EP1953102B1 - Vorrichtung zur Entnahme von Briefumschlägen eines Stapels - Google Patents

Vorrichtung zur Entnahme von Briefumschlägen eines Stapels Download PDF

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Publication number
EP1953102B1
EP1953102B1 EP07002072A EP07002072A EP1953102B1 EP 1953102 B1 EP1953102 B1 EP 1953102B1 EP 07002072 A EP07002072 A EP 07002072A EP 07002072 A EP07002072 A EP 07002072A EP 1953102 B1 EP1953102 B1 EP 1953102B1
Authority
EP
European Patent Office
Prior art keywords
separating
deflecting surface
envelope
feeding path
stack
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.)
Active
Application number
EP07002072A
Other languages
English (en)
French (fr)
Other versions
EP1953102A1 (de
Inventor
Fransiscus Hermannus Feijen
Herman Sytema
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.)
Quadient Technologies France SA
Original Assignee
Neopost Technologies SA
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 Neopost Technologies SA filed Critical Neopost Technologies SA
Priority to EP07002072A priority Critical patent/EP1953102B1/de
Priority to US12/023,433 priority patent/US20080179816A1/en
Publication of EP1953102A1 publication Critical patent/EP1953102A1/de
Priority to US13/093,590 priority patent/US20110198799A1/en
Application granted granted Critical
Publication of EP1953102B1 publication Critical patent/EP1953102B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B65H3/02—Separating articles from piles using friction forces between articles and separator
    • B65H3/06—Rollers or like rotary separators
    • 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
    • B65H3/52—Friction retainers acting on under or rear side of article being separated
    • B65H3/5207—Non-driven retainers, e.g. movable retainers being moved by the motion of the article
    • B65H3/5215—Non-driven retainers, e.g. movable retainers being moved by the motion of the article the retainers positioned under articles separated from the top of the pile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/81—Rigidity; Stiffness; Elasticity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/19—Specific article or web
    • B65H2701/1916—Envelopes and articles of mail

Definitions

  • the invention relates to a separator for separating items from a stack.
  • separators for separating items in the form of sheets from a stack by bending sheets are described in European patent application 0 615 937 , U.S. patent 6 883 798 and Japanese patent application 632 888 41 .
  • a feeding roller is positioned relative to a sheet holder for contacting an outer sheet of a stack and for exerting a friction force onto the sheet for urging the sheet in a direction tangential to the circumference of the roller.
  • a deflecting surface is located spaced from the contact area in the tangential direction and extends at an angle to the sheet to be separated for deflecting a leading edge of the sheet in the separating position as it is urged past the deflecting surface.
  • the separation is enhanced by the stiffness of the sheets that refrains sheets from passing through the curved passage bound by the deflecting surface.
  • US 5277417 discloses a sheet-material transporting device including a separation roller which is rotated in a predetermined direction; and a retarding member having an opposing surface opposing the separation roller, and forming a sheet-material transport passage between the opposing surface and the separation roller.
  • the device is provided with a pressing member disposed in the opposing surface.
  • the pressing member has a pressing surface which projects from the opposing surface and has a coefficient of friction smaller than that of the opposing surface. The pressing surface of the pressing member is caused to retract from its projecting position in correspondence with the thickness of the sheet material inserted into the transport passage:
  • this object is achieved by providing a separator according to claim 1.
  • the feeding roller and deflection surface sections extending from both lateral edges of the feeding path inwardly contact the envelope to be separated in areas along opposite lateral side edges of the envelope.
  • the edge areas of the envelope, where the front and rear walls of the envelope are connected to each other, are the stiffest areas of the envelope and therefore have the greatest resistance against bending. Accordingly, by bending the envelope around the feeding roller in these areas, the greatest resistance against passing the deflection surface is caused, which is favorable for avoiding double feeds in which an outer envelope to be separated entrains a next envelope. Also, engaging the envelopes in an area where the bending stiffness is greatest makes the separation relatively insensitive to variations in bending stiffness between envelopes and proper adjustment of the deflecting surface.
  • the separator 1 is equipped with a holder 3 for holding a stack of envelopes 2 with an outer envelope 5 in a separating position, a feeding roller 4 and a deflecting surface 7.
  • the feeding roller 4 and the deflecting surface 7 bound a feeding path having a width, and starting at the separating position.
  • the holder 3 supports the stack 2 of envelopes to be separated.
  • the holder 3 has lateral guides 11 (not shown in Fig. 1 ) for maintaining the envelopes positioned by contacting lateral edges of the envelopes.
  • the guides 11 are adjustable in the lateral direction by rotating a threaded spindle 12, for adapting the mutual distance between the guides 11 to envelopes of different sizes. Stops 13 define the maximum outer position of the guides 11.
  • the stack of envelopes 2 is positioned with one edge against a front (downstream) wall of the holder 3 for aligning the envelopes in relation to the feeding roller 4 and the deflecting surface 7 And for refraining the envelopes form displacement in transport direction 6.
  • the holder 3 is may be positioned in an inclined orientation, such that the stack of envelopes is leans against the front wall of the holder by gravity.
  • the holder 3 is provided with a moveable bottom surface and with a biasing member (not shown) for urging the stack 2 against the feeding roller 4 while maintaining the outer envelope 5 generally in the separating plane 10.
  • the outer envelope 5 of the stack 2 is brought in a separating position in a separating plane 10 at the top of the stack 2, and is positioned with its leading edge 8 just above the front wall of the holder 3 and near the deflecting surface 7.
  • the feeding roller 4 has a circumference and is positioned relative to the holder 3 for contacting the envelope 5 in a contact area of its circumference.
  • the feeding roller 4 extends from beyond opposite lateral sides of the feeding path inwardly. It therefore contacts the envelope 5 in side areas 15, 16 along opposite side edges of the envelope 5.
  • the deflecting surface 7 Spaced from the contact position between feeding roller 4 and the envelope 5, the deflecting surface 7 is positioned, preferably as a continuation of the wall of the holder 3. As the feeding roller 4, the deflecting surface 7 extends in lateral direction from beyond the lateral sides of the feeding path inwardly across lateral outer portions of the feeding path.
  • the feeding roller 4 and the deflection surface 7 both extends continuously from one lateral side of the feeding path inwardly across the feeding path to the other, opposite lateral side of the feeding path.
  • feeding rollers 24 and deflection surfaces 27 of a separator 21 extend along outer zones of the feeding path only.
  • the feeding roller 4 is connected to a drive 9 for driving rotation of the roller 4 about a heart line thereof.
  • a friction force is exerted onto the outer envelope 5 and urges the envelope in a feeding direction 6 tangential to the circumference of the feeding roller 4 and parallel to the separating plane 10.
  • the feeding roller 4 For separating the envelope 5 from the stack 2, the feeding roller 4 is driven by the drive 9 in a sense of rotation indicated by an arrow 19, exerting a friction force onto the outer envelope 5 in the separating position in the feeding direction 6 tangential to the feeding roller 4 and parallel to the separating plane 10.
  • This causes the outer envelope 5 to be displaced in the separating plane 10 along the feeding path in the feeding direction 6 and causes the leading edge 8 of the envelope 5 to be urged against the deflecting surface 7 located downstream in the feeding direction 6 of the contact area of the circumference of the feeding roller 4. Accordingly, the outer envelope 5 encounters resistance depending on the bending stiffness of the envelope 5 and increasing as the envelope is bent.
  • the friction force exerted by the feeding roller 4 onto the envelope 5 causes the envelope to be urged along the deflecting surface 7, which causes the envelope to bend out of the separating plane 10 as it is urged along the deflecting surface 7.
  • the circumferential surface of the feeding roller 4 has a friction coefficient relative to paper that is larger than the friction between the envelope in the separating position and the next envelope in the stack of envelopes 2.
  • the maximum friction force exerted on the next envelope in the stack 2 is therefore lower than the maximum friction force the feeding roller 4 can exert on the outer envelope 5 and insufficient for overcoming the resistance encountered when urged against the deflecting surface 7.
  • the feeding roller 4 and the deflection surface 7 extend across the feeding path without interruption, the effect of engaging envelopes in areas along the side edges is achieved for envelopes of widely varying sizes and the bending stiffness of the envelopes is used over the entire width of the envelope.
  • the deflecting surface 7 extends at an angle to the separating plane.
  • the angle between the deflecting surface 7 and the separating plane is selected such that an outer envelope 5 entrained by the rotating feeding roller 4 is urged past the deflecting surface, whereas friction forces between envelopes, by which a next envelope is entrained are insufficient to overcome the resistance the next envelope encounters when it is deflected by the deflection surface.
  • the angle between the deflecting surface and the separating plane is preferably between 85 and 140° and more preferably between 110 and 130°.
  • the relatively stiff side edge areas of the envelopes engage different sections of the deflection surface.
  • the deflecting surface has a friction coefficient that is uniform across its width, the resistance encountered by envelopes being separated varies only little with width of the envelopes of the envelopes.
  • the bending distance that is the distance between the point of contact area of the circumference of the feeding roller 4 and the most remote point of contact between the envelope being separated and the deflecting surface 7, is preferably between 6 and 12 mm, and more preferably between 7,5 and 10,5 mm, for a feeding roller 4 having a diameter of 25 mm.
  • leading edge 8 of the envelope 5 is deflected out of the separating plane 10, the leading edge 8 is for example led into a nip of a transport track 14 formed by pairs of opposite conveyor belts.

Landscapes

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

Claims (4)

  1. Separator zum Separieren von Gegenständen von einem Stapel (2), umfassend:
    einen Halter (3) mit einer Stütze zum Halten des Stapels (2), wobei sich ein äußerer (5) der Gegenstände in einer Separationsposition in einer Separationsebene (10) befindet,
    zumindest eine Vorschubwalze (4; 24) mit einem Umfang und in einer Position relativ zu dem Halter (3) für den Kontakt mit dem Gegenstand (5) in der Separationsposition in einem Kontaktbereich ihres Umfangs und zum Ausüben einer Reibkraft auf den Gegenstand (5), um den Gegenstand in einer Richtung (6) tangential zu dem Umfang und parallel zu der Separationsebene (5) zu beaufschlagen;
    und wenigstens eine Umlenkfläche (7; 27), die in der tangentialen Richtung (6) von dem Kontaktbereich beabstandet ist, wobei sich die zumindest eine Umlenkfläche (7; 27) in einem Winkel zur Separationsebene (10) zumindest von einer Position in der Separationsebene (10) erstreckt, um die Vorderkante des Gegenstands (5) in der Separationsposition umzulenken, während dieser entlang der Separationsebene in der tangentialen Richtung beaufschlagt wird und sich entlang der zumindest einen Umlenkfläche (7; 27) bewegt;
    wobei die zumindest eine Vorschubwalze (4; 24) und die zumindest eine Umlenkfläche (7; 27) eine Vorschubbahn begrenzen, die an der Separationsposition beginnt, wobei die Vorschubbahn eine Breite hat;
    wobei die zumindest eine Umlenkfläche (7; 27) zwei Bereiche aufweist, die sich von oder von außerhalb gegenüberliegender lateraler Seiten der Vorschubbahn nach innen über zumindest laterale äußere Bereiche der Vorschubbahn erstrecken;
    dadurch gekennzeichnet, dass der Separator zum Separieren von Briefumschlägen von einem Stapel dient;
    wobei die zumindest eine Vorschubwalze (4; 24) zwei Bereiche aufweist, die sich von oder von außerhalb gegenüberliegender lateraler Seiten der Vorschubbahn nach innen über zumindest laterale äußere Bereiche der Vorschubbahn erstrecken, und wobei
    die Umlenkfläche (7; 27) über ihre Breite einen einheitlichen Reibungskoeffizienten aufweist.
  2. Separator nach Anspruch 1, wobei sich die zumindest eine Vorschubwalze (4) durchgehend über die Vorschubbahn erstreckt.
  3. Separator nach einem der vorhergehenden Ansprüche, wobei sich die zumindest eine Umlenkfläche (7) durchgehend über die Vorschubbahn erstreckt.
  4. Separator nach einem der vorhergehenden Ansprüche, wobei der Winkel zwischen der Umlenkfläche (7; 27) und der Separationsebene (10) zwischen 85 und 140° und vorzugsweise zwischen 110 und 130° beträgt.
EP07002072A 2007-01-31 2007-01-31 Vorrichtung zur Entnahme von Briefumschlägen eines Stapels Active EP1953102B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP07002072A EP1953102B1 (de) 2007-01-31 2007-01-31 Vorrichtung zur Entnahme von Briefumschlägen eines Stapels
US12/023,433 US20080179816A1 (en) 2007-01-31 2008-01-31 Separator for separating envelopes from a stack
US13/093,590 US20110198799A1 (en) 2007-01-31 2011-04-25 Separator for separating envelopes from a stack

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07002072A EP1953102B1 (de) 2007-01-31 2007-01-31 Vorrichtung zur Entnahme von Briefumschlägen eines Stapels

Publications (2)

Publication Number Publication Date
EP1953102A1 EP1953102A1 (de) 2008-08-06
EP1953102B1 true EP1953102B1 (de) 2011-06-08

Family

ID=38180504

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07002072A Active EP1953102B1 (de) 2007-01-31 2007-01-31 Vorrichtung zur Entnahme von Briefumschlägen eines Stapels

Country Status (2)

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US (2) US20080179816A1 (de)
EP (1) EP1953102B1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2123474B1 (de) 2008-05-20 2011-08-24 Neopost Technologies Verfahren und Vorrichtung zum Einlegen einer Postsendung in einen Umschlag
EP2123475B1 (de) 2008-05-20 2013-10-09 Neopost Technologies Verfahren und Vorrichtung zum Einlegen einer Postsendung in einen Umschlag und Befeuchten der Umschlagklappe
US8302957B2 (en) * 2009-02-25 2012-11-06 Eastman Kodak Company Motor inside pick-up roller
WO2014064622A1 (en) * 2012-10-23 2014-05-01 Neopost Technologies Spindle for linear actuators; slider slider for linear actuators; combination of a spindle and a slider for linear actuator linear; linear actuator comprising such combination; mail piece handling apparatus comprising such linear actuator

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59172339A (ja) * 1983-03-18 1984-09-29 Deyupuro Seizo Kk 給紙装置
JPS63288841A (ja) 1987-05-18 1988-11-25 Seiko Epson Corp 給紙装置における用紙の分離機構
JP2603302B2 (ja) * 1988-06-23 1997-04-23 キヤノン株式会社 シート給送装置
JPH03102032A (ja) * 1989-09-14 1991-04-26 Canon Inc シート給送装置
JP2936496B2 (ja) * 1990-08-28 1999-08-23 三田工業株式会社 画像生成機の給紙装置
JP2660181B2 (ja) 1991-04-09 1997-10-08 富士写真フイルム株式会社 シート材の自動供給装置
JP2621846B2 (ja) * 1992-02-14 1997-06-18 三田工業株式会社 給紙カセット
JPH07109037A (ja) 1993-03-15 1995-04-25 Nec Corp シートフィーダ
US5474288A (en) * 1994-07-21 1995-12-12 Lo; Thomas Y.-C. Sheet feeder for computer printer with paper release drag reduction to lengthen life of printer sheet input rollers
JP3731260B2 (ja) * 1996-09-06 2006-01-05 ブラザー工業株式会社 給紙装置及びそれを備える画像記録機
US6168150B1 (en) * 1996-12-25 2001-01-02 Minolta Co., Ltd. Sheet feeder unit
US5823695A (en) * 1997-04-10 1998-10-20 Eastman Kodak Company Imaging apparatus including a guide for guiding a receiver medium therethrough with reduced friction and a guide assembly method therefor
US5895040A (en) * 1997-06-20 1999-04-20 Lexmark International, Inc. Sheet separator
JPH11246064A (ja) * 1998-03-05 1999-09-14 Fuji Xerox Co Ltd 記録媒体給送装置
FR2782673B1 (fr) * 1998-09-02 2000-11-24 Neopost Ind Plieuse/insereuse a chemin d'encarts separe
TW528713B (en) 2002-01-23 2003-04-21 Benq Corp Paper separator structure
JP4006366B2 (ja) * 2003-07-02 2007-11-14 キヤノン株式会社 シート給送装置及び画像形成装置
US20060157911A1 (en) * 2004-11-24 2006-07-20 Hewlett-Packard Development Company, L.P. Sheet feed apparatus

Also Published As

Publication number Publication date
US20110198799A1 (en) 2011-08-18
US20080179816A1 (en) 2008-07-31
EP1953102A1 (de) 2008-08-06

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