US2637553A - Sheet delivery apparatus for printing machines - Google Patents

Sheet delivery apparatus for printing machines Download PDF

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Publication number
US2637553A
US2637553A US19848A US1984848A US2637553A US 2637553 A US2637553 A US 2637553A US 19848 A US19848 A US 19848A US 1984848 A US1984848 A US 1984848A US 2637553 A US2637553 A US 2637553A
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United States
Prior art keywords
conveyor
cylinder
grippers
driving
sheet
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Expired - Lifetime
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US19848A
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English (en)
Inventor
Ranger Arthur Willard
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Individual
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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
    • B65H29/02—Delivering or advancing articles from machines; Advancing articles to or into piles by mechanical grippers engaging the leading edge only of the articles
    • B65H29/04—Delivering or advancing articles from machines; Advancing articles to or into piles by mechanical grippers engaging the leading edge only of the articles the grippers being carried by endless chains or bands
    • B65H29/041—Delivering or advancing articles from machines; Advancing articles to or into piles by mechanical grippers engaging the leading edge only of the articles the grippers being carried by endless chains or bands and introducing into a pile

Definitions

  • the apparatus being-1 usually provided with jogge'rs or'vibratin'g'plates for'sti'ai'ghtening"the sheets-on the pile;- v
  • I Hitherto th'ejconveyor has been mounted with: its'fbrward end on a cross shaft adjacent to' the impression cylinder; the" shai't' being irt a fixe d i position; anda'l'though in some instances the? conveyor can be swung" upwardly from its real" the Bed and piling table; the forwa rd end of the conveyor forms an obstructionat thati'erid whichi prevents access to the adjacent. ortion or the impression cylinder; and the case of a'cylindermachine with a sheet feeding mechanism at the sa'm'e side'a's the" delivery conveyoi it preveiitss access" to the lay board.
  • a safety lock is preferably" provided:-
  • Ihe invention further includes the provision of joggers for the piling table which comprise guideplates vibratedi by pneumatic devices so that their. action is light'an'd elastic and therehy avoids" liability of injury to the machine minder;
  • Figure. l is" a. side View somewhat diagram matically. illustrating a continuously rotating; cylinder. flat bed. printingma'chine' with one form of sheetv delivery: apparatus according.- ton the; in! vention appliedz.
  • Figures is: a plan View of Figure' 2;
  • Figure 5 is a: front view of. one form of clutchmechanism for" enabling. the drive' of the" con;-
  • Figure- 61 is. a somewhat diagrammatic: side viewofipart of said clutch m'echanism.
  • Figure 7 is a. side view
  • Figure: 8- isa rear. sectional? view on li -8,. Fid ure 7,.i'llustrating another. form of. driving gear for: the: conveyor..
  • Figures 9 and; 10 are, respectively; a side view and; a. sectional: end; view' on? Iil: l.0; Figure- 9;.
  • Th'ezfore section 9 has two side. frames 5 2 and I3 and the rear section l0 has two side fi'aines I4 and 15.
  • the fore section 9 haszaa shaft l'6'-fitted with sprockets ET and theJrea-r sectionl9 has a shaft Id fitted. with. sprockets i9.
  • Endless chains 20' pass over the sprockets I1 and l 9; suit'abiemeans being provided to guide and tension the chains; for? instance; as shown in Figures 3; 5" and 10';
  • the grippers 24 are of known type, that is, they are in the form of plates carried by shafts 25, which are mounted to oscillate in bearings 26 carried by the gripper bars 21 with which the grippers 24 co-operate.
  • the gripper shafts 25 have springs 28, which keep them closed until they are opened by cams 29 and 30 with which rollers 3l on trip levers 32 on the gripper shafts 25 engage as they pass around the fore and rear ends of the conveyor.
  • the cams 29 and 30 are fixed to the side frames I4 and I2, respectively, adjacent to the sprocket shafts l6 and [8.
  • the shaft II is supported in brackets 33 fixed to the main framework 34 of the machine.
  • the fore section 9 of the conveyor is normally supported at its outer end on brackets 35, which carry the shaft 36 of the impression cylinder 31,
  • brackets being supported by the machine framework 34. Only one bracket 35 is indicated in Figure 1, and the impression cylinder 3! is only diagrammatically indicated, as its form including the grippers 38 thereon and the manner of driving it may be of conventional type.
  • the rear conveyor section [0 when lowered is supported at its outer part by means hereinafter described.
  • a piling table 40 is diagrammatically indicated in Figure 1, as it may be of conventional type.
  • the rear conveyor section in is shown in Fig ure 1, provided with a counterbalance weight 4
  • the levers 43 rest upon brackets 38! on the frame 34, which also carries the sheet feeding mechanism, which is not illustrated as it may be of conventional type, the feed or lay board being diagrammatically indicated at 39.
  • the fore conveyor section 9 being shorter can be raised manually from its normal position, shown in full lines in Figure 1, to the position indicated in dot-and-dash lines. It is locked in the raised position by a safety lock, best shown in Figures 3 and 4, comprising a latch 45 pivoted at 46 to the conveyor side frame I2 and having a notch 41 for engagement with a pin 48 on the conveyor side frame 14.
  • an endless chain type having mechanical grippers must be driven at variable speeds, between the runs and sheet grippers thereon at the sprockets and travel on the one which revolves and stops after each revolution, while others (0) have cylinders which make two revolutions per printing operation and rise and fall.
  • the invention has been particularly designed for the type (a) but is equally applicable to type (b).
  • the speed of the conveyor must also be synchronized with the speed of revolution of the cylinder while the printed sheet is being taken or gripped.
  • the conveyor should not only be driven through gearing, preferably offset from the drive and pivot axis and variable or change speed gearing off the cylinder shaft to give effective synchronism or correct mutual time of arrival, but the speed of the conveyor must vary during removal of the sheet from the cylinder to suit the varying speed of the cylinder.
  • the came-v61 hriifis 20 are driven so that the gripper 2W afbro'ughtto arid'frorh the impressiori cyhhdei iii proper sequence or synchronisrn with the cylirider' grippers- 38 by the following niechelh is'r'nz
  • the wheel 53 is fixed on a stub shaft 54* mounted to rotate in a b'e'ar'irig': 5'50n a; bracket 5E5 fixed to the adjacent-upright bracket 33, as shown 111 Figure 5'.
  • a collar 62 oapab'le" of sliding oh the stub shaft '4 has an arm 53" provided with a drivirig pm 64 passing through a hole 655 iii the bevel wheel 53 and adapted, riormelly, to eiigege with 3; mg 66 on the bevel Wheel 5?.
  • the collar is- Ii'io'ved' by a yoke $7 to bring the driving ⁇ jihijrito and out of driving engeugemerit with; the" 111g' 66.
  • the yoke 67 is on one arm; of a; bell crank lever 68 which is pivoted at 69', the other arm of the lever havirig a rounded end it which, when the conveyor sections 3' and me in their normal pesi'tiohs, is situated; in; depressions H and 12 of two earns 13 arid. M; fixed to" the adjacent side frames 53' arid I501 we conveyor sections, es" shown in Figiiresfe' erid 6-.
  • the bell-crank lever 6% is heldin the normal position by a; spring" 531. Coheequ ently.
  • This train of gears may be a variable speed train as disclosed in the aforementioned Patent No. 2,542,705.
  • the shaft 36 is further provided with a gear wheel 81, which is mounted eccentrically on the shaft.
  • the gear wheel 8'! drives a gear wheel 88 through two intermediate gear wheels 90 andv 9I.
  • the gear wheel 88 is fixed on a short shaft 92 mounted to rotate in a bearing 93 carried by a bracket 94 fixed to the bearing bracket 35 on the framework 34 of the machine, this bracket 94, the drive gear I81 and the framework being omitted. in Figure 7 for the sake of clearness.
  • a swinging frame 95 pivoted on a bearing bush 92I of the shaft 92, carries the gear wheels 90 and 9
  • a connecting rod 96 is pivotally attached at one end 9'! to the lower end of theswinging frame 95, and at the other end to a pin 98 which is fixed in the end of the shaft 30 eccentrically to the centre line thereof, but concentric or co-axial with the gear wheel 81.
  • the swinging of the connecting rod 95 by the eccentric pin 98 causes the pinion 90 to oscillate or roll to and fro on the wheel 8'! as indicated by the arrows H4 and II5, Figure 7, which results in a slight retardation and acceleration in thespeed of the chain driving sprockets I"!
  • Another advantage of varying the speed of the conveyor is that as each sheet is deposited on the piling table its speed and therefore its momentum is decreased so that it is deposited smoothly and evenly on the pile.
  • a manually operated clutch is provided between the short shaft 92 and the sprocket shaft I 6 of the fore section 9 of the conveyor.
  • This clutch comprises a disc 99 fixed on the shaft 92 and having holes I I2 for the reception of driving pins I on a disc IOI, which is splined to the sprocket shaft I0, but is free to slide thereon.
  • the disc IOI has a collar I02.
  • a pin I03 on a lever I04 engages with the collar I02.
  • the lever I04 is pivoted at I05 and is pivotally connected by a pin I06 to an operating rod I01 provided with a handle I08.
  • the rod I01 can be rotated in the pin I06. It has a catch I09 fixed on it.
  • a fiat-bed printing machine comprising an impression cylinder continuously rotatable at a variable speed, a piling table, an endless chain conveyor for delivering printed sheets from the impression cylinder to the piling table, said endless chain conveyor being composed of two sections hinged at their adjacent ends for permitting either section to be raised and lowered as required, means for driving one of the sprocket shafts of the conveyor from the shaft of the impression cylinder, said driving means including a variable speed gear for synchronizing the speed of the conveyor with that of the impression cylinder, said driving means also including a clutch, and means for controlling said clutch to effect the'engagement and disengagement of said driving means when either of said conveyor sections are respectively lowered or raised.
  • a fiat-bed printing machine as specified in claim 1, having a short shaft mounted partly coaxially with the forward sprocket shaft of the conveyor, a clutch interposed between said shafts, and eccentric driving means between the shafts to cause increase in the speed of the chain conveyor adjacent the cylinder, comprising a gear wheel on said short shaft, a gear wheel eccentrically mounted on the shaft of the impression cylinder, a train of intermediate gear wheels between said e centric gear wheel and the said gear wheel on the short shaft, a swinging frame for carrying said intermediate gear wheels, said frame being pivotally mounted to swing about the axis of said short shaft, a driving pin mounted eccentrically on the shaft of the impression cylinder, but co-axially with the gear wheel thereon and a link pivotally connected at one end with said driving pin and at the other end with said frame.
  • a sheet delivery apparatus for printing machines of the class described comprising a rotatable impression cylinder having sheet grippers, means for rotating the cylinder, a piling table, an endless chain conveyor for delivering printed sheets from the impression cylinder to the piling table, releasable sheet grippers on the cylinder and conveyor respectively, said conveyor comprising two frame sections pivoted to swing up and down on a common hinge axis and chains trained around sprockets journaled at the opposite outer end portions of said frame sections, and speed change gear for driving said conveyor from the cylinder through said hinge axis to compensate for variations in the speeds of the cylinder and conveyor and of the respective grippers thereof in the take-off position so that the conveyor grippers will engage the printed sheets when released by the cylinder grippers, said speed change gear conveyor driving means including cooperating driving connections concentric and eccentric, respectively, to said hinge axis, whereby the conveyor chains and cylinder are driven at such relative variable speeds as to bring and actuate the respective grippers thereof to open and closed positions relatively in proper sequence in the holding and take
  • a sheet delivery apparatus for printing machines of the class described comprising a rotatable impression cylinder having sheet grippers, means for rotating the cylinder, a piling table, an endless chain conveyor for delivering printed sheets from the impression cylinder to the piling table, releasable sheet grippers on the cylinder and conveyor respectively, said conveyor comprising two frame sections pivoted to swing up and down on a common hinge axis and means for driving the conveyor from the cylinder and including releasably engageable drive mechanism for disengaging said conveyor driving means when either of said conveyor frame sections is raised and engaging said driving means when both of said conveyor sections are lowered, said conveyor driving means comprising speed change gear for driving said conveyor from the cylinder through said hinge axis to compensate for variations in the speeds of the cylinder and conveyor and including cooperating driving connections concentric and eccentric, respectively, to said hinge axis, whereby the conveyor chains and cylinder are driven at such relative variable speeds as to bring and actuate the respective grippers thereof to open and closed positions relatively in proper sequence in the holding and takeoff positions.
  • a flat-bed printing machine comprising a rotatable impression cylinder having sheet grippers, a piling table, an endless chain conveyor having grippers for delivering printed sheets from said impression cylinder to said piling table, said conveyor being supported by a pivotally mounted frame for permitting the raising and lowering thereof from and to operative position, means for driving said conveyor in synchronism with said cylinder and including releasably engageable drive mechanism operative to effect engagement or disengagement of said driving means when said conveyor frame is respectively lowered or raised, said driving means including means for synchronizing the relative positions of said conveyor grippers with said cylinder grippers upon engagement of said drive mechanism.
  • a fiat-bed printing machine comprising a rotatable impression cylinder having sheet grippers, a piling table, an endless chain conveyor having grippers for delivering printed sheets from said impression cylinder to said piling table, said conveyor being supported by a pivotally mounted frame for permitting the raising and lowering thereof from and to operative position,
  • said clutch means including cooperative rotatable members which are drivingly engageable at a selected relative angle of rotation for synchronizing the relative positions of said conveyor grippers with said cylinder grippers upon engagement of said clutch means.
  • a fiat-bed printing machine comprising a rotatable impression cylinder, a piling table, an endless chain conveyor for delivering printed sheets from said impression cylinder to said piling table, said conveyor including two pivotally mounted frame sections for permitting the respective raising and lowering thereof from and to operative position, means for driving said conveyor in synchronism with said cylinder and including clutch means, and means controlling said clutch means and operative by said frame sections to effect disengagement of said driving means when either of said conveyor frame sections is raised and to effect engagement of said driving means only when both of said conveyor frame sections are lowered.
  • a fiat-bed printing machine comprising a rotatable impression cylinder having sheet grippers, a piling table, an endless chain conveyor having grippers for delivering printed sheets from said impression cylinder to said piling table, said conveyor including two pivotally mounted frame sections for permitting the respective raising and lowering thereof from and to operative position, means for driving said conveyor in synchronism with said cylinder and in-- cluding clutch means, and means controlling said clutch means and operative by said frame sections to effect disengagement of said driving means when either of said conveyor frame sections is raised and to effect engagement of said driving means only when both of said conveyor frame sections are lowered, said clutch means including cooperative rotatable members which are drivingly engageable at a selected relative angle of rotation for synchronizing the relative positions of said conveyor grippers with said cylinder grippers upon engagement of said clutch means.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Discharge By Other Means (AREA)
  • Pile Receivers (AREA)
  • Screen Printers (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
US19848A 1947-04-08 1948-04-08 Sheet delivery apparatus for printing machines Expired - Lifetime US2637553A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB265530X 1947-04-08

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US (1) US2637553A (de)
CH (1) CH265530A (de)
DE (1) DE802572C (de)
GB (1) GB628158A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2833211A (en) * 1953-12-30 1958-05-06 Hoe & Co R Conveyor means for rotary offset printing machines
US3649006A (en) * 1970-02-09 1972-03-14 Xerox Corp Improved sheet handling apparatus
US5526105A (en) * 1994-12-14 1996-06-11 Eastman Kodak Company Articulated vacuum transport apparatus
CN115158970A (zh) * 2022-07-06 2022-10-11 江苏博汇纸业有限公司 一种高灰分纸板制备用供纸器输送结构

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2705918A (en) * 1950-02-15 1955-04-12 Roland Offsetmaschf Multi-colour sheet printing machine
DE968488C (de) * 1953-02-18 1958-02-27 Johannisberg G M B H Maschf Kettenausleger an Druckmaschinen

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US815008A (en) * 1905-07-17 1906-03-13 Howe And Davidson Company Paper-delivery.
US1494339A (en) * 1922-01-21 1924-05-20 Hoe & Co R Sheet-piling mechanism
US1600936A (en) * 1925-11-18 1926-09-21 Myron D Eddleman Multigraph attachment
US1645993A (en) * 1925-06-03 1927-10-18 William M Kelly Extension sheet delivery
GB284845A (en) * 1927-01-11 1928-02-09 Baker Perkins Ltd Improvements in or relating to conveying apparatus
US1694499A (en) * 1928-12-11 Paper jogger
GB327975A (en) * 1929-01-14 1930-04-14 Artur Buettner Improvements in delivery apparatus for cylinder printing presses
GB383243A (en) * 1932-06-04 1932-11-10 Schnellpressenfab Heidelberg Improvements in and relating to printing presses
US1979253A (en) * 1931-02-21 1934-11-06 Chicago Carton Co Carton blank folding and stapling machine
GB485239A (en) * 1937-05-10 1938-05-17 Miller Printing Machinery Co Improvements in or relating to printing presses
US2226674A (en) * 1939-09-01 1940-12-31 American Type Founders Inc Sheet delivery mechanism
US2250657A (en) * 1940-02-24 1941-07-29 American Type Founders Inc Printing press

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1694499A (en) * 1928-12-11 Paper jogger
US815008A (en) * 1905-07-17 1906-03-13 Howe And Davidson Company Paper-delivery.
US1494339A (en) * 1922-01-21 1924-05-20 Hoe & Co R Sheet-piling mechanism
US1645993A (en) * 1925-06-03 1927-10-18 William M Kelly Extension sheet delivery
US1600936A (en) * 1925-11-18 1926-09-21 Myron D Eddleman Multigraph attachment
GB284845A (en) * 1927-01-11 1928-02-09 Baker Perkins Ltd Improvements in or relating to conveying apparatus
GB327975A (en) * 1929-01-14 1930-04-14 Artur Buettner Improvements in delivery apparatus for cylinder printing presses
US1979253A (en) * 1931-02-21 1934-11-06 Chicago Carton Co Carton blank folding and stapling machine
GB383243A (en) * 1932-06-04 1932-11-10 Schnellpressenfab Heidelberg Improvements in and relating to printing presses
GB485239A (en) * 1937-05-10 1938-05-17 Miller Printing Machinery Co Improvements in or relating to printing presses
US2226674A (en) * 1939-09-01 1940-12-31 American Type Founders Inc Sheet delivery mechanism
US2250657A (en) * 1940-02-24 1941-07-29 American Type Founders Inc Printing press

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2833211A (en) * 1953-12-30 1958-05-06 Hoe & Co R Conveyor means for rotary offset printing machines
US3649006A (en) * 1970-02-09 1972-03-14 Xerox Corp Improved sheet handling apparatus
US5526105A (en) * 1994-12-14 1996-06-11 Eastman Kodak Company Articulated vacuum transport apparatus
CN115158970A (zh) * 2022-07-06 2022-10-11 江苏博汇纸业有限公司 一种高灰分纸板制备用供纸器输送结构
CN115158970B (zh) * 2022-07-06 2023-07-04 江苏博汇纸业有限公司 一种高灰分纸板制备用供纸器输送结构

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Publication number Publication date
GB628158A (en) 1949-08-23
DE802572C (de) 1951-02-15
CH265530A (de) 1949-12-15

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