EP0015861B1 - Procédé et dispositif pour vider mécaniquement des sacs - Google Patents

Procédé et dispositif pour vider mécaniquement des sacs Download PDF

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Publication number
EP0015861B1
EP0015861B1 EP80420028A EP80420028A EP0015861B1 EP 0015861 B1 EP0015861 B1 EP 0015861B1 EP 80420028 A EP80420028 A EP 80420028A EP 80420028 A EP80420028 A EP 80420028A EP 0015861 B1 EP0015861 B1 EP 0015861B1
Authority
EP
European Patent Office
Prior art keywords
bag
gullet
splitting
suspended
lid
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
EP80420028A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0015861A1 (fr
Inventor
Jacques Cellier
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.)
Satil SA
Original Assignee
Satil 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
Application filed by Satil SA filed Critical Satil SA
Priority to AT80420028T priority Critical patent/ATE3016T1/de
Publication of EP0015861A1 publication Critical patent/EP0015861A1/fr
Application granted granted Critical
Publication of EP0015861B1 publication Critical patent/EP0015861B1/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 present invention relates to the emptying of paper, plastic, jute or any other material bags.
  • the technical sector of the invention is that of the construction of handling equipment.
  • FR-A-2367688 Other equipment has also been proposed (FR-A-2367688) involving a mechanical turning of the bag placed in a reception chute which is then moved to be brought into a state of cooperation with a fixed cover surmounting a container for receiving the content. from the bag.
  • the chute and the cover then together form a substantially sealed envelope in which the bag slides until it rests on a reception chute internal to the container. In this state, an opening of the bag is then produced by a saw blade cutting one of the side walls of the bag.
  • These devices also involve a tilting operation of the receiving chute so as to cause the slit part of the bag to be turned over in order to facilitate emptying.
  • this sliding with belly effect has the effect of causing a compaction or a sort of compaction of the product which disturbs by its compactness the cutting action of the saw blade. This generally results in an incorrect cut having the effect, at the time of the inversion of the cut part, of producing pockets or local folds or pinches opposing a complete emptying of the contents of the bag.
  • the compaction or compaction of the product in the lower part of the bag located below the cut made by the saw blade, produces a kind of agglomeration which is not favorable, even after turning over, at correct and complete evacuation by simple gravity effect.
  • the object of the invention aims to solve the above problems and proposes a new emptying process making it possible to carry out, in a practical, fast and safe manner, a clean cut of a bag as well as a complete emptying of its contents. .
  • the design of the object of the invention is intended to ensure the maintenance of a full bag without the latter tending to produce an accentuated stomach effect as this results in the case of pressing its lower part on a receiving support, so as to achieve, in all cases, a correct cut without producing waste or debris from the bag itself.
  • Another object of the invention is to cut the bag under the best conditions favorable to opening by gravity flow of the product, regardless of how the bag is closed and the nature of its material constituting it.
  • the means provided according to the invention aim to obtain a correct opening, even if the bag is made of a relatively resistant flexible material folded and sewn or welded to ensure closure.
  • Another object of the invention is to ensure that the draining of the product by gravity is supplemented by a forced draining effect having the effect of eliminating, releasing or causing any residual product likely to be maintained to flow. in a pocket, a fold or a corner of the bag in order to obtain the most complete emptying possible. This eliminates the risk of external pollution of the surrounding environment during the recovery of empty bags and also to recover the maximum amount of content of each bag.
  • Yet another object of the invention is to allow the most complete emptying possible by reducing to the minimum value the film or the layer of non-agglomerated product usually remaining on the internal face of the bag.
  • An additional object is to also allow the emptying of bags constituted by two non-adherent envelopes for reasons of safety, handling or protection of the bagged product.
  • the method according to the invention for mechanically emptying the contents of bags, and of the type according to which a closed bag is deposited on a mobile receiving chute, said chute is moved to apply it in a substantially sealed manner against the underside of a lid surmounting a container into which the contents of the bag are to be poured and the bag is split transversely in its lower part, is characterized in that the bag is immobilized and suspended by mechanical means in the lid and the chute receptor.
  • the invention also relates to a device for implementing the above method and comprising for this purpose, on the one hand, means for immobilizing and suspending a full, closed bag, in an envelope constituted by a mobile receiving chute and a cover surmounting a receptacle for receiving the content of each bag, on the other hand, means for slitting the bag and constituted by a shaping device and by at least one cutting edge blade.
  • Fig. 1 shows the device according to the invention comprising a frame 1 on which is articulated, by at least one axis 2, a chute 3 for receiving a bag 4.
  • the frame 1 supports by an articulation 5 a jack 6 whose rod 7 is articulated a support 8 connecting the chute 3 to the hinge pin 2.
  • the jack 6 is intended to be able to cause the chute 3 to move from a bag loading position 4, as shown in FIG. 1, in a second position, visible in FIG. 7, in which it cooperates closely with a cover 9 carried by a container 10 which is attached to or fixed to the frame 1. In the cooperation position, the chute 3 and the container 9 together form an envelope 11 formed, substantially sealed which is open towards the internal volume of the container 10.
  • the device is provided with means for immobilizing and suspending a bag 4 and these means consist of claws or pins 12 which rise, as can be seen in FIGS. 2 and 3, from the plane of a frame 13 carried by the cover 9.
  • the frame 13 is connected to the rod 14 of a double-acting cylinder 15 carried by a base 16 fixed on the top 17 of the cover 9.
  • This arrangement is provided so that the pins 12, in the extended position of the rod of the jack 15, as illustrated in FIG. 1, pass through the cover 9 and protrude relative to the interior volume of the latter or are, on the contrary, completely retracted with respect to said volume in a retraction position of the rod of the jack.
  • the immobilization means and hanging a bag 4 are completed by a set of pins 18 carried by the chute 3 in a similar manner to that described for the cover 9.
  • the pins 18 are mounted on a frame 19 which is connected to the piston rod of a jack 20 mounted and fixed by a base 21 on the bottom of the chute 3.
  • the jack 20 is intended to hold the pins 18 in a position of extension relative to the internal volume of the chute 3 or, at the on the contrary, to make them retract with respect to said volume.
  • the device according to the invention also comprises means for slitting the lower part or end of a bag 4 disposed in the envelope 11 and these means comprise, first of all, as shown in FIGS. 1 and 6, a former 22 consisting of a panel, a plate, or the like 23 mounted on or carried by a hinge pin 24 connected to a drive member 25.
  • the plate 23 is partly arranged inside the volume of the container 10, being located in the extension of the internal volume of the cover 9.
  • the lower part of the plate 23 forms a shaping chute 26 which is located, relative to the pins or claws of the cover, at a distance which is slightly less than that between the upper part of a bag 4 in the loading position in the chute 3 and the pins 18.
  • the chute 26 extends, perpendicular to the longitudinal axis of the cover 9, being located substantially in the plane of the latter parallel to the top 17.
  • the means for slitting a bag according to the invention also comprise at least one cross-sectional assembly formed by a cutting edge blade 27 which is made mobile along a guide track 28 extending parallel to the longitudinal axis of the chute 26.
  • the guide track 28 is disposed laterally to the longitudinal median plane of the chute 26, so that the cutting edge of the blade 27 intersects the plane passing through the free edge 26a of the chute and parallel to the median longitudinal plane of this last.
  • the blade 27 is mounted on a carriage 29 which is, for example, carried by slides 30 constituting the guide track 28.
  • the carriage 29 is connected to a drive member 31 such as a jack.
  • the device described above operates as follows.
  • a bag 4 is loaded on the chute 3 so as to rest on the bottom 3a.
  • the jack 6 is then supplied to cause the chute 3 to tip over and turn over which is brought into the position according to FIG. 7.
  • the bag 4 tends to slide and therefore comes to bear in the shaping chute 26.
  • the jacks 15 and 20 are supplied to cause the extension of the pins 12 and 18 brought into the bag 4 placed in the envelope 11.
  • the pins 12 and 18 then immobilize and keep the bag 4 in suspension in the required position in which the lower part is just shaped by the chute 26.
  • This phase of the operating cycle can be controlled by a power supply program for the jacks established in a predetermined manner or controlled, for example, by a probe placed at the bottom of the chute.
  • the drive member 31 is then controlled so as to subject the blade 27 to a movement in the direction of the arrow f 1 which has the effect of producing a cross section F 1 , illustrated in FIG. 8, of the corresponding side wall of the bag near the lower end of the latter and over substantially half the thickness.
  • the drive member 31, if it is for example a jack, remains in supply so as to maintain the blade 27 in the end-of-cut position, then the jack 25 is controlled to tilt the shaper 22 into the direction of the arrow f 2 .
  • the chute 26 is thus erased from the bottom or from the lower end of the bag 4, so that the emptying takes place by gravity, the products contained in the bag 4 causing the end of the bag to open from the slot F 1 .
  • the actuator 15 When the bag is empty, the actuator 15 is supplied to cause the retraction or erasure of the pins or claws 12, so as to release the empty bag 4 relative to the cover 9.
  • the actuator 6 is then supplied to bring back the chute 3 in the position according to fig. 1 then the jack 20 is controlled to cause the erasure of the claws or pins 18 and then allow the personnel responsible for operating the device to take the empty bag before loading a new full bag 4.
  • the nature of the products contained in the bags 4 does not make it possible to obtain, by simple gravity, a complete emptying and the object of the invention is to remedy this drawback by providing means of forced emptying.
  • These means for forced emptying comprise means for insufflating a pressurized fluid inside the bag 4 during or after emptying by gravity and, preferably, these means for insufflation consist at least of some of the pins 12 of the cover 9.
  • FIG. 3 shows that at least some of the pins 12 are then preferably tubular and have, in their peripheral wall, openings or blowing holes 12a.
  • the tubular pins 12 are, in such a case, extended beyond the frame 13 so as to each form a nozzle 12b for connection with a distribution circuit supplied by a generator of a pressurized fluid, for example air .
  • the feed then intervenes. tion of the pins 12 in pressurized fluid so as to create an insufflation of fluid inside the bag and thus cause a forced flow of the residual content which can be retained, agglomerated or in any other way immobilized inside the bag.
  • the means of forced emptying also involve, as it appears in fig. 1, a blowing nozzle 32 which is arranged inside the container 10, so as to be directed substantially at the level of the slot F 1 of the lower part of the bag.
  • This nozzle 32 is also supplied with pressurized fluid so that the jet which it produces reaches the inside of the tongue 4a resulting from the cut or slot F 1 and normally subjected to folding by the effect of falling by gravity of the products contained in the bag.
  • the bag 4 is made of a material which is all the more difficult to cut at the level of the lower end that the latter has undergone, during closure, one or more folds prior to a seam or a weld.
  • the means for slitting said lower part of the bag are preferably supplemented according to the invention, as can be seen in FIGS. 1 and 6, by a set of longitudinal sections.
  • This assembly comprises two blades 33 arranged parallel to each other and perpendicular to the track 28 while being placed, moreover, opposite the latter relative to the shaping chute 26.
  • the blades 33 are carried by a bar 34 which is subject to a drive member 35 capable of moving it in a direction perpendicular to that of movement of the cross-section assembly.
  • the blades 33 preferably have a triangular shape and have a cutting edge on their base and the inclined side directed towards the track 28.
  • the blades are normally arranged so that the bases are located substantially in the plane of the bottom of the chute 26 which has, for this purpose, clearances 36 extending into the plate 23 to allow the passage of the blades 33.
  • the jack 35 is supplied so as to cause the blades 33 to move in the direction of the arrow f 3 .
  • the blades 33 are thus caused to execute two local, longitudinal slits F 2 in the lower part of the bag near the two angles of the latter so as to soften said angles, as well as the tongue 4a resulting from the slit F 1 .
  • the flow by gravity can take place without a retention zone since the split and insulated parts of the lower end of the bag are flexible enough to be erased by the passage of the released product.
  • the means according to the invention make it possible to achieve a frank and clean cut sand production of waste, products or other from the material of the bag, since the slots F, or F 2 are executed by cutting blades and that the lower part to be split of the bag 4 is just shaped by the profile of the chute 26 without being completely supported by gravity on the latter and, consequently, without forming, at this lower part , a belly effect pronounced by compaction prejudicial to the cutting operation.
  • the bottom 38 of the chute 3 with a double bottom 39 consisting of a plate 40 mounted by spacers 41 parallel to the internal face of said bottom (FIG. 9).
  • the spacers 41 four in number for example, are preferably constituted by elastic blocks, which can be provided on their opposite faces with studs 42, in particular threaded, by which they are fixed to the bottom 39 and the plate 40 (fig. 10).
  • Fig. 9 shows that the bottom 38 of the chute has a window 43 reserved for the passage of a vibrator 37 fixed under the double bottom 38.
  • the vibrator 37 is of the pneumatic type and is protected externally by a cowling 44 attached to the background 39.
  • the double bottom 40 has holes, not shown, for the passage of the pins 18.
  • the chute 3 After placing, as described above, a bag on the plate 40, the chute 3 is brought into its position of cooperation with the cover 17.
  • the bag comes to bear on the shaper 22 and the jacks are supplied to bring out the pins 12 and 18.
  • the knives 27 and 33 cut the bag and the shaper 22 opens the lower part.
  • the emptying by gravity is carried out and is completed by switching on the vibrator 37 which has the effect of causing the film or the layer of product adhering to the walls to slide and flow. and, on the other hand, also the product clumps which can be retained by possible folds.
  • the chute 3 to include temporary suspension means 45.
  • These means shown in FIG. 11 consist of pins 46 carried by a bar 47 fixed at the end of the rod of a jack to double effect 48.
  • the suspension of the jack 48 under the bottom 39 near the edge 3a is ensured by a casing 49 which envelops the pins 46.
  • the casing 49 is, for example, fixed by screws on the bottom 39 which has holes 50 made in coincidence with holes 59 made in the double bottom 39 for the passage of the pins 46.
  • This arrangement is more particularly intended for compieting the emptying of a double-envelope bag, that is to say comprising an outer envelope surrounding a bag containing the product.
  • the double bag is placed on the double bottom 39 while being oriented, in the case where the internal bag has one end forming a ligated collar, so that the collar is directed towards the edge 3a.
  • the jack 48 is supplied to bring the pins through the two envelopes of the bag which is thus immobilized on the double bottom 39.
  • the chute 3 is then brought into the emptying position, as illustrated in FIG. 7.
  • the vibrator 37 is started to cause, first of all, the flow of the product towards the lower part of the bag which is then released by erasing the pins 46.
  • the double bag then slides by gravity and its lower end is received by the shaper 22.
  • the cycle described above takes place starting with the penetration of the pins 12 and 18 and by the operation of the knife 27 brought to simultaneously slice the two thicknesses of the double envelope.
  • the vibrator 37 can be stopped during this phase and restarted after opening the shaper or then be kept running when it is desired to simplify the control programmer.
  • the action of the vibrator makes it possible to perfect the emptying and to reduce to the smallest possible part or mass the residual fraction of product retained by the walls of the bag.

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)
  • Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
  • Adornments (AREA)
  • Knitting Machines (AREA)
EP80420028A 1979-03-05 1980-03-04 Procédé et dispositif pour vider mécaniquement des sacs Expired EP0015861B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80420028T ATE3016T1 (de) 1979-03-05 1980-03-04 Verfahren und vorrichtung zum mechanischen entleeren von saecken.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7906192A FR2450768A1 (fr) 1979-03-05 1979-03-05 Procede et dispositif pour vider mecaniquement des sacs
FR7906192 1979-03-05

Publications (2)

Publication Number Publication Date
EP0015861A1 EP0015861A1 (fr) 1980-09-17
EP0015861B1 true EP0015861B1 (fr) 1983-04-13

Family

ID=9222996

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80420028A Expired EP0015861B1 (fr) 1979-03-05 1980-03-04 Procédé et dispositif pour vider mécaniquement des sacs

Country Status (5)

Country Link
EP (1) EP0015861B1 (es)
AT (1) ATE3016T1 (es)
DE (1) DE3062674D1 (es)
ES (1) ES8200619A1 (es)
FR (1) FR2450768A1 (es)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH654479A5 (de) * 1982-01-28 1986-02-28 Kurt Brandenberger Einrichtung zum entleeren von urinbeuteln.
GB2137393B (en) * 1983-03-29 1986-02-05 Burroughs Corp Autoteller card-handling mechanism
FR2675017B1 (fr) * 1991-04-12 1993-06-25 Fala Ste Indle Levure Dispositif pour l'alimentation en continu et au travers d'un doseur d'un petrin de boulangerie en levure granulee.
DE4135919C2 (de) * 1991-10-31 1994-02-24 Sic Ag Basel Vorrichtung zum Öffnen von festen, eindrückbaren Umhüllungen oder von flexiblen Beuteln
EP2308760A1 (en) * 2009-10-07 2011-04-13 Immobiliare Felloni di Felloni Massimo Disposal assembly, particularly for deformable containers
GB2537407A (en) * 2015-04-16 2016-10-19 Palamatic Ltd Apparatus and method for opening a sealed sack containing particulate material
CN110723374A (zh) * 2019-11-05 2020-01-24 南通大学附属医院 一种腹透废液自动处理装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1247513A (en) * 1967-11-03 1971-09-22 King Ltd Geo W Apparatus for opening and emptying bags of material
NL144214B (nl) * 1969-06-20 1974-12-16 T B M A Europ N V Inrichting voor het openen van een met stortgoed gevulde zak.
FR2367688A1 (fr) * 1976-10-15 1978-05-12 Ribot Robert Procedes et dispositifs pour vider des sacs

Also Published As

Publication number Publication date
DE3062674D1 (en) 1983-05-19
FR2450768A1 (fr) 1980-10-03
ATE3016T1 (de) 1983-04-15
EP0015861A1 (fr) 1980-09-17
ES489221A0 (es) 1981-11-16
ES8200619A1 (es) 1981-11-16
FR2450768B1 (es) 1983-12-09

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