EP0003724B1 - Machine d'ouverture et de vidage mécaniques de sacs pouvant contenir un produit toxique - Google Patents

Machine d'ouverture et de vidage mécaniques de sacs pouvant contenir un produit toxique Download PDF

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Publication number
EP0003724B1
EP0003724B1 EP79870002A EP79870002A EP0003724B1 EP 0003724 B1 EP0003724 B1 EP 0003724B1 EP 79870002 A EP79870002 A EP 79870002A EP 79870002 A EP79870002 A EP 79870002A EP 0003724 B1 EP0003724 B1 EP 0003724B1
Authority
EP
European Patent Office
Prior art keywords
bag
conveyor
severed
machine according
cutting elements
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.)
Expired
Application number
EP79870002A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0003724A1 (fr
Inventor
Mario V. Murer
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.)
ATELIERS DE CONSTRUCTIONS MECANIQUES ARMAND COLINET SA
Original Assignee
ATELIERS DE CONSTRUCTIONS MECANIQUES ARMAND COLINET SA
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
Priority claimed from BE184946A external-priority patent/BE863699A/fr
Application filed by ATELIERS DE CONSTRUCTIONS MECANIQUES ARMAND COLINET SA filed Critical ATELIERS DE CONSTRUCTIONS MECANIQUES ARMAND COLINET SA
Publication of EP0003724A1 publication Critical patent/EP0003724A1/fr
Application granted granted Critical
Publication of EP0003724B1 publication Critical patent/EP0003724B1/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
    • B65B69/0008—Opening and emptying bags

Definitions

  • the subject of the invention is a machine for mechanical opening and emptying of bags which may contain a toxic product.
  • Known machines for opening and emptying mechanical bags which may contain a toxic product comprising a conveyor intended to bring each bag deposited on this conveyor to a product hopper, cutting means comprising two cutting elements with a vertical axis each mounted at one end of a pivoting arm and capable of cutting the front face and the side faces of a bag during its advancement on the conveyor and a gripping assembly capable of gripping the bag cut on the three aforementioned faces and at the 'bring, after its contents have been emptied, to a location for evacuating the emptied bag (see British patent n ° 1,315,853 and French patent n ° 2,046,774).
  • the present invention aims to eliminate this positive control by motor of the pivoting arms, carrying the cutting elements by surprisingly simple means.
  • the two cutting elements carried by the pivoting arms are subjected to a restraint system tending to permanently bring these cutting elements towards the axis of the conveyor, the force exerted by the restraint system being adjusted so that the displacement of the cutting elements towards the outside with respect to the axis of the conveyor, during the cutting of the three aforesaid faces of the bag, is caused by contact with this bag itself, driven towards the product hopper on the conveyor above, against the action of the restraint system.
  • one of the two pivoting arms of the cutting elements extends towards a longitudinal edge of the conveyor, while the other pivoting arm extends towards the opposite longitudinal edge of the conveyor, each of these pivoting arms being subject to the restraint system so that, when they are not in contact with a cutting bag, the cutting elements are arranged one behind the other, substantially mid-width of the conveyor.
  • the machine comprises means for stopping the transporter carrying a bag, the front face and the two lateral faces of which have been cut so as to allow the gripping assembly to be put in place and grasp the cut bag, as well as means allowing the gripping assembly to evacuate the bag towards the evacuation location by deploying it over twice its length, while the transporter still supporting the weight of the product contained in the bag is restarted to pour the product into the aforementioned hopper, without an effort liable to tear the bag being exerted on it by the gripping assembly.
  • the gripping assembly is movable in a vertical plane and is constituted by an element which carries rotary hooking hooks and is secured to two arms capable of pivoting about an axis so that, when the hooks have each been inserted in the upper part of a cut bag, the rotation of the arms makes it possible to deploy it and to direct it towards its evacuation site, after dumping of its content in the hopper produced by the 'combined action of the transporter.
  • the machine according to the invention advantageously comprises, in order to prevent accidental falling into the hopper of bags and parts of cut bags, in addition to a conveyor, two cutting means and a gripping assembly of the mobile type, a drive means, mounted in the path of the path of the emptied bag and suspended from the box of the gripping assembly, which comprises two rollers arranged in a V shape able to approach each other and to rotate so as to pinch the emptied bag and to drive it towards the evacuation location, in particular when the emptied bag is released from the gripping assembly.
  • the bag opening and emptying machine comprises a bag carrier 1, two cutting means, 2, 2 'of bags, a product hopper 3, a gripping unit 4 of cut bags, a means drive 5 of cut bags and an evacuation location 6 of empty bags.
  • the machine further comprises means suitable for automatically controlling the moving parts of the machine according to a predetermined cycle of operations, these means not being shown in the accompanying drawings.
  • 9 indicates an enclosure which surrounds the machine; the enclosure can possibly be placed under vacuum to avoid the dispersion of dust outside. It should be noted, however, that the machine should not be housed in an enclosure if one can work in the open air, and that it is sufficient to provide a suction device if the opening and emptying of the bags give off dust.
  • Each cutting means 2, 2 ′ comprises a movable cutting element above the conveyor 1, and a constraint system intended to constantly bring the cutting element towards the axis 14 of the conveyor.
  • Each cutting element is a disc 20, 20 'with a vertical axis 21,21', which can be rotated by a belt 22,22 'mounted on the axis of a motor 23, 23'.
  • the vertical axis 21, 21 ' is carried by a pivot arm 24, 24' articulated around a fixed axis 25, 25 'which also carries a link 26, 26' articulated at the free end of the rod 27, 27 'of a cylinder 28, 28' advantageously pneumatic.
  • the fixed axis 25, 25 'of pivoting of the arm 24, 24' is located in the axis of the motor 23, 23 '.
  • the cylinders are mounted respectively, one to the left, the other to the right of the conveyor.
  • the rotary discs 20, 20 ' are therefore one behind the other at the right of said axis; we adjust the height of the discs so that they are exactly at the same level.
  • the restraining device is also adjusted so that the force (arrow 29.29 ′) which it develops is less than the longitudinal force or the sliding force of the bag sliding on the conveyor.
  • a first bag 7 comes into contact with the first rotary disc 20 towards the middle of the front face 70 of the bag, the thrust exerted by the bag on the disc maintaining the contact permanently ( Figures 3, 4) .
  • the bag continuing to advance, the rotating disc causes a cutout 71 in said face 70 ( Figures 4, 5).
  • the bag repelling the disc and the latter resisting the thrust under the effect of the constraint system, the arm 24 is forced to pivot towards the edge of the conveyor, while maintaining contact with the bag, the disc 20 now attacks the lateral face 72 and makes a cutout 73 therein.
  • the disc ceases to be in contact with the bag due to the advancement of the latter, it returns to its initial position at the right of axis 14 of the transporter to allow the next bag to be cut.
  • the cylinder 28 'of the cutting means 2' has been fixed to the other bank of the conveyor relative to the cylinder 28 of the cutting means 2 at a distance such that the rotating disc 20 'attacks the front face 70 of the bag 7 at the time where the disc 20 begins the cutting of the lateral face 72. ( Figure 6).
  • the disc 20 ', engaged in the beginning of the slot resulting from the cut 71 previously operated by the disc 20 now performs a cut 74 so that the front face 70 is completely notched (Figure 7).
  • the pneumatic cylinders 28, 28 ' are connected to a compressed air supply, not shown, which provides the bodies of said cylinders 28, 28' with a set pressure.
  • the advancement of the conveyor 1 can be stopped when the front of a cut bag 77 is in line with the drum 12 (FIG. 10) in front of the opening of the hopper 3, and implement 1 'the gripping assembly 4 of the machine.
  • This comprises two parallel arms 40 in L ( Figures 1, 2, 10) whose branches 41 and 42 are articulated around an axis 43 fixed to the enclosure 9; the upper branches 42 carry at their end two beams 44 which support a box 45 crossed by a shaft 46 provided with rotary hooks 47 intended to grip the cut bags.
  • the shaft 46 is connected by a link 48 to the rod of a jack 49, advantageously pneumatic, fixed to one of the uprights 44, and openings 400 and 401 are provided at the base of the box 45 (FIG. 11) in the course of the rotary hooks.
  • the link 48 articulated around the shaft 46, rotates the latter in the direction of clockwise, so that the points 402 exit through the openings 400, pass through the bag 77 a first time at this location, then a second time at the opening 401, to return to the box.
  • the bag is therefore. pierced twice and this safety grip prevents everything. unhooking the bag during its movement towards the evacuation 6, the bag being emptied into the hopper 3 during this operation.
  • a jack 403 advantageously pneumatic, the bottom of which is attached to a fixed suspension point 90 and of which the rod 404 is integral with a lever 405 articulated around the axis 43 to which are linked the arms 40 in L, the actuation of the jacks 403 having to allow the gripping assembly 4 to travel in substance a quarter of a circle above the hopper 3.
  • a drive means 5 ( Figures 1, 2, 10, 12) intended to participate in the routing of the cut bags to the evacuation 6 of empty bags and especially to prevent the accidental fall of bags and parts of bags in the hopper.
  • This means which is attached to fixed vertical uprights 91, comprises on the one hand, two rollers 51 and 52, one of which can rotate continuously under the action of an electric motor 53 and, on the other hand, two cylinders 54, advantageously pneumatic, each of which is suspended from the bottom to a fixed support 92 integral with the upright 91 and the rod 55 of which acts by a hinge 56 and a pivot point 57 of a bent lever 58-59 itself integral one of the rollers 51 or 52, the pivot point 57 of each of the bent levers being mounted on a cross member 93 fixed between the vertical uprights 91; the drive means also comprises two free rollers 500 parallel to the support 93.
  • the stop of the conveyor 1 triggers the expansion of the jacks 403 (FIG. 10); the gripping assembly 4 performs its trajectory in the opposite direction to that of the curved arrows 406 and places the box 45 on the cut bag 77 stopped on the conveyor.
  • the stop of the jacks 403 controls the expansion of the jack 49 so that the hooks 47, advantageously 3 to 5 in number, exit through the openings 400 and return to the box through the openings 401 after having twice pierced the upper part of the bag 77 ( Figures 10 and 11).
  • the complete expansion of the jack 49 which enabled gripping, in turn triggers the reaction of the jacks 403 and, simultaneously or almost, the restarting of the conveyor 1.
  • rollers 51 ′, 52 ′ having tightened on the emptied bag drive it towards the discharge opening 6; the free rollers 500, mounted respectively in front of and behind the rollers 51 ', 52', favor the passage.
  • the rollers 51 ', 52' move apart and the whole machine is ready to empty the next bag.
  • the invention is not limited to the embodiment which has been described and shown by way of example and it would not be departing from its scope by making modifications to it.
  • detection and control means such as feelers, photoelectric and infrared cells, limit switches, scales, shutters, etc.
  • the invention obviously does not relate to the application of pneumatic cylinders and they can be replaced by mechanical, hydraulic or other means.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
EP79870002A 1978-02-06 1979-01-30 Machine d'ouverture et de vidage mécaniques de sacs pouvant contenir un produit toxique Expired EP0003724B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE184946 1978-02-06
BE184946A BE863699A (fr) 1978-02-06 1978-02-06 Machine d'ouverture et de vidage mecaniques de sacs pouvant contenir un produit toxique

Publications (2)

Publication Number Publication Date
EP0003724A1 EP0003724A1 (fr) 1979-08-22
EP0003724B1 true EP0003724B1 (fr) 1981-12-16

Family

ID=3843093

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79870002A Expired EP0003724B1 (fr) 1978-02-06 1979-01-30 Machine d'ouverture et de vidage mécaniques de sacs pouvant contenir un produit toxique

Country Status (5)

Country Link
US (1) US4289438A (enrdf_load_stackoverflow)
EP (1) EP0003724B1 (enrdf_load_stackoverflow)
CA (1) CA1124199A (enrdf_load_stackoverflow)
DE (1) DE2961569D1 (enrdf_load_stackoverflow)
FR (1) FR2416182A1 (enrdf_load_stackoverflow)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4504183A (en) * 1981-02-14 1985-03-12 Jsk Company Ltd. Bag opening machine
DE3229765A1 (de) * 1982-08-10 1984-02-16 GAO Gesellschaft für Automation und Organisation mbH, 8000 München Vorrichtung zum entfernen einer banderole von einem blattbuendel
ATE31272T1 (de) * 1983-01-18 1987-12-15 Henri Schepens Vorrichtung fuer die kontinuierliche und selbsttaetige oeffnung und entleerung von saecken.
US4610596A (en) * 1984-10-26 1986-09-09 Bouldin & Lawson, Inc. Apparatus for removing cover from baled material
FR2651172A1 (fr) * 1989-08-31 1991-03-01 Fahr Bucher Gmbh Procede de chargement automatique de machines avec des masses deballees.
GB9027976D0 (en) * 1990-12-22 1991-02-13 Palamatic Handling Syst Bag slitting machine
US5222511A (en) * 1991-06-27 1993-06-29 Diatec Environmental Apparatus for debagging dust-containing or hazardous materials
US5277014A (en) * 1992-09-14 1994-01-11 Abr Corporation Bag discharge station
GB9222777D0 (en) * 1992-10-30 1992-12-09 Narbonne Yves Apparatus for handling biological fluid bags
US5368432A (en) * 1993-05-06 1994-11-29 Schoenhard; James D. Apparatus and method for opening plastic bags containing recyclable materials
IL106818A (en) * 1993-08-27 1996-10-31 Ima Engineering Ltd Apparatus for removing flexible covers from bales
SE506077C2 (sv) * 1995-03-10 1997-11-10 Bala Press Ab Förfarande för att hantera gods och anordning härför
SE0402848D0 (sv) * 2004-11-22 2004-11-22 Confib Ab Method for dosing reinforcing fibres for the manufacturing of fibre concrete and the continuous packing used
NZ540013A (en) * 2005-08-12 2007-05-31 Powder Projects Ltd Powder handling device
WO2012163311A1 (de) * 2011-06-01 2012-12-06 Dirk Barnstedt Vorrichtung zum öffnen von verpackungen
ES2401450B1 (es) * 2011-06-10 2014-04-02 Jesús ORTI ESTIGUIN Máquina para el reciclaje de bolsas de orina y diálisis
FR2996212B1 (fr) * 2012-10-01 2014-10-10 Spcm Sa Installation pour vider des sacs de produits pulverulents et procede mettant en œuvre l'installation
HUE046003T2 (hu) * 2017-07-31 2020-02-28 Grifols Worldwide Operations Ltd Automatikus berendezés fagyasztott vérkészítmény tasakok ürítésére
CN107499628B (zh) * 2017-07-31 2019-07-05 赛摩电气股份有限公司 一种模块式连续自动破袋投料机
EP3556669B1 (en) * 2018-04-20 2021-06-16 Tetra Laval Holdings & Finance S.A. Apparatus for emptying bags
RU2704868C1 (ru) * 2019-02-07 2019-10-31 Общество с ограниченной ответственностью "Полипласт" Автоматизированная установка растаривания емкостей и растворения токсичных материалов
CN110745324B (zh) * 2019-10-31 2021-12-28 上海电机学院 一种垃圾袋破袋回收装置
FI20235968A1 (en) * 2023-08-31 2025-03-01 Tamtron Prec Oy A bag opening arrangement in an emptying station and a method thereof

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1312805A (en) * 1969-06-14 1973-04-11 Takiguchi H Apparatus for automatically and successively opening bags of powder or other particulate material
GB1315853A (en) * 1970-02-12 1973-05-02 Tac Construction Materials Ltd Machine for opening and emptying bags containing fibrous materials
US3853235A (en) * 1972-02-22 1974-12-10 Johns Manville Apparatus for opening and emptying a container
US3948402A (en) * 1973-07-16 1976-04-06 Schott Jr Charles Mandeville Bag opening and emptying
US4177726A (en) * 1977-01-12 1979-12-11 Certain-Teed Corporation Automatic bag opener

Also Published As

Publication number Publication date
FR2416182A1 (fr) 1979-08-31
US4289438A (en) 1981-09-15
FR2416182B1 (enrdf_load_stackoverflow) 1982-12-17
CA1124199A (en) 1982-05-25
EP0003724A1 (fr) 1979-08-22
DE2961569D1 (en) 1982-02-11

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