EP0560699B1 - Automatic machine for the continuous attaching of self-adhesive handles - Google Patents

Description

The present invention relates to a fully automatic machine for applying an adhesive tape forming a handle on packaging, for example of drinks in bottles, cans, bricks, household or hygienic paper, frozen products and generally any product which can be grouped under a cardboard envelope or under a plastic film (see for example WO-A-88/08812 and US-A-5,081,817).

Machines of this type are known which generally comprise a gallows-shaped chassis on which is mounted a first device for the installation and preparation of self-adhesive handles and a second device for placing the handles on the packaging. The latter are brought inside the machine by belt or roller conveyors which immobilize each package below the first and second devices.

The first device makes it possible to cut the handles from a self-adhesive strip to the desired length and to keep them in a horizontal position above the packaging to be covered.

The second device is placed above the first and has an inverted U shape, the free ends of each branch of which have a roller which is located near and parallel to the self-adhesive strip. The second device is driven in a vertical movement, using for example a jack, so that the rollers can apply the sticky ends of the handle on either side of the flanks of smaller width of the packaging. .

Such a machine has certain drawbacks with regard to the technical difficulties in perfectly aligning the two devices above the packaging to be covered. In addition, the fact of stopping each package under the devices for the installation of the self-adhesive strips forming a handle considerably slows down the production rate.

It is to these drawbacks that the present invention more specifically intends to remedy.

The machine also includes means for conveying the adhesive tape secured to the labels up to the plate at the rate of travel of the packaging inside the machine.

• Fig. 1 est une vue de dessus illustrant la machine automatique suivant l'invention.
• Fig. 2 est une vue en perspective partielle avec arrachement montrant le plateau rotatif pendant la pose et avant la découpe du ruban adhésif formant poignée.
• Fig. 3 est une vue semblable à celle de fig. 2, mais représentant le plateau rotatif après la coupe du ruban adhésif.
• Fig. 4 et 5 sont des vues semblables à celles des fig. 2 et 3, mais illustrant une variante du plateau rotatif avant et après la découpe du ruban adhésif formant poignée.
• Fig. 6 est une vue en perspective illustrant par exemple des bouteilles enveloppées dans un film plastique et comportant une poignée suivant l'invention.
• Fig. 7 à 9 sont des vues schématiques montrant les différentes étapes de fonctionnement de la machine automatique pour la pose d'une poignée sur un emballage.
• Fig. 10 à 12 sont des vues semblables à celles des fig. 7 à 9, mais illustrant les différentes étapes de fonctionnement de la machine avec le plateau rotatif représenté en fig. 4 et 5.
• Fig. 13 et 14 sont des vues schématiques montrant le dispositif d'assemblage des étiquettes sur le ruban adhésif.

The appended drawing, given by way of example, will allow a better understanding of the invention, the characteristics which it presents and the advantages which it is capable of providing:

• Fig. 1 is a top view illustrating the automatic machine according to the invention.
• Fig. 2 is a partial perspective view with cutaway showing the rotary plate during installation and before cutting the adhesive tape forming a handle.
• Fig. 3 is a view similar to that of FIG. 2, but showing the turntable after cutting the adhesive tape.
• Fig. 4 and 5 are views similar to those of FIGS. 2 and 3, but illustrating a variant of the rotary plate before and after cutting the adhesive tape forming a handle.
• Fig. 6 is a perspective view illustrating for example bottles wrapped in plastic film and comprising a handle according to the invention.
• Fig. 7 to 9 are schematic views showing the different stages of operation of the automatic machine for fitting a handle on a package.
• Fig. 10 to 12 are views similar to those of FIGS. 7 to 9, but illustrating the different stages of operation of the machine with the rotary plate shown in fig. 4 and 5.
• Fig. 13 and 14 are schematic views showing the device for assembling the labels on the adhesive tape.

There is shown in fig. 1 an automatic machine 1 for fitting self-adhesive handles to E-packages of rectangular or similar shape. It comprises, in known manner, three conveyor belts 2, 3 and 4, at least one of which, preferably the one referenced 2, is of the type timer in order to distribute the packaging E. at a regular rate. The conveyors 3 and 4 are driven in continuous rotation to allow the packaging E on the one hand to run continuously inside the machine 1, and on the other hand d '' be removed from it as soon as possible after fitting the handle.

On either side of the conveyor 3 and near the conveyor 4 is provided a frame 5 in the form of a jib. The latter makes it possible to support a rotary table 6 above the conveyor 3 via a horizontal shaft 7. At one end of the shaft 7, a first transmission system 8 with pulleys is provided and belt for rotating the plate 6, as will be seen more clearly below. At the other end of the shaft 7 is disposed a second transmission system 9 with bevel gear and belt to drive an assembly device 10 simultaneously with the plate 6.

The assembly device 10 comprises a double horizontal connecting rod 12 which pivots about a vertical axis 13 provided in the middle, while rollers 14 are mounted free in rotation at each end of said connecting rod. The assembly device can also be produced for example by means of a pneumatic cylinder which operates simultaneously with the plate 6.

Near the assembly device 10, and in the same horizontal plane, is fixed a magazine 15 for the storage of labels 16 which are made either of paper or of thin cardboard. The labels 16 are retained inside the magazine 15 by means of a stop 17 which is resiliently loaded in order to facilitate the distribution of said labels, as will be seen more clearly below.

Outside the automatic machine 1 is placed adhesive tape 18 in a roll known per se which runs past the magazine 15 by means of two pulleys 19 and 20 free to rotate about a vertical axis, so that the sticky side of the tape 18 is disposed opposite and parallel to the labels 16. The tape 18 is brought to the rotary plate 6 by means of three other pulleys 21, 22 and 23 so that it is located on the one hand above the packages E and on the other hand retained in a vertical plane on the rotary plate 6 by means which will be better described later.

We have shown in fig. 2 and 3, part of the means for retaining and cutting the adhesive tape 18 on the rotary plate 6 which is symmetrical with respect to its horizontal shaft 7. It has been preferred, for the sake of clarity and understanding, to describe only part of the tray 6, since the other is identical.

The rotary plate 6 comprises two parallel walls 24 and 25 arranged on either side of the shaft 7 and which are joined at their ends by a cross member 26 which has a rounded external profile. The crosspiece 26 is pierced in the middle of a slot 27 which opens out between the walls 24 and 25.

Below the shaft 7 and along a vertical axis are fixed near the slot 27 of the crosspiece 26 and between the walls 24 and 25 two cylinders 28 and 29. The latter comprise respectively two parallel control rods 30 and 31 l 'relative to each other in a vertical plane. The free ends of the rods 30 are integral with a U-shaped fork 32. Each vertical branch of the U and more particularly the face turned towards the side of the vertical wall 24 supports a roller 33 which is free to rotate.

Between the vertical wall 24 and the vertical branches of the U of the fork 32 are articulated two levers 34 in the form of L, the horizontal part of which forms a hook opens out onto the plate 6 by crossing the slot 27 of the crosspiece 26. The levers 34 are arranged in opposite directions with respect to each other, so that their horizontal parts or hooks are opposite. The levers 34 are articulated at their free end about a horizontal axis which is placed near the rollers 33 of the fork 32. The rollers 33 are pressed against the outer edge of the longest branch of the levers 34 in L-shaped. The levers 34 are loaded elastically by means of springs 35 which are placed near the horizontal part forming a hook in order to keep them as far as possible from each other.

The free end of the control rods 31 is integral with a serrated blade 36. The teeth of the latter are provided on the side of the slot 27 of the crosspiece 26 to open from the latter when the jack 29 is supplied, as will be seen better below. In addition, the serrated blade 36 is provided offset from the side of the vertical wall 24 so as to be between it and the levers 34.

There is shown in fig. 3 the plate 6 in the same position as that shown in FIG. 2, but with the cylinders 28 and 29 supplied. It can be seen that the control rods 31 and the rods 30 of the actuator 28 allow the blade 36 to be simultaneously and respectively removed from the outside of the plate 6 and to roll the rollers 33 on the outer edges of the levers 34 to bring them in a vertical position against the reaction of the return springs 35. It is noted that then in this position the horizontal part forming the hook of the levers 34 is located behind the serrated cutting blade 36.

We have shown in fig. 4 and 5 a variant of the rotary plate 6 referenced 6 'for retaining and cutting the adhesive tape 18 forming a handle. It has been preferred, for the sake of clarity and understanding, to describe only one part of the plate 6 ′, since the other is identical.

The rotary plate 6 'comprises two parallel walls 24' and 25 'arranged on either side of the shaft 7' and which are joined at their ends by a cross member 26 'which has a rounded external profile. The cross 26 'is pierced in the middle of a slot 27' which opens between the walls 24 'and 25'. The wall 24 'is pierced near its vertical axis with a horizontal light 37' provided parallel and below the shaft 7 '. At the light 37 'and between the two walls 24' and 25 'is fixed along a horizontal axis a first cylinder 38' which has control rods 39 'parallel to each other in a vertical plane . The free ends of the control rods 39 ′ are integral with a plate 40 ′ which crosses the horizontal lumen 37 ′ to open out from the wall 24 ′. The free end of the plate 40 'located outside is secured to a retaining finger 41' arranged along a horizontal axis and parallel to the light 37 '.

Below the jack 39 'and along a vertical axis is fixed near the slot 27' of the cross member 26 'and between the walls 24' and 25 'a second jack 42'. The latter comprises a control rod 43 ′, the free end of which is integral with a U-shaped fork 32 ′.

Each vertical branch of the U and more particularly the face turned towards the side of the vertical wall 24 ′ supports a roller 33 ′ which is free to rotate. The transverse web or bottom of the U has a boss 44 'located at the level of the attachment with the control rod 43'. On the face of the boss 44 'turned towards the side of the wall 24' is fixed a serrated cutting blade 36 '. The teeth of the latter are provided on the side of the slot 27 'of the crosspiece 26' so as to be able to open out of the latter when the jack 42 'is supplied, as will be seen better below.

On either side of the blade 36 'and between it and the vertical branches of the U of the fork 32' are articulated two levers 34 'L-shaped whose horizontal part forming a hook opens out to the outside of the plate 6 'by crossing the slot 27' of the crosspiece 26 '. the levers 34 ′ are arranged in opposite directions with respect to each other, so that their horizontal parts or hooks are opposite. The levers 34 'are articulated at their free end around a horizontal axis which is placed near the rollers 33' of the fork 32 '. The rollers 33 'are in abutment against the outer edge of the longest branch of the L-shaped levers 34'. The levers 34 'are resiliently loaded by means of springs 35' which are placed near the horizontal part forming a hook in order to keep them as far apart as possible from each other.

There is shown in fig. 5 the plate 6 'in the same position as that shown in FIG. 4, but with cylinders 38 'and 42' supplied. It is noted that then the plate 40 'moves inside the horizontal light 37' using the cylinder 38 'in order to release the retaining finger 41' from the center of the wall 24 '. Similarly, when the jack 42 'is supplied, the control rod 39' simultaneously allows the blade 36 'to come out outside of the plate 6' and to roll the rollers 33 'on the outer edges of the levers 34' to bring these in a vertical position against the reaction of the return springs 35 '. Note that then in this position the horizontal part forming the hook of the levers 34 'is behind the serrated cutting blade 36'.

We have shown in fig. 6 a package E consisting for example of several bottles 51 which are held together by means of a plastic film 52 or the like.

It is noted that the packaging considered carries in its upper part a handle which consists of an adhesive tape 18 and a label 16 made of paper or cardboard. The sticky parts of the handle are preferably applied in the middle of the wider edges of the package E and on the plastic film 52 or the like.

Illustrated in fig. 7 to 9 the different stages of operation of the automatic machine 1 described above provided with the rotary plate 6.

It is noted that the blades 36 and the levers 34 placed at the two ends of the plate 6 are moved respectively by the intermediary of the jacks 29 and 28.

We have shown in fig. 7 the plate 6 in vertical position after the passage of a package E, the latter being shown on the conveyor 4. It can then be seen that the ribbon 18 is parallel and against the vertical wall 25 of the plate 6 and that it is retained in the lower part thereof via the levers 34 forming a clamp. The serrated blade 36 operating simultaneously with the aforementioned levers 34 is also out, because it has just cut the adhesive tape 18 to release the packaging E provided with its handle. The adhesive tape 18 is brought into this position by means of the different pulleys 19, 20, 21, 22 and 23 which allow the sticky ends of the tape to be presented on the arrival side of the other packages E ', E' ', etc.

In the upper part of the plate 6, the levers 34 and the corresponding blade 36 are respectively opened and retracted by means of the jacks 28 and 29.

It is noted at the start and in the vertical position and only in this position, that the levers 34 and the blades 36 provided at each end of the plate 6 operate alternately, that is to say when one is closed and out, l other is open and returned.

Another package E 'is brought along arrow F through conveyors 2 and 3 against the lower part of the vertical wall 25 of the plate 6, so that the free or front end of the adhesive tape 18 sticks to one of the larger sides of the package E '. The latter passes in front of an electronic sensor, not shown, making it possible to instantly engage the plate 6 in rotation around the shaft 7, which will be broken down into two half-rotations in order to better understand the operation.

The first half-rotation around the shaft 7, shown in fig. 8, makes it possible to stick the free or front end of the ribbon 18 to the packaging E 'while the latter continues to run under the plate 6. At the start of the first half-rotation of the plate 6, the levers 34 being in face of the conveyor 3 open to release the ribbon 18 and simultaneously the levers 34 provided opposite, that is to say in the upper part of the plate 6, close to retain the ribbon. In addition, the blades 36 located at each end of the plate 6 are retracted. The half-rotation of the plate 6 is synchronized with the continuous drive of the packaging E 'according to the arrow F allowing to start pulling on the ribbon 18 in order to bring another label 16. It is noted that the ribbon 18 is place between the levers 34 provided closed and which are now on the left with respect to the rotation shaft 7.

The packaging E 'continues to advance along the arrow F while the plate 6 simultaneously performs another half-rotation to be in the vertical position.

The second half-rotation around the shaft 7, shown in fig. 9, makes it possible to bring the Aunt neck portion or rear end of the ribbon 18 provided between two labels 16 against the second side of the greatest width of the packaging E '. The label 16 is located above the package E 'and at a distance from it. The end of the rotation of the plate 6 allows the ribbon 18 to continue to be pulled in order to bring another label 16 definitively against the wall 24 and parallel to it. The levers 34 which were closed to the left of the shaft 7 in FIG. 8 are now located opposite the conveyor 3, while simultaneously and by means of its jack 29, the corresponding blade 36 is extended so as to cut the ribbon 18. The package E 'provided with the handle is removed using the conveyor 4 and the automatic machine 1 is ready to receive another package.

Note that the blades 36 provided at the ends of the plate 6 are always on the side of the packaging E to be removed, so that the corresponding levers 34 retain the other part of the tape 18. It can be seen, in FIG. 9, that the plate 6 is in a position identical to that shown in FIG. 7, but it has the vertical wall 24 instead of the wall 25 opposite the packages E.

Thus, at each rotation, the plate 6 is automatically recharged with a new length of ribbon 18 on which a label 16 is affixed which will be applied to another package E ''.

In addition, the rotation of the plate 6 simultaneously drives the assembly device 10 described above in a pivoting around a vertical axis.

Illustrated in fig. 10 to 12 the different stages of operation of the automatic machine 1 described above provided with a rotary plate 6 '.

It is noted that each retaining finger 41 'provided on each wall 24' and 25 'operates respectively using a jack 38', while the blades 36 'and the levers 34' placed at the two ends of the plate 6 ' are moved through the cylinders 42 '.

We have shown in fig. 10 the plate 6 'in vertical position after the passage of a package E, the latter being shown on the conveyor 4. It can then be seen that the ribbon 18 is parallel to the vertical wall 25' of the plate 6 'and retained in the part lower thereof by means of the levers 34 'forming a clamp. The serrated blade 36 'operating simultaneously with the abovementioned levers 34' is also out, because it has just cut the adhesive tape 18 to release the packaging E provided with its handle. The retaining finger 41 'provided in the middle of the wall 25' is located opposite the label 16 so as to retain all of the adhesive tape 18 against the plate during the rotation of the latter, as will be seen more clearly. far. The adhesive tape 18 is brought into this position thanks to the different pulleys 19, 20, 21, 22 and 23 which make it possible to present the sticky ends of the tape on the arrival side of the other packages E 'and E'', etc.

In the upper part of the plate 6 ', the levers 34' and the corresponding blade 36 'are respectively opened and retracted by means of the jack 42', while the retaining finger 41 'provided on the face 24' is offset relative to the center of the latter by means of the jack 38 '.

It is noted at the outset that each time a retaining finger 41 'is placed in the center of one of the vertical walls, the latter is turned towards the arrival side of the packages E, that provided on the opposite side being off-center. In the vertical position and only in this position, the levers 34 'and the blades 36' provided at each end of the plate 6 'operate alternately, that is to say when one is closed and pulled out, the other is opened and returned.

Another package E 'is brought along the arrow F via the conveyors 2 and 3 against the lower part of the vertical wall 25' of the plate 6 ', so that the free or front end of the adhesive tape 18 gets stuck the on one of the faces of greater width of the package E '. The latter passes in front of an electronic sensor, not shown, making it possible to instantly engage the plate 6 'in rotation around the shaft 7', which will be broken down into two half-rotations in order to better understand the operation.

The first half-rotation around the shaft 7 ', shown in fig. 11, makes it possible to stick the free or front end of the ribbon 18 to the packaging E 'while the latter continues to run under the plate 6'. The retaining finger 41 'provided on the wall 25' retains the label 16 secured to the ribbon 18 to form sufficient space between the packaging E 'and the handle. The half-rotation of the plate 6 'is synchronized with the continuous drive of the packaging E' according to the arrow F making it possible to start pulling on the ribbon 18 in order to bring another label 16. It is noted that the ribbon 18 is placed between the levers 34 'provided open and which are now on the left relative to the rotation shaft 7'.

The packaging E 'continues to advance along the arrow F while the plate 6' simultaneously performs another half-rotation to find upright.

The second half-rotation around the shaft 7 ', shown in fig. 12, allows to bring the sticky part or rear end of the tape 18 provided between two labels 16 against the second side of the greatest width of the packaging E '. The label 16 located above the package E 'is always kept away from it by the retaining finger 41' located on the side of the wall 25 '. The end of the rotation of the plate 6 allows the ribbon 18 to continue to be pulled in order to definitively bring another label 16 against the wall 24 'and parallel to it. The levers 34 'which were open to the left of the shaft 7' in fig.11 are now located opposite the conveyor 3, and closed by means of the corresponding jack 42 '. Simultaneously with the closing of the levers 34 ′, the corresponding blade 36 ′ is extended so as to cut the ribbon 18. At the same time as the cutting of the ribbon 18, the retaining finger 41 ′ of the wall 25 ′ emerges from the center for release the label 16, while the other finger 41 'provided on the wall 24' is placed opposite the other label 16.

The package E 'provided with the handle is removed using the conveyor 4 and the automatic machine 1 is ready to receive another package.

It is noted that the blades 36 'provided at the ends of the plate 6' are always on the side of the packaging E to be removed, so that the corresponding levers 34 'retain the other part of the ribbon 18.

We see, in fig. 12, that the plate 6 'is in a position identical to that shown in fig. 10, but it has the vertical wall 24 'instead of the wall 25' opposite the packages E.

Thus, at each rotation, the plate 6 'is automatically recharged with a new length of ribbon 18 on which a label 16 is affixed which will be applied to another package E' '.

In addition, the rotation of the plate 6 'simultaneously drives the assembly device 10 described above in a pivoting around a vertical axis.

There is shown in fig. 13 and 14 the assembly device 10 which allows to stick the labels 16 on the adhesive tape 18. The rotation of the plate 6 or 6 'drives, via the transmission system 9, the double connecting rod 12 in a pivoting around the vertical axis 13, so as to apply the adhesive tape 18 on the first label 16 of the magazine 15 by means of the rollers 14. The adhesive tape 18 is driven in a clocked movement according to arrow F1 which is equal to a rotation of the plate 6 or 6 'and in advance of the packaging E '. The label 16 is glued over its entire length to the ribbon 18 using the corresponding roller 14 and it is removed simultaneously from the magazine 15 by the advance movement of the ribbon in order to be brought to the rotary plate 6 or 6 '. Another label 16 is then presented at the outlet of the magazine 15 to be affixed to the adhesive tape 18, as described above, and this at each rotation of the plate 6 or 6 '. It is noted that each rotation of the plate 6 or 6 ′ is carried out by the passage of the packages E in front of an electronic sensor, not shown, making it possible to trigger the transmission system 8.

It should be noted that this type of automatic machine 1 makes it possible to place handles at a very high rate, this being of the order of 60 to 90 handles per minute.

It is noted that this machine 1 can be used with an adhesive tape 18 without label 16, for closing the packaging.

It is obvious that the automatic machine 1 can operate with all kinds of sticky handles, for example rolls already fully prepared.

Claims (14)

1. Automatic machine for the continuous attaching of an adhesive tape (18), provided with labels (16), forming self-adhesive handles on the packagings of all products and which can be grouped together under an envelope in a box or under a plastics film, characterized in that it comprises a device (10) applying said tape (18) on to a label (16) enclosed in a magazine (15) to form handles having two adhesive ends, a rotary platen (6 or 6') which turns in synchronism with the device (10) and over which passes the adhesive tape (18) provided with labels (16) in such a way that, at the time of passage of a package (E) which is moved continuously and in synchronism with the rotation of the platen (6 or 6'), this package abuts against the forward adhesive end of the tape forming a handle to adhere it against its face, while the rotation of the platen (6 or 6') and the synchronized advance of the package cause the unwinding of the tape (18) above said package and at a certain distance from the latter to apply the rearward adhesive end of the tape forming the handle against the face of the packaging opposite to that having received its forward end, the platen (6 or 6') comprising means to retain and sever the tape (18).
2. Machine according to Claim 1, characterised in that the rotary platen (6) comprises two parallel walls (24, 25) disposed on both sides of a horizontal central shaft (7) and of which the ends are connected together by two crosspieces (26) which are each provided in their middle with a gap (27) which extends to between the walls.
3. Machine according to Claim 1, characterised in that the means to retain and sever the tape (18) are symmetrical relative to the horizontal shaft (7).
4. Machine according to Claim 3, characterised in that the means to retain and sever comprise two actuators (28, 29) fixed vertically between the walls (24, 25) and in the region of the gap (27) of each crosspiece (26) and which include parallel control rods (30 and 31) joined respectively to a fork (32) in the form of a U, each of the vertical limbs of which supports a freely rotatable roller (33), and to a serrated cutting blade (36), on both sides of said blade and between it and the vertical limbs of the fork (32) are pivoted and elastically loaded two levers (34) in the form of an L of which the horizontal part forming a hook lies outside the rotary platen (6) such that the extreme edges of the longer length of each lever (34) cooperate with the rollers (33).
5. Machine according to Claim 4, characterised in that each lever (34) is elastically loaded by a spring (35).
6. Machine according to Claim 4, characterised in that the actuators (28 and 29) placed at each end of the rotating platen (6) operate alternately.
7. Machine according to Claim 1, characterised in that the rotary platen (6') comprises two parallel walls (24', 25') disposed on both sides of a horizontal and central shaft (7') and of which the ends are connected together by two crosspieces (26') which are each provided in their middle with a gap (27') which extends to between the walls, while each wall (24', 25') is provided in the region of the main vertical axis of the rotary platen (6') with an aperture (37') parallel to the shaft (7').
8. Machine according to Claim 7, characterised in that the means to retain and sever the tape (18) and the apertures (37') are symmetrical relative to the horizontal shaft (7').
9. Machine according to Claim 1, characterised in that the means to maintain the tape (18) at a certain distance from the package consists of a first actuator (18') fixed horizontally in the region of the aperture (37') and between the walls (24', 25') and which include two parallel control rods (39') of which the free ends support a plate (40') which traverses said aperture to emerge outside the rotary platen (6'), while the plate (40') is fixed to a retaining finger (32) disposed horizontally and parallel to said aperture.
10. Machine according to Claim 8, characterised in that the means to retain and sever comprise a second actuator (42') fixed vertically between the walls (24', 25') and in the region of the gap (27') of each crosspiece (26') and which includes a control arm (43') fixed to a fork (32') in the form of a U of which each vertical limb supports a freely rotatable roller (33'), while the middle of the base of the U includes a serrated cutting blade (36'), on both sides of said blade and between it and the vertical limbs of the fork (32') are pivoted and elastically loaded two levers (34') in the form of an L, of which the horizontal part forming a hook lies outside the rotary platen (6') such that the extreme edges of the longer length of the L of each lever (34') cooperate with the rollers (33').
11. Machine according to Claim 9, characterised in that the horizontally orientated actuators (38') operate alternately.
12. Machine according to Claim 1, characterised in that the crosspiece (26 or 26') presents a rounded outer profile.
13. Machine according to Claim 1, characterised in that the adhesive tape (18) is fed to the rotary platen (6 or 6') by means of pullies (19, 20, 21, 22, 23).
14. Machine according to Claim 1, characterised in that the device (10) comprises a double horizontal connecting rod (12) which pivots about a vertical axis (13) provided at its middle, while the rollers (14) turn freely at each end of said connecting rod.

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