EP2711164A1 - Apparatus and method for opening an end area of a tubular sack body - Google Patents
Apparatus and method for opening an end area of a tubular sack body Download PDFInfo
- Publication number
- EP2711164A1 EP2711164A1 EP12185656.1A EP12185656A EP2711164A1 EP 2711164 A1 EP2711164 A1 EP 2711164A1 EP 12185656 A EP12185656 A EP 12185656A EP 2711164 A1 EP2711164 A1 EP 2711164A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- center line
- bottom center
- angle
- oblique direction
- bag body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 13
- 239000004033 plastic Substances 0.000 claims description 8
- 229920003023 plastic Polymers 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- -1 polyethylene Polymers 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 4
- 239000002985 plastic film Substances 0.000 claims description 4
- 229920006255 plastic film Polymers 0.000 claims description 4
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 description 8
- 238000003892 spreading Methods 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000006223 plastic coating Substances 0.000 description 3
- 125000004122 cyclic group Chemical group 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B70/00—Making flexible containers, e.g. envelopes or bags
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B70/00—Making flexible containers, e.g. envelopes or bags
- B31B70/003—Opening or distending bags
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B2150/00—Flexible containers made from sheets or blanks, e.g. from flattened tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B2150/00—Flexible containers made from sheets or blanks, e.g. from flattened tubes
- B31B2150/001—Flexible containers made from sheets or blanks, e.g. from flattened tubes with square or cross bottom
- B31B2150/0014—Flexible containers made from sheets or blanks, e.g. from flattened tubes with square or cross bottom having their openings facing transversally to the direction of movement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B2150/00—Flexible containers made from sheets or blanks, e.g. from flattened tubes
- B31B2150/003—Flexible containers made from sheets or blanks, e.g. from flattened tubes made from tubular sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B2160/00—Shape of flexible containers
- B31B2160/20—Shape of flexible containers with structural provision for thickness of contents
Definitions
- the invention relates to an apparatus and a method for opening an end region of a tubular bag body, which end region extends between an open hose end and a bottom center line, with a transport device on which the bag body with adjacent hose walls with a transport speed in a transport direction is transportable, wherein Bottom center line is aligned in the transport direction, and with transversely to the transport direction reciprocally driven suction devices that are movable towards each other until they rest against the tube walls of the intermediate end portion of the bag body and thereafter while exerting a suction force on the respective tube wall away from each other , whereby they pull the tube walls away from each other.
- Chest bags also called cross-bottom bags, are bags of cuboidal shape which are made in bag making machines by providing tubular bag bodies whose end portions are opened and folded into cross bottoms. The bag bodies are guided lying flat when folding through the clothing plant, so that the tube walls of the tubular bag body abut each other, especially at the end portions of the tubular bag body.
- the two tube walls are separated from each other at the end regions of the tubular bag body and folded over 180 ° with respect to each other, usually one of the two tube walls is folded over with the help of a spreading tool as a side flap on itself, creating an open bottom, in which the another hose wall forms a second side flap.
- valve sheets can be inserted for the production of box valve bags, which are formed by further folding operations to a valve through which the bags can be filled by means of a filler neck.
- the final bottom configuration is made by overlapping the bottom side flaps.
- the overlapping bottom side flaps are glued or welded depending on the material.
- bottom cover sheets can be placed on the overlapping bottom side flaps and adhesively bonded or welded thereto.
- the bottom opening device with the aid of which the two layers are separated from one another at the end region of the tubular bag body, is designed as a pneumatic bottom opening device in which suction devices lying opposite each other with respect to the material layers to be separated are provided, which engage the tube walls of the bag body and the sequence are moved apart, whereby the tube walls are separated from each other, so that the spreading tool can intervene therebetween.
- Known floor opening devices such as the AT 408 427 B can be seen, are relatively large-sized constructions in which a linear opening movement is realized by means of cylinder / piston units. It is obvious that such a solution is relatively bulky and cost and maintenance intensive.
- the present invention is therefore an object of the invention to provide a bottom opening device for Sackkon Anlagenionsanlagen, with a continuous operation of the system is reliably ensured at a high production rate, the bottom opening device should be simple, inexpensive and robust and wear resistant as possible. Furthermore, the bottom opening device should also allow the safe opening of different widths of floors and a correct transfer to the following processing station and of course be suitable for continuous operation.
- the present invention solves this object by further developing the above-mentioned device and the method mentioned above for opening an end portion of a tubular bag body by the suction means in addition to their transverse mobility in an oblique direction, which is aligned on the one hand in the transport direction and on the other hand at an angle to the bottom center line , designed to be movable back and forth.
- the point of application of the suction devices on the tube walls can be controlled with respect to the mid-center line and even adjusted during operation, whereby the opening device can be adapted to end regions of different lengths which are formed into bag bases of different widths.
- the opening device according to the invention it is possible with the opening device according to the invention to adjust the points of application of the suction devices on the tube walls to be separated so that they are as close as possible to the outer end of the bag body, whereby the precision of the opening operation is increased.
- the device according to the invention is particularly suitable for processing bag bodies made of stretched plastic tapes and / or plastic film, wherein the plastic material is preferably selected from polyethylene, polypropylene and / or PET. Also composites of the materials mentioned can be processed, and the bag body can be provided with a plastic coating.
- the web of stretched plastic tape may be provided with a plastic coating to achieve the tightness of the web, to improve printability, and to adjust other desirable properties. Sacks of stretched plastic tape have superior strength over paper or plastic film bags, but tend to slip in the manufacturing process and are also harder to fold than, for example, paper. Therefore, it is of particular advantage that these bag bodies can be handled by the present invention.
- bottoms can be formed at both opposite end regions of the tubular sack body, or a bottom can be formed only at one end region.
- the opening device according to the invention can be adapted particularly easy for the mounting of different wide bottoms and different width bag bodies become.
- a shallow angle is chosen against the mid-ground line, and for steeper soils, a steeper angle can be set.
- the precision of the opening operation is increased when the angle of the oblique direction to the center of the ground line is less than 45 °, preferably less than 30 °.
- the opening device regardless of the setting of the angle described above, correctly transfers the opened end region to a subsequent processing station, in particular to spreading tools, without an unguided or undefined state between the opening of the end region and its further processing must be accepted.
- the suction devices are moved during their contact with the tube walls at a speed in the oblique direction whose speed component in the transport direction is equal to the transport speed.
- the suction devices are moved transversely to the transport direction by means of transverse guide means
- the transverse guide means preferably comprise rails, pivot arms and / or transversely arranged to the transport direction piston-cylinder assemblies arranged at the free ends of the piston suction devices
- the inclined guide means preferably comprise rails, pivot arms and / or obliquely arranged piston-cylinder arrangements with suction devices arranged at the free ends of the pistons.
- the opposing suction means are each arranged on a holder which is hingedly connected to first ends of two parallel pivot arms, of which at least one is driven to pivot transversely to the transport direction, wherein second ends of the pivot arms are pivotally connected to a carrier carriage, which carrier carriage in a guide rail in the oblique direction is driven to and fro.
- a pivot arm is driven pivotably via an angle lever.
- This embodiment of the device according to the invention in addition to a relatively simple, inexpensive construction has the advantage that due to the parallelogram geometry of the structure of holder, pivot arms and support carriage during pivoting this Parallelogrammmaschine in the course of the opening operation, the orientation of the suction is maintained with respect to the separate tube walls so that even if relatively wide end portions are raised, a secure and torsion-free opening or separation of the adjoining tube walls takes place and in the later processing the spreading tools can reliably intervene.
- the pivot arms are displaceable together in the oblique direction and can therefore in continuous operation of a bag making machine in a simple manner during the opening process with the continuously conveyed bag bodies be moved.
- the pivot arms of the respective parallelogram unit can be driven in any desired manner. It is conceivable to actuate the pivot arms by means of servo motors or motor / gear groups, hydraulic or pneumatic cylinder-piston units or via cables. According to a preferred embodiment of the present invention, however, it is provided that in each case a pivoting arm is driven via an angle lever and connected to the angle levers rods which are hinged to a control slide. Due to the parallelogram arrangement of the pivot lever, it is sufficient to actuate only a single pivot arm of a parallelogram unit, since the other elements of the parallelogram are forcibly guided.
- This preferred embodiment of the drive with an angle lever, rods and control slide is robust and maintenance-free.
- the pivoting of the Pivot lever by means of control slide which is independent of the carriage slidable, represents a rectilinear displacement operation.
- the carrier carriage and the control slide are guided on a common guide rail.
- peripheral drives in particular toothed belt drives, are preferred as drives for the carrier slide and the control slide.
- Timing belt drives are known to be reliable even with long running times and can be quickly replaced if necessary without the need for specially trained personnel.
- the displacement of the carrier carriage and the control slide could also be done by means of cylinder / piston drives, spindle drives or servomotors.
- the present invention is preferably further developed such that opposing suction devices are arranged offset from one another, whereby they attack each other offset to the tube walls to be separated. With such a positioning of the suction devices to each other succeeds a reliable separation of the tube walls.
- the guide rail is adjustable by means of adjustable storage with an adjustable angle in the oblique direction to the bottom center line.
- the adjustable bearing comprises elongated holes with recesses defined by recesses, a rapid change between different settings of the angle to the ground center line is possible. Switching between positions can be done with simple tools and, if necessary, by a single person.
- a particularly advantageous embodiment can be achieved if the mounting of the guide rail is adjustable by means of a motor drive.
- the adjustment of the angle can be accomplished without the use of tools, and it also it is possible to make the setting computer-controlled to the desired bottom width, even during operation of the bag making machine.
- FIG. 1 to FIG. 3 the essential features of the device 1 according to the invention shown only schematically.
- the device 1 comprises a transport device 2 in the form of a conveyor belt which moves continuously at a transport speed V in a transport direction T.
- a transport device 2 On the transport device 2 are tubular bag body 10 in flat-lying state with its longitudinal extent L transverse to the transport direction T.
- the bag body 10 are secured on the conveyor belt by means not shown holding against slipping.
- the tubular bag body 10 are made for example of fabric of stretched plastic tape.
- the plastic tapes may comprise a polyethylene or polypropylene or PET material.
- the fabric has a plastic coating.
- the tubular bag body 10 may alternatively be made of plastic film.
- the tubular bag body 10 has two opposing open end portions 10e, 10f.
- the end portion 10e extending between an open tube end 10k and a bottom center line 10j is to be formed into a cross bottom.
- the end portion 10f may also be formed into a cross bottom in the same manner as the end portion 10e, thereby producing a box bag or box valve bag.
- FIG. 1 It can be seen that the tubular bag body 10 initially rests flat on the transport device 2 in a first plane ⁇ 1. In this flat lying state, a first and a second tube wall 10a, 10b abut each other. Then, the end portion 10e of the tubular bag body 10 is brought by means of a bottom center bar 12 and baffles 11a, 11b along a bottom center line 10j from the first plane ⁇ 1 of the flat bag body in a substantially orthogonal extending second plane ⁇ 2. It should be mentioned at this point that the formation of the soil is possible even without this folding process.
- FIG. 2 shows the bag body 10 with end portion 10e folded completely along the bottom center line 10j orthogonally upwards (into the second plane ⁇ 2).
- the floor center strip 12 continues in the transport direction T and now, in cooperation with the deflection plate 11a, has the task of holding the end area 10e of the bag body 10 folded into the second plane ⁇ 2 in this angular position relative to the first plane ⁇ 1, in which the bag body 10 lies ,
- the opening device 1 further comprises two suction devices 13, 14, which are transversely movable transversely to the transport direction T on symbolically illustrated transverse guide means 15, 16.
- the transverse guide means 15, 16 may be formed, for example, as rails or pivot arms.
- transverse guide means 15, 16 piston-cylinder assemblies, wherein the suction means 13, 14 sit at the free ends of the pistons and in such a way transversely to the transport direction T back and forth are movable.
- the transverse guide means 15, 16 are by means of inclined guide means 17, 18 in an oblique direction S, which is aligned on the one hand in the transport direction T and on the other hand at an angle ⁇ to the bottom center line 10j or the imaginary extension of the bottom centerline, back and forth.
- the bottom center line 10j or its imaginary extension is aligned in the plane ⁇ 1 in the transport direction T.
- the oblique guide means 17, 18 may be formed, for example, as rails, pivot arms or piston-cylinder arrangements.
- FIG. 2 a process step is shown, in which the two suction devices 13, 14 have been brought into contact with the first tube wall 10a and the second tube wall 10b from opposite sides in the end region 10e.
- a vacuum is generated at the suction devices 13, 14, so that the first suction device 13 sucks in the first hose wall 10a and the second suction device 14 sucks in the second hose wall 10b.
- the suction devices 13, 14, when in contact with the tube walls 10a, 10b are moved at a speed in the oblique direction S whose speed component in the transporting direction T is equal to the transporting speed V, so that There can be no distortion of the tube walls 10a, 10b.
- the two suction devices 13, 14 start to move away from one another transversely to the transport direction V (arrows P1 or P2), in each case pulling a hose wall 10a, 10b with it and thereby open the end portion 10e of the tubular bag body 10.
- the suction devices 13, 14 in the oblique direction S can be the point of application of the suction devices 13, 14 on the tube walls 10a, 10b with respect to the bottom center line Control 10j and even adjust during operation, whereby the opening device 1 at different lengths end portions, which are formed to different widths bag bottoms, is customizable.
- the attack points of the suction devices 13, 14 to be separated at the tube walls 10a, 10b to be adjusted so that they are as close to the outer end of the bag body, whereby the precision of the opening operation is increased. It does not matter whether the end portion 10e is folded before opening along the bottom center line 10j with respect to the rest of the bag body 10 (as shown here) or not. If the end region 10e had not yet been folded upon opening, that is to say if it were still in the plane ⁇ 1, then the opening device would be arranged rotated so that the suction devices would engage from above and below. It only needs to be ensured that at least part of the end region 10e is exposed.
- FIG. 3 shows the end portion 10e of the tubular bag body 10 in the open state in which a clearance 10g is formed between the tube walls 10a, 10b. It can also be seen in this illustration that in the meantime the vacuum has been switched off by the suction devices 13, 14 and the two suction devices 13, 14 have disengaged from the hose walls 10a, 10b and can therefore be moved back in the oblique direction S. to be opened for opening the end portion of the next bag body.
- the further processing of the end region 10e for the formation of the soil takes place at a downstream of the bottom opening device processing station, which in FIG. 3 schematically with generally designated 19 and is not the subject of the present invention.
- FIGS. 4 to 6 a bottom opening unit as part of the opening device 1 according to the invention.
- This bottom opening unit 20 is in Fig. 4 in a perspective view, in Fig. 5 in a somewhat simplified soffit and in Fig. 6 shown in a schematic side view. For better clarity, see FIG. 5 only one (14) of the two suction devices shown.
- the suction devices 13, 14 are each arranged on a holder 3 and facing each other. Since the bottom opening unit 20 is constructed largely symmetrical, the relevant components are hereinafter called only once for the purpose of description. However, it is obvious that components of each side not described are identical in construction and function.
- the holder 3 is pivotally connected to first ends of two parallel pivot arms 4, 5, of which at least one (here the pivot arm 4) is driven to be pivotable transversely to the transport direction T.
- the second ends of the pivot arms 4, 5 are pivotally connected to a carrier carriage 7, which carrier carriage 7 is driven to move back and forth in a guide rail 22 in the oblique direction S.
- the bottom opening unit 20 is fixed to a support 30 so that the guide rail 22 is aligned in the transport direction T and parallel to the oblique direction S (see FIG Fig. 6 ).
- the holder 3, the two pivot arms 4 and 5 and the carrier slide 7 form a parallelogram unit 8, in which the parallelogram configuration is maintained during pivoting.
- the pivoting of the pivot arms 4 and 5 takes place according to the device according to the invention FIG. 4 via an angle lever 23 attached to the swivel arm 4, which lever is connected to a rod 9, which is articulated to a control carriage 21.
- the control carriage 21 is mounted in the guide rail 22 to move back and forth.
- the carrier carriage 7 and the control carriage 21 are driven by means of a toothed belt drive 24, 25.
- the line A1 is parallel to the longitudinal axis of the guide rail 22 and parallel to the oblique direction S, whereby the guide rail 22 together with the control slide 21, the carriage 7, the linkage 9, the Parallelogrammtechniken 8 and disposed thereon suction devices 13 and 14 at an angle ⁇ are moved to the bottom center line 10j or level ⁇ 1, which allows the precise opening of different width bag bodies 10. It is important here that the guide rail 22 is parallel to the oblique direction S. To change the angle ⁇ , the bottom opening unit 20 is screwed with its upper recesses 28 on the support 30, whereby two bearing points are defined, which are interconnected by the line A2.
- the self-adjusting angle ⁇ of the longitudinal axis of the guide rail 22 and thus also the oblique direction S to the bottom center line 10j is smaller by an angle ⁇ than in the first bearing. It remains ensured despite different angle settings that the bottom opening unit 20 regardless of the above-described adjustment of the angle ⁇ opens the end portion 10e so that it is passed without an unguided or undefined state to the subsequent spreading tools.
Landscapes
- Supplying Of Containers To The Packaging Station (AREA)
- External Artificial Organs (AREA)
- Bag Frames (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung und ein Verfahren zum Öffnen eines Endbereichs eines schlauchförmigen Sackkörpers, welcher Endbereich sich zwischen einem offenen Schlauchkörperende und einer Bodenmittenlinie erstreckt, mit einer Transporteinrichtung, auf der der Sackkörper mit aneinanderliegenden Schlauchwänden mit einer Transportgeschwindigkeit in einer Transportrichtung transportierbar ist, wobei die Bodenmittenlinie in Transportrichtung ausgerichtet ist, und mit quer zur Transportrichtung hin und her beweglich angetriebenen Saugeinrichtungen, die aufeinander zu bewegbar sind, bis sie an den Schlauchwänden des dazwischen befindlichen Endbereichs des Sackkörpers anliegen und danach unter Ausübung einer Saugkraft auf die jeweilige Schlauchwand voneinander weg bewegbar sind, wodurch sie die Schlauchwände voneinander wegziehen.The invention relates to an apparatus and a method for opening an end region of a tubular bag body, which end region extends between an open hose end and a bottom center line, with a transport device on which the bag body with adjacent hose walls with a transport speed in a transport direction is transportable, wherein Bottom center line is aligned in the transport direction, and with transversely to the transport direction reciprocally driven suction devices that are movable towards each other until they rest against the tube walls of the intermediate end portion of the bag body and thereafter while exerting a suction force on the respective tube wall away from each other , whereby they pull the tube walls away from each other.
Kastensäcke, auch Kreuzbodensäcke genannt, sind Säcke von quaderförmiger Gestalt, die in Sackkonfektionsanlagen hergestellt werden, indem schlauchförmige Sackkörper bereitgestellt werden, deren Endbereiche geöffnet und zu Kreuzböden gefaltet werden. Die Sackkörper werden beim Falten flach liegend durch die Konfektionsanlage geführt, so dass die Schlauchwände des schlauchförmigen Sackkörpers aneinander anliegen, insbesondere auch an den Endbereichen des schlauchförmigen Sackkörpers. Zur Bodenbildung werden die beiden Schlauchwände an den Endbereichen des schlauchförmigen Sackkörpers voneinander getrennt und in Bezug aufeinander um 180° umgeklappt, wobei zumeist eine der beiden Schlauchwände mit Hilfe eines Spreizwerkzeugs als Seitenklappe auf sich selbst umgeklappt wird, wodurch ein offener Boden entsteht, bei dem die andere Schlauchwand eine zweite Seitenklappe bildet. Durch das Umklappen einer Schlauchwand am Endbereich des schlauchförmigen Sackkörpers entsteht am vorderen und hinteren Teil dieses Endbereichs jeweils ein dreieckiger Umschlag. Diesen Vorgang nennt man in der Fachsprache auch "Aufziehen". In weiterer Folge können zur Herstellung von Kastenventilsäcken Ventilzettel eingelegt werden, die durch weitere Faltungsvorgänge zu einem Ventil ausgebildet werden, durch das hindurch die Säcke mittels eines Füllstutzens befüllbar sind. Die endgültige Bodenkonfiguration wird durch einander überlappendes Einschlagen der Bodenseitenklappen hergestellt. Die überlappenden Bodenseitenklappen werden je nach Material verklebt oder verschweißt. Alternativ oder zusätzlich können Bodendeckblätter auf die überlappenden Bodenseitenklappen aufgelegt und mit diesen verklebt oder verschweißt werden.Chest bags, also called cross-bottom bags, are bags of cuboidal shape which are made in bag making machines by providing tubular bag bodies whose end portions are opened and folded into cross bottoms. The bag bodies are guided lying flat when folding through the clothing plant, so that the tube walls of the tubular bag body abut each other, especially at the end portions of the tubular bag body. For bottom formation, the two tube walls are separated from each other at the end regions of the tubular bag body and folded over 180 ° with respect to each other, usually one of the two tube walls is folded over with the help of a spreading tool as a side flap on itself, creating an open bottom, in which the another hose wall forms a second side flap. By folding a tube wall at the end of the tubular bag body is formed at the front and rear of this end portion each have a triangular envelope. This process is called in the jargon also "Aufziehen". As a result, valve sheets can be inserted for the production of box valve bags, which are formed by further folding operations to a valve through which the bags can be filled by means of a filler neck. The final bottom configuration is made by overlapping the bottom side flaps. The overlapping bottom side flaps are glued or welded depending on the material. Alternatively or additionally, bottom cover sheets can be placed on the overlapping bottom side flaps and adhesively bonded or welded thereto.
Eine entsprechende Sackkonfektionsanlage ist in der
Dieser Nachteil wurde durch die in der
In der
Zum Öffnen der schlauchförmigen Sackkörper wäre es wünschenswert, eine geradlinige Öffnungsbewegung auszuführen, um eine möglichst gleichmäßige Trennung der Schlauchwände vor und hinter den Saugeinrichtungen zu erreichen, was sicherstellt, dass in der Folge ein Spreizwerkzeug problemlos in den geöffneten Endbereich des schlauchförmigen Sackkörpers eingeführt werden kann. Das gilt insbesondere für das Aufziehen besonders breiter Böden, bei denen eine ungleichmäßige Öffnungsbewegung eines einfachen Schwenkarmes zu einer ausgeprägten Verwindung der Materiallagen führt und somit das Einführen der Spreizwerkzeuge erheblich erschwert.To open the tubular bag body, it would be desirable to perform a rectilinear opening movement to achieve the most uniform separation of the tube walls in front of and behind the suction devices, which ensures that in the result an expansion tool can be easily inserted into the open end of the tubular bag body. This applies in particular to the mounting of particularly wide floors, in which an uneven opening movement of a simple pivoting arm leads to a pronounced distortion of the material layers and thus considerably complicates the insertion of the spreading tools.
Bekannte Bodenöffnungseinrichtungen, wie sie beispielsweise der
Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, eine Bodenöffnungseinrichtung für Sackkonfektionsanlagen anzugeben, mit der ein kontinuierlicher Betrieb der Anlage bei einer hohen Produktionsrate zuverlässig gewährleistet ist, wobei die Bodenöffnungseinrichtung einfach, kostengünstig und robust aufgebaut und möglichst verschleißfest sein soll. Weiters soll die Bodenöffnungseinrichtung auch das sichere Öffnen von unterschiedlich breiten Böden und eine korrekte Übergabe an die folgende Bearbeitungsstation ermöglichen und selbstverständlich für den kontinuierlichen Betrieb geeignet sein.The present invention is therefore an object of the invention to provide a bottom opening device for Sackkonfektionsanlagen, with a continuous operation of the system is reliably ensured at a high production rate, the bottom opening device should be simple, inexpensive and robust and wear resistant as possible. Furthermore, the bottom opening device should also allow the safe opening of different widths of floors and a correct transfer to the following processing station and of course be suitable for continuous operation.
Die vorliegende Erfindung löst diese Aufgabe durch Fortbilden der eingangs erwähnten Vorrichtung und des eingangs erwähnten Verfahrens zum Öffnen eines Endbereichs eines schlauchförmigen Sackkörpers, indem die Saugeinrichtungen zusätzlich zu ihrer Querbeweglichkeit auch in einer Schrägrichtung, die einerseits in Transportrichtung und andererseits in einem Winkel zur Bodenmittenlinie ausgerichtet ist, hin und her bewegbar ausgeführt sind. Durch diese Bewegung der Saugeinrichtungen in der Schrägrichtung lässt sich der Angriffspunkt der Saugeinrichtungen an den Schlauchwänden in Bezug auf die Bodenmittenlinie steuern und sogar im laufenden Betrieb verstellen, wodurch die Öffnungsvorrichtung an unterschiedlich lange Endbereiche, die zu unterschiedlich breiten Sackböden ausgebildet werden, anpassbar ist. Weiters ist es mit der erfindungsgemäßen Öffnungsvorrichtung möglich, die Angriffspunkte der Saugeinrichtungen an den zu trennenden Schlauchwänden so einzustellen, dass diese möglichst nahe am äußeren Ende des Sackkörpers liegen, wodurch die Präzision des Öffnungsvorgangs erhöht wird.The present invention solves this object by further developing the above-mentioned device and the method mentioned above for opening an end portion of a tubular bag body by the suction means in addition to their transverse mobility in an oblique direction, which is aligned on the one hand in the transport direction and on the other hand at an angle to the bottom center line , designed to be movable back and forth. As a result of this movement of the suction devices in the oblique direction, the point of application of the suction devices on the tube walls can be controlled with respect to the mid-center line and even adjusted during operation, whereby the opening device can be adapted to end regions of different lengths which are formed into bag bases of different widths. Furthermore, it is possible with the opening device according to the invention to adjust the points of application of the suction devices on the tube walls to be separated so that they are as close as possible to the outer end of the bag body, whereby the precision of the opening operation is increased.
Die erfindungsgemäße Vorrichtung ist besonders zur Verarbeitung von Sackkörpern aus einem Gewebe aus verstreckten Kunststoffbändchen und/oder aus Kunststofffolie geeignet, wobei das Kunststoffmaterial vorzugsweise aus Polyethylen, Polypropylen und/oder PET ausgewählt ist. Auch Verbunde aus den genannten Materialien können verarbeitet werden, und die Sackkörper können mit einer Kunststoffbeschichtung versehen sein. Zum Beispiel kann das Gewebe aus verstreckten Kunststoffbändchen mit einer Kunststoffbeschichtung ausgestattet sein, um die Dichtheit des Gewebes zu erzielen, die Bedruckbarkeit zu verbessern und andere erwünschte Eigenschaften einzustellen. Säcke aus Gewebe aus verstreckten Kunststoffbändchen weisen gegenüber Papier- oder Kunststofffoliensäcken eine überragende Festigkeit auf, neigen jedoch im Herstellungsverfahren zum Verrutschen und sind auch schwerer zu falten als beispielsweise Papier. Deshalb ist es von besonderem Vorteil, dass durch die vorliegende Erfindung auch diese Sackkörper handhabbar sind.The device according to the invention is particularly suitable for processing bag bodies made of stretched plastic tapes and / or plastic film, wherein the plastic material is preferably selected from polyethylene, polypropylene and / or PET. Also composites of the materials mentioned can be processed, and the bag body can be provided with a plastic coating. For example, the web of stretched plastic tape may be provided with a plastic coating to achieve the tightness of the web, to improve printability, and to adjust other desirable properties. Sacks of stretched plastic tape have superior strength over paper or plastic film bags, but tend to slip in the manufacturing process and are also harder to fold than, for example, paper. Therefore, it is of particular advantage that these bag bodies can be handled by the present invention.
Je nach Anforderung an die herzustellenden Säcke können an beiden einander gegenüberliegenden Endbereichen des schlauchförmigen Sackkörpers Böden ausgebildet werden, oder nur an einem Endbereich ein Boden ausgebildet werden.Depending on the requirements of the sacks to be produced, bottoms can be formed at both opposite end regions of the tubular sack body, or a bottom can be formed only at one end region.
Weitere Ausführungsformen, Vorteile und Merkmale der Erfindung gehen aus den Ansprüchen und der nachfolgenden Beschreibung von Ausführungsbeispielen hervor.Further embodiments, advantages and features of the invention will become apparent from the claims and the following description of exemplary embodiments.
Wenn, wie dies einer bevorzugen Ausführungsform der vorliegenden Erfindung entspricht, der Winkel der Schrägrichtung zur Bodenmittenlinie bzw. die gedachte Verlängerung der Bodenmittenlinie über den Sackkörper hinaus verstellbar ist, kann die erfindungsgemäße Öffnungsvorrichtung besonders einfach für das Aufziehen von unterschiedlichen breiten Böden und unterschiedlich breiten Sackkörpern angepasst werden. Für schmale Böden wird hierbei ein flacher Winkel gegen die Bodenmittenlinie gewählt, und für breitere Böden kann ein steilerer Winkel eingestellt werden. Die Präzision des Öffnungsvorgangs wird erhöht, wenn der Winkel der Schrägrichtung zur Bodenmittenlinie kleiner als 45°, vorzugsweise kleiner als 30° ist. Bei einer solchen Bauform ist weiters sichergestellt, dass die Öffnungseinrichtung unabhängig von der oben beschriebenen Einstellung des Winkels den geöffneten Endbereich korrekt an eine nachfolgende Bearbeitungsstation, insbesondere an Spreizwerkzeuge übergibt, ohne dass zwischen dem Öffnen des Endbereichs und seiner weiteren Bearbeitung ein ungeführter bzw. undefinierter Zustand in Kauf genommen werden muss.If, as corresponds to a preferred embodiment of the present invention, the angle of the oblique direction to the bottom center line or the imaginary extension of the bottom center line is adjustable beyond the bag body, the opening device according to the invention can be adapted particularly easy for the mounting of different wide bottoms and different width bag bodies become. For narrow soils, a shallow angle is chosen against the mid-ground line, and for steeper soils, a steeper angle can be set. The precision of the opening operation is increased when the angle of the oblique direction to the center of the ground line is less than 45 °, preferably less than 30 °. In such a design, it is further ensured that the opening device, regardless of the setting of the angle described above, correctly transfers the opened end region to a subsequent processing station, in particular to spreading tools, without an unguided or undefined state between the opening of the end region and its further processing must be accepted.
Um zu vermeiden, dass sich die Schlauchwände des Endbereichs des Sackkörpers während des Öffnungsvorgangs verziehen, ist es günstig, wenn die Saugeinrichtungen während ihres Kontakts mit den Schlauchwänden mit einer Geschwindigkeit in der Schrägrichtung bewegt werden, deren Geschwindigkeitskomponente in der Transportrichtung gleich der Transportgeschwindigkeit ist.In order to avoid that the tube walls of the end portion of the bag body warp during the opening operation, it is favorable if the suction devices are moved during their contact with the tube walls at a speed in the oblique direction whose speed component in the transport direction is equal to the transport speed.
Robuste und wartungsarme Ausführungsformen der erfindungsgemäßen Öffnungsvorrichtung werden erzielt, wenn die Saugeinrichtungen mittels Querführungsmitteln quer zur Transportrichtung bewegt werden, wobei die Querführungsmittel vorzugsweise Schienen, Schwenkarme und/oder quer zur Transportrichtung angeordnete Kolben-Zylinder-Anordnungen mit an den freien Enden der Kolben angeordneten Saugeinrichtungen umfassen. Für denselben Zweck ist es vorteilhaft, die Bewegung der Saugeinrichtungen in der Schrägrichtung mittels Schrägführungsmitteln zu realisieren, wobei die Schrägführungsmittel vorzugsweise Schienen, Schwenkarme und/oder in der Schrägrichtung angeordnete Kolben-Zylinder-Anordnungen mit an den freien Enden der Kolben angeordneten Saugeinrichtungen umfassen.Robust and low-maintenance embodiments of the opening device according to the invention are achieved when the suction devices are moved transversely to the transport direction by means of transverse guide means, wherein the transverse guide means preferably comprise rails, pivot arms and / or transversely arranged to the transport direction piston-cylinder assemblies arranged at the free ends of the piston suction devices , For the same purpose, it is advantageous to realize the movement of the suction devices in the oblique direction by means of inclined guide means, wherein the inclined guide means preferably comprise rails, pivot arms and / or obliquely arranged piston-cylinder arrangements with suction devices arranged at the free ends of the pistons.
Bei einer aufgrund ihrer Robustheit, Schnelligkeit und vielfachen Verstellmöglichkeit während des laufenden Betriebs besonders bevorzugten Ausführungsform der Erfindung sind die einander gegenüberliegenden Saugeinrichtungen jeweils an einem Halter angeordnet, der gelenkig mit ersten Enden von zwei parallelen Schwenkarmen verbunden ist, von denen zumindest einer quer zur Transportrichtung verschwenkbar angetrieben ist, wobei zweite Enden der Schwenkarme gelenkig mit einem Trägerschlitten verbunden sind, welcher Trägerschlitten in einer Führungsschiene in der Schrägrichtung hin und her bewegbar angetrieben ist. Zweckmäßig wird jeweils ein Schwenkarm über einen Winkelhebel verschwenkbar angetrieben.In a particularly preferred embodiment of the invention because of its robustness, speed and multiple adjustment during operation, the opposing suction means are each arranged on a holder which is hingedly connected to first ends of two parallel pivot arms, of which at least one is driven to pivot transversely to the transport direction, wherein second ends of the pivot arms are pivotally connected to a carrier carriage, which carrier carriage in a guide rail in the oblique direction is driven to and fro. Suitably, in each case a pivot arm is driven pivotably via an angle lever.
Diese Ausführungsform der erfindungsgemäßen Vorrichtung bietet neben einem relativ einfachen, kostengünstigen Aufbau den Vorteil, dass aufgrund der Parallelogramm-Geometrie des Aufbaus aus Halter, Schwenkarmen und Trägerschlitten beim Verschwenken dieser Parallelogrammeinheit im Zuge des Öffnungsvorgangs die Ausrichtung der Saugeinrichtungen bezüglich der voneinander zu trennenden Schlauchwände beibehalten wird, sodass selbst dann, wenn relativ breite Endbereiche aufgezogen werden, ein sicheres und verwindungsfreies Öffnen bzw. Trennen der aneinander anliegenden Schlauchwände erfolgt und in der späteren Bearbeitung die Spreizwerkzeuge zuverlässig eingreifen können.This embodiment of the device according to the invention, in addition to a relatively simple, inexpensive construction has the advantage that due to the parallelogram geometry of the structure of holder, pivot arms and support carriage during pivoting this Parallelogrammeinheit in the course of the opening operation, the orientation of the suction is maintained with respect to the separate tube walls so that even if relatively wide end portions are raised, a secure and torsion-free opening or separation of the adjoining tube walls takes place and in the later processing the spreading tools can reliably intervene.
Da die die Halter mit den Saugeinrichtungen tragenden Schwenkarme an einem gemeinsamen Trägerschlitten befestigt sind, der in der Schrägrichtung verfahrbar ist, sind die Schwenkarme gemeinsam in der Schrägrichtung verschiebbar und können daher im kontinuierlichen Betrieb einer Sackkonfektionsanlage in einfacher Weise während des Öffnungsvorganges mit den kontinuierlich geförderten Sackkörpern mitbewegt werden.Since the holders carrying the holders with the suction means are mounted on a common carrier carriage which is movable in the oblique direction, the pivot arms are displaceable together in the oblique direction and can therefore in continuous operation of a bag making machine in a simple manner during the opening process with the continuously conveyed bag bodies be moved.
Indem der Trägerschlitten in einer Führungsschiene in der Schrägrichtung hin und her bewegbar ist, wird eine einwandfreie Führung entlang praktisch beliebig langer Verschiebewege mit hohen Verschiebegeschwindigkeiten des Trägerschlittens auf der Führungsschiene erzielt. Somit lassen sich präzise Öffnungsvorgänge auch bei entsprechend hohen Fördergeschwindigkeiten der Sackkörper in der Sackkonfektionsanlage durchführen.By the carrier carriage in a guide rail in the oblique direction is movable back and forth, a perfect guidance along virtually any length of displacement paths is achieved with high displacement speeds of the carrier carriage on the guide rail. Thus, precise opening operations can be carried out even with correspondingly high conveying speeds of the bag body in the bag making machine.
Prinzipiell können die Schwenkarme der jeweiligen Parallelogrammeinheit auf jede beliebige Art angetrieben werden. Hierbei ist es denkbar, die Schwenkarme mittels Stellmotoren oder Motor/Getriebegruppen, hydraulischer oder pneumatischer Zylinder-Kolbeneinheiten oder auch über Seilzüge zu betätigen. Gemäß einer bevorzugten Ausführungsform der vorliegenden Erfindung ist jedoch vorgesehen, dass jeweils ein Schwenkarm über einen Winkelhebel und über mit den Winkelhebeln verbundene Stangen, die an einem Steuerschlitten angelenkt sind, angetrieben wird. Aufgrund der Parallelogrammanordnung der Schwenkhebel reicht es aus, jeweils nur einen einzigen Schwenkarm einer Parallelogrammeinheit zu betätigen, da die übrigen Elemente des Parallelogramms zwangsgeführt sind. Diese bevorzugte Ausführung des Antriebs mit einem Winkelhebel, Stangen und Steuerschlitten ist robust und wartungsfrei. Die Verschwenkung der Schwenkhebel mittels Steuerschlitten, der unabhängig vom Trägerschlitten verschiebbar ist, stellt einen geradlinigen Verschiebungsvorgang dar.In principle, the pivot arms of the respective parallelogram unit can be driven in any desired manner. It is conceivable to actuate the pivot arms by means of servo motors or motor / gear groups, hydraulic or pneumatic cylinder-piston units or via cables. According to a preferred embodiment of the present invention, however, it is provided that in each case a pivoting arm is driven via an angle lever and connected to the angle levers rods which are hinged to a control slide. Due to the parallelogram arrangement of the pivot lever, it is sufficient to actuate only a single pivot arm of a parallelogram unit, since the other elements of the parallelogram are forcibly guided. This preferred embodiment of the drive with an angle lever, rods and control slide is robust and maintenance-free. The pivoting of the Pivot lever by means of control slide, which is independent of the carriage slidable, represents a rectilinear displacement operation.
Zur Verringerung der Anzahl der Bauteile der erfindungsgemäßen Vorrichtung ist es zweckmäßig, wenn der Trägerschlitten und der Steuerschlitten auf einer gemeinsamen Führungsschiene geführt sind.To reduce the number of components of the device according to the invention, it is expedient if the carrier carriage and the control slide are guided on a common guide rail.
Aufgrund ihrer Verlässlichkeit und geringen Verschleißanfälligkeit werden bevorzugt umlaufende Antriebe, insbesondere Zahnriemenantriebe, als Antriebe für den Trägerschlitten und den Steuerschlitten bevorzugt. Zahnriemenantriebe sind auch bei langen Laufzeiten als zuverlässig bekannt und können bei Bedarf schnell ausgewechselt werden, ohne dass hierfür besonders geschultes Personal nötig wäre.Because of their reliability and low susceptibility to wear, preferably peripheral drives, in particular toothed belt drives, are preferred as drives for the carrier slide and the control slide. Timing belt drives are known to be reliable even with long running times and can be quickly replaced if necessary without the need for specially trained personnel.
Alternativ dazu könnte die Verschiebung des Trägerschlittens und des Steuerschlittens auch mittels Zylinder/Kolbenantrieben, Spindelantrieben oder Stellmotoren erfolgen.Alternatively, the displacement of the carrier carriage and the control slide could also be done by means of cylinder / piston drives, spindle drives or servomotors.
Insbesondere dann, wenn eine Bodenöffnungseinrichtung in einer Sackkonfektionsanlage für Sackkörper aus luftdurchlässigen Geweben eingesetzt werden soll, besteht die Gefahr, dass es beim Anlegen der Saugeinrichtungen an den Schlauchwänden zu einer Luftansaugung durch die Schlauchwände hindurch kommt, wodurch die Saugeinrichtungen nicht nur die ihnen zugeordnete Schlauchwand, sondern auch die dahinter befindliche Schlauchwand ansaugen und somit keine Trennung der Lagen erfolgt. Um dies zu verhindern, ist die vorliegende Erfindung bevorzugt dahingehend weitergebildet, dass einander gegenüberliegende Saugeinrichtungen zueinander versetzt angeordnet sind, wodurch sie zueinander versetzt an den zu trennenden Schlauchwänden angreifen. Mit einer solchen Positionierung der Saugeinrichtungen zueinander gelingt eine zuverlässige Trennung der Schlauchwände.In particular, when a bottom opening device is to be used in a bag making machine for bag bodies made of air-permeable fabrics, there is the danger that when applying the suction devices on the hose walls to an air intake through the tube walls passes, whereby the suction devices not only their associated hose wall, but also suck in the hose wall located behind it and thus there is no separation of the layers. To prevent this, the present invention is preferably further developed such that opposing suction devices are arranged offset from one another, whereby they attack each other offset to the tube walls to be separated. With such a positioning of the suction devices to each other succeeds a reliable separation of the tube walls.
In einer bevorzugten Ausgestaltung der Erfindung ist die Führungsschiene mittels verstellbarer Lagerung mit verstellbarem Winkel in der Schrägrichtung zur Bodenmittenlinie ausrichtbar ist. Wenn die verstellbare Lagerung Langlöcher mit durch Ausnehmungen definierten Lagerpunkten umfasst, ist ein rascher Wechsel zwischen verschiedenen Einstellungen des Winkels gegenüber Bodenmittenlinie möglich. Der Wechsel zwischen den Positionen kann mit einfachen Werkzeugen und gegebenenfalls von einer einzelnen Person durchgeführt werden.In a preferred embodiment of the invention, the guide rail is adjustable by means of adjustable storage with an adjustable angle in the oblique direction to the bottom center line. If the adjustable bearing comprises elongated holes with recesses defined by recesses, a rapid change between different settings of the angle to the ground center line is possible. Switching between positions can be done with simple tools and, if necessary, by a single person.
Eine besonders vorteilhafte Ausführungsform kann jedoch erzielt werden, wenn die Lagerung der Führungsschiene mittels eines motorischen Antriebs verstellbar ist. In diesem Fall kann die Einstellung des Winkels ohne Werkzeugeinsatz bewerkstelligt werden, wobei es auch möglich ist, die Einstellung computergesteuert auf die gewünschte Bodenbreite, auch während des Betriebes der Sackkonfektionierungsanlage, vorzunehmen.However, a particularly advantageous embodiment can be achieved if the mounting of the guide rail is adjustable by means of a motor drive. In this case, the adjustment of the angle can be accomplished without the use of tools, and it also it is possible to make the setting computer-controlled to the desired bottom width, even during operation of the bag making machine.
Die Erfindung wird nachfolgend anhand eines in den Zeichnungen schematisch dargestellten Ausführungsbeispieles näher erläutert.
- Die
zeigen schematisch Sektionen einer Sackkonfektionieranlage, in der die erfindungsgemäße Vorrichtung zum Öffnen eines Endbereichs eines schlauchförmigen Sackkörpers zum Einsatz gelangt.Figuren 1 bis 3 -
Figur 4 zeigt eine perspektivische Ansicht einer Ausführungsform einer Öffnungseinheit der erfindungs gemäßen Öffnungsvorrichtung. -
zeigt eine Untersicht der Öffnungseinheit.Figur 5 -
Figur 6 zeigt schematisch eine Seitenansicht einer Sektion der Sackkonfektionieranlage mit eingebauter Öffnungseinheit.
- The
FIGS. 1 to 3 schematically show sections of a Sackkonfektionieranlage, in which the device according to the invention for opening an end portion of a tubular bag body is used. -
FIG. 4 shows a perspective view of an embodiment of an opening unit of the inventive opening device. -
FIG. 5 shows a bottom view of the opening unit. -
FIG. 6 schematically shows a side view of a section of the Sackkonfektionieranlage with built-opening unit.
Die erfindungsgemäße Vorrichtung 1 und das erfindungsgemäße Verfahren zum Öffnen eines Endbereichs 10e eines schlauchförmigen Sackkörpers 10 im Zuge des Ausbildens eines Bodens am schlauchförmigen Sackkörper werden nun anhand der
Die Vorrichtung 1 umfasst eine Transporteinrichtung 2 in Form eines Förderbands, das sich kontinuierlich mit einer Transportgeschwindigkeit V in einer Transportrichtung T bewegt. Auf der Transporteinrichtung 2 liegen schlauchförmige Sackkörper 10 in flachliegendem Zustand mit ihrer Längserstreckung L quer zur Transportrichtung T. Die Sackkörper 10 werden auf dem Förderband durch nicht dargestellte Haltemittel gegen Verrutschen gesichert.The
Die schlauchförmigen Sackkörper 10 sind beispielsweise aus Gewebe aus gereckten Kunststoffbändchen hergestellt. Die Kunststoffbändchen können ein Polyethylen- oder Polypropylen- oder PET-Material umfassen. Optional weist das Gewebe eine Beschichtung aus Kunststoff auf. Die schlauchförmigen Sackkörper 10 können alternativ dazu aus Kunststofffolie hergestellt sein.The
Der schlauchförmige Sackkörper 10 weist zwei einander gegenüberliegende offene Endbereiche 10e, 10f auf. Der Endbereich 10e, der sich zwischen einem offenen Schlauchkörperende 10k und einer Bodenmittenlinie 10j erstreckt, soll zu einem Kreuzboden geformt werden. In weiterer Bearbeitung kann auch der Endbereich 10f auf die gleiche Weise wie der Endbereich 10e zu einem Kreuzboden geformt werden, wodurch ein Kastensack oder Kastenventilsack erzeugt wird.The
In
In
In den
Der Halter 3 ist gelenkig mit ersten Enden von zwei parallelen Schwenkarmen 4, 5 verbunden, von denen zumindest einer (hier der Schwenkarm 4) quer zur Transportrichtung T verschwenkbar angetrieben ist. Die zweiten Enden der Schwenkarme 4,5 sind gelenkig mit einem Trägerschlitten 7 verbunden, welcher Trägerschlitten 7 in einer Führungsschiene 22 in der Schrägrichtung S hin und her bewegbar angetrieben ist. Die Bodenöffnungseinheit 20 ist so an einem Support 30 befestigt, dass die Führungsschiene 22 in Transportrichtung T und parallel zur Schrägrichtung S ausgerichtet ist (siehe
Der Halter 3, die zwei Schwenkarme 4 und 5 und der Trägerschlitten 7 bilden eine Parallelogrammeinheit 8, bei der beim Verschwenken die Parallelogrammkonfiguration aufrecht erhalten bleibt. Dies führt dazu, dass der Halter 3 und damit die daran befestigte Saugeinrichtung 13, 14 beim Verschwenken der beiden Schwenkarme 4 und 5 ihre Ausrichtung bezüglich der zu trennenden Schlauchwände beibehalten, wodurch ein ungünstiges Verwinden der Schlauchwände 10a und 10b beim Öffnen verhindert wird.The
Das Verschwenken der Schwenkarme 4 und 5 erfolgt bei der erfindungsgemäßen Vorrichtung gemäß
In
In der Ansicht gemäß
In der schematischen Seitenansicht von
Claims (20)
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
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EP12185656.1A EP2711164B1 (en) | 2012-09-24 | 2012-09-24 | Apparatus and method for opening an end area of a tubular sack body |
ES12185656.1T ES2592534T3 (en) | 2012-09-24 | 2012-09-24 | Device and procedure for opening an end zone of a tubular shaped bag body |
PCT/EP2013/068303 WO2014044532A1 (en) | 2012-09-24 | 2013-09-04 | Device for opening an end region of a tubular bag body |
CN201380049509.9A CN104812561B (en) | 2012-09-24 | 2013-09-04 | For opening the device of the end regions of tubular bag body |
TW102133905A TWI477424B (en) | 2012-09-24 | 2013-09-18 | Device for opening an end region of a tubular bag body |
PH12015500558A PH12015500558A1 (en) | 2012-09-24 | 2015-03-13 | Device for opening an end region of a tubular bag body |
IN2703DEN2015 IN2015DN02703A (en) | 2012-09-24 | 2015-04-02 |
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EP12185656.1A EP2711164B1 (en) | 2012-09-24 | 2012-09-24 | Apparatus and method for opening an end area of a tubular sack body |
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EP2711164A1 true EP2711164A1 (en) | 2014-03-26 |
EP2711164B1 EP2711164B1 (en) | 2016-06-22 |
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EP (1) | EP2711164B1 (en) |
CN (1) | CN104812561B (en) |
ES (1) | ES2592534T3 (en) |
IN (1) | IN2015DN02703A (en) |
PH (1) | PH12015500558A1 (en) |
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WO (1) | WO2014044532A1 (en) |
Cited By (1)
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EP3269539A1 (en) | 2016-07-14 | 2018-01-17 | Starlinger & Co. Gesellschaft m.b.H. | Device for opening an end area of a tubular sack body |
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ES2839598T3 (en) | 2017-12-14 | 2021-07-05 | Starlinger & Co Gmbh | Bag for loose material |
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EP2441574A1 (en) | 2010-10-14 | 2012-04-18 | Starlinger & Co Gesellschaft m.b.H. | Method and device for constructing open bases at end sections of tubular bag bodies |
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FR2601899A1 (en) * | 1986-07-24 | 1988-01-29 | Chandellier Antoine | MACHINE FOR SHAPING THE BOTTOM BELLOWS OF THE ENVELOPES OF PAPER BAGS AND BAGS COMPRISING THREE BELLOWS |
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SE514429C2 (en) * | 1999-06-11 | 2001-02-19 | Tetra Laval Holdings & Finance | Device for folding flexible packaging material |
JP4667067B2 (en) * | 2005-02-18 | 2011-04-06 | 株式会社ミヤコシ | Square bottom bag making machine |
CN101670684B (en) * | 2009-09-19 | 2011-03-23 | 张列荣 | Manufacturing process of packaging bag |
JP5739149B2 (en) * | 2010-12-10 | 2015-06-24 | テルモ株式会社 | Method for manufacturing medical bag and medical bag |
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2012
- 2012-09-24 EP EP12185656.1A patent/EP2711164B1/en active Active
- 2012-09-24 ES ES12185656.1T patent/ES2592534T3/en active Active
-
2013
- 2013-09-04 WO PCT/EP2013/068303 patent/WO2014044532A1/en active Application Filing
- 2013-09-04 CN CN201380049509.9A patent/CN104812561B/en active Active
- 2013-09-18 TW TW102133905A patent/TWI477424B/en active
-
2015
- 2015-03-13 PH PH12015500558A patent/PH12015500558A1/en unknown
- 2015-04-02 IN IN2703DEN2015 patent/IN2015DN02703A/en unknown
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DE974780C (en) * | 1950-10-09 | 1961-04-20 | St Regis Paper Co | Machine for the automatic bottom formation of single or multi-layer paper bags, especially valve bags |
DE1091422B (en) * | 1959-05-19 | 1960-10-20 | Windmoeller & Hoelscher | Device for pre-opening the raised ends of the hose sections in a flooring machine |
AT408427B (en) | 1995-01-25 | 2001-11-26 | Windmoeller & Hoelscher | DEVICE FOR PRODUCING CROSS-BODY BAGS |
DE102008017445A1 (en) | 2008-04-03 | 2009-10-15 | Windmöller & Hölscher Kg | Apparatus and method for producing sacks |
EP2441574A1 (en) | 2010-10-14 | 2012-04-18 | Starlinger & Co Gesellschaft m.b.H. | Method and device for constructing open bases at end sections of tubular bag bodies |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3269539A1 (en) | 2016-07-14 | 2018-01-17 | Starlinger & Co. Gesellschaft m.b.H. | Device for opening an end area of a tubular sack body |
WO2018011114A1 (en) | 2016-07-14 | 2018-01-18 | Starlinger & Co Gesellschaft M.B.H. | Device for opening an end region of a tubular bag body |
KR20190028699A (en) * | 2016-07-14 | 2019-03-19 | 스타링거 운트 콤파니 게젤샤프트 엠 베하 | Apparatus for expanding the end region of the tubular bag body |
JP2019521049A (en) * | 2016-07-14 | 2019-07-25 | スターリンガー アンド コー ゲゼルシャフト エム.ベー.ハー. | Device for opening the end area of a tubular bag |
US10960634B2 (en) | 2016-07-14 | 2021-03-30 | Starlinger & Co Gesellschaft M.B.H. | Device for opening an end region of a tubular bag body |
Also Published As
Publication number | Publication date |
---|---|
WO2014044532A1 (en) | 2014-03-27 |
TWI477424B (en) | 2015-03-21 |
PH12015500558B1 (en) | 2015-05-11 |
ES2592534T3 (en) | 2016-11-30 |
TW201412608A (en) | 2014-04-01 |
PH12015500558A1 (en) | 2015-05-11 |
CN104812561A (en) | 2015-07-29 |
CN104812561B (en) | 2016-10-19 |
IN2015DN02703A (en) | 2015-09-04 |
EP2711164B1 (en) | 2016-06-22 |
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