US3241665A - Sheet conveying mechanism - Google Patents

Sheet conveying mechanism Download PDF

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Publication number
US3241665A
US3241665A US249694A US24969463A US3241665A US 3241665 A US3241665 A US 3241665A US 249694 A US249694 A US 249694A US 24969463 A US24969463 A US 24969463A US 3241665 A US3241665 A US 3241665A
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United States
Prior art keywords
sheets
shaft
speed
rolls
packs
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Expired - Lifetime
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US249694A
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English (en)
Inventor
Erk Amir
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Individual
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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
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/50—Piling apparatus of which the discharge point moves in accordance with the height to the pile
    • B65H29/51—Piling apparatus of which the discharge point moves in accordance with the height to the pile piling by collecting on the periphery of cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/68—Reducing the speed of articles as they advance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
    • B65H35/04—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators
    • B65H35/08—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators from or with revolving, e.g. cylinder, cutters or perforators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/14—Roller pairs
    • B65H2404/144—Roller pairs with relative movement of the rollers to / from each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/14—Roller pairs
    • B65H2404/144—Roller pairs with relative movement of the rollers to / from each other
    • B65H2404/1441—Roller pairs with relative movement of the rollers to / from each other involving controlled actuator
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S209/00—Classifying, separating, and assorting solids
    • Y10S209/922—Miscellaneous feed conveyors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S209/00—Classifying, separating, and assorting solids
    • Y10S209/933—Accumulation receiving separated items

Definitions

  • the invention relates to a conveyor mechanism for cut sheets or packs of such sheets of paper or similar materials which mechanism is capable of braking the sheets, which come from a high speed machine, to a speed suitable for some cooperating mechanism.
  • the device of the invention comprises an externally driven pair of rollers on shafts which are movable towards each other from a first position into a second operative position. In said first position, there remains between the rollers a gap sufiicient for free passage of the sheets; in said second operative position, the rollers contact the sheets or superposed sheets with pressure so as to impart to the sheets a transfer motion corresponding to the surface speed of the pair of rollers.
  • the device comprises means for displacing the rollers from the one position into the other position where the rollers grip the delivered sheets or packs as a function of the timed spacing of said sheets.
  • the roller pair is provided with a drive which drives the rollers at a speed of rotation which is independent of the speed at which the sheets are fed.
  • the device is provided with separate drive means, one of which controls rhythmically the spacing of the rollers, operates at the rhythm of the time intervals between the delivered sheets and is preferably directly coupled with the high speed machine delivering the sheets to be conveyed;
  • the second driving means provides for a rotational speed of the transfer rollers completely independent of the speed of the delivered sheets and also of the speed of the high speed machine.
  • Said rotational speed is adjusted to a speed suitable for the cooperating mechanism, for instance to a speed suitable for stacking the sheets.
  • it is of advantage to drive the rollers continuously at uniform speed.
  • the conveyor device of the invention brakes the advance of the sheets at high speeds of the machine, but may accelerate the movement at low speeds, whereby in both cases a speed suitable for the further treatment is obtained after the sheets have passed the roller pair.
  • FIG. 1 is a fragmentary view in side elevation of the essential parts of a transfer device embodying features of the present invention.
  • FIG. 2 is a diagrammatic view of a plant where the conveyor mechanism of FIG. 1 transfers the sheets coming from a cutter to the stacking device at a speed suitable for this purpose.
  • the transport rollers 1 and 2 cooperating as roller pair, are shown in their operative position, the pack of sheets therebetween being designated with the reference numeral 3.
  • gears mounted on shaft 4 of roller 1 and on shaft 5 of roller 2, outside the path of the sheet packs, are gears which are in engagement through intermediate gears 6 and 6' mounted on shafts 7 and 8, respectively.
  • shaft 4 is supported at its ends in two rigidly connected bell cranks which consist of the two lever arms 9 and 10 and are fulcrumed at 11.
  • the location of said fulcrum 11 is selected so as to maintain proper engagement of the drive gears on shafts 4 and 7 when the lever arm 9 is swung out from the shown operative position into the somewhat higher end position where the two rollers 1 and 2 do not grip the passing sheets.
  • One of the shafts 5, 7, or 8 is connected to a separate continuously running motor to ensure continuous drive of the two rollers 1 and 2. It is of advantage to use a motor whose number of revolutions per minute is adjustable within certain limits or a constant speed motor which is connected to the driven shaft by means of an infinitely variable speed drive transmission. In both cases, the rotational speed of the rollers 1 and 2 can be adjusted, during operation, to the desired value which will depend on the properties of the treated sheet material.
  • the second drive required to operate the device of the invention actuates, in the illustrated embodiment, the lever arm 10.
  • Said drive comprises a cam disc 12, the shaft of which is connected with the shaft of the coordinated collecting cylinder in such a Way that it makes also a full revolution for every revolution of the collecting cylinder.
  • the periphery of the cam 12 contacts a sensing roller 14 which pivots on a lever 15 about a fixed fulcrum 16 and transfers its movement to the lever arm 10 over an adjustable screw 17.
  • the cam 12 is so formed as to keep for the major part of one revolution the roller I lifted from the roller 2, and it is flattened only for a smaller portion of its periphery by a reduction of its diameter.
  • roller 1 When said flattened part passes below the sensing roll 14, the roller 1 takes up the operative position shown in the drawing, whereby the required contacting pressure against roller 2 is obtained by the weight of roller 1 and lever arm 9.
  • I provide, in the position shown, an air gap between screw 17 and lever 15.
  • the width of said air gap is adapted to the thickness of the transferred packs of sheets; said thickness may vary, though hardly during delivery of a web fed into the cutter but on change of the reel, as a function of the paper used.
  • the cam 12 runs synchronously with the shaft of the collecting cylinder.
  • a differential gear register gear
  • Such a gear allows to adjust the angle between cam and collecting cylinder also during operation. This means that closure of the gap between rollers 1 and 2 may be timed in relationship to the passing packs and that the length of the portion of the pack acted upon by the rollers can be adjusted.
  • the time of one revolution corresponds to the time interval between the feed of two subsequent sheets to the collecting cylinder, and, therefore, also to the intervals in which a pack delivered from the collecting cylinder could reach the bite between the rollers 1 and 2.
  • said gap is alternately opened and closed; hereby, however, a pack is not gripped at every closure since only after a sufiicient number of cycles a new pack enters the bite between the rollers 1 and 2. Therefore, even on strong retardation of a pack, there is no risk that the leading edge of a subsequent pack contacts the trailing edge of the preceding pack so as to produce buckling of said subsequent pack.
  • shaft 4 may be swung about shaft 1 to bring the transport cylinders 1 and 2 in operative position, or it may be raised from the shaft 5 in a straight line in timed relationship with the spacing of the sheets.
  • the opening of the roller pair need not be controlled from the shaft of the collecting cylinder by mechanical means; electromagnetic means may be used which may be actuated in the required rhythm by a switch disk synchronously driven with, or directly mounted on, the shaft of the collecting cylinder.
  • the register gear may be replaced by adjustable electric delay means.
  • FIG. 2 shows diagrammatically such a machine where the web supplied from a reel is checked for defects and cut into sheets, whereupon the good sheets and the reject sheets are passed to separate stacking means.
  • the various operating stations are shown, which are passed by the web or the cut sheets, while the lower part illustrates schematically the mechanical drives for said stations.
  • Drive rollers 19 support the supply roll 18 from which the web 20 passes over a tension roll 21 and a guide roll 22 through the devices 23 and 24 at the upper and lower face of which the web is subjected to a sequential photoelectric surface scanning examination.
  • the correct speed of the web is ensured by a pair of drawing rolls 25 which guide the web to a rotating transverse cutter 26 which severs sheets of uniform length.
  • Such sheets are then passed by conveyor belts 28 to a switch 29 which is controlled by the electric pulses generated in the devices 23 and 24.
  • the speed of the conveyor belts 28 is higher by a certain ratio than the speed of the web 20 so as to leave between the sheets the distance required for their further treatment.
  • the switch controls two separate paths 30 and 31, whereby path 30 receives the sheets found acceptable in the sorting operation, and path 31 receives the rejects.
  • Either path 30 and 31 leads first to a collecting cylinder 32 or 33, respectively.
  • Said collecting cylinders complete always one revolution in the time interval between two cutting actions of the cutter 26.
  • the circumferential speed of said cylinders corresponds to the speed of the conveyor belts 28 so that a sheet fed to the collecting cylinder is placed with its leading edge exactly on the leading edge of a sheet which already rotates with the cylinder. In this way, packs of sheets are formed on the collecting cylinders.
  • the packs are taken off the cylinders by switches 34 and 35, respectively, which are displaceable between two end positions and pass the packs onto the conveyor belts 36 and 37, respectively.
  • switches 34 and 35 are displaceable between two end positions and pass the packs onto the conveyor belts 36 and 37, respectively.
  • it is necessary to count the delivered sheets which may be done, for instance, by means of photoelectric counters in the paths 30 and 31.
  • the packs When leaving the collecting cylinders, the packs have still a speed which equals the circumferential speed of the collecting cylinders 32, 33.
  • the packs are then passed by conveyors 36, 37 over tables 38, 39 to a conveyor device as shown in FIG. I. Said device is shown in FIG.
  • the acceptable packs pass from the table 38 to the stacker 40, and the reject packs from the table 39 to the stacker 41, at a speed most suitable for the stacking operation.
  • the drive trains in FIG. 2 comprise a main drive motor 43 driving over a drive train 53 directly the roller pair 25, whose speed of rotation determines the operating speed of the entire plant.
  • the variable speed drive transmission 55 is provided because slippage may take place according to the smoothness of the web surface; preferably, I provide an automatic control for the drive transmission which is responsive to an upper or lower end position of roll 21.
  • a further drive train 56 branches off drive train 53 and leads over an infinitely variable speed drive transmission 57 and drive train 58 to the cutter 26.
  • the transmission 57 is adjusted in accordance with the desired length of the cut sheets.
  • Still another drive train branches off drive train 58 and is preferably constituted by a vertical shaft 59 from which drive trains 60 to 64 branch off.
  • Branch 60 actuates the switch 29 and part of the transport means for the cut sheets.
  • Branches 61 and 63 are provided to drive the collecting cylinders 33 and 32, respectively, whereby these drive trains also operate the conveyor belts, which advance the individual sheets at a rate corresponding to the circumferential speed of the collecting cylinders.
  • the two branches 62 and 64 drive the cam discs 12 which effect the displacement of the shafts of the rolls 1 and 2 into their respective end positions.
  • Separate motors 44, 45 drive the pairs of rolls 1, 2; the rotational speed of said motors is adjustable, or they are connected to an adjustable gear, so that the rolls 1, 2 are driven at a speed of rotation which is independent of all the other drives.
  • Additional drive trains 65 and 67 branch off trains 61 and 63, respectively (see FIG. 2), which drive the bands pressing the sheets against the surfaces of the collecting cylinders 32 and 33.
  • Infinitely variable speed drive units 66 and 68 are provided in the trains 65 and 67, respectively, which compensate for slippage obtaining between the bands and the collecting cylinders, which causes displacement of the individual sheets of a pack, so that the leading edges of the individual sheets register and do not lie in scaled formation.
  • the device is used in combination with the photoelectric surface scanning means 23, 24 in front of the cutter means and the switch 29 behind the cutter means, in the direction of travel of the web and sheets; this arrangement results in a particular manner of operation of the two pairs of cylinders 1, 2 insofar as the time intervals between the stacking of the produced packs are entirely irregular. Said intervals depend, for each of the two cylinder pairs, on the number of sorted out rejects.
  • the construction of my device solves the problem to maintain in each case the most favorable stacking speed of packs in spite of an irregular timing of the feed of such packs, independently of the operative speed of the sorting and cutting means.
  • a conveyor mechanism comprising a pair of coacting transport rolls, the shaft of one of said rolls being displaceable with respect to the shaft of the other of said rolls so as to raise said roll from an operative position, in which the two rolls grip sheets fed into their bite, into an inoperative position, lever means actuating said displaceable shaft so as to raise said roll, cam means actuating said lever means in timed relation with the delivery of sheets from said collecting cylinder into the bite of said transport rolls, and a cam shaft driving said cam means, said cam shaft being operatively connected to said collecting cylinder so as to rotate with the same speed as said cylinder.
  • a conveyor mechanism as claimed in claim 1 comprising means adjusting the timing of said cam means.
  • ROBERT B REEVES, Primary Examiner.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
US249694A 1962-01-12 1963-01-07 Sheet conveying mechanism Expired - Lifetime US3241665A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEE0022227 1962-01-12

Publications (1)

Publication Number Publication Date
US3241665A true US3241665A (en) 1966-03-22

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Application Number Title Priority Date Filing Date
US249694A Expired - Lifetime US3241665A (en) 1962-01-12 1963-01-07 Sheet conveying mechanism

Country Status (5)

Country Link
US (1) US3241665A (fr)
AT (1) AT255885B (fr)
CH (1) CH408060A (fr)
FR (1) FR1347345A (fr)
GB (1) GB952438A (fr)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3991672A (en) * 1975-04-25 1976-11-16 Mfe Corporation Line printer for printing information on tickets
US4269409A (en) * 1976-12-17 1981-05-26 Hoechst Aktiengesellschaft Original document transport mechanism for electrophotographic copying machines
US4684119A (en) * 1983-07-25 1987-08-04 De La Rue Systems Limited Sheet feeding apparatus
US5182861A (en) * 1989-08-29 1993-02-02 Mutoh Industries Ltd. Sheet-driven type automatic drafting machine
US5350170A (en) * 1993-07-21 1994-09-27 Jon Emigh Roller gap setting system
US5488467A (en) * 1994-06-24 1996-01-30 Rjs, Inc. Laser printer paper handling system
US5735784A (en) * 1995-06-07 1998-04-07 Ranpak Corp. Loading assembly for a cushioning conversion machine
US5865432A (en) * 1996-02-13 1999-02-02 Samsung Electronics Co., Ltd. Device for eliminating jammed papers
US6089565A (en) * 1998-01-09 2000-07-18 Western Printing Machinery Company Stop wheel assembly and method for web-product delivery system
US6120428A (en) * 1995-06-07 2000-09-19 Ranpak Corp. Loading assembly for a cushioning conversion machine and method thereof
US20040251619A1 (en) * 2003-05-22 2004-12-16 Oki Data Corporation Medium conveying apparatus
US20070029725A1 (en) * 2005-08-08 2007-02-08 Marx Martin J Nip pressure
WO2012032481A1 (fr) * 2010-09-08 2012-03-15 Itw Cs (Uk) Limited Rouleau feuilleté adhésif large pour nettoyage par contact
US20120261879A1 (en) * 2011-04-18 2012-10-18 Hon Hai Precision Industry Co., Ltd. Paper inputting apparatus
CN115009623A (zh) * 2022-06-15 2022-09-06 河南中烟工业有限责任公司 一种包装机上透明纸的加速辊对的相位调节机构

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2541502C3 (de) * 1975-09-17 1983-12-08 Albert-Frankenthal Ag, 6710 Frankenthal Einrichtung zum Verlangsamen der aus dem Falzapparat einer Rotationsdruckmaschine in das Ablegeschaufelrad abzulegenden Druckexemplare
US4569514A (en) * 1984-07-06 1986-02-11 Savin Corporation Copy sheet decelerator for electrophotographic copier
GB2176173A (en) * 1985-06-10 1986-12-17 Malcolm Rogers Feeding paper to a shredding machine
CA1291176C (fr) * 1986-04-04 1991-10-22 Littleton Industrial Consultants, Inc. Systeme aiguilleur-debiteur de feuilles
US5039082A (en) * 1986-04-04 1991-08-13 Littleton Industrial Consultants, Inc. Double slow down pinless and gripperless delivery system
US4919027A (en) * 1986-04-04 1990-04-24 Littleton Industrial Consultants, Inc. Sheet diverting and delivery system
US4969640A (en) * 1986-04-04 1990-11-13 Littleton Industrial Consultants, Inc. Sweet diverting and delivery system
IT1230509B (it) * 1988-10-11 1991-10-25 Fimi Spa Macchina e metodo per il rallentamento di una serie di fogli di lamiera viaggianti in stretta successione lungo una linea di produzione

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2298368A (en) * 1935-06-10 1942-10-13 Crown Cork & Seal Co Calipering mechanism
US2804974A (en) * 1954-02-01 1957-09-03 Alonzo W Noon Automatic separating system
US2873968A (en) * 1957-04-08 1959-02-17 Samuel M Langston Co Hydraulically loaded feed rolls for corrugated paper stock
US2950640A (en) * 1951-11-28 1960-08-30 United States Steel Corp Mechanism and method for classifying and assorting metal sheets

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2298368A (en) * 1935-06-10 1942-10-13 Crown Cork & Seal Co Calipering mechanism
US2950640A (en) * 1951-11-28 1960-08-30 United States Steel Corp Mechanism and method for classifying and assorting metal sheets
US2804974A (en) * 1954-02-01 1957-09-03 Alonzo W Noon Automatic separating system
US2873968A (en) * 1957-04-08 1959-02-17 Samuel M Langston Co Hydraulically loaded feed rolls for corrugated paper stock

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3991672A (en) * 1975-04-25 1976-11-16 Mfe Corporation Line printer for printing information on tickets
US4269409A (en) * 1976-12-17 1981-05-26 Hoechst Aktiengesellschaft Original document transport mechanism for electrophotographic copying machines
US4684119A (en) * 1983-07-25 1987-08-04 De La Rue Systems Limited Sheet feeding apparatus
US5182861A (en) * 1989-08-29 1993-02-02 Mutoh Industries Ltd. Sheet-driven type automatic drafting machine
US5350170A (en) * 1993-07-21 1994-09-27 Jon Emigh Roller gap setting system
US5488467A (en) * 1994-06-24 1996-01-30 Rjs, Inc. Laser printer paper handling system
US5735784A (en) * 1995-06-07 1998-04-07 Ranpak Corp. Loading assembly for a cushioning conversion machine
US6120428A (en) * 1995-06-07 2000-09-19 Ranpak Corp. Loading assembly for a cushioning conversion machine and method thereof
US5865432A (en) * 1996-02-13 1999-02-02 Samsung Electronics Co., Ltd. Device for eliminating jammed papers
US6089565A (en) * 1998-01-09 2000-07-18 Western Printing Machinery Company Stop wheel assembly and method for web-product delivery system
US20040251619A1 (en) * 2003-05-22 2004-12-16 Oki Data Corporation Medium conveying apparatus
CN100379572C (zh) * 2003-05-22 2008-04-09 日本冲信息株式会社 媒体输送装置
US7431292B2 (en) * 2003-05-22 2008-10-07 Oki Data Corporation Medium conveying apparatus
US20070029725A1 (en) * 2005-08-08 2007-02-08 Marx Martin J Nip pressure
US7455295B2 (en) * 2005-08-08 2008-11-25 Hewlett-Packard Development Company, L.P. Nip pressure
WO2012032481A1 (fr) * 2010-09-08 2012-03-15 Itw Cs (Uk) Limited Rouleau feuilleté adhésif large pour nettoyage par contact
US20120261879A1 (en) * 2011-04-18 2012-10-18 Hon Hai Precision Industry Co., Ltd. Paper inputting apparatus
US8454015B2 (en) * 2011-04-18 2013-06-04 Hon Hai Precision Industry Co., Ltd. Paper inputting apparatus
CN115009623A (zh) * 2022-06-15 2022-09-06 河南中烟工业有限责任公司 一种包装机上透明纸的加速辊对的相位调节机构
CN115009623B (zh) * 2022-06-15 2024-05-10 河南中烟工业有限责任公司 一种包装机上透明纸的加速辊对的相位调节机构

Also Published As

Publication number Publication date
GB952438A (en) 1964-03-18
AT255885B (de) 1967-07-25
CH408060A (de) 1966-02-28
FR1347345A (fr) 1963-12-27

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