EP3070013B1 - Coding device for coding container packaging, method for coding a container packaging and labelling system with a coding device - Google Patents

Description

The present invention relates to a coding device for coding bundle packs, in particular cigarette packs, a method for coding a bundle pack and a labeling system with a coding device. An encoder has a conveyor and a coding unit, wherein the conveyor has a cyclically driven conveyor belt for conveying the bundle packs. The coding unit encodes at least one bundle pack during a standstill of the conveyor belt.

Such packs are common in the tobacco industry to pick the packaged in cartons easier. Generally, these bundle packs are also known as cigarette rods and usually consist of a plurality of, for example ten, cigarette packs which are combined in rows, for example two rows, to form a container. In order to fix the container, this is usually wrapped with at least one outer sheath. The outer envelope may be formed, for example, from paper, cardboard or a plastic film.

Such a bundle pack is exemplary in Fig. 1 shown. The bundle pack 2 here consists of a total of ten Zigartettenpäckchen 2a, which are arranged in two rows of five Zigartettenpäckchen 2a. As in Fig. 1 To recognize the cigarette packets 2a are arranged so that they lie in the longitudinal direction with a side surface and in the transverse direction with one of the two largest surfaces. It is also conceivable, however, that the bundle pack 2 consists of more or fewer than ten packets of cigarettes 2a, which can also be arranged in a different formation.

The individual packets of cigarettes 2a usually have an outer wrapper made of cellophane. The bundle packs 2 are usually fixed by an outer sheath of cellophane.

Usually, these bundle packs are then provided with a so-called coding. This encoding fulfills several purposes. On the one hand, a machine-readable coding enables a simplified identification since, for example, batch number, manufacturer, date of manufacture and further information can be retrieved quickly and easily. On the other hand, this code can also be used to simultaneously apply a barcode for sale to end customers.

Such a coding device is for example from the EP 2 352 676 A1 known. Here, printed labels are affixed to the bundle packs. The packs of packs placed on a conveyor belt are cyclically fed to a coding unit which applies the label during the stoppage of the conveyor belt. The raw labels are wound up on a roll-like drum. The drum is unwound, the label printed and then glued to the bundle pack. To ensure uninterrupted operation here, the EP 2 352 676 A1 to arrange two such coding units in series. The redundant coding unit is intended to code the bundle packs in case of failure of the first coding unit, for example, when new raw labels are to be inserted.

Although the coding of bundle packs with one of the EP 2 352 676 A1 Consumption material must be replenished regularly so that in principle a skilled worker or an additional automated device must be available for this purpose. It has also been found that coding by means of affixed labels is not always permanent. For example, the label can be accidentally detached, damaged by environmental influences or even manipulated. Also results from the large number of individual steps (including printing, peeling, sticking) a relatively long process time.

Also is with the from the EP 2 352 676 A1 Known coding only a coding of the entire bundle pack possible. A single coding of cigarette packets - after they have been combined into a bundle pack - is no longer possible.

Furthermore, from the US 2009/0314413 A1 a coding device is known in which the coding of the bundle packs takes place via a laser. The preamble of claim 1 is known from US 2009/0314413 A1 known.

Against this background, it is an object of the present invention to provide a coding device and a method for coding packaging packages, in which the coding is permanent, cigarettes pack can be attached and the set-up and the process time of Coding be reduced. It is another object of the present invention to improve the coding quality and repeatability.

The object is achieved with a coding device according to claim 1, a labeling system according to claim 20 and a method for coding bundle packs according to claim 14 Advantageous developments are described in the dependent claims.

The coding device according to the invention is characterized in that the coding unit has at least one laser or at least one laser unit for applying the coding, in particular in the form of a laser inscription. The egg chains are therefore not printed and glued on, but the bundle pack or each of the packs forming the pack of cigarettes is coded directly, so that the use of consumables is largely reduced. Also results from the coding by means of laser and an advantageous processing time, since less than 500 msec are sufficient for this. The coding is also durable, tamper-proof, independent of weather conditions and can also be attached to the pack of cigarettes after production of the bundle pack. For example, moisture can not falsify the encoding or make it illegible. Also, for example, the origin of each packet of cigarettes can be reconstructed.

The conveyor has at least one positioning means, which positions the pack to be encoded during the standstill of the conveyor belt in the region of the coding unit or in a position. This has the advantage that all bundles of packages to be coded are coded essentially in the same place. In this case, it is advantageous if the bundle packs are provided with an at least partially transparent outer wrapper, wherein the transparent outer wrapper is permeable to the laser beam emitted by the laser, at least in the region of the laser inscription. In particular, it is advantageous if the bundle pack has an inner covering of an organic material, for example paper or cardboard, which is then laser-marked. However, the inner wrapper is not mandatory, because the coding can be applied directly to every single Zigartettenpäckchen. For this purpose, the transparent outer wrapper of each packet of cigarettes - if present - is also permeable to the laser beam emitted by the laser. Depending on requirements, the coding can thus be applied either to the bundle pack as such, or to the individual bundle pack forming Zigartettenpäckchen. In the following, therefore, both ways are understood by coding a bundle pack.

It has been shown that, in particular, for the transparent outer covering, in addition to the cellophanes already mentioned, materials belonging to the group of polypropylenes, polyethylenes, polyesters, Polyvinyl chlorides, cellulose acetates or the polyactides may have been found to be suitable. As a laser, for example, a fiber laser of the F-9000 series Metronic can be used. Damage to the transparent outer casing of the bundle pack and / or the Zigartettenpäckchen is not observed here.

In a further development, the positioning means has at least one roller, wherein the roller is arranged to the conveyor belt such that the bundle pack to be coded is arranged between the conveyor belt and the roller during the stoppage of the conveyor belt. It is particularly advantageous if the roller consists of a resilient or flexible material, for example of a sponge-like material.

It may be advantageous if the positioning means has a vacuum device for sucking the bundle pack. In particular, it is advantageous if the vacuum device comprises bores which come into contact with the bundle pack in the region of the coding unit. This vacuum device can be designed as a vacuum device with vacuum bores and holds the container device in the region of the coding unit.

If the bundle pack to be coded is transported on the conveyor belt and the conveyor belt is braked, it may happen that the bundle slips due to the inertia. Since the roller and / or the vacuum device is arranged in the area in which the packaged on the conveyor belt to be encoded and decelerated or comes to a standstill, this holds the bundle pack in position relative to the conveyor belt. In other words, such a relative change in position between bundle pack and conveyor belt is prevented. In order to prevent a relative change in position more effective, the conveyor belt may additionally have a surface with a high coefficient of friction or a high roughness. Thus, tolerances in the range of, for example, ± 0.5 mm can be adhered to during coding. Also, such high delays of up to 60 m / sec ² can be achieved, so that overall the process time can be reduced.

Appropriately, the conveyor belt has recordings for the bundle packs. These recordings may be formed, for example, as a carrier, studs, stop, recess or projection. In particular, it is expedient if the receptacles extend substantially vertically to or from the conveyor belt. This makes it possible to operate the conveyor belt at a relatively high maximum speed of up to 6 m / sec.

Further, the conveyor on two rails, which are each arranged on one side of the conveyor belt parallel to the conveyor belt. It is conceivable that the rails out Stainless steel are formed. These rails stabilize the bundle packs advantageously during conveyance through the conveyor belt.

It is advantageous if the conveyor has at least one guide rail which guides the bundles of packages to be conveyed in the conveying direction of the conveyor belt. It is also conceivable that a plurality, preferably two guide rails are provided, each extending on one side of the conveyor belt. Furthermore, it is also conceivable to provide a plurality of guide rails on one or both sides of the conveyor belt. The at least one guide rail is expediently made adjustable, so that the lateral distance to the conveyor belt is adjustable. Thus, it can be ensured that the bundle packs are conveyed reliably and uniformly, and the coding device can also be set to bundle packs with different dimensions.

Expediently, the coding device has a feed unit, wherein a bundle pack for conveyance through the conveyor belt can be raised into the conveying device by a punch of the feed unit extending substantially vertically to the conveyor belt. There, the bundle packs are then laterally displaced by the punch so that they are pushed onto the conveyor belt or in the conveyor. This has the advantage that the packaged packs are abandoned in largely identical positions on the conveyor belt or in the conveyor. Thus, tolerances of up to ± 0.1 mm can be maintained.

It is particularly advantageous if the feed unit gives up the bundle packs synchronously with the cyclical movement of the conveyor belt. Thus, when the conveyor belt is at a standstill, since, for example, a bundle pack is coded by the coding unit, a further bundle pack to be coded is fed onto the conveyor belt or into the conveyor by the feed unit. Through this synchronous operation, the timing can be increased and the entire process time can be significantly reduced.

In a further development, the conveying device has at least one slide rail oriented substantially parallel to the conveyor belt in the region of the feed unit. The slide rail preferably has a length which corresponds at least to the length of a bundle pack. It is also advantageous if the slide rail is made of plastic or another suitable material with a low coefficient of friction. Thus, it can be ensured that the feed unit gives the bundle pack to be coded onto the conveyor belt, without the bundle pack being tilted or damaged.

In this case, it is advantageous if the height of the at least one slide rail is selected so that a bundle pack abandoned by the feed unit rests only on the at least one slide rail. In particular, it is advantageous if the at least one slide rail has a height between 1 mm and 3 mm, preferably between 1.5 mm and 2.5 mm and particularly preferably of 2 mm. It can thus be ensured that a conveyance through the conveyor belt is ensured by the gap between the bundle pack resting on the at least one slide rail and the conveyor belt. In particular, it can be ensured that the recordings of the conveyor belt can be brought into contact with the bundle pack to be conveyed.

Expediently, the coding device has at least two sensors for detecting the position of a bundle pack in the feed unit and in the conveying device. Thus, it can be determined whether there has been a problem in the task of the bundle pack to be coded. For example, the process may be stopped so that it does not become clogged or damaged.

It is advantageous if the coding device has a control unit which is designed to check the coding of the bundle pack. If the control unit determines that the coding is faulty, the corresponding bundle can be removed directly or in a subsequent process step. The contents of the bundle can then be fed back to the process. On the one hand, the waste can be minimized. On the other hand, the overall product quality is increased.

In this case, it is advantageous if the control unit has at least one optical sensor and / or one camera unit. This ensures fast and efficient control of the coded bundle packs.

• Aufgeben einer zu codierenden Gebindepackung auf das Förderband der Fördereinrichtung;
• Fördern der zu codierenden Gebindepackung zur Codiereinheit;
• Anhalten des Förderbandes und Positionieren der zu codierenden Gebindepackung mit dem Positioniermittel im Bereich der Codiereinheit,
• Aufbringen der Codierung auf die Gebindepackung mit dem Laser, insbesondere in Form einer Laserbeschriftung.

In terms of the method, the object is achieved by a method for coding a bundle pack with an inventive coding device, which has the following steps:

• Placing a bundle pack to be coded on the conveyor belt of the conveyor;
• Conveying the bundle pack to be coded to the coding unit;
• Stopping the conveyor belt and positioning the bundle pack to be coded with the positioning means in the area of the coding unit,
• Applying the coding on the bundle pack with the laser, in particular in the form of a laser marking.

Conveniently, the bundle pack is pushed by the feed unit onto the conveyor belt or positioned so that the bundle pack can be transported through the conveyor belt. It is also advantageous if the coding is checked by the control unit.

The coding device is in particular to be operated so that the conveyor belt is stopped in a cycle between 200 msec and 400 msec, preferably between 250 msec and 350 msec, and particularly preferably for 300 msec.

It is also advantageous if the conveyor belt is moved at a maximum speed between 3 m / sec and 6 m / sec, preferably between 4 m / sec and 5 m / sec and particularly preferably at 4.5 m / sec.

Expediently, the conveyor belt is accelerated and / or decelerated between 30 m / sec ² and 60 m / sec ² , preferably between 40 m / sec ² and 50 m / sec ² and particularly preferably at 45 m / sec ² .

The above parameters have been found to be advantageous, individually or in combination, in order to achieve a high coding quality with the least possible processing time.

Furthermore, the invention also relates to a labeling system with a coding device according to the invention.

Fig. 2

eine erste perspektivische Ansicht einer Codiervorrichtung gemäß einem ersten Ausführungsbeispiel;

Fig. 3

eine zweite perspektivische Ansicht der in Fig. 1 gezeigten Codiervorrichtung;

Fig. 4

eine Draufsicht auf die in den Fig. 2 und Fig. 3 gezeigte Codiervorrichtung;

Fig.5

eine erste perspektivische Detailansicht einer Codiereinheit und einer Zuführeinheit gemäß dem ersten Ausführungsbeispiel;

Fig. 6

eine zweite perspektivische Detailansicht einer Codiereinheit und einer Zuführeinheit gemäß dem ersten Ausführungsbeispiel;

Fig.7

eine dritte perspektivische Detailansicht einer Codiereinheit und einer Zuführeinheit mit freigeschnittenem Gehäuse gemäß dem ersten Ausführungsbeispiel;

Fig. 8

eine vierte perspektivische Detailansicht einer Codiereinheit und einer Zuführeinheit mit freigeschnittenem Gehäuse gemäß dem ersten Ausführungsbeispiel;

Fig.9

eine perspektivische Ansicht einer Codiervorrichtung mit freigeschnittenem Gehäuse gemäß dem ersten Ausführungsbeispiel; und

Fig. 10

eine perspektivische Detailansicht einer Codiereinheit und einer Zuführeinheit gemäß einem zweiten Ausführungsbeispiel.

The invention will be explained in more detail with reference to the embodiments shown in FIGS. This show schematically

Fig. 2

a first perspective view of a coding device according to a first embodiment;

Fig. 3

a second perspective view of the in Fig. 1 shown coding device;

Fig. 4

a plan view of the in the Fig. 2 and Fig. 3 shown coding device;

Figure 5

a first perspective detail view of a coding unit and a feed unit according to the first embodiment;

Fig. 6

a second perspective detail view of a coding unit and a feed unit according to the first embodiment;

Figure 7

a third perspective detail view of a coding unit and a feed unit with cut-free housing according to the first embodiment;

Fig. 8

a fourth detailed perspective view of a coding unit and a feed unit with cut housing according to the first embodiment;

Figure 9

a perspective view of a coding device with cut housing according to the first embodiment; and

Fig. 10

a detailed perspective view of a coding unit and a feed unit according to a second embodiment.

In the FIGS. 2 to 9 1 shows a first exemplary embodiment of a (partially cut-out) coding device 1 for bundle packs 2, for example cigarette packs, which is integrated in a labeling system 20. The labeling system 20 is generally known and will not be described further here. The coding device 1 has a conveying device 3, an encoding unit 4 and a feed unit 12. The conveying direction of the bundle packs 2 by the labeling system 20 with a coding device 1 according to the invention is indicated in the figures by the gray background block arrows. As can be seen from the figures, the bundle packs 2 are transported lengthwise. It is also conceivable, however, for the bundle packs 2 to be conveyed widthwise or rotated accordingly during the conveyance.

As in Fig. 2 illustrated, the coding device 1 is arranged on a frame which also carries the electronic components, such as a control unit or the power supply unit. The bundle packs 2 are conveyed by a conveyor belt to the coding device 1 and fed by further conveying devices for further processing after it has been coded.

The bundle packs 2 are first fed by a conveyor belt of the feed unit 12. Here, the bundle packs 2 are positioned so that they are aligned substantially parallel to a conveyor belt 5 of the conveyor 3. The feed unit has a punch 13, which gives the bundle packs 2 on the conveyor belt 5 and in the conveyor 3. The punch 13 is movable vertically to the conveyor belt 5 by being driven by an eccentric disk 14. In this embodiment, the punch 13 is connected via a connecting rod 15 with the eccentric disc 14. The punch 13 is guided on two linear guides 16, so that the rotating movement of the eccentric disc 14 is translated into a linear-reciprocal movement of the punch 13. The eccentric 14 is driven by a (not shown) servo drive.

The punch 13 displaces the bundle pack 2 laterally so that it is fed to the conveyor 3. In order to ensure a safe task of the bundle pack 2 to be coded, the conveyor 3 has two slide rails 17 made of plastic with a low coefficient of friction, which are each arranged on one side of the conveyor belt 5. The slide rails 17 have a length, which is slightly larger than the length of a bundle pack 2. As a result, the bundle pack 2 lies completely on the slide rails 17. Further, the slide rails have a height of about 2 mm, so that the abandoned from the feed unit 12 bundle pack 2 does not come into contact with the conveyor belt 5. Rather, the conveying plane of the conveyor belt 5 is at a slightly lower horizontal level. In order to monitor the feeding process of the bundle pack 2 to be coded, there are at least two sensors (not shown) which monitor the position of the bundle pack 2 in the feed unit 12 and in the conveying device 3. The achieved positioning accuracy or tolerance is ± 0.1 mm.

For conveying the bundle packs 2, the conveyor belt 5 has corresponding receptacles 9, which are formed in this embodiment as extending from the conveyor belt 5 noses or support and at the rear end of the respective bundle pack 2 seen in the conveying direction. The surface of the conveyor belt 5 is further provided with an anti-slip coating. Furthermore, the conveyor 3 on two rails 10 which extend over the entire length of the conveyor belt 5 laterally from this. The rails 10 are arranged so that the facing in the direction of the bundle pack 2 surfaces are slightly below the conveying plane of the conveyor belt 5. In this embodiment, the difference is 1 mm. Thus, the bundle packs 2 can be stabilized during the promotion. In order to ensure lateral guidance of the bundle packs 2, the conveyor 3 has guide rails 11. The guide rails 11 are adjustable in their distance from the conveyor belt 5, so that the coding device 1 is adjustable to different widths packs 2.

The conveyor belt 5 is driven in cycles, wherein the timing is synchronized with the movement of the punch 13. During a standstill of the conveyor belt 5 to be encoded bundle pack 2 is abandoned by the feed unit 12 and encoded by the encoding unit 4, as will be described in more detail below. The conveyor belt 5 can be driven at a maximum speed of up to 6.0 m / sec, wherein a speed of 4.5 m / sec has proven to be particularly advantageous. The maximum acceleration or deceleration of the conveyor belt 5 can be up to 60 m / sec ² , wherein a value of 45 m / sec ^{2 has been found to} be particularly suitable.

To promote the resting on the slides 17 bundle pack 2 with the conveyor belt 5 in the conveying direction, a receptacle 9 of the conveyor belt 5 is brought into contact with the bundle pack 2 by the conveyor belt 5 starts. Thus, the bundle pack 2 is taken in the conveying direction and conveyed to the coding unit 4.

In order to correctly position the bundle pack 2 to be coded for coding by the coding unit 4, the conveying device 3 has a positioning means 7 in the area of the coding unit 4. The positioning means 7 comprises in this embodiment a plurality of rollers 8 (here are in the Fig. 2 to 9 exemplified two rollers 8 shown), which are arranged above the conveyor belt 5. The rollers 8 are made of a flexible or compliant material and come into contact with the surface of the bundle pack 2, in particular in the Fig. 4 to 7 easy to recognize. When the conveyor belt 5 is brought to a standstill, it is prevented by the rollers 8 that the bundle pack 2 to be coded, due to the inertia, slips in position relative to the conveyor belt 5. The rollers 8 exert a force on the bundle pack 2, so that the bundle pack 2 between the conveyor belt 5 and the rollers 8 is easily clamped. Thus, a positioning accuracy of ± 0.5 mm in the area of the coding unit 4 can be achieved.

For coding the bundle packs 2, the coding unit 4 has two lasers 6 or laser units. The distance from a respective laser 6 to the bundle pack 2 to be coded is approximately 300 mm to 400 mm, preferably the distance is 190 mm to 370 mm. In this embodiment, the distance is 348 mm, which has been found to be particularly suitable. The laser 6 are separately adjustable at a distance to the bundle pack 2. The lasers 6 are laterally offset from one another by approximately 100 mm to 200 mm. As suitable, a distance of 150 mm has been found.

The bundle packs 2 are then coded by the laser 6 during the stoppage of the conveyor belt 5 by the laser applying a laser inscription directly to the bundle pack 2 or to an outer wrapping of the bundle pack 2. In particular, in this case, a laser 6 has been found to be useful, which emits a laser beam having a wavelength between 1000 microns and 1100 microns, in particular with a wavelength of 1060 microns to 1070 microns. A wavelength of 1062 μm has proven to be particularly suitable.

By means of the illustrated coding unit 4, the packet of cigarettes 2a forming the bundle pack 2 (cf. Fig. 1 ) are coded individually. For this purpose, the coding is applied to one of the narrow sides of the Zigarttenpäckchen 2a, for example on the sides of the cigarette packet 2a, denoted by the reference numeral "2a" in Fig. 1 are provided. For this purpose, the bundle pack 2 to be encoded has a transparent outer covering (in particular made of cellophane), which is permeable to the laser beam at the corresponding points. The same applies to the outer envelope of cigarette packets 2a, provided that they have an outer envelope.

After the coding process, the bundle packs 2 are conveyed to a control unit 18, which has an optical sensor or a camera unit 19. By several (in this case five) Trigger sensors 21, the bundle pack 2 is detected and the newly applied coding checked cigarettes pack. In this case, it is preferable to always check the coding of in each case two cigarette packets 2a arranged one above the other. If the coding is faulty, the bundle pack 2 is discharged. This can be realized, for example, immediately after the control unit 18 by suitable means. Alternatively, the incorrectly coded bundle pack can also be discharged in another area of the labeling system 20 or in a subsequent process section.

In this embodiment, the conveying distance per cycle is about 410 mm. For the coding, a standstill time of approximately 200 to 400 msec, in particular of 300 msec, has proved suitable.

In Fig. 10 a second embodiment of a coding device 1 according to the invention is shown. This embodiment differs from that in the Fig. 2 to 9 shown embodiment in that the positioning means 7 comprises a vacuum device 80. Thus, in Fig. 10 only the different components from the first embodiment provided with a reference numeral.

The vacuum device 80 is designed as a vacuum device and comprises a plurality of bores 81. These bores 81 are arranged in this embodiment in both rails 10 on both sides of the conveyor belt 5. When the conveyor belt 5 is brought to a standstill, a negative pressure is applied by the vacuum device 80 by means of bores 81, which prevents the bundle pack 2 to be coded from slipping in position relative to the conveyor belt 5 due to the inertia. In other words, the bundle pack 2 is sucked in to prevent further slippage. It is also conceivable that the positioner means 7 comprises both the Unterdurckvorrichtung 80 and the rollers 8 shown in the first embodiment.

Of course, the coding device 1 according to the invention can also have more than one coding unit 4. These coding units 4 can also be arranged on both sides of the conveyor 3.

Furthermore, the positioning means 7 according to the invention can also be used independently of the coding unit 4. The positioning means 7 is in principle quite generally intended to prevent slippage of bundle packs 2 relative to the conveyor belt 5.

REFERENCE NUMBERS

1

coding

2

multipack

2a

packet of cigarettes

3

Conveyor

4

coding

5

conveyor belt

6

laser

7

positioning

8th

role

9

admission

10

runner

11

guide rail

12

feed

13

stamp

14

eccentric

15

pleuel

16

linear guide

17

slide

18

control unit

19

optical sensor / camera unit

20

labeling system

21

trigger sensor

80

Vacuum device

81

drilling

Claims (20)

1. A coding device (1) for coding of packing units (2), in particular packing units of cigarettes, which has a conveying means (3) and a coding unit (4),
   wherein the conveying means (3) comprises a conveyor belt (5) for transporting the packing units (2), and
   wherein the coding unit (4) comprises at least one laser (6) for applying a coding in the form of a laser inscription, characterized in that
   the conveyor belt (5) is driven in a cyclical manner, and the coding unit (4) performs coding of at least one packing unit (2) while the conveyor belt (5) is being stopped, wherein the conveying means (3) comprises at least one positioning means (7) which positions the packing unit (2) to be coded in the zone of the coding unit (4) during the stop of the conveyor belt (5).
2. The coding device (1) according to claim 1, characterized in that
   the positioning means (7) comprises at least one roller (8) made in particular of a flexible material, wherein the roller (8), in relation to the conveyor belt (5), is arranged so that, during a stop of the conveyor belt (5), the packing unit (2) to be coded is disposed between the conveyor belt (5) and the roller (8).
3. The coding device (1) according to any of the preceding claims, characterized in that the positioning means (7) comprises a vacuum device (80) for holding by suction the packing unit (2) to be coded.
4. The coding device (1) according to any of the preceding claims, characterized in that the conveyor belt (5) comprises reception means (9) for the packing units (2).
5. The coding device (1) according to any of the preceding claims, characterized in that the conveying means (3) comprises two rails (10), wherein the rails (10) are arranged on either side of the conveyor belt (5), in parallel to the conveyor belt (5).
6. The coding device (1) according to any of the preceding claims, characterized in that the conveying means (3) comprises at least one guiding rail (11), wherein the guiding rail (11) is guiding the packing units (2) to be transported in the conveying direction of the conveyor belt (5).
7. The coding device (1) according to any of the preceding claims, characterized in that the coding device (1) comprises a feeder unit (12), wherein a packing unit, in order to be transported by the conveyor belt (5), can be placed onto the conveying means (3) by a piston (13) of the feeder unit (12), which piston is vertically movable in relation to the conveyor belt (5).
8. The coding device (1) according to claim 7, characterized in that
   the feeder unit (12) carries out placing of the packing units (2) synchronized with the time cycles of the movement of the conveyor belt (5).
9. The coding device (1) according to any of the preceding claims 7 or 8, characterized in that the conveying means (3), in the zone of the feeder unit (12), comprises at least one slide rail, which is oriented in parallel to the conveyor belt (5), wherein the length of the slide rail (17) preferably at least equals the length of a packing unit (2).
10. The coding device (1) according to claim 9, characterized in that
    the height of the at least one slide rail (17) is chosen so that a packing unit (2) after having been placed by the feeder unit (12) rests only on the at least one slide rail (17).
11. The coding device (1) according to any of the preceding claims 7 to 10, characterized in that
    the coding device (1) comprises at least two sensors for detecting a position of a packing unit (2) in the feeder unit (12) and in the conveying unit (3).
12. The coding device (1) according to any of the preceding claims, characterized in that the coding device (1) comprises a monitoring unit (18), wherein the monitoring unit (18) is configured to inspect the coding of the packing units (2).
13. The coding device (1) according to claim 12, characterized in that the monitoring unit (18) comprises at least one optical sensor (19) and/or a camera unit (19).
14. A method for coding a packing unit (2) by means of a coding device (1) according to any of the preceding claims, comprising the steps of:

    placing a packing unit (2) to be coded onto the conveyor belt (5) of the conveying means (3), transporting the packing unit (2) to be coded to the coding unit (4),

    stopping the conveyor belt (5) and positioning the packing unit (2) to be coded by means of the positioning means (7) in the zone of the coding unit (4),

    applying the coding on the packing unit (2) in the form of a laser inscription.
15. The method according to claim 14, wherein a packing unit (2) to be coded is pushed onto the conveyor belt (5) by the feeder unit (12).
16. The method according to claim 14 or 15, wherein a coding after having been applied is inspected by the monitoring unit (18).
17. The method according to any of the preceding claims 14 to 16, wherein the conveyor belt (5), in one time cycle, is being stopped between 200 msec and 400 msec, preferably between 250 msec and 350 msec, and particularly preferred for 300 msec.
18. The method according to any of the preceding claims 14 to 17, wherein the conveyor belt (5) is being driven with a maximum velocity between 3 m/sec and 6 m/sec, preferably between 4 m/sec and 5 m/sec, and particularly preferred with 4.5 m/sec.
19. The method according to any of the preceding claims 14 to 18, wherein the conveyor belt (5) is being accelerated and/or decelerated between 30 m/sec² and 60 m/sec², preferably between 40 m/sec² and 50 m/sec², and particularly preferred with 45 m/sec².
20. A labeling system (20) having a coding device (1) according to any of the claims 1 to 13.

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