US3691948A - Disconnect arrangement for multi-unit printing press - Google Patents

Disconnect arrangement for multi-unit printing press Download PDF

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Publication number
US3691948A
US3691948A US130082A US3691948DA US3691948A US 3691948 A US3691948 A US 3691948A US 130082 A US130082 A US 130082A US 3691948D A US3691948D A US 3691948DA US 3691948 A US3691948 A US 3691948A
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US
United States
Prior art keywords
gear
grippers
cylinder
cylinders
transfer cylinder
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Expired - Lifetime
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US130082A
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English (en)
Inventor
Donald L Southam
William Weigl
Thomas J Kacmarcik
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.)
Harris Graphics Corp
Original Assignee
Harris Intertype Corp
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Publication date
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Assigned to HARRIS GRAPHICS CORPORATION reassignment HARRIS GRAPHICS CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: HARRIS CORPORATION
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Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines

Definitions

  • This invention relates to a multi-unit sheet fed rotary I printing press and, more particularly, to a disconnect arrangement in which a transfer cylinder gear is shifted .out of engagement with a gear in the press drive train to permit individual rotation of the press units.
  • actuator means are provided for shifting the transfer cylinder gear axially out of mesh with the gear on one of the other cylinders thereby interrupting the drive train and disconnecting the printing units from each other with the two disengaged cylinders being so dimensioned and arranged that the radially outer position of the grippers on each cylinder clears the periphery of the other cylinder whereby the cylinders may be rotated independently without gripper interference.
  • one of the adjacent cylinders has a gear which is double the width of the gears on the other adjacent cylinder and the transfer cylinder whereby axial shifting of the transfer cylinder gear maintains that gear in mesh with the double width gear while breaking mesh with the gear on the other cylinder.
  • the preferred embodiment of the invention further contemplates that the transfer cylinder and its grippers will be shifted axially as a unitary assembly with the transfer cylinder gear and that the spacing of the grippers in each of the sets of grippers will be such that the grippers on the transfer cylinder will be interdigitated with the grippers on the adjacent cylinders both before and after axial shifting movement of the transfer cylinder.
  • FIG. 1 is a schematic illustration in side elevation of a typical multi-unit press in which the principles of this invention may be used;
  • FIG. 2 is a sectional view taken generally along line 22 of FIG. 1;
  • FIG. 3 is a schematic illustration of the grippers on one of the cylinders and the required clearance to avoid gripper interference
  • HO. 4 is a fragmentary view illustrating the relationship of the transfer cylinder gear with a keeper ring on an adjacent gear
  • FIG. 5 is a fragmentary top plan view of the keeper ring. e
  • each of the units includes an apsheets between units 16, 18.
  • the transfer cylinders 28 v and 36 are conventional in construction and operation so further description of these cylinders is believed unnecessary.
  • gears 42, 44, 46 Secured for rotation with each of the cylinders30, 32, 34 are gears 42, 44, 46, respectively.
  • the gear 46 is double the width of gears 42 and 44 but the gears otherwise lie in a common plane.
  • the transfer cylinder 32 will be disconnected from the press gear drive train thereby dividing the press into two separate pairs of printing units. Disconnect of the transfer cylinder 32 is accomplished by shifting the gear 44 axially out of mesh with gear 42 while remaining in mesh with gear 46. The shifting movement of the gear 44 may be accomplished by various actuator means.
  • One suitable actuator is a double acting hydraulic cylinder, schematically illustrated at 48, which is connected to the shaft 40. Selective actuation of the actuator 48 shifts the shaft 40 to the right, as viewed in FIG. 2, thereby displacing the gear 44 to a position out of mesh with the gear 42.
  • units 12 and 14 may be driven independently of printing units 16 and 18 by separate motors,
  • the gear 42 is provided with a keeper ring 50on the axial outer face thereof.
  • the keeper ring comprises a generally flat annular plate having a generally circular periphery 52 formed at a radius r,.
  • the radius r is at least large enough to interfere with the mating gear 44 but is normally axially offset from the teeth of that gear.
  • the radius'r actually corresponds to the outside radius of the gear 42. It will be appreciated that the keeper ring with the radius r, radially overlaps the teeth on the gear 44 at the point of mesh between the gears 42,44 and thereby precludes axial shifting movement of the gear 44.
  • eachof the gears 42,46 is provided with sensing blocks, not shown, which maybe of a conventional construction and which are adapted to cooperate with a pair of sensing probes 58,60.
  • the sensing blocks and probes comprise a part of a conventional proximity switch sensing head.
  • the angular position of the sensing blocks and the probes is such that when the gear 44 and the keeper plate 50 are in the position shown in-FIG. 4,-the proximity switch sensing mechanism will indicate that the cylinders are in a disconnect or reconnect position.
  • An appropriate circuit may be employed with the switch sensing head so that actuation of the cylinder 48 is prevented except when the proximity switches indicate the cylinders are in the proper rotational position.
  • the cylinder 32 will be shifted axially as a unit with the gear 44. Accordingly, provision must be made both for avoiding interference between the sets of adjacent gripper fingers on adjacent cylinders as the cylinder 32 is shifted axially and interference between the grippers and the periphery of the adjacent cylinder as the cylinders are individually rotated.
  • the cylinder has a pair of angularly spaced gaps 62 in which sets of grippers 64 are positioned.
  • cylinder 32 has a pair of gaps 66 in which grippers-68am positioned while cylinder 34 has a pair of gaps 70 with grippers 72 positioned therein.
  • FIG. 3 illustrates the manner in which the grippers, for example, grippers 68 are supported on a pivotable shaft 74 whereby the grippers pivot between a radially inward position where they are in engagement with gripper pads or posts 76 and a radially outer position where they are radially spaced from the gripper pads.
  • Each set of grippers is controlled in its movements by spring means, not shown, and a cam and follower arrangement.
  • One such cam and follower arrangement for the grippers 68 is schematically illustrated, in FIG. 2 wherein acam follower 78 is adapted to cooperate with a stationary cam 80 secured to the side frame 38.
  • a similar cam and follower arrangement would be provided for each of the sets of grippers on the other cylinders 30,34.
  • the grippers 68 are axially spaced along the cylinder 32in such manner that they are offset from and interdigitated with the grippers 64 and 72 on the adjacent cylinders 30,34 during normal press operationsQAs the cylinder 32 is shifted axially, -it is necessary that interference between. grippers 68 and grippers 64 and 72 be avoided. This may be accomplished by spacing grippers 64,72 an amount x sufficient to accommodate the axial shift of the grippers 68.
  • gripper 68a for example, is illustrated as being positioned between the grippers 64,72 on cylinders 30,34 when in the normal position shown in full lines. The spacing x of grippers 64,72 is such that, upon shifting of cylinder 32, gripper 68a moves to a position shown in dotted lines which is still between the adjacent grippers.
  • the keeper ring 50 may be angularly positioned such that cylinder 32 can be shifted axially only in a position such as that shown in FIG. 1 where the grippers on the respective cylinders are angularly offset from each other. In this position of the cylinders, the grippers are not interleaved and the cylinder 32 may be shifted axially without concern for interference of the grippers. However, upon completion of shifting movement of cylinder 32, the grippers 68 must be positioned to be interdigitated with the grippers 72 and 64 so that when the printing units are operated independently, the grippers on adjacent cylinders do not interfere.
  • cam follower 78 is constructed such that the operative portion of the follower is axially elongated thereby to maintain operative engagement with the cam 80 in the axially shifted position of cylinder 32.
  • cylinders 32,34 cooperate in precisely the same manner in the disconnect position as during normal printing operations and interference between the grippers on onecylinder with the periphery of the adjacent cylinder does not present a problem.
  • each of cylinders 30 and 32 as shown in FIGS. 2 and 3 are reduced in diameter so that there is defined between the two cylinders a relieved space or clearance into which thegrippers of both cylinders may open without engaging the periphery of the adjacent cylinder.
  • This condition is illustrated in FIG. 3 wherein, for example, cylinder 32 is illustrated as rotating relative to cylinder 30 and the grippers 68 rather, it is intended to be limited only by the scope of the appended claims.
  • the motors can be driven at slightly different speeds until the gear teeth properly align.
  • Sensing means provided to sense this relationship can then be caused to actuate the gears into engagement in the usual manner while the units are being driven. Since interference of parts is impossible, further sensing means can be provided as a final assurance that the gears have correctly entered into mesh. This latter sensing means could be made to provide a control interlock to prevent the feeding of sheets or running of the press at high speed unless re-. engagement has been made with the correct teeth in mesh. All of the above may also be made to occur with one press section stopped and the other being turned over at a very slow speed.
  • each of said set of grippers being supported on its associated cylinder for pivoting movement between a radially outward position and a radially inward position
  • said transfer cylinder and said one adjacent cylinder being so dimensioned and arranged that the radially outer position of the grippers on each of these cylinders clears the periphery of the other cylinder whereby the cylinders may be rotated relative to each other.
  • the spacing of the grippers in each of said sets of grippers being such that the grippers on said transfer cylinder are interdigitated without interference with the grippers on said other cylinders both before and after axial shifting movement of said transfer cylinder.
  • step of shifting the transfer cylinder gear includes shifting the transfer cylinder axially, said method further including the steps of:
  • the grippers thereon may be interdigitated with the grippers on the adjacent cylinders 8.
  • the method of claim 7 wherein the step of positioning the grippers comprises rotating the cylinders to a position where the grippers are displaced from a sheet transfer position.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
US130082A 1971-04-01 1971-04-01 Disconnect arrangement for multi-unit printing press Expired - Lifetime US3691948A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US13008271A 1971-04-01 1971-04-01

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US3691948A true US3691948A (en) 1972-09-19

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US130082A Expired - Lifetime US3691948A (en) 1971-04-01 1971-04-01 Disconnect arrangement for multi-unit printing press

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DE (1) DE2215502A1 (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3847077A (en) * 1973-04-02 1974-11-12 Polygraph Leipzig Setting up arrangement for a combined printing and stamping machine
US4056056A (en) * 1973-03-21 1977-11-01 De La Rue Giori S.A. Rotary printing press
US4154165A (en) * 1976-08-21 1979-05-15 Heidelberger Druckmaschinen Aktiengesellschaft Drive system for rotary printing presses
FR2446719A1 (fr) * 1979-01-22 1980-08-14 Wifag Maschf Entrainement de machines d'impression offset rotatives
FR2446718A1 (fr) * 1979-01-20 1980-08-14 Roland Man Druckmasch Dispositif pour l'amenee de liquide au cylindre porte-cliches d'une machine a imprimer rotative en offset
US5265528A (en) * 1991-12-18 1993-11-30 Man Roland Druckmaschinen Ag Clutch mechanism for releasing the gears of a double gearwheel drive in a printing press
WO2009005652A1 (en) * 2007-06-28 2009-01-08 Goss International Americas, Inc. Variable cutoff printing unit belt blanket and method of printing
US20090064881A1 (en) * 2007-06-28 2009-03-12 Goss International Americas, Inc. Variable cutoff printing unit and method of printing

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2003798A (en) * 1934-06-07 1935-06-04 Cottrell C B & Sons Co Offset printing press
US2705918A (en) * 1950-02-15 1955-04-12 Roland Offsetmaschf Multi-colour sheet printing machine
US2707914A (en) * 1952-05-27 1955-05-10 Harris Seybold Co Drive for multicolor press
US3557692A (en) * 1968-09-09 1971-01-26 Harris Intertype Corp Plural independently operable motor drive arrangement in printing press
US3606800A (en) * 1970-04-20 1971-09-21 Harris Intertype Corp Printing press drive

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2003798A (en) * 1934-06-07 1935-06-04 Cottrell C B & Sons Co Offset printing press
US2705918A (en) * 1950-02-15 1955-04-12 Roland Offsetmaschf Multi-colour sheet printing machine
US2707914A (en) * 1952-05-27 1955-05-10 Harris Seybold Co Drive for multicolor press
US3557692A (en) * 1968-09-09 1971-01-26 Harris Intertype Corp Plural independently operable motor drive arrangement in printing press
US3606800A (en) * 1970-04-20 1971-09-21 Harris Intertype Corp Printing press drive

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4056056A (en) * 1973-03-21 1977-11-01 De La Rue Giori S.A. Rotary printing press
US3847077A (en) * 1973-04-02 1974-11-12 Polygraph Leipzig Setting up arrangement for a combined printing and stamping machine
US4154165A (en) * 1976-08-21 1979-05-15 Heidelberger Druckmaschinen Aktiengesellschaft Drive system for rotary printing presses
FR2446718A1 (fr) * 1979-01-20 1980-08-14 Roland Man Druckmasch Dispositif pour l'amenee de liquide au cylindre porte-cliches d'une machine a imprimer rotative en offset
US4290360A (en) * 1979-01-20 1981-09-22 M.A.N.-Roland Druckmaschinen Aktiengesellschaft Offenbach Selective ink and wetting liquid, or wetting liquid only, application system for offset printing presses
FR2446719A1 (fr) * 1979-01-22 1980-08-14 Wifag Maschf Entrainement de machines d'impression offset rotatives
US5265528A (en) * 1991-12-18 1993-11-30 Man Roland Druckmaschinen Ag Clutch mechanism for releasing the gears of a double gearwheel drive in a printing press
WO2009005652A1 (en) * 2007-06-28 2009-01-08 Goss International Americas, Inc. Variable cutoff printing unit belt blanket and method of printing
US20090025583A1 (en) * 2007-06-28 2009-01-29 Goss International Americas Inc. Variable cutoff printing unit with belt blanket and method of printing
US20090064881A1 (en) * 2007-06-28 2009-03-12 Goss International Americas, Inc. Variable cutoff printing unit and method of printing
JP2010531255A (ja) * 2007-06-28 2010-09-24 ゴス インターナショナル アメリカス インコーポレイテッド ベルトブランケットを有する可変カットオフ式印刷機および印刷の方法
US8141489B2 (en) 2007-06-28 2012-03-27 Goss International Americas, Inc. Variable cutoff printing unit and method of printing
US8161874B2 (en) 2007-06-28 2012-04-24 Goss International Americas, Inc. Variable cutoff printing unit with belt blanket and method of printing
CN101687410B (zh) * 2007-06-28 2013-03-27 高斯国际美洲公司 具有带状橡皮布的可变裁切的印刷单元和印刷方法

Also Published As

Publication number Publication date
DE2215502A1 (de) 1972-10-05

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AS Assignment

Owner name: HARRIS GRAPHICS CORPORATION MELBOURNE, FL A DE CO

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:HARRIS CORPORATION;REEL/FRAME:004227/0467

Effective date: 19830429