EP2279954A2 - Cutting device, method for cutting labels and labelling device - Google Patents

Abstract

The device has a cutting element for cutting a label strip provided with labels and comprising a cutting tool parallel to an axis. A counter-pressure roller supports the label strip, and rotatable about another axis arranged parallel to the former axis. The roller has a counter-cutting bar (6) that is provided on an outer surface of the roller. The bar has width perpendicular to the latter axis in such a manner that a cutting position at which the cutting element makes contact with the bar when cutting the label is shifted on the bar. An independent claim is also included for a cutting method for cutting labels with a cutting element.

Description

The invention relates to a cutting device and a cutting method for cutting labels as well as to a labeling device equipped with this cutting device.

A labeling device is used to coat items, such as bottles, cans, etc., with a label. For this purpose, in the labeling device labels from a label roll, which is provided with a plurality of labels, which are arranged in the direction of a rolling or unwinding of the endless roll behind one another, separated by means of a cutting device and then attached to the articles to be labeled.

From the EP 2 042 437 A1 or the DE 20 2005 002 793 U1 Cutting devices for cutting labels are known. The cutting devices comprise a rotating vacuum roller and a rotating separator. The separating element has on its periphery at least one separating tool, which is preferably a cutting blade, but may also be a punching tool. The labels are passed over the vacuum roll and held thereon by means of vacuum loading of the vacuum roll through openings provided in the roll surface of the vacuum roll so that the separation element can cut off the labels in a controlled manner. For this purpose, the vacuum roller also has counter cutting strips on which the label roll rests during the cutting process and with which the cutting blade can be brought into contact for cutting through the label endless roll. The counter cutting strips are formed by metal strips. The cutting operation of the label or the label endless roll is performed by the contact of the cutting blade and counter cutting bar. The metal strips are preferably introduced into the vacuum roll such that they do not protrude from the roll surface.

In addition, at least two cutting blades for severing the label are often provided in the rotating separating element, since in this way the rotational speed of the separating element can be lowered with the same power of the labeling. For more than two cutting blades, the separator does not need to make 360 ° turns from one label cut to the next, but two cutters require only 180 ° rotation and four cutters require only 90 ° rotation.

At least two counter cutting strips are also preferably present on the rotating vacuum roll, at which point the cutting knife can cut through the label roll. It is also possible, for example, to provide three or four counter cutting bars with an equal spacing from one another or at different distances. For example, an arrangement of the counter cutting strips is possible in which the counter cutting strips each have a distance of 60 ° to each other.

In this prior art, however, there is the problem that at an unfavorable for the dimensions of the respective vacuum roll label length of the label start is exactly on a counter-cutting bar and can not be held by vacuum. This leads according to the internal state of the art of the Applicant so far that this counter cutting strip must be removed and a suitable in the recess of the counter cutting strip in the vacuum roll bar with openings must be used to at the location of the bar on the openings by means of the vacuum roller Create vacuum. Such lasts with openings are currently to be made by the user of the labeling or the cutter itself, which is difficult, however, since the openings must be made obliquely to the surface of the bar and easily break off a drill used for creating the openings, for example. Should be in such a converted vacuum roller later again at the point at which the converted bar was installed, take place a cutting of the label roll, currently is the converted bar again expand and it is the originally existing counter cutting bar installed.

It follows that, depending on the length of the labels, a considerable conversion effort for the user of the labeling machine or the cutting device arises, which proves to be disadvantageous due to time and cost aspects in a labeling of objects.

In addition, the described replacement of the originally existing counter-cutting bar is not possible with an apertured bar with newer cutting devices, since the newer cutting devices require manufacturing tolerances that can not be met by a removal and replacement of the original counter cutting strip by the user. In the case of newer cutting devices, the user can not even make do with the previously described conversion of the labeling device, so that the newer cutting device can not be used at a label length that is unfavorable for the dimensions of the respective vacuum roller.

In addition, it has already been considered to change the vacuum rolls in such a way that more openings or vacuum openings are present in the roll surface of the vacuum roll. That is, it has been considered to arrange the openings or vacuum opening rows arranged in rows perpendicular to the axis of the vacuum roller in the vacuum roller with a closer hole distance from vacuum opening row to vacuum opening row. However, the more openings are present in the vacuum roll, the longer the cleaning time of the cutting device, which has a longer machine downtime result. In addition, in such a variant, the problem can not be solved that with an unfavorable label length of the label start is exactly on the counter cutting bar or next to a vacuum opening.

It is therefore an object of the invention to provide a cutting device and a cutting method for cutting labels and a labeling available with which labels with any length without costly conversion of the cutting device and / or reducing the throughput of the cutting device and thus the labeling can be cut ,

The object is achieved by a cutting device for cutting labels according to claim 1, a labeling device according to claim 14, and also a cutting method according to claim 15.

The cutting device has a cutting element and a counter-pressure roller. The cutting element is for cutting a label tape which is provided with a plurality of labels which are arranged one behind the other in the direction of the length of the label strip, wherein the cutting element has a cutting tool parallel to a first axis about which the cutting element is rotatable. The counter-pressure roller is used for laying the label strip, wherein the counter-pressure roller is rotatable about a second axis, which is arranged parallel to the first axis, and has at least one counter-cutting bar, which is provided on the lateral surface of the counter-pressure roller substantially parallel to the second axis. Here, the at least one counter-cutting bar has a width perpendicular to the second axis, which is smaller than the length of the counter-cutting bar parallel to the second axis. In addition, the at least one counter-cutting bar has a width such that the cutting position at which the cutting element contacts the counter-cutting bar when the label is cut is displaceable on the counter-cutting bar.

The labeling device has such a cutting device and is used for attaching the cut by the cutting device labels to be provided with labels items.

In particular, the changed width of the counter-cutting bar in the cutting device is in contrast to the previous approach, the counter-cutting bar to minimize the manufacturing costs as narrow as possible.

Advantageous embodiments of the cutting device are specified in the dependent claims.

Preferably, the counter-pressure roller has a plurality of openings in the lateral surface of the counter-pressure roller for generating a negative pressure in the counter-pressure roller when the openings are at least partially covered by the label tape. In this case, the openings in the counter-pressure roller are advantageously arranged in a plurality of mutually parallel Rows arranged, which are arranged substantially perpendicular to the counter-cutting strips on the surface of the counter-pressure roller. However, the arrangement of these openings could also be designed differently, for example in the form of not exactly parallel rows.

It is advantageous if at least one of the at least one counter cutting strip has a multiplicity of openings which are connected to openings in the surface of the counterpressure roller in such a way that a label strip resting on the counter cutting strip is held against the counter cutting strip when a negative pressure is generated by the counterpressure roller.

Here, the plurality of openings of the counter-cutting bar can be arranged in a row along the length of the counter-cutting bar and substantially in the middle of the width of the counter-cutting bar.

Preferably, the cutting device is configured such that the cutting position on the counter-cutting bar is displaceable such that the label start of a label can be placed on the label tape such that the plurality of openings in the outer region of the label is arranged.

The cutting device can also be configured such that it is controllable by a control device which is designed to move the cutting position on the counter-cutting bar such that they the rotational position of the platen roller and cutting element to each other from a starting rotational position, in which a cutting tool in contact with a counter cutting bar the counter-pressure roller always impinges on a predetermined position of the width of the counter-cutting bar, offset in another rotational position to each other.

The cutting position may be displaceable by a drive device which is designed to at least temporarily change a peripheral speed of at least one rotating element, which is the cutting element or the counter-pressure roller relative to the respective other rotating element.

The cutting position may also be displaceable by a drive device, which at least temporarily slowing down or accelerating the peripheral speed of Cutting elements against the peripheral speed of the platen roller is configured.

Furthermore, the cutting position can be displaced by a drive device, which is designed for at least temporary slowing or acceleration of the peripheral speed of the counter-pressure roller relative to the peripheral speed of the cutting element.

It is also possible to shift the cutting position by a drive device which is designed for at least temporary variation of the supply speed of the label strip relative to the peripheral speed of the counter-pressure roller and / or the peripheral speed of the cutting element.

The counter cutting bar may preferably have a width of 5 to 20 mm, preferably 13 to 14 mm.

The cutting method is for cutting labels with a cutting element which cuts a label tape provided with a plurality of labels arranged one after the other in the direction of the length of the label tape into individual labels, the cutting element having a cutting tool parallel to a first axis, around which the cutting element is rotated, and wherein the cutting tool when cutting the label strip contacts a counter cutting strip of a counter-pressure roller on which the label tape is placed, wherein the counter-pressure roller is rotated about a second axis, which is arranged parallel to the first axis, and at least one Counter-cutting bar, which is provided on the lateral surface of the counter-pressure roller substantially parallel to the second axis and preferably in the second axis, wherein the at least one counter-cutting bar has a width perpendicular to the second axis, which is smaller than the length of the counter-cutting bar is parallel to the second axis. In this case, the cutting position at which the cutting element contacts the counter-cutting bar when cutting the label, before cutting the label tape into individual labels on the width of the counter-cutting bar is moved.

Due to the counter cutting strips, which are made wider compared to the prior art, the whole area of the counter cutting strip for "cutting" or separating the Labels are used by the label tape. By shifting the cutting position on the counter cutting bar, as described above, a secure hold of the label start is always guaranteed. In addition, the changeover time and thus the downtime of a labeling can be reduced, which is equipped with the cutting device described. This can save costs and time.

Fig. 1

eine schematische Draufsicht auf eine Etikettiermaschine;

Fig. 2

eine schematische Draufsicht auf eine Schneideinrichtung einer solchen Etikettier- maschine;

Fig. 3

eine schematische perspektivische Ansicht der Schneideinrichtung;

Fig. 4

eine dreidimensionale Ansicht einer Gegendruckwalze der Schneideinrichtung; und

Fig. 5

eine schematische Draufsicht auf die Gegendruckwalze der Schneideinrichtung.

The invention will be described in more detail with reference to the accompanying drawings and exemplary embodiments. Show it:

Fig. 1

a schematic plan view of a labeling machine;

Fig. 2

a schematic plan view of a cutting device of such a labeling machine;

Fig. 3

a schematic perspective view of the cutting device;

Fig. 4

a three-dimensional view of a counter-pressure roller of the cutting device; and

Fig. 5

a schematic plan view of the counter-pressure roller of the cutting device.

(First embodiment)

Fig. 1 shows a schematic plan view of a labeling machine, which allows a continuous high-performance application of wrap-around labels on a single-line row continuously supplied bottles 10.

The labeling machine has a feed conveyor 24, an inlet star wheel 25 with an upstream Einteilschnecke 23, a guide arc 22, a carousel 27 with a plurality of equally spaced on a common pitch circle turntables 26, a discharge star wheel 8 and a discharge conveyor 9. The mentioned, the Bottles 10 moving through the machine transport elements are speed and position synchronously driven continuously to each other.

In the circulation area between the inlet star wheel 25 and the outlet star wheel 8 is located on the outer periphery of the carousel 27, a labeling unit 12 for applying wrap-around labels. The labeling unit 12 has two label roll receptacles 14 with an intermediate splicing station 15, a cutting device 1, a gluing unit 17 and a gripper cylinder 7 for transferring a pre-cut label glued to its leading and trailing edges onto a bottle 10 passing by.

The labeling of a bottle 10 with the labeling of Fig. 1 is essentially as follows.

A brought up by the feed conveyor 24 bottle 10 is introduced in connection with the laterally arranged Einteilschnecke 23 positionally correct in the inlet starwheel 25 and pushed by this in cooperation with the opposite guide arc 22 in continuous motion on a turntable 26 of the rotating carousel 27. There, the bottle 10 is rotatably clamped by an unillustrated, relative to the turntable 26 controlled raised and lowered centering axially on the turntable 26 with this and brought by the orbital motion of the carousel 27 tangentially to the gripper cylinder 17 of the labeling unit 12.

For this purpose, running in parallel, the label strip is withdrawn in a controlled manner from a label tape roll 14 and guided past a print mark or print image sensor which is not shown here and cut into the printed image or the cut marks in the cutting device 1 connected to the sensor. The separated label, which is located during the cutting process with the printed image to the outside on a rotating counter-pressure roller 2 is transferred after the separation process to the vacuum-operated gripper cylinder 7, from where it passes by the glue roller 18 with the back outside and with each a glue strip at the beginning and at the end is provided. This provided with the start or Endleimstreifen label is tangentially the carousel 27, on which the bottles 10 are supplied. The initial glue strip is brought into contact with the bottle 10 and by rotating the bottle 10 about its own axis the label is wound up, whereby the end glue strip is glued either overlapping or edge to edge with the beginning of the label. The described attachment of the label takes place during a continuous forward movement of the carousel 27th

After passing through the labeling unit 12 and after completion of the winding process, the labeled bottle 10 reaches the outlet starwheel 8 in the further course and is transferred to the outlet conveyor 9.

Fig. 2 shows a detailed view of the cutting device 1 of the labeling unit 12. The label tape, which is subtracted from the label tape rolls 14, the counter-pressure roller 2 of the cutting device 1 is supplied tangentially in the direction of arrow 31 and led away from it in the direction of the arrow 32. The peripheral speed of the rotating counter-pressure roller 2 is equal to the feed speed of the label tape, so that the transport of the label tape on the counter-pressure roller 2 takes place frictionally without slippage. A printed image or cut mark sensor, not shown here, scans the label tape with respect to the points to be cut and passes its information directly to the drive unit of the separating element or cutting element 3 and / or the counterpressure roller 2. A program control can determine the time of cutting and thus determine the peripheral speed of the cutting element 3 about a first axis A and / or the peripheral speed of the counterpressure roller 2 about a second axis B. It is considered that the peripheral speed of the cutting tool 4 in the rotating cutting element 3 is equal to the peripheral speed of the platen 2 and thus also the transport speed of the label tape.

Fig. 3 shows a perspective view of the cutting device 1 of the labeling unit 12. The label strip to be cut is fed to the counter-pressure roller 2 in the direction of the arrow 31. The counter-pressure roller 2 and the cutting element 3 are driven by their own drive means, here only the motor drive means 5 of the cutting element 3 is shown, that the cutting tool 4 at the time of cutting the label with the counter-element 6 on the platen roller 2 engages , wherein at this moment the peripheral speed of the cutting element 3 and the counter pressure roller 2 are the same. The cutting tool 4 is spring-mounted in the cutting element 3 in order to be able to separate or cut wear-resistant for the cutting tool and gently for the label during engagement with the counter element 6. The counter element 6 is also referred to below as a counter cutting bar 6.

As in Fig. 3 shown, the platen 2 has a plurality of openings 65 which are arranged in rows along the circumference of the platen 2 in a row. At the Counter-pressure roller 2 are a plurality of such rows parallel to each other and arranged at a predetermined distance from each other. Here, the rows of openings 65 are arranged such that the openings 65 of two juxtaposed rows substantially lie on a line which is perpendicular to the row with openings 65, that is perpendicular to the axis of rotation B of the platen 2. Through the openings 65, a negative pressure or a vacuum on the roll surface or lateral surface of the platen 2 can be generated, so that a resting on the platen roller 2 label tape is sucked to the platen 2 and is thus held by the platen 2.

The arrangement of the rows of openings 65 is also selectable, as in Fig. 4 shown. That is, rows of openings 65 may be arranged such that the openings 65 of two juxtaposed rows do not lie in a line perpendicular to the row of openings 65, that is perpendicular to the axis of rotation B of the platen 2. That is, openings 65 of two juxtaposed rows are offset from each other, as in FIG Fig. 4 shown. Here, the openings 65 of two juxtaposed rows in the vicinity of a counter-cutting bar 6 are arranged substantially on a line which is perpendicular to the row with openings 65, that is perpendicular to the axis of rotation B of the counter-pressure roller 2. In Fig. 4 these are the two openings 65 arranged on the right and left side of the counter cutting bar 6 closest to the counter cutting bar 6.

In Fig. 4 are two different widths of the counter-cutting bar 6 at a mounting location of the counter-cutting bar 6 for better illustrating the difference between a counter-cutting bar 6a of the prior art and the counter-cutting bar 6 according to the present embodiment located.

The lower counter cutting bar 6a in Fig. 4 , the counter-cutting bar 6a of the prior art, is narrower than the counter-cutting bar 6 according to the present embodiment, which is indicated by thick dashed lines. For this reason, the label beginning, which is located to the left of the counter cutting bar 6a, in the rows of staggered openings 65 are so that the beginning of the label can be held only in the central region of the label, while the outer region, that is, the edge region of the label Label beginning "loose" rests.

The upper counter cutting bar 6 in Fig. 4 The counter cutting bar 6 according to the present embodiment is wider than the counter cutting bar 6a of the prior art. As a result, the beginning of the label can be placed so that openings 66 in the counter-cutting bar 6 are in the outer region, that is to say the edge region of the label beginning. In this way, a greater width of the counter-cutting bar 6 can be used for cutting the label or the label tape as well as the edge area of the label beginning securely held on the platen 2. That is, according to the present embodiment, the cutting position at which the cutting element 3 contacts the counter cutting bar 6 when cutting the label is slidable on the counter cutting bar 6 because the counter cutting bar 6 is wider than the counter cutting bar 6a of the prior art.

In Fig. 4 the counter-cutting bar 6a is designed as a counter-cutting bar, which has a width of approximately 7 mm, while the counter-cutting bar 6 is designed as a counter-cutting bar with a width of approximately 13 to 14 mm. That is, the counter cutting bar 6 has approximately twice the width as the counter cutting bar 6a. In addition, the openings 66 in the counter-cutting bar 6 are designed such that the openings 66 in the counter-cutting bar 6 are located above the openings 65 in the surface of the counter-pressure roller 2. As a result, the openings 65 and 66 are connected in such a way that a label strip resting on the counter cutting strip 6 can be held against the counter cutting strip 6 when a negative pressure is generated by the counterpressure roller 2. How out Fig. 4 it can be seen that the openings 66 in the counter-cutting bar 6 are arranged in a row along the length of the counter-cutting bar 6 and in the middle of the width of the counter-cutting bar 6.

It should be noted that the counter cutting bar 6 is usually present on the entire width of the platen 2, and not as in Fig. 4 to illustrate the difference between the counter cutting strips 6 and 6a, only on half the width of the platen roller second

Fig. 5 shows a schematic plan view of a counter-pressure roller 2, wherein in the lateral surface of the platen 2, the counter cutting strips 61, 62, 63 and 64 parallel to the second axis of rotation B, that is, the axis of rotation of the platen 2, are introduced. The distance between the counter cutting strips 61, 62 and 63 to each other is chosen so that they along the circumference of the platen roller 2 are offset by an angle of 120 °. The fourth counter-cutting edges 64 are also introduced parallel to the second axis of rotation B in the lateral surface of the platen 2, wherein the fourth counter-cutting bar 64 is offset along the circumference of the platen 2 against the counter-cutting bar 61 by an angle of 180 °. With this arrangement of the counter-cutting bars 61 to 64 label lengths can be produced which correspond to the entire circumference, the three-quarter circumference, half the circumference or one third of the circumference of the platen 2. With this one counter-pressure roller 2 and the counter cutting strips 61 to 64 mounted therein, differently structured gripper cylinders 7 can be charged. The loadable gripper cylinders 7 may be those which either two corresponding to the circumference of the platen 2 labels, or three two-fold the circumference of the platen 2 corresponding, or four one and a half times the circumference of the platen 2 corresponding, or six times the Einrittelfachen circumference of the platen 2 can record appropriate labels.

In Fig. 5 For each counter cutting edge 61, 62, 63 and 64, the various widths of about 7 mm and about 13 to 14 mm are shown, and it is a label with beginning and end of the platen 2 indicated to the position of the label in the to clarify various broad bars. The narrow design of the counter cutting strips 61, 62, 63 and 64 according to the counter cutting strip 6a of Fig. 4 is in Fig. 5 designated by a *, whereas the wider version of the counter cutting strips 61, 62, 63 and 64 according to the counter cutting bar 6 of Fig. 4 , and thus according to the present embodiment, is in Fig. 5 denoted by dotted lines.

The displacement of the cutting position on the counter cutting bar 6 and the counter cutting strips 61, 62, 63 and 64, that is on the counter cutting bar according to the present embodiment with a width of about 12 to 18 mm and preferably 13 to 14 mm, can not by means of a are shown, which controls the cutting device 1. That is, the control device can control the rotational position of counterpressure roller 2 and cutting element 3 to each other. More specifically, the rotational position of counterpressure roller 2 and cutting element 3 to each other is set in an initial position of the cutting device 1 such that a cutting tool 4 of the cutting element 3 always strikes against a predetermined position of the width of the counter cutting strip 6 upon contact with a counter cutting bar 6.

According to this exemplary embodiment, the control device can control the cutting device 1 in such a way that an offset of the rotational position of the counterpressure roller 2 relative to this starting position of the cutting device 1 results in the rotational position of the cutting element 3.

This offset can be realized with a corresponding control of the servo drive devices of the counter-pressure roller 2 and the cutting element 3 by the control device.

It is also possible, the rotational movement of the platen roller 2 and the cutting element 3 offset in time, that is, one after the other, to control, so that the cutting element 3 relative to the conventional cutting device 1 moves slightly offset from the platen 2. The control device can make the control of the platen roller 2 in time after the cutting element 3 or it can also make the control of the cutting element 3 in time after the platen 2. That is, the cutting position at which the cutting element 3 contacts the counter cutting bar 6 when the label is cut is shifted from the label tape in the direction of the width of the counter cutting strip 6 before cutting a label.

In this way, in the present embodiment, the cutting position of the label of the label tape is no longer at the predetermined position of the width of the counter-cutting bar 6, for example in the middle of the width of the counter-cutting bar 6, but at a different position, that is, before or after the predetermined position As a result, an offset of the cutting position on the counter-cutting bar 6 can be achieved as needed, that is, depending on the existing label length.

Second Embodiment

The second embodiment is identical to the first embodiment except for the achievement of the displacement of the cutting position. Therefore, only the parts other than the first embodiment of the second embodiment will be described below. The same and equally important parts are provided with the same reference numerals.

According to the second embodiment, the displacement of the cutting position on the counter cutting bar 6 or the counter cutting strips 61, 62, 63 and 64 by means of the drive means 5 of the cutting element 3 or the drive means of the counter-pressure roller 2, not shown. That is, one of the drive means may at least temporarily change the peripheral speed of the member driven by it from the peripheral speed of the other member driven by the other drive means. In this way, an offset of the cutting position on the counter-cutting bar 6 can be achieved as needed, that is, depending on the existing label length.

In particular, for example, the drive device 5 changes the peripheral speed of the cutting element 3 at least temporarily with respect to the peripheral speed of the counterpressure roller 2. However, the drive device of the counterpressure roller 2, not shown, can change the peripheral speed of the counterpressure roller 2 at least temporarily relative to the peripheral speed of the cutting element 3.

(Third Embodiment)

The third embodiment is identical to the first embodiment except for the provision of the displacement of the cutting position. Therefore, only the parts other than the first embodiment of the third embodiment will be described below. The same and equally important parts are provided with the same reference numerals.

According to this embodiment, the cutting position is shifted by the drive means 5, the peripheral speed of the cutting element 3 with respect to the peripheral speed of the platen roller 2 temporarily slowed down or accelerated.

(Fourth Embodiment)

The fourth embodiment is identical to the first embodiment except for the provision of the displacement of the cutting position. Therefore, in the following, only the parts other than the first embodiment of the fourth embodiment will be described described. The same and equally important parts are provided with the same reference numerals.

According to this embodiment, the cutting position is shifted by the non-illustrated drive means of the platen roller 2, the peripheral speed of the platen roller 2 against the peripheral speed of the cutting element 3 slows or accelerates temporarily.

(Fifth Embodiment)

The fifth embodiment is identical to the first embodiment except for the provision of the displacement of the cutting position. Therefore, only the parts other than the first embodiment of the fifth embodiment will be described below. The same and equally important parts are provided with the same reference numerals.

According to this embodiment, the cutting position is shifted by the non-illustrated drive means of the platen roller 2, the supply speed of the label tape against the peripheral speed of the platen 2 and / or the peripheral speed of the cutting element 3 slows or accelerates temporarily.

In this case, for example, the peripheral speed of the cutting tool 4 in the rotating cutting element 3 may be equal to the peripheral speed of the counter-pressure roller 2.

However, if the circumferential speed of the counter-pressure roller 2 is not equal to the feed rate of the label tape, the transport of the label tape on the counter-pressure roller 2 is no longer frictionally but with slippage.

(General)

All of the above-described embodiments of the cutting device and the labeling device can be used individually or in all possible combinations. In particular, the following modifications are conceivable.

The execution of the width of the counter cutting strips 61, 62, 63 and 64 in Fig. 4 is modifiable such that all counter cutting strips 61, 62, 63 and 64 have the same width of about 12 to 18 mm and preferably about 13 to 14 mm or only one of them can have a width of about 12 to 18 mm and preferably about 13 to 14 mm. Depending on requirements, the width of the counter cutting strips 61, 62, 63 and 64 may also be greater, as long as the width of the counter cutting strips 61, 62, 63 and 64 is smaller than the length of the counter cutting strips 61, 62, 63 and 64 to the manufacturing cost of Counter cutting bar (s) and thus the cutting device is not unnecessarily increase.

The equipment of the cutting element 3 and the counter-pressure roller 2, each with its own drive has the advantage that as flexible as possible adapted to the present situation cutting process can be used. If e.g. the cutting element 3 has two cutting tools 4, but one is no longer usable by wear, so it is possible to rotate the cutting element 3 from one to the next cut by 360 °, so that the no longer usable cutting tool 4 is no longer used. This is advantageous because then a change of the cutting element 3 or the no longer useful cutting tool 4 can be made when the machine is serviced at a normal maintenance. Additional interruptions can thus be minimized to a necessary level.

According to a preferred modification of the invention, the peripheral speeds of the cutting element 3 and the counterpressure roller 2, which may well differ during one revolution, are adapted to one another in such a way that they are identical at the time of the cutting of the label. That is, the peripheral speed of the cutter element 3 or the platen roller 2 is slowed or accelerated temporarily before, but not during the cutting of, the label, relative to the peripheral speed of the other rotatable member.

The openings 65 in the counter-pressure roller 2 and the openings 66 in the counter-cutting bar 6 can be created for example by means of a bore or with a punching or milling tool. Although the openings 65 and 66 are shown in the figures as a round hole or round opening and any other type of opening is suitable, which the above-described function of the openings 65 in counter-pressure roller 2 and the openings 66 in Counter cutting bar 6 can meet, such as a slot, a triangular opening, a star-shaped opening, etc.

In a counter-pressure roller 2, which has a plurality of counter cutting strips 6, not all counter cutting strips 6 must have openings 66. However, it is advantageous if the counter cutting strips 6 are introduced into the lateral surface of the counterpressure roller 2 in such a way that they do not protrude from the roller surface or the lateral surface of the counterpressure roller 2 also has a flat outer surface with the countercut edges 6 introduced.

LIST OF REFERENCE NUMBERS

1

cutter

2

Backing roll

3

cutting element

4

cutting tool

5

Drive device of the cutting element

6

Counter element or counter cutting strip

7

gripper cylinder

8th

output star

9

exit conveyor

10

bottles

12

labeling

14

Label roll recordings

15

Anspleißstation

17

gluing unit

18

glue roller

22

guide arch

23

infeed worm

24

feeder conveyors

25

feed wheel

26

turntable

27

carousel

31

arrow

32

arrow

61, 62, 63, 64

Counter-cutting bars

65

Openings in counterpressure roller

66

Openings in counter cutting bar

A

first axis

B

second axis

Claims (15)

Cutting device (1) for cutting labels, with
a cutting element (3) for cutting a label tape provided with a plurality of labels arranged one behind the other in the direction of the length of the label tape, the cutting element (3) comprising a cutting tool (4) parallel to a first axis (A ) about which the cutting element (3) is rotatable,
a counter - pressure roller (2) for laying the label strip, wherein the counter - pressure roller (2) about a second axis (B) is rotatable, which is arranged parallel to the first axis (A), and at least one counter - cutting bar (6) which at the Lateral surface of the counter-pressure roller (2) is provided substantially parallel to the second axis (B),
wherein the at least one counter cutting bar (6) has a width perpendicular to the second axis (B) that is smaller than the length of the counter cutting bar (6) parallel to the second axis (B),
characterized in that
the at least one counter cutting bar (6) has a width such that the cutting position at which the cutting element (3) contacts the counter cutting bar (6) when the label is cut is displaceable on the counter cutting bar (6). Cutting device according to claim 1, wherein
the counterpressure roller (2) has a multiplicity of openings (65) in the lateral surface of the counterpressure roller (2) for generating a negative pressure in the counterpressure roller (2) when the openings (65) are at least partially covered by the label strip, and
the openings (65) in the counter-pressure roller (2) are arranged in a plurality of mutually parallel rows, which are arranged substantially perpendicular to the counter-cutting bars (6) on the surface of the counter-pressure roller (2). Cutting device according to claim 1 or 2, wherein at least one of the at least one counter-cutting bar (6) has a plurality of openings (66) which communicate with openings (65) in the surface of the counter-pressure roller (2) such that one on the counter-cutting bar (6) resting label strip is maintained at the counter cutting strip (6) when a negative pressure is generated by the counterpressure roller (2). The cutting device according to claim 3, wherein the plurality of openings (66) of the counter-cutting bar (6) are arranged in a row along the length of the counter-cutting bar (6) and substantially in the middle of the width of the counter-cutting bar (6). Cutting device according to claim 3 or 4, wherein the cutting device (1) is designed such that the cutting position on the counter-cutting bar (6) is displaceable such that the label start of a label on the label tape can be placed such that the plurality of openings (66 ) is arranged in the outer region of the label. Cutting device according to one of the preceding claims, wherein the cutting device is configured such that it is controllable by a control device which is designed for shifting the cutting position on the counter cutting strip (6) such that it determines the rotational position of counterpressure roller (2) and cutting element (3 ) to each other from an initial rotational position, in which a cutting tool (4) on contact with a counter cutting strip (6) of the counter-pressure roller (2) always impinges on a predetermined position of the width of the counter-cutting bar (6), offset in another rotational position to each other. Cutting device according to one of claims 1 to 5, wherein the cutting position is displaceable by a drive device, the at least temporarily changing a peripheral speed of at least one rotating element, which the cutting element (3) or the counter-pressure roller (2) is designed opposite the respective other rotating element. Cutting device according to one of claims 1 to 5, wherein the cutting position by a drive means (5) is displaceable, which is designed for at least temporarily slowing down the peripheral speed of the cutting element (3) relative to the peripheral speed of the counter-pressure roller (2). Cutting device according to one of claims 1 to 5, wherein the cutting position by a drive means (5) is displaceable, which is designed for at least temporary acceleration of the peripheral speed of the cutting element (3) relative to the peripheral speed of the counter-pressure roller (2). Cutting device according to one of claims 1 to 5, wherein the cutting position is displaceable by a drive device which is designed for at least temporarily slowing down the peripheral speed of the counter-pressure roller (2) relative to the peripheral speed of the cutting element (3). Cutting device according to one of claims 1 to 5, wherein the cutting position is displaceable by a drive device which is designed for at least temporary acceleration of the peripheral speed of the counter-pressure roller (2) relative to the peripheral speed of the cutting element (3). Cutting device according to one of claims 1 to 5, wherein the cutting position is displaceable by a drive device which is designed for at least temporarily changing the supply speed of the label tape relative to the peripheral speed of the counter-pressure roller (2) and / or the peripheral speed of the cutting element (3). Cutting device according to one of the preceding claims, wherein the counter cutting strip (6) has a width of 5 - 20 mm, preferably from 13 to 14 mm. Labeling device having a cutting device (1) according to one of the preceding claims and for attaching the labels cut by the cutting device (1) to articles to be provided with labels. A cutting method for cutting labels with a cutting element (3) which cuts a label strip provided with a plurality of labels arranged one behind the other in the direction of the length of the label strip into individual labels, the cutting element (3) comprising a cutting tool (4) in the first axis (A), around which the cutting element (3) is rotated, and wherein the cutting tool (4) when cutting the label strip, a counter cutting strip (6) of a counter-pressure roller (2) contacted, on which the label tape is placed, the counterpressure roller (2) is rotated about a second axis (B), which is arranged parallel to the first axis (A), and has at least one counter cutting strip (6), which on the lateral surface of the counterpressure roller (2) substantially parallel to the second axis (B) is provided, wherein the at least one counter cutting bar (6) has a width perpendicular to the second axis (B), which is smaller than the length of the Gegenschnei dleiste (6) is parallel to the second axis (B),
characterized in that
the cutting position at which the cutting element (3) contacts the counter-cutting strip (6) when the label is cut is cut to the width of the counter-cutting strip (6) before the label strip is cut into individual labels.

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