EP0620174B1 - Device for separating sheets from a stack of sheets - Google Patents

Device for separating sheets from a stack of sheets Download PDF

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Publication number
EP0620174B1
EP0620174B1 EP94104251A EP94104251A EP0620174B1 EP 0620174 B1 EP0620174 B1 EP 0620174B1 EP 94104251 A EP94104251 A EP 94104251A EP 94104251 A EP94104251 A EP 94104251A EP 0620174 B1 EP0620174 B1 EP 0620174B1
Authority
EP
European Patent Office
Prior art keywords
sheet
stack
stop
sheets
magazine
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
Application number
EP94104251A
Other languages
German (de)
French (fr)
Other versions
EP0620174A1 (en
Inventor
Manfred Geffert
Joachim Schröder
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.)
Kolbus GmbH and Co KG
Original Assignee
Kolbus GmbH and Co KG
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 Kolbus GmbH and Co KG filed Critical Kolbus GmbH and Co KG
Publication of EP0620174A1 publication Critical patent/EP0620174A1/en
Application granted granted Critical
Publication of EP0620174B1 publication Critical patent/EP0620174B1/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
    • B65H3/085—Suction grippers separating from the bottom of pile
    • B65H3/0858—Suction grippers separating from the bottom of pile this action resulting merely in a curvature of each article being separated
    • B65H3/0875—Suction grippers separating from the bottom of pile this action resulting merely in a curvature of each article being separated the final separation being performed by mechanical grippers

Definitions

  • the invention relates to a device for the continuous separation of sheets a sheet stack from a stack magazine with one each to be separated Sheet in the area of its leading edge and from the sheet stack tilting suction element, with a gripper mechanism for taking over the tilted sheet from the sheet stack, with a stack magazine limit in Form of a front stop, if necessary with dividing tips, and with one under the front area of the sheet stack movable and this stack lifter supporting.
  • the separating devices are each provided with a stack magazine, in which the sheets are stacked with alignment at a front boundary as well as on side guides.
  • the bottom printed sheet is gripped by the sucker and with the back fold first through an opening Hand it over to the gripper mechanism of the take-off drum in the magazine bottom. It can be separating or at the front boundary of the stacking magazine Retention peaks can be provided, which are the separation of the printed sheet edge and Serve the entire stack of printed sheets.
  • From DE-C-582 334 (D1) is a collating machine with known a straight-line trigger and deposit gripper, one of the sheets in a stack magazine by means of a Suction plate tilted the bottom bow in the area of his Front edge detected and fed to a collecting channel.
  • the stacking magazine consists of a stacking plate to hold the stack of sheets as well as from a front stationary magazine stop. Furthermore, one is in timing with the movement the suction plate can be swiveled under the stack of sheets with an angle lever articulated on it to reach under and lifting the stack.
  • the object of the invention is a device of the generic type To create a way that ensures a reliable separation of the sheets.
  • a stack magazine there are printed sheets 1a on a magazine bottom 2 with their back folds in shape against a front magazine boundary a stop 3 and supporting the printing sheet edges on two in a defined distance from each other dividing tips 4 in the stop 3rd
  • An additional support means forms a mobile under the sheet stack 1, the stack in the front area supporting stack lifter 70, which in time Coordination with suction cups 5 can be moved into a retracted position.
  • the separating tips 4 in the stop 3 adjust so that they are more or less with a view to safe disconnection reach less far into the stacking magazine.
  • the front stop 3 has a free space 3a the sheet following the tilted printed sheet 1a, the orientation in the magazine for this sheet from a contact surface 7a one from the stack lifter 70 formed stop part 7th is taken over, which is synchronized with the movement of the suction elements 5 into a space aligned with the front magazine boundary and the free space 3a blocking position and controllable back, so that the to separating sheets 1a for the process of capturing and tipping through the suction cup 5 is released from the contact surface 7a of the stack lifter 70.
  • the invention is not limited to that shown and described Embodiment.
  • the contact surface formed by the stack lifter 70 7a can be a separate one aligned with the front stop 3 Alignment element that can be moved back and forth or one on the front stop 3 hinged back and forth swiveling stop element use Find.

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

Description

Die Erfindung betrifft eine Vorrichtung zum fortlaufenden Vereinzeln von Bogen eines Bogenstapels aus einem Stapelmagazin mit einem jeweils den zu vereinzelnden Bogen im Bereich seiner Vorderkante erfassenden und vom Bogenstapel abkippenden Saugelement, mit einem Greifermechanismus zur Übernahme des abgekippten Bogens vom Bogenstapel, mit einer Stapelmagazinbegrenzung in Form eines vorderen Anschlags, ggf. mit Trennspitzen, und mit einem unter den vorderen Bereich des Bogenstapels fahrbaren und diesen stützenden Stapelheber.The invention relates to a device for the continuous separation of sheets a sheet stack from a stack magazine with one each to be separated Sheet in the area of its leading edge and from the sheet stack tilting suction element, with a gripper mechanism for taking over the tilted sheet from the sheet stack, with a stack magazine limit in Form of a front stop, if necessary with dividing tips, and with one under the front area of the sheet stack movable and this stack lifter supporting.

Für das Zusammentragen von Druckbogen zu Buchblocks kommen derartige längs einer Reihe angeordnete Vereinzelungsvorrichtungen zur Anwendung mit einer Abzugstrommel zwischen einem Druckbogenmagazin und einem Auflagetisch eines Sammelförderers. An der Abzugstrommel befindet sich ein Greifermechanismus zum Erfassen eines von einem Druckbogenstapel mittels eines Saugers abgeschwenkten Druckbogens.For the collation of printed sheets to book blocks such come along a series of separating devices for use with a Take-off drum between a sheet magazine and a support table Collective conveyor. There is a gripper mechanism on the take-off drum for grasping one swung from a stack of printed sheets by means of a suction device Printed sheet.

Die Vereinzelungsvorrichtungen sind jeweils mit einem Stapelmagazin versehen, in dem sich die Druckbogen stapelweise unter Ausrichtung an einer vorderen Begrenzung sowie an seitlichen Führungen befinden. Der jeweils unterste Druckbogen wird von dem Sauger erfaßt und mit dem Rückenfalz voran durch eine Öffnung im Magazinboden an den Greifermechanismus der Abzugstrommel übergeben. Dabei können an der vorderen Begrenzung des Stapelmagazins Trenn- oder Rückhaltespitzen vorgesehen sein, die der Trennung der Druckbogenkante und als Auflage für den gesamten Druckbogenstapel dienen. The separating devices are each provided with a stack magazine, in which the sheets are stacked with alignment at a front boundary as well as on side guides. The bottom printed sheet is gripped by the sucker and with the back fold first through an opening Hand it over to the gripper mechanism of the take-off drum in the magazine bottom. It can be separating or at the front boundary of the stacking magazine Retention peaks can be provided, which are the separation of the printed sheet edge and Serve the entire stack of printed sheets.

Aus der DE-C-582 334 (D1) ist eine Zusammentragmaschine mit einem geradlinig geführten Abzugs- und Ablegegreifer bekannt, der einen vom Bogenstapel in einem Stapelmagazin mittels einer Saugplatte abgekippten untersten Bogen im Bereich seiner Vorderkante erfaßt und einem Sammelkanal zuführt. Das Stapelmagazin besteht aus einer Stapelplatte zur Aufnahme der Bogenstapel sowie aus einem vorderen ortsfesten Magazinanschlag. Ferner ist ein in zeitlicher Abstimmung mit der Bewegung der Saugplatte unter den Bogenstapel schwenkbarer Stapelheber mit einem an diesem angelenkten Winkelhebel zum Unterfassen und Anheben des Stapels vorgesehen. From DE-C-582 334 (D1) is a collating machine with known a straight-line trigger and deposit gripper, one of the sheets in a stack magazine by means of a Suction plate tilted the bottom bow in the area of his Front edge detected and fed to a collecting channel. The stacking magazine consists of a stacking plate to hold the stack of sheets as well as from a front stationary magazine stop. Furthermore, one is in timing with the movement the suction plate can be swiveled under the stack of sheets with an angle lever articulated on it to reach under and lifting the stack.

Wie die Praxis zeigt, läßt sich ein funktionssicheres Erfassen und Abkippen des untersten Bogens in den Wirkbereich des Greifermechanismus nicht sicherstellen, insofern als die Bogen mit ihrem Rückenfalz an dem vorderen Anschlag des Stapelmagazins mit einer relativ großen Anpreßkraft anliegen, bedingt dadurch, daß die Bogen aufgrund der Reibkräfte zwischen den Bogen beim Abziehen des untersten Bogens durch den Greifermechanismus gegen den Anschlag gepreßt werden. Die Folge davon sind Fehlbogenabzüge, da das Saugelement vielfach nicht in der Lage ist, die Anpreßkraft, mit der der Bogen an dem Anschlag gehalten wird, zu überwinden. Verstärkt tritt dieser Effekt bei Bogen aus steifen Materialien auf.As practice shows, a reliable detection and tipping can be done of the lowest arch in the effective area of the gripper mechanism, insofar as the arch with its back fold at the front stop of the stack magazine with a relatively large contact pressure, due to the fact that the sheet due to the frictional forces between the sheets when pulling the bottom sheet off by the gripper mechanism against the stop be pressed. The consequence of this is false sheet prints, since the In many cases, the suction element is unable to withstand the contact pressure with which the bow held on the stop to overcome. Steps up this effect on sheets made of stiff materials.

Die Aufgabe der Erfindung besteht darin, eine Vorrichtung der gattungsgemäßen Art zu schaffen, die ein funktionssicheres Vereinzeln der Bogen gewährleistet.The object of the invention is a device of the generic type To create a way that ensures a reliable separation of the sheets.

Gelöst wird die Aufgabe durch die kennzeichnenden Merkmale des Anspruchs 1. Vorteilhafte Ausgestaltungen ergeben sich aus den Unteransprüchen.The object is achieved by the characterizing features of claim 1. Advantageous refinements result from the subclaims.

Die Erfindung wird nachfolgend anhand eines Ausführungsbeispiels näher erläutert. Es zeigen:

Fig. 1
eine Vorrichtung zum fortlaufenden Vereinzeln von Bogen aus einem Stapelmagazin in einer Position vor dem Erfassen und Abkippen eines Druckbogens,
Fig. 2
die Vorrichtung in einer Seitenansicht im Schnitt in einer Position nach Erfassen und Abkippen eines Druckbogens.
The invention is explained in more detail below using an exemplary embodiment. Show it:
Fig. 1
a device for the continuous separation of sheets from a stack magazine in a position prior to the detection and tipping of a printed sheet,
Fig. 2
the device in a side view in section in a position after capturing and tipping a sheet.

In einem Stapelmagazin befinden sich Druckbogen 1a auf einem Magazinboden 2 unter Anlage ihrer Rückenfalze an einer vorderen Magazinbegrenzung in Form eines Anschlags 3 sowie unter Abstützung der Druckbogenkanten auf zwei in einem definierten Abstand zueinander angeordneten Trennspitzen 4 in dem Anschlag 3. In a stack magazine there are printed sheets 1a on a magazine bottom 2 with their back folds in shape against a front magazine boundary a stop 3 and supporting the printing sheet edges on two in a defined distance from each other dividing tips 4 in the stop 3rd

Ein zusätzliches Stützmittel bildet ein unter den Druckbogenstapel 1 fahrbarer, den Stapel im vorderen Bereich stützender Stapelheber 70, der in zeitlicher Abstimmung mit Saugern 5 in eine zurückgefahrene Position bewegbar ist.An additional support means forms a mobile under the sheet stack 1, the stack in the front area supporting stack lifter 70, which in time Coordination with suction cups 5 can be moved into a retracted position.

Entsprechend der Beschaffenheit und Papierqualität der fortlaufend abzuziehenden Druckbogen 1a lassen sich die Trennspitzen 4 in dem Anschlag 3 verstellen, derart, daß sie im Hinblick auf ein sicheres Trennen mehr oder weniger weit in das Stapelmagazin greifen.According to the nature and paper quality of the continuously to be deducted Printing sheet 1a, the separating tips 4 in the stop 3 adjust so that they are more or less with a view to safe disconnection reach less far into the stacking magazine.

In bekannter Weise wird der unterste Druckbogen 1a von den Saugern 5 im Bereich des Bogenrückenfalzes erfaßt und durch eine Öffnung im Magazinboden 2 vom Bogenstapel 1 abgekippt und zum Abziehen an einen Greifermechanismus 8 einer Abzugstrommel 6 übergeben.In a known manner, the bottom printed sheet 1 a from the suction cups 5 in the area of the arched back fold and gripped through an opening in the magazine bottom 2 tilted from the sheet stack 1 and to be pulled off to a gripper mechanism 8 to a take-off drum 6.

Erfindungsgemäß weist der vordere Anschlag 3 einen Freiraum 3a für den dem abgekippten Druckbogen 1a folgenden Bogen auf, wobei die Ausrichtung im Magazin für diesen Bogen von einer Anlagefläche 7a eines vom Stapelheber 70 gebildeten Anschlagteiles 7 übernommen wird, der in zeitlicher Abstimmung mit der Bewegung der Saugelemente 5 in eine mit der vorderen Magazinbegrenzung fluchtende und den Freiraum 3a versperrende Position und zurück steuerbar ist, derart, daß der zu vereinzelnde Druckbogen 1a für den Vorgang des Erfassens und Abkippens durch die Sauger 5 von der Anlagefläche 7a des Stapelhebers 70 freikommt. Durch den hierdurch erreichten Fortfall der Anpreßkräfte an den vorderen Magazinbegrenzungen lassen sich Fehlbogenabzüge sicher verhindern.According to the invention, the front stop 3 has a free space 3a the sheet following the tilted printed sheet 1a, the orientation in the magazine for this sheet from a contact surface 7a one from the stack lifter 70 formed stop part 7th is taken over, which is synchronized with the movement of the suction elements 5 into a space aligned with the front magazine boundary and the free space 3a blocking position and controllable back, so that the to separating sheets 1a for the process of capturing and tipping through the suction cup 5 is released from the contact surface 7a of the stack lifter 70. By the resultant loss of contact pressure at the front magazine limits false sheets can be prevented safely.

Die Erfindung beschränkt sich nicht auf die dargestellte und beschriebene Ausführungsform. Anstelle der von dem Stapelheber 70 gebildeten Anlagefläche 7a kann ein separates mit dem vorderen Anschlag 3 fluchtendes vor- und zurückbewegbares Ausrichtelement oder ein an dem vorderen Anschlag 3 angelenktes vor- und zurückschwenkbares Anschlagelement Verwendung finden.The invention is not limited to that shown and described Embodiment. Instead of the contact surface formed by the stack lifter 70 7a can be a separate one aligned with the front stop 3 Alignment element that can be moved back and forth or one on the front stop 3 hinged back and forth swiveling stop element use Find.

Claims (3)

  1. Device for serially separating sheets of a sheet stack (1) from a stack magazine, this device having a suction element (5) which in each instance grasps the sheet to be separated, in the vicinity of its front edges, and downwardly inclines it from the sheet stack (1), having a gripper mechanism (8) for acquiring the downwardly inclined sheet (1a) from said sheet stack (1), having a stack magazine boundary in the form of a front stop (3) which if appropriate has separating points (4), and having a stack lifter (70) which can be moved to below the front portion of the sheet stack (1), supporting it, characterized in that a vertical stopping face (7a) is assigned to the front stop (3), this stopping face (7a) acting on sheets that follow a sheet (1a) which has been downwardly inclined, and being backwardly movable in synchronism with the movement of the suction element (5), in the sense of releasing the spine fold of that sheet (1a) which is to be downwardly inclined at that moment in time, from the stopping face (7a).
  2. Device according to Claim 1, characterized in that the stop (3) presents a clearance space (3a) for the sheet that follows the sheet (1a) which has been downwardly inclined, and a stop component (7) can be moved into a position flush with the stopping face of the stop (3), barring the clearance space.
  3. Device according to Claim 1 or 2, characterized in that the stop component (7) is formed by the stack lifter (70) and can be brought into a position with a stopping face (7a) flush with the stopping face of the stop (3).
EP94104251A 1993-04-16 1994-03-18 Device for separating sheets from a stack of sheets Expired - Lifetime EP0620174B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4312476 1993-04-16
DE4312476A DE4312476A1 (en) 1993-04-16 1993-04-16 Device for separating sheets from a stack of sheets

Publications (2)

Publication Number Publication Date
EP0620174A1 EP0620174A1 (en) 1994-10-19
EP0620174B1 true EP0620174B1 (en) 1998-11-11

Family

ID=6485637

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94104251A Expired - Lifetime EP0620174B1 (en) 1993-04-16 1994-03-18 Device for separating sheets from a stack of sheets

Country Status (4)

Country Link
US (1) US5535998A (en)
EP (1) EP0620174B1 (en)
JP (1) JPH0732761A (en)
DE (2) DE4312476A1 (en)

Families Citing this family (13)

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Publication number Priority date Publication date Assignee Title
US5927704A (en) * 1996-05-14 1999-07-27 Eastman Kodak Company Sheet feed apparatus preventing image ruboff
DE29822224U1 (en) * 1998-12-14 1999-02-04 Pfankuch Maschinen GmbH, 22926 Ahrensburg Device for collecting and transferring paper blanks or the like.
IT1317704B1 (en) 2000-05-29 2003-07-15 Sitma Spa PROCEDURE FOR FEEDING SHEET PRODUCTS TO A CONVEYOR AND COLLECTION GROUP.
US6616137B2 (en) * 2001-02-02 2003-09-09 Heidelbergerdruckmaschinen Ag Adjustable needles for a sheet separating device
US6623000B2 (en) 2001-06-15 2003-09-23 Prim Hall Enterprises Inc. Apparatus and method for separating sheet material by means of a reciprocating disk separator
US6659448B2 (en) * 2001-10-30 2003-12-09 Heidelberger Druckmaschinen Ag Adjustable separator for a sheet separating device
JP2005320158A (en) * 2004-05-03 2005-11-17 Helmut Steinhilber Separation method and device for sheets of recording media in a pile
DE102004030245B3 (en) * 2004-06-23 2005-09-22 Pitney Bowes Deutschland Gmbh Insert feed device for post handling systems has lowermost insert either bent downwards by vacuum suction unit into gripping region of insert withdrawal device, or pushed forward through opening in front wall of magazine housing
DE102004030244B3 (en) * 2004-06-23 2005-09-22 Pitney Bowes Deutschland Gmbh Post processing system for e.g. leaflet magazine has bottom outlet presented to vacuum rocking removal arm
DE102004030242B3 (en) * 2004-06-23 2005-09-22 Pitney Bowes Deutschland Gmbh Mail preparation and dispatch system has rocking vacuum finger offset from base of leaflet magazine
DE102011007994A1 (en) 2011-01-04 2012-07-05 Horst Rathert Sheet separation device for separation of double- or multi-layer sheets i.e. porous paper sheets, from stack in e.g. printing machine, has friction finger moving front edge or corners of sheet, so that sheets are separated by easy folding
US8827195B2 (en) * 2011-09-05 2014-09-09 Ningbo Ofitech Business Machines Co., Ltd. Auto paper-combing mechanism and an auto paper-feeding mechanism of a paper shredder
CH706769A1 (en) * 2012-07-27 2014-01-31 Ferag Ag Device for separating single flat, bendable objects from the bottom of a stack of such articles.

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Publication number Priority date Publication date Assignee Title
DE287699C (en) *
DE582334C (en) * 1930-07-20 1933-08-12 Gutberlet & Co A Device for depositing the individual sheets removed from a stack by means of a pick-up gripper, in particular for gathering machines
DE583785C (en) * 1932-06-01 1933-09-09 Gutberlet & Co A Win direction for depositing the individual sheets removed from a stack by means of a pick-up gripper, especially for gathering machines
CH432563A (en) * 1965-05-12 1967-03-31 Graphicart Int Method and device for separating sheets, staples, newspapers or the like. Folded printed matter
CH436350A (en) * 1966-03-25 1967-05-31 Mueller Hans Grapha Masch Device for separating sheets of paper
DE1809376B2 (en) * 1968-11-16 1971-07-29 Winkler & Dunnebier, Maschinenfabrik und Eisengießerei KG, 5450 Neuwied DEVICE FOR INSERTING SHEETS CUTTING OR THE SAME UNDER A STACK INTO A PROCESSING MACHINE, IN PARTICULAR A MACHINE FOR MAKING LETTER ENVELOPES OR THE LIKE
USRE28048E (en) * 1973-03-16 1974-06-18 Apparatus and method for separating signatures in a gatherer
US4013283A (en) * 1975-08-29 1977-03-22 Bell & Howell Company Pull-foot sheet feeding device
DD213906A1 (en) * 1983-03-02 1984-09-26 Polygraph Leipzig MAGAZINE FOR STACKS REGISTERED CURVED BOW
EP0333243A3 (en) * 1988-03-10 1989-09-27 Akzo N.V. Sulphated k5 antigen and sulphated k5 antigen fragments

Also Published As

Publication number Publication date
EP0620174A1 (en) 1994-10-19
DE4312476A1 (en) 1994-10-20
DE59407250D1 (en) 1998-12-17
JPH0732761A (en) 1995-02-03
US5535998A (en) 1996-07-16

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