EP0432424B1 - Device for separating a continuous conveyed overlapping formation of flat products - Google Patents
Device for separating a continuous conveyed overlapping formation of flat products Download PDFInfo
- Publication number
- EP0432424B1 EP0432424B1 EP90120517A EP90120517A EP0432424B1 EP 0432424 B1 EP0432424 B1 EP 0432424B1 EP 90120517 A EP90120517 A EP 90120517A EP 90120517 A EP90120517 A EP 90120517A EP 0432424 B1 EP0432424 B1 EP 0432424B1
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- EP
- European Patent Office
- Prior art keywords
- belts
- conveying belt
- conveying
- stream
- separating
- 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
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H33/00—Forming counted batches in delivery pile or stream of articles
- B65H33/12—Forming counted batches in delivery pile or stream of articles by creating gaps in the stream
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
- B65H29/66—Advancing articles in overlapping streams
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
- B65H29/68—Reducing the speed of articles as they advance
Definitions
- the invention relates to a device for separating a continuously conveyed stream of shingled flat workpieces, preferably bags or sacks, with two successive endless conveyor belts, of which the second downstream conveyor belt is driven at increased speed to pull the shingle stream apart at the rate of shed separation and after the separation of the shingled stream into a leading and a trailing part is driven again at the same speed as the first conveyor belt, and with a separating device arranged between the two conveyor belts.
- a device of this type according to the preamble of claim 1 is known from CH-A-662 330.
- the separating device In a device of this type known from DE-OS 28 52 603, the separating device consists of an endless conveyor which overlaps the second conveyor belt and can be driven independently of the first conveyor belt, which is arranged over a part of its circumference and takes over the shingled stream from the first conveyor belt and over it has second conveyor belt holding cross bars, so that the intermittently driven at higher speed second conveyor belt pulls the shingled stream apart to create a gap.
- the known device does not make it possible to achieve a perfect separation of the scale flow in such a way that parts leading from the scale flow with a precisely predetermined number of workpieces. In the known device, it cannot be predicted with certainty at which point the scale flow is pulled apart to separate a leading scale flow part. In particular, the separation of a shingled stream is problematic in the known device if it consists of thin lobed workpieces.
- the object of the invention is therefore to provide a device of the type specified at the outset, with which shingled stream parts leading from a shingled stream can be separated with a precisely predetermined number of workpieces. Furthermore, a device is to be created with which shingled streams can also be separated from thin lobed workpieces.
- this object is achieved in a device of the generic type in that the separating device consists of an endless intermediate conveyor belt, which runs parallel to the starting area of the second conveyor belt, rotates at a lower speed than the second conveyor belt during the separating process and that with a device for holding at least the first workpiece of the trailing shingled stream is provided.
- the first workpiece of the trailing shingled stream part is held on the intermediate belt conveyor and fixed thereon, so that the shingled stream can be pulled apart at a predetermined point to create a gap without the individual workpieces of the shingled stream parts even being displaced if they are made of thin lobed material.
- the intermediate conveyor belt consists of at least two belts running parallel to one another, which are arranged between outer conveyor strands of the second conveyor belt, that the belts in Equal distances are provided with two cams that the belts are below the conveying plane of the conveying strands of the second conveyor belt and that the cams extend during the intermittent run over the upper strands of the intermediate belt conveyor during the separation process over the conveying plane of the second conveyor belt, and that above the Belts of the second intermediate belt conveyor are arranged endless counter-pressure belts against which the cams press the front end of the trailing stream of shingles.
- the belts of the intermediate belt conveyor can also enclose the individual belts of the second conveyor belt between them.
- the two cams arranged on each belt of the intermediate belt conveyor are in the ready position of the intermediate belt conveyor in the area of the respective front and rear surface lines of the deflection rollers of the belts. They change their position during a separating process in which they each run over the upper strands of the ligaments.
- the endless counter-pressure belts expediently run over freely rotatable deflection rollers which are mounted at the ends of pivotably mounted, inclined links.
- the counter pressure belts can generate the necessary pressure due to the weight of their deflection rollers and linkage.
- the links are expediently connected to one another by coupling rods to form a four-joint parallel link system.
- pressure medium cylinders are pivotally mounted in the machine frame above the lower run of the pressure belts, the piston rods of which carry press rams at their free ends, which at the start of the separation process can be lowered onto the overlapping area of the last workpiece of the leading part of the scale stream to be separated .
- both the first workpiece of the subsequent shingled stream part and the last workpiece of the leading shingled stream part to be separated are clamped, so that due to the differential speeds a safe pulling apart of the shingled stream is ensured without fear of uncontrolled displacements of the workpieces.
- a spring can be provided which holds the cylinder in its ready position at a stop.
- the pivot bearing of the cylinders and the stops are expediently adjustable in the longitudinal direction for adjustment to different workpiece lengths.
- the cylinder is expediently a pneumatic cylinder.
- the distance of the projections of the cylinder projections onto the shingled stream from the upper center lines of the rear deflection rollers of the intermediate belt conveyors can correspond approximately to a workpiece length in such a way that the rear cams, when they rotate, clamp the first workpiece of the subsequent part of the shingled stream to be separated, while the Place the ram on the last workpiece of the leading part of the shingled stream to be separated.
- Fig.1 only the rear side wall 1 of two side walls 1, 2 is shown, between which a feed conveyor belt 3 is mounted.
- This feed conveyor belt 3 is adjoined by a first conveyor belt pair 4 in a level which is lower than the plane of the feed belt 3, which is followed by a second conveyor belt pair 5.
- Both the conveyor belt pair 4 and the conveyor belt pair 5 can be driven by separate motors 6 and 7, respectively.
- An intermediate conveyor belt pair 8 overlaps, as can be seen in particular in FIG. 2, the two conveyor belt pairs 4 and 5.
- the intermediate conveyor belt pair 8 is driven by a separate motor 9. This motor drives the shaft 10, which drives the two belts 8 'or 8 '' of the conveyor belt pair 8 loop around.
- the shaft 10 ' is mounted in the two side walls 1 and 2 so that the two conveyor belts 8' and 8 '' run below the level of the conveyor belt pair 5.
- the second shaft 11 carrying the conveyor belts 8 'and 8'' serves at the same time as a deflection for the conveyor belt pair 4.
- the shaft 11 is offset in such a way that it has a smaller diameter in the area in which it is wrapped by the conveyor belts 8 'and 8''than in the area in which it has the conveyor belts 4' and 4 '' of the conveyor belt pair 4 carries.
- a pressure belt 15 is provided which rests on the sheet stream 12 from above.
- This belt loops around two rollers 16 and 17, which are connected to a cross member 19 via a parallelogram linkage 18. The latter is firmly connected to two cross members 20 and 21 which are supported on the two side walls 1 and 2.
- a piston-cylinder unit 22 is further articulated, which is held by a spring 23 against a stop 24.
- a stamp 25 is provided, which is preferably made of elastic material, such as rubber. The distance between the piston-cylinder unit 22 and the roller 17 can be changed in a manner not shown in such a way that the plunger 25, after the piston rod 22 has been extended, presses onto the leading end of the bag, which is no longer captured by the cam 14.
- the motor 9 of the intermediate conveyor belt pair 8 is switched on.
- the cam 14 located on the left in FIG. 1 moves clockwise, presses the scale stream 12 from below and presses it against the pressure belt 15, which is then raised around the articulation points of the parallelogram linkage 18 on the cross member 19.
- the motor 7 of the conveyor belt pair 5 is driven at a higher speed than the two synchronous motors 6 and 9, so that the scale flow part located in front of the left cam 14 is removed at high speed.
- the ram 25 of the piston-cylinder unit 22 is lowered as the motor 7 accelerates. He presses on the leading edge of the last sack of the scale flow part, which is to be removed at high speed, and presses this last sack onto a conveyor belt of the pair of conveyor belts 5.
- the piston-cylinder unit then swivels counter to that while simultaneously extending the piston rod 22 ' Clockwise around its articulation point on the cross member 19.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
- Structure Of Belt Conveyors (AREA)
- Forming Counted Batches (AREA)
- Attitude Control For Articles On Conveyors (AREA)
Description
Die Erfindung betrifft eine Vorrichtung zur Trennung eines kontinuierlich geförderten Stroms von geschuppt übereinander liegenden flachen Werkstücken, vorzugweise von Beuteln oder Säcken, mit zwei aufeinander folgenden endlosen Förderbändern, von denen das zweite stromabwärts angeordnete Förderband im Takt der Schuppentrennung mit erhöhter Geschwindigkeit zum Auseinanderziehen des Schuppenstromes angetrieben und nach der Trennung des Schuppenstromes in einen vorlaufenden und einen nachlaufenden Teil wieder mit der gleichen Geschwindigkeit wie das erste Förderband angetrieben wird, und mit einer zwischen den beiden Förderbändern angeordneten Trenneinrichtung.The invention relates to a device for separating a continuously conveyed stream of shingled flat workpieces, preferably bags or sacks, with two successive endless conveyor belts, of which the second downstream conveyor belt is driven at increased speed to pull the shingle stream apart at the rate of shed separation and after the separation of the shingled stream into a leading and a trailing part is driven again at the same speed as the first conveyor belt, and with a separating device arranged between the two conveyor belts.
Aus der CH-A- 662 330 ist eine Vorrichtung dieser Art gemäß dem Oberbegriff des Anspruchs 1 bekannt.A device of this type according to the preamble of
Bei einer aus der DE-OS 28 52 603 bekannten Vorrichtung dieser Art besteht die Trenneinrichtung aus einem das zweite Förderband überlagernden, unabhängig von dem ersten Förderband antreibbaren Endlosförderer, der über einen Teil seines Umfanges angeordnete, den Schuppenstrom vom ersten Förderband übernehmende und ihn über dem zweiten Förderband haltende Querleisten aufweist, so daß das intermittierend mit höherer Geschwindigkeit angetriebene zweite Förderband den Schuppenstrom zum Erzeugen einer Lücke auseinanderzieht. Die bekannte Vorrichtung ermöglicht es nicht, eine einwandfreie Trennung des Schuppenstromes in der Weise zu erzielen, daß sich von dem Schuppenstrom vorauslaufende Teile mit genau vorherbestimmter Anzahl von Werkstücken abtrennen lassen. Bei der bekannten Vorrichtung läßt sich nämlich nicht mit Sicherheit voraussagen, an welcher Stelle der Schuppenstrom zur Abtrennung eines vorauslaufenden Schuppenstromteils auseinandergezogen wird. Insbesondere ist bei der bekannten Vorrichtung die Trennung eines Schuppenstromes problematisch, wenn dieser aus dünnen lappigen Werkstücken besteht.In a device of this type known from DE-OS 28 52 603, the separating device consists of an endless conveyor which overlaps the second conveyor belt and can be driven independently of the first conveyor belt, which is arranged over a part of its circumference and takes over the shingled stream from the first conveyor belt and over it has second conveyor belt holding cross bars, so that the intermittently driven at higher speed second conveyor belt pulls the shingled stream apart to create a gap. The known device does not make it possible to achieve a perfect separation of the scale flow in such a way that parts leading from the scale flow with a precisely predetermined number of workpieces. In the known device, it cannot be predicted with certainty at which point the scale flow is pulled apart to separate a leading scale flow part. In particular, the separation of a shingled stream is problematic in the known device if it consists of thin lobed workpieces.
Aufgabe der Erfindung ist es daher, eine Vorrichtung der eingangs angegebenen Art zu schaffen, mit der sich von einem Schuppenstrom vorauslaufende Schuppenstromteile mit genau vorherbestimmter Anzahl von Werkstücken abtrennen lassen. Weiterhin soll eine Vorrichtung geschaffen werden, mit der sich auch Schuppenströme aus dünnen lappigen Werkstücken trennen lassen.The object of the invention is therefore to provide a device of the type specified at the outset, with which shingled stream parts leading from a shingled stream can be separated with a precisely predetermined number of workpieces. Furthermore, a device is to be created with which shingled streams can also be separated from thin lobed workpieces.
Erfindungsgemäß wird diese Aufgabe bei einer Vorrichtung der gattungsgemäßen Art dadurch gelöst, daß die Trenneinrichtung aus einem endlosen Zwischenförderband besteht, das parallel zu dem Anfangsbereich des zweiten Förderbandes verläuft, während des Trennvorganges mit geringerer Geschwindigkeit umläuft als das zweite Förderband und daß mit einer Einrichtung zum Festhalten mindestens des ersten Werkstücks des nachlaufenden Schuppenstromes versehen ist. Bei der erfindungsgemäßen Vorrichtung wird das erste Werkstück des nachlaufenden Schuppenstromteils auf dem Zwischenbandförderer festgehalten und an diesem fixiert, so daß der Schuppenstrom an vorbestimmter Stelle zur Erzeugung einer Lücke auseinandergezogen werden kann, ohne daß es selbst dann zu einem Verlagern der einzelnen Werkstücke der Schuppenstromteile kommen kann, wenn diese aus dünnem lappigen Material bestehen.According to the invention, this object is achieved in a device of the generic type in that the separating device consists of an endless intermediate conveyor belt, which runs parallel to the starting area of the second conveyor belt, rotates at a lower speed than the second conveyor belt during the separating process and that with a device for holding at least the first workpiece of the trailing shingled stream is provided. In the device according to the invention, the first workpiece of the trailing shingled stream part is held on the intermediate belt conveyor and fixed thereon, so that the shingled stream can be pulled apart at a predetermined point to create a gap without the individual workpieces of the shingled stream parts even being displaced if they are made of thin lobed material.
Nach einer vorteilhaften Ausgestaltung ist vorgesehen, daß das Zwischenförderband aus mindestens zwei parallel zueinander verlaufenden Bändern besteht, die zwischen äußeren Fördertrumen des zweiten Förderbandes angeordnet sind, daß die Bänder in gleichen Abständen mit zwei Nocken versehen sind, daß die Bänder unterhalb der Förderebene der Fördertrume des zweiten Förderbandes liegen und sich die Nocken bei dem intermittierenden Lauf über die oberen Trume des Zwischenbandförderers während des Trennvorganges bis über die Förderebene des zweiten Förderbandes erstrecken, und daß oberhalb der Bänder des zweiten Zwischenbandförderers endlose Gegendruckbänder angeordnet sind, gegen die die Nocken das vordere Ende des nachlaufenden Schuppenstroms drücken. Nach dieser Ausgestaltung ist sichergestellt, daß die Nocken durch eine entsprechende Steuerung des Antriebes des Zwischenbandförderers das erste Werkstück des nachlaufenden Schuppenstromteils gegen die Gegendruckbänder festklemmen, so daß der Schuppenstrom an genau vorherbestimmter Stelle getrennt und der abgetrennte vorauslaufende Schuppenstromteil mit erhöhter Geschwindigkeit zur Erzeugung einer Lücke abgefördert werden kann.According to an advantageous embodiment, it is provided that the intermediate conveyor belt consists of at least two belts running parallel to one another, which are arranged between outer conveyor strands of the second conveyor belt, that the belts in Equal distances are provided with two cams that the belts are below the conveying plane of the conveying strands of the second conveyor belt and that the cams extend during the intermittent run over the upper strands of the intermediate belt conveyor during the separation process over the conveying plane of the second conveyor belt, and that above the Belts of the second intermediate belt conveyor are arranged endless counter-pressure belts against which the cams press the front end of the trailing stream of shingles. According to this embodiment it is ensured that the cams clamp the first workpiece of the trailing shingled stream part against the counter pressure belts by a corresponding control of the drive of the intermediate belt conveyor, so that the shingled stream is separated at a precisely predetermined point and the separated leading shingled stream part is conveyed at increased speed to create a gap can be.
Selbstverständlich können die Bänder des Zwischenbandförderers die einzelnen Bänder des zweiten Förderbandes auch zwischen sich einfassen.Of course, the belts of the intermediate belt conveyor can also enclose the individual belts of the second conveyor belt between them.
Die auf jedem Band des Zwischenbandförderers angeordneten beiden Nocken befinden sich in der Bereitschaftsstellung des Zwischenbandförderers im Bereich der jeweils forderen und hinteren Mantellinien der Umlenkrollen der Bänder. Sie wechseln während eines Trennvorgangs, bei dem diese jeweils über die Obertrume der Bänder verlaufen, ihre Stellung.The two cams arranged on each belt of the intermediate belt conveyor are in the ready position of the intermediate belt conveyor in the area of the respective front and rear surface lines of the deflection rollers of the belts. They change their position during a separating process in which they each run over the upper strands of the ligaments.
Zweckmäßigerweise laufen die endlosen Gegendruckbänder über frei drehbar gelagerte Umlenkrollen, die an den Enden von schwenkbar gelagerten schräg liegenden Lenkern gelagert sind. Den erfoderlichen Andruck können die Gegendruckbänder aufgrund des Gewichts ihrer Umlenkrollen und Gestänge erzeugen.The endless counter-pressure belts expediently run over freely rotatable deflection rollers which are mounted at the ends of pivotably mounted, inclined links. The counter pressure belts can generate the necessary pressure due to the weight of their deflection rollers and linkage.
Zweckmäßigerweise sind die Lenker durch Koppelstangen zu einem Viergelenkparallellenkersystem miteinander verbunden.The links are expediently connected to one another by coupling rods to form a four-joint parallel link system.
Nach einer erfinderischen Weiterbildung ist vorgesehen, daß im Maschinengestell oberhalb des Untertrums der Andruckbänder Druckmittelzylinder schwenkbar gelagert sind, deren Kolbenstangen an ihren freien Enden Preßstempel tragen, die zu Beginn des Trennvorganges auf den überdeckungsfreien Bereich des letzten Werkstücks des zu trennenden vorlaufenden Teils des Schuppenstroms absenkbar sind. Bei dieser Ausgestaltung ist sowohl das erste Werkstück des nachfolgenden Schuppenstromteils als auch das letzte Werkstück des zu trennenden vorlaufenden Schuppenstromteils festgeklemmt, so daß aufgrund der Differenzgeschwindigkeiten ein sicheres Auseinanderziehen des Schuppenstromes gewährleistet ist, ohne daß unkontrollierte Verschiebungen der Werkstücke zu befürchten sind.According to an inventive development, it is provided that pressure medium cylinders are pivotally mounted in the machine frame above the lower run of the pressure belts, the piston rods of which carry press rams at their free ends, which at the start of the separation process can be lowered onto the overlapping area of the last workpiece of the leading part of the scale stream to be separated . In this embodiment, both the first workpiece of the subsequent shingled stream part and the last workpiece of the leading shingled stream part to be separated are clamped, so that due to the differential speeds a safe pulling apart of the shingled stream is ensured without fear of uncontrolled displacements of the workpieces.
Zur Rückstellung des Zylinders nach dem Einfahren der Kolbenstange kann eine Feder vorgesehen sein, die den Zylinder an einem Anschlag in ihrer Bereitschaftsstellung hält.To reset the cylinder after retracting the piston rod, a spring can be provided which holds the cylinder in its ready position at a stop.
Die Schwenklagerung der Zylinder und die Anschläge sind zweckmäßigerweise in Längsrichtung zur Einstellung auf unterschiedliche Werkstücklängen verstellbar.The pivot bearing of the cylinders and the stops are expediently adjustable in the longitudinal direction for adjustment to different workpiece lengths.
Zweckmäßigerweise handelt es sich bei dem Zylinder um einen Pneumatikzylinder.The cylinder is expediently a pneumatic cylinder.
Der Abstand der auf den Schuppenstrom projizierten Verlängerungen der Zylinder von den oberen Mittellinien der hinteren Umlenkrollen der Zwischenbandförderer kann in der Weise etwa einer Werkstücklänge entsprechen, daß die hinteren Nocken bei ihrem Umlauf das erste Werkstück des nachfolgenden Teils des zu trennenden Schuppenstroms festklemmen, während sich die Preßstempel auf das letzte Werkstück des vorlaufenden Teils des zu trennenden Schuppenstroms legen.The distance of the projections of the cylinder projections onto the shingled stream from the upper center lines of the rear deflection rollers of the intermediate belt conveyors can correspond approximately to a workpiece length in such a way that the rear cams, when they rotate, clamp the first workpiece of the subsequent part of the shingled stream to be separated, while the Place the ram on the last workpiece of the leading part of the shingled stream to be separated.
Ein Ausführungsbeispiel der Erfindung wird nachstehend anhand der Zeichnung näher erläutert. In dieser zeigt
- Fig.1
- eine Seitenansicht der Vorrichtung zur Trennung des Schuppenstroms und
- Fig.2
- eine Draufsicht auf die Vorrichtung nach Fig.1, wobei der besseren Übersichtlichkeit halber lediglich der unter der Schuppenebene befindliche Vorrichtungsteil dargestellt ist.
- Fig. 1
- a side view of the device for separating the shingled stream and
- Fig. 2
- a plan view of the device of Figure 1, for the sake of clarity only the device part located below the scale level is shown.
In Fig.1 ist nur die hintere Seitenwand 1 von zwei Seitenwänden 1,2 dargestellt, zwischen denen ein Zuführförderband 3 gelagert ist. An dieses Zuführförderband 3 schließt sich in ein einer Ebene, die tiefer liegt als die Ebene des Zuführbandes 3 ein erstes Förderbandpaar 4 an, dem ein zweites Förderbandpaar 5 nachgeschaltet ist. Sowohl das Förderbandpaar 4 als auch das Förderbandpaar 5 ist über je einen separaten Motor 6 bzw. 7 antreibbar. Ein Zwischenförderbandpaar 8 überlappt, wie insbesondere aus der Figur 2 zu erkennen ist, die beiden Förderbandpaare 4 und 5. Der Antrieb des Zwischenförderbandpaares 8 geschieht über einen separaten Motor 9. Dieser Motor treibt die Welle 10 an, die die beiden Bänder 8' bzw. 8'' des Förderbandpaares 8 schlaufenartig umschlingen. Wie aus Figur 1 zu erkennen ist, ist die Welle 10' so in den beiden Seitenwänden 1 und 2 gelagert, daß die beiden Förderbänder 8' und 8'' unterhalb der Ebene des Förderbandpaares 5 verlaufen. Die zweite die Förderbänder 8' und 8'' tragende Welle 11 dient gleichzeitig als Umlenkung für das Förderbandpaar 4. Um auch hier zu erreichen, daß das Zwischenförderbandpaar in einer Ebene verläuft, die sich mehrmals unterhalb der Förderebene des Schuppenstromes 12 befindet, ist die Welle 11 abgesetzt, und zwar derart, daß sie in dem Bereich, in dem sie von den Förderbändern 8' und 8'' umschlungen ist, einen geringeren Durchmesser aufweist als in dem Bereich, in dem sie die Förderbänder 4' und 4'' des Förderbandpaares 4 trägt. Die Absätze 13 der Welle 11, die von den Förderbändern 4' und 4'' des Föderbandpaares 4 umschlungen sind, sind Freiläufe bzw.frei drehbar gelagerte Buchsen, so daß die Förderbandpaare 4 und 8 durch die ihnen zugeordneten Motore 6 und 9 unabhängig voneinander angetrieben werden können. Die Förderbänder 8' und 8'' sind mit Nocken 14 besetzt, die die im Falle des Normaltransportes die in den Figuren 1 und 2 dargestellte Lage einnehmen. Oberhalb der Förderbandpaare 4,5 und 8 ist ein Andrückband 15 vorgesehen, das von oben auf dem Bogenstrom 12 aufliegt. Dieses Band umschlingt zwei Rollen 16 und 17, die über ein Parallelogrammgestänge 18 mit einem Querträger 19 verbunden sind. Letzterer ist fest mit zwei sich an den beiden Seitenwänden 1 und 2 abstützenden Traversen 20 und 21 verbunden. Mit einem Querträger 19 ist weiterhin eine Kolben-Zylinder-Einheit 22 gelenkig verbunden, die über eine Feder 23 gegen einen Anschlag 24 gehalten wird. Am vorderen Ende der Kolbenstange 22' der Kolben-Zylinder-Einheit 22 ist ein Stempel 25 vorgesehen, der vorzugsweise aus elastischem Material, beispielsweise aus Gummi, besteht. Der Abstand der Kolben-Zylinder-Einheit 22 zur Rolle 17 ist auf nicht dargestellte Weise veränderbar, derart, daß der Stempel 25 nach dem Ausfahren der Kolbenstange 22' auf das vorlaufende Ende des Sackes aufdrückt, der vom Nocken 14 nicht mehr erfaßt wird.In Fig.1 only the
Soll nun eine Schuppentrennung erfolgen, wird der Motor 9 des Zwischenförderbandpaares 8 eingeschaltet. Der in Figur 1 auf der linken Seite befindliche Nocken 14 bewegt sich im Uhrzeigersinn, drückt von unten den Schuppenstrom 12 nach oben und preßt ihn gegen das Andrückband 15, welches dann um die Anlenkpunkte des Parallelogrammgestänges 18 am Querträger 19 angehoben wird.If a shed separation is now to take place, the motor 9 of the intermediate
Sodann wird der Motor 7 des Förderbandpaares 5 mit höherer Geschwindigkeit angetrieben als die zwei gleichlaufenden Motoren 6 und 9, so daß der vor dem linken Nocken 14 befindliche Schuppenstromteil mit hoher Geschwindigkeit abgefördert wird. Um eine saubere Trennung zu erreichen, wird zusätzlich zur Erhöhung der Geschwindigkeit des Förderbandpaares 5 mit dem Beschleunigen des Motors 7 der Stempel 25 der Kolben-Zylinder-Einheit 22 abgesenkt. Er drückt auf vorlaufende Kante des letzten Sackes des Schuppenstromteiles, der mit hoher Geschwindigkeit abgefördert werden soll und preßt diesen letzten Sack auf ein Förderband des Förderbandpaares 5. Im weiteren Verlauf schwenkt dann die Kolben-Zylinder-Einheit unter gleichzeitigem Ausfahren der Kolbenstange 22' entgegen dem Uhrzeigersinn um ihren Anlenkpunkt and dem Querträger 19. Kurz darauf wird dann die Kolbenstange 22' eingefahren und die Kolben-Zylinder-Einheit durch die Feder 23 wieder gegen den Anschlag 24 zurückgezogen. Sobald der in Figur 1 auf der linken Seite dargestellte Nocken 14 bis in die Stellung gefahren ist, die im dargestellten Beispiel der Nocken 14' einnimmt, wird der Motor 9 des Zwischenförderbandpaares 8 abgestellt und der Motor 7 des zweiten Förderbandpaares 5 gedrosselt, so daß die Motoren 6 und 7 nunmehr mit gleicher Geschwindigkeit laufen. Das Andrückpaar 15 liegt dann wieder auf dem Schuppenstrom 12 auf, und zwar nur zum Teil, wie dies aus der Figur 2 zu erkennen ist.Then the
Wenn im Vorstehenden nur von einem Andrückband 15 und von einer Kolben-Zylinder-Einheit 22 die Rede ist, so ist dies der Einfachheit halber geschehen. Aus Figur 2 geht hervor, daß die in Figur 1 dargestellte Einrichtung zum Andrücken des Schuppenstromes zweimal vorhanden ist, und zwar ist jeder Seite des ersten Förderbandpaares und des zweiten Förderbandpaares ein Andruckband 5 und eine Kolben-Zylinder-Einheit 22 zugeordnet.If only a
Claims (8)
- Apparatus for separating a continuously conveyed stream (12) of flat workpieces, preferably bags or sacks, which are located one above the other in an imbricated manner, having two endless conveying belts (4, 5) which follow one after the other and of which the second, upstream conveying belt (5) is driven in time with the stream separation at an increased rate in order to spread apart the imbricated stream (12) and, after separation of the imbricated stream (12) into a leading and a trailing part, is driven once again at the same rate as the first conveying belt (4), and having a separating device which is arranged between the two conveying belts (4, 5) and comprises an endless intermediate conveying belt (8) running parallel to the starting region of the second conveying belt (5), characterized in that the intermediate conveying belt (8), which overlaps the second conveying belt, circulates at a lower rate, during the separating procedure, than the second conveying belt (5) and is provided with a device for securing at least the first workpiece of the trailing imbricated stream.
- Apparatus according to Claim 1, characterized in that the intermediate conveying belt (8) comprises at least two belts (8',8'') which run parallel to one another and are arranged between the outer conveying strands of the second conveying belt (5); in that the belts (8',8'') are provided, at the same intervals, with two cams (14,14'), in that the belts (8',8'') are located beneath the conveying plane of the conveying strands of the second conveying belt (5) and, during intermittent running, the came (14,14') extend over the upper strands of the intermediate belt conveyor (8), during the separating procedure, to a point over the conveying plane of the second conveying belt (5); and in that there are arranged, above the belts (8',8'') of the intermediate conveying belt (8), endless counter-pressure belts (15) against which the cams (14,14') press the front end of the trailing part of the imbricated stream.
- Apparatus according to Claim 2, characterized in that the endless counter-pressure belts (15) run over freely rotatably mounted deflection rollers (16,17) which are mounted at the ends of pivotably mounted, oblique links (18).
- Apparatus according to Claim 3, characterized in that the links (18) are connected by connecting rods to form a four-bar parallel link system.
- Apparatus according to one of the preceding claims, characterized in that pivotably mounted in the machine framework above the lower strand of the press-on belts (15) are pressure-medium cylinders (22) the piston rods (22') of which bear, at their free ends, pressing rams (25) which, at the beginning of the separating procedure, can be lowered onto the overlap-free region of the last workpiece of the leading part of the imbricated stream which is to be separated.
- Apparatus according to Claim 5, characterized in that there is provided, in order to restore the cylinder (22) after the retraction of the piston rod (22'), a tension spring (23) which holds the cylinder (22) in its standby position on a stop (24).
- Apparatus according to Claim 5 or 6, characterized in that the pivot mountings of the cylinder (22) and the stops (24) can be adjusted in the longitudinal direction.
- Apparatus according to one of Claims 5 to 7, characterized in that the distance of the extension, projected by the cylinder (22) onto the imbricated stream, from the upper surface lines of the rear deflection rollers (11) of the intermediate conveying belts (8) corresponds approximately to one workpiece length, in such a manner that the rear cams (14), when they rotate, fixedly clamp the first workpiece of the trailing part of the imbricated stream which is to be separated, whereas the pressing rams (25) are positioned on the last workpiece of the leading part of the imbricated stream which is to be separated.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3941184A DE3941184A1 (en) | 1989-12-13 | 1989-12-13 | DEVICE FOR SEPARATING A CONTINUOUSLY FLOWED CURRENT FROM PUPPED FLAT WORKPIECES |
| DE3941184 | 1989-12-13 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0432424A2 EP0432424A2 (en) | 1991-06-19 |
| EP0432424A3 EP0432424A3 (en) | 1991-10-16 |
| EP0432424B1 true EP0432424B1 (en) | 1994-07-27 |
Family
ID=6395394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP90120517A Expired - Lifetime EP0432424B1 (en) | 1989-12-13 | 1990-10-25 | Device for separating a continuous conveyed overlapping formation of flat products |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US5054763A (en) |
| EP (1) | EP0432424B1 (en) |
| JP (1) | JP2898086B2 (en) |
| CA (1) | CA2030844C (en) |
| DE (2) | DE3941184A1 (en) |
| DK (1) | DK0432424T3 (en) |
| ES (1) | ES2057326T3 (en) |
| FI (1) | FI100326B (en) |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2601959B2 (en) * | 1990-10-15 | 1997-04-23 | 富士写真フイルム株式会社 | Sheet transport sorting device |
| ES2071903T3 (en) * | 1991-01-25 | 1995-07-01 | Ferag Ag | DEVICE FOR THE FORMATION OF A HOLLOW IN AN IMBRICATED CURRENT. |
| US5244201A (en) * | 1991-06-20 | 1993-09-14 | Stacker Machine Co. | Signature stream interrupt apparatus and method |
| CH683095A5 (en) * | 1991-06-27 | 1994-01-14 | Ferag Ag | Method and apparatus for buffering of printed products in imbricated formation. |
| US5417360A (en) * | 1993-09-28 | 1995-05-23 | Moore Business Forms, Inc. | Feeding of offset, collated forms |
| US6048060A (en) * | 1996-11-11 | 2000-04-11 | Toshiba Tec Kabushiki Kaisha | Printing medium discharge apparatus used in an ink jet printer |
| US6022017A (en) * | 1998-06-02 | 2000-02-08 | Marquip, Inc. | Method for handling a small gap order change in a corrugator |
| DE19846032C2 (en) * | 1998-10-06 | 2002-06-20 | Windmoeller & Hoelscher | Device for depositing flat objects which are conveyed one after the other onto a further conveyor in a shingled formation one above the other |
| US6427999B1 (en) | 1999-02-17 | 2002-08-06 | Quad/Tech, Inc. | Signature hopper loader apparatus and method |
| DE19921169C2 (en) * | 1999-05-07 | 2003-03-13 | Roland Man Druckmasch | Device for braking sheets of paper |
| FR2795396B1 (en) * | 1999-06-22 | 2001-07-20 | Mannesmann Dematic Postal Automation Sa | DEVICE FOR TRANSFERRING FLAT OBJECTS WITH AN INJECTOR WITH ELASTICALLY DEFORMABLE WHEELS |
| DE19940406C1 (en) * | 1999-08-25 | 2000-10-26 | Boewe Systec Ag | Gatherer for cut printed sheets takes offset sheets with structured speed changes and braking actions to move them in pairs to the binder in succession |
| DE19945114A1 (en) * | 1999-09-21 | 2001-03-22 | Jagenberg Papiertech Gmbh | Device for cross-cutting material webs, in particular cardboard webs |
| DE10115251A1 (en) * | 2001-03-28 | 2002-10-10 | Gaemmerler Ag | log stacker |
| US7222844B2 (en) * | 2002-03-29 | 2007-05-29 | Quad/Graphics, Inc. | Hopper loader with lateral deblocking |
| SE524671C2 (en) * | 2003-01-16 | 2004-09-14 | Tetra Laval Holdings & Finance | Method and apparatus for separating overlapping objects conveyed on a conveyor path |
| DE10347807A1 (en) * | 2003-10-10 | 2005-05-25 | Syspro Gmbh System Produktionstechnik | Machine for reversing direction of overlap of magazines comprises conveyor belts which move at increasing speeds, magazines passing from these to curved turning section, after which they pass along conveyors moving at decreasing speeds |
| DE102004055325B4 (en) * | 2004-11-16 | 2007-08-16 | Windmöller & Hölscher Kg | Device for separating a conveyed stream of scalloped, flat workpieces |
| US20090243208A1 (en) * | 2006-07-17 | 2009-10-01 | Jean-Claude Rebeaud | Auxiliary drive device for the conveying of sheetson a feed table of a cutting press |
| US9399529B2 (en) * | 2010-08-09 | 2016-07-26 | Pack Flow Concepts Llc | Automated product engager, transporter and patterened depositor system |
| CN102424294A (en) * | 2011-08-11 | 2012-04-25 | 湖北京山轻工机械股份有限公司 | Automatic batching mechanism for corrugated board stacking machine |
| US9016683B2 (en) * | 2013-07-30 | 2015-04-28 | Ncr Corporation | Media item transportation |
| CN106395476B (en) * | 2016-08-02 | 2017-10-24 | 山西大同大学 | A kind of rewinding sectioning for printed matter |
| DE102016119577A1 (en) * | 2016-10-13 | 2018-04-19 | Gämmerler Gmbh | Method and apparatus for forming product stacks |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2852256A (en) * | 1955-09-09 | 1958-09-16 | Milprint Inc | Art of delivering flexible sheets |
| US3724840A (en) * | 1971-04-29 | 1973-04-03 | Windmoeller & Hoelscher | Stacking apparatus for sheet articles fed in overlapping formation on a continuously moving conveyor towards a stacking station |
| CA1009175A (en) * | 1974-04-19 | 1977-04-26 | Arthur G. Alsop | Stacking mechanism and method |
| DE2651690C2 (en) * | 1976-11-12 | 1981-10-29 | Windmöller & Hölscher, 4540 Lengerich | Device for group-wise separation of a predetermined number of continuously conveyed flat workpieces that overlap each other like scales |
| DE2710398A1 (en) * | 1977-03-10 | 1978-09-14 | Wilhelmstal Werke Gmbh | Item transporting and periodic retaining system - has braking shoe travelling in transport direction during braking period and driven towards transport belt |
| DE2852603C3 (en) | 1978-12-05 | 1981-07-23 | BHS-Bayerische Berg-, Hütten- und Salzwerke AG, 8000 München | Device for creating a predetermined gap in a stream of sheets that overlap in a scale-like manner |
| US4546871A (en) * | 1982-09-20 | 1985-10-15 | Harris Corporation | Gap maker |
| CH660353A5 (en) * | 1983-05-17 | 1987-04-15 | Grapha Holding Ag | METHOD AND DEVICE FOR DIVIDING A DOMESTIC CURRENT FROM PRINTED SHEETS IN PARTIAL SCALES. |
| US4552261A (en) * | 1983-12-27 | 1985-11-12 | Standard-Knapp, Inc. | Article grouper for case packer |
-
1989
- 1989-12-13 DE DE3941184A patent/DE3941184A1/en not_active Withdrawn
-
1990
- 1990-10-25 ES ES90120517T patent/ES2057326T3/en not_active Expired - Lifetime
- 1990-10-25 EP EP90120517A patent/EP0432424B1/en not_active Expired - Lifetime
- 1990-10-25 DK DK90120517.9T patent/DK0432424T3/en active
- 1990-10-25 DE DE59006597T patent/DE59006597D1/en not_active Expired - Lifetime
- 1990-10-29 US US07/604,644 patent/US5054763A/en not_active Expired - Lifetime
- 1990-11-26 CA CA002030844A patent/CA2030844C/en not_active Expired - Lifetime
- 1990-11-28 JP JP2328738A patent/JP2898086B2/en not_active Expired - Lifetime
- 1990-12-11 FI FI906081A patent/FI100326B/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| CA2030844A1 (en) | 1991-06-14 |
| CA2030844C (en) | 1998-12-29 |
| EP0432424A2 (en) | 1991-06-19 |
| DE3941184A1 (en) | 1991-06-20 |
| DE59006597D1 (en) | 1994-09-01 |
| JPH03211164A (en) | 1991-09-13 |
| FI906081A (en) | 1991-06-14 |
| US5054763A (en) | 1991-10-08 |
| EP0432424A3 (en) | 1991-10-16 |
| FI906081A0 (en) | 1990-12-11 |
| JP2898086B2 (en) | 1999-05-31 |
| ES2057326T3 (en) | 1994-10-16 |
| FI100326B (en) | 1997-11-14 |
| DK0432424T3 (en) | 1994-10-03 |
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