Component of a cutting device for a labeling machine for containers, in particular bottles

Abstract

A component (1) of a cutting device (10) for a labeling machine (100) for containers (109), the labeling machine (100) being of the roll-fed type, the component (1) comprising a cutting tool (2), in particular a knife, provided with a blade (29) for cutting a roll; a tool-holder body (3) provided with a seat (30) in which the cutting tool (2) is arranged; a support (4) to which the tool-holder body (3) is constrained; wherein the cutting tool (2) is constrained to the tool-holder body (3) by means of first fastening screws (21); wherein the tool-holder body (3) is constrained to said support (4) by means of second fastening screws (31); wherein there are provided first adjusting screws (32) constrained ed to the support (4), adapted to act on the tool-holder body (3) to adjust the position of the tool-holder body (3) with respect to said support (4); cutting device (10) comprising said component (1); and labeling machine (100) comprising said cutting device (10); wherein each first fastening screw (21) crosses the cutting tool (2) and is screwed to the tool-holder body (3); wherein each first fastening screw (21) is arranged so as to be able to bring the cutting tool (2) into abutment both with the bottom (301) of said seat (30) of the tool-holder body (3) and with a side wall (302), in particular orthogonal to the bottom (301), of said seat (30); wherein each first fastening screw (21) is oblique both with respect to said side wall (302) and with respect to the bottom (301) of the seat (30).

Description

[0001] COMPONENT OF A CUTTING DEVICE FOR A LABELING MACHINE FOR CONTAINERS, IN PARTICULAR BOTTLES

[0002] Field of the invention

[0003] The present invention relates to the field of labeling machines for labeling containers, in particular made of plastic, for example bottles.

[0004] The invention relates in particular to a component of a cutting device, which serves to cut a roll to obtain the labels to be applied to the containers.

[0005] Background art

[0006] Plastic containers such as bottles are often provided with a label. To apply the label to the containers, suitable labeling machines are used.

[0007] One type of labeling machines is roll-fed. A roll-fed labeling machine is made so that a roll to be cut is transferred to a cutting device that serves to cut the roll to obtain the labels.

[0008] The cutting device comprises a shell adapted to rotate about a vertical axis, on which the roll portion to be cut is arranged.

[0009] A cutting tool, in particular a knife, provided with a blade for cutting the roll, is arranged so as to be facing the shell.

[0010] Such a cutting tool is fastened to a support, and is also known as a fixed cutting tool, since it remains fixed in position during the cutting of the roll.

[0011] For cutting the roll, it is very important that the distance between the aforesaid cutting tool and the roll portion arranged on the shell be adjusted in a precise manner. In order to bring the cutting tool closer to the shell, screws are provided in contact with the cutting tool, adapted to push the cutting tool directly.

[0012] Disadvantageously, should it be necessary to replace the cutting tool, for example due to wear, the adjustment of the position of the cutting tool must be performed again.

[0013] This aspect is particularly disadvantageous because such adjustment requires time and specialized labor.

[0014] Therefore, the need to overcome the limits of the background art is felt.

[0015] In particular, there is a need to avoid performing a complex adjustment of the position of the cutting tool, in particular with respect to the shell of the cutting device, in particular when the cutting tool is replaced.Summary of the invention

[0016] It is an object of the present invention to provide a component for a cutting device of a labeling machine for containers, which allows to simplify the operation of adjusting the position of a cutting tool.

[0017] In particular, an object of the invention is to avoid or otherwise simplify the position adjustment in the event that the cutting tool is replaced.

[0018] The present invention achieves at least one of such objects, and other objects that will become clear in light of the present description, by means of a component, according to claim 1, of a cutting device for a labeling machine for containers, the labeling machine being of the roll-fed type,

[0019] the component comprising

[0020] a cutting tool, in particular a knife, provided with a blade for cutting a roll;

[0021] a tool-holder body provided with a seat in which the cutting tool is arranged; a support to which the tool-holder body is constrained;

[0022] wherein the cutting tool is constrained to the tool-holder body by means of first fastening screws;

[0023] wherein the tool-holder body is constrained to said support by means of second fastening screws;

[0024] wherein there are provided first adjusting screws constrained to the support, adapted to act on the tool-holder body to adjust the position of the tool-holder body with respect to said support;

[0025] wherein each first fastening screw crosses the cutting tool and is screwed to the tool-holder body;

[0026] wherein each first fastening screw is arranged so as to be able to bring the cutting tool into abutment both with the bottom of said seat of the tool-holder body and with a side wall, in particular orthogonal to the bottom, of said seat;

[0027] wherein each first fastening screw is oblique both with respect to said side wall and with respect to the bottom of the seat.

[0028] The invention also relates to a cutting device, according to claim 15, for cutting a roll to obtain labels for containers.

[0029] The invention also relates to a labeling machine for containers, according to claim

[0030]

[0031] Advantageously, a component according to the present description allows precise, in particular micrometric, positioning of a new cutting tool to replace the cutting tool, without the need to adjust the position of the tool-holder body and without the need for special components to fasten the new cutting tool to the toolholder body.

[0032] Advantageously, the set-up time to be able to use the cutting device with the new cutting tool is greatly reduced.

[0033] Advantageously, the position of the cutting tool may be achieved by moving the tool-holder body. Advantageously, in the event that the cutting tool has to be replaced, a component (and also a cutting device and a labeling machine) according to the invention makes it possible to avoid having to perform a new position adjustment with the first adjusting screws for the new cutting tool. In other words, the adjustment carried out with the first adjusting screws for the preceding cutting tool (replaced) is not lost.

[0034] In the present description, the terms “horizontal” and “vertical” in relation to an axis refer in particular to a condition in which the component is mounted in the labeling machine which, in particular, is in a configuration in which it may apply labels to containers.

[0035] Further features and advantages of the invention will become more apparent in light of the detailed description of exemplary, but non-exclusive embodiments. The dependent claims describe particular embodiments of the invention.

[0036] Brief description of the drawings

[0037] The description of the invention refers to the accompanying drawings, which are provided by way of non-limiting example, in which:

[0038] Fig. 1 shows a perspective view of a component according to the invention;

[0039] Fig. 2 shows a top plan view of the component in Fig. 1 ;

[0040] Fig. 3 shows a section on a horizontal plane of the component in Fig. 1;

[0041] Fig. 4 shows a section on another horizontal plane of the component in Fig. 1; Fig. 5 shows a section on another horizontal plane of the component in Fig. 1; Fig. 6 shows a side view of the component in Fig. 1 ;

[0042] Fig. 7 shows a section on a horizontal plane of a cutting device according to the invention;Fig. 8 shows the layout of a labeling machine according to the invention.

[0043] The same elements or components have the same reference numerals.

[0044] Description of exemplary embodiments of the invention

[0045] With reference to the Figures, exemplary embodiments are described of a component 1 of a cutting device 10 for a labeling machine 100 for containers 109, in particular made of plastic, of a cutting device 10, and of a labeling machine 100 according to the invention. The labeling machine 100 is of the roll-fed type. The containers 109 are, in particular, bottles.

[0046] In all the embodiments, the component 1 comprises

[0047] a cutting tool 2, in particular a knife, provided with a blade 29 for cutting a roll; a tool-holder body 3 provided with a seat 30 in which the cutting tool 2 is arranged; a support 4 (distinct from the tool-holder body 3) to which the tool-holder body 3 is constrained;

[0048] wherein the cutting tool 2 is constrained, in particular fastened, to the tool-holder body 3 by means of first fastening screws 21 (i.e. , a plurality of first fastening screws 21);

[0049] wherein the tool-holder body 3 is constrained to said support 4 by means of second fastening screws 31 (i.e., a plurality of second fastening screws 31);

[0050] wherein there are provided first adjusting screws 32 (i.e., a plurality of first adjusting screws 32) fastened to the support 4 adapted to act on the tool-holder body 3, in particular adapted to move the tool-holder body 3, to adjust the position of the toolholder body 3 (and of the cutting tool 2 fastened thereto) with respect to said support 4;

[0051] wherein preferably each first fastening screw 21 crosses the cutting tool 2 and is screwed to the tool-holder body 3;

[0052] wherein preferably each first fastening screw 21 is arranged so as to be able to bring the cutting tool 2 into abutment both with the bottom 301 of said seat 30 of the toolholder body 3 and with a side wall 302, in particular orthogonal to the bottom 301, of said seat 30;

[0053] wherein, preferably, each first fastening screw 21 is oblique both with respect to said side wall 302 and with respect to the bottom 301 of the seat 30.In particular, the cutting tool 2 is adapted to remain fixed in position when the cutting of the roll is performed with it.

[0054] In particular, the blade 29 of the cutting tool 2 protrudes with respect to the support 4 and with respect to the tool-holder body 3 to be able to cut the roll.

[0055] In the Figures, the first fastening screws 21 are numbered with the same reference numeral (i.e., 21), the second fastening screws 31 are numbered with the same reference numeral (i.e., 31) and the first adjusting screws 32 are numbered with the same reference numeral (i.e., 32).

[0056] The second fastening screws 31 and the first adjusting screws 32, in particular, are outside, in particular completely outside, of the cutting tool 2.

[0057] Advantageously, to replace the cutting tool 2 it is sufficient to unscrew the first fastening screws 21 , in particular only the first fastening screws 21.

[0058] The first fastening screws 21 , in particular, are distinct from the second fastening screws 31. In particular, the axes of rotation R21 (only one of them is illustrated in Fig. 3) of the first fastening screws 21 are non-parallel to the axes of rotation R31 (only one is shown in Fig. 3) of the second fastening screws 31. In particular, preferably the first fastening screws 21 are not used to fasten together the cutting tool 2 and the support 4, and preferably the second fastening screws 31 are not used to fasten together the cutting tool 2, the blade-holder body 3, and the support 4. In particular, the axes of rotation R21 of the first fastening screws 21 are nonparallel to the axes of rotation R32 (only one of which is illustrated in Fig. 3) of the first adjusting screws 32.

[0059] The first adjusting screws 32, in particular, are distinct from the second fastening screws 31.

[0060] In particular, each first adjusting screw 32 (Fig. 3) is adapted to push the tool-holder body 3, in particular substantially parallel to a first axis X (Fig. 1), for adjusting the position of the tool-holder body 3, and of the cutting tool 2 fastened to it, with respect to said support 4. Said first axis X is in particular a substantially horizontal axis. In other words, the first adjusting screws 32 are configured to push the tool-holder body 3 so as to move it away from the support 4.In particular, the first adjusting screws 32 are adapted to move the tool-holder body 3, and the cutting tool 2 fastened to it, so as to make the blade 29 protrude further with respect to the support 4, i.e. , for moving the blade 29 outward.

[0061] With reference to a condition in which the component 1 is mounted in the cutting device 10 (Fig. 7, Fig. 8), the first adjusting screws 32 are configured to push the tool-holder body 3 (and the cutting tool 2 fastened to it), toward the shell 12 on which part of a roll to be cut may be arranged.

[0062] In particular, the first adjusting screws 32 cross said support 4 and are preferably in contact (or in any case are adapted to come into contact) with the tool-holder body 3, in particular with a rear surface (or face) 319 of the tool-holder body 3.

[0063] The first adjusting screws 32, in particular, are arranged so as to form a row along an axis, which in particular is a vertical axis.

[0064] Each first adjusting screw 32 is arranged so that, when it is screwed, it moves along a respective axis, which in particular is a substantially horizontal axis. The axes of rotation of the first adjusting screws 32 are substantially parallel to each other. In particular, a screwing of each first adjusting screw 32 corresponds to a displacement of the blade-holder body 3.

[0065] Preferably, instead, an unscrewing of each first adjusting screw 32 does not correspond to a displacement of the blade-holder body 3.

[0066] The first adjusting screws 32 may optionally be used to adjust the inclination of the tool-holder body 3 and of the cutting tool 2 constrained to it, with respect to a vertical axis. In particular, the tool-holder body 3 may be inclined or elastically deformed by tightening only some (one or more) of the adjusting screws 32, so that a longitudinal part of the blade 29 protrudes more with respect to the remaining longitudinal part of the blade 29.

[0067] The first adjusting screws 32 are preferably set screws. Preferably, for each adjusting screw 32 a respective locknut 321 is provided. Each locknut 321 is screwed onto a respective first adjusting screw 32 and is preferably in contact with an outer surface of the support 4. Each locknut 321 serves, in particular, to lock the respective adjusting screw 32 in position.

[0068] The first fastening screws 21 (Fig. 3), in particular, integrally secure the cutting tool 2 to the tool-holder body 3. In particular, each first fastening screw 21 crossesthe cutting tool 2 and is screwed to the tool-holder body 3, in particular directly to the tool-holder body 3. Preferably, the cutting tool 2 is fastened to the tool-holder body 3 only by means of said first fastening screws 21.

[0069] The first fastening screws 21 , in particular, are arranged so as to form a row along an axis, which in particular is a vertical axis. Each first fastening screw 21 is arranged so that when it is screwed it moves along a respective axis, which in particular is a substantially horizontal axis. The axes of rotation R21 of the first fastening screws 21 are substantially parallel to each other.

[0070] Each first fastening screw 21 , in particular, comprises a shank 212 and preferably a head 211. The shank 212 has an end 213, in particular free. In particular, the end 213 of the shank 212 of each first fastening screw 21 is outside the support 4, in particular (also) when the first fastening screws 21 are completely screwed in. In particular, the component 1 is preferably configured so that even when the first fastening screws 21 are completely screwed in, the first adjusting screws 32 may move the tool-holder body 3 and the cutting tool 2 fastened to it. The first fastening screws 21 , in particular are not screwed into the support 4.

[0071] The first fastening screws 21, in particular, are outside, in particular completely outside of the support 4.

[0072] Preferably, the first fastening screws 21 are fastening screws with a cylindrical head. The second fastening screws 31 (Fig. 3) are preferably screwed to the support 4 and cross the tool-holder body 3. In particular, each hole 310 in the tool-holder body 3, crossed by a respective second fastening screw 31 , has a greater diameter with respect to the shank of the second fastening screw 31 , so that the tool-holder body 3 can be moved with respect to the support 4 when it is pushed by one or more of the first adjusting screws 32.

[0073] The second fastening screws 31 , in particular, are arranged so as to form a row along an axis, which in particular is a vertical axis. Each second fastening screw 31 is arranged so that, when it is screwed, it moves along a respective axis, which in particular is a substantially horizontal axis. The axes of rotation R31 of the second fastening screws 31 are substantially parallel to each other.

[0074] Preferably, the second fastening screws 31 are hexagonal head fastening screws.The second fastening screws 31, in particular, cross a face 318 of the tool-holder body 3, which is transverse, preferably substantially orthogonal, to the aforesaid rear face 319 of the tool-holder body 3. The face 318 and the face 319, in particular, form an edge between them.

[0075] Preferably, in all embodiments, the axis of rotation R32 of the first adjusting screws 32 is parallel or substantially parallel to a first axis X; and the axis of rotation R31 of each second fastening screw 31 is parallel or substantially parallel to a second axis Z (Fig. 5); and the first axis X and the second axis Z are orthogonal to each other. This feature is particularly advantageous. Indeed, thereby, the tightening of the second fastening screws 31 does not cause undesired displacements, in particular not even micrometric ones, of the tool-holder body 3 along the first axis X (or parallel to the first axis X). Indeed, with this arrangement, the tightening force of the second fastening screws 31 has substantially no components along the first axis X. In particular, reference is made to a condition in which the first fastening screws 21, the second fastening screws 31 and the first adjusting screws 32 are at least partially screwed in.

[0076] The axis of rotation R21 of each first fastening screw 21 , in particular, is parallel to an axis that is oblique to both the first axis X and the second axis Z.

[0077] Preferably, the first axis X and the second axis Z are substantially horizontal axes. Axis of rotation R32 substantially parallel to the first axis X, and axis of rotation R31 substantially parallel to the second axis Z means, in particular, a tolerance of ±5°, preferably ±2°.

[0078] Clearly, each screw, in particular each first fastening screw 21, each second fastening screw 31 and each first adjusting screw 32, has a respective axis of rotation.

[0079] Preferably, all the first fastening screws 21 are substantially identical to one another, all the second fastening screws 31 are substantially identical to one another, and all the first adjusting screws 32 are substantially identical to one another.

[0080] Preferably, the number of the first adjusting screws 32 is equal to the number of the second fastening screws 31 and preferably also equal to the number of the first fastening screws 21.Preferably, each first adjusting screw 32 is substantially at the same height (with respect to a vertical axis) as a respective second fastening screw 31 and preferably also as a respective first fastening screw 21.

[0081] Preferably, the axis of rotation of any first adjusting screw 32 is orthogonal to the axis of rotation of a respective second fastening screw 31 , which in particular is at its same height; and preferably the axis of rotation of any first fastening screw 21 is oblique with respect to the axis of rotation of a respective first adjusting screw 32, which in particular is at its same height.

[0082] As already mentioned, each first fastening screw 21 is preferably arranged so as to be able to bring into abutment, in particular so as to keep in abutment, the cutting tool 2 both with the bottom 301 (or bottom wall or bottom surface) of said seat 30 of the tool-holder body 3 and with a side wall 302 (or side surface), in particular orthogonal to the bottom 301 , of said seat 30.

[0083] Advantageously, in the event that the cutting tool 2 is replaced with a new cutting tool 2, the new cutting tool 2 may be positioned substantially in the same position as the cutting tool 2 which has been replaced.

[0084] In particular, by means of the first fastening screws 21 , the rear surface 201 (or rear face) of the cutting tool 2 is held in abutment with the bottom 301 of the seat 30, and a side surface 202 (or side face) of the cutting tool 2 is held in abutment with said side wall 302 of the seat 30. The rear surface 201 is opposite the blade 29; the blade 29, in particular, defines the front end of the cutting tool 2.

[0085] Preferably, the edge between said rear surface 201 and said side surface 202 of the cutting tool 2 is chamfered.

[0086] Preferably, said rear surface 201 and said side surface 202 of the cutting tool are substantially orthogonal to each other.

[0087] In particular, as already mentioned, each first fastening screw 21 is oblique both with respect to said side wall 302 and with respect to the bottom 301 of the seat 30. Preferably, each first fastening screw 21 is inclined so that the distance between the head 211 of each first fastening screw 21 and the bottom 301 of said seat 30 of the tool-holder body 3 is greater than the distance between the shank 212 of each first fastening screw 21 and the bottom 301 of said seat 30.Preferably, the axis of rotation R21 of each first fastening screw 21 is inclined, i.e. , oblique, with respect to the axis of rotation R31 of each second fastening screw 31 and with respect to the axis of rotation R32 of each first adjusting screw 32.

[0088] The seat 30 of the tool-holder body 3 is, in particular, a longitudinal seat that extends mainly along a vertical axis. Substantially, the seat 30 is a recess in the tool-holder body 3.

[0089] The tool-holder body 3, in particular, is formed by a single body.

[0090] The cutting tool 2, in particular, is formed by a single body.

[0091] It is particularly preferable that the component 1 comprises at least one elastic component 34 (Fig. 5) arranged between said support 4 and the tool-holder body 3, and said at least one elastic component 34 applies a force on the tool-holder body 3, in particular parallel to said first axis X.

[0092] In particular, said force is adapted to pull the tool-holder body 3 away from said support 4.

[0093] Advantageously, said at least one elastic component 34 allows undesired plays to be eliminated, in particular between the support 4 and the tool-holder body 3. Preferably, said at least one elastic component 34 is a disc spring. Alternatively, for example, said at least one elastic component 34 may be a spring of other type or an elastic body, for example made of rubber.

[0094] An elastic component 34 may, for example, be provided, in particular a single elastic component 34, for example arranged at about half of the height (in particular considered parallel to a vertical axis) of the support 4.

[0095] Alternatively, more than one elastic component 34 may be provided, for example two elastic components 34 may be provided.

[0096] Preferably, the component 1 comprises at least one screw 33 (Fig. 5) screwed to the tool-holder body 3, so that said screw 33 can bring the tool-holder body 3 closer to said support 4, in particular when it is rotated in a screwing direction. In particular, each screw 33 is screwed into a respective threaded seat 35 of the tool-holder body 3.

[0097] Said at least one screw 33, in particular, is adapted to rotate about a horizontal axis, in particular parallel to said axis X or for example coincident with said axis X.Said at least one screw 33, in particular, is outside, in particular completely outside, of the cutting tool 2.

[0098] Advantageously, by means of the screw 33, the tool-holder body 3 may be moved back with respect to the forward displacement carried out by means of the first adjusting screws 32. Said at least one screw 33 is therefore also an adjusting screw. With reference to a condition in which the component 1 is mounted in the cutting device 10 (Fig. 7, Fig. 8), said at least one screw 33 is adapted to move the toolholder body 3 (and the cutting tool 2 fastened thereto), away from the shell 12 on which part of a roll to be cut may be arranged.

[0099] Preferably, said at least one elastic component 34 (if provided) is crossed by a respective screw 33 (Fig. 5). For example, there is provided an elastic component 34 crossed by a screw 33.

[0100] Preferably, the component 1 comprises second adjusting screws 36 (Fig. 4, Fig.

[0101] 6), distinct from the first adjusting screws 32. The second adjusting screws 36 are screwed into the tool-holder body 3 and are configured to push said cutting tool 2 to adjust the position of the cutting tool 2 with respect to the tool-holder body 3, in particular to pull the cutting tool 2 away from the bottom 301 of the seat 30 of the tool-holder body 3.

[0102] In particular, the second adjusting screws 36 cross the tool-holder body 3 and preferably are in contact with the rear surface 201 of the cutting tool 2.

[0103] In particular, each second adjusting screw 36 is adapted to push the cutting tool 2 substantially parallel to said first axis X.

[0104] In particular, the second adjusting screws 36 are configured to move or elastically deform the cutting tool 2 so as to make the blade 29 protrude further with respect to the tool-holder body 3, i.e. , to move the blade 29 outward.

[0105] With reference to a condition in which the component 1 is mounted in the cutting device 10 (Fig. 7, Fig. 8), the second adjusting screws 36 are configured to push the cutting tool 2 toward the shell 12 on which part of a roll to be cut may be arranged. Advantageously, the second adjusting screws 36 allow an additional or alternative adjustment of the position of the cutting tool 2 with respect to the adjustment that may be performed by means of the first adjusting screws 32.The second adjusting screws 36, in particular, are arranged so as to form a row along an axis, which in particular is a vertical axis.

[0106] Each second adjusting screw 36 is arranged so that, when it is screwed, it moves along a respective axis, which in particular is a substantially horizontal axis, in particular parallel to the axis X.

[0107] In particular, a screwing of each second adjusting screw 36 corresponds to a displacement of the cutting tool 2. The axes of rotation of the second adjusting screws 36 are substantially parallel to each other.

[0108] Preferably, each second adjusting screw 36 is a set screw.

[0109] Each second adjusting screw 36 is preferably accessible by means of a respective hole in the support 4.

[0110] In the Figures, the second adjusting screws 36 are indicated with the same reference numeral.

[0111] Preferably, for each second adjusting screw 36, a respective screw 37 is provided, adapted to lock in position the respective second adjusting screw 36. Preferably, each screw 37 crosses the tool-holder body 3 and abuts the respective second adjusting screw 36 to lock it in position.

[0112] In the Figures, the screws 37 are indicated with the same reference numeral. The aforesaid second adjusting screws 36 (in particular as just described) are advantageous also, possibly, independently of the following features: each first fastening screw crosses the cutting tool and is screwed to the tool-holder body; each first fastening screw is arranged so as to be able to bring the cutting tool into abutment both with the bottom of said seat of the tool-holder body and with a side wall, in particular orthogonal to the bottom, of said seat; each first fastening screw is oblique both with respect to said side wall and with respect to the bottom of the seat.

[0113] Preferably, said support 4 is provided with adjustment means (Fig. 5) adapted to rotate the tool-holder body 3, and the tool 2 fastened to it, about a vertical axis Y (Fig. 1 ), preferably orthogonal to the aforesaid horizontal axes X and Z. In particular, said adjustment means are adapted to rotate the support 4 and thus also the toolholder body 3 and the cutting tool 2 fastened to it. Said adjustment means preferably comprise a knob 43, preferably graduated. This feature is particularly advantageous.In particular, once a worn cutting tool is replaced with a new cutting tool (in particular by acting only on the first fastening screws 21), by means of the aforesaid adjustment means it is possible to adjust the position of the new cutting tool without the need to also act on the first adjusting screws 32 (and / or on said at least one screw 33, if provided). The adjustment by said adjustment means is particularly easy and may be performed quickly. By means of said adjustment means, in particular, the position of the cutting tool 2 may be adjusted with respect to the shell 12 on which part of a roll to be cut may be arranged.

[0114] Advantageously, in all embodiments, preferably, a worn cutting tool 2 may be replaced by unscrewing the first fastening screws 21 (in particular only the first fastening screws 21), without having to also unscrew the first adjusting screws 32 (and not even the at least one screw 33, if provided). Adjustment by said adjustment means further allows rapidly, easily and precisely to adjust the position of the new cutting tool.

[0115] The support 4, in particular, comprises a first part 41 and a second part 42 between which a gap 40 is present; the tool-holder body 3 is constrained to said first part 41 by means of said second fastening screws 31; the first part 41 and the second part 42 are constrained to each other so that the first part 41 can rotate with respect to the second part 42 about said vertical axis Y;

[0116] and said adjustment means comprise a movable part 44 adapted to be moved by said knob 43. In particular, when the knob 43 is rotated about an axis, in particular horizontal, the movable part 44 moves parallel to said axis of rotation of the knob 43.

[0117] In particular, said movable part 44 is adapted to push against said second part 42 to rotate the first part 41 with respect to the second part 42 about said vertical axis Y.

[0118] Preferably, the first part 41 and the second part 42 are two separate bodies from each other. Preferably, between the first part 41 and the second part 42, there is a cylindrical body 45, or pin, which preferably defines said vertical axis Y. In particular, the second part 42 may rotate on the cylindrical body 45. Preferably, screws 46 are provided (Fig. 4) that constrain the first part 41 and the second part 42 to each other. For each screw 46, a respective elastic component 47 is preferably provided, forexample a respective disc spring 47. Preferably, each elastic component 47 surrounds a respective screw 46. The elastic components 47 are configured so that there is no undesired play between the first part 41 and the second part 42. In particular, the elastic components 47 are dimensioned, more in particular having a preload, so that there is no undesired play between the first part 41 and the second part 42.

[0119] Alternatively, instead of being bodies separate from each other, the first part 41 and the second part 42 may be parts of the same body. In this case, for example, the gap between the two parts is substantially C- or U-shaped.

[0120] With particular reference to Fig. 7 and 8, the invention also relates to a cutting device 10 for cutting a roll to obtain labels for containers 109, the cutting device 10 comprising at least one component 1 , preferably a component 1.

[0121] In particular, the cutting device 10 comprises a rotatable shaft 11 to which a shell 12 is constrained, on which part of a roll to be cut may be arranged.

[0122] The rotatable shaft 11 is adapted to rotate about a vertical axis. The shell 12, in particular, is a body having a substantially cylindrical side surface.

[0123] Preferably, part of the coil to be cut may be held on the shell 12 by means of suction. The cutting tool 2, also referred to as fixed cutting tool 2 (because it remains fixed in position when the cutting of the roll is performed), is adapted to cut the roll arranged on said shell 12, in particular on the side surface of the shell 12. In particular, the cutting tool 2 faces the side surface of the shell 12.

[0124] Preferably, one or more further cutting tools 14a, 14b (for example two cutting tools 14a, 14b) are constrained to the rotatable shaft 11 , in particular so as to be able to rotate integrally with it, by means of a respective support 13a, 13b.

[0125] The one or more cutting tools 14a, 14b are also referred to as rotating cutting tool(s) 14a, 14b.

[0126] With particular reference to Fig. 8, the invention also relates to labeling machine 100 for containers 109, in particular bottles, in particular made of plastic. The labeling machine 100 is of the roll-fed type. The labeling machine 100 comprises a component 1. In particular, the labeling machine 100 comprises a cutting device 10.The labeling machine 100 in particular comprises a feeding device 101, or feedroller, adapted to feed the cutting device 10, in particular the shell 12, with the roll to be cut.

[0127] The labeling machine 100, in particular, comprises at least one roll support 102a, 102b, for example two roll supports 102a, 102b. In the case where two or more roll supports 102a, 102b are provided, a device 103 for the automatic splicing of the roll is preferably provided.

[0128] Upstream of the cutting device 10, a tensioning device 104 is preferably provided, adapted to keep the roll under tension.

[0129] The labeling machine 100 comprises, in particular, a label transfer roller 105 to apply the labels (obtained from the roll cut by the cutting device 10) to the containers 109, which are supported and moved by a wheel 107.

[0130] The labeling machine 100 also comprises a roller 106 adapted to apply glue onto the labels, before they are applied to the containers 109.

[0131] In particular, the cutting device 10 transfers the labels to the label transfer roller 105. Glue is applied to the labels that are on the label transfer roller 105 by means of the roller 106, and then the labels are transferred to the containers 109 that are supported by the wheel 107.

Claims

CLAIMS1. A component (1) of a cutting device (10) for a labeling machine (100) for containers (109), the labeling machine (100) being of the roll-fed type,the component (1) comprisinga cutting tool (2), in particular a knife, provided with a blade (29) for cutting a roll; a tool-holder body (3) provided with a seat (30) in which the cutting tool (2) is arranged;a support (4) to which the tool-holder body (3) is constrained;wherein the cutting tool (2) is constrained to the tool-holder body (3) by means of first fastening screws (21);wherein the tool-holder body (3) is constrained to said support (4) by means of second fastening screws (31);wherein there are provided first adjusting screws (32) constrained to the support (4), adapted to act on the tool-holder body (3) to adjust the position of the tool-holder body (3) with respect to said support (4);wherein each first fastening screw (21) crosses the cutting tool (2) and is screwed to the tool-holder body (3);wherein each first fastening screw (21) is arranged so as to be able to bring the cutting tool (2) into abutment both with the bottom (301 ) of said seat (30) of the toolholder body (3) and with a side wall (302), in particular orthogonal to the bottom (301 ), of said seat (30);wherein each first fastening screw (21 ) is oblique both with respect to said side wall (302) and with respect to the bottom (301 ) of the seat (30).

2. A component (1) according to claim 1, wherein each first adjusting screw (32) is adapted to push the tool-holder body (3), in particular substantially parallel to a first axis (X), to adjust the position of the tool-holder body (3) with respect to said support (4); in particular wherein said first adjusting screws (32) cross said support (4).

3. A component (1 ) according to claim 1 or 2, wherein the first fastening screws (21 ) are distinct from the second fastening screws (31 ).

4. A component (1) according to any one of the preceding claims, wherein the first adjusting screws (32) are distinct from the second fastening screws (31).

5. A component (1) according to any one of the preceding claims, wherein the first adjusting screws (32) cross said support (4) and are in contact with a rear face (319) of the tool-holder body (3); and wherein the second fastening screws (31) cross a face (318) of the tool-holder body (3), which is transverse, preferably substantially orthogonal, to said rear face (319) of the tool-holder body (3).

6. A component (1) according to any one of the preceding claims, wherein the axis of rotation (R32) of each first adjusting screw (32) is substantially parallel to a first axis (X), and the axis of rotation (R31) of each second fastening screw (31) is substantially parallel to a second axis (Z); and wherein the first axis (X) and the second axis (Z) are orthogonal to each other; preferably wherein the first axis (X) and the second axis (Z) are substantially horizontal axes; in particular wherein the axis of rotation (R21 ) of each first fastening screw (21 ) is substantially parallel to an axis that is oblique to both the first axis (X) and the second axis (Z).

7. A component (1) according to any one of the preceding claims, wherein the second fastening screws (31 ) cross the tool-holder body (3) and are screwed to the support (4).

8. A component (1) according to any one of the preceding claims, wherein the end (213) of the shank (212) of each first fastening screw (21 ) is external to the support (4).

9. A component according to any one of the preceding claims, wherein the axis of rotation (R32) of any first adjusting screw (32) is substantially orthogonal to the axis of rotation (R31 ) of a respective second fastening screw (31 ).

10. A component (1) according to any one of the preceding claims, wherein there is provided at least one elastic component (34) arranged between said support (4) and the tool-holder body (3), wherein said at least one elastic component (34) exerts a force on the tool-holder body (3), in particular parallel to said first axis (X); in particular wherein said force is adapted to pull the tool-holder body (3) away from said support (4); preferably wherein said at least one elastic component (34) is a disc spring.

11. A component (1) according to any one of the preceding claims, comprising at least one screw (33) screwed to the tool-holder body (3), so that said screw (33) can cause the tool-holder body (3) to move closer to said support (4); preferably whereinsaid at least one elastic component (34) is crossed by a respective screw (33) screwed to the tool-holder body (3), so that said screw (33) can cause the toolholder body (3) to move closer to said support (4).

12. A component (1) according to any one of the preceding claims, wherein there are provided second adjusting screws (36) screwed to the tool-holder body (3) adapted to push said cutting tool (2) to adjust the position of the cutting tool (2) with respect to the tool-holder body (3), in particular to pull the cutting tool (2) away from the bottom (301) of the seat (30) of the tool-holder body (3); in particular wherein said second adjusting screws (36) cross the tool-holder body (3).

13. A component (1) according to any one of the preceding claims, wherein said support (4) is provided with adjustment means adapted to rotate the tool-holder body (3) and the tool (2) about a vertical axis (Y); preferably wherein said adjustment means comprise a knob (43), preferably graduated.

14. A component according to claim 13, comprising a first part (41) and a second part (42) between which there is a gap (40); wherein the tool-holder body (3) is constrained to said first part (41 ) by said second fastening screws (31 ); wherein the first part (41 ) and the second part (42) are constrained to each other so that the first part (41 ) can rotate with respect to the second part (42) about said vertical axis (Y); in particular wherein said adjustment means comprise a movable part (44) adapted to be displaced by said knob (43).

15. A cutting device (10) for cutting a roll to obtain labels for containers (109), the cutting device (10) comprising at least one component (1) according to any one of the preceding claims; in particular wherein the cutting device (10) comprises a rotatable shaft (11) to which a shell (12) is constrained on which part of a roll to be cut can be arranged; wherein the cutting tool (2) is adapted to cut the roll arranged on said shell (12).

16. A cutting device (10) according to claim 15, wherein said cutting tool (2) is adapted to remain substantially fixed in position during the cutting of the roll.

17. A labeling machine (100) for containers (109) of the roll-fed type, comprising a cutting device (10) according to claim 14 or 15; in particular wherein the labeling machine (100) comprises a feeding device (101), or feed-roller, adapted to feed the cutting device (10) with the roll to be cut.

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