FR1465024A - Device for labeling vertical objects - Google Patents

Description

Device for labeling vertical objects.

The invention relates to a device for ethics. tage of vertical objects and in particular for the bonding of foot, body, shoulder, neck and / or back labels on bottles, comprising a continuously rotating table, successively removing the bottles from a longitudinal conveyor and replacing them on the latter after labeling, and comprising at least one pivoting label container and means for separating and transferring labels from the container to the objects.

Devices of this type are already known which do not lend themselves to high operating speeds and the application of relatively long foot, body, shoulder, neck and back labels because the label, taken from the tank by the glue segments of a rotating cylinder, is simply transferred by doctor blades to a system of bands bringing it into the application position on the periphery of the object to be labeled. Devices of this type do not allow high operating speeds, at which the label tears easily causing a deposit of adhesive on the elements of the device, and as a result disturbances in the operation of these devices. Troubleshooting, especially in the case of faults resulting from the absence of a cylinder, is particularly long on clans devices. sics.

The invention relates to a device for labeling vertical objects, of the type described above, which does not have the aforementioned drawbacks of conventional devices and which, even at high operating speeds, allows the perfect and simultaneous application of labels. feet, body, shoulder, neck and / or back, even long tangential lengths, as well as possibly simultaneous capping of the bottles.

It relates to a device for labeling vertical objects, of the type described above, comprising near the first label of a container, a rotating cylinder carrying glue segments and cooperating with doctor blades and with a drum provided with means. gripping to take the label from the cylinder, and apply it by elastic pressure rollers, on the objects, a plurality of plates each supporting one of said objects and subjected to a controlled rotational movement relative to the table to which they are linked, said plates successively bringing said objects in front of the pressure rollers and in front of the pressure rollers and / or the pressure brushes.

The device may also include a capsulator disposed above the trays and connected to the table.

In order to avoid in particular the disturbances likely to occur during the removal of the label from the container by the gluing segments and in the event of the possible absence of an object to be labeled in the labeling area, the drive of the or label trays of the device is provided by a slide-crank and a rotating cam, the front label performing on the cylinder a reciprocating movement bringing it closer and further away and, at the time of the transfer of the label , a tangential movement, the preliminary movement of the label container towards the cylinder being lockable by a pawl, preferably actuated by an electromagnet.

In such a device according to the invention, the rotatioon of the plates can be controlled by running rollers, linked to said plates and cooperating by friction with fixed cams, located on the periphery of the table.

The rotation of the plates can also be controlled by roller levers linked to said plates, and cooperating under the effect of a spring with fixed control cams, located under the table.

In order to avoid the rotating drive of the bottle to be labeled by the capsulator and to obtain angular positions of the bottle strictly defined with respect to one another, the plate can cooperate with a locking device, fixing a or several angular positions and comprising a locking pin penetrating into corresponding holes in the plate or in the roller, under the action of fixed control cams.

In order to avoid deterioration of the labels which have just been pasted, when the labeled object passes from the table to the discharge device feeding the longitudinal conveyor, it is advantageous to have cams controlling a rotation of the plates not only in the zone of action of the device for applying the labels, but also in front of the discharge device, so that the rotation imposed on the plate places the object in a position such that the applied label cannot come into contact with elements of said evacuation device.

For the application of anterior and posterior labels, it is advantageous to have near the transfer zone of the label of the drum on the bottle, at least one blowing nozzle, applying to the neighboring pressure roller the rear end of the label already held at the front by the gripping means.

The device according to the invention makes it possible to apply in a single operation, front and back labels on an object, in a strictly determined relative position; the gripping means are for this purpose offset in pairs around the periphery of the drum so as to alternately grasp by the anterior and posterior edges, the anterior and dorsal labels which are transmitted to them successively by the glue segments of the cylinder, by the doctor blades ; each pressure roller is advantageously arranged in a recess of the drum, near one of the gripping means and under the label held by the latter.

The gripping means can be constituted by mechanical grippers or, in order to reduce the bulk, by air suction openings.

To allow the mounting of mechanical clamps on the periphery of the drum with as little space as possible, the glue segments are advantageously provided with notches into which the clamps enter as they pass in front of the cylinder.

To obtain a perfect fixing of the anterior and dorsal labels applied simultaneously, the device advantageously comprises on the perimeter of the table, pivoting pressure cylinders, controlled by cams and completing the gluing of the anterior and dorsal labels.
The invention will be better understood on reading the detailed description which follows and on examining the appended drawings, which represent, by way of nonlimiting examples, several embodiments of the invention.

FIG. 1 is a front view of the assembly of the device according to the invention.

Figure 2 is a top view of the device of Figure 1.

FIG. 3 is a diagrammatic top view of an alternative embodiment of the device of the invention, allowing the simultaneous application of labels to the body and the shoulder of a bottle as well as a cap.

Figure 4 is a schematic top view of another variant embodiment of the device of the invention, allowing the simultaneous application of labels on the front and rear of the body of a bottle and on the shoulder thereof and a cap on the neck of said bottle.

Figure 5 is a front view of the drum for applying labels to the body and shoulder of a bottle.

Figure 6 is a top view of the drum of Figure 5.

FIG. 7 is a top view of the table of the device according to the invention and of the elements cooperating with said table.

Figure 8 is a partial axial section of the table of Figure 7.

FIG. 9 is a top view of an alternative embodiment of the drive of a label container.

FIG. 10 is a front view in section along IX-IX of the drive of the label container, of FIG. 9.

Figure 11 is a schematic nine-phase view, illustrating the movements made by a front label and a back label when they are applied to a bottle, under the action of the drum.

FIG. 12 is a front view in axial section of the drive mechanism of a table top.

Figure 13 is a top sectional view of the mechanism of Figure 12.

FIG. 14 is a schematic view of the nine phases of the movements of the drive of the label container, in relation to the movements of the cylinder carrying the glue segments.

The device according to the invention may comprise a rapidly rotating capsulator 1, known per se, arranged concentrically to the axis of rotation 2 of a table 3 driven in continuous rotation, and arranged above the latter so that the bottles 4 each supported by a plate 5 linked to the table 3 are subjected, during their movement in the device, to the action of the capsulator 1. The bottle 4, placed on a plate 5 is thus provided, during its movement with the table 3 around the axis 2 of a capsule by the rapidly rotating capsulator 1, and one or more foot, body, shoulder, neck and back labels.

The bottles to be labeled and, possibly to be capped, move continuously on a rotary table throughout the labeling operation and do not perform, if necessary, during capping, any rotation or only a rotation at constant speed, around of their axis, so that the visible marks on the capsules are avoided, which might otherwise occur and have so far practically prevented the combination of the capping and labeling operations.

A longitudinal conveyor, preferably consisting of a conveyor belt 6, leads the bottles 4 as shown in the upper right part of FIGS. 3 or 4 towards an endless feed screw 7 which separates in a known manner the bottles 4 and presents them at given intervals to the input cam 8, which moves the bottles 4 along a guide arc 9 and brings them to the surface of the continuously rotating table 3, as does the worm d feed 7 and input cam 8; the drive of the table 3 is provided by a toothed wheel 10, connected to a main motor (not shown) and meshing the toothed wheel 11 arranged concentrically and rigidly linked to the table 3.

In the devices of Figures 3 and 4, the previous labels 14 and back labels 14 ', respectively placed in stacks 12 and 12' in trays 13 and 13 ', are brought by the oscillating movement of trays 13 and 13', which will be described later, in the area of action of a cylinder 16, provided with glue segments 15, 15 ', continuously rotating in the direction of clockwise and able to take both previous labels 14 in the tank 13 and 14 'back labels in the 13' tray. The first label 14 or 14 'of the stack 12 or 12' thus describes an elongated curve 17 (FIG. 4), substantially kidney-shaped and tangent to the glue segment 15 or 15 'in the zone of the first contact of the label 11, 14 'with this segment; the tank 13 or 13 'oscillates at a speed strictly equal to the tangential speed of the cylinder 16, so that the label 14, Ill is picked up by the corresponding glue segment 15, 15', without jerks or relative movement with respect to on the surface of this segment.

The glue segments 15 or 15 'have an elongated shape at least for the application of dorsal labels 14', for which a doctor blade 44 cooperates with the cylinder carrying these glue segments 15 15 'on which the adhesive is deposited, so known, by a glue roller 18 pivoting at 19 relative to a pot of glue 20 and transferring on the segments 15, 15 'projecting from the cylinder 16, rotating continuously, the glue taken from the pot 20 by a cylinder 21 The glue roller 18 is formed by concentric discs, of a width corresponding to that of the elongated glue segments 15, 15 '. In a device not delivering dorsal labels, and such as that of FIG. 3, the dimensions of the glue segment 15 may correspond to those of the previous label and the glue roller can be replaced by a cylinder of corresponding height.

The glue roller 1S is driven by means of toothed wheels, not shown, from the drive shaft of the glue roll 21. The glue unit 20, 21, 19, 18 is produced in a known manner, the handle 22 allowing it to be taken out completely. of the machine, including the glue roller 18 mounted on the pot 20, for cleaning or filling.

The label trays 13, 13 'are driven in motion by a slide-crank system 23, 24 and a cam control 25, 26. A slide, formed for example by a U-shaped profile 23, is placed under the label container. 13, 13 'as shown in Figure 10; the crankpin 24, driven by a crankshaft 28 in permanent rotation and fixed in the frame of the machine carries a roller 27 rotating freely on this crankpin 24 (Fig. 9, 10) and moving with a small radial play in this slideway.

Independently of the slide 23, the underside of the label container 13, 13 'is connected at 29 (fig. 9) to a lever 30, 31 which carries a roller 26 rolling on the cam 25, and which pivots around the axis fixed 32.

The pivoting lever 30, 31 is angled. A spring 33 tends to permanently apply the roller 26 of the pivoting lever 30, 31 against the cam 25. The pivoting lever 30 carries a pawl 34 behind which is located the spout 35 of an angled lever 36, 37. The angled lever 36 , 37 pivotally mounted on a fixed axis 38 is connected to the frame 39 of an electromagnet 40 which, when traversed by an excitation current, causes the spout 35 to pivot in the vicinity of the pawl 34 of the pivoting lever 30, 31, for example as soon as one of the bottle feelers 41, 42 activates ml micro-switch not shown, as a result of the absence or damage of a bottle 4 in the feed worm 7 or in the entry cam 8. The bottle feeler 41 corresponds to the front label tray 13 14 and the other feeler 42 to the back label tray 13 '.

When the beak 35, released by the electro-magnet 40, engages with the pawl 34 of the pivoting lever 30, 31 on the rearmost position of the latter resulting from the passage of the maximum boss of the cam 25 under the roller 26, the pivoting lever 30, 31 is withdrawn from the action of the spring 33, so that the label container 13, 13 'only performs an oscillating movement on the rear part of the curve 17 (fig. 4), the distance between the first label 11, 14 'of the stack 12, 12' and the gluing segments 15, 15 'of the cylinder 16 being sufficient to prevent a removal of the first label 14 14' by the encoder segments 15, 15 'and thereby transferring a label to the labeling device. This prevents disturbances in the operation of the labeling device, which may occur when the glued label cannot be placed on the bottle for which it is intended, due to the absence of this bottle. The interruption of the supply of the device with labels 14, 14 'by excitation of the corresponding electromagnet 40 can be controlled not only by the feelers 41, 42, but also by other control members, and in particular by a manual switch, for example with a pushbutton.

The retraction of the label container 13, 13 'relative to the cylinder 16 and its glue segments 15, I5' at each operating cycle can be adjustable.

In order to maintain, during normal operation of the device, the nozzle 35 in the non-operating position and the armature 39 of the electromagnet 40 in the extended position, a coil spring 43 is mounted on the pivot axis 38 of the angled lever 36 , 37; one end of the spring 43 is fixed to the frame of the machine and the other end is connected to the elbow lever 36, 37 so that this spring tends to cause the elbow lever 36, 37 to pivot counterclockwise. a watch and thus keep the beak 35 out of reach of the pawl 34 of the pivot lever tant30, 31.

Other trays for foot, shoulder labels
ment and the neck can be arranged parallel to and above or below the tray 13, for example containing body labels; these trays are subjected to the same movements as the tray 13 and transfer their labels to glue segments 15 also superimposed on the cylinder 16, as shown in figure 5.

The labels are taken from the runner segments 15, 15 'in a known manner, by racers 4; penetrating into the spaces between the segments, then transferred to gripping means consisting either of mechanical grippers 45 (fig. 5) distributed around the periphery of the drum 46 driven in permanent rotation, or by suction openings 47 (fig. 5) 11) distributed over said drum 46 and applied to the bottles 4 which the table 3 scrolls past the drum 46, as shown in FIG. 11.

Pressure rollers 48, also rotating on the drum 46 and provided with an elastic lining, ensure the application and rolling of the labels, 14, 14 'on the bottle 4; a rotational movement of the bottle 4 on its plate 5, its displacement due to the continuous rotation of the table 3 around the axis 2 and the continuous rotation of the tam. bour 46 with the pressure rollers 48 ensure a fold-free application of the label 14 on the bottle 4. The rotational speed of the drum 46 is chosen so that the tangential speed of the pressure rollers 48 in the label transfer zone 14, 14 'on bottle 4 is equal to the tangential speed - of bottle 4 with respect to the rotation on table 3 around axis 2.

A particular advantage of the device according to the invention lies in the possibility of sticking in a single operation the front labels 14 and the back labels 14 'on the bottle 4. With a view to better use of the space available on the drum 46 , the latter is preferably provided with suction openings 47, as shown in FIG. 4. These openings are superimposed in pairs on the periphery of the drum 46 so as to allow the front labels 14 to be held by their front edge and dorsal labels 14 'by their rear edge (or vice versa). The front 14 and dorsal 14 'labels are placed on the drum 46 as shown in particular in phase d of FIG. 11, c) that is to say with their ends not held opposite the pressure rollers 48.

The labels then apply easily and simultaneously on both sides on the bottle 4 moving on the table 3 and penetrating between them in the manner of a tooth penetrating in the case of a gear in the corresponding entry.

Where appropriate, the transfer of a dorsal label 14 'in particular between the area of the grippers 45 or the suction openings 47 of the drum 46 and the bottle 4 can be facilitated by one or more jets of compressed air passing through one or more. nozzles 49, acting on the label 14 'during its transfer between the drum 46 and the bottle 4, and winding it in particular on the adjacent pressure roller 4S. It is also possible to connect the orifices 47 of the drum 46 not to a suction source but to compressed air, by automatic switching, in order to accelerate, if necessary, the aforementioned transfer.

The arrangement on the drum 46 of the device according to the invention, of front labels 14 and dorsaies 14 ', opposite in the transfer zone on the bottle 4 (fig. 11), makes it possible to deposit in a single operation on said bottle. 4 the anterior label 14 and the back label 14 ', at a correct relative distance, with an uninterrupted rotation of the bottle 4 on the plate 5 and the simultaneous rotation of the table 3 carrying this plate 5. It is also possible to 'simultaneous application of the foot, shoulder and neck labels, transferred simultaneously to the bottle 4 as partially illustrated in FIG. 5, by superimposing pressure rollers 48, grippers 45 or suction ports, etc., as well as glue segments 15 and trays 13 for labels.

As indicated above and as shown in particular in FIG. 4, the compressed air escaping from the nozzle 49 wraps the end of the label around the pressure roller 48, rotating on the drum 46, at the same time. below this nozzle; this action is particularly important for fixing the back labels 14 '.

As shown in Figure 4, the freely rotating pressure rollers 48 are housed in cylindrical recesses 76 of the drum 46, in the immediate vicinity of the suction ports 47, so that the labels 14 or 14 ', the front edges of which or rear are maintained on these orifices. extend over the pinch rollers 48 which apply them to the surface of the bottle 4, as shown in figure 11.

After the partial or total application of the label 14 on the bottle 4, the continuous rotation of the table 3 with the plate 5 carrying the bottle brings the latter, as shown in Figure 3, into the brush action zone pressing machines 50, arranged on either side of the bottles 4 placed on the table 3, on circular frames 51 inside and outside the rotating annular surface of the table 3. These brushes, located at the height labels placed on the bottles 4 ensure a pressing and a smoothing of said labels during the passage of the bottles 4, as well as simultaneous support of the bottles on the side opposite to that bearing the label.

The trays 5 preferably do not perform any further rotation about their axis, since only previous labels are applied.

Such rotation of the bottle, however, occurs in the vicinity of the drum 46 only for the application of earlier labels; according to FIG. 7 for example, a rolling roller 52 then moves along a fixed cam 53, thus causing a pivoting of the plate 5 to said roller (FIG. 8) and of the bottle 4 carried by said plate 5. The cam 53 can have, in the zone where a new rotation of the plate 5 is unnecessary, a shape in an arc of a circle concentric with the axis 2 of the table 3.

When the bottle 4 has arrived near an output cam 54, which moves it away from the table 3 and brings it back along a guide arc 55 on the strip 6 of the longitudinal conveyor ensuring its evacuation out of the device ( Fig. 3) an arc 56 of the cam 53 and directed outwards triggers an appropriate rotation of the bottle 4; the roller 52 slides on this arc and thus causes the plate 5 to pivot, using an arm 57, so that the label 14 of the bottle 4 does not come into contact with the guide arc 55 , in the region of the output cam 54. Such a contact would in fact run the risk of damaging the label 14 which has just been placed on the bottle 4 or of sliding this label onto the bottle.

The rotations of the plates 5 can be individually controlled by pivoting levers 57, 58, fixed on the axes 59 of the plates 5 as shown in figures 7 and 8. The axes 59 of the plates 5 pivot in elements of the table 3, while that the arm 58 of the lever 57, 58 is called by a coil spring 60, the end 61 of which is fixed to the table 3, so that the roller 52 located at the end of the arm 57 of the lever 58, 57 is permanently pushed back into abutment against cam 53.

The rotation of the trays 5 can be obtained in the manner shown in Figures 12 and 13, illustrating an alternative embodiment of the device of the invention, when front and back labels are to be attached to the bottles 4. In this variant the free end of the pins 59 of the plates 5 is then connected not to the angled levers 57, 58, but to friction rollers 62 comprising an elastic running surface 63 and driven by rolling segments 64 in an arc of a circle, arranged concentrically to axis 2 of table 3.

In order to fix with precision each of the successive angular positions of the plate 5 carrying the bottle 4, the lower face of the friction rollers 62 can be provided with grooves or bores 65 in which the locking pins 66, movable axially in the vertical direction, can penetrate under the action of coil springs 67 which surround them, as shown in the lower left part of FIG. 12. The free end 68 of the locking pins 66 can further include an annular shoulder 69 coming into contact, during the rotation of the table 3, with unlocking cams 70 fixed on the frame of the machine; the beak of the unlocking cam 70 then rests on the tapered outer surface 71 of the shoulder and pushes it downwards and, overcoming the action of the coil spring 67, causes the locking pin 66 to come out. the bore 65 of the friction roller 62 which can then rotate under the action of a rolling segment 64, as shown in the lower right part of FIG. 12.

In order to ensure sufficient application pressure between the bearing segments 64 and the friction rollers 62, 63, these bearing segments 64 can pivot around vertical journals 72, as shown in the upper right part of FIG. 13, in order to be able to tend towards the friction rollers 62, 63, under the effect of a spring 74 acting on an arm 73 linked to the corresponding segment. The determination of the length of the rolling segments 64, of the friction rollers 62, 63 and of the position of the unlocking cams 70 makes it possible to fix with great precision the extent, the start and the end of the rotation of the plates 5, sufficient for the application of the anterior and dorsal labels. It is thus possible to impart to the bottles 4 a sufficient rotation for the application of the front label and the back label, then a new rotation necessary during the subsequent passage of the bottle 4 in front of the pressing brushes 50 (fig. 3) or the pressure rollers 75 (fig. 4), either to complete the gluing of the label, or to smooth it.

Figure 11a to i shows the different phases of movement of a front tag 14 and a back tag 14 '. During phase a, the anterior label 14 is already gripped by suction through orifices 47 distributed on the drum 46 and brought close to the path of the bottles 4; the jet of air coming out of the nozzle 49 wraps the end of the label 14 around the elastic pressure roller 48.

The dorsal label 14 'still moves during this time on the drum 46, in the action zone of the doctor blades 44, before being also wound around the adjacent pressure roller 48 under the action of the air jet coming from nozzle 49, after having left the zone of action of the rac

Claims (2)

** ATTENTION ** start of field CLMS can contain end of DESC **. a new rotation necessary during the subsequent passage of the bottle 4 in front of the pressing brushes 50 (FIG. 3) or the pressing cylinders 75 (FIG. 4), either to complete the gluing of the label, or to smooth the latter. Figure 11a to i shows the different phases of movement of a front tag 14 and a back tag 14 '. During phase a, the anterior label 14 is already gripped by suction through orifices 47 distributed on the drum 46 and brought close to the path of the bottles 4; the jet of air coming out of the nozzle 49 winds the end of the label 14 around the elastic pressure roller 48. The back label 14 'moves during this time still on the drum 46, in the zone of action of the doctor blades 44, before being also wound around the adjacent pressure roller 48 under the action of the air jet coming from the nozzle 49, after having left the action zone of the doctor blades 44, to finally reach the state represented by phase c. The bottle 4 then reaches (phases d and e), the zone situated between the pressure rollers 48 and consequently between the glued faces of the front label 14 and of the back label 14 ', arranged opposite. After the state represented by phase e, the rotation of the plate 5 carrying the bottle 4, corresponding to phase f, begins under the action of the rolling segments 64 and the friction rollers 62, 63. The end of the gluing operation is ensured, as shown in Figure 4, by pressure rollers 75, pivoting by the action of angled levers 80, rollers 79 and cams 78, while the rolling segment 64 and the corresponding roller 62, 63 continue in driving the bottle in rotation until the application of the two labels 14, 14 'is terminated by the pressure rollers 75. Thanks to their arrangement facing the cams 78. the pressure rollers 75 always act successively so as to d '' first let the protruding part of the label pass through, which comes closer to them during the rotation of the bottle 4 on the plate 5, in order to avoid unstuck or folding of the label, and not come into contact with the latter only behind the protruding part ie. FIG. 14 represents the different phases a, i, of the oscillating movement of a label container in connection with the gluing segments 15. This figure shows the transfer of the first label 14 from the stack 12 to the gluing segment 15 of the cylinder 16 by the simultaneous action of the slide-crank 23, 24 on the one hand and of the cam control 25, 26 on the other hand; we have shown in this figure. the tangential displacement of the label container 13 at the instant of the transfer of the label 14 onto the glue segment 15. It has been shown. in addition. especially in phases i and a. how is carried out a significant retreat of the first label 14, out of the passage of the cylinder 16, to prevent premature contact of the label 14 with the cylinder 16 and simultaneously avoid the continuation of the supply of the cylinder 16 with labels 14, 14 'by means of the locking described above of the drive of the label container in this position, by the nose 35 and the pawl 34. The locking device, controlled by the electromagnet 40 and acting in the position of recoil of the label tray 13, and all other constructive details of the device have been omitted from the movement diagrams of Figure 14 to make them clearer. Of course, the invention is in no way limited to the embodiments described and shown; it is capable of numerous variants, accessible to those skilled in the art, depending on the applications envisaged, and without thereby departing from the scope of the invention. SUMMARY The subject of the invention is: 1 "A device for labeling vertical objects, and in particular for sticking labels on the foot, body, shoulder, neck and / or back on bottles, comprising a continuously rotating table successively removing the bottles from a longitudinal conveyor and returning them to the latter after labeling, at least one swiveling label container and members for separating and transferring the labels from the container to the objects, said device being characterized in that it comprises, near the first label a container, a rotating cylinder, carrying gluing segments and cooperating with doctor blades and with a drum provided with gripping means for removing the label from the cylinder and 'apply, by elastic pressure rollers, on the objects, a plurality of plates each supporting one of said objects and subjected to a controlled rotational movement relative to the table to which they are linked, said s trays bringing said objects in front of the pressure rollers, and in front of the pressure rollers and / or the pressure brushes; 2 "An embodiment of the following device 1" comprising a capsulator connected to the table and arranged concentrically to these objects above the trays; 3 Another embodiment of the following device 10 or 20, in which the drive of the label container (s) is controlled by a crank slide and a rotary cam so that the first label reciprocates towards the cylinder and. at the moment of its transfer, a tangential movement to the cylinder. the movement of the container in the direction of the cylinder being lockable by a pawl controlled by an electromagnet; 40 Yet another embodiment of the ds- positive following 1 ", 2" or 3 in which the rotation of the plates is controlled by running rollers connected to said plates and cooperating by friction with fixed cams, located on the periphery of the plate. table; 50 A new embodiment of the following device 1 ", 20 or 30 in which the rotation of the plates is controlled by roller levers at said plates and cooperating under the effect of a spring with fixed control cams, located under the table; 6 "Another embodiment of the following device 40 or 5 in which the plate cooperates, for its immobilization in at least one of its angular positions, with an adjustable locking device, comprising a locking pin axially penetrating into corresponding holes in the plate or roller, under the action of fixed control cams; 7O Yet another embodiment of the following device 40 or 50 in which means controlling the rotational movements of the trays are also arranged in front of the discharge device to bring the object into a position such as the label it carries. cannot come into contact with parts of said evacuation device; 8 "A new embodiment of the device according to any one of paragraphs 10 to 70, which comprises near the zone of transfer of the label from the drum to the object, at least one blowing nozzle, of which the action causes the winding on the adjacent pressure roller, of the end of the label held by the gripping means carried by the drum; 9 "Another embodiment of the device according to any one of paragraphs 10 to 80 in which the gripping means are arranged in pairs on the periphery of the drum, at distances such that they grip alternately by their front or rear edge previous labels and back labels which are transferred to them by the doctor blades from the glue segments of the cylinder, each pressure roller being housed in a recess in the drum, near one of the gripping means and under the label held by that -this; A new embodiment of the device according to any one of paragraphs 1 "to 9" in which the gripping means are constituted by air suction openings; 11 "Another embodiment of the device according to any one of paragraphs 1 to 9" in which the gripping means are constituted by pliers; 120 Yet another embodiment of the device according to any one of paragraphs 10 to 11, in which the glue segments comprise notches into which the clamps penetrate as they pass in front of the cylinder; 13 A new embodiment of the device according to any one of paragraphs 10 to 120 in which the termination of the gluing of the front and back labels on the objects is ensured by pivoting pressure cylinders located outside the table and controlled by cams; 140 As a new industrial product, any device comprising, separately or in combination, one or more of the characteristics described, in particular in paragraphs 10 to 13 of this summary.