US3614092A - Sheet transfer mechanism for sheet fed rotary printing presses - Google Patents

Sheet transfer mechanism for sheet fed rotary printing presses Download PDF

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Publication number
US3614092A
US3614092A US756960A US3614092DA US3614092A US 3614092 A US3614092 A US 3614092A US 756960 A US756960 A US 756960A US 3614092D A US3614092D A US 3614092DA US 3614092 A US3614092 A US 3614092A
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US
United States
Prior art keywords
control
sheet
drum
transfer
lever
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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
US756960A
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English (en)
Inventor
Franz Moos
Gerhard Loffler
Arthur Brechtel
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.)
Schnellpressenfabrik Frankenthal Albert and Cie AG
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Schnellpressenfabrik Frankenthal Albert and Cie AG
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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
    • B41F21/00—Devices for conveying sheets through printing apparatus or machines
    • B41F21/14—Adjusting lateral edges, e.g. side stops
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F21/00—Devices for conveying sheets through printing apparatus or machines
    • B41F21/10—Combinations of transfer drums and grippers

Definitions

  • PATENTEDUDT 1 9 l97l SHEET 3 [IF 3 BACKGROUND OF THE INVENTION
  • This invention provides a sheet transfer mechanism to be used with rotary printing presses into which sheet material is fed.
  • the rotary printing presses for which this invention is applicable have impression cylinders which include two or more operational portions.
  • the sheets of material are taken from one operation for printing and placed on a second portion to obtain a second inking. Thereafter, the sheets are transferred to the next inking operation or to either a taking off or a handing over operation.
  • the taking off and the handling over of the sheets are made in the same central line between the impression cylinder and the transfer mechanism.
  • the sheets of material are taken from a portion of the impression cylinder by grippers of the transfer mechanism.
  • the sheets are transferred in the same position to the grippers used for the next printing operation.
  • This difference in register obviously spoils the sheets of material being printed. It is then necessary to stop the press and alter the position of the second form with respect to the first form to eliminate the difierences in register. It is obvious that this procedure may have to be repeated several times until an exact register between the first and second inking is obtained. This, of course, means a considerable loss in time.
  • a transfer drum having conventional design is mounted in the frame of a rotary printing press and has an angular lever mechanism which includes a compression spring operation to effect an axial direction of the transfer drum.
  • a control gear mechanism is used to actuate the angular lever upon successive revolutions of the transfer drum. The drum moves in an axial direction on one revolution and then" returns to its original position on the next revolution.
  • Grippers and gripper support spindles are provided on the transfer drum. These grippers and gripper supports are movable between sliding surfaces on each end of the said drum.
  • Each of the grippers and gripper support spindles at each end operation exists in the change in shape and size of the sheets of material when they are subjected to special inks or the material is of a certain paper quality which undergoes alterations during processing.
  • the primary object of this invention is to eliminate the disadvantages attendant to well known commercially available rotary printing presses by creating the possibility for correcting the registry for the form cylinder while the press is running.
  • Another object of this invention is to provide a sheet transfer mechanism which is adjustable in both an axial and circumferential direction during the operation of the rotary printing press.
  • Another object of this invention is to provide a sheet transfer mechanism having an angular lever and control gear mechanism controlling a conventional transfer in an axial direction on successive revolutions of the said drum.
  • a still further object of this invention is to provide a conventional transfer drum with grippers and gripper support spindles which are shiftable between the two smooth sides of a slot and assembled in such a manner as to provide adjustment in a substantially circumferential direction to the sheets of material as they are moved from operation to operation.
  • a still further object of this invention is to provide a rotating gear mechanism which controls the movements of levers on separate revolutions to provide a definite rhythm with regard to the movements of the control levers.
  • the transfer drum moves separately in a substantially circumferential direction by way of levers which are indiv;;dually controlled with a control gear mechanism.
  • the grippers and gripper support spindles move in a substantially circumferential direction on one revolution and return to their initial position after the next revolution to transfer the next sheet of material from one segment of the rotary printing press to the next.
  • the rotating gear mechanisms of the transfer mechanism include an eccentric bolt, a control disk, and a shiftable bracket. These separate members are constructed with respect to each other in such a way that the control stroke produced by the levers may be set up in an infinite number of ways to obtain the required maximum.
  • FIG. 1 is a longitudinal sectional view along line I-I of FIG. 2 of a sheet transfer mechanism made in accordance with this invention
  • FIG. 2 is a cross-sectional view along line 11-" of FIG. 1.
  • FIG. 3 is a transverse sectional view of a controlled gearing mechanism for the same.
  • FIG. 4 is a cross-sectional view through the controlled gearing mechanism of FIG. 3.
  • FIG. I A sheet transfer mechanism made in accordance with this invention is shown in FIG. I and includes a sheet transfer drum having an axle 1.
  • the drum as shown in FIG. 1 also includes bearing bodies 2 and 3 which are fixed by means of pins 4.
  • Each end of the axle l is mounted in a side frame 7 of a printing press.
  • Bearing brackets 6 position bearings 5 around each end of the axle l which is within the said side frame 7.
  • the structure is identical with regard to bearings 5, brackets 6 and side frame 7 at each end of the axle 1.
  • Adjustable spur gears 8 and 9 are secured to the body of the bearing 2 by means of screws 10.
  • the transfer drum of FIG. 1 is driven by way of the spur gears 8 and 9.
  • the use of the spur gears 8 and 9 for this purpose avoids backlash during the operation of the transfer drum of FIG. 1.
  • Sheet grippers (not shown) are mounted on the gripper spindle l1.
  • Gripper supports (not shown) are mounted on the An angular lever 17 having two legs is secured to a bearing holder by means of a bolt 16 at each side of the transfer drum as shown in FIG. 1.
  • a roller 20 is mounted on the other leg of the angular lever 17.
  • the roller 20 is located adjacent to a flange 21 which is secured to the end of the transfer drum axle 1.
  • a pressure spring 22 surrounds the end of the axle 1 inside the bearing holder 15. This pressure spring 22 insures the contacting of the roller 20 with the flange 21.
  • Pressure spring 22 is mounted at the end of the axle 1 between the inside surface of the bearing holder 15 and a plate 23 supported by a thrust bearing 24.
  • the pressure spring 22 has a tendency to shift the axle 1 against the pressure of the roller 20 when the axle 2 is shifted along a longitudinal axial direction.
  • a control pulse is effected on the axle 1 by way of the contact roller 20 and the flange 21.
  • the structure as shown in FIG. 2 is used to either correct the position of the sheet being transferred in a circumferential direction or for locating the sheet into an oblique position.
  • the gripper spindle 11 and the gripper support spindle 12 are each moved about in a bearing 25 in which the ends of gripper spindle l1 and support spindle 12 are mounted.
  • a bearing 25 is located at each end of the transfer drum as part of the circumferential correction mechanism.
  • the gripper support spindle 12 has cambered ends 26 and is located within a notch structure (unnumbered) in the lever 27.
  • the bearing 25 is movably mounted between two straight countersurfaces 28 and 28'.
  • a straight countersurface 28 is located along each of the bearing bodies 2 and 3 at either end of the transfer drum of this invention.
  • a straight countersurface 28' is located on a bridge structure 29 which is firmly connected to the bearing body 2 by means of screws 30.
  • a lever 27 is located at each end of the transfer drum of this invention by way of bushings 32 and bolts 31 and 31' and is pivotal around the said bolts 31 and 31 by way of the bushings 32.
  • the lever 27 has a notched structure (unnumbered) at one end thereof and a roller 33 mounted to the other end by means of a bolt 34.
  • Control rings 35 and 36 are located at each end of the transfer drum and are in contact with the rollers 33 located at the end of the lever 27.
  • a pressure is exerted on the lever 27 by means of the compression spring 38 mounted on spring rod 39.
  • the spring rod 39 is attached to bolt 37 which is secured to the lever 27.
  • the other end of the spring rod 39 is connected to bolt 40 which is secured to the bearing body 2.
  • the control rings 35 and 36 have a coaxial center M "which corresponds to the center of the transfer drum of the invention when the said rings 35 and 36 are in zero position.
  • the control rings 35 and 36 pivot on a spindle 41 which is mounted in the framework of the printing press.
  • a roller 42 is secured by a bolt 43 to the outer circumference of the control rings 35 and 36.
  • a spring rod is secured to the outer circumference of the control rings 35 and 36 by bolt 45 and carries a pressure spring 46.
  • the pressure spring 46 is supported at the side frame of the machine of this invention on a counterbearing (not shown). Pressure spring 46 causes the roller 42 to be pressed on a circular runway 47 located on the control disk 19.
  • the control disks 35 and 36 are not necessary for controlling the side register and axial movement of the transfer drum by way of the angular lever 17 because the roller 18 on the angular lever 17 may be supported directly on the runway 47 ofthe control disk 1
  • the gearing for the control disk is shown in FIG. 4.
  • the disk 19 is connected to a drive gear 51 by means of a bolt 49 and a needle bearing 50.
  • a drive gear 51 is mounted in a needle bearing 52 on a bearing body 53 which is secured to the side frame 7.
  • the drive gear 51 which is driven by a gear train (not shown), turns on the axle 54.
  • This axle 54 corresponds to that of the control disk 19 in its zero position.
  • the control disk 19 is secured to the drive gear 51 with the bolts 55. This method of mounting control disk 19 allows a forward pivoting of the said control disk 19 by way of slots 56.
  • the control disk 19 is positioned on a square bearing 59 by bolt 49 and by ball bearings 57 which are secured to the control disk 19 by means of bolts 58.
  • the square bearing 59 is pivoted to a control cam 61 by means of ball bearings 60.
  • the control cam 61 is movable in an axial direction of bolt 62 which is secured in the bearing body 53.
  • An eccentric bolt 63 is used to move the cam 61 in said axial direction by turning a handwheel which is not shown in the drawing.
  • the eccentric head 64 of bolt 63 can be turned inside a recess 65 which is located adjacent the control cam 61. The said head 64 is arranged in a position free from play.
  • a sheet transfer mechanism for sheet fed rotary printing presses having at least two printing operations comprising:
  • said circumferential displacement means includes means rotatably mounting a lever on a drum bearing body at a point laterally displaced from the axis of said drum,
  • said control mechanism contact means includes a control ring rotatably mounted on said drum bearing body having an inner diameter surface in contact with a roller mounted on the other end of said lever,
  • said lever return means includes a compression spring mounted on a spring rod which is attached at one end thereof to said lever and at the other end thereof to said drum bearing body,
  • control mechanism further includes means mounting a control mechanism drive gear on a second bearing body which is secured to said printing press,
  • said drive gear m means movably mounting said control cam to said second bearing body in a direction normal to the axial direction of said bearing body,
  • a rotatable eccentric bolt means attached to said control cam to effect said directional movement to said control cam
  • p. means located at one end of an axle of said drum means to provide a lateral displacement to said sheet of material in correlation with revolutions of said drum means wherein said lateral displacement means includes an angular lever carrying means on one end thereof to movably contact a flange portion located on said end of said axle.
  • said drive gear mounting means includes needle bearings located between said drive gear and said second bearing body,
  • control disc mounting means includes a single bolt means fixed to said drive gear and carrying a needle bearing around which said control disc is mounted, at least on one bolt means fixedly attached to either said drive gear or said control disc and projecting through slots corresponding in position on the adjacent control disc or drive gear, and
  • said drive gear mounting means have the same construction as used for the circumferential control mechanism.
  • a sheet transfer mechanism comprising:
  • a. transfer drum means disposed on an axle between said first and second printing means for effecting transfer of a sheet of material from one printing operation to another
  • said transfer drum means being movable along its longitudinal axis
  • said circumferential displacement means includes a control means secured to said printing press for providing an operational impulse to effect circumferential displacement of said sheet of material on said transfer drum means.
  • said lateral displacement means includes a control means secured to said printing press for providing an operational impulse to effect lateral displacement of said sheet of material on said transfer drum means.
  • said circumferential displacement means includes means to shift the position of the sheet of material on the transfer drum in peripheral and diagonal directions with respect to said drum means.
  • a sheet transfer mechanism for sheet fed rotary printing presses having at least a first and a second printing means for effecting at least two printing operations, said transfer mechanism comprising:
  • a transfer drum means mounted on an axle for movement along its longitudinal axis between the first and second printing means for effecting transfer of a sheet of material from one printing operation to another
  • a sheet transfer mechanism as defined in claim 7 wherein said lateral displacement means includes:
  • control mechanism to provide an operational impulse to said angular lever on a first revolution of said transfer drum means thereby moving the transfer drum means and providing a lateral displacement of the sheet of material
  • said transfer drum means is fixedly mounted on the axle and the axle is mounted for movement along the longitudinal axis of the transfer drum means
  • said flange portion being disposed on the end of said axle.
  • said flange contact means is a roller
  • said return means includes a bearing holder located at the end of said axle and fixedly attached to said rotary printing press and a thrust bearing means disposed on said axle to support a pressure spring between the bearing holder and said thrust bearing.
  • control mechanism includes:
  • control mechanism drive gear mounted on a bearing body which is secured to the printing press
  • control disk mounted on said drive gear to operably contact the other end of said angular lever
  • control disk being mounted on a square bearing which is pivoted to a control cam
  • control cam being mounted on said bearing body to move in a direction normal to the axial direction of said bearing body
  • a rotatable eccentric bolt means attached to the control cam for effecting the directional movement of said control cam
  • needle bearings are located between said drive gear and said bearing body
  • a single bolt means is fixed to said drive gear and carrying a needle bearing around which said control disk is mounted,
  • At least one bolt means is fixedly attached to either the drive gear or the control disk and projects through slots corresponding in position on the adjacent control disk or drive gear, respectively.
  • a transfer mechanism as defined in claim 7 wherein said circumferential displacement means include:
  • a gripper support spindle mounted in a movable bearing structure located on said drum bearing body
  • control mechanism contact means includes a control ring pivotally mounted on said drum bearing body and having an inner diameter surface in contact with a roller mounted on said other end of said lever.
  • said lever return means includes a compression spring mounted on a spring rod which is attached at one end thereof to said lever and at the other end thereof to said drum bearing body.
  • control mechanism includes:
  • control mechanism drive gear mounted on a second bearing body which is secured to said printing press
  • control disk movably mounted on said drive gear to operably contact said control ring
  • control disk being mounted on a square hearing which is pivoted to a control cam
  • control cam being mounted on said second bearing body to move in a direction normal to the axial direction of said second bearing body
  • a rotatable eccentric bolt means attached to the control cam for efiecting the directional movement of said control cam
  • a control means is secured to said printing press for providing an operational impulse to said lateral displacement means and said circumferential displacement means on a first revolution of said transfer drum means.

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  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Electrostatic Charge, Transfer And Separation In Electrography (AREA)
US756960A 1967-09-04 1968-09-03 Sheet transfer mechanism for sheet fed rotary printing presses Expired - Lifetime US3614092A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1611287 1967-09-04

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US3614092A true US3614092A (en) 1971-10-19

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US756960A Expired - Lifetime US3614092A (en) 1967-09-04 1968-09-03 Sheet transfer mechanism for sheet fed rotary printing presses

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US (1) US3614092A (de)
CH (1) CH485521A (de)
FR (1) FR1578652A (de)
GB (1) GB1222256A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3788638A (en) * 1971-01-29 1974-01-29 Baeuerle Gmbh Mathias Roller arrangement, in particular for paper folding, creasing and like machines
US3822644A (en) * 1972-10-30 1974-07-09 American Bank Note Co Apparatus for maintaining registry between the plates of a multiple plate cylinder press and sheets supplied thereto
US5156392A (en) * 1991-10-10 1992-10-20 Xerox Corporation Moving edge side registration device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3430131A1 (de) * 1984-08-16 1986-02-27 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Bogenuebertragungszylinder in bogenrotationsdruckmaschinen
CN110540085B (zh) * 2019-09-01 2020-12-22 陕西烟印包装科技有限责任公司 一种印刷机械导向式移动的拉料装置

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1029760A (en) * 1907-07-10 1912-06-18 Union Paper Bag Machine Co Feed mechanism.
US1292968A (en) * 1912-05-13 1919-01-28 Miehle Printing Press & Mfg Sheet-registering mechanism.
US1324251A (en) * 1919-12-09 henderson
US1430223A (en) * 1922-05-10 1922-09-26 Evans Arthur Burroughes Sheet-feeding mechanism for printing presses
US2143514A (en) * 1938-02-23 1939-01-10 Cottrell C B & Sons Co Sheet feed mechanism for printing presses
US2474150A (en) * 1946-03-29 1949-06-21 Miehle Printing Press & Mfg Sheet transfer gripper mechanism
US2754118A (en) * 1953-04-07 1956-07-10 Michle Printing Press & Mfg Co Method of and means for registering and transferring lapped sheets
US2880999A (en) * 1956-05-11 1959-04-07 Ibm Record card in-flight aligner and advancing mechanism
US2899203A (en) * 1959-08-11 Bottner

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1324251A (en) * 1919-12-09 henderson
US2899203A (en) * 1959-08-11 Bottner
US1029760A (en) * 1907-07-10 1912-06-18 Union Paper Bag Machine Co Feed mechanism.
US1292968A (en) * 1912-05-13 1919-01-28 Miehle Printing Press & Mfg Sheet-registering mechanism.
US1430223A (en) * 1922-05-10 1922-09-26 Evans Arthur Burroughes Sheet-feeding mechanism for printing presses
US2143514A (en) * 1938-02-23 1939-01-10 Cottrell C B & Sons Co Sheet feed mechanism for printing presses
US2474150A (en) * 1946-03-29 1949-06-21 Miehle Printing Press & Mfg Sheet transfer gripper mechanism
US2754118A (en) * 1953-04-07 1956-07-10 Michle Printing Press & Mfg Co Method of and means for registering and transferring lapped sheets
US2880999A (en) * 1956-05-11 1959-04-07 Ibm Record card in-flight aligner and advancing mechanism

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3788638A (en) * 1971-01-29 1974-01-29 Baeuerle Gmbh Mathias Roller arrangement, in particular for paper folding, creasing and like machines
US3822644A (en) * 1972-10-30 1974-07-09 American Bank Note Co Apparatus for maintaining registry between the plates of a multiple plate cylinder press and sheets supplied thereto
US5156392A (en) * 1991-10-10 1992-10-20 Xerox Corporation Moving edge side registration device

Also Published As

Publication number Publication date
GB1222256A (en) 1971-02-10
FR1578652A (de) 1969-08-14
CH485521A (de) 1970-02-15

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