EP4353467A1 - Dispositif de pliage pour plier une ébauche de carton - Google Patents

Dispositif de pliage pour plier une ébauche de carton Download PDF

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Publication number
EP4353467A1
EP4353467A1 EP22201261.9A EP22201261A EP4353467A1 EP 4353467 A1 EP4353467 A1 EP 4353467A1 EP 22201261 A EP22201261 A EP 22201261A EP 4353467 A1 EP4353467 A1 EP 4353467A1
Authority
EP
European Patent Office
Prior art keywords
folding
folding device
die
unit
sub
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.)
Pending
Application number
EP22201261.9A
Other languages
German (de)
English (en)
Inventor
Josef Lipp
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.)
Somic Verpackungsmaschinen & Co KG GmbH
Original Assignee
Somic Verpackungsmaschinen & Co KG GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Somic Verpackungsmaschinen & Co KG GmbH filed Critical Somic Verpackungsmaschinen & Co KG GmbH
Priority to EP22201261.9A priority Critical patent/EP4353467A1/fr
Priority to US18/484,544 priority patent/US20240123701A1/en
Publication of EP4353467A1 publication Critical patent/EP4353467A1/fr
Pending legal-status Critical Current

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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
    • B31B50/262—Folding sheets, blanks or webs involving folding, leading, or trailing flaps of 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
    • B31B50/26—Folding sheets, blanks or webs
    • B31B50/44—Folding sheets, blanks or webs by plungers moving through folding dies
    • 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
    • B31B50/006—Controlling; Regulating; Measuring; Improving safety
    • 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
    • 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 invention relates to a folding device for folding a cardboard blank not belonging to the folding device, comprising a folding die unit and a folding head unit, wherein the folding die unit is designed to fold the cardboard blank around the folding head unit.
  • the folding matrix unit of known folding devices of the applicant comprises a substantially horizontal U-shaped frame on which a plurality of vertically aligned folding tools are arranged.
  • the base leg of the U-shape is attached to a vertical support of the folding device so that it can be moved up and down in the vertical direction in order to be able to be brought together with the folding head unit for folding the cardboard blank.
  • the vertical support is in turn connected in an operationally fixed manner to a machine frame of the machine, in particular a packaging machine, via a cross member.
  • the side legs of the U-shape tend to deform not only due to their own weight, but also due to the weight of the folding tools attached to them.
  • the free ends of the side legs tend to sag slightly downwards and/or to be deflected by the counterforces exerted on them by the folding head unit during folding and/or by acceleration forces. In extreme cases, this can lead to the cardboard blank being folded differently at both ends.
  • a folding device of the type mentioned at the outset in which the folding die unit comprises two folding die sub-units, each of which has a substantially U-shaped frame on which a plurality of folding tools are arranged, wherein a base leg of the U-shape of each folding die sub-unit is attached to a separate vertical support so as to be movable up and down in the height direction, and wherein the two U-shaped frames are arranged with the openings of the respective U-shapes facing each other.
  • the side legs of the U-shape can be made shorter when the cardboard blanks to be folded have identical dimensions, which significantly increases their resistance to deformations caused by gravity and/or counterforces and/or acceleration forces.
  • the folding device according to the invention results in smaller U-shaped frames than with conventional folding devices for folding cardboard blanks of identical dimensions.
  • a U-shaped frame comprises a base leg and two side legs, wherein the side legs can be arranged essentially parallel to one another on the base leg. It should also be noted that in connection with the present invention, a longitudinal direction of the folding device runs essentially parallel to the extension direction of the undeformed side legs of the U-shape and a transverse direction of the folding device runs essentially parallel to the extension direction of the base leg of the U-shape.
  • a predetermined distance can be provided between the free ends of the side legs of the two frames. This makes it possible for the side legs to have a length that is less than half the distance between the two base legs of the U-shapes of the frames. Since this distance between the two base legs has a direct influence on the longitudinal dimension of the maximum cardboard blanks that can be folded by the folding device, the stability of the side legs can be further increased.
  • This measure can also be used to adjust the format range that can be processed by the folding device. If the folding device was originally set up for cardboard blanks with a length in a range of 0 mm to 300 mm, for example, it can easily be converted to a range of 300 mm to 600 mm, for example, by moving one of the folding die sub-units on the machine frame by 300 mm, which also increases the distance between the free ends of the side legs of the two frames by these 300 mm.
  • At least one drive motor which is intended to bring about the movement of the frame of at least one of the folding die sub-units in the vertical direction, is arranged at least partially, preferably completely, within the longitudinal extension of the vertical support of the associated folding die sub-unit.
  • Drive motors can be motors with a rotating drive shaft, for example electric motors, but also fluidically, in particular pneumatically and/or hydraulically, driven rotary motors, as well as linear motors, for example electromagnetically operating linear motors, but also fluidically, in particular pneumatically and/or hydraulically, driven linear motors, for example pneumatic and/or hydraulic cylinders.
  • a further development of the invention can provide that the axis of rotation of the at least one drive motor is arranged transversely to the longitudinal direction of the folding device.
  • each of the folding matrix subunits is assigned its own transversely arranged drive motor.
  • the overall length of the folding device can be further shortened by connecting a cross member, which serves to fasten the folding die sub-unit to a machine frame not belonging to the folding device, to the vertical member to form a structural unit in at least one of the folding die sub-units.
  • the side legs of at least one folding matrix sub-unit are adjustable in the transverse direction.
  • the adjustment of the side legs can advantageously be carried out synchronously and symmetrically to a longitudinal center plane of the folding device.
  • the adjustment can also be carried out by motor, for example by electric motor.
  • At least one folding tool of at least one folding matrix sub-unit is adjustable in the longitudinal direction.
  • the adjustment can advantageously be carried out by a motor, for example an electric motor.
  • each side leg of the U-frame of the folding die sub-units carries more than one folding tool.
  • each side leg of the U-frame of the folding die sub-units carries exactly one folding tool. Should it be necessary or desired for the folding tool to engage with the cardboard blank at more than one point, this can be achieved, for example, by at least one folding tool having more than one engagement section intended for folding engagement with the cardboard blank.
  • the folding device comprises a control device which is designed to control the drive motors of the two folding matrix sub-units either synchronously and in the same direction according to a first operating mode or independently of one another according to a second operating mode.
  • the first operating mode corresponds to the normal operation of the folding device.
  • the folding of a carton can be accomplished by one of the folding die sub-units alone. In this case it is possible to make the folding device work in double cycle, ie to process two carton blanks simultaneously, namely one in each of the two folding die sub-units. This allows the capacity of the folding device to be doubled.
  • the control device is designed to control the drive motors of the two folding matrix subunits according to a first sub-operating mode of the first operating mode to generate an identical stroke amplitude of the two frames or according to a second sub-operating mode of the first operating mode to generate a different stroke amplitude of the two frames.
  • a cross member has two fastening points at each of its transverse ends, which are spaced apart from one another in the longitudinal direction and are intended for engagement with a machine frame not belonging to the folding device, with one of the fastening points being eccentric about an axis running in the transverse direction.
  • cross member can be connected to the vertical member to form a structural unit.
  • a first embodiment of a folding device is generally designated 100.
  • the folding device 100 is intended for folding a cardboard blank 102.
  • the folding device 100 comprises a Figure 3 roughly schematically indicated folding head unit 104 and a folding die unit 106 which is designed to fold the cardboard blank 102 around the folding head unit 104.
  • the folding die unit 106 comprises two folding die sub-units 108, each of which has a substantially U-shaped frame 110.
  • a plurality of folding tools 112 are arranged on the substantially U-shaped frame 110 of each folding die sub-unit 108.
  • the U-shaped frame 110 comprises a base leg 110a and two side legs 110b, wherein the side legs 110b extend from the base leg 110a substantially parallel to one another.
  • the base leg 110a of the U-shape of each folding die sub-unit 108 is attached to a vertical support 114 so as to be movable up and down in the height direction H.
  • the folding device 100 extends in a longitudinal direction L, a transverse direction Q and the height direction H, which orthogonal to each other in pairs.
  • the longitudinal direction L runs essentially parallel to the direction of extension of the undeformed side legs 110b and the transverse direction Q runs essentially parallel to the direction of extension of the base leg 110a of the U-shaped frame 110, as in Figure 2 in the top view of the folding device 100.
  • each of the two substantially U-shaped frames 110 has an opening 110c (see Figure 2 ).
  • the openings 110c of the respective U-shapes of the two frames 110 are arranged so that they face each other.
  • the free ends 110d of the side legs 110b of the frames 110 of the two folding matrix sub-units 108 also face each other.
  • the free ends 110d of the side legs 110b are arranged opposite one another, with a predetermined distance d from one another. This distance d correlates to a minimum distance that the folding tools 112 always have during operation. This makes it possible to further reduce the length of the side legs 110b.
  • the folding device 100 can also be converted to a different format range by changing the distance d.
  • at least one of the folding die sub-units 108 can be moved away from or towards the other folding die sub-unit 108 in the longitudinal direction L.
  • the folding device 100 comprises at least one drive motor 116, which is provided to bring about the movement of the frame 110 of at least one of the folding matrix sub-units 108 in the vertical direction H.
  • each of the folding matrix sub-units 108 is assigned a separate drive motor 116.
  • the drive motors 116 each have a rotation axis 116a. In the Figures 1 to 3 In the embodiment shown, the rotation axis 116a runs parallel to the longitudinal direction L of the folding device 100.
  • Figure 4 shows a folding device 200 according to a second embodiment, which essentially corresponds to the folding device 100 according to the first embodiment. Therefore, in Figure 4 The same components are designated by the same reference numerals as in the Figures 1 to 3 , but increased by 100. Furthermore, the folding device 200 will be described below only with regard to its differences from the folding device 100, to whose description express reference is otherwise made here.
  • the folding device 200 also has at least one drive motor 216, which is intended to bring about the movement of the U-shaped frame 210 of at least one folding matrix sub-unit 208 in the vertical direction H.
  • each of the folding matrix sub-units 208 is assigned a separate drive motor 216.
  • the rotation axis 216a of the drive motors 216 runs orthogonally to the longitudinal direction L of the folding device 200, in particular in the transverse direction Q. This design can also help to keep the longitudinal extension of the folding device 200 as short as possible.
  • the two drive motors 216 are arranged at least partially within the longitudinal extension of a vertical support 214 of the associated folding die sub-unit 208.
  • at least one of the drive motors 216 can be arranged completely within the longitudinal extension of the vertical support 214.
  • a cross member 118 extends in the transverse direction Q adjacent to a vertical support 114 of a folding die sub-unit 108.
  • the folding die sub-unit 108 is attached to a machine frame 120 via the cross member 118.
  • the cross member 118 can be connected to the vertical support 114 to form a structural unit 122, whereby the overall length of the folding device 100 in the longitudinal direction L can be further shortened.
  • the cross member 118 can be divided into two cross member sections 118a, which accommodate the vertical support 114 between them.
  • the two cross member sections 118a is arranged such that the vertical support 114 can be arranged in the transverse direction Q centrally between the two cross member sections 118a and thus centrally in the machine frame 120.
  • the vertical support 114 and the cross-support sections 118a can be welded together, for example. Alternatively, they can also be detachably connected to one another.
  • the structural unit 122 can comprise connecting elements 124 by means of which the vertical support 114 is connected to the cross-supports 118.
  • These connecting elements 124 can be clamping elements, for example, tensioned by screws 126, which engage in clamping grooves of the vertical support 114 and the cross-support 118.
  • Such a clamping connection makes it possible to move the vertical support 114 relative to the cross-support 118 in the vertical direction without, for example, having to drill new fastening holes.
  • the side legs 110b of at least one folding matrix sub-unit 108 are designed to be adjustable in the transverse direction Q, which in Figure 2 is indicated by a dash-dotted arrow 128 for a side leg 110b. Also in Figure 2 A dash-dotted arrow 130 indicates that at least one folding tool 112 can be arranged to be displaceable in the longitudinal direction L.
  • Both the adjustment of a side leg 110b, preferably both side legs 110b, of a U-shaped frame 110 of a folding die sub-unit 108 in the transverse direction Q and the adjustment of a folding tool 112 in the longitudinal direction L on a side leg 110b can be carried out by motor, for example by electric motor.
  • a side leg adjustment unit 132 or a folding tool adjustment unit 134 can be provided (see Figure 3 ). This makes format changes even easier.
  • each side leg 110b of the U-shaped frame 110 of the folding matrix subunits 108 of the first embodiment discussed carries exactly one folding tool 112, which can extend in the vertical direction H.
  • Each folding tool 112 can have at least one engagement section 112a, which is intended to engage the cardboard blank 102.
  • at least one folding tool 112b can also have more than one engagement section 112a.
  • the folding tool 112b is provided with two engagement sections 112a.
  • the folding device 100 comprises a control device 136, which in Figure 2 is only shown schematically.
  • An analog control device 236 can also be used in the embodiment of the Figure 4 be provided.
  • the control device 136 is designed to control the drive motors 116 of the two folding die sub-units 108 either according to a first operating mode or according to a second operating mode. In the first operating mode, the control device 136 controls the drive motors 116 synchronously and in the same direction, while in the second operating mode the drive motors 116 of the frames 110 of the two folding die sub-units 108 are controlled independently of one another.
  • the first operating mode corresponds to the normal operation of the folding device. In the case of very small boxes, however, it may be possible for one of the folding die sub-units to fold a box alone. In this case, it is possible to have the folding device work in double cycle, i.e. to process two cardboard blanks at the same time, namely one in each of the two folding die sub-units. This enables the capacity of the folding device to be doubled.
  • control device 136 can control the drive motors 116 of the two folding die sub-units 108 in the first operating mode according to a first sub-operating mode or according to a second sub-operating mode.
  • the control device 136 controls the drive motors 116 of the two folding die sub-units 108 such that the frames 110 of the two folding die sub-units 108 perform an identical stroke amplitude in the vertical direction H synchronously and in the same direction.
  • the control device 136 controls the drive motors 116 of the two folding die sub-units 108 such that the two frames 110 move in the same direction in the vertical direction H, but with different stroke amplitudes. In this way, in addition to straight trays, slanted trays can also be folded from corresponding cardboard blanks 102.
  • the control device 136 controls the drive motors 116 such that the U-shaped frame 110 moves up and down on the vertical support 114 with a preset stroke amplitude in the height direction H.
  • the folding tools 112 provided on the side legs 110b also move in the height direction H towards the folding head unit 104 until the at least one engagement section 112a engages with the cardboard blank 102.
  • the U-shaped frame 110 then moves further until the predefined stroke amplitude is reached and folds the cardboard blank around the folding head unit 104 into the desired cardboard shape. While the U-shaped frame 110 moves away from the folding head unit 104 in the height direction H, the folded cardboard is transported out of the folding device 100 in a known manner and a new cardboard blank 102 is fed to the folding device 100.
  • the cross member 118 For attachment to the associated machine frame 120, the cross member 118 has two fastening points 138 at each of its transverse ends 118b, which are spaced apart from one another in the longitudinal direction L and can engage with the machine frame 120 and thus connect the cross member 118 to the machine frame 120.
  • One of the fastening points 138a is designed eccentrically to an axis 140 running in the transverse direction Q. If the two fastening points 138a and 138b engage with the machine frame 120, the eccentrically designed fastening element 138a can be rotated in order to engage the cross member 118 and/or components attached to it, for example the vertical support 114, into a desired position, for example an exactly vertical position.
  • a rotary element 142 for example a rotary knob, can be provided at the eccentrically designed fastening point 138a.

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EP22201261.9A 2022-10-13 2022-10-13 Dispositif de pliage pour plier une ébauche de carton Pending EP4353467A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP22201261.9A EP4353467A1 (fr) 2022-10-13 2022-10-13 Dispositif de pliage pour plier une ébauche de carton
US18/484,544 US20240123701A1 (en) 2022-10-13 2023-10-11 Folding apparatus for folding a carton blank

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22201261.9A EP4353467A1 (fr) 2022-10-13 2022-10-13 Dispositif de pliage pour plier une ébauche de carton

Publications (1)

Publication Number Publication Date
EP4353467A1 true EP4353467A1 (fr) 2024-04-17

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ID=83691612

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22201261.9A Pending EP4353467A1 (fr) 2022-10-13 2022-10-13 Dispositif de pliage pour plier une ébauche de carton

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US (1) US20240123701A1 (fr)
EP (1) EP4353467A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4323802A1 (de) * 1992-07-16 1994-01-27 Boix Maquinaria Sa Verbesserungen bei Werkzeugen zur Formgebung von Behältnissen aus Pappe
DE20019140U1 (de) * 2000-11-10 2001-03-01 Somic Sondermaschb Fuer Innerb Vorrichtung zum Verformen von flachliegenden Kartonzuschnitten und damit hergestellter Karton
US20130109555A1 (en) * 2010-06-25 2013-05-02 Boix Maquinaria, S.L. Machine for assembling cardboard boxes
ES2678670B1 (es) * 2017-02-14 2019-05-13 Telesforo Gonzalez Maqu Slu Molde para maquina formadora de cajas por doblado y pegado de planchas de material laminar y metodo de formacion de cajas por doblado y pegado de planchas de material laminar

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4323802A1 (de) * 1992-07-16 1994-01-27 Boix Maquinaria Sa Verbesserungen bei Werkzeugen zur Formgebung von Behältnissen aus Pappe
DE20019140U1 (de) * 2000-11-10 2001-03-01 Somic Sondermaschb Fuer Innerb Vorrichtung zum Verformen von flachliegenden Kartonzuschnitten und damit hergestellter Karton
US20130109555A1 (en) * 2010-06-25 2013-05-02 Boix Maquinaria, S.L. Machine for assembling cardboard boxes
ES2678670B1 (es) * 2017-02-14 2019-05-13 Telesforo Gonzalez Maqu Slu Molde para maquina formadora de cajas por doblado y pegado de planchas de material laminar y metodo de formacion de cajas por doblado y pegado de planchas de material laminar

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SOMIC AMERICA: "SOMIC Virtual Show 424 Case Packer Video", 16 November 2020 (2020-11-16), XP093039980, Retrieved from the Internet <URL:https://www.youtube.com/watch?v=4J1yflDMTBw> [retrieved on 20230418] *

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US20240123701A1 (en) 2024-04-18

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