EP0814677B1 - Roller device - Google Patents

Description

The invention relates to a device for connecting axially aligned in rod-shaped groups Out of round tobacco articles with filter plugs or mouthpieces Cross section by wrapping glued connection sheets around the article groups with a rotatable around their axis Roll drum with axially parallel suction cups for holding of the article groups, one arranged on the circumference of the roller drum Rolling surface and one together with the rolling surface one Rolling channel forming stationary counter roll surface.

In the manufacture of filter cigarettes are common from two axially aligned tobacco rods and one Filter section of double use length formed article groups, by placing the filter section in a suitable gap between the tobacco rods and then the articles axially pushed together or aligned. These groups from not yet linked articles provided with a glued connection sheet, which over the area from the end of a tobacco rod bridged to the adjacent end of the other tobacco rod, and passed into the holding troughs of a rolling drum. With the connecting sheets, also called covering sheets Item group is in one between the as a rolling surface trained surface of the roller drum and a stationary Counter roll surface of a "roll hand" formed roll channel in which the article group between the Rolling surface of the rolling drum and the counter-rolling surface rolled and the glued connection sheet around the article group is wrapped around. The connection sheet connects the components of the article group for a filter cigarette twice the working length. Of course, in the appropriate In this way, filter cigarettes of simple working length are also produced if only one tobacco rod with one Filter section of simple usage length by means of a connecting sheet is connected. That kind, tobacco sticks with filter sections together to filter cigarettes connect, is common technology today and has become part of the The production of round cigarettes has proven itself billions of times. When producing filter cigarettes with a non-circular cross-section this technique fails because of the rigid rolling and counter-rolling surfaces do not allow rolling of out-of-round objects. Because it but a market for non-round, e.g. oval cigarettes exist also a need for a corresponding rational Manufacturing engineering.

It has therefore already been suggested instead of a rigid one stationary counter-rolling surface in such a rolling device a flexible, moving at a reduced speed To provide tape. The article groups out of round cross-section now roll between the surface of the roller drum and the flexible band, the band depending on the adapts current situation and the course of the article scope (EP 0 124 289 B1). So a wrap becomes less round Article groups with connection sheets possible by rolling; but this has the disadvantage that the pressure that the tape is on exercises the rolling article group, depending on their angular position is very different. That can affect the quality of the item affect.

The present invention has for its object a specify further device of the type described above.

This object is achieved according to the invention in that the rolling surface of the rolling drum and the counter-rolling surface have wave profiles adapted to the non-circular shape of the article groups rolling in the rolling channel. According to an advantageous development of the invention it is provided that the wave profiles of the rolling surface and the counter-rolling surface are designed such that the groups of articles roll in the rolling channel on the shaft surfaces and that their central axes move at least approximately on a circular path around the axis of the rolling drum. The central axis of the articles thus remains on the circular path during the rolling process, which it follows outside the rolling device.
This results in a very symmetrical roll, which ensures the best possible protection of the articles during the rolling process.

In order to enable multiple rewinding of the article groups, the invention further provides that the wave profile of the Counter roll surface in the conveying direction at least successively has two substantially identical profile sections.

A further development of the invention provides that the Roll channel on the input side is a stationary, essentially aligned parallel to the holding troughs of the roller drum and radially engaging in the movement path of the article groups Start bar is assigned, which is the rolling out of the Item groups from the holding troughs of the rolling drum and their Supports movement in the roll channel and supports them aligned axially parallel. This measure increases functional reliability the rolling device because it runs the risk of axial disorientation of the article groups at the entrance of the Roll channel reduced. This prevents malfunctions. Furthermore causes the start bar that the rolling process at the entrance of the Roll channel used reliably.

The invention provides a further device for manufacturing non-round, especially oval filter cigarettes are available posed. Their particular advantage is that the Roll article groups in the roll channel without their central axes their circular trajectory around the axis of the roller drum leave. This leads to an equalization of the load during the rolling process and thereby largely protects against Loss of quality in the manufactured cigarettes. The Movement of the central axes of the articles along the circular path, on which they are also moved outside the rolling channel an equalization of the movement of the articles in the Rollkanal result, which the best possible protection of the Article caused during the rolling process. The through the Invention offered possibility to duplicate the articles roll over, leads to a secure connection of the components the item.

The invention will now be explained in more detail with reference to the drawing.

Figur 1

eine Filteransetzmaschine mit einer Wickelvorrichtung nach der Erfindung in einer schematischen Vorderansicht,

Figur 2

eine Ansicht einer Wickelvorrichtung nach der Erfindung in einer vergrößerten schematischen Darstellung,

Figur 3

eine vergrößerte Darstellung der Einzelheit A der Figur 2 und

Figur 4

einen Querschnitt durch eine ovale Zigarette mit der Angabe der für die Beschreibung des Ausführungsbeispiels verwendeten geometrischen Größe.

Show it

Figure 1

a filter attachment machine with a winding device according to the invention in a schematic front view,

Figure 2

2 shows a view of a winding device according to the invention in an enlarged schematic illustration,

Figure 3

an enlarged view of the detail A of Figure 2 and

Figure 4

a cross section through an oval cigarette with the indication of the geometric size used for the description of the embodiment.

In Figure 1 is a filter attachment machine for producing Filter cigarettes shown schematically in a front view. A detailed description of such a machine and an illustration of the flow chart for manufacturing Filter cigarettes are in DE 40 08 475 A1 (corresponding US 5 135 008) included, here to supplement the Description is pointed out.

A take-over drum 2 takes over tobacco sticks 3 twice as long (Double cigarettes) from a not shown Cigarette rod machine, for example of the Protos type Applicant. The double cigarettes cross axially on one Cutting drum 4 and 6 by means of a circular knife two tobacco sticks of equal length (cigarettes) of simple use cut up. The tobacco sticks of simple working length are moved axially apart on a spreading drum 7 and then delivered to a compilation drum 8. From a Magazine 9 arrive in the drawing, not shown Filter rods in a known manner on a cutting drum 11, are doubled by two circular knives 12 to filter plugs Cut to length of use, on a relay drum 13 staggered, from a sliding drum 14 to a row aligned plugs and one Accelerator drum 16 in the spaces between the rows of cigarettes placed on the assembly drum 8. The so formed article groups (tobacco rod filter section tobacco rod groups) are pushed together axially and then taken over by a transfer drum 17.

A connecting material strip or covering paper strip 18 is pulled off a bobbin 19 in a perforating device 21 perforated, glued in a gluing device 22 and on a covering roller 23 from a knife drum 24 in successive Cut the topping or connecting sheets. A second bobbin 26 holds a second strip of fastener material 27 ready, the beginning of which by means of a splicing device 28 connected to the end of the running material web 18 as soon as the first bobbin 19 is used up. Instead of the perforating device 21 with which the current Tipping paper strips perforated can also be known One of the drums, for example the drum 32, one Means be assigned to the wrapping of the cigarettes perforated.

Those separated from the current connecting material strip 18 Pads are placed one after the other in the middle with successive ones Cigarette Stick Filter Section Cigarette Stick Groups brought together on the transfer drum 17 and on one Roll drum 29 by means of a rolling hand 31 around the article groups rolled around.

The double filter cigarettes thus produced are over a Intermediate drum 32 on which your wrapping alternatively to Perforation of the covering material with the device 21 also can be provided with ventilation openings, a cutting drum 33 fed and on this by means of a circular knife 34 assembled into single filter cigarettes. This are axially moved apart on a spreading drum 36 and on two test drums 37 and 38 by means of test devices 37a and 38a in two rows on compliance with specified Quality features such as tightness of the casing, degree of ventilation, Draw resistance and the like checked. Test facilities of this type are known and are not the subject of the present Invention and therefore need not be described here to become. The test facilities are not with one shown, common control arrangement connected.

The tested cigarettes are placed in two rows over an intermediate drum 41, of which 51 with a removal drum, especially defective cigarettes are removed can be transferred to a transfer drum 42, which is a Row of cigarettes via a further intermediate drum 43 to one Cone turner 44 or another reorientation device which gives the axial orientation of that in this row promoted cigarettes in accordance with the axial Orientation of the other row's cigarettes. Cone turner are for example from DE-OS 20 20 138 (≙ US 3rd 625 103). The reoriented cigarettes are made by the cone turner 46 is axially offset again to the intermediate drum 43 or an axially displaced corresponding drum and further transferred to a collecting drum 47. Between consecutive flipped cigarettes place another one Intermediate drum 48 taken over by transfer drum 42, second row unused cigarettes on the collecting drum 47 from. All cigarettes are now in the same axial Orientation in a row promoted to an offshoot belt 49, from which they are in a single single layer row a mass flow conveyor, not shown, or other cigarettes receiving device become.

Figures 2 and 3 show in enlarged representations Roll device 30 of the filter attachment machine 1 for wrapping the tobacco rod filter section tobacco rod groups 52 with glued covering paper sheets 53, one of which is shown in FIG is shown for illustration. The remaining papers are for the sake of simplicity and clarity not shown. The rolling device 30 consists of the rotating roller drum 29 and the stationary roller hand 31 with one of the peripheral surface of the roller drum 29 adjacent extending counter-rolling surface 54.

The roller drum 29 has a hollow cylindrical drum body 56 on that around a stationary control body 57 connected a vacuum source, not shown Control slots 58 revolves in its outer peripheral surface. Are on the outer periphery of the rotating drum body 56 axially parallel holding troughs 59 are arranged, to which with suction air openings 61 corresponding to control slots 58 In the angular ranges of the roller drum, a suction train can be created. The peripheral surface of the roller drum 29 is what will be described in more detail below, designed as a rolling surface 62, into which the flat-shaped holding troughs 59 are integrated are. The roller drum rotates in the direction of one Arrow 63.

The rolling hand 33 having the counter-rolling surface 54 is on a parallel lever drive 64 which cannot be described in detail attached, which they by means of a drive 66, for example a piston-cylinder unit, from the roller drum if required 29 swings away and in operation in their functional Holds position.

According to the invention, the rolling surface 62 of the rolling drum 29 and the counter-rolling surface 54 has a wave profile like that is shown in Figures 2 and 3. This results in between the surface of the roller drum 29 and the counter-rolling surface 54 a rolling channel 67, the width of which in the direction of movement 63 of the article groups varied. The rolling surface 62 the rolling drum 29 and the counter-rolling surface 54 are the non-circular shape of the article groups 52 rolling in the rolling channel 67 customized. The wave profiles are shaped so that the Article groups 52 when rolling in the rolling channel 67 on the moving Roll surface 62 of the rolling drum and the stationary counter-rolling surface 54 can roll, while the central axis M of the article groups on an arc 68 around the Axis 69 of the roller drum 29 moves. This training the Rolling surface 62 and the counter-rolling surface 54 thus causes the center of gravity of the article groups 52 on one can move continuous circular path through the rolling channel 67, while the non-circular article groups are rolled. At This rolling process wraps up the article groups beforehand attached to paper pads 53 around the joints of the axially suitably arranged components and connects these to double filter cigarettes 71.

To facilitate the start of the rolling process is at the beginning the counter-rolling surface 54 an axially parallel starting bar 72 arranged that the article groups from their holding troughs pushes out, aligns at the same time axially and the rolling process starts. At the same place ends in the stationary Control body 57 of the control slot 58, so that the Suction air effect in the relevant recess 59 is interrupted becomes. So an undisturbed and gentle roll is the Item groups possible.

The wave profile of the counter roll surface is repeated in Direction of conveyance in succession for a complete revolution the article group around its central axis M at least once. I.e. that the profile sections from Wellenberg too Wave crests 54a to g are essentially identical. Everyone this profile sections allowed from Wellenberg to Wellenberg a roll of the article group by 180 °. For a double Rewinding of the article groups 52 in the rolling channel 67 are on the counter-rolling surface successively four essentially identical profile sections provided that the area from Include wave crest 54a to wave crest e. For three times Roll over six such identical profile sections required, which in the example shown in FIG extend the wave crests 54a to g. After three times Roll over the topping paper 53 completely and safely wrapped around item group 52 and the item group is again in one of the flat holding troughs 59 of the roller drum 29, the suction air opening 61 via the control slot 58 is again pressurized to the double cigarette hold until delivery to the next sponsor.

The tables contain Cartesian as an exemplary embodiment Coordinate system the coordinates of the wave profiles a rolling surface section and a counter rolling surface section. They refer to a roll facility for an oval cigarette with a large diameter D = 10 mm, a small diameter d = 5.8 mm, a large radius R = 6.47 mm and a small radius r = 1.4 mm. The geometrical Relationships are enlarged in Figure 4 and are not to scale shown.

Table 1 contains the X and Y coordinates of a wavy one Rolling surface of a rolling drum in the in Figure 2 shown X-Y coordinate system, the origin of which in the Axis of rotation 69 of the roller drum 29 lies. The drawn Coordinate axes X and Y each give the positive Direction. The coordinates of in Table 1 given by X and Y represent the course of the rolling surface 62 of the rolling drum in that shown in Figure 2 in the coordinate system Angular range of 10 °. This course is repeated on Drum circumference 36 times in these 10 ° steps.

Table 2 contains the coordinates X and Y of the wave profile the counter-rolling surface 54, which is in two further 10 ° steps repeated twice on the counter-rolling surface. In order to the wave profile results for a three-time complete Rotation of the article groups in the roller channel 67. If you turn the coordinate system shown in Figure 2 in 10 ° increments clockwise, you have in the Tables 1 and 2 not only the coordinates X and Y of the complete counter roll surface, but also that of the complete Roll surface of the roller drum.

With the roll surface and counter roll surface profiles given in Tables 1 and 2, cigarettes of the dimensions given above can be rolled, their central axis M remaining on the circular movement path 68, on which they also move outside the roll channel 67. This enables a relatively gentle rewinding of the article groups with topping paper. Coordinates of the rolling surface X Y X Y X Y 130.3500 0.0000 131.9402 7.5377 131.3404 16.1515 130.3810 0.3480 131.8499 7.7586 131.3546 16.3644 130.4759 0.6919 131.7484 7.9844 131.3604 16.5736 130.6415 1.0273 131.6353 8.2159 131.3581 16.7800 130.8421 1.3504 131.5097 8.4538 131.3477 16.9839 131.0281 1.6602 131.3711 8,6987 131.3293 17.1860 131, 1996 1.9575 131.2189 8.9514 131.3029 17.3868 131.3566 2.2431 131.0524 9.2128 131.2683 17.5868 131.4998 2.5180 130.8710 9.4837 131.2256 17.7865 131.6294 2.7831 130.6743 9.7649 131.1745 17.9865 131.7461 3.0392 130.4620 10.0573 131.1146 18.1871 131.8504 3.2870 130.2340 10.3617 131.0458 18.3890 131.9430 3.5275 130.0398 10.6814 130.9677 18.5926 132.0244 3.7614 129.9153 11.0157 130.8797 18.7985 132.0951 3.9893 129.8541 11.3597 130.7813 19.0073 132.1557 4.2119 129.8546 11.7091 130.6721 19.2194 132.2066 4.4300 129.9192 12.0599 130.5514 19.4356 132.2483 4,6441 130.0549 12.4085 130.4184 19.6563 132.2810 4.8549 130.2267 12.7479 130.2726 19.8823 132.3050 5.0628 130.3850 13.0727 130.1133 20.1143 132.3207 5.2686 130.5298 13.3837 129.9396 20.3528 132.3281 5.4727 130.6614 13.6820 129.7509 20.5987 132.3274 5,6756 130.7800 13.9683 129.5466 20.8527 132.3185 5.8780 130.8861 14.2437 129.3262 21.1157 132.3016 6.0802 130.9800 14.5090 129.0892 21.3884 132.2764 6.2829 131.0623 14.7650 128.8355 21.6719 132.2429 6.4865 131.1336 15.0126 128.6142 21.9734 132,2008 6.6916 131.1943 15.2526 128.4610 22.2956 132.1498 6,8987 131.2449 15.4858 128.3701 22.6329 132.0897 7.1084 131.2859 15.7129 132.0200 7.3212 131.3176 15.9346 Coordinates of the counter roll surface X Y X Y X Y 139.9500 0.0000 137.9413 7.4930 137.1171 15.7541 139.9181 0.3479 138.0061 7.7227 137.0441 15.9596 139.8205 0.6911 138.0807 7.9588 136.9797 16.1630 139.6507 1.0243 138.1653 8.2021 136.9237 16.3647 139.4444 1.3439 138.2607 8.4536 136.8757 16.5654 139.2516 1.6495 138.3671 8.7141 136.8355 16.7656 139.0723 1.9420 138.4850 8.9846 136.8030 16.9660 138.9064 2.2227 138.6148 9.2660 136.7779 17.1669 138.7538 2.4924 138.7569 9.5594 136.7602 17.3691 138.6139 2.7522 138.9114 9.8658 136.7500 17.5731 138.4863 3.0030 139.0784 10.1863 136.7472 17.7794 138.3705 3.2458 139.2575 10.5218 136.7519 17.9887 138.2660 3.4813 139.3992 10.8680 136.7643 18,2016 138.1722 3.7105 139.4681 11.2180 136.7847 18.4188 138.0886 3.9340 139.4711 11.5674 136.8131 18.6409 138.0147 4.1526 139.4106 11.9115 136.8500 18.8687 137.9501 4.3670 139.2850 12.2454 136.8956 19.1029 137.8943 4,5778 139.0882 12.5635 136.9504 19.3444 137.8469 4.7858 138.8562 12.8649 137.0147 19.5939 137.8078 4.9915 138.6388 13.1535 137.0889 19.8524 137.7765 5.1955 138.4359 13.4302 137.1734 20.1209 137.7531 5.3983 138.2474 13.6962 137.2685 20.4002 137.7372 5,6006 138.0730 13.9524 137.3747 20.6914 137.7288 5.8030 137.9121 14.1997 137.4920 20.9955 137.7279 6.0059 137.7642 14.4392 137.6207 21.3136 137.7345 6.2101 137.6288 14.6715 137.7606 21.6467 137.7488 6.4159 137.5052 14.8976 137.9114 21.9960 137.7708 6.6241 137.3928 15.1182 138.0240 22.3526 137.8008 6.8353 137.2910 15.3340 138.0637 22.7072 137.8390 7.0500 137.1993 15.5458 138.0378 23.0556 137.8857 7.2690

Claims (4)

1. A device for connecting rod-shaped tobacco articles, which are grouped together such that they are axially flush, to filter plugs or tips of non-circular cross-section by winding round adhesive connecting leaves, said device having a rolling drum which may be rotated about its axis and has axially parallel suction hollows for holding the groups of articles the peripheral face of said rolling drum being constructed as a rolling face for rolling the groups of articles, and having a stationary counter rolling face which forms a rolling channel together with the rolling face of the rolling drum, characterized in that the rolling face (62) of the rolling drum (29) and the counter rolling face (54) have corrugated profiles which are adapted to the non-circular shape of the groups (52) of articles rolling in the rolling channel (67).
2. A device according to Claim 1, characterized in that the corrugated profiles of the rolling face (62) and the counter rolling face (54) are constructed such that the groups (52) of articles in the rolling channel (67) roll along the corrugation faces, and in that during this their centre axes (M) move at least approximately on a circular path (68) about the axis (69) of the rolling drum (29).
3. A device according to Claim 1 or 2, characterized in that the corrugated profile of the counter rolling face (54) has at least two substantially identical profile portions (54a to e) which succeed one another in the conveying direction (63).
4. A device according to one of Claims 1 to 3, characterized in that associated with the rolling channel (67) at the entry side there is a stationary start strip (72) which is aligned substantially parallel to the holding hollows (59) in the rolling drum (29), reaches radially into the movement path of the groups (52) of articles and helps the groups (52) of articles to roll out of the holding hollows in the rolling drum (29) and to move into the rolling channel (67), whilst aligning them such that they are axially parallel.

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