EP0184485B1 - Verfahren und Maschine zum Verpacken einer Ladung in einem Schlauchstück aus flexiblem Material - Google Patents

Verfahren und Maschine zum Verpacken einer Ladung in einem Schlauchstück aus flexiblem Material Download PDF

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Publication number
EP0184485B1
EP0184485B1 EP85402177A EP85402177A EP0184485B1 EP 0184485 B1 EP0184485 B1 EP 0184485B1 EP 85402177 A EP85402177 A EP 85402177A EP 85402177 A EP85402177 A EP 85402177A EP 0184485 B1 EP0184485 B1 EP 0184485B1
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EP
European Patent Office
Prior art keywords
sheathing
machine according
opening
transverse
sheath
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
EP85402177A
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English (en)
French (fr)
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EP0184485A1 (de
Inventor
Hubert Thimon
Jean-Paul Martin Cochet
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Newtec International SA
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Newtec International SA
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Publication date
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Priority to AT85402177T priority Critical patent/ATE39657T1/de
Publication of EP0184485A1 publication Critical patent/EP0184485A1/de
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Publication of EP0184485B1 publication Critical patent/EP0184485B1/de
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
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/13—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the preformed tubular webs being supplied in a flattened state
    • B65B9/135—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the preformed tubular webs being supplied in a flattened state for palletised loads
    • 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
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/13—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the preformed tubular webs being supplied in a flattened state
    • B65B9/14—Devices for distending tubes supplied in the flattened state

Definitions

  • the invention relates to a method and a machine for packaging a load in a sheath section made of a flexible material.
  • French Patent No. 1,582,024 describes a method and a machine in which the tubular sheath initially wound flat is first passed over the upper guide and opening elements below which rollers are placed. open sheath drive located just above the load to be packed. When the vertical lateral faces of the load are filled with the sheath, the latter is cut between the upper horizontal face of the load and the drive rollers.
  • French Patent No. 2,013,214 describes a machine comprising a transport path for introducing and extracting the load; means for cutting the sheath above the load; drive means placed on either side of the transport track and comprising gripping members for deploying the sheath above the load and covering it with the sheath open by moving it downwards along load; and means for transverse welding of the sheath placed between the cutting means and drive means.
  • French Patent No. 2,026,181 provides that the means for driving the sheath include transport strips provided with suction members.
  • French patent n ° 2106 654 provides in particular for the addition of a fixed separator penetrating into the bellows of the sheath and promoting their opening.
  • This separator is placed above the sheath cutting means themselves located above the welding means.
  • the sheath drive means comprise endless opening chains provided with grippers and endless drive chains provided with spacer fingers.
  • the endless opening chains comprise a vertical section where the cutting and welding means are located and a horizontal section where the sheath is open.
  • the fixed separator is placed at the upper end of the vertical section.
  • French Patent No. 2 199498 provides that the spacer fingers are carried by a frame forming a template for the load to be packaged and possibly provided with heating means.
  • French Patent No. 2,220,429 provides for the addition of means suitable for creating a vacuum in the upper part of the machine, which has the effect of keeping the sheath away from the load.
  • Patent No. 2,220,428 provides for the addition of walls extending parallel to the circuit of the endless chains for driving the spacer fingers.
  • French Patent No. 2,270,149 provides for combining with the drive means of the sheath extraction means which, after welding and cross section of the sheath, separate the latter from the drive means.
  • These extraction means are constituted by a pivoting lever, the free end of which can pivot near the entry end of the double conveyor belt forming part of the means for driving and deploying the sheath.
  • French Patent No. 2,413,270 provides for the addition of a spacer comprising a fixed guide and a movable part between an active extended position and a retracted inactive position.
  • the fixed guide is placed above the drive and opening means of the sheath. Between them are placed the cutting and welding means which can be active when the moving part of the spacer is in the retracted position. This makes it possible to avoid placing the cutting and welding means in line with the drive and opening means of the sheath, which allows continuous and non-discrete adjustment of the length of the sheath section.
  • European patent n ° 000 6249 provides additional gripping members which, during the last part of the movement of the sheath on the load, descend together with the mobile gripping members acting on the lower edge of the open sheath, in order to maintain the four upper corners of the sheath. These additional gripping members are placed below the fixed gripping members which open the sheath.
  • Machines are also known in which only the lower free end of the sheath is kept open while the sheath part located between the upper horizontal face of the load and the folded sheath supply rollers is not positively maintained and comes to curve in "tent fabric". Alternatively, air is blown into the sheath to separate it from the load.
  • Document DE 2 549 251 describes a covering machine in which the separation means consist of rolls of movable pre-openings. In addition, nothing is provided, according to this patent, to cause the film to move apart and pass through the pre-opening rollers or to allow positioning of the film allowing its subsequent effective positive gripping.
  • machines having different operating sequences and in particular either pleating the bellows-shaped sheath before placing it around the load and then unfolding it (French patent n ° 2 230 549), or opening the sheath on the ground and next to the load then rotating it to bring it above and then around the load.
  • the invention relates to machines with positive opening, that is to say those in which the sheath is held positively during the opening phase, the latter intervening above the load.
  • These machines include generally means for cutting and transverse welding of the sheath located above the area where the sheath is fully folded or almost completely folded, for obvious operational reasons.
  • the cutting and welding means are in the form of two pairs of jaws placed in close proximity to one another or of a pair of double jaws.
  • the cutting and welding of the sheath introduce along the latter, in the direction of its travel, a discontinuity which is inconvenient for its initial gripping by the opening means. It has been thought to remedy this problem by providing in the cutting and welding zone a spacer having a generally triangular profiled shape whose tapered point is directed upwards. This spacer allows to separate from one another the two parts of the bellows of the sheath previously folded and which tend to "stick" to each other by static electricity.
  • the first solution has the disadvantage of leading either to possible interference between the cutting and welding means and the gripping means, or to lengths of sheath section varying in a discrete and non-continuous manner (by the value of the pitch of the gripping means).
  • the second solution has the drawback of complexity, of bulk and leads to slowing down the rate of operation of the machine.
  • the problem which arises is therefore that of the interference existing between the spacer and the cutting and welding means.
  • the invention therefore aims to solve this problem and to this end, it proposes a method for threading a section of tubular sheath with bellows, initially folded flat, on a load, from above, in which the two parts of each are moved apart. sheath bellows by means of spacers; the sheath is opened positively; pull the open sheath down to surround the load; the folded sheath is cut transversely to obtain a sheath section corresponding to the height of the load; and the sheath is transversely welded in the immediate vicinity of the cross section in order to cover the upper horizontal face of the load.
  • a partial transverse welding of the sheath is carried out so that the two parts of each bellows are not joined to each other at least starting from their free outer edge in order to provide space from this free outside edge continuous access to the interior of the bellows, including at the level of the transverse welding, and the two parts of each bellows are removed permanently immediately before opening the sheath.
  • the transverse welding is carried out in the time before and independently and in the space apart and independently of the cross section.
  • transverse welding is carried out during the packaging process itself.
  • transverse welding is carried out before the packaging process, the sheath then being pre-welded transversely and partially beforehand, as mentioned previously.
  • a machine for implementing the method comprises a frame; means for supplying, maintaining and discharging the load; means for bringing the sheath above and perpendicular to the holding means; spacer means for separating the two parts of each sheath bellows from one another; positive means for opening the sheath integrally placed below the spacer means; means for pulling the open sheath downwards and surrounding the load with it, extending between the free end parts separated from the positive opening means and the means for holding the load, on either side thereof this; and means for cross-sectioning the sheath placed above the positive opening means.
  • this machine comprises spacer means which are permanently and completely fixed.
  • These spacer means comprise an upper part located at the outlet of the sheath support roller, a lower part extending the upper part downwards towards the positive means of opening the sheath and there is a very wide transverse opening in the middle part. low height for the passage of the cutting means exclusively, the machine being intended to operate with a sheath comprising partial transverse welding.
  • the machine also includes transverse welding means allowing partial transverse welding as mentioned above. These welding means are spread upstream of the cutting means and are not located opposite the spacer means. The welding means are for example carried by the frame, laterally.
  • the machine may include, in this variant, sheath accumulation means interposed between the welding means and cutting means.
  • the machine is devoid of means for transversely welding the sheath, the sheath used and coming from the coil being pre-welded transversely and partially as indicated above.
  • the welding operation is dissociated from the cutting operation, which makes it possible to physically separate the welding means from the cutting means or even to eliminate the welding means if the machine uses sheath pre-welded.
  • partial welding as defined previously allows constant precency, in the access thus formed in each bellows, spacer means. These can be made fixed. The operation of the machine is not disturbed by the transverse welding operations, which makes it possible to achieve very high rates much higher than the rates previously known.
  • the length of the sheath section can be adjusted continuously. All these advantages are obtained with a particularly simple, therefore reliable machine, the access to which in the upper part is greatly improved.
  • each bellows 3 are separated from one another, by means of spacer means 12 to which we will return later; then the sheath is opened positively, that is to say that the bellows 3 is unfolded until the sheath 1 is brought into a rectangular or square configuration; then the sheath thus opened is placed on the load 2 and it is pulled downwards to surround the load; the folded sheath is cut transversely to obtain a sheath section whose length corresponds to the height of the load 2; and finally the sheath is transversely welded immediately downstream of the cross section in order to cover the upper horizontal face 9.
  • a partial transverse welding of the tubular sheath 1 is carried out so that the two parts 5 of each bellows 3 are not joined to each other at least starting from their external free edges 7 in order to provide, starting from this external free edge 7, a continuous access 13 inside the bellows 3 including at the right of the transverse welding (FIG. 3).
  • a machine for implementing the method comprises (FIG. 1), a frame 14; means for supplying, holding and discharging the load 2, placed in the lower part; the means 16 for bringing the sheath 1 above and vertically above the holding means 15, placed at the upper part of the frame 14; spacer means 12 for moving the two parts 5 of each bellows 3 away from each other; positive means 17 for opening the sheath 1 integrally placed below the spacer means 12; means 18 for pulling the sheath 1 open downwards and surrounding the load with it, extending between the free end portions separated from the positive opening means 17 and the means 15 for holding the load 2, on both sides and d 'other of these; and cross-sectional means 19 of the sheath placed above the positive opening means 17.
  • the spacer means 12 are permanently and completely fixed.
  • transverse welding is therefore carried out in time before and independently of the cross section. In space, transverse welding is carried out apart and independently of the cross section.
  • the welding operation is completely dissociated from the cutting operation, which makes it possible to carry out the welding operation at the desired time and place.
  • transverse welding is carried out during the packaging process itself.
  • conventional non-pre-welded tubular sheath is used and the method includes welding operations taking place according to a determined sequence.
  • This variant is more particularly advantageous when packing successive loads of variable dimensions.
  • transverse welding is carried out before the packaging process, the sheath then being of the pre-welded type.
  • This variant is more particularly advantageous in the case where the successive loads to be packaged are of standardized dimensions.
  • the two parts 5 of each bellows 3 are removed permanently and immediately before opening the sheath 1. Indeed, failing to separate the two parts 5 of bellows, the opening of the sheath would be impossible or very difficult, due to static electricity which tends to "stick" the two parts 5 against each other.
  • the machine comprises support means not shown for a coil 20 of tubular sheath 1 preferably located at the bottom of the frame 14 for obvious reasons of convenience.
  • Return rollers 21, 22 make it possible to bring the tubular sheath 1 from the coil 20 to the upper part of the frame 14 as far as the supply means 16 taking the form of two rollers, the first 16a sheath support, driven by a gear motor 16b and the second presser 16c.
  • the machine therefore comprises from top to bottom and from the supply means 16, the cutting means 19, the spacer means 12, the positive opening means 17 and the means for pulling sheath 18.
  • the fixed, single-piece spacer means 12 comprise an upper part 12a in the general form of a thin and flat plate and a lower part 12b forming two deflectors extending the upper part 12a downwards and moving away from one another down towards the positive opening means 17 in the immediate vicinity of which they terminate.
  • the upper free end 12c of the spacer means 12 forms an acute point located immediately at the outlet of the sheath support roller 16a.
  • the spacer means 12 comprise in their central part a transverse opening 12d for passage of the cutting means 19 (FIG. 15).
  • the opening 12d is formed after an area of increasing thickness 12e of the upper part 12a.
  • the transverse opening 12d is of very low height, for example of the order of a centimeter, which, combined with the zone of increasing thickness 12e and the fact that the cut occurs "on the fly” and not in a stationary position of the sheath - precisely because of the dissociation of the welding operation - allows the free end of the tubular sheath 1 to pass the opening 12d without coming to lock against it.
  • the upper part 12a has a thickness of the order of a few millimeters while the zone of increasing thickness 12e has a thickness of the order of about a centimeter.
  • the lower part 12b has a spacing of several centimeters.
  • the spacer means 12 are made of a particularly entertaining material when the tubular sheath 1 slides, such as metal.
  • the axes extending horizontally and parallel to the plane of symmetry of folding are said to be transverse since they extend transversely with respect to the folded tubular sheath 1.
  • the machine also has another plane of symmetry - the plane Q - vertical and orthogonal to the plane P, which is the plane of FIG. 1. This plane is said to be the plane of opening since it is in this plane that the movement occurs. sheath opening 1.
  • the two drive rollers 23 are located on the spacer means 12 at the junction of the upper part 12a and the lower part 12b, therefore below the opening 12d.
  • the machine also includes transverse welding means parqui are suitable for performing a partial transverse welding of the sheath 1 so that the two parts 5 of each bellows 3 are not secured to each other at least from their outside free edge 7 so as to provide continuous access to the inside of the outside free edge 7 bellows 3, including at the level of transverse welding.
  • These welding means 24 are separated upstream from the cutting means 19 and are not located with regard to the spacer means 12.
  • the welding means 24 are, as regards their location, completely dissociated from the cutting means 19 and the means spacers 12.
  • the welding means 24 are carried by the frame 14 laterally and at its upper part. However, they could be worn laterally at the middle part or at the lower part of the frame, close or not to the coil 20.
  • the welding means 24 comprise two welding jaws 24a, 24b with which are not shown drive means, adapted to allow partial welding.
  • sheath accumulation means 25 interposed between the welding means 24 and the cutting means 19, more precisely the sheath supply means 16 (FIG. 1 ).
  • These accumulation means 25 can be constituted by at least two idler rollers 25a, 25b of parallel axes, movable in sliding relatively relative to one another in the transverse direction and relative displacement means of the axes rollers 25a, 25b, not shown. These relative displacement means ensure both the guidance and the drive of the axes of the rollers 25a, 26b. By moving the two rollers 25a, 25b away from each other, tubular sheath 1 is accumulated between them. This arrangement can have the advantage of allowing better adjustment of the length of the sheath section used.
  • the machine does not have means for transverse welding of the sheath and the machine uses a sheath coming from a sheath coil pre-welded transversely and partially, under the same conditions as described above.
  • This variant is particularly advantageous in the case of packaging loads of standardized heights because it results in a particularly simple machine at very high speed.
  • the positive opening means 17 comprise two main assemblies symmetrical with respect to the plane of symmetry P of the folded sheath, each associated with one of the two large faces 4 of the sheath.
  • Each of these main opening assemblies comprises two elementary assemblies symmetrical with respect to the vertical plane of symmetry of opening of the sheath Q.
  • the two elementary assemblies facing the two main assemblies constitute an opening sub-assembly with which the two parts 5 of the same bellows 3. It is such a sub-assembly which is shown in FIG. 1.
  • An elementary opening assembly comprises a support strip 26 of the free outer edge 7 of the sheath; a drive member 27 of the sheath 1 on the support strip 26; and means 28 for moving the support strip 26 and the drive member 27 between an opening opening position (in solid lines in FIG. 11) and an opening opening position (in dash on the figure 11).
  • the drive members 27 such as rollers or pinions are driven by the drive rollers 23 when the opening means 17 are in the opening start position. In the end of opening position or in an intermediate position other than the start of opening position, the drive members 27 are not driven.
  • the support bands 26 and the drive members 27 are constituted respectively by first and second endless bands applied against each other and comprising, in a manner known per se, rollers end.
  • Each pair of the first and second endless belts provides the function of driving a predetermined length of sheath. For this reason, each pair of first and second endless belts can be short in length.
  • the support strip 26 and the drive member 27 are constituted by two rollers applied one against the other.
  • the displacement means 28 of each main assembly comprise a transverse articulation axis 29 around which the support strip 26 and the drive member can pivot.
  • the displacement means 28 also comprise at least one drive cylinder 30 placed in the plane of symmetry Q, substantially horizontal or slightly inclined to the horizontal.
  • This drive cylinder 30 allows a pendulum movement of the support strip 26 and the drive member 27 between the two extreme positions of opening start and end of opening.
  • the actuator 30 is articulated to a spacer 31 connecting two flanges 32 on which are mounted the two support bands 26 and the two drive members 27 of each main opening assembly.
  • the two flanges 32 have a generally triangular shape and are spaced transversely from one another.
  • the articulation axis 29 passes through the upper vertices of the flanges 32 and is located substantially at the level of the transverse cutting means 19 while being spaced from the plane of symmetry P.
  • a support strip 26 and a drive member 27 of an elementary opening assembly are located on the small lower side of the corresponding flange 32.
  • the two flanges 32 of the same main assembly are mounted with adjustable spacing on the spacers 31 or the hinge pin 29. This arrangement makes it possible to adapt the machine to different sheath dimensions, in the direction of the width of the large faces 4.
  • the support strips 26 are inclined at about 45 ° on the vertical. In the end of opening position, the support strips 26 are substantially horizontal.
  • the machine also includes means for adjusting the end of opening position, so as to be able to allow the packaging of loads of different dimensions, as regards the opening of the bellows 3.
  • These adjusting means 33 comprise at least one and generally two (per main assembly) rods 33a articulated around a transverse axis 33b so as to be disposed substantially horizontally and perpendicular to the plane P.
  • a stop ring 33c is mounted on the rod 33a.
  • the rod 33a cooperates with an opening 33d formed in the frame 14 and on which the stop ring 33c abuts.
  • the support strip 26, placed in the lower position, below the drive member 27 is carried by a plate 34 articulated about a horizontal axis 35 and perpendicular to the plane P.
  • Drive means 36 such as a jack moves the plate 34 therefore the corresponding support strip 26 between its normal position for holding against the drive member 27 and a vertical retraction position directed downwards substantially perpendicular to the drive member 27.
  • the strip support 26 no longer realizes, in the vertical retracting position, its function of supporting the sheath 1 so that the latter can be applied to the upper horizontal face 9 of the load 2.
  • the drive means 36 are implemented approximately when the partial transverse welding line of the sheath 1 is located at the level of the spacer means 12.
  • the machine also includes control means or cutting means 19, means for locating 37 the position of the transverse weld line and operating means or cutting means 19.
  • locating means locate the weld line itself in particular by optical, mechanical, electrical or other means.
  • the locating means 37 identify the spacing of the weld line, in particular by a roller for counting the sheath flow rate.
  • the geared motor 16b makes it possible to ensure the braking or stopping of the roller 16a which is capable of ensuring sufficient tension of the sheath 1 between the rollers 16a and the drive rollers 23, tension suitable for promoting the cutting of sheath.
  • the cutting means 19 are mainly constituted by a cutting blade or saber 19a carried by a drive cylinder 19b.
  • the means for pulling the sheath 18 are not directly part of the invention and include spreading fingers 18a carried by endless chains 18b stretched vertically on either side of the machine between upper and lower return wheels 18c.
  • the opening means 17 are pivoted by means of the drive jacks 30 around the axes 29 to the end of opening position defined by the adjusting means 33 (FIGS. 7 and 8).
  • the drive rollers 23 are motorized but the support bands 26 and the drive members 27 are mounted unacceptable and remain stationary.
  • the cutting then occurs on the fly during the positioning of the sheath on the load and while the support roller 16a is braked or temporarily stopped while the drive rollers 23 are still motorized.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Buffer Packaging (AREA)
  • Packaging Of Machine Parts And Wound Products (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Making Paper Articles (AREA)

Claims (36)

1. Verfahren zum Überschieben eines rohrförmigen, mit Faltenbälgen versehenen und anfänglich flach zusammengefalteten Schlauchstücks über eine Ladung von oben her, bei dem die beiden Partien jedes Schlauch-Faltenbalges dank einer Spreizvorrichtung auseinandergebracht werden;
bei dem der Schlauch positiv geöffnet wird;
bei dem der geöffnete Schlauch zum Umschließen der Ladung nach unten gezogen wird;
bei dem der flach zusammengefaltete Schlauch in Querrichtung abgeschnitten und so ein Schlauchstück, das der Höhe der Ladung entspricht, erhalten wird; und
bei dem der Schlauch in unmittelbarer Nähe des querverlaufenden Schnittes verschweißt wird, damit die obere horizontale Fläche der Ladung bedeckt ist, dadurch gekennzeichnet, daß eine teilweise, querverlaufende Verschweißung des Schlauchs (1) derart vorgenommen wird, daß die beiden Partien (5) jedes Faltenbalges (3) zumindest von ihrem äußeren freien Rand (7) an nicht miteinander fest verbunden sind, damit von diesem äußeren freien Rand aus ein fortlaufender Zugang (13) zum Inneren des Faltenblages (3) einschließlich im rechten Winkel zur querverlaufenden Verschweißung vorgesehen ist, und daß die beiden Partien jedes Faltenbalges (3) unmittelbar vor dem Öffnen des Schlauches ständig auseinandergezogen werden.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die querverlaufende Verschweißung zeitlich vor und unabhängig vom querverlaufenden Schnitt vorgenommen wird.
3. Verfahren nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß die querverlaufende Verschweißung räumlich entfernt und unabhängig vom querverlaufenden Schnitt vorgenommen wird.
4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die quesverlaufende Verschweißung während des Verpackungsvorgangs vorgenommen wird.
5. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die querverlaufende Verschweißung vor dem Verpackungsvorgang vorgenommen wird, wobei der Schlauch ein solcher ist, der bereits vorverschweißt ist.
6. Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß zum positiven Öffnen des Schlauches (1) die beiden Partien (5) jedes Faltenbalges (3), die dann nachträglich auseinandergezogen sind, mitgezogen werden und daß beim Auseinanderziehen der beiden Partien die beiden Stirnseiten des Schlauchs sich verschwenken.
7. Maschine zum Überschieben eines rohrförmigen, mit Faltenbälgen versehenen Schlauchstücks, das auf einer Schlauchtrommel (20) mit flach zusammenfalteten Faltenbälgen vorgesehen ist, über eine Ladung (2) von oben her, mit einem Maschinenrahmen (14);
mit einer Vorrichtung (15) zum Herführen, Halten und Wegführen der Ladung (2);
mit einer Vorrichtung (16) zum Heranführen des Schlauches (1) von oben her und senkrecht zur Haltevorrichtung (15);
mit einer Spreizvorrichtung (12) zum Auseinanderziehen der beiden Partien (5) jedes Faltenbalges (3) des Schlauchs (1);
mit einer positiven Öffnungsvorrichtung (17) für den Schlauch (1), die unterhalb der Spreizvorrichtung (12) integriert angeordnet ist;
mit einer Vorrichtung (18) zum Ziehen des geöffneten Schlauchs nach unten und zum Umschließen der Ladung mit dem Schlauch, wobei sich diese Vorrichtung zwischen den freien äußeren im Abstand angeordneten Bereichen der positiven Öffnungsvorrichtung (17) und der Vorrichtung (15) zum Halten der Ladung zu deren beiden Seiten erstreckt;
mit einer Vorrichtung (19) zum Querschneiden des Schlauchs (1), die oberhalb der positiven Öffnungsvorrichtung (17) angeordnet ist,
dadurch gekennzeichnet, daß die Spreizvorrichtung (12) ständig und in ihrer Gesamtheit ortsfest ist und einen oberen Teil (12a), der am Ausgang der Schlauchtragewalze (16a) angeordnet ist, einen unteren Teil (12b) der den oberen Teil (12a) nach unten hin in Richtung zur positiven Öffnungsvorrichtung (17) für den Schlauch verlängert, und im mittleren Teil eine Queröffnung (12d) für den Durchtritt der Schneidevorrichtung (19) aufweist, und daß die Maschine dazu bestimmt ist, daß sie mit einem Schlauch, der eine teilweise, querverlaufende Verschweißung aufweist, betriebbar ist.
8. Maschine nach Anspruch 7 dadurch gekennzeichnet, daß die Öffnung (12d) nach einer Zone (12e) sichelförmiger Dicke des oberen Teils (12a) angeordnet ist.
9. Maschine nach einem der Ansprüche 7 oder 8, dadurch gekennzeichnet, daß die Queröffnung (12d), die in der Spreizvorrichtung (12) vorhanden ist, eine sehr geringe Höhe aufweist, die den Durchgang des Schlauches mit seinem Anfgangsende zuläßt.
10. Maschine nach einem der Ansprüche 7 bis 9, dadurch gekennzeichnet, daß sie zwei Antriebsrollen (23) für den Schlauch auf der Spreizvorrichtung (12) aufweist.
11. Maschine nach Anspruch 10, dadurch gekennzeichnet, daß die beiden Antriebsrollen (23) auf der Spreizvorrichtung (12) an der Verbindung des oberen Teils (12a) mit dem unteren Teil (12b) angeordnet sind.
12. Maschine, mit einer Querschweißvorrichtung (24) für den Schlauch, nach einem der Ansprüche 7 bis 11, dadurch gekennzeichnet, daß diese Schweißvorrichtung dazu geeignet ist, eine teilweise querverlaufende Verschweißung des Schlauches derart zu verwirklichen, daß die beiden Partien (5) jedes Faltenblages (3) zumindest von ihrem äußeren freien Rand (7) aus nicht miteinander verbunden sind, damit von diesem äußeren freien Rand (7) aus ein kontinuierlicher Zugang zum Inneren des Faltenbalges einschließlich im rechten Winkel zur querverlaufenden Verschweißung vorgesehen ist.
13. Maschine nach Anspruch 12, dadurch gekennzeichnet, daß die Schweißvorrichtung (24) in Schlauchbewegungsrichtung vor der Schneidevorrichtung (19) im Abstand und nicht der Spreizvorrichtung (12) gegenüberliegend angeordnet ist.
14. Maschine nach einem der Ansprüche 12 oder 13, dadurch gekennzeichnet, daß die Schweißvorrichtung (24) hinsichtlich ihrer Anordnung insgesamt von der Schneidevorrichtung (19) und der Spreizvorrichtung (12) getrennt ist.
15. Maschine nach einem der Ansprüche 12 bis 14, dadurch gekennzeichnet, daß die Schweißvorrichtung (24) vom Maschinenrahmen (14) seitlich an dessen oberen Teil oder mittleren oder unteren Teil nahe bei oder entfernt von der Schlauchtrommel (20) gehalten ist.
16. Maschine nach einem der Ansprüche 12 bis 15, dadurch gekennzeichnet daß sie eine Speichervorrichtung (25) für den Schlauch aufweist, die zwischen der Schweißvorrichtung (24) und der Schneidevorrichtung (19) angeordnet ist.
17. Maschine nach Anspruch 16, dadurch gekennzeichnet daß die Speichervorrichtung (25) durch zumindest zwei losen Walzen (25a, 25b) mit parallelen Achsen gebildet ist, welche relativ zueinander in Querrichtung mit einer Relatiwerschieberichtung für die beiden Achsen beweglich verschiebbar sind.
18. Maschine nach einem der Ansprüche 7 bis 11, dadurch gekennzeichnet, daß sie einen auf der Trommel (20) vorgesehenen Schlauch verwendet, der in Querrichtung und teilweise derart vorgeschweißt ist, daß von den äußeren freien Rändern aus ein kontinuierlicher Zugang zum Inneren der Faltenbälge einschließlich im rechten Winkel zur querverlaufenden Verschweißung erreicht ist.
19. Maschine nach einem der Ansprüche 7 bis 18, dadurch gekennzeichnet, daß eine Grundöffnungseinheit ein Halteband (26), ein Antriebsorgan (27) für den Schlauch (1) auf dem Halteband (26) und eine Vorrichtung (28) zum Verschieben des Haltebandes (26) und des Antriebsorgans (27) zwischen einer Position zu Beginn der Öffnungsvorganges und einer Position am Ende des Öffnungsvorganges aufweist.
20. Maschine nach Anspruch 19, dadurch gekennzeichnet, daß die Antriebsorgane (27) durch die Antriebsrollen (23) in der Position zu Beginn des Öffnungsvorganges angetrieben sind.
21. Maschine nach einem der Ansprüche 19 oder 20, dadurch gekennzeichnet, daß in der Position am Ende des Öffnungsvorganges oder in einer Zwischenposition, die von der Position am Ende des Öffnungsvorganges abweicht, die Antriebsorgane (27) nicht angetrieben sind.
22. Maschine nach einem der Ansprüche 19 bis 21, dadurch gekennzeichnet, daß die Haltebänder (26) und die Antriebsorgane (27) erste und zweite endlose Bänder sind.
23. Maschine nach einem der Ansprüche 19 bis 22, dadurch gekennzeichnet, daß jedes Paar der ersten und zweiten endlosen Bänder (26, 27) das Bewegen einer vorbestimmten Länge des Schlauches funktionell sicher stellen und aus diesem Grunde ggf. eine kurze Länge aufweisen.
24. Maschine nach einem der Ansprüche 19 bis 23, dadurch gekennzeichnet, daß die Vorrichtung (28) zum Verschieben jeder Hauptöffnungseinheit eine Schwenkachse (29) der Haltebänder und der Antriebsorgane (26, 27) und zumindest einen Antriebszylinder (30) aufweist, der eine Pendelbewegung zwischen den beiden Positionen zu Beginn bzw. am Ende der Öffnungsbewegung ermöglicht.
25. Maschine nach einem der Ansprüche 19 bis 24, dadurch gekennzeichnet, daß die beiden Haltebänder und die beiden Antriebsorgane (26, 27) jeder Hauptöffnungeinheit durch zwei dreieckförmige Lagerflansche (32) an deren unteren Schmalseiten gehalten sind, wobei die beiden Lagerflansche (32) in Querrichtung im Abstand voneinander angeordnet und durch Abstandshülsen (31) miteinander verbunden sind, wobei die Schwenkachse (29) durch die oberen Scheitel verläuft.
26. Maschine nach einem der Ansprüche 19 bis 25, dadurch gekennzeichnet, daß die beiden Schwenkachsen (29) der beiden Hauptöffnungseinheiten zumindest etwa in Höhe der Querschneidevorrichtung (19) angeordnet und in der Symmetrieebene des gefalteten Schlauches im Abstand angeordnet sind.
27. Maschine nach einem der Ansprüche 19 bis 26, dadurch gekennzeichnet, daß die beiden Lagerflansche (32) derselben Haupteinheit in ihrem Abstand einstellbar auf ihren Abstandshülsen (31) befestigt sind.
28. Maschine nach einem der Ansprüche 19 bis 27, dadurch gekennzeichnet, daß in der Position zu Beginn des Öffnungvorganges die Haltebänder (26) in etwa 45° zur Vertikalen geneigt sind.
29. Maschine nach einem der Ansprüche 19 bis 28, dadurch gekennzeichnet, daß in der Position am Ende des Öffnungsvorganges die Haltebänder (26) im wesentlichen horizontal verlaufen.
30. Maschine nach einem der Ansprüche 19 bis 29, dadurch gekennzeichnet, daß sie eine Regelvorrichtung (33) für die Position am Ende des Öffnungsvorganges derart aufweist, daß das Verpacken von Ladungen unterschiedlicher Dimensionen ermöglichst ist.
31. Maschine nach Anspruch 30, dadurch gekennzeichnet, daß die Regelvorrichtung (33) zumindest einen Schaft (33a) aufweist, der um eine Achse (33b) an einem Lagerflansch (32) drehbar gehalten ist, auf welchem Schaft ein Stellring (33c) befestigt ist, wobei dieser Schaft (33a) mit einer Öffnung (33d) im Maschinenrahmen zusammenwirkt, an der der Stellring (33c) anliegt.
32. Maschine nach einem der Ansprüche 19 bis 31, dadurch gekennzeichnet, daß das Halteband (26) in seiner Einheit gegenüber dem Lagerflansch (32) um eine horizontale und dazu senkrechte Achse schwenkbar gehalten ist und zwischen seiner normalen Halteposition und einer eingezogenen vertikalen Position mittels einer Antriebsvorrichtung (36) bspw. eines Stellzylinders bewegbar ist.
33. Maschine nach einem der Ansprüche 7 bis 32, dadurch gekennzeichnet, daß sie eine Steuervorrichtung für die Schneidevorrichtung, die eine Ortungsvorrichtung (37) für die Position der querverlaufenden Linie der Verschweißung aufweist, und eine Handhabungsvorrichtung für die Schneidevorrichtung besitzt.
34. Maschine nach Anspruch 33, dadurch gekennzeichnet, daß die Ortungsvorrichtung die Linie der Verschweißung insbesondere durch optische, mechanische, elektrische oder Mittel ausrichtet.
35. Maschine nach Anspruch 33, dadurch gekennzeichnet, daß die Ortungsvorrichtung den Abstand der Verschweißungslinie insbesondere durch eine Zählwalze für die Schlauchmenge markiert.
36. Maschine nach einem der Ansprüche 7 bis 35, dadurch gekennzeichnet, daß sie eine Bremsvorrichtung oder eine kurzzeitige Anhaltevorrichtung für die Walze (16a) aufweist, die eine ausreichende Zugspannung auf den Schlauch zwischen dieser Walze (16a) und den Antriebsrollen (23) zum Unterstützen des Abschneidens sichergestellt.
EP85402177A 1984-11-12 1985-11-12 Verfahren und Maschine zum Verpacken einer Ladung in einem Schlauchstück aus flexiblem Material Expired EP0184485B1 (de)

Priority Applications (1)

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AT85402177T ATE39657T1 (de) 1984-11-12 1985-11-12 Verfahren und maschine zum verpacken einer ladung in einem schlauchstueck aus flexiblem material.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8417232A FR2573030B1 (fr) 1984-11-12 1984-11-12 Procede et machine d'emballage d'une charge dans un troncon de gaine en un materiau souple
FR8417232 1984-11-12

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EP0184485A1 EP0184485A1 (de) 1986-06-11
EP0184485B1 true EP0184485B1 (de) 1989-01-04

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EP (1) EP0184485B1 (de)
AT (1) ATE39657T1 (de)
DE (2) DE3567189D1 (de)
ES (1) ES8700190A1 (de)
FR (1) FR2573030B1 (de)
NL (1) NL8503111A (de)

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FR2669002B1 (fr) * 1990-11-09 1994-10-28 Newtec Int Procede, machine et installation d'emballage d'une charge pourvue au moins une corniere de protection d'arete; dispositif de saisie, deplacement, depot et maintien d'une telle corniere.
FR2848986B1 (fr) * 2002-12-24 2005-10-07 Prot Decoration Conditionnemen Procede d'habillage de produits avec des manchons etirable et installation pour la pose de tels manchons
DE10362185B4 (de) * 2002-12-24 2008-07-03 Protection Decoration Conditionnement Europe Verfahren zur Herstellung von dehnbaren Manschetten
FR2869876B1 (fr) * 2004-05-07 2006-07-21 Thimon Sa Dispositif et procede d'ouverture d'une gaine plastique a soufflets pour la mise en forme d'une housse souple d'emballage d'une charge
DE102005062609A1 (de) * 2005-12-23 2007-07-05 Lachenmeier A/S Haubenverpackungsanlage mit Einrichtung zur Herstellung von Seitenfalten
EP2336034B1 (de) * 2009-12-21 2013-01-09 MSK - Verpackungs-Systeme GmbH Vorrichtung und Verfahren zum Umhüllen eines Gutstapels mit einer Folie
DE202010001587U1 (de) * 2010-01-29 2010-04-22 Msk - Verpackungs-Systeme Gmbh Vorrichtung zum Umhüllen eines Gutstapels mit einer Folie
DK3281878T3 (da) * 2016-08-10 2018-11-12 Maschf Moellers Gmbh Indretning til omvikling af en godsstabel med en rørkappe og fremgangsmåde til udskiftning af rørfolielageret i en tilsvarende indretning
CN109625489B (zh) * 2018-12-28 2020-11-27 涡阳县春秋塑料制品有限公司 一种塑料薄膜生产装置
CN110040275A (zh) * 2019-04-24 2019-07-23 漳州松田包装机械有限公司 一种下走膜包装成型器用包装膜收拢装置

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Publication number Priority date Publication date Assignee Title
US11370569B2 (en) 2019-12-19 2022-06-28 Officina Bocedi S.R.L. Machine for wrapping pallets

Also Published As

Publication number Publication date
ATE39657T1 (de) 1989-01-15
ES8700190A1 (es) 1986-11-16
EP0184485A1 (de) 1986-06-11
NL8503111A (nl) 1986-06-02
ES548982A0 (es) 1986-11-16
FR2573030A1 (fr) 1986-05-16
DE3540095A1 (de) 1986-05-28
FR2573030B1 (fr) 1987-09-25
DE3567189D1 (en) 1989-02-09

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