EP1527703B1 - Staggered drum - Google Patents

Abstract

The drum (10) contains a pocket (31, 32) for holding the filters which contains at least two suction holes (42.1, 42.) that can be connected to a vacuum source. The vacuum for one of these holes can not be switched off. The drum transports at least two adjacent rows of rod-shaped tobacco good components (especially filters) and includes a feed disc (21, 22) with pockets for each row of components.

Description

The invention relates to a staggering drum for conveying arranged in at least two rows of rod-shaped articles of the tobacco-processing industry, in particular filter elements, wherein for a number of articles in each case a conveyor disc is provided with recordings. Moreover, the invention relates to a machine of the tobacco processing industry, in particular filter manufacturing machine or filter attachment machine.

In the present context, articles of the tobacco-processing industry are understood to mean articles which are held in one or more parallel rows on conveyors, such as conveying drums in filter or cigarette making machines, and conveyed by them. Such articles are filter cigarettes as well as filter rods, filter segments, etc. If, in the following, for the sake of simplicity, only filters or filter elements are spoken of, then what has been said also applies correspondingly for other articles of the type mentioned above.

From the patent DE-C-1 272 795 is the removal of filter plug, ie rod-shaped articles, described from a magazine by means of a magazine drum. Here, filter rods are removed from the magazine and then cut into filter plugs. In order to deliver the coaxial and arranged in rows filter plugs staggered to a trough drum, an intermediate conveyor is arranged, wherein the intermediate conveyor for each row has a conveyor disc.

Further, in the patent DE-C-1 173 825 describes a staggering device for filter rods, in which two suction air openings are provided on a receptacle for a filter rod

In US-A-5 031 643 For example, there is described a smoothing surface conveying drum for tipping paper having rows of suction air passages for holding the tipping paper. To change the effective length of Saugluftkanalreihen a switchable and rotatable control means for the suction air is provided transversely to the conveying direction. The switching means can also be used with conveyor drums for corks or filter rods conveyed in troughs. The switching means consists of a rotatable cylindrical control tube whose circumference is provided with a plurality of longitudinal axial rows of bores which are arranged by turning the control tube about its axis in alignment with corresponding rows of suction air passages of the drum. The rotatable tubes form control means for the effective widths of the rows of suction air ducts.

Moreover, in EP-A-0 679 344 a staggering drum of a filter feed to a filter attachment machine described which consists of several annular discs with receptacles for the promotional and staggering filter plug consists. Further, the discs have suction holes, with a control sleeve provided inside the staggering drum to switch the negative pressure applied to the suction holes.

Based on this prior art, it is an object of the present invention to provide a staggering drum, in which a rapid adaptation to different lengths of filter plug is possible.

The object is achieved by a staggering drum for conveying arranged in at least two rows of rod-shaped articles of the tobacco industry, in particular filter elements, wherein for a series of articles in each case a conveyor disc is provided with recordings, which is further developed by a recording at least two Having suction holes acted upon by negative pressure and that the negative pressure at one of the at least two suction holes in the transport region of the rod-shaped article is not switched off, and wherein a shutdown device is provided such that by means of the shutdown device, the negative pressure at at least one suction hole can be switched off, and wherein the shutdown device slidably is arranged on the staggering drum.

The invention is based on the idea that differently long filter rods or elements are staggered in the recordings of the conveyor discs regardless of their length on the staggering drum. In this case, in particular the recordings or conveyor discs are formed in their width or length so that they absorb and stagger the maximum length of the rod to be handled. In particular, on this season drum only two rows of Artikein staggered, so that only a total of two conveyor discs are provided on the drum. According to the invention, it is proposed that the negative pressure at one of the at least two suction bores between the reception of the filter elements by a conveyor drum and the transfer to a further conveyor drum during transport on the staggering drum can not be switched off. As a result, vacuum is always applied to a suction bore of a receptacle in the conveying region of the filter elements.

Here, the negative pressure on at least one suction hole by means of a turn-off device can be switched off, so that according to the length of the articles to be staggered energy for generating negative pressure is saved and also the suction of dirt particles or the like is prevented

In order to quickly adjust the staggering drum to variously long rod-shaped articles for staggering, the stoppage device according to the invention is arranged displaceably on the staggering drum, so that adaptation to another length format of the articles to be conveyed and staggered is possible in a few steps.

In particular, the negative pressure at suction holes of at least two recordings can be switched off simultaneously.

In addition, it is advantageous if the negative pressure at a plurality of suction bores of a conveyor disc can be switched off at the same time.

Moreover, it is advantageous if the negative pressure at suction bores of the two conveyor disks can be switched off independently of one another so that staggered filter rods or rod-shaped articles are staggered on the conveyor disks.

In an advantageous embodiment of the invention, each conveyor disc on a shutdown device.

For this purpose, the shutdown device is annular and / or adjustable.

In particular, the turn-off device has shut-off elements for the suction bores, so that the negative pressure for a group of receptacles or for a respective receptacle on a conveyor disc is switched off accordingly.

Preferably, the shutdown elements are adjustable, so that with little effort an adjustment of the shutdown elements, e.g. on a ring, is possible.

Furthermore, the object is achieved by a machine of the tobacco-processing industry, in particular filter-making machine or filter attachment machine, which are equipped with a staggering drum according to the invention. Relay drums are mainly used in filter manufacturing machines, for example, to assemble multiple filter segments or to Filteransetzmaschinen. To avoid repetition, reference is expressly made to the above-described staggering drum according to the invention.

Fig. 1

einen Querschnitt durch eine erfindungsgemäße Staf- feltrommel und

Fig. 2

eine perspektivische Ansicht der Staffeltrommel (Fig. 1) im Ausschnitt.

The invention will be described below without limiting the general inventive concept by means of an embodiment with reference to the attached schematic drawings described by way of example, is expressly referred to in the rest with respect to the disclosure of all unspecified in the text details of the invention. Show it:

Fig. 1

a cross-section through a stag feltrommel invention and

Fig. 2

a perspective view of the staggering drum ( Fig. 1 ) in the clipping.

In the two figures, the same or similar elements or corresponding parts are designated by the same reference numerals, so that apart from a corresponding renewed idea.

In Fig. 1 the cross section of a staggering drum 10 is shown. The staggering drum 10 has a control flange 12 which is fixedly connected to the machine side. In addition, a rotating shaft 11 is provided which is rotatably mounted and connected to a drum body 13. On the drum body 13 two conveyor discs 21, 22 are arranged to stagger two rows of rod-shaped articles, eg filter rods.

Each conveyor disc 21, 22 has receptacles 31, 32 (FIG. Fig. 2 ), which are offset by a radial angle to each other. Each receptacle 31, 32 has a plurality of suction holes 42.1, 42.2, which are arranged side by side in the axial direction.

By way of example, a recording of a conveyor disc will be described in detail below, with the following applying in the same way to the other receivers of the other conveyor disc.

In Fig. 2 the receptacle 32 has a radially arranged suction bore 42.1 and a plurality of suction bores 42.2. The suction bore 42.1 is formed in the conveyor disc 22 such that upon application of a negative pressure to the staggering drum 10, negative pressure is always applied via the suction bore 42.1. The vacuum applied to the other suction bores 42. 2 can be switched off by means of a pin element 43. The pin element 43 and further pin elements are arranged on rings 51, 52 on the drum body 13. By a longitudinal axial displacement of the rings 51, 52 together with the pins 43 arranged thereon, it is possible to switch off or turn on the vacuum applied to the suction bores 42.2. As a result, corresponding to the article length thus conveying negative pressure to the suction bore 42.1 and according to the length also applied to further suction holes 42.2. According to the invention, it is provided that a vacuum is always applied to the suction bore 42.1. This vacuum can not be switched off. In addition, a vacuum can be switched on or off as needed at the suction holes 42.2. This depends on the filter rod length. The width of the receptacles 31, 32 is designed for the maximum handling lengths of a filter or a smoking article, which are processed on the machine. By means of the staggering drum 10 according to the invention, two rows of articles are longitudinally flexibly staggered.

Due to the displaceability of the rings 51, 52 together with the pins 43 can be made very quickly an adaptation to a new article length.

LIST OF REFERENCE NUMBERS

10

staggering drum

11

wave

12

control flange

13

drum body

21

feeder wheel

22

feeder wheel

31

admission

32

admission

42.1

suction bore

42.2

suction bore

43

pen

51

ring

52

ring

Claims (9)

1. Staggered drum (10) for conveying rod-shaped articles, arranged in at least two rows next to one another, in the tobacco-processing industry, in particular filter elements, wherein in each case a conveyor disk (21, 22) with seats (31, 32) is provided for a row of articles, characterised in that a seat (31, 32) has at least two suction holes (42.1, 42.2) to which negative pressure can be applied and that the negative pressure cannot be turned off on one of the at least two suction holes (42.1) in the transport area of the rod-shaped articles, wherein a turn-off device (43, 51, 52) is provided such that the negative pressure can be turned off on at least one suction hole (42.2) by means of the turn-off device (43, 51, 52), and wherein the turn-off device (43, 51, 52) is arranged in a displaceable manner on the staggered drum (10).
2. Staggered drum (10) according to claim 1, characterised in that the negative pressure on suction holes (42.1, 42.2) of at least two seats (31, 32) can be turned off at the same time.
3. Staggered drum (10) according to claim 1 or 2, characterised in that the negative pressure on several suction holes (42.2) of a conveyor disk (21, 22) can be turned off at the same time.
4. Staggered drum (10) according to one or more of claims 1 to 3, characterised in that the negative pressure on suction holes (42.2) of the two conveyor disks (21, 22) can be turned off independently of one another.
5. Staggered drum (10) according to one or more of claims 1 to 4, characterised in that each conveyor disk (21, 22) has a turn-off device (43, 51, 52).
6. Staggered drum (10) according to one or more of claims 1 to 5, characterised in that the turn-off device (43, 51, 52) is designed as annular and/or adjustable.
7. Staggered drum (10) according to one or more of claims 1 to 6, characterised in that the turn-off device (43, 51, 52) has turn-off elements (43) for the suction holes (42.2).
8. Staggered drum (10) according to claim 7, characterised in that the turn-off elements (43) are adjustable.
9. Machine in the tobacco-processing industry, in particular filter production machine or filter application machine, with a staggered drum (10) according to one or more of claims 1 to 8.

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