CONTAINER LABELING MACHINE.

Abstract

A container labeling machine comprising conveyor means (3) for transporting containers (4) to be labeled along a feed path and at least one labeling station (5) arranged along the feed path of the containers (4); the labeling station (5) comprises an unwinding unit (8) for a labeling strip (7) wound on a reel and a cutting drum (9), which is designed to receive, so as to adhere to its lateral surface, the labeling strip (7) fed by an unwinding unit (8) and which supports at least one cutting device (10) which can be activated, by means of drive means, to cut the labels (6) to be transferred to the containers (4); the cutting device (10) comprises a respective suction chamber (11) which is open in the outer lateral surface of the cutting drum (9) and which receives at least one blade (12);The suction chamber (11) may be connected to the air suction means (13); a diagnostic device is also provided to diagnose the correct operation of the cutting device (10) with detection means to detect at least one parameter correlated with the pressure present in the suction chamber (11).

Description

CONTAINER LABELING MACHINE DESCRIPTIVE MEMORANDUM OF THE INVENTION The present invention relates to a container labeling machine. As is known, labeling machines generally have a conveyor belt for the containers to be labeled, which is normally made up of a rotating carousel that has, peripherally, a plurality of supports, each of which is designed to receive an individual container from an incoming carousel and to rotate it around its own axis. Around the carousel there is at least one labeling station, which has a transfer drum that rotates in step with the carousel and makes it possible to apply a respective label to the containers that are in transit on the carousel, once the label has been previously cut from a continuous labeling strip, on which the labels to be applied are printed consecutively and which is taken from a reel by means of an unwinding unit. The labeling tape can be of the type that has pre-applied adhesive, that is, when wound on a reel it may already have a layer of adhesive pre-applied on the side of the labels that is designed to be in contact with the containers, or it may not have a pre-applied adhesive and, in that case, the labeling machine is provided with a unit to apply the adhesive to the labels before they are transferred to the containers. Specifically, the machines are known in that the cutting drum is interposed between the unwinding unit and the transfer drum, which is designed to receive, on its lateral surface, the labeling strip taken by the unwinding unit, and is designed to cut the individual labels that are transferred to the transfer drum so that they can be transferred to the containers. Specifically, the transfer drum is divided along its circumferential length into sectors or divisions, each of which is adapted to receive a single label from the cutting drum. The cutting drum may be provided with one or more blades attached to it, which cut the labeling strip between one label and the next, in cooperation with a fixed blade that is integral with the machine's support structure. Labeling machines are also known because the cutting drum also acts as the transfer drum. iffi> Ln / zznz / E / YiAi In the event that the drum is called a cutting and transfer drum, and receives, so that it adheres to it by virtue of suction ports on its side surface, the labeling strip and cuts it by means of the blades associated with the drum, to then transfer the individual labels, separated after being cut, to the corresponding container transported by the carousel. Disclosure No. EP2091822 on behalf of this same applicant discloses a cutting and transfer drum that is provided with a plurality of blades, which are mutually separated along circumferential portions substantially equal in extension to the length of the labels, and which can be driven to move individually by drive cylinders, to cut the labeling strip in the region of separation between the labels. By means of Italian patent no. 102016000128413, again in the name of this same applicant, a labeling machine is also known in which there is a cutting drum, which is designed to receive on its lateral surface, the labeling strip that is fed by means of the unwinding unit, and which is provided, around its lateral surface, with a plurality of cutting devices, each comprising a blade, which is integrally fixed to the cutting drum and is received in a corresponding suction chamber, which is open in the lateral surface of the transfer drum and is connected to air suction means, which makes it possible to attract the labeling strip into the chamber to push it back against the blade, resulting in the cutting of the same. One problem encountered with the use of labeling machines is that, due to the progressive wear of the cutting drum blades, it becomes difficult to cut the labeling strip correctly over time. For this reason, periodic inspections are scheduled to verify the correct operation of the cutting drum, which is carried out normally when starting the machine, and the blades are periodically replaced. In conventional labeling machines, the verification of the correct operation of the cutting drum is entrusted to the supervision of an operator who checks whether the labels are cut uniformly by the cutting drum during the operation of the machine or, in any case, to a visual examination of the condition of the blades before starting the machine. When the machine is in operation, these procedures do not facilitate the rapid identification of situations that may arise in which the cutting drum operates irregularly. ιμ> ίη / ζζηζ / Ε / γίΛΐ The objective of the present invention is to provide a labeling machine capable of improving the prior art in one or more of the aforementioned aspects. To this end, an object of the invention is to provide a labeling machine that makes it possible to constantly keep the correct operation of the cutting drum under control. Another object of the invention is to provide a labeling machine that offers the possibility of identifying anomalies in real time during the execution of the cut by means of the individual blades of the cutting drum. Another object of the present invention is to provide a labeling machine that is capable of offering the broadest guarantees of reliability and safety in this operation. Another object of the present invention is to overcome the drawbacks of the prior art in a manner that is an alternative to any existing solutions. Another object of the invention is to provide a labeling machine that is relatively easy to provide and can be produced at low cost, as well as being competitive from a purely economic point of view. This purpose and these and other objects that will be more evident below, are achieved by means of a container labeling machine according to claim 1, optionally provided by one or more of the features of the dependent claims. Other features and advantages of the invention will become more apparent from the description of preferred, but not exclusive, embodiments of the labeling machine according to the invention, which are illustrated in the accompanying drawings for the purpose of providing a non-limiting example, in which: Figure 1 is a schematic plan view from the top of the machine, according to the invention; Figure 2 is a plan view from above of another possible embodiment of the machine according to the invention. Figure 3 is a cross-sectional view, taken along a diametric plane, of a cutting drum of the machine according to the invention; Figure 4 is a cross-sectional view, taken along a diametric plane, of the cutting drum, in another possible embodiment of the machine according to the invention; Figure 5 is a cross-sectional view of the cutting drum, taken along a plane perpendicular to its axis of rotation, in a step prior to cutting a labeling strip; Figure 6 is a view of the cutting drum similar to that in Figure 5 in a step immediately after the cutting of the labeling strip. iffi> Ln / zznz / E / YiAi With reference to the figures, the container labeling machine according to the invention, generally designated by reference number 1, comprises conveyor means 3 for transporting, along a forward path, containers 4 to be labeled and at least one labeling station 5, which is arranged along a forward path of the containers 4 and is designed to apply a respective label 6 to the containers 4, which is obtained by cutting a labeling strip 7 wound on a reel, on which a plurality of labels 6 are successively printed. Specifically, the conveyor means 3 are conveniently constituted by a carousel 3a, which is driven in rotation around its own axis and is peripherally provided with rotating supports 3b, on each of which an individual container 4 is placed. The labeling station 5 comprises, in turn, an unwinding unit 8 for the labeling strip 7 and a cutting drum 9 that can be rotated around its own axis and is designed to receive, so that it adheres to the outer side surface thereof, the labeling strip 7 fed by the unwinding unit 8. Specifically, the cutting drum 9 supports at least one cutting device 10 which can be activated, by the drive means, to carry out the cutting of the labels 6 to be transferred to the containers 4 that travel on the conveyor means 3. Optionally, the cutting drum 9 can also have two or more cutting devices 10, arranged to be mutually and angularly separated, around the axis of the cutting drum 9. The extension of the circumferential portion of the cutting drum 9 between two consecutive cutting devices 10 may be equal to at least the length of the individual labels 6. More specifically, each cutting device 10 comprises a respective suction chamber 11 that is open on the outer side surface of the cutting drum 9 and that receives, inside, at least one blade 12. The suction chamber 11 can be connected with suction means 13 to apply an attraction on the labeling strip 7 towards the inside of the suction chamber 11, to push the labeling strip 7 against the blade 12 and cut it, as shown schematically in figures 4 and 5. According to the invention, the machine comprises a diagnostic device for diagnosing the correct operation of the cutting devices 10 of the cutting drum 9, which is provided with detection means for detecting at least one parameter correlated with the pressure present in the suction chamber 11 of the cutting devices 10. Advantageously, the diagnostic device comprises an electronic control unit 14 whose input is connected to the aforementioned detection means and which is adapted to compare the value of the parameter detected by means of the detection means with a previously established theoretical value of the same parameter. Advantageously, the electronic control unit 14 is designed to act, less a tolerance margin that can be previously established, on the air suction means 13 in the presence of a difference between the parameter value detected by the detection means and the previously established theoretical value of the parameter, to return the detected parameter value to the previously established theoretical value. In more detail, the aforementioned detection means comprise measuring means 15 that make it possible to measure the pressure present in the suction chamber 11 of, or of each, cutting device 10, at least when the suction chamber 11 is connected to the suction means 13. In this case, the control unit 14 makes it possible to determine the trend over time of the pressure detected by means of the pressure measuring means 15 within the suction chamber 11 and to compare it with a theoretical trend expected over time of the pressure within the pressure chamber 11 under normal operating conditions of the cutting devices 10. Also, in this case, the electronic control unit 14 is also capable of acting on the suction means 13 to instruct a variation of the air flow rate extracted by the suction means 13, after the detection, by means of this electronic control unit, of a difference, less the previously established tolerance margin, between the trend over time of the pressure detected by the pressure measuring means 15 and the theoretical trend expected over time within the suction chamber 11. It should be mentioned that, if the cutting drum 9 is provided with two or more cutting devices 10, there may be respective pressure measuring means 15 for each of the cutting devices 10. Also, if the cutting drum 9 is provided with two or more cutting devices 10, the electronic control unit 14 will be able to determine the trend over time of the detected pressure for each of the cutting devices 10 and by means of the corresponding pressure measuring means 15 within the respective suction chamber 11 and to compare the trend over time of the detected pressure with the expected theoretical trend over time. With reference to the modality shown in the figures, the suction means 13 comprise a fixed vacuum distribution unit 16 on which the cutting drum 9 is rotatably mounted and on which at least one vacuum chamber 17 is defined which is connected to a vacuum pump 18. The vacuum chamber 17 has a communication opening 19 defined on the face of the fixed distribution unit 16 that is directed towards the cutting drum 9. The suction chamber 11 of the, or of each, cutting device 10 of the cutting drum is, in turn, connected to the connection opening 20 which is defined on the face of the cutting drum 9 which is oriented towards the fixed distribution unit 16. Thus, during the rotation of the cutting drum 9 with respect to the fixed distribution unit 16, when the connection opening 20 of each cutting device 10 passes in front of the communication opening 19 of the vacuum chamber 17, the corresponding suction chamber 11 is placed in communication with the vacuum pump 18. As shown in the figures, according to the modality shown, the measuring means 15 may consist of at least one pressure sensor 15a, which is arranged inside the vacuum chamber 17 of the fixed distribution unit 16. Optionally, the electronic control unit 15 may also instruct the activation of the signaling means 21, which are capable of emitting a warning signal, for example, of an acoustic and / or visual type, after the detection by the electronic control unit 14, for at least one of the cutting devices 10, of a difference, less the previously established tolerance margin, between the trend over time of the pressure detected within the corresponding suction chamber 11 by means of the pressure measuring means and the expected trend over time. For the sake of completeness, it should be mentioned that the cutting drum 9 can be designed to directly transfer the labels 6 obtained after cutting onto a respective container 4 transported by means of transportation 3 to act, in practice, as a cutting and transfer drum, as shown in Figure 1. In this case, each cutting device 10 can be related to a respective slide 22 that is integral with the cutting drum 9 and is mounted projecting from the remaining portion of the outer side surface of the cutting drum 9 to allow the application of two adhesive tapes 23a and 23b, respectively, to the rear and front ends of two consecutive labels 6 on the labeling strip 7, by means of an applicator roller 24 that is arranged in a position adjacent to the cutting drum 9 before the labeling strip 7 is cut by the corresponding cutting device 10. Also in this case, the slider 22 of each cutting device 10 is positioned in front of the corresponding cutting device 10 and there are means for controlling the machine that are adapted to actuate the unwinding unit 8 to instruct, after applying the two adhesive tapes 23a, 23b by means of the applicator roller 24 onto two consecutive labels 6 resting on one of the sliders 22, a slowing of the feed speed of the labeling strip 7 with respect to the peripheral speed of the cutting drum 9 to bring the cutting device 10 located behind the slider 22, on which the two consecutive labels 6 were placed, towards the portion of the labeling strip 7 interposed between the two adhesive tapes 23a and 23b on which the cutting is to be performed. Alternatively, as shown in reverse in Figure 2, the cutting drum also transfers the labels 6 obtained after being cut to the transfer drum 25, which is adapted to successively bring the labels 6 received from the cutting drum 9 into contact with a respective container 4 transported by the means of transport 3. In this case, the transfer drum 25 is subdivided peripherally, as is known in itself, into multiple mutually separate sectors that are designed in each case to receive a respective label 6 and that have a circumferential extension of a length substantially equal to the length of the labels. Each sector of the transfer drum 25 has, at the ends, two slides 22 that project outwards from the remaining part of the lateral surface of the transfer drum 25 to allow an adhesive applicator roller 24, adjacent to the transfer drum 25, to apply the adhesive to the ends of the labels 6. According to the invention, the operation of the machine is as follows. With reference to the modality of figure 1, in a first step, the labeling strip 7 is fed by the unwinding unit 8 to the cutting drum 9 at a first speed that is substantially equal to the peripheral speed of the cutting drum 9, and is held attached to the side surface of the cutting drum 9 with the front and rear ends of the two consecutive labels 6 resting on one of the sliders 22. When the slider 22, on which the front and rear ends of the two consecutive labels 6 rest, passes in front of the applicator roller 24, the latter applies the adhesive tapes 23a and 23b onto the front and rear ends of the two labels 24, respectively. In a second step, the machine control means instruct the unwinding unit 8 to feed the labeling strip 7 to the cutting drum 9 at a second speed lower than the first feed speed so that the cutting device 10 arranged behind the slider which, in the first step, passed in front of the applicator roller 24, is carried, after a slide of the cutting drum 9 over the labeling strip 7, towards the portion of the labeling strip 7 interposed between the two adhesive tapes 23a and 23b applied by the applicator roller 24. ιμ> ίη / ζζηζ / Ε / γίΛΐ In a third step, the machine control means instruct the unwinding unit 8 to feed the labeling strip 7 back in at the first speed so that the cutting device 10 and the portion of the labeling strip 7 interposed between the adhesive tapes 23a, 23b move in sync with each other. In a fourth step, the cutting device 10 arranged in the portion of the labeling strip 7 interposed between the two adhesive tapes 23a and 23b reaches the angular position in which the connection opening 20 of the corresponding suction chamber 11 is opposite the communication opening 19 of the vacuum chamber 17 of the vacuum distributor 16, to establish a connection between the corresponding suction chamber 11 and the suction means 13, and the portion of the labeling strip 7 interposed between the two adhesive tapes 23a, 23b is therefore sucked into the suction chamber 11 and brought against the blade 12 that cuts it. After the labeling strip 7 has been cut, the machine control means instruct the unwinding unit 8 to feed the labeling strip 7 to the cutting drum 7 at the second speed so that the cut label 6 moves away from the rest of the labeling strip 7 and, at the same time, obtain the position of the next slider 22 between the next two consecutive labels 6 of the labeling strip 7. As soon as the next slider 22 has been placed between the next two consecutive labels 6 of the labeling strip 7, the control means instruct the unwinding unit 8 to feed the labeling strip 7 to the cutting drum 9 at the first feed speed so that, while the cutting drum 9 continues its rotation around the axis, it carries the cut label 6 to the corresponding container 4 which is transported by the conveying means 3, the portion of the labeling strip 7 resting on the slider 22 can reach the applicator roller 24 so that the operating cycle of the machine can be re-established. With reference to the modality of figure 2, the unwinding unit 8 feeds the labeling strip 7 to the cutting drum 9 at a speed synchronized with the peripheral speed of the cutting drum 9, so that the cutting drum 9 can receive the labeling strip 7, keeping it adhered to the lateral surface thereof, with the portion of the labeling strip 7 interposed between two consecutive labels 6 placed on a cutting device 10 of the cutting drum 9. When the cutting device 10 reaches the angular position in which the connection opening 20 of the suction chamber 11 thereof is opposite the communication opening 19 of the vacuum chamber 17 of the vacuum distributor 16, the suction chamber 11 of the cutting device 10 is placed in connection with the suction means 13 so that the portion of the labeling strip 7 interposed between the two consecutive labels 6 is attracted towards the chamber ιμ> ίη / ζζηζ / E / γίΛΐ within the suction chamber 11 and brought against the blade 12 that cuts it. In this way, the label 6 cut by the labeling strip 7 is transferred after the cutting drum 9 to the transfer drum 25, which receives it in a corresponding sector when the front and rear ends of the label 6 rest on the corresponding sliders 22. Continuing in this rotation, the transfer drum 25 then carries the label 6 in front of the applicator roller 24, which applies the respective adhesive tapes to the front and rear ends of the label 6 and then to the conveying means 3 so that the label can be transferred to the corresponding container 4. During the machine's operating cycle in its various modes, the diagnostic device analyzes the pressure trend in the suction chamber 11 of each cutting device 10, at least each time, the corresponding connection opening 20 is located in front of the communication opening 19 of the fixed distribution unit 16 to detect any anomalies in operation. In particular, whenever the connection opening 20 of the suction chamber 11 of each cutting device is in front of the communication opening 19 of the vacuum chamber 17, the pressure sensor 15a sends its signal to the electronic control unit 14 which calculates the trend over time of the pressure detected by the pressure sensor 15a and compares it with the expected theoretical pressure trend. Pressure detection by means of pressure sensor 15a and transmission of the detected value to the electronic control unit 14 can optionally also occur when the connection opening 20 of the suction chamber 11 of the individual cutting devices 10 is not in front of the communication opening 19 of the vacuum chamber 17. Thanks to the comparison received by the electronic control unit 14, the trend over time of the pressure detected by the pressure sensor 15a with the expected theoretical trend, the diagnostic device can identify the presence of anomalies in the operation of the machine, such as, for example, leaks in the vacuum seal between the fixed distribution unit 16 and the cutting drum 9, the loss of airtightness between the parts of the cutting devices 10, the misalignment of the labeling strip 7 with the suction chambers 11 of the cutting devices 10 before carrying out the cut, resulting in the loss of vacuum between the labeling strip 7 and the suction chamber 11, the reduction in the cutting efficiency of the blade 12. Specifically, a difference is found by the electronic control unit 14, less the previously established tolerance margin, between the trend over time of the pressure detected by the pressure sensor 15 and the expected theoretical trend of the pressure in the suction chamber 11. After this, the electronic control unit 14 can act on the suction means 13 and, more specifically, on the vacuum pump 18, to cancel or at least reduce this difference, thus ensuring good operating conditions of the machine. Again, after the electronic control unit detects a difference, less the previously established tolerance margin, between the trend over time of the pressure detected by the pressure sensor 15a and the expected theoretical trend of the pressure in the suction chamber 11, for at least one of the cutting devices 10, the electronic control unit 14 can activate the signaling means 21 to allow the user to immediately identify the device 10 that has an anomaly in its operation and to intervene quickly in restoring its correct operating conditions. The diagnostic device may be automatically activated during the first few operating cycles of the machine, in order to perform an automatic diagnostic step each time the machine is started. It has been found in practice that the invention fully achieves the intended purpose and objectives, and special attention is given to the fact that, for the machine according to the invention, by virtue of its diagnostic device, it is possible to identify any differences in operation between the cutting devices of the cutting drum, easily identify any cutting device with a worn blade, with the consequent possibility of quickly arranging its replacement, or make a dynamic correction of the vacuum level in the suction chambers of the cutting devices, thus allowing the machine to work at maximum capacity with minimum vacuum consumption. The invention, as conceived, is susceptible to numerous modifications and variations, which are within the scope of the attached claims. Thus, for example, as shown in Figure 4, the detection means may optionally take the form of at least one acoustic sensor 26 adapted to detect the noise emitted in the suction chamber 11 of the, or of each, cutting device 10 and, in this case, the control unit 14 will be adapted to compare the sound detected by the acoustic sensor 26 with the expected sound under normal and correct operating conditions of the, or of each, cutting device 10. There is no reason why the detection means cannot consist of shock or detonation sensors or, more generally, of a vibrating element, which is susceptible to vibration in the presence of a pressure wave or pressure vibration, and by means of a transducer functionally connected to this vibrating element and adapted to produce a signal in response to the vibration induced in its vibrating element. iffi> Ln / zznz / E / YiAi Furthermore, all details can be replaced by other technically equivalent elements. In practice, the materials used, as well as the adjacent shapes and dimensions, can be any according to the requirements and the state of the art. The descriptions in Italian Patent Application No. 102020000012679, from which this application claims priority, are incorporated herein by reference. Where the technical features mentioned in any claim are followed by reference signs, those reference signs have been included for the sole purpose of increasing the clarity of the claims and, consequently, such reference signs have no limiting effect on the interpretation of each element exemplarily identified by such reference signs.

Claims

1. A container labeling machine comprising conveyor means (3) for transporting containers (4) to be labeled along a forward path and at least one labeling station (5) arranged along said forward path of the containers (4), said labeling station (5) comprising an unwinding unit (8) for a labeling strip (7) wound on a reel, and a cutting drum (9) designed to receive, so as to adhere to its left side surface, said labeling strip (7) fed by said unwinding unit (8) and supporting at least one cutting device (10) that can be activated by a drive means to cut labels (6) to be transferred to said containers (4),Said at least one cutting device (10) comprises a respective suction chamber (11) that is open in the outer side surface of said cutting drum (9) and that receives at least one blade (12), said suction chamber (11) being connectable to air suction means (13) to apply to said labeling strip (7) a pulling action into said suction chamber (11) and to push said labeling strip (7) against said blade (12), to cause said labeling strip to be cut, characterized in that it comprises a diagnostic device for correcting the operation of said at least one cutting device (10), said diagnostic device being provided with detection means for detecting at least one parameter correlated with the pressure present in said suction chamber (11).

2. The machine according to claim 1, further characterized in that said device comprises an electronic control unit (14) that is connected to said detection means, and is adapted to compare the value of said at least one parameter detected by said detection means with a previously established theoretical value of said at least one parameter.

3. The machine according to one or more of the preceding claims, further characterized in that said electronic control unit (14) is adapted to act, less a tolerance margin that may be previously established, on said air suction means (13) in the presence of a difference between the value of said at least one parameter detected by said detection means and said previously established theoretical value of said at least one parameter, to return said value of said at least one detected parameter to said previously established theoretical value.

4. The machine according to one or more of the preceding claims, iffi> Ln / zznz / E / YiAi further characterized in that said detection means comprise pressure measuring means (15) adapted to measure the pressure in said suction chamber (11), at least with said suction chamber connected to said suction means (13), said electronic control unit (14) is adapted to determine the trend over time of the pressure detected by said measuring means within said suction chamber (11) to compare it with a theoretically expected trend over time of the pressure within said suction chamber (11) under normal operating conditions of said cutting device (10), said electronic control unit (14) is adapted to instruct a variation of the flow rate of the air extracted by said means (13),followed by the detection by means of said electronic control unit (14) of a difference, less said tolerance margin which may be previously established, between the trend over time of the pressure detected by the measuring means (15) and the theoretical trend expected over time of the pressure within said suction chamber (11)., 5. The machine according to one or more of the preceding claims, further characterized in that said cutting drum (9) is provided with at least two cutting devices (10) that are mutually and angularly separated around the axis of said cutting drum (9), said electronic control unit (14) is adapted to determine, for each of said cutting devices (10), the trend over time of the pressure detected by said measuring means (15) within the respective suction chamber (11) and to compare it with said theoretical and expected trend over time.

6. The machine according to one or more of the preceding claims, further characterized in that said electronic control unit (14) is adapted to instruct the activation of the signaling means (21) adapted to emit a warning signal, after the detection by said electronic control unit (14), for at least one of said cutting devices (10), of a difference, less said tolerance margin, between the trend over time of the pressure detected within the corresponding suction chamber (11) by means of the corresponding measuring means (15) and said theoretical and expected trend over time.

7. The machine in accordance with one or more of the preceding claims, further characterized in that said measuring means (15) comprise at least one pressure sensor (15a).

8. The machine according to one or more of the preceding claims, further characterized in that said suction means (13) comprise a fixed vacuum distribution unit (16) on which the cutting drum (9) is rotatably mounted, at least one vacuum chamber (17) defined in said fixed distribution unit (16) is connected to a vacuum pump (18) and has a communication opening (19) located on the face of said fixed distribution unit (16) directed towards said cutting drum (9), said suction chamber (11) is connected to a connection opening (20) defined on the face of said cutting drum (9) directed towards said fixed distribution unit (16), said pressure sensor (15a) is arranged in said vacuum chamber (17).

9. The machine in accordance with one or more of the preceding claims, further characterized in that said detection means comprise at least one acoustic sensor (26) adapted to detect the sound emitted in said suction chamber.

10. The machine according to one or more of the preceding claims, further characterized in that said cutting drum (9) is adapted to transfer the labels (6) obtained, after being cut, onto a respective container (4) that is transported by said conveying means (3).

11. The machine according to one or more of the preceding claims, further characterized in that said cutting drum (9) is adapted to release the labels (6) obtained, after being cut, to a transfer drum (25) which is adapted to carry the labels (6), received from said cutting drum (9) in contact with a respective container (4) transported by said conveying means (3).

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