EP0839723A1 - Vorrichtung zum Zuführen und Schneiden von Folien in einer Verpackungsmaschine - Google Patents

Vorrichtung zum Zuführen und Schneiden von Folien in einer Verpackungsmaschine Download PDF

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Publication number
EP0839723A1
EP0839723A1 EP97830541A EP97830541A EP0839723A1 EP 0839723 A1 EP0839723 A1 EP 0839723A1 EP 97830541 A EP97830541 A EP 97830541A EP 97830541 A EP97830541 A EP 97830541A EP 0839723 A1 EP0839723 A1 EP 0839723A1
Authority
EP
European Patent Office
Prior art keywords
film
roller
rollers
cutting
correspondence
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP97830541A
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English (en)
French (fr)
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EP0839723B1 (de
Inventor
Rodolfo Bettini
Giuseppe Ponti
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aetna Group SpA
Original Assignee
DIMAC SpA
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Filing date
Publication date
Application filed by DIMAC SpA filed Critical DIMAC SpA
Publication of EP0839723A1 publication Critical patent/EP0839723A1/de
Application granted granted Critical
Publication of EP0839723B1 publication Critical patent/EP0839723B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/25—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
    • B26D1/34—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut
    • B26D1/40—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and coacting with a rotary member
    • B26D1/405—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and coacting with a rotary member for thin material, e.g. for sheets, strips or the like
    • 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
    • B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
    • B65B11/06—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths
    • B65B11/08—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths in a single straight path
    • B65B11/10—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths in a single straight path to fold the wrappers in tubular form about contents
    • 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
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/04—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages
    • B65B61/06—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages by cutting
    • B65B61/08—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages by cutting using rotary cutters

Definitions

  • the present invention relates to a device for feeding and cutting film in product packaging machines, with particular reference to the treatment of products such as bottles, cans or any product with cylindrical - parallelepiped shape.
  • automated machines of the aforesaid kind present a line for working upon and feeding bottles to subsequent intermediate stations for positioning and forming the products and stations for wrapping or packaging groups of products in plastic wrappers.
  • the purpose ofthe intermediate positioning and forming stations is to define, by number, pre-determined groups of products (which vary depending on the dimensions and on the packaging to be performed, for instance in the case of bottles it may be defined by two rows comprising three successive bottles) and to transport the products towards the aforesaid wrapping stations, at the end of which the group of products thus defined leaves the station and moves on, through a transport line, to a final station for the definition of the packaging of the products themselves, normally by means of heat-shrinking film.
  • pre-determined groups of products which vary depending on the dimensions and on the packaging to be performed, for instance in the case of bottles it may be defined by two rows comprising three successive bottles
  • the aforesaid wrapping packaging stations are provided with a system for feeding a reeled film (which will make up the aforesaid wrappers) made of plastic material, heat-shrinking, continuously fed by a related station placed lower than the product transport plane.
  • This feeding station carries the film, through an appropriate conveyor belt and according to a direction matching the direction of advance of the products, to the transport plane of the products themselves; here, an appropriate wrapping "bridge” guides (through the use of bars for the suspension of the film, driven by parallel chains) the film above the groups and allows them to be wrapped during the advance.
  • the group of products is wrapped by the film which unreels along the same direction of advance as the products, film which presents its ends partially overlapping at the end of the wrapping and which leaves the group of products open in correspondence with the vertical lateral faces of the group.
  • the shrinking of the film on the product itself will be defined by the heat-shrinking characteristic of the film, as is well known in this sector.
  • the first one comprises a cutting and feeding group provided with means for supporting and moving a knife, comprising in turn a pair of chains, parallel and opposite to each other, closed in a loop on a corresponding pair of gear wheels whereof one is motor-driven and in phase with the machine;
  • the pair of chains supports the knife rigidly and bilaterally so as to allow it to be moved continuously, through a nearly oval track, such as to bring the knife itself, cyclically, into a position (perpendicular to a transport plane and in correspondence thereto) interfereing with and cutting a section of film at a speed higher than the speed of advance of the film.
  • a second solution by the same Applicant (see patent EP 581.747), entails a structure comprising a knife positioned immediately below the transport plane of the products, a pair of film-feeding rollers positioned upstream of the knife with respect to the direction of advance of the film.
  • the knife in order to cut, is moved along a straight line, in both directions, and cross-wise with respect to the development of the film.
  • the unreeling and cutting times are obtained by means of a device comprising a pair of opposite walls, positioned on the transport plane and supporting a plurality of gear wheels positioned at different heights from the plane.
  • Such wheels drive related chains closed in a loop, supporting a series of bars.
  • the adjustable setting of the wheels with respect to the transport plane determines a senes ofpositions of the bars ranging from: intercepting the film subsequent to the interception of its end by a group of products; to the vertical lifting, above the group of products, of the unreeling film; to the subsequent approach to the plane with pause in the unreeling of the film which allows it to be cut; to an advance with respect to the transport plane with retrieval ofthe film over the products, with its release in correspondence with the front face of the group of products.
  • the cutting group comprises a complex structure in order to obtain a high level of productivity for the entire station, particularly in regard to the speed of execution and to the number of sections of film produced per unit of time, and therefore it is only advantageous if it is inserted within machines with high productivity which require high performance from the cutting groups, and which therefore can justify high acquisition prices.
  • the second solution is definitely cheaper than the first one, but it is limited in the amount of film sections cut per unit of time; limitations due mostly to the architecture given to the run of the bars which guide the film as it unreels, which must effect a pause in the unreeling of the film to allow the extreme edge to be cut.
  • This solution therefore, is better suited to machines positioned differently in the market from the previous one, i.e. machines with lower productivity, per unit of time, than the solutions mentioned above.
  • the subject device allows feeding and cutting film in product packaging machines, machines which in the case shown here, purely by way of non limiting example, package bottles indicated as 5.
  • These machines also comprise a station 1 for feeding the plastic film 2 by a continuous reel (not shown here) in phase with the rest of the movements of the machines.
  • the feeding station 1 is positioned in a place below a transport plane 3 of groups 4 of bottles 5, which travel with a horizontal direction of advance A and at a feeding speed Va in order to feed a station 6 for wrapping the group 4 with a section S of the aforesaid film 2.
  • the feeding station 1 is fitted with cutting means 7 set cross-wise with respect to the development of the machine, which means 7 define the section S with a pre-defined length of the film 2, and always in phase with the rest of the machine.
  • such cutting means 7 comprise a pair of rollers 9 and 10 with counter-rotating motion around respective parallel axes Y and Y'.
  • Rollers 9 and 10 are positioned in proximity of a pass-through slot 8, and between them is interposed, in correspondence with a first tangential contact point (indicated as P1), the aforesaid transiting film 2.
  • the first roller 9, fitted with a rubber-covered surface 9s, is provided with a knife 11 protruding radially from the first roller itself; which knife 11 can be partially housed, during a cutting rotation (which shall be seen better further on in the description), inside a radial throat 12 presented by the second roller 10.
  • the latter roller is also fitted with a plane facet 13 on its outer surface, obtained downstream from the throat 12 with respect to the direction of rotation, indicated as S1, of the second roller 10.
  • Such first facet 13 defines a free passage channel for the film 2.
  • the designation 14 indicates adjustable means for imparting motion to the aforesaid two rollers 9 and 10, means 14 which may comprise, for instance, a single brushless motor 14m connected kinematically, in a direct manner, to the two rollers 9 and 10 by means of a belt 14c and related pulleys 14p, 9p and 10p, or through another direct or indirect driving means through coupling and uncoupling clutch groups (not shown here).
  • This waiting configuration of the rollers 9 and 10 allows a pre-determined quantity of film 2 to unreel towards the transport plane 3 through the free passage channel defined by the first facet 13.
  • rollers 9 and 10 are activated, as visible in Figure 3 and indicated by the arrow F on the roller 9, in counter-rotation and at least at a first speed V1 sufficient to define the cut of the film 2 in correspondence with a free rear edge 2b, thus obtaining the aforesaid section S.
  • the number 15 indicates in Figures 1 and 2 means for holding the film 2 acting thereupon to maintain it in contact with the second roller 10 during the cutting operation on the film 2 defining the previous section S.
  • the aforesaid holding means 15 comprise a third roller 16, motor driven and in phase with the aforesaid rollers 9 and 10 thanks to the connection with the aforesaid motor 14m by means of a related pulley 16p.
  • the third roller rotates around a related axis Y"parallel and below the axes Y and Y' of rotation of the rollers 9 and 10 with respect to the transport plane 3.
  • This third roller 16, presenting a rubber-covered cylindrical surface 16s, is in tangential contact, in a second point indicated as P2, with the second roller 10.
  • Such third roller 16 moreover, presents a second plane facet 17 on its own outer circumference positioned in proximity of a second point of tangential contact P2 when the two aforesaid rollers 9 and 10 are in the aforesaid waiting configuration: in this way the film 2 can pass freely also in correspondence with this point of tangency P2, while, simultaneously with the cutting activation of the rollers 9 and 10, the third roller 16 affects a rotation such as to maintain the contact between the film 2 as it advances and the second roller 10, preventing its return towards the aforesaid reel due to the detachment of the film 2 from the section S just defined.
  • the number 18 in Figure 2 indicates means able to generate a vacuum, which are obtained on the second roller 10 and act only on a part of the outer circumference of the second roller 10.
  • Such means 18 hold the aforesaid subsequent free edge 2a of the film 2 on the second roller 10, when the edge itself must move beyond the pair of rollers 9 and 10 immediately after the previous section S has been cut: the holding action is necessary since the high speeds involved, coupled with an electrostatic charge inherent in the characteristics of the plastic film 2 could cause the film itself to deviate towards the first roller 9.
  • such vacuum generating means 18 can comprise a longitudinal air intake duct 19, inside the second roller 10, and connected to a plurality of radial ducts 20 parallel to each other and leading only onto an area of the outer cylindrical surface of the second roller 10; the subsequent free front edge 2a is detached from the second roller 10 by a fixed guiding wall 21 positioned between the second roller itself and the slot 8 (see Figure 2).
  • the second roller 10 presents a circumferential distance, i.e.
  • the wrapping station 6 is provided with wrapping means 30, comprising a plurality of equidistant bars 31 and driven by a pair of chains closed in a loop and passing over a bridge frame 33 positioned above the transport plane 3.
  • Each bar 31 intercepts the film 2 passing beyond the slot 8 (upstream) and subsequently to the passage of the group 4 of products 5 beyond the same slot.
  • the bar 31 allows a related unreeling at altitude of the film 2 to go beyond the group 4 of products 5, since the bars 31 move at a speed Vt higher than the speed of advance Va of the groups 4, and such as to allow the group 4 to be wrapped along the direction of advance A with the section S of film 2.
  • the two rollers 9 and 10 must present the aforesaid tangential cutting velocity V1 higher than the speed of advance Vt of the bars 31 in order to obtain the aforesaid cutting rotation in correspondence with the unreeling of the film 2 at altitude by means of bars 31.
  • first and the second roller 9 and 10 present the aforesaid first tangential cutting velocity V1 higher than the aforesaid feeding speed Va, while in the rotation for feeding the film 2, subsequent to the cut, the rollers 9 and 10 present a second velocity V2 essentially equal to the feeding speed Va of the group 4 of products 5: in this way, the rear free edge 2b just cut is distanced from the subsequent front free edge 2a, whilst at the same time the latter is advanced in phase with the group 4 of products 5 which is due to intercept it, preventing overlaps with the previous section S.
  • the subject device fully attains its set goals, thanks to a compact structure whose minimal size derives from the use of only three rollers for all film feeding and cutting phases.
  • the sequence of phases which determines the steady-state operation of the device allows an extremely flexible adjustment of the device itself, thanks to which it is possible to change a format in a very short time, simply adjusting the activation times of the roller cut according to the length of the film to be fed.
  • This extreme flexibility enables the device to be mounted on any type of packaging machine, whether the machine is destined to applications wherein the packaging rate of groups of products per unit of time is medium - high or medium - low, since the structure of the device itself allows a high operating rate at steady state regardless of the type of operation of the product packaging stations.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Basic Packing Technique (AREA)
EP97830541A 1996-10-31 1997-10-23 Vorrichtung zum Zuführen und Schneiden von Folien in einer Verpackungsmaschine Expired - Lifetime EP0839723B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT96BO000555A IT1286741B1 (it) 1996-10-31 1996-10-31 Dispositivo per l'alimentazione ed il taglio di film in macchine condizionatrici di prodotti
ITBO960555 1996-10-31

Publications (2)

Publication Number Publication Date
EP0839723A1 true EP0839723A1 (de) 1998-05-06
EP0839723B1 EP0839723B1 (de) 2003-03-05

Family

ID=11341688

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97830541A Expired - Lifetime EP0839723B1 (de) 1996-10-31 1997-10-23 Vorrichtung zum Zuführen und Schneiden von Folien in einer Verpackungsmaschine

Country Status (3)

Country Link
EP (1) EP0839723B1 (de)
DE (1) DE69719447T2 (de)
IT (1) IT1286741B1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1256519A1 (de) 2001-05-09 2002-11-13 AETNA GROUP S.p.A. Vorrichtung zum Umhüllen von Produktgruppen mit Kunststofffolie
EP1379457A1 (de) 2001-04-10 2004-01-14 Cermex-Quest Conditionnement Verfahren zum rüsten einer einwickelmaschine mit folie, und einwickelmaschine zur durchführung des verfahrens
EP1500592A1 (de) 2003-07-22 2005-01-26 AETNA GROUP S.p.A. Vorrichtung zum Umwickeln von gruppierten Gegenständen
CN109515873A (zh) * 2018-11-12 2019-03-26 阜阳洁平日化有限公司 一种洁厕灵打包用包装机
CN113478571A (zh) * 2021-07-06 2021-10-08 全成信电子（深圳）股份有限公司 一种处理菲林圆角的夹具和工艺

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018128351B3 (de) * 2018-11-13 2020-02-20 Khs Gmbh Vorrichtung und Verfahren zur Umhüllung von Behältergruppen

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0491666A1 (de) * 1990-12-18 1992-06-24 Dimac S.P.A. Mechanismus zum Zuführen und Zerschneiden von Folienbahnen zur Verwendung in automatischen Verpackungsmaschinen
GB2255952A (en) * 1991-04-03 1992-11-25 Baumer Srl Wrapping machine.
JPH0551018A (ja) * 1991-08-13 1993-03-02 Ibaraki Seiki Kk シユリンク包装装置
EP0573944A1 (de) * 1992-06-12 1993-12-15 G.D Societa' Per Azioni Zuführ- und Schneidevorrichtung für Wickelmaterial in einer Einwickelmaschine für Gegenstände
EP0707928A1 (de) * 1994-10-17 1996-04-24 Asahi Machinery Limited Rotierendes Schneidwerkzeug

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0491666A1 (de) * 1990-12-18 1992-06-24 Dimac S.P.A. Mechanismus zum Zuführen und Zerschneiden von Folienbahnen zur Verwendung in automatischen Verpackungsmaschinen
GB2255952A (en) * 1991-04-03 1992-11-25 Baumer Srl Wrapping machine.
JPH0551018A (ja) * 1991-08-13 1993-03-02 Ibaraki Seiki Kk シユリンク包装装置
EP0573944A1 (de) * 1992-06-12 1993-12-15 G.D Societa' Per Azioni Zuführ- und Schneidevorrichtung für Wickelmaterial in einer Einwickelmaschine für Gegenstände
EP0707928A1 (de) * 1994-10-17 1996-04-24 Asahi Machinery Limited Rotierendes Schneidwerkzeug

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 017, no. 358 (M - 1440) 7 July 1993 (1993-07-07) *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1379457A1 (de) 2001-04-10 2004-01-14 Cermex-Quest Conditionnement Verfahren zum rüsten einer einwickelmaschine mit folie, und einwickelmaschine zur durchführung des verfahrens
EP1256519A1 (de) 2001-05-09 2002-11-13 AETNA GROUP S.p.A. Vorrichtung zum Umhüllen von Produktgruppen mit Kunststofffolie
US6739115B1 (en) 2001-05-09 2004-05-25 Aetna Group S.P.A. Equipment for wrapping groups of products in plastic film
EP1500592A1 (de) 2003-07-22 2005-01-26 AETNA GROUP S.p.A. Vorrichtung zum Umwickeln von gruppierten Gegenständen
US7117658B2 (en) 2003-07-22 2006-10-10 Aetna Group, S.P.A. Apparatus for wrapping groups of products
CN109515873A (zh) * 2018-11-12 2019-03-26 阜阳洁平日化有限公司 一种洁厕灵打包用包装机
CN113478571A (zh) * 2021-07-06 2021-10-08 全成信电子（深圳）股份有限公司 一种处理菲林圆角的夹具和工艺
CN113478571B (zh) * 2021-07-06 2022-08-26 全成信电子（深圳）股份有限公司 一种处理菲林圆角的夹具和工艺

Also Published As

Publication number Publication date
EP0839723B1 (de) 2003-03-05
DE69719447D1 (de) 2003-04-10
ITBO960555A0 (it) 1996-10-31
ITBO960555A1 (it) 1998-05-01
IT1286741B1 (it) 1998-07-17
DE69719447T2 (de) 2003-12-24

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