DE2711680A1 - FOLDING APPARATUS FOR A CIGARETTE PACKAGING MACHINE - Google Patents

Description

Folding device for a cigarette packing machine

The invention relates to a folding device for a cigarette packaging machine for wrapping the front flaps of a wrapping film to be packed in cigarette boxes with hinged closure caps Lots of cigarettes, with a wrapping wheel that runs through several stations and includes stationary and movable folding devices, which has a number of compartments corresponding to the number of stations for the lots of cigarettes to be wrapped, and with one Drive mechanism for incremental indexing of the wrapping wheel and for driving the folding devices, each on both sides of the wrapping wheel and associated with a station comprise folding knives which are mounted on a continuously rotating shaft of the drive mechanism arranged control discs from in an oscillating Swivel movement are offset.

Known cigarette packaging parts consist of a wrapping film enclosing the cigarette portion and / mü from an external from a Fs

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n: IBIP-1578 G. D. Societä ...

a thin cardboard box made of cigarettes with a hinged one Sealing cap. The rectangular piece of wrapping film is wrapped around the cigarette section so that the section is enclosed on all four long sides and then on the front sides by folding in the protruding edge sections of the wrapping film locked. First the narrow sides are folded in so that two tabs are created which run along the broad sides are then placed on top of each other.

To get the cigarettes from such a cigarette pack with hinged To be able to easily remove the cap, the cap is first lifted off and then a part of the thin wrapping film or the Inner wrap torn off. In order to facilitate this tearing off, a corresponding section of the wrapping film can be provided with a cut perforation be provided. The tearing then takes place in such a way that the folded flap lying at the front is gripped according to FIG. 1 and pulled away upwards will.

It is obvious that this tearing off the part intended for this purpose the wrapping film can be done particularly easily and quickly if the flap folded from front to back over the flap folded from back to front Tab lies. That is, it is desirable when packing the lot of cigarettes in the inner wrap to ensure that the When opening the cigarette pack, the flap to be pulled off is folded as the last flap and comes to rest on the top facing backwards.

A cigarette packaging machine, with which the cigarette lots in the cigarette packs described are packaged with hinged closure caps, is shown schematically in a partial view in FIG. Only the essential packaging elements are shown with which

the

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the cigarette batch built up in layers on the one hand and fed into a Wrapping wheel is entered. This wrapping wheel rotates around a horizontal axis and passes through several stations in which the individual wrapping processes take place. The batch of cigarettes wrapped in the wrapping film is then attached to another by a vertical one Axis rotating packaging wheel delivered by placing the wrapped cigarette lots with tax imprints or advertising imprints or Advertising images can be provided. This is followed by a third packaging wheel, which also rotates around a vertical axis, with the the outer packaging made of thin cardboard is attached.

The type of inner wrap is also used for the packaging of cigarette lots, if they are in a so-called soft pack (American type of packaging) is to be packed with the help of a fast-working cigarette packing machine. Such packaging machines are described in DT-OS 1 761 160, 2 361 545 and 2 425 known.

The cigarette packaging machine shown schematically in Fig. 2 has essentially the structure as it is used for the packaging of cigarette lots in soft packs and in those mentioned above Patent applications are described. This applies in particular to the production of the cigarette lots and the input of these lots with the aid a magazine rocker in the wrapping wheel for attaching the inner wrap. This wrapping wheel is incrementally rotated and has eight over compartments distributed over the circumference, each compartment coming to a standstill during one revolution of the wrapping wheel at one of the associated stations comes. In the feed station I, both the prepared piece of wrapping film and the batch of cigarettes are fed. The batch of cigarettes is stored in the compartment in such a way that the individual cigarettes with their

Longitudinal direction

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FLOOR DETECTOR _n " ₄ .. _nft Patent Attorney · / Ll] 1 DOU

IBIP-1578. £. G. D. Societa. . .

Longitudinal direction parallel to the axis of rotation of the wrapping wheel are. During the further transport through the individual stations, the wrapping film is placed around the cigarette section and on the front sides folded in. The protruding parts are first placed along the narrow side and then along the broad side of the cigarette section stamped in the order that the lagging tab during rotation is folded over first and the leading tab is placed over it will.

This is the easiest way to make the packaging process perform fastest. This is mainly the case because the leading flap is folded over when the wrapping wheel is transported further can take place from one station to the next station and thus no longer stay in the for folding the on the narrow side protruding parts and the station provided for a longitudinal flap is necessary.

From this you can see that during the delivery of the wrapped Cigarette section at the ejection station the flap folded from top to bottom over the flap folded from bottom to top on the front side of the inside fold comes to rest.

For this reason, there is no possibility of simply transferring the wrapping wheel of a cigarette packaging machine for soft packaging into such a cigarette packaging machine for packaging in cigarette boxes with a hinged closure cap, since the upper flap of the inner flap is located under the dex ^v closure cap of the cigarette box, running from the back to the front would come, ie in a direction opposite to Fig. 1, which is undesirable in the interest of easy opening and removal of the cigarettes. Due to this fact it would be necessary to have a wrapping wheel like it

for the

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FLEUCHAUS ft WEHSER ο Τ-ι -ι r ο η Patent »*« »/ / I I DbU SMK * UnMrZ ^ cMnIQ ₁ p. j 573

G. D. Societä ...

for attaching the wrapping film to soft-packaged cigarettes Is used to be able to use also for cigarette packaging machines in which the cigarettes are in boxes with hinged closure caps be packed. To create devices to the cigarette section provided with the inside wrap when filing on the next one Turn the packing wheel over.

The invention is based on the object. Measures to create a wrapping wheel, as it is used for attaching the inner wrapping to softly packaged cigarette lots, also for cigarette packaging machines to be able to use, in which the cigarette lots are packed in cigarette boxes with hinged closure caps will. It should be ensured with these devices that the sequence of folding the resulting on the front sides Longitudinal flaps is turned over so that the wrapped cigarette batch is delivered to the further packaging wheel in such a way that it is on top lying tabs in the ejection station of the wrapping wheel are folded from bottom to top.

This object is achieved according to the invention for the folding apparatus mentioned at the beginning solved in that the arranged in front of the indexing mechanism for the wrapping wheel on the continuously rotating shaft Control disk to drive the one. A shaft carrying a pair of folding knives is provided with a pick-up element rotatable about a stationary pin is that the pick-off element is provided with a tap cooperating with the control disc and with a toothed segment edge, which is provided with a toothed counterpart on a shaft to drive the folding knife is engaged in such a way that a first pivoting movement occurs in the opposite direction to the direction of rotation of the wrapping wheel and then a standstill phase takes place, a second pivoting movement in the direction of rotation of the E in winding wheel and then another swivel movement in the opposite direction to the rotary

direction

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direction of the wrapping wheel follows, and that a final pivoting movement the folding knife is moved back to the starting position in each swivel cycle.

Another embodiment of the invention is the subject of others Claims.

The invention with its features and advantages is also based on an embodiment in connection with a Drawing described. Show it:

Fig. 1 is a perspective view of a cigarette packet with

hinged cap, some parts are shown in section for better understanding;

Fig. 2 is a schematic perspective view of a cigarette -

packing machine for cigarette boxes with hinged cap;

Fig. 3 is a perspective view of the drive device for the

Cigarette packaging machine according to FIG. 2 and for controlling the folding device according to the invention;

FIG. 4 is a perspective view of the wrapping wheel of FIG

Cigarette packaging machine and folder according to the invention;

Fig. 5 is a flow chart for some important parts of the packaging machine and the folder according to the invention.

The drive according to FIG. 3 for the cigarette packaging machine according to FIG. 2 is carried out by an electric motor 1, which via a shaft 2 and

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a transmission 3 drives a drive pulley 4. This drive pulley 4 is arranged on a shaft 5 which carries a gear 6 at the other end.

This gear 6 is via a reversing disk 7 with a gear 8 in engagement, which is fastened to a shaft 9 which runs parallel to the shaft 5. On the shaft 9 there are grooved control disks 10 and 11 attached, the function of which will be explained later. At the left-hand end of the shaft 9, the driver 12 is also one Gearbox from an eight-part Maltese cross 13 attached, in the slots of which engages the driving stick of the driver.

The Maltese cross 13 is connected to a tubular shaft 14 on which the other end outside of the machine bed, not shown, the wrapping wheel 15 shown in detail in FIG. 4 is attached, with which the cigarette sections, which are layered in several layers, are wrapped in thin foils.

This wrapping wheel 15, which the cigarette lots over one with two Magazines provided rocker 16 according to FIG. 2 are supplied and which in turn the wrapped parts one by one vertical axis rotatable wheel 17 feeds, rotates gradually clockwise by angular ranges of 45 and has eight Compartments 18 distributed over the circumference, which are also arranged at an angle of 45 to one another.

The wrapping wheel 15 consists essentially of two coaxially on the Tubular shaft 14 fastened disks 19 and 2o, which are arranged at a distance corresponding to the cigarette length from one another and from one another are connected by pins 21 parallel to the axis of rotation.

The compartments 18

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DG Societä. . "/ IP- The compartments 18, which are formed by slots cut radially into the disks, are shaped in such a way that they can accommodate rectangular bodies with parallel surfaces, the dimensions of which correspond to those of the cigarette sections in the longitudinal and transverse directions, the longitudinal direction being parallel to the axis of rotation The opening of the compartments 18 lies on the cylindrical outside of the wrapping wheel, the compartments being open on the side of the wrapping wheel.

The wrapping wheel 15 is seen from the right in the illustration 4 along a vertical plane in a conventional manner rectangular pieces 22 of a thin wrapping film for the so-called Inner wrap supplied, which is provided with a tear-off perforation at one corner, which is made with the help of a device as in the DT-OS 2 511 341 is described, can be attached.

To make the following description easier to understand, the piece 22 of the wrapping film is divided by theoretical fold lines shown in dash-dotted lines, so that surface areas arise that are assigned to the individual surfaces of a wrapped batch of cigarettes and represent a surface delimitation for these surfaces. In FIG. 4, the individual areas are identified with the reference numerals 24, 25, 26, 27 and 28, whereas the same areas are provided with an apostrophe Reference symbols are the surface parts required for the frontal impact. Correspondingly, two identical reference symbols are used in each case provided with such an apostrophe. All compartments 18 are swiveled one after the other into the feed station I and linger for a short time in this position. As explained in the patent applications described at the beginning, the layered cigarette batch is through a shift directed transversely to the longitudinal axis together with the

Wrapping

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FUEUCHAUS ft WEHSER O T 1 1 C ο η Patent Attorney · II Π DOU

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Wrapping film moved into a compartment that has come to a standstill at feed station I. This is done with the aid of a slide 29 and one Counter slide 30, which are both attached to a horizontally lying shaft and a reciprocating movement radially to Run wrapping wheel 15.

During the forward movement, the counter slide 30 approaches the piece 2 2 of the wrapping film, which is located at the infeed station I, whereby the surface area 26 of the film is applied to the left side of the cigarette portion.

While the cigarette batch is being pushed into the compartment 18 the two adjacent sheet pieces 25 and 27 are folded onto the top and bottom layers of the cigarette lot and, once the whole Cigarette batch is pushed into the compartment, the counter slide 30 begins to separate from the surface part 26, while at the same time the slide 29 is also moved back.

By engaging right-angled plates 31 and 32, which move synchronously inwards and place against the outer long side of the cigarette section, the cigarettes are held in the compartment 18, while the wrapping wheel continues to turn.

These right-angled plates 31 and 32 extend from the outer ends of two arms 33 and 34, which are in the same radial plane perform a reciprocating motion about pivot points on disks 20 and 19.

Associated with each compartment 18 are two arms 33 and 34 which are symmetrical with respect to the associated cross-sectional plane of the wrapping wheel 15

arranged

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FLEUCHAUS & WEHSER Patent attorneys

IB-IP-1578 G.D. Societa. . . are arranged.

At the pivot point of the arms 33 and 34, a free-running roller 35 is provided, which is in engagement with a cam guide which is not shown but is described in DT-OS 2,425,969. With the help of Cam guide, the oscillating movement is initiated via the rollers 35, which causes the plates 31 and 32 to pivot in and out in the area of the compartments 18. After swiveling in the plates and 32 and while the associated compartment 18 is still in the feed station I, the side surfaces 26 'move in and against the end surface the cigarette section folded.

The wrapping wheel 15 is then rotated clockwise until the associated Compartment 18 passes from feed station I into station II, which is offset by 45 with respect to the feed station.

While staying in station II, the upper one protrudes Edge 24 of the wrapping film is folded down with the aid of a horseshoe-shaped folding iron 36. This is done by a tangential swivel movement of the folding iron along the cylindrical outer surface of the wrapping wheel 15, with which the protruding edge of the wrapping film over the outside of the cigarette lot is placed.

Then a further rotation of the wrapping wheel results in a shift the batch of cigarettes into station III, which is offset by 90 in relation to feed station I. During this rotation of the wrapping wheel and before the folded-over edge strip 24 is released from the folding iron 36, a stationary stop 37, which is concentric to the wrapping wheel is arranged along its end face, the edge strip 28 over the edge strip 24.

While

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During these phases are used, the rectangular plates 31 and 32 as counter elements for the Falteisen 36 and the stationary stop In this way it is avoided a damage of the cigarette, and arranged that upon folding edge along the fold lines between the surface parts 25 and 27 of the wrapping film and the Edge strips 24 and 28 arise.

During the displacement of the applied with the cigarette batch compartment 18 of the station II causes the cam guide in the station III, that the arms 33 and 34 pivot outwardly, and hence the plates 31 and 32 under the folded edge strips 24 and 28 pulled.

The batch of cigarettes now partially wrapped in the piece 22 of the wrapping film is held in the compartment by the stationary stop 37 guided along the outside of the wrapping wheel. The compartment 18 under consideration is then moved into station IV, in which the stationary stop 37 has an interruption in which a block 38 is arranged which can perform an oscillating movement.

This block 38 is first placed against the superimposed edge strips 24 and 28 to maintain the overlap. The two lateral sections 24 'and 28' of the edge strips are then folded inwards over the end faces of the cigarette lot. This is carried out with the aid of further folding irons 39 that go back and forth.

At the end of this folding process and while the compartment is in the same position remains, the side tabs 27 * that over the side surfaces of the wrapping wheel protrude along the leading edge of each cigarette section folded over, d. H. in a direction opposite to the direction of rotation

of one

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UnMr characters:

DG Societä. . . * ΑΙΦ

of the wrapping wheel.

The flaps 27 ′ are folded over with the aid of folding knives 40 and 41, which perform a reciprocating movement and, during the forward movement, the tabs 27 'over the end face of the cigarette section knock down.

The two folding knives 40 and 41 are mounted on a shaft 42 which runs parallel to the shaft 9 and carries a toothed sector element 43 at its other end. This toothed sector element engages in a toothed corner edge of a triangular plate 44 which is rotatably mounted about a pin 45 in the area of another corner edge. In the area an idle guide roller 46 is attached to the third corner edge of the triangular plate 44 and engages in a cam groove on the control disk 10.

The cam groove of the control disk 10 is shaped such that at the end the leading oscillating movement the folding knives 40 and 41 in one Remain rest position until the other Laschpn 25 'of the wrapping film with the help of the folding knife 47 and 48 in the sense of the direction of rotation of the Wrapping wheel are also folded against the face of the cigarette section. The folding knives 47 and 48 pivot over the Folding knives 40 and 41, which act as a counter-element and for sharp-edged folding like the plates 31 and 32 when turning over the edge strips are jointly responsible.

The folding knives 47 and 48 are arranged on a shaft 49, which also a gear 50 carries at one end. This gear 50 engages in a toothed sector element 52, which via a lever 51 with the shaft 52 is connected, which in turn again via a lever 53 and a

Idler roller

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Idle roller with the cam groove of the control disk 11 in engagement stands.

During the return movement of the folding knives 40 and 41, these release the tabs 25 'so that they are now on the tabs below 27 'come to circulation.

During the return movement of the folding knives 47 and 48, namely before they release the end faces of the wrapped cigarette section, the folding knives 40 and 41 are swiveled in again so that they come to rest over the tabs 25 '.

The continuous presence of Hai te elements that are close together the end faces of the wrapped cigarette section rest, the task is fulfilled to avoid that in one direction against the direction of rotation of the wrapping wheel 15 folded tabs 25 'on the Folding knives 40 and 41 or can get stuck on the guides described below.

As soon as the block 38 is moved back and the two edge strips 24 and 28 releases, d. H. after completing his task, the wrapped one To hold the batch of cigarettes in the compartment 18, the wrapping wheel 15 is rotated further until the associated compartment 18 is in the ejection station V arrives.

The holding of the tabs 25 'and 27' on the respective end faces Ends of the wrapped batch of cigarettes, to be precise during the starting phase of the further rotation of the wrapping wheel, is carried out with the aid of the folding knife 40 and 41, with the rotation of the wrapping wheel causing them to pivot back. Close in the swiveled-back position guides 54 on these folding knives on both sides of the wrapping wheel

and 55 on

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and 55, of which only the guide 54 is shown in FIG. 4, below which the folded flaps 25 'and 27' are still held in their intended position.

In the ejection station V, which is diametrically opposite the feed station I, the ejection of the wrapped batch of cigarettes takes place with the aid of a slide 56 which moves back and forth with respect to the wrapping wheel 15 Movement. The slide 56 rests on the inner longitudinal edge of the wrapped cigarette lot, while on the outer longitudinal edge a counter slide 57 comes to rest. The co-operation of these two slides creates the wrapped cigarette batch moved in the vertical direction out of the compartment 18 of the wrapping wheel and onto a tray 58. This shelf 58 is back in the vertical direction and can be pushed out and, when the cigarette batch is ejected, assumes such a position that the batch can be moved by a simple horizontal displacement can be filed. The tray 58 cooperates with a counterpart 59 which rests on the wrapped cigarette batch from above. The tray and the counterpart are then moved down to the wrapped cigarette batch in one of the compartments 60 of the vertical axis of rotatable wheel 17 to store.

The sequence of movements for the wrapping wheel is shown schematically in FIG the shaft 42 connected to the folding knives 40 and 41 and the shaft 49 connected to the folding knives 47 and 48 depending on the rotation shaft 9 emerges.

The representation shows the dependency of the movement sequence of the folding knife to recognize depending on the service life and the movement time of the wrapping wheel. The dashed line indicates the wrapping wheel 15 Part of the time of movement and the rest of the horizontal part the curve is the service life. For shafts 42 and 49, the horlzon-

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Sections of the curves running in the valley also represent the idle times, whereas the rising curve sections represent the time during which a swiveling in takes place and the downwardly running curve sections the time during which a swiveling back takes place «. From the assignment of the curves of the forward-standing movement described is also removable.

Claims

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Claims (3)

Claims 1. \ Folding device for a cigarette packaging machine for wrapping the front flaps of a wrapping film for cigarette lots to be packed in cigarette boxes with hinged closure caps, with a wrapping wheel running through several stations and comprising stationary and displaceable folding devices, the one the number of stations corresponding number of compartments for the cigarette lots to be wrapped, and with a drive mechanism for incremental advancement of the wrapping wheel and for Drive of the folding devices, which are each arranged on both sides of the wrapping wheel and assigned to a station include, which are arranged on a continuously rotating shaft of the drive mechanism control disks from in a oscillating pivoting movement are offset, characterized geken nzeich that the arranged in front of the indexing mechanism (12, 13) for the wrapping wheel (15) on the continuously rotating shaft Control disc (10) for driving the shaft (42) carrying a pair of folding knives (40, 41) is provided with a pick-up element (44) rotatable about a stationary pin, that the pick-up element (44) with a the control disc (10) cooperating tap (46) and is provided with a toothed segment edge, which is provided with a toothed counter 709838/0942 ORlGiNAL INSPECTED -2 - IBIP-1578 G. D. Societä. . piece (43) on the shaft (42) to drive the folding knives (40, 41) is engaged in such a way that a first pivoting movement in the opposite direction to the direction of rotation of the wrapping wheel (15) and then a Standstill phase takes place, followed by a second pivoting movement in the direction of rotation of the wrapping wheel and then another pivoting movement in the opposite direction to the direction of rotation of the wrapping wheel, and that a last pivoting movement in each pivoting cycle, the folding knife (40, 41) moved back to the starting position. 2. Folding apparatus according to claim 1, characterized in that the an oscillating pivoting movement executing tap element (44) is a triangular plate in which the one corner area is the toothed Segment edge, the other corner area of the stationary pin (45) as The pivot axis and the third corner area of the tap (46) is assigned. 3. Folding apparatus according to claim 2, characterized in that the toothed segment edge is a toothed circular arc section. 709838/0942