EP1700528B1 - Pusher/cutter drum - Google Patents

Abstract

The drum has a receiver for a rod shaped articles of a tobacco processing industry and a movable unit for longitutinal axial movement of the article in the receiver in combination with a cutting device arranged at the conveying drum for cutting the articles. The movable unit is designed as mechanical operatable and movable sliders (25). The sliders are arranged mutually and alternatively in the cross axial direction of the receivers. An independent claim is also included for a machine of the tobacco processing industry such as filter manufacturing machine or filter attaching machine with the conveying drum.

Description

The invention relates to a conveyor drum of the tobacco-processing industry with receptacles for rod-shaped articles of the tobacco processing industry and laterally arranged on the record displacement means for longitudinal axial displacement of the rod-shaped article in the recordings in combination with a arranged on the conveyor drum cutting device for cutting the rod-shaped article.

Conveyor drums of the type mentioned are also referred to as sliding / cutting drums, which consist of a combination of a transport drum and at least one cutting device or a cutting blade for the transported article. These drums are usually used in the course of the assembly of filter rods and filter cigarettes, wherein filter rod components multiple use length in a so-called transverse process, ie transverse to their longitudinal axes through single or multiple subdivision, staggering and sequential series for their subsequent connection with other filter components or smoking article components are prepared. For this purpose, a large number of conveyor drums for carrying out the processing steps is necessary. In the course of this processing and handling steps, in particular a defined longitudinal axial positioning or mutual alignment of the filter rod components in their receiving troughs required for a separating cut on successive filter rod components is of importance for the number of tumors determining the length of the conveying path.

In EP-A-1 013 181 discloses a sliding / cutting drum, wherein the smoking article components or filter pieces are moved in the receiving troughs by applying suction air to suction holes of the recordings against longitudinally displaceable stops in a pneumatic manner.

Furthermore, in DE-A-42 42 326 a device for forming double-filter cigarette described, wherein a series of double-cigarette sections are each received in seats and held by means of negative pressure therein. After recording, the double-cigarette sections are each cut transversely into two individual cigarette lengths by means of a knife. The single cigarettes are detected by appropriately arranged on the seats gripper heads and pulled apart in the axial direction. For this purpose, the gripper heads have pneumatically operated holding devices

It is also in US-A-2004/255963 describes an apparatus for producing filter cigarettes, wherein the sub-sticks are moved apart longitudinally with the formation of sub-sticks. For this purpose, the partial blocks are arranged on sliding segments, the longitudinal axial be moved together with the sub-sections arranged thereon. Spacer bolts are arranged on the sides of the sliding segments, wherein spacer bolts enter the segment wells due to the movement of the sliding segments to the outside. The spacer bolts are themselves firmly attached to the drum, with a change in format, a change in the relative position between the spacer bolts.

In DE-A-1 173 825 In addition, a drum is disclosed on which a cutting blade is arranged. The drum has a central part, which is provided with trough-like shots. On both sides of the Mitteilteil forks are provided, which are aligned during the transfer of filter rods of multiple use length from a magazine with the receptacles of the central part of the drum.

Starting from this prior art, it is an object of the present invention to provide a sliding / cutting drum, so that even very short rod-shaped articles, i. in particular those whose length is shorter than their diameter, or hollow rod-shaped articles of the tobacco-processing industry can be reliably transported and assembled.

This object is achieved by a conveyor drum of the tobacco-processing industry with recordings for rod-shaped articles of the tobacco industry and laterally arranged on the record displacement means for longitudinal axial displacement of the rod-shaped article in the recordings in combination with a arranged on the conveyor drum cutting device for cutting the rod-shaped Article, which is developed by the fact that the displacement means are designed as mechanically operated and movable slide, wherein the slides are longitudinally displaceable with respect to the receptacles.

A conveyor drum according to the invention is used in particular in the assembly of filter rod components, which are removed from a magazine in multiple use length and cut. In order to cut through the cut filter rod components again, it is necessary to convert them into a transverse axial row formation. For this purpose, a longitudinal axial displacement of staggered successive articles is carried out in a transverse axial row cutting formation, wherein the rod-shaped articles are aligned according to the invention by means of mechanically actuated and movable slide. This makes it possible, for example, even small pieces of filter or hollow filter pieces in the receiving wells safely to move longitudinally axially or align and then cut on the conveyor drum.

The handling of small or very short filter pieces or rod-shaped articles, ie in particular of those whose length is shorter than their diameter, or hollow filter pieces is in conveyor drums or sliding / cutting drum, in which the articles are moved longitudinally axially in a pneumatic manner, difficult or possibly impossible, since short filter pieces tend to tip over. An additional disadvantage of the pneumatic displacement is the very deep formation of the receiving wells. The deeper a trough is, the more complicated is the transfer of the rod-shaped article to a subsequent drum. In contrast, when using the mechanical slider according to the invention, a receiving trough on the conveyor drum may be made flatter to ensure a safe transfer to the subsequent drum. In addition, a lot of suction air is saved by the mechanical slide, because the articles are no longer pneumatically but mechanically moved and therefore less suction holes on the transport drum are required. The existing suction holes have primarily the function to keep the promoted items in the troughs.

Furthermore, the slides are longitudinally displaceable with respect to the receptacles so that the slides accurately align and position the received rod-shaped articles with respect to the cutting plane of the cutting device. For cutting the aligned articles, one or more cutting blades are provided on the conveyor drum as a cutting device.

In particular, the slides are alternately arranged alternately in the transverse axial direction of the receptacles, so that the slides are aligned alternately with respect to the cutting plane with respect to the plane of the cutting blade or the cutting device.

A simplification of the movements is achieved when several slides are simultaneously movable with each other. For this purpose, a plurality of slides are arranged, for example, on a holder, so that the slides reliably align the articles by movement of the holder with respect to the cutting plane.

For this purpose, it is provided that the slides execute a predetermined longitudinal axial stroke.

Furthermore, it is preferable if the receptacles each have a different number of suction bores that can be acted upon with negative pressure on both sides of the cutting plane with respect to the cutting plane of the cutting device. As a result, a small and sufficient number of suction holes are applied in an efficient manner in the receiving wells with negative pressure,
ensure a secure recording and longitudinal axial guidance of subsidized or cut articles.

In particular, the conveyor drum is formed in combination with the cutting device as a so-called sliding / cutting drum.

Furthermore, the object is achieved by a machine of the tobacco-processing industry, in particular filter-making machine or filter attachment machine, which is equipped with a conveying drum according to the invention described above. To avoid repetition, reference is expressly made to the above statements.

Fig. 1

eine ausschnittsweise Ansicht einer Schiebe-/Schneidtrommel und

Fig. 2

eine perspektivische Ansicht der erfindungsgemäßen Schiebe-/Schneidtrommel im Ausschnitt.

The invention will be described below by way of example without limiting the general inventive concept with reference to the drawings, to which reference is expressly made, moreover, with regard to the disclosure of all details of the invention which are not explained in greater detail in the text. Show it:

Fig. 1

a fragmentary view of a sliding / cutting drum and

Fig. 2

a perspective view of the sliding / cutting drum according to the invention in the neck.

In the following figures, identical or similar elements or corresponding parts are provided with the same reference numerals, so that a corresponding renewed idea is dispensed with.

Fig. 1 shows in the section an arrangement of conveyor drums, the drum in the invention, a sliding / cutting drum 10, which consists of a transport drum 20 and a cutting blade 30 arranged thereon.

From a conveyor drum 50 rod-shaped articles are transferred to the sliding / cutting drum 10. After transfer, the rod-shaped articles on the sliding / cutting drum 10 are displaced longitudinally axially during their conveyance to the cutting blade 30 and aligned and positioned with respect to the cutting plane of the cutting blade 30. After cutting the transported articles by means of the cutting blade 30, the articles are transferred from the transport drum 20 to a subsequent conveyor drum 60.

Following the removal of the cut articles from the transport drum 20, the slides (see Fig. 2 , Reference numeral 25) on the transport drum 20 with continuous rotation of the drum in a working or start position to receive at the transfer point of the article from the conveyor drum 50 to the sliding / cutting drum 10, the articles in the receiving troughs and then move longitudinally axially.

In Fig. 2 the transport drum 20 is shown in a perspective view. For the sake of better representability was in Fig. 2 from the marking of the provided on the transport drum 20 cutting blade 30 (see. Fig. 1 ) aside.

The rotatably driven transport drum 20 has receptacles 21, 22. The receptacles 21, 22 have flat or low side walls 23, so that even small or very short rod-shaped or hollow articles are safely transported in the receptacles 21, 22. Furthermore, the receptacles 21, 22 have suction holes 24 in the trough bottom, the negative pressure from the inside of the drum body 20 are applied to safely receive the conveyed articles in the receiving trough.

A slide 25 is arranged laterally on each receptacle 21, 22, with two slides 25 each being held on a holder 26 or 27 on each side. The slides 25 are alternately arranged alternately at the opposite ends of the receptacles 21, 22, so that in each case two slides 25 of the receptacle 21 on a holder 27 and two slides 25 of the receptacle 22 are fastened to a holder 26.

Each holder 26, 27 or each slide 25 is longitudinally displaceable with respect to the receptacles 21, 22 in order to move the recorded articles with respect to the cutting plane of the cutting device or the cutting blade (see. Fig. 1 , Reference numeral 30).

The cutting plane of the cutting blade 30 (see. Fig. 1 ) results from the groove-shaped separation of the receptacles 21, 22 in the transverse axial direction, in which the cutting blade 30 protrudes. The cutting plane or the groove-shaped recess of the receptacles 21, 22 is in Fig. 2 designated by the reference numeral 31.

In addition, in Fig. 2 recognizable that the receptacles 21, 22 with respect to the cutting plane 31 have a different number of suction holes on the two sides of the cutting plane 31. On the side on which a slider 25 is arranged, more suction holes are provided, as on the side facing away from the slider 25 of the receptacle 21, 22nd

According to the invention, the slides together with the holders 26, 27 are longitudinally movable or displaceable to the recorded Align articles with respect to the cutting plane 31 or the cutting blade. In order to move the brackets 26, 27 and the slider 25, 20 corresponding control cams for executing a predetermined longitudinal axial stroke are provided inside the drum body. For example, a longitudinal axial stroke by means of a corresponding control body for the movable brackets 26, 27 and slider 25 is executed.

The sliding / cutting drum 10 according to the invention is used in machines of the tobacco-processing industry, in particular filter production machines or filter attachment machines, preferably in the filter operation of the machines.

LIST OF REFERENCE NUMBERS

10

Sliding / cutting drum

20

transport drum

21

admission

22

admission

23

Side wall

24

suction bore

25

pusher

26

bracket

27

bracket

30

cutting blade

31

cutting plane

50

conveyor drum

60

conveyor drum

Claims (7)

1. Conveyor drum (20) in the tobacco-processing industry with seats (21, 22) for rod-shaped articles in the tobacco-processing industry and with displacement means (25, 26) arranged laterally on the seats (21, 22) for the longitudinal-axial displacement of the rod-shaped articles in the seats (21, 22) in combination with a cutting device (30) arranged on the conveyor drum (20) for cutting the rod-shaped articles, characterised in that the displacement means (25, 26) are designed as mechanically actuatable and moveable sliders (25), wherein the sliders (25) are longitudinally displaceable with regard to the seats (21, 22).
2. Conveyor drum (20) according to claim 1, characterised in that the sliders (25) are arranged reciprocally alternating in the transverse-axial direction of the seats (21, 22).
3. Conveyor drum (20) according to claim 1 or 2, characterised in that several sliders (25) are moveable with one another at the same time.
4. Conveyor drum (20) according to one of claims 1 to 3, characterised in that the sliders (25) perform a pre-determined longitudinal-axial stroke.
5. Conveyor drum (20) according to one or more of claims 1 to 4, characterised in that the seats (21, 22) have in each case with regard to the cutting plane (31) of the cutting device (30), on both sides of the cutting plane (31), a different number of suction holes (24) that can be pressurised with negative pressure.
6. Conveyor drum (20) according to one or more of claims 1 to 5, characterised in that the conveyor drum (20) is designed with the cutting device (30) as a sliding/cutting drum (10).
7. Machine in the tobacco-processing industry, in particular filter production machine or filter application machine, with a conveyor drum (20) according to one or more of claims 1 to 6.

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