EP0844175B1 - Machine autonome d'ensachage - Google Patents

Machine autonome d'ensachage Download PDF

Info

Publication number
EP0844175B1
EP0844175B1 EP97918163A EP97918163A EP0844175B1 EP 0844175 B1 EP0844175 B1 EP 0844175B1 EP 97918163 A EP97918163 A EP 97918163A EP 97918163 A EP97918163 A EP 97918163A EP 0844175 B1 EP0844175 B1 EP 0844175B1
Authority
EP
European Patent Office
Prior art keywords
sack
station
autonomous
machine
welding
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 - Lifetime
Application number
EP97918163A
Other languages
German (de)
English (en)
Other versions
EP0844175A1 (fr
Inventor
Manuel Payper S.A. PADULLES BAUTISTA
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.)
Payper SA
Original Assignee
Payper 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 ES9601034A external-priority patent/ES2130936B1/es
Priority claimed from ES9601028A external-priority patent/ES2130042B1/es
Priority claimed from ES9601030A external-priority patent/ES2131441B1/es
Application filed by Payper SA filed Critical Payper SA
Publication of EP0844175A1 publication Critical patent/EP0844175A1/fr
Application granted granted Critical
Publication of EP0844175B1 publication Critical patent/EP0844175B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B1/02—Machines characterised by the incorporation of means for making the containers or receptacles
    • 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

  • the present invention deals with the field of autonomous sacking machines, capable of forming, filling and sealing the sacks, and the invention focuses in particular on a number of improvements with which the performance of machines of this kind is successfully enhanced, concurrently improving their functionality.
  • Machines to which the invention applies are of the kind designed for sacking both granular and powdered products in bulk, namely for instance cattle feed, fertilisers, plastic chaff for industrial processes, ceramic enamels, etc.
  • sacking machines in which the raw material used is a plastic heat-weldable tubular body of unlimited length supplied in a roll, with side folds or bellows, in which three operative means are basically established, a sack forming means, which suitably fragments the continuous roll and concurrently provides a seal at the bottom end of each unit or sack, a filling mechanism which supplies each sack with the relevant quantity of the product at issue, and a sealing mechanism which suitably seals the sack, on being filled as aforesaid, ready to be shipped or stored.
  • German patent DE-4,314,711 discloses a filling and sealing device for sacks previously formed from a continuous roll or band, wherein each sack or unit is gripped at an area close to its mouth by means of clamps that overturn the sack 90°, open and position it beneath the filling mechanism, after which the sack is again overturned 90° and taken to a sealing station, which lies above a conveyor belt, where the sack is deposited, now sealed, standing perfectly upright, to prevent the possibility of the sack from brusquely swaying laterally, upon hitting the conveyor belt, and causing it to be opened through the recently established and still warm weld.
  • US patent 4,510,736, according to the preamble of claim 1, shows another machine of this kind, noteworthy therein being a first sack bottom carrying stage, in which propelling nozzles are used, a sack filling stage and a sack sealing stage, in accordance with the general basic outline referred to before.
  • the sacks must also in this case be placed standing fully upright in order for the sealing weld not to suffer and be damaged due to the actual pressure exerted by the product.
  • German patent 2,614,270 discloses a sack filling machine, especially devised for a particular case in which the sacks are rather wide, the purpose being likewise for the sacks to be held upright.
  • This case also provides for the aforesaid basic stages, namely filling the sack or bag and sealing the same, cooling the weld, and is particular also in that a mechanical pusher is positioned beneath the filling stage to compact the sack contents.
  • European patent EP 0 516 979 describes a process for making, filling and sealing sacks which consequently includes the three basic functional stages which are the common denominator of most machines of this kind, referred to hereinbefore, but the working of the process according to this patent requires the use of highly complex mechanisms which adversely affect both the cost of the machine and its subsequent maintenance.
  • sacks of the kind referred to before obtained from a continuous tubular band with side bellows or folds pose a sealing problem at both their bottom and top ends, namely that the respective cross-welds, which affect only the two walls of the sack at an intermediate, larger sector of the sack, then brusquely affect, at its ends, the four walls that provide the folds or bellows of the side walls, three stretches being thus established over each weld line aforesaid, namely an intermediate and two end stretches, the thickness of the end stretches being twice that of the intermediate one, thereby providing weak points for such weld, at the points at which said three sectors are interconnected.
  • each bellows are known to be fixed to the respective side walls of the sacks, at its end areas, by means of welds affecting small triangular areas.
  • the solutions used to date for obtaining such welds are however either structurally very complex or adversely affect machine productivity, increasing the time of each of its operative cycles.
  • the machine in order to attain a high production, of some 1200 sacks/hour, the machine has up to 3 seconds available for each of its different operative phases.
  • the required time is 2.7 seconds, which is clearly less than the available time.
  • a pre-opening operation of the sack takes place at this intermediate station with the assistance of a clamp having suction pads, thereby for the potential initial opening difficulty the sack may pose due to the residual effects of the cutting operation, to be overridden at this intermediate station, the sack being opened at the subsequent filling station almost instantaneously, a crosswise displacement of the clamps holding the sack towards each other expediting such operation, together with the set of suction pads provided at such filling station.
  • the carriage transferring the sacks between the various stations making up the machine is U-shape in plan, with side branches pointing towards the machine outlet, thereby to provide a fully diaphanous space throughout the sack transfer area, for the side clamps fixing the sacks only project into the side branches of the carriage when they clamp down on the sacks.
  • the said carriage has three sets of clamps, the two end sets of which are rigidly connected to said carriage, whereas the intermediate set is mounted through guides and with a floating type motion specifically by means of two side pneumatic cylinders, that work as mere resilient elements assisted by a stop locked to the machine bed, advantageously facing the filling station, and therefore as opposed to the fixed run of the carriage, which defines a similarly fixed run for the end clamps, between the forming station and the intermediate station, on the one hand, and between the filling station and the sealing station, on the other, the run between the intermediate station and the filling station is much shorter in order that the filling operation may begin beforehand, i.e. making a better use of the space available in each cycle.
  • a compacting element is established beneath the filling station, associated to the frame supporting the ejection conveyor belt, tamping the base of the sack to improve its filling conditions.
  • an approach sensor is provided for such welding clamp to allow the absence of a sack, the existence of a crease at the mouth of the sack, the existence of product waste at said mouth impairing sealing, or any other fault whatsoever which may be detected by an unusual dimension of the thickness of the mouth of the sack, to be detected.
  • a cooling device centring the continuous band is arranged at the outlet from a corner welding mechanism.
  • the welding mechanism is structured with two heads capable of adjusting their distance from each other in order to suit it to different sack widths, each of the heads having a dolly-like weld guide plate designed to be housed in the respective fold or bellows of the continuous tubular band, reaching up to the bottom of such bellows, in order to duly free all its sectors, whilst the clamps of the welding grip are established on either side of this guide plate, to be clamped down after each unit displacement of the continuous tubular band against the intermediate guide plate, causing the marginal areas of the bottom end of a sack and the top end of the next immediate sack to be welded simultaneously, specifically by means of a single trapezoidal weld, which will be fragmented along its middle line at the subsequent sack forming station, one of its halves becoming part of one sack and the other half part of the next sack, as aforesaid.
  • clamp-down of these welding clamps at each welding stage as such, can be effected by any suitable conventional means, such as pneumatic pistons for instance, to which end the arms of each clamp will be mounted to move crosswise on the respective head, moving in synchrony towards or away from the intermediate guide plate.
  • the machine also provides a forming means or unit which resolves a number of problems resulting from conventional machines of this kind referred to in the prior art section.
  • the forming unit subject hereof is structured with a pair of tangent rollers, one being an entraining roller and the other a press roller, the first of which is driven by a gearmotor and through an encoder which allows its turning movement to be controlled at will, to define a dimensionally accurate entrainment of the continuous tubular band in accordance with the size of the sack to be obtained, whereas the press roller is pivotally mounted on end arms and is manually separable from the entraining roller with the assistance of an eccentric that may in turn be driven by a lever.
  • the chassis supporting these entraining and press rollers is at the same time the supporting means for a pair of pivoting bracings, each supporting the respective welding and cutting mechanisms, both bracings being driven in synchrony and in opposition to each other by means of respective connecting rods, through an eccentric that is in turn driven by means of a pneumatic cylinder, thereby for driving of the piston of said cylinder in a particular direction to cause the welding and cutting grips to move towards each other, whereas movement in the opposite direction causing them to be separated.
  • a deflector plate is established directing the bottom sealed end of the sack towards a pair of blowing nozzles, extending to match the height of the sack, one being fixed, although it may be positionally adjusted, and the other being pivotable to approach the first nozzle, upon being driven by a pneumatic cylinder, and therefore once the weld at the bottom end of a sack has been established level with the blowing nozzles, the latter approach each other exercising their cooling action on both faces of the sack, rendering its weld rapidly consistent upon being cooled.
  • the length of said blowing nozzles has been provided to be suitable to the maximum expected width of said sacks, and for the blowing mechanism in turn to be altogether adjustable in height, in order to suit the position of such blowing nozzles to the height of each type of sack.
  • the support of said blowing nozzles is mounted on the machine chassis through vertical guides, and has a spindle or similar transmission means to be lifted/lowered, driven from a wheel, through a belt or other suitable driving means, and thus upon said wheel being hand-driven, the working level of the blowing nozzles may be established, as aforesaid, to suit any sack size.
  • Figure 1.- Is a schematic side elevation representation of an autonomous sacking machine, shown with the carriage in the limiting retreated position.
  • Figure 2.- Is a schematic plan representation of the unit shown in the preceding figure.
  • Figure 3.- Is a representation similar to that of figure 1, at an initial forward phase of the sack transfer carriage.
  • Figure 4.- Is a plan view of the unit shown in the preceding figure.
  • Figure 5.- Is a representation similar to that of figure 1, yet again of the same unit of said figure in the limiting forward position of the transfer carriage.
  • Figure 6.- Is a plan view of the unit shown in the preceding figure.
  • Figure 7.- Is a view similar to that of figure 1 with the carriage retreated, i.e. in a phase returning to the position of said figure 1 to complete the operative cycle of the machine.
  • Figure 8.- Is a plan view of the unit shown in the preceding figure.
  • Figure 9.- Is a schematic sectional representation of the machine, at the filling station level.
  • Figures 10 and 11.- are two perspective close-views of the machine, facilitating the understanding of the general construction of the machine.
  • Figure 12.- Is a schematic side elevation representation of the same autonomous sacking machine fitted with a sack reinforcement welding mechanism.
  • Figure 13 Is a partial schematic plan representation of the continuous tubular band constituting the sack forming raw material, with the tubular band leaving the welding mechanism shown in the preceding figure.
  • Figure 15.- Is a plan view thereof.
  • Figure 16.- Is a perspective view of the same welding mechanism, duly coupled to a sacking machine, represented only partially.
  • Figure 17.- Is a schematic side elevation representation of a sack forming unit for sacking machines.
  • Figure 18.- Is a plan view of the unit shown in the preceding figure.
  • Figure 20.- Is a side elevation view of the cooler assisting the former as such shown in the preceding three figures.
  • Figure 21.- Is a front elevation and sectional view of the unit of the preceding figure.
  • an autonomous sacking machine can be seen to be based upon a sack forming station (1), an intermediate or hold station (2), a filling station (3) and a sealing station (4).
  • the continuous tubular band (5) is fragmented at regular intervals, in accordance with the expected height of the sacks, and welded to seal the bottom of such sacks, by means of a pair of welding and cutting heads (6) beneath which lie a first pair of support clamps (7) for the already formed sack (8), which pair of clamps (7) is mounted fixed on a carriage (9) responsible for transferring the sacks (8) from the forming station (1) to the intermediate (2), filling (3) and sealing (4) stations.
  • the pair of clamps (14) with which transfer is effected from the intermediate station (2) to the filling station (3) is mounted to slide on guides along the carriage (9) with a floating nature, particularly associated to the rod (15) of a pneumatic cylinder (16), which acts as a spring or resilient element to enable free displacement of the carriage (9) once the pair of clamps (14) has come to face the filling station (13), in a limiting position defined by a stop (17) upon which each pair of clamps (14) abuts in their travel, and which consequently lies operatively facing the filling station (3), as shown particularly in figure 3.
  • the intermediate or hold station (2) is not only designed to substantially shorten the run the sack (8) must complete in each operative cycle, in moving forward to the filling station (3), but further facilitates opening of the mouth of the sack (8), to which end said intermediate or hold station (2) is not only assisted by a pair of floating grips (14), but has a clamp (18) drivable by a pneumatic cylinder (19) and provided with suction pads (20) that act on the sack walls, at its mouth level, to open it before it is definitely opened at the filling station (3) by the suction pads (21) present at such station.
  • the grips (14) which transfer the sack to the filling station (3) are complemented at the height of the filling stage with further grips (29) associated to the filling mouth and capable of moving crosswise, driven by respective pneumatic cylinders, thereby to move towards each other and together with the suction pads (21) effect an optimum opening of the mouth of the sack (8) and consequently provide optimum sack filling conditions.
  • Improvement of the sack (8) filling conditions is also expedited by a compacting element (22) lying beneath the sack (8) in the vertical position of the filling station (3), which tamps the base of the sack to achieve the repeatedly mentioned compacting effect.
  • the compacting element (22) is positionally adjustable for its height to be suited to the dimensions of each type of sack (8), which adjustment is made simultaneously in regard to the ejection belt (23), to which end both elements are mounted on a common chassis.
  • the mobile arm (24) of the welding clamp (25), driven by the respective, classic cylinder (26), has a rear extension (27) designed to act on an approach sensor (28), as shown specifically in figure 5, thereby for said sensor (28) to precisely detect the distance of the welding clamp (25), which must match the thickness of the mouth of the sack and which, as aforesaid, allows a faulty feeding of sacks to be detected, due to the absence of a sack, a crease at the mouth of the sack resulting in a faulty sealing thereof, or any other fault whatsoever which may be detected by reason of a different thickness of the mouth of the sack with respect to the respective pre-set dimension.
  • figures 1 and 2 show the zero point, from which each operative cycle of the machine begins, in which a sack (8) lies at the sack forming station (1), a second sack (8) lies at the intermediate station (2), a third sack (8) lies at the filling station (3) and a fourth sack lies at the sealing station (4), whereas other sacks are already fully sealed on the ejection conveyor belt (23).
  • the carriage (9) moves forward entraining the first of the above-mentioned sacks towards the intermediate or hold station (1), whereas a new sack is formed at the forming station (1), the second sack being directed towards the filling station (3), its bottom or lower end impinging upon the compacting element (22), the bottom being bent inwards to prevent the product from accessing the bottom corners of the sack, improving its conformation at the filling stage, whereas the third sack, which was already full, passes on to the sealing station (4), and the fourth and last sack, located at said sealing station, is entrained by the conveyor belt (23).
  • the intermediate station (2) is at a pre-opening phase of the mouth of the respective sack, the filling station (3) fills the sack, which shall have begun beforehand due to the shorter run required for such sack between the intermediate station (2) and the filling station (3), and the last sack (8) is sealed at the last station (4).
  • the clamps (7), (13) and (14) are then all opened simultaneously and the carriage (9) returns to the initial position, shown in figure 1, to begin a new operative cycle.
  • FIG 12 An autonomous sacking machine in accordance with the invention is shown in figure 12, the machine also includes a sack reinforcement welding mechanism, which mechanism is shown in figures 12 and 16 both as a whole and in close view, the reference numeral of the welding mechanism being generally (30), the mechanism being applicable as aforesaid to an autonomous sacking machine using a continuous tubular band in the form of a roll (31) as the raw material, supplied by a feeder comprising a pair of supporting arms (32), pivoting with the assistance of cylinders (4), to expedite the roll (31) loading and lifting operation, a drive roller (34) being established above the roll, assisted by a respective gearmotor (35), to unroll said continuous tubular band, to which end the roller (34) is also mounted on a pivoting arm (36) assisted by another cylinder (37).
  • a sack reinforcement welding mechanism which mechanism is shown in figures 12 and 16 both as a whole and in close view
  • the reference numeral of the welding mechanism being generally (30)
  • the mechanism being applicable as aforesaid to
  • the roll (31) supplies the continuous band to a feed station (38) from which said band passes to the welding mechanism (30), and from there on to a station (39) at which the weld is cooled and the sack forming sheet is centred, said station (39) comprising a number of rollers which establish a winding path to facilitate the two functions aforesaid, namely on the one hand cooling of the weld and on the other centring of the sheet, the band then passing to the sack forming station (1) at which the continuous band fragmentation and bottom end sack sealing operations are effected, a carriage (9) being located under this forming station (1) to sequentially transfer the sacks (8) to the sack filling station (2) and finally a sack sealing station, from which the sacks are ejected, as explained above.
  • the welding mechanism (30) comprises a chassis (40) designed to be locked to the machine frame, the chassis (40) having a double spindle (41) locked to it, i.e. the spindle having two counter-threaded sectors, on which respective nuts (42) are mounted which, upon acting manually on a wheel (43) lying at one of the ends of the double spindle (41), move towards or away from each other, depending on the direction in which said wheel (43) is turned.
  • a support (44) is locked to each nut (42) with a head (45) in turn locked to such support, the mechanism thereby having two heads (45) duly opposing one another, each having a fixed dolly-like guide plate (46) at a middle level, both guide plates being coplanar as shown in figure 15, the plates being designed to be respectively housed in the side bellows of the continuous tubular band from which the sacks are to be obtained, acting as separators during the bellows welding phase, which is carried out with the assistance, at each head (45), of a clamp (47) provided with electric heating resistors (48) shaped as an isosceles trapezium, which are mounted to slide crosswise on the respective head (45) and may choke the marginal area of the continuous tubular band against the intermediate guide plate (46) during the welding phase, or be separated to allow the free passage of said band up to a new working area thereon.
  • Two slotted plates (49) are provided as side guide plates for the welding heads to cross, used as guide elements and to prevent the actual welding heads from
  • welding areas (51) are established at each of the ends of this imaginary line (50), with the same trapezoidal configuration as the electric heating resistors (48), and therefore each of these welding areas (51) will be split into two once the sacks have been rendered independent and formed, one of the two halves belonging to the bottom of a sack, whereas the other half will be the mouth of the other.
  • the machine also includes a sack forming mechanism or unit, comprising an entraining roller (52) assisted by a press roller (53), the drive roller (52) receiving through a drive belt (54) or other similar element a motion generated by a motor (55), with the respective reducer, the motor being controlled by an encoder which allows the turning movement of the entraining roller (52) to be adjusted and consequently the quantity of continuous tubular band constituting the raw material for obtaining the sacks at will and full accurately, the latter being entrained at each respective operative sack forming cycle.
  • a sack forming mechanism or unit comprising an entraining roller (52) assisted by a press roller (53), the drive roller (52) receiving through a drive belt (54) or other similar element a motion generated by a motor (55), with the respective reducer, the motor being controlled by an encoder which allows the turning movement of the entraining roller (52) to be adjusted and consequently the quantity of continuous tubular band constituting the raw material for obtaining the sacks at will and full accurately, the latter being
  • the press roller (53) is established between a pair of pivoting arms (56) mounted upon a pivoting axis (57), the arms (56) being laterally displaceable to separate the press roller (53) as required from the drive roller (52) at the first continuous tubular band coupling operation, by means of an eccentric (59) that may in turn be manually driven by a small lever (59) located at the front of the machine.
  • the chassis (60) supporting the rollers (52) and (53) acts as a support (61) for a funnel (62) suitably channelling the continuous tubular band towards the band cutting and welding area, the funnel (62) being obviously located in the vertical position of the tangent plane between both rollers (52) and (53).
  • bracings (64) Pivotally connected to the chassis (60) through top axes (63) are a pair of bracings (64) enclosing the rollers (52) and (53) and the funnel (62), each of the bracings (64) being fitted at its lower end with a tamper (65) acting on the respective side of the sack, an electrowelding head which had reference numeral (6) in figure 1, one being fitted with a cutter (66) and the other with a dolly (67), and therefore when the bracings (64) close upon each other, the first to act are the tampers (65), suitably fixing the continuous tubular band, and then the cutter (66) acts to render independent the bag sealed in the preceding operative cycle of the mechanism, the electrowelding heads (6) then acting to seal the next immediate bag or sack.
  • the pivoting movement of the bracings (64) is achieved with a preferably pneumatic cylinder (68) acting on an eccentric (69) having two radial appendices (70) and (71) to which two connecting rods (72) and (73) are articulated to act simultaneously and in opposition to each other on said pivoting bracings (64), to provide the movements to or away from each other.
  • the sealing weld of the immediately preceding sack i.e. the sack that is being cut off, is being consolidated at a lower level, to which end the lower area is provided with the mechanism shown in figures 20 to 22, comprising a deflector plate (74) directing a pair of blowing nozzles (75-75'), both of which are positionally adjustable, towards the bottom end of each sack, the first lying fixed at the bottom end of the deflector plate (75) whereas the second one (75') lies at a substantial distance from the first one, mounted on an arm (76) which pivots about its midpoint (67) and receives at its end opposite the actual nozzle (75') the drive of a pneumatic cylinder (78) with which the nozzle (75') is drawn close to the nozzle (75), once the bottom of the sack has reached the blowing area.
  • a deflector plate (74) directing a pair of blowing nozzles (75-75'), both of which are positionally adjustable, towards the bottom end of each sack
  • these nozzles (75-75') are provided with a longitudinal groove (79) for the passage of air, from which a number of outlets (80) project which are duly directed towards the sack weld.
  • the support (81) of the structure is mounted to move vertically on guides (82) duly locked to a chassis (83), which could be the actual chassis (60) of the machine, the support (81) being further assisted by a spindle (84) the free end of which receives, through a pulley (85) or the like, with the assistance of the respective belt (86), the movement of the pulley (87) of a wheel (88) also established on the actual chassis (83), thereby upon actuating the wheel (88) in either direction, for the spindle (84) to lift or lower the support (81) and consequently suit the deflector plate (74) and the blowing nozzles (75-75') to the level at which the bottom end of the sack is arranged, at which it is welded, depending on the intended length of the sack.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Package Closures (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)

Claims (17)

  1. Machine autonome d'ensachage utilisant comme matière première une bande tubulaire continue qui dispose de plis ou de soufflets latéraux pour la réalisation des sachets et qui est dotée de :
    Un mécanisme de soudure de renfort des coins du sachet ;
    Une station de formation du sachet (1), située après le mécanisme (30) de soudure de renfort des coins du sachet, comprenant une unité spéciale de façonnage conçue pour coudre la bande tubulaire continue à partir de laquelle les sachets sont fabriqués et obtenir une fermeture par soudure à l'extrémité du fond de chaque sachet ;
    Une station intermédiaire d'attente (2) située à une première distance de la station de façonnage des sachets (1) ;
    Une station de remplissage des sachets (3) séparée de la station de façonnage des sachets (1) par la station intermédiaire d'attente (2) ;
    Une station de fermeture (4) située exactement à la première distance citée depuis la station de remplissage (3), après laquelle les sacs pleins et scellés sont expulsés par une courroie (bande) transporteuse ; et
    Un chariot avec un mouvement de va-et-vient (9) situé au-dessous du niveau auquel se trouvent placées les stations et qui transfère par intermittence les sachets d'une station à l'autre.
       Caractérisée car ladite station intermédiaire est située loin de ladite station de remplissage (3) à une deuxième distance considérablement inférieure à la première distance afin de réduire la durée de transport des sachets vers la station de remplissage pour que la machine consacre plus de temps de chaque cycle à l'opération réelle de remplissage.
  2. Machine autonome d'ensachage, selon 1ère revendication, caractérisée car le chariot (9) qui réalise le transfert des sacs (8) entre les différentes stations (1), (2), (3) et (4) dispose d'une paire de mâchoires (7) fixes pour le transfert de chaque sachet (8) depuis la station de formation des sacs (1) à la station intermédiaire (2) et d'une autre paire de mâchoires fixe (13) pour le transfert des sacs (8) depuis la station de remplissage (3) à la station de fermeture (4) et d'une paire de mâchoires (14) flottantes et guidées pour le transfert des sacs (8) depuis la station intermédiaire ou d'attente (2) à la station de remplissage (3), ces pinces ou mâchoires (14) étant associées à un cylindre pneumatique (16), servant d'élément élastique de soutien de ces pinces, aidées par une butée (17) située à la verticale de la station de remplissage (3) de sorte que pendant la phase intermédiaire du mouvement d'avancement du chariot (9), avant que ce dernier n'arrive au terme de son parcours et lorsque les mâchoires mobiles (14) se trouvent en face de la station de remplissage (3), ces mâchoires s'arrêtent contre la tension élastique du cylindre (16), permettant ainsi le démarrage immédiat de la phase de remplissage.
  3. Machine autonome d'ensachage, selon 1ère revendication, caractérisée car dans la station intermédiaire ou d'attente (2) est établie une pince (18) pourvue de ventouses (20) qui réalisent dans cette station intermédiaire (2) une phase de pré-ouverture de l'embouchure du sachet (8), avant son ouverture définitive, à la station de remplissage (3) par les ventouses (21) de cette station, ayant de plus été prévu qu'en correspondance avec la station de remplissage, les deux mâchoires (29) susceptibles de déplacement transversal soient disposées associées dans le sens d'approche pour faciliter la manoeuvre d'ouverture du sachet (8).
  4. Machine autonome d'ensachage, selon revendications précédentes, caractérisée car le chariot (9) de transfert adopte une forme en U, dont les branches latérales sont orientées vers la sortie de la machine, à savoir, vers le transporteur à bande d'évacuation (23) de sorte que ce chariot laisse entièrement libre l'espace où se situent et sont transférés les sachets (8), de la station de formation (1) à la station de fermeture (4).
  5. Machine autonome d'ensachage, selon revendications précédentes, caractérisée car à la verticale de la station de remplissage (3) et au niveau inférieur, est établi un élément compacteur (22) sur lequel repose l'extrémité inférieure du sachet (8) avant et pendant son remplissage, et qui vient frapper la base de ce sachet (8) pour améliorer les conditions de remplissage.
  6. Machine autonome d'ensachage, selon 1ère revendication, caractérisée car la station de fermeture (4) dispose, concrètement sur le bras basculant (24) d'une pince de soudure (25), dotée d'une prolongation postérieure (27) destinée à agir sur un senseur d'approche (28) permettant de détecter toute anomalie sur la station provoquée par un niveau d'approche entre les têtes de soudure (25) différent de celui préétabli, soit en raison de l'absence de sachet, d'un pli indésirable de son embouchure, soit pour toute autre raison.
  7. Machine autonome d'ensachage, selon 1ère revendication, caractérisée car le mécanisme de soudure pour le renforcement des sachets est composé d'un châssis (40) destiné à être solidaire du bâti de la machine, châssis (40) auquel est solidaire une double broche (41) et deux secteurs coaxiaux à filetages opposés sur lesquels sont montés des écrous (42) qui s'approchent ou se séparent en fonction du sens de rotation donné à la broche (41) par un volant (43) à commande manuelle ou par tout autre dispositif de commande approprié, étant solidaires aux écrous (42) supports respectifs (44) pour les deux têtes (45), opposées, sur chacun desquels participe une tôle de guidage (46) qui agit comme un support du mécanisme de soudure, intermédiaire, destinée à s'accoupler au pli ou soufflet latéral correspondant à la bande tubulaire continue constituant le sachet et chaque tôle de guidage de support (46) restant encadrée par les bras d'une pince de soudure, qui se déplacent en synchronisation et par tout dispositif approprié, dans le sens d'approche ou de séparation par rapport à la tôle de guidage intermédiaire et fixe, constitué principalement des deux tôles de guidage latérales (49) pourvues d'un orifice à travers lequel les pinces de soudure pénètrent.
  8. Machine autonome d'ensachage, selon 7ème revendication, caractérisée car le mécanisme de soudure (30) pour le renforcement des sachets est situé en correspondance avec la station de formation des sachets (1) de sorte que ce mécanisme agit sur la bande tubulaire continue (5), avant que celle-ci ne soit fractionnée en segments correspondant aux sachets respectifs, s'agissant d'une étape postérieure à l'équipement de soudure et avant d entrer dans l'étape de formation du sachet suivie d'une étape (39) où la soudure produite est refroidie et la feuille est centrée sur son développement, cette étape étant formée d'un chemin sinueux obtenu par le passage de ladite feuille à travers des rouleaux.
  9. Machine autonome d'ensachage, selon 7ème et 8ème revendications, caractérisée car les pinces de soudure (48) adoptent une configuration trapézoïdale et agissent sur la bande tubulaire continue (5) en correspondance avec les lignes transversales imaginaires (50) sur lesquelles se produira la fragmentation par tranchage de cette bande les soudures (51) étant situées aux extrémités de ces lignes (50), chaque soudure ayant une configuration trapézoïdale et donnant naissance après le passage de la bande tubulaire continu (5) par la station de formation de sachets (1) à deux soudures triangulaires, l'une pour l'embouchure d'un sachet et l'autre pour le fond du sachet suivant immédiatement.
  10. Machine autonome d'ensachage, selon 7ème, 8ème et 9ème revendications caractérisée car le mécanisme de soudure pour le renforcement des sachets est de longueur réduite, permettant ainsi que l'entrée et la sortie de la feuille de cette étape se réalise par simple introduction manuelle.
  11. Machine autonome d'ensachage, selon 1ère revendication, caractérisée car le groupe de formation des sachets est constitué à partir d'un rouleau d'entraínement (52) et d'un rouleau de pressions (53), où le premier reçoit le mouvement d'un groupe motoréducteur (55) à travers une transmission adéquate et contrôlé par un encoder permettant d'adapter l'ampleur de ce mouvement à la longueur spécifique de chaque type de sachet, tandis que le rouleau de pression est suspendu d'un couple de bras basculants (56) et est séparable du rouleau d'entraínement (52) pour accouplement initial de la bande tubulaire continue (5) par une excentrique (58) agissant directement sur au moins un des bras (56) et à laquelle est solidaire un levier de commande manuelle (59).
  12. Machine autonome d'ensachage, selon 11ème revendication, caractérisée car au châssis supportant les rouleaux d'entraínement (52) et de pression (53), sont associées deux armatures (64) articulées qui encadrent aussi bien lesdits rouleaux qu'un entonnoir (62) de canalisation descendante de la bande tubulaire continue (5), ces armures basculantes, à travers leur extrémité inférieure, constituant le dispositif de support mobile pour la lame de tranchage de la bande tubulaire continue, prévue sur ses têtes de soudure (6) ainsi que pour un couple de masses (65) stabilisant convenablement cette bande tubulaire continue (5) pendant la phase de tranchage et de soudure.
  13. Machine autonome d'ensachage, selon 11ème et 12ème revendications, caractérisée car les armatures basculantes (64) supportant les mécanismes de tranchage et de soudure, sont actionnées simultanément et en opposition par un cylindre (68), pneumatique de préférence, agissant sur une excentrique (69) pourvue d'un couple de prolongations radiales (70) et (71), opposées, auxquelles sont associées et articulées les bielles (72) et (73) qui relient cette excentrique avec les armatures basculantes (64) de sorte que le basculement dans un sens de l'excentrique (69) provoque l'approche des armatures (64) et leur basculement dans le sens contraire à leur séparation.
  14. Machine autonome d'ensachage, selon 11ème revendication, caractérisée car à la verticale de l'entonnoir (62) de guidage pour la bande tubulaire continue (5) et au niveau inférieur de la machine, est établie une plaque de déflexion (74) conduisant l'extrémité inférieure du sachet vers un couple de buses de soufflage (75-75'), l'une fixe et l'autre basculante, pouvant adopter une distanciation accusée pour laisser libre passage à l'extrémité inférieure du sachet, et une position ultérieure de rapprochement pendant la phase de soufflage de sa soudure.
  15. Machine autonome d'ensachage, selon 14ème revendication, caractérisée car lesdites buses de soufflage (75-75') sont à positionnement réglable et car la buse basculante (75') est actionnable par un cylindre pneumatique (78).
  16. Machine autonome d'ensachage, selon 14ème revendication, caractérisée car chaque buse de soufflage (75-75') dispose d'un conduit longitudinal (79) d'insufflation d'air, d'où il émerge une pluralité de sorties ou de buses proprement dites (80) orientées vers la ligne de soudure fermant inférieurement chaque sachet.
  17. Machine autonome d'ensachage, selon les 14ème à 16ème revendications caractérisées car le groupe de soufflage est établi sur un support (81) qui se déplace verticalement sur des guides (82) également verticaux, qui relient au support (81) avec un châssis (83), en même temps qu'une broche (84) qui, par le biais d'une transmission appropriée 886), est reliée à un volant à commande manuelle (88), de sorte qu'à travers ce volant (88) le support (81) est réglable en hauteur pour adapter le niveau des buses de soufflage (75-75') aux différentes dimensions du sachet.
EP97918163A 1996-05-08 1997-05-08 Machine autonome d'ensachage Expired - Lifetime EP0844175B1 (fr)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
ES9601034 1996-05-08
ES9601034A ES2130936B1 (es) 1996-05-08 1996-05-08 Grupo conformador de sacos para maquinas de ensacado.
ES9601028 1996-05-08
ES9601028A ES2130042B1 (es) 1996-05-08 1996-05-08 Mejoras introducidas en maquinas autonomas de ensacado.
ES9601030A ES2131441B1 (es) 1996-05-08 1996-05-08 Mecanismo soldador para reforzamiento de sacos, en maquinas autonomas de ensacado.
ES9601030 1996-05-08
PCT/ES1997/000117 WO1997042077A1 (fr) 1996-05-08 1997-05-08 Ameliorations apportees aux machines autonomes d'ensachage

Publications (2)

Publication Number Publication Date
EP0844175A1 EP0844175A1 (fr) 1998-05-27
EP0844175B1 true EP0844175B1 (fr) 2000-01-19

Family

ID=27240540

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97918163A Expired - Lifetime EP0844175B1 (fr) 1996-05-08 1997-05-08 Machine autonome d'ensachage

Country Status (3)

Country Link
EP (1) EP0844175B1 (fr)
DE (1) DE69701180T2 (fr)
WO (1) WO1997042077A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105270659A (zh) * 2015-10-13 2016-01-27 上海东富龙科技股份有限公司 一种尾灌双硬管非pvc软袋大输液自动生产线
WO2021228812A1 (fr) * 2020-05-13 2021-11-18 Haver & Boecker Ohg Ensacheuse et procédé de fonctionnement
EP4155215A1 (fr) * 2021-09-28 2023-03-29 Cetec Industrie Conditionnement Ensacheuse comprenant des postes avec des durées d'immobilisation différenciées

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19964295C2 (de) * 1999-05-04 2002-12-19 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
DE19936660C2 (de) * 1999-05-04 2002-10-24 Windmoeller & Hoelscher Vorrichtung zum Herstellen, Befüllen und Verschließen von Säcken
DE50013648D1 (de) 1999-05-04 2006-12-07 Windmoeller & Hoelscher Vorrichtung zum Befüllen und Verschliessen von Säcken
DE19933486C2 (de) * 1999-05-04 2001-06-13 Windmoeller & Hoelscher Vorrichtung zum Befüllen und Verschließen von Säcken
ATE313483T1 (de) * 2000-10-24 2006-01-15 Windmoeller & Hoelscher Vorrichtung zum herstellen und vorzugsweise auch zum befüllen und verschliessen von säcken aus thermoplastichem kunststoff
ES2232215B1 (es) * 2001-08-07 2006-10-01 Coalza, S.L. Maquina ensacadora de bolsas.
ES2253027B1 (es) * 2003-05-30 2007-07-16 Giro Gh, S.A. "maquina para fabricar, llenar y cerrar bolsas de malla a partir de un rollo continuo de malla tubular".
DE10355939A1 (de) * 2003-11-29 2005-07-07 Chronos Richardson Gmbh Sackabnahme- und Packvorrichtung
DE102007015250A1 (de) * 2007-03-27 2008-10-02 Windmöller & Hölscher Kg Vorrichtung und Verfahren zum Formen, Füllen und Schließen von Säcken
ES2363290B1 (es) * 2011-05-11 2012-06-19 Técnicas Mecánicas Ilerdenses, S.L. Maquina de conformado, llenado y sellado
DE102013105549B3 (de) * 2013-05-29 2014-07-03 Windmöller & Hölscher Kg Kühlvorrichtung für die Kühlung einer Schweißnaht an einer Seitenfalte eines Folienmaterials in einer Sackfüllanlage
FR3030460B1 (fr) * 2014-12-19 2016-12-30 Cetec Ind Conditionnement Dispositif d'ensachage polyvalent comprenant un systeme optimise pour le convoyage des sacs
GB2559215B (en) * 2016-07-08 2021-09-01 Girnet Int S L A bag suitable for packaging of fruit and vegetable products and means for its manufacture
DE202016008986U1 (de) 2016-11-22 2021-06-10 Payper S.A. Kühlvorrichtung zum Kühlen von Verschlüssen in einer Folie in einer Form-, Füll- und Verschlussmaschine
EP3323741A1 (fr) 2016-11-22 2018-05-23 Payper, S.A. Dispositif de refroidissement des joints dans un film dans une formeuse-remplisseuse-scelleuse
CA3059742C (fr) 2018-10-30 2022-09-06 Concetti S.P.A. Ensacheuse automatique avec plusieurs postes de remplissage
US11345500B1 (en) * 2019-12-10 2022-05-31 Amazon Technologies, Inc. Bag loading machine and method of packaging items
DE102020112991A1 (de) * 2020-05-13 2021-11-18 Haver & Boecker Ohg Packmaschine und Verfahren zum Betreiben

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2301817C3 (de) * 1973-01-15 1983-11-03 Sieg-Rheinische Registrierwaagenfabrik "fix" Peter Steimel, 5205 Hennef Vorrichtung mit auf einem Kreisumfang angeordneten Stationen zum Herstellen von Seitenfaltensäcken aus einem Seitenfaltenschlauch
GB1518396A (en) * 1975-04-30 1978-07-19 Haver & Boecker Apparatus for packing bulk goods in sidegusset bags of synthetic plastics material
DE3118866C2 (de) * 1981-05-13 1984-04-12 Haver & Boecker, 4740 Oelde "Maschine zum Füllen und Verschließen von Säcken aus Kunststoff, vorzugsweise von Seitenfaltensäcken oder Flachsäcken"
DE3818910A1 (de) * 1988-06-03 1989-12-14 Haver & Boecker Vorrichtung zum fuellen und verschliessen von offenen saecken
EP0561097B1 (fr) * 1992-02-18 1996-07-03 SASIB PACKAGING ITALIA S.r.L. Machine pour la production de sacs à partir d'un film en matière plastique comportant des moyens de positionnement l'un par rapport à l'autre des bouts terminaux en amont et en aval
IT1263250B (it) * 1992-10-27 1996-08-05 Macchina automatica per formare, riempire e sigillare sacchi e simili.

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105270659A (zh) * 2015-10-13 2016-01-27 上海东富龙科技股份有限公司 一种尾灌双硬管非pvc软袋大输液自动生产线
CN105270659B (zh) * 2015-10-13 2017-06-27 上海东富龙科技股份有限公司 一种尾灌双硬管非pvc软袋大输液自动生产线
WO2021228812A1 (fr) * 2020-05-13 2021-11-18 Haver & Boecker Ohg Ensacheuse et procédé de fonctionnement
EP4155215A1 (fr) * 2021-09-28 2023-03-29 Cetec Industrie Conditionnement Ensacheuse comprenant des postes avec des durées d'immobilisation différenciées
FR3127482A1 (fr) * 2021-09-28 2023-03-31 Cetec Industrie Conditionnement Ensacheuse comprenant des postes avec des durées d’immobilisation différenciées

Also Published As

Publication number Publication date
EP0844175A1 (fr) 1998-05-27
WO1997042077A1 (fr) 1997-11-13
DE69701180T2 (de) 2000-09-14
DE69701180D1 (de) 2000-02-24

Similar Documents

Publication Publication Date Title
EP0844175B1 (fr) Machine autonome d'ensachage
US3956866A (en) Packaging method and apparatus
US4510736A (en) Machine for filling and closing bags of synthetic plastic material
US6295790B1 (en) Compact bag filling machine
US3945173A (en) Machine for automatically filling and sealing bags
US5619839A (en) Packaging machine and method
EP0413431B1 (fr) Machine d'emballage
CN113602577B (zh) 二次装袋机及其工作方法
US6070395A (en) Method for joint packaging of bags and their contents and machine for performing such method
US5265402A (en) Packaging machine
US3091902A (en) Method and device for fabricating bag packages
CN100494000C (zh) 给袋式全自动包装机的平送袋机构
US5077958A (en) Packaging machine and method
US4537012A (en) Packaging machine with rotary actuated sealing jaws
CN216035390U (zh) 二次装袋机
CA1296988C (fr) Methode et appareil permettant de faconner, de remplir, de sceller des sacs etde les deposer dans des cartons
US4766716A (en) Adjustable guide roller assembly for tube forming apparatus
US4974396A (en) Apparatus for manufacturing bags
CN201058674Y (zh) 给袋式全自动包装机的平送袋机构
JP2000255501A (ja) メッシュ織物の袋を製造し、充填し、および閉じるための装置
US5282351A (en) Method for making, filling and sealing sacks
CN212244116U (zh) 一种粉剂包装机的导模装置
JPH01308707A (ja) 角錐パック製造方法及び装置
EP0965521A1 (fr) Machine pour emballer des produits en vrac ou des groupes d'articles dans un sachet tubulaire
US4574560A (en) Apparatus for closing filled sacks

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE IT

17P Request for examination filed

Effective date: 19980205

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 19990208

RTI1 Title (correction)
GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE IT

REF Corresponds to:

Ref document number: 69701180

Country of ref document: DE

Date of ref document: 20000224

ITF It: translation for a ep patent filed

Owner name: BIANCHETTI - BRACCO - MINOJA S.R.L.

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20050629

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20060531

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20061201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070508