US20060071398A1 - Device for separation and feeding of sheets of a recording carrier - Google Patents

Device for separation and feeding of sheets of a recording carrier Download PDF

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Publication number
US20060071398A1
US20060071398A1 US11/200,839 US20083905A US2006071398A1 US 20060071398 A1 US20060071398 A1 US 20060071398A1 US 20083905 A US20083905 A US 20083905A US 2006071398 A1 US2006071398 A1 US 2006071398A1
Authority
US
United States
Prior art keywords
arm
stack
slide
cassette
pusher
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.)
Abandoned
Application number
US11/200,839
Other languages
English (en)
Inventor
Ralf Koehler
Bernd Bantle
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.)
BDT AG
Original Assignee
BDT AG
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 BDT AG filed Critical BDT AG
Assigned to BDT AG reassignment BDT AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KOEHLER, RALF, BANTLE, BERND
Publication of US20060071398A1 publication Critical patent/US20060071398A1/en
Abandoned 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
    • B65H3/02—Separating articles from piles using friction forces between articles and separator
    • B65H3/06—Rollers or like rotary separators
    • B65H3/0684—Rollers or like rotary separators on moving support, e.g. pivoting, for bringing the roller or like rotary separator into contact with 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
    • B65H1/00—Supports or magazines for piles from which articles are to be separated
    • B65H1/04—Supports or magazines for piles from which articles are to be separated adapted to support articles substantially horizontally, e.g. for separation from top of pile

Definitions

  • the invention concerns a device for separation and feeding of sheets of a recording carrier.
  • a device of this type is known from DE 199 50 307 C1.
  • the sheets of the recording carrier are supplied in a cassette as an essentially horizontal stack.
  • the cassette is pushed into a receiving space, for example, of an office machine or sheet feeder for an office machine.
  • An advance head with a drivable advance roller lies on the stack, which pushes the uppermost sheet of the stack against a rising slope of the cassette, so that the front edge of the sheet runs up the slope and is separated from the next sheet of the stack.
  • the uppermost sheet so separated is then grasped by the transport device and fed to the office machine, for example, a printer, copier or the like.
  • the advance head is mounted on a free end of an arm, mounted to pivot on an inside wall of the receiving space and extending across the feed direction over the stack. The advance head can follow the diminishing height of the stack by means of the pivotable arm.
  • the arm with the advance head In order to be able to pull out the cassette from the receiving space and push it back into the receiving space, for example, when the cassette is changed or is to be loaded with a new stack of sheets, the arm with the advance head must be raised, so that the cassette can be pulled out beneath the advance head and, if necessary, pushed back in again with a new stack beneath the advance head.
  • the known device has a release mechanism with a lift lever. The lift lever is pivoted by the pushed-in cassette, so that it releases the arm and this can be lowered onto the stack. If the cassette is pulled out, it releases the lift lever and this is pivoted under the influence of a spring, so that it raises the arm with the advance head.
  • the release mechanism causes only lifting of the arm with the advance head upward. This lifting is not sufficient in those cases when the advance head is situated right against the slope of the cassette with the advance roller, on which the stack comes in contact with its front edge.
  • the underlying object of the invention is to improve a device of the type just mentioned, so that the arm with the advance head guarantees greater free space for removal and insertion of the cassette.
  • a device for separation and feeding of sheets of a recording carrier with a cassette insertable into a receiving space, which receives the sheets in an essentially horizontal stack and has a rising slope, on which the stack lies with its edge facing the free direction, with an arm mounted to pivot on an inside wall of the receiving space and protruding above the stack of the inserted cassette, with an advance head arranged on the free end of the arm, which can be lowered onto the stack by pivoting of the arm and raised from the stack, with at least one advance roller mounted in the advance head, which sits on the uppermost sheet of the stack when the advance head is lowered and can be driven, in order to push the uppermost sheet up for separation on the slope, and with a release mechanism that raises the arm from the stack when the cassette is moved from the receiving space, and which is operated by the cassette inserted into the receiving space, in order to release the arm for lowering onto the stack, wherein the arm is mounted to pivot on a slide that is arranged movable on the inside wall essentially parallel to the
  • the operating protrusion can be formed as a pin protruding from a cassette in the insertion direction, which acts on the slide and pusher via wedge surfaces.
  • the slide may have a passage opening for the pin, and a wedge surface can be formed in the passage opening, which the pin encounters during insertion into passage opening, in order to move the slide against the spring force.
  • the pin may have a conical tip that penetrates the operating opening and produces the wedge effect for movement of the pusher.
  • the operating opening can be formed in a thrust plate mounted to move on the slide, and which can be made to cover the passage opening of the slide, and the thrust plate can be connected to the pusher via a pivotable lever.
  • the lever can be designed as a two-arm lever and may convert the pushing path of the thrust plate to a larger pushing path of the pusher.
  • the arm together with a parallel rod, may form a parallel guide for the advance head, the parallel rod can be lengthened beyond its bearing on the slide, and the pusher may engage on this lengthened end of the parallel rod.
  • the lengthened end may pass through an elongated hole of the pusher, may be freely movable in this elongated hole in the release position and can be entrained by the end of the elongated hole when the pusher is moved into the position that raises the arm under the spring force.
  • the arm with advanced head is mounted to pivot on a slide guided on the inside wall of the receiving space, parallel to the surface of the stack.
  • a pusher is mounted on this slide, which engages on the arm, in order to raise it or release it for lowering.
  • the arm can therefore not only be raised upward by the slide, but can also be moved away from the slope by means of the slide.
  • the slide is then biased by spring force, so that it is moved away from the slope, and the pusher is biased by spring force, so that it raises the arm. If the cassette is pulled out from its operating position in the receiving space, the arm is raised, on the one hand, by the spring-loaded pusher, and moved away from the slope, on the other hand, by the spring-loaded slide.
  • the arm and the advance head come into a position on this account, in which they are reliably moved out fully from the movement path of the cassette and any sheet stack accommodate in the cassette. Unhampered pulling out and reinsertion of the cassette is possible.
  • the cassette has at least one operating protrusion, with which it engages with the release mechanism when the cassette is pushed into its operating position. The operating protrusion, in the first place, moves the slide against the slope, and, in the second place, moves the pusher against its spring load into the position, in which the pusher releases the arm for lowering.
  • the operating protrusion is preferably designed as a pin arranged on the outside of the cassette facing the insertion direction of the cassette and protrudes from the cassette in this insertion direction.
  • this pin penetrates into the slide, during which the axial penetration movement of the pin is converted via a wedge surface into the displacement movement of the slide against its spring bias.
  • the pin acts further during insertion via a wedge surface on the pusher, in order to move it against its spring force.
  • two separate operating protrusions for example, pins
  • the same pin is used, both for displacement of the slide and the pusher, during which this pin acts on the slide and pusher in succession during its axial movement.
  • the slide is movable on guide rods.
  • the slide For mounting on the guide rods, the slide has a certain material thickness.
  • the wedge surface is then expediently made on the slide, in which the wedge surface guarantees sufficient displacement movement of the slide, because of the material thickness.
  • a lever transmission is preferably used, so that a slight axial movement of the pin is converted to a larger displacement path of the pusher.
  • the wedge surface for conversion of the axial path of the pin to the displacement path can be designed for this purpose as a conical tip of the pin.
  • FIG. 1 schematically depicts the device with the cassette pulled out.
  • FIG. 2 schematically depicts the device with the cassette insert.
  • FIG. 3 shows the device with the cassette pulled out, in which only the pin for operation of the cassette is shown.
  • FIG. 4 shows a view corresponding to FIG. 3 during engagement of the pin in the release mechanism.
  • FIG. 5 shows a view corresponding to FIG. 3 with the completely inserted cassette.
  • FIG. 6 shows a view corresponding to FIG. 5 , in which the housing of the release mechanism is removed.
  • FIG. 7 shows the device in the position of FIG. 3 , viewed from the outside, in which the housing of the release mechanism is removed.
  • FIG. 8 shows the device in the position of FIG. 6 , viewed from the outside.
  • FIG. 9 schematically depicts a top view of the device with the cassette pulled out.
  • FIG. 10 shows a view corresponding to FIG. 9 , with the cassette insert.
  • FIG. 11 shows an outside view of operation of the pusher with the cassette pulled out.
  • FIG. 12 shows a front view of the device in the position of FIG. 11 .
  • FIG. 13 shows an outside view of operation of the pusher with the cassette inserted.
  • FIG. 14 shows a view corresponding to FIG. 12 , with the cassette inserted.
  • stack 10 In order to supply an office machine, for example, a printer, copier or the like, with sheets of a recorded carrier, for example, paper sheets, these sheets are supplied in stack 10 .
  • the stack 10 of sheets is accommodated essentially horizontally in a cassette 12 that is inserted into the receiving space of the device.
  • the receiving space can be formed in the office machine itself or in a separate sheet feeder that can be mounted or added on to the office machine. Only an inside wall 14 of the receiving space is shown in the drawing.
  • the cassette 12 has a slope 16 on its front side facing the feed direction of the sheets, which rises at an angle of about 20-25°, with reference to the vertical on the stack surface.
  • the stack 10 lies with its front edge facing the feed direction on this slope 16 .
  • An advance head 18 is positioned on the uppermost sheet of stack 10 , which engages frictionally with drivable advance rollers 20 on the uppermost sheet of stack 10 .
  • the driven advance rollers 20 push the uppermost sheet of stack 10 with its front edge against slope 16 , so that the front edge of the uppermost sheet rises on slope 16 and is separated from the next sheet of stack 10 , so that it can be fed separately to further transport to the office machine.
  • the advance head 18 is mounted on the free end of an arm 22 that is mounted to pivot on inside wall 14 in a pivot plane parallel to the plane of slope 16 . Since the arm 22 is freely pivotable, the advance head 18 lies freely on the uppermost sheet of stack 10 under the weight of the advance head 18 and arm 22 and can follow the changing height of stack 10 .
  • the advance rollers 20 are movable in the advance head 18 against a spring force in the plane of stack 10 . Owing to arrangement of arm 22 and advance head 18 and the spring bias of the advance rollers 20 , these advance rollers 20 lie on the front end of the uppermost sheet in the feed direction and lie against the slope 16 with a certain spring bias, when the advance rollers 20 are not driven.
  • FIGS. 1 and 2 the cassette 12 is pushed horizontally into the receiving space, perpendicular to inside wall 14 .
  • the arm 22 with advance head 18 must be raised from stack 12 and cassette 12 far enough, that sufficient free space for removal and insertion of the cassette is formed.
  • FIG. 1 shows the arm 22 raised in this way with advance head 18 , in which the cassette 12 is partially withdrawn.
  • FIG. 2 shows the completely inserted cassette 12 with the lowered arm 22 and the advance head 18 sitting on stack 10 . In the operating position depicted in FIG. 2 , the sheets can be removed separately from stack 10 and fed to the office machine.
  • arm 22 with advance head 18 , is raised automatically according to the invention, when the cassette 12 is removed from the receiving space, and lowered automatically onto stack 10 , when the cassette 12 is inserted into the receiving space.
  • a release mechanism is arranged on the inside wall of the receiving space.
  • the release mechanism is accommodated in a housing 24 , fastened with appropriate fastening devices 26 to the inside wall 14 of the receiving space.
  • a slide 28 guided to move on two guide bars 30 , is arranged on housing 24 .
  • the guide bars 30 are mounted parallel to each other and at a spacing in housing 24 , so that they run parallel to the inside wall 14 and parallel to the surface of stack 10 .
  • Tension springs 32 are fastened on one end to slide 28 and on the other end to housing 24 and pull the slide 28 on guide bars 30 in the direction pointing away from slope 16 .
  • the arm 22 is mounted to pivot on the surface of slide 28 facing the receiving space by means of an obliquely positioned bearing axis 34 , perpendicular to the pivot plane of arm 22 .
  • a parallel rod 36 is also arranged beneath arm 22 and parallel to it, which is mounted to pivot with a bearing 38 on slide 28 .
  • the parallel rod 36 is pivotable in the same pivot plane as arm 22 and forms, with arm 22 , a parallel guide lying in the pivot plane that causes the advance head 18 to be moved up and down parallel during pivoting of arm 22 .
  • the slide 28 has a passage opening 40 that passes through slide 28 , perpendicular to its plane, i.e., perpendicular to inside wall 14 .
  • the passage opening 40 is designed on its inside wall, directed against slope 16 with a wedge surface 42 , that is most clearly visible in the depiction of FIGS. 9 and 10 .
  • the wedge surface 42 is arranged perpendicular to the plane of stack 10 and sloped, so that the passage opening 40 tapers from its inlet side facing the receiving space for cassette 12 toward the side facing inside wall 14 .
  • a pusher 44 is arranged on the surface of slide 28 facing inside wall 14 , which is guided to move on this surface of slide 28 in the pivot plane of arm 22 and parallel rod 36 .
  • the pusher 44 has an elongated hole 46 running in its displacement direction, which is penetrated by an end 48 of parallel rod 36 , lengthened beyond bearing 38 .
  • a tension spring 50 engages, whose other end is fastened to slide 28 .
  • the tension spring 50 pulls the pusher 44 into its lower end position.
  • one arm of a two-arm lever, mounted to pivot on slide 28 is connected.
  • the other arm of lever 52 is connected to a thrust plate 54 , guided to move parallel to pusher 44 on the surface of slide 28 .
  • the thrust plate 54 has continuous operating openings 56 , perpendicular to the plane of slide 28 , which can be brought to cover the outlet side of passage opening 40 facing the inside wall 14 .
  • Cassette 12 has, on its outside, which faces the inside wall 14 during insertion of cassette 12 into the receiving space, a pin 58 that protrudes in the insertion direction.
  • the pin is designed essentially cylindrical and has a conically rounded tip 60 .
  • the device assumes the position depicted in FIGS. 3, 7 , 9 , 11 and 12 .
  • the slide 28 is pulled by tension springs 32 on guide rods 30 in the direction opposite the sheet feed direction. Because of this, the arm 22 and advance head 18 mounted on slide 28 are pulled away from slope 16 .
  • the tension spring 50 pulls the pusher 44 downward.
  • the end 48 of the parallel rod 36 reaches the upper end of elongated hole 46 and is entrained by the pusher 44 and pulled downward.
  • the parallel rod 36 , and with it arm 22 are pivoted up, so that the advance head 18 is raised.
  • a cassette 12 possibly with stack 10 , can now be pulled out unhampered from the receiving space by arm 22 with advance head 18 , or inserted into the receiving space.
  • the pin 58 If the cassette 12 is pushed further into the receiving space from the position depicted in FIGS. 3, 7 and 9 , the pin 58 , with its tip 60 , initially reaches passage opening 40 through an opening 62 of housing 24 . Since the slide 28 is retracted by the tension springs 32 , the tip 60 of pin 58 encounters the sloped wedge surface 42 . On further insertion of pin 58 into the passage opening 40 , the tip 60 of pin 58 presses against the wedge surface 42 and, in so doing, pushes the slide 28 against the force of tension springs 32 , so that the arm 22 mounted on the slide 28 is moved with the advance head 18 against the slope 16 . This position is shown in FIG. 4 .
  • the thrust plate 54 has pushed slide 54 upward against the force of tension spring 50 via lever 52 , and the elongated hole 46 is also pushed upward on this account, so that the end 48 of parallel rod 36 can now move freely in elongated hole 46 .
  • the arm 22 with the advance head 18 , can now be lowered onto stack 10 of the cassette, freely pivotable under its own weight.
  • advance rollers 20 If, during lowering of advance head 18 , its advance rollers 20 come in contact with the slope 16 and cassette 12 , the advance rollers 20 roll along this slope 16 , until they lie on the uppermost sheet of stack 10 . In this case, a bias of the springs, acting on the advance rollers 20 in advance had 18 , is produced.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
US11/200,839 2004-08-10 2005-08-10 Device for separation and feeding of sheets of a recording carrier Abandoned US20060071398A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004038971A DE102004038971B3 (de) 2004-08-10 2004-08-10 Vorrichtung zum Vereinzeln und Zuführen von Blättern eines Aufzeichnungsträgers
DE102004038971.3 2004-08-10

Publications (1)

Publication Number Publication Date
US20060071398A1 true US20060071398A1 (en) 2006-04-06

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Application Number Title Priority Date Filing Date
US11/200,839 Abandoned US20060071398A1 (en) 2004-08-10 2005-08-10 Device for separation and feeding of sheets of a recording carrier

Country Status (4)

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US (1) US20060071398A1 (de)
JP (1) JP2006052090A (de)
CN (1) CN100379662C (de)
DE (1) DE102004038971B3 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080224380A1 (en) * 2007-03-14 2008-09-18 Yraceburu Robert M Media pick assembly with motorized carriage
US20090302525A1 (en) * 2006-02-04 2009-12-10 Machine Shop Special Effects Limited Discharge of paper or other leaves from a stack

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007018398A1 (de) 2007-04-17 2008-10-23 Bdt Ag Blattvereinzelungssystem, Blatthandhabungssystem und Verfahren zum reibschlüssigen Reparieren und Fördern von Blättern
CN107248198A (zh) * 2016-11-11 2017-10-13 深圳怡化电脑股份有限公司 一种票箱结构
CN115092749A (zh) * 2022-07-13 2022-09-23 台州亚泰包装有限公司 单工位裱纸机

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5501444A (en) * 1993-01-18 1996-03-26 Canon Kabushiki Kaisha Sheet supply apparatus
US5622364A (en) * 1996-03-27 1997-04-22 Lexmark International, Inc. Apparatus and method of determining a media level in a supply tray
US5899450A (en) * 1996-05-02 1999-05-04 Lexmark International, Inc. Sheet separator dam with inset friction element
US6139007A (en) * 1999-10-22 2000-10-31 Lexmark International, Inc. Sheet separator dam with buckling element
US6299157B1 (en) * 1999-01-25 2001-10-09 Samsung Electronics Co., Ltd. Paper feeding apparatus for printing apparatus
US6318715B1 (en) * 1999-10-19 2001-11-20 Bdt Buro-Und Datentechnik Gmbh & Co. Kg Device for separating sheets of a recording medium
US6382619B1 (en) * 2000-04-19 2002-05-07 Hewlett-Packard Company Pick mechanism and image forming device including the same
US6648322B2 (en) * 2001-10-11 2003-11-18 Samsung Electronics Co., Ltd. Paper feeding device for printer
US6724506B1 (en) * 2000-11-28 2004-04-20 Aetas Technology, Incorporated Method and apparatus for measuring and indicating paper level in a sheet-feeding device
US20040207145A1 (en) * 2003-04-15 2004-10-21 Samsung Electronics Co., Ltd. Paper-feeding apparatus of an image forming apparatus
US6969058B2 (en) * 2001-06-13 2005-11-29 Hewlett-Packard Development Company, L.P. Replaceable roller bogie for document feeding apparatus
US7258335B2 (en) * 2004-08-24 2007-08-21 Lexmark International, Inc. Eliminating drag of media sensor in printer media transport

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4356213B2 (ja) * 2000-08-10 2009-11-04 ブラザー工業株式会社 給紙装置
DE10147410B4 (de) * 2001-09-26 2005-08-18 Helmut Steinhilber Verfahren und Vorrichtung zum Vereinzeln von Blättern von einem Stapel

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5501444A (en) * 1993-01-18 1996-03-26 Canon Kabushiki Kaisha Sheet supply apparatus
US5622364A (en) * 1996-03-27 1997-04-22 Lexmark International, Inc. Apparatus and method of determining a media level in a supply tray
US5899450A (en) * 1996-05-02 1999-05-04 Lexmark International, Inc. Sheet separator dam with inset friction element
US6299157B1 (en) * 1999-01-25 2001-10-09 Samsung Electronics Co., Ltd. Paper feeding apparatus for printing apparatus
US6318715B1 (en) * 1999-10-19 2001-11-20 Bdt Buro-Und Datentechnik Gmbh & Co. Kg Device for separating sheets of a recording medium
US6139007A (en) * 1999-10-22 2000-10-31 Lexmark International, Inc. Sheet separator dam with buckling element
US6382619B1 (en) * 2000-04-19 2002-05-07 Hewlett-Packard Company Pick mechanism and image forming device including the same
US6724506B1 (en) * 2000-11-28 2004-04-20 Aetas Technology, Incorporated Method and apparatus for measuring and indicating paper level in a sheet-feeding device
US6969058B2 (en) * 2001-06-13 2005-11-29 Hewlett-Packard Development Company, L.P. Replaceable roller bogie for document feeding apparatus
US6648322B2 (en) * 2001-10-11 2003-11-18 Samsung Electronics Co., Ltd. Paper feeding device for printer
US20040207145A1 (en) * 2003-04-15 2004-10-21 Samsung Electronics Co., Ltd. Paper-feeding apparatus of an image forming apparatus
US7258335B2 (en) * 2004-08-24 2007-08-21 Lexmark International, Inc. Eliminating drag of media sensor in printer media transport

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090302525A1 (en) * 2006-02-04 2009-12-10 Machine Shop Special Effects Limited Discharge of paper or other leaves from a stack
US20080224380A1 (en) * 2007-03-14 2008-09-18 Yraceburu Robert M Media pick assembly with motorized carriage

Also Published As

Publication number Publication date
CN1733581A (zh) 2006-02-15
DE102004038971B3 (de) 2005-10-13
CN100379662C (zh) 2008-04-09
JP2006052090A (ja) 2006-02-23

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AS Assignment

Owner name: BDT AG, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KOEHLER, RALF;BANTLE, BERND;REEL/FRAME:016843/0972;SIGNING DATES FROM 20050808 TO 20050829

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION