EP0803457B1 - Device for separating and lifting the uppermost sheet of a sheet stack - Google Patents

Device for separating and lifting the uppermost sheet of a sheet stack Download PDF

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Publication number
EP0803457B1
EP0803457B1 EP97106151A EP97106151A EP0803457B1 EP 0803457 B1 EP0803457 B1 EP 0803457B1 EP 97106151 A EP97106151 A EP 97106151A EP 97106151 A EP97106151 A EP 97106151A EP 0803457 B1 EP0803457 B1 EP 0803457B1
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EP
European Patent Office
Prior art keywords
sheet
stripping element
sheet pile
carrier
feed direction
Prior art date
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Expired - Lifetime
Application number
EP97106151A
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German (de)
French (fr)
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EP0803457A2 (en
EP0803457A3 (en
Inventor
Peter Eilitz
Herbert Herrmann
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.)
Manroland AG
Original Assignee
MAN Roland Druckmaschinen AG
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Publication date
Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0803457A2 publication Critical patent/EP0803457A2/en
Publication of EP0803457A3 publication Critical patent/EP0803457A3/en
Application granted granted Critical
Publication of EP0803457B1 publication Critical patent/EP0803457B1/en
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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
    • B65H3/46—Supplementary devices or measures to assist separation or prevent double feed
    • B65H3/56—Elements, e.g. scrapers, fingers, needles, brushes, acting on separated article or on edge of the pile

Definitions

  • the invention relates to a device for separating and lifting of the top sheet, especially the top sheet, of one Sheet stack, with a sheet detection device for cyclical detection and Lift the top sheet, as well as one on the back edge of the one certain amount of raised top arc Scraper device which has a scraper element with a sliding ramp, which by the trailing edge of the top sheet when lifting it against a spring force from a near the sheet stack to a certain dimension above the stack of sheets in a resting position Deflection position spaced apart until the rear edge snaps into place can be moved approximately horizontally via the stripping element.
  • the stripping element a pivotable lever is arranged in the sheet conveying direction is spring loaded and has a stop with which it is not deflected state in the back of the sheet stack in plant.
  • This device has the disadvantage that after each stripping and Further conveying process of the raised top bow of the levers with his Bouncing against the back of the spring force Sheet stack is moved.
  • From DE-PS 923 132 is a device for separating and feeding of sheets of paper, etc. on printing, painting and folding machines.
  • the sheet separation device has a stop, which is in the upper Area of the rear side of the stack on a sheet stack is adjustable.
  • the Stop has a smooth stop surface.
  • DE-PS 585 514 is a device for producing Cover covers for books, notebooks or the like.
  • fixed side stops parallel to the sheet conveying direction are assigned to a sheet stack.
  • the side stops are not set against the sheet stack and have sprung sheets that can be set against the sheet stack and have retaining tongues at their upper end.
  • DE 43 44 474 C1 is a label magazine for labeling machines known.
  • the label magazine is laterally parallel to the sheet conveying direction enclosed by adjustable hook holders.
  • the object of the invention is a device of the type mentioned create that works quietly and gently.
  • a carrier in the upper rear area under spring force is in contact with the sheet stack, with the stripping element being movably guided on the carrier between its rest position and deflection position, that the stripping element is spring-loaded relative to the carrier in its rest position in the direction of the sheet stack is, and that the stripping element in its rest position the bearing surface of the carrier on the sheet stack in the sheet conveying direction to a certain extent. Since only the stripping element is moved during operation, the moving masses are small and cause only little noise when they move back into their rest position. Impact of a moving component on the back of the sheet stack is avoided, so that the sheets are not damaged as a result.
  • the small moving masses also mean that the device can be constructed from light components of small size, since no greater forces have to be absorbed.
  • the carrier can be against the back of the stack must be spring loaded.
  • the carrier can be designed as a lever be at one end approximately above that rear end portion of the sheet stack by one across Sheet conveying direction swiveling pivot axis and with its other free end on the sheet stack is in plant.
  • a simple device with few components less Size is reached when the scraper element is in one directed in the sheet conveying direction and to the sheet stack arranged open guide recess of the carrier is and in its rest position to a certain extent protrudes from the guide recess in the sheet conveying direction.
  • the preload of the compression spring is adjustable, this can be done in a simple manner by that the compression spring facing away from the stripping element End at an adjustable in the sheet conveying direction Adjusting screw is supported, depending on the The quality of the sheet to be conveyed is the optimum at which Separation force to be overcome can be set.
  • the compression spring is a coil spring.
  • the wiper element is a ball, it is largely no frictional forces and no tilting forces in addition to the spring forces when deflecting the wiper element to overcome the actually the amount of overwhelming forces. About that In addition, the size can be achieved through this training of the wiping element kept optimally low and the Guide recess can be easily made as a bore.
  • the device shown has a carrier 1, which is in the upper rear area of a stack of sheets 2 extends approximately vertically and not at its shown upper area about above the rear End region of the sheet stack 2 by a transverse to the sheet conveying direction 3 directional swivel axis is.
  • the carrier 1 At its free downward end the carrier 1 is designed as a scraper block 4, the with its side directed in the sheet conveying direction 3 at the upper rear area of the sheet stack 2 a compression spring 5 is held in high force.
  • the scraper block is used to prevent damage to the bends 4 at its lower end with one from Sheet stack 2 provided oblique slope 6.
  • scraper block 4 is approximately in the sheet conveying direction 3 directional, continuous guide recess 7 formed in their in the sheet conveying direction 3rd rear area a threaded hole 8 and in its in Sheet conveying direction 3 front area a bore 9 with a smooth wall.
  • the opening of the bore 10 has one opposite the diameter of the bore 9 reduced cross section, for a ball arranged in the bore 9 11 approximately the same diameter as the bore 9 forms a stop.
  • the Ball 11 which is a scraper for the raised Arch forms only about a third of their diameter protrude from the hole 9 in the sheet conveying direction 3.
  • the adjusting screw 12 is the Bias of the coil spring 13 and thus the force to Deflection of the ball 11 adjustable.
  • an Clock of a sheet processing machine approximately vertically up and down movable separator 14 arranged by which the top sheet 15 of the sheet stack 2 can be detected and can be raised.
  • Sheet 15 is shown in Figure 1. Since the ball is over the degree to which they leave their guide recess 7 looks out, in the sheet conveying direction 3 over the sheet stack 2 protrudes, the further lifting of the Sheet 15 through its rear edge 16 to an application the ball 11.
  • the upper sheet 15, however, is further raised and can be fed to a conveyor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Pile Receivers (AREA)

Description

Die Erfindung bezieht sich auf eine Vorrichtung zum Trennen und Anheben des obersten Bogens, insbesondere der obersten Blechtafel, von einem Bogenstapel, mit einer Bogenerfaßeinrichtung zum taktmäßigen Erfassen und Anheben des obersten Bogens, sowie einer auf die Hinterkante des um ein bestimmtes Maß angehobenen obersten Bogens einwirkenden Abstreifeinrichtung, die ein Abstreifelement mit einer Gleitrampe besitzt, welches durch die Hinterkante des obersten Bogens bei dessen Anheben entgegen einer Federkraft aus einer dem Bogenstapel nahen, um ein bestimmtes Maß über den Bogenstapel ragenden Ruhelage in eine den Bogenstapel beabstandete Auslenklage bis zum Überrasten der Hinterkante über das Abstreifelement etwa horizontal bewegbar ist.The invention relates to a device for separating and lifting of the top sheet, especially the top sheet, of one Sheet stack, with a sheet detection device for cyclical detection and Lift the top sheet, as well as one on the back edge of the one certain amount of raised top arc Scraper device which has a scraper element with a sliding ramp, which by the trailing edge of the top sheet when lifting it against a spring force from a near the sheet stack to a certain dimension above the stack of sheets in a resting position Deflection position spaced apart until the rear edge snaps into place can be moved approximately horizontally via the stripping element.

Bei einer derartigen Vorrichtung ist es bekannt, daß das Abstreifelement an einem schwenkbaren Hebel angeordnet ist, der in Bogenförderrichtung federbeaufschlagt ist und einen Anschlag aufweist, mit dem er im nicht ausgelenkten Zustand an der Rückseite des Bogenstapels in Anlage ist. Diese Vorrichtung hat den Nachteil, daß nach jedem Abstreif- und Weiterfördervorgang des angehobenen obersten Bogens der Hebel mit seinem Anschlag durch die Federkraft mit Schwung gegen die Rückseite des Bogenstapels bewegt wird. With such a device it is known that the stripping element a pivotable lever is arranged in the sheet conveying direction is spring loaded and has a stop with which it is not deflected state in the back of the sheet stack in plant. This device has the disadvantage that after each stripping and Further conveying process of the raised top bow of the levers with his Bouncing against the back of the spring force Sheet stack is moved.

Dies führt zu störenden Aufschlaggeräuschen sowie zu Beschädigungen der Hinterkanten der Bogen.This leads to disturbing impact noises and damage to the Trailing edges of the sheets.

Es sind auch weitere Vorrichtungen ähnlicher Art bekannt.Other devices of a similar type are also known.

Aus der DE-PS 923 132 ist eine Vorrichtung zum Vereinzeln und zum Zuführen von Bogen aus Papier usw. an Druck-, Lackier- und Falzmaschinen bekannt. Die Bogenvereinzelungsvorrichtung weist einen Anschlag auf, der im oberen Bereich der rückwärtigen Stapelseite an einen Bogenstapel anstellbar ist. Der Anschlag weist eine glatte Anschlagfläche auf.From DE-PS 923 132 is a device for separating and feeding of sheets of paper, etc. on printing, painting and folding machines. The sheet separation device has a stop, which is in the upper Area of the rear side of the stack on a sheet stack is adjustable. The Stop has a smooth stop surface.

Aus der DE-PS 585 514 ist eine Vorrichtung zum Herstellen von
Einbanddecken für Bücher, Notizbücher o. dgl. bekannt. In dieser Vorrichtung sind seitlich parallel zur Bogenförderrichtung feststehende Seitenanschläge einem Bogenstapel zugeordnet. Die Seitenanschläge sind nicht an den Bogenstapel angestellt und weisen angefederte Bleche auf, die gegen den Bogenstapel anstellbar sind und an ihrem oberen Ende Haltezungen aufweisen.From DE-PS 585 514 is a device for producing
Cover covers for books, notebooks or the like. In this device, fixed side stops parallel to the sheet conveying direction are assigned to a sheet stack. The side stops are not set against the sheet stack and have sprung sheets that can be set against the sheet stack and have retaining tongues at their upper end.

Aus der DE 43 44 474 C1 ist ein Etikettenmagazin für Etikettiermaschinen bekannt. Das Etikettenmagazin wird seitlich parallel zur Bogenförderrichtung von fest einstellbaren Hakenhaltern umschlossen. In jedem Hakenhalter ist ein in Richtung einer Stapelkante angefederter Haken vorgesehen, der mit einem Hakenvorsprung eine Stapelfrontfläche überragt.DE 43 44 474 C1 is a label magazine for labeling machines known. The label magazine is laterally parallel to the sheet conveying direction enclosed by adjustable hook holders. There is one in each hook holder spring-loaded hook provided in the direction of a stack edge, which with a Hook projection protrudes over a stack front surface.

Aufgabe der Erfindung ist es eine Vorrichtung der eingangs genannten Art zu schaffen, die geräuscharm und bogenschonend arbeitet.The object of the invention is a device of the type mentioned create that works quietly and gently.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß ein Träger im oberen rückseitigen Bereich unter Federkraft am Bogenstapel in Anlage ist, wobei am Träger das Abstreifelement zwischen seiner Ruhelage und Auslenklage bewegbar geführt daß das Abstreifelement gegenüber dem Träger in seiner Ruhelage in Richtung auf den Bogenstapel hin federbeaufschlagt ist, und daß das Abstreifelement in seiner Ruhelage die Anlagefläche des Trägers am Bogenstapel in Bogenförderrichtung um ein gewisses Maß überrägt.
Da im Betrieb nur das Abstreifelement bewegt wird, sind die sich bewegenden Massen klein und verursachen bei ihrer Rückbewegung in ihre Ruhelage nur geringe Geräusche. Ein Aufschlagen eines bewegten Bauteils auf der Rückseite des Bogenstapels ist vermieden, so daß auch keine dadurch verursachten Beschädigungen der Bogen erfolgen. Die geringen bewegten Massen führen weiterhin dazu, daß die Vorrichtung aus leichten Bauteilen geringer Baugröße aufgebaut sein kann, da keine größeren Kräfte aufzufangen sind.This object is achieved in that a carrier in the upper rear area under spring force is in contact with the sheet stack, with the stripping element being movably guided on the carrier between its rest position and deflection position, that the stripping element is spring-loaded relative to the carrier in its rest position in the direction of the sheet stack is, and that the stripping element in its rest position the bearing surface of the carrier on the sheet stack in the sheet conveying direction to a certain extent.
Since only the stripping element is moved during operation, the moving masses are small and cause only little noise when they move back into their rest position. Impact of a moving component on the back of the sheet stack is avoided, so that the sheets are not damaged as a result. The small moving masses also mean that the device can be constructed from light components of small size, since no greater forces have to be absorbed.

Damit sich auf einfache Art das Abstreifelement immer in seiner optimalen Position zur Rückseite des oberen Bereichs des Bogenstapels befindet, kann der Träger gegen die Stapelrückseite federbeaufschlagt sein.So that the stripping element is always easy in its optimal position to the back of the top Area of the sheet stack is located, the carrier can be against the back of the stack must be spring loaded.

Zur einfachen selbsttätigen Ausrichtung des Trägers nach der Stapelrückseite kann der Träger als Hebel ausgebildet sein, der an seinem einen Ende etwa über dem hinteren Endbereich des Bogenstapels um eine quer zur Bogenförderrichtung gerichtete Schwenkachse schwenkbar und mit seinem freien anderen Ende an dem Bogenstapel in Anlage ist.For easy automatic alignment of the carrier after the back of the stack, the carrier can be designed as a lever be at one end approximately above that rear end portion of the sheet stack by one across Sheet conveying direction swiveling pivot axis and with its other free end on the sheet stack is in plant.

Eine einfache Vorrichtung mit wenigen Bauteilen geringer Größe wird erreicht, wenn das Abstreifelement in einer in Bogenförderrichtung gerichteten und zum Bogenstapel hin offenen Führungsausnehmung des Trägers angeordnet ist und in seiner Ruhelage um ein bestimmtes Maß in Bogenförderrichtung aus der Führungsausnehmung herausragt. A simple device with few components less Size is reached when the scraper element is in one directed in the sheet conveying direction and to the sheet stack arranged open guide recess of the carrier is and in its rest position to a certain extent protrudes from the guide recess in the sheet conveying direction.

Zur Erzeugung der Federkraft, mit der das Abstreifelement in seine Ruhelage beaufschlagt ist, kann in einfacher Ausgestaltung das Abstreifelement von einer in der Führungsausnehmung angeordneten Druckfeder in Boggenförderrichtung beaufschlagt sein.To generate the spring force with which the stripping element is loaded in its rest position, can in simple Configuration of the stripping element from a the guide recess arranged compression spring in the arc conveying direction be charged.

Ist dabei die Vorspannung der Druckfeder einstellbar, wobei dies auf einfache Weise dadurch erfolgen kann, daß die Druckfeder mit ihrem dem Abstreifelement abgewandten Ende an einer in Bogenförderrichtung verstellbaren Stellschraube abgestützt ist, so kann je nach der Qualität des zu fördernden Bogens die optimale, bei der Trennung zu überwindende Kraft eingestellt werden.If the preload of the compression spring is adjustable, this can be done in a simple manner by that the compression spring facing away from the stripping element End at an adjustable in the sheet conveying direction Adjusting screw is supported, depending on the The quality of the sheet to be conveyed is the optimum at which Separation force to be overcome can be set.

Zu einer geringen Baugröße führt es, wenn die Druckfeder eine Wendelfeder ist.It leads to a small size if the compression spring is a coil spring.

Ist das Abstreifelement eine Kugel, so sind weitgehend keine Reibkräfte und keine Verkantungskräfte zusätzlich zu den Federkräften bei der Auslenkung des Abstreifelements zu überwinden, die die Höhe der tatsächlich zu überwindenden Kräfte unbestimmbar machen würden. Darüber hinaus kann durch diese Ausbildung die Baugröße des Abstreifelements optimal gering gehalten und die Führungsausnehmung als Bohrung einfach hergestellt werden. If the wiper element is a ball, it is largely no frictional forces and no tilting forces in addition to the spring forces when deflecting the wiper element to overcome the actually the amount of overwhelming forces. About that In addition, the size can be achieved through this training of the wiping element kept optimally low and the Guide recess can be easily made as a bore.

Ist die Kugel um etwa ein Drittel ihres Durchmessers in Förderrichtung aus der Führungsausnehmung herausragbar, so ist eine Abstützung der Kugel quer zu ihrer Auslenkrichtung immer sicher gestellt. Gleichzeitig ist die Neigung der Kugelfläche, entlang der sich die angehobene Bogenkante bewegt derart, daß eine große Kraftkomponente in Erstreckungsrichtung der Führungsausnehmung gerichtet ist.Is the ball in about a third of its diameter Direction of conveyance can be protruded from the guide recess, this is how the ball is supported transversely to its direction of deflection always ensured. At the same time it is Inclination of the spherical surface along which the raised Edge of the sheet moves such that a large force component in the direction of extension of the guide recess is directed.

Bei Härtung zumindest der Oberfläche der Kugel wird eine hohe Verschleißbeständigkeit sowohl gegen die Reibbeaufschlagung durch die Bogen als auch gegen die Reibbeaufschlagung in der Führungsausnehmung erreicht.When hardening at least the surface of the ball will high wear resistance against both Rubbing through the arch as well as against the Friction applied in the guide recess reached.

Ein Ausführungsbeispiel der Erfindung ist in Zeichnung dargestellt und wird im folgenden näher beschreiben. Es zeigen

Figur 1
eine Vorrichtung zum Trennen und Anheben des obersten Bogens in einer ersten Arbeitsstellung
Figur 2
die Vorrichtung nach Figur 1 in einer zweiten Arbeitsstellung
Figur 3
die Vorrichtung nach Figur 1 in einer Abstreifstellung.
An embodiment of the invention is shown in the drawing and will be described in more detail below. Show it
Figure 1
a device for separating and lifting the top sheet in a first working position
Figure 2
the device of Figure 1 in a second working position
Figure 3
the device of Figure 1 in a stripping position.

Die dargestellte Vorrichtung weist einen Träger 1 auf, der sich im oberen rückseitigen Bereich eines Bogenstapels 2 etwa senkrecht erstreckt und an seinem nicht dargestellten oberen Bereich etwa über dem hinteren Endbereich des Bogenstapels 2 um eine quer zur Bogenförderrichtung 3 gerichtete Schwenkachse schwenkbar ist.The device shown has a carrier 1, which is in the upper rear area of a stack of sheets 2 extends approximately vertically and not at its shown upper area about above the rear End region of the sheet stack 2 by a transverse to the sheet conveying direction 3 directional swivel axis is.

An seinem freien nach unten gerichteten anderen Ende ist der Träger 1 als Abstreifklotz 4 ausgebildet, der mit seiner in Bogenförderrichtung 3 gerichteten Seite am oberen rückseitigen Bereich des Bogenstapels 2 durch eine Druckfeder 5 hoher Kraft in Anlage gehalten ist.At its free downward end the carrier 1 is designed as a scraper block 4, the with its side directed in the sheet conveying direction 3 at the upper rear area of the sheet stack 2 a compression spring 5 is held in high force.

Zur Vermeidung von Beschädigungen der Bogen ist der Abstreifklotz 4 an seinem unteren Ende mit einer vom Bogenstapel 2 weggerichteten Schräge 6 versehen.The scraper block is used to prevent damage to the bends 4 at its lower end with one from Sheet stack 2 provided oblique slope 6.

In dem Abstreifklotz 4 ist eine etwa in Bogenförderrichtung 3 gerichtete, durchgehende Führungsausnehmung 7 ausgebildet, die in ihrem in Bogenförderrichtung 3 hinteren Bereich eine Gewindebohrung 8 und in ihrem in Bogenförderrichtung 3 vorderen Bereich eine Bohrung 9 mit glatter Wandung ist. In the scraper block 4 is approximately in the sheet conveying direction 3 directional, continuous guide recess 7 formed in their in the sheet conveying direction 3rd rear area a threaded hole 8 and in its in Sheet conveying direction 3 front area a bore 9 with a smooth wall.

Die Mündungsöffnung der Bohrung 10 besitzt einen gegenüber dem Durchmesser der Bohrung 9 reduzierten Querschnitt, der für eine in der Bohrung 9 angeordnete Kugel 11 etwa gleichen Durchmessers wie die Bohrung 9 einen Anschlag bildet. Durch diesen Anschlag kann die Kugel 11, die ein Abstreifelement für die angehobenen Bogen bildet, nur um etwa ein Drittel ihres Durchmessers in Bogenförderrichtung 3 aus der Bohrung 9 herausragen.The opening of the bore 10 has one opposite the diameter of the bore 9 reduced cross section, for a ball arranged in the bore 9 11 approximately the same diameter as the bore 9 forms a stop. With this stop, the Ball 11, which is a scraper for the raised Arch forms only about a third of their diameter protrude from the hole 9 in the sheet conveying direction 3.

In die Gewindebohrung 8 ist eine Madenschraube als Stellschraube 12 eingeschraubt, an deren innerer Stirnseite sich eine als Wendelfeder 13 ausgebildete Druckfeder wesentlich geringerer Kraft als der Druckfeder 5 mit ihrem einen Ende abstützt. Mit ihrem anderen Ende beaufschlagt die Wendelfeder 13 die Kugel 11 in Bogenförderrichtung 3. Mittels der Stellschraube 12 ist die Vorspannung der Wendelfeder 13 und damit die Kraft zum Auslenken der Kugel 11 einstellbar.In the threaded bore 8 is a grub screw as Set screw 12 screwed in on the inner end face a compression spring designed as a helical spring 13 much less force than the compression spring 5 supports with one end. With its other end the helical spring 13 acts on the ball 11 in the sheet conveying direction 3. By means of the adjusting screw 12 is the Bias of the coil spring 13 and thus the force to Deflection of the ball 11 adjustable.

Über dem hinteren Ende des Bogenstapels 2 ist ein im Takt einer Bogen verarbeitenden Maschine etwa senkrecht auf- und abbewegbarer Trennsauger 14 angeordnet, durch den der jeweils oberste Bogen 15 des Bogenstapels 2 erfaßbar und anhebbar ist. Over the rear end of the sheet stack 2 is an Clock of a sheet processing machine approximately vertically up and down movable separator 14 arranged by which the top sheet 15 of the sheet stack 2 can be detected and can be raised.

Ein derart bis vor Erreichen der Kugel 11 angehobener Bogen 15 ist in Figur 1 dargestellt. Da die Kugel um das Maß, mit dem sie aus ihrer Führungsausnehmung 7 herausschaut, in Bogenförderrichtung 3 über den Bogenstapel 2 ragt, kommt es bei dem weiteren Anheben des Bogens 15 durch dessen Hinterkante 16 zu einer Beaufschlagung der Kugel 11. Dabei wird die Kugel 11, deren Oberfläche als Gleitrampe wirkt, entgegen der Kraft der Wendelfeder 13 in die Führungsausnehmung 12 hineingedrückt. Dies ist in Figur 2 dargestellt.Such a raised until the ball 11 is reached Sheet 15 is shown in Figure 1. Since the ball is over the degree to which they leave their guide recess 7 looks out, in the sheet conveying direction 3 over the sheet stack 2 protrudes, the further lifting of the Sheet 15 through its rear edge 16 to an application the ball 11. The ball 11, whose Acts as a sliding ramp, against the force of the Helical spring 13 pressed into the guide recess 12. This is shown in Figure 2.

Wird von dem Trennsauger 14 nicht ein einzelner Bogen 15 sondern ein Doppelbogen erfaßt und angehoben, so kommt es bei der Beaufschlagung der Kugel 11 durch die Hinterkanten 15 der beiden Bogen zu einer die Hinterkanten der beiden Bogen trennenden Beaufschlagung durch die Kugel 11, wobei der untere angehobene Bogen durch die Kugel 11 an einer weiteren Hubbewegung gehindert wird und auf den Bogenstapel zurückfällt.Is not a single sheet of the suction pad 14 15 but a double sheet is grasped and raised, see above it occurs when the ball 11 is acted upon by the Trailing edges 15 of the two sheets to one the trailing edges of the two arches that act as separators the ball 11, with the lower bow raised by the ball 11 prevented from further stroke movement and falls back on the sheet pile.

Der obere Bogen 15 dagegen wird weiter angehoben und kann einer Weiterfördereinrichtung zugeführt werden.The upper sheet 15, however, is further raised and can be fed to a conveyor.

Die erfindungsgemäße Vorrichtung ist besonders gut für Bogen höherer Steifigkeit und Blechtafeln geeignet.

1
Träger
2
Bogenstapel
3
Bogenförderrichtung
4
Abstreifklotz
5
Druckfeder
6
Schräge
7
Führungsausnehmung
8
Gewindebohrung
9
Bohrung
10
Mündungsöffnung
11
Kugel
12
Stellschraube
13
Wendelfeder
14
Trennsauger
15
oberer Bogen
16
Hinterkante
The device according to the invention is particularly well suited for sheets of higher rigidity and metal sheets.
1
carrier
2nd
Sheet stack
3rd
Sheet conveying direction
4th
Scraper
5
Compression spring
6
Weird
7
Guide recess
8th
Tapped hole
9
drilling
10th
Mouth opening
11
Bullet
12th
Set screw
13
Coil spring
14
Separating suction
15
upper arch
16
Trailing edge

Claims (10)

  1. Device for separating and lifting the uppermost sheet, particularly the uppermost sign panel, from a sheet pile with a sheet grasping device for timed grasping and lifting the uppermost sheet, as well as a stripping device acting on the rear edge of the uppermost sheet lifted by a given amount, which has a stripping element with a slide ramp which, via the rear edge of the uppermost sheet on its lifting up is movable against a spring force substantially horizontally from a rest position adjacent the sheet pile and projecting by a given amount over the sheet pile into a deflected position spaced from the sheet pile until the rear edge latches past the stripping element, characterised in that a carrier (1) in the upper rear side region is adjacent the sheet pile (2) under spring force, wherein on the carrier (1) the stripping element is guided movably between its rest position and deflected position, that the stripping element relative to the carrier (1) in its rest position is spring-loaded in the direction towards the sheet pile (2), and that the stripping element in its rest position projects past the abutment surface of the carrier (1) against the sheet pile (2) in the sheet feed direction (3) by a certain amount.
  2. Device according to Claim 1, characterised in that the carrier (1) is constructed as a lever which at its one end is swivellable about a swivel axis substantially above the rear end region of the sheet pile (2) directed transverse to the sheet feed direction (3) and with its free other end is under spring force against the sheet pile (2).
  3. Device according to one of the preceding Claims, characterised in that the stripping element is arranged movably in a guide recess (7) of the carrier (1) directed in the sheet feed direction (3) and open towards the sheet pile (2), from which it projects in its rest position by a given amount in the sheet feed direction (3).
  4. Device according to Claim 3, characterised in that the stripping element is subjected to a compression spring (13) arranged in the guide aperture (7) in the sheet feed direction (3).
  5. Device according to Claim 4, characterised in that the pretensioning of the compression spring (13) is adjustable.
  6. Device according to Claim 5, characterised in that the compression spring (13) with its end turned away from the stripping element is supported adjustably in the sheet feed direction (3) on an adjustment screw (12).
  7. Device according to Claim 4, characterised in that the compression spring (13) is a coil spring.
  8. Device according to one of the preceding Claims, characterised in that the stripping element is a ball (11).
  9. Device according to Claim 8, characterised in that the ball (11) can project by about a third of its diameter in the feed direction (3) from the guide aperture (7).
  10. Device according to Claim 8, characterised in that at least the surface of the ball (11) is hardened.
EP97106151A 1996-04-24 1997-04-15 Device for separating and lifting the uppermost sheet of a sheet stack Expired - Lifetime EP0803457B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19616333 1996-04-24
DE19616333A DE19616333C2 (en) 1996-04-24 1996-04-24 Device for separating and lifting the top sheet from a sheet stack

Publications (3)

Publication Number Publication Date
EP0803457A2 EP0803457A2 (en) 1997-10-29
EP0803457A3 EP0803457A3 (en) 1998-04-01
EP0803457B1 true EP0803457B1 (en) 2000-01-19

Family

ID=7792286

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97106151A Expired - Lifetime EP0803457B1 (en) 1996-04-24 1997-04-15 Device for separating and lifting the uppermost sheet of a sheet stack

Country Status (3)

Country Link
EP (1) EP0803457B1 (en)
JP (1) JP2891958B2 (en)
DE (2) DE19616333C2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6701028B2 (en) * 2016-08-10 2020-05-27 テクノエイト株式会社 Sheet material separation device
JP7132199B2 (en) * 2019-09-30 2022-09-06 フタバ産業株式会社 Plate material transfer system
DE102022107710A1 (en) 2022-03-31 2023-10-05 Kolbus Gmbh & Co. Kg Device for separating an uppermost sheet

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE576117C (en) * 1931-09-20 1933-05-08 Praktische Maschinen G M B H Device for the production of cover covers for books, notebooks or the like.
DE585514C (en) * 1932-11-06 1933-10-04 Praktische Maschinen G M B H Device for the production of cover covers for books, notebooks or the like.
US2722416A (en) * 1950-05-10 1955-11-01 Backhouse Headley Townsend Separation of sheets of paper or the like from the top of a pile
DE923132C (en) * 1952-06-29 1955-02-03 Mabeg Maschb G M B H Device for separating and feeding sheets of paper etc. to printing, varnishing and folding machines
JPS55140444A (en) * 1979-04-18 1980-11-01 Kingo Ishikawa Auxiliary stripping device for sheet paper
US5183242A (en) * 1991-08-30 1993-02-02 D&K Custom Machine Design, Inc. Method and apparatus for feeding sheets
DE4344474C1 (en) * 1993-12-21 1995-01-05 Anker Maschbau Label magazine for labelling machines

Also Published As

Publication number Publication date
JP2891958B2 (en) 1999-05-17
EP0803457A2 (en) 1997-10-29
JPH1035929A (en) 1998-02-10
DE19616333A1 (en) 1997-11-06
DE59701024D1 (en) 2000-02-24
DE19616333C2 (en) 2001-07-12
EP0803457A3 (en) 1998-04-01

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