IT201800005185A1 - AUTOMATIC CUTTER - Google Patents

Description

Description of the invention having as title:

"AUTOMATIC CUTTER"

FIELD OF APPLICATION

The present invention relates to an automatic cutter, in particular to an automatic cutter capable of cutting in at least a first horizontal direction and in at least a second vertical direction, a printed sheet or support, or the like. The present invention also relates to a method of cutting a printed sheet or support, or the like.

STATE OF THE TECHNIQUE

As is known, automatic cutters are used for cutting to size printed sheets or supports according to at least two directions, for example a first horizontal cutting direction and at least a second vertical cutting direction, which is normally directed substantially along the direction of sheet feed to the automatic cutter.

A known automatic cutter can, for example, have a bridge shape defined by two lateral sides between which a feed unit for the printed support to be cut, a horizontal cutting unit and a vertical cutting unit are positioned. These lateral sides can be joined by means of one or more crosspieces.

This feeding assembly can provide for example feed rollers for the printed support to be cut. The printed support to be cut can be picked up from a reel placed upstream of the power supply unit. This cutting unit in the horizontal direction can be provided, for example, with a blade movable in the horizontal direction, while the vertical cutting unit can be provided with one or more cutting devices in the vertical direction, that is substantially the feeding direction of the printed support.

As is also known, the printed support is equipped with one or more demarcation lines which are positioned parallel to the cutting line to be made and the automatic cutters comprise optical sensors that detect whether this desired cutting line is correctly aligned with the direction horizontal cutting, by reading the position of said demarcation lines.

In order to correct any misalignments of this cutting line of the printed support with respect to the horizontal direction, in known automatic cutters means of rotation of the horizontal cutting unit with respect to the printed support to be cut can be provided.

However, these means for adjusting the position of the horizontal cutting unit require significant structural interventions on the automatic cutter, are often not very efficient and increase the manufacturing complexity of the automatic cutter.

Other limitations of known automatic cutters concern, for example, the vertical cutting devices with which the vertical cutting unit is equipped, which often prove to be inflexible in terms of operation. In general, it is therefore desirable that the vertical cutting devices, equipped, for example, with a blade and counter-blade, can be used in a more flexible, practical and effective way than is currently the case.

Sometimes, in known automatic cutters, means are also provided for adjusting the transverse position of the vertical cutting devices, however, these means increase the complexity of the cutter and do not allow an operator, for example, to quickly position them, which can be carried out manually and any disengagement from the printed support.

The known automatic cutters are therefore rather complex and limited effective both as regards the alignment requirements of the printed support, in particular in the horizontal cutting direction, and as regards their flexibility and practicality of use, in particular for the cutting unit. vertical.

Other limitations and disadvantages of conventional solutions and technologies will be clear to a person skilled in the art upon reading the remainder of the present description with reference to the drawings and the description of the following embodiments, although it is understood that the description of the state of the technique related to the present description should not be considered an admission that what described here is already known from the state of the prior art.

There is therefore a need to improve an automatic cutter and a cutting method which can overcome at least one of the drawbacks of the known art.

An object of the present invention is therefore to provide an automatic cutter which is provided with effective means for adjusting the alignment of the printed sheet or support to be cut, in particular means for adjusting the position of at least the means or devices for feeding the printed support. , for example rollers or the like, thus leaving the horizontal cutting unit fixed in position, or providing for this horizontal cutting unit only the movement of a relative cutting blade or carriage in the horizontal direction.

In particular, therefore, the present invention has the purpose of realizing an automatic cutter provided with a cutting unit in the horizontal direction which is fixed and integral with the support structure of the automatic cutter and with sheet feeding means which are instead associated with a '' frame that can be rotated, or swiveled, with respect to the fixed horizontal cutting unit, so as to correct any misalignments of the cutting line in the horizontal direction. This frame can also support one or more vertical cutting devices of the printed support.

A further object of the invention is to provide an automatic cutter which is compact, effective and advantageously flexible for its use in different ways of adjusting the cut of the printed support fed to the automatic cutter.

A further object of the present invention is to provide an automatic cutter which does not require heavy structural interventions for the realization of the means for adjusting the alignment of the printed support, in particular along the horizontal cutting direction.

A further object of the present invention is to provide an effective, rapid and flexible method for cutting, in at least two orthogonal directions, a printed sheet or support, or the like.

In order to obviate the drawbacks of the known art and to obtain these and further objects and advantages, the Applicant has studied, tested and implemented the present invention.

EXPOSURE OF THE FOUND

The present invention is expressed and characterized in the independent claims. The dependent claims disclose other features of the present invention or variants of the main solution idea.

In accordance with the aforementioned purposes, an automatic cutter according to the present invention comprises: one or more devices for feeding at least one printed support to be cut according to at least one cutting line; such printed support is provided with at least one demarcation line positioned in proximity of said cutting line; at least one horizontal cutting unit, adapted to cut the printed support in at least a first horizontal direction; and one or more vertical cutting devices, adapted to cut said printed support in at least second vertical direction; and a plurality of sensors adapted to detect, by means of this demarcation line, if the cutting line of the printed support is aligned with this horizontal direction.

According to an aspect of the invention, this horizontal cutting unit is fixed and comprises at least one relative crosspiece fixed stably on the side sides of the automatic cutter and at least these devices for feeding the printed support are positioned on a frame hinged to a side board so as to defining an axis of oscillation of said frame and connected, on the other side bank, to an oscillation device configured to rotate said frame and therefore at least said feeding devices of the printed support around said axis and with respect to the fixed horizontal cutting unit, thus obtaining the alignment of the cut line of the printed support along the horizontal direction.

Advantageously, the present automatic cutter is therefore provided with one or more devices or means for feeding the printed support, for example rollers or the like, positioned on a frame whose position is adjustable by oscillation or rotation with respect to at least one side of the automatic cutter. , while the horizontal cutting unit remains fixed, i.e. it will be provided only with a cutting carriage movable in the horizontal direction. By means of this oscillation or rotation of the frame it is possible to adjust the position of the printed support to be cut in an effective, simple and precise way, in case of misalignment problems of the cutting line to be made with respect to the horizontal cutting direction.

Substantially therefore, unlike the known cutters, it is the printed support that is rotated to correct any problems of misalignment of the horizontal cutting line, while the horizontal cutting unit remains fixed.

This frame can comprise at least a first side where such one or more vertical cutting devices are aligned.

This frame can comprise at least a second side where such one or more feeding devices of the printed support to be cut are aligned.

In particular, this first supporting side of these vertical cutting devices must be parallel to this second supporting side of the feeding devices.

This frame may include end parts positioned inside these side banks and connected to the rest of the frame by windows made in these side banks.

This oscillation device can comprise a motor equipped with at least one eccentric pin to which a portion of the frame is connected. Such vertical cutting devices can comprise at least a cutting part provided with at least one blade and at least a driving part provided with a counter-blade; said cutting part and this dragging part can be separable and independent from each other.

The part of the cutting part can comprise at least one sliding shoe along a guide made on the frame, so that this cutting part can be translated in any position along this guide.

These vertical cutting devices can each comprise at least one actuator for approaching or moving away said cutting part to or from said dragging part; such cutting part can comprise at least one contrast roller provided in a central area of said blade and said driving part can comprise at least one driving roller provided in a central area of said counter-blade; said contrast roller and said dragging roller can be provided with lateral portions adapted to mutually come into contact when said cutting part and said dragging part are approached by means of said actuator.

A further object of the invention is a method of cutting a printed support by means of an automatic cutter, comprising: at least one feeding step of the printed support to be cut at least according to a cutting line, in which the frame carrying one or more printed media feed is aligned with a horizontal cutting direction, which is fixed; detecting the alignment of this cutting line with this horizontal cutting direction; the rotation, in one direction or the other, of the frame that supports such one or more feeding devices of the printed support so as to correct any misalignments of the cutting line, so that this cutting line is aligned with this horizontal direction , which remains fixed; horizontal cutting of said printed support along said cutting line; and vertical cutting of the printed support.

This vertical cut of the printed support can take place after realigning the frame with respect to the horizontal direction, which remains fixed.

These and other aspects, features and advantages of the present disclosure will be better understood with reference to the following description, the drawing tables and the attached claims. The drawing tables, which are integrated and forming part of the present description, illustrate some embodiments of the present object and, together with the description, aim to describe the principles of disclosure.

The various aspects and features described in the present disclosure can be applied individually where possible. These individual aspects, for example aspects and characteristics present in the description or in the attached dependent claims, can be the subject of divisional questions.

It should be noted that any aspect or characteristic that is found to be already known during the patenting procedure is intended not to be claimed and to be the subject of a disclaimer.

ILLUSTRATION OF DRAWINGS

These and other characteristics of the present invention will become clear from the following description of embodiments, provided by way of non-limiting example, with reference to the attached drawings in which:

- fig. 1 is an isometric view of an embodiment of the present automatic cutter;

- Figures 2a, 2b, 2c are top views which schematically illustrate a possible cutting sequence of a printed support;

- fig. 3 is an isometric view of a part of the present automatic cutter;

- fig. 4 is a side view of the present automatic cutter;

- Figures 5 a, 5b, 5c are top views illustrating three different positions of a frame that supports at least the power supply unit of the printed support to be cut;

- figures 6a, 6b 6c are views on a larger scale of the zones A, B, C of figures 5a, 5b, 5c;

- fig. 7 is a side view of a vertical cutting device;

- fig. 8 is a front view of the cutting device of fig. 7;

- fig. 9 is a front view of part of the automatic cutter showing three different configurations of as many vertical cutting devices;

- fig. 9a is a larger scale view of the area D of fig. 9.

To facilitate understanding, identical reference numbers have been used wherever possible to identify identical common elements in the figures. It should be understood that elements and features of one embodiment can be conveniently incorporated into other embodiments without further specification.

DESCRIPTION OF EMBODIMENTS

Reference will now be made in detail to the various embodiments of the invention, of which one or more examples are illustrated in the attached figures. Each example is provided by way of illustration of the invention and is not intended as a limitation thereof. For example, the features illustrated or described as being part of an embodiment may be adopted on, or in association with, other embodiments to produce a further embodiment. It is understood that the present invention will include these modifications and variations.

Before describing the embodiments, it is further clarified that the present description is not limited in its application to the construction and arrangement details of the components as described in the following description using the attached figures. The present disclosure may provide other embodiments and be embodied or practiced in various other ways. Furthermore, it is clarified that the phraseology and terminology used here is for descriptive purposes and should not be considered as limiting.

With reference to the attached drawings, see for example fig. 1 and fig. 2a, 2b, 2c, an automatic cutter 10 according to the present invention comprises at least two lateral sides 11 and 12 between which at least one horizontal cutting unit 14 is positioned, i.e. cutting in a first direction called in the sector "horizontal direction X" , and one or more vertical cutting devices 22, or cutting in a second direction called in the sector "vertical direction Y". This vertical direction Y can also be the feeding direction of a printed support F to be cut.

This printed support F includes a print S, for example an image, a writing, a set of images and / or writings, or other, which will be cut at least along a cutting line X1. This printed support F can also be cut along the cutting lines Y1 and Y2.

The printed support F could be a single sheet or could be formed by a sequence of prints S to be cut coming from a reel, which is unrolled immediately upstream of the automatic cutter 10.

At least one dividing line 36, or cut mark, is provided in the vicinity of the cutting line X1. This dividing line is parallel to the cutting line X1. For example, it is possible to foresee two dividing lines 36 close together and parallel to each other and to the cutting line X1.

The automatic cutter 10 is also provided with at least one pair of sensors 15, 15 ', for example optical sensors, capable of detecting the ends 71, 71' of this demarcation line 36, when for example the printed support F passes under a said sensors 15, 15 '.

These sensors 15, 15 'are aligned along the horizontal direction X. If, for example, the cutting line XI is not aligned with the horizontal direction X, which is always fixed, so that if the reading of these ends 71, 71' is not occurs simultaneously by means of said sensors 15, 15 ', it means that the cutting line XI is not aligned with the horizontal direction X.

In the case of fig. 2a, for example, when the printed support F is fed in the vertical direction Y, since the cutting line X1 has a misalignment, for example, of an angle a, the sensor 15 'will read the end 71' before the sensor 15 reads the end 71, whereby the automatic cutter 10 detects the misalignment.

These sensors 15 and 15 'are aligned along the X direction and can be translated, preferably manually, so as to adapt to the extension of the demarcation line 36 and thus be positioned at the ends 71 and 71' of this demarcation line 36 .

This horizontal cutting unit 14 is fixed and comprises a crosspiece 16, see also fig. 3, for example a suitably shaped bar or the like, which is stably fixed to both lateral sides 11 and 12 of the automatic cutter 10.

This crosspiece 16 is directed in the horizontal direction X and a cutting carriage 17 is positioned on it, carrying at least one cutting blade of the printed support F along the cutting line X1.

This cutting carriage 17 with relative cutting blade can be moved in said horizontal direction X from one side edge 11, 12 to the other side bank 12, 11 by means of a relative drive motor 18, see also fig. 4, equipped with suitable motion transmission elements.

At least one of the side panels 11 or 12 is associated with an interface 19 for managing and controlling the various functions of the automatic cutter 10, therefore for example the cutting modes in the horizontal direction X and / or in the vertical direction Y. This interface 19 can be for example a touchscreen or similar type panel.

The side rails 11 and 12 can also be mutually connected by crosspieces 20, 20 'and may also include wheels or other rolling elements 21 to allow the movement of the automatic cutter 10.

The automatic cutter 10 comprises one or more feeding devices 23 for the printed support F along this vertical direction Y, for example drive rollers or the like.

These feeding devices 23 can be driven by a relative motor 24 and each of them can comprise at least a pair of rollers 25 and 26 of which at least one roller, for example the roller 26, is connected to said motor 24. Therefore, for example , all the rollers 26 of the various feeding devices 23 can be arranged in line and be driven by this motor 24, so as to drag the printed support F towards the horizontal cutting unit 14 and then towards the vertical cutting devices 22.

These rollers 25 and 26 can be approached or moved away from each other by means of a suitable adjustment device, for example a compressed air actuator or the like.

The automatic cutter 10 according to the invention comprises a support frame 27 for at least said feeding devices 23, which can be aligned for example on one side 39 of the frame 27, see also fig. 5a, 5b, 5c.

This side 39 can be formed by one or more bars or guides suitably shaped and substantially vertically aligned.

In particular, the frame 27 comprises a first end part 28 which is hinged on a first side wall of the automatic cutter 10, for example the side wall 11, so as to define a rotation axis V, and a second end part 29 which it is connected to an oscillation device 30, configured to rotate said frame 27 and therefore at least said feeding devices 23 with respect to said rotation axis V.

The first terminal part 28 of the frame 27 can be hinged to the side edge 11 by engaging a protruding part 13 by means of a rotation pin, see fig. 5a, fig. 5b, fig. 5c, of said first end part 28 with part of said side wall 11, for example a part underneath said protruding part.

This oscillation device 30 can comprise for example a motor 31 adapted to rotate an eccentric pin 35 to which the terminal part 29 of the frame 27 is associated. This eccentric pin 35 can be associated, for example, with a disk 32, or other support.

This second end part 29 of the frame 27 may include, for example, a portion 33, for example a protruding flap or the like, see figures 5a-5c or 6a-6c, provided with a slot 34 in which the eccentric pin 35 can be positioned.

The vertical cutting devices 22 can be arranged on a further side 38 of the frame 27. This side 39 can be formed by one or more bars or guides suitably shaped and substantially vertically aligned. The side 38 on which the vertical cutting devices 22 are aligned and the side 39 on which the feeding devices 23 are arranged can be parallel to each other. The end parts 28 and 29 of the frame 27 can also be parallel to each other.

The end parts 28 and 29 of the frame 27 may include for example comics 40 and 41, see for example the frame 41 of fig. 4, between which an opening 37 is obtained.

This frame 41 allows, for example, the correct positioning of the frame 27 without interfering with the motor 18 driving the cutting carriage 17 of the horizontal cutting unit 14.

These end parts 28 and 29 of the frame 27 are then joined by means of these sides 38 and 39.

The sides 38 and 39 of the frame 27 can partially pass through, on both lateral sides 11 and 12, windows 42 and 43 of suitable width L, such as to allow the desired oscillation of the frame 27 and therefore at least of the feeding devices 23 of the printed media F in one direction or the other and with respect to the V axis.

In particular, the width L of these windows 42 and 43 must be greater than the width of the sides 39 and 39 of the frame 27.

In particular, the end parts 28 and 29 of the frame 27 are arranged inside the relative side wall 11 and 12, therefore on one side of a panel 44 and 45 of this side wall 11 and 12, while these sides 38 and 39 are arranged mainly in the space defined between said side walls 11 and 12. The horizontal cutting unit 14 is instead firmly fixed to both side walls 11 and 12, see in particular the aforementioned cross member 16.

An example of how to cut a printed support F is schematically illustrated in figs. 2a, 2b, 2c. In these figures, by way of non-limiting example, it has been assumed that the cutting line X1 of the print S is misaligned with respect to the horizontal direction X by an angle a.

The printed support F is introduced into the automatic cutter 10 as in fig. 2a, i.e. substantially in the vertical direction Y, by its engagement with the feeding devices 23 aligned on the frame 27. In this situation, the frame 27 is directed substantially in a direction T substantially aligned or parallel to the horizontal direction X, which is fixed.

The sensors 15 and 15 'detect that there is such misalignment of an angle a of the cutting line X1 with respect to the horizontal direction X, in fact in this example the sensor 15' detects the passage of the end 71 'before the sensor 15 detects the passage of the end 71 of the demarcation line 36. At this point the frame 27, thanks to the oscillation device 30 controlled by the control unit of the automatic cutter 10, is rotated by the same angle a to compensate for this misalignment.

The horizontal direction X along which the horizontal cutting unit 14 lies is always fixed, therefore, to highlight this aspect, in figures 2a, 2b, 2c, X = 0 has been indicated, while the cutting line XI of the printed support F , thanks to the rotation of the frame 27, it is aligned with this horizontal direction X, see fig. 2b, in which it is indicated that X1 = X, which is always fixed, therefore X = 0.

When the cutting line X1 of the printed support F coincides with the horizontal direction X, the cutting carriage 17 of the horizontal cutting unit 14 is operated to cut the printed support F along this cutting line X1.

Once the cut has been made along the cutting line X1, it is possible to foresee that the frame 27 will be straightened again with respect to the horizontal direction X, see fig. 3 in which the direction T is again aligned with the horizontal direction X which has remained fixed, then the printed support F 'can be translated in the vertical direction Y to carry out the cut along the cutting lines Y1 and Y2, i.e. the cutting lines vertical, by means of the vertical cutting devices 22.

Of course, the frame 27 can be rotated around the V axis on one side or the other with respect to the horizontal direction X, so for example in one direction and at a height equal to, for example, the angle a, see fig. 2a and 4a, or in the other direction and of a height equal to, for example, an angle β, see fig.

5c, to correct a different misalignment of the cutting line X1.

The angle α or β of oscillation of the frame 27 can be variable from about 0 ° to about 5 °.

The vertical cutting devices 22, see for example fig. 7 and fig. 8, may each comprise a first dragging part 46 of the printed support F or F '.

This dragging part 46 comprises a shoe 47 suitably shaped and suitable for engaging in a corresponding guide 48 of the first side 38 of the frame 27.

This dragging part 46 comprises a dragging roller 49 suitably shaped and connected to a motor 50, see also fig. 4, so that it can drag the printed support, for example the printed support F 'in fig. 2c, along the cutting lines Y1 and Y2, cooperating with a contrast roller 51 provided in a cutting part 52 of said vertical cutting device 22.

This motor 50 is configured to rotate a shaft 68, see also fig. 9, to which the drive rollers 49 of the various vertical cutting devices 22 are fixed.

In particular, the side portions 58 of the driving roller 49 are in contact with the side portions 59 of the contrast roller 51 to carry out the driving of the printed support F or F '.

Said dragging roller 49 comprises in a central zone at least one counter-blade 53, suitable for cooperating with at least one blade 54 of the cutting part 52.

In particular, the blade 54 is positioned on the contrast roller 51 and can be lowered or raised with respect to the counter-blade 53 by means of an actuator 55, for example a pneumatic actuator.

This actuator 55 may comprise, for example, a piston 56 operated by compressed air coming from a suitable duct 64 and delivered by suitable feeding means, for example a compressor or the like housed inside one of the lateral sides 11 or 12.

Said piston 56 can be configured to cooperate with a fork 57 supporting the contrast roller 51, so that by supplying compressed air to the actuator 55, the piston 56 is lowered, thus lowering the contrast roller 51 towards the drive roller 49. By doing so, the blade 54 can cooperate with the counter-blade 53 and the side portions 58 and 59 of the driving roller 49 and the contrast roller 51 come into mutual contact to drag the printed support F or F 'cut along relative lines. vertical cutting lines, for example, cutting lines Y1, Y2.

After the delivery of compressed air, it can be assumed that the piston 56 rises thus causing the fork 57 to rise, for example by means of suitable elastic return means, and therefore the separation of the contrast roller 51 from the drive roller 49.

The cutting part 52 comprises a support element 60 of this fork 57 of the contrast roller 51, and this support element 60 is provided with a shoe 61 suitably shaped and suitable for engaging in a corresponding guide 62 of the first side 38 of the frame 27.

The actuation of the actuator 55 associated with the cutting part 52 can be carried out by means of, for example, a tap 63 which in a first position allows compressed air to be sent into the duct 64 and therefore to the actuator 55 and in a second position in which no compressed air is sent.

The various taps 63 that can be associated with the cutting parts 52 and connected to the compressed air supply means can be arranged for example on the crosspiece 20 '.

Furthermore, the cutting part 52 can be provided with a reference element 65 suitable for engaging with an abutment device 66, movable along a groove 67 obtained on said guide 62.

This abutment device 66 may include, for example, a pair of pins 69 adapted to abut against the reference element 65.

This abutment device 66 can provide suitable fastening means in position along the groove 67, which can be activated and deactivated by means of a knob 70.

Basically, once the cutting part 52 has been positioned in the desired position along the guide 62, this abutment device 66 is locked in position along the groove 67 so that the pins 69 abut against the reference element 65 of this part. of cutting 52.

As can be seen for example from fig. 4, if at least one of the end parts of the frame is in the form of a frame, for example the frame 41, the motor 24 for driving the feeding devices 23 and the motor 50 for driving the driving rollers 49 can be housed along the sides of frame 41.

Advantageously, the cutting part 52 and the driving part 46 of the vertical cutting device 22 can be separated, see for example fig. 7, fig. 8 or fig. 9, therefore they can be made independent of each other, allowing great flexibility in the use of these vertical cutting devices 22 and allowing you to manually translate the cutting part 52 with respect to the dragging part 46.

In particular, the cutting part 52 can be translated in one direction or the other and manually along the guide 62 by means of the relative shoe 61.

In fig. 9, in which three vertical cutting devices 22 are illustrated as an example but not limitedly, the vertical cutting device 22 located on the left looking at the figure is active and therefore the cutting part 52 cooperates with the driving part 46, the cutting device vertical section 22 shown centrally is inactive and has the cutting part 52 manually translated with respect to the driving part 46, while the vertical cutting device 22 located on the right looking at the figure is in an inactive position but with the cutting part 52 positioned in correspondence with the drive part 46.

The independence of the cutting part 52 from the dragging part 46 allows for example, if desired, to possibly disable some vertical cutting devices 22 and to keep others active.

In essence, therefore, the vertical cutting device 22 provided with an independent and separable cutting part 52 and driving part 46 gives great flexibility to the present automatic cutter 10.

Advantageously, as it can be seen from the description, the present automatic cutter is provided with one or more feeding devices 23 for the printed support F which are associated with a frame 27 whose position is adjustable by means of oscillation or rotation with respect to at least one side 11 of the automatic cutter, while the horizontal cutting unit 14 remains fixed.

The present automatic cutter 10 will also be provided with a control unit which gives the frame 27 which carries the feeding devices 23 of the printed support F the desired rotation or angle with respect to the horizontal cutting unit 14, which is fixed, to example that rotates said frame 27 by the angles α, β or, of course, any other angle, on the basis of any misalignments of the cutting line X1 detected by the sensors 15, 15 '.

In the attached figures, two or three vertical cutting devices 22 associated with the frame 27 have been shown by way of example, but, of course, it is possible to provide a different number and a different arrangement of these vertical cutting devices 22, according to the different requirements of automatic cutter cut 10.

Substantially therefore, in the present automatic cutter 10, it is the printed support F, F 'which is rotated to correct any misalignment problems of the horizontal cutting line XI, while the horizontal cutting unit 14 provided on the automatic cutter remains fixed.

It is clear that modifications and / or additions of parts can be made to the automatic cutter described so far, without thereby departing from the scope of the present invention.

It is also clear that, although the present invention has been described with reference to some specific examples, a person skilled in the art will certainly be able to realize many other equivalent forms of automatic cutter, having the characteristics expressed in the claims and therefore all falling within the scope protection defined by them.

In the following claims, the references in brackets are for the sole purpose of facilitating reading and should not be considered as limiting factors as regards the scope of protection underlying the specific claims.

Claims (11)

CLAIMS 1. Automatic cutter, comprising: one or more feeding devices (23) of at least one printed support (F) to be cut according to at least one cutting line (XI), said printed support (F) being provided with at least one demarcation line (36) positioned in proximity to said cutting line (X1); at least one horizontal cutting unit (14), adapted to cut the printed support (F) in at least a first horizontal direction (X); and one or more vertical cutting devices (22), adapted to cut said printed support (F) in at least a second vertical direction (Y); and a plurality of sensors (15, 15 ') designed to detect, through said demarcation line (36), if the cutting line (X1) of the printed support (F) is aligned with said horizontal direction (X), said automatic cutter being characterized by the fact that said horizontal cutting unit (14) is fixed and comprises at least one relative crosspiece (16) fixed stably on the lateral sides (11, 12) of the automatic cutter and at least said feeding devices (23) of the molded support (F) are positioned on a frame (27) hinged to a side board (11, 12) so as to define an axis (V) of oscillation of said frame (27) and connected, on the other side board ( 12, 11), to an oscillation device (30) configured to rotate said frame (27) and therefore at least said feeding devices (23) of the printed support (F) around said axis (V) with respect to the horizontal cutting unit (14) fixed, thus obtaining the alignment of the cutting line (X1) of the printed support (F) along the horizontal direction (X). 2. Automatic cutter according to claim 1, characterized in that said frame (27) comprises at least a first side (38) where said vertical cutting devices (22) are aligned. 3. Automatic cutter according to claim 1, characterized in that said frame (27) comprises at least a second side (39) where said feeding devices (23) of the printed support (F) to be cut are aligned. 4. Automatic cutter according to claims 2 and 3, characterized in that said first side (38) supporting said vertical cutting devices (22) is parallel to second said side (39) supporting the feeding devices (23) . 5. Automatic cutter according to claim 1, characterized in that said frame (27) comprises end parts (28, 29) positioned on said side panels (11, 12) and connected to the rest of the frame (27) by windows (42 , 43) obtained in said lateral sides (11, 12). 6. Automatic cutter according to claim 1, characterized in that said oscillation device (30) comprises a motor (31) provided with at least one eccentric pin (35) to which a portion (33) of the frame (27) is connected . 7. Automatic cutter according to claim 1, characterized in that said vertical cutting devices (22) comprise at least a cutting part (52) provided with at least one blade (54) and at least a driving part (46) provided with a counter-blade (53), said cutting part (52) and said driving part (46) being separable and independent from each other. 8. Automatic cutter according to claim 7, characterized in that said cutting part (52) comprises at least one shoe (61) movable along a guide (62) obtained on the frame (27), so that said cutting part ( 52) can be translated into any position along said guide (62). 9 Automatic cutter according to claim 7, characterized in that said vertical cutting devices (22) comprise at least one actuator (55) for approaching or moving away said cutting part (52) to or from said dragging part (46), said cutting part (52) comprising at least one contrast roller (51) provided in a central area of said blade (54) and said driving part (46) comprising at least one driving roller (49) provided in a central area of said counter-blade (53), said contrast roller (51) and said drive roller (49) being provided with lateral portions (58, 59) able to mutually come into contact when said cutting part (52) and said cutting part dragging (46) are approached by means of said actuator (55). 10. Method of cutting a printed support by means of an automatic cutter according to any one of the preceding claims, characterized in that it comprises: at least one feeding step of the printed support (F) to be cut at least according to a cutting line (X1), in the such as the frame (27) carrying one or more feeding devices (23) of the printed support (F) is aligned with a horizontal cutting direction (X), which is fixed; the detection of the alignment of said cutting line (X1) with said horizontal cutting direction (X); the rotation, in one direction or the other, of the frame (27) which supports said one or more feeding devices (23) of the printed support (F) so as to correct any misalignments of the cutting line (XI), thus that said cutting line (X1) is aligned with said horizontal direction (X), which remains fixed; horizontal cutting of said printed support (F) along said cutting line (X1); and the vertical cut of the printed support (F). 11. Method according to claim 10, characterized in that said vertical cut of the printed support (F) takes place after realigning the frame (27) with respect to the horizontal direction (X), which remains fixed.