Label printer

Abstract

The invention relates to a labeler for applying labels to fruit or vegetables, comprising a label dispenser and a label applicator onto which the label dispenser can be mounted, wherein the label applicator includes a rotating head rotatably mounted in one direction of rotation with several receiving sections arranged equally in the circumferential direction, each of which is provided with a radially projecting bellows, wherein the respective receiving section and the respective bellows form a respective label receiver, wherein in operation the label receivers continuously pass through a label receiving rotary position, in which they receive a respective label from a label dispenser, and a label application rotary position, in which they apply the respective label to the fruit or vegetable.In the label pickup rotary position, the respective bellows is retracted, and in the label application rotary position, the respective bellows is extended. The label dispensing unit has a label sensor designed to detect whether a label pick-up moving into the label pickup rotary position is still holding the label it picked up during its previous pass at the label pickup rotary position.

Description

[0001] The invention relates to a labeling device for applying labels arranged on a carrier tape and wound onto a label roll to fruit or vegetables, comprising a label dispensing device and a label applicator onto which the label dispensing device can be mounted, wherein the label dispensing device includes a label roll holder and a driveable label transport device with a label dispensing edge, wherein the label applicator comprises a rotating head rotatably mounted in one direction of rotation with several, in particular five, receiving sections arranged equally distributed in the circumferential direction, each of which is provided with a radially projecting bellows, wherein the respective receiving section and the respective bellows form a respective label pick-up, wherein in operation the label pick-up continuously rotates into a label-pick-up position in which they pick up a respective label from the label dispensing edge.and a label application rotary position in which they apply the respective label to the fruit or vegetable, wherein in the label pickup rotary position the respective bellows is retracted and in the label application rotary position the respective bellows is extended, wherein the labels are held on the label pick-ups between the label pickup rotary position and the label pickup rotary position.

[0002] Fruit labelers apply small labels directly onto fruits such as apples, kiwis, avocados, or melons. The label applicator of the labeler has a rotating head equipped with several bellows-type label pick-ups along its circumference. In a label pick-up position, the label pick-ups receive a label from a label dispensing edge and, in a label application position, typically pointing downwards, release it onto the conveyed fruit. Such labelers are known, for example, from documents EP 3 019 406 B1 and EP 2 356 031 B1. Further labelers according to the preamble of claim 1 are known from documents US 2010 / 101731 A1 and WO 2017 / 165737 A1.

[0003] However, in practice, the application process sometimes malfunctions. This means that in the label application rotation position, a label is not applied to the fruit being conveyed, but remains attached to the label picker, which then carries the label along until it reaches the label pickup rotation position, where it is supposed to pick up a new label. This regularly leads to malfunctions of the labeler.

[0004] The invention is based on the objective of providing a labeller of the type mentioned above in which malfunctions caused by unapplied labels can be avoided.

[0005] This problem is solved by a labeler having the features of claim 1, and in particular by the fact that the label dispenser has a label sensor designed to detect whether a respective label pick-up entering the label pick-up rotary position still holds the label which it picked up at the label pick-up rotary position during its previous pass.

[0006] According to the invention, a label sensor is used to detect whether a label picker, to which a label is to be transferred in the label-receiving rotary position, is already labeled. If this is the case, appropriate measures can be initiated to prevent otherwise triggered malfunctions.

[0007] Advantageous embodiments of the invention are described in the dependent claims, the description and the drawing.

[0008] The labeler is designed to dispense labels intermittently in steps into the label pickup rotary position of the respective label holder during operation, whereby in each step the carrier tape is advanced by a distance corresponding to the sum of the label length and the distance between two consecutive labels on the carrier tape, whereby the carrier tape is always advanced by one step if the label sensor has not detected that the respective label holder is still holding the previous label, and whereby the advancement of the carrier tape by one step is suspended if the label sensor has detected that the respective label holder is still holding the previous label.If the label sensor detects that there is no problem due to an unapplied label, the next step is executed and the new label is dispensed into the label pick-up rotary position of the respective label holder. Otherwise, the next step is not executed, and it is assumed that the label holder still holding the previous label will apply it to a passing fruit at the label application rotary position during its next pass.

[0009] Furthermore, the labeler can be designed to interrupt operation and issue an error signal if the label sensor detects, during several, particularly three or five, consecutive passes of a label picker, that the picker is still holding the previous label. This is advantageous when a label remains attached to the picker despite multiple passes through the label application rotation position.

[0010] In particular, the labeler is designed to rotate the rotary head intermittently in steps during operation. At each step, the rotary head is rotated by an angle equal to the division of 360° by the number of label pick-ups, in particular 72°. After each step, one of the label pick-ups assumes the label pick-up position. The detection of whether the respective label pick-up still holds the previous label occurs when the respective label pick-up assumes this position. The rotary head then rotates not continuously, but incrementally. After each step, one of the label pick-ups is in the label pick-up position, in which the aforementioned detection is performed and in which the respective label pick-up is ready to pick up a label from the label dispenser.

[0011] The label applicator can include a motor for driving the label transport mechanism of the label dispenser and a control unit for controlling the motor driving the label transport mechanism. When the label dispenser is placed on the label applicator, a mechanical connection is automatically established between the motor driving the label transport mechanism and the label transport mechanism itself, as well as an electrical connection between the control unit and the label sensor, preferably via an electrical plug connection. No further measures are then required for driving the label transport mechanism or for communication with the label sensor.

[0012] Preferably, the label sensor is arranged in line with the respective label pickup position and the label dispensing edge, with the label dispensing edge being positioned between the label sensor and the respective label pickup position. This ensures that the label sensor has a clear view of the label pickup position.

[0013] The label sensor can be designed as a laser reflection light barrier. With such a sensor, a label located on a respective label holder can be reliably detected.

[0014] In particular, the label applicator includes a motor for driving the rotary head and a control unit for controlling the motor that drives the rotary head. Additionally, the label applicator may have a motor, controllable by the control unit, for driving the label transport mechanism of the label dispenser. If a motor for driving the label transport mechanism of the label dispenser is already provided on the label applicator side, a corresponding motor on the label dispenser side is not required.The control device for controlling the motor for driving the rotary head is the aforementioned control device for controlling the motor for driving the label transport device, and the motor controllable by the control device for driving the label transport device of the label dispenser is the aforementioned motor for driving the label transport device of the label dispenser.

[0015] The invention is described below by way of example with reference to the drawing. The drawing shows: Fig. 1 a labeling system with several labelers according to the invention arranged side by side and one behind the other, each labeler having a label applicator and a label dispensing device mounted on the label applicator, Fig. 2 a label applicator with a side panel and a rotary head, Fig. 2b the label applicator without a side panel, Fig. 2c the side panel in a longitudinal section, Fig. 3a an air distributor core of the label applicator, Fig. 3 a rotary head of the label applicator, Fig. 3c the air distributor core and the rotary head in an assembled state, Fig. 3 a cross-section along AA in Fig. 3c , Fig. 3 a cross-section along BB in Fig. 3c , Fig. 3 fine cross-section along CC in Fig. 3c , Fig. 4a a bellows, Fig. 4b a membrane for the bellows, Fig. 5a a label dispenser in a side view, Fig. 5b a label dispenser in a perspective view from below, Fig. 5c a label dispenser with a label sensor before being placed on the label applicator, Fig. 5 a roll arrangement of the label dispenser, and Fig. 6 a carrier tape.

[0016] Fig. 1 Figure 1 shows a labeling system with eight labelers 11 according to the invention arranged side by side and in two offset rows, each labeler 11 having a label applicator 13 and a label dispensing device 15 mounted on the label applicator 13. The labelers 11 are located above a conveyor belt 17, on which fruit is conveyed under the labelers 11, with each individual piece of fruit being labeled with a label 99 (see Figure 1). Fig. 6 The fruit is contained in a tray, arranged in several adjacent rows. Once a tray has passed under the labelers 11, the next tray can be fed to the labelers 11. The conveyor belt system 17 can also have several adjacent conveyor belt tracks along which the fruit is conveyed under the labelers 11. The presence of the fruit can be detected by a detector system, for example, using laser profilometry, to enable the application of the labels 99 to the fruit at precisely the right moment.

[0017] In the Fig. 2a und 2b The label applicator 13 is shown in detail with and without an elongated side panel 19. The label applicator 13 comprises a stationary cylindrical air distribution core 21 with a suction air connection 23 and a compressed air connection 25. Furthermore, the label applicator 13 comprises a rotating head 29 rotatably mounted on the air distribution core 21 in a direction of rotation 27. The rotating head 29 comprises five receiving sections 31 arranged equally in the circumferential direction, each of which is provided with a radially projecting bellows 33, the bellows being in Fig. 2b are omitted. The respective receiving section 31 and the respective bellows 33 form a respective label receiver 35.

[0018] The bellows 33 can be supplied with suction or compressed air via the air distribution core 21, depending on their respective rotational position. During operation of the labeler 11, the label pick-ups 35 continuously pass through a label-picking rotational position, in which they pick up a label 99 from a label dispensing edge 37 of the label dispensing unit 15 (see figure). Fig. 5a bis 5c ) take over and the ones in the Fig. 2a und 2b is assumed by the label pick-up 35-1 or the pickup section 31-1, and a label application rotary position in which they apply the respective label 99 to the fruit and which are in the Fig. 2a und 2b between the rotational positions of the two label pick-ups 35-3 and 35-4 or the two pickup sections 31-3 and 31-4. In the Fig. 3c bis 3f The label pickup 35-1 or the associated pickup section 31-1 is in the label application rotary position.

[0019] In the label pickup rotary position, the label receivers 35 are supplied with suction air and the respective bellows 33 are retracted. In the label application rotary position, the label receivers 35 are supplied with compressed air and the respective bellows 33 are extended. The use of the retractable, flexible bellows 33 prevents the fruit from being crushed during labeling. Between the label pickup and label application rotary positions, the labels are held in place by the label receivers 35.

[0020] As shown in the perspective view of the air distribution core 21 in Fig. 3a As shown, the suction air connection 23 and the compressed air connection 25 are arranged on one of the two end faces of the air distribution core 21. A suction air channel 39, extending along the cylinder axis of the air distribution core 21, connects to the suction air connection 23, and a compressed air channel 41, also extending along the cylinder axis of the air distribution core 21, connects to the compressed air connection 25. As can be seen from a comparison of the Fig. 3d, 3e and 3f As a result, the compressed air duct 41 extends deeper into the air distribution core 21 than the suction air duct 39.

[0021] As in Fig. 3a As further shown, the air distribution core 21 has a continuous groove 43 on its outer surface. The groove 43 extends circumferentially around the air distribution core 21 over an angular range of approximately 320°. A total of six radially extending suction air lines 45 lead from the suction air duct 39 (see figure). Fig. 3d ) to the groove 43. The suction air lines 45 are arranged in a common plane oriented perpendicular to the suction air duct 39. The groove 43 is connected to the suction air connection 23 via the suction air lines 45. A radially extending compressed air line 47 leads from the compressed air duct 41 (see figure). Fig. 3f ) to an opening 49 in a groove-free area of ​​the outer surface of the air distribution core 21.

[0022] As from Fig. 3b As can be seen, the recording sections 31 of the rotary head 29 each have a passage 51 (cf. Fig. 3e ) for connecting the respective label holder 35 to the suction air connection 23 and a passage 53 (see Fig. 3f ) for connecting the respective label holder 35 to the compressed air connection 25. The passage 53 for connection to the compressed air connection 25 is located deeper in the air distribution core 21 than the passage 51 for connection to the suction air connection 23.

[0023] Overall, this ensures that in a rotational position of the rotary head 29, in which the label pick-up 35-1 or the associated receiving section 31-1 assumes the label application rotational position, it is connected to the compressed air connection 25 (see Fig. 3f ), all other label pick-up devices 35-2, 35-3, 35-4, 35-5 or associated pick-up section 31-2, 31-3, 31-4, 31-5, however, with the continuous groove 43 (see Fig. 3e ) and are connected to the suction air connection 23 via the continuous groove 43. The label pick-ups 35 are not connected to the continuous groove 43 only in a region from just before to just after the label application rotation position. In particular, in the rotation position of the rotary head 29, this extends according to the Fig. 3c bis 3f The groove 43 extends beyond the rotational position of the receiving section 31-2 in the direction of rotation and beyond the rotational position of the receiving section 31-5 in the opposite direction of rotation. This allows the labels 99 to be reliably transferred from the label receiving rotational position to the label application rotational position. The air distribution core 21 and the rotary head 29 are each designed as 3D-printed parts, as this facilitates the production of the air distribution structure described above.

[0024] The side cheek 19 shows according to Fig. 2c The unit has two opposing ends. At one end, a connection 55 for a suction air hose and a connection 57 for a compressed air hose are provided. Within the side wall 19, two chambers 59 and 61 are formed, running parallel to each other from one end to the other. At the other end, a suction air outlet 63, connected to the suction air connection 23 of the air distribution core 21, and a compressed air outlet 65, connected to the compressed air connection 25 of the air distribution core 21, are provided. Chamber 59 is connected to the connection 55 for a suction air hose and the suction air outlet 63, and chamber 61 is connected to the connection 57 for the compressed air hose and the compressed air outlet 65.

[0025] The label applicator 13 includes a motor 67 to drive the rotary head 29. The drive is provided via a belt drive 69. The motor 67 is controlled by a control unit (not shown). Furthermore, the label applicator 13 has a motor 71, controllable by the control unit, for lateral adjustment of the label applicator 13 on a frame along the axis of rotation of the rotary head 29, and a motor 73, controllable by the control unit, for driving a label transport device 75 (see figure). Fig. 5a bis 5d ) the label dispenser 15. All motors 67, 71, 73 are arranged in a row along the longitudinal extent of the side wall 19.

[0026] The bellows 33 are each made of silicone and each has several air openings 77 at their end facing away from the rotating head 29 (see figure). Fig. 4a Furthermore, an internal, air-permeable membrane 79 is provided (see Fig. 4b ), which covers the air openings 77 when compressed air is applied and exposes the air openings 77 when suction air is applied. At their end facing the rotating head 29, the bellows 33 are force-fitted over the receiving sections 31 by radial stretching.

[0027] The label dispenser 15, which is located in the Fig. 5a bis 5d The assembly, as shown in more detail, comprises a label roll holder 81 for holding the labels 99 wound onto a label roll, and the driveable label transport device 75 with the label dispensing edge 37.

[0028] When the label dispenser 15 is placed on the label applicator 13, four bolts 83 provided on the label dispenser 15 engage in corresponding bolt receptacles 85 formed in the label applicator 13 (see figure). Fig. 2a ) one. In addition, a double swivel bolt 87, pre-tensioned to a locking position, is provided on the label dispenser 15, which engages a corresponding bolt receptacle 89 formed in the label applicator 13. This allows the label dispenser 15 to be firmly mounted on the label applicator 13.

[0029] Furthermore, when the label dispenser 15 is placed on the label applicator 13, a drive-effective mechanical connection is automatically established between the motor 73 for driving the label transport device 75 and the label transport device 75. This drive-effective mechanical connection is achieved via a spur gear 91 of the label applicator 13, which is driven by the motor 73 (see figure). Fig. 2a und 2b ), which, in the installed state, meshes with a spur gear 93 of the label transport device 75.

[0030] Furthermore, the distance between the rotary head 29 and the label dispensing edge 37 is adjustable. For this purpose, the label applicator 13 has a pivoting adjustment plate 95 on its upper side, onto which the label dispensing device 15 is placed and whose tilt angle can be adjusted via an adjusting screw 97 (see figure). Fig. 2a ).

[0031] The carrier tape 101 transported by the label transport device 15, on which the labels 99 are arranged, is a two-part carrier tape 101 which is held together by the labels 99 (see figure). Fig. 6 ).

[0032] The label transport device 75 is designed to feed the two-part carrier tape 101 to the label dispensing edge 37 via a driven roller assembly 103, to deflect it sharply at the label dispensing edge 37, thereby splitting the carrier tape 101 centrally into two carrier tape halves 109, and to return the two carrier tape halves 109 laterally to the roller assembly 103. The label dispensing edge 37 is V-shaped to facilitate this operation. The path 111 traveled by the carrier tape 101 or the carrier tape halves 109 is in Fig. 5a illustrated by a dotted line.

[0033] The role arrangement 103 includes (see Fig. 5d The label applicator 13 comprises a central label tape roll 105 for transporting the carrier tape 101 running towards the label dispensing edge 37 and two outer return rollers 107 for transporting the two returned carrier tape halves 101. The two outer return rollers 107 have a larger diameter than the central label tape roll 105. Furthermore, the three rollers 105, 107 are mounted non-rotatably on a common axle. The two return rollers 107 are partially provided with external teeth 113, with one of the two return rollers 107 simultaneously forming the second spur gear 93, which, in its assembled state, meshes with the first spur gear 91 of the label applicator 13, which is driven by the motor 73. This provides the drive for the roller assembly 103 and thus for the label transport device 75.

[0034] Each of the two return rollers 107 is paired with two spring-loaded counter-pressure rollers 115. The two carrier tape halves 109 are guided between their respective return rollers 107 and the two counter-pressure rollers 115, pulling on the two returned carrier tape halves 109. Due to their larger diameter, the two lateral return rollers 107 pull the two returning carrier tape halves 109 at a slightly higher speed than the central label tape roller 105 transports the forward carrier tape 101. This results in a tightening of the carrier tape 101. To smooth out the resulting slippage between the label tape roller 105 and the carrier tape 101, the label tape roller 105 is provided with several circumferential rubber rings 117 on its outer surface.

[0035] Furthermore, the label dispenser 15 is equipped with a label sensor 119 arranged above the label dispenser edge 37 (see figure). Fig. 5a bis 5c ), which is designed, for example, as a laser reflection light barrier. In Fig. 5c One front side panel of the label roll holder 81 has been omitted, making the label sensor 119 more visible. The label sensor 119 is positioned approximately in line with the label dispensing edge 37 and a label pick-up 35 located below the label dispensing edge 37, which is in its respective label-pick-up rotation position. The label sensor 119 is designed to detect whether a label pick-up 35, as it moves into its label-pick-up rotation position, is still holding the label 99 that it picked up at the label-pick-up rotation position during its previous pass. The label sensor 119 helps prevent malfunctions of the labeler 11.

[0036] In the operation of the labeler 11, the labels 99 are dispensed intermittently in steps into the label receiving rotary position of the respective label pick-up unit 35. At each step, the carrier belt 101 is advanced by a distance that corresponds to the sum of the label length I and the distance a between two consecutive labels 99 on the carrier belt 101 (see figure). Fig. 6 The carrier belt 101 is advanced by one step whenever the label sensor 119 has not detected that the respective label pick-up 35 is still holding the previous label 99. However, if the label sensor 119 has detected that the respective label pick-up 35 is still holding the previous label 99, the advancement of the carrier belt 101 is paused by one step and no new label 99 is dispensed into the label pick-up rotary position. The affected label pick-up 35 can then apply the old label 99 to a passing fruit at the label application rotary position during its next pass.

[0037] If the label sensor 119 detects, during several consecutive passes (e.g., three or five), that a label picker 35 is still holding an old label 99, the operation of the labeler 11 is interrupted and an error signal is issued. Manual intervention by an operator or service personnel is then required.

[0038] The rotary head 29 is also rotated intermittently in steps. At each step, the rotary head 29 is rotated by an angle corresponding to the division of 360° by the number of label pick-ups 35, in this case, 72°. After each step, one of the label pick-ups 35 assumes the label pick-up position. The label pick-ups 35 thus pause, at least briefly, in the label pick-up position. The detection of whether a particular label pick-up 35 is still holding an old label 99 takes place in the label pick-up position. In contrast, the label pick-ups 35 do not pause in the label application position but continue through it while each step is executed.

[0039] To connect the label sensor 11 to the control unit of the label applicator 13, the label applicator 13 has a plug 121 and the label dispenser 15 has a socket 123. When the label dispenser 15 is placed on the label applicator 13 as described above, an electrical connection between the control unit and the label sensor 119 can be automatically established – in addition to the drive-effective mechanical connection – so that the control unit can control the intermittent operation of the label transport unit 75 depending on the respective output signal of the label sensor 119. Bezugszeichenliste

[0040] 11 Labeler 13 Label applicator 15 Label dispenser 17 Conveyor belt 19 Side panel 21 Air distributor core 23 Suction air connection 25 Compressed air connection 27 Direction of rotation 29 Rotary head 31 Pickup section 33 Bellows 35 Label pick-up 37 Label dispenser edge 39 Suction air duct 41 Compressed air duct 43 Groove 45 Suction air line 47 Compressed air line 49 Opening 51 Passage 53 Passage 55 Connection 57 Connection 59 Chamber 61 Chamber 63 Suction air outlet 65 Compressed air outlet 67 Motor 69 Belt drive 71 Motor 73 Motor 75 Label transport device 77 Air opening 79 Membrane 81 Label roll holder 83 Bolt 85 Bolt receptacle 87 Swivel latch device 89 Bolt holder 91 Spur gear 93 Spur gear 95 Adjustment plate 97 Adjusting screw 99 Label 101 Carrier tape 103 Roller assembly 105 Label tape roller 107 Return roller 109 Carrier tape half 111 Path 113 External toothing 115 Counter-pressure roller 117 Rubber ring 119 Label sensor 121 Plug 123 Socket I, a Length, Distance

Claims

1. A labeler for applying labels (99) arranged on a carrier tape (101) and wound onto a label roll to fruit or vegetables, comprising a label dispensing device (15) and a label applicator (13) onto which the label dispensing device (15) can be placed, wherein the label dispensing device (15) comprises a label roll holder (81) and a drivable label transport device (75) having a label dispensing edge (37), wherein the label applicator (13) comprises a rotary head (29) rotatably supported in a rotational direction (27) and having a plurality of, in particular five, reception sections (31) arranged uniformly distributed in the circumferential direction, each of which is provided with a radially projecting bellows (33), wherein the respective reception section (31) and the respective bellows (33) form a respective label pick-up device (35), wherein, during operation, the label pick-up devices (35) continuously pass through a label pick-up rotational position, in which they pick up a respective label (99) from the label dispensing edge (37), and a label application rotational position, in which they apply the respective label (99) to the fruit or vegetable, wherein the respective bellows (33) is retracted in the label pick-up rotational position and the respective bellows (33) is extended in the label application rotational position, wherein the labels (99) are held at the label pick-up devices (35) between the label pick-up rotational position and the label application rotational position, characterized in that the label dispensing device (15) comprises a label sensor (119) which is designed to detect whether a respective label pick-up device (35) entering the label pick-up rotational position still holds the label (99) that it picked up during its previous pass through the label pick-up rotational position, wherein the labeler (11) is designed to feed the labels (99) intermittently in steps into the label pick-up rotational position of the respective label pick-up device (35) during operation, wherein, at each step, the carrier tape (101) is advanced by a distance corresponding to the sum of the label length (I) and the spacing (a) between two consecutive labels (99) on the carrier tape (101), wherein the carrier tape (101) is advanced by one step whenever the label sensor (119) has not detected that the respective label pick-up device (35) is still holding the previous label (99), and wherein the advancement of the carrier tape (101) by one step is suspended when the label sensor (119) has detected that the respective label pick-up device (35) is still holding the previous label (99).

2. A labeler according to claim 1, characterized in that the labeler (11) is designed to interrupt operation and output an error signal if the label sensor (119) has detected, during multiple, in particular three or five, consecutive passes of a label pick-up device (35), that the label pick-up device (35) still holds the previous label (99).

3. A labeler according to one of the preceding claims, characterized in that the labeler (11) is designed to rotate the rotary head (29) intermittently in steps during operation, wherein, at each step, the rotary head (29) is rotated by an angle corresponding to the division of 360° by the number of label pick-up devices (35), in particular 72°, wherein, after each step, one of the label pick-up devices (35) assumes the label pick-up rotational position, wherein the detection of whether the respective label pick-up device (35) still holds the previous label (99) takes place when the respective label pick-up device (35) assumes the label pick-up rotational position.

4. A labeler according to one of the preceding claims, characterized in that the label applicator (13) comprises a motor (73) for driving the label transport device (75) of the label dispensing device (15) and a control device for controlling the motor (73) for driving the label transport device (75), wherein, upon placing the label dispensing device (15) onto the label applicator (13), both a drive-effective mechanical connection between the motor (73) for driving the label transport device (75) and the label transport device (75) and an electrical connection between the control device and the label sensor (119) is automatically established, preferably via an electrical plug-in connection (121, 123).

5. A labeler according to any of the preceding claims, characterized in that the label sensor (119) is arranged in alignment with the respective label pick-up device (35) assuming the label pick-up rotational position and the label dispensing edge (37), wherein the label dispensing edge (37) is arranged between the label sensor (119) and the respective label pick-up device (35) assuming the label pick-up rotational position.

6. A labeler according to any one of the preceding claims, characterized in that the label sensor (119) is designed as a laser reflection light barrier.

7. A labeler according to any of the preceding claims, characterized in that the label applicator (13) comprises a motor (67) for driving the rotary head (29) and a control device for controlling the motor (67) for driving the rotary head (29), wherein preferably the label applicator (13) additionally comprises a motor (73) controllable by the control device for driving the label transport device (75) of the label dispensing device (15).

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