, to form at least a succession of groups 4 of lids 2 (in this case two succession of groups 4), and to feed the groups 4 just formed to a output station (not shown) of the device 3 itself; a first wrapping device 5 for wrapping groups 4 in relative wrapping sheets 6 (Figure 2) of heat-shrinkable material; a second wrapping device 7 for packaging groups 4 in relative bags 8 (Figure 4) of paper material; and a transfer device 9 adapted to selectively transfer each group 4 from the device 3 to one of the devices 5 and 7.

The device 3 comprises, in this case, two feed channels 10, which have a substantially semi-cylindrical shape, are mounted on a

or fixed frame 11 of the machine 1, extend in a direction 12 perpendicular to the plane of the sheet of the machine

c <c figure 1, and are adapted to receive the lids 2 in succession, which are arranged on the relative "cutting" channels 10, i.e. transversely to the direction

12 itself, to form groups 4 consisting of a determined number of lids 2.

The newly formed groups 4 are advanced in the direction 12 and to the output stations (not shown) of the relative channels 10 by means of two feed units 13, each of which is associated with one of the channels 10, and comprises a slide 14 coupled in a known way to the frame 11 to perform rectilinear displacements, with respect to the frame 11 itself, in the direction 12, and a thrust member 15, which is hinged to the relative slide 14 to oscillate, with respect to the relative slide

14 itself and under the thrust of an actuator cylinder 16, around a fulcrum axis 17 substantially parallel to the direction 12 between a raised position (illustrated in broken line in Figure 1), in which the member 15 is arranged outside the relative channel 10, and a lowered position (shown in a continuous line in figure 1), in which the member 15 is arranged inside the relative channel 10 to engage the group 4 just formed.

The transfer device 9 comprises a slide

LU <18 coupled in a known way to frame 11 to perform ÙJ "

The rectilinear displacements, with respect to the frame 11 itself, in a horizontal direction 19 and transverse to the direction 12; a slide 20 coupled in a known manner to the slide 18 to perform rectilinear displacements, with respect to the slide 18 itself, in a vertical direction 21 and orthogonal to the directions 12 and 19; two support bars 22, which project downwards from the slide 20, extend in the direction 12, and are arranged at a distance from each other that is less than the diameter of the covers 2; and a withdrawal and transfer organ 23.

The member 23 comprises a magnet 24, which extends in the direction 12 and between the two bars 22, and is coupled in a known way to the slide 20 to perform, with respect to the slide 20 and the bars 22, rectilinear displacements in the direction 21 between a lowered position, in which the magnet 24 engages a group 4 at one of the aforementioned output stations (not shown) of the channels 10, and a raised position, in which the magnet 24 disengages the group 4 itself. The member 23 is also provided with two flat jaws (not shown) transversal to the direction 12 and coupled in a known way to the slide 20 to move with respect to each other in the direction 12 itself from and towards a clamping position of the group 4 .

The wrapping device 5 comprises a

υ chain conveyor 25 comprising, in turn, two chains 26 (only one of which is shown schematically in Figure 1), which are arranged on mutually parallel planes, and are each mounted in a ring around a respective plurality of wheels

27 toothed, one of which is motorized, rotatably mounted on the frame 11 to rotate intermittently around respective axes 28 parallel to the direction 12. A plurality of substantially cylindrical support elements 29 are attached to the chains 26, which extend in the direction 12 and between the chains 26, and are distributed along the chains 26 themselves so as to define a succession of pockets 30, which are moved by the chains 26 along a determined path P and through an inlet station 31, in correspondence with which the pockets 30 are adapted to receive relative groups 4 from the transfer device 9.

According to what is illustrated in Figure 3, upon entering the relative pocket 30, each group 4 pushes a tape 32 of heat-shrinkable material into the relative pocket 30 itself.

κ which is made by joining two tapes

oOQ <z> jj 33 unwound from respective coils 34, and is folded and UJ <g S stabilized around group 4 by two welders <U_.2N <3⁄4 OC ~ 35 of known type. The welders 35 are shaped to form on the belt 32, at each operating cycle, two distinct welding zones 36, which are separated from each other by means of a cutting member 37 of a known type carried by one of the welders 35 so as to making a tubular casing 38 having two tubular end portions 39, each of which protrudes axially from the unit 4 (Figure 2).

At this point, the casing 38 is advanced from the conveyor 25 through a heat-shrinking station 40, in correspondence with which the casing 38 and the portions 39 are stabilized around the group 4 by means of a heat-shrinking unit 41 of a known type to define the wrapping sheet 6, and, therefore, through an exit station 42 defined by an unloading chute 43.

With reference to Figure 4, the wrapping device 7 comprises a hopper 44 suitable for receiving a stack 45 of bags 8, each of which is housed inside the hopper 44 itself in an initial flattened configuration, in which the bag

8 is arranged according to two layers 8a, 8b between them

co LU

cc U) superimposed, of which the layer 8a is arranged above

o00 <z> or of, and projects axially with respect to the layer 8b; and I a conveying and expansion unit 46, which is 3⁄4

<s LL .2 N Li. 3⁄4 adapted to extract the bags 8 in succession from the hopper 44, and to advance the bags 8 themselves to an expansion and filling station 47, at which the unit 46 expands each bag 8.

The unit 46 comprises a slide 48, which is coupled in a known way to the frame 11 to perform, with respect to the frame 11 itself, rectilinear displacements in the direction 21 between a raised position (figure

4) and a lowered position (schematically illustrated in dotted line in the figure

4); and a pick-up arm 49 provided with a plurality of suction cups 50 connected to a known type suction device not shown and suitable for engaging the bags 8 in correspondence with the relative layers 8b. The arm 49 is hinged to the slide 48 to oscillate, when the slide 48 is arranged in its raised position and under the thrust of an actuator cylinder 51 mounted on the slide 48 itself, around a fulcrum axis 52 substantially parallel to the direction 19 between a raised position (not shown) for extracting a bag 8 from the hopper 44 and a lowered position (figure 4), in which the arm 49 is arranged inside the station 47.

During the movement of the arm 49 from its raised position to its lowered position, the layer 8a engages a shaped tubular tile 53, which forms part of the unit 46, cooperates with the suction cups 50 to remove the layers 8a and 8b one from the other and arranging the bag 8 in an expanded final configuration, and further defines an end portion of a feed channel 54, which has a substantially semi-cylindrical shape, is mounted on the frame 11, extends in the direction 12, and is adapted to receive the groups 4 from the transfer device 9. The tile 53 is also slidingly coupled to the channel 54 to perform rectilinear displacements, with respect to the channel 54 itself, in the direction 12 between a retracted position (Figure 4) and an extracted position (not shown).

When the arm 49 is arranged in its lowered position, the tile 53 is moved to its extracted position to extend the channel 54 inside the bag 8 and allow the insertion of a group 4, which is advanced in the direction 12 and to the inside the bag 8 itself by means of a feed unit 55.

With reference to Figure 1, the unit 55 comprises a slide 56 coupled in a known manner to the frame 11 to perform displacements with respect to the frame 11 itself

<straights in direction 12, and an organ 57 of cc -8

thrust, which is hinged to the slide 56 to oscillate, with respect to the slide 56 itself and under the thrust of an actuator cylinder 58, around a fulcrum axis 59 substantially parallel to the direction 12 between a raised position (not shown), in which the member 57 is arranged outside the channel 54, and a lowered position, in which the member 57 is arranged inside the channel 54 to engage the group 4.

Once the group 4 has been inserted inside the bag 8, the bag 8 has a tubular end portion 60, which protrudes

axially by the group 4 itself, and is crushed

by means of a bender 61 of a known type mounted on the

slide 48 to perform, with respect to the slide 48 itself,

rectilinear displacements in direction 21 between a

raised rest position (figure 4) and one

lowered operating position (not shown). The

the plate 53 and the folder 61 are moved, therefore,

in their backward positions and, respectively, of

rest causing the upward folding of the

portion 60; and the slide 48 is lowered into

direction 21 such that portion 60 itself

υ engages a flexible sheet 62 fixed to the frame 11 0c (Figure 5a).

Finally, as illustrated in Figure 5b,

the suction cups 50 are deactivated, group 4 comes

advanced through a feed device 63 in the

direction 12, above lamina 62, and to a

output station (not shown) of device 7 di

wrapping, and the portion 60 is folded into contact with the

group 4 itself by means of a folding wheel 64

mounted swivel on the frame 11.

The operation of the machine 1 is easy

inferable from the above and does not require

further explanations.

Claims (1)

R IV E N D I CA C T IO N I 1.- Machine for packaging metal lids (2), the machine comprising a feeding device (3) for at least an ordered succession of groups (4) of lids (2); and being characterized in that it further comprises a first wrapping device (5) for packaging groups (4) of lids (2) in respective wrapping sheets (6) of heat-shrinkable material; a second wrapping device (7) for packaging groups (4) of lids (2) in respective bags (8) of paper material; and a transfer device (9) for selectively transferring each said group (4) of or lids (2) from said feeding device (3) to one of said first and second wrapping devices (5, 7). 2.- Machine according to Claim 1, wherein said second wrapping device (7) comprises an operating unit (46) for expanding each bag (8) starting from a relative initial crushed configuration, in which said bag (8) is arranged in two layers (8a, 8b) superimposed on each other; the said operating unit (46) comprising first and second gripping means (50, 53) adapted to engage said layers (8a, 8b) and movable with respect to each other so as to move away the layers (8a, 8b) themselves one on the other hand to arrange the bag (8) in an expanded final configuration. 3.- Machine according to Claim 2, wherein said second wrapping device (7) further comprises thrust means (55) suitable for inserting said group (4) of lids (2) inside a relative said bag (8) arranged in said final expanded configuration. 4.- Machine according to Claim 3, in which said bag (8) has, following insertion into the bag (8) of the relative said group (4) of lids (2), a tubular portion (60) of end projecting axially from the group (4) of covers (2) itself; folding means (61, 64) being provided for folding said tubular portion (60) into contact with said group (4) of covers (2). <I> OR <ELL> R <E> B <ELF> AA <F> R 5.- Machine according to any of the above <lb> N <353> A <Iii> onoescrz. claims, wherein said first wrapping device (5) comprises wrapping and sealing means (34, 35, 37) suitable for wrapping a said group (4) of lids (2) in a relative said wrapping sheet (6) to form a tubular envelope (38) having two further tubular end portions (39) projecting axially from the group (4) of covers (2). 6.- Machine according to Claim 5, wherein said first wrapping device (5) further comprises a heat-shrinking unit (41) adapted to stabilize said tubular casing (38) and said further tubular portions (39) around the relative said group (4) of covers (2). p.i .: CORIMA INTERNATIONAL MACHINERY S.R.L.,