EP2995560B1 - Verschlusseinheit für einen vertikalflussverpackungsmaschine für kurze nudeln - Google Patents

Verschlusseinheit für einen vertikalflussverpackungsmaschine für kurze nudeln Download PDF

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Publication number
EP2995560B1
EP2995560B1 EP15184284.6A EP15184284A EP2995560B1 EP 2995560 B1 EP2995560 B1 EP 2995560B1 EP 15184284 A EP15184284 A EP 15184284A EP 2995560 B1 EP2995560 B1 EP 2995560B1
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EP
European Patent Office
Prior art keywords
shutter unit
blades
unit
packaging machine
pasta
Prior art date
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Application number
EP15184284.6A
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English (en)
French (fr)
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EP2995560A1 (de
Inventor
Giuseppe VEZZANI
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Altopack SpA
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Altopack SpA
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B37/00—Supplying or feeding fluent-solid, plastic, or liquid material, or loose masses of small articles, to be packaged
    • B65B37/16—Separating measured quantities from supply
    • B65B37/18—Separating measured quantities from supply by weighing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B39/00—Nozzles, funnels or guides for introducing articles or materials into containers or wrappers
    • B65B39/001—Nozzles, funnels or guides for introducing articles or materials into containers or wrappers with flow cut-off means, e.g. valves
    • B65B39/003—Rotating means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B59/00—Arrangements to enable machines to handle articles of different sizes, to produce packages of different sizes, to vary the contents of packages, to handle different types of packaging material, or to give access for cleaning or maintenance purposes
    • B65B59/04—Machines constructed with readily-detachable units or assemblies, e.g. to facilitate maintenance

Definitions

  • the present invention relates to a shutter unit for a vertical flow packaging machine for short pasta.
  • the bag consists of a flexible plastic material film, the edges of which are progressively folded, arranged side-by-side and then welded to each other by means of a longitudinal welding unit to form a tubular package.
  • the operation of closing such a package is completed by a transversal welding unit which performs the transversal welding of the tubular package before and after the operation of introducing the pasta into the bag being formed.
  • a sequence of bags filled with a previously calculated amount of pasta is thus obtained.
  • such packaging machines are provided with a weighing unit adapted to measure the weight of the pasta and configured so that, when the chosen weight is reached, the desired amount of pasta is discharged through a hopper, which puts the weighing unit into communication with a forming tube on which the film is wound during the step of forming the bag.
  • the packaging machine has a shutter unit vertically interposed between the weighing unit and the longitudinal and transversal welding unit for temporarily holding the previously weighed pasta before discharging it into the forming tube underneath.
  • “Scissor-like” type shutters which comprise two blades configured so as to hold a dose of short pasta from the weighing unit when the blades are arranged side-by-side (closed shutter) and to discharge it into the forming tube when the blades are reciprocally apart (open shutter).
  • the "scissor-like" shutter units have the disadvantage of determining an extension of the flow of pasta falling into the bag being formed, so the upper level of the pasta inside the bag will never be uniform but will show a given central prominence.
  • EP 2 484 595 A1 discloses a shutter unit for a vertical flow machine for food products, which comprises a diaphragm with movable blades which alternately close for creating a support the dose of product coming from a weighting unit and open for leaving the dose of food product to fall into a bag through a central hole of the diaphragm.
  • a shutter unit 1 for a vertical flow packaging machine for short pasta according to the present invention is shown as a whole in figure 1 .
  • a packaging machine including a shutter unit 1, shown and indicated as a whole by reference numeral 100 in figure 2 , comprises a feeding unit 39 by means of which the pasta is fed to a weighing unit 2, which weighs a dose of short pasta to be then introduced into a package being formed consisting of a plastic material film, the side edges of which are progressively folded, arranged side-by-side and then welded together by a longitudinal welding unit 60 to form a tubular package.
  • transversal welding unit 3 which performs the reciprocal transversal welding of the tubular package before and after the operation of introducing the dose of pasta into the bag being formed. Thereby, a sequence of bags filled with respective doses of pasta is formed.
  • the shutter unit 1 is configured to receive a dose of short pasta from a weighing unit 2 for short pasta fed by the feeding unit 39, hold it and then discharge it into a forming tube 20, on which a plastic material film 92 is wound by means of appropriate shaped guides, the plastic material film being intended to form the tubular package 93 from which the bag receiving the pasta originates by virtue of the welding units 60 and 3, as shown in figure 3 .
  • the shutter unit 1 is vertically interposed between the weighing unit 2 and the welding units 3, 60.
  • the shutter unit 1 is arranged under a hopper 23, which allows the weighed pasta from the weighing unit 2 to be discharged, and the forming tube 20, which is adapted to shape the tubular package 92 while leading the pasta into the bag being formed ( Fig. 3 ).
  • Hopper 23 ( Figs. 3 and 4 ) is removably fixed by means of screw means 38 to the shutter unit 1 and consists of a flat base 35 from which a tube 36 with truncated-cone-shaped end centrally departs.
  • the flat base 35 is inserted between appropriate side guides 40 in the shutter unit 1 and then fixed by means of said screw means 38.
  • hopper 23 can be removed and replaced with a different type of hopper to be fixed to the shutter unit 1.
  • the shutter unit 1 has a base plane 18 supported by a frame 24 fixable to the frame 25 of the packaging machine 100 ( Fig. 4 ), so that the shutter unit 1 is vertically positioned between the weighing unit 2 and the welding units 3, 60.
  • frame 24 comprises a U-shaped portion 26 supported by a pair of arms 27 which are provided with fixing means to frame 25.
  • the shutter unit 1 is fixed to the U-shaped portion 26 by means of a pair of bent laminas 94 connected between the U-shaped portion 26 and the shutter unit 1.
  • All operations of the weighing unit 2, shutter unit 1 and longitudinal and transversal welding units 60, 3 in the packaging machine 100 are managed by a control unit (not shown in the figures), which is configured to coordinate the respective operating steps to one another.
  • the shutter unit 1 comprises a diaphragm 7 formed by at least a first, a second and a third blade 4a, 4b, 4c, which are appropriately shaped and radially arranged.
  • the blades 4a, 4b, 4c are pivoted on a first, a second and a third pin 5a, 5b, 5c, respectively, fixed on a base plane 18 and reciprocally equidistant (by angles of about 120°) along a circumference C.
  • the base plane 18 is further provided with at least one concentric central hole 19 ( Fig. 9 ) of smaller diameter than said circumference C.
  • Said central hole 19 includes a coaxial cylinder or cone 9, which is adapted to be coupled to the forming tube 20 for leading pasta into the respective bag being formed at the welding units 3, 60.
  • the blades 4a, 4b, 4c are actuated by moving means 10 configured to rotate the blades 4a, 4b, 4c simultaneously between a closed position of diaphragm 7, in which the blades 4a, 4b, 4c are mutually arranged side-by-side ( Figs. 1 , 4 and 5 ), and an opening position of diaphragm 7, in which the blades 4a, 4b, 4c are departed from one another, thus creating an opening coinciding with the central hole 19 ( Figs. 8 , 9 , 10 ).
  • the weighed dose of pasta is held by the shutter unit 1 in the closed position of diaphragm 7; differently, in the opening position of diaphragm 7, such a dose is released by means of cone 9 and forming tube 20 into the bag being formed.
  • the blades 4a, 4b, 4c may be substantially petal-shaped or in all cases have any shape suited to making the diaphragm 7; furthermore, a higher number of blades may be used.
  • the blades 4a, 4b, 4c are all included on a plane which is parallel to the base plane 18 and are arranged at a given height from the latter.
  • a second plane 21 is arranged parallel to the support plane 18 and at a lower height than the plane of the blades 4a, 4b, 4c ( Figs. 1 , 8 , 9 , 13 ).
  • the second plane 21 grazes the blades 4a, 4b, 4c so that dust or residues of pasta cannot be deposited between the second plane 21 and the blades 4a, 4b, 4c thus obstructing the movement thereof.
  • the second plane 21 comprises a further central hole 22 overlapping the central hole 19 of the base plane 18 and having equal dimensions.
  • the moving means 10 are actuated by a device 96 comprising a brushless motor 11 driven by the control unit of the packaging machine 100.
  • the brushless motor 11 ( Figs. 12, 13 ) actuates a crank 6 connected to a connecting rod 12, in turn hinged by means of a metallic pin 34 to a T-handle 13 ( Figs. 1 , 5 , 7-9 , 11-13 ), which is integral with the first blade 4a and pivoted in said first pin 5a.
  • T-handle 13 is then connected by means of a first and a second tie rod 14 to respective cranks 15 pivoted in said second and third pins 5b, 5c and integral with said second and third blades 4b, 4c of diaphragm 7 ( Figs. 5 , 7 , 10 , 12 ).
  • first blade 4a is fixed to T-handle 13 by means of screws 28 passing through a cylindrical spacer element 29 interposed between the T-handle and the blade 4a; similarly, the second and third blades 4a, 4b, 4c are fixed to the respective cranks 15 by means of screws 28 passing through a similar cylindrical spacer element 29 interposed between each crank 15 and the blade 4b, 4c ( Figs. 5 , 7 , 9 , 11 ).
  • the first and second tie rods 14 have a first end hinged to the respective crank 15 by means of a further pin 16 passing through a further cylindrical spacer element interposed between each tie rod 14 and the crank 15; a second end of the first and second tie rods 14 is instead fixed to said T-handle 13 by means of threaded pins 17 inserted into slots 97 and locked therein by means of nuts 98.
  • the brushless motor 11 is mounted on a support structure 30 fixed over said base plane 18 of the shutter unit 1.
  • the support structure 30 has an upper wall 31 supported by a pair of feet 42 fixed to the base plane 18 and at a higher height than that of the plane of the blades 4a, 4b, 4c.
  • a housing for fixing said brushless motor 11 is obtained on the upper axis 31 so that said connecting rod 12 is free to translate underneath said upper wall 31.
  • said upper wall 31 comprises a guide slot 32 in which a zero sensor 33 is housed in a translatable manner ( Fig. 1 ), connected to the control unit of the packaging machine 100 and configured to detect the time when diaphragm 7 is in the opening position (or in the closed position) to determine a complete operating cycle of diaphragm 7 and coordinate the shutter unit 1 with the weighing unit 2 and the welding units 3, 60.
  • the zero sensor 33 is an inductive sensor configured to detect the passage of the connection pin 34 between T-handle 13 and connecting rod 12 moved by the crank 6 and rotated by the brushless motor 11 (Figs. 14, 15). By detecting the metallic pin 34, the control unit is able to identify whether diaphragm 7 is in the opening position (or in closed position), so as to recognize the initial or final step of a complete operating cycle of diaphragm 7.
  • the zero sensor 33 is adjusted by translating it along the guide slot 32 thus allowing the operator to select the most suitable reference time; preferably, there are a first, a second and a third adjustment position for detecting the closed position, the opening position, and also the intermediate opening position of diaphragm 7, respectively ( Fig. 1 ).
  • the longitudinal welding unit 60 starts forming a bag from the plastic material film, the side edges of which are progressively folded, arranged side-by-side and then welded to one another by means of a longitudinal welding unit to form a tubular package.
  • the lower closing of such a package is achieved by the transversal welding unit 3 which transversely welds the two edges, thus forming what will become the base of the bag.
  • the weighing unit 2 firstly measures the weight of the fed pasta and then discharges the desired amount of pasta through the hopper 23 towards the shutter unit 1.
  • the shutter unit 1 holds the dose until the welding of the bag base is completed and lets the dose of pasta fall through the discharge and forming tube 20 into the bag itself.
  • the blades 4a, 4b, 4c of diaphragm 7 are moved by the moving means 10 and simultaneously rotate going from the closed position ( Figs. 1 , 5 ) to the opening position ( Figs. 9 , 10 ) of diaphragm 7.
  • the brushless motor 11 moves the crank 6 which, in turn, by means of the connecting rod 12, causes a rotation of T-handle 13, and thus of the first blade 4a of diaphragm 7, about the first pin 5a.
  • T-handle 13 by cooperating with the tie rods 14 simultaneously also rotates the respective cranks 15 pivoted in said second and third pins 5b, 5c and thus the second and third blades 4b, 4c of diaphragm 7 ( Fig. 10 ).
  • opening 19 is created which causes the pasta to fall through the discharge and forming tube 20 into the bag being formed.
  • the shutter unit 1 then goes to the closed position of diaphragm 7, waiting for receiving a new dose of pasta to be discharged into the next bag.
  • the upper level of pasta inserted into the bag will be uniform because there will be no undesired tail of the flow of pasta falling from the shutter unit, thus resulting in an optimal conformity of the bag itself. Furthermore, the risk of pasta residues present between the edges of the package is considerably reduced, so that the upper transversal welding of the bag can then ensure an optimal closing of the bag and thus the product quality preservation.

Claims (7)

  1. Verschlusseinheit (1), die an einem Rahmen (25) einer vertikal durchströmten Verpackungsmaschine (100) für kurze Pasta fixierbar ist, wobei die Verschlusseinheit (1) konfiguriert ist, um eine Dosis von kurzen Pasta von wenigstens einer Wiegeeinheit (2) von zugeführten kurzen Pasta aufzunehmen, sie zu halten und sie darauffolgend in das Innere eines Beutels abzuführen, der durch Schweißeinheiten (3, 60) ausgebildet ist, wobei die Verschlusseinheit (1) eine Grundebene (18) umfasst, die am Rahmen (25) der Verpackungsmaschine (100) fixierbar ist und mit einem zentralen Loch (19) versehen ist, das über dem Beutel (19), der ausgebildet ist, liegt und mit diesem vertikal ausgerichtet ist, und einer Wandscheibe (7) mit beweglichen Klingen, die in einer Ebene enthalten ist, die parallel über der Grundebene (18) liegt, dadurch gekennzeichnet, dass die Klingen eine erste, eine zweite und eine dritte Klinge (4a, 4b, 4c) umfassen, die radial angeordnet sind und jeweils an einem ersten, einem zweiten und einem dritten Stift (5a, 5b, 5c) drehbar gelagert sind, die senkrecht fixiert und wechselseitig gleich beabstandet auf der der Grundebene (18) an Scheitelpunkten eines Dreiecks sind und durch eine Bewegungseinrichtung (10) bewegt werden, um die Klingen (4a, 4b, 4c) zwischen einer geschlossenen Position der Wandscheibe (7), in welcher Position die Klingen (4a, 4b, 4c) wechselseitig Seite an Seite sind und die Dosis von kurzen Pasta durch die Verschlusseinheit (1) gehalten wird, und einer Öffnungsposition der Wandscheibe (7), in welcher Position die Klingen (4a, 4b, 4c) voneinander entfernt sind, gleichzeitig zu drehen, was eine im Wesentlichen kreisförmige Öffnung (22) erzeugt, die mit dem zentralen Loch (19) der Grundebene (18) vertikal ausgerichtet ist, um die Dosis von kurzen Pasta in einer Formation in das Innere des Beutels abführen zu lassen.
  2. Verschlusseinheit (1) nach Anspruch 1, dadurch gekennzeichnet, dass sie eine zweite Ebene (21) umfasst, die in Bezug auf die Grundebene (18) bei einer niedrigeren Höhe in Bezug auf die Ebene der Klingen (4a, 4b, 4c) parallel angeordnet ist, wobei die zweite Ebene (21) die Klingen (4a, 4b, 4c) streifend ist und weiterhin eine zentrales Loch (22) umfasst, das das zentrale Loch (19) der Grundebene überlappt und von gleichen Ausmaßen in Bezug auf dieses ist.
  3. Verschlusseinheit (1) nach Anspruch 1, dadurch gekennzeichnet, dass die Bewegungseinrichtung (100) einen bürstenlosen Motor (11) umfasst, der durch eine Steuereinheit der Verpackungsmaschine (100) angetrieben wird und mit einer Kurbelwelle (6) versehen ist, die mit einer Verbindungsstange (12) verbunden ist, die wiederum mittels eines metallischen Stifts (34) an einem T-Griff (13) eingehängt ist, der integral mit der ersten Klinge (4a) ist, wobei der T-Griff (13) bei dem ersten Stift (5a) drehbar gelagert ist und über eine erste und eine zweite Zugstange (14) mit jeweiligen Kurbelwellen (15) verbunden ist, die bei dem zweiten und dem dritten Drehzapfen (5b, 5c) drehbar gelagert sind und auch integral mit der zweiten und der dritten Klinge (4b, 4c) der Wandscheibe (7) sind.
  4. Verschlusseinheit (1) nach Anspruch 3, dadurch gekennzeichnet, dass der bürstenlose Motor (11) an einer Stützstruktur (30) angebracht ist, die an der Oberkante der Grundebene (18) der Verschlusseinheit (1) fixiert ist, wobei die Stützstruktur (30) eine obere Wand (31) umfasst, an welcher der bürstenlose Motor (11) so fixiert ist, dass die Verbindungsstange (12) frei ist, unter die obere Wand (31) zu verrücken.
  5. Verschlusseinheit (1) nach Anspruch 4, dadurch gekennzeichnet, dass sie einen Null-Sensor (33) umfasst, der in einem Führungsschlitz (32) der oberen Wand (31) untergebracht ist und mit der Steuereinheit der Verpackungsmaschine (100) verbunden ist, wobei der Null-Sensor (33) konfiguriert ist, um das Vorbeilaufen des Stifts (34) zu erfassen, um einen vollständigen Betriebszyklus der Wandscheibe (7) zu bestimmen und die Verschlusseinheit (1) mit der Wiegeeinheit (2) und den Schweißeinheiten (3, 60) zu koordinieren.
  6. Verschlusseinheit (1) nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass sie durch einen Rahmen (24) gestützt ist, der am Rahmen (25) der Verpackungsmaschine (100) fixierbar ist, so dass die Verschlusseinheit (1) zwischen der Wiegeeinheit (2) von zugeführter kurzer Pasta und der Schweißeinheit (3) vertikal positioniert ist, wobei der Rahmen (24) einen U-förmigen Teilbereich (26) umfasst, der durch ein Paar von mit einer Fixiereinrichtung versehenen Armen (27) am Rahmen (25) gestützt ist.
  7. Vertikal durchströmte Verpackungsmaschine (100) für kurze Pasta, dadurch gekennzeichnet, dass sie eine Verschlusseinheit (1) umfasst, wie sie in den Ansprüchen 1-6 beansprucht ist.
EP15184284.6A 2014-09-11 2015-09-08 Verschlusseinheit für einen vertikalflussverpackungsmaschine für kurze nudeln Active EP2995560B1 (de)

Applications Claiming Priority (1)

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ITMI20141575 2014-09-11

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EP2995560B1 true EP2995560B1 (de) 2018-02-07

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EP (1) EP2995560B1 (de)
BR (1) BR102015022598B1 (de)
ES (1) ES2667703T3 (de)
MA (1) MA39697A (de)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6182421B1 (en) * 1997-11-10 2001-02-06 John T. Sullivan Method of manufacturing an article
PL2377761T3 (pl) * 2009-01-15 2015-08-31 Ohki Co Ltd Urządzenie do napełniania i pakowania
JP5367634B2 (ja) * 2010-04-28 2013-12-11 株式会社イシダ 縦型製袋包装機
JP5918980B2 (ja) * 2011-02-04 2016-05-18 株式会社イシダ 製袋包装機

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* Cited by examiner, † Cited by third party
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EP2995560A1 (de) 2016-03-16
MA39697A (fr) 2018-02-06
BR102015022598A2 (pt) 2016-03-15
ES2667703T3 (es) 2018-05-14
BR102015022598B1 (pt) 2020-12-22

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