EP0573944B1 - Wrapping material feed and cutting device for product wrapping machines - Google Patents

Wrapping material feed and cutting device for product wrapping machines Download PDF

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Publication number
EP0573944B1
EP0573944B1 EP93109133A EP93109133A EP0573944B1 EP 0573944 B1 EP0573944 B1 EP 0573944B1 EP 93109133 A EP93109133 A EP 93109133A EP 93109133 A EP93109133 A EP 93109133A EP 0573944 B1 EP0573944 B1 EP 0573944B1
Authority
EP
European Patent Office
Prior art keywords
path
cutting
strip
feed
station
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.)
Expired - Lifetime
Application number
EP93109133A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0573944A1 (en
Inventor
Silvano Boriani
Antonio Gamberini
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.)
GD SpA
Original Assignee
GD SpA
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Filing date
Publication date
Application filed by GD SpA filed Critical GD SpA
Publication of EP0573944A1 publication Critical patent/EP0573944A1/en
Application granted granted Critical
Publication of EP0573944B1 publication Critical patent/EP0573944B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • B65B19/00—Packaging rod-shaped or tubular articles susceptible to damage by abrasion or pressure, e.g. cigarettes, cigars, macaroni, spaghetti, drinking straws or welding electrodes
    • B65B19/02—Packaging cigarettes
    • B65B19/22—Wrapping the cigarettes; Packaging the cigarettes in containers formed by folding wrapping material around formers
    • B65B19/228—Preparing and feeding blanks

Definitions

  • the present invention relates to a device for feeding and cutting wrapping material on product wrapping machines.
  • the present invention relates to a device for feeding and cutting wrapping material, wherein the wrapping material to be cut is advanced in a stepped manner.
  • the present invention is particularly suitable for use on machines for wrapping cigarette packets in general, and cigarette cartons in particular, to which the following description refers purely by way of example.
  • Wrapping machines of the aforementioned type are known to employ feed and cutting devices featuring an input unit for step feeding a paper strip to a cutting station.
  • the input unit normally comprises a first elastic cylindrical roller, usually made of rubber or similar elastomeric material; and a second metal roller tangent to the elastic roller and having a flat axial portion.
  • the flat portion limits the cylindrical outer surface of the second roller to a given arc, so that the circumferential length of the cylindrical surface is equal to the length of a sheet of wrapping material cut off the strip by a cutting unit located in the cutting station downstream from the input unit, and connected functionally to the input unit by a conveyor normally consisting of a roller conveyor.
  • the two input unit rollers are rotated continuously in opposite directions, so as to step feed the strip along the conveyor and through the cutting unit.
  • the strip is only advanced when the cylindrical surface of the second roller contacts that of the elastic roller, and by a distance equal to the length of the sheet of wrapping material being produced.
  • feed devices of the above type present several functional drawbacks, all substantially due to the fact that the strip portion extending beyond the input unit in the feed direction is pushed and may curl against any obstacle, e.g. the fixed blade of the cutting unit, interposed between the feed unit and the output conveyor by which the cut sheets are withdrawn.
  • any obstacle e.g. the fixed blade of the cutting unit
  • a device for feeding and cutting wrapping material on product wrapping machines comprising an input feed unit for step feeding a continuous strip of said wrapping material; a cutting station; a cutting unit in said cutting station; and an output conveyor; the feed and cutting units and the output conveyor being arranged successively along a first strip feed path; and the cutting unit comprising a fixed blade, and a movable blade, a cutting edge of which travels along a second path tangent to a cutting edge of the fixed blade; the device further comprising first gripping means associated with the movable blade for movement therewith along said second path, said first gripping means being adapted to engage an end portion of the strip and to feed same through the cutting station to the output conveyor; and second gripping means carried by the output conveyor for engaging the strip; said second path being a cylindrical path intersecting the first path at the cutting station and thus flexing the strip.
  • Numeral 1 in the accompanying drawing indicates a device for feeding and cutting wrapping material on a machine 2 for wrapping cartons of cigarettes (not shown).
  • Device 1 comprises an input feed unit 3 for a continuous strip 4 of wrapping material; a cutting station 5 housing a cutting unit 6 for cutting strip 4 into a number of portions 7 of given length; and an output conveyor 8 for withdrawing portions 7 from station 5.
  • Feed and cutting units 3, 6 and conveyor 8 are arranged successively along a substantially flat strip feed path 9.
  • Unit 3 comprises a cylindrical roller 10 rotating clockwise in the drawing about a respective axis 11 perpendicular to path 9 and to the drawing plane; and a conveyor 12 in turn comprising a number of known suction belts 13 (only one shown) mutually spaced side by side.
  • Each belt 13 is looped about two cylindrical guide rollers 14 and 15, the first of which is mounted for rotation about an axis 16 parallel to axis 11, and is located adjacent to station 5; and the second of which is located substantially tangent to roller 10, and is connected to a motor 17 by which it is step rotated, in the opposite direction to roller 10, about an axis 18 parallel to axes 11 and 16.
  • Rollers 14 and 15 divide belts 13 into a delivery or transportation branch 19 extending along an initial portion of path 9; and a return branch 20.
  • Unit 3 also comprises a comb element 21, which presents a number of teeth 22 (only one shown), each extending between two adjacent belts 13, and is connected to one end of a control arm 23, the other end of which is fitted to an operating shaft 24.
  • Shaft 24 is located between delivery and return branches 19 and 20, parallel to axes 16 and 18, and is connected to a motor 25 so as to oscillate about its axis and move comb element 21 to and from an operating position wherein teeth 22 are positioned coplanar and parallel to delivery branches 19 of belts 13 and between rollers 14.
  • Conveyor 8 is defined by a number of known suction belts 26 arranged side by side and looped about two guide rollers 27 (only one shown).
  • One of rollers 27 is located adjacent to and downstream from station 5 in the travelling direction of strip 4 along path 9, and is connected to a motor 28 so as to rotate, about axis 29 parallel to axes 16 and 18, at such a speed that the travelling speed of belts 26 is slightly greater than the maximum travelling speed of belts 13.
  • Rollers 27 divide each belt 26 into a return branch 31, and a transportation branch 30 extending along the end portion of path 9, substantially closing the suction box 32 of conveyor 8, and coplanar with branches 19 of belts 13.
  • belts 26 need not be suction types, and the cylindrical surface of roller 27 next to comb element 21 may present a number of openings communicating with a suction source.
  • Cutting unit 6 comprises a fixed blade 33 housed inside a gap 34 defined laterally by rollers 14 and 27 downstream from comb element 21 in the travelling direction of strip 4 along path 9, and the cutting edge 35 of which is located beneath a transportation surface 36 defined by branches 19 of belts 13.
  • belts 13 are dispensed with, and transportation surface 36 is defined by a succession of rollers interposed between rollers 14 and 15, or by a fixed surface.
  • Unit 6 also comprises a cutting roller 37 facing fixed blade 33 and in turn comprising a fixed cylindrical central portion 38, and a peripheral annular-section portion 39, which, by means of motor 41, is rotated clockwise in the drawing about portion 38 and about a respective axis 40 parallel to axes 16 and 29.
  • Roller 37 supports a cutting blade 42 connected integral with portion 39 so as to project outwards of lateral surface 39a of portion 39, and terminating with a cutting edge 43.
  • cutting edge 43 travels along a cylindrical path 44 tangent to edge 35 of blade 33 and intersecting path 9 and, in particular, the plane of transportation surface 36 at station 5.
  • each tooth 22 presents a recess 22a, the bottom surface 22b of which consists of a cylindrical surface portion substantially coinciding with a corresponding portion of path 44 when element 21 is set to the operating position.
  • Cutting roller 37 comprises a suction sector 45 connected to outer surface 39a of portion 39 immediately upstream from blade 42 in the rotation direction of roller 37, and defined radially outwards by a cylindrical surface 46 coaxial with surface 39a and roughly coinciding with a portion of cylindrical path 44.
  • Sector 45 presents a number of radial channels 47 forming part of a reversible suction circuit 48, and each communicating externally at one end and, at the other end, with one of a pair of main channels 49 formed through portion 39.
  • Circuit 48 also comprises a chamber 50 formed in portion 38 and communicating with a known suction device (not shown) via an axial conduit 51 formed in portion 38.
  • Chamber 50 is formed substantially facing station 5, and is so shaped and sized as to communicate with at least one of channels 49 when at least part of surface 46 corresponds with the portion of path 44 intersecting path 9.
  • comb element 21 prevents the leading end of strip 4 from possibly adhering to blade 33 after the cutting operation; while sector 45 provides for "drawing" strip 4 at all times as it is fed forward, thus preventing it from sticking or curling.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Adhesive Tape Dispensing Devices (AREA)
  • Wrapping Of Specific Fragile Articles (AREA)
EP93109133A 1992-06-12 1993-06-07 Wrapping material feed and cutting device for product wrapping machines Expired - Lifetime EP0573944B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBO920238A IT1257828B (it) 1992-06-12 1992-06-12 Dispositivo di alimentazione e taglio di materiale di incarto in macchine incartatrici di prodotti
ITBO920238 1992-06-12

Publications (2)

Publication Number Publication Date
EP0573944A1 EP0573944A1 (en) 1993-12-15
EP0573944B1 true EP0573944B1 (en) 1997-03-26

Family

ID=11338370

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93109133A Expired - Lifetime EP0573944B1 (en) 1992-06-12 1993-06-07 Wrapping material feed and cutting device for product wrapping machines

Country Status (5)

Country Link
EP (1) EP0573944B1 (ja)
JP (1) JP2520565B2 (ja)
BR (1) BR9302287A (ja)
DE (1) DE69309157T2 (ja)
IT (1) IT1257828B (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009044897A1 (de) 2009-12-15 2011-06-16 Krones Ag Vorrichtung und Verfahren zum gruppenweisen Verpacken von Gegenständen

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1286741B1 (it) * 1996-10-31 1998-07-17 Dimac Spa Dispositivo per l'alimentazione ed il taglio di film in macchine condizionatrici di prodotti
CN108955414B (zh) * 2018-09-12 2023-07-21 浏阳市万盛烟花制造有限公司 一种小内经烟花全自动包装机
CN110342010A (zh) * 2019-07-29 2019-10-18 艾达(广东)智能设备有限公司 转帖系统及复合系统

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2407767C3 (de) * 1974-02-19 1978-04-27 Focke & Pfuhl, 3090 Verden Verfahren und Vorrichtung zum Einschlagen von Zigarettengruppen o.dgl
DE3340408A1 (de) * 1983-11-09 1985-05-15 Focke & Co, 2810 Verden Vorrichtung zum einhuellen von gegenstaenden, insbesondere zigaretten-gruppen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009044897A1 (de) 2009-12-15 2011-06-16 Krones Ag Vorrichtung und Verfahren zum gruppenweisen Verpacken von Gegenständen
EP2336037A1 (de) 2009-12-15 2011-06-22 Krones AG Vorrichtung und Verfahren zum gruppenweisen Verpacken von Gegenständen

Also Published As

Publication number Publication date
ITBO920238A1 (it) 1993-12-12
EP0573944A1 (en) 1993-12-15
BR9302287A (pt) 1994-01-11
JPH0656333A (ja) 1994-03-01
IT1257828B (it) 1996-02-13
DE69309157T2 (de) 1997-10-30
ITBO920238A0 (it) 1992-06-12
JP2520565B2 (ja) 1996-07-31
DE69309157D1 (de) 1997-04-30

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