EP0696539A1 - Wrapping device for producing packets - Google Patents
Wrapping device for producing packets Download PDFInfo
- Publication number
- EP0696539A1 EP0696539A1 EP95112079A EP95112079A EP0696539A1 EP 0696539 A1 EP0696539 A1 EP 0696539A1 EP 95112079 A EP95112079 A EP 95112079A EP 95112079 A EP95112079 A EP 95112079A EP 0696539 A1 EP0696539 A1 EP 0696539A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- seat
- heating element
- along
- path
- wrapping
- 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
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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
- B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
- B65B51/10—Applying or generating heat or pressure or combinations thereof
- B65B51/14—Applying or generating heat or pressure or combinations thereof by reciprocating or oscillating members
Definitions
- the present invention relates to a wrapping device for producing packets.
- the present invention may be used to advantage on overwrapping machines for packets of cigarettes - to which the following description refers purely by way of example - but may equally be used to advantage on any wrapping machine on which superimposed portions of wrapping material with adhesive material in between are to be heated.
- finished packets produced on a packing machine are covered with a sheet of normally transparent heat-seal material, which is folded about the packet to form a tubular wrapping, the ends of which extend beyond the ends of the packet on to which they are folded to define a protective outer wrapping.
- the folded ends are normally stabilized by means of heat sealing devices located at one or more heat seal stations along the path of the packets, and which heat seal the packets when these are arrested at the stations.
- a wrapping device for producing packets comprising at least one seat traveling in steps along a given path extending through a succession of holding stations at which the seat is arrested; and at least one heating element traveling with said seat along said path; characterized in that said heating element is a passive element comprising a portion defining a heat accumulator; induction means being provided, preferably in a fixed position, in at least some of said holding stations to supply heat to said accumulator.
- Number 1 in Figure 1 indicates a cellophaning machine comprising an overwrapping device 2 for forming a wrapping 3 of transparent material about packets 4 of cigarettes.
- Device 2 comprises a conveyor wheel 5 supported on a frame 6 and located between two walls 7 of frame 6 so as to rotate anticlockwise (in Figure 2) in steps about an axis 8 perpendicular to walls 7.
- Wheel 5 presents a number of peripheral radial seats 9 equally spaced about axis 8, and which are open at their opposite axial ends, and each receive a respective packet 4 with its longitudinal axis 10 parallel to axis 8, and with two end walls 11 of wrapping 3 perpendicular to axis 8 and located at the opposite axial ends of seat 9 facing respective walls 7.
- seats 9 are fed forward by a distance equal to that between two adjacent seats 9, and, at the end of each step, each seat 9 is arrested at a hold station 9a.
- Each wrapping 3 is formed beforehand in known manner (not shown) by folding a sheet of wrapping material (not shown) about packet 4 to form a tubular wrapping (not shown), the opposite end portions (not shown) of which project beyond the respective ends of packet 4, and are folded in known manner (not shown) to form four tabs (not shown) which are folded squarely on to one another and stabilized by heat sealing as packet 4 is fed forward by wheel 5.
- wheel 5 presents a pair of compacting members 12 movable in opposite directions to and from an operating position contacting the outer surface of respective walls 11, and each comprising a square rocker arm 13 pivoting centrally on a respective pin 14 perpendicular to axis 8, and mounted between the ears of a respective fork 15 projecting from a respective axial end surface 16 of wheel 5.
- Rocker arm 13 comprises two arms 17 and 18 extending on either side of pin 14, and of which arm 17 extends inside an axial through cavity 19 formed through wheel 5 radially inwards of seat 9 and separated by a wall 21 from the bottom surface 20 of seat 9.
- Arm 18 on the other hand extends outside respective surface 16, and is fitted integrally on its free end with a heating element 22 facing a respective axial end of respective seat 9.
- Each heating element 22 comprises a sealing plate 23 which, in use, is positioned contacting the outer surface of respective wall 11 when respective compacting member 12 is in the operating position; and a heat accumulating block 24 contacting the surface of plate 23 facing respective wall 7.
- arm 17 of each compacting member 12 is connected to arm 17 of the other compacting member 12 via the interposition of a connecting rod 25, the central portion of which is hinged to the free end of the output rod 26 of a linear actuator 27 located radially inside respective cavity 19 and which provides for moving connecting rod 25 radially outwards in opposition to a spring 28 interposed between connecting rod 25 and wall 21.
- wrapping device 2 also comprises a heating unit 29 in turn comprising a succession of pairs of induction heating members 30; and each heating member 30 - normally comprising a solenoid - in each pair is supported on frame 6 at a respective station 9a, and positioned facing and adjacent to accumulating block 24 of a respective compacting member 12 stationary in station 9a.
- each wall 7 is defined, on the side facing wheel 5, by a surface 31 which presents a recessed portion 32 located a greater distance from wheel 5 than surface 31, and extending over the path portion of compacting members 12 along which members 12 are maintained in the raised idle position.
- Surface 31 and recessed portion 32 present a number of cavities 33, each located at a station 9a, and each housing a cup-shaped casing 34 for a respective heating member 30.
- heating members 30 are fixed heating elements requiring no power supply brushes or similar; and, on the other, compacting members 12, by traveling with packets 4, may cooperate with the packets for a relatively long period of time and at such relatively low operating temperatures as to in no way impair the material of wrappings 3.
- wheel 5 may be the folding or drying wheel of a packing machine, wherein, as opposed to heat sealing, compacting members 12 provide simply for securing in position the gummed parts of the wrapping and drying the gum between the parts.
- device 2 may be operated as described on sheets of wrapping material at least partly comprising metal material (e.g. foil or similar) for heat sealing the superimposed portions of the sheets.
- metal material e.g. foil or similar
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Basic Packing Technique (AREA)
- Package Closures (AREA)
- Wrapping Of Specific Fragile Articles (AREA)
- Auxiliary Devices For And Details Of Packaging Control (AREA)
- Supplying Of Containers To The Packaging Station (AREA)
Abstract
Description
- The present invention relates to a wrapping device for producing packets.
- The present invention may be used to advantage on overwrapping machines for packets of cigarettes - to which the following description refers purely by way of example - but may equally be used to advantage on any wrapping machine on which superimposed portions of wrapping material with adhesive material in between are to be heated.
- On overwrapping machines, finished packets produced on a packing machine are covered with a sheet of normally transparent heat-seal material, which is folded about the packet to form a tubular wrapping, the ends of which extend beyond the ends of the packet on to which they are folded to define a protective outer wrapping.
- On overwrapping machines of the above type, the folded ends are normally stabilized by means of heat sealing devices located at one or more heat seal stations along the path of the packets, and which heat seal the packets when these are arrested at the stations.
- On one known overwrapping machine of the above type, as relatively little time is available for heat sealing the folded ends of the outer wrapping, the heat sealing devices must be brought to such high temperatures as to damage the sheet of overwrapping material if for any reason the machine slows down.
- One attempt to overcome the above drawback has been to equip the machines with movable heat sealing devices, i.e. which travel along with the packets along a portion of the machine, and therefore remain contacting the packets for a relatively long period of time, or at any rate long enough to permit the heat sealing devices to operate at relatively low temperatures.
- Though successfully eliminating the drawback, such a solution seriously complicates the mechanical design and circuitry of the machine, on account of the movable heat sealing devices, which normally feature electric heating systems, requiring movable brushes and electrified tracks which, in addition to complicating the design of the machine, also result in a considerable increase in manufacturing and maintenance cost.
- It is an object of the present invention to provide a wrapping device designed to overcome the aforementioned drawbacks.
- According to the present invention, there is provided a wrapping device for producing packets, the device comprising at least one seat traveling in steps along a given path extending through a succession of holding stations at which the seat is arrested; and at least one heating element traveling with said seat along said path; characterized in that said heating element is a passive element comprising a portion defining a heat accumulator; induction means being provided, preferably in a fixed position, in at least some of said holding stations to supply heat to said accumulator.
- A non-limiting embodiment of the present invention will be described by way of example with reference to the accompanying drawings, in which:
- Figure 1 shows a plan view, with parts removed for clarity, of a portion of a preferred embodiment of the wrapping device according to the present invention;
- Figure 2 shows a front view of a detail in Figure 1;
- Figures 3 and 4 show respective radial sections along lines III-III and IV-IV in Figure 1.
-
Number 1 in Figure 1 indicates a cellophaning machine comprising an overwrappingdevice 2 for forming a wrapping 3 of transparent material aboutpackets 4 of cigarettes.Device 2 comprises aconveyor wheel 5 supported on aframe 6 and located between twowalls 7 offrame 6 so as to rotate anticlockwise (in Figure 2) in steps about an axis 8 perpendicular towalls 7.Wheel 5 presents a number of peripheralradial seats 9 equally spaced about axis 8, and which are open at their opposite axial ends, and each receive arespective packet 4 with itslongitudinal axis 10 parallel to axis 8, and with twoend walls 11 of wrapping 3 perpendicular to axis 8 and located at the opposite axial ends ofseat 9 facingrespective walls 7. - At each step in the rotation of
wheel 5 about axis 8,seats 9 are fed forward by a distance equal to that between twoadjacent seats 9, and, at the end of each step, eachseat 9 is arrested at ahold station 9a. - Each
wrapping 3 is formed beforehand in known manner (not shown) by folding a sheet of wrapping material (not shown) aboutpacket 4 to form a tubular wrapping (not shown), the opposite end portions (not shown) of which project beyond the respective ends ofpacket 4, and are folded in known manner (not shown) to form four tabs (not shown) which are folded squarely on to one another and stabilized by heat sealing aspacket 4 is fed forward bywheel 5. - For this purpose, for each
seat 9,wheel 5 presents a pair of compactingmembers 12 movable in opposite directions to and from an operating position contacting the outer surface ofrespective walls 11, and each comprising asquare rocker arm 13 pivoting centrally on arespective pin 14 perpendicular to axis 8, and mounted between the ears of arespective fork 15 projecting from a respectiveaxial end surface 16 ofwheel 5.Rocker arm 13 comprises twoarms pin 14, and of whicharm 17 extends inside an axial throughcavity 19 formed throughwheel 5 radially inwards ofseat 9 and separated by awall 21 from thebottom surface 20 ofseat 9.Arm 18 on the other hand extends outsiderespective surface 16, and is fitted integrally on its free end with aheating element 22 facing a respective axial end ofrespective seat 9. Eachheating element 22 comprises asealing plate 23 which, in use, is positioned contacting the outer surface ofrespective wall 11 when respective compactingmember 12 is in the operating position; and aheat accumulating block 24 contacting the surface ofplate 23 facingrespective wall 7. - As shown more clearly in Figures 3 and 4,
arm 17 of each compactingmember 12 is connected toarm 17 of the other compactingmember 12 via the interposition of a connectingrod 25, the central portion of which is hinged to the free end of theoutput rod 26 of alinear actuator 27 located radially insiderespective cavity 19 and which provides for moving connectingrod 25 radially outwards in opposition to aspring 28 interposed between connectingrod 25 andwall 21. - In addition to
wheel 5,wrapping device 2 also comprises aheating unit 29 in turn comprising a succession of pairs ofinduction heating members 30; and each heating member 30 - normally comprising a solenoid - in each pair is supported onframe 6 at arespective station 9a, and positioned facing and adjacent to accumulatingblock 24 of a respective compactingmember 12 stationary instation 9a. More specifically, and as shown in Figures 3 and 4, eachwall 7 is defined, on theside facing wheel 5, by asurface 31 which presents arecessed portion 32 located a greater distance fromwheel 5 thansurface 31, and extending over the path portion of compactingmembers 12 along whichmembers 12 are maintained in the raised idle position.Surface 31 andrecessed portion 32 present a number ofcavities 33, each located at astation 9a, and each housing a cup-shaped casing 34 for arespective heating member 30. - Operation of wrapping
device 2 is self-explanatory from the foregoing description. It should be pointed out, however, that, on the one hand,heating members 30 are fixed heating elements requiring no power supply brushes or similar; and, on the other, compactingmembers 12, by traveling withpackets 4, may cooperate with the packets for a relatively long period of time and at such relatively low operating temperatures as to in no way impair the material ofwrappings 3. - Though described as forming part of a
cellophaning machine 1,device 2 may of course also be applied to other types of machine. For example,wheel 5 may be the folding or drying wheel of a packing machine, wherein, as opposed to heat sealing, compactingmembers 12 provide simply for securing in position the gummed parts of the wrapping and drying the gum between the parts. - Finally,
device 2 may be operated as described on sheets of wrapping material at least partly comprising metal material (e.g. foil or similar) for heat sealing the superimposed portions of the sheets.
Claims (5)
- A wrapping device for producing packets (4), the device comprising at least one seat (9) traveling in steps along a given path extending through a succession of holding stations (9a) at which the seat (9) is arrested; and at least one heating element (22) traveling with said seat (9) along said path; characterized in that said heating element (22) is a passive element comprising a portion defining a heat accumulating block (24); induction means (30) being provided in at least part of said holding stations (9a) to supply heat to said accumulating block (24).
- A device as claimed in Claim 1, characterized in that said induction means (30) are located in a fixed position in respective said holding stations (9a).
- A device as claimed in Claim 1 or 2, characterized in that it comprises a conveyor (5) presenting a number of equally spaced said seats (9) and moving in steps to feed said seats (9) along said path; said conveyor (5) supporting at least one said heating element (22) for each said seat (9).
- A device as claimed in any one of the foregoing Claims, characterized in that said heating element (22) is movable, in relation to said seat (9), to and from a heating operating position.
- A device as claimed in any one of the foregoing Claims, characterized in that each said heating element (22) forms part of a compacting member (12) which, when the heating element (22) is in said heating operating position, cooperates, in use, with one end of a respective packet (4) housed inside said seat (9).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITBO940378 | 1994-08-03 | ||
ITBO940378A IT1274878B (en) | 1994-08-03 | 1994-08-03 | WRAPPING DEVICE FOR THE PRODUCTION OF PACKAGES. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0696539A1 true EP0696539A1 (en) | 1996-02-14 |
EP0696539B1 EP0696539B1 (en) | 1998-06-10 |
Family
ID=11339982
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95112079A Expired - Lifetime EP0696539B1 (en) | 1994-08-03 | 1995-08-01 | Wrapping device for producing packets |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0696539B1 (en) |
JP (1) | JPH0858738A (en) |
CN (1) | CN1055056C (en) |
DE (1) | DE69502890T2 (en) |
IT (1) | IT1274878B (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004011755A1 (en) * | 2004-03-09 | 2005-09-29 | Hauni Maschinenbau Ag | sealer |
DE102006021125A1 (en) * | 2006-05-04 | 2007-11-08 | Focke & Co.(Gmbh & Co. Kg) | Device and method for fixing a product in a receptacle, in particular when producing cigarette packs |
CN110182739A (en) * | 2019-05-28 | 2019-08-30 | 杭州集韵科技有限公司 | Packed beverage filling apparatus and its enclosuring structure |
EP3578468A1 (en) | 2018-06-08 | 2019-12-11 | Theegarten-Pactec GmbH & Co. KG | Method and device for packaging small articles in thermoweldable packaging material with a heatable retaining element |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015001850A1 (en) * | 2015-02-17 | 2016-08-18 | Focke & Co. (Gmbh & Co. Kg) | Device for producing packages |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3380227A (en) * | 1964-02-20 | 1968-04-30 | Molins Organisation Ltd | Packing or wrapping machine of the mould wheel type |
FR2277732A1 (en) * | 1974-07-10 | 1976-02-06 | Gd Spa | WELDING DEVICE FOR CONTROLLING SHELLS OF THERMOPLASTIC MATERIAL, ESPECIALLY IN OVERPACKING MACHINES, FOR EXAMPLE OF CIGARETTE PACKAGES OR SIMILAR PRODUCTS |
DE3717621A1 (en) * | 1986-07-02 | 1988-01-14 | Nagema Veb K | METHOD FOR WARMING UP WRAPPING MATERIAL |
-
1994
- 1994-08-03 IT ITBO940378A patent/IT1274878B/en active IP Right Grant
-
1995
- 1995-08-01 DE DE69502890T patent/DE69502890T2/en not_active Expired - Lifetime
- 1995-08-01 JP JP7196639A patent/JPH0858738A/en active Pending
- 1995-08-01 EP EP95112079A patent/EP0696539B1/en not_active Expired - Lifetime
- 1995-08-03 CN CN95116336A patent/CN1055056C/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3380227A (en) * | 1964-02-20 | 1968-04-30 | Molins Organisation Ltd | Packing or wrapping machine of the mould wheel type |
FR2277732A1 (en) * | 1974-07-10 | 1976-02-06 | Gd Spa | WELDING DEVICE FOR CONTROLLING SHELLS OF THERMOPLASTIC MATERIAL, ESPECIALLY IN OVERPACKING MACHINES, FOR EXAMPLE OF CIGARETTE PACKAGES OR SIMILAR PRODUCTS |
DE3717621A1 (en) * | 1986-07-02 | 1988-01-14 | Nagema Veb K | METHOD FOR WARMING UP WRAPPING MATERIAL |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004011755A1 (en) * | 2004-03-09 | 2005-09-29 | Hauni Maschinenbau Ag | sealer |
DE102006021125A1 (en) * | 2006-05-04 | 2007-11-08 | Focke & Co.(Gmbh & Co. Kg) | Device and method for fixing a product in a receptacle, in particular when producing cigarette packs |
EP3578468A1 (en) | 2018-06-08 | 2019-12-11 | Theegarten-Pactec GmbH & Co. KG | Method and device for packaging small articles in thermoweldable packaging material with a heatable retaining element |
CN110182739A (en) * | 2019-05-28 | 2019-08-30 | 杭州集韵科技有限公司 | Packed beverage filling apparatus and its enclosuring structure |
Also Published As
Publication number | Publication date |
---|---|
EP0696539B1 (en) | 1998-06-10 |
IT1274878B (en) | 1997-07-25 |
DE69502890D1 (en) | 1998-07-16 |
CN1055056C (en) | 2000-08-02 |
ITBO940378A0 (en) | 1994-08-03 |
JPH0858738A (en) | 1996-03-05 |
DE69502890T2 (en) | 1998-12-10 |
CN1127211A (en) | 1996-07-24 |
ITBO940378A1 (en) | 1996-02-03 |
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