EP0468376A1 - Automatische Maschine zum Befüllen von Säcken - Google Patents

Automatische Maschine zum Befüllen von Säcken Download PDF

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Publication number
EP0468376A1
EP0468376A1 EP91112104A EP91112104A EP0468376A1 EP 0468376 A1 EP0468376 A1 EP 0468376A1 EP 91112104 A EP91112104 A EP 91112104A EP 91112104 A EP91112104 A EP 91112104A EP 0468376 A1 EP0468376 A1 EP 0468376A1
Authority
EP
European Patent Office
Prior art keywords
sack
station
grippers
mouth
fact
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
EP91112104A
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English (en)
French (fr)
Other versions
EP0468376B1 (de
EP0468376B2 (de
Inventor
Natale Vettorato
Eligio Longhi
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.)
BL Macchine Automatiche SpA
Original Assignee
BL Macchine Automatiche SpA
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26326539&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0468376(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from IT12495A external-priority patent/IT1241881B/it
Priority claimed from IT12520A external-priority patent/IT1242223B/it
Application filed by BL Macchine Automatiche SpA filed Critical BL Macchine Automatiche SpA
Publication of EP0468376A1 publication Critical patent/EP0468376A1/de
Publication of EP0468376B1 publication Critical patent/EP0468376B1/de
Application granted granted Critical
Publication of EP0468376B2 publication Critical patent/EP0468376B2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B65B43/00—Forming, feeding, opening or setting-up containers or receptacles in association with packaging
    • B65B43/42—Feeding or positioning bags, boxes, or cartons in the distended, opened, or set-up state; Feeding preformed rigid containers, e.g. tins, capsules, glass tubes, glasses, to the packaging position; Locating containers or receptacles at the filling position; Supporting containers or receptacles during the filling operation
    • B65B43/46—Feeding or positioning bags, boxes, or cartons in the distended, opened, or set-up state; Feeding preformed rigid containers, e.g. tins, capsules, glass tubes, glasses, to the packaging position; Locating containers or receptacles at the filling position; Supporting containers or receptacles during the filling operation using grippers
    • B65B43/465—Feeding or positioning bags, boxes, or cartons in the distended, opened, or set-up state; Feeding preformed rigid containers, e.g. tins, capsules, glass tubes, glasses, to the packaging position; Locating containers or receptacles at the filling position; Supporting containers or receptacles during the filling operation using grippers for bags

Definitions

  • Sack filling machines which comprise:
  • Said stations are arranged after each other along a rectilinear path of travel, are equally spaced apart, and are provided with grippers mounted on a structure which is moved so that, after the operations at the various stations, the mouths of the sacks are simultaneously disengaged from the respective stations by means of a downward displacement, after which the said sacks are moved horizontally and are transferred to the successive station.
  • the mouths of the sacks are then raised and inserted, simultaneously, into the above station so as to be retained thereby.
  • the grippers which have transferred the sacks are then opened, are raised to move away from said sacks, and then are moved horizontally to be returned to the original stations where they are lowered to repeat the cycle described above.
  • the sack filling machine comprises a particular rocking structure mounting the grippers designed to transfer the sacks to the various operating stations.
  • the grippers have been reduced thanks to the omission of the sack-opening station, which has been incorporated in the sack-forming station.
  • the cooling station has been incorporated in the final sealing station.
  • the operating stations arranged after each other are thus reduced to three and the transfer of sacks between them can be effected by only two pairs of grippers.
  • the means for opening the sack have been incorporated in the intermediate filling station, so that said sack can be transferred to said station while still in a flattened and closed condition as when formed, thus reducing the problems.
  • the grippers that transfer the sacks from the filling station to the final sealing and cooling station are fixedly mounted on the rocking supporting structure, since this structure itself moves said grippers towards and away from each other to grip the opened mouth of the filled sacks and to pre- close said mouth by a transverse stretching action, prior to its entrance into the sealing station.
  • This solution has permitted the use of gripper displacing means very sturdy and powerful, capable of operating even with considerably heavy sacks without requiring any oversizing of the gripper-supporting structure.
  • This solution has also permitted to reduce the transverse space requirement of the machine considerably.
  • S1 indicates the station at which a sack is formed cyclically by sealing and cutting operations by the action of opposite devices 1 and 2 which are mounted on parallel opposite carrier assemblies 3-4, movable on stationary guides 5 and connected to a self-centering actuating mechanism 6 of the crank/connecting rod type which, in turn, is connected by a crank 7 to a pair of fluid-operated double-acting jacks 8 by means of which said crank 7 can be moved selectively to the positions A-B-C.
  • Pairs of pressure bars 9 and 10 are mounted, with an intermediate springing system, on the assemblies 3-4, while cooling air dispensing bars 11-11' are arranged on the pressers 9 and directed towards the sealers 1.
  • F indicates the tube of heat-sealable bellows-folded film coming from the powered feeding rollers 12 and inserted, under command, to a suitable extent between the sealing and cutting means 1-2 in the opened position thereof.
  • the actuation is effected of the jacks 8 to move the crank 7 from the position A to the position C.
  • the tube F is acted upon first by the pressure bars 9-10 and then by the sealers 1 and cutting means 2.
  • the sealing is effected of the bottom of a sack which will be completed during the successive working step and the severance is effected therefrom of a sack which has been formed during the preceding step.
  • the cranks of the actuating mechanism 6 are slightly beyond their dead centers and maintain a controlled pre-established pressure against the tube to be sealed, thus granting the quality of the sealing effected by the devices 1.
  • the crank 7 is moved to the position B to move the sealing/cutting means 1-2 away from F, while the pressure bars 9 and 10 are kept closed against the tube and against the sack obtained therefrom.
  • a jet of cool air is issued from the bars 11-11' and is directed against the seal effected by the means 1 in order to cool it and assure the required mechanical strength.
  • the sack Z which has been formed at the station S1 is gripped laterally at its upper portions by a pair of pneumatically operated grippers P1 ( Figures 1-2) which afterwards will transfer it in its closed condition to the intermediate opening/filling station S2.
  • a stronger pair of grippers P2 will seize the side upper portions of the sack that has been filled previously at the station S2 and will transfer it to the final station S3 which effects the top closing seal of the sack and which incorporates the means to cool said seal.
  • the sack is supported by an underlying conveyor 13 of a conventional type, which comprises an initial rocking portion 113 which at the beginning of each step is in its lower position, as shown with solid lines, and which is raised during the filling of a sack in order to better support said sack and ensure a uniform filling thereof.
  • the initial portion 113 of the conveyor can, if desired, submit the sack, during the filling step, if desired, to a slight subsultory movement.
  • the conveyor 13 is of suitable length for discharging the sack after the closing step at the final station S3 and is connected to an actuating unit (not shown).
  • the grippers P1 and P2 are mounted on two horizontal, parallel cradles 14-14', arranged at the same level and directed longitudinally at the sides of the machine.
  • the ends of said cradles are connected - by articulating them on horizontal shafts 15-15' perpendicular to said cradles - to the lower ends of respective pairs of parallel and equal connecting rods 16-16' which are directed upwards and are supported indirectly at their upper ends, so as to be swingable on axes 17-17' parallel to said lower shafts, by the frame T of the machine.
  • the cradles 14-14' form the lower mobile side of two articulated parallelograms which are connected by means of links 18 to a pair of cranks 19 which are keyed on a synchronization shaft 20 which is actuated, for example, by a self-braking geared motor 21.
  • the oscillatory movement of the connecting rods causes the longitudinal reciprocating movement of the cradles 14-14' to transfer the sacks from a station to the successive one and to return to the initial position.
  • Said axes 17-17' are the axes of respective parallel shafts 22 of the type shown in Figure 4, on which said connecting rods are mounted with the interposition of bushes and bearings.
  • These shafts are supported rotatably at the ends thereof by the frame T of the machine, with the interposition of cranks having the same characteristics and so timed whereby said shafts can rotate on respective axes 23-23' which are parallel to and equally spaced from the axes 17-17'.
  • the axes 23-23' are synchronized between each other by a positive drive 24 of any suitable type, e.g. a chain-and-sprocket drive or a toothed pulley and belt drive.
  • a positive drive 24 of any suitable type, e.g. a chain-and-sprocket drive or a toothed pulley and belt drive.
  • One of the axes 23-23' is connected, in turn, by a rigid drive 25, to a self-braking geared motor, not shown.
  • the intermittent rotation of the eccentrics 17-23 and 17'-23' causes the grippers mounted on the cradles 14-14' to move up and down as required for inserting and withdrawing the sacks, respectively, into and from said stations S1-S2-S3.
  • the grippers P1-P2 reach the stations S1-S2 in the opened and raised condition.
  • the grippers will close to seize the sacks at their sides, and then they move down to withdraw the sacks from said stations and then they transfer said sacks from S1 to S2 and from S2 to S3.
  • the grippers move upwards to introduce the sacks into the stations they have reached and after introducing them they open and oscillate to repeat the cycle just described.
  • suitable programming means not shown, for actuating with suitable timing the geared motor 21 and the geared motor connected to the drive 25.
  • H indicates the extent of the upwards and downwards displacement of the grippers, caused by the eccentrics 17-23 and 17'-23'
  • L indicates the extent of the backward and forward displacement of the assembly of grippers by the action of the cranks 19.
  • the cradles 14-14' comprise an intermediate member 114-114' which is connected by means of cylindrical/vertical articulated joints 26-26' to the end portions 214-314 carrying the grippers P1-P2 and the pivots 15-15' to the connecting rods 16-16'.
  • the cradles 14-14' are articulated since the grippers P2 are fixed to the ends 314 of the cradles and are moved towards and away from each other, as required to transfer a sack from the station S2 to the station S3, as a result of a proportional parallel displacement of the connecting rods 16 towards and away from each other, these connecting rods 16 being of sturdier construction than the connecting rods 16' because they must bear stronger stresses.
  • the bushes 27, co-operatively associated with the connecting rods 16 for rotation on the shaft 22, can also move axially on said shaft 22, for example by means of ball-recirculation bearings.
  • a body member 28 mounted centrally on the shaft 22 and prevented from displacing axially, there is a body member 28 having affixed thereto the intermediate portion of a rod 29 which is parallel to the shaft 22 whose end portions slidably support bushes 30 which are secured to the bushes 27.
  • the connecting rods 16 are made solidary with each other in oscillating on the shaft 22.
  • the body member 28 is provided with a depending projection 128 having secured thereto two opposite pneumatic jacks 31-31', of equal characteristics, connected to the connecting rods 16 by means of tierods 131-131'.
  • tierods 131-131' By varying the length of said tierods, the maximum mutual approaching condition of the gripper P2 is adjusted to the dimensions of the sack to be gripped.
  • the maximum spaced apart condition of the grippers P2 is adjusted by means of nuts 132-132' screwed on members 32-32' secured to the body member 28, parallel to the shaft and traversing the abutments 33-33' secured to the bushes 27.
  • the grippers P2 reach the station S2 in the maximum mutually approached condition and in the opened condition. At this station they will be closed to grip the side portions of the sack, after which they will be lowered to withdraw the mouth of the sack from said station. While tranferring the sack from the station S2 to the station S3, the grippers P2 are moved away from each other by such an extent to stretch the mouth of the sack transversely, whereby said mouth will reach the station S3 in an almost closed condition, to be inserted suitably between the sealers at that station.
  • the intermediate station S2 At this station there operates the stationary lower mouth 34 of the product-feeding station, which is closed in a conventional manner by a pair of valve-like doors 35-35' which are hinged to said mouth and which can be moved apart for opening the hopper under the action of pneumatic jacks (not shown).
  • suction heads 36-36' mounted on slides 37-37' which slide on guides 38-38' which are secured to the sides of said mouth 34 and so directed as to permit the movements of the heads 36-36' to and from each other.
  • These movements are effected in a self-centering manner by means of two vertical levers 39-39' which are connected to the slides 37-37' at their slotted lower ends and are interfulcrumed at 40-40' to respective supports secured to the hopper.
  • said levers 39-39' are interconnected at 42-42' so as to obtain a self-centering movement, and one of said levers is connected to an oscillation control member comprising, for example, an angle lever 43 fulcrumed at 40 and connected at the opposite end at 44 to an actuating jack 45 and the slotted arm of which cooperates with a pin 46 at the end of the lever 39.
  • an oscillation control member comprising, for example, an angle lever 43 fulcrumed at 40 and connected at the opposite end at 44 to an actuating jack 45 and the slotted arm of which cooperates with a pin 46 at the end of the lever 39.
  • the heads 36-36' are connected to a suction source through flexible hoses 47-47', while they are connected through additional conduits 48-48' to a safety circuit which controls the vacuum within said heads 36-36' as described below.
  • grippers 49-49' which are directed downwards and such as to operate on the mouth of a sack that is inserted at the station S1.
  • stationary forks 50-50' Arranged between said grippers and the hopper are stationary forks 50-50', also directed downwards and operating as explained below.
  • the grippers 49-49' are opened and the suction heads are spaced away and disactivated, as from Figure 5. It will be noted in Figure 10 that at due time the grippers P1 will position at the station S2 a sack Z coming from the station S1 and supported at the upper side portions thereof by said grippers P1 in their lower position. At the station S2, said grippers P1 are raised to bring the sack to a short distance from the mouth of the hopper, inserting it partially in the forks 50-50'.
  • the suction heads 36-36' are activated and moved towards each other to grip the sack at opposite side portions of its mouth (see also Figure 6), after which the grippers P1 will be opened and wait for the completion of work of the grippers P2 to repeat with them the working cycle.
  • the irregularity is detected by sensors which are connected to the conduits 48-48' and which will act accordingly, for example, by controlling the heads to repeat the sack-seizing operation and by stopping the machine if the irregularity should persist.
  • the grippers P1 While the sack is being filled, the grippers P1 are returned to the station S1 and the grippers P2 are positioned at the station S2 in their opened and approached condition ( Figure 14). At due time, the grippers P2 will close and grip the sack at side upper portions that are not engaged by the stationary grippers 49-49' which will be opened when the hopper 34 is closed (see Figure 15).
  • the grippers P2 are lowered to withdraw the sack from the filling station S2 while the suction heads 36-36' have been neutralized.
  • the grippers P1 insert a new sack Z to be filled into the station S2
  • the grippers P2 transfer the filled sack Z from the station S2 to the sealing station S3, and at due time they will be moved away from each other by the action of the means described with reference to Figure 4, to stretch the mouth of the sack and nearly close it, so as to ensure a correct insertion thereof into the sealing unit at the station S3.
  • the grippers 49-49' at the station S2 are provided at their jaws with a shearing tip 51 and a cavity 52 in line with said tip, to partially shear at 53 the pinched flaps of the mouth of a sack, without removing any material therefrom, to obtain a fastening point for said flaps, which will be thus more suitably prepared for insertion into the final station S3.
  • the outer side portions of the door 35 at the hopper mouth may be provided with suction tubes 54-54' connected to a suction source, which will be introduced into the open regions of the mouth of a sack to subject the latter to a suitable de-pressurization.
  • the station S3 comprises a pair of opposite sealers 55-55' which are mounted together with a pair of underlying opposite spring-loaded pressure bars 56-56', on a conventional structure having a self-centering action, shown diagrammatically at 57.
  • the sealers 55-55' are retracted and the sack will be further supported temporarily by the pressure bars 56-56', which are hollow, perforated and connected to a source (not shown) feeding cool air to the opposite faces of the sealed region so as to cool it.
  • the pressure bars 56-56' are opened so that the filled and sealed sack, no longer supported by the grippers P2, which have released it to effect a new working cycle, is discharged by the conveyor 13.
EP91112104A 1990-07-25 1991-07-19 Automatische Maschine zum Befüllen von Säcken Expired - Lifetime EP0468376B2 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
IT12495A IT1241881B (it) 1990-07-25 1990-07-25 Insaccatrice automatica, rettilinea, a funzionamento intermittente e ad elevata produttivita'.
IT1249590 1990-07-25
IT12520A IT1242223B (it) 1990-10-03 1990-10-03 Insaccatrice automatica, rettilinea, a funzionamento intermittene, di costruzione semplificata, ad ingombro ridotto e ad elevata produttivita'
IT1252090 1990-10-03

Publications (3)

Publication Number Publication Date
EP0468376A1 true EP0468376A1 (de) 1992-01-29
EP0468376B1 EP0468376B1 (de) 1994-11-09
EP0468376B2 EP0468376B2 (de) 1998-01-28

Family

ID=26326539

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91112104A Expired - Lifetime EP0468376B2 (de) 1990-07-25 1991-07-19 Automatische Maschine zum Befüllen von Säcken

Country Status (5)

Country Link
EP (1) EP0468376B2 (de)
AT (1) ATE113915T1 (de)
DE (1) DE69105063T3 (de)
DK (1) DK0468376T3 (de)
ES (1) ES2064014T5 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0860362A3 (de) * 1997-02-19 1998-11-18 Chronos Richardson S.A. Vorrichtung zum Überführen von Beuteln zwischen einer Füllstation und einem Förderer
EP1050457A2 (de) * 1999-05-04 2000-11-08 WindmÀ¶ller & Hölscher Vorrichtung zum Herstellen, Befüllen und Verschliessen von Säcken
EP1050458A1 (de) * 1999-05-04 2000-11-08 WindmÀ¶ller & Hölscher Vorrichtung zum Befüllen und Verschliessen von Säcken
CN114426118A (zh) * 2022-01-15 2022-05-03 燕诚智能设备制造河北有限公司 一种自动吸袋机构及机床
CN115196296A (zh) * 2022-07-06 2022-10-18 青岛宝佳智能装备股份有限公司 一种转包翻包运送机构

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2156697B1 (es) * 1999-01-22 2002-02-01 Payper Sa Perfeccionamientos en maquinas autonomas de ensacado.
DE19933486C2 (de) * 1999-05-04 2001-06-13 Windmoeller & Hoelscher Vorrichtung zum Befüllen und Verschließen von Säcken
DE19936660C2 (de) * 1999-05-04 2002-10-24 Windmoeller & Hoelscher Vorrichtung zum Herstellen, Befüllen und Verschließen von Säcken
DE19920478C2 (de) * 1999-05-04 2001-05-03 Windmoeller & Hoelscher Vorrichtung zum Herstellen und vorzugsweise auch zum Befüllen und Verschließen von Säcken aus thermoplastischem Kunststoff
ES2257180B1 (es) * 2004-10-13 2007-08-16 Volpak, S.A. Dispositivo de transporte de envases.

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2324514A1 (fr) * 1974-01-11 1977-04-15 Ok Tekhnolog Installation d'empaquetage de produits a ensacher
DE2634754B1 (de) * 1976-08-02 1977-12-01 Behn Verpackung Erwin Fuelleinrichtung fuer Saecke

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2324514A1 (fr) * 1974-01-11 1977-04-15 Ok Tekhnolog Installation d'empaquetage de produits a ensacher
DE2634754B1 (de) * 1976-08-02 1977-12-01 Behn Verpackung Erwin Fuelleinrichtung fuer Saecke

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0860362A3 (de) * 1997-02-19 1998-11-18 Chronos Richardson S.A. Vorrichtung zum Überführen von Beuteln zwischen einer Füllstation und einem Förderer
EP1050457A2 (de) * 1999-05-04 2000-11-08 WindmÀ¶ller & Hölscher Vorrichtung zum Herstellen, Befüllen und Verschliessen von Säcken
EP1050458A1 (de) * 1999-05-04 2000-11-08 WindmÀ¶ller & Hölscher Vorrichtung zum Befüllen und Verschliessen von Säcken
EP1050457A3 (de) * 1999-05-04 2003-05-14 WindmÀ¶ller & Hölscher Vorrichtung zum Herstellen, Befüllen und Verschliessen von Säcken
CN114426118A (zh) * 2022-01-15 2022-05-03 燕诚智能设备制造河北有限公司 一种自动吸袋机构及机床
CN115196296A (zh) * 2022-07-06 2022-10-18 青岛宝佳智能装备股份有限公司 一种转包翻包运送机构

Also Published As

Publication number Publication date
DK0468376T3 (da) 1995-04-24
EP0468376B1 (de) 1994-11-09
ATE113915T1 (de) 1994-11-15
ES2064014T5 (es) 1998-05-01
DE69105063T2 (de) 1995-05-24
DE69105063T3 (de) 1998-07-23
DE69105063D1 (de) 1994-12-15
EP0468376B2 (de) 1998-01-28
ES2064014T3 (es) 1995-01-16

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