EP1127818A2 - Dispositif de séparation d'une feuille au sommet d'une pile de réserve à l'aide de moyens de soufflage d'air - Google Patents

Dispositif de séparation d'une feuille au sommet d'une pile de réserve à l'aide de moyens de soufflage d'air Download PDF

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Publication number
EP1127818A2
EP1127818A2 EP20010101676 EP01101676A EP1127818A2 EP 1127818 A2 EP1127818 A2 EP 1127818A2 EP 20010101676 EP20010101676 EP 20010101676 EP 01101676 A EP01101676 A EP 01101676A EP 1127818 A2 EP1127818 A2 EP 1127818A2
Authority
EP
European Patent Office
Prior art keywords
air
sheet
air blowing
blowing agent
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.)
Withdrawn
Application number
EP20010101676
Other languages
German (de)
English (en)
Other versions
EP1127818A3 (fr
Inventor
Ralf Allner
Thomas Biber
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.)
Eastman Kodak Co
Original Assignee
NexPress Solutions LLC
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 NexPress Solutions LLC filed Critical NexPress Solutions LLC
Publication of EP1127818A2 publication Critical patent/EP1127818A2/fr
Publication of EP1127818A3 publication Critical patent/EP1127818A3/fr
Withdrawn legal-status Critical Current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
    • B65H3/46—Supplementary devices or measures to assist separation or prevent double feed
    • B65H3/48—Air blast acting on edges of, or under, articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/42—Piling, depiling, handling piles
    • B65H2301/423—Depiling; Separating articles from a pile
    • B65H2301/4232—Depiling; Separating articles from a pile of horizontal or inclined articles, i.e. wherein articles support fully or in part the mass of other articles in the piles
    • B65H2301/42324—Depiling; Separating articles from a pile of horizontal or inclined articles, i.e. wherein articles support fully or in part the mass of other articles in the piles from 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
    • B65H2406/00—Means using fluid
    • B65H2406/10—Means using fluid made only for exhausting gaseous medium
    • B65H2406/12—Means using fluid made only for exhausting gaseous medium producing gas blast
    • B65H2406/122—Nozzles

Definitions

  • the invention relates to a device for separating a top sheet from a supply stack with air blowing agents in the area of a vacuum a sheet transport unit having sheet arching means for the purpose of detecting the separated top sheet and feeding to a processing station in one Sheet processing device.
  • Air nozzle and the second air blowing means With several on both sides of the center line and of the first air blower arranged air jets, air jets low air pressure as well as with different orientations and diameters on the one hand to fan out by lifting several sheets of the upper one Sheet stack area and on the other hand for separation by lifting the top one Sheet from the stack and to hold back the top sheet subsequent adhering sheet generated.
  • a device of the type mentioned at the outset for separating by lifting an uppermost sheet from a supply stack in a copier in which on the one hand a first air blowing agent applied centrally to the sheet stack and to the sheet transport path with a single one relative large trapezoidal opening (7.62x6.35 mm to 15.24x 19.90 mm) having an air nozzle and, on the other hand, a second air blowing agent offset in the sheet transport direction, each with three air nozzles arranged on both sides of the center line of the transport path, each with a relatively large semicircular opening (7.87 to 24.65 mm 2 ) are arranged.
  • the orientation of the air jets to the horizontal position plane of the sheets in the direction towards the upper area of the sheet stack lies for the air jet of the first air blowing agent and for the air jets of the second air blowing agent in an angular range between 25 and 35 degrees.
  • the air pressure of the air jets is approximately 30 mbar and is generated by one or two controllable compressed air sources at the air nozzles of the air blowing agent and kept constant during an operating cycle.
  • the disadvantage here is that due to the large air nozzle openings and slight overpressure of the air jets a top sheet when using a heavy, thick or strongly adhering sheet / paper type difficult or cannot be separated from the stack and transported away individually. So is the range of usable sheet / paper grades for safe working, i.e., Safe separation and avoidance of double sheet transport, strong limited.
  • the invention is therefore based on the object of a device at the outset to create the type mentioned, which does not have these disadvantages mentioned, but using the leaves of different types one after the other reliably and efficiently can be fed from the sheet supply stack to a sheet processing device.
  • a device solved that an additional, powered by a high pressure air source, several Air-blowing agent having air nozzles in the region of the center line of the stack and the Transport path is arranged by means of air jets with a high Air pressure and small diameter can be generated, which on the one hand Separate the top sheet from the stack and hold back the top sheet Support the sheet of subsequent adhering sheet and on the other hand the Supports fanning the sheets at the top of the sheet stack serve.
  • additional air blowing means air jets with an air pressure equal to or greater than 1.0 bar can be generated; assign the air jets of the additional air blowing agent that of the fanning and separating air blowing agents have a pressure ratio equal to or greater than 20: 1; and stand the air nozzle opening diameter of the additional Air blowing agents in relation to those of the fan and separating air blowing agents equal to or greater than 1:30.
  • the air pressure of the air jets of the additional Air blowing agent is essentially constant during an operating cycle, and the air jets of the additional air blowing agent act simultaneously with the one constant air pressure of the fan air blowers and Release blowing agent on the sheets of the upper sheet stack area.
  • the additional air blowing means advantageously has two Nozzle elements with several air nozzles and are the nozzle elements on both sides of the air blowing agent for fanning out, a first air blowing agent, and on the outside inner air nozzles of the air blowing agent for separation and retention, one second air blowing agent.
  • the additional, third air blowing agent has on the two nozzle elements, two air nozzles in a vertical superimposed arrangement, with the upper air nozzles on one middle leading edge area of the second and third sheets of the stack Separate and retain the one that adheres to the top stack second sheet are aligned and the lower air vents to support the Fanning and lifting the leaves underneath on their middle Leading edge area are aligned.
  • the air nozzles of the additional air blowing means are advantageously so that their air jets parallel to the horizontal plane of the leaves of the Stack and parallel to the center axis of the stack and the sheet transport path aligned.
  • Figure 1 to 5 refers to a preferred Embodiment of the device according to the invention for separating a top sheet from a stack of air bubbles.
  • the device is in a sheet processing device of known type, such as Example of a copier used.
  • inventive device also in sheet processing devices, such as printers, Printer or sheet sorting devices can be used.
  • the separating device 1 according to the invention is in the region of an agent a magazine 2 held sheet stack S and in the sheet inlet area 9th the otherwise not shown copier shown.
  • the device 1 according to the invention is a commonly used one above of the sheet supply stack arranged sheet transport unit 4 in FIGS. 1 and 4 omitted.
  • FIGS. 1 and 4 show air blowing means 3.1; 3.2, 3.3 of the invention Device 1 for separating a top sheet S1 from a supply stack S. in the area of the sheet inlet 9 and below the sheet transport unit shown in FIGS. 2 and 3 4 of the device.
  • first air blowing means 3.1 for fanning several sheets one upper sheet stack area SR and second air blowing means 3.2 for separating the top sheet S1 and retention of one following the top sheet, adhered sheet S2 downstream of the supply stack, across a sheet transport path 42 arranged in an air nozzle holder 10 which is opposite to a sheet transport direction T act on the upper area SR of the sheet stack S.
  • Means that of a common one, shown schematically in Fig. 3, one low air pressure having compressed air source 6 fed first and second air blowing means 3.1; 3.2 are air jets with low different Pressures (approx. 10-50mbar), different orientations and diameters can be generated (see FIGS.
  • the first air blowing means 3.1 an in Area of a center line Y; Z of the stack S and the transport path 42 Air nozzle 31 and on the other hand, the second air blowing means 3.2 several on both sides of the Has center line arranged air nozzles 32.
  • the first and second air blowing means 3.1; 3.2 are connected via an air line 60 to the low-pressure air source 6 and the third, additional air blowing agent 3.3 is via its connecting piece 34.1; 34.2 (see Fig. 5) and air line 70 connected to the high pressure air source 7.
  • Additional air blowing means 3.3 are air jets ST with an air overpressure of 1.0 bar or more can be generated; and point the air jets of the additional air blowing agent 3.3 to those of the first / fan and second / separating air blowing agent 3.1; 3.2 a pressure ratio equal to or greater than 20: 1.
  • the sheet stack S in the magazine 2 is on a lifting platform 50 a conventional, sensor-controlled lifting device 5, not shown further arranged and with its upper sheet stack area SR depending on the Sheet stack height automatically to a predetermined level by means of the lifting device 5 same altitude to the blowing agent 3.1; 3.2; 3.3 positionable.
  • the sheet stack magazine 2 has a front stop 20, a back stop 21 and two Side stops 22 for centering and lateral guidance of the sheet stack S. its lifting movement, with the front stop 20 in the upper sheet stack area SR breakthroughs as a passage for the air jets of the air blowing agent 3.1; 3.2; 3.3 are arranged, and all stops are fixed in a predetermined height (see Figs. 3 and 4).
  • the generally known sheet transport device 4 shown in FIGS. 2 and 3 has, on the one hand for the purpose of detecting the uppermost separated by means of the air blowing means Sheet S1 and feeding to a conventional, not shown processing station of the Kopierers, a perforated with air passage holes 43 in the transport direction T revolving transport belt 40 with an integrated vacuum working formed as a suction container 46 suction device 46, and on the other hand has Sheet arching means 41 in the area of the sheet transport center axis or the center line Z the sheet transport path 42.
  • the leaf arching means 41 are axially centered on Outer circumference of drive roller 44 and deflection roller 45 of the sheet transport belt 40 as radially outward towards the top of the sheet stack protruding bead 41 arranged.
  • the sheet transport device 4 is as from the Known in the art, with the underside of their arching means 41 or their Sheet transport belt in a known manner to the top of the sheet stack spaced.
  • the sheet transport device 4 and the air blowing means 3.1; 3.2; 3.3 are, as in Fig. 1, 2 and 4, downstream in the sheet inlet area 9 of the lower and downstream sheet transport rollers 91, 92 downstream, the lower transport roller 91 is mounted on the air nozzle holder 10.
  • the first air blowing means 3.1 for fanning the sheet stack S contains, as in FIG. 1 to 4, an air nozzle body arranged centered on the center line Z. 30 with an air nozzle 31 with a relatively large trapezoidal opening 31.
  • the air nozzles 31, 32 of the first and second air blowing means 3.1; 3.2 and thus their Air jets are, on the one hand, in a plan view according to FIG. 4, parallel to the center line Z the sheet transport path 42 or perpendicular to the front of the sheet stack and on the other hand, in a side view according to FIG. 3, at an angle of approximately 20-35 ° to horizontal position level of the stacking sheets S rising to the upper area SR of the sheet stack S aligned.
  • the third, additional air blowing means 3.3 has two Nozzle elements 33.1; 33.2 with several air nozzles D1, D1 '; D2, D2 'on that on both sides of the first (fan) air blowing agent 3.1 and on the outside to the inside or to the air nozzles 32 of the second (separating) line lying in the region of the center line Z Air blowing means 3.2 are positioned.
  • Each of the two nozzle elements 33.1; 33.2 of the additional, third air blowing agent 3.3 has two air nozzles D1, D1 '; D2, D2 'in a vertical superimposed arrangement on, the upper air nozzles D1, D1 'with their Air jets on a central leading edge area of the second and third sheets of the sheet stack S for the purpose of separating and retaining the top stack sheet S1 subsequent adhering second sheet S2 are aligned, and the lower Air nozzles D2, D2 'with their air jets to support the fan and Raising the sheets underneath on their central leading edge area Y; Z are aligned.
  • the upper air nozzles D1, D1 'of the two nozzle elements 33.1; 33.2 are about how 2 and 3, approximately at the level of the upper edge of air nozzle openings 32 of the air blowing agent 3.2 for separating and above to the upper edge of the Air nozzle opening 31 of the air blowing means 3.1 arranged for fanning, and the two lower air nozzles D2, D2 'of the two nozzle elements 33.1; 33.2 are in approximately at the center of the air nozzle opening 31 of the air blowing agent 3.1 Fanned arranged.
  • the air nozzles D1, D1 '; D2, D2 'of the additional third air blowing means 3.3 on the one hand an opening diameter equal to or less than 0.5mm; and on the other hand, the opening diameter of the air nozzles of the additional Air blowing agent to those of the fan 3.1 and separation air blowing agent 3.2 in one Ratio equal to or greater than 1:20 (see Fig. 3 to 5).
  • the pressure of the air jets ST is additional, third air blowing means 3.3 during one by means of the control unit 8 controlled operating cycle essentially constant.
  • the air jets ST of the Additional air blowing agent 3.3 act simultaneously with the one constant air pressure air jets 31; 32 of the fan blowing agents 3.1 and release air blowing agent 3.2 on the sheets of the upper sheet stack area SR on.
  • the air pressure is Air jets ST of the additional air blowing agent 3.3 during the operating cycle controllable pulsating.
  • the sheets in the upper sheet stacking area SR become Y in the vertical direction slightly raised and fanned out, these fanned leaves on Support the backstop 21 of the magazine 2 (see Fig. 1).
  • the top two sheets of the sheet stacks S1 and S2 become something compared to the following ones more raised or fanned out (see Fig. 3).
  • the sheet transport unit 4 turned on, i.e., a common one, not shown vacuum generator of the sheet suction device 46 and a conventional, not Drive unit shown on the drive roller 44 of the conveyor belt 40 switched on.
  • the sheet suction device 46 and the transport belt drive unit the sheet transport unit 4 is switched off and the further transport of the first sheet S1 into the device interior from the transport rollers 91; 92 in Inlet area 9 of the device is adopted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
EP01101676A 2000-02-25 2001-01-30 Dispositif de séparation d'une feuille au sommet d'une pile de réserve à l'aide de moyens de soufflage d'air Withdrawn EP1127818A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2000108909 DE10008909B4 (de) 2000-02-25 2000-02-25 Vorrichtung zum Separieren eines obersten Blattes von einem Vorratsstapel mittels Luftblasmitteln
DE10008909 2000-02-25

Publications (2)

Publication Number Publication Date
EP1127818A2 true EP1127818A2 (fr) 2001-08-29
EP1127818A3 EP1127818A3 (fr) 2003-01-02

Family

ID=7632407

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01101676A Withdrawn EP1127818A3 (fr) 2000-02-25 2001-01-30 Dispositif de séparation d'une feuille au sommet d'une pile de réserve à l'aide de moyens de soufflage d'air

Country Status (3)

Country Link
EP (1) EP1127818A3 (fr)
JP (1) JP4584475B2 (fr)
DE (1) DE10008909B4 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1197450A2 (fr) * 2000-10-14 2002-04-17 Heidelberger Druckmaschinen Aktiengesellschaft Commande d'un couteau à air pulsé pour un mécanisme d'alimentation au moyen d'une bande sous vide
CN105173802A (zh) * 2015-09-30 2015-12-23 广州联科自动化设备有限公司 柔性铁氟龙布分离机构
CN108861693A (zh) * 2017-05-09 2018-11-23 柯尼卡美能达株式会社 供纸装置以及图像形成装置
CN114620281A (zh) * 2022-04-13 2022-06-14 浏阳市颐和隆烟花集团有限公司 一种围招上纸机构

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7458570B2 (en) * 2004-09-13 2008-12-02 Ricoh Printing Systems, Ltd. Sheet-supplying device
DE102005021189A1 (de) * 2005-05-03 2006-11-16 Eastman Kodak Co. Vorrichtung zur Unterbringung, vorzugsweise zur Bereitstellung, eines Stapels von Bögen
JP4760309B2 (ja) * 2005-11-02 2011-08-31 富士ゼロックス株式会社 シート供給装置及び画像形成装置
JP4561861B2 (ja) * 2008-04-04 2010-10-13 富士ゼロックス株式会社 シート供給装置及び画像形成装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4184672A (en) * 1976-10-05 1980-01-22 H.T.B. Limited Control means for the supply of operating mediums and sheet feeding machines having the same
US4699369A (en) * 1986-06-27 1987-10-13 Xerox Corporation Front air knife improvement for a top vacuum corrugation feeder
EP0453835A2 (fr) * 1990-04-27 1991-10-30 Heidelberger Druckmaschinen Aktiengesellschaft Margeur pour une machine consommant des feuilles de papier
EP0612680A1 (fr) * 1993-02-25 1994-08-31 Eastman Kodak Company Alimentation de feuilles réceptrices et appareil d'alimentation

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2646332B2 (ja) * 1993-10-13 1997-08-27 株式会社エスケイセールス 印刷物自動供給装置
JPH09118446A (ja) * 1995-08-10 1997-05-06 Eastman Kodak Co 上部供給形吸引式波形フィーダにおけるタブ付シートの取扱を容易にする装置
JPH11334912A (ja) * 1998-05-26 1999-12-07 Nok Corp シート状部品の分離装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4184672A (en) * 1976-10-05 1980-01-22 H.T.B. Limited Control means for the supply of operating mediums and sheet feeding machines having the same
US4699369A (en) * 1986-06-27 1987-10-13 Xerox Corporation Front air knife improvement for a top vacuum corrugation feeder
EP0453835A2 (fr) * 1990-04-27 1991-10-30 Heidelberger Druckmaschinen Aktiengesellschaft Margeur pour une machine consommant des feuilles de papier
EP0612680A1 (fr) * 1993-02-25 1994-08-31 Eastman Kodak Company Alimentation de feuilles réceptrices et appareil d'alimentation

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1197450A2 (fr) * 2000-10-14 2002-04-17 Heidelberger Druckmaschinen Aktiengesellschaft Commande d'un couteau à air pulsé pour un mécanisme d'alimentation au moyen d'une bande sous vide
EP1197450A3 (fr) * 2000-10-14 2003-11-26 Heidelberger Druckmaschinen Aktiengesellschaft Commande d'un couteau à air pulsé pour un mécanisme d'alimentation au moyen d'une bande sous vide
US7007944B1 (en) 2000-10-14 2006-03-07 Eastman Kodak Company Pulsed airknife control for a vacuum corrugated feed supply
CN105173802A (zh) * 2015-09-30 2015-12-23 广州联科自动化设备有限公司 柔性铁氟龙布分离机构
CN108861693A (zh) * 2017-05-09 2018-11-23 柯尼卡美能达株式会社 供纸装置以及图像形成装置
CN108861693B (zh) * 2017-05-09 2020-03-06 柯尼卡美能达株式会社 供纸装置以及图像形成装置
CN114620281A (zh) * 2022-04-13 2022-06-14 浏阳市颐和隆烟花集团有限公司 一种围招上纸机构
CN114620281B (zh) * 2022-04-13 2024-03-01 浏阳市颐和隆烟花集团有限公司 一种围招上纸机构

Also Published As

Publication number Publication date
JP4584475B2 (ja) 2010-11-24
JP2001287844A (ja) 2001-10-16
DE10008909A1 (de) 2001-08-30
EP1127818A3 (fr) 2003-01-02
DE10008909B4 (de) 2011-05-12

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