Apparatus for making a semi-finished box

Abstract

An apparatus (10) for making a semi-finished box from a blank comprises a supply device (13) configured to supply at least one tape-like item (101); an applicator unit (18) configured to apply a piece (102) of the at least one tape-like item (101) onto a blank (100); a preparatory device (15) configured to receive the at least one tape-like item (101) from the supply device (13) and to make at least one piece (102) of tape-like item (101) available to the applicator unit (18); a first movement device (11) configured to continuously move the blank (100) along a machining direction (X); a second movement device (19) configured to shift the applicator unit (18) on the blank (100) while the first movement device (11) continuously moves the blank (100) along the machining direction (X); a third movement device (22) configured to move at least part of the preparatory device (15) with respect to the supply device (13) while the preparatory device (15) makes the at least one piece (102) of tape-like item (101).

Description

[0001] “Apparatus for making a semi-finished box”

[0002] DESCRIPTION

[0003] The present invention refers to an apparatus for making a semi-finished box.

[0004] The present invention finds a preferred application in the field of making boxes in paper material with automatic box production machines.

[0005] In this technical sector, produced boxes in paper material are made by providing flat sheets of paper material on which a plurality of machinings are carried out that make semi-finished boxes which, subject to further machinings, make boxes in paper material.

[0006] In most cases, boxes made of paper material are made by automatic machines in which a plurality of operating stations follow one another to successively carry out machinings that, starting from preferably continuous sheets of paper material, first make flat blanks in paper material, carry out operations on the blanks to make semi-finished boxes and finally define boxes in paper material, with possibly the items they must contain already inserted in the boxes.

[0007] The Applicant, always striving to improve the performance and efficiency of the production process of boxes in paper material, noted that the operations carried out on the flat sheets in paper material constitute a very important factor in determining the production capacity of the production process.

[0008] The Applicant has in fact verified that high production capacities associated with certain operations carried out in the production process, such as the definition and formation of flat blanks, can be thwarted in the event that other subsequent operations, such as for example operations for associating pieces of tape-like items such as tear-off tapes for opening the box, tapes for closing the box, or other tapes, require a slowdown in production capacity.

[0009] This slowdown is even more critical when the production process involves a continuous movement of the blanks and of the sheets in paper material used to make the blanks.

[0010] In fact, the Applicant noted that as the movement velocity of the blanks increases, it is increasingly difficult to perform subsequent operations of associating pieces of tape-like items with the blanks. This complexity increases further when, for example, the pieces of tape-like items must be associated with the blanks along a direction transverse to the movement direction of the blanks, which requirement typically requires stopping the movement of the blanks in order to guarantee the precision necessary for the application of the pieces of tape-like items.

[0011] In order to increase the production capacity of the production process of boxes in paper material, the Applicant noted that the velocity of application of the pieces of tape-like items on the blanks should be increased.

[0012] The Applicant perceived that by setting in motion, in addition to the blanks, also a unit in charge of applying the piece of tape-like items, it would be possible to carry out the required machinings without stopping the blanks or in any case limiting their slowdown.

[0013] The Applicant also perceived that since the tape-like items are made available in the form of continuous reels, by setting in motion the unit in charge of applying the pieces of tape-like items, a preparatory device should be provided that takes care of making pieces of tape-like items available to the unit in charge of applying them.

[0014] Finally, the Applicant has found that by providing a first movement device configured to shift the blanks with a continuous movement, a second movement device configured to shift the unit in charge of application over a blank while the first movement device moves the blanks and a third movement device configured to move at least part of the preparatory device with respect to the reels of tapelike items while the preparatory device makes pieces of tape-like items, it is possible to supply the unit in charge of application with pieces of tape-like items and move the unit in charge of application with also the pieces of tape-like items transported by it in such a way that the unit in charge of application can shift on the blanks while the blanks shift with a continuous movement and therefore apply the pieces of tape-like items without interrupting the continuous movement of the blanks.

[0015] Thanks to these features, the operations of applying pieces of tape-like items on the blank can be carried out during the continuous movement of the blanks, without this resulting in a limitation of the continuous movement of the blanks even if the pieces of tape-like items are applied transversely to the movement direction of the blanks, obtaining an increased production capacity of the production process of boxes in paper material.

[0016] The present invention therefore concerns an apparatus for making a semifinished box.

[0017] Preferably, the apparatus comprises a supply device configured to supply at least one tape-like item.

[0018] Preferably, the apparatus comprises an applicator unit configured to apply a piece of said at least one tape-like item onto a blank.

[0019] Preferably, the apparatus comprises a preparatory device configured to receive said at least one tape-like item from the supply device and to make at least one piece of tape-like item available to the applicator unit.

[0020] Preferably, the apparatus comprises a first movement device configured to continuously move the blank along a machining direction.

[0021] Preferably, the apparatus comprises a second movement device configured to shift the applicator unit on the blank while the first movement device continuously moves the blank along the machining direction.

[0022] Preferably, the apparatus comprises a third movement device configured to move at least part of the preparatory device with respect to the supply device while the preparatory device makes said at least one piece of tape-like item.

[0023] Thanks to these features, the apparatus for making a semi-finished box can apply at least one piece of tape-like item while the blank is moved continuously through the first movement device, without the need to slow it down or stop it.

[0024] The applicator unit can in fact move while carrying out the application of the piece of tape-like item on the blank, for example by chasing the blank for a stretch of its path along the machining direction.

[0025] In this way it is possible to operate at higher velocities than the known solutions by carrying out the application of the piece of tape-like item at a velocity similar to or equal to that with which the semi-finished blank is moved.

[0026] The expression "tape-like item" means any product that is in the form of an elongated tape or strip, i.e. in which the longitudinal extension is significantly greater than its transverse extension. The tape-like item may be formed from a single tape or strip of material, or from several tapes superimposed together and joined together. The tape-like item also has features such as to allow it to bend during its advancement along a relative transport line. The tape-like item can be made available in the form of a reel. The material of the tape-like item is preferably different from the material of the blank made of paper material. By way of example, the tape-like item can be made of plastic or paper material. Examples of tape-like items may be adhesive strips.

[0027] By the expression "continuous" referred to an expression of motion or movement, is meant a movement that occurs without solution of continuity, that is, without there being a stop or interruption in the movement. In particular, with reference to the movement of a blank, it is meant that the blank is never stopped during its movement.

[0028] By the expression "paper material" is meant a material based on paper or paper pulp in the form of individual sheets or panels or sheets or panels that are superimposed on one another or interspersed with one or more corrugated sheets in which the weight to surface ratio (grammage) is comprised between about 80 grams per square meter and about 1000 grams per square meter.

[0029] By the expression "integral" referred to the movement of two or more elements, is meant that these elements carry out the same movement along one or more directions at simultaneous times. However, this does not exclude, unless expressly stated otherwise, that one of these elements may perform a further movement with respect to one of the other elements while all the elements simultaneously perform the same movement. In other words, a first element and a second element can move integrally by performing a common movement in one or more directions while the first element is moving further along a further direction (or is rotating) with respect to the second element. Two elements that are integral in movement are therefore not necessarily joined or bound to one another.

[0030] By the expression "static condition" referred to a device, is meant that said device does not perform translations with respect to an absolute reference system, i.e. with respect to a reference system integral with the building in which the apparatus subject-matter of the present invention is mounted. Thus, when a device is in a static condition, that device occupies a same physical space within the building. However, a static condition does not exclude that a device can rotate around its own rotation axis. By way of example, a reel of tape-like item having a winding axis around which the tape-like item is wound, when in a static condition, may rotate around that winding axis to unwind the tape-like item. However, this winding axis cannot translate.

[0031] The present invention may have at least one of the preferred features described below. These features can therefore be present individually or in combination with each other, unless expressly stated otherwise, in the apparatus for making a semi-finished box of the present invention.

[0032] Preferably, said applicator unit comprises an applicator device, configured to position said at least one piece of tape-like item in contact with the blank, and a support structure for said applicator device.

[0033] In this way, the applicator device can apply the piece of tape-like item on the blank, while the latter continuously moves, supported by the support structure.

[0034] Preferably, the support structure is integral in movement with the applicator device.

[0035] In this way, when the support structure moves, the applicator device is preferably dragged in motion by the support structure to move with it.

[0036] Preferably, said third movement device is configured to move an accompanying element of the preparatory device, configured to manipulate said at least one tape-like item, while the first movement device continuously moves the blank along the machining direction.

[0037] In this way, the tape-like item can be manipulated by the accompanying element in such a way that a piece of tape-like item can be made from the tape-like item while the blank continuously moves along the machining direction.

[0038] Preferably, the movement device is configured to shift the applicator unit by translating it at least along a direction parallel to the machining direction.

[0039] Preferably, said second movement device is configured to move said support structure of the applicator unit between a static condition in which the support structure is found while the third movement device moves said accompanying element, and a continuous movement condition in which the support structure is found while the applicator device positions said at least one piece of tape-like item in contact with the blank. In this way, the support structure carries the applicator device with continuous motion while the applicator device applies the piece of tape-like item on the blank (which is also moving with continuous motion).

[0040] Furthermore, since the third movement device moves the accompanying element while the support structure is in the static condition, it is possible to arrange the supply device of the at least one tape-like item in the static condition. In fact, the accompanying element acts as an interface between the supply device and the applicator device (integral in movement to the support structure). By configuring the third movement device in such a way that it moves the accompanying element when the support structure is in the static condition, the accompanying element can therefore easily operate between two devices (in particular the supply device and the support structure) both in the static condition.

[0041] Therefore, preferably, the supply device is permanently placed in a static condition.

[0042] Preferably, said third movement device is configured to move said accompanying element of the preparatory device with respect to said support structure of the applicator unit while the first movement device continuously moves the blank along the machining direction.

[0043] In this way, even when the accompanying element operates between the supply device and the support structure, the blank continues to move continuously along the machining direction.

[0044] Preferably, said third movement device is configured to move said accompanying element of the preparatory device perpendicularly to said machining direction while the first movement device continuously moves the blank along the machining direction.

[0045] The Applicant has found that in this way, when the piece of tape-like item is applied to the blank in such a way that it is positioned transversely, for example perpendicularly, to the machining direction along which the blank continuously moves, it can be avoided having to reorient the piece of tape-like item after its realization in order to arrange it aligned with the orientation with which it will be applied to the blank. In fact, by configuring the third movement device to move said accompanying element perpendicularly to the machining direction along which the blank continuously moves, the piece of tape-like item is already substantially aligned with the orientation with which it will be applied to the blank. Preferably, said second movement device is configured to move said support structure and said applicator device and to position the applicator device above the blank while the first movement device continuously moves the blank along said machining direction.

[0046] In this way, both the applicator device and the support structure can be positioned above the blank to apply the piece of tape-like item onto the blank while the latter continuously moves.

[0047] Preferably, said second movement device is configured to move said support structure and said applicator device parallel to said machining direction while the first movement device continuously moves the blank along said machining direction.

[0048] By moving the support structure and the applicator device parallel to the machining direction, it is possible to superimpose the motion of the support structure and of the applicator device in such a way that, starting from the stationary condition of the support structure, the support structure and the applicator device can reach the zone of the blank (which is moving continuously) on which the tape-like piece of item must be applied.

[0049] Preferably, said second movement device is configured to move the applicator device so that the applicator device has zero relative velocity with respect to the blank along said machining direction and while the applicator device positions said at least one piece of tape-like item in contact with the blank.

[0050] In this way, when the applicator device (and the support structure) reaches the zone of the blank on which the tape-like item is to be applied, the applicator device can apply the piece of tape-like item onto the blank transversely to the machining direction. In fact, since the relative velocity along the machining direction between the applicator device and the blank is zero, the applicator device remains positioned on a single band or transverse line of the blank being able to apply the tape-like piece of item on said band or transverse line of the blank.

[0051] Preferably, said preparatory device comprises a knife configured to make said piece of tape-like item by cutting said tape-like item coming from said supply device while the first movement device continuously moves the blank along the machining direction.

[0052] The piece of tape-like item is preferably cut by the knife when the support structure is in the static condition. As mentioned above, in this condition (in which the blank continuously moves), the accompanying element operates between the supply device and the support structure making the piece of tape-like item available to the applicator device integral in movement with the support structure.

[0053] The knife can be placed integral in motion, for example, with the support structure, such that the knife is in a stationary condition during the cutting of the tape-like item.

[0054] Preferably, said knife is configured to cut said tape-like item along a direction parallel to the machining direction.

[0055] In accordance with a first possible embodiment, said accompanying element may be a first gripper configured to grasp a free flap of the tape-like item and to be shifted by said third movement device while grasping said free flap.

[0056] In this case, the accompanying element can be slidably mounted on the support structure of the applicator unit, so as to be able to translate along the support structure in a direction transverse to the machining direction despite being integral in movement with the support structure along the machining direction.

[0057] In this way, the third movement device (configured to move the accompanying element with respect to the support structure) moves the first gripper, preferably perpendicularly to the machining direction, while it is grasping the free flap of the tape-like item which gripper then unwinds (or unrolls) the tape-like item from the supply device while the support structure is in the static condition.

[0058] In accordance with this embodiment, said accompanying element may further comprise a second gripper configured to grasp a portion of the tape-like item which is distal from said free flap.

[0059] Preferably, said second gripper is configured to grasp said portion of the tapelike item while said knife cuts said tape-like item or immediately before said knife cuts said tape-like item.

[0060] The second gripper can also be mounted on the support structure integral in movement with the support structure along the machining direction.

[0061] In this way, when the knife has cut the piece of tape-like item, the piece of tapelike item is retained by the first gripper and by the second gripper. When the second movement device shifts the applicator unit on the blank while the first movement device continuously moves the blank along the machining direction, the first gripper and the second gripper, and with them the piece of tape-like item, move integrally with the support structure making the piece of tape-like item available to the applicator device.

[0062] In accordance with this embodiment, the applicator device may comprise a first applicator roller and a second applicator roller preferably movable reciprocally away from each other along a direction perpendicular to the machining direction.

[0063] The first applicator roller and the second applicator roller are preferably configured to apply a pressure on the piece of tape-like item directed towards the blank, in such a way as to make the piece of tape-like item adhere to the blank and complete the application of the piece of tape-like item on the blank.

[0064] In this way, the first and second roller apply a pressure on at least part of the piece of tape-like item making it properly adhere to the blank.

[0065] In this regard, preferably the third movement device is further configured to move said first applicator roller and said second applicator roller reciprocally away from each other along a direction perpendicular to said machining direction.

[0066] Preferably, the third movement device moves said first applicator roller and said second applicator roller reciprocally away from each other when the second movement device has positioned the support structure above the blank and when the relative velocity between the support structure and the blank is zero.

[0067] Preferably, said first applicator roller is mounted on said first gripper and said second applicator roller is mounted on said second gripper.

[0068] In this way, the first applicator roller and the second applicator roller can act substantially at the first and second gripper. This allows, for example, to ensure that the control over the position of the piece of tape-like item is not lost.

[0069] Furthermore, in this way, the third movement device can move both the first gripper (and possibly the second gripper) and the first applicator roller and the second applicator roller.

[0070] In this embodiment, the second movement device may comprise a first movement actuator configured to move the support structure along the machining direction and a second movement actuator configured to lower the support structure onto the blank. The third movement device may comprise a first movement actuator configured to move both the first gripper (and possibly the second gripper) and the first applicator roller and the second applicator roller.

[0071] Preferably, in order to allow the first applicator roller and the second applicator roller to exert pressure on at least part of the piece of tape-like item making it properly adhere to the blank, the first gripper and the second gripper are rotatable so as to face the first applicator roller and the second applicator roller to the blank.

[0072] In this regard, the third movement device is preferably further configured to rotate said first gripper and said second gripper so as to face said first applicator roller and said second applicator roller to said blank.

[0073] Preferably, the third movement device is configured to rotate said first gripper and said second gripper when the second movement device has positioned the support structure above the blank and when the relative velocity between the support structure and the blank is zero.

[0074] In accordance with a second embodiment, preferably said applicator device comprises a suction wall and said support structure comprises a support roller.

[0075] Preferably, said suction wall is mounted or obtained on an outer surface of said support roller.

[0076] Preferably, said second movement device is configured to set in rotation said support roller so as to face said suction wall to said blank.

[0077] In this embodiment, the second movement device is configured to rotate the support roller and with it the suction wall in such a way as to place the suction wall substantially in contact with the blank while the latter continuously moves along the machining direction. The second movement device is configured to rotate the support roller with a rotation velocity such that, when the suction wall is substantially in contact with the blank, the tangential velocity of the suction wall is substantially equal to the advancement velocity of the blank along the machining direction.

[0078] In this way, the support roller allows the suction wall to apply the piece of tapelike item onto the blank.

[0079] Preferably, the rotation axis of the support roller is perpendicular to the machining direction. In this way, the suction wall applies the piece of tape-like item on the blank along a direction transverse to the machining direction.

[0080] In this embodiment, said accompanying element accompanies the piece of tapelike item on the suction wall when the support roller is in the static condition.

[0081] Preferably, the suction wall suction retains the piece of tape-like item while the accompanying roller rotates.

[0082] Preferably, said accompanying element is an accompanying roller configured to accompany said tape-like item and to be shifted by said third movement device while it accompanies said tape-like item.

[0083] Preferably, in this embodiment the third movement device moves the accompanying roller along the suction wall while the support roller is in the static condition.

[0084] Preferably, the accompanying roller is configured to slide on the suction wall, so as to be able to translate with respect to the support roller in a direction transverse to the machining direction.

[0085] In this way, the third movement device moves the accompanying roller, preferably perpendicularly to the machining direction, while it is accompanying the tape-like item which tape-like item unwinds (or unrolls) from the supply device while the support roller is in the static condition.

[0086] In this embodiment, the third movement device preferably comprises a carriage on which the accompanying roller is mounted. The carriage moves along a direction perpendicular to the machining direction and parallel to the rotation axis of the support roller while the support roller is in the static condition.

[0087] In this embodiment, preferably the third movement device moves said knife integral with said accompanying roller. When the accompanying roller has accompanied the tape-like item on the suction surface, said knife cuts said tapelike item defining a piece of tape-like item deposited on the suction wall.

[0088] Preferably, said knife is mounted on said carriage.

[0089] In all embodiments, the first movement device is preferably a conveyor on which the blank is laid. The conveyor moves with continuous motion the blank along the machining direction. Preferably, the applicator unit is positioned above the blank. In other words, the blank is interposed between the applicator unit and the conveyor.

[0090] Further features and advantages of the present invention will become clearer from the following detailed description of a preferred embodiment thereof, with reference to the appended drawings and provided by way of indicative and nonlimiting example, in which: figure 1 is a schematic perspective view of an apparatus for making a semifinished box from a blank in a first embodiment and in accordance with the present invention; figures 2 to 5 are schematic front views of the apparatus of figure 1 in different operating conditions and with some parts omitted to better highlight others; figure 6 is a schematic front view of some details of the apparatus of figure 1 ; figure 7 is a schematic perspective view of an apparatus for making a semifinished box from a blank in a second embodiment and in accordance with the present invention; and figures 8 to 10 are schematic front views of the apparatus of figure 7 in different operating conditions and with some parts omitted to better highlight others.

[0091] In the accompanying figures, an apparatus for making a semi-finished box from a blank for erecting a vertex of a box in accordance with the present invention is collectively referred to as number 10.

[0092] The apparatus 10 comprises a first movement device 11 which moves with continuous motion a blank 100 along a machining direction X and on a machining plane P. The first movement device 11 may be a conveyor belt 12, as schematically illustrated in figures 1 and 7. Any other type of conveyor capable of advancing with continuous motion the blank 100 can be used instead of the conveyor belt 12 depending on the specific needs.

[0093] The apparatus 10 comprises a supply device 13 having the function of making available at least one tape-like item 101 . The tape-like item 101 can for example be a so-called "tear tape", i.e. a tape that serves to easily open a box, or a so- called "resealable tape", i.e. a tape that allows a box to be reclosed after it has been opened for the first time, or a so-called "seal tape", i.e. a tape that allows a first closing of the box. Hereinafter, reference will be made to a single tape-like item 101. However, as will be apparent hereinafter, a plurality of tape-like items 101 made available simultaneously by the supply device 13 may be provided. The apparatus 10 is therefore able to apply a single type of tape-like item 101 on a blank 100 and also to simultaneously apply a plurality of tape-like items 101 on a blank 100 to make a semi-finished box.

[0094] The supply device 13 comprises a reel 14 (illustrated only in relation to the second embodiment) on which the tape-like item 101 is wound. In the case of a plurality of tape-like items 101 , it can be provided for a plurality of reels (one for each tapelike item 101 ) or a single reel on which the tape-like items 101 are arranged wound parallel to each other.

[0095] The tape-like item 101 is made available by the supply device 13 along a direction substantially perpendicular to the machining direction X and substantially parallel to the machining plane P.

[0096] The apparatus 10 comprises a preparatory device 15 which receives the tapelike item 101 from the supply device 13 and makes a piece 102 of tape-like item 101. This piece 102 of tape-like item 101 is intended to be applied on the blank

[0097] 100 along a direction transverse, and preferably perpendicular, to the machining direction X and substantially parallel to the machining plane P. The preparatory device 15 comprises an accompanying element 16 which acts on the tape-like item 101 to prepare it to be cut in order to make the piece 102 of tape-like item 101. In this regard, the preparatory device 15 comprises a knife 17 that cuts the piece 102 from the continuous reel of tape-like item 101.

[0098] The apparatus 10 comprises an applicator unit 18 which applies on the blank 100 the piece 102 of tape-like item 101 prepared by the preparatory device 15. As schematically represented in figures 1 and 7, the applicator unit 18 is always positioned above the conveyor belt 12 of the first movement device 11 .

[0099] A second movement device 19 operates on the applicator unit 18 to shift the applicator unit 18 above the blank 100 to allow the piece 102 of tape-like item

[0100] 101 to be applied onto a selected portion of the blank 100. The applicator unit 18 comprises an applicator device 20 which positions the piece 102 of tape-like item 101 in contact with the blank 100 and a support structure 21 which supports the applicator device 20. The applicator device 20 is carried by the support structure 21 when the support structure 21 is moved by the second movement device 19.

[0101] The apparatus 10 further comprises a third movement device 22 which moves at least part of the preparatory device 15 with respect to the supply device 13 in such a way as to be able to arrange the tape-like item 101 at the applicator unit 18.

[0102] To apply the piece 102 of tape-like item 101 on the blank 100 without interrupting the continuous movement of the blank 100, the supply device 13 makes the tapelike item 101 available (as illustrated in figures 2 and 8) continuously along a direction perpendicular to the machining direction X and substantially parallel to the machining plane P.

[0103] The third movement device 22 moves the accompanying element 16 to position a portion of the tape-like item 101 at the support structure 21 of the applicator unit 18, as illustrated in figures 3 and 9, while the first movement device 11 continuously moves the blank 100 along the machining direction X.

[0104] During this operation, the second movement device 19 positions the support structure 21 in a static condition in which the support structure 21 does not move while the first movement device 11 continuously moves the blank 100 along the machining direction X.

[0105] When the accompanying element 16 has positioned the portion of tape-like item 101 at the support structure 21 of the applicator unit 18, the knife 17 is operated which cuts the piece 102 of tape-like item 101 to be applied on the blank 100, as schematically illustrated in figure 4. This operation is performed while the first movement device 11 continuously moves the blank 100 along the machining direction X and while the support structure 21 is in the static condition.

[0106] At this point, the second movement device 19 places the support structure 21 , and with it the applicator device 20, in a condition of continuous movement. During this operation, the first movement device 11 continuously moves the blank 100 along the machining direction X. During this operation, the support structure 21 is moved by the second movement device 19 to move above the portion of blank 100 on which the piece 102 of tape-like item 101 is to be applied. When the support structure 21 reaches the portion of blank 100 on which the piece 102 of tape-like item is to be applied, the second movement device 19 moves the support structure 21 , and with it the applicator device 20 and the portion 102 of tape-like item 101 , at the same velocity as the blank 100 along the machining direction X, so that along said machining direction X the support structure 21 and the applicator device 20 have zero relative velocity with respect to the blank 100. When the support structure 21 reaches the portion of blank 100 on which the piece 102 of tape-like item is to be applied, the second movement device 19 places the piece 102 of tape-like item 101 in contact with the blank 100, as illustrated in figures 5 and 10. In this way, the piece 102 of tape-like item 101 is applied to the blank 100.

[0107] In this regard, the piece 102 of tape-like item 101 may comprise an adhesive surface facing the blank 100, so as to be able to make the piece 102 of tape-like item 101 adhere to the blank 100 when the second movement device 19 places the piece 102 of tape-like item 101 in contact with the blank 100.

[0108] In accordance with the first embodiment illustrated in figures 1 to 5, the second movement device 19 moves the support structure 21 of the applicator unit 18 by translating it along a direction parallel to the machining direction X and parallel to the machining plane P between the static condition and the condition of continuous movement of the support structure 21 .

[0109] The second movement device 19 furthermore moves the support structure 21 in a direction perpendicular to the machining direction X and perpendicular to the machining plane P to lower the support structure 21 on the blank 100. The second movement device 19 lowers the support structure 21 on the blank 100 while the first movement device 11 continuously moves the blank 100 along the machining direction X.

[0110] In this regard, the second movement device 19 comprises a first movement actuator 23 and a second movement actuator 24, as schematized in figure 1 . The first movement actuator 23 is configured to move the support structure 21 along the machining direction X and the second movement actuator 24 is configured to lower the support structure 21 on the blank 100.

[0111] As schematized in figure 1 , the second movement device 19 further comprises a slide 25 configured to mechanically couple the support structure 21 to the first movement actuator 23 and to the second movement actuator 24.

[0112] As schematized in figure 1 , the first movement actuator 23 comprises a pair of guide tracks 26 that develop parallel to the machining direction X and parallel to the machining plane P. The slide 25 is slidably associated with the guide tracks 26 to slide along the guide tracks 26. The applicator unit 18 is integral with the slide 26 for movements parallel to the machining direction X and parallel to the machining plane P. An electric motor 27 of the first movement actuator 23 sets the slide 26 in motion along the guide tracks 26.

[0113] The second movement actuator 24 comprises a vertical upright 28 that slidably engages the slide 25 along a direction perpendicular to the machining direction X and perpendicular to the machining plane P. The vertical upright 28 is constrained to the support structure 21 in such a way that any movement of the vertical upright 28 results in a movement of the support structure 21 . An electric motor 29 of the second movement actuator 24 sets in motion the vertical upright 28 with respect to the slide 25.

[0114] It should be noted that, when the slide 25 moves translating along the guide tracks 26, the vertical upright 28 and with it the support structure 21 follow the translational movement of the slide 25.

[0115] In the first embodiment, the accompanying element 16 is slidably mounted on the support structure 21 of the applicator unit 18. The third movement device 22 translates the accompanying element 16 along the support structure 21 in a direction perpendicular to the machining direction X and parallel to the machining plane P. The third movement device 22 translates the accompanying element 16 along the support structure 21 when the support structure 21 is in the static condition.

[0116] In the first embodiment, the accompanying element 16 comprises a first gripper 30 and a second gripper 31 , as schematically illustrated in figure 6.

[0117] The first gripper 30 comprises a pair of jaws 32 that open and close to grasp a free flap 103 of the tape-like item 101. Similarly, the second gripper 31 comprises a pair of jaws 33 that open and close to grasp a portion of the tape-like item 101 subsequent to the free flap 103.

[0118] The first gripper 30 is slidably mounted on the support structure 21 through a mounting bracket 34 constrained to the first gripper 30 and slidably inserted into a groove 35 of the support structure 21 , as schematically represented in figure 6. The second gripper 31 is also slidably mounted on the support structure 21 through a mounting bracket 36 constrained to the second gripper 31 and slidably inserted into the groove 35 of the support structure 21 , The first gripper 30 is translatable away from the second gripper 31 in a direction perpendicular to the machining direction X and parallel to the machining plane P. For this purpose, by translating the mounting brackets 34, 36 away from each other, the first gripper 30 and the second gripper 31 move away from each other.

[0119] In this embodiment, when the supply device 11 supplies the tape-like item 101 to the preparatory device 15, the support structure 21 is in the static condition and the first gripper 30 grasps, with its jaws 32, the free flap 103 of the tape-like item 101 , as schematically illustrated in figure 2. The third movement device 22 sets the first gripper 30 in motion moving it away from the second gripper 31 . The first gripper 31 then arranges the tape-like item 101 in a direction perpendicular to the machining direction X and parallel to the machining plane P, as schematically illustrated in figure 3. When the first gripper 30 has reached a desired position away from the second gripper 31 , the second gripper 31 closes its jaws 33 grasping a portion of the tape-like item 101. In this way, a piece 102 of tape-like item 101 remains retained by the first gripper 30 and by the second gripper 31. The knife 17 is then activated which cuts the piece 102 of tape-like item 101 to separate it from the rest of the tape-like item 101 , as schematically illustrated in figure 4. The knife 17 cuts the piece 102 of tape-like item 101 upstream of the second gripper 31 , i.e. in a position not comprised between the first gripper 30 and the second gripper 31. The piece 102 of tape-like item 101 remains then retained by the first gripper 30 and by the second gripper 31 .

[0120] When the second movement device 19 shifts the applicator unit 18 on the blank 100 while the first movement device 13 continuously moves the blank 100 along the machining direction X, the first gripper 30 and the second gripper 31 , and with them the piece 102 of tape-like item 100, move integrally with the support structure 21 .

[0121] As schematically illustrated in figure 6, the applicator device 20 comprises a first applicator roller 37 and a second applicator roller 38. The first applicator roller 37 translates along the support structure 21 integrally with the first gripper 30 and the second applicator roller 38 translates along the support structure 21 integrally with the second gripper 31 . The first applicator roller 37 is mounted on the first gripper 30 and the second applicator roller 38 is mounted on the second gripper 31 , as illustrated in figure 6. The equipment defined by the first gripper 30 and by the first applicator roller 37 is rotatable around a rotation axis parallel to the machining direction X and to the machining plane P. Similarly, the equipment defined by the second gripper 31 and by the second applicator roller 38 is rotatable around a rotation axis parallel to the machining direction X and to the machining plane P.

[0122] In this embodiment, when the piece 102 of tape-like item 101 has been cut and is retained by the first gripper 30 and by the second gripper 31 , the second movement device 19 brings the support structure 21 above the blank 100 in the manner described above. When the second movement actuator 24 lowers the support structure 21 on the blank 100, the third movement device 22 rotates the first applicator roller 37 and the second applicator roller 38 by 90° so as to face the piece 102 of tape-like item 101 to the blank 100, as illustrated in figure 6. In this condition, the first applicator roller 37 and the second applicator roller 38 exert a pressure on the piece 102 of tape-like item 101 making it adhere to the blank 100. Furthermore, to better apply the piece 102 of tape-like item 101 on the blank 100, the third movement device 22 moves the first applicator roller 37 reciprocally away from the second applicator roller 38 along a direction perpendicular to the machining direction X and parallel to the machining plane P. This is actuated while the first movement device 11 continuously moves the blank 100 along the machining direction X and while the first movement actuator 23 moves the support structure 21 along the machining direction X at a velocity equal to the transport velocity of the blank 100.

[0123] In this embodiment, as mentioned above, the third movement device 22 moves the first gripper 30, the second gripper 31 , the first applicator roller 37 and the second applicator roller 38. In this regard, the third movement device 22 comprises a respective first movement actuator 39.

[0124] The first movement actuator 39 of the third movement device 22 comprises an electric motor 40 (schematized in figure 6) and a mechanical transmission 41 (schematized in figure 6), for example a belt or a chain, which connects the electric motor 40 to the first gripper 30 and to the second gripper 31 . The electric motor 40 moves the first gripper 30, the second gripper 31 and with them the first applicator roller 37 and the second applicator roller 38, through the mechanical transmission 41.

[0125] The third movement device 22 further comprises a second movement actuator 42 configured to rotate the first applicator roller 37 and the second applicator roller 38. In particular, the second movement actuator 42 is configured to rotate the equipment made by the first gripper 30 and by the first applicator roller 37 and to rotate the equipment made by the second gripper 31 and by the second applicator roller 38. The second movement actuator 42 comprises a first rotation electric motor 43 and a second rotation electric motor 44. The first rotation electric motor 43 acts to rotate the equipment made by the first gripper 30 and by the first applicator roller 37. The second rotation electric motor 44 acts to rotate the equipment made by the second gripper 31 and by the second applicator roller 38.

[0126] In accordance with the second embodiment illustrated in figures 7 to 10, the second movement device 19 rotates the support structure 21 of the applicator unit 18, around a rotation axis Y perpendicular to the machining direction X and parallel to the machining plane P, between the static condition and the condition of continuous movement of the support structure 21 .

[0127] In this embodiment, the support structure 21 is a support roller 45 rotatable about the aforementioned rotation axis Y. The support roller 45 is positioned immediately above the blank 100.

[0128] The applicator device 20 comprises a suction wall 46 obtained or placed on the outer surface of the support roller 45. The suction wall 46 is placed in permanent fluid communication with a suction source 46a (for example a suction pump) so that from the suction wall 46 air is sucked from the external environment. The suction wall 46 extends circumferentially for a limited stretch of the outer surface of the support roller 45, preferably it extends circumferentially for a stretch with dimensions substantially equal to the transverse dimension of the tape-like item 101 . The suction wall 46 extends axially for a stretch of the outer surface of the support roller 45 at least as much as the transverse dimension of the portion of blank 100 on which the piece 102 of tape-like item 101 is to be applied.

[0129] When the second movement device 19 rotates the support roller 45 about the rotation axis Y, the suction wall 46 is brought into substantial contact with the blank 100. The second movement device 19 is configured to rotate the support roller 45 with an angular velocity such that when the suction wall 46 is in substantial contact with the blank 100, the tangential velocity of the suction wall 46 coincides with the transport velocity of the blank 100 along the machining direction X.

[0130] When the support roller 45 is in a static condition, the suction wall 46 is placed, on the support roller 45, on the diametrically opposite side with respect to the blank 100.

[0131] The second movement device 19 comprises an electric motor 47. In this embodiment, the accompanying element 16 of the preparatory device 15 accompanies the piece 102 of tape-like item 101 on the suction wall 46 when the support roller 45 is in the static condition. The accompanying element 16 comprises an accompanying roller 48 which is translated by the third movement device 22 along the suction wall 46. The third movement device 22 shifts the accompanying roller 48 along a direction perpendicular to the machining direction X and parallel to the machining plane P. This direction is parallel to the rotation axis Y of the support roller 45.

[0132] The third movement device 22 comprises a carriage 49 on which the accompanying roller 48 is mounted. The third movement device 22 further comprises a carriage frame 50 on which the carriage 49 is slidably mounted. The carriage frame 50 is static and fixed with respect to the reel 14, as schematically illustrated in figure 7. The carriage 49 translates along the carriage frame 50 in a direction perpendicular to the machining direction X and parallel to the machining plane P. For this purpose, the third movement device 22 comprises an electric motor 51 for driving in translation the carriage 49 along the carriage frame 50. The carriage frame 50 comprises a mechanical transmission 52 (schematized in figure 7), for example a belt or a chain, which connects the electric motor 51 to the carriage 49. The electric motor 51 drives the carriage 49 through the mechanical transmission 52. The knife 17 is mounted on the carriage 49 and is therefore integral in translation with the accompanying roller 48.

[0133] In this embodiment, when the supply device 11 supplies the tape-like item 101 to the preparatory device 15, the support structure 21 is in the static condition and a free flap 103 of the tape-like item 101 is placed at the accompanying roller 48, as schematically illustrated in figure 8. The free flap 103 of the tape-like item 101 is accompanied by the accompanying roller 48 restingly on the suction wall 46 of the support roller 45. The accompanying roller 45 is in the static condition with the suction wall 46 facing towards the accompanying roller 48. The suction wall 46 retains the free flap 103 of the tape-like item 101 .

[0134] At this point, the third movement device 22 sets in motion the carriage 49 and with it the accompanying roller 48 along the carriage frame 50. The accompanying roller 48 accompanies successive portions of the tape-like item 101 on the suction wall 46 which retains these successive portions of the tapelike item, as schematically represented in figure 9. The accompanying roller 45 continues to remain in the static condition while the third movement device translates the accompanying roller 48 along the suction wall 46. When the accompanying roller 48 has reached a desired position, for example a final axial end of the suction wall 46, a piece 102 of tape-like item 101 remains retained on the suction wall. The knife 17 is then activated which cuts the piece 102 of tape-like item 101 to separate it from the rest of the tape-like item 101. The knife 17 cuts the piece 102 of tape-like item 101 upstream of the accompanying roller 48. The piece 102 of tape-like item 101 remains then retained on the suction wall 46 of the support roller 45.

[0135] At this point, the second movement device 19 shifts the applicator unit 18 on the blank 100 while the first movement device 13 continuously moves the blank 100 along the machining direction X. In particular, the support roller 45 rotates around the rotation axis Y bringing the suction wall 46 into substantial contact with the blank 100 (with the piece 102 of tape-like item 101 interposed), as schematically illustrated in figure 10. When the suction wall 46 reaches the blank 100, its velocity measured in the machining direction X is equal to the transport velocity of the blank along the machining direction X.

[0136] In this way, the piece 102 of the tape-like item 101 is applied onto the blank along a direction transverse to the machining direction X.

[0137] As mentioned above, the piece 102 of tape-like item 101 may comprise an adhesive surface facing towards the blank 100, so as to be able to make the piece 102 of tape-like item 101 adhere to the blank 100. The support roller 45 brings the piece 102 of tape-like item 101 in contact with the blank 100.

Claims

CLAIMS1 . Apparatus (10) for making a semi-finished box from a blank comprising: a supply device (13) configured to supply at least one tape-like item (101 ); an applicator unit (18) configured to apply a piece (102) of said at least one tapelike item (101 ) onto a blank (100); a preparatory device (15) configured to receive said at least one tape-like item(101 ) from the supply device (13) and to make at least one piece (102) of tapelike item (101 ) available to the applicator unit (18); a first movement device (11 ) configured to continuously move the blank (100) along a machining direction (X); a second movement device (19) configured to shift the applicator unit (18) on the blank (100) while the first movement device (11 ) continuously moves the blank (100) along the machining direction (X); a third movement device (22) configured to move at least part of the preparatory device (15) with respect to the supply device (13) while the preparatory device (15) makes said at least one piece (102) of tape-like item (101 ).

2. Apparatus (10) according to claim 1 , wherein said third movement device (22) is configured to move an accompanying element (16) of the preparatory device (15), configured to manipulate said at least one tape-like item (101 ), while the first movement device (11 ) continuously moves the blank (100) along the machining direction (X).

3. Apparatus (10) according to claim 1 or 2, wherein said applicator unit (18) comprises an applicator device (20), configured to position said at least one piece(102) of tape-like item (101 ) in contact with the blank (100), and a support structure (21 ) for said applicator device (20).

4. Apparatus (10) according to claims 2 and 3, wherein said second movement device (19) is configured to move said support structure (21 ) of the applicator unit (18) between a static condition in which said support structure (21 ) is found while said third movement device (22) moves said accompanying element (16), and a continuous movement condition in which said support structure (21 ) is found while the applicator device (15) positions said at least one piece (102) of tapelike item (101 ) in contact with the blank (100).

5. Apparatus (10) according to claim 2 and 3 or according to claim 4, whereinsaid third movement device (22) is configured to move said accompanying element (16) of the preparatory device (15) with respect to said support structure (21 ) of the applicator unit (18) while the first movement device (11 ) continuously moves the blank (100) along the machining direction (X).

6. Apparatus (10) according to claim 5, wherein said third movement device (22) is configured to move said accompanying element (16) of the preparatory device (15) perpendicularly to said machining direction (X) while the first movement device (11 ) continuously moves the blank (100) along the machining direction (X).

7. Apparatus (10) according to any one of claims 3 to 6, wherein said second movement device (19) is configured to move said support structure (21 ) and said applicator device (20) and to position the applicator device (20) above the blank (100) while the first movement device (11 ) continuously moves the blank (100) along said machining direction (X).

8. Apparatus (10) according to claim 7, wherein said second movement device(19) is configured to move said support structure (21 ) and said applicator device(20) parallel to said machining direction (X) while the first movement device (11 ) continuously moves the blank (100) along said machining direction (X).

9. Apparatus (10) according to claim 7 or 8, wherein said second movement device (19) is configured to move the applicator device (20) so that the applicator device (20) has zero relative velocity with respect to the blank (100) along said machining direction (X) and while the applicator device (20) positions said at least one piece (102) of tape-like item (101 ) in contact with the blank (100).

10. Apparatus (10) according to any one of the preceding claims, wherein said preparatory device (15) comprises a knife (17) configured to make said piece (102) of tape-like item (101 ) by cutting said tape-like item (101 ) coming from said supply device (13) while the first movement device (11 ) continuously moves the blank (100) along the machining direction (X); said knife (17) being configured to cut said tape-like item (101 ) along a direction parallel to the machining direction (X).

11. Apparatus (10) according to claim 2, wherein said accompanying element (16) comprises a first gripper (30) configured to grasp a free flap (103) of the tape-like item (101 ) and to be shifted by said third movement device (22) while grasping said free flap (103); said accompanying element (16) comprising a second gripper (31 ) configured to grasp a portion of the tape-like item (101 ) which is distal from said free flap (103).

12. Apparatus (10) according to claims 10 and 11 , wherein said second gripper (31 ) is configured to grasp said portion of the tape-like item (101 ) while said knife (17) cuts said tape-like item (101 ).

13. Apparatus (10) according to claim 3, wherein said applicator device (20) comprises a first applicator roller (37) and a second applicator roller (38) movable reciprocally away from each other along a direction perpendicular to said machining direction (X).

14. Apparatus (10) according to claims 11 and 13, wherein said first applicator roller (37) is mounted on said first gripper (30) and wherein said second applicator roller (38) is mounted on said second gripper (31 ).

15. Apparatus (10) according to claim 14, wherein said third movement device (22) is further configured to move said first applicator roller (37) and said second applicator roller (38) reciprocally away from each other along a direction perpendicular to said machining direction (X).

16. Apparatus (10) according to claim 15, wherein said third movement device (22) is further configured to rotate said first gripper (30) and said second gripper (31 ) so as to face said first applicator roller (37) and said second applicator roller (38) to said blank (100).

17. Apparatus (10) according to claim 3, wherein said applicator device (20) comprises a suction wall (46) and wherein said support structure (21 ) comprises a support roller (45), wherein said suction wall (46) is mounted or obtained on an outer surface of said support roller (45); said second movement device (19) being configured to rotate said support roller (45) so as to face said suction wall (46) to said blank (100).

18. Apparatus (10) according to claim 2, wherein said accompanying element (16) is an accompanying roller (48) configured to accompany said tape-like item (101 ) and to be shifted by said third movement device (22) while it accompaniessaid tape-like item (101 ).

19. Apparatus (10) according to claims 4 and 17 and 18, wherein said accompanying roller (48) is configured to accompany said tape-like item (101 ) on said suction wall (46) while the first movement device (11 ) moves the blank (100) along the machining direction (X) and while the support roller (45) is in the static condition.

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