US3417696A - Grippers with adjustable gripper pads - Google Patents

Grippers with adjustable gripper pads Download PDF

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US3417696A
US3417696A US513486A US51348665A US3417696A US 3417696 A US3417696 A US 3417696A US 513486 A US513486 A US 513486A US 51348665 A US51348665 A US 51348665A US 3417696 A US3417696 A US 3417696A
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Prior art keywords
sheet
gripper pads
grippers
gripper
plane
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US513486A
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Koch Werner
Preuss Friedrich
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Roland Offsetmaschinenfabrik Faber and Schleicher AG
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Roland Offsetmaschinenfabrik Faber and Schleicher AG
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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
    • B41F21/04—Grippers
    • B41F21/05—In-feed grippers
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H9/00—Registering, e.g. orientating, articles; Devices therefor

Definitions

  • the sheets are gripped at their front edges, at the pre-gripper respectively swing gripper, and also later at the impression cylinder and at the delivery chain, by a row of grippers which cooperate with gripper pads.
  • Each row forms a set of gripper pads which is usually mounted on a common rail, which in turn is secured to the .pregripper respectively swing grippers, to the impression cylinder, or to the delivery gripper system.
  • the invention overcomes these disadvantages by means of a device which is associated with each set of grippers to adjust the gripper pads along a bent or curved path perpendicular to the plane of the sheet.
  • the front edge of the sheet is thereby effectively shortened by the consequent deviation from a straight line.
  • the lateral edges of the sheet exert a pull on the rear edge of the sheet and cause a deformation and hence an alteration in the length of the rear edge of the sheet.
  • This deformation takes place precisely in the same manner as at the front edge of the sheet, in a plane substantially perpendicular to the plane of the sheet.
  • the required variation in the printing width is obtained transversely to the direction of travel of the sheet, nevertheless no deviation from a straight line occurs in the print.
  • the gripper pads of the set are secured to a resilient rail which can be bent by means of the device.
  • the rail may appropriately be screwed at its middle within the gap of the impression cylinder for example, While its two ends hang freely and are each bent up or down to a certain extent by a screw.
  • the required graduation in the bending can be achieved by appropriate reduction in the cross-section of the rail from the middle toward the two ends.
  • a plurality of gripper pads in a set are mounted on a common holder which can be displaced, by the device, out of a position in which the gripper pad faces lie parallel with the plane of the sheet, into a position in which the faces of the gripper pads lie in a plane which forms an acute angle with the plane of the sheet.
  • the arrangement is preferably such that the gripper pads are combined in three successive groups, of which the middle group is arranged parallel with the plane of the sheet, and the two outer groups are each secured to a common holder which is adjustable in each case by a device in such a manner that they lie at an acute angle to the plane of the sheet.
  • each gripper pad in the set is mounted for movement in a guide lying substantially perpendicular to the plane of the sheet and is adjustable by means of the device. As a result, the gripping surfaces of each gripper and its gripper pad remain parallel for relatively large setting distances, and the sheet is held uniformly tightly by the gripper over its whole width.
  • FIGURE 1 an end view of a gripper set mounted in an impression cylinder or a conveyor drum;
  • FIGURE 2 an end view of a gripper set in a preor swing-gripper
  • FIGURE 3 a set of gripper pads on a resilient rail in a cylinder (shown in section);
  • FIGURE 4 a set of gripper pads on a swivelling rail in a cylinder shown in lengthwise section;
  • FIGURE 5 gripper pads which are mounted in individual guides and which are adjusted by a swivelling rail in a cylinder shown in lengthwise section;
  • FIGURE 6 a detail of FIGURE 4, and in FIGURE 7 a detail of FIGURE 5.
  • an impression cylinder 1 of a printing press is provided in a known manner with a plurality of grippers 3 mounted on a gripper shaft 2. These grippers co-op-erate with gripper pads 4 which are secured to a rail 5.
  • the sheet grasped by the grippers 3 is designated by 6.
  • the same arrangement, as shown in FIGURE 2, is also usual with pre-grippcrs or swinggrippers 9 in which case the gripper pads 7 are secured to a rail 8.
  • the grippers 9 are mounted on a gripper shaft 10 which is mounted in levers 12 secured to a shaft 11.
  • the sheet is designated by 13.
  • the gripper pads 14- are mounted on a resilient rail 15 which is secured to the cylinder 1 by means of screws 16.
  • the rail can be bent upwards at its ends in a plane substantially perpendicular to the plane of a sheet around the cylinder.
  • the setting of the screws 17 is locked by means of the lock nuts 18.
  • the required graduation of the bending of the rail can be achieved by reducing the cross-section of the rail 15 from the middle towards the two ends, by providing a single notch 19, or a plurality of notches 20 of different depths.
  • FIG- URE 4 shows the right-hand half of a set of gripper pads.
  • the six middle gripper pads 21 are not adjustable, supporting rail 22 being firmly screwed to the cylinder 1.
  • the four outer gripper pads 23 at each end of the set are mounted on a rail 24 which can be swivelled upward about a hinge pin 25 by means of a lockable screw 26 and against the downward action of a compression spring 27 as is shown also in FIGURE 6.
  • the gripping surfaces of the gripper pads 23 may lie on the line such as 28 for example.
  • the position of the rail 24 can be locked by means of a Screw 29.
  • FIGURE 5 which likewise shows the right-hand half of a set of gripper pads
  • the gripper pads 30 are mounted for movement in their axial direction by being guided in slots in a holding rail 31 and are urged downwards by means of springs 32.
  • springs 32 engage an adjusting device in the form of a rail 34 which can be swivelled about a hinge pin 33. Pivoting of rail 34 is effected by turning a set screw 35 while a compression spring 36 ensures contact between the screw 35 and a wall of the cylinder gap.
  • a gripping device of a sheet-feeding press comprising in combination:
  • support means for the gripper pads said support means including a flexible rail mounting said row of gripper pads;
  • adjustment means for adjusting the positions of the gripper pads in a plane substantially normal to the plane of a sheet gripped between the grippers and the gripper pads, said adjustment means including flexing means for flexing said rail into a selected bent configuration in said plane substantially normal to the sheet plane thereby correspondingly varying the positions of the gripper pads in reference to said sheet plane.
  • a gripping device comprising fastening means securing said rail intermediate its ends to a stationary point of support, and adjustable abutment means at each end of said rail, the position of said abutment means being selectively adjustable in said plane normal to the sheet plane in reference to said stationary point of support for flexing said rail in accordance with the positioning of the abutment means.
  • a gripping device comprising:
  • a gripping device according to claim 1 wherein the cross-sectional outline of said raii varies along the length thereof to impart to the rail predetermined bending characteristics in response to an actuation of said flexing means.
  • a gripping device according to claim 1, wherein said rail includes at least one notch in one of its lengthwise sides to impart to the rail predetermined bending characteristics in response to an actuation of said flexing means.
  • a gripping device of a sheet-feeding press comprising in combination:
  • said support means for said row of gripper pads, said support means including a bar having said gripper pads fixedly secured thereto and mounted pivotal in a plane substantially normal to the plane of a sheet gripped between the grippers and the gripper pads, between a position in which surfaces of the gripper pads coacting with the grippers are substantially Cir parallel to said plane of the sheet and a position in which said surfaces define an acute angle with said sheet plane; and
  • a gripping device of a sheet-feeding press comprising in combination:
  • support means supporting the intermediate one of said groups in spatially fixed positions with reference to said sheet plane
  • each of said mounting means supporting the respective holder pivotal between a position in which surfaces of the gripper pads coacting with the grippers are substantially parallel to the plane of a sheet gripped between the grippers and the gripper pads and a position in which said gripper pad surfaces define an acute angle with said sheet plane.
  • a gripping device of a sheet-feeding press comprising in combination:
  • support means including an elongate guide member supporting at least some of said gripper pads, said guide member being disposed in a plane parallel to the plane of a sheet gripped between the grippers and the gripper pads, the gripper pads supported by the guide member being each dislaceable in the same in a direction substantially normal to said sheet plane for selectively varying the distance between said gripper pads and said sheet plane;
  • pivot means pivotally supporting said control bar at one end thereof;
  • adjustment means coacting with said control bar for placing the same in a selected angular position in reference to the sheet plane, said adjustment means including spring means engaging said control bar to bias the same toward the selected angular position, and adjustable setting means engaging said bar for retaining the same in a selected position against the action of said spring means thereby correspond ingly varying the positions of the gripper pads in the guide member.

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  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)

Description

Dec. 24, 1968 w. KOCH ETAL I 3,417,696
GRIPPERS WITH ADJUSTABLE GRIPPER PADS FOR SHEET PRINTING Filed Dec. 13, 1965 Inventors.
WER ER Koeu Ann YWQBMQ. QR u-ss BY QM; and) United States Patent 8 Claims. of. 101 409 ABSTRACT OF THE DISCLOSURE A gripping device for a sheet-feeding press in which a row of grippers and a corresponding row of gripper pads coact with each other for gripping therebetween the leading edge of a sheet to be worked on in the press. The positions of the gripper pads are jointly or individually adjustable in a plane substantially normal to the plane of a gripped sheet.
In sheet-fed printing presses, the sheets are gripped at their front edges, at the pre-gripper respectively swing gripper, and also later at the impression cylinder and at the delivery chain, by a row of grippers which cooperate with gripper pads. Each row forms a set of gripper pads which is usually mounted on a common rail, which in turn is secured to the .pregripper respectively swing grippers, to the impression cylinder, or to the delivery gripper system.
In indirect printing, as a result of the bulge formation at the contact zone between the blanket and impression cylinders, severe stressing of the paper occurs which leads to differences in register at the end of the sheet, particularly with sheets of large size and with papers of low strength.
It has already been proposed to compensate for these differences by deformation of the front edge of the sheet. Such deformation is carried out in the plane of the sheet whereby the registerof the impression is disturbed at the front edge of the sheet. The greater accuracy of register achieved at the end of the sheet is obtained at the expense of a faulty register at the front edge of the sheet.
The invention overcomes these disadvantages by means of a device which is associated with each set of grippers to adjust the gripper pads along a bent or curved path perpendicular to the plane of the sheet. The front edge of the sheet is thereby effectively shortened by the consequent deviation from a straight line. As a result the lateral edges of the sheet exert a pull on the rear edge of the sheet and cause a deformation and hence an alteration in the length of the rear edge of the sheet. This deformation takes place precisely in the same manner as at the front edge of the sheet, in a plane substantially perpendicular to the plane of the sheet. As a result, although the required variation in the printing width is obtained transversely to the direction of travel of the sheet, nevertheless no deviation from a straight line occurs in the print.
According to the invention, in one embodiment there is provided that the gripper pads of the set are secured to a resilient rail which can be bent by means of the device. Thus a simple, robust structure is obtained. In this case, the rail may appropriately be screwed at its middle within the gap of the impression cylinder for example, While its two ends hang freely and are each bent up or down to a certain extent by a screw. The required graduation in the bending can be achieved by appropriate reduction in the cross-section of the rail from the middle toward the two ends.
In another embodiment of the invention it is provided that a plurality of gripper pads in a set are mounted on a common holder which can be displaced, by the device, out of a position in which the gripper pad faces lie parallel with the plane of the sheet, into a position in which the faces of the gripper pads lie in a plane which forms an acute angle with the plane of the sheet. In this case, the arrangement is preferably such that the gripper pads are combined in three successive groups, of which the middle group is arranged parallel with the plane of the sheet, and the two outer groups are each secured to a common holder which is adjustable in each case by a device in such a manner that they lie at an acute angle to the plane of the sheet. The adjustment of only a few gripper pads at the ends in each case, which is sufficient in many cases, is thus obtained with very simple means.
In a further embodiment, it is provided that each gripper pad in the set is mounted for movement in a guide lying substantially perpendicular to the plane of the sheet and is adjustable by means of the device. As a result, the gripping surfaces of each gripper and its gripper pad remain parallel for relatively large setting distances, and the sheet is held uniformly tightly by the gripper over its whole width.
Several embodiments of the invention are illustrated diagrammatically in the accompanying drawings which show in:
FIGURE 1 an end view of a gripper set mounted in an impression cylinder or a conveyor drum;
FIGURE 2 an end view of a gripper set in a preor swing-gripper;
FIGURE 3 a set of gripper pads on a resilient rail in a cylinder (shown in section);
FIGURE 4 a set of gripper pads on a swivelling rail in a cylinder shown in lengthwise section;
FIGURE 5 gripper pads which are mounted in individual guides and which are adjusted by a swivelling rail in a cylinder shown in lengthwise section;
FIGURE 6 a detail of FIGURE 4, and in FIGURE 7 a detail of FIGURE 5.
According to FIGUREI, an impression cylinder 1 of a printing press is provided in a known manner with a plurality of grippers 3 mounted on a gripper shaft 2. These grippers co-op-erate with gripper pads 4 which are secured to a rail 5. The sheet grasped by the grippers 3 is designated by 6. The same arrangement, as shown in FIGURE 2, is also usual with pre-grippcrs or swinggrippers 9 in which case the gripper pads 7 are secured to a rail 8. The grippers 9 are mounted on a gripper shaft 10 which is mounted in levers 12 secured to a shaft 11. The sheet is designated by 13.
In the embodiment of the invention shown in FIGURE 3, the gripper pads 14- are mounted on a resilient rail 15 which is secured to the cylinder 1 by means of screws 16. By turning screws 17, the rail can be bent upwards at its ends in a plane substantially perpendicular to the plane of a sheet around the cylinder. The setting of the screws 17 is locked by means of the lock nuts 18. The required graduation of the bending of the rail can be achieved by reducing the cross-section of the rail 15 from the middle towards the two ends, by providing a single notch 19, or a plurality of notches 20 of different depths.
The embodiment of the invention, as shown in FIG- URE 4 shows the right-hand half of a set of gripper pads. The six middle gripper pads 21 are not adjustable, supporting rail 22 being firmly screwed to the cylinder 1. However, the four outer gripper pads 23 at each end of the set are mounted on a rail 24 which can be swivelled upward about a hinge pin 25 by means of a lockable screw 26 and against the downward action of a compression spring 27 as is shown also in FIGURE 6. The gripping surfaces of the gripper pads 23 may lie on the line such as 28 for example. The position of the rail 24 can be locked by means of a Screw 29.
In the embodiment shown in FIGURE 5, which likewise shows the right-hand half of a set of gripper pads, and in FIGURE 7, the gripper pads 30 are mounted for movement in their axial direction by being guided in slots in a holding rail 31 and are urged downwards by means of springs 32. As a result, they engage an adjusting device in the form of a rail 34 which can be swivelled about a hinge pin 33. Pivoting of rail 34 is effected by turning a set screw 35 while a compression spring 36 ensures contact between the screw 35 and a wall of the cylinder gap.
What we claim is:
1. A gripping device of a sheet-feeding press, said gripping device comprising in combination:
a row of grippers;
a corresponding row of gripper pads coacting with said grippers for gripping therebetween the leading edge of a sheet to be worked on in the press;
support means for the gripper pads, said support means including a flexible rail mounting said row of gripper pads; and
adjustment means for adjusting the positions of the gripper pads in a plane substantially normal to the plane of a sheet gripped between the grippers and the gripper pads, said adjustment means including flexing means for flexing said rail into a selected bent configuration in said plane substantially normal to the sheet plane thereby correspondingly varying the positions of the gripper pads in reference to said sheet plane.
2. A gripping device according to claim 1 wherein said flexing means comprise fastening means securing said rail intermediate its ends to a stationary point of support, and adjustable abutment means at each end of said rail, the position of said abutment means being selectively adjustable in said plane normal to the sheet plane in reference to said stationary point of support for flexing said rail in accordance with the positioning of the abutment means.
3. A gripping device according to claim 2, wherein said adjustable abutment means comprise set screws threaded into said rail ends and resting at one end upon a stationary support.
4. A gripping device according to claim 1 wherein the cross-sectional outline of said raii varies along the length thereof to impart to the rail predetermined bending characteristics in response to an actuation of said flexing means.
5. A gripping device according to claim 1, wherein said rail includes at least one notch in one of its lengthwise sides to impart to the rail predetermined bending characteristics in response to an actuation of said flexing means. i
6. A gripping device of a sheet-feeding press, said gripping device comprising in combination:
a row of grippers; v
a corresponding row of gripper pads coacting with said grippers for gripping therebetween the leading edge of a sheet to be worked on in the press;
support means for said row of gripper pads, said support means including a bar having said gripper pads fixedly secured thereto and mounted pivotal in a plane substantially normal to the plane of a sheet gripped between the grippers and the gripper pads, between a position in which surfaces of the gripper pads coacting with the grippers are substantially Cir parallel to said plane of the sheet and a position in which said surfaces define an acute angle with said sheet plane; and
retaining means coacting with said bar for retaining the same in the selected pivotal position.
7. A gripping device of a sheet-feeding press, said grip-ping device comprising in combination:
a row of grippers;
a corresponding row of gripper pads coacting with said grippers for gripping therebetween the leading edge of a sheet to be worked on in the press, said gripper pads being divided into three groups;
support means supporting the intermediate one of said groups in spatially fixed positions with reference to said sheet plane;
a holder for each of the outer groups; and
mounting means for each of said holders, each of said mounting means supporting the respective holder pivotal between a position in which surfaces of the gripper pads coacting with the grippers are substantially parallel to the plane of a sheet gripped between the grippers and the gripper pads and a position in which said gripper pad surfaces define an acute angle with said sheet plane.
8. A gripping device of a sheet-feeding press, said gripping device comprising in combination:
a row of grippers;
a corresponding row of gripper pads coacting with said grippers for gripping therebetween the leading edge of a sheet to be worked on in the press;
support means including an elongate guide member supporting at least some of said gripper pads, said guide member being disposed in a plane parallel to the plane of a sheet gripped between the grippers and the gripper pads, the gripper pads supported by the guide member being each dislaceable in the same in a direction substantially normal to said sheet plane for selectively varying the distance between said gripper pads and said sheet plane;
a common control bar disposed in engagement with the end of each of the supported gripper pads opposite to the end facing the guide member;
pivot means pivotally supporting said control bar at one end thereof; and
adjustment means coacting with said control bar for placing the same in a selected angular position in reference to the sheet plane, said adjustment means including spring means engaging said control bar to bias the same toward the selected angular position, and adjustable setting means engaging said bar for retaining the same in a selected position against the action of said spring means thereby correspond ingly varying the positions of the gripper pads in the guide member.
References Cited UNITED STATES PATENTS 1,208,731 12/1916 Blaine 101-412 1,271,329 7/1918 Kyle 101-412 1,296,008 3/1919 Rich 101412 1,914,456 6/1933 Parker et al 10l412 2,577,099 12/1951 Albrecht 101183 3,125,022 3/1964 Reinartz et al 10l4l0 X 3,332,345 7/1967 Smyth 101409 ROBERT E. PULFREY, Primary Examiner.
J. R. FISHER, Assistant Examiner.
US513486A 1964-12-17 1965-12-13 Grippers with adjustable gripper pads Expired - Lifetime US3417696A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DER39473A DE1259904B (en) 1964-12-17 1964-12-17 Device on the sheet guiding devices of a multi-color sheet-fed rotary printing press for influencing the registration of the prints

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3839959A (en) * 1971-11-15 1974-10-08 Roland Offsetmaschf Reciprocating gripper for feeding sheets in rotary printing machines
US4202268A (en) * 1973-11-22 1980-05-13 Heidelberger Druckmaschinen Aktiengesellschaft Transfer drum for printing presses with devices for gripping the leading and trailing edges of a sheet which is being imprinted
US4503772A (en) * 1981-04-21 1985-03-12 Komori Printing Machine Co., Ltd. Gripper pad height adjusting device for sheet-fed rotary printing presses
US4848230A (en) * 1987-07-02 1989-07-18 Heidelberger Druckmaschinen Ag Remotely controllable adjusting means for elastically deforming a register rail
US5284092A (en) * 1992-04-02 1994-02-08 Man Roland Druckmaschinen Ag Plate cylinder holder with slide rail circular bearing assembly
EP0685337A2 (en) * 1994-05-27 1995-12-06 MAN Roland Druckmaschinen AG Device for adjusting the gripper support for grippers in a turning cylinder of a perfecting printing machine
US5651544A (en) * 1995-02-04 1997-07-29 Heidelberger Druckmaschinen Ag Device for avoiding registration errors in a sheet-processing machine
US5749296A (en) * 1996-03-21 1998-05-12 Heidelberger Druckmaschinen Aktiengesellschaft Sheet transfer device of a sheet-fed rotary printing press

Families Citing this family (7)

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Publication number Priority date Publication date Assignee Title
DE1909795C2 (en) * 1969-02-27 1973-10-18 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Device on sheet transfer drums of multi-color sheet-fed rotary printing presses for register correction by deforming the leading edge of the sheet
DE2307126C3 (en) * 1973-02-14 1982-10-28 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8900 Augsburg Set-up on multi-color sheet-fed rotary offset printing machines in series design for correct transport
DE2759773C2 (en) * 1977-01-07 1983-01-20 Western Gear Corp., Pittsburgh, Pa. Sheet transfer drum for multi-color sheet-fed rotary printing machines that can be converted from perfect to perfect
DE2700419C3 (en) * 1977-01-07 1984-10-04 Miller Printing Equipment Corp., Pittsburgh, Pa. Sheet transfer cylinder for sheet-fed rotary printing machines that can be set to perfecting
DE2713994C2 (en) * 1977-03-30 1983-01-27 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8900 Augsburg Sheet holding device of a sheet-fed rotary printing machine, which is able to slightly deform the printed sheet
DE3428668A1 (en) * 1984-08-03 1986-02-13 Heidelberger Druckmaschinen Ag, 6900 Heidelberg DEVICE DRUM FOR SHEET PRINTING MACHINES, ESPECIALLY CARDBOARD MACHINES
CN109290781B (en) * 2018-10-26 2024-05-24 珠海智新自动化科技有限公司 Selenium drum scraper locking device

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US1208731A (en) * 1916-04-06 1916-12-19 Miehle Printing Press & Mfg Adjustable gripper-pad.
US1271329A (en) * 1916-04-14 1918-07-02 Miehle Printing Press & Mfg Adjustable gripper-pad.
US1296008A (en) * 1917-06-26 1919-03-04 Miehle Printing Press & Mfg Gripper-pad adjustment.
US1914456A (en) * 1930-06-10 1933-06-20 Linotype Machinery Ltd Sheet gripping device of printing machines
US2577099A (en) * 1946-06-14 1951-12-04 Hoe & Co R Method of and means for registering impressions in multiunit sheet printing machines
US3125022A (en) * 1964-03-17 Registering adjustment for multi-color printing
US3332345A (en) * 1965-05-24 1967-07-25 Improved Products Company Sheet alignment apparatus

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US1303793A (en) * 1919-05-13 henderson and b
FR464019A (en) * 1913-08-23 1914-03-11 Hermann Krieger Method and device for preventing the formation of folds in sheets and for preventing elongation of posterior corners of the sheet during printing
FR718444A (en) * 1930-06-10 1932-01-25 Linotype Machinery Ltd Improvements to sheet clamping devices for printing presses
DE725540C (en) * 1941-02-06 1942-09-24 E H Georg Spiess Dr Ing Device for eliminating passport differences
DE812431C (en) * 1949-12-13 1951-08-30 Johannisberg G M B H Maschf Adjustable gripper pads on vibration systems of sheet-fed printing machines
DE1175695B (en) * 1961-05-06 1964-08-13 Maschf Augsburg Nuernberg Ag Device on multi-color sheet-fed rotary printing machines for influencing the registration

Patent Citations (7)

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Publication number Priority date Publication date Assignee Title
US3125022A (en) * 1964-03-17 Registering adjustment for multi-color printing
US1208731A (en) * 1916-04-06 1916-12-19 Miehle Printing Press & Mfg Adjustable gripper-pad.
US1271329A (en) * 1916-04-14 1918-07-02 Miehle Printing Press & Mfg Adjustable gripper-pad.
US1296008A (en) * 1917-06-26 1919-03-04 Miehle Printing Press & Mfg Gripper-pad adjustment.
US1914456A (en) * 1930-06-10 1933-06-20 Linotype Machinery Ltd Sheet gripping device of printing machines
US2577099A (en) * 1946-06-14 1951-12-04 Hoe & Co R Method of and means for registering impressions in multiunit sheet printing machines
US3332345A (en) * 1965-05-24 1967-07-25 Improved Products Company Sheet alignment apparatus

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3839959A (en) * 1971-11-15 1974-10-08 Roland Offsetmaschf Reciprocating gripper for feeding sheets in rotary printing machines
US4202268A (en) * 1973-11-22 1980-05-13 Heidelberger Druckmaschinen Aktiengesellschaft Transfer drum for printing presses with devices for gripping the leading and trailing edges of a sheet which is being imprinted
US4503772A (en) * 1981-04-21 1985-03-12 Komori Printing Machine Co., Ltd. Gripper pad height adjusting device for sheet-fed rotary printing presses
US4848230A (en) * 1987-07-02 1989-07-18 Heidelberger Druckmaschinen Ag Remotely controllable adjusting means for elastically deforming a register rail
US5284092A (en) * 1992-04-02 1994-02-08 Man Roland Druckmaschinen Ag Plate cylinder holder with slide rail circular bearing assembly
USRE35647E (en) * 1992-04-02 1997-11-04 Man Roland Druckmaschinen Ag Plate cylinder holder with slide rail circular bearing assembly
EP0685337A2 (en) * 1994-05-27 1995-12-06 MAN Roland Druckmaschinen AG Device for adjusting the gripper support for grippers in a turning cylinder of a perfecting printing machine
EP0685337A3 (en) * 1994-05-27 1996-12-27 Roland Man Druckmasch Device for adjusting the gripper support for grippers in a turning cylinder of a perfecting printing machine.
US5651544A (en) * 1995-02-04 1997-07-29 Heidelberger Druckmaschinen Ag Device for avoiding registration errors in a sheet-processing machine
US5749296A (en) * 1996-03-21 1998-05-12 Heidelberger Druckmaschinen Aktiengesellschaft Sheet transfer device of a sheet-fed rotary printing press

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