Device for gripping a packaging case in a flattened configuration and opening thereof in a tubular c

专利摘要:
Device for gripping a packaging case in a flattened configuration and opening thereof in a tubular configuration, and machine comprising said device. Device (1) for capturing and opening packaging cases comprising: a rotary drive drum with respect to a fixed frame; at least one toothed wheel (7) linked in an eccentric position to the driving drum and driven in rotation by a toothed ring gear (8) integral with the fixed frame; and at least one capture group (2) rotatably linked to an eccentric point of the gear wheel (7), so that it follows an epicyclic profile in correspondence of whose cusps the capture group (2) approaches, following a course advantageously radially, first to a capture position (3) of a folded packing case, then to the opening piece (4) with which it collaborates to open the packing case in a tubular configuration thereof adapted to successive filling operations. (Machine-translation by Google Translate, not legally binding)
公开号:ES2559304A2
申请号:ES201531180
申请日:2015-08-07
公开日:2016-02-11
发明作者:Lauro GHIZZONI
申请人:MONOLAB Srl；
IPC主号:

专利说明:

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Device for gripping a packaging case in a flattened configuration and opening it in a tubular configuration, and machine comprising said device
Scope
The present invention relates to a device for capturing a tubular manufacturing case in a flattened configuration and the volume conformation thereof. Such a device, known in the sector with the name of cardboard opening unit, is generally integrated in cartoning machines intended for the packaging of products in cardboard boxes, cardboard or an analogous folding material.
The invention therefore finds useful application, in particular, in the field of product packaging, in particular, in drug packaging.
Prior art
Most of the medications are usually packed in ampoules, which are then introduced, accompanied by an illustrative leaflet, in packaging cases, or cardboard boxes that carry the trademark that identifies the product sold. The operations of introduction of the ampoules and closing of the box are carried out in an automated way by the so-called boxing machines or lines.
Such machines comprise, in general, a first station where the packing cases are extracted from a dispenser and successively opened in tubular configuration, or the cartons are opened, according to the terminology of the sector, to be then placed on a conveyor that drag to successive filling stations.
To better appreciate the usefulness of the carton opening unit, it is necessary to observe how the packing cases are stacked, of generally parallelepiped conformation, in a flattened configuration inside the dispenser, line above the station. As it is known even by those who are not technical, the drug packaging case has a tubular structure of rectangular section, delimited by four side panels opposed two to two, whose ends are closed by two panels of
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extreme, equipped with a suitable retention tongue. In the flattened configuration, the four side panels are collapsed, in contact with each other. The main purpose of the cardboard opening unit is precisely to bring the case to its tubular configuration, so that it can be successively filled through the openings of the ends before closing the respective panels.
Among the various types of carton opening units used to date, those that employ suction cups mounted on the periphery of a rotating carousel are particularly noted. The suction cups remove the flattened packing case in a first angular position, then open it in collaboration with a piece provided in a second angular position, and finally release it in correspondence with a third angular position. Such a configuration guarantees good reliability and a high rate of elaboration of the device.
In some cases, the rotary mode of the suction cups can be combined with a radial movement in order to improve efficiency, either in the capture or in the opening of the packaging.
The systems that provide for such a combination of movements, even those essentially corresponding to the demands of the sector, nevertheless have some inconveniences not resolved until today.
In particular, they rely on separate linear activators with respect to the first motor that drives the carousel in rotation, increasing complexity and making precise electronic synchronization of the movements necessary, or defining trajectories and orientations of the screens that quickly separate from the radial direction ideally required for the entire phase of approaching and moving away from the operating stations, damaging the precision of the manipulations carried out on the case.
The technical problem at the base of the present invention is, therefore, that of inventing a device for extracting and opening the cases that overcomes the drawbacks encountered in the known technique, and that allows, in particular, a perfect radial alignment of the capture elements, in correspondence with the operating stations, however using a single engine first.
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Summary of the invention
The referred technical problem is solved by a device for capturing a packing case in a flattened configuration and opening it in a tubular configuration, comprising: at least one mobile capture group with respect to a fixed frame, provided with at least one capture element - for example, a suction cup - capable of temporarily retaining the packaging case, and predisposed to: capture a packaging case, in a flattened configuration, from a capture position; carrying said packing case in correspondence with an opening piece and collaborating with said opening piece to open the packing case in a tubular configuration; finally take said packaging case in tubular configuration to a release position.
The device further comprises: a drag drum, rotatably movable with respect to the fixed frame, according to a first rotation axis; at least one cogwheel, rotatably linked with the drive drum, according to a second axis of eccentric rotation thereto, said cogwheel being engaged in a cogwheel integral with the fixed frame which determines a certain number of complete revolutions of the cogwheel for each revolution of the drag drum, said capture group being linked to the sprocket according to a third axis of rotation eccentric thereto, so that said third axis of rotation follows an epicycloid with the rotation of the drag drum with respect to the fixed frame, said capture group being found respectively in correspondence with the capture position and the opening piece when said third axis of rotation is in correspondence with two of the cusps of said epicycloid.
A technician of the sector will perceive how the epicycloid profile, made with great simplicity of technical means, by using sprockets supported by the rotating drum, determines the desired radial path of the capture group, in correspondence with the operation points of the device .
Also wishing to guarantee a radial orientation of the capture elements in the approach and in the distance of the aforementioned points, the capture group may subsequently be linked to a stabilizing lever mechanism, predisposed to limit the departures with respect to a radial orientation. of the capture group when it moves in correspondence with the capture position and / or with the opening piece.
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The capture group may advantageously comprise four rigid antlers defining an articulated parallelogram, the at least one element being integral with a first one of said rigid antlers, distant from the third axis of rotation, a second one of said rigid antlers being directly linked to the stabilization lever mechanism.
Note that such technical resource admits to linking the movement of the capture head to the gearwheel, however, allowing a radially external placement thereof, avoiding any interference with the leverage mechanism in the course of manipulation of the packaging case.
A third and a fourth of said rigid antlers, respectively embedded with the first and second rigid antlers, are preferably embedded together in correspondence with the third axis of rotation defined above.
The device can also advantageously comprise a tooth profile within which a soldering probes bolt with an arm rotatably attached to the drive drum is attached, according to a fourth axis of eccentric rotation thereto, kinetically joining said stabilizing lever mechanism, said arm to said capture group.
The stabilizing lever mechanism comprises, in particular, a connecting rod with the arm, and embedded, at its free end, with a lever integral with the capture group.
Said tooth profile is preferably a lobed profile provided with central symmetry with respect to the first axis of rotation. The number of the lobes of the tooth profile is preferably equal to the number of cusps of the epicycloid described by the third axis of rotation.
The capture group is preferably in correspondence with the position of release when said third axis of rotation is in correspondence with one of the cusps of said epicycloid.
The aforementioned technical problem is also solved by a cartoning machine comprising at least one device with the characteristics described above, intended to capture a packing case in a flattened configuration and to the
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opening of the same in a tubular configuration.
Additional features and advantages will arise mostly from the detailed description, made hereinafter, of a preferred, but not exclusive, form of realization of the present invention, with reference to the attached figures, given by way of example, but not limiter
Brief description of the drawings
Figure 1 represents a perspective view of a cartoning machine according to the present invention;
Figure 2 represents a perspective view of a device for capturing and opening a packing case according to the present invention;
Figure 3 represents a developed perspective view of the device of Figure 2;
Figure 4 represents a front view of the device of Figure 2, with a section of the cover carter and the underlying drag drum removed, to allow visualization of the internal components;
Figures 5 to 12 represent a schematic front view of the device of Figure 2 during successive working positions, wherein the drive drum that drives the device is respectively rotated at 0 °, 30 °, 60 °, 90 °, 120 ° , 140 °, 170 ° and 200 ° counterclockwise;
Figure 13 represents an elevational view of a driving group that is part of the machine of Figure 1;
Figure 14 represents a perspective view of a detail of the drive group of Figure 13.
Detailed description
With reference to the attached figures, we generally identify with 200 a cartoning machine, in particular predisposed for the packaging of drugs in ampoules within
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a packing box 100 in cardboard or a flexible analog material.
The packing case 100, known per se, is schematically illustrated in the attached figures 5 to 12. It is usually made from an outline on paper material, which provides six panels separated from each other by fold lines. Once the packaging is finished, the six panels define a parallelepiped box: four contiguous side panels form the main wrapper, while two end panels, usually equipped with a joint tongue, allow the box to be opened and closed. In the context of the present invention, however, two configurations previously assumed by the sketch in question are of interest. In a filling configuration, called a tubular configuration below, the box is essentially formed but the end panels are open, or aligned with one of the side panels. A storage configuration, then called a flattened configuration, is analogous to the preceding one, but presents the collapsed side panels against each other, to define a minimum thickness.
The cartoning machine 200 comprises a distribution system of the packing cases 100 in flattened configuration above, which in this case is specified in an inclined plane 30 along which the stacked packing cases 100 are advanced.
The cartoning machine 200 thus comprises the device for capturing and opening the cases 1, or the carton opening device, which captures the packing cases 100 from a capture position 3 to the exit of the inclined plane 30 and it facilitates opening them in tubular configuration, to then deposit them in an underlying position of release 5 on top of a conveyor belt 51 to pallets.
The cartoning machine 200 finally comprises a filling station itself, provided with a drive group 300 predisposed to introduce the product to be packed, in this case, medicines in ampoules, into the packing cases 100 in tubular configuration, during transit over the conveyor belt 51.
The carton opening device 1, illustrated individually in the attached figures 2 to 4, provides three different capture groups 2 identical to each other and angularly equidistant with reference to a first axis of rotation x of the device. During operation of the device, capture groups 2 are rotated, relative to a frame
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fixed 50 of the machine, around the first axis of rotation x, according to the modalities described below.
Such capture groups 2, whose structure is described in detail below, comprise two capture elements 20, which are specified in suction cups of a type known per se. Such capture elements 20 are arranged to come into contact with one of the panels of the packing case 100, in correspondence with the capture position 3 previously mentioned, and retain it until release, in correspondence with the release position 5.
In a first operational phase, illustrated in the attached figures 5 to 6, an unloaded capture group 2 is then approached following an essentially radial path to the capture position 3 of the inclined plane 30. The capture elements 20 adhere to the front panel of the packing case 100 and the aspiration is activated in order to retain the element. The capture group 2 then moves the packing case 100 away from the inclined plane 30 following an essentially radial path once.
In a second operational phase, illustrated in Figure 7, the capture group 2, with the packaging case 100 associated therewith, is moved angularly at about 120 °, until an opening piece 4 of the device 1 is reached.
In this case, the opening piece 4 comprises two suction cups 40, totally analogous to those that make up the capture elements, and also a revision socket 41 provided below them. Both elements are fixed, or integral with the fixed frame 50 of the machine 200.
In a third operational phase illustrated in the attached figures 8 to 11, the opening piece 4 collaborates with the capture group 2 to open the packing case 100.
First, the capture group 2 gradually approaches the packing case 100, in flattened configuration, to the two suction cups 40. Once the case is joined with the suction cups at the ends, the aspiration is activated in order to retain the panel contrasted with respect to the joint of the capture elements 20.
Subsequently, the capture group 2 moves away, following an essentially radial path, from the fixed suction cups 40, in order to separate the two opposing panels,
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by gradually assuming the tubing case 100 its tubular configuration. The fixed suction cups 40 then release the catch and the semi-open packing case 100 rubs against the surface of the revision socket 41, which promotes its complete opening.
In a fourth operational phase, the capture group 2, with the open packaging case 100 associated therewith, is angularly moved at around 120 °, until the release position is reached.
In a fifth operational phase, illustrated in Figure 12, the aspiration of the capture elements is interrupted in order to deposit the open packing case 100 on top of the conveyor belt 51.
In carrying out the operations described above, the trajectory of the capture group 20, in correspondence with the capture position 3, the opening piece 4 and the release position 5, follows an essentially radial path with reference to the first axis of rotation x described above. Furthermore, always in correspondence with such positions, the very orientation of the capture elements 20 remains essentially aligned with the path followed. The kinetic capacity that allows to realize the mentioned trajectories is described in detail below.
The carton opening device 1 comprises a first motor, not illustrated in the attached figures, which, by means of a transmission 60, rotates a drive drum 6 around the first axis of rotation x. The drive drum 6 is rotatably housed in a cylindrical mold 61, which is integral with the fixed frame 50 of the machine.
The drive drum 6 supports three gearwheels 7, angularly equidistant, arranged frontally with respect thereto, or on the side facing the working area of the machine. Each gear wheel 7 is mounted on the drive drum 6, rotatable with respect to a second axis of rotation and, eccentric with respect to the first. The sprockets 7 are all meshed on an internally toothed crown 8, carved on the periphery of the cylindrical mold. The number of teeth of the internally toothed crown 8 is three times that of the teeth of the sprockets 7, so that, for each complete turn of the drive drum 6, the sprockets 7 meet three revolutions on themselves. . A cover case 62, integral with the drive drum 6, partially covers said gear wheels 7, leaving only its face to emerge
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frontal. It also hides the underlying crown, internally toothed, 8.
Each capture group 2 comprises four rigid antlers 21, 22, 23, 24 that define an articulated parallelogram with development parallel to the drag drum 6. The first rigid horn 21 is embedded, at its opposite ends, with the second 22 and the third rigid pole, and the latter are in turn embedded with the fourth rigid pole 24. The contrasted antlers are essentially the same length. To the first rigid pole 21, a support socket 25 is associated with the two capture elements 20, aligned according to a direction normal to the development of the articulated parallelogram.
The hinge that joins the third 23 and the fourth 24 stiff rod is linked on top of a respective sprocket 7, according to a third axis of rotation z, eccentric with respect to the second axis of rotation and the sprocket 7.
Given the structure described above, said hinge then moves, when rotating of the drag drum 6, following an epicycloid with three cusps. The three cusps are naturally made to coincide with the three notable points of the work path, or the capture position 3, the opening piece 4 and the release position 5. Thus, the straight path of the capture group 2 is performed in correspondence. to these positions.
The kinetic capacity further comprises a stabilizing leverage mechanism 10 attached to the second pole 22 of the capture group 2, and which is predisposed to maintain an acceptable alignment of the capture elements 20 with the almost straight path, in correspondence with the cusps of the epicycloid
On the bottom of the cylindrical mold 61 mentioned above, a tooth profile 9 is carved, trilobed, symmetrically central with respect to the first axis of rotation x. As a technician in the sector you will not have difficulty understanding, a profile with a different number of lobes, for example, two, four or five, can be integrated. Within the tooth profile 9 three probing bolts 90 are linked, which define the movement of each of the stabilizing leverage mechanisms 10 of the three capture groups 2. Each probing bolt 90 is effectively linked to the end of an arm 91 integral with a tree 92 that crosses the drag drum 6 according to a normal direction thereto. Thus, the shaft 92 is rotatably linked according to a fourth axis of rotation w, eccentric to the drive drum 6, and the radial distance of the tooth profile with respect to that point defines the orientation of the same shaft 92.
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The stabilizing leverage mechanism 10 kinetically joins the shaft 92 with the second pole 22 of the capture group 2. In particular, the leverage mechanism comprises a connecting rod 11 integral with the arm 91 and oriented at an angle with respect to it. The shaft 92 joins the two elements in solidarity, passing through the drive drum 6 and the cover box 62 above. The free end of the connecting rod 11 is embedded with a lever 12 which defines a continuation of the second pole 22 beyond the insertion point with the fourth pole 24. The lever 12 has an inclination of a few degrees with respect to the second pole 22 .
Given the right angle configuration between the connecting rod 11 and the arm 91, said connecting rod 11 is essentially directed towards the center of the rotating drum 6 when the tooth profile 9 is radially aligned with the fourth axis of rotation w. When the tooth profile 9 moves away from the center of the rotating drum 6, the connecting rod 11 swings in the direction of the respective catch group 2. When the tooth profile 9 approaches the center of the rotating drum 6, the connecting rod 11 tilts in the opposite direction, or it moves away with respect to the capture group 2. By matching the cusp points of the epicycloid described by the third insertion axis z with the transit of the probe bolt 90 along the outer lobes of the Tooth profile 9, the end of the connecting rod 11 thus maintains an almost constant distance from the capture group 2. In fact, when the capture group 2, dragged by the z-hinge, moves away from the center of the rotating drum 6 in the proximity of which the connecting rod foot 11 lies, the connecting rod 11 itself approaches, compensating for the distance, and vice versa, at the points at which the hinge z returns towards the center. Thus, along the entire path, and particularly in correspondence with the cusp points, an almost radial orientation of the capture elements 20 is obtained.
The drive group 300 of the boxing machine 200, individually illustrated in Figure 13, comprises a plurality of carts 301 - only two of which are illustrated in the figure - in solidarity mounted on a pair of belts 302 that allow their transfer in one direction longitudinal parallel to the sliding of the conveyor belt 51 to pallets.
Each carriage 301, individually illustrated in Figure 14, has a lower arm 303 and an upper arm 304, transversely movable with respect to the main body of the same carriage. The lower arm 303 has at its end an impeller 305 intended to introduce medicinal ampoules, or other things, into a packaging case 100, in
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tubular configuration, carried by border conveyor belt 51 to pallets; the upper arm 304, on the other hand, has a horizontal sheet 306 intended to define an upper revision for the ampoules, also temporarily inserting it into the packing case 100.
The cart 301 also has two sledges 307, also they can slide transversely along the same cart. Mobilization sledges 307 have a wheel of gtia 309 below, linked within a respective horizontal rail 308 integral with the frame 50 of the machine. Both rails 308 comprise a curved path, which defines an approach of the respective wheel of gtia 309 to the front conveyor belt 51 to pallets, in correspondence with a central part of the drive group 300.
Mobilization sledges 307 mount a loose pin 310, which meshes, on the one hand, on a fixed rack 311 integral with the carriage 301 and, on the other hand, on a mobile rack 312, respectively integral with one between the lower arm 303 and the superior 304.
The forward movement of one of the sledges 307, from the profile of the respective lane 308, thus determines a rotation of the loose pin 310 against the fixed rack 311 and a double entity transfer of the respective arm, by means of the associated mobile rack 312 the same.
The technical resource identified in the foregoing allows the necessary transfers of the operating arms to be obtained advantageously, remedying the transverse impediment of the rails with respect to the structures of the prior art, which associate the arms directly to the mobilization sleds.
Obviously, to the invention described above, a technician of the sector, in order to meet contingent and specific requirements, may make numerous modifications and variants, all of which are, however, within the scope of protection of the invention, as defined by the following claims.

权利要求:
Claims (10)
[1]
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1. Device (1) for capturing a packing case (100), in a flattened configuration, and opening it in a tubular configuration, comprising: at least one mobile capture group (2) with respect to a fixed frame (50), provided with at least one capture element (20), capable of temporarily retaining the packing case (100), and predisposed to: capture a packing case (100), in a flattened configuration, from a capture position (3); carrying said packing case (100) in correspondence with an opening piece (4) and collaborating with said opening piece (4) to open the packing case (100) in a tubular configuration; bringing said packing case (100) in tubular configuration to a release position (5); characterized in that it further comprises: a drive drum (6), rotatably movable with respect to the fixed frame (50), according to a first rotation axis (x); at least one gearwheel (7), rotatably linked to the drive drum (6), according to a second axis of rotation (and) eccentric thereto, said gearwheel (7) being engaged to a gearwheel (8) integral with the fixed frame (50) which determines a number of complete revolutions of the gearwheel (7) for each revolution of the drive drum (6), said capture group (2) being linked to the gearwheel (7) according to a third axis of rotation (z) eccentric thereto, so that said third axis of rotation (6) follows an epicycloid when rotating the drive drum (6) with respect to the fixed frame (50), said capture group (2) being found respectively in correspondence with the capture position (3) and with the opening piece (4) when said third axis of rotation (z) is in correspondence with two of the cusps of said epicycloid.
[2]
2. Device (1) according to claim 1, wherein said capture group (2) is subsequently linked with a stabilizing leverage mechanism (10), arranged to limit the departures with respect to a radial orientation of the capture group ( 2) when it moves in correspondence with the capture position (3) and / or with the opening piece (4).
[3]
3. Device (1) according to claim 2, wherein said capture group (2) comprises four rigid antlers (21, 22, 23, 24) defining an articulated parallelogram, the at least one being capture element (20 ) integral with a first (21) of said rigid antlers, away from the third axis of rotation (z), a second (22) of said rigid antlers being directly linked to the stabilizing lever mechanism (10).
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[4]
Device (1) according to claim 3, wherein a third (23) and a fourth (24) of said stiff antlers, respectively embedded with the first (21) and the second (22) stiff horn, are embedded between if in correspondence with the third axis of rotation (z).
[5]
5. Device (1) according to one of claims 2 to 4, further comprising a tooth profile (9) within which a probing bolt (90) connected with an arm (91) rotatably linked to the drive drum ( 6), according to a fourth axis of rotation (w) eccentric thereto, kinetically joining, said stabilizing lever mechanism (10), said arm (91) to said capture group (2).
[6]
6. Device (1) according to claim 5, wherein said stabilizing lever mechanism comprises a connecting rod (11) integral with the arm (91) and embedded at its free end with a lever (12) integral with the capture group (2).
[7]
7. Device (1) according to one of claims 5 or 6, wherein said tooth profile (9) is a lobed profile provided with central symmetry with respect to the first axis of rotation (x).
[8]
8. Device (1) according to claim 7, wherein the number of the lobes of the tooth profile (9) is equal to the number of cusps of the epicycloid described by the third axis of rotation (z).
[9]
Device (1) according to one of the preceding claims, wherein said capture group (2) is in correspondence with the position of release (5) when said third axis of rotation (z) is in correspondence with one of the cusp of said epicycloid.
[10]
10. Casting machine (200) comprising at least one device (1) according to one of the preceding claims, intended for capturing a packing case (100) in a flattened configuration and opening it in a tubular configuration.

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ES2559304R1|2016-06-23|

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WO2018184983A1|2017-04-03|2018-10-11|Gima S.P.A.|Pick and place station|DE3606093A1|1986-02-26|1987-08-27|Bosch Gmbh Robert|DEVICE FOR SEPARATING AND RAISING FOLDING BOXES|

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优先权:

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申请号 | 申请日 | 专利标题

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ITBO2014A000460|2014-08-11|

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ITBO20140460|2014-08-11|

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