EP2005848B1 - Receiving device and transport method - Google Patents

Abstract

The device (15) has a deceleration device arranged in downstream from a deceleration device for decelerating rod-like articles. A conveyor speed limit device (10) is located between the deceleration device and the acceleration device, where the rod-like articles comprise filter rods, and the deceleration device comprises a brake device. A subsequent filter rod (6'') is arranged in a brake roller pair (3, 3'), which pushes the filter rod along brake roller pair speed conveyor direction (17). An independent claim is also included for a method for conveying rod-like articles for a tobacco- processing industry.

Description

The invention relates to a receiving device of a conveyor for the transport of air-assisted rod-shaped filter rods of the tobacco processing industry, wherein the receiving device comprises a rod-shaped article decelerating device (first braking device) and a rod-shaped article accelerating device (accelerator), wherein the accelerating device downstream the first braking device is arranged, wherein between the first braking device and the accelerating device, a conveying speed limiting device is provided.

The invention further relates to a method for conveying rod-shaped filter rods conveyed by compressed air of the tobacco-processing industry, wherein the filter rods are conveyed longitudinally axially into a first braking device and then braked in the first braking device to a first predetermined speed be, wherein the speed of the filter rods is limited in a to the first braking device, in particular immediately subsequent conveyor section to a second predetermined speed.

A corresponding receiving device and a corresponding conveying method are for example off EP-699,396 and EP 1 397 968 B1 known. A corresponding filter rod receiver or a corresponding receiving device for rod-shaped articles of the tobacco processing industry usually receives longitudinally axially articles, which are first decelerated, to then be accelerated longitudinally axially. Subsequently, the articles are fed transaxially to a filter magazine. Here, various module variants are known. There are, for example, individual receiver, double receiver and triple receiver. It is also possible to regulate the speed of the filter rod receiver or a receiving device, depending on the need for articles.

DE 26 41 934 A1 relates to a device for receiving axially moving rod-shaped objects. It has means which slow the axial movement of the successive rod-shaped objects and carry them away in a stream consisting of a stack of these objects and moving transversely to their longitudinal direction.

There are two pairs of rollers provided in a receiving station, of which an upstream pair of rollers slows down the conveyed articles, while a downstream pair of rollers accelerates the articles again. The first pair of rollers may be connected downstream of a braking device.

In DE 29 26 792 A1 is a receiving station of a pneumatic Conveyor for the transport of rod-shaped articles of the tobacco processing industry in the longitudinal axial direction disclosed. This leads to a deflection device, in which articles are deflected from a longitudinal axial direction into a transverse axial direction. The receiving station has two pairs of rollers, which initially decelerate the cross-axially promoted articles and then accelerate controlled again.

It is an object of the present invention to increase the reliability of a receiving device of a conveyor for the transport of rod-shaped articles of the tobacco processing industry and in a method for conveying rod-shaped articles of the tobacco processing industry.

This object is achieved by a receiving device of a conveyor for the transport of compressed air-fed rod-shaped filter rods of the tobacco processing industry, wherein the receiving device comprises a filter rod braking device (first braking device) and a filter rod accelerating device (accelerator), wherein the accelerator device downstream the first braking device is arranged, wherein between the first braking device and the accelerating device, a conveying speed limiting device is provided, which is further characterized in that the conveying speed limiting device is designed as a mechanical second braking device, wherein the second braking device comprises resiliently against a filter rod pressing elements.

The receiving device according to the invention has the function of the longitudinal transport of rod-shaped articles of the tobacco-processing industry in undefined states of a pipeline or conveyor in the receiving device incoming filter rods in their speed to equalize and produce a required for the transverse transport gap. In this case, it may be that in the conveyed in the conveyor with compressed air articles there are irregularities that lead to a pressure surge in the receiving device, which worsen the equalization of the speed of the article in the receiving device, for example by accelerating a corresponding article. As a result, the intended gap may become too small, so that there may be problems in the operation of a corresponding conveyor, such as a jam or the damage of articles.

By providing the conveying speed limiting device according to the invention, it is prevented that the articles can be accelerated too much in the receiving device, or it is prevented that the articles are accelerated over a predeterminable speed.

Preferably, the conveying speed limiting device is additionally designed as a pneumatic second braking device. Braking device is understood in particular to mean a device which brakes the articles and / or dissipates kinetic energy from the articles. In particular, in the case of a first article which is introduced into the receiving device, this can subsequently, ie downstream of the first braking device, lead to this article being completely decelerated, ie brought to a standstill. A subsequently introduced article can then push on the introduced article in the conveying direction with the speed predetermined by the first braking device. Depending on the section length between the first brake device and the accelerator device in relation to the article length then more or less articles necessary to promote the first article up to the accelerator device. There, the article is then brought to a predeterminable speed to create a gap between this first article and the subsequent article. When conveying an article with a defined speed by another article and corresponding retention or braking by the second brake device then any pressure surges can no longer ensure that the braked by the second braking device undefined article receives too high a speed.

Preferably, the conveying speed limiting device or the second braking device has a brush and / or at least one spring plate and / or a braked roller.

The elements pressing against an article are, for example, bristles of a brush or spring-like metal sheets. It can also be provided a pair of rollers or a pair of brushes or a Federblechpaar or more spring plates, brushes and rollers. The rollers here are preferably braked rollers that are not driven. Rather, the braked roller or the braked pair of rollers is a passive brake element.

The conveying speed limiting device is preferably designed as a suction air device acting transversely on the rod-shaped filter rods. In particular, preferably in addition to a brush and / or a spring plate and / or a braked roller and a suction device may be provided which acts queraxial on the rod-shaped article. It is also possible that the suction air device is integrated in the brush and / or the spring plate and / or in the braked roller.

Preferably, the first brake device is designed as a brake roller pair. The brake roller pair is preferably driven at a predeterminable rotational speed.

Preferably, the acceleration device is designed as a pair of acceleration rollers.

Particular preference is given to a device for conveying rod-shaped filter rods of the tobacco-processing industry to an article magazine with a receiving device according to the invention described above.

The object is further achieved by a method for conveying compressed air-assisted rod-shaped filter rods of the tobacco processing industry, wherein the filter rods are conveyed longitudinally in a first braking device and then decelerated in the first braking device to a first predetermined speed, wherein the speed of the filter rods in a subsequent to the braking device conveying section is limited to a second predetermined speed, which is further developed in that to limit to the second predetermined speed, a second braking device is provided which permanently withdraws energy from the filter rods in the engagement region of the second braking device, wherein the second brake device provides mechanical friction with the filter rods by means of resiliently pressing against the filter rods elements.

Here, the subsequent to the braking device conveying section, in particular immediately, to the braking device subsequently. The conveying section is further arranged downstream in the conveying direction of the first braking device. The conveying section lies in particular between the first braking device and the accelerator. The inventive method, the reliability in conveying rod-shaped articles is significantly increased because occurring pressure surges do not cause a second predetermined speed is exceeded, so that a defined promotion with a predeterminable by the braking device speed is possible.

Characterized in that a second braking device is provided to limit the second predetermined speed, which permanently withdraws energy from the articles in the engagement region of the second braking device, a kind of braking takes place in this respect, wherein with continuous introduction of kinetic energy in the article, the second brake device not to do so This will cause the article to stall, but will result in the article not getting faster than the article pushing it.

Preferably, the second predetermined speed corresponds to the first predetermined speed, i. the second predetermined speed is then substantially identical to the first predetermined speed. This can be done, for example, that the products located in the conveyor section, which are no longer in the effective range of the first brake device and not in the effective range of the accelerator, are acted upon by longitudinal axial pushing a subsequent further located in the first brake device further article. The first brake device is driven. Alternatively, the second predetermined speed may be less than the first predetermined speed.

Preferably, the speed of the filter rods is increased downstream of the conveyor section. As a result, corresponding gaps between the articles can be generated, for example are desired in order to remove the articles after the acceleration transaxially.

Preferably, a filter rods arranged in the active region of the second brake device is at least partially pushed by an upstream article in the conveying direction.

Preferably, a negative pressure is exerted transaxially on the filter rods in the effective range of the second brake device.

Fig. 1

eine schematische Seitenansicht einer erfindungsge- mäßen Empfangsvorrichtung in einer ersten Ausfüh- rungsform,

Fig. 2

schematisch eine Seitenansicht einer erfindungsgemä- ßen Empfangsvorrichtung in einer zweiten Ausfüh- rungsform und

Fig. 3

eine schematische Seitenansicht einer erfindungsge- mäßen Empfangsvorrichtung in einer dritten Ausfüh- rungsform.

The invention will be described below without limiting the general inventive idea by means of embodiments with reference to the drawings, reference being expressly made to the drawings with respect to all in the text unspecified details of the invention. Show it:

Fig. 1

1 a schematic side view of a receiving device according to the invention in a first embodiment,

Fig. 2

schematically a side view of a receiving device according to the invention in a second embodiment and

Fig. 3

a schematic side view of a receiving device according to the invention in a third embodiment.

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 schematically shows a receiving device 15 according to the invention for the promotion of rod-shaped filter elements 6, 6 ', 6 ", 6'" and 6 "". The introduced into the filter element magazine 8 filter elements 6 - 6 "" serve, after these were cut, for example, in filter elements twice the length of use, to be merged with a tobacco rod twice the useful length to produce filter cigarettes. The filter elements 6 - 6 "" supplied into the filter element magazine 8 can also serve to be cut into corresponding filter segments and fed to an array of filter segments for the production of multi-segment filters. For this purpose, the device according to the invention can serve several or all functional units of a device for assembling groups of filter segments for the production of multi-segment filters of the tobacco-processing industry according to US Pat DE 101 55 292.0 assigned to the applicant.

The filter rods 6 - 6 "" are fed via a pipeline from a filter manufacturing machine by means of a filter element transmitter of a connecting line 1. The pipeline is in Fig. 1 not shown. The filter elements 6 - 6 "", which are conveyed at a distance in the feed tube to the connecting line 1, then pass into a sheet guide 2 to be braked by means of brake rollers 3, 3 'in a channel 5. Subsequently, the filter elements 6 are conveyed by means of accelerator rollers 4, 4 'via a guide, not shown, in a drum 7. The drum 7 and the other elements are closer in the EP 1 397 968 B1 described. It is in Fig. 1 illustrated that a filter rod 6 is received in the drum to be transported transversely in the magazine 8. There are also investigations the filter rod 6 made to determine if this is damaged, for example. If the filter rod 6 is damaged, this is discharged into a collecting container 9, as this in Fig. 1 is shown.

According to the invention, the longitudinal transport of filter rods 6 - 6 "" in a receiving device 15, which is part of a conveyor 16 or arranged in the conveying direction following the conveyor 16, the task, the task in undefined states of the pipeline, the upstream the connecting line 1 is arranged to equalize in their speed filter rods entering the receiving device and to produce a required for the Querabtransport gap. For this purpose, the filter rods 6 - 6 "" of the brake roller pair 3, 3 'are first brought to a defined _braking speed V _brake . At this speed, the filter rods are moved to the accelerator rollers 4, 4 ', which are designed as accelerator roller pair. In the case of the accelerator roller pair 4, 4 ', the filter rods 6 - 6 "" are brought to an acceleration speed V _acceleration and thus move away from the following, slow filter rods 6'"and6"". Fig. 1 to Fig. 3 ), the filter rods 6 'and 6 "move away at the appropriate speed, thereby creating a gap which is necessary for the transverse axial transport of the filter rods in the drum 7.

The brake roller pair 3, 3 'has a fixed predeterminable distance to the accelerator roller pair 4, 4'. By this distance, a conveyor section is defined in which filter rods, without being in engagement with an accelerator roller 4, 4 'or a brake roller 3, 3' to be promoted. The distance is so great that the longest filter rod to be processed, for example, with a length of 180 mm, can not be grasped simultaneously by the brake and accelerator roller.

In the processing of short filter rods, it is due to the distance between the brake and accelerator rollers 3, 3 ', 4, 4' to each other that there are free-flying filter rods, neither the brake nor the accelerator rollers 3, 3 ', 4, 4 'are held. In this case, influences from the piping may cause impulses from the piping to be transmitted in the form of an impulse to a free-flying filter rod (here 6 "'), which in this case would increase its velocity, which may cause a insufficient gap is drawn and as a result of a disturbance or arises in the receiving device.

By introducing a conveying speed limiting device, for example in the form of a brush 10, it can be ensured that such a pulse, which is transmitted to the free-flying filter rod 6 "'via the filter rod 6""located in the brake roller 3, 3', does not result That is, too small a gap and as a result, a disturbance comes in. The brush bristles are here as soft as possible, in order not to cause damage to the filter rods Fig. 2 a spring plate device 11 is provided which has four spring plates 12 in this embodiment. It can also be provided significantly more spring plates 12. Also, the spring plates 12 are preferably relatively soft so as not to cause damage to the filter rods. As the name suggests, the spring plates are configured correspondingly flexible and press transversely against the filter rod 6 "'. As a further variant, a suction device 13 can be provided which has suction air openings to the filter rod 6'". This is on Fig. 3 directed. By the negative pressure generated, the filter rod 6 '"sucked to the suction device 13 and corresponding kinetic energy from the filter rod 6'" removed.

The subsequent filter rod 6 "" disposed in the brake roller pair 3, 3 ', by conveying the filter rod 6 "" due to the movement of the brake roller pair 3, 3' which is driven, also pushes the filter rod 6 '"at the brake roller pair speed V _brake in the conveying direction 17. The corresponding conveying speed limiting devices 10 to 13 ensure that the filter rod 6 '"receives no undefined high speeds by pressure surges, for example, from the pipeline or connecting line 1.

Instead of the arrangement of the conveying speed limiting devices 10 to 13 below the filter rods or in the lower region of the channel 5 or above thereof or in the upper region of the channel 5, other arrangements may be possible, for example laterally. However, these are not shown in the figures. It is also possible to provide opposing brushes, spring plates or suction devices. It may also be provided a corresponding ring which acts around the circumference of the filter rod through which the filter rod must thus pass and, wherein from each side in accordance with a force acting on the filter rod to define this defined in the speed. Finally, a combination of the different variants may be conceivable, for example, a combination of a brush with a spring plate or brake plate may be provided. For example, relatively soft brush sections may be provided, followed by one or more spring plates in the conveying direction. It is also possible to provide a combination of the brush or the spring plates with a suction device. By the measures according to the invention, the reliability of the receiving device 15 can be substantially increased. The receiving device is more independent of interference coming from the pipeline in the receiving device.

LIST OF REFERENCE NUMBERS

1

connecting cable

2

bowing

3, 3 '

Drag reel

4, 4 '

accelerator role

5

channel

6, 6 ', 6 ", 6"', 6 ""

filter rod

7

drum

8th

magazine

9

receptacle

10

brush

11

Spring plate device

12

spring plate

13

suction device

15

receiving device

16

Conveyor

17

conveying direction

Claims (13)

1. Receiving device (15) of a conveying device (16) for transporting rod-shaped filter rods (6 - 6""), conveyed by compressed air, in the tobacco-processing industry, wherein the receiving device (15) has a device (3, 3') braking the filter rods (6 - 6""), first braking device, and a device (4, 4') accelerating the filter rods (6 - 6""), accelerating device, wherein the accelerating device (4, 4') is arranged downstream from the first braking device (3, 3'), wherein a conveying speed limiting device (10 - 13) is provided between the first braking device (3, 3') and the accelerating device (4, 4'), characterised in that the conveying speed limiting device (10 - 13) is developed as a mechanical second braking device (10 - 13), wherein the second braking device (10 - 13) comprises elements pressing with a spring action against a filter rod (6 - 6"").
2. Receiving device (15) according to claim 1, characterised in that the conveying speed limiting device (10 - 13) is additionally developed as a pneumatic second braking device (13) .
3. Receiving device (15) according to claim 2, characterised in that the second braking device (10 - 13) has a braked roller.
4. Receiving device (15) according to one of claims 1 to 3, characterised in that the second braking device (10 - 13) has a brush (10) and/or at least one spring metal sheet (12) .
5. Receiving device (15) according to one of claims 2 to 4, characterised in that the conveying speed limiting device (10 - 13) is developed as a suction air device (13) acting on the filter rods (6 - 6"") transversely to their axes.
6. Receiving device (15) according to one of claims 3 to 5, characterised in that the first braking device (3, 3') is developed as a pair of brake rollers.
7. Receiving device (15) according to one of claims 1 to 6, characterised in that the accelerating device (4, 4') is developed as a pair of accelerator rollers.
8. Device (16) for conveying rod-shaped filter rods (6 - 6"") in the tobacco-processing industry to an article store (8) with a receiving device (15) according to one of claims 1 to 7.
9. Method for conveying rod-shaped filter rods (6 - 6""), conveyed by compressed air, in the tobacco-processing industry, wherein the filter rods (6 - 6"") are conveyed into a first braking device (3, 3') longitudinally to their axes and are then braked in the first braking device (3, 3') to a first pre-determined speed, wherein the speed of the filter rods (6 - 6"") is limited in a conveyor section connecting, in particular directly, to the braking device (3, 3'), to a second pre-determined speed, characterised in that to limit to the second pre-determined speed, a second braking device (10 - 13) is provided which permanently takes energy from the filter rods (6 - 6"") in the engagement range of the second braking device (10 - 13), wherein the second braking device (10 - 13) provides a mechanical friction with the filter rods (6 - 6"") by means of elements (10 - 12) pressing with a spring action against the filter rods (6 - 6"").
10. Method according to claim 9, characterised in that the second pre-determined speed corresponds to the first pre-determined speed or is smaller than this.
11. Method according to claim 9 or 10, characterised in that the speed of the filter rods (6 - 6"") is increased downstream from the conveying section.
12. Method according to one of claims 9 to 11, characterised in that a filter rod (6"') arranged in the effective range of the second braking device (10 - 13) is pushed in the conveying direction (17) at least partially by a filter rod (6"") arranged upstream.
13. Method according to one of claims 9 to 12, characterised in that in the effective range of the second braking device (10 - 13), a negative pressure acts on the filter rod (6 - 6"") transversely to its axis.

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