Rewinding assembly

Abstract

The invention is a rewinding assembly (1) for a system (900) that performs operations on a web (500). The rewinding assembly (1) comprises: i) a mandrel group (2) suitable for housing a reel of processed web (500), wherein the mandrel group (2) extends with respect to a rewinding axis (R-R) and comprises a mandrel shaft (20) that can be driven in rotation for rewinding the web (500); ii) an arm group (3) comprising an arm (30) extending in the radial direction with respect to the rewinding axis (R-R) and a roller (35) positioned at the end of the arm (30), wherein the web (500) is unwound from said roller (35) towards the reel; a connection group (4) suitable for connecting the mandrel shaft (20) to the arm ( 30 ). The connection group (4) is suitable for driving the mandrel shaft (20) in rotation and is engaged with the arm (30) so that the arm (30) is movable in an angular direction as the rotary action on the mandrel shaft (20) varies. The connection group (4) comprises a clutch device (49) engaged, by means of a friction action, with the mandrel shaft (20) and suitable for varying said friction action as the rotation speed of the mandrel shaft (20) varies and, as said friction action varies, is suitable for varying the angular position of the arm (30) between an initial position and a varied angular position so as to vary the path of the web (500) unwinding from the roller (35).

Description

REWINDING ASSEMBLYDESCRIPTION

[0001] The present invention relates to a rewinding assembly. Furthermore, the present invention relates to a system which carries out operations on a web comprising said rewinding assembly.

[0002] In the prior art, embodiments of systems that perform operations on webs are known.

[0003] In the present discussion, the term "web" means any type of product in the form of a thin flexible strip, for example also a film or a foil.

[0004] In particular, said systems comprise operating assemblies that are suitable for performing specific operations on a web: said operating assemblies receive as input a web to be processed at the input and return as output a processed web at the output.

[0005] According to a well-known embodiment, among the embodiments of said systems there are labeling systems: the operating assembly of a labeling system receives a web to be processed, i.e., a web with labels, and returns a processed web, i.e., without labels: the operating assembly detaches the labels and then positions them on a product or transfers them to another assembly of the system which positions them on a product.

[0006] In order to carry out said operations on the web,the known systems perform a movement of the web that varies over time in speed or in a pulling or pushing action.

[0007] In particular, the known systems comprise a rewinding assembly whereupon a reel of processed web is mounted. Preferably, the web is wound onto said reel, housed on the rewinding assembly, which is driven in rotation. In certain embodiments, the rewinding assembly is guided in rotation by the pulling assembly which pulls the web to be processed.

[0008] In the known embodiment s, breakages and non- efficient rewinding of the web have been found to occur during the rotary action of the rewinding assembly.

[0009] In addition, the solutions of the known systems are particularly complex, moving the web in a complex manner and identifying multiple critical issues and, in particular, multiple points of overheating.

[0010] These problems become greater as the operations performed by the operating assembly on the web become more complex, for example the larger the labels and / or the faster said operations are performed.

[0011] The object of the present invention is to propose a system that succeeds in fulfilling all of the aforesaid needs while minimizing or nullifying the aforesaid problems.

[0012] This object is achieved by means of the rewinding assembly claimed in claim 1, i.e., by means of a rewinding assembly that is suitable for adjusting the rolling, i.e., the rewinding of the web, in a simplified manner. This object is also achieved by means of the system which comprises said rewinding assembly as claimed in claim 13. The claims dependent on these request protection for further features and entail further technical benefits.

[0013] In addition, further features and advantages of the invention will become clear from the description provided below of the preferred embodiments thereof given as non- limiting examples with reference to the accompanying figures, in which:Figures 1a, 1b, and 1c are three schematic views of a system according to the present invention, in an initial raised-arm configuration, an intermediate configuration, and in a final lowered-arm configuration;Figures 2a' and 2a" show two perspective views, respectively, of a rewinding assembly according to the present invention, configured in the initial configuration;Figure 2b shows a front view of the rewinding assembly of Figures 2a' and 2a";Figure 3a shows a sectional view along the sectionplane A-A of Figure 2b;Figure 3b shows a vertical sectional view along the section plane A-A of Figure 2b;Figures 4a' and 4a" show two perspective views, respectively, of a rewinding assembly according to the present invention, configured in an intermediate configuration;Figure 4b is a front view of the rewinding assembly ofFigures 4a' and 4a";Figure 5a shows a sectional view along the section plane A-A of Figure 4b;Figure 5b shows a vertical sectional view along the section plane A-A of Figure 4b;Figures 6a' and 6a" show two perspective views, respectively, of a rewinding assembly according to the present invention, configured in a final configuration;Figure 6b shows a front view of the rewinding assembly of Figures 6a' and 6a";Figure 7a shows a sectional view along the section plane A-A of Figure 6b;Figure 7b shows a vertical sectional view along the section plane A-A of Figure 6b;Figures 8' and 8" show two perspective views of some components of a connection group that are comprised within the rewinding assembly according to a preferredembodiment of the present invention.

[0014] With reference to the accompanying figures, a rewinding assembly according to the present invention is indicated in the entirety thereof with the numeral 1.

[0015] Conversely, the numeral 900 indicates a system that performs operations on a web 500. Said system 900 comprises said rewinding assembly 1.

[0016] The system 900 further comprises an unwinding assembly 910 housing a web 500, an operating assembly 920 suitable for performing an operation on the web 500, and a pulling assembly 950 suitable for pulling the web 500.

[0017] The unwinding assembly 910 is the inlet of the system 900.

[0018] A reel of a web 500 to be processed is in fact housed upon the unwinding assembly 910. In other words, the unwinding assembly 910 is suitable for allowing the unrolling of a web 500 to be processed by rewinding the reel of web 500 housed therein.

[0019] The rewinding assembly 1 is the outlet of the system900.

[0020] In fact, a reel of processed web 500 is housed upon the rewinding assembly 1. In particular, the rewinding assembly 1 rolls a processed web 500, thereby creating a reel of processed web.

[0021] According to a preferred embodiment, the rewindingassembly 1 is guided in rotation in order to perform the rewinding (i.e., the rolling) of the web 500.

[0022] According to a preferred embodiment, the rewinding assembly 1 is operatively connected to the pulling assembly 950. The rewinding assembly 1 is preferably guided in rotation by the pulling assembly 950. That is to say that the pulling assembly 950 performs a pulling action on the web 500 and at the same time drives the rotation of the rewinding assembly.

[0023] The system 900 preferably comprises a drive member that extends from the pulling assembly to the rewinding assembly 1, in particular to a pulley 48 enclosed in said rewinding assembly 1.

[0024] Preferably, said drive member is a belt, or a chain or a toothed band.

[0025] Preferably, the pulling action performed by the pulling assembly 950 is variable. Preferably, the pulling action performed by the pulling assembly 950 is at a variable speed. That is to say that the pulling action performed by the pulling assembly 950 does not have the same continuity over time.

[0026] Similarly, the rotary action of the rewinding assembly 1 is also variable. Preferably, the rotary action performed by the rewinding assembly 1 is at a variable speed. That is to say that the rotary actionperformed by the rewinding assembly 1 does not have the same continuity over time.

[0027] According to a preferred embodiment, the system 900 is a labeling system. Preferably, therefore, the operating assembly 920 performs labeling operations, in fact the reel of web 500 housed on the unwinding assembly910 comprises a web to be processed, i.e., with labels, and the reel on the rewinding assembly 1 comprises a processed web, i.e., without labels.

[0028] Preferably, said operating assembly 920 detaches the labels and arranges them on a product.

[0029] Preferably, said operating assembly 920 detaches the labels in order to transfer them to another assembly of the system that then arranges them on a product.

[0030] With the exception of some particular features of the system 900, and in particular of the rewinding assembly 1, described hereinafter, it is pointed out that the system 900 is suitable for comprising a plurality of free or guided wheels and / or cylinders that are suitable for identifying a particular track / path of the web 500.The number and / or position and / or shape of said components does not in any way limit the subject matter of the present invention.

[0031] According to the present invention, the rewinding assembly 1 comprises a mandrel group 2 suitable forhousing a reel of web 500 processed or to be rewound.

[0032] The reel of web 500 may be housed in such a way as to rotate in unison with the mandrel group 2 upon the rotary action whereto said mandrel group 2 is subjected.

[0033] The mandrel group 2 extends with respect to a rewinding axis R-R.

[0034] The mandrel group 2 comprises a mandrel shaft 20.Said mandrel shaft 20 extends along the rewinding axis RR.

[0035] Preferably, the mandrel shaft 20 is rotatable about the rewinding axis R-R, receiving a rotary action.

[0036] According to a preferred embodiment, the reel is engaged with the mandrel shaft 20 to rotate in unison therewith.

[0037] In other words, the guided rotary action involves rotating the mandrel shaft 20 and consequently rewinding the web onto the reel.

[0038] According to a preferred embodiment, the mandrel group 2 further comprises a reel plate 29 suitable for providing an axial abutment to the web 500 and to the reel comprising said web.

[0039] Preferably, said reel plate 29 has a radial extension with respect to the rewinding axis R-R.

[0040] According to a preferred embodiment, the reel plate29 rotates together with the reel.

[0041] Furthermore, the rewinding assembly 1 comprises an arm group 3 comprising an arm 30 and a roller 35 arranged at the end of the arm 30.

[0042] The arm 30 extends in a radial direction with respect to the rewinding axis R-R, and the roller 35 is arranged at the end of the arm 30 distal from the rewinding axis R-R.

[0043] The roller 35 extends along a roller axis x-x substantially parallel to the rewinding axis R-R and the web 500 unwinds on said roller 35 towards the reel.

[0044] Preferably, the roller 35 is hinged to the arm 30 so as to rotate freely with respect thereto about the roller axis X-X.

[0045] According to the present invention, moreover, the rewinding assembly 1 comprises a connection group 4 that is suitable for connecting the mandrel shaft 20 to the arm 30.

[0046] In particular, the connection group 4 is suitable for driving the mandrel shaft 20 in rotation.

[0047] In particular, the connection group 4 is suitable for engaging the arm 30 so as to move it in an angular direction as the pulling action on the web 500 varies.

[0048] The connection group 4 is in fact suitable for keeping the arm 30, and therefore the roller 35, in an initial position and is suitable for allowing for avariation in the angular position of the roller 35, and therefore of the arm 30, as the rotary action varies.

[0049] The connection group 4 is preferably suitable for allowing for a variation in the angular position of the roller 35 as the rotary action increases.

[0050] According to a preferred embodiment, said initial position of the roller 35 corresponds to a raised position.

[0051] According to a preferred embodiment, said angularly varied position of the roller 35 corresponds to a lowered position.

[0052] In other words, according to a preferred embodiment, the lowering of the roller 35 is also favoured by the action of the force of gravity.

[0053] Preferably, in accordance with a preferred embodiment, the web 500 extends about the roller 35, thus forming an eyelet, preferably engaging said roller 35 for about half of the circumference thereof.

[0054] Furthermore, according to the present invention, the connection group 4 comprises a clutch device 49 engaged, by means of a friction action, with the mandrel shaft 20.

[0055] According to the present invention, the clutch device 49 performs a starting friction action corresponding to a high rotary action. According to the present invention, the clutch device 49 varies saidfriction action as the rotation speed whereto the mandrel shaft 20 is subjected varies.

[0056] High rotation speeds of the mandrel shaft 20 correspond to high friction. A lower rotation speed of the mandrel shaft 20 corresponds to lower friction.

[0057] As the action of the clutch device 49 varies, there is a corresponding variation in the angular position of the arm 30 which is suitable for modifying the path taken by the web 500.

[0058] According to a preferred embodiment, the clutch device 49 comprises a plurality of clutch discs 490, 491,492 that are concentric to the rewinding axis R-R.

[0059] Preferably, at least one clutch disc 492 is integrally connected to the mandrel shaft 20. Depending upon the intensity of the action on said clutch disc 492, a greater or lesser friction action of the disc integrally connected to the mandrel shaft 20 is permitted.

[0060] According to a preferred embodiment, at least one clutch disc 491 is made of a plastics material.

[0061] According to a preferred embodiment, the clutch disc491 is made of reinforced PTFE.

[0062] Preferably, the clutch device 49 is arranged at an axial end of the mandrel shaft 20.

[0063] Preferably, the arm 30 is arranged within a regionthat is axially distal from the clutch device 49.

[0064] According to one embodiment variant, the clutch device 49 also comprises a cooling element 495 comprising a plurality of fins that are suitable for promoting the cooling of the clutch discs 490, 491, 492.

[0065] According to a preferred embodiment, the connection group 4 comprises a connection device 40 operatively connected to the clutch device 49 and to the arm 30.

[0066] In other words, the connection device 40 is arranged along the rewinding axis R-R between the arm 30 and the clutch device 49.

[0067] Furthermore, according to a preferred embodiment, the connection group 4 comprises an elastic member 45 which acts upon the connection device 40 performing an action that positions the arm 30 in a normally initial, preferably raised, position.

[0068] According to a preferred embodiment, the elastic member 45 is a helical spring 450. One end of the helical spring 450 is therefore engaged with the connection device 40.

[0069] The connection device 40 preferably extends about and along the rewinding axis R-R.

[0070] Preferably, the connection device 40 extends about the mandrel shaft 20.

[0071] Preferably, the connection device 40 is rotatablewith respect to said rewinding axis R-R. Preferably, the arm group 3 extends from the connection device 40 in a substantially radial direction.

[0072] According to a preferred embodiment, the connection device 40 comprises a first connection group 41 engaged with the arm 30 and a second connection group 42 engaged with the elastic member 45 and with the clutch device 49.

[0073] According to a preferred embodiment, the connection device 40 comprises connection means 43 that are suitable for operatively connecting the first connection group 41 to the second connection group 42.

[0074] Preferably, the connection device 40 operates as a cam member, and the relative angular position of the first group 41 and the second group 42 results in a different axial action between the two.

[0075] According to a preferred embodiment, the first group41 comprises a first face 410 and the second group 42 comprises a second face 420, which faces are mutually facing along the rewinding axis R-R, and the connection means 43 are suitable for operating upon said faces.

[0076] According to a preferred embodiment, the first face410 has one or more inclined planes of an inclination angle α.

[0077] According to a preferred embodiment, the second face420 has one or more inclined planes with an inclinationangle α.

[0078] According to a preferred embodiment, the inclination angle α is inclined with respect to a radial direction.

[0079] According to a preferred embodiment, the inclination angle a is inclined with respect to a circumferential direction.

[0080] According to a preferred embodiment, the inclination angle a is inclined both with respect to a radial direction and with respect to a circumferential direction.

[0081] According to a preferred embodiment, the connection means 43 comprise at least one sliding element 430 that slides upon the first face 410 and upon the second face420 in such a way as to perform an action in the axial direction from the first group 41 to the second group 42.

[0082] Preferably, as the rotary action of the mandrel shaft 20 varies and affects the friction action of the clutch device 49, the action of the elastic member 45 is overcome by the connection device 40 and therefore the shaft assembly 3 is consequently lowered.

[0083] In other words, the connection means 43 are suitable, upon the actuation of the clutch device 49, for at least partially overcoming the action of the elastic member 45 and for modifying the position of the arm group3. In particular, the connection means 43 are suitable,upon the actuation of the clutch device 49, for at least partially overcoming the action of the elastic member 45 and for decreasing the friction action between the discs of the clutch device 49 in such a way as to allow for faster rotation of the mandrel shaft 20.

[0084] Variations in the speed of rotation of the mandrel assembly, for example due to the variable actuation of the web, therefore result in an alternation in the friction action of the clutch device which in turn results in a change in the angular position of the arm : sometimes in a first direction, insofar as the rotary action prevails with respect to the action of the elastic member, sometimes in a second direction, insofar as the action of the elastic member prevails with respect to the rotary action.

[0085] According to a preferred embodiment, the connection means 43 comprise a plurality of sliding elements 430 equally spaced apart angularly from one another.

[0086] Preferably, the first face 410 and / or the second face 420 comprise a plurality of inclined planes.Preferably, each sliding element 430 operates upon a respective inclined plane.

[0087] According to a preferred embodiment, the sliding element 430 comprises a shaft 431 and at least one wheel432, which rotates with respect to said shaft 431.

[0088] The shaft 431 preferably extends radially.

[0089] Preferably, a plurality of wheels 432, for example three, is mounted on a shaft 431.

[0090] According to one preferred embodiment, the connection means 43 comprise a spacer member 435 engaged with the first group 41 and the second group 42.

[0091] Preferably, said spacer member 435 is axially adjustable to adjust the axial distance between the first group 41 and the second group 42.

[0092] According to a preferred embodiment, the spacer member 435 is engaged with the first group 41 and with the second group 42 by means of specific threaded couplings. Preferably, by operating upon said threaded couplings, the distance between the first group 41 and the second group 42 may be adjusted.

[0093] Preferably, the connection means 43 also comprise a support disc 439 that is suitable for supporting the sliding element 430 or, if provided, the sliding elements430.

[0094] According to a preferred embodiment, the first group41 comprises a first disc element 411 which comprises the first face 410.

[0095] According to a preferred embodiment, the second group 42 comprises a second disc element 412 which comprises the second face 420.

[0096] In other words, the connection means 43 are sandwiched between the first disc element 411 and the second disc element 412.

[0097] According to a preferred embodiment, said disc elements have a substantially radial extension with respect to the rewinding axis R-R.

[0098] Preferably, said disc elements are stand-alone elements or are portions of more complex components which, for example, comprise elements with an axial extension along the rewinding axis R-R.

[0099] Preferably, in fact, the first group 41 comprises a first hollow shaft 415, which extends along the rewinding axis R-R, wherein the arm group 3 is engaged with said hollow shaft 415.

[0100] Preferably, in fact, the second group 42 comprises a second hollow shaft 425 extending along the rewinding axis R-R, wherein the second hollow shaft 425 engages with the clutch device 49 at one end.

[0101] Innovatively, the rewinding assembly fully fulfills the intended object in overcoming the typical problems of the prior art. Advantageously, the system which comprises said rewinding assembly also fully fulfills the intended object in overcoming the typical problems of the prior art.

[0102] Advantageously, in fact, the rewinding assemblyis suitable for managing the rotation and rewinding of the processed web in a simple and effective manner.

[0103] Advantageously, it is the rewinding assembly itself that adapts to the rotary action and adjusts the"demand" for the web by moving the arm group.

[0104] Advantageously, the rewinding assembly is the pulling of the web as a function of the guided rotary action that drives it and therefore according to the requirements .

[0105] Advantageously, the rewinding assembly performs"adjusted" and not free rewinding. That is to say that, advantageously, the rewinding assembly autonomously manages the rewinding of the web by adapting to the operating modes whereto the web is subjected.

[0106] Advantageously, the rewinding assembly winds the required amount of web, thereby preventing the possibility of rolling more than necessary.

[0107] Advantageously, the rewinding assembly is suitable for performing the rewinding action in a simplified and controlled manner at both high and low speeds, effectively also managing any transients.

[0108] Advantageously, by being self-adjusting with regard to rewinding operations, the rewinding assembly avoids situations wherein it performs excessive pulls on the web and situations wherein it performs insufficientpulling on the web.

[0109] Advantageously, the rewinding assembly is suitable for performing the winding action in such a way as to obtain a compact and perfectly structured reel.Advantageously, the rewinding assembly avoids winding the reel loosely . Advantageously, the rewinding assembly avoids winding the web with a conical effect.

[0110] Advantageously, the movement of the web is simplified .

[0111] Advantageously, the risk of breakage of the web subjected to the winding operations is minimized.

[0112] Advantageously, multiple complexities typical of the known rewinding assemblies and known systems are resolved.

[0113] Advantageously, multiple heating points of the known rewinding assemblies and known systems are resolved.

[0114] Advantageously, the rewinding assembly is easily adjustable and adaptable to different webs.

[0115] Advantageously, the rewinding assembly is particularly advantageous in the form of application thereof, wherein it is included in a labeling system and is extremely flexible, as well as adaptable to being used with labels of different sizes.

[0116] Advantageously, the rewinding assembly isparticularly suitable for performing fast web movements.

[0117] Advantageously, maintenance and / or assembly and / or disassembly operations of the rewinding assembly are extremely simplified.

[0118] Advantageously, the aforementioned circumstantial advantages for the rewinding assembly are equally present within the system. Advantageously, in a labeling system, these advantages are even more present.

[0119] It is clear that a person skilled in the art may make changes to the invention described above in order to meet contingent needs, which changes all fall within the scope of protection as defined in the following claims.

Claims

CLAIMS1. A rewinding assembly (1) for a system (900) which performs operations on a web (500) comprising an unwinding assembly (910) suitable for housing a reel of web (500), an operating assembly (920) suitable for performing an operation on the web (500), a pulling assembly (950) suitable for pulling the web (500) to be processed, wherein the rewinding assembly (1) comprises: i) a mandrel group (2) suitable for housing a reel of processed web (500), wherein the mandrel group (2) extends with respect to a rewinding axis (R-R) and comprises a mandrel shaft (20) to be driven in rotation for rewinding the web (500); ii) an arm group (3) comprising an arm (30) extending in the radial direction with respect to the rewinding axis(R-R) and a roller (35) positioned at the end of the arm(30) distal from the rewinding axis (R-R), wherein the roller (35) extends along a roller axis (X-X) substantially parallel to the rewinding axis (R-R) and the web (500) is unwound onto said roller (35) toward the reel; a connection group (4) suitable for connect the mandrel shaft (20) with the arm (30), wherein the connection group (4) is suitable for driving in rotation the mandrel shaft (20) and is engaged with the arm (30)so that the arm (30) is movable in an angular direction as the rotary action on the mandrel shaft (20) varies, wherein the connection group (4) comprises a clutch device (49) engaged, by means of a friction action, with the mandrel shaft (20) and suitable for varying said friction action as the rotation speed of the mandrel shaft (20) varies and, as said friction action varies, is suitable for varying the angular position of the arm (30) between an initial position and a varied angular position so as to vary the path of the web (500) unwinding onto the roller (35).

2. Rewinding assembly (1) according to claim 1, wherein the connection group (4) comprises a connection device(40) operatively connected to the clutch device (49) and to the arm (30), and an elastic member (45) which acts on the connection device (40) performing an action that positions the arm (30) in a normally starting position.

3. Rewinding assembly (1) according to claim 2, wherein the elastic member (45) is a helical spring (450).

4. Rewinding assembly (1) according to claim 2 or claim3, wherein the connection device (40) comprises a first connection group (41) engaged with the arm (30) and a second connection group (42) engaged with the elastic member (45) and the clutch device (49), and connection means (43) suitable for operatively connecting the firstconnection group (41) to the second connection group(42).

5. Rewinding assembly (1) according to claim 4, wherein the first group (41) comprises a first face (410) and the second group (42) comprises a second face (420), mutually facing along the rewinding axis (R-R), wherein the first face (410) and / or the second face (420) comprises one or more planes inclined by an inclination angle (a), wherein the connection means (43) comprise at least one sliding element (430), preferably a plurality of sliding elements(430) angularly equally spaced apart from one another, which slides on the first face (410) and the second face(420) so as to perform a pushing action in the axial direction from the first group (41) to the second group(42) as a function of which the friction action of the clutch device (49) is varied and the angular position of the arm (30) is varied overcoming the action of the elastic member (45).

6. Rewinding assembly (1) according to claim 5, wherein the inclination angle (a) is inclined with respect to a radial direction and / or is inclined with respect to a circumferential direction.

7. Rewinding assembly (1) according to claim 5 or claim6, wherein the sliding element (430) comprises a shaft(431) and at least one wheel (432) which rotates withrespect to said shaft (431).

8. Rewinding assembly (1) according to any one of claims5 to 7, wherein the connection means (43) comprise a spacer member (435) engaged with the first group (41) and the second group (42), wherein the spacer member (435) is axially adjustable to adjust the axial distance between first group (41) and second group (42).

9. Rewinding assembly (1) according to any one of claims4 to 8, wherein the first group (41) comprises a first disc element (411) comprising the first face (410) and the second group (42) comprises a second disc element(412) comprising the second face (420).

10. Rewinding assembly (1) according to any one of the preceding claims, wherein the connection group (4) is suitable for keeping the arm (30) in the initial position corresponding to a raised position of the roller (35) so that the friction action of the clutch device (49) angularly moves the roller (35) which however, as it lowers, decreases the strength of the friction action of the clutch device (49).

11. Rewinding assembly (1) according to any one of the preceding claims, wherein the clutch device (49) comprises a plurality of clutch discs (490, 491, 492) being concentric on the rewinding axis (R-R), wherein a clutch disc (492) is integrally connected to the mandrelshaft (20).

12. Rewinding assembly (1) according to any one of the preceding claims , wherein the connection group (4) comprises a pulley (48) on which a drive member operates, preferably a belt or a chain or a toothed band, which transmits a rotary action that drives the rotation of the mandrel shaft (20).

13. A system (900) which performs operations on a web(500) comprising an unwinding assembly (910) suitable for housing a reel of web (500), an operating assembly (920) suitable for performing an operation on the web (500), a pulling assembly (950) suitable for pulling the web(500), and a rewinding assembly (1), according to any one of the preceding claims, suitable for rewinding the web(500), wherein the rewinding assembly (1) is operatively connected to the pulling assembly (950) so that the pulling assembly (950), in addition to performing the action of pulling the web (500), drives the rotation of the rewinding assembly (1).

14. System (900) according to claim 13 in combination with claim 12, comprising a drive member, preferably a belt or a chain or a toothed band, extending from the pulling assembly (950) to the pulley (48) enclosed in the rewinding assembly (1).

15. System (900) according to claim 13 or claim 14,wherein the operating assembly (920) performs labeling operations, wherein the reel housed on the unwinding assembly (910) comprises a web (500) to be processed with labels and the reel on the rewinding assembly (1) comprises a processed web (500) without labels.

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