EP3572220A1 - Zuschnittfaltmaschine mit motorgetriebenen unteren anschlägen - Google Patents

Zuschnittfaltmaschine mit motorgetriebenen unteren anschlägen Download PDF

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Publication number
EP3572220A1
EP3572220A1 EP19176144.4A EP19176144A EP3572220A1 EP 3572220 A1 EP3572220 A1 EP 3572220A1 EP 19176144 A EP19176144 A EP 19176144A EP 3572220 A1 EP3572220 A1 EP 3572220A1
Authority
EP
European Patent Office
Prior art keywords
piston
cavity
stops
lower stops
machine according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19176144.4A
Other languages
English (en)
French (fr)
Other versions
EP3572220B1 (de
Inventor
Yannick Layer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mibox
Original Assignee
Mibox
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Filing date
Publication date
Application filed by Mibox filed Critical Mibox
Priority to PL19176144T priority Critical patent/PL3572220T3/pl
Publication of EP3572220A1 publication Critical patent/EP3572220A1/de
Application granted granted Critical
Publication of EP3572220B1 publication Critical patent/EP3572220B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B31B50/26—Folding sheets, blanks or webs
    • B31B50/44—Folding sheets, blanks or webs by plungers moving through folding dies
    • B31B50/46—Folding sheets, blanks or webs by plungers moving through folding dies and interconnecting side walls
    • 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
    • B31B2100/0024—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 having all side walls attached to the bottom
    • 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

Definitions

  • the field of the invention is that of devices and methods for producing containers by folding paper blanks, cardboard, corrugated cardboard, plastic or similar material in a folding machine and optionally gluing.
  • containers comprising at least one bottom, four sides, and possibly reinforcements of angles between their consecutive sides.
  • Such containers are conventionally manufactured from a cutout having the appropriate lines and fold slots forming flaps of sides, bottom and optionally reinforcement.
  • folding machines comprising a shaping cavity inside which is driven in translation a piston between several levels.
  • a conveyor allows to bring one by one the cuts at the upper level of the cavity. Then, the piston is moved in translation to the second level delimited by lower stops.
  • the piston moves the cut and causes it to slide inside the cavity against lateral guides that fold down the side flaps of the cutout so as to form the sides of the container up to that the bottom of the cutter bears against lower stops.
  • the folding machine may also comprise means for gluing the areas of the cut-out to be glued to keep the container in shape.
  • the container thus formed is then removed from the cavity by bringing the piston to the first level and then moving the lower stops away from the cavity so that the container is removed from the cavity under the effect of gravity and / or by means of an ejector provided for this purpose.
  • the position of the lower stops in the cavity defines the second level, the setting of which defines the depth of the shaped container.
  • the lower stops are movably mounted in translation along a groove and are held in position by means of screws.
  • a change in container height therefore assumes that an operator loosens each stop, moves it along its groove to the desired position, then presses the stop to lock it in position.
  • Such an adjustment system has the advantage of being simple from a mechanical point of view.
  • the invention particularly aims to provide an effective solution to at least some of these different problems.
  • an object of the invention is to provide a container folding machine whose adjustment of the lower stops is optimized.
  • the object of the invention is, according to at least one embodiment, to provide such a machine which makes it easier for the operator who is responsible for it to adjust the position of the lower stops.
  • Another object of the invention is, according to at least one embodiment, to provide such a machine which makes reliable the adjustment of the lower stops, in particular to ensure that all the lower stops are set at the same level.
  • Another object of the invention is, according to at least one embodiment, to provide such a technique that is effective and / or robust and / or cheap.
  • said drive means of said piston are configured to move said lower stops along said shaping cavity to define said second level.
  • the adjustment of the position of the lower stops is no longer performed manually by an operator but is instead mechanized, in other words motorized.
  • the lower stops are indeed moved by means of the piston drive means to define the second level.
  • the invention thus simplifies the work of the operators while making the adjustment of the lower stops more reliable by ensuring that they are all at the same level after the setting.
  • a folding machine comprises means for translational connection of said lower stops with said piston along the axis of displacement of said piston.
  • said lower stops are movable with respect to said piston between at least one release position in which said translation linkage means are in a release state in which said lower stops are not linked in translation with said piston, and a setting position in which said translation link means is in a driving state in which said lower stops are translationally connected with said piston.
  • said piston comprises adjustment housings adapted to receive said lower stops, said lower stops being movable relative to said piston between at least one release position in which they do not cooperate with said adjustment housing and a position of adjusting in which they cooperate with said adjustment housing so that a displacement of said piston in said cavity by said drive means is accompanied by a displacement of said lower stops to define said second level.
  • a folding machine comprises drive means in movement of said stops from one to the other of their release and adjustment positions.
  • said drive means in motion of said stops from one to the other of their positions of release and adjustment and said drive means of said lower stops between said holding position and said ejection position are merged.
  • a folding machine comprises means for locking in position of said lower stops along said axis of displacement, said blocking means being able to assume a blocking state and an unlocking state, said unlocking state being taken when said connecting means are in said driving state.
  • a folding machine comprises means for holding said stops in position along said axis of displacement when said locking means are in said unlocking state and said means for translational connection of said lower stops with said piston are in said release state.
  • said means for blocking each of said lower stops comprises a rack along which the corresponding lower stop is mounted to move in translation to define said second level, each stop comprising at least one blocking tooth adapted to cooperate with said corresponding rack in said blocking state.
  • the rack locking is relatively simple to implement and is particularly effective and safe.
  • said locking means of each of said lower stops comprise a dovetail-type system comprising a male element and a female element, one of which is integral with the corresponding lower stop, said male element and said female element. being able to slide one into the other in said unlocking state and to get caught in each other in said blocking state.
  • This solution is also relatively simple to implement and is particularly effective and safe.
  • said locking means of each of said lower stops comprises an eccentric system comprising a male element and a female element, one of which is integral with the corresponding lower stop, said male element and said female element being able to slide one in the other in said unlocking state and to get stuck in each other in said blocking state.
  • This solution is also relatively simple to implement and is particularly effective and safe.
  • said locking means of each of said lower stops comprise a friction element, integral with the corresponding lower abutment, and a friction surface, said friction element being able to slide with respect to said friction surface in said unblocking state and being held in abutment against said friction surface in said blocking state.
  • each lower stop is movably mounted in a locking-unlocking movement of said locking means, said piston acting on the lower stops to move them and thus place said locking means in their unlocking state when said means of driving said stops move it towards said piston.
  • said lower stops are movably mounted according to said locking-unlocking movement against the effect of return means.
  • the blocking-unlocking movement of said lower stops and of the linear and / or rotary type is provided.
  • the movement of said lower stops between their setting and release position is of linear and / or rotary type. 5 .
  • such a folding machine 1 comprises a frame 10 delimiting a shaping cavity 11 inside which a piston 12 can be driven in translation between a first and a second level via drive means.
  • the first level N1 is a higher level and the second level N2 is a lower level. These levels could be reversed. It could alternatively be shifted laterally rather than vertically or otherwise.
  • the piston 12 is connected to a rod 120 sliding in a groove 121 defining the axis of translation of the piston.
  • the movement from one level to the other is obtained by means of an actuator such as for example a jack connected to the rod 120 or a motor driving a pinion meshing with a rack integral with the rod 120 or any other suitable drive means.
  • the piston 12 here has a substantially parallelepipedal peripheral contour. Its shape could be different. It corresponds to that of the container that one wishes to form.
  • the folding machine comprises means of one-to-one routing of blanks 24 at the level of the first level N1 of the cavity 11.
  • Such conveying means comprise, for example, a conveyor 13, for example of the conveyor belt, roller or other type.
  • the conveyor and the piston may include a manipulator robot capable of bringing one by one the cut at the first level and move the cut along the cavity to shape them.
  • the cavity 11 houses, between the first N1 and the second N2 levels, shaping guides 14. These guides are known to those skilled in the art. They include plates along which the piston causes the cut to slide to fold the flaps aside and thus form the sides of the container as it moves between the first and second levels of the cavity.
  • the cavity 11 houses lower stops 15 whose position defines the second level N2.
  • bottom stops are in this embodiment four in number, one being positioned essentially at each corner of the bottom of the container to be formed. Their position and number could be different (higher or lower).
  • the folding machine comprises means for mechanically adjusting the position of the lower stops in the cavity to define the second level.
  • each lower abutment 15 is mounted to move in translation along a linear guide beam 16 along an axis substantially parallel to the axis of translation of the piston 12 in the cavity 11.
  • each lower abutment 15 is secured to a carriage 17 mounted to move in translation along the linear guide beam 16. It is rotatably mounted on this carriage by means of a pivot connection 150 of substantially orthogonal axis to the axis of translation of the trolley, against the effect of means of return, for example of elastic return here comprising traction springs 18. It could alternatively be an elastomer spring or any other type of suitable springs. It could also be a cylinder or any other type of actuator adapted.
  • Each lower abutment 15 carries a locking tooth 19 capable of meshing with a rack 20 integral with the linear guide beam 16 which extends along the axis of this beam.
  • This tooth-rack system constitutes means for locking the lower stops in position along their adjustment axis, i.e. axis of displacement along the linear guide beam.
  • This system can take a release state in which the teeth do not cooperate with the racks so that the lower stops are movable in translation along the linear guide beams, and a locking state in which the teeth cooperate with the racks if although the lower stops are locked in position and can no longer move along the linear guide rods.
  • each linear guide beam 16 is connected at each of its ends to a high link 21 and low 22 by means of a pivot connection 210, 220 axes parallel to each other and substantially orthogonal to the axis of translation of the piston.
  • the other end of the lower link 22 is connected to the chassis 10 by means of a pivot connection 221 of axis substantially parallel to the axis of the pivot link 220.
  • the other end of the upper link 21 is connected by means of a pivot link 211 of axis substantially parallel to the axis of the pivot connection 210 to the rod of a cylinder 23.
  • the body of the cylinder 23 is connected to the chassis by means of a pivot connection 230 of axis substantially parallel to the axis of the pivot connection 211.
  • the upper link 21 is connected between its two ends to the chassis 10 by means of a pivot link 212 of axis substantially parallel to the axis of the pivot connection 210.
  • the high and low links 22 form with the linear guide rod 16 a deformable parallelogram which can be deformed by means of the jack 23.
  • the piston comprises for each lower stop a drive housing 122 adapted to house a lower stopper 15.
  • the lower stops 15 are movable relative to the piston 12 between at least one release position in which they do not cooperate with the adjustment housing and a setting position in which they cooperate with the adjustment housing so that a displacement of piston in the cavity by the drive means of the piston is accompanied by a displacement of the lower stops to define the second level.
  • the means for adjusting the lower stops thus comprise means of translation in translation of the lower stops with the piston along the axis of movement of the piston in the cavity.
  • the translational linking means may assume a release state in which the lower stops are not linked in translation with the piston (the lower stops do not cooperate with the drive housings) and a driving state in which the stops lower are linked in translation with the piston (the lower stops cooperate with the drive housing).
  • the folding machine comprises movement means for moving the lower stops from one to the other of their release and adjustment positions.
  • These drive means comprise cylinders 23 and deformable parallelograms.
  • the machine comprises a control unit for classically controlling all the movements of the different mobile devices.
  • a control unit comprises for example conventionally a central unit and a man-machine interface.
  • the lower stops are held by the return means in a position in which the teeth are engaged with the rack so that the locking means of the lower stops are in their blocking state preventing the displacement of the stops along the linear guide beams.
  • the cylinders 23 are actuated in order to bring the lower stops 15 closer to the side walls of the piston 12.
  • the lower abutments 15 progressively come into contact with the piston, which causes them to pivot relative to the linear guide beams 16 around the axis of the pivot links 150 in a locking-unlocking movement, and the disengagement of the locking teeth from the racks setting thus the locking means in their unlocking state (cf. figure 4 ).
  • the machine may comprise means for holding the lower stops in position along the axis of displacement. of the piston when the locking means are in their unlocked state and that the means of translation in translation of the lower stops with the piston are in their released state.
  • These holding means here comprise, for each lower stop, a plate 171 provided to bear against a lateral surface 160 against the effect of a compression spring in the force can be calibrated by means of a set screw 173 (cf. figure 4 The piston is then moved in translation inside the cavity until its adjustment seats 122 are aligned with the lower stops 15.
  • a roller 151 is rotatably mounted at the end of each lower stop. These rollers make it easier to move the piston against the lower stops. These rollers could be replaced by friction zones with a low coefficient of friction.
  • the depth of the adjustment housing 122 is chosen so that when the lower stops 15 are accommodated therein, the means for locking the lower stops in their position are in their unlocking state, the locking teeth 19 not cooperating with the racks 20.
  • the locking means of the lower stops 15 are therefore in their unlocked state when the means of translation in translation of the stops 15 with the piston 12 are in their training state.
  • the piston and the lower stops are then linked in translation along the axis of movement of the piston in the shaping cavity.
  • the piston is then translated, via its drive means, inside the forming cavity to or from the first level according to whether it is desired to raise or lower the lower stops.
  • the force printed by the drive means of the piston is of course greater than the friction force of the holding means, in this case the plates 171 against the surfaces 161 of the linear guide beam 16.
  • the cylinders 23 are actuated to separate the lower stops of the side walls of the piston and thus dislodge the adjustment housing 122.
  • the lower stops 15 pivot about the axis of the pivot links 150 in a locking-unlocking movement under the effect of the return means 18 so that the locking means return to their blocking state in which the locking teeth 19 cooperate with the racks 20 to maintain in position the lower stops 15 along the linear guide beams 16.
  • the lower stops 15 are then at the desired height but offset laterally outside the forming cavity in their ejection position (cf. figure 7 ).
  • the piston 12 is raised via its drive means above the first level to disengage it from the shaping cavity.
  • the cylinders 23 are actuated to laterally offset the lower stops within the forming cavity without changing their height to bring them into their holding position in which they can ensure their function as lower stops.
  • the conveyor is used to bring a cut to the first level.
  • the drive means of the piston are used to move the piston towards the second level.
  • the piston 12 drives the cutout 24 into the forming cavity 24 into contact with the shaping guides 14.
  • the side flaps of the cut-out are then progressively folded to form the sides of the containing until the bottom flap bear against the lower stops.
  • the container is then formed.
  • the piston 12 is raised via its drive means to the first level and then the cylinders 23 are actuated to move the lower stops laterally out of the shaping cavity until they are placed in their ejection position in which it does not move. hold the container in the cavity, it can be ejected under the effect of gravity and / or by means of an ejector.
  • the linear guide beams 16 are not connected to the frame by deformable parallelograms. They are connected by slide links 80 of axes substantially orthogonal to the axis of translation of the piston in the forming cavity. They can be brought closer to or away from the piston by means of jacks 23.
  • the lower stops 15 are movably mounted in translation relative to the linear guide beams 16 by means of slide links 81 of axes substantially orthogonal to the axis of translation of the piston in the forming cavity. They are also movably mounted in translation along the guide beams 16 as in the previous embodiment by slide links 82.
  • linear guide beams 16 carry racks 20 and the lower stops 15 bear locking teeth 19.
  • each linear guide beam 16 is rotatably mounted along an axis 90 substantially parallel to the axis of movement 91 of the piston.
  • a single beam and a single lower stop are shown in this figure.
  • a machine according to the invention may further comprise means for classically gluing the flaps of the blanks in the areas to be optionally glued to keep the container in shape.
  • These means may for example comprise pumps and glue injection nozzles.
  • the machine according to the invention is a folder-gluer machine.
  • the stops could carry lugs provided to cooperate with complementary shaped housing formed in the piston.
  • the position of the housings and lugs could be reversed.
  • the connection in translation of the lower stops and the piston can for example be obtained by the implementation of male element (s) integral (s) of the lower stops, or the piston, provided ( s) to cooperate with one or more integral female elements (s) of the piston, or lower stops. Any other suitable connection means can of course be implemented.
  • the locking elements could comprise an eccentric secured to each lower abutment coming to lock in a groove of the corresponding beam during the pivoting of the abutment relative thereto.
  • the locking elements could comprise a dovetail system comprising a male element and a female element, one of which is integral with the corresponding lower abutment and the other of the chassis, in particular of the guide beam, male element and the female element being able to slide one into the other in the unlocked state and to get stuck in each other during the displacement of the stops towards the piston in the blocking state.
  • the locking elements could comprise a friction element, integral with the corresponding lower stop, and a friction surface on the frame including the corresponding beam, the friction element being able to slide relative to the surface friction in the unlocked state and being held in abutment against the friction surface during displacement of the stops towards the piston in the blocking state.

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EP19176144.4A 2018-05-24 2019-05-23 Zuschnittfaltmaschine mit motorgetriebenen unteren anschlägen Active EP3572220B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL19176144T PL3572220T3 (pl) 2018-05-24 2019-05-23 Maszyna do składania wykrojów z zmotoryzowanymi dolnymi ogranicznikami

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1854413A FR3081373B1 (fr) 2018-05-24 2018-05-24 Machine de pliage de decoupe a butees inferieures motorisees

Publications (2)

Publication Number Publication Date
EP3572220A1 true EP3572220A1 (de) 2019-11-27
EP3572220B1 EP3572220B1 (de) 2020-09-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19176144.4A Active EP3572220B1 (de) 2018-05-24 2019-05-23 Zuschnittfaltmaschine mit motorgetriebenen unteren anschlägen

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EP (1) EP3572220B1 (de)
ES (1) ES2841024T3 (de)
FR (1) FR3081373B1 (de)
PL (1) PL3572220T3 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111216407A (zh) * 2020-03-09 2020-06-02 成都精机自动化技术有限公司 一种纸盒自动包边成型设备

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3357700A (en) * 1963-06-21 1967-12-12 Fmc Corp Blank feeder with adjustable stack holder
FR2694266A1 (fr) * 1992-07-16 1994-02-04 Boix Maquinaria Sa Améliorations apportées aux moules pour la mise en forme de boîtes en carton.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3357700A (en) * 1963-06-21 1967-12-12 Fmc Corp Blank feeder with adjustable stack holder
FR2694266A1 (fr) * 1992-07-16 1994-02-04 Boix Maquinaria Sa Améliorations apportées aux moules pour la mise en forme de boîtes en carton.

Also Published As

Publication number Publication date
EP3572220B1 (de) 2020-09-23
PL3572220T3 (pl) 2021-04-19
FR3081373B1 (fr) 2020-07-03
ES2841024T3 (es) 2021-07-07
FR3081373A1 (fr) 2019-11-29

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