EP0142846A1 - Machine pour l'enlèvement automatique des enveloppes en matière plastique de charges palettisées - Google Patents

Machine pour l'enlèvement automatique des enveloppes en matière plastique de charges palettisées Download PDF

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Publication number
EP0142846A1
EP0142846A1 EP84113959A EP84113959A EP0142846A1 EP 0142846 A1 EP0142846 A1 EP 0142846A1 EP 84113959 A EP84113959 A EP 84113959A EP 84113959 A EP84113959 A EP 84113959A EP 0142846 A1 EP0142846 A1 EP 0142846A1
Authority
EP
European Patent Office
Prior art keywords
cutting
wrapping
machine
fact
cut
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
EP84113959A
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German (de)
English (en)
Other versions
EP0142846B1 (fr
Inventor
Maurizio Chierighini
Franco Sisti
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.)
Leonardo SRL
Original Assignee
Leonardo SRL
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 Leonardo SRL filed Critical Leonardo SRL
Priority to AT84113959T priority Critical patent/ATE34143T1/de
Publication of EP0142846A1 publication Critical patent/EP0142846A1/fr
Application granted granted Critical
Publication of EP0142846B1 publication Critical patent/EP0142846B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B69/00—Unpacking of articles or materials, not otherwise provided for
    • B65B69/0033—Unpacking of articles or materials, not otherwise provided for by cutting

Definitions

  • This invention concerns a machine for automatically removing plastic wrapping material from palletized loads, and in particular, a machine capable of automatically and successively carrying out all the horizontal and vertical cutting operations according to a pre-established work procedure.
  • the scope of this invention is to provide a fully automatic machine for cutting the sides of plastic wrapping material on palletized loads as they are carried forward on a suitable conveyor with conveys them to a de-palletizing unit, for their subsequent use.
  • a further scope of the invention is to provide a machine of the aforesaid type which is capable of adapting to palletized loads of different heights and which is capable of making cuts in the plastic wrapping material, along any given horizontal cutting level.
  • the machine comprises a rigid structure consisting of two lateral uprights 1 and an upper crossbeam 2, which define a cutting area of the plastic wrapping material of palletized loads, and which house the mechanical systems for the vertical movement of one or more supporting means for cutting members 4, for example a square or rectangular-shaped annular frame 3, provided with a pre-established number of cutting members 4, as described further on.
  • Reference 5 indicates a palletized load which is situated beneath and axially aligned with the cutting member supporting frame 3, carried by a service conveyor 6, at either side of which are two boxes for collecting the cut portions of the wrapping 9 which are gripped and removed from the load by means of two articulated arms 8 sliding along the upper crossbeam 2 of the structure of the machine.
  • the system for the vertical movement of the frame 3 supporting the cutting members comprises two vertical guide rods 10, fitted in the upright 1, along each of which slide sleeves 11, which are connected by means of arms 12, to two opposite sides of the frame 3; each sleeve 11 is also connected to a branch of an endless chain 13, or equivalent drive mechanism, which winds around two gear wheels 14 and 15 situated at the ends of the aforesaid guide rod 10.
  • the upper gear wheels 15 are interconnected by a drive synchronizing shaft 16, whilst one of the lower gear wheels 14 is driven by an electric motor 17.
  • the annular frame 3 supporting the cutting members 4 can therefore be moved vertically, along the palletized load 5, from an upper position above the load 5 itself, to cutting positions below in correspondence with the pre-established cutting heights or planes for the wrapping 9 of the load.
  • Figures 4 and 5 show a typical disposition of the cutting members provided on the movable frame 3 in the event of a square-shaped load. As can be seen, the frame 3 presents a similar conformation to that of the load 5, surrounding the latter peripherally.
  • the annular frame 3 is provided with a set of cutting members 4a for cutting the wrapping 9 horizontally, for example four horizontal cutting members 4a, one for each side of the annular frame 3, which follow each other peripherally around the frame itself, in a clockwise direction of movement.
  • the annular frame 3 also comprises, on two opposite sides and in a central position of the sides, at right angles to the direction of movement of the load 5 on the conveyor 6, two cutting members 4b for cutting the wrapping 9 vertically, as explained further on.
  • Each horizontal cutting member 4a is mounted on its own carriage 18, which is movable along horizontal guides 19 (fig. 7) secured in a plane below the frame 3.
  • each carriage 18 is connected to one branch of an endless chain 19 which extends along one side of the frame, and the chains of the carriages are interconnected by means of a set of pairs of idle gears 20 situated at the corners of the frame 3.
  • One of the pairs of gears is driven by a suitable geared motor 19a fitted on the frame 3 by means of a belt drive dimensioned so as to slip in the event of an overload or optionally comprising an equivalent slipping member.
  • the horizontal cutting members 4a move simultaneously along their respective sides of the frame, peripherally around the load, slitting or cutting a corresponding portion of the wrapping 9.
  • the four horizontal cutting members 4a move simultaneously, at the same speed, as the palletized load is square in shape; therefore, gears of the same diameter are used.
  • gears of the same diameter are used in the case of rectangular-shaped pallets.
  • individual drive units for each cutting member or opposing pairs of cutting members so as to permit independent control with the appropriate cutting speed.
  • the vertical cutting members 4b are in a fixed position on the annular frame 3 and are controlled by a cylinder 21 situated in a plane above the frame 3, to move radially, that is to say, to move each cutting member 4b perpendicularly, to and from the face of the wrapping to be cut; such cutting members 4b are similar in conformation to the horizontal cutting members 4a and have their longitudinal axes sloping downwards, as shown in fig. 5.
  • the cutting means 4, whether they be horizontal 4a or vertical 4b cutting members, may be of any type and supported in any way; according to a preferred embodiment, the cutting means 4 are of the hot-wire type, that is to say, as shown in figure 6, comprising a loop-shaped electric conductor 22 the two ends of which are connected to a source of electric power and are secured by means of bolts 23, or otherwise secured, to a plate 24 hinged to a pivot 25 on a slide 25a, so as to be able to rotate or reciprocate freely in either direction.
  • One central, or two lateral return springs 26 keep the cutting member 22 orientated in a central position according to its longitudinal axis, that is to say, at right angles to the surface of the wrapping 9 to be cut; the springs 26 are consequently connected to pins 27 of the reciprocating plate 24 and respectively to pins 28 of the slide 25a.
  • each cutting member that is to say, each slide 25a, is connected to the rod of a control cylinder 30, situated on a plate 29, which acts normally to move the cutting member towards and away from the surface of the wrapping 9 to be cut.
  • figure 8 shows how to support the hinged arms 8 for removing the cut wrapping.
  • the hinged arms 8 are made to open and close against the wrapping ; of the load 5, by means of a control cylinder (not shown), or in any other way, and are provided with gripping members 34, for example, of the mechanical type, in order to grip and hold the edges of the cut wrapping 9 on the palletized load, during the cutting operations, as described further on.
  • the carriages 32 supporting the hinged arms 8 can be made to slide along the guides 33 for example by means of pneumatic control cylinders 35 (only one shown) housed inside the crossbeam 2.
  • the machine operates in the following way: when the machine is at rest, the frame 3 supporting the cutting members 4 is completely raised above the palletized load 5 and with the carriages 18 at the end of stroke, that is to say, in correspondence with the corners of the quadrilateral defined by the frame 3, in the case in question.
  • the cutting members 4a moreover are in their forward position, capable that is, of interfering with the wrapping 9 to be cut, with the wire 22 under voltage.
  • the palletized load 5 covered by the wrapping 9 moves forward on the service conveyor 6 of the machine; two converging side panels (not shown), if necessary, bring the axis of the load 5 to coincide with the axis of the frame 3 of the machine and a photoelectric sensing means or limit switch stops the load 5, so that the transversal axis coincides with the transversal axis of the machine.
  • the frame 3 lowers until a photoelectric sensing means mounted on the frame itself, intercepts the top of the load 5 and stops the frame 3, by means of a control system, so that the cutting means 4a are on a lower plane than the top plane of the load 5.
  • each cutting element 4a runs the complete contour of one of the four corners once only, where there are generally very thick folds which form during the thermo-shrinking or wrapping process.
  • the carriage 18 can be made to reverse direction and run backwards for a short distance which is sufficient to enable it to reach the corner situated at the end of the cutting stroke; after which the cylinder 30 causes the cutting element 4a to move back, the sliding direction is once again reversed, and the carriage travels back to the final limit switch, where the pneumatic cylinder 30 moves the cutting element 4a forward into the normal working position.
  • each corner can be re-cut by the cutting members. All the horizontal cutting members obviously work simultaneously to cut their respective portion or side of the wrapping 9.
  • the frame 3 is lowered, bringing the cutting members 4a in correspondence with the level of the plane which separates the load from the pallet. Exactly the same operations are carried out for cutting the wrapping at this level, as those previously described for cutting the wrapping at the higher level, but in the opposite direction.
  • the vertical cutting elements 4b which are mounted on the frame 3 in correspondence with the longitudinal axis of the palletized load, are placed in position, and the frame 3 is raised up to the position of the upper cutting level, thus carrying out the vertical cut.
  • the articulated arms 8, which when at rest are close to the uprights 1, in an open position, are made to move forward closed until the pairs of gripping elements 34 come to rest against the wrapping 9 at the sides of the vertical cuts, and the gripping elements 34 are actuated to grip the vertical edges of the cut wrapping.
  • the vertical cut is completed, the cutting elements 4b are made to recede and the frame 3 returns to the rest position.
  • the arms 8 open out and are made to move backwards towards the uprights 1 of the machine, each arm carrying with it half of the wrapping 9 which laterally covered the load.
  • the upper gripping elements loosen their grip so that the two portions of the wrapping fall forward, held by the lower gripping elements.
  • the other gripping elements After a short while, which corresponds to the time it takes for the wrapping to drop into the boxes 7, the other gripping elements also loosen their grip and the cut wrapping slips into the boxes 7.
  • the palletized load still keeps its upper wrapping cap which serves to stabilize the unwrapped load as it is conveyed towards the de-palletizing machine which normally removes the upper wrapping cap, remaining after the cutting, by means of an arm provided with suction pads.
  • the latter may be supported for a horizontal movement, towards and away from the plastic wrapping 9 to be cut, and for a vertical movement, so as to avoid possible interference with the horizontal cutting members, and in order to shift the vertical cutting member 4b itself to the established starting point of the cut.
  • This dual movement of the cutting member 4b can be achieved for example by means of a pair of double-acting control cylinders comprising a first horizontal-axis cylinder 36, mounted on the movable frame 3, the rod of which is provided with a lock 37 guided along a plate 38. Said lock 37 is, in turn, secured to a second control cylinder 39 with a vertically arranged axis.
  • a second lock 40 Fixed to the lower end of the rod of the second cylinder 39, is a second lock 40 provided with a pivoting pin 41 of the cutting member 4b, that is to say, of its supporting plate 42; a spring 43 is connected between a slide bar 44 for guiding the cylinder rod 39 and the plate 42 of the cutting member, which acts upon the latter to make it rotate upwards.
  • FIG 10 shows a possible embodiment of a gripper 34 for gripping the vertical cut edges of the plastic wrapping 9 to be removed from the palletized load.
  • This gripper is movably supported by a relative arm 8, and is suitably pushed forward by a spring, as shown.
  • the gripper comprises a first jaw 45 held by a shank 46 sliding in the supporting arm 8 and thrust forward by a spring 46a; a second movable jaw 47 is held by a swivelling arm 48 controlled by a rotatory cylinder 49 secured to a plate 50 which is longitudinally movable with the shank 46 of the jaw 45.
  • FIG. 1 illustrates a machine comprising a square-shaped frame and, more in general, an annular-shaped frame, provided with cutting members 4a acting upon all sides of the palletized load, and in particular, two horizontal cutting members 4a, acting respectively on the front and rear faces of the wrapping, with reference to the direction of movement of the load 5 on the conveyor 6, and two horizontal cutting members 4a acting respectively on the two sides or lateral faces of the aforesaid load; the vertical cutting members 4b and the grippers 34 for gripping and removing the cut wrapping, being preferably arranged on the sides at right angles to the direction of movement of the load, that is to say, in correspondence with the front and rear faces.
  • the machine may be provided with just two horizontal cutting members 4a acting on two opposite sides of the load 5, which are fixed, or horizontally movable, on suitable arms or supporting means which are vertically movable from an upper operative position to lower operative positions, simultaneously in the same manner as the afore-mentioned annular frame 3.
  • the cut is achieved by means of the relative movement between the cutting members themselves and the palletized load, for example, during the forward movement of the load itself on the conveyor 6.
  • the cutting members may be optionally moved and guided horizontally in the same manner as the previously described cutting members 4a.
  • FIG. 1 This combination, in a single machine is schematically shown in figure 1 where reference 51 indicates four blade cutters, arranged two by two, on the two sides, at the height of the two upper and lower cutting levels; said cutters 51 must obviously be placed on the rear side or leading end of the load 5 into the machine, so that they act simultaneously starting from the front face of the load 5 which moves forward on the conveyor 6.
  • the upper and/or lower cutters 50 may also be provided in combination with the four horizontal cutting members 4a on the movable frame 3, so as to effect a sort of pre-cut on the sides of the plastic wrapping in correspondence with the cutting levels on which the previously described thermal cutting members 4a will subsequently operate. This ensures that the wrapping 9 protecting the load is cut perfectly and that the gripping members 34 are not forced, in certain cases, to exert excessive energy in removing parts of the wrapping 9 which accidentally remain uncut.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
EP84113959A 1983-11-21 1984-11-19 Machine pour l'enlèvement automatique des enveloppes en matière plastique de charges palettisées Expired EP0142846B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84113959T ATE34143T1 (de) 1983-11-21 1984-11-19 Maschine zum automatischen entfernen der kunststoffhuellen von palettierten lasten.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2379583 1983-11-21
IT23795/83A IT1165491B (it) 1983-11-21 1983-11-21 Macchina per l'asportazione automatica di involucri in plastica da carichi palettizzati

Publications (2)

Publication Number Publication Date
EP0142846A1 true EP0142846A1 (fr) 1985-05-29
EP0142846B1 EP0142846B1 (fr) 1988-05-11

Family

ID=11210054

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84113959A Expired EP0142846B1 (fr) 1983-11-21 1984-11-19 Machine pour l'enlèvement automatique des enveloppes en matière plastique de charges palettisées

Country Status (4)

Country Link
EP (1) EP0142846B1 (fr)
AT (1) ATE34143T1 (fr)
DE (1) DE3471064D1 (fr)
IT (1) IT1165491B (fr)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0249562A1 (fr) * 1986-06-13 1987-12-16 Jacques Gabriel Auguste Thibault Procédé et installation de déhoussage et de déchargement d'une paletée
US4773148A (en) * 1986-04-03 1988-09-27 Hokkai Can Co., Ltd. Method of and apparatus for removing tying band
EP0569643A1 (fr) * 1992-05-14 1993-11-18 Oji Seitai Kaisha, Ltd. Appareil pour enlever l'enveloppement au moyen de leviers oscillants et de pinces
EP0583742A1 (fr) * 1992-08-18 1994-02-23 Körber Ag Procédé et machine pour enlever un enveloppement en jute d'une balle de tabac
EP0587051A1 (fr) * 1992-09-03 1994-03-16 Kao Corporation Procédé et appareil pour découper et récupérer un élément de cerclage
EP0625465A2 (fr) * 1993-04-07 1994-11-23 ERAPA-CEKA Maschinenbau und -handel GmbH Procédé et dispositif pour éliminer une feuille en matière plastique de protection ou de sécurité
WO2002010022A1 (fr) * 2000-07-31 2002-02-07 Aetna Group S.P.A. Appareil servant a retirer un film d'emballage plastique de palettes de produits
US7174695B2 (en) 2003-06-04 2007-02-13 Porter Dan C De-packaging machine
ITMO20090272A1 (it) * 2009-11-12 2011-05-13 Bortolin Kemo Spa Macchina per la depallettizzazione di un carico multistrato.
US7963086B2 (en) 2007-11-06 2011-06-21 Porter Technologies, Llc Package unbundling system
ITBO20110372A1 (it) * 2011-06-28 2012-12-29 Mac Due S R L Imballaggio in foglia e/o film di materia plastica e/od altro materiale, aperto superiormente o predisposto per una tale apertura, per fungere anche da espositore dei prodotti in questo collocati e dotati di confezione propria e procedimento per la p
CN107472615A (zh) * 2017-09-06 2017-12-15 山东农业大学 农用除膜破捆装置
CN110884742A (zh) * 2019-12-25 2020-03-17 中山德马克环保科技有限公司 一种异型包装壳拆包机
CN112298718A (zh) * 2020-09-23 2021-02-02 国网山东省电力公司昌乐县供电公司 一种电力设备包装箱开箱装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4315050A1 (de) * 1993-05-06 1994-11-10 Vfi Verpackungstech Anlage zum Entpalettieren von Palettengebinden
DE9314339U1 (de) * 1993-09-23 1995-02-02 MSK-Verpackungs-Systeme GmbH, 47533 Kleve Vorrichtung zum Entfernen einer über einen Gutstapel gezogenen Folienhaube
DE202009005086U1 (de) 2009-07-30 2010-12-16 Autefa Automation Gmbh Öffnungseinrichtung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3175288A (en) * 1964-05-07 1965-03-30 William N Garwick Tray pack processing cutter
GB1097859A (en) * 1965-04-23 1968-01-03 Wiking Lars Improved apparatus for opening a package having a wrapping of heat sensitive foil material
US3889442A (en) * 1972-03-13 1975-06-17 Platmanufaktur Ab Method of and device for removing a shrinkable plastic wrapping from a number of units, e.g. bottles, forming a substantially parallelepipedical body
WO1979000682A1 (fr) * 1978-03-02 1979-09-20 Born Ag P Machine a delier et a eloigner les ficelles et bandages d'une marchandise emballee

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3175288A (en) * 1964-05-07 1965-03-30 William N Garwick Tray pack processing cutter
GB1097859A (en) * 1965-04-23 1968-01-03 Wiking Lars Improved apparatus for opening a package having a wrapping of heat sensitive foil material
US3889442A (en) * 1972-03-13 1975-06-17 Platmanufaktur Ab Method of and device for removing a shrinkable plastic wrapping from a number of units, e.g. bottles, forming a substantially parallelepipedical body
WO1979000682A1 (fr) * 1978-03-02 1979-09-20 Born Ag P Machine a delier et a eloigner les ficelles et bandages d'une marchandise emballee

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4773148A (en) * 1986-04-03 1988-09-27 Hokkai Can Co., Ltd. Method of and apparatus for removing tying band
EP0249562A1 (fr) * 1986-06-13 1987-12-16 Jacques Gabriel Auguste Thibault Procédé et installation de déhoussage et de déchargement d'une paletée
FR2600040A1 (fr) * 1986-06-13 1987-12-18 Thibault Jacques Procede et installation de dehoussage et de dechargement d'une paletee.
EP0569643A1 (fr) * 1992-05-14 1993-11-18 Oji Seitai Kaisha, Ltd. Appareil pour enlever l'enveloppement au moyen de leviers oscillants et de pinces
EP0583742A1 (fr) * 1992-08-18 1994-02-23 Körber Ag Procédé et machine pour enlever un enveloppement en jute d'une balle de tabac
US5425219A (en) * 1992-09-03 1995-06-20 Kao Corporation Method and apparatus for cutting and recovering bundling body
EP0587051A1 (fr) * 1992-09-03 1994-03-16 Kao Corporation Procédé et appareil pour découper et récupérer un élément de cerclage
EP0625465A2 (fr) * 1993-04-07 1994-11-23 ERAPA-CEKA Maschinenbau und -handel GmbH Procédé et dispositif pour éliminer une feuille en matière plastique de protection ou de sécurité
EP0625465A3 (en) * 1993-04-07 1994-12-28 Erapa Ceka Maschbau Method and device for removing a fastening or protective sheeting.
WO2002010022A1 (fr) * 2000-07-31 2002-02-07 Aetna Group S.P.A. Appareil servant a retirer un film d'emballage plastique de palettes de produits
US7174695B2 (en) 2003-06-04 2007-02-13 Porter Dan C De-packaging machine
US7963086B2 (en) 2007-11-06 2011-06-21 Porter Technologies, Llc Package unbundling system
ITMO20090272A1 (it) * 2009-11-12 2011-05-13 Bortolin Kemo Spa Macchina per la depallettizzazione di un carico multistrato.
WO2011058456A1 (fr) * 2009-11-12 2011-05-19 Bortolin Kemo S.P.A. Machine pour dépalettiser une charge multicouche
ITBO20110372A1 (it) * 2011-06-28 2012-12-29 Mac Due S R L Imballaggio in foglia e/o film di materia plastica e/od altro materiale, aperto superiormente o predisposto per una tale apertura, per fungere anche da espositore dei prodotti in questo collocati e dotati di confezione propria e procedimento per la p
CN107472615A (zh) * 2017-09-06 2017-12-15 山东农业大学 农用除膜破捆装置
CN110884742A (zh) * 2019-12-25 2020-03-17 中山德马克环保科技有限公司 一种异型包装壳拆包机
CN112298718A (zh) * 2020-09-23 2021-02-02 国网山东省电力公司昌乐县供电公司 一种电力设备包装箱开箱装置

Also Published As

Publication number Publication date
IT8323795A0 (it) 1983-11-21
ATE34143T1 (de) 1988-05-15
DE3471064D1 (en) 1988-06-16
EP0142846B1 (fr) 1988-05-11
IT1165491B (it) 1987-04-22

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