EP2750874B1 - Vorrichtung zur behandlung eines plattenförmigen elements, behandlungseinheit und maschine zum herstellen von verpackungen - Google Patents

Vorrichtung zur behandlung eines plattenförmigen elements, behandlungseinheit und maschine zum herstellen von verpackungen Download PDF

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Publication number
EP2750874B1
EP2750874B1 EP12751454.5A EP12751454A EP2750874B1 EP 2750874 B1 EP2750874 B1 EP 2750874B1 EP 12751454 A EP12751454 A EP 12751454A EP 2750874 B1 EP2750874 B1 EP 2750874B1
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EP
European Patent Office
Prior art keywords
speed
hub
phase
tools
rotation
Prior art date
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Active
Application number
EP12751454.5A
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English (en)
French (fr)
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EP2750874A1 (de
Inventor
Thomas LOOTVOET
Olivier BOUDRY
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Bobst Lyon SAS
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Bobst Lyon SAS
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/02—Feeding or positioning sheets, blanks or webs
    • B31B50/04—Feeding sheets or blanks
    • B31B50/042—Feeding sheets or blanks using rolls, belts or chains
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/20—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/02—Feeding or positioning sheets, blanks or webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/25—Surface scoring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/59—Shaping sheet material under pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2100/00—Rigid or semi-rigid containers made by folding single-piece sheets, blanks or webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2100/00—Rigid or semi-rigid containers made by folding single-piece sheets, blanks or webs
    • B31B2100/002—Rigid or semi-rigid containers made by folding single-piece sheets, blanks or webs characterised by the shape of the blank from which they are formed
    • B31B2100/0022—Rigid or semi-rigid containers made by folding single-piece sheets, blanks or webs characterised by the shape of the blank from which they are formed made from tubular webs or blanks, including by tube or bottom forming operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2110/00—Shape of rigid or semi-rigid containers
    • B31B2110/30—Shape of rigid or semi-rigid containers having a polygonal cross section
    • B31B2110/35—Shape of rigid or semi-rigid containers having a polygonal cross section rectangular, e.g. square
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/14—Cutting, e.g. perforating, punching, slitting or trimming
    • B31B50/146—Cutting, e.g. perforating, punching, slitting or trimming using tools mounted on a drum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/14—Cutting, e.g. perforating, punching, slitting or trimming
    • B31B50/20—Cutting sheets or blanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/14—Cutting, e.g. perforating, punching, slitting or trimming
    • B31B50/20—Cutting sheets or blanks
    • B31B50/22—Notching; Trimming edges of flaps

Definitions

  • the present invention relates to a device for processing a plate member in a packaging manufacturing machine.
  • the invention relates to a unit for processing plate elements comprising such a processing device.
  • the invention also relates to a machine for manufacturing packages from plate elements comprising a processing unit equipped with such a processing device.
  • a packaging manufacturing machine is commonly used to make boxes or boxes made of cardboard, for example corrugated cardboard.
  • Plate elements in the form of cardboard sheets are successively introduced into the machine, advance continuously in the driving direction. They are automatically printed by flexography, cut and repressed, folded and assembled by gluing, so as to form the crates.
  • transverse machines for example those described in the document WO-02 / 02.305 the cuts or folds, at least for the majority, are practiced transversely to the direction of advance of the sheets in the machine.
  • the various cutting and crushing tools are carried by beams which are arranged transversely to the direction of travel of the sheets and which can be moved vertically between a working position and a retracted position.
  • Various tools can be mounted on the beams, making it possible to manufacture a variety of packaging.
  • the longitudinal machine thus comprises a processing unit equipped with a processing tool, known by the name of slotter.
  • the unit of processing is between a printing unit and a folding-gluing unit.
  • the tooling processes the already printed plate element and transforms it into a cutout ready to be folded and glued.
  • the processing tool is formed with laterally spaced rotary blade cutters arranged to create the slits at and from the front and rear edges of the plate member.
  • the processing tool is also formed with laterally spaced rotatable pressing tools and arranged to create the fold lines on the plate member. These tools are carried by several transverse carrier shafts each being rotated by shaft motors. These tools each cooperate with a counter-tool placed on a parallel transverse support shaft, the plate elements running between the tools and the counter-tools.
  • Drive means drives the plate members at a drive speed also referred to as the operating speed, which is substantially constant between the input and the output of the machine.
  • the machine comprises a control unit adapted to control the shaft motors, so that, for the treatment of this plate element, the tool is in contact with a predetermined region of the plate element and is animated. a processing speed whose tangential component is equal to the drive speed.
  • Such machines achieve high production rates, for example of the order of twenty thousand cases per hour.
  • the plate element comprises indeed a side gluing tab cut and forming an extension of the four central panels forming the four sides of the body. After folding, this tab is glued to the opposite panel, which serves to close the body.
  • the tab must be cut in the processing unit, with a first slit from the rear edge, a second slit from the front edge, and two cross sections front and rear from the side edge.
  • the document EP 1,247,625 discloses a device mounted in a slitting machine for producing packaging boxes.
  • the device is used to cut a tab in a plate element.
  • the device comprises two upper transverse shafts parallel to each other.
  • At the end of each tree is mounted a cutting blade.
  • the blades are oriented transversely inclined, so as to ensure the desired cut bias.
  • the upstream blade cuts the back of the leg and the downstream blade cuts the front of the leg.
  • the front and rear cut is simultaneous, the blades being parallel to each other at the time of cutting.
  • Each of the two blades has a counter-tool in the form of a cylinder covered with rubber.
  • the two counter-tools are mounted on two transverse lower shafts parallel to each other.
  • the plate member is driven, passes between the blades and the counter-tool and the tab is cut.
  • the two shafts of the two blades and the two shafts of the two counter-tools are rotated by a single motor and a toothed belt.
  • the length of the tab is always defined by the spacing between the two blades and thus between the two bearing shafts.
  • the change of body format and thus leg dimensions requires complete disassembly and reassembly of the device with the new position of the shafts and the cutting blades. This stop of the machine for a change of work considerably decreases the overall productivity.
  • the simultaneous driving of the two blades and the two counter-tools leads to significant inertia, which limits the operating speed of the device and the box making machine.
  • the device cuts a glue tab in a plate member adapted to subsequently form a body.
  • the device comprises a pair of trees arranged one above the other, the element moving between the two trees.
  • the trees each have a pair of knives mounted at their proximal end. The two knives are mounted in opposition to 180 ° each other on the same tree.
  • the two shafts are driven synchronously, so that the two knives cooperate with each other to perform shear cutting.
  • One of the two knives of the upper shaft notches the upper face of the element and one of the two knives of the lower shaft simultaneously notches the underside of the element.
  • a complete rotation of the two shafts allows for both front and rear cuts.
  • a front edge sensor of the cutout and a regulator make it possible to control the timing for partial rotations, from a neutral position with the knives horizontally to a cutting position with the knives vertically, and so on. doing quarter turn every time.
  • the length of the tab is always defined by the developed length of the half-perimeter existing between the two blades of the same tree.
  • the change of body format and thus leg dimensions requires a complete disassembly and reassembly of the device with a new shaft or a new hub to increase the perimeter. This important downtime to change jobs is expensive because during this time, the entire production of the machine is stopped.
  • a main object of the present invention is to develop a device for processing a plate member in a packaging manufacturing machine.
  • a second objective is to provide a device provided with two processing tools, each of the two tools successively processing the plate element.
  • a third objective is to provide a device that makes it possible to treat plate elements of all sizes and in particular to produce gluing tabs.
  • a fourth objective is to solve the technical problems mentioned for the documents of the state of the art.
  • a fifth objective is to place a processing device in a plate unit. Yet another objective is to succeed in mounting a processing unit equipped with such a processing device in a packaging manufacturing machine.
  • the device makes it possible to treat plate elements with different dimensions.
  • the acceleration of the device hub and thus the processing tools is adjusted according to the desired dimensions between the two processing zones of the plate element.
  • the hub with its two tools accelerates then decelerates to arrive at the running speed of the plate element which is the speed of operation of the machine. This speed is optimal and is the one at which each of the two tools processes the element in plate.
  • the rotational speed has a first phase at constant speed, substantially equal to the speed of the plate member, and during which the first tool performs a first treatment of the plate member.
  • the rotational speed has a second phase at constant speed, substantially equal to the speed of the plate member, and during which the second tool performs a second treatment of the plate member.
  • the rotational speed varies between the first phase at constant speed and the second phase at constant speed in the same cycle of rotation of the tools, and / or between the second phase at constant speed in a first cycle of rotation of the tools and the first phase. at a constant speed in a second cycle of tools rotation following the first cycle.
  • This variation in speed of the carrier hub of the two tools firstly makes it possible to position the first tool exactly at its desired position in order to carry out the first treatment of the plate element, then to position the second element exactly. tool for performing the second treatment of the plate element.
  • the acceleration or deceleration of the carrier hub of the two tools makes it possible to catch up respectively the delay or the advance taken by each of the two tools with respect to the constant speed of movement of the element.
  • the adjustment of the different speeds makes it possible to synchronize the arrival of the plate element with the treatment by the first tool then the treatment by the second tool, which allows the adjustment of the distance between the two treatments on the element.
  • the device makes it possible to obtain high rates of treatment of the elements.
  • the processing device Due to the position of the device at a lateral side of a packaging manufacturing machine, the processing is only at one end of the element. It is useless to have an adjustment of the spacing between the two tools.
  • the adaptation to the format of the elements to be processed is done by adjusting the speed parameters.
  • the parameters and the speed phases give the spacing between the two processing positions on the element.
  • the processing device is independent of the training of the elements to be processed.
  • a unit for processing plate elements comprises a device for processing a plate member having one or more of the technical features described and claimed below, mounted at the level of a lateral side of a crushing section.
  • a machine for manufacturing packages from plate elements comprises a unit for processing plate elements having one or more of the technical characteristics described and claimed herein. below, interposed between a printing unit and a folding-gluing unit.
  • the machine and thus the unit are of longitudinal type.
  • the longitudinal direction is defined by referring to the direction of travel or driving of the plate elements in the machine, in the processing unit and in the device, according to their median longitudinal axis.
  • the transverse direction is defined as the direction perpendicular to the running direction of the plate elements.
  • the upstream and downstream positions of the machine and the unit are defined with respect to the longitudinal direction and the running direction of the element from the feeder at the machine inlet to the machine output.
  • the front and rear positions on the element are defined with respect to the longitudinal direction and the direction of movement of the element.
  • the proximal and distal positions of the element are defined relative to the driver's side and to the opposite conductive side of the machine during the scrolling of the element.
  • a carton blank 1, such as that illustrated in Figure 1 is intended to form a box.
  • the cutout 1 is formed of four adjacent portions 2, 3, 4 and 5 extending between two opposite lateral edges parallel to the direction of travel (arrow T in the Figures 1 to 8 ) of the blank 1 in the machine.
  • the blank 1 is bent so that the distal end portion 2 and the proximal end portion 5 adjacent the two opposite edges of the blank 1 are placed on the two central portions 3 and 4.
  • the four panels 9, 11, 12 and 13 are intended to form the four side walls of the box. Each of the four panels 9, 11, 12 and 13 is adjacent to two rear and front flaps, respectively 14 and 16, 17 and 18, 19 and 21, 22 and 23.
  • the flaps 14, 16, 17, 18, 19, 21 , 22 and 23 are intended to close the upper and lower faces of this body.
  • a cut edge 24 forms the distal edge of the distal end portion 2 and thus the distal panel 9 of the cut.
  • Rear longitudinal parallel slits 25 are cut from the rear transverse edge of the blank 1 and separate the flaps 14, 17, 19 and 22 adjacent to the rear fold line 7.
  • Front longitudinal parallel slits 26 are cut from the edge transversal before the 1 and separate the flaps 16, 18, 21 and 23 adjacent to the front fold line 8.
  • the distal end panel 9 is glued to the proximal end panel 13.
  • the proximal end panel 13 has a tab or glue tab 27 that protrudes from the side edge proximal of the cut-out 1.
  • the distal end panel 9 is bent after the proximal end panel 13, so that the tab 27 is covered by the distal end panel 9.
  • the tab 27 is folded and its underside is coated with glue.
  • the two end panels 9 and 13 of the blank 1 are fixed to each other, after folding of these end panels 9 and 13 one on the other, and gluing of the tab 27 on the distal end panel 9 thus joining the four side walls 9, 11, 12 and 13 of the body.
  • the tab 27 is obtained by being isolated by cutting the remainder of the blank 1.
  • the rear proximal slit 25 is cut from the rear transverse edge of the blank 1 being parallel to the rear slots 25.
  • a rear cut 31 is made substantially obliquely from the proximal longitudinal edge to the end of the proximal proximal slit 25.
  • the proximal proximal slit 26 is cut from the transverse front edge of the cutout 1 parallel to the front slits 26.
  • a front cut 32 is made substantially obliquely from the proximal longitudinal edge to the proximal proximal slit 26.
  • a plate member such as corrugated cardboard sheets 35 is printed and cut to obtain the blank 1.
  • the blank 1 is then folded and glued to obtain a box.
  • a longitudinal type packaging manufacturing machine 33 preferably comprises a feeder (not shown) for the sheets 35.
  • a printing unit, for example by flexography (not shown) is mounted downstream as a result of feeder.
  • a sheet cutting unit 35 (not shown) for obtaining special shapes or handles is mounted downstream following the printing unit.
  • a processing unit 34 of the sheets 35 or slotter is mounted downstream as a result of the cutting unit.
  • a folding-gluing unit of the blanks 1 (not shown) is mounted downstream as a result of the processing unit 34.
  • a machine output for the boxes (not shown) is mounted downstream as a result of the unit. folding-gluing.
  • the processing unit 34 processes the printed sheets 35 coming out of the printing unit and converts them into blanks 1.
  • the processing unit 34 is provided with various tools which include cutting tools or knives which form the cutting cup. bank 24, the slits 25 and 26, and the sections 31 and 32, and tools to repress or pressers which form the longitudinal fold lines 6. It should be noted that the transverse fold lines 7 and 8 are made upstream of the processing unit 34 or are initially provided in the sheets of corrugated cardboard 35.
  • the tools are mounted on transverse support shafts driven in rotation by shaft motors.
  • the speed of rotation of the tools corresponds to the operating speed, that is to say the speed of drive and scroll T leaves 35.
  • the processing unit 34 comprises from upstream to downstream, a pre-casting section 36, with a first pair of shafts, positioned one above the other.
  • the lower shaft carries a lower pre-bender 37 and the upper shaft carries the upper counterpart 38 of the lower pre-bender 37.
  • the pre-bending section 36 provides an initial initial upset of the longitudinal fold lines 6.
  • a first splitting section 39 with a second pair of shafts positioned one above the other, is mounted downstream of the pre-blasting section 36.
  • the upper shaft of the first splitting section 39 carries a disc with its knives 41 and the lower shaft carries a lower contralame 42.
  • the first slitting section 39 ensures the cutting of the rear slits 25.
  • a push-up section 43 with a third pair of shafts positioned one above the other, is mounted downstream of the first shear section 39.
  • the lower shaft of the push-up section 43 carries a shearer 44 and the upper shaft carries an upper counterpart 46.
  • the upsetting section 43 ensures the final upsetting and thus the final marking of the longitudinal fold lines 6.
  • a second slitting section 47 with a fourth pair of shafts positioned one above the other, is mounted downstream of the upsetting section 43.
  • the upper shaft of the second slitting section 47 carries a roll provided with its knifes 48 and the lower shaft bears a lower counterpart 49.
  • the second splitting section 47 ensures the cutting of the forward slits 26.
  • the processing unit 34 comprises a processing device 51 of the sheets 35.
  • the device 51 is placed at the level of of the upset section 43. Given the proximal position of the tab 27 on the cutout 1, the device 51 is mounted at the end located on the driver's side of the upper shaft of the upset section 43.
  • the device 51 comprises a central hub 52 rotating (arrow R in the Figures 2 to 8 ) relative to an axis of rotation positioned substantially horizontally and substantially transversely 53.
  • the processing tools are mounted on the hub 52 and are each able to treat the sheet 35 in a respective processing position as the hub 52 rotates about its axis 53.
  • the hub 52 is cantilevered above the sheet 35.
  • Two arms 54 and 56 are favorably inserted on the hub 52 and deploy radially from the hub 52 (see FIG. Figure 3 ).
  • a first processing tool which is in this case a first cutting blade tool 57, is mounted at the free end of the first arm 54.
  • a second processing tool which in this case is a cutting blade tool 58 is mounted at the free end of the second arm 56.
  • the two processing tools are thus cantilevered above the sheet 35.
  • This cantilevered arrangement of the hub 52, the two arms 54 and 56 and two tools 57 and 58 lightens the device 51, which reduces the inertia and increase the performance for acceleration and deceleration of the device 51.
  • the cutting edge of the two cutting tools 57 and 58 is preferably obliquely in the horizontal plane relative to the axis 53 of the hub 52, so as to make the two slanting cuts 31 and 32 in the sheet 35. During the two successive cuts, the edge of the blade of the two cutting tools 57 and 58 is found parallel to the plane of the sheet 35.
  • the two arms and thus two tools 57 and 58 are arranged radially relative to each other at an angle ⁇ substantially less than 180 °, preferably substantially equal to 100 °.
  • the first arm 54 is extended diametrically by a third arm itself forming a counterweight 59 or provided with a counterweight 61 at its free end.
  • the second arm 56 is extended diametrically by a fourth arm forming itself counterweight 62 or provided with a counterweight 63 at its free end.
  • the hub 52 with the two arms 54 and 56 and thus the two tools 57 and 58 and the two counterweight arms 59 and 61 are rotated by means of drive means of the electric motor type mounted directly on the axis 53.
  • the processing unit 34 preferably comprises a counter-tool or counterpart 64. Given the proximal position of the tab 27 on the cutout 1 and the mounting of the device 51, the counterpart 64 is mounted at the driver-side end of the lower shaft of the upset section 43. The device 51 and the counterpart 64 are interposed between the first slitting section 39 and the second slitting section 47.
  • the counterpart 64 is a rotating cylinder (Arrow C in the Figures 2 to 8 ) with respect to a substantially horizontal axis transverse and parallel to the axis of rotation 53 of the hub 52 of the device 51.
  • the rotation speed C of the counterpart 64 is synchronized, is constant, and is substantially equivalent to the constant speed of operation, that is to say to the drive speed and scroll T sheets 35.
  • the counterpart 64 is driven separately from the hub 52.
  • the sheet 35 scrolls substantially horizontally in a plane between the two tools 57 and 58 and the counterpart 64.
  • the counterpart 64 has a coating made of a material provided with flexibility characteristics 66, such as for example a polyurethane layer.
  • the two tools 57 and 58 cut the sheet 35 and penetrate one after the other in the coating 66 of the counterpart 64, which provides a clean cut of the sheet 35 without burrs. Thanks to the polyurethane, the blades of the two tools 57 and 58 wear less and have a much lower risk of breakage.
  • the hub 52 of the device 51 rotates so that the sheet 35 is cut successively by the first tool 57 and the second tool 58 during a complete cycle of rotation.
  • the first tool 57 comes into contact with the sheet 35 (see Figure 3 ).
  • the first tool 57 makes the cut before 32 at the precise location of the tab 27 (see Figure 4 ).
  • the first tool 57 emerges from the sheet 35 once the cut before 32 has been made (see Figure 5 ).
  • the second tool 58 comes into contact with the sheet 35 (see Figure 6 ).
  • the second tool 58 makes the rear cut 31 at the precise location of the tab 27 (see Figure 7 ).
  • the second tool 58 emerges from the sheet 35 once the rear cut 31 has been made (see Figure 8 ). Then the rotation cycle continues with the following sheet 35.
  • the speed V of rotation R of the hub 52 and therefore of the device 51 varies during a rotation cycle.
  • the speed variation phases V for different embodiments of tabs 27 are represented in FIGS. Figures 9 to 14 depending on the progression of the rotation cycle.
  • the cut 31 and 32 is at constant speed.
  • the speed V firstly has a first phase at constant speed 67, substantially equal to the operating speed.
  • the first tool 57 is in its cutting position to make the front cut 32 of the sheet 35.
  • the speed V then has a second phase at constant speed 68, substantially equal to the operating speed.
  • the second tool 58 is in its cutting position to make the rear cut 31 of the sheet 35.
  • the speed V then has at least one variable speed phase.
  • each of the two tools 57 and 58 is in an intermediate position between their respective cutting position.
  • the intermediate position corresponds to the position of the device 51, at the moment when the tool 57 or 58 emerges from the sheet 35.
  • the speed V varies, the drive motor of the hub 52 and the device 51 accelerating or decelerating the rotation R to obtain the cut 31 and 32 at the desired location.
  • the drive of the hub 52 is decoupled from that of the counterpart 64, which greatly reduces the inertia and thus achieve strong acceleration and deceleration. All leg length ranges 27 between 100 mm and 700 mm can be covered. In addition, the cuts 31 and 32 can be performed at high operating speeds.
  • This or these phases can be provided between the two constant speed phases, formed by a first phase during which the first tool 57 is in the treatment position, and a second phase during which the second tool 58 is in the position of treatment of a first rotation cycle of the hub 52.
  • This or these phases can be provided between the two constant speed phases, formed by a second phase during which the second tool 58 is in the treatment position of a first cycle rotation of the hub 52, and a first phase during which the first tool 57 is in the processing position, a second cycle of rotation of the hub 52 following the first cycle.
  • the speed V of rotation R varies (see FIG. Figure 9 ) successively presenting an acceleration phase 69, and a deceleration phase 71, interposed between the two constant-speed phases 67 and 68. Then, once the rear cut 31 has been made during the second phase at a constant speed 68, the speed V of rotation R varies by successively presenting a deceleration phase 72, a phase at zero speed 73, then an acceleration phase 74, before resuming the front cut 32 of the following sheet, made during the first phase at constant speed 67 of the next cycle.
  • the rotational speed V R remains constant (see Figure 10 ) by presenting a constant-speed intermediate phase 76 interposed between the two constant-speed phases 67 and 68. Then, once the rear cut 31 has been made during the second constant-speed phase 68, the rotational speed V varies as shown by successively a deceleration phase 72, a phase at zero speed 73, then an acceleration phase 74, before resuming the front cut 32 of the following sheet, made during the first phase at constant speed 67 of the next cycle.
  • the speed V of rotation R varies (see Figure 11 ) successively presenting a deceleration phase 77, then an acceleration phase 78, interposed between the two constant speed phases 67 and 68. Then, once the rear section 31 is made during the second constant speed phase 68, the speed V of rotation R varies by successively presenting a deceleration phase 72, a phase at zero speed 73, then an acceleration phase 74, before resuming the front cut 32 of the following sheet, made during the first phase at constant speed 67 of the next cycle.
  • the speed V of rotation R varies (see Figure 12 ) successively having a deceleration phase 77, a zero speed phase 79, then an acceleration phase 78, interposed between the two constant speed phases 67 and 68. Then, once the rear cut 31 has been made during the second phase at a constant speed 68, the speed V of rotation R varies by having successively a deceleration phase 72, then an acceleration phase 74, before recommencing the front cut 32 of the following sheet, made during the first phase at constant speed 67, of the following cycle.
  • the rotation speed V varies (see FIG. Figure 13 ) successively having a deceleration phase 77, a zero speed phase 79, then an acceleration phase 78, interposed between the two constant speed phases 67 and 68. Then, once the rear cut 31 has been made during the second phase at constant speed 68, the rotational speed V R remains constant by presenting an intermediate phase at a constant speed 81, before resuming the front cut 32 of the following sheet, made during the first phase at a constant speed 67, of the following cycle.
  • the speed V of rotation R varies (see Figure 14 ) successively having a deceleration phase 77, a zero speed phase 79, then an acceleration phase 78, interposed between the two constant speed phases 67 and 68. Then, once the rear cut 31 has been made during the second phase at a constant speed 68, the rotational speed V varies by successively presenting an acceleration phase 82, then a deceleration phase 83, before restarting the front cut 32 of the following sheet, made during the first phase at constant speed 67, of the next cycle.

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Claims (13)

  1. Vorrichtung zum Bearbeiten eines Plattenelements (35) in einer Verpackungsherstellungsmaschine (33), wobei das Element (35) bei einer Betriebsdrehgeschwindigkeit läuft, umfassend
    - eine Nabe (52), die sich in Bezug auf eine im Wesentlichen horizontale und transversale Drehachse (53) dreht (R),
    - zwei Werkzeuge mit Schneidklinge (57, 58), die an der Nabe (52) befestigt sind und geeignet sind, das Element (35) in einer jeweiligen Schneidposition zu schneiden, und
    - Antriebsmittel, die geeignet sind, die Nabe (52) und die zwei Werkzeuge (57, 58) in Drehung (R) zu versetzen, und
    - ein Gegenwerkzeug (64), das sich in Bezug auf eine Drehachse dreht (C), die im Wesentlichen horizontal, transversal und zu der Drehachse (53) der Nabe (52) parallel ist, wobei das Element (35) zwischen den Werkzeugen (57, 58) und dem Gegenwerkzeug (64) angeordnet ist,
    wobei sich eine Geschwindigkeit (V) der Drehung (R) der Nabe (52) im Laufe eines Drehzyklus der Nabe (52) ändert, indem sie Folgendes aufweist
    - zwei Phasen mit konstanter Geschwindigkeit (67, 68), die im Wesentlichen gleich der Betriebsdrehgeschwindigkeit ist und während der sich jedes der zwei Werkzeuge (57, 58) in der Schneidposition befindet, um nacheinander das Element (35) zu schneiden, und
    - mindestens eine Phase mit variabler Geschwindigkeit (69, 71, 72, 74), während der sich jedes der zwei Werkzeuge (57, 58) in der Zwischenposition zwischen den jeweiligen Schneidpositionen von jedem der zwei Werkzeuge (57, 58) befindet, dadurch gekennzeichnet, dass
    sie auf einer lateralen Seite der Verpackungsherstellungsmaschine (33) befestigt ist, und
    dass die Nabe (52) und die zwei Werkzeuge (57, 58) über dem Element (35) derart freitragend sind,
    um eine vordere, seitliche, transversale Schneidposition (32) und eine hintere, seitliche, transversale Schneidposition (31) auf dem Elemente (35) zu erstellen.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass sich die Geschwindigkeit (V) der Drehung (R) der Nabe (52) ändert, indem sie nacheinander eine Beschleunigungsphase (69, 82) und eine Verzögerungsphase (71, 83) aufweist, die zwischen den zwei Phasen mit konstanter Geschwindigkeit (67, 68) eingefügt sind.
  3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass sich die Geschwindigkeit (V) der Drehung (R) der Nabe (52) ändert, indem sie eine Zwischenphase mit konstanter Geschwindigkeit (76, 81) aufweist, die zwischen den zwei Phasen mit konstanter Geschwindigkeit (67, 68) eingefügt ist.
  4. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sich die Geschwindigkeit (V) der Drehung (R) der Nabe (52) ändert, indem sie nacheinander eine Verzögerungsphase (72, 77) und eine Beschleunigungsphase (74, 78) aufweist, die zwischen den zwei Phasen mit konstanter Geschwindigkeit (67, 68) eingefügt sind.
  5. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sich die Geschwindigkeit (V) der Drehung (R) der Nabe (52) ändert, indem sie nacheinander eine Verzögerungsphase (72, 77), eine Stillstandphase (73, 79) und eine Beschleunigungsphase (74, 78) aufweist, die zwischen den zwei Phasen mit konstanter Geschwindigkeit (67, 68) eingefügt sind.
  6. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die zwei Phasen mit konstanter Geschwindigkeit aus einer ersten Phase (67), während der sich das erste Werkzeug (57) in der Schneidposition befindet, und einer zweiten Phase (68) gebildet sind, während der sich das zweite Werkzeug (58) in der Schneidposition eines ersten Drehzyklus der Nabe (52) befindet.
  7. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die zwei Phasen mit konstanter Geschwindigkeit aus einer zweiten Phase (68), während der sich das zweite Werkzeug (58) in der Schneidposition eines ersten Drehzyklus der Nabe (52) befindet, und einer ersten Phase (67) gebildet sind, während der sich das erste Werkzeug (57) in der Schneidposition eines zweiten Drehzyklus der Nabe (52) befindet, der auf den ersten Zyklus folgt.
  8. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass eine Drehgeschwindigkeit (C) des Gegenwerkzeugs (64) im Wesentlichen gleich der Betriebsdrehgeschwindigkeit ist.
  9. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die zwei Werkzeuge (57, 58) in einem Winkel (α), der im Wesentlichen kleiner als 180°, vorzugsweise im Wesentlichen gleich 100° ist, radial zueinander angeordnet sind.
  10. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die zwei Werkzeuge (57, 58) jeweils an dem Ende eines Arms (54, 56) befestigt sind, der mit der Nabe (52) fest verbunden ist, und dass jeder der zwei Arme (54, 56) diametral in einen Arm ausläuft, der Gegengewichte (59, 61, 62, 63) bildet.
  11. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Gegenwerkzeug (64) ein Zylinder ist, der eine Verkleidung (66) aus einem mit Weichheitseigenschaften vorgesehenen Material aufweist, derart, dass die zwei Werkzeuge (57, 58) darin eingreifen.
  12. Einheit zum Bearbeiten der Plattenelemente, dadurch gekennzeichnet, dass sie eine Vorrichtung (51) nach einem der vorhergehenden Ansprüche aufweist, die an einem Abschnitt zum Anstauchen (43) befestigt ist.
  13. Maschine zur Herstellung der Verpackungen aus Plattenelementen, dadurch gekennzeichnet, dass sie eine Einheit zum Bearbeiten der Plattenelemente nach Anspruch 12 aufweist, die zwischen einer Druckeinheit und einer Falt-Klebeeinheit angeordnet ist.
EP12751454.5A 2011-08-31 2012-08-24 Vorrichtung zur behandlung eines plattenförmigen elements, behandlungseinheit und maschine zum herstellen von verpackungen Active EP2750874B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1102645A FR2979328B1 (fr) 2011-08-31 2011-08-31 Dispositif pour traiter un element en plaque, unite de traitement et machine de fabrication d'emballage
PCT/EP2012/003584 WO2013029768A1 (fr) 2011-08-31 2012-08-24 Dispositif pour traiter un element en plaque, unite de traitement et machine de fabrication d'emballage

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EP2750874A1 EP2750874A1 (de) 2014-07-09
EP2750874B1 true EP2750874B1 (de) 2017-10-11

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EP (1) EP2750874B1 (de)
JP (1) JP5894671B2 (de)
KR (1) KR101653073B1 (de)
CN (1) CN103987516B (de)
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FR (1) FR2979328B1 (de)
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Also Published As

Publication number Publication date
WO2013029768A1 (fr) 2013-03-07
ES2646738T3 (es) 2017-12-15
FR2979328A1 (fr) 2013-03-01
EP2750874A1 (de) 2014-07-09
US20140206514A1 (en) 2014-07-24
US20190077107A1 (en) 2019-03-14
JP2014525357A (ja) 2014-09-29
FR2979328B1 (fr) 2014-05-16
JP5894671B2 (ja) 2016-03-30
CN103987516B (zh) 2016-08-17
KR101653073B1 (ko) 2016-08-31
TWI614125B (zh) 2018-02-11
TW201318834A (zh) 2013-05-16
US11141947B2 (en) 2021-10-12
CN103987516A (zh) 2014-08-13
KR20140069025A (ko) 2014-06-09

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