US3896727A - Saddle lock-up for tab-less flexible printing plates - Google Patents

Saddle lock-up for tab-less flexible printing plates Download PDF

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Publication number
US3896727A
US3896727A US446454A US44645474A US3896727A US 3896727 A US3896727 A US 3896727A US 446454 A US446454 A US 446454A US 44645474 A US44645474 A US 44645474A US 3896727 A US3896727 A US 3896727A
Authority
US
United States
Prior art keywords
sleeves
printing plate
flexible printing
channel member
saddle
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
US446454A
Other languages
English (en)
Inventor
Jr Charles Bernard Ruckdeschel
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.)
Hercules LLC
Original Assignee
Hercules LLC
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 Hercules LLC filed Critical Hercules LLC
Priority to US446454A priority Critical patent/US3896727A/en
Priority to FR7503230A priority patent/FR2261877B1/fr
Priority to BE153166A priority patent/BE825304A/xx
Priority to DE2505235A priority patent/DE2505235C2/de
Priority to CA220,627A priority patent/CA1023995A/en
Priority to NLAANVRAGE7502193,A priority patent/NL177293C/xx
Priority to CH239475A priority patent/CH591334A5/xx
Application granted granted Critical
Publication of US3896727A publication Critical patent/US3896727A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B41F27/14—Devices for attaching printing elements or formes to supports for attaching printing formes to intermediate supports, e.g. adapter members
    • 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
    • B41F27/1225—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 substantially rectilinearly
    • B41F27/1231—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 substantially rectilinearly by translatory motion substantially tangential to support surface

Definitions

  • the invention is a saddle lock-up for flexible printing plates utilizing a plurality of radially and axially moveable sleeves contained within an inverted wedgeshaped opening.
  • Photopolymer printing plates are generally made by bonding the photopolymer resin to some form of substrate. It is most desirable. to positively grip the substrate directly to avoid the problem of photopolymer-substrate separation during press operation. To accomplish this, several manufactures have bonded the photopolymer resin directly to a thin metal backing in order that more conventional clamping of the stronger metal backing could be employed.
  • the instant invention provides positive gripping means within the narrow confines of saddle thickness. that willpositively grip a flexible substrate.
  • the patent does not show the instant invention which utilizes a plurality of jradially and axially moveable sleeves within a wedge-shaped opening, said sleeves individually conforming to the flexible plateyet OBJECTS OF THE INVENTION It is the primary object of the instant invention to provide a saddle lock-up 'for flexible printing plates capable of positively locking the flexible printing plate substrate.
  • Another object of the instant invention is to provide a saddle lock-up that may be manipulated completely by hand without the use of any tools.
  • Still another object of the instant invention is to provide a saddle lock-up that will allow lateral movement of the plate for purposes of color registration.
  • FIG. 1 is a partial perspective view of the trailing edge of the printing saddle of the instant invention.
  • FIG. 2 is a partial section view taken along the section lines 22 in FIG. 1.
  • FIG. 3 is a partial section view taken along section lines 33 in FIG. 1.
  • FIG. 4 is a partial perspective view of the leading edge 15 of the saddle of the instant invention.
  • FIG. 5 is a partial section view taken along section lines 5-5 in FIG. 4.
  • FIG. 6 is 'a partial section view similar to FIG. 2 of an alternate embodiment of the instant invention.
  • a plurality of sleeve members 16 are contained within wedge-shaped opening 14.
  • a rod 18 is concentrically mounted within sleeves 16, said rod 18 having a diameter less than the inside diameter of said sleeves 16 to allow radial movement of the sleeves 16.
  • the loose'fitting rod 18 provides means to simultaneously depress the sleeves deeper into opening 14.
  • Sleeves 16 are also axially spaced from each other to allow a lateral movement within wedge-shaped opening 14.
  • Sleeves 16 are biased toward the narrow end of wedgeshaped opening 14 by resilient means 20.
  • Resilient means 20 is shown to be a folded mylar strip that runs the length of the assembled sleeves.
  • the surfaces of sleeves l6 and the inside edge of channel member 12 are provided with locking faces coated, formed, machined or treated to provide friction surfaces to further aid in printing plate locking.
  • Rod 18 and sleeves 16 are contained within the opening 14 by an end stop 24 shown typically as a nut and bolt arrangement. It is within the scope of the invention to use other types of stops such as machined blocks.
  • Channel 12 is reinforced on the saddle body side by a flange 26 and saddle body 10 has been slotted to accommodate flange 26. It can be seen that channel 12 is moveable with respect to saddle body 10 to tension flexible printing plate 22 when positively gripped as discussed above.
  • Channel 12 is resiliently biased by means 28 as shown in FIG. 2.
  • Flange 26 is contained within saddle body 10 by a set screw 30, or the like, as shown in FIG.
  • a spring steel clip 32 is attached to saddle body in a cantilever fashion at one end thereof, said clip having an upturned portion 34 at the other end thereof positioned within slot 36 to hook the front side of channel 12 when channel 12 is pushed toward saddle body 10.
  • a finger slot 38 has been provided in channel 12, as can be seen in FIG. 2, for depressing one of the sleeves 16.
  • a similar finger slot has provided at the other end of channel (not shown). It can be seen in FIG. 2 that when a sleeve 16 in front of finger slot 38 is depressed the inside surface of sleeves 16 will contact rod 18 which will in turn engage the inside of other sleeves 16 to force all sleeves 16 deeper within opening 14 and allow disengagement or engagement of a flexible printing plate 22.
  • channel 12 can be pushed toward saddle body 10 to be retained by clip 32 and that sleeves 16 may be depressed by hand through finger slot 38 for insertion of flexible printing plate 22.
  • Resilient strip 20 will urge sleeves 16 upward into the wedge-shaped opening 14 to positively trap flexible printing plate 22.
  • Clips 32 may then be released and channel 12 will be biased away by resilient means 26 from saddle body 10 causing sleeves 16 to firmly seat in opening 14 and allowing channel 12 to tension flexible printing plate 22.
  • the leading edge of the saddle as shown in FIG. 4 incorporates an essentially identical lock-up mechanism with the exception that saddle body 10 and a L-shaped plate 40 cooperate to form the wedge-shaped opening 42.
  • L-shaped member 40 is rigidly attached to the underside of saddle body 10 by means 44.
  • FIG. 6 An alternate embodiment of the instant invention is shown in FIG. 6, wherein a channel member 46 having one vertical and one inclined side is utilized rather than two inclined sides. It can be seen that a channel 46 is provided which is less costly to machine but yet still provides positive plate gripping action by the interaction of plurality of independent loose-fitting sleeves l6 and a wedge-shaped opening.
  • a saddle lock-up for flexible printing plates comprising:
  • a semi-cylindrical saddle body having a leading edge and a trailing edge
  • leading edge clamping means connected to the leading edge of said saddle to positively grip one end of a flexible printing plate; a transverse channel member moveably connected to the trailing edge of said saddle body to move toward and away from said saddle body. said channel member having an upwardly facing inverted wedge-shaped opening therein;
  • said means mounted within said channel to positively grip a flexible printing plate and to allow lateral adjustment of a printing plate, said means comprising a plurality of transversely spaced sleeves within said channel member, said sleeves radially and axially independently mounted with respect to each other.
  • said sleeves conforming to the thickness of a flexible printing plate independent of each other and allowing lateral movement of the flexible printing plate for purposes of color registration.
  • a saddle lock-up for flexible printing plates comprising:
  • a semi-cylindrical saddle body having a leading edge ,and a trailing edge
  • leading edge clamping means connected to the lead- 7 ing edge of said saddle to positively grip one end of a flexible printing plate
  • transverse channel member moveably connected to the trailing edge of said saddle body to move toward and away from said saddle body, said channel member having an upwardly facing inverted wedge-shaped opening therein;
  • resilient means biasing said channel member away from said trailing edge
  • said means comprising a plurality of transversely spaced sleeves within said channel member, said sleeves radially and axially independently mounted with respect to each other and defining a gap between said sleeves and one side of the inside of said channel member to positively grip the other end of the flexible printing plate in said gap, said sleeves conforming to the thickness of a flexible printing plate independent of each other and allowing lateral movement of the flexible printing plate for purposes of color registration; and I means connected to said sleeves to simultaneously less than the inside diameter of said sleeves to allow independent radial movement of said sleeves, said rod contacting the inside of said sleeves when one of said sleeves is depressed within said channel member to simultaneously depress all of the sleeves deeper into the opening.

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Printing Plates And Materials Therefor (AREA)
US446454A 1974-02-27 1974-02-27 Saddle lock-up for tab-less flexible printing plates Expired - Lifetime US3896727A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US446454A US3896727A (en) 1974-02-27 1974-02-27 Saddle lock-up for tab-less flexible printing plates
FR7503230A FR2261877B1 (US07655688-20100202-C00086.png) 1974-02-27 1975-02-03
BE153166A BE825304A (fr) 1974-02-27 1975-02-07 Dispositif de blocage de chemise-support pour plaques d'impression flexibles sans pattes
DE2505235A DE2505235C2 (de) 1974-02-27 1975-02-07 Sattelplatte zur Befestigung von Druckplatten an Rotations-Hochdruckmaschinen
CA220,627A CA1023995A (en) 1974-02-27 1975-02-24 Saddle lock-up for tab-less flexible printing plates
NLAANVRAGE7502193,A NL177293C (nl) 1974-02-27 1975-02-25 Zadelplaat voor het bevestigen van een flexibele drukplaat.
CH239475A CH591334A5 (US07655688-20100202-C00086.png) 1974-02-27 1975-02-26

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US446454A US3896727A (en) 1974-02-27 1974-02-27 Saddle lock-up for tab-less flexible printing plates

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US05/709,053 Reissue USRE30631E (en) 1976-07-27 1976-07-27 Saddle lock-up for tab-less flexible printing plates

Publications (1)

Publication Number Publication Date
US3896727A true US3896727A (en) 1975-07-29

Family

ID=23772641

Family Applications (1)

Application Number Title Priority Date Filing Date
US446454A Expired - Lifetime US3896727A (en) 1974-02-27 1974-02-27 Saddle lock-up for tab-less flexible printing plates

Country Status (7)

Country Link
US (1) US3896727A (US07655688-20100202-C00086.png)
BE (1) BE825304A (US07655688-20100202-C00086.png)
CA (1) CA1023995A (US07655688-20100202-C00086.png)
CH (1) CH591334A5 (US07655688-20100202-C00086.png)
DE (1) DE2505235C2 (US07655688-20100202-C00086.png)
FR (1) FR2261877B1 (US07655688-20100202-C00086.png)
NL (1) NL177293C (US07655688-20100202-C00086.png)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4061087A (en) * 1976-12-17 1977-12-06 Newspaper Equipment Company Plate locking structure for press cylinders
US4090444A (en) * 1977-03-16 1978-05-23 Dayco Corporation Printing blanket holding bar
US4133264A (en) * 1975-12-01 1979-01-09 K & F Manufacturing Co., Inc. Clamping assembly for thin printing plates
US4277164A (en) * 1978-07-14 1981-07-07 Olympia Werke Ag Photocopier photoconductive sheet holding device
WO1988004991A1 (en) * 1987-01-09 1988-07-14 Innovative Graphic Industries, Inc. Adapting offset duplicator for printing, scoring, perforating
US5010818A (en) * 1988-02-29 1991-04-30 Rockwell International Corporation Tensionless plate lock-up
US5131326A (en) * 1991-08-19 1992-07-21 Rockwell International Corporation Cover mounting for a printing press
US5402722A (en) * 1992-12-24 1995-04-04 Koenig & Bauer Aktiengesellschaft Cylinder spindle tensioning assembly
US5475898A (en) * 1991-05-25 1995-12-19 Holdsworth James & Brothers Method of fixing card clothing to carrier cylinder
US5562036A (en) * 1994-07-14 1996-10-08 Koenig & Bauer Aktiengesellschaft Device for securing packings in printing cylinders
CN109625987A (zh) * 2018-12-12 2019-04-16 合肥动联自动化科技有限公司 一种码垛设备定位机构

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5355792A (en) * 1992-05-21 1994-10-18 Wearguard Corporation Two-part frame and pre-tensioning device therefor

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US453862A (en) * 1891-06-09 Plate-ho
US1260470A (en) * 1914-05-07 1918-03-26 Harris Automatic Press Co Plate-holder for printing-presses.
US2688827A (en) * 1953-08-24 1954-09-14 Hiram J Hobday Clamping device for emery cloth and sandpaper
US2730948A (en) * 1952-01-22 1956-01-17 Addressograph Multigraph Clamp for master sheets of printing machines
US3416447A (en) * 1966-10-10 1968-12-17 Brooks & Perkins Saddle for use with flexible wraparound printing plates
US3696744A (en) * 1970-10-13 1972-10-10 North American Rockwell Saddle lockup for flexible printing plate
US3791295A (en) * 1972-09-11 1974-02-12 W Albright Self-tensioning printing plate saddle

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE6909325U (de) * 1969-03-05 1969-07-31 Koenig & Bauer Schnellpressfab Abnehmbarer klischeetraeger fuer formzylinder von hochdruckmaschinen

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US453862A (en) * 1891-06-09 Plate-ho
US1260470A (en) * 1914-05-07 1918-03-26 Harris Automatic Press Co Plate-holder for printing-presses.
US2730948A (en) * 1952-01-22 1956-01-17 Addressograph Multigraph Clamp for master sheets of printing machines
US2688827A (en) * 1953-08-24 1954-09-14 Hiram J Hobday Clamping device for emery cloth and sandpaper
US3416447A (en) * 1966-10-10 1968-12-17 Brooks & Perkins Saddle for use with flexible wraparound printing plates
US3696744A (en) * 1970-10-13 1972-10-10 North American Rockwell Saddle lockup for flexible printing plate
US3791295A (en) * 1972-09-11 1974-02-12 W Albright Self-tensioning printing plate saddle

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4133264A (en) * 1975-12-01 1979-01-09 K & F Manufacturing Co., Inc. Clamping assembly for thin printing plates
US4061087A (en) * 1976-12-17 1977-12-06 Newspaper Equipment Company Plate locking structure for press cylinders
US4090444A (en) * 1977-03-16 1978-05-23 Dayco Corporation Printing blanket holding bar
US4277164A (en) * 1978-07-14 1981-07-07 Olympia Werke Ag Photocopier photoconductive sheet holding device
WO1988004991A1 (en) * 1987-01-09 1988-07-14 Innovative Graphic Industries, Inc. Adapting offset duplicator for printing, scoring, perforating
US5010818A (en) * 1988-02-29 1991-04-30 Rockwell International Corporation Tensionless plate lock-up
US5475898A (en) * 1991-05-25 1995-12-19 Holdsworth James & Brothers Method of fixing card clothing to carrier cylinder
US5131326A (en) * 1991-08-19 1992-07-21 Rockwell International Corporation Cover mounting for a printing press
US5402722A (en) * 1992-12-24 1995-04-04 Koenig & Bauer Aktiengesellschaft Cylinder spindle tensioning assembly
US5562036A (en) * 1994-07-14 1996-10-08 Koenig & Bauer Aktiengesellschaft Device for securing packings in printing cylinders
CN109625987A (zh) * 2018-12-12 2019-04-16 合肥动联自动化科技有限公司 一种码垛设备定位机构

Also Published As

Publication number Publication date
DE2505235A1 (de) 1975-08-28
FR2261877B1 (US07655688-20100202-C00086.png) 1982-09-17
NL7502193A (nl) 1975-08-29
DE2505235C2 (de) 1981-09-17
NL177293B (nl) 1985-04-01
NL177293C (nl) 1985-09-02
CA1023995A (en) 1978-01-10
BE825304A (fr) 1975-05-29
CH591334A5 (US07655688-20100202-C00086.png) 1977-09-15
FR2261877A1 (US07655688-20100202-C00086.png) 1975-09-19

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