EP0844203B1 - Device for removing sheets from a pile and for transporting the sheets away from the pile - Google Patents
Device for removing sheets from a pile and for transporting the sheets away from the pile Download PDFInfo
- Publication number
- EP0844203B1 EP0844203B1 EP19970117801 EP97117801A EP0844203B1 EP 0844203 B1 EP0844203 B1 EP 0844203B1 EP 19970117801 EP19970117801 EP 19970117801 EP 97117801 A EP97117801 A EP 97117801A EP 0844203 B1 EP0844203 B1 EP 0844203B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- suction wheel
- wheel
- toothed
- toothed belt
- vacuum
- 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
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H3/00—Separating articles from piles
- B65H3/08—Separating articles from piles using pneumatic force
- B65H3/12—Suction bands, belts, or tables moving relatively to the pile
Definitions
- the invention relates to a device for removing sheets from a stack and to transport the sheets away from the stack with a toothed belt that meshes endlessly by at least a deflection wheel and a suction wheel is guided and in the same Has spaced openings, with a variety of connecting lines formed in the suction wheel, one of which Mouths on an end face of the suction wheel on a Suction wheel are concentric circle and their other mouths on the peripheral surface of the suction wheel at angular intervals for one Alignment with the openings in the toothed belt are provided, and with a vacuum block that can be connected to a vacuum shaft, which has a vacuum channel, which the one end face of the suction wheel is assigned so that it with the rotating suction wheel comes in vacuum contact with the connecting cable.
- the connecting line in the suction wheel has a radial one Section, making contact with the vacuum chamber in the vacuum block and two radial sections arranged side by side, which open out on the circumference and corresponding openings in the timing belt for alignment are assigned to them.
- the radial position of the vacuum block is adjustable.
- EP-0 155 475 B1 describes a device for removing Sheets from a stack and to transport the sheets away from Stack with a toothed belt that runs endlessly over conveyor rollers known that between two adjacent teeth each at least has a breakthrough.
- a guide block is defined that has a guide surface has a groove whose depth to the bottom of the groove essentially the thickness of the timing belt and its width essentially corresponds to its width, so that between neighboring Teeth and the groove side wall chambers are limited.
- the Guide block is for connection to a vacuum source with a suction opening, to which one is in the sheet transport direction extending, assigned to the openings Recess is connected.
- the toothed belt used in such a device has a low coefficient of friction compared to paper and therefore requires a relatively strong vacuum.
- the timing belts have a balanced one Relationship between the grooves and the in between lying teeth and a relatively large groove depth. This groove geometry in connection with the powerful vacuum can Markings on the sucked and transported sheet to lead.
- the toothed belts run with their backs over disc-like ones Drive and deflection wheels and are therefore difficult to keep on their course. Such an unstable timing belt run leads to strong inevitable lateral starting Wear of the timing belt.
- DE 87 06 576 U1 is also a device for acceptance of sheets from a stack and to transport the sheets from the stack using one constructed as described above Timing belt known, in which a deflection wheel on the arc side with large diameter in the form of two parallel, in Distance arranged disks is provided between which the guide block extends with the vacuum line.
- This device can also be used for short sheets of one Flat stack, the rear edge of which interacts with a suction lifter, or remove from a steep inclined stack and transport it away.
- the object of the invention is now to to design the device of the type described in the introduction, that with no risk of marking the bow of wear on the toothed belt is largely reduced.
- This task is based on the device of the beginning mentioned type in that for the tooth engagement between Toothed belt and suction wheel on this circumference two Toothed rings are provided, each of which is different from one Front extends to a central web, which is a peripheral Guideway with the other mouths of the connecting lines that the teeth of the timing belt only laterally in the area of the toothed rings of the suction wheel in the form of two toothed rings are provided and one formed between them Guide surface with the guideway of the suction wheel in Contact comes, with the breakthroughs and the other mouths the connecting lines are aligned so that the openings in grooves flow out according to the tooth pitch in one layer a high-friction material are formed on the side of the toothed belt is arranged, that of the teeth Side is opposite and that the suction wheel in the direction of the toothed belt a management block is immediately subordinate, which is a guideway for contact with the guiding surface of the timing belt.
- the Toothed belt guided over one-piece drive and deflection wheels become, i.e. like every toothed belt, it will be conventional with Flanged discs, which greatly reduces wear, while its frictional force is relatively large.
- the geometry of the chambers independent of the tooth geometry to get voted.
- Slightly lifting the sheet removed from the stack can be achieved in the device according to the invention by that the guide wheel and the guide block on a plate are arranged, which are arranged pivotable about the suction wheel axis is, and expediently from the horizontal in the direction of rotation of the suction wheel.
- the device shown in the drawing for the removal of Sheet 21 from a stack 22 and for transporting sheets 21 away from the stack 22 has a toothed belt 1 that is endless at least a deflection wheel 8 and a suction wheel 7 is guided.
- the toothed belt 1 has one on one side its longitudinal direction extending guide surface 3 to which a toothed ring 2 adjoins each side.
- the teeth of the two Toothed rings 2 are aligned in pairs at equal intervals, i.e. with a predetermined tooth pitch.
- a polyurethane layer 4 which corresponds to the Tooth pitch is provided with grooves 5.
- Each of the grooves is 5 connected to the guide surface 3 via an opening 6.
- the suction wheel 7 has a central web 13 on its circumference each has a tooth ring 9 adjacent to each other End face of the suction wheel 7 extends, the tooth pitch for meshing with the teeth of the toothed rings 2 of the toothed belt 1 is designed.
- the deflection wheel 8 is included Teeth on its circumferential surface that match those of Comb the toothed rings 2 of the toothed belt 1, which results in straight guidance of the toothed belt 1 is guaranteed, either from the deflection wheel 8 or driven by the suction wheel 7, which on a machine frame not shown are stored.
- connection lines 14 Extend from one end face 15 of suction wheel 7 themselves connecting lines 14, the mouths of which on a Suction wheel 7 are concentric circle.
- the connecting lines 14 each consist of an axial blind bore and one radial blind bore that merge into one another, the radial blind hole in the circumferential surface of the central web 13 ends where there is an opening 6 of the toothed belt 1 located.
- the central web 13 of the suction wheel 7 has a circumferential side Guideway 10 on which the guide surface 3 of the Timing belt 1 rests when the teeth of the toothed rings 9 of the Suction wheel 7 with the teeth of the toothed rings 2 of the toothed belt 1 comb.
- a vacuum block 16 arranged has a vacuum channel 17, which with an arrow marked vacuum source 12 can be connected in a clock-controlled manner.
- the connecting lines 14 come into contact with one another the vacuum channel 17 of the vacuum block 16, whereby the top sheet 21 of the stack 22 starts to the timing belt 1 and is transported away from it.
- the vacuum block 16 is in and against the direction of rotation Suction wheel 7 pivotable, which is indicated by a double arrow 19 is illustrated. By swiveling the Vacuum blocks 16 can be the suction point 24 for each position or adjust the top sheet 21 of the stack 22.
- the suction wheel 7 is immediate a guide block 11 with a guide surface 23 is arranged downstream.
- the guide block 11 is as close to the Suction wheel 7 arranged so that the conditional on the vacuum the suction force acting on the bow 21 between the suction point 24 from Fig. 1 to the guide surface 23 of the guide block only reduced so far that the removal of the sheet 21 along the Guide block 11 remains guaranteed, the guide surface 23 closes the opening (s) 6 and thus the residual vacuum maintained in the grooves 5.
- This residual vacuum is about 1/6 of the vacuum at the suction point 24, so that a lateral Aligning the sheet 21 on a ruler or the like by sliding on the guide surface 23 of the guide block 11 is possible without the necessary for transportation Adhesion is lost.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Delivering By Means Of Belts And Rollers (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
Description
Die Erfindung betrifft eine Vorrichtung zur Abnahme von Bogen von einem Stapel und zum Transport der Bogen weg vom Stapel mit einem Zahnriemen, der in Zahneingriff endlos um wenigstens ein Umlenkrad und ein Saugrad geführt ist und der in gleichen Abständen angeordnete Durchbrüche aufweist, mit einer Vielzahl von im Saugrad ausgebildeten Anschlußleitungen, deren eine Mündungen auf einer Stirnfläche des Saugrads auf einem zum Saugrad konzentrischen Kreis liegen und deren andere Mündungen an der Umfangsfläche des Saugrads in Winkelabständen für eine Fluchtung mit den Durchbrüchen im Zahnriemen vorgesehen sind, und mit einem mit einer Vakuumwelle verbindbaren Vakuumblock, der einen Vakuumkanal aufweist, welcher der einen Stirnfläche des Saugrads so zugeordnet ist, daß er bei drehendem Saugrad mit der Anschlußleitung in Vakuumkontakt kommt.The invention relates to a device for removing sheets from a stack and to transport the sheets away from the stack with a toothed belt that meshes endlessly by at least a deflection wheel and a suction wheel is guided and in the same Has spaced openings, with a variety of connecting lines formed in the suction wheel, one of which Mouths on an end face of the suction wheel on a Suction wheel are concentric circle and their other mouths on the peripheral surface of the suction wheel at angular intervals for one Alignment with the openings in the toothed belt are provided, and with a vacuum block that can be connected to a vacuum shaft, which has a vacuum channel, which the one end face of the suction wheel is assigned so that it with the rotating suction wheel comes in vacuum contact with the connecting cable.
Bei einer solchen, aus der US-A-4 750 730 bekannten Vorrichtung hat die Anschlußleitung in dem Saugrad einen radialen Abschnitt, einen Kontakt mit der Vakuumkammer in dem Vakuumblock sowie zwei nebeneinander angeordnete radiale Abschnitte, die umfangseitig münden und denen entsprechende Durchbrechungen in dem Zahnriemen für eine fluchtende Ausrichtung zu ihnen zugeordnet sind. Die radiale Position des Vakuumblocks ist einstellbar.In such a device known from US-A-4,750,730 the connecting line in the suction wheel has a radial one Section, making contact with the vacuum chamber in the vacuum block and two radial sections arranged side by side, which open out on the circumference and corresponding openings in the timing belt for alignment are assigned to them. The radial position of the vacuum block is adjustable.
Da die radialen Abschitte der Anschlußleitungen einen relativ kleinen Querschnitt haben, wirkt das angelegte Vakuum relativ stark auf die abzuhebenden Bogen, wodurch es zu Markierungen kommen kann. Da der Zahnriemen auf seiner ganzen Breite auf dem Saugrad läuft, kann es zu axialen Verschiebungen kommen.Since the radial sections of the connecting lines are relative have a small cross-section, the vacuum applied has a relative effect heavily on the sheet to be lifted, causing it to mark can come. Because the timing belt on its entire width the suction wheel runs, there may be axial displacements.
Aus der EP-0 155 475 B1 ist eine Vorrichtung zur Abnahme von Bogen von einem Stapel und zum Transport der Bogen weg vom Stapel mit einem über Förderrollen endlos umlaufenden Zahnriemen bekannt, der zwischen zwei benachbarten Zähnen jeweils wenigsten einen Durchbruch aufweist. Vorrichtungsseitig ist ein Führungsblock festgelegt, der eine Führungsfläche mit einer Nut aufweist, deren Tiefe bis zum Nutboden im wesentlichen der Stärke des Zahnriemens und deren Weite im wesentlichen seiner Breite entspricht, so daß zwischen benachbarten Zähnen und den Nutenseitenwänden Kammern begrenzt sind. Der Führungsblock ist zur Verbindung mit einer Vakuumquelle mit einer Saugöffnung versehen, an die eine sich in Bogentransportrichtung erstreckende, den Durchbrechungen zugeordnete Ausnehmung angeschlossen ist.EP-0 155 475 B1 describes a device for removing Sheets from a stack and to transport the sheets away from Stack with a toothed belt that runs endlessly over conveyor rollers known that between two adjacent teeth each at least has a breakthrough. Is on the device side a guide block is defined that has a guide surface has a groove whose depth to the bottom of the groove essentially the thickness of the timing belt and its width essentially corresponds to its width, so that between neighboring Teeth and the groove side wall chambers are limited. The Guide block is for connection to a vacuum source with a suction opening, to which one is in the sheet transport direction extending, assigned to the openings Recess is connected.
Der bei einer solchen Vorrichtung eingesetzte Zahnriemen hat einen geringen Reibwert gegenüber Papier und erfordert deshalb ein relativ kräftiges Vakuum. Die Zahnriemen haben ein ausgeglichenes Verhältnis zwischen den Nuten und den dazwischen liegenden Zähnen und eine relativ große Nuttiefe. Diese Nutgeometrie in Verbindung mit dem kräftigen Vakuum kann zu Markierungen auf dem angesaugten und transportierten Bogen führen. Die Zahnriemen laufen mit ihrem Rücken über scheibenartige Antriebs- und Umlenkräder und sind deshalb nur schwer in ihrer Bahn zu halten. Ein solcher instabiler Zahnriemenlauf führt beim unvermeidlichen seitlichen Anlaufen zu starkem Verschleiß des Zahnriemens.The toothed belt used in such a device has a low coefficient of friction compared to paper and therefore requires a relatively strong vacuum. The timing belts have a balanced one Relationship between the grooves and the in between lying teeth and a relatively large groove depth. This groove geometry in connection with the powerful vacuum can Markings on the sucked and transported sheet to lead. The toothed belts run with their backs over disc-like ones Drive and deflection wheels and are therefore difficult to keep on their course. Such an unstable timing belt run leads to strong inevitable lateral starting Wear of the timing belt.
Aus dem DE 87 06 576 U1 ist ferner eine Vorrichtung zur Abnahme von Bogen von einem Stapel und zum Transport der Bogen vom Stapel mit Hilfe eines wie vorstehend beschrieben aufgebauten Zahnriemens bekannt, bei welcher bogenseitig ein Umlenkrad mit großem Durchmesser in Form von zwei parallelen, im Abstand angeordneten Scheiben vorgesehen ist, zwischen denen sich der Führungsblock mit der Vakuumleitung erstreckt. Mit dieser Vorrichtung lassen sich auch kurze Bogen von einem Flachstapel, deren Hinterkante mit einem Saugheber zusammenwirkt, oder von einem steil aufgelegten Schrägstapel abnehmen und abtransportieren.DE 87 06 576 U1 is also a device for acceptance of sheets from a stack and to transport the sheets from the stack using one constructed as described above Timing belt known, in which a deflection wheel on the arc side with large diameter in the form of two parallel, in Distance arranged disks is provided between which the guide block extends with the vacuum line. With This device can also be used for short sheets of one Flat stack, the rear edge of which interacts with a suction lifter, or remove from a steep inclined stack and transport it away.
Die der Erfindung zugrunde liegende Aufgabe besteht nun darin, die Vorrichtung der eingangs beschriebenen Art so auszugestalten, daß ohne Markierungsgefahr für die Bogen der Verschleiß am Zahnriemen weitgehend reduziert wird.The object of the invention is now to to design the device of the type described in the introduction, that with no risk of marking the bow of wear on the toothed belt is largely reduced.
Diese Aufgabe wird ausgehend von der Vorrichtung der eingangs genannten Art dadurch gelöst, daß für den Zahneingriff zwischen Zahnriemen und Saugrad an diesem umfangsseitig zwei Zahnringe vorgesehen sind, von denen sich jeder von einer Stirnseite bis zu einem Mittelsteg erstreckt, der eine umfangsseitige Führungsbahn mit den anderen Mündungen der Anschlußleitungen bildet, daß die Zähne des Zahnriemens nur seitlich im Bereich der Zahnringe des Saugrades in Form von zwei Zahnringen vorgesehen sind und eine zwischen ihnen gebildete Führungsfläche mit der Führungsbahn des Saugrads in Kontakt kommt, wobei die Durchbrüche und die anderen Mündungen der Anschlußleitungen fluchten, daß die Durchbrüche in Nuten münden, die der Zahnteilung entsprechend in einer Schicht aus einem reibstarken Material ausgebildet sind, die auf der Seite des Zahnriemens angeordnet ist, die seiner die Zähne aufweisenden Seite gegenüberliegt und daß dem Saugrad in Zahnriemenlaufrichtung ein Führungsblock unmittelbar nachgeordnet ist, der eine Führungsbahn für einen Kontakt mit der Führungsfläche des Zahnriemens aufweist. This task is based on the device of the beginning mentioned type in that for the tooth engagement between Toothed belt and suction wheel on this circumference two Toothed rings are provided, each of which is different from one Front extends to a central web, which is a peripheral Guideway with the other mouths of the connecting lines that the teeth of the timing belt only laterally in the area of the toothed rings of the suction wheel in the form of two toothed rings are provided and one formed between them Guide surface with the guideway of the suction wheel in Contact comes, with the breakthroughs and the other mouths the connecting lines are aligned so that the openings in grooves flow out according to the tooth pitch in one layer a high-friction material are formed on the side of the toothed belt is arranged, that of the teeth Side is opposite and that the suction wheel in the direction of the toothed belt a management block is immediately subordinate, which is a guideway for contact with the guiding surface of the timing belt.
Bei der erfindungsgemäßen Vorrichtung kann einerseits der Zahnriemen über einteilige Antriebs- und Umlenkräder geführt werden, d.h. er wird wie jeder Zahnriemen konventionell mit Bordscheiben geführt, was den Verschleiß sehr stark reduziert, während seine Reibkraft relativ groß ist. Andererseits kann die Geometrie der Kammern unabhängig von der Zahngeometrie gewählt werden. Durch die Optimierung der Geometrie der Kammern läßt sich zusammen mit der Reibkraftsteigerung das für das Abnehmen und Transportieren des Bogens erforderliche Vakuum verringern, wodurch die Ausbildung von Markierungen am Bogen weitgehend ausgeschlossen wird. Aufgrund des Führungsblocks erfolgt der Abbau der bei der erfindungsgemäßen Vorrichtung von dem maximal anliegenden Vakuum erzeugten Ansaugkraft beim Weiterdrehen des Saugrades nicht abrupt, sondern verlangsamt, was ein ausreichendes Haften des Bogens für den Weitertransport gewährleistet, aber auch ein Ausrichten des Bogens zuläßt, wenn dieser gegen ein seitliches Lineal geführt wird.In the device according to the invention, on the one hand, the Toothed belt guided over one-piece drive and deflection wheels become, i.e. like every toothed belt, it will be conventional with Flanged discs, which greatly reduces wear, while its frictional force is relatively large. On the other hand, can the geometry of the chambers independent of the tooth geometry to get voted. By optimizing the geometry of the chambers can together with the increase in friction force for the removal and transportation of the sheet required Reduce vacuum, causing the formation of marks on the Arc is largely excluded. Because of the guide block takes place in the device according to the invention of the maximum suction force generated not abruptly when turning the suction wheel, but slows down, which is a sufficient adhesion of the bow for the Further transport guaranteed, but also an alignment of the Permits arch if it runs against a side ruler becomes.
Ein geringfügiges Anheben des vom Stapel abgenommenen Bogens läßt sich bei der erfindungsgemäßen Vorrichtung dadurch erreichen, daß das Umlenkrad und der Führungsblock an einer Platte angeordnet sind, die um die Saugradachse verschwenkbar angeordnet ist, und zwar zweckmäßigerweise aus der Horizontalen in der Drehrichtung des Saugrads.Slightly lifting the sheet removed from the stack can be achieved in the device according to the invention by that the guide wheel and the guide block on a plate are arranged, which are arranged pivotable about the suction wheel axis is, and expediently from the horizontal in the direction of rotation of the suction wheel.
Anhand von Zeichnungen wird ein Ausführungsbeispiel der Erfindung näher erläutert. Es zeigt:
- Fig. 1
- schematisch eine Ausgestaltung der Vorrichtung in einern Seitenansicht,
- Fig. 2
- den Schnitt II-II von Fig. 1,
- Fig. 3
- in einer Einzelheit eine Draufsicht auf einen Teil des Zahnriemens der Vorrichtung und
- Fig. 4
- den Schnitt IV-IV von Fig. 3.
- Fig. 1
- schematically an embodiment of the device in a side view,
- Fig. 2
- the section II-II of Fig. 1,
- Fig. 3
- in a detail a plan view of a part of the toothed belt of the device and
- Fig. 4
- the section IV-IV of Fig. 3rd
Die in der Zeichnung gezeigte Vorrichtung zur Abnahme von
Bogen 21 von einem Stapel 22 und zum Transport der Bogen 21
weg vom Stapel 22 hat einen Zahnriemen 1, der endlos um wenigsten
ein Umlenkrad 8 und ein Saugrad 7 geführt ist.The device shown in the drawing for the removal of
Der Zahnriemen 1 hat auf seiner einen Seite eine sich in
seiner Längsrichtung erstreckende Führungsfläche 3, an die an
jeder Seite ein Zahnring 2 angrenzt. Die Zähne der beiden
Zahnringe 2 sind fluchtend paarweise in gleichen Abständen,
d.h. mit vorgegebener Zahnteilung, angeordnet. Auf der der
Seite mit den Zahnringen 2 gegenüberliegenden Seite hat der
Zahnriemen 1 eine Polyurethanschicht 4, die entsprechend der
Zahnteilung mit Nuten 5 versehen ist. Jede der Nuten 5 ist
über einen Durchbruch 6 mit der Führungsfläche 3 verbunden.The
Das Saugrad 7 hat an seinem Umfang einen Mittelsteg 13, an den
jeweils ein Zahnring 9 angrenzt, der sich zur jeweiligen
Stirnfläche des Saugrades 7 hin erstreckt, wobei die Zahnteilung
für ein Kämmen mit den Zähnen der Zahnringe 2 des Zahnriemens
1 ausgelegt ist.The
Bei dem gezeigten Ausführungsbeispiel ist das Umlenkrad 8 mit
Zähnen auf seiner Umfangsfläche versehen, die mit denen der
Zahnringe 2 des Zahnriemens 1 kämmen, wodurch die Geradführung
des Zahnriemens 1 gewährleistet ist, der entweder vom Umlenkrad
8 oder vom Saugrad 7 angetrieben wird, welche an einem
nicht gezeigten Maschinenrahmen gelagert sind. In the exemplary embodiment shown, the
Von der einen Stirnfläche 15 des Saugrads 7 aus erstrecken
sich Anschlußleitungen 14, deren Mündungen auf einem zum
Saugrad 7 konzentrischen Kreis liegen. Die Anschlußleitungen
14 bestehen jeweils aus einer axialen Sackbohrung und einer
radialen Sackbohrung, die ineinander übergehen, wobei die
radiale Sackbohrung in der Umfangsfläche des Mittelsteges 13
dort endet, wo sich jeweils ein Durchbruch 6 des Zahnriemens 1
befindet. Der Mittelsteg 13 des Saugrads 7 hat eine umfangsseitige
Führungsbahn 10, auf der die Führungsfläche 3 des
Zahnriemens 1 aufliegt, wenn die Zähne der Zahnringe 9 des
Saugrads 7 mit den Zähnen der Zahnringe 2 des Zahnriemens 1
kämmen.Extend from one
An der einen Stirnfläche 15 des Saugrads 7 ist auf der dem
Stapel 22 zugewandten Seite ein Vakuumblock 16 angeordnet, der
einen Vakuumkanal 17 aufweist, der mit einer durch einen Pfeil
gekennzeichneten Vakuumquelle 12 taktgesteuert verbindbar ist.
Bei in Richtung des Pfeils 18 von Fig. 1 umlaufendem Saugrad 7
kommen die Anschlußleitungen 14 nacheinander in Kontakt mit
dem Vakuumkanal 17 des Vakuumblocks 16, wodurch jeweils der
oberste Bogen 21 des Stapels 22 zum Zahnriemen 1 anspringt und
von diesem abtransportiert wird.On one
Der Vakuumblock 16 ist in und gegen die Drehrichtung des
Saugrades 7 verschwenkbar, was durch einen Doppelpfeil 19
veranschaulicht ist. Durch entsprechendes Verschwenken des
Vakuumblocks 16 läßt sich die Ansaugstelle 24 für den jeweils
obersten Bogen 21 des Stapels 22 vor- oder nachstellen.The
In Laufrichtung des Zahnriemens 1 ist dem Saugrad 7 unmittelbar
ein Führungsblock 11 mit einer Führungsfläche 23 nachgeordnet.
Der Führungsblock 11 ist so nahe wie möglich am
Saugrad 7 angeordnet, so daß sich die vom Vakuum bedingte, auf
den Bogen 21 wirkende Ansaugkraft zwischen der Ansaugstelle 24
von Fig. 1 bis zur Führungsfläche 23 des Führungsblocks nur
soweit verringert, daß der Abtransport des Bogens 21 längs des
Führungsblocks 11 gewährleistet bleibt, dessen Führungsfläche
23 den bzw. die Durchbrüche 6 verschließt und somit das Restvakuum
in den Nuten 5 aufrechterhält. Dieses Restvakuum ist
etwa 1/6 des Vakuums an der Ansaugstelle 24, so daß ein seitliches
Ausrichten des Bogens 21 an einem Lineal oder dergleichen
durch Verschieben an der Führungsfläche 23 des Führungsblocks
11 möglich ist, ohne daß die für den Transport erforderliche
Haftkraft verlorengeht.In the running direction of the
Beim taktgesteuerten Anlegen eines Vakuums von der Vakuumquelle
12 über den Vakuumkanal 16 und die damit in Verbindung
stehende Anschlußleitung 14 wird dieses über den Durchbruch 6
aufgrund der Verzahnungen der Zahnringe 9 und 2 phasenrichtig
auf die Nuten 5 übertragen, wodurch der oben liegende Bogen 21
des Stapels 22 an den Zahnriemen 1 anspringt und längs des
Führungsblocks 11 gehalten wird. Die Taktsteuerung erfolgt so,
daß abhängig von der gewünschten Bogenfolge die entsprechende
Anschlußleitung 14 mit Vakuum beaufschlagt wird, beispielsweise
jede, jede zweite, jede dritte Anschlußleitung 14, usw.When applying a vacuum from the
Claims (3)
- Device for removing sheets (21) from a stack (22) and for transporting the sheets (21) away from the stack (22)characterised inwith a toothed belt (1), which is guided continuously in tooth engagement around at least one deflector wheel (8) and a suction wheel (7) and which comprises apertures (6) disposed at equal spacings,with a plurality of connection lines (14), which are formed in the suction wheel (7) and one mouth of which in each case lies at a front face (15) of the suction wheel (7) on a circle concentric with the suction wheel (7) and the other mouth of which is in each case provided at the circumferential surface of the suction wheel (7) at an angular spacing for alignment with the apertures (6) in the toothed belt (1), andwith a vacuum block (16), which can be connected to a vacuum source (12) and comprises a vacuum channel (17), with which one front face (15) of the suction wheel is associated such that it comes into vacuum contact with the connection line (14) when the suction wheel (7) rotates,that two toothed rings (9) are provided at the circumference of the toothed wheel (7) for the tooth engagement between the toothed belt (1) and the toothed wheel (7), each of which rings extends from one front side to a central web (13), which forms a circumferential guideway (10) with the other mouths of the connection lines (14),that the teeth of the toothed belt (1) are only provided laterally in the region of the toothed rings (9) of the suction wheel (7) in the form of two toothed rings (2), and a guide face (3), which is formed between them, comes into contact with the guideway (10) of the suction wheel (7), wherein the apertures (6) and the other mouths of the connection lines (14) are aligned,that the apertures (6) lead into grooves (5), which are formed in accordance with the tooth pitch in a layer (4) of a friction-resistant material disposed on the side of the toothed belt (1) lying opposite its side comprising the toothed rings (2), andthat a guide block (11) is disposed directly after the suction wheel (7) in the running direction of the toothed belt, which block comprises a guideway (23) for contact with the guide face (3) of the toothed belt (1).
- Device according to claim 1, characterised in that the deflector wheel (8) and the guide block (11) are disposed on a plate which is disposed such that it can pivot about the suction wheel axis.
- Device according to claim 1 or 2, characterised in that the friction-resistant material of the layer (4) is polyurethane or rubber.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1996148742 DE19648742C2 (en) | 1996-11-25 | 1996-11-25 | Device for removing sheets from a stack and for transporting the sheets away from the stack |
| DE19648742 | 1996-11-25 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0844203A2 EP0844203A2 (en) | 1998-05-27 |
| EP0844203A3 EP0844203A3 (en) | 1998-12-23 |
| EP0844203B1 true EP0844203B1 (en) | 2000-08-02 |
Family
ID=7812686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19970117801 Expired - Lifetime EP0844203B1 (en) | 1996-11-25 | 1997-10-14 | Device for removing sheets from a pile and for transporting the sheets away from the pile |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0844203B1 (en) |
| DE (1) | DE19648742C2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106976748A (en) * | 2017-05-24 | 2017-07-25 | 北塘区军之印纸品加工厂 | A kind of paper product processes paper feeder |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8905662B2 (en) | 2011-08-16 | 2014-12-09 | Xerox Corporation | Method for acquiring and transporting multiple-item sets using a vacuum system |
| DE102012016831A1 (en) | 2011-09-22 | 2013-03-28 | Heidelberger Druckmaschinen Ag | Sheet feeder for use in sheet folding machine for separating sheets from sheet stack, has lifting sucker movable such that lifting cycle is shortly executed before suction cycle of suction wheel |
| DE102011120476A1 (en) | 2011-12-08 | 2013-06-13 | Heidelberger Druckmaschinen Aktiengesellschaft | Unround suction wheel |
| DE102011120475A1 (en) | 2011-12-08 | 2013-06-13 | Heidelberger Druckmaschinen Aktiengesellschaft | Sheet feeder with two suction wheels |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2852255A (en) * | 1953-05-22 | 1958-09-16 | E G Staude Mfg Company Inc | Timed bottom feeder |
| JPS5440825B2 (en) * | 1974-05-04 | 1979-12-05 | ||
| DE3410026C1 (en) * | 1984-03-19 | 1990-01-04 | Maschinenbau Oppenweiler Binder GmbH & Co, 7155 Oppenweiler | Device for removing sheets from a stack and for transporting the sheets away from the stack |
| SE449856B (en) * | 1985-12-20 | 1987-05-25 | Svecia Antiqua Sa | DEVICE FOR Separating and forwarding individual sheets from a stack of sheets |
| DE8706576U1 (en) * | 1987-05-07 | 1988-01-21 | Maschinenbau Oppenweiler Binder GmbH & Co, 7155 Oppenweiler | Device for removing sheets from a stack and for transporting the sheet away from the stack |
-
1996
- 1996-11-25 DE DE1996148742 patent/DE19648742C2/en not_active Expired - Fee Related
-
1997
- 1997-10-14 EP EP19970117801 patent/EP0844203B1/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106976748A (en) * | 2017-05-24 | 2017-07-25 | 北塘区军之印纸品加工厂 | A kind of paper product processes paper feeder |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19648742C2 (en) | 1999-06-24 |
| EP0844203A3 (en) | 1998-12-23 |
| EP0844203A2 (en) | 1998-05-27 |
| DE19648742A1 (en) | 1998-05-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE3608193C2 (en) | ||
| EP1901979A2 (en) | Directional-change roller conveyor installation | |
| DE3805520A1 (en) | LEAF REMOVAL DEVICE | |
| EP1133438B1 (en) | Belt conveyor | |
| DE3148176C2 (en) | Device for transporting goods to be conveyed | |
| DE4402560C2 (en) | Device for turning workpieces lying flat and moving forward | |
| DE1004539B (en) | Method and device for aligning and lining up objects | |
| DE3523901A1 (en) | GLASS PANEL GRINDING MACHINE | |
| EP0844203B1 (en) | Device for removing sheets from a pile and for transporting the sheets away from the pile | |
| DE3209409C2 (en) | ||
| DE10023151A1 (en) | Belt system for transport and/or turning of sheet material comprises belt direction changing pulleys with guide surfaces of which one is electrically conductive | |
| DE2848817C2 (en) | Conveyor device for conveying rod-shaped objects in the tobacco processing industry | |
| DE2730109C2 (en) | Ascending conveyor | |
| DE2232610C2 (en) | Chain device to a conveyor system for paper processing companies | |
| DE2909160A1 (en) | BELT CONVEYOR | |
| EP0770571A2 (en) | Device for transient guiding of successive sheets | |
| DE4132246A1 (en) | Container with endless draw and rollers - has deflector in frame in gap between wheel and belt allowing belt to slide along or against it | |
| EP1247775B1 (en) | Folding apparatus for printed sheets | |
| CH673452A5 (en) | ||
| WO2011113076A2 (en) | Belt conveyor and introduction/discharge device | |
| DE3836604C2 (en) | ||
| EP1473257A2 (en) | Device and system for conveying articles on two adjacent roller conveyors | |
| DE19729088B4 (en) | Sheet conveying device in off or investors of printing presses | |
| DE3530781A1 (en) | Machine for the welding of longitudinal edges of rounded can blanks | |
| EP0824083B1 (en) | Device for removing sheets from a pile and for transporting the sheets away from the pile |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): FR GB IT |
|
| AX | Request for extension of the european patent |
Free format text: AL;LT;LV;RO;SI |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: MASCHINENBAU OPPENWEILER BINDER GMBH & CO. |
|
| PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
| AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
| AX | Request for extension of the european patent |
Free format text: AL;LT;LV;RO;SI |
|
| 17P | Request for examination filed |
Effective date: 19990223 |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| 17Q | First examination report despatched |
Effective date: 19990625 |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| AKX | Designation fees paid |
Free format text: FR GB IT |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: MASCHINENBAU OPPENWEILER BINDER GMBH & CO. |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: 8566 |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): FR GB IT |
|
| ET | Fr: translation filed | ||
| ITF | It: translation for a ep patent filed |
Owner name: BUGNION S.P.A. |
|
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20001025 |
|
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed | ||
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20021017 Year of fee payment: 6 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040630 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20101025 Year of fee payment: 14 Ref country code: IT Payment date: 20101022 Year of fee payment: 14 |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20121014 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20121014 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20121014 |