US3199452A - Foil clamping devices for clamping printing foils on the cylinder of duplicating machines - Google Patents
Foil clamping devices for clamping printing foils on the cylinder of duplicating machines Download PDFInfo
- Publication number
- US3199452A US3199452A US139689A US13968961A US3199452A US 3199452 A US3199452 A US 3199452A US 139689 A US139689 A US 139689A US 13968961 A US13968961 A US 13968961A US 3199452 A US3199452 A US 3199452A
- Authority
- US
- United States
- Prior art keywords
- shaft
- grippers
- foil
- cylinder
- clamping
- Prior art date
- 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
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41L—APPARATUS OR DEVICES FOR MANIFOLDING, DUPLICATING OR PRINTING FOR OFFICE OR OTHER COMMERCIAL PURPOSES; ADDRESSING MACHINES OR LIKE SERIES-PRINTING MACHINES
- B41L29/00—Devices for attaching printing elements or formes to supports
- B41L29/12—Devices for attaching printing elements or formes to supports for attaching flexible printing formes
- B41L29/14—Clamping devices
- B41L29/16—Clamping devices operating automatically during operation of rotary machines to attach the printing formes to the forme cylinders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41L—APPARATUS OR DEVICES FOR MANIFOLDING, DUPLICATING OR PRINTING FOR OFFICE OR OTHER COMMERCIAL PURPOSES; ADDRESSING MACHINES OR LIKE SERIES-PRINTING MACHINES
- B41L11/00—Apparatus for directly duplicating from hectographic masters in mirror image, i.e. "wet duplicators" for producing positive copies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41L—APPARATUS OR DEVICES FOR MANIFOLDING, DUPLICATING OR PRINTING FOR OFFICE OR OTHER COMMERCIAL PURPOSES; ADDRESSING MACHINES OR LIKE SERIES-PRINTING MACHINES
- B41L19/00—Duplicating or printing apparatus or machines for office or other commercial purposes, of special types or for particular purposes and not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41L—APPARATUS OR DEVICES FOR MANIFOLDING, DUPLICATING OR PRINTING FOR OFFICE OR OTHER COMMERCIAL PURPOSES; ADDRESSING MACHINES OR LIKE SERIES-PRINTING MACHINES
- B41L29/00—Devices for attaching printing elements or formes to supports
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41L—APPARATUS OR DEVICES FOR MANIFOLDING, DUPLICATING OR PRINTING FOR OFFICE OR OTHER COMMERCIAL PURPOSES; ADDRESSING MACHINES OR LIKE SERIES-PRINTING MACHINES
- B41L29/00—Devices for attaching printing elements or formes to supports
- B41L29/12—Devices for attaching printing elements or formes to supports for attaching flexible printing formes
- B41L29/14—Clamping devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41L—APPARATUS OR DEVICES FOR MANIFOLDING, DUPLICATING OR PRINTING FOR OFFICE OR OTHER COMMERCIAL PURPOSES; ADDRESSING MACHINES OR LIKE SERIES-PRINTING MACHINES
- B41L39/00—Indicating, counting, warning, control, or safety devices
Definitions
- the invention relates to foil clamping devices for clamping printing foils on the cylinder of duplicating machines, more particularly offset printing machines.
- a plurality of foils of the same or different sizes are clamped to a cylinder, such as the plate cylinder in an offset printing machine at their front edges in a coincident position by means of grippers which are held in the closed position by springs.
- Some of the grippers open earlier and close later than the other grippers, and some of the grippers open before the others and close after the latter, so that after a foil has been clamped beneath the first-closing grippers a second foil can be clamped, independently of the first foil, beneath the grippers which close thereafter, and can be removed in the reverse sequence.
- the object of this arrangement is to enable the text to be altered or masked as required during a run of the machine, by masking portions of the text of the first foil by means of one or more foils or foil portions with or without :a text, so that the part of the first foil masked by the second foil or foils is not printed or is replaced by a text on the masking portion or portions.
- the procedure adopted when using this equipment is such that first part of the run is printed with the first foil and then part of the first foil is masked and another part of the run is printed. Naturally, part of the run may first be printed with the first foil masked by the second foil, whereupon the second foil is removed and another part of the run is continued with the first foil.
- the problem of tightly and immovably clamping one or more foils or foil portions over a first foil at any desired place independently of the width of said foil portions is solved by mounting the grippers so as to be rotatable on a shaft and by associating with each gripper a cam arrangement which is rigidly connected to the shaft which, by means of an adjustable driver, opens the gripper to a varying degree according to the adjustment of said driver, so that when the gripper shaft is partially rotated the adjusted grippers open first, followed by the non-adjusted grippers, the bearings for the grippers being axially slidable in a groove on the shaft.
- FIG. 1 shows the position of the foil clamping device as applied to an offset printing machine
- FIG. 2 shows the non-adjusted grippers in the open position for the accommodation of the first foil F, and the adjusted grippers for the accommodation of the second foil, the first foil F being situated at the front stop ready for clamping;
- FIG. 3 shows the first foil F in the clamped position and also shows the grippers adjusted for receiving the second foil
- FIG. 4 shows in the closed state the non-adjusted grippers for accommodation of the first foil and the grippers adjusted for the accommodation of the second foil, the two foils F being in the clamped position;
- FIG. 5 is a side view of a gripper with its position on the shaft and means for effecting axial adjustment of the gripper bearings on the shaft, and
- FIG. 6 is a partial plan view of the gripper shown in FIG. 5.
- a cam device 4 and a lock 11 are fixed on a shaft 3 mounted in the cylinder of a printing machine.
- Grippers 1 and 1' are pivotal on the shaft 3 and are held in the closed position by tension springs 2.
- the grippers 1 can be adjusted for earlier opening as required by turning a driver head 8 of an adjustable driver 6 and the grippers 1' for later opening.
- the lock 11 is opened by rotation of the shaft 3 by said linkage so that the pressure of the cam device 4 against the grippers 1 moves these grippers 1 against the action of a spring 2 and a pawl .10 drops into a first recess 23 of the look 11, FIG. 3.
- the driver head 8 of the non-selected grippers 1' drops into a slot 9 in the grippers 1' and thus the non-selected grippers 1' remain in the closed position.
- the lock 11 is further rotated and opens the non-selected grippers 1 and the pawl 10 drops into the next recess 22 of the lock 11.
- the grippers 1 are held in the open position by this pawl 10. In this position, the foil P, which is passed to the grippers over a lay, is supplied to the grippers 1.
- a lever 12 is operated and lifts the pawl 14) from the recess in the lock 11, and under the action of the spring 2 the grippers 1 are brought into the closed position and clamp the foil F. Printing of part of the run of the machine can now be begun.
- the linkage 5 is operated as already described, so that only the grippers 1 which are adjusted for early opening, are opened.
- the second foil F can now be supplied by way of the lay. Closing of the grippers 1 is then effected in the manner already described.
- gripper bearings '7 with the grippers 1 and the cam device 4 are axially slidable in a groove 20 in the shaft 3 as will be clear from FIG. 5, so that the grippers can be used at any desired place on the front edge of the foil.
- a locking set screw 21 on each bearing cooperates with the groove 20 to fix the grippers at any desired place.
- a clamping device for clamping printing foils on a cylinder of a duplicating machine such as an offset printing machine comprising a cylinder, a rotatable shaft thereon, means for rotating the shaft, a row of grippers rotatably mounted on said shaft for clamping foils on said cylinder; each gripper having spring means I 0 associated therewith for maintaining the gripper in a closed position, and a cam for each gripper fixed to the shaft for affecting an opening movement of its respective gripper upon rotation of the shaft, the cam comprising .a driver and means for adjusting the driver, so that a partial rotation of the shaft will cause selected grippers to either be opened or remain closed, depending upon the adjustment of their associateed drivers, and further rotation of the shaft will cause the remaining grippers to be opened.
- a clamping device for clamping printing foils on a cylinder of a duplicating machine such as an offset printving machine
- a cylinder a rotatable shaft thereon, means for rotating the shaft, a row of grippers rotatably mounted on said shaft for clamping foils on said cylinder; each gripper having spring means associated therewith for maintaining the gripper in a closed position, and a cam for each gripper fixed to the shaft for affecting an opening movement of its respective gripper 'upon rotation of the shaft, the cam comprising a driver and means for adjusting the driver, so that a partial rotation of the shaft will cause selected grippers to either be opened or remain closed, depending upon the adjustment of their associated drivers, and further rotation of the shaft will cause the remaining grippers to be opened, bearings for said grippers, said shaft having a longitudinally extending groove and a set screw in each bear- -ing cooperating with said groove to prevent rotation of said bearings while permitting axial adjustment along said shaft.
- a clamping device for clamping printing foils on a cylinder of a duplicating machine such as an offset printing machine comprising a cylinder, a rotatable shaft thereon, means for rotating the shaft, a row of grippers rotatably mounted on said shaft for clamping foils on said cylinder; each gripper having spring means associated therewith for maintaining the gripper in a closed position, and a cam for each gripper fixed to the shaft for affecting an opening movement of its respective gripper upon rotation of the shaft, the cam comprising a driver and means for adjusting the driver, so that a partial rotation of the shaft will cause selected grippers to either be opened or remain closed, depending upon the adjustment of their associated drivers, and further rotation of the shaft will cause the remaining grippers to be opened, said adjusting means comprising 'a head on each driver, a slot in each gripper, said head in one position resting on said gripper and in another position penetrating said slot.
- a clamping device for clamping printing foils on a cylinder of a duplicating machine such as an offset printing machine comprising a cylinder, a rotatable shaft hereon, means for rotating the shaft, a row of grippers rotatably mounted on said shaft for clamping foils on said cylinder; each gripper having spring means associated therewith for maintaining the gripper in a closed position, and a cam for each gripper fixed to the shaft for affecting an opening movement of its respective gripper upon rotation of the shaft, the cam comprising .a driver and means for adjusting the driver, so that a partial rotation of the shaft will cause selected grippers to either be opened or remain closed, depending upon the adjustment of their associated drivers, and further rotation of the shaft will cause the remaining grippers to 'be opened and means maintaining said grippers in open position comprising a pawl pivotally mounted on said cylinder, a lock fixed on said shaft, stops on said lock with which said pawl cooperates, and means for rotating said lock and thereby said shaft so that the grippers are held open by said
- a clamping device as set forth in claim 4 wherein said means for rotating said lock comprises a pivoted lever cooperating with said lock.
- a clamping device for clamping printing foils on a cylinder of a duplicating machine such as an offset printing machine comprising a cylinder, a rotatable shaft thereon, means for rotating the shaft, a row of grippers rotatably mounted on said shaft for clamping foils on said cylinder; each gripper having spring means associated therewith for maintaining the gripper in a closed position, and a cam for each gripper fixed to the shaft for affecting an opening movement of its respective gripper upon rotation of the shaft, the cam comprising a driver and means for adjusting the driver, so that a partial rotation of the shaft will cause selected grippers to either be opened or remain closed, depending upon the adjustment of their associated drivers, and further rotation of the shaft will cause the remaining grippers to be opened and means maintaining said grippers in open position comprising a pawl pivotally mounted on said cylinder, a lock fixed on said shaft, stops on said lock with which said pawl cooperates, and means for rotating said lock and thereby said shaft so that the grippers are held open by said pawl
Landscapes
- Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
- Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEG30808A DE1151000B (de) | 1960-10-28 | 1960-10-28 | Folienaufspannvorrichtung zum Aufspannen von Druckfolien auf den Formzylinder von Vervielfaeltigungsmaschinen |
Publications (1)
Publication Number | Publication Date |
---|---|
US3199452A true US3199452A (en) | 1965-08-10 |
Family
ID=7124098
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US139689A Expired - Lifetime US3199452A (en) | 1960-10-28 | 1961-09-21 | Foil clamping devices for clamping printing foils on the cylinder of duplicating machines |
Country Status (8)
Country | Link |
---|---|
US (1) | US3199452A (fr) |
AT (1) | AT243290B (fr) |
BE (1) | BE608734A (fr) |
CH (1) | CH396950A (fr) |
DE (1) | DE1151000B (fr) |
DK (1) | DK103566C (fr) |
GB (1) | GB934464A (fr) |
NL (2) | NL270033A (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4502388A (en) * | 1981-09-30 | 1985-03-05 | Ryobi Limited | Plate holding devices for offset duplicator |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3445886A1 (de) * | 1984-12-15 | 1986-06-26 | M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach | Greifervorrichtung fuer eine druckmaschine |
US4840121A (en) * | 1986-11-26 | 1989-06-20 | Am International, Inc. | Master holding mechanism for duplicating machines |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2088862A (en) * | 1935-06-15 | 1937-08-03 | Lang Karl Theodor | Printing machine |
US2329830A (en) * | 1940-10-24 | 1943-09-21 | Goss Printing Press Co Ltd | Rotary printing press |
US2689521A (en) * | 1952-04-24 | 1954-09-21 | Ritzerfeld Wilhelm | Master and block-out sheet gripper means for rotary duplicating machines |
US2880670A (en) * | 1954-09-22 | 1959-04-07 | Block & Anderson Ltd | Master clip arrangements for hectographic duplicating machines |
US2937593A (en) * | 1954-12-23 | 1960-05-24 | Ritzerfeld Wilhelm | Printing foil attaching arrangement |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1065859B (fr) * | 1959-09-24 | |||
CH235047A (de) * | 1938-01-18 | 1944-11-15 | Ritzerfeld Wilhelm | Verfahren und Druckmaschine zum ganzseitigen, zeilen- oder abschnittweisen Umdrucken von Druckformblättern. |
DE943649C (de) * | 1951-07-24 | 1956-05-24 | Roto Werke A G | Befestigungsvorrichtung fuer Druckformen |
DE1762043U (de) * | 1954-06-24 | 1958-02-27 | Gerhard Ritzerfeld | Rotationsvervielfaeltiger zum abdrucken von auf einer drucktrommel befestigten druckformfolien. |
US2925029A (en) * | 1958-02-13 | 1960-02-16 | Addressograph Multigraph | Printing machines |
NL6716091A (fr) * | 1967-11-27 | 1969-05-29 |
-
0
- NL NL120892D patent/NL120892C/xx active
- NL NL270033D patent/NL270033A/xx unknown
-
1960
- 1960-10-28 DE DEG30808A patent/DE1151000B/de active Pending
-
1961
- 1961-08-21 AT AT644061A patent/AT243290B/de active
- 1961-08-22 CH CH977961A patent/CH396950A/de unknown
- 1961-09-21 US US139689A patent/US3199452A/en not_active Expired - Lifetime
- 1961-09-28 GB GB34856/61A patent/GB934464A/en not_active Expired
- 1961-10-02 BE BE608734A patent/BE608734A/fr unknown
- 1961-10-20 DK DK417261AA patent/DK103566C/da active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2088862A (en) * | 1935-06-15 | 1937-08-03 | Lang Karl Theodor | Printing machine |
US2329830A (en) * | 1940-10-24 | 1943-09-21 | Goss Printing Press Co Ltd | Rotary printing press |
US2689521A (en) * | 1952-04-24 | 1954-09-21 | Ritzerfeld Wilhelm | Master and block-out sheet gripper means for rotary duplicating machines |
US2880670A (en) * | 1954-09-22 | 1959-04-07 | Block & Anderson Ltd | Master clip arrangements for hectographic duplicating machines |
US2937593A (en) * | 1954-12-23 | 1960-05-24 | Ritzerfeld Wilhelm | Printing foil attaching arrangement |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4502388A (en) * | 1981-09-30 | 1985-03-05 | Ryobi Limited | Plate holding devices for offset duplicator |
Also Published As
Publication number | Publication date |
---|---|
DK103566C (da) | 1966-01-24 |
DE1151000B (de) | 1963-07-04 |
NL120892C (fr) | |
AT243290B (de) | 1965-11-10 |
GB934464A (en) | 1963-08-21 |
CH396950A (de) | 1965-08-15 |
BE608734A (fr) | 1962-02-01 |
NL270033A (fr) |
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