A method of preparing a carton blank from a sheet of paperboard and a related machine

Abstract

A method for realizing a blank (1) for packing one or more articles (3) from a cardboard sheet (2) for packaging, comprising the steps of: supplying the cardboard sheet (2); arranging a marking device (4) including: a first support (5) carrying a first marking tool (6) and a second marking tool (7); a second support (8) carrying a third marking tool (9) and a fourth marking tool (10); detecting and storing the dimensions of one or more articles (3) and, based on the detected and stored dimension values, the method comprising the steps of: adjusting the distance between the first marking tool and the second marking tool (6, 7) in such a way as to realize a first marking (11) and a second marking (12) parallel to the direction of travel (D); and simultaneously moving... The first support (5) and the first and second drawing tools (6, 7) are moved such that they achieve a third drawing (16) and a fourth drawing (17) that are tilted relative to the forward direction (D); the first and second drawing tools (6, 7) are moved such that they achieve a fifth drawing (18) that is transverse relative to the forward direction (D); the second support (8) is moved and the third and fourth drawing tools (9, 10) are moved such that they achieve a sixth drawing (19) and a seventh drawing (20) that are tilted relative to the forward direction (D); the third and fourth drawing tools (9, 10) are moved such that they achieve an eighth drawing (21) that is transverse relative to the forward direction (D).

Description

Technical Field

[0001] This invention relates to the technical field of obtaining blanks for cardboard boxes, which are used to package one or more items.

[0002] Specifically, the present invention relates to a method for producing blanks for packing one or more articles from a cardboard sheet for packaging, and a related machine for actuating the method. Background Technology

[0003] A cardboard sheet for packaging can be used for a variety of purposes, such as for forming cardboard boxes.

[0004] In this case, fold lines, also known as scribing lines, must first be formed to divide the cardboard sheet used for packaging into multiple parts in order to obtain a blank, and cutting lines are formed in a similar manner.

[0005] Therefore, the various parts of the blank can be easily folded around the scribed lines to obtain a cardboard box for packing one or more items in a simple and quick manner, avoiding deformation and cracks in the cardboard sheet used for packaging during the folding step.

[0006] To date, known methods for producing blanks for packing one or more items from cardboard sheets used for packaging include using scribing or cutting tools of the mechanical type used to make scribing and cutting lines, such as scribing cutters, blades, or knives.

[0007] When a cardboard sheet of a predetermined size is supplied, the same applies to each work cycle. The tools can be positioned and configured to always perform the same movement path because they are adjusted to perform predetermined activities on the cardboard sheet.

[0008] This aspect constitutes a limitation because for each work cycle, a sheet of cardboard of the same size must be supplied when it enters the machine that performs the step of realizing the blank; otherwise, the realization of the scribing or cutting lines may be performed incorrectly and inaccurately, i.e., not in the required position.

[0009] Furthermore, once again, when the cardboard sheet is supplied in a form with a predetermined size, or when the cardboard sheet is supplied in a form with a different size than the aforementioned, it may be necessary to form scribing lines at different locations in one blank and the next blank. Therefore, the tool will form scribing or cutting lines at different locations according to the size of one or more items to be packed.

[0010] In this situation, the mechanical marking and cutting tools must be disassembled in order to reposition and reconfigure them according to the dimensions of one or more items to be packed.

[0011] In the most extreme case, where it is impossible to reposition and reconfigure the mechanical cutting tool, it is possible to use different machines to correctly form the scribing (i.e., in the required position).

[0012] As an alternative to the foregoing, scribing or cutting lines on the blank can be made using a laser beam, and thus a laser-type scribing device is available.

[0013] However, although laser-type scribing devices can easily manage dimensional variations because they are configured to be oriented according to the size of one or more items to be packed and according to the cardboard sheet, the fact that they are laser-type makes scribing devices particularly expensive, thus increasing the production cost of the blanks to be produced. Summary of the Invention

[0014] In view of the above, the purpose of this invention is to eliminate the aforementioned disadvantages of the prior art.

[0015] The above-mentioned objective is achieved by the method of the present invention for producing blanks for packing one or more articles from cardboard sheets for packaging, and the machine described herein for actuating the method for producing blanks for packing one or more articles from cardboard sheets for packaging.

[0016] Advantageously, the scribing device, comprising a first support for carrying the first and second scribing tools and a second support for carrying the third and fourth scribing tools, moves together with the movement of the first and second scribing tools along the first support and the movement of the third and fourth scribing tools along the second support in a first and a second direction parallel to the direction of travel, respectively, so that scribing on the blank can be performed according to the dimensions of one or more items to be boxed and stored.

[0017] Therefore, when marking is achieved according to the dimensions of one or more items to be packed, and thus the movement of the marking device is realized, cardboard sheets of different sizes can be easily supplied.

[0018] Compared to known methods and machines that use laser-type scribing devices, the method and machine for which this invention is intended can achieve scribing at a lower cost while ensuring the same results are obtained using these devices. Attached Figure Description

[0019] Specific embodiments of the present invention will be described in the following parts of this specification with reference to the accompanying drawings, wherein: - Figure 1 This is a perspective view of the machine of the present invention; - Figure 2-13This is a perspective view of some components of the machine of the present invention, which is also the object of the present invention during some steps of performing the method of the present invention; - Figure 11A yes Figure 11 A detailed view of W; - Figure 14-16 In different steps of the method Figure 10 A perspective view of the details of K. Detailed Implementation

[0020] Referring to the attached figures, reference numeral (1) generally indicates a blank for packing one or more articles (3) from a cardboard sheet (2) used for packaging.

[0021] The following describes a method for packing one or more articles (3) from a cardboard sheet (2) for packaging, in order to achieve the objectives of the present invention, comprising the following steps: A conveyor (23) is arranged to supply cardboard sheets (2) for packaging according to the forward direction (D); A detection device (24) is arranged for detecting the size of one or more items (3) to be packed. The marking device (4) includes: A first support member (5) is arranged transversely to the forward direction (D) and is movable along a first direction (D1) parallel to the forward direction (D). The first support member carries a first marking tool (6) and a second marking tool (7), which are movable toward and away from each other along the first support member (5). The second support (8) is arranged transversely to the forward direction (D) and is movable along a second direction (D2) parallel to the forward direction (D). The second support carries the third marking tool (9) and the fourth marking tool (10), which are movable toward and away from each other along the second support (8). The size of one or more items (3) to be packed is detected and stored using a detection device (24).

[0022] Based on the detected and stored size values, the method further includes the following steps: The distance between the first scribing tool (6) and the second scribing tool (7) along the first support (5) is adjusted so that as the cardboard sheet (2) moves along the forward direction (D), the first scribing tool (6) makes a first scribing line (11) parallel to the forward direction (D), and the second scribing tool (7) makes a second scribing line (12) parallel to the first scribing line (11), so as to define the cardboard sheet (2): The central section (13) is included between the first scribe line (11) and the second scribe line (12); the first lateral section (14) is included between the first scribe line (11) and the first lateral edge (2a) of the cardboard sheet (2), the first lateral edge (2a) being parallel to the direction of travel (D); the second lateral section (15) is included between the second scribe line (12) and the second lateral edge (2b) of the cardboard sheet (2), the second lateral edge (2b) being parallel to the first lateral edge (2a). The first support (5) is moved relative to the cardboard sheet (2) along a first direction (D1), and simultaneously the first marking tool (6) and the second marking tool (7) are moved along the first support (5) such that: the first marking tool (6) creates a third marking (16) in the first lateral section (14) between the first lateral edge (2a) of the cardboard sheet (2) and the first marking (11), the third marking (16) being inclined relative to the forward direction (D) and intersecting the first marking (11) at the first intersection point (P1); the second marking tool (7) creates a fourth marking (17) in the second lateral section (15) between the second lateral edge (2b) of the cardboard sheet (2) and the second marking (12), the fourth marking (17) being inclined relative to the forward direction (D) and intersecting the second marking (12) at the second intersection point (P2); Move the first marking tool (6) and the second marking tool (7) along the first support (5) so that the first marking tool (6) and the second marking tool (7) make a fifth marking (18), the fifth marking (18) being transverse to the forward direction (D) and extending between the first lateral edge (2a) and the second lateral edge (2b) of the cardboard sheet (2) and intersecting with the first marking (11) at the first intersection (P1) and with the second marking (12) at the second intersection (P2) (see Figure 6-9 ).

[0023] The method further includes the following steps: The second support (8) is moved relative to the cardboard sheet (2) along the second direction (D2), and simultaneously the third scriber (9) and the fourth scriber (10) are moved along the second support (8) such that: the third scriber (9) realizes a sixth scribe (19) between the first lateral edge (2a) of the cardboard sheet (2) and the first scribe (11) in the first lateral section (14), the sixth scribe (19) being inclined relative to the forward direction (D) and intersecting the first scribe (11) at the third intersection (P3); the fourth scriber (10) realizes a seventh scribe (20) between the second lateral edge (2b) of the cardboard sheet (2) and the second scribe (12) in the second lateral section (15), the seventh scribe (20) being inclined relative to the forward direction (D) and intersecting the second scribe (12) at the fourth intersection (P4); Move the third scribing tool (9) and the fourth scribing tool (10) along the second support (8) so that the third scribing tool (9) and the fourth scribing tool (10) achieve the eighth scribing line (21), the eighth scribing line (21) being transverse to the forward direction (D) and extending between the first lateral edge (2a) and the second lateral edge (2b) of the cardboard sheet (2) and intersecting the first scribing line (11) at the third intersection (P3) and the second scribing line (12) at the fourth intersection (P4) (see Figure 5-10 ).

[0024] The first line (11) can be parallel to the first direction (D1) and the second direction (D2) (see...) Figure 6-9 ).

[0025] In the same manner, the second line (12) can be parallel to the first direction (D1) and the second direction (D2) (see...) Figure 6-9 ).

[0026] The blank (1) obtained by performing the steps of the aforementioned method may include: In the central section (13): The main part (50) is included between the fifth line (18) and the eighth line (21) and the main part has dimensions such that it covers the bottom of one or more items (3) to be packed; the first lateral part (51) and the second lateral part (52) are on opposite sides of the main part (50) relative to the fifth line (18) and the eighth line (21); In the first lateral section (14): The third lateral portion (53) is included between the fifth scribe line (18), the eighth scribe line (21), the first lateral edge (2a) of the cardboard sheet (2), and the first scribe line (11); the first reinforcing portion (53a) and the second reinforcing portion (53b) are on opposite sides of the third lateral portion (53) relative to the fifth scribe line (18) and the eighth scribe line (21), and the third scribe line and the sixth scribe line (16, 19) are implemented in the first reinforcing portion (53a) and the second reinforcing portion (53b), respectively; In the second lateral section (15): A fourth lateral portion (54) is included between the fifth scribe line (18), the eighth scribe line (21), the second scribe line (12), and the second lateral edge (2b) of the cardboard sheet (2); a third reinforcing portion (54a) and a fourth reinforcing portion (54b) are provided on the opposite sides of the fourth lateral portion (54) relative to the fifth scribe line (18) and the eighth scribe line (21), wherein the fourth scribe line (17) and the seventh scribe line (20) are respectively implemented in the third reinforcing portion (54a) and the fourth reinforcing portion (54b) (see Figure 10 ).

[0027] The paperboard sheet (2) can be a continuous paperboard sheet in the form of a paperboard strip.

[0028] In this case, the cardboard sheet (2) can be segmented according to the size of one or more items (3) to be packed.

[0029] Alternatively, the cardboard sheet (2) can be in the form of segmented cardboard sheets.

[0030] Figure 2-4 The steps for supplying the cardboard sheet (2) are shown.

[0031] Figure 2 The conveyor (23) is shown in the feeding process of the cardboard strip.

[0032] Figure 3-5 The cardboard strip is shown being segmented.

[0033] When the cardboard sheet (2) is in a fixed position or when the cardboard sheet (2) moves in the forward direction (D), the movement steps of the first support (5) and the second support (8) can be performed.

[0034] The dimensions of one or more items (3) refer to the dimensions of the top, bottom, and sides of one or more items (3) (see Figure 11 and Figure 11A ).

[0035] The first support member (5) and the second support member (8) can be arranged parallel to each other (see Figure 6-9 ).

[0036] The first support member (5) may be in the form of a rod, and the first scribing tool (6) and the second scribing tool (7) may slide along the extension axis of the first support member (5) (see...). Figure 6-9 ).

[0037] The second support (8) can be in the form of a rod, and the third scribing tool (9) and the fourth scribing tool (10) can slide along the extension axis of the second support (8) (see Figure 6-9 ).

[0038] The first direction (D1) and the second direction (D2) can be parallel to each other (see...). Figure 6-9 ).

[0039] When the first support member (5) and the second support member (8) are arranged on the same plane, the first direction (D1) and the second direction (D2) can coincide with each other (see Figure 6-9 ).

[0040] The first scribe line (11) and the second scribe line (12) may extend between the third lateral edge (2c) and the fourth lateral edge (2d) of the cardboard sheet (2), wherein the third lateral edge (2c) and the fourth lateral edge (2d) of the cardboard sheet (2) are transverse to the direction of travel (D) (see Figure 10 ).

[0041] The third lateral edge (2c) and the fourth lateral edge (2d) connect the first lateral edge (2a) and the second lateral edge (2b) of the cardboard sheet (2) to each other (see Figure 10 ).

[0042] During the movement of the first marking tool (6) and the second marking tool (7), these tools may take an extended position in which they come into contact with the cardboard sheet (2).

[0043] In the same manner, during the movement steps of the third marking tool (9) and the fourth marking tool (10), these marking tools can take an extended position in which they come into contact with the cardboard sheet (2).

[0044] Furthermore, during the movement of the first support (5), the first marking tool (6) and the second marking tool (7) can take a retracted position in which they do not contact the cardboard sheet (2).

[0045] In the same manner, during the movement of the second support (8), the third scribing tool (9) and the fourth scribing tool (10) can take a retracted position in which they do not contact the cardboard sheet (2).

[0046] During the movement of the first support (5) and simultaneously the first marking tool (6) and the second marking tool (7), if the first support (5) moves in the same direction as the cardboard sheet supplied along the forward direction (D), then the first marking tool (6) and the second marking tool (7) can move toward each other (see...). Figure 8 ).

[0047] Alternatively, the first drawing tool (6) and the second drawing tool (7) can move away from each other (not shown).

[0048] Similar considerations can be made for the second support (8), the third scribing tool (9), and the fourth scribing tool (10) (see [link]). Figure 9 ).

[0049] In detail, Figure 9 In the process, the first support member (5) moves in the same direction as the cardboard sheet is supplied along the forward direction (D), and the first marking tool (6) and the second marking tool (7) move toward each other; at the same time, the second support member (8) moves in the same direction as the cardboard sheet is supplied along the forward direction (D), and the third marking tool (9) and the fourth marking tool (10) move away from each other.

[0050] The third line (16) and the fourth line (17) can be opposite each other (see Figure 10 ).

[0051] The third line (16) and the fourth line (17) can be inclined at 45° relative to the direction of travel (D).

[0052] The third line (16) and the fourth line (17) can be tilted toward the first line (11) and the second line (12) respectively (see Figure 10 ).

[0053] The sixth line (19) and the seventh line (20) can be opposite each other (see Figure 10 ).

[0054] The sixth line (19) and the seventh line (20) can each be inclined at 45° relative to the direction of travel (D).

[0055] The sixth line (19) and the seventh line (20) can be tilted toward the first line (11) and the second line (12) respectively (see Figure 10 ).

[0056] The third line (16) and the sixth line (19) can be opposite each other.

[0057] The fourth line (17) and the seventh line (20) can be opposite each other.

[0058] The fifth line (18) and the eighth line (21) can be perpendicular to the first line (11) and the second line (12).

[0059] The third line (16) can be extended from the first point (21a) and the first intersection (P1) of the first side edge (2a) of the cardboard sheet (2) (see Figure 10 ).

[0060] The fourth line (17) can be extended from the second point (21b) and the second intersection (P2) of the second side of the cardboard sheet (2) towards the edge (2b) (see Figure 8 and Figure 10 ).

[0061] The fifth line (18) may extend between the third point (23a) of the first lateral edge (2a) and the fourth point (24b) of the second lateral edge (2b) of the cardboard sheet (2) (see [reference]). Figure 10 ).

[0062] The sixth line (19) can be extended from the fifth point (25a) and the third intersection (P3) of the first side edge (2a) of the cardboard sheet (2) (see Figure 10 ).

[0063] The seventh line (20) can be extended from the sixth point (26b) and the fourth intersection (P4) of the second side edge (2b) of the cardboard sheet (2) (see Figure 10 ).

[0064] The eighth line (21) can be extended from the seventh point (27a) of the first lateral edge (2a) and the eighth point (28b) of the second lateral edge (2b) of the cardboard sheet (2) (see Figure 10 ).

[0065] The first support member (5) can be arranged upstream relative to the forward direction (D), and the second support member (8) can be arranged downstream relative to the forward direction (D) (see...). Figure 6-9 ).

[0066] The marking device (4) preferably includes: a third support (25) which is arranged laterally relative to the forward direction (D), and the third support is movable along a third direction (D3) parallel to the forward direction (D), and the third support carries a fifth marking tool (26) and a sixth marking tool (27), the fifth marking tool and the sixth marking tool being movable toward and away from each other along the third support (25), and the third support carries a first cutting tool (28) and a second cutting tool (29), the first cutting tool and the second cutting tool being movable toward and away from each other along the third support (25) (see [link to documentation]). Figure 6-9 ).

[0067] Furthermore, based on the detected and stored size values, the method includes the following steps: Move the fifth scribing tool (26) and the sixth scribing tool (27) along the third support (25) so that the fifth scribing tool (26) and the sixth scribing tool (27) make a ninth scribing line (30) transverse to the forward direction (D). The ninth scribing line is downstream of the fifth scribing line (18) and the eighth scribing line (21) along the forward direction (D), extends between the first scribing line (11) and the second scribing line (12), intersects the first scribing line (11) at the fifth intersection (P5), and intersects the second scribing line (12) at the sixth intersection (P6). Move the first cutting tool (28) and the second cutting tool (29) along the third support (25) such that the first cutting tool (28) achieves a first cutting line (31) in the first lateral section (14) between the first lateral edge (2a) of the cardboard sheet (2) and the first scribe line (11), the first scribe line being transverse to the forward direction (D) and intersecting the first scribe line (11) at the fifth intersection (P5), and the second cutting tool (29) achieves a second cutting line (31a) in the second lateral section (15) between the second lateral edge (2b) of the cardboard sheet (2) and the second scribe line (12), the second cutting line being transverse to the forward direction (D) and intersecting the second scribe line (12) at the sixth intersection (P6) (see...). Figure 8-10 ).

[0068] The blank (1) produced by performing the steps of the aforementioned method may advantageously include a fifth lateral portion (55) hinged to the second lateral portion (52) in the central section (13) (see Figure 10 ).

[0069] During the step of packing one or more items (3), and therefore during the step of forming a box (60) from the blank (1), the fifth lateral portion (55) covers the one or more items (3) to be packed above, ensuring the closure of the formed box (60) (see Figure 11-13 and Figure 11A ).

[0070] The third direction (D3) and the second direction (D2) can be parallel to each other.

[0071] If the third support (25), the second support (8) and the first support (5) are located on the same plane, then the third direction (D3), the second direction (D2) and the first direction can coincide with each other.

[0072] The third support (25) can be in the shape of a rod, and the fifth scribing tool (26) and the sixth scribing tool (27) can slide along the extension axis of the third support (25).

[0073] The second support member (8) can be arranged to be inserted between the first support member (5) and the third support member (25) (see Figure 6-9 ).

[0074] The fifth scribing tool (26) and the first cutting tool (28) can move simultaneously along the third support (25) in such a way that the ninth scribing line (30) and the first cutting line (31) are at least partially executed simultaneously (see...). Figure 8 and Figure 9 ).

[0075] The sixth scribing tool (27) and the second cutting tool (29) can move simultaneously along the third support (25) in such a way that the ninth scribing line (30) and the second cutting line (31a) are at least partially realized simultaneously (see Figure 8 and Figure 9 ).

[0076] The ninth line (30), the eighth line (21), and the fifth line (18) can be parallel to each other.

[0077] The ninth line (30) can be perpendicular to the first line (11) and the second line (12).

[0078] The marking device (4) preferably includes: a fourth support (32) arranged transversely to the forward direction (D), and the fourth support is movable along a fourth direction (D4) parallel to the forward direction (D), and the fourth support carries a seventh marking tool (33) and an eighth marking tool (34), the seventh marking tool and the eighth marking tool being movable toward and away from each other along the fourth support (32), and the fourth support carries a third cutting tool (35) and a fourth cutting tool (36), the third cutting tool and the fourth cutting tool being movable toward and away from each other along the fourth support (32) (see...). Figure 6-9 ).

[0079] Furthermore, based on the detected and stored size values, the method includes the following steps: Move the seventh scribing tool (33) and the eighth scribing tool (34) along the fourth support (32) so that the seventh scribing tool (33) and the eighth scribing tool (34) realize the tenth scribing line (37) transverse to the forward direction (D), the tenth scribing line is downstream of the ninth scribing line (30) along the forward direction (D), it extends between the first scribing line (11) and the second scribing line (12) and intersects the first scribing line (11) at the seventh intersection (P7) and the second scribing line (12) at the eighth intersection (P8); The third cutting tool (35) and the fourth cutting tool (36) are moved along the fourth support (32) such that the third cutting tool (35) makes a third cutting line (38) in the first lateral section (14) between the first lateral edge (2a) of the cardboard sheet (2) and the first scribe line (11), the third cutting line being transverse to the forward direction (D) and intersecting the first scribe line (11) at the seventh intersection (P7), and the fourth cutting tool (36) makes a fourth cutting line (39) in the second lateral section (15) between the second lateral edge (2b) of the cardboard sheet (2) and the second scribe line (12), the fourth cutting line being transverse to the forward direction (D) and intersecting the second scribe line (12) at the eighth intersection (P8).

[0080] The blank (1) produced by the steps of the above method advantageously includes a first wing (56) hinged to a fifth lateral portion (55) in the first lateral section (14) and a second wing (57) hinged to a fifth lateral portion (55) in the second lateral section (15); the first wing (56) and the second wing (57) are arranged opposite to the fifth lateral portion (55) (see Figure 10 ).

[0081] During the step of packing one or more items (3), and therefore during the step of forming the box (60) from the blank (1), the first flap (56) and the second flap (57) overlap with the third lateral portion (53) and the fourth lateral portion (54), respectively, to give the box greater rigidity (see Figure 11-13 and Figure 11A ).

[0082] The fourth direction (D4) and the third direction (D3) can be parallel to each other.

[0083] If the fourth support member (32), the third support member (25), the second support member (8) and the first support member (5) are located on the same plane, then the fourth direction (D4), the third direction (D3), the second direction (D2) and the first direction can coincide with each other.

[0084] The first support member (5), the second support member (8), the third support member (25), and the fourth support member (32) can move simultaneously.

[0085] The fourth support (32) may be in the form of a rod, and the seventh scribing tool (33) and the eighth scribing tool (34) may slide along the extension axis of the fourth support (32) (see Figure 6-10 ).

[0086] The tenth line (37), the eighth line (21), and the fifth line (18) can be parallel to each other.

[0087] The seventh scribing tool (33) and the third cutting tool (35) can move simultaneously along the fourth support (32) in such a way that the tenth scribing line (37) and the third cutting line (38) are at least partially executed simultaneously (see...). Figure 9 and Figure 10 ).

[0088] The eighth scribing tool (34) and the fourth cutting tool (36) can move simultaneously along the fourth support (32) in such a way that the tenth scribing line (37) and the fourth cutting line (39) are at least partially executed simultaneously (see...). Figure 9 and Figure 10 ).

[0089] The third cutting tool (35) and the fourth cutting tool (36) are preferably rotatable relative to the relative rotation axis (X3, X4), which is transverse to the fourth support (32).

[0090] Furthermore, based on the detected and stored size values, the method includes the following steps: During the movement of the fourth support (32) relative to the cardboard sheet (2) in the fourth direction (D4), the third cutting tool (35) is rotated about the relative rotation axis (X3) so as to be oriented to realize the fifth cutting line (40) between the seventh intersection (P7) and the third lateral edge (2c) of the cardboard sheet (2) in the direction of travel (D), and then the portion of the cardboard sheet (2) including the third cutting line (38) and the fifth cutting line (40) is removed. During the movement of the fourth support (32) relative to the cardboard sheet (2) in the fourth direction (D4), the fourth cutting tool (36) is rotated about the relative axis of rotation (X4) so ​​as to be oriented to realize the sixth cutting line (41) between the eighth intersection (P8) and the third lateral edge (2c) of the cardboard sheet (2) in the direction of travel (D), and then the portion of the cardboard sheet (2) including the fourth cutting line (39) and the sixth cutting line (41) is removed (see Figure 14-16 ).

[0091] The blank (1) produced by performing the steps of the aforementioned method may advantageously include a third wing (58) hinged to the fifth lateral portion (55), and a fixing device (59) for closing the box (60) may be arranged on the third wing (see Figure 10 ).

[0092] The fifth cutting line (40) and the sixth cutting line (41) can be arranged perpendicularly at the third cutting line (38) and the fourth cutting line (39), respectively (see Figure 10 ).

[0093] The third lateral edge (2c) of the cardboard sheet (2) can be arranged near the seventh intersection (P7) and the eighth intersection (P8).

[0094] In detail, Figure 14 The steps are shown: the third cutting tool (35) is forming the third cutting line (38) and the seventh scribing tool (33) is partially forming the tenth scribing line (37).

[0095] Figure 15 The steps of rotating the third cutting tool (35) about the relative rotation axis (X3) are shown, and Figure 16 The steps of the third cutting tool (35) partially forming the fifth cutting line (40) are shown.

[0096] See Figure 1 The following describes a machine (61) for actuating a method for loading blanks (1) for packing one or more articles (3) from a cardboard sheet (2) for packaging, according to any of the embodiments described above, the machine comprising: Conveyor (23), which is used to supply cardboard sheets (2) for packaging in the direction of travel (D); A detection device (24) is used to detect the dimensions of one or more items (3) to be packed; The marking device (4) includes: A first support member (5) is arranged transversely to the forward direction (D) and is movable along a first direction (D1) parallel to the forward direction (D). The first support member carries a first marking tool (6) and a second marking tool (7), which are movable toward and away from each other along the first support member (5). The second support (8) is arranged transversely to the forward direction (D) and is movable along a second direction (D2) parallel to the forward direction (D). The second support carries the third marking tool (9) and the fourth marking tool (10), which are movable toward and away from each other along the second support (8). The control unit (22) is configured to store the dimensions of one or more items (3) to be packed and to move the marking device (4) based on the detected and stored dimension values.

[0097] The above considerations related to the method of the present invention are also valid for the machine (61), which is also the object of the present invention.

[0098] In the same manner, the machine (61) and the method for producing blanks (1) for packing one or more articles (3) from cardboard sheets (2) for packaging have the same advantages as described above.

[0099] The first support member (5) can be arranged upstream relative to the forward direction (D), and the second support member (8) can be arranged downstream relative to the forward direction (D).

[0100] The marking device (4) may include: a third support (25) which is arranged laterally relative to the forward direction (D) and is movable along a third direction (D3) parallel to the forward direction (D), and the third support carries a fifth marking tool (26) and a sixth marking tool (27) which are movable toward and away from each other along the third support (25), and the third support carries a first cutting tool (28) and a second cutting tool (29) which are movable toward and away from each other along the third support (25).

[0101] Furthermore, the marking device (4) may include: a fourth support (32) arranged transversely to the forward direction (D), and the fourth support is movable along a fourth direction (D4) parallel to the forward direction (D), and the fourth support carries a seventh marking tool (33) and an eighth marking tool (34), which are movable toward and away from each other along the fourth support (32), and the fourth support carries a third cutting tool (35) and a fourth cutting tool (36), which are movable toward and away from each other along the fourth support (32).

[0102] The third cutting tool (35) and the fourth cutting tool (36) can rotate relative to the relative rotation axis (X3, X4), which is transverse to the fourth support (32).

[0103] The machine (61) may include a cutting device (62) arranged to perform parallel or transverse cuts in the forward direction (D) to select the cardboard sheet (2) (see...). Figure 3 and Figure 4 ).

[0104] These cutting devices (62) can be arranged upstream relative to the marking device (4) along the forward direction (D) (see...) Figure 1 , Figure 4 and Figure 5 ).

[0105] The machine (61) may further include a frame (63), which in turn includes a pair of longitudinal members (64a, 64b) extending parallel to the forward direction (D), each longitudinal member being equipped with a guide (65a, 65b), along which a first support (5) and a second support (8) can slide (see Figure 6 and Figure 7 ).

[0106] The first support member (5) can be moved by a related electric motor (5a), and the second support member (8) can be moved by a related electric motor (8a) (see...). Figure 6 and Figure 7 ).

[0107] In sequence: the first scribing tool (6) and the second scribing tool (7) can be moved by a related motor (5b), and the third scribing tool (9) and the fourth scribing tool (10) can be moved by a related motor (8b) (see...) Figure 6 and Figure 7 ).

[0108] Reference Figure 6-10 The machine (61) may include a support plane (66) for receiving the cardboard sheet (2) at rest during the movement of the marking device (4).

[0109] The third support member (25) can be moved by a related electric motor (25a), and the fourth support member (32) can be moved by a related electric motor (32a) (see...). Figure 6 and Figure 7 ).

[0110] The third support (25) and the fourth support (32) can slide along the guides (65a, 65b) (see Figure 6 and Figure 7 ).

[0111] In sequence: the fifth marking tool (26), the sixth marking tool (27), the first cutting tool (28) and the second cutting tool (29) can be moved by an associated electric motor (not shown), and the seventh marking tool (33), the eighth marking tool (34), the third cutting tool (35) and the fourth cutting tool (36) can be moved by an associated electric motor (not shown).

[0112] The rotation of the third cutting tool (35) around the relative axis of rotation (X3) and the rotation of the fourth cutting tool (36) around the relative axis of rotation (X4) can be actuated by an electric motor.

[0113] The first cutting tool (28), the second cutting tool (29), the third cutting tool (35) and the fourth cutting tool (36) can be in the shape of a blade.

[0114] Once the blank (1) is completed, the one or more items (3) are packed in a box (60) obtained in the following steps: Arrange one or more items (3) on the main part (50); Fold the first lateral portion (51) relative to the fifth line (18), the second lateral portion (52) relative to the eighth line (21), the third lateral portion (53) relative to the first line (11), and the fourth lateral portion (54) relative to the second line (12) toward one or more items (3), and simultaneously fold the first reinforcing portion (53a) relative to the third line (16) onto itself, the second reinforcing portion (53b) relative to the sixth line (19), the third reinforcing portion (54a) relative to the fourth line (17), and the fourth reinforcing portion (54b) relative to the seventh line (20) in such a way that they are arranged to face the one or more items (3); Fold the fifth lateral portion (55) relative to the ninth line (30) toward one or more items (3); The first winglet (56) is folded relative to the first scribing line (11) and the second winglet (57) is folded relative to the second scribing line (12), such that they are arranged to overlap the third lateral portion (53) and the fourth lateral portion (54), respectively. The third wing (58) is folded relative to the tenth line (37) in such a way that the third wing (58) is arranged to overlap the first lateral portion (51) (see Figure 11-13 and Figure 11A ).

Claims

1. A method for preparing a packing blank (1) from a cardboard sheet (2), comprising the following steps: A conveyor (23) is arranged to supply cardboard sheets (2) for packaging according to the forward direction (D); A detection device (24) is arranged for detecting the size of one or more items (3) to be packed. The marking device (4) includes: A first support member (5) is arranged transversely to the forward direction (D) and is movable along a first direction (D1) parallel to the forward direction (D). The first support member carries a first marking tool (6) and a second marking tool (7), which are movable toward and away from each other along the first support member (5). The second support (8) is arranged transversely to the forward direction (D) and is movable along a second direction (D2) parallel to the forward direction (D). The second support carries a third marking tool (9) and a fourth marking tool (10), which are movable toward and away from each other along the second support (8). The size of one or more items to be packed (3) is detected and stored using the detection device (24); Based on the detected and stored size values, the method includes the following steps: The distance between the first marking tool (6) and the second marking tool (7) along the first support (5) is adjusted such that, as the cardboard sheet (2) moves along the forward direction (D), the first marking tool (6) executes a first marking (11) parallel to the forward direction (D), and the second marking tool (7) executes a second marking (12) parallel to the first marking (11), so as to define on the cardboard sheet (2): The document includes a central section (13) between the first scribe line (11) and the second scribe line (12); a first lateral section (14) between the first scribe line (11) and a first lateral edge (2a) of the cardboard sheet (2), the first lateral edge (2a) being parallel to the direction of travel (D); and a second lateral section (15) between the second scribe line (12) and a second lateral edge (2b) of the cardboard sheet (2), the second lateral edge (2b) being parallel to the first lateral edge (2a). Move the first support member (5) relative to the cardboard sheet (2) along the first direction (D1), and simultaneously move the first marking tool (6) and the second marking tool (7) along the first support member (5), such that: The first marking tool (6) makes a third marking (16) in the first lateral section (14) between the first lateral edge (2a) of the cardboard sheet (2) and the first marking (11), the third marking (16) being inclined relative to the forward direction (D) and intersecting the first marking (11) at the first intersection (P1); The second marking tool (7) makes a fourth marking (17) in the second lateral section (15) between the second lateral edge (2b) of the cardboard sheet (2) and the second marking (12), the fourth marking (17) being inclined relative to the forward direction (D) and intersecting the second marking (12) at the second intersection (P2); Move the first marking tool (6) and the second marking tool (7) along the first support (5) such that the first marking tool (6) and the second marking tool (7) make a fifth marking (18), the fifth marking (18) being transverse to the forward direction (D) and extending between the first lateral edge (2a) and the second lateral edge (2b) of the cardboard sheet (2) and intersecting the first marking (11) at the first intersection (P1) and the second marking (12) at the second intersection (P2); The second support (8) is moved relative to the cardboard sheet (2) along the second direction (D2), and the third marking tool (9) and the fourth marking tool (10) are moved along the second support (8) simultaneously, such that: The third marking tool (9) makes a sixth marking (19) in the first lateral section (14) between the first lateral edge (2a) of the cardboard sheet (2) and the first marking (11), the sixth marking (19) being inclined relative to the forward direction (D) and intersecting the first marking (11) at the third intersection (P3); The fourth marking tool (10) makes a seventh marking (20) in the second lateral section (15) between the second lateral edge (2b) of the cardboard sheet (2) and the second marking (12), the seventh marking (20) being inclined relative to the forward direction (D) and intersecting the second marking (12) at the fourth intersection (P4); Move the third marking tool (9) and the fourth marking tool (10) along the second support (8) such that the third marking tool (9) and the fourth marking tool (10) achieve an eighth marking (21), the eighth marking (21) being transverse to the forward direction (D) and extending between the first lateral edge (2a) and the second lateral edge (2b) of the cardboard sheet (2) and intersecting the first marking (11) at the third intersection (P3) and the second marking (12) at the fourth intersection (P4).

2. The method according to claim 1, wherein: The first support member (5) is positioned upstream relative to the direction of travel (D); The second support member (8) is arranged downstream relative to the forward direction (D).

3. The method according to claim 1 or 2, wherein: The marking device (4) includes: a third support (25) arranged transversely to the forward direction (D) and movable along a third direction (D3) parallel to the forward direction (D), and the third support carries a fifth marking tool (26) and a sixth marking tool (27), the fifth marking tool and the sixth marking tool being movable toward and away from each other along the third support (25), and the third support carries a first cutting tool (28) and a second cutting tool (29), the first cutting tool and the second cutting tool being movable toward and away from each other along the third support (25); Based on the detected and stored size values, the method includes the following steps: Move the fifth marking tool (26) and the sixth marking tool (27) along the third support (25) such that the fifth marking tool (26) and the sixth marking tool (27) achieve a ninth marking (30) transverse to the forward direction (D), the ninth marking being downstream of the fifth marking (18) and the eighth marking (21) along the forward direction (D), extending between the first marking (11) and the second marking (12) and intersecting the first marking (11) at the fifth intersection (P5) and the second marking (12) at the sixth intersection (P6); The first cutting tool (28) and the second cutting tool (29) are moved along the third support (25) such that the first cutting tool (28) makes a first cutting line (31) in the first lateral section (14) between the first lateral edge (2a) of the cardboard sheet (2) and the first scribe line (11), the first scribe line being transverse to the forward direction (D) and intersecting the first scribe line (11) at the fifth intersection (P5), and the second cutting tool (29) makes a second cutting line (31a) in the second lateral section (15) between the second lateral edge (2b) of the cardboard sheet (2) and the second scribe line (12), the second cutting line being transverse to the forward direction (D) and intersecting the second scribe line (12) at the sixth intersection (P6).

4. The method according to claim 3, wherein: The marking device (4) includes: a fourth support (32) which is arranged laterally relative to the forward direction (D) and is movable along a fourth direction (D4) parallel to the forward direction (D), and the fourth support carries a seventh marking tool (33) and an eighth marking tool (34) which are movable toward and away from each other along the fourth support (32), and the fourth support carries a third cutting tool (35) and a fourth cutting tool (36) which are movable toward and away from each other along the fourth support (32); Based on the detected and stored size values, the method includes the following steps: Move the seventh marking tool (33) and the eighth marking tool (34) along the fourth support (32) so that the seventh marking tool (33) and the eighth marking tool (34) realize a tenth marking line (37) transverse to the forward direction (D), the tenth marking line being downstream of the ninth marking line (30) along the forward direction (D), extending between the first marking line (11) and the second marking line (12) and intersecting the first marking line (11) at the seventh intersection (P7) and the second marking line (12) at the eighth intersection (P8); The third cutting tool (35) and the fourth cutting tool (36) are moved along the fourth support (32) such that the third cutting tool (35) makes a third cutting line (38) in the first lateral section (14) between the first lateral edge (2a) of the cardboard sheet (2) and the first scribe line (11), the third cutting line being transverse to the forward direction (D) and intersecting the first scribe line (11) at the seventh intersection (P7), and the fourth cutting tool (36) makes a fourth cutting line (39) in the second lateral section (15) between the second lateral edge (2b) of the cardboard sheet (2) and the second scribe line (12), the fourth cutting line being transverse to the forward direction (D) and intersecting the second scribe line (12) at the eighth intersection (P8).

5. The method according to claim 4, wherein: The third cutting tool (35) and the fourth cutting tool (36) are rotatable relative to the relative rotation axis (X3, X4), which is transverse to the fourth support (32). Based on the detected and stored size values, the method includes the following steps: During the movement of the fourth support (32) relative to the cardboard sheet (2) along the fourth direction (D4), the third cutting tool (35) is rotated about the relative rotation axis (X3) so as to be oriented to realize a fifth cutting line (40) between the seventh intersection (P7) and the third lateral edge (2c) of the cardboard sheet (2) transverse to the forward direction (D), and then the portion of the cardboard sheet (2) including the third cutting line (38) and the fifth cutting line (40) is removed. During the movement of the fourth support (32) relative to the cardboard sheet (2) along the fourth direction (D4), the fourth cutting tool (36) is rotated about the relative rotation axis (X4) so ​​as to be oriented to realize the sixth cutting line (41) between the eighth intersection (P8) and the third lateral edge (2c) of the cardboard sheet (2) transverse to the forward direction (D), and then the portion of the cardboard sheet (2) included between the fourth cutting line (39) and the sixth cutting line (41) is removed.

6. A machine (61) for performing the method of preparing a packing blank (1) from a cardboard sheet (2) according to any one of claims 1-5, comprising: Conveyor (23), which is used to supply cardboard sheets (2) for packaging in the direction of travel (D); A detection device (24) is used to detect the dimensions of one or more items (3) to be packed; The marking device (4) includes: A first support member (5) is arranged transversely to the forward direction (D) and is movable along a first direction (D1) parallel to the forward direction (D). The first support member carries a first marking tool (6) and a second marking tool (7), which are movable toward and away from each other along the first support member (5). The second support (8) is arranged transversely to the forward direction (D) and is movable along a second direction (D2) parallel to the forward direction (D). The second support carries a third marking tool (9) and a fourth marking tool (10), which are movable toward and away from each other along the second support (8). The control unit (22) is configured to store the dimensions of one or more items (3) to be packed and to move the marking device (4) based on the detected and stored dimension values.

7. The machine according to claim 6, wherein: The first support member (5) is positioned upstream relative to the direction of travel (D); The second support member (8) is arranged downstream relative to the forward direction (D).

8. The machine according to any one of claims 6 to 7, wherein: The marking device (4) includes: a third support (25) which is arranged laterally relative to the forward direction (D) and is movable along a third direction (D3) parallel to the forward direction (D), and the third support carries a fifth marking tool (26) and a sixth marking tool (27) which are movable toward and away from each other along the third support (25), and the third support carries a first cutting tool (28) and a second cutting tool (29) which are movable toward and away from each other along the third support (25).

9. The machine according to claim 8, wherein: The marking device (4) includes: a fourth support (32) arranged transversely to the forward direction (D) and movable along a fourth direction (D4) parallel to the forward direction (D); the fourth support carries a seventh marking tool (33) and an eighth marking tool (34) which are movable toward and away from each other along the fourth support (32); and the fourth support carries a third cutting tool (35) and a fourth cutting tool (36) which are movable toward and away from each other along the fourth support (32).

10. The machine according to claim 9, wherein: The third cutting tool (35) and the fourth cutting tool (36) are rotatable relative to the relative rotation axis (X3, X4), which is transverse to the fourth support (32).

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