US2819076A - Paper-handling apparatus - Google Patents

Paper-handling apparatus Download PDF

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Publication number
US2819076A
US2819076A US504708A US50470855A US2819076A US 2819076 A US2819076 A US 2819076A US 504708 A US504708 A US 504708A US 50470855 A US50470855 A US 50470855A US 2819076 A US2819076 A US 2819076A
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US
United States
Prior art keywords
stack
sheet
sheets
cylinders
drum
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
US504708A
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English (en)
Inventor
Paul H Wendt
Kenneth R Eldredge
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Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to US504708A priority Critical patent/US2819076A/en
Priority to DEW18231A priority patent/DE1113942B/de
Priority to FR1145285D priority patent/FR1145285A/fr
Application granted granted Critical
Publication of US2819076A publication Critical patent/US2819076A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • 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
    • B65H3/10—Suction rollers
    • 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
    • B65H3/14—Air blasts producing partial vacuum

Definitions

  • This invention relates to paper-handling machinery and, more particularly, is an improved apparatus for separating single sheets from a stack.
  • An object of the present invention is to provide improved apparatus for separating single sheets from a stack.
  • a further object of the present invention is to provide apparatus which only picks up one sheet at a time.
  • Still another object of the present invention is to provide apparatus which can separate sheets from a stack singly and at a high speed.
  • One end of the suction nozzle is positioned adjacent the forward portion of a top sheet of a stack.
  • the suction causes such forward portion of the top sheet to be drawn up toward the rotating cylinders.
  • the fingers which extend beyond the periphery of the cylinders prevent such sheet from being moved by the rotating cylinders.
  • the fingers When it is desired to advance the top sheet the fingers are withdrawn into the suction nozzle. This enables the sheet to be pulled against the surface of the cylinders.
  • the cylinder surfaces are ridged to increase the friction between the sheet and the surface. Accordingly, the sheet is moved away from the stack by the rotating cylinders to other handling apparatus which can then process it as desired.
  • Means are provided to prevent more than one sheet from being conveyed by the drum. Further means are provided to facilitate the removal of the top sheet of the stack from the remainder of the stack.
  • Figure 1 is a plan view of the apparatus employing this invention
  • Figure 2 is a side view of the drawing shown in Figure 1;
  • FIG. 3 is a section along the line 3--3 of Figure 2 and shows details of an embodiment of the invention
  • Figure 4 is a section along the line 4--4 of Figure 3 2,819,076 Patented Jan. 7, 1958 showing the placement of the vacuum nozzle between the cylinders;
  • Figure 5 shows the vacuum nozzles which are employed in the present invention.
  • Figure 6 illustrates the apparatus employed to insure that only a single sheet is removed at a time from the stack.
  • a stack of sheets 10 which are to be separated in a sequence of one sheet at a time are placed upward against what can be considered as a separating drum 12 which is comprised of three spaced cylinders.
  • the stack is urged against the drum by virtue of two vibrator belts 14, 14 and a retating belt 16.
  • a box 18 having perforations therein which open onto the top sheet of the stack 10 is ernployed to facilitate the removal of the top sheet.
  • Compressed air is fed into the box from a source, not shown, which passes through and around the top sheet to literally float it on a cushion of air away from the sheet beneath it.
  • a mechanism 20 is provided on one side of the sheets which prevents more than one sheet from being drawn upward by the vacuum provided by the nozzles 22 which extend into slots in the drum 12.
  • a belt 24 passes over the removing drum and in combination with another drum 26 and belt 28 supports the top sheet of the stack which has been removed and conveys it to paper-processing apparatus 38.
  • the drum 32 and rollers 34, 36, 33, 44 42, and 44 all serve to maintain the two belts 24 and 28 tightly pressed against one another so that the sheets are firmly held therebetween.
  • an electric motor 46 drives the cylinders which help to maintain the belt stretched and the appara tus moving.
  • a pressure pump 48 and a vacuum pump 50 are required and are driven from a suitable motor 52.
  • Control apparatus 54 for varying the speed of operation to adesired value are represented by the panel and controls 54. Also shown are the stop-start buttons 5'6 for the entire apparatus.
  • a drum 12 may either be considered as being made up of three spaced apart discs or cylinders 60, 62, 64 which are mounted on a shaft 66 to be rotatable therewith or alternatively this may be considered as a cylindrical drum which has had diametrical grooves machined therein.
  • a vacuum nozzle 22 has a double terminal portion 70, 72, each of which is inserted in the space between the cylinders 6t], 52, 64, in the manner shown in Figure 4. The vacuum is applied to the suction nozzles of the vacuum pump Sit. The terminations of the nozzle are just below the periphery of the cylinders.
  • the vacuum nozzle is positioned with one end over the portion of the stack at which it is desired to pick up a sheet.
  • the nozzle terminates at a point where the leading edge of the sheet has already been grasped between the two belts 28, 24'.
  • Extending through the openings in the suction nozzle are two fingers 76, 78. These fingers are movable and are supported from push rods 80, 82. These push rods are supported in a bearing 84, 86, which extends through one side of each nozzle.
  • the push rods each terminate in a motor member 90.
  • the end of each push rod has a piston head 92.
  • a spring 96 urges the fingers to extend beyond the periphery of the cylinders. This prevents the top sheet of a stack, which is caused to adhere to these fingers by reason of the suction from the nozzles, from being moved with the rotating cylinders.
  • a solenoid 98 opens a valve 100 which permits air under pressure to enter into the chamber 94 and compress the spring 96.
  • the plush rods 80, 82 withdraw the fingers 76, 78 into the vacuum nozzles.
  • the top sheet of the stack is thus permitted to engage the rotating cylinders and is moved up until the leading edge is engaged engaged between the two belts.
  • a box 18 has air under pressure fed therein, This air is emitted through a plurality of openings in one wall of a box and serves to flow this air around the top of a top sheet and therethrough, so that it is literally floated above the sheet in the stack which is underneath.
  • one of the belts 24 fits into a groove in the middle cylinder. This is done for two reasons: first, to rotate the assembly by reason of the drive applied to the belt, and, second, to enable the removal of a sheet from the suction nozzle.
  • the mechanism 20 which is shown in cross section in Figure 3 and in further detail in Figure 6.
  • This consists of a box 110, which has an opening 112 in the face opposite the edges of the top sheets of the stack. Suction is applied to the box through a second opening 114.
  • the sheet serves to effectively block the suction nozzle portals from which the suction is provided.
  • the suction through the opening 112, accordingly, is free to act on any sheet which adheres or follows the top sheet. Thereby, only the top sheet is held against the separating drum. The remaining sheets are held back by suction in the stack.
  • two members 116, 118 are employed which are positioned to extend in the direction of the stack of sheets. These members are separately mounted on push rods 120, 122. Each push rod is held by means of a spring 124, so that the members 116, 118 are flat against the face of the box.
  • the solenoid 126 is operated to permit air to push against the piston head 128 to the top of the push rod 120.
  • the speed of operation of the device may be easily adjusted by controlling the speed of driving the belts from the electric motor 46.
  • the movement of the fingers and the members for moving the top sheet and preventing the following sheets from clogging the opening 112 where desired, may be timed electronically with the speed of the operation of the apparatus.
  • Both solenoids 98 and 126 are excited simultaneously to remove a sheet from the drum and to permit the top sheet on the stack to take its place.
  • this invention may be employed to provide a demand feed type of operation by exciting the two solenoids whenever it is desired to feed the next sheet.
  • the length of the documents which can be handled by thismachine is limited only by the speed at which the machine runs and by the frequency at which it is desired to feed such documents or pieces of paper.
  • the belt conveyor travels at a speed of inches per second
  • one sheet or document slightly less than 100 inches long or 20 documents slightly less than five inches long may be fed by the machine each second.
  • the variations in feeding speed can be accomplished simply by varying the time intervals at which the solenoids 98 and 126 are excited.
  • the stack of sheets is urged against the separating drum or cylinders.
  • the top sheet of the stack is first floated by air from the box 18 and then is sucked up against the cylinders but is held from frictional contact therewith by reason of the fingers. This blocks suction from being applied to the following sheet.
  • the following sheet is also held 'by the suction fromthe device 20. Clogging of the device 20 at the time of pickf up of the top sheet is prevented by a slight jog received by the remaining stack from the members 116, 118.
  • a further feature of this invention is that the succeeding sheets are not picked up at one end but rather are pulled or bent upward in a folding-unfold-.v
  • Apparatus for separating sheets from a stack comprising a drum having a groove, means to rotatably support said drum with its periphery in proximity to said stack of sheets, stationary suction means in and extending along a portion of said groove, a movable finger extending outward from said suction means and away from said drum surface, and means to retract said finger into said suction means to permit a sheet from said stack to be drawn against said drum surface to be movable therewith.
  • Apparatus for separating sheets from a stack comprising a drum having a circumferential groove, means to rotatably support said drum with its periphery in proximity to the top sheet of said stack of sheets, means to apply air under pressure to the top sheet of said stack of sheets adjacent one side of said drum, means to apply suction to the edges of sheets near the top of said stack which edges are extending at the other side of said drum, stationary suction means in and extending along a portion of said circumferential groove over said top sheet of said stack, a movable finger extending outward from said vacuum means and away from said drum surface, and means to retract said finger into said suction means to permit the top sheet from said stack to be drawn against said drum surface to be movable therewith.
  • Apparatus for separating sheets from a stack comprising a drum having a circumferential groove, means to rotatably support said drum with its periphery in proximity to the top sheet of said stack of sheets, means to apply air under pressure to the top sheet of said stack of sheets adjacent one side of said drum, means to apply suction to the edges of sheets near the top of said stack located furthest away from where said air under pressure is applied, stationary suction means in and extending along aportion of said circumferential groove over said top sheet of said stack, a movable finger extending outward from said stationary suction means and away from said drum surface, means to retract said finger into said suction means to permit the top sheet from said stack to be drawn against said drum surface to be movable therewith, a push rod positioned within said means to apply suction to the edges of sheets, and means to actuate said push rod to move said sheets near the top of said stack away from said means to apply suction to the edges of sheets and to be retracted while said top sheet is drawn against said drum by said
  • Apparatus for separating sheets from a stack comprising a rotatably supported shaft, three cylinders mounted on said shaft spaced from one another, a pair of vacuum nozzles respectively inserted in the spaces between said cylinders, said nozzles terminating in the space between and below the peripheries of said cylinders, said nozzles extending over a desired are of carry of sheets by said apparatus, a pair of movable fingers extending through said pair of vacuum nozzles and beyond the periphery of said cylinders, and means to retract said fingers into said nozzles and within the periphery of said cylinders when it is desired to separate a sheet from a stack.
  • each of said cylinders has axial ridging to prevent sheet slippage and the cylinder in the center has a peripheral groove to permit insertion of a conveyor belt therein.
  • said pair of movable fingers includes a pair of arcuate members supported by a pair of rods, said pair of rods extending within said pair of vacuum nozzles.
  • a rotatably supported shaft three cylinders mounted on said shaft spaced from one another, a pair of vacuum nozzles respectively inserted in the spaces between said cylinders, said nozzles each having an arcuate opening which is below the periphery of the cylinders and which extends over a desired arc of carry of said sheets by said apparatus, means to urge a stack of sheets toward the portion of said cylinders wherein one end of said vacuum nozzles occur to position a portion of the top sheet of said stack adjacent the arcuate opening of said nozzles, means to apply suction to the edges of said stack of sheets which are adjacent to the openings of said nozzles, means to apply air under pressure to the remaining portion of a top sheet of said stack which is not adjacent the nozzle openings, a pair of arcuate movable fingers extending through said pair of vacuum nozzles and beyond the periphery of said cylinders, and means to retract said fingers into said nozzles and Within the periphery
  • said means to apply suction to the edges of said stack includes a box having an opening through which said suction is applied, a fiat member mounted on either side of said opening, said fiat members extending in the direction. of the thickness of said stack of sheets for a plurality of sheets, and means to arcuate said flat members to deliver a push away from said box nozzle opening whenever said fingers are retracted within said nozzles.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
US504708A 1955-04-29 1955-04-29 Paper-handling apparatus Expired - Lifetime US2819076A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US504708A US2819076A (en) 1955-04-29 1955-04-29 Paper-handling apparatus
DEW18231A DE1113942B (de) 1955-04-29 1956-01-04 Vorrichtung zum Abnehmen von einzelnen Scheckformularen von einem Stapel
FR1145285D FR1145285A (fr) 1955-04-29 1956-01-04 Perfectionnements aux appareils de manutention du papier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US504708A US2819076A (en) 1955-04-29 1955-04-29 Paper-handling apparatus

Publications (1)

Publication Number Publication Date
US2819076A true US2819076A (en) 1958-01-07

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Application Number Title Priority Date Filing Date
US504708A Expired - Lifetime US2819076A (en) 1955-04-29 1955-04-29 Paper-handling apparatus

Country Status (3)

Country Link
US (1) US2819076A (fr)
DE (1) DE1113942B (fr)
FR (1) FR1145285A (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2921736A (en) * 1955-09-06 1960-01-19 Ncr Co Photoelectric reader for punched cards
US3041067A (en) * 1960-09-16 1962-06-26 Burroughs Corp Pneumatic sheet feeding mechanism
US3079147A (en) * 1960-09-02 1963-02-26 Sperry Rand Corp Sheet feeding
US3079149A (en) * 1960-09-02 1963-02-26 Sperry Rand Corp Sheet feeding
US3104099A (en) * 1961-11-29 1963-09-17 Ibm Sheet orienting and aligning mechanism
US3148876A (en) * 1962-08-24 1964-09-15 Int Paper Box Machine Co Sheet feeding apparatus
US3158367A (en) * 1959-10-23 1964-11-24 Burroughs Corp Pneumatic sheet separator
US3168307A (en) * 1962-07-09 1965-02-02 Walton R Fabric handling
US3194551A (en) * 1960-11-21 1965-07-13 Singer Co Air operated work loading mechanism for sewing machines
US3531103A (en) * 1967-06-21 1970-09-29 Usm Corp Fabric handling
US3819175A (en) * 1972-12-05 1974-06-25 Xerox Corp Vacuum stripping roll with stationary pickup slots
US3968623A (en) * 1975-02-26 1976-07-13 H. J. Langen & Sons Ltd. Wrap-around carton forming machine
US4397459A (en) * 1981-03-16 1983-08-09 Xerox Corporation Apparatus for detecting the flotation level in an air supported sheet separating and feeding device

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3103355A (en) * 1962-04-18 1963-09-10 Gen Electric Hinged gate document feeder
DE1179226B (de) * 1963-02-28 1964-10-08 Standard Elektrik Lorenz Ag Vorrichtung zum Vereinzeln und Abfoerdern der Stuecke eines Stapels flacher Gegenstaende
DE1204242B (de) * 1963-12-13 1965-11-04 Telefunken Patent Einrichtung zum gesteuerten Vereinzeln von flachem Foerdergut, wie insbesondere Belegen
FR2461668A1 (fr) * 1979-07-17 1981-02-06 Hotchkiss Brandt Sogeme Dispositif de depilage d'objets minces, flexibles, et machine a manipuler ces objets, equipee d'un tel dispositif
GB8321519D0 (en) * 1983-08-10 1983-09-14 De La Rue Syst Sheet feeding apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1535215A (en) * 1922-11-25 1925-04-28 George R Swart & Company Inc Sheet feeder
US2125199A (en) * 1938-01-06 1938-07-26 Isaac L Rheutan Feeding mechanism for printing presses
US2184229A (en) * 1936-12-24 1939-12-19 Spiess Georg Control device for sheet feeding apparatus

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE28894C (de) * 1900-01-01 W. B. PURVIS in Philadelphia, Pennsylvanien, V. St. A Papiersackmaschine
DE566918C (de) * 1931-07-18 1934-03-24 Alfred Winkler Vorrichtung zum Entnehmen des jeweils untersten Blattes eines Blaetterstapels
DE673732C (de) * 1936-12-25 1940-11-14 E H Georg Spiess Dr Ing Vorrichtung zum Trennen und Zufuehren des jeweils obersten Bogens eines Stapels zu einer Bearbeitungsmaschine
DE870564C (de) * 1945-08-31 1953-03-16 Warner Jones & Company Ltd K Einrichtung zum Bewegen oder zur Steuerung der Bewegung von Bahnen oder Blaettern aus Papier od. dgl. in Druckmaschinen od. dgl.
GB649530A (en) * 1945-09-26 1951-01-31 Dexter Folder Co Sheet feeding apparatus
US2704209A (en) * 1951-01-29 1955-03-15 Halahan John Paper feeding mechanism
US2770458A (en) * 1953-08-14 1956-11-13 Halahan John Paper feeder
DE1060874B (de) * 1955-02-26 1959-07-09 Falz Und Heftmaschinenwerk Lei Verfahren zur Vereinzelung der Bogen eines Stapels mittels Saugluft
DE1007340B (de) * 1955-02-26 1957-05-02 Falz Und Heftmaschinenwerk Lei Verfahren zur Bogenvereinzelung und -weiterfoerderung mittels Saugtrommel, insbesondere an Druckmaschinen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1535215A (en) * 1922-11-25 1925-04-28 George R Swart & Company Inc Sheet feeder
US2184229A (en) * 1936-12-24 1939-12-19 Spiess Georg Control device for sheet feeding apparatus
US2125199A (en) * 1938-01-06 1938-07-26 Isaac L Rheutan Feeding mechanism for printing presses

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2921736A (en) * 1955-09-06 1960-01-19 Ncr Co Photoelectric reader for punched cards
US3158367A (en) * 1959-10-23 1964-11-24 Burroughs Corp Pneumatic sheet separator
US3079149A (en) * 1960-09-02 1963-02-26 Sperry Rand Corp Sheet feeding
US3079147A (en) * 1960-09-02 1963-02-26 Sperry Rand Corp Sheet feeding
US3041067A (en) * 1960-09-16 1962-06-26 Burroughs Corp Pneumatic sheet feeding mechanism
US3194551A (en) * 1960-11-21 1965-07-13 Singer Co Air operated work loading mechanism for sewing machines
US3104099A (en) * 1961-11-29 1963-09-17 Ibm Sheet orienting and aligning mechanism
US3168307A (en) * 1962-07-09 1965-02-02 Walton R Fabric handling
US3148876A (en) * 1962-08-24 1964-09-15 Int Paper Box Machine Co Sheet feeding apparatus
US3531103A (en) * 1967-06-21 1970-09-29 Usm Corp Fabric handling
US3819175A (en) * 1972-12-05 1974-06-25 Xerox Corp Vacuum stripping roll with stationary pickup slots
US3968623A (en) * 1975-02-26 1976-07-13 H. J. Langen & Sons Ltd. Wrap-around carton forming machine
US4397459A (en) * 1981-03-16 1983-08-09 Xerox Corporation Apparatus for detecting the flotation level in an air supported sheet separating and feeding device

Also Published As

Publication number Publication date
DE1113942B (de) 1961-09-21
FR1145285A (fr) 1957-10-24

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