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EP0392454A2 - Sheet feeder - Google Patents

Sheet feeder Download PDF

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Publication number
EP0392454A2
EP0392454A2 EP90106839A EP90106839A EP0392454A2 EP 0392454 A2 EP0392454 A2 EP 0392454A2 EP 90106839 A EP90106839 A EP 90106839A EP 90106839 A EP90106839 A EP 90106839A EP 0392454 A2 EP0392454 A2 EP 0392454A2
Authority
EP
European Patent Office
Prior art keywords
suction
vacuum
application device
nozzle
vacuum cleaner
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP90106839A
Other languages
German (de)
French (fr)
Other versions
EP0392454B1 (en
EP0392454A3 (en
Inventor
Rudolf Liepert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Georg Spiess GmbH
Original Assignee
Georg Spiess GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Georg Spiess GmbH filed Critical Georg Spiess GmbH
Priority to AT90106839T priority Critical patent/ATE100061T1/en
Publication of EP0392454A2 publication Critical patent/EP0392454A2/en
Publication of EP0392454A3 publication Critical patent/EP0392454A3/en
Application granted granted Critical
Publication of EP0392454B1 publication Critical patent/EP0392454B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65H3/0808—Suction grippers
    • B65H3/0883—Construction of suction grippers or their holding devices

Definitions

  • the invention relates to a feeder device, in particular a sheet feeder, with a suction device arranged above a substrate stack, which contains at least one telescopic lifting device, with a suction plate covered under the action of vacuum applied to the suction plate against a restoring force, preferably arranged up and down, with a lifting suction device and has a transport device containing at least one reciprocable drag suction device, which takes over the substrate raised by the separating device.
  • the suction devices usually arranged in the area of the rear edge of the stack can only remove the uppermost sheet or the like from the stack when the drag suction devices have brought the sheet or the like previously taken over outside the effective range of the suction devices.
  • the result of this is that the retracted part of the lifting suction device must be kept in the retracted state for a certain period of time after the sheet has been handed over. Since the vacuum present on the suction plate of the suction cups must be eliminated when a sheet is transferred, the extendable part of the suction cups must be held in the retracted position against the force acting in the extension direction. So far, mechanical pawls have been used, which can be triggered by means of a trigger device fixed in the machine frame.
  • the holding nozzle and the contact surface are connected to, or integrated into, the respectively assigned suction cups, these elements are automatically also adjusted when the suction cups are adjusted in height, so that any additional adjustment effort is eliminated.
  • Another advantage The measures according to the invention can be seen in the fact that they work practically without wear. In addition, short response times advantageously result.
  • the holding nozzle and the associated contact surface practically form a mechanical stop, so that an additional stroke limitation can also be omitted.
  • At least one vacuum cleaner can advantageously be provided with a starting element, by means of which a valve provided with an actuating tappet in the vacuum line leading to the holding nozzle or to the holding nozzles can be actuated.
  • This measure advantageously ensures direct control of the vacuum line by means of a vacuum cleaner and thus results in a very robust and sensible arrangement.
  • the sheet feeder on which FIG. 1 is based contains a stacking table 2 accommodated on lifting chains 1 for receiving a sheet stack 3 and a suction head 4 which overlaps the sheet stack 3 and which is provided with lifting suction devices 5 forming a sheet separating device and drag suction devices 6 forming a sheet transport device.
  • the lifting suction devices 5 and drag suction devices 6 are received on assigned / cross members of the suction head 4. This, in turn, is fastened to a rail 7 running in the machine longitudinal direction and is adjustable along this in accordance with the sheet format. To adjust the suction head height to the height of the respective sheet stack, the rail 7 is arranged adjustable in height.
  • pulling rollers 8 are provided, which take over the sheet transported to the front by the suction devices 6 and feed it to a feed table 10 provided with belts 9.
  • the special structure and the mode of operation of a sheet feeder of the type present here are known per se and therefore require no further explanation.
  • the suction cups 5 each consist, as can be seen from FIG. 2, of a suction tube 12 carrying a suction plate 11, which is attached to a pin 13 of an associated bearing body 14, which is received on a pipe 16 connected to a vacuum line 15 leading to a vacuum source .
  • the bearing body 14 is provided with a bore penetrating its pin 13 into which the tube 16 is welded. This is the a cylinder space 17 for the interior of the suction tube 12 forming the pin 13, from which the suction nozzles 18 on the plate side, are connected to the vacuum line 15.
  • a spiral compression spring 19 is inserted into the cylinder space 17, under the action of which the suction pipe 12 can be extended downward.
  • the bearing body 14 is provided with claws 22 projecting downward from a flange 20 delimiting its pin 13 upwards and engaging under a flange 21 provided at the upper end of the suction pipe 12.
  • the tube 16 of the suction cups 5 is arranged approximately vertically and is mounted so that it can be moved up and down by means of associated bearing blocks 23 attached to the suction head.
  • the tubes 16 of the side-by-side suction cups are, as already mentioned, received on a common cross member 24, on which, in order to accomplish a rising and falling working stroke of the suction cups, a swivel lever 25 engages, which can be actuated by means of an associated control disk 26, which operates in time with the Sheet feeder is driven.
  • the bearing block 27 of the swivel lever 25 can simply be adjusted, as indicated in FIG. 2 by a double arrow.
  • the task of the suction cups 5, as can be seen in FIG. 2, is to lift the top sheet 28 from the sheet stack 3, ie to separate it from the sheet stack 3.
  • the sheet lifted from the sheet stack 3 by the lifting suction devices 5 is taken over by the drag suction devices 6 and transported to the front, ie. h brought into the effective range of the drawing rollers 8, as indicated in FIG. 2 with the aid of the bow 29.
  • the vacuum present at the suction plate 11 of the suction lifter 5 is switched off to the drag vacuum cleaner 6.
  • the suction pipes 12 are initially as long as the sheet is handed over held in their retracted position until the sheet 29 taken over by the drag vacs 6 has been brought with its rear edge outside the effective range of the vacuum lifters 6.
  • the flange 21 of the suction pipe 12 is provided with a widening forming a radially projecting flag 30, the flank of which is turned upward and designed as a flat contact surface 31.
  • the intake pipe-side lug 30 is overlapped by a radially projecting widening of the flange 20 of the bearing body 14 that supports the claws 22.
  • This widening 32 carries a holding nozzle 33 which is connected to a vacuum source by means of a movable vacuum line 34.
  • the widening 32 can simply be provided with a through-bore parallel to the suction axis, the lower outlet cross section of which forms the holding nozzle 33 and can be covered by the contact surface 31.
  • the suction pipe 12 When a bend 28 is received, the suction pipe 12 is brought into the upwardly retracted position as a result of vacuum being applied to the vacuum line 15.
  • the entry movement is limited by the fact that the contact surface 31 of the intake pipe-side lug 30 runs onto the opposite contact surface of the bearing body-side projection 32, which already covers the holding nozzle 33.
  • a suction force is exerted on the contact surface 31 and accordingly on the suction pipe 12 by means of the holding nozzle 33, which overcomes the downward extension forces in the form of gravity and the force of the extension spring 19 even when the vacuum in the vacuum line 15 is switched off.
  • the holding nozzle 33 and the associated contact surface 31 accordingly form a holding device integrated in the respectively assigned suction device 5 for holding the suction tube 12 in the upwardly retracted position.
  • This integrated holding device is automatically adjusted in the event of a height adjustment of the suction cups 5. Due to its mobility, the vacuum line 34 can easily follow such an adjustment.
  • the up and down control of the leading to the holding nozzle 33, connected to a vacuum source vacuum line 34 is carried out depending on the movement of the vacuum cleaner 6 and that the holding nozzle 34 is acted upon by vacuum as long as the vacuum cleaner 6 is not yet far enough removed from the suction cups 5 to the front.
  • a control valve 35 is provided in the vacuum line 34, which is opened before the drag suction devices 6 reach their rear end position and which is deactivated when the drag suction devices 6 have again been moved sufficiently far forward. Since the suction cups 6 are driven in the machine cycle, the actuation of the control valve 35 can be removed from each element driven in the machine cycle. In the illustrated embodiment, the Actuation of the control valve 35 directly by a vacuum cleaner 6.
  • a thrust plate 36 for this purpose, as can also be seen in FIG. 2, it is provided with a thrust plate 36, by means of which a tappet 37 of the control valve 35 can be actuated.
  • the thrust plate 36 is provided with a start-up phase, which results in a soft actuation.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Seal Device For Vehicle (AREA)
  • Saccharide Compounds (AREA)

Abstract

In a feeding device, such as a sheet feeder comprising a suction means arranged above a substrate stack (3), which has a separating means including at least one telescopically formed lifting suction device (5), preferably arranged so as to be moveable up and down, which, when the suction plate (11) is covered by a sheet, can be retracted, counter to a restoring force, under the action of a vacuum which is present on the suction plate (11), and has a transporting means including at least one dragging suction device (6) which can be moved back and forth, which transporting means takes the substrate raised by the separating means from the latter, a trouble-free operation and a high degree of user friendliness are achieved if there are provided in the region of mutually overlapping surfaces of the telescopically engaging parts (12, 14) of each lifting suction device (5) on the one hand at least one holding nozzle (33) to which a vacuum can be applied independently of the suction plate (11) it being possible to increase and cut back this vacuum as a function of the movement of the dragging suction device, and, on the other hand, a contact surface (31) assigned to said nozzle and lying against the latter in the retracted state. <IMAGE>

Description

Die Erfindung betrifft eine Anlegevorrichtung, insbe­sondere einen Bogenanleger, mit einer oberhalb eines Substratstapels angeordneten Saugeinrichtung, die eine wenigstens einen teleskopartig ausgebildeten, bei ab­gedecktem Saugteller unter der Wirkung von am Saugteller anstehendem Vakuum entgegen einer Rückstellkraft ein­fahrbaren, vorzugsweise auf- und abbewegbar angeordne­ten Hubsauger enthaltende Trenneinrichtung und eine we­nigstens einen hin- und herbewegbaren Schleppsauger enthaltende Transporteinrichtung aufweist, welche das von der Trenneinrichtung angehobene Substrat von dieser übernimmt.The invention relates to a feeder device, in particular a sheet feeder, with a suction device arranged above a substrate stack, which contains at least one telescopic lifting device, with a suction plate covered under the action of vacuum applied to the suction plate against a restoring force, preferably arranged up and down, with a lifting suction device and has a transport device containing at least one reciprocable drag suction device, which takes over the substrate raised by the separating device.

Bei einem Bogenanleger dieser Art können die in der Re­gel im Bereich der Stapelhinterkante angeordneten Hub­sauger den jeweils obersten Bogen oder dergleichen erst dann vom Stapel abnehmen, wenn die Schleppsauger den vorher übernommenen Bogen oder dergleichen außerhalb des Wirkbereichs der Hubsauger gebracht haben. Dies hat zur Folge, daß der eingefahrene Teil der Hubsauger nach der Bogenübergabe noch eine gewisse Zeitspanne im eingefahrenen Zustand gehalten werden muß. Da bei der Übergabe eines Bogens das am Saugteller der Hubsauger anstehende Vakuum entfallen muß, muß der ausfahrbare Teil der Hubsauger entgegen der in Ausfahrrichtung wir­kenden Kraft in der eingefahrenen Stellung gehalten werden. Hierzu finden bisher mechanische Klinken Ver­wendung, die mittels einer im Maschinengestell fixier­ten Auslöseeinrichtung auslösbar sind. Nachteilig hier­bei ist nicht nur der Verschleiß der mechanischen Klin­ken, sondern auch der hohe Einstellungsaufwand. In die­sem Zusammenhang ist nämlich davon auszugehen, daß die Hubsauger höhenverstellbar sind und daß im Falle einer Höhenverstellung der Hubsauger die gestellseitig fixier­te Auslöseeinrichtung ebenfalls verstellt werden muß, was einen hohen Aufwand bedeutet. Die bekannten Anleger er­weisen sich demnach als nicht einfach und bedienun-gs­freundlich genug.In the case of a sheet feeder of this type, the suction devices usually arranged in the area of the rear edge of the stack can only remove the uppermost sheet or the like from the stack when the drag suction devices have brought the sheet or the like previously taken over outside the effective range of the suction devices. The result of this is that the retracted part of the lifting suction device must be kept in the retracted state for a certain period of time after the sheet has been handed over. Since the vacuum present on the suction plate of the suction cups must be eliminated when a sheet is transferred, the extendable part of the suction cups must be held in the retracted position against the force acting in the extension direction. So far, mechanical pawls have been used, which can be triggered by means of a trigger device fixed in the machine frame. The disadvantage here is not only the wear of the mechanical pawls, but also the high adjustment effort. In this context, it can be assumed that the suction cups are height-adjustable and that in the case of a height adjustment of the suction cups, the triggering device fixed on the frame must also be adjusted, which means a great deal of effort. The well-known investors therefore prove to be not easy and user-friendly enough.

Hiervon ausgehend ist es die Aufgabe der vorliegenden Erfindung, eine Anlegevorrichtung eingangs erwähnter Art mit einfachen und kostengünstigen Mitteln so zu verbes­sern, daß die Hubsauger auch ohne die Verwendung mecha­nischer Klinken im eingefahrenen Zustand gehalten werden können.Proceeding from this, it is the object of the present invention to improve an application device of the type mentioned at the outset with simple and inexpensive means so that the lifting suction devices can be kept in the retracted state even without the use of mechanical pawls.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß bei einer Anlegevorrichtung gattungsgemäßer Art im Be­reich einander übergreifender Flächen der teleskopartig ineinander eingreifenden Teile jedes Hubsaugers einer­seits wenigstens eine unabhängig vom Saugteller mit in Abhängigkeit von der Schleppsaugerbewegung auf- und absteuerbarem Vakuum beaufschlagbare Haltedüse und an­dererseits eine dieser zugeordnete, im eingefahrenen Zustand hieran anliegende Anlagefläche vorgesehen sind.This object is achieved according to the invention in that, in the case of an application device of the generic type, in the region of overlapping surfaces of the telescopically engaging parts of each vacuum cleaner, on the one hand at least one holding nozzle which can be acted upon and controlled depending on the vacuum cleaner movement and, on the other hand, an associated holding nozzle in the retracted state adjacent contact surface are provided.

Diese Maßnahmen stellen sicher, daß der ein- und ausfahr­bare Teil der Hubsauger unabhängig von der Vakuumbeauf­schlagung des jeweils zugehörigen Saugtellers mittels eines an der Haltedüse anstehenden Vakuums in der ein­gefahrenen Stellung gehalten werden kann und erst beim Abschalten dieses, an der Haltedüse anstehenden Vakuums losgelassen wird. Da das an der Haltedüse anstehende Va­kuum in Abhängigkeit von der Bewegung der Schleppsauger und ohne Rücksicht auf das am Saugteller der Hubsauger anstehende Vakuum auf- und abgesteuert werden kann, ist es hierbei in vorteilhafter Weise möglich, die Hubsauger so lange in der eingefahrenen Stellung zu halten, bis die Schleppsauger den vorher übernommenen Bogen etc. aus dem Wirkbereich der Hubsauger geschleppt haben, ohne daß die Bogenübergabe hierdurch beeinträchtigt würde und ohne daß mechanische Klinken benötigt würden. Da die Halte­düse und die Anlagefläche mit dem jeweils zugeordneten Hubsauger verbunden bzw. in diesen integriert sind, wer­den diese Elemente bei einer Höhenverstellung der Hub­sauger automatisch mitverstellt, so daß jeder zusätzli­che Einstellungsaufwand entfällt. Ein weiterer Vorteil der erfindungsgemäßen Maßnahmen ist darin zu sehen, daß diese praktisch verschleißfrei arbeiten. Außerdem erge­ben sich in vorteilhafter Weise kurze Ansprechzeiten. Hinzu kommt, daß die Haltedüse und die zugeordnete An­lagefläche praktisch einen mechanischen Anschlag bilden, so daß auch eine zusätzliche Hubbegrenzung entfallen kann.These measures ensure that the retractable and extendable part of the suction cups can be held in the retracted position by means of a vacuum applied to the holding nozzle and can only be released when the vacuum applied to the holding nozzle is switched off, regardless of the vacuum applied to the associated suction plate. Since the vacuum applied to the holding nozzle can be opened and closed depending on the movement of the suction cups and regardless of the vacuum applied to the suction cup of the suction cups, it is advantageously possible to hold the suction cups in the retracted position for so long until the suction cups have dragged the previously adopted sheet etc. out of the effective range of the suction cups, without the sheet transfer thereby being impaired and without mechanical pawls being required. Since the holding nozzle and the contact surface are connected to, or integrated into, the respectively assigned suction cups, these elements are automatically also adjusted when the suction cups are adjusted in height, so that any additional adjustment effort is eliminated. Another advantage The measures according to the invention can be seen in the fact that they work practically without wear. In addition, short response times advantageously result. In addition, the holding nozzle and the associated contact surface practically form a mechanical stop, so that an additional stroke limitation can also be omitted.

Vorteilhaft kann wenigstens ein Schleppsauger mit einem Anlauforgan versehen sein, mittels dessen ein in der zur Haltedüse bzw. zu den Haltedüsen führenden Vakuumlei­tung angeordnete, mit einem Betätigungsstößel versehenes Ventil betätigbar ist. Diese Maßnahme gewährleistet in vorteilhafter Weise eine direkte Steuerung der Vakuum­leitung durch einen Schleppsauger und ergibt somit eine sehr robuste und sinnfällige Anordnung.At least one vacuum cleaner can advantageously be provided with a starting element, by means of which a valve provided with an actuating tappet in the vacuum line leading to the holding nozzle or to the holding nozzles can be actuated. This measure advantageously ensures direct control of the vacuum line by means of a vacuum cleaner and thus results in a very robust and sensible arrangement.

Weitere vorteilhafte Ausgestaltungen und zweckmäßige Fortbildungen der übergeordneten Maßnahmen sind in den restlichen Unteransprüchen angegeben.Further advantageous refinements and expedient further training of the superordinate measures are specified in the remaining subclaims.

Nachstehend wird ein Ausführungsbeispiel der Erfindung anhand der Zeichnung näher erläutert.An exemplary embodiment of the invention is explained in more detail below with reference to the drawing.

Hierbei zeigen:

  • Figur 1 eine schematische Draufsicht auf einen erfindungsgemäßen Bogenanleger und
  • Figur 2 eine vergrößerte, schematische Seiten­ansicht des Saugkopfes des erfindungs­gemäßen Bogenanlegers.
Here show:
  • Figure 1 is a schematic plan view of a sheet feeder according to the invention and
  • Figure 2 is an enlarged, schematic side view of the suction head of the sheet feeder according to the invention.

Der der Figur 1 zugrundeliegende Bogenanleger enthält einen an Hubketten 1 aufgenommenen Stapeltisch 2 zur Aufnahme eines Bogenstapels 3 und einen den Bogensta­pel 3 übergreifenden Saugkopf 4, der mit eine Bogen­trenneinrichtung bildenden Hubsaugern 5 und eine Bogen­transporteinrichtung bildenden Schleppsaugern 6 verse­hen ist. Die Hubsauger 5 und Schleppsauger 6 sind an zugeordneten/Querträgern des Saugkopfes 4 aufgenommen. Dieser ist seinerseits an einer in Maschinenlängsrich­tung verlaufenden Schiene 7 befestigt und entlang die­ser entsprechend dem Bogenformat verstellbar. Zur Ein­stellung der Saugkopfhöhe auf die Höhe des jeweiligen Bogenstapels ist die Schiene 7 in der Höhe verstellbar angeordnet.The sheet feeder on which FIG. 1 is based contains a stacking table 2 accommodated on lifting chains 1 for receiving a sheet stack 3 and a suction head 4 which overlaps the sheet stack 3 and which is provided with lifting suction devices 5 forming a sheet separating device and drag suction devices 6 forming a sheet transport device. The lifting suction devices 5 and drag suction devices 6 are received on assigned / cross members of the suction head 4. This, in turn, is fastened to a rail 7 running in the machine longitudinal direction and is adjustable along this in accordance with the sheet format. To adjust the suction head height to the height of the respective sheet stack, the rail 7 is arranged adjustable in height.

Im Bereich der Stapelvorderkante sind Zugwalzen 8 vorge­sehen, welche den von den Schleppsaugern 6 jeweils nach vorne transportierten Bogen übernehmen und einem mit Bändern 9 versehenen Anlegetisch 10 zuführen. Der spe­zielle Aufbau und die Funktionsweise eines Bogenanlegers hier vorliegender Art sind an sich bekannt und bedürfen daher keiner weiteren Erläuterung mehr.In the area of the front edge of the stack, pulling rollers 8 are provided, which take over the sheet transported to the front by the suction devices 6 and feed it to a feed table 10 provided with belts 9. The special structure and the mode of operation of a sheet feeder of the type present here are known per se and therefore require no further explanation.

Die Hubsauger 5 bestehen jeweils, wie aus Figur 2 ersicht­lich ist, aus einem einen Saugteller 11 tragenden Saug­rohr 12, das auf einen Zapfen 13 eines zugeordneten La­gerkörpers 14 aufgesteckt ist, der an einem an eine zu einer Vakuumquelle führende Vakuumleitung 15 angeschlos­senen Rohr 16 aufgenommen ist. Im dargestellten Ausfüh­rungsbeispiel ist der Lagerkörper 14 hierzu mit einer seinen Zapfen 13 durchsetzenden Bohrung versehen, in wel­che das Rohr 16 eingeschweißt ist. Hierdurch ist der einen Zylinderraum 17 für den Zapfen 13 bildende Innen­raum des Saugrohrs 12, von dem tellerseitige Saugdüsen 18 abgehen, mit der Vakuumleitung 15 verbunden. In den Zylinderraum 17 ist eine Spiraldruckfeder 19 eingeelegt, unter deren Wirkung das Saugrohr 12 nach unten ausfahr­bar ist. Zur Begrenzung dieses Ausfahrhubs ist der La­gerkörper 14 mit von einem seinen Zapfen 13 nach oben begrenzenden Flansch 20 nach unten abstehenden, einen am oberen Ende des Saugrohrs 12 vorgesehenen Flansch 21 un­tergreifenden Klauen 22 versehen.The suction cups 5 each consist, as can be seen from FIG. 2, of a suction tube 12 carrying a suction plate 11, which is attached to a pin 13 of an associated bearing body 14, which is received on a pipe 16 connected to a vacuum line 15 leading to a vacuum source . In the exemplary embodiment shown, the bearing body 14 is provided with a bore penetrating its pin 13 into which the tube 16 is welded. This is the a cylinder space 17 for the interior of the suction tube 12 forming the pin 13, from which the suction nozzles 18 on the plate side, are connected to the vacuum line 15. A spiral compression spring 19 is inserted into the cylinder space 17, under the action of which the suction pipe 12 can be extended downward. To limit this extension stroke, the bearing body 14 is provided with claws 22 projecting downward from a flange 20 delimiting its pin 13 upwards and engaging under a flange 21 provided at the upper end of the suction pipe 12.

Das Rohr 16 der Hubsauger 5 ist etwa vertikal angeord­net und mittels zugeordneter, saugkopffester Lagerböcke 23 auf- und abbewegbar gelagert. Die Rohre 16 der neben­einander angeordneten Hubsauger sind, wie schon erwähnt, auf einem gemeinsamen Querträger 24 aufgenommen, an dem zur Bewerkstelligung eines auf- und abgehenden Arbeits­hubs der Hubsauger ein Schwenkhebel 25 angreift, der mittels einer zugeordneten Steuerscheibe 26 betätigbar ist, die im Takt des Bogenanlegers angetrieben wird. Zur Feineinstellung der Höhe der Hubsauger 5 kann einfach der Lagerbock 27 des Schwenkhebels 25 verstellt werden, wie in Figur 2 durch einen Doppelpfeil angedeutet ist.The tube 16 of the suction cups 5 is arranged approximately vertically and is mounted so that it can be moved up and down by means of associated bearing blocks 23 attached to the suction head. The tubes 16 of the side-by-side suction cups are, as already mentioned, received on a common cross member 24, on which, in order to accomplish a rising and falling working stroke of the suction cups, a swivel lever 25 engages, which can be actuated by means of an associated control disk 26, which operates in time with the Sheet feeder is driven. For fine adjustment of the height of the suction cups 5, the bearing block 27 of the swivel lever 25 can simply be adjusted, as indicated in FIG. 2 by a double arrow.

Die Aufgabe der Hubsauger 5 ist es, wie Figur 2 weiter erkennen läßt, den jeweils obersten Bogen 28 vom Bogen­stapel 3 abzuheben, d. h. vom Bogenstapel 3 zu trennen. Der durch die Hubsauger 5 vom Bogenstapel 3 jeweils ab­gehobene Bogen wird von den Schleppsaugern 6 übernommen und nach vorne abtransportiert, d. h in den Wirkbereich der Zugwalzen 8 gebracht, wie in Figur 2 anhand des Bo­gens 29 angedeutet ist. Bei der Übergabe eines Bogens an die Schleppsauger 6 wird das am Saugteller 11 der Hubsauger 5 anstehende Vakuum abgeschaltet. Um jedoch zu verhindern, daß dennoch die Saugrohr 12 unter der Wir­kung ihrer Schwerkraft und der Ausfahrfeder 19 nach un­ten ausgefahren werden, was zu einer Kollsion mit dem an die Schleppsauger 6 übergebenen Bogen führen könnte, werden die Saugrohre 12 im Anschluß an die Bogenüber­gabe zunächst solange in ihrer eingefahrenen Stellung gehalten, bis der von den Schleppsaugern 6 übernommene Bogen 29 mit seiner hinteren Kante außerhalb des Wirk­bereichs der Hubsauger 6 gebracht worden ist.The task of the suction cups 5, as can be seen in FIG. 2, is to lift the top sheet 28 from the sheet stack 3, ie to separate it from the sheet stack 3. The sheet lifted from the sheet stack 3 by the lifting suction devices 5 is taken over by the drag suction devices 6 and transported to the front, ie. h brought into the effective range of the drawing rollers 8, as indicated in FIG. 2 with the aid of the bow 29. When handing over a sheet the vacuum present at the suction plate 11 of the suction lifter 5 is switched off to the drag vacuum cleaner 6. However, in order to prevent the suction pipe 12 from being extended downwards under the action of its gravity and the extension spring 19, which could lead to collision with the sheet passed to the suction cups 6, the suction pipes 12 are initially as long as the sheet is handed over held in their retracted position until the sheet 29 taken over by the drag vacs 6 has been brought with its rear edge outside the effective range of the vacuum lifters 6.

Hierzu ist der Flansch 21 des Saugrohrs 12 mit einer eine radial vorspringende Fahne 30 bildende Verbreite­rung versehen, deren nach oben gewandte Flanke als ebene Anlagefläche 31 ausgebildet ist. Die saugrohrseitige Fahne 30 wird von einer radial vorspringenden Verbreite­rung des die Klauen 22 tragenden Flansches 20 des Lager­körpers 14 übergriffen. Diese Verbreiterung 32 trägt eine Haltedüse 33, die mittels einer beweglichen Vakuum­leitung 34 an eine Vakuumquelle angeschlossen ist. Zur Bildung der Haltedüse 33 kann die Verbreiterung 32 ein­fach mit einer saugerachsparallelen Durchgangsbohrung versehen sein, deren unterer, die Haltedüse 33 bildender Austrittsquerschnitt durch die Anlagefläche 31 abdeckbar ist. Bei der Aufnahme eines Bogens 28 wird das Saugrohr 12 infolge einer Vakuumbeaufschlagung der Vakuumleitung 15 in die nach oben eingefahrene Stellung gebracht. Die Einfahrbewegung wird dabei dadurch begrenzt, daß die An­lagefläche 31 der saugrohrseitigen Fahne 30 auf die ge­genüberliegende Anlagefläche des lagerkörperseitigen Vorsprungs 32 aufläuft, womit die Haltedüse 33 bereits abgedeckt ist. Durch Vakuumbeaufschlagung der Vakuumlei­ tung 34 wird mittels der Haltedüse 33 eine Saugkraft auf die Anlagefläche 31 und dementsprechend auf das Saugrohr 12 ausgeübt, welche auch bei Abschaltung des Vakuums in der Vakuumleitung 15 die nach unten gerichteten Ausfahr­kräfte in Form der Schwerkraft und der Kraft der Aus­fahrfeder 19 überwindet.For this purpose, the flange 21 of the suction pipe 12 is provided with a widening forming a radially projecting flag 30, the flank of which is turned upward and designed as a flat contact surface 31. The intake pipe-side lug 30 is overlapped by a radially projecting widening of the flange 20 of the bearing body 14 that supports the claws 22. This widening 32 carries a holding nozzle 33 which is connected to a vacuum source by means of a movable vacuum line 34. To form the holding nozzle 33, the widening 32 can simply be provided with a through-bore parallel to the suction axis, the lower outlet cross section of which forms the holding nozzle 33 and can be covered by the contact surface 31. When a bend 28 is received, the suction pipe 12 is brought into the upwardly retracted position as a result of vacuum being applied to the vacuum line 15. The entry movement is limited by the fact that the contact surface 31 of the intake pipe-side lug 30 runs onto the opposite contact surface of the bearing body-side projection 32, which already covers the holding nozzle 33. By applying vacuum to the vacuum line device 34, a suction force is exerted on the contact surface 31 and accordingly on the suction pipe 12 by means of the holding nozzle 33, which overcomes the downward extension forces in the form of gravity and the force of the extension spring 19 even when the vacuum in the vacuum line 15 is switched off.

Die Haltedüse 33 und die zugeordnete Anlagefläche 31 bilden dementsprechend eine in den jeweils zugeordneten Hubsauger 5 integrierte Halteeinrichtung zum Zurückhal­tendes Saugrohrs 12 in der nach oben eingefahrenen Stel­lung. Diese integrierte Halteeinrichtung wird im Falle einer Höhenverstellung der Hubsauger 5 automatisch mit­verstellt. Die Vakuumleitung 34 kann aufgrund ihrer Be­weglichkeit einer derartigen Verstellung ohne weiteres folgen.The holding nozzle 33 and the associated contact surface 31 accordingly form a holding device integrated in the respectively assigned suction device 5 for holding the suction tube 12 in the upwardly retracted position. This integrated holding device is automatically adjusted in the event of a height adjustment of the suction cups 5. Due to its mobility, the vacuum line 34 can easily follow such an adjustment.

Die Auf- und Absteuerung der zur Haltedüse 33 führenden, an eine Vakuumquelle angeschlossenen Vakuumleitung 34 wird in Abhängigkeit von der Bewegung der Schleppsauger 6 vorgenommen und zwar der Art, daß die Haltedüse 34 mit Vakuum beaufschlagt wird, solange sich die Schleppsauger 6 noch nicht genügend weit von den Hubsaugern 5 nach vorne entfernt haben. Hierzu ist in der Vakuumleitung 34 ein Steuerventil 35 vorgesehen, das aufgesteuert wird, bevor die Schleppsauger 6 ihre hintere Endstellung er­reichen und das abgesteuert wird, wenn die Schleppsauger 6 wieder ausreichend weit nach vorne bewegt worden sind. Da die Schleppsauger 6 im Maschinentakt angetrieben wer­den, kann die Betätigung des Steuerventils 35 von jedem im Maschinentakt angetriebenen Element abgenommen wer­den. Im dargestellten Ausführungsbeispiel erfolgt die Betätigung des Steuerventils 35 direkt durch einen Schleppsauger 6.The up and down control of the leading to the holding nozzle 33, connected to a vacuum source vacuum line 34 is carried out depending on the movement of the vacuum cleaner 6 and that the holding nozzle 34 is acted upon by vacuum as long as the vacuum cleaner 6 is not yet far enough removed from the suction cups 5 to the front. For this purpose, a control valve 35 is provided in the vacuum line 34, which is opened before the drag suction devices 6 reach their rear end position and which is deactivated when the drag suction devices 6 have again been moved sufficiently far forward. Since the suction cups 6 are driven in the machine cycle, the actuation of the control valve 35 can be removed from each element driven in the machine cycle. In the illustrated embodiment, the Actuation of the control valve 35 directly by a vacuum cleaner 6.

Dieser ist hierzu, wie Fig. 2 weiter erkennen läßt, mit einer Anlaufplatte 36 versehen, mittels der ein Stößel 37 des Steuerventils 35 betätigbar ist. Die Anlaufplat­te 36 ist hier mit einer Anlaufphase versehen, was eine weiche Betätigung ergibt.For this purpose, as can also be seen in FIG. 2, it is provided with a thrust plate 36, by means of which a tappet 37 of the control valve 35 can be actuated. The thrust plate 36 is provided with a start-up phase, which results in a soft actuation.

Vorstehend ist zwar ein bevorzugtes Ausführungsbeispiel der Erfindung näher erläutert, ohne daß jedoch hiermit eine Beschränkung verbunden sein soll. Wie bei einem Bo­genanleger erweisen sich die erfindungsgemäßen Maßnahmen auch bei anderen Anlegevorrichtungen, beispielsweise zum Anlegen von Blechen etc. als vorteilhaft.Although a preferred exemplary embodiment of the invention has been explained in more detail above, this is not intended to imply any limitation. As in the case of a sheet feeder, the measures according to the invention also prove to be advantageous in other application devices, for example for applying sheet metal, etc.

Claims (9)

1. Anlegevorrichtung, insbesondere Bogenanleger, mit einer oberhalb eines Substratstapels (3) angeordneten Saugeinrichtung, die eine wenigstens einen teleskop­artig ausgebildeten, bei abgedecktem Saugteller (11) unter der Wirkung von am Saugteller (11) anstehendem Vakuum entgegen einer Rückstellkraft einfahrbaren, vorzugsweise auf- und abbewegbar angeordneten Hubsau­ger (5) enthaltende Trenneinrichtung und eine wenig­stens einen hin- und herbewegbaren Schleppsauger (6) enthaltende Transporteinrichtung aufweist, welche das von der Trenneinrichtung angehobene Substrat von die­ser übernimmt, dadurch gekennzeichnet, daß im Bereich einander übergreifender Flächen der teleskopartig in­einander eingreifenden Teile (12, 14) jedes Hubsau­gers (5) einerseits wenigstens eine unabhängig vom Saugteller (11) mit in Abhängigkeit von der Schlepp­saugerbewegung auf- und absteuerbarem Vakuum beauf­schlagbare Haltedüse (33) und andererseits eine die­ser zugeordnete, im eingefahrenen Zustand hieran an­liegende Anlagefläche (31) vorgesehen sind.1. Application device, in particular sheet feeder, with a suction device arranged above a substrate stack (3), which has at least one telescope-shaped, preferably retractable against a restoring force when the suction plate (11) is covered under the action of vacuum on the suction plate (11). and has a separating device which is arranged so as to be movable and which has a suction device (5) and a transport device which can be moved back and forth and which takes over the substrate raised by the separating device, characterized in that in the region of mutually overlapping surfaces of the telescopically engaging parts (12, 14) of each vacuum cleaner (5) on the one hand at least one holding nozzle (33) which can be acted upon independently of the suction plate (11) with a vacuum which can be opened and closed as a function of the vacuum cleaner movement and, on the other hand, one associated therewith in the retracted state nend contact surface (31) are provided. 2. Anlegevorrichtung nach Anspruch 1 , dadurch gekenn­zeichnet, daß eine der Haltedüse (33) zugeordnete Va­kuumleitung (34) direkt mittels eines Schleppsaugers (6) auf- und absteuerbar ist.2. Application device according to claim 1, characterized in that one of the holding nozzle (33) associated vacuum line (34) can be opened and closed directly by means of a vacuum cleaner (6). 3. Anlegevorrichtung nach Anspruch 2, dadurch gekenn­zeichnet, daß wenigstens ein Schleppsauger (6) mit einem Anlauforgan, vorzugsweise in Form einer mit einer Anlaufphase versehenen Steuerplatte (36), ver­sehen ist, mittels dessen ein in der Vakuumleitung (34) angeordnetes, mit einem Betätigungsstößel (37) versehenes Steuerventil (35) betätigbar ist.3. Application device according to claim 2, characterized in that at least one drag vacuum cleaner (6) is provided with a starting element, preferably in the form of a control plate (36) provided with a starting phase, by means of which a arranged in the vacuum line (34), with a Actuating tappet (37) provided control valve (35) can be actuated. 4. Anlegevorrichtung nach einem der vorhergehenden An­sprüche, dadurch gekennzeichnet, daß die Vakuumlei­tung (34) bei einer rückwärtigen Bewegung der Schlepp­sauger (6) geöffnet und bei einer gegenläufigen, nach vorne gerichteten Bewegung der Schleppsauger (6) ge­schlossen wird.4. Application device according to one of the preceding claims, characterized in that the vacuum line (34) is opened during a rearward movement of the drag vacuum cleaner (6) and is closed with an opposite, forward-directed movement of the drag vacuum cleaner (6). 5. Anlegevorrichtung nach wenigstens einem der vorherge­henden Ansprüche, dadurch gekennzeichnet, daß die An­lagefläche (31) an das Saugrohr (12) angeformt und die Haltedüse (32) im Bereich des Lagerkörpers (14) vorgesehen ist.5. Application device according to at least one of the preceding claims, characterized in that the contact surface (31) is integrally formed on the suction pipe (12) and the holding nozzle (32) is provided in the region of the bearing body (14). 6. Anlegevorrichtung nach Anspruch 5, dadurch gekenn­zeichnet, daß jeder Hubsauger (5) eine vom oberen Rand seines den Saugteller (11) tragenden Saugrohrs (12) abstehende, die Anlagefläche (31) enthaltende Fahne (30) aufweist, über die ein die zugeordnete Saugdüse (33) tragender, an einem stationären Lager­ körper (14) des Hubsaugers (5) befestigter Düsenhal­ter auskragt.6. Application device according to claim 5, characterized in that each lifting suction device (5) has a from the upper edge of its suction plate (11) carrying suction tube (12) projecting, the contact surface (31) containing flag (30), via which a the assigned Suction nozzle (33) carrying, on a stationary bearing body (14) of the suction cup (5) attached nozzle holder protrudes. 7. Anlegevorrichtung nach Anspruch 6, dadurch gekenn­zeichnet, daß die Fahne (30) als Verbreiterung eines oberen Randflansches (21) des Saugrohrs (12) ausge­bildet ist.7. Application device according to claim 6, characterized in that the flag (30) is designed as a widening of an upper edge flange (21) of the suction tube (12). 8. Anlegevorrichtung nach einem der vorhergehenden An­sprüche 6 bis 7, dadurch gekennzeichnet, daß der Dü­senhalter als Verbreiterung (32) eines den Randflansch (21) des Saugrohrs (12) untergreifende Klauen (22) tragenden Randflansches (20) des Lagerkörpers (14) ausgebildet ist.8. Application device according to one of the preceding claims 6 to 7, characterized in that the nozzle holder is formed as a widening (32) of an edge flange (21) of the suction tube (12) engaging claws (22) bearing edge flange (20) of the bearing body (14) is. 9. Anlegevorrichtung nach einem der vorhergehenden An­sprüche, dadurch gekennzeichnet, daß die Haltedüse (33) als an eine vorzugsweise in sich bewegliche Va­kuumleitung (34) angeschlossene, saugerachsparallele Bohrung des zugeordneten Düsenhalters ausgebildet ist.9. Application device according to one of the preceding claims, characterized in that the holding nozzle (33) is designed as a suction-axis-parallel bore of the associated nozzle holder, which is connected to a preferably movable vacuum line (34).
EP90106839A 1989-04-14 1990-04-10 Sheet feeder Expired - Lifetime EP0392454B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90106839T ATE100061T1 (en) 1989-04-14 1990-04-10 DOCKING DEVICE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3912241A DE3912241C1 (en) 1989-04-14 1989-04-14
DE3912241 1989-04-14

Publications (3)

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EP0392454A2 true EP0392454A2 (en) 1990-10-17
EP0392454A3 EP0392454A3 (en) 1991-07-31
EP0392454B1 EP0392454B1 (en) 1994-01-12

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ID=6378654

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EP90106839A Expired - Lifetime EP0392454B1 (en) 1989-04-14 1990-04-10 Sheet feeder

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US (1) US5064184A (en)
EP (1) EP0392454B1 (en)
JP (1) JPH033835A (en)
AT (1) ATE100061T1 (en)
DD (1) DD293562A5 (en)
DE (2) DE3912241C1 (en)

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DE4234184C2 (en) * 1992-10-10 1996-02-01 Heidelberger Druckmasch Ag Lifting suction device for lifting a sheet of paper from the stack and for holding the sheet in the raised position above the stack
DE4234182C2 (en) * 1992-10-10 1996-06-13 Heidelberger Druckmasch Ag Lift suction device for lifting a sheet of paper from the stack and for holding the sheet in the raised position above the stack in a feeder of a paper sheet processing machine
DE4241788C1 (en) * 1992-12-11 1994-02-03 Heidelberger Druckmasch Ag Paper sheet feed mechanism to processing machine - has suction cups thrust permanently downwards onto stack and lifted periodically
DE29510214U1 (en) * 1995-06-23 1995-08-31 Heidelberger Druckmaschinen Ag, 69115 Heidelberg Device for the cyclical lifting and lowering of a lifting suction device in the feeder of a sheet processing machine with means for adjusting the suction height
DE19755521A1 (en) * 1997-12-13 1999-06-17 Koenig & Bauer Ag Bow separator
DE19755520A1 (en) * 1997-12-13 1999-06-17 Koenig & Bauer Ag Bow separator
US20070138733A1 (en) * 2005-12-16 2007-06-21 Chris Gray Pick mechanism
JP5004714B2 (en) 2007-08-09 2012-08-22 株式会社小森コーポレーション Paper feeder for printing press
CN102744217B (en) * 2012-06-29 2014-01-29 黑龙江大学 It is used to unlock the lifting lever mechanism on the sorting machine of ball bearing inner and outer rings
DE102015112625A1 (en) * 2015-07-31 2017-02-16 Hanses Sägewerkstechnik GmbH & Co. KG Method for destacking veneer sheets
CN108529026B (en) * 2018-04-25 2020-05-15 深圳泰明嘉业药业有限公司 Medical hemostatic membrane access arrangement
CN108584172B (en) * 2018-04-25 2020-02-18 河南威浦仕医疗科技有限公司 Hemostatic membrane storage device
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Also Published As

Publication number Publication date
ATE100061T1 (en) 1994-01-15
US5064184A (en) 1991-11-12
DD293562A5 (en) 1991-09-05
DE59004179D1 (en) 1994-02-24
EP0392454B1 (en) 1994-01-12
DE3912241C1 (en) 1990-10-04
EP0392454A3 (en) 1991-07-31
JPH033835A (en) 1991-01-09

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