ES2291435T3 - WINDER FOR FILM OF ELASTIC MATERIAL. - Google Patents

Abstract

Winder (1) for plastic film comprising: - thrust assemblies or handles to feed the film (3) to a winding area in which the film is wound in at least two mandrels (10) supported by a spindle (8) that can rotate around its own axis, for the formation of rolls (80). - spindle support means for supporting the spindle (8) in said winding zone, - pressure control means (11, 25) for controlling the pressure of the film (3) in the roll (80) being formed during winding, - spindle loading means (30, 40) suitable for loading a spindle with empty mandrels (10) from a feed store (60) to the winder, - spindle unloading means (20) suitable for unloading the spindle with the rolls formed from the winder (1) to the feed store (60) and - cutting means (50) suitable for cutting the film (3) transversely once at least one pair of rolls (80) they have been completed in the spindle (8) that must be unloaded to the feed store (60), characterized in that - said spindle support means comprise at least two forks (9) fixedly mounted on the shoulders (2) of the structure of the machine, so that the roll (80) allows it is in the same position from the beginning to the end of its formation and the spindle (8) is supported by at least five forks (9, 23) to achieve a good rigidity of the system to achieve high spindle rotation speeds and - said Pressure control means comprise at least one first roller (14) mounted so that it can be moved to accommodate the increase in diameter of the roll (80) being formed in the winding area and a second roller (25) mounted in connecting rods and that can be moved to adapt to the increase in diameter of the roll (80) that is being formed, used in the change stage.

Description

Material film winder plastic.

The present invention relates to a winder for plastic film.

The winders are normally used for roll material into films, bands or layers in mandrels to Get rolls of laminated material suitable for sale. For this reason the winders are normally positioned downstream of a extrusion set to roll the film out of a head Extrusion

Winders in EP 0.994.820 are announced (which should be considered as the most similar prior art), EP 0.943.569 and EP 0.767.123.

Currently, two types of winders: turret type winder and winder Contact.

The turret type winder, also known As a carousel winder or revolver, it has a rotating cage with horizontal axis that peripherally supports at least two spindles or chucks (one in a loading position and the other in a position of winding) in which the mandrels for the rolled up When the spindle is in the winding position, it is rotated around its own axis to wind the film in the mandrels to form the rolls. When rolling a roller pressure or roller compactor is in contact with the roll that is being formed, to control the pressure on the film, preventing air from entering the gaps between the turns of the film that is rolled on the roll. The pressure roller moves to adapt to the growth in diameter of the roll that is being forming

Once the roll formation is completed, the change stage takes place in which the cage is rotated around its own axis and a new spindle, preloaded with empty mandrels, moves from the loading position to the position of winding, while the spindle with the rolls completed is moves from the winding position to a discharge position in which the rollers are prepared to be unloaded from the winder During this change stage, the pressure roller will moves away from almost formed rolls and the film is cut to be rolled in the new mandrels.

This turret type winder has the disadvantage that, during the change stage, the pressure roller  it separates from the rolls that are being formed, and consequently the roll pressure is not controlled in the last turns, with the result of having rolls with the rolled film irregularly, jeopardizing the real quality of the movie.

This disadvantage has been partially resolved by providing a second pressure roller that intervenes during the change stage to accompany the roll formed from the winding position to the position of discharge.

In any case the turret type winder has disadvantages from the point of view of the speed of production that cannot be increased beyond a certain limit. Increasing the speed of rotation around the axis of the spindle, the critical speed at which the spindle starts to vibrate On the other hand it is somewhat complicated to provide a proper spindle stabilization system in the cage swivel

In addition the turret type winder has structural and construction difficulties due to large inertial masses that must be moved during the rotation of the cage to Spindle change. In addition the turret type winder is overloaded by the use of electrified motors by a collector of brushes and integrally mounted in the cage to rotate the Spindle during winding. In addition to the use of other types of engine it is inappropriate due to the wiring to the relative motors that It would hamper the cage's turn.

The contact winder has a drum motorized that revolves around its own horizontal axis. A spindle with preloaded mandrels is taken from a position loading to a winding position where the mandrels are in contact with the drum which, when rotated, causes the winding of the film on the mandrels for the formation of the rolls. During the winding the drum remains fixed in position and the spindle is supported by a mobile support to move into position to adjust to the increase in diameter of the roll being forming Once the roll has been completed, the spindle is moved to a roll unloading position and a new spindle with Preloaded mandrels are placed in the winding position.

The contact winder has the main disadvantage of not allowing adequate control of the pressure in the roll during winding. In the stage of change, when a new spindle is taken from the loading position to the position of rolled up, there is no pressure control on the roll. Consequently the first turns of the roll have the risk of present imperfections that will affect the entire roll.

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An object of the present invention is to eliminate the disadvantages of the prior art, providing a plastic film winder that is extremely effective and that can allow high production speed.

Another object of the present invention is providing said winder for plastic film which  Can guarantee high quality of the rolls produced.

Still another object of the present invention is Provide one kind of winding machine for material film plastic that has a simple and compact structure, and at the same stable and safe time.

These objects are achieved according to the invention. with the characteristics set forth in the independent claim  one.

The advantageous embodiments of the invention are disclosed in the dependent claims.

The winder for plastic film according to the invention comprises:

- drag sets to feed the film towards a winding area where the film is wound on at least one mandrel supported by a spindle suitable to rotate around its own axis for the formation of rolls,

- spindle support means to support and reinforce the spindle in the winding area,

- pressure control means to control the film pressure rolled on the roll being formed during winding,

- spindle loading means for loading a spindle with empty chucks from a feed store to the winder, keeping the spindle fixed in a position of job,

- spindle discharge means suitable for unload the spindle with the rolls formed from the winder to food store, and

- suitable cutting means for cutting the film transversely once the spindle roll that must be downloaded to the feed store has been completed

Particularly the spindle support means they comprise at least two forks fixedly mounted on the shoulders of the machine structure, and three other forks (two lateral and one central) positioned on the cranks respective, and the pressure control means comprise minus a roller mounted so that it can be moved to follow the increase in diameter of the roll that is being formed in the winding area

This type of solution has the advantage of having a spindle mounted so that it can rotate on the shoulders of the machine structure and therefore remains fixed in its position, along the winding. However the means of pressure control move during winding to fit the growth in diameter of the rolls.

The advantages of the present invention are clarified in the present description. This solution not only allows high spindle stabilization to have high turning speeds of the spindle during winding, but also allows you to control the pressure on the roll during the winding stage. The movement of the connecting rods also allow a reduced cycle time and particularly a cycle time of less than 30 seconds.

The additional features of the invention will be clarified in the following detailed description, with reference to a purely exemplary embodiment and therefore not limiting it, illustrated in the attached figures, in the that:

Figure 1 is a side elevation view that schematically illustrates the winder according to the invention with a downstream feed store to supply the chucks and unload the formed rolls;

Figure 2 is a schematic elevation view side of the winder of Figure 1, in which some elements have been omitted for clarity;

Figure 3 is a schematic front view of the winder of Figure 2;

Figures 4-6 are views schematic side elevation showing the winder of the Figure 2 in several stages of the work cycle;

Figure 7 is a schematic sectional view. detailed in side elevation showing the winder with the downstream feed store to feed the chucks and download the rolls while downloading the rolls formed.

The winder for plastic film according to the invention, denoted as a set by the number of Reference 1 is described with the help of the figures. Further, even if some elements are shown and denoted independently, it should be understood that they are arranged in pairs, one on each side of the machine.

With particular reference to Figures 1, 2 and 3, the winder 1 comprises a main structure formed by an integral base with the ground and two sides or shoulders 2. A band or film 3, which comes from an extrusion head placed waters above the winder 1, enters the winder 1 and is directed by means of an extender roller or stretcher roller 4 arranged transversely at the back and top of the shoulders 2. The extender roller 4 can produce forces transverse to the 3 film to eliminate any longitudinal wrinkle.

Next, movie 3 is fed by 5A and 5B motorized drive roller means and guided by the Crazy rollers 6A and 6B. In contact with the drive rollers 5A, 5B the respective pressure rollers 7A, 7B are provided, mounted on oscillating arms to regulate the drag or thrust of the movie 3.

The movie 3 that leaves the crazy roller 6B is wound around mandrels 10 (Figure 3) supported by a spindle 8. Spindle 8 is supported so that it can rotate by the structure of the machine in a working position or of rolled up As best shown in Figures 2 and 3, the spindle 8 in the working position is supported by its ends by the integral forks 9 with the shoulders or sides 2 of the machine structure Each fork 9 has a pair of teeth 16 suitable for retaining spindle 8 in the position of rolled up

Returning to Figures 1 and 2, upstream of the spindle 8, in the working position, a first is provided compactor roller 11, mounted so that it can rotate in a pair of arms 12 articulated to the shoulders 2 of the machine. Arm 12 it is displaced by a linear actuator 13 articulated to structure 2 of the machine The linear actuator 13 pushes the arm 12 towards the chucks 10 supported by spindle 8 in the working position, so that the first compactor roller 11 exerts a pressure on the band 3 of the roll being formed, preventing the formation of air in the turns of the roll.

Also on the arms 12 there is a roller mounted pressure 14 that presses compactor roller 11 to stretch the band 3 that passes in the gap between the pressure roller 14 and the first compactor roller 11 before winding on the chucks 10 supported by the spindle in the winding area.

On the front of the shoulders 2 of the machine there is mounted a connecting rod assembly 20. As is shown in Figure 3, the connecting rod assembly 20 comprises three arms (two lateral arms 21 and a central arm 21 ') mounted on a bar 22 arranged transversely to the sides 2 of the structure of the machine and mounted so that it can rotate around its own axis.

At the free end of each arm 21, 21 'of the connecting rod assembly 20 a fork 23 is provided, Suitable for supporting a spindle. On each arm 21, above the fork 23, a tooth 24 is mounted, suitable for retaining the spindle on the fork 23.

The rod 22 of the connecting rod assembly is driven by a motor to rotate around its own axis. From in this way the discharge connecting rod assembly 20 can move from a working position in which the forks 23 act as additional support for spindle 8 in the winding position, to a discharge position in which the spindle 8 is discharged, with the relative formed rollers, to a feed store 60 which is will be described in detail later in the present specification. At path from the winding position to the unloading position, the spindle 8 is retained by the tooth 24 in the forks 23 of the connecting rod set 20.

As shown in Figure 3, you must indicate that when spindle 8 is in the working position, the connecting rod assembly 20 is also in the position of job. In this case the two lateral arms 21 support the extreme parts of the spindle 8 and the central arm 21 'supports the central part of the spindle 8. In this situation the spindle 8 is supported on five support forks, that is, both forks 9 of the shoulders 2 of the machine structure and the three forks 23 of the connecting rod assembly 20.

As a result, spindle 8 is highly stabilized and therefore its bending speed is increased criticism to which the vibrations appear. Consequently, the Spindle 8, with a minimum working length of 2 meters, can work at high turning speeds with the possibility of getting the winding of band 3 at a speed of approximately 800 m per minute.

As shown in Figure 1, the assembly discharge rod 20 also has a second compactor roller 25. The second compactor roller 25 is mounted so that it can rotate in a sliding element 26. The sliding element 26 is mounted so that it can slide on the guides longitudinal 27 provided in the arms 21 of the connecting rod assembly of discharge. In this way the second compactor roller 25 can be  moved to its position by means of the translation of the element slide 26, to adapt to the growth in roll diameter 80 that is being formed and to control the pressure on the roll 80 during the change and discharge stages.

The second compactor roller 25 has a brake 28 to stop its rotation and therefore the roll 80 roll when The winding has been completed.

Again as shown in Figure 1, under the winding forks 9 of the shoulders 2, between the arm 12 of the first compactor roller 11 and the connecting rod assembly of discharge 20, a cutting assembly 50 is provided, mounted on so that it can slide in arms 2 of the structure of the machine. In this way the cutting assembly 50 can move from a lower resting position to a higher position of cut in which it performs the cross section of the band 3.

For this purpose, the cutting assembly 50 It has a cutting blade 51 for cross-cutting from movie 3, once a roll 80 has been completed. He cutting assembly 50 also comprises an electrostatic bar 52 suitable to generate an electric field to cause adhesion of the film cut to the new mandrels for winding. From this way, the edge of the cut film adheres to the new mandrels in which it must be rolled without the need for Use glue or similar items.

Again on the front of the machine, there are provided with a connecting rod set 30. As shown in Figure 3, the connecting rod assembly 30 comprises two arms 31 mounted at the ends of a bar 32 arranged coaxially inside the bar 22 of the connecting rod assembly of discharge 20. Bar 32 of the connecting rod assembly is supported transversely on the sides 2 of the structure of the machine and is mounted so that it can revolve around its own shaft The arms 31 of the connecting rod assembly are longer than the arms 21 of the connecting rod assembly.

At the free end of each arm 31 of the power connecting rod assembly 30 a fork 33 is provided, Suitable for supporting a spindle. On each arm 31, above the fork 33, a tooth 34 is mounted, suitable for retaining the spindle on the fork 33.

Bar 32 of the connecting rod assembly It is powered by a motor to rotate around its own axis. In this way the power connecting rod assembly 30 can move from a feeding position where you take a spindle, with relative empty mandrels, of the warehouse feed 60 to a loading position where the spindle loads with the relative empty chucks in the winder 1, in a loading position, in which a connecting rod assembly is provided load 40.

The motors that drive bars 22 and 32 respectively of the connecting rod assembly 20 and the assembly Power crank 30 are brushless motors placed firmly on one of the shoulders 2 of the machine and driven by the motors respective.

The connecting rod assembly 40 is positioned on the winding forks 9 formed on shoulders 2 of the machine structure As shown in Figure 3, the load connecting rod set 40 comprises three arms (two arms sides 41 and a central arm 41 ') mounted on a bar 42 arranged transversely on the sides 2 of the structure of the machine and mounted so that it can revolve around its own axis. The arms 41, 41 'of the connecting rod assembly are shorter than the arms 21 of the connecting rod assembly.

At the free end of each side arm 41, and also at the end of the central arm 41 'of the connecting rod assembly of load 40, respective forks 43 are provided, suitable for support an 8 'spindle. On each side arm 41 above the fork 43 there is mounted a tooth 44, suitable for retaining the spindle on the fork 43. On the other hand, in the central arm 41 'there are provided with two teeth.

The bar 42 of the connecting rod assembly is driven by a motor or by an actuator to rotate around its own shaft In this way, the load connecting rod assembly 40 can move from a higher loading position where the Forks 23 support a spindle, with preloaded mandrels, which comes from the power connecting rod assembly 30 to a position bottom of work in which they deposit the spindle in the forks  9 of shoulders 2, that is, in the winding position.

It should be noted that, during winding, the load connecting rod assembly 40 may be in a working position. In this case the spindle 8 will be supported by eight forks, it is say the two forks 9 of the shoulders 2 of the machine, the three Forks 23 of the connecting rod assembly 20 and the three forks 43 of the load connecting rod assembly 40. As a result, the Spindle 8, with eight support points, is additionally stabilized and can spin at high speeds without reaching the critical speed at which oscillations appear.

As shown in Figure 1, in the load connecting rod assembly 40 there is provided a launch motor 45, suitable to cause spindle rotation 8, when in the forks 43 of arms 41, 41 'of the connecting rod assembly 40

As shown in Figure 1, downstream a feed store 60 is provided for the winder 1 feed the empty chucks 10 and to unload the rolls formed 80. The feed store 60 has a structure of support 61. In structure 61 there is an articulated surface 62 to feed the mandrels, which acts as a warehouse for mandrel feeding, in which the mandrels intended for Rolled up to form rolls are fed. The surface 62 has at one end a fork 63 suitable for supporting a plurality of coaxially arranged mandrels.

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The surface 62 is displaced by means of a linear actuator 64 mounted on structure 61. In this way the surface 62 can move from a horizontal position of feeding of mandrels to an oblique position of insertion of spindle in which the spindle is inserted into the chucks supported on fork 63 and spindle with empty chucks is taken by the connecting rods 30.

In structure 61, under the surface of mandrel feed 62, a horizontal support 65 is provided wherein the forks 66, suitable for supporting a spindle 8, They are mounted so that they can slide. The forks horizontal 66 are moved by means of a fixed linear actuator 67 on the support 61. In this way the horizontal forks 66 can move from an advanced position to the winder 1 in which they support the spindle 8 with the next formed roll from the connecting rods 20 to a retracted position of the winder 1, in which they take spindle 8 with the roll formed on a motorized platform 68.

Motorized platform 68 can move vertically from a higher position, in which it supports the rolls, to a lower position in which inclines the rolls 80 to a slide 69 to unload the formed rolls towards the storage. A linear actuator is provided for this purpose. 70 which allows to tilt the platform 68, when it is in the lower roll unloading position 80.

When the rolls 80 are supported by the platform 68 in an upper position, a device spindle extraction / insertion (not shown) intervenes and remove the spindle 8 from the formed rolls 80 and insert it into the chucks 10 that are supported on the fork 63 of the surface 62 to load the mandrels.

It should be noted that spindles are used expansion 8 which, when pressurized, increase in diameter to grab the mandrels and, when depressurized, decrease in diameter to allow removal of the mandrels. With this purpose the spindle extraction / insertion device must have, in addition to the means to support the spindle, also means to expel / feed air to expel air from the spindle in order to make it decrease in diameter during its extraction of the mandrels from the formed rolls and for feeding air to the spindle to make it grow in diameter after having inserted in the new chucks to ensure a good grip with the chucks.

Hereinafter, particularly with The help of Figures 4-9 describes the operation of the winder 1 according to the invention.

As shown in Figure 4, initially spindle 8 with preloaded mandrels 10 is in position load, denoted by A, supported by the connecting rod assembly 40. Load rods 20 (not shown in the figure) are separated from the compactor roller 11 at a distance suitable for allow the rotary movement of the load connecting rods 40 and the movement of the cutting blade 51 coming from below.

The launch engine 45 of the connecting rod assembly load 40 starts to turn spindle 8. The load connecting rod assembly 40 rotates around the support point F1 and the spindle 8 performs the circumference arc C1, moving from the loading position A to the winding position, denoted by B, in which it is supported by the forks 9 of the shoulders 2.

When the spindle is in the position of rolled makes contact with the first compactor roller 11. Consequently, the edge of the band 3 is cut by the blade of cut 51 and is forced to adhere to the mandrels 10 by means of the electric field generated by the electrostatic bar 52.

A spindle 8, already prepared with new chucks 10, is positioned on the load connecting rods 40. The pressure roller 11 is at rest. The cutting blade 51 and the electrostatic bar They are at rest.

Hereinafter, with reference to the Figure 5, describes the final stage of the winding and the beginning of the cycle of change

Roll 80 has reached the start diameter of the cycle of change. The new spindle 8 'on the load connecting rods 40 is launched at line speed by the launch engine of spindle 45. The pressure roller 14 on the discharge rods 20 is launched at line speed by means of the appropriate engine and forced to contact roll 80.

Hereinafter, with reference to Figure 6, Describe the roll change stage.

The connecting rods 20, when turning around its support point 22, start the rotary discharge movement. The compactor roller 25 and the pressure roller 11 maintain the contact with roll 80 until the maximum interval is reached of the pressure roller stroke 11.

The electrostatic bar is activated. Connecting rods of discharge 20 continue their rotary movement until reaching a enough gap to introduce the new spindle 8 'driven from up by the connecting rods 40 and the cutting blade 51 from down.

The new spindle 8 'starts the race descending to the work position. Having made contact the  mandrel 10 'of the new spindle 8' with the pressure roller 11, the upward stroke of the cutting device 50 begins and the film 3 is cut by the cutting blade 51. Consequently the cutting device 50 descends back to the position of rest and the electrostatic bar 52 is deactivated.

The roller 25 of the connecting rods Discharge 20 is braked, causing the roll rotation to stop formed 80.

The download stage is described below. of the roll with reference to Figure 7.

The 20 connecting rods restart their rotating discharge movement, depositing the roll formed 80 in  horizontal unloading forks 66 of the warehouse power 6. Linear actuators 67 drive the translation from horizontal forks 66 to the unloading position, denoted by C, allowing return of the connecting rods 20 towards work position B.

Once the 20 connecting rods have returned to work position B, the load connecting rods 40 are they raise again to the waiting position A and receive a third 8 '' spindle prepared with new 10 '' chucks transported by the connecting rods 30 that perform a rotating movement around the foothold 22.

Platform 68 rises to support the formed rolls 80 that are in the discharge position C, to then the spindle 8 is deflated and removed from the rolls 80 supported by the respective mandrels 10. At this point, the platform 68 descends to the height of the discharge slide 69 and, leaning, expel the formed rolls 80 to the slide of the Discharge feed store.

Subsequently the feeding surface of mandrels 62 is inclined by means of actuator 64, so that the spindle 8 removed from the formed rolls 80 is inserted into the mandrels 10 arranged on the fork 63 of the surface of mandrel feeding and is inflated inside them. Then the connecting rods 30 take the spindle 8 with the new mandrels 10 and return it to the waiting position. Finally, the mandrel feed surface 62 returns to a superior position

Numerous modifications of detail and variations within the scope of an expert in the field can be made  to the present embodiment of the invention, without thereby move away from the scope of the invention as set forth in the attached claims.

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References cited in the description

This list of references cited by the Applicant is solely for the convenience of the reader. The same no It is part of the European patent document. Although it has Be very careful during the collection of references, not errors or omissions should be excluded and in this regard the EPO (European Patent Office) disclaims all liability.

Patent documents cited in the description

EP 0994820 A

EP 0943569 A

EP 0767123 A

Claims (11)

1. Winder (1) for material film plastic comprising:

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push sets or handles for feed the film (3) to a winding area where the film is rolled in at least two mandrels (10) supported by a spindle (8) that can rotate around its own axis, to roll formation (80).

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media spindle support to support the spindle (8) in said area of rolled up

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media pressure control (11, 25) to control the pressure of the film (3) in the roll (80) that is being formed during the rolled up

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media of spindle load (30, 40) suitable for loading a spindle with empty chucks (10) from a feed store (60) to the winder,

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media spindle discharge (20) suitable for unloading the spindle with the rolls formed from the winder (1) to the storage warehouse power (60) and

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media cutting (50) suitable for cutting the film (3) transversely once at least a couple of rolls (80) have been completed in the spindle (8) that must be unloaded to the warehouse of power (60),

characterized because

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sayings spindle support means comprise at least two forks (9) fixedly mounted on the shoulders (2) of the structure of the machine, so that the roll (80) remains in it position from the beginning to the end of your training and the Spindle (8) is supported by at least five forks (9, 23) to get a good system rigidity to get high spindle speeds and

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sayings pressure control means comprise at least a first roller (14) mounted so that it can be moved to adapt to the increase in diameter of the roll (80) that is being formed in the winding area and a second roller (25) mounted on cranks and that can be moved to adapt to the increase in diameter of the roll (80) being formed, used in the stage of change.

2. Winding machine according to claim 1 characterized in that said spindle discharge means (20) comprise a connecting rod assembly (20) articulated to the shoulders (2) of the machine structure and provided with forks (23) with a tooth of retention (24) to take said spindle (8) from the winding zone and take it to the unloading area inside the feed store (6), in which said forks (23) of the unloading connecting rod assembly support the spindle ( 8) in the winding area to improve its stabilization during winding. 3. Winding machine according to claim 2 characterized in that said unloading connecting rod assembly (20) comprises three arms (21, 21 ') with respective forks (23) that are engaged in two lateral parts and in the central part of the spindle (8), said arms (21, 21 ') being integral with a bar (22) supported so that it can rotate at its ends by means of the shoulders (2) of the structure of the machine and is rotated around its own axis by Middle of an engine. 4. Winder according to claim 2 or claim 3 characterized in that said pressure control means (11, 25) comprise a first compactor roller (11) mounted so that it can rotate in the arms (12) articulated to the shoulders (2) ) of the structure of the machine and a second compactor roller (25) mounted so that it can rotate in a sliding element (26) that is moved in said discharge connecting rod assembly (20). 5. Winding machine according to claim 4 characterized in that said arms (12) of the first compactor roller (11) are moved by means of linear actuators (13) to adjust to the increase in diameter of the roll (80) being formed and in said arms (11) there is a pressure roller (14) mounted so that it can rotate that presses against the first compactor roller (11) to extend or stretch the film (3) that passes in the gap between said two rollers (11, 14) . 6. Winding machine according to any of the preceding claims, characterized in that said spindle loading means (30, 40) comprise:

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a power connecting rod assembly (30) articulated to the shoulders (2) of the structure of the machine and provided with forks (33) with retaining teeth (34) to take a spindle (8) with chucks voids (10) of said food store and take it to an area of the winder (1) for spindle loading, and

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a load connecting rod assembly (40) articulated to the shoulders (2) of the machine structure and provided with forks (43) with teeth retention (44) to take the spindle (8) with empty chucks (10) of said connecting rod assembly (20) in said area of Load the spindle of the winder and take it to the winding area in the forks (9) integral with the shoulders of the machine, in which said forks (43) of the load connecting rod assembly support the spindle (8) in the winding area to improve its stabilization during winding.

7. Winding machine according to claim 6, characterized in that said connecting rod assembly (30) comprises two arms (31) with respective forks (33) that are engaged in the two lateral parts of the spindle (8), said arms (31) being integral with a bar (32) supported so that it can rotate at its ends by means of the shoulders (2) of the machine structure and which is rotated around its own axis by means of a motor, in which said bar (32) of the connecting rod assembly is coaxial with the rod (22) of the download connecting rod assembly and in which said arms (31) of the feeding connecting rod assembly are longer than the arms (21) of the downloading connecting rod assembly. 8. Winding machine according to claim 7, characterized in that said rod (22) of the discharge connecting rod assembly and said rod (32) of the connecting rod assembly are rotated by means of a respective brushless motor mounted on one of the shoulders (2) of the machine and driven by respective engines. 9. Winding machine according to any one of claims 6 to 8, characterized in that said load connecting rod assembly (40) comprises three arms (41, 41 ') with respective forks (43) which are engaged in the two lateral parts and in the central part of the spindle (8), in which said arms (41, 41 ') are integral with a bar (42) supported so that it can rotate at its ends by means of the shoulders (2) of the machine structure and that spins around its own axis by means of a motor or actuator means. 10. Winder according to any of the preceding claims characterized in that said feed store (60) comprises a support structure (61) in which a surface (62) is articulated in which the empty mandrels (10) are fed, being provided a horizontal support (65) under said surface (61) in which the horizontal forks (66) are mounted so that they can slide to take the spindle (8) with the rolls formed (80) from the discharge position towards a powered platform (68) that can be moved vertically to tip the formed rolls (80) towards a slide (69) to unload the rolls. 11. Winding machine according to any of the preceding claims characterized in that said cutting means (50) comprise a cutting blade (51) for transversely cutting the film (3) and an electrostatic bar (52) to create adhesion of the cut edge of the film to cause its adhesion to the empty mandrel (10) without the use of glue, said cutting means being mounted so that they can be moved on the shoulders of the machine to change from a lower resting position to an upper cutting position.