US3276364A - Clamping device for an offset printing press - Google Patents

Clamping device for an offset printing press Download PDF

Info

Publication number
US3276364A
US3276364A US407412A US40741264A US3276364A US 3276364 A US3276364 A US 3276364A US 407412 A US407412 A US 407412A US 40741264 A US40741264 A US 40741264A US 3276364 A US3276364 A US 3276364A
Authority
US
United States
Prior art keywords
blanket
shaft
slot
cylinder
clamping device
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
Application number
US407412A
Inventor
Langer Karl
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.)
Roland Offsetmaschinenfabrik Faber and Schleicher AG
Original Assignee
Roland Offsetmaschinenfabrik Faber and Schleicher AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Roland Offsetmaschinenfabrik Faber and Schleicher AG filed Critical Roland Offsetmaschinenfabrik Faber and Schleicher AG
Application granted granted Critical
Publication of US3276364A publication Critical patent/US3276364A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F27/00—Devices for attaching printing elements or formes to supports
    • B41F27/12—Devices for attaching printing elements or formes to supports for attaching flexible printing formes
    • B41F27/1218—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices
    • B41F27/125—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices moving in the printing plate end on a curvilinear path, e.g. by winding on a roll

Definitions

  • the invention relates to a device for tautly clamping a blanket upon the blanket cylinder of an offset printing press and, more particularly, to a blanket clamping device for use with a cylinder having a lengthwise peripheral slot in which a clamping shaft or spindle is rotatably mounted, the ends of the blanket being held within the slot by the shaft.
  • a more specific object of the invention is :to provide a novel and improved clamping device of the general kind above referred to with which a blanket can be tautly clamped to the cylinder by simply inserting the two respective ends of the blanket into the device and turning the shaft thereof.
  • Another more specific object of the invention is to provide a novel and improved clamping device of the general kind above referred to which supports the shaft along its entire length, thereby preventing deformation of the shaft by its own weight or the pull of the taut blanket and also access of dust and abrasive particles to the bearings for the shaft in the cylinder slot.
  • a clamping shaft or spindle having a lengthwise peripheral slot of preferably substantially rectangular cross-section.
  • One of the edges of the shaft slot terminates in an inwardly turned flange which is engageable with a shoulder along one end of the blanket upon insertion of said end into the shaft slot.
  • the other side of said blanket end is formed with a laterally protruding flange engageable with a shoulder along one side of the opposite blanket end upon insertion of the latter end into the shaft slot also.
  • the two inserted blanket ends are locked to each other and in the shaft slot and are partly wrapped around the shaft when the same is turned in the direction in which the flanged edge of the shaft slot constitutes the trailing edge of the slot. Due to such partial wrapping of the blanket ends about the shaft, the blanket can be conveniently stretched to any desired extent.
  • the invention also provides that the shaft is supported along its entire length or at least along the length of the slot therein by one or preferably several support bars which are fitted in the cylinder slot between the wall portions of the cylinder defining the slot and the peripheral wall of the shaft.
  • FIG. 1 is a cross-sectional view of a blanket cylinder provided with a clamping device according to the invention, the figure showing an initial step of the clamping of a blanket,
  • FIG. 2 is a cross-section similar to FIG. 1 but showing a more advanced stage of the clamping operation
  • FIG. 3 is a cross-sectional view similar to FIG. 2 and showing the completed clamping and stretching operation
  • FIG. 4 is a fragmentary longitudinal view of the blanket cylinder and its support.
  • a blanket cylinder 1 including a lengthwise slot 2 of preferably generally circular crosssection and joined to the peripheral wall of the cylinder by a constricted portion 2a.
  • the slot 2 may extend throughout the entire length of the cylinder but should have at least a length equal to the Width of the blanket 8 to be clamped to the cylinder.
  • a clamping shaft or spindle 3 is mounted within the slot 2 and extends along the length thereof.
  • the shaft is supported by means of trunnions 3a in wall 5 which may constitute part of the frame structure of the press and is rotatable by means of a worm drive diagrammatically indicated at 4.
  • Shaft 3 is provided with a lengthwise slot or groove 6 of preferably generally rectangular crosssection.
  • One of the side walls of the slot has at its upper rim an inwardly extending lengthwise flange or shoulder 7.
  • the blanket 8 has along its respective opposite edges reinforcing strips 9 and 10 respectively of generally U-shaped cross-section suitably secured thereto.
  • Strip 9 has along the edge of one of its branches :a shoulder or flange 11 outwardly facing in reference to the respective blanket end.
  • the blanket end mounting strip 10 is first inserted into slot 6, as it is shown in FIG. 1.
  • the second blanket end is then inserted into slot 6.
  • the straight branch of strip 9 now abuts against flange or shoulder 7 of shaft 3.
  • Flange or shoulder 11 on the other branch of strip 10 is close to overlying the respective branch of strip 10 but still clear of the same.
  • the crosswise width of slot 6 is such that the two blanket ends can be conveniently brought into the afore-described positions shown in the figure.
  • the U-shaped cross-sectional configuration of strips 9 and 10 has an inherent flexibility so that it is generally possible to insert and withdraw the reinforced blanket ends even if the crosswise width of slot 6 is not such as to permit a ready placement of the two strips in positions in which strip 9 is clear of strip 10.
  • support bars 12 are fitted in grooves in the walls of slot 2. These bars extend parallel to the axis of shaft 3 and are preferably made of a low wear material which also shows good friction properties to prevent accidental rotation of the shaft within slot 2. Bars made of bronze or hardened steel have been found to be suitable.
  • a clamping device for tautly mounting a blanket on a blanket cylinder of a printing press, said clamping device comprising, in combination, a blanket cylinder having in its peripheral wall a slot extending across the length of the cylinder, a clamping shaft having a single lengthwise extending peripheral slot of substantially rectangular cross-section, bearing means rotatably supporting said shaft in said slot of the blanket cylinder, the peripheral edge of one side wall of the shaft sl'ot terminating in an inwardly turned flange, and a blanket having along one of its ends on one side a shoulder positioned to underlie said flange of the shaft slot upon insertion of said blanket end into the shaft slot whereby said blanket end is locked in said shaft slot, and on the other side an outwardly protruding flange and having at its end opposite to said one end a shoulder positioned to underlie said blanket flange upon insertion of said opposite blanket end between said one blanket end and the other side wall of the shaft slot and turning of said shaft into the rotational direction in which said flange
  • a clamping device wherein a reinforcement strip of generally U-shaped cross-section is secured to each of said ends of the blanket extending across the width thereof, one of said strips having said outwardly turned flange along one lengthwise edge of one of its branches to form said blanket flange, the rims of the other branches of said strips constituting said other shoulders.
  • a clamping device according to claim 2 wherein the crosswise width of said shaft slot is in excess of the combined cross-sectional width of said reinforcement strips and the blanket ends mounting the strips.
  • a clamping device comprising at least one support bar lengthwise fitted into said cylinder slot parallel to said shaft between the respective Wall portion of the cylinder and said shaft to support the latter along its length.

Landscapes

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

Description

Oct. 4, 1966 K. LANGER CLAMPING DEVICE FOR AN OFFSET PRINTING PRESS Filed Oct. 29, 1964 United States Patent 3,276,364 CLAMPING DEVICE FOR AN OFFSET PRINTING PRESS Karl Langer, Heusenstamm, near Offenbach (Main), Germany, assignor to Roland Offsetmaschinenfabrik Faber & Schleicher A.G., Offenbach (Main), Germany, a German firm Filed Oct. 29, 1964, Ser. No. 407,412 Claims priority, application Germany, Apr. 29, 1964, R 37,803 4 Claims. (Cl. 101415.1)
The invention relates to a device for tautly clamping a blanket upon the blanket cylinder of an offset printing press and, more particularly, to a blanket clamping device for use with a cylinder having a lengthwise peripheral slot in which a clamping shaft or spindle is rotatably mounted, the ends of the blanket being held within the slot by the shaft.
There are known devices of this kind which clamp the blanket between two opposite corners of a shaft of rectangular cross-section and the adjacent slot walls. Clamping devices of this kind are difficult to operate and the clamping operation is time-consuming. Furthermore, such clamping devices are not suitable for use with webfed rotary offset printing presses due to the narrow clamping slots of such presses.
It is a broad object of the invention to provide a novel and improved clamping device of the general kind above referred to with which a rapid, safe and convenient clamping and stretching of the blanket may be effected and which is suitable for most types of printing presses, including web-fed rotary offset printing presses.
A more specific object of the invention is :to provide a novel and improved clamping device of the general kind above referred to with which a blanket can be tautly clamped to the cylinder by simply inserting the two respective ends of the blanket into the device and turning the shaft thereof.
Another more specific object of the invention is to provide a novel and improved clamping device of the general kind above referred to which supports the shaft along its entire length, thereby preventing deformation of the shaft by its own weight or the pull of the taut blanket and also access of dust and abrasive particles to the bearings for the shaft in the cylinder slot.
The aforementioned objects, features and advantages and other objects, features and advantages which will be pointed out hereinafter are attained by rotatably mounting in the cylinder a clamping shaft or spindle having a lengthwise peripheral slot of preferably substantially rectangular cross-section. One of the edges of the shaft slot terminates in an inwardly turned flange which is engageable with a shoulder along one end of the blanket upon insertion of said end into the shaft slot. The other side of said blanket end is formed with a laterally protruding flange engageable with a shoulder along one side of the opposite blanket end upon insertion of the latter end into the shaft slot also. The two inserted blanket ends are locked to each other and in the shaft slot and are partly wrapped around the shaft when the same is turned in the direction in which the flanged edge of the shaft slot constitutes the trailing edge of the slot. Due to such partial wrapping of the blanket ends about the shaft, the blanket can be conveniently stretched to any desired extent.
To prevent deformation of the shaft and the access of dust 'or abrasive particles to the shaft bearings, the invention also provides that the shaft is supported along its entire length or at least along the length of the slot therein by one or preferably several support bars which are fitted in the cylinder slot between the wall portions of the cylinder defining the slot and the peripheral wall of the shaft.
In the accompanying drawing a preferred embodiment of the invention is shown by way of illustration and not by way of limitation.
In the drawing:
FIG. 1 is a cross-sectional view of a blanket cylinder provided with a clamping device according to the invention, the figure showing an initial step of the clamping of a blanket,
FIG. 2 is a cross-section similar to FIG. 1 but showing a more advanced stage of the clamping operation,
FIG. 3 is a cross-sectional view similar to FIG. 2 and showing the completed clamping and stretching operation, and
FIG. 4 is a fragmentary longitudinal view of the blanket cylinder and its support.
Referring now to the figures in detail, the figures show a blanket cylinder 1 including a lengthwise slot 2 of preferably generally circular crosssection and joined to the peripheral wall of the cylinder by a constricted portion 2a. The slot 2 may extend throughout the entire length of the cylinder but should have at least a length equal to the Width of the blanket 8 to be clamped to the cylinder.
A clamping shaft or spindle 3 is mounted within the slot 2 and extends along the length thereof. The shaft is supported by means of trunnions 3a in wall 5 which may constitute part of the frame structure of the press and is rotatable by means of a worm drive diagrammatically indicated at 4. Shaft 3 is provided with a lengthwise slot or groove 6 of preferably generally rectangular crosssection. One of the side walls of the slot has at its upper rim an inwardly extending lengthwise flange or shoulder 7.
The blanket 8 has along its respective opposite edges reinforcing strips 9 and 10 respectively of generally U-shaped cross-section suitably secured thereto. Strip 9 has along the edge of one of its branches :a shoulder or flange 11 outwardly facing in reference to the respective blanket end.
To clamp the blanket to cylinder 1 and, more specifically, with slot 6 of shaft 3, the blanket end mounting strip 10 is first inserted into slot 6, as it is shown in FIG. 1. The second blanket end is then inserted into slot 6. As can best be seen in FIG. 2, the straight branch of strip 9 now abuts against flange or shoulder 7 of shaft 3. Flange or shoulder 11 on the other branch of strip 10 is close to overlying the respective branch of strip 10 but still clear of the same. As FIG. 2 also shows, the crosswise width of slot 6 is such that the two blanket ends can be conveniently brought into the afore-described positions shown in the figure.
To lock the blanket ends in slot 6 and to tension the blanket, shaft 3 is turned in the direction in which flange 7 constitutes the trailing edge of the slot or, in other words, shaft 3 is turned in clockwise direction as shown in the figures. As a result the two inserted blanket ends are forced into the slightly slanted position shown in FIG. 3 in which flange 11 overlies the respective edge of the strip 10. Accordingly, the two blanket ends now interlock each other in the slot and are retained therein by flange 7. As is shown in FIG. 3, the blanket is partly wrapped around shaft 3 thereby tensioning the blanket on cylinder 1. Any desired tensioning of the blanket may be readily obtained by selecting the appropriate angular position of shaft 3 in reference to the constricted slot portion 2a.
To release the blanket, shaft 3 is returned into the position of FIG. 2 by turning the shaft in the opposite direction. The blanket ends can now be manipulated into the positions in which strip 10 is clear of flange 11 on strip 9. The blanket end mounting strip 10 can then a be withdrawn from slot 6 and thereafter the other blanket end can also be withdrawn.
The U-shaped cross-sectional configuration of strips 9 and 10 has an inherent flexibility so that it is generally possible to insert and withdraw the reinforced blanket ends even if the crosswise width of slot 6 is not such as to permit a ready placement of the two strips in positions in which strip 9 is clear of strip 10.
To prevent deformation of shaft 3 and the access of moisture or abrasive particles to the shaft bearings, support bars 12 are fitted in grooves in the walls of slot 2. These bars extend parallel to the axis of shaft 3 and are preferably made of a low wear material which also shows good friction properties to prevent accidental rotation of the shaft within slot 2. Bars made of bronze or hardened steel have been found to be suitable.
Tests have shown that a clamping device as disclosed constitutes a rugged construction requiring very little servicing.
While the invention has been described in detail with respect to a certain now preferred example and embodiment of the invention, it will be understood by those skilled in the art, after understanding the invention, that various changes and modifications may be made without departing from the spirit and scope of the invention, and it is intended therefore to cover all such changes and modifications in the appended claims.
What is claimed as new and desired to be secured by Letters Patent is:
1. A clamping device for tautly mounting a blanket on a blanket cylinder of a printing press, said clamping device comprising, in combination, a blanket cylinder having in its peripheral wall a slot extending across the length of the cylinder, a clamping shaft having a single lengthwise extending peripheral slot of substantially rectangular cross-section, bearing means rotatably supporting said shaft in said slot of the blanket cylinder, the peripheral edge of one side wall of the shaft sl'ot terminating in an inwardly turned flange, and a blanket having along one of its ends on one side a shoulder positioned to underlie said flange of the shaft slot upon insertion of said blanket end into the shaft slot whereby said blanket end is locked in said shaft slot, and on the other side an outwardly protruding flange and having at its end opposite to said one end a shoulder positioned to underlie said blanket flange upon insertion of said opposite blanket end between said one blanket end and the other side wall of the shaft slot and turning of said shaft into the rotational direction in which said flanged side wall of the shaft slot is the trailing side wall of said slot whereby said opposite blanket end is also locked in the shaft slot and the blanket is partly wrapped about the shaft thus itensioning the blanket.
2. A clamping device according to claim 1 wherein a reinforcement strip of generally U-shaped cross-section is secured to each of said ends of the blanket extending across the width thereof, one of said strips having said outwardly turned flange along one lengthwise edge of one of its branches to form said blanket flange, the rims of the other branches of said strips constituting said other shoulders.
3. A clamping device according to claim 2 wherein the crosswise width of said shaft slot is in excess of the combined cross-sectional width of said reinforcement strips and the blanket ends mounting the strips.
4. A clamping device according to claim 1 and comprising at least one support bar lengthwise fitted into said cylinder slot parallel to said shaft between the respective Wall portion of the cylinder and said shaft to support the latter along its length.
References Cited by the Examiner UNITED STATES PATENTS 1,853,208 4/1932 Harrold 101-415.1 2,946,282 7/ 1960 Harless l()1415.1 2,973,710 3/1961 Hantscho 101415.l
FOREIGN PATENTS 756,867 9/ 1956 Great Britain.
ROBERT E. PULFREY, Primary Examiner.
I. R. FISHER, Assistant Examiner.

Claims (1)

1. A CLAMPING DEVICE FOR TAUTLY MOUNTING A BLANKET ON A BLANKET CYLINDER OF A PRINTING PRESS, SAID CLAMPING DEVICE COMPRISING, IN COMBINATION, A BLANKET CYLINDER HAVING IN ITS PERIPHERAL WALL A SLOT EXTENDING ACROSS THE LENGTH OF THE CYLINDER, A CLAMPING SHAFT HAVING A SINGLE LENGTHWISE EXTENDING PERIPHERAL SLOT OF SUBSTANTIALLY RECTANGULAR CROSS-SECTION, BEARING MEANS ROTATABLY SUPPORTING SAID SHAFT IN SAID SLOT OF THE BLANKET CYLINDER, THE PERIPHERAL EDGE OF ONE SIDE WALL OF THE SHAFT SLOT TERMINATING IN AN INWRDLY TURNED FLANGE, AN A BLANKET HAVING ALONG ONE OF ITS ENDS OF ONE SIDE A SHOULDER POSITIONED TO UNDERLIE SAID FLANGE OF THE SHAFT SLOT UPON INSERTION OF SAID BLANKET END INTO THE SHAFT SLOT WHEREBY SAID
US407412A 1964-04-29 1964-10-29 Clamping device for an offset printing press Expired - Lifetime US3276364A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DER37803A DE1198376B (en) 1964-04-29 1964-04-29 Arrangement for fastening the rubber blanket on the rubber cylinder of offset printing machines

Publications (1)

Publication Number Publication Date
US3276364A true US3276364A (en) 1966-10-04

Family

ID=7405320

Family Applications (1)

Application Number Title Priority Date Filing Date
US407412A Expired - Lifetime US3276364A (en) 1964-04-29 1964-10-29 Clamping device for an offset printing press

Country Status (4)

Country Link
US (1) US3276364A (en)
CH (1) CH411935A (en)
DE (1) DE1198376B (en)
GB (1) GB1083146A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3584580A (en) * 1969-08-25 1971-06-15 Leipzig Veb Druckmasch Werke Rubber sheet tensioning device for offset printing machines
US3757690A (en) * 1971-08-11 1973-09-11 Polygraph Leipzig Printing plate clamping device
US4217825A (en) * 1978-06-30 1980-08-19 M.A.N.-Roland Druckmaschinen Aktiengesellschaft Assembly for clamping and tightening a blanket over a blanket cylinder in a printing press
EP0142647A2 (en) * 1983-11-14 1985-05-29 Rockwell International Corporation Interfacing cam and toggle lockup
US4587901A (en) * 1983-07-29 1986-05-13 Officine Meccaniche G. Cerutti S.P.A. Plate holding roller particularly for flexographic printing applications
US5255056A (en) * 1990-04-20 1993-10-19 Minnesota Mining And Manufacturing Co. Photoconductor film clamping and tensioning system and method of use
US5791244A (en) * 1996-01-22 1998-08-11 Heidelberger Druckmaschinen Ag Device for applying a printing blanket to a blanket cylinder of a rotary printing press
US6601508B1 (en) * 1999-03-26 2003-08-05 Heidelberger Druckmaschinen Ag Device for clamping printing forms in clamping channels of reduced size
US20080217798A1 (en) * 2007-03-09 2008-09-11 Industrial Technology Research Institute Mold structure and the manufacturing method thereof
CN110103572A (en) * 2019-05-26 2019-08-09 昆山瑞源智能装备有限公司 A kind of individual iron sheet print paint roller blanket spool structure

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3128105C2 (en) * 1981-07-16 1985-11-14 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Device for holding the lower elevator of a two-layer elevator on the outer surface of a printing cylinder in printing machines
DE3219741C1 (en) * 1982-05-26 1987-11-12 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Blanket tensioner
DE102007006042B3 (en) * 2007-02-07 2008-09-18 Koenig & Bauer Aktiengesellschaft Blanket i.e. textile printing blanket, clamping method for printing machine, involves clamping ends of blanket by clamping spindle, and holding end section in prestressed-position after being released by clamping spindle within hollow space
CN114030289B (en) * 2021-11-05 2023-04-18 江苏富台机械科技有限公司 Multi-purpose plate hanging mechanism of water-based printing machine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1853208A (en) * 1930-07-26 1932-04-12 Harris Seybold Potter Co Plate-clamp
GB756867A (en) * 1953-09-02 1956-09-12 Crabtree & Sons Ltd R A new or improved means for securing blankets to the impression cylinders of printing machines
US2946282A (en) * 1954-04-20 1960-07-26 Hoe & Co R Printing machine plate lock-up
US2973710A (en) * 1958-03-14 1961-03-07 Hantscho George Printing press rollers

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE641173C (en) * 1933-11-11 1937-01-23 Koenig & Bauer Schnellpressfab Clamping device for flexible printing plates on the forme cylinder of rotary printing machines

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1853208A (en) * 1930-07-26 1932-04-12 Harris Seybold Potter Co Plate-clamp
GB756867A (en) * 1953-09-02 1956-09-12 Crabtree & Sons Ltd R A new or improved means for securing blankets to the impression cylinders of printing machines
US2946282A (en) * 1954-04-20 1960-07-26 Hoe & Co R Printing machine plate lock-up
US2973710A (en) * 1958-03-14 1961-03-07 Hantscho George Printing press rollers

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3584580A (en) * 1969-08-25 1971-06-15 Leipzig Veb Druckmasch Werke Rubber sheet tensioning device for offset printing machines
US3757690A (en) * 1971-08-11 1973-09-11 Polygraph Leipzig Printing plate clamping device
US4217825A (en) * 1978-06-30 1980-08-19 M.A.N.-Roland Druckmaschinen Aktiengesellschaft Assembly for clamping and tightening a blanket over a blanket cylinder in a printing press
US4587901A (en) * 1983-07-29 1986-05-13 Officine Meccaniche G. Cerutti S.P.A. Plate holding roller particularly for flexographic printing applications
EP0142647A2 (en) * 1983-11-14 1985-05-29 Rockwell International Corporation Interfacing cam and toggle lockup
EP0142647A3 (en) * 1983-11-14 1986-02-19 Rockwell International Corporation Interfacing cam and toggle lockup
US5255056A (en) * 1990-04-20 1993-10-19 Minnesota Mining And Manufacturing Co. Photoconductor film clamping and tensioning system and method of use
US5791244A (en) * 1996-01-22 1998-08-11 Heidelberger Druckmaschinen Ag Device for applying a printing blanket to a blanket cylinder of a rotary printing press
US6601508B1 (en) * 1999-03-26 2003-08-05 Heidelberger Druckmaschinen Ag Device for clamping printing forms in clamping channels of reduced size
US20080217798A1 (en) * 2007-03-09 2008-09-11 Industrial Technology Research Institute Mold structure and the manufacturing method thereof
CN110103572A (en) * 2019-05-26 2019-08-09 昆山瑞源智能装备有限公司 A kind of individual iron sheet print paint roller blanket spool structure

Also Published As

Publication number Publication date
CH411935A (en) 1966-04-30
GB1083146A (en) 1967-09-13
DE1198376B (en) 1965-08-12

Similar Documents

Publication Publication Date Title
US3276364A (en) Clamping device for an offset printing press
US3296673A (en) Printing blanket edging and anchoring means
JPH0430910B2 (en)
US3276365A (en) Printing plate clamping device for a printing press
US3217644A (en) Clamping means for mounting carrier sheets on flat or round surfaces
JPS6341146A (en) Stretcher combining fixation for block palte
US3913480A (en) Device for locking up flexible printing plates on forme cylinders of printing presses
US3095811A (en) Tension lockup for thin printing plates
US4344360A (en) Ink duct for offset or letterpress printing machines
JP2651720B2 (en) Spot printing method and blanket cylinder for spot printing in a rotary printing press
US4620482A (en) Rotary printing machine cylinder blanket construction and insertion tool
GB2092956A (en) Plate cylinders for sheet-fed rotogravure printing presses
US3218970A (en) Printing cylinder backing plate having printing plate tightening hooks
US2033205A (en) Printing cylinder
US3757690A (en) Printing plate clamping device
US3584580A (en) Rubber sheet tensioning device for offset printing machines
GB2167011A (en) Rubber blanket cylinder for a rotary printing press
US2714852A (en) Device for securing and tensioning a flexible transfer blanket on a cylinder
US3750572A (en) Printing plate cylinder saddle
JPH0790635B2 (en) Device for holding the lower layer of a two-layer cylinder covering for a printing cylinder of a rotary printing press
US5218906A (en) Cylinder blanket fastening assembly
JP2898579B2 (en) Device for fixing a flexible plate with bent edges to the cylinder of a rotary printing press with a slit-shaped introduction
JP2777090B2 (en) Flexible plate with beveled ends for fixing to the cylinder of a rotary printing press
US3125023A (en) Blanket tensioning means for the impression
JPH0256215B2 (en)