EP0423481B1 - Delivery device for bags with a glued bottom - Google Patents
Delivery device for bags with a glued bottom Download PDFInfo
- Publication number
- EP0423481B1 EP0423481B1 EP90117412A EP90117412A EP0423481B1 EP 0423481 B1 EP0423481 B1 EP 0423481B1 EP 90117412 A EP90117412 A EP 90117412A EP 90117412 A EP90117412 A EP 90117412A EP 0423481 B1 EP0423481 B1 EP 0423481B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressing
- belts
- delivery device
- cylinders
- bags
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000003825 pressing Methods 0.000 claims description 41
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000000151 deposition Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
Images
Classifications
-
- 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
- B31B70/60—Uniting opposed surfaces or edges; Taping
- B31B70/62—Uniting opposed surfaces or edges; Taping by adhesives
- B31B70/626—Arrangements for permitting the glue to set
-
- 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
- B31B2160/10—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/17—Surface bonding means and/or assemblymeans with work feeding or handling means
- Y10T156/1702—For plural parts or plural areas of single part
- Y10T156/1712—Indefinite or running length work
- Y10T156/1741—Progressive continuous bonding press [e.g., roll couples]
Definitions
- the glued bottoms of sacks must be pressed together immediately after they have been manufactured in order to prevent the bottom folds from erecting while loosening the bonds and to achieve well-glued bottoms by pressing the bottom areas.
- the double belt conveyors consisting of press belts are provided for sack stacks formed from the sacks just produced, in which the press belts compress the stacks in the region of the bottoms. Since the pressing must be maintained for a sufficiently long time, the double belt conveyors which compress the stack must have a considerable length, which leads to an undesirably long construction of the systems for the production of the bags.
- DE-C-313 866 discloses a device of the type specified at the outset, which, however, does not serve to put down bags provided with glued bottoms, but rather to dry the flap edges of envelopes provided with adhesive.
- all the press belts are wrapped in the strands of a single double belt conveyor, with successive press cylinders being wrapped in an S-shape.
- S-shaped wrap has the result that the two strands of the double belt conveyor are alternately inside and outside. Since the outer sections of the conveying strands revolve at a higher speed than the inner ones, there are relative displacements between the two edges of the double belt conveyor during the run over the press cylinders, which lead to an undesirable distortion of the scaled objects one above the other.
- the object of the invention is therefore to ensure a distortion-free conveyance of the overlapping sacks during their conveyance from the feed station to the discharge station.
- two pairs of press cylinders wrapped with endless press belts, each with an S-shaped conveying path, are provided.
- This arrangement allows sections of the press section to be arranged in several planes, which leads to an additional reduction in the overall length.
- the pairs of press cylinders are expediently arranged approximately symmetrically to a vertical plane parallel to the press cylinder axes. Two press cylinders of the two pairs of press cylinders can each be arranged closer and further away from the plane of symmetry.
- the conveyance of shingled sacks one above the other by a double belt conveyor with endless upper and lower runs, which run over two spaced-apart deflection cylinders, is known per se from DE-PS 530 526.
- the two strands of the double belt conveyor form a straight conveyor section on which the strands run at different speeds because the outer strands are given a higher speed when circulating via the deflecting cylinders. Due to the relative speed between the two conveying strands of the double belt conveyor, the bag scale is pulled apart, so that the distances and the position of the individual bags in the stream of shingles change in an indefinable manner.
- the press belts of the double belt conveyors rotate at least one downstream press cylinder at a higher speed than they correspond to a previous press cylinder. Due to this higher speed, the scales overlapping sacks are pulled apart with an evenly increasing scale distance, so that any The sacks should not be stuck together.
- the press cylinder rotating at higher speed is preceded by a double belt conveyor consisting of press belts with a straight conveying path.
- the press belt forming the lower run of the straight conveyor section expediently wraps around the following press cylinder as the inside belt, the upper or outer press belts of the straight conveyor section and the following press cylinder being separated from one another. This prevents the press belts of the double belt conveyor from rotating in the area of the straight conveyor section at different speeds relative to one another.
- the last pair of press cylinders expediently rotate at a higher speed.
- each separate press belts are provided, each of which is assigned to the bottom parts with a different number of layers.
- This configuration takes into account the fact that the outer parts of each bottom have fewer layers, for example only two layers, while the bottom part overlapping a sack wall is thicker around the layers of the two sack walls.
- the first cylinder 2 is for the most part wrapped in a drivable pair of belts 6, which is extended to an infeed belt 6 '.
- the pair of belts 6 acts as a pair of infeed belts 6 '
- the latter is another drivable pair of belts 7 assigned so that the shingled stream entering in the direction of arrow A passes between the pairs of belts 6 'and 7.
- the pair of belts 8 is guided by the guide rollers 9, of which the roller can be shifted in the direction of arrow B in 9 'to change the web tension.
- the stream passes between the two pairs of belts 10 and 11 which largely surround the cylinder 3, the pair of belts 11 being driven and resting directly on the cylinder 3.
- the guide roller 12 ' can be moved in the direction of arrow C to change the non-driven pair of belts 10.
- the pin 13 of the guide roller 12 ' is held in a longitudinal groove 14, so that the position of the guide roller 12' can be changed via a piston-cylinder unit 15.
- the belt pair 23 directly surrounding the cylinder 5 is also driven, while the outer belt pair 24 runs freely.
- the guide roller 25 can be displaced in the direction of arrow D from the guide rollers of this outer pair of bands 24 in order to change the tension of the outer pair of bands 24.
- the press cylinder 5 outgoing scale stream is then discharged via further belts 26.
- the belt pairs 6 and 11 wrapping around the cylinders 2 and 3 are driven at the same speed, while the inner belt pairs 16 and 23 directly wrapping around the cylinders 4 and 5 are driven at a slightly higher speed than the belt pairs 6 and 11.
- This measure has the effect that the scale spacing of the scale flow running off from the cylinder 3 is increased in a precisely defined manner as soon as the scale flow enters the belt pairs 16 and 17.
- the pair of belts 18 consists of two belts
- the outer non-driven belt pair partially wrapping around the cylinder 4 consists of four individual belts 18 'to 18' '''.
- the embodiment according to FIG. 3 has the advantage that the web tensions of the belts 18 'to 18' '''can be set individually, depending on the thickness of the floor. This is because it consists of four layers in the area of the belts 18 '' and 18 '' ', while it consists of only two layers in the area of the belts 18' and 18 ''''. In the case of very thin material, this difference is not very serious, so that an embodiment according to FIG. 2 can be chosen.
- FIG. 3 it is necessary to provide several piston-cylinder units 22. Even if FIGS. 2 and 3 relate only to the press cylinder 4, it is of course also conceivable to design the outer belt pairs of the cylinders 2, 3 and 5 accordingly.
- FIG. 4 are based on the wider tapes of the pair of tapes 18 each from even narrower tapes 30, which are located only in the area of the outer floor parts with a smaller number of layers, so that this floor area is also subjected to a pressure which corresponds approximately to that of the inner floor area, which is due to the covered Sack walls have a larger number of layers.
- press belts of higher tension or additional press belts are provided for the outer floor areas, these are subjected to a lower pressure because of the smaller number of layers. It is therefore possible to choose press belts which have such a great elasticity that, despite the different number of layers of the two floor parts, they apply approximately the same pressure to the entire floor area.
Landscapes
- Making Paper Articles (AREA)
- Delivering By Means Of Belts And Rollers (AREA)
- Structure Of Belt Conveyors (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
Description
Die Erfindung betrifft eine Ablegevorrichtung für mit geklebten Böden versehene Säcke mit mindestens einem die Bodenbereiche der Säcke mit seinen endlosen Preßbändern zusammendrückenden Doppelbandförderer, der mit seinen in vertikalen Ebenen übereinanderliegenden und die geschuppt übereinanderliegenden Säcke zwischen sich fördernden, endlosen Preßbändern mindestens zwei Preßzylinder mit S-förmigem oder bei mehr als zwei Preßzylindern mit mehrfach S-förmigem Förderweg teilweise umschlingt.The invention relates to a depositing device for sacks provided with glued bottoms, with at least one double belt conveyor which compresses the bottom regions of the sacks with its endless press belts, with at least two press cylinders with S-shaped conveyors, which lie one above the other in vertical planes and the overlapping sacks between conveying, endless press belts or partially wraps around more than two press cylinders with multiple S-shaped conveying paths.
Die geklebten Böden von Säcken müssen unmittelbar nach ihrer Herstellung zusammengedrückt werden, um zu verhindern, daß sich die Bodenfaltungen unter Lösung der Verklebungen aufrichten und um durch die Pressung der Bodenbereiche gut verklebte Böden zu erreichen.The glued bottoms of sacks must be pressed together immediately after they have been manufactured in order to prevent the bottom folds from erecting while loosening the bonds and to achieve well-glued bottoms by pressing the bottom areas.
Bei einer aus DE-C-12 98 873 bekannten Ablegevorrichtung sind die aus Preßbändern bestehenden Doppelbandförderer für aus den gerade hergestellten Säcken gebildeten Sackstapel vorgesehen, bei der die Preßbänder die Stapel im Bereich der Böden zusammendrücken. Da die Pressung über eine ausreichend lange Zeit aufrechterhalten werden muß, müssen die die Stapel zusammendrückenden Doppelbandförderer eine erhebliche Länge aufweisen, was zu einer unerwünscht langen Bauweise der Anlagen zur Herstellung der Säcke führt.In a depositing device known from DE-C-12 98 873, the double belt conveyors consisting of press belts are provided for sack stacks formed from the sacks just produced, in which the press belts compress the stacks in the region of the bottoms. Since the pressing must be maintained for a sufficiently long time, the double belt conveyors which compress the stack must have a considerable length, which leads to an undesirably long construction of the systems for the production of the bags.
Aus DE-C-313 866 ist eine Vorrichtung der eingangs angegebenen Art bekannt, die allerdings nicht dem Ablegen von mit geklebten Böden versehenen Säcken, sondern dem Trocknen der mit Klebstoff versehenen Klappenränder von Briefumschlägen dient. Bei dieser bekannten Vorrichtung werden sämtliche Preßbänder von den Trumen eines einzigen Doppelbandförderers umschlungen, wobei aufeinanderfolgende Preßzylinder S-förmig umschlungen werden. Diese S-förmige Umschlingung hat zur Folge, daß abwechselnd die beiden Trume des Doppelbandförderers innen und außen liegen. Da die außen liegenden Abschnitte der Fördertrume mit größerer Geschwindigkeit als die inneren umlaufen, kommt es zu Relativverschiebungen zwischen den beiden Rändern des Doppelbandförderers während des Laufes über die Preßzylinder, die zu einer unerwünschten Verzerrung der geschuppt übereinanderliegenden Gegenstände führen.DE-C-313 866 discloses a device of the type specified at the outset, which, however, does not serve to put down bags provided with glued bottoms, but rather to dry the flap edges of envelopes provided with adhesive. In this known device, all the press belts are wrapped in the strands of a single double belt conveyor, with successive press cylinders being wrapped in an S-shape. These S-shaped wrap has the result that the two strands of the double belt conveyor are alternately inside and outside. Since the outer sections of the conveying strands revolve at a higher speed than the inner ones, there are relative displacements between the two edges of the double belt conveyor during the run over the press cylinders, which lead to an undesirable distortion of the scaled objects one above the other.
Aufgabe der Erfindung ist es daher, eine verzerrungsfreie Förderung der geschuppt übereinanderliegenden Säcke während ihrer Förderung von der Aufgabestation zur Abgabestation zu gewährleisten.The object of the invention is therefore to ensure a distortion-free conveyance of the overlapping sacks during their conveyance from the feed station to the discharge station.
Erfindungsgemäß wird diese Aufgabe durch die kennzeichnenden Merkmale des Patentanspruchs 1 gelöst.According to the invention, this object is achieved by the characterizing features of patent claim 1.
Zweckmäßigerweise sind zwei Paare von mit endlosen Preßbändern umschlungenen Preßzylindern mit jeweils S-förmigem Förderweg vorgesehen. Diese Anordnung gestattet es, Abschnitte der Preßstrecke in mehreren Ebenen anzuordnen, was zu einer zusätzlichen Verkürzung der Baulänge führt.Advantageously, two pairs of press cylinders wrapped with endless press belts, each with an S-shaped conveying path, are provided. This arrangement allows sections of the press section to be arranged in several planes, which leads to an additional reduction in the overall length.
Zweckmäßigerweise sind die Preßzylinderpaare etwa symmetrisch zu einer vertikalen, zu den Preßzylinderachsen parallelen Ebene angeordnet. Dabei können jeweils zwei Preßzylinder der beiden Preßzylinderpaare näher und entfernter zu der Symmetrieebene angeordnet sein.The pairs of press cylinders are expediently arranged approximately symmetrically to a vertical plane parallel to the press cylinder axes. Two press cylinders of the two pairs of press cylinders can each be arranged closer and further away from the plane of symmetry.
Die Förderung von geschuppt übereinander liegenden Säcken durch einen Doppelbandförderer mit endlosen oberen und unteren Trumen, die über zwei im Abstand voneinander angeordnet Umlenkzylinder laufen, ist an sich aus der DE-PS 530 526 bekannt. Zwischen den beiden Umlenkzylindern bilden die beiden Trume des Doppelbandförderers eine gerade verlaufende Förderstrecke, auf der die Trume mit unterschiedlicher Geschwindigkeit laufen, weil beim Umlauf über die Umlenkzylinder den jeweils äußeren Trumen eine größere Geschwindigkeit erteilt wird. Aufgrund der Relativgeschwindigkeit zwischen den beiden Fördertrumen des Doppelbandförderers wird die Sackschuppe auseinandergezogen, so daß sich die Abstände und die Lage der einzelnen Säcke in dem Schuppenstrom in undefinierbarer Weise ändern.The conveyance of shingled sacks one above the other by a double belt conveyor with endless upper and lower runs, which run over two spaced-apart deflection cylinders, is known per se from DE-PS 530 526. Between the two deflecting cylinders, the two strands of the double belt conveyor form a straight conveyor section on which the strands run at different speeds because the outer strands are given a higher speed when circulating via the deflecting cylinders. Due to the relative speed between the two conveying strands of the double belt conveyor, the bag scale is pulled apart, so that the distances and the position of the individual bags in the stream of shingles change in an indefinable manner.
Bei der erfindungsgemäßen Ablagevorrichtung ist es an sich erwünscht, daß die geschuppt übereinander liegend geförderten Säcke innerhalb der Preßstrecke mit sich vergrößerndem Schuppenabstand auseinandergezogen werden, um etwaige Verklebungen der übereinanderliegenden Säcke durch aus den Klebnähten herausgetretenen oder herausgepreßten Klebstoff durch entsprechenden Abriß wieder zu lösen. Nach einer erfinderischen Weiterbildung ist daher vorgesehen, daß die Preßbänder der Doppelbandförderer mindestens eines nachgeschalteten Preßzylinders mit höherer Geschwindigkeit umlaufen als sie einem vorhergehenden Preßzylinder entspricht. Durch diese höhere Geschwindigkeit werden Die geschuppt übereinanderliegenden Säcke mit sich gleichmäßig vergrößerndem Schuppenabstand auseinandergezogen, so daß etwaige Verklebungen der Säcke miteinander aufgehoben werden. Da die von dem vorhergehenden Doppelbandförderer geförderten Säcke mit ihren in Förderrichtung forderen Kanten einzeln in das Bändermaul des mit höherer Geschwindigkeit umlaufenden Doppelbandförderers einlaufen, werden die einzelnen Säcke aus der zugeförderten Schuppe mit sich vergrößerndem Schuppenabstand abgezogen, ohne daß sie weitere Verlagerungen erfahren, so daß sich eine Schuppe mit lediglich vergrößertem Schuppenabstand ergibt.In the storage device according to the invention, it is desirable that the sacked sacks conveyed one above the other are pulled apart within the pressing section with an increasing scale distance in order to release any sticking of the sacks lying one above the other by adhesive torn out or squeezed out of the adhesive seams by appropriate tearing. According to an inventive development, it is therefore provided that the press belts of the double belt conveyors rotate at least one downstream press cylinder at a higher speed than they correspond to a previous press cylinder. Due to this higher speed, the scales overlapping sacks are pulled apart with an evenly increasing scale distance, so that any The sacks should not be stuck together. Since the sacks conveyed by the preceding double belt conveyor with their edges in the conveying direction run individually into the belt mouth of the double belt conveyor rotating at a higher speed, the individual sacks are removed from the conveyed scale with an increasing scale distance without experiencing any further displacements, so that a scale with only increased scale spacing results.
Zweckmäßigerweise ist dem mit höherer Geschwindigkeit umlaufenden Preßzylinder ein aus Preßbändern bestehender Doppelbandförderer mit gerader Förderstrecke vorgeschaltet. Dabei umschlingt zweckmäßigerweise das das Untertrum bildende Preßband der geraden Förderstrecke als innenliegendes Band den folgenden Preßzylinder, wobei die oben liegenden bzw. äußeren Preßbänder der geraden Förderstrecke und des folgenden Preßzylinders voneinander getrennt sind. Dadurch wird verhindert, daß die Preßbänder des Doppelbandförderers im Bereich der geraden Förderstrecke mit unterschiedlicher Geschwindigkeit relativ zueinander umlaufen.Advantageously, the press cylinder rotating at higher speed is preceded by a double belt conveyor consisting of press belts with a straight conveying path. In this case, the press belt forming the lower run of the straight conveyor section expediently wraps around the following press cylinder as the inside belt, the upper or outer press belts of the straight conveyor section and the following press cylinder being separated from one another. This prevents the press belts of the double belt conveyor from rotating in the area of the straight conveyor section at different speeds relative to one another.
Zweckmäßigerweise laufen bei zwei Preßzylinderpaaren das letzte Preßzylinderpaar mit höherer Geschwindigkeit um.In the case of two pairs of press cylinders, the last pair of press cylinders expediently rotate at a higher speed.
Da eine Pressung der geschuppt übereinander liegenden Säcke nur im Bereich von deren Böden erforderlich ist, sind die Preßbänder zweckmäßigerweise jeweils nur im Bereich der beiden Böden der Säcke angeordnet. Dabei werden die Säcke in der Schuppe querliegend gefördert, so daß die Bodenbereich jeweils außen, also an den Seiten der Sackschuppe liegen.Since pressing of the serrated sacks lying one above the other is only necessary in the area of their bottoms, the press belts are expediently arranged only in the area of the two bottoms of the bags. The sacks are conveyed transversely in the scale, so that the bottom areas are on the outside, ie on the sides of the sack scale.
Nach einer vorteilhaften Ausgestaltung ist vorgesehen, daß in den Bodenbereichen der Säcke jeweils zwei äußere voneinander getrennte Preßbänder vorgesehen sind, die jeweils den Bodenteilen mit unterschiedlicher Lagenzahl zugeordnet sind. Diese Ausgestaltung trägt dem Umstand Rechnung, daß die äußeren Teile jedes Bodens weniger Lagen, beispielsweise nur zwei Lagen, aufweisen, während der eine Sackwandung überlappende Bodenteil um die Lagen der beiden Sackwandungen dicker ist.According to an advantageous embodiment, it is provided that in the bottom regions of the sacks two outer ones each separate press belts are provided, each of which is assigned to the bottom parts with a different number of layers. This configuration takes into account the fact that the outer parts of each bottom have fewer layers, for example only two layers, while the bottom part overlapping a sack wall is thicker around the layers of the two sack walls.
Ausführungsbeispiele der Erfindung werden nachstehend anhand der Zeichnung näher erläutert. In dieser zeigt
- Fig.1
- eine Seitenansicht der Ablagevorrichtung mit über vier Preßzylinder laufenden Doppelbandförderern in schematischer Darstellung,
- Fig.2
- einen Schnitt durch einen Preßzylinder sowie diesen umschlingenden Preßbänder längs der Linie II-II in Fig.1 ,
- Fig.3
- einen der Fig.2 entsprechenden Schnitt mit jeweils zwei paarweise angeordneten äußeren voneinander getrennten Preßbändern und
- Fig.4
- einen der Fig.2 entsprechenden Schnitt, wobei jedoch auf die äußeren Bereiche der Preßbänder zusätzliche schmalere Preßbänder drücken, die sich nur im Bereich der äußeren Bodenteile mit geringerer Lagenzahl befinden.
- Fig. 1
- 2 shows a side view of the storage device with double belt conveyors running over four press cylinders in a schematic illustration,
- Fig. 2
- 2 shows a section through a press cylinder and the press belts wrapping around it, along the line II-II in FIG. 1,
- Fig. 3
- a section corresponding to FIG. 2, each with two outer press belts arranged in pairs and
- Fig. 4
- a section corresponding to FIG. 2, but with additional narrow pressure bands pressing on the outer areas of the press belts, which are only located in the area of the outer bottom parts with a smaller number of layers.
In der hinteren Wand 1 eines Rahmens, dessen vordere Wand nicht dargestellt ist, sind vier Preßzylinder 2,3,4,5 frei drehbar gelagert. Der erste Zylinder 2 ist zum größten Teil von einem antreibbaren Bänderpaar 6 umschlungen, welches zu einem Einlaufband 6' verlängert ist. In dem Bereich, in dem das Bänderpaar 6 als Einlaufbänderpaar 6' wirkt, ist letzterem ein weiteres antreibbares Bänderpaar 7 zugeordnet, so daß der in Pfeilrichtung A einlaufende Schuppenstrom zwischen die Bänderpaare 6' und 7 gelangt. An das abgabeseitige Ende des Bänderpaares 7 schließt sich ein weiteres nicht angetriebenes Bänderpaar 8 an, welches den Zylinder 2 ebenso wie das Bänderpaar 6 zu einem großen Teil umschlingt. Das Bänderpaar 8 wird dabei von den Führungsrollen 9 geführt, von denen die Rolle in 9' in Pfeilrichtung B zur Bahnspannungsänderung verschoben werden kann. Nachdem der Schuppenstrom den Zylinder 2 umlaufen hat, gelangt der Strom zwischen die beiden den Zylinder 3 zum großen Teil umschlingenden Bänderpaare 10 und 11, wobei das Bänderpaar 11 angetrieben ist und direkt auf dem Zylinder 3 aufruht. Von den Führungsrollen 12 des Bänderpaares 10 ist die Führungsrolle 12' zur Veränderung des nicht angetriebenen Bänderpaares 10 in Pfeilrichtung C bewegbar. Zu diesem Zweck ist der Zapfen 13 der Führungsrolle 12' in einer Längsnut 14 gehalten, so daß die Führungsrolle 12' über eine Kolben-Zylinder-Einheit 15 in ihrer Lage veränderbar ist. An das auslaufseitige Ende der Bänderpaare 10 und 11 schließen sich weitere Bänderpaare 16 und 17 an, die beide angetrieben sind und von denen das Bänderpaar 16 den Preßzylinder 4 zu einem großen Teil umschlingt. Im Bereich der Umschlingung liegt auf dem Bänderpaar 16 ein nicht angetriebenes Bänderpaar 18 auf, wobei die Zapfen 20 einer Führungsrolle 19 in Langlöchern 21 gelagert und über Kolbenzylindereinheiten 22 zur Änderung der Bahnspannung verstellbar ist. Ebenso wie der Zylinder 4 ist auch der sich an diesen anschließende weitere Preßzylinder 5 von einem direkt auf ihm aufliegenden Bandpaar 23 und einem öußeren Bandpaar 24 auf dem förderwirksamen Teil umschlungen. Ebenso wie bei den Preßzylindern 2,3 und 4 ist auch das den Zylinder 5 direkt umschließende Bandpaar 23 angetrieben, während das äußere Bandpaar 24 frei mitläuft. Von den Führungsrollen dieses äußeren Bandpaares 24 ist die Führungsrolle 25 in Pfeilrichtung D verlagerbar, um die Spannung des äußeren Bandpaares 24 zu verändern. Der vom Preßzylinder 5 ablaufende Schuppenbandstrom wird dann über weitere Bänder 26 abgeführt.In the rear wall 1 of a frame, the front wall of which is not shown, four
Im dargestellten Ausführungsbeispiel werden die die Zylinder 2 und 3 umschlingenden Bandpaare 6 und 11 mit der gleichen Geschwindigkeit angetrieben, während dei die Zylinder 4 und 5 unmittelbar umschlingenden inneren Bandpaare 16 und 23 mit gegenüber den Bandpaaren 6 und 11 geringfügig erhöhter Geschwindigkeit angetrieben werden. Diese Maßnahme bewirkt, daß der Schuppenabstan des vom Zylinder 3 ablaufenden Schuppenstroms genau definiert vergrößert wird, sobald der Schuppenstrom in die Bandpaare 16 und 17 einläuft.In the illustrated embodiment, the belt pairs 6 and 11 wrapping around the
Aus der Figur 2 ist zu erkennen, daß das Bandpaar 18 aus zwei Bändern besteht, während gemäß einer Ausführungsform nach Figur 3 das äußere nicht angetriebene den Zylinder 4 teilweise umschlingende Bandpaar aus vier einzelnen Bändern 18' bis 18'''' besteht. Die Ausführungsform gemäß Figur 3 hat den Vorteil, daß die Bahnspannungen der Bänder 18' bis 18'''' individuell eingestllt werden können, und zwar in Abhängigkeit von der Stärke des Bodens. Dieser besteht nämlich im Bereich der Bänder 18'' und 18''' aus vier Lagen, während er im Bereich der Bänder 18' und 18'''' aus nur zwei Lagen besteht. Bei sehr dünnem Material ist dieser Unterschied nicht sehr gravierend, so daß eine Ausführungsform gemäß Figur 2 gewählt werden kann. Wird jedoch ein Sack aus sehr dickem Material hergestellt, empfiehlt sich die Ausführungsform nach Figur 3. Selbstverständlich ist es bei dem Ausführungsbeispiel gemäß Figur 3 erforderlich, mehrere Kolben-Zylindereinheiten 22 vorzusehen. Auch wenn die Figuren 2 und 3 nur auf den Preßzylinder 4 bezogen sind, ist es selbstverständlich denkbar, auch die äußeren Bandpaare der Zylinder 2,3 und 5 entsprechend auszubilden.It can be seen from FIG. 2 that the pair of
Bei dem Ausführungsbeispiel nach Fig. 4 stützen sich auf die breiteren Bänder des Bänderpaares 18 jeweils noch schmalere Bänder 30 ab, die sich nur im Bereich der außen liegenden Bodenteile mit geringerer Lagenzahl befinden, so daß auch dieser Bodenbereich mit einem Druck beaufschlagt wird, der in etwa dem des inneren Bodenbereichs entspricht, der aufgrund der überdeckten Sackwandungen eine größere Lagenzahl aufweist.In the embodiment of FIG. 4 are based on the wider tapes of the pair of
Das zusätzliche Bänderpaar 30 kann für sämtliche Zylinder 2 bis 5, oder aber auch nur für einzelne Zylinder vorgesehen werden.The additional pair of
Um die Spannung der Preßbänder den jeweiligen Gegebenheiten anpassen zu können, kann diese für jeden Zylinder unabhängig voneinander einstellbar sein.In order to be able to adapt the tension of the press belts to the respective circumstances, this can be set independently for each cylinder.
Sind für die äußeren Bodenbereiche keine Preßbänder höherer Spannung oder zusätzliche Preßbänder vorgesehen, werden diese wegen der geringeren Lagenzahl mit einem geringeren Druck beaufschlagt. Es können daher Preßbänder gewählt werden, die eine so große Elastizität aufweisen, daß sie trotz unterschiedlicher Lagenzahl der beiden Bodenteile den gesamten Bodenbereich mit etwa gleichem Druck beaufschlagen.If no press belts of higher tension or additional press belts are provided for the outer floor areas, these are subjected to a lower pressure because of the smaller number of layers. It is therefore possible to choose press belts which have such a great elasticity that, despite the different number of layers of the two floor parts, they apply approximately the same pressure to the entire floor area.
Claims (13)
- Delivery device for bags provided with glued bottoms, having at least one double-belt conveyor which presses together the bottom regions of the bags by its endless pressing belts and, with its endless pressing belts lying one above the other in vertical planes and conveying between them the bags lying one above the other in an imbricated manner, wraps partly around at least two pressing cylinders (2, 3) with an S-shaped conveying path, or in the case of more than two pressing cylinders (2 to 5) with a multiply S-shaped conveying path; characterized in that each of the pressing cylinders (2, 3; 4, 5) is provided with its own pressing belts (10, 11; 7, 8; 23, 24; 16, 18); in that the discharge ends of the double-belt conveyors, comprising the pressing belts (10, 11; 7, 8; 23, 24; 16, 18) of the preceding pressing cylinder (2, 4) transfer the bags lying one above the other in an imbricated manner to the run-in nip of the double-belt conveyor of the following pressing cylinder (3, 5); and in that the respectively outer pressing belts (10, 8, 24, 18) of the double-belt conveyor or conveyors are not driven.
- Delivery device according to Claim 1, characterized in that two pairs of pressing cylinders (2, 3; 4, 5) wrapped around by endless pressing belts (10, 11; 7, 8; 23, 24; 16, 18) are respectively provided with an S-shaped conveying path.
- Delivery device according to Claim 1 or 2, characterized in that the pairs of pressing cylinders (2, 3; 4, 5) are arranged approximately symmetrically with respect to a vertical plane parallel to the pressing cylinder axes.
- Delivery device according to Claim 3, characterized in that the pressing cylinders (2, 5; 3, 4) of the two pairs of pressing cylinders are respectively arranged closer to and further away from the plane of symmetry.
- Delivery device according to one of Claims 1 to 3, characterized in that the pressing belts of the double-belt conveyors (10, 11; 16, 18; 23, 24) of at least one downstream pressing cylinder (3, 4, 5) circulate at a higher speed than that corresponding to a preceding pressing cylinder.
- Delivery device according to Claim 5, characterized in that the pressing cylinder (4), rotating at a higher speed, is preceded upstream by a double-belt conveyor comprising pressing belts (16, 17) and with a straight conveying section.
- Delivery device according to Claim 6, characterized in that the pressing belt (16) of the straight conveying section forming the lower strand, as the inner-lying belt, wraps around the following pressing cylinder (4); and in that the upper-lying or the outer pressing belts (17, 18) of the straight conveying section and of the following pressing cylinder (4) are separate from one another.
- Delivery device according to one of the preceding claims, characterized in that, in the case of two pairs of pressing cylinders (2, 3; 4, 5), the last pair of pressing cylinders (4, 5) rotates at a higher speed.
- Delivery device according to one of Claims 1 to 8, characterized in that the pressing belts (10, 11; 7, 8; 23, 24; 16, 18) are respectively arranged only in the region of the two bottoms of the bags.
- Delivery device according to one of Claims 1 to 9, characterized in that in the bottom regions of the bags there are respectively provided two outer, mutually separate pressing belts (18', 18''; 18''', 18''''), which are respectively assigned only to the bottom parts having a different number of plies.
- Delivery device according to Claim 9, characterized in that the pressing belts (18) at least partially covering the lateral bottom regions of the bags conveyed in a transversely lying manner are provided with a pair of further pressing belts (30) which press against the said first pressing belts and circulate with them and which are located only in the region of the outer bottom parts of a smaller number of plies.
- Delivery device according to Claim 9, characterized in that the tension of each of the pressing belts (8, 10, 18, 24) is adjustable for achieving a substantially uniform pressing over the entire bottom width, irrespective of the tension of the other pressing belts.
- Delivery device according to one of the preceding claims, characterized in that the pressing belts (10, 11; 7, 8; 23, 24; 16, 18) have such a great elasticity that they bear with substantially the same pressure against the bottom regions of an unequal number of plies.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3934879 | 1989-10-19 | ||
| DE3934879 | 1989-10-19 | ||
| DE4002156 | 1990-01-25 | ||
| DE4002156A DE4002156A1 (en) | 1989-10-19 | 1990-01-25 | STORAGE DEVICE FOR BONDED BAGS |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0423481A1 EP0423481A1 (en) | 1991-04-24 |
| EP0423481B1 true EP0423481B1 (en) | 1994-04-13 |
Family
ID=25886259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP90117412A Expired - Lifetime EP0423481B1 (en) | 1989-10-19 | 1990-09-10 | Delivery device for bags with a glued bottom |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US5131973A (en) |
| EP (1) | EP0423481B1 (en) |
| JP (1) | JP3103585B2 (en) |
| BR (1) | BR9005246A (en) |
| CA (1) | CA2026859C (en) |
| DE (2) | DE4002156A1 (en) |
| ES (1) | ES2051426T3 (en) |
| RU (1) | RU2018450C1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2714328B1 (en) * | 1993-12-24 | 1996-02-16 | Picardie Lainiere | LAMINATION PRESS |
| JPH0741996U (en) * | 1993-12-28 | 1995-07-21 | 東日本旅客鉄道株式会社 | Terminal board and protector attached to the terminal board |
| DE19739042A1 (en) * | 1997-09-05 | 1999-03-11 | Kannegiesser H Gmbh Co | Method and device for connecting flexible fabrics |
| DE10054254A1 (en) * | 2000-11-02 | 2002-05-16 | Windmoeller & Hoelscher | Device for pressing the areas of continuously conveyed flat objects glued with adhesive |
| JP2003102770A (en) * | 2001-09-28 | 2003-04-08 | Johnson & Johnson Kk | Seal device |
| ES2319979T3 (en) * | 2002-08-20 | 2009-05-18 | Ferag Ag | DEVICE FOR THE TREATMENT OF FLAT OBJECTS, ESPECIALLY FOR PACKING PRINTED PRODUCTS. |
| DE10337216A1 (en) * | 2003-08-13 | 2005-03-17 | Windmöller & Hölscher Kg | Pressing device for bags provided with glued bottoms |
| AU2005249622B2 (en) * | 2004-06-02 | 2010-10-21 | Ferag Ag | Method and device for packaging flat articles |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE313866C (en) * | 1900-01-01 | |||
| DE1066854B (en) * | 1959-10-08 | Erwin Behn Verpackungsbedarf G.m.b.H., Krefeld | Process for drying glued cross-bottom sacks made of paper or similar material | |
| DE211597C (en) * | 1900-01-01 | |||
| US1676005A (en) * | 1928-07-03 | Gumming machine | ||
| DE442805C (en) * | 1924-06-16 | 1927-04-08 | Spicers Ltd | Machine for gumming envelopes spread like a fan between conveyor belts fed to the adhesive feeder and to be fed past the drying device |
| DE511159C (en) * | 1925-11-07 | 1930-10-27 | Alfred Winkler | Device for drying glued flat bags |
| CH138330A (en) * | 1928-03-17 | 1930-02-28 | Hesser Ag Maschf | Device for the continuous drying of lacquer areas applied to a paper web, in particular for the production of window envelopes. |
| DE530526C (en) | 1930-03-23 | 1931-07-30 | Windmoeller & Hoelscher G M B | Depositing device on paper sack machines |
| US2032503A (en) * | 1932-05-02 | 1936-03-03 | John A Rosmait | Process and apparatus for sealing paper bags |
| US2119951A (en) * | 1936-02-20 | 1938-06-07 | Dunnebier Max | Process and apparatus for the manufacture of envelopes, bags, and similar articles |
| US2242799A (en) * | 1936-09-24 | 1941-05-20 | Edmund B Moore | Heat sealing envelope machine |
| GB762264A (en) * | 1954-11-16 | 1956-11-28 | Alfred Windmoller | A method of, and apparatus for, making bags from tubing of thermoplastic or thermoplastic-coated material |
| US3107984A (en) * | 1961-04-04 | 1963-10-22 | Smithe Machine Co Inc F L | High speed dryer |
| DE1298873B (en) | 1967-05-22 | 1969-07-03 | Miag Muehlenbau & Ind Gmbh | Plant for the production of bags |
| US4488928A (en) * | 1983-05-16 | 1984-12-18 | Kimberly-Clark Corporation | Method and apparatus for forming soft, bulky absorbent webs and resulting product |
-
1990
- 1990-01-25 DE DE4002156A patent/DE4002156A1/en not_active Withdrawn
- 1990-09-10 EP EP90117412A patent/EP0423481B1/en not_active Expired - Lifetime
- 1990-09-10 ES ES90117412T patent/ES2051426T3/en not_active Expired - Lifetime
- 1990-09-10 DE DE59005347T patent/DE59005347D1/en not_active Expired - Lifetime
- 1990-10-03 CA CA002026859A patent/CA2026859C/en not_active Expired - Lifetime
- 1990-10-09 JP JP02272066A patent/JP3103585B2/en not_active Expired - Lifetime
- 1990-10-18 RU SU904831259A patent/RU2018450C1/en active
- 1990-10-18 BR BR909005246A patent/BR9005246A/en not_active IP Right Cessation
- 1990-10-19 US US07/599,798 patent/US5131973A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CA2026859C (en) | 1995-03-28 |
| EP0423481A1 (en) | 1991-04-24 |
| ES2051426T3 (en) | 1994-06-16 |
| JP3103585B2 (en) | 2000-10-30 |
| US5131973A (en) | 1992-07-21 |
| DE4002156A1 (en) | 1991-05-02 |
| CA2026859A1 (en) | 1991-04-20 |
| BR9005246A (en) | 1991-09-17 |
| JPH03164235A (en) | 1991-07-16 |
| RU2018450C1 (en) | 1994-08-30 |
| DE59005347D1 (en) | 1994-05-19 |
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