EP0595760B1 - Vorrichtung zum Spannen von Druckplatten an Offsetdruckmaschinen - Google Patents

Vorrichtung zum Spannen von Druckplatten an Offsetdruckmaschinen Download PDF

Info

Publication number
EP0595760B1
EP0595760B1 EP19930810355 EP93810355A EP0595760B1 EP 0595760 B1 EP0595760 B1 EP 0595760B1 EP 19930810355 EP19930810355 EP 19930810355 EP 93810355 A EP93810355 A EP 93810355A EP 0595760 B1 EP0595760 B1 EP 0595760B1
Authority
EP
European Patent Office
Prior art keywords
plate
cylinder
clamping
clamp
roller
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
EP19930810355
Other languages
English (en)
French (fr)
Other versions
EP0595760A1 (de
Inventor
Mineyuki Itoh
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.)
Sakurai Graphic Systems Corp
Original Assignee
Sakurai Graphic Systems Corp
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 Sakurai Graphic Systems Corp filed Critical Sakurai Graphic Systems Corp
Publication of EP0595760A1 publication Critical patent/EP0595760A1/de
Application granted granted Critical
Publication of EP0595760B1 publication Critical patent/EP0595760B1/de
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
    • B41F27/1225—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
    • 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
    • B41F27/1206—Feeding to or removing from the forme cylinder

Definitions

  • the present invention relates to a plate clamping device as per defined in the preamble of claim 1, for use in an offset press. More particularly, the present invention pertains to a mechanism which is able to adequately adjust a torsion of a printing plate with respect to a plate cylinder.
  • a clamping device according to the preamble of the independent claim 1 is disclosed in US-3.156.184.
  • the clamping device described there does not allow for adjustment or compensation of torsion of a printing plate relative to a plate cylinder.
  • Fig. 22 shows a general mechanical composition of an offset press machine.
  • the offset press includes a group of rollers, a plate cylinder 200, a blanket cylinder 210, and an impression cylinder 211.
  • Ink and water are fed from a group of inking rollers 212 and moistening rollers 213, respectively.
  • the ink and the water are mixed.
  • the mixture of the ink and water is applied to a printing plate 204 mounted on the plate cylinder 200.
  • the inked image is transferred to a blanket 214 mounted on the blanket cylinder 210 from the plate 204.
  • the wet image over the blanket 214 is printed onto printing sheets Pa carried on the impression cylinder 211.
  • the correct settings of the printing plate 204 on the plate cylinder 200 is a decisive factor of printing quality.
  • a groove 201 extending, perpendicularly to the drawing sheet is formed on the outer peripheral surface of the cylinder 200.
  • a first and a second plate clamps 202, 203 are disposed in the groove 201 to clamp the top and bottom ends of the plate 204, respectively.
  • the clamps 202, 203 are forcively moved in the radial direction in respect to the cylinder 200 for the opening motion.
  • the holding portions of the clamps 202, 203 are moved in the peripheral direction of the plate cylinder 200 for the opening motion.
  • the plate 204 is made of an aluminum thin plate the both ends of which are folded back. The folded ends of the plate 204 are adequately placed in the holding portions to be securely clamped by the clamps 202, 203.
  • the plate 204 is held on the outer periphery of the cylinder 200.
  • the first clamp 202 is fixed to the cylinder 200.
  • a pair of torsion adjusting screws 208, 209 is disposed in the distal end of the second clamps 205, 206, so as to be advanced or retreated.
  • the distal end of each torsion adjusting screws 208, 209 is in contact with the inner wall of the groove 201, respectively.
  • the plate 204 mounted on the cylinder 200 is under the torsion as shown in the chain line in Fig. 21. This torsion can be eliminated by retreating the screw 208 and advancing the screw 209 to move the second clamps 205, 206 for expanding the end of the plate 204.
  • a plate clamping according to this invention is characterized by the features of the characterizing part of claim 1.
  • the screw is advanced or retreated to adjust the torsion.
  • the plate clamping mechanism is moved in the axial direction of the plate cylinder while being forcively supported in a groove by biasing members.
  • the printing plate is moved together with the plate clamping mechanism. As a result, the torsion of the printing plate is adjusted.
  • FIG. 1 A preferred embodiment of a plate clamping device according to the present invention will now be described referring to Figs. 1 through 19.
  • Fig. 1 shows a three-color offset press 100.
  • the offset press 100 includes a first-color printing unit 101, a second-color printing unit 102 and a third-color printing unit 103.
  • a feeder 104 is disposed in the vicinity of the first-color printing unit 101 at the feeding side.
  • a delivery unit 105 is disposed near the third-color printing unit 103 at the delivery side.
  • ink is fed to a plate cylinder 1 via inking rollers 110.
  • water is supplied to the plate cylinder 1 via moistening rollers 111.
  • On the cylinder 1 is mounted a printing plate 3 (Figs. 6 and 9) on which the ink and the water are mixed with each other.
  • the ink left on the plate 3 in the form of images is transferred to a blanket mounted on a blanket roller 114.
  • Printing sheets Pa are fed from the feeder 104 to the first-color printing unit 101 via a delivery cylinder 112.
  • the printing sheet Pa held on the outer periphery of an impression cylinder 113 comes to contact with the outer periphery of the blanket cylinder 114.
  • the inked images in the first color transferred to the blanket are printed on the sheet Pa.
  • Printing is made all over the printing sheet Pa when the blanket cylinder 114 is rotated by the rotation of the impression cylinder 113.
  • the printing sheet Pa is fed to an impression cylinder 113 of the second-color printing unit 102 via a delivery cylinder 115.
  • the sheet Pa held on the cylinder 113 comes to contact with the outer periphery of a blanket cylinder 114. Then, the inked images of the blanket are transferred to the sheet Pa in the same way as carried out in the first unit 101.
  • the sheet Pa is fed to the third-color printing unit 103.
  • the printed sheet Pa is fed to the delivery unit 105, and the printing procedure is completed.
  • the plate cylinder 1 is rotatably supported between side walls 4a, 4b of the first-color printing unit 101.
  • the cylinder 1 is designed to carry the printing plate 3 (Fig. 9) on its outer peripheral surface.
  • the plate 3 is made of a thin and flat aluminum.
  • a plate holding mechanism F is provided between the side walls 4a, 4b to hold the plate on the plate cylinder 1.
  • a groove 2 extends in the longitudinal direction of the plate cylinder, i.e., in the axial direction of the plate cylinder 1.
  • a first plate clamp A and a second plate clamp B are disposed in the groove 2.
  • the clamps A, B extend in the longitudinal direction of the groove 2 so as to face each other.
  • the first plate clamp A seizes the top end of the plate 3, while the second plate clamp B seizes the bottom end of the plate 3.
  • the plate clamps A, B are spaced in the peripheral direction of the cylinder 1.
  • the clamping portions of the first and second plate clamps A, B are moved in the radial direction of the cylinder 1 for the opening or closing motions.
  • the second plate clamp B has at its each end an adjusting mechanism C for adjusting the torsion of the plate 3 with respect to the cylinder 1.
  • a clamp activating mechanism D is disposed at the right end of the cylinder 1. The mechanism activates the first and second plate clamps A , B to seize the plate 3.
  • a clamp moving mechanism E is disposed at the left end of the plate cylinder 1 to bring the second clamp B towards the first clamp A or away therefrom.
  • the first clamp A is hereinafter described.
  • a longitudinally extending clamping block 10 is disposed in the groove 2.
  • a bearing 19 is fixed to the central portion of the clamping block 10.
  • the clamping block 10 is rotatably attached to the cylinder 1 by a bolt 9. The bolt 9 is inserted through the clamping block 10 and the bearing 19, and screwed into the inner bottom of the groove 2.
  • a pair of movable clamping plates 12 are disposed on the clamping block 10.
  • the movable clamping plates 12 are attached to the respective clamping blocks 10 by means of a plurality of bolts 13 with an allowance for the upward or downward movement of the movable plate 12.
  • the bolts 13 are screwed into the clamping blocks 10.
  • a washer 14 is disposed between each movable clamping plate 12 and bolt 13.
  • Each clamping block 10 has a cam way 10a at the top of its inner end.
  • the cam way 10a extends longitudinally with respect to the block 10 .
  • Each clamping plate 12 has a step 12a at the bottom of its inner end.
  • the step 12a extends longitudinally with respect to the plate 12 so as to face the cam way 10a.
  • a cam shaft S1 set in the cam way 10a opposes the step 12a.
  • the cam shaft S1 extends along the first plate clamp A up to the vicinity of the side wall 2b of the groove.
  • a cam face Sa is formed on the cam shaft S1.
  • a plurality of spring housing holes 16 are provided with each clamping block 10.
  • the holes 16 are disposed on the opposite side of the cam way 10a with respect to the bolt 13 so as to face the clamping plates 12.
  • a compression coil spring 15 disposed in each hole 16 faces the clamping plate 12.
  • the step 12a is continuously pressed against the cam shaft S1 by the force of each spring 15.
  • each clamping plate 12 is held open and faces the clamping block 10. Therefore, as shown in Fig. 9, when the cam face Sa is in contact with the chipped portion 12a, the outer end of each clamping plate 12 is kept open by the spring 15. On the other hand, as shown in Fig. 10, when the cam face Sa is not in contact with the chipped portion 12a, the outer end of the clamping plate 12 is kept close by the spring 15.
  • a connecting shaft 18 rotatably supported by the side wall 2b is connected with the outer end of the cam shaft S1 by way of a cylindrical coupling 17.
  • the second clamp B will be described hereinafter.
  • a pair of clamping blocks 20 are spaced in the groove 2.
  • Each clamping block 20 can be moveable between two positions shown by solid line in Figs. 9 and 11, respectively.
  • a moveable clamping plate 21 is disposed on the top of each clamping block 20.
  • the plates 21 are attached to the blocks 20 by means of bolts 22.
  • the plate 21 are allowed to upward or downward movement.
  • the bolt 22 is inserted through the plate 21, and screwed into the block 20.
  • a washer 23 is placed between the plate 21 and the bolt 22.
  • Each clamping block has a cam way 20a extending longitudinally at the top of the inner end of each block 20.
  • a chipped portion 21a is formed at the bottom of the inner end of each plate 21.
  • the chipped portion 21a extends longitudinally with respect to the plate 21 and faces the corresponding cam way 20a.
  • a cam shaft S2 disposed in the cam way 20 faces the step 21a.
  • the cam shaft S1 longitudinally extends along the second clamp B up to the vicinity of the side wall 2b of the groove.
  • a cam face Sb is formed on the cam shaft S2.
  • each block has a plurality of spring housing holes 25 facing the plates 21 at the opposite side of the cam way 20a with respect to the bolt 22.
  • Each hole 25 accommodates a compression coil spring 24.
  • the step 21a is continuously pressed against the cam shaft S2 by the force of each spring 24.
  • the outer end of each clamping plate 21 is biassed in the opening direction with respect to the block 20. Therefore, as shown in Fig. 9, when the cam face Sb is in contact with the step 21a, the outer end of each clamping plate 21 is held open by the force of the spring 24. Furthermore, as shown in Fig. 11, when the cam face Sb is not in contact with the step 21a, the outer end of each plate 21 is kept in the closed position by the spring 24.
  • Each block 20 has an outer end protruding from the outer end of each clamping plate 21.
  • a chamfer 20c is formed with the end corner of each block 20 in order to guide the plate 3 smoothly.
  • a connecting shaft 27 is rotatably supported by the side wall 2b.
  • the shaft 27 is connected with the outer end of the cam shaft S2 by way of a coupling 26.
  • a pair of engaging grooves 26a, 26b are formed at the both ends of the coupling 26 to lie perpendicularly to each other.
  • An engaging projection 28 formed on the cam shaft S2 and an engaging projection 27a formed on the connecting shaft 27 engage with each other in the grooves 26a, 26b. More specifically, two projections 27a, 28 are engaged one with another so as to be slidable in the radial direction of the coupling 26.
  • the coupling 17 described above has the same structure as the coupling 26.
  • the connecting shaft 18 and the cam shaft S1 are connected to the coupling 17 so as to be able to slide in the radial direction of the coupling 17.
  • a plurality of spring housing holes 20b are provided with each blocks 20.
  • a plurality of coil springs 29 is held between holes 20b and the inner surface of the groove 2.
  • Each block 20 is biassed against the first clamp A by the force of each spring 29.
  • a hole 36 is formed on the right side of the block 20.
  • a plunger 37 with a coil spring 35.
  • the plunger 37 is arranged to slide in the axial direction of the cylinder 1.
  • a ball 37a rotatably supported at the outer end of the plunger 37 is in contact with the side wall 2b.
  • the right end of the plunger 37 is biassed to the side wall 2b by the force of the spring 35.
  • a female screw 38 is formed at the left end of the block 20.
  • An adjusting bolt 39 is screwed into the screw 38.
  • a ball 39a rotatably supported at the outer end of the adjusting bolt 39 is in contact with the wall 2c of groove 2.
  • a nut 39b is firmly mounted on the adjusting bolt 39.
  • the second plate clamp B can be moved in the axial direction of the plate cylinder 1 by adjusting the amount of the inserting length of the female screw 38 into the clamping block 20.
  • the clamp activating mechanism D will be hereinafter described.
  • the clamp activating mechanism D includes a first and a second clamp activating mechanic portions D1, D2.
  • the mechanic portion D1 is designed to activate the first plate clamp A, while the second mechanic portion D2 is designed to activate the second plate clamp B.
  • a plate clamping lever 40 is fixed to the shaft 18 connected to the cam shaft in Fig. 2.
  • a plate clamping roller 41 is rotatably supported by a shaft 41a at the end portion of the lever 40.
  • the cylinder 1 is rotated.
  • the roller 41 is moved to the position where the roller 41 can meet the end of the driving arm 42.
  • the arm 42 flexibly reciprocates in the axial direction of the cylinder 1 by means of an air cylinder (not illustrated) which is actuated by the manipulation of an operation switch.
  • a plate releasing lever 43 is pivotally supported by a pivot 43a on the side wall 2b.
  • An abutting portion 43b is integrally formed with the lever 43.
  • the abutting portion 43b extends to contact the pivoting locus of the roller 41.
  • a plate releasing roller 45 is rotatably supported by the shaft 45a.
  • the second clamp activating mechanism D2 is hereinafter described.
  • a lever 50 is fixed on the connecting shaft 27 connected to the cam shaft S2.
  • a plate clamping roller 51 and a plate releasing roller 52 are rotatably supported by shafts 51a and 52a, respectively.
  • the plate clamp moving mechanism E is hereinafter described.
  • a plurality of block-shaped bases 60 are fixed to the inner surface of the groove 2 between the first and second clamps A, B.
  • a guiding groove 60a extends in the peripheral direction of the cylinder 1.
  • a rack 62 fixed to inner surface of each block 20 is slidably disposed inside the guiding groove 60a.
  • a driving shaft S3 is rotatably disposed, by way of bearings, between the both side walls 2b, 2c of the groove 2 such that the shaft S3 extends in the axial direction of the cylinder 1.
  • pinions 61 are formed around the shaft S3 in the conformity to the racks 62 so that each pinion 61 is arranged to engage with each rack 62.
  • a spur gear 63 is fixed to the end of the shaft S3.
  • a first lever 64 is pivotally supported by the shaft 64a on the wall 2c in the vicinity of the spur gear 63.
  • a second lever 65 is pivotally supported by a shaft 65a on the wall 2c at the opposite side to the first lever 64 with respect to the shaft S3.
  • External gears 64b, 65b are formed on the outer periphery of the base of the first and second levers 64, 65. The gears 64b, 65b are engaged with the spur gear 63.
  • the tapered abutting portions 64c, 65c are integrally formed with the first and second levers 64, 65, respectively.
  • the cylinder 1 is turned. Then, the portion 64c is moved to the position where the portion 64c can meet the end of the arm 66.
  • the cylinder 1 is turned, and the portion 65c is moved to the position where the portion 65c meets the arm 66 and can contact the end thereof.
  • the arm 66 reciprocates in the radial direction of the cylinder 1 with aid of an air cylinder (not illustrated).
  • the block 20 returns from the solid line position to the chain line position shown in Fig. 11 according to the force of the spring 29. Then, the second clamp B can spread the plate 3 on the peripheral surface of the cylinder 1 without any slackness. Then, as shown in Fig. 13, the shaft S3 is turned clockwise. Resultingly, the first and second levers 64, 65 return to the solid line position shown in Fig. 12 before the plate 3 is clamped.
  • a plate holding mechanism F is hereinafter explained.
  • a U-type connection fitting 71 is connected to an end of a rod 70a of an air cylinder 70.
  • a proximal end of a link 72 is rotatably connected to the fitting 71 by a pin 73.
  • a distal end of the link 72 is fixed on the shaft 72.
  • the shaft 74 is rotatably supported on the side walls 4a, 4b.
  • a pair of links 75 are fixed on the shaft 74 between the side walls 4a, 4b.
  • a roller shaft 76 is rotatably supported by the distal ends of the connecting links 75.
  • a roller 79 is rotatably supported by the shaft 76 via bearings (not illustrated) such that the roller extends in the axial direction of the cylinder 1.
  • the roller 79 is located in the waiting position.
  • the roller 79 is located in the working position where the roller 79 forces the plate 3 against the cylinder 1.
  • a swinging lever 78 has an end fixed to the right end of the shaft 76.
  • a torsion coil spring 77 is loosely set on the shaft 76 between the link 75 and lever 78. The both ends of the spring 77 are hooked on the link 75 and lever 78, respectively.
  • a roller 80 is rotatably supported at the end of a shaft 81 connected to the lever 78.
  • a pair of driven levers 82 is fixed to the shaft 76 between the side walls 4a, 4b.
  • the levers 82 are arranged to swing together with the shaft 76 between the waiting position and the working position, shown in Figs. 18 and 19, respectively.
  • a supporting rod 83 is fixed to the end of the driven levers 82 by means of machine screws 84 such that the rod 83 extends between the levers 82 in the axial direction of the roller 79.
  • a pair of clamping plates 85 is fixed on an end of the rod 83 such that the plates 85 extend in the axial direction of the roller 79.
  • a blade like member 86 made of the hard rubber is narrowly fixed between the plates 85 by means of screw or the equivalent. A first end of the blade 86 protrudes from the clamping plates 85. A second end of the blade 86 is formed slant.
  • a plate holding cam 87 is fixed by means of a pair of machine screws 88 on the right side of the cylinder 1.
  • An elongate hole 87a formed with the cam 87 adjusts the position thereof.
  • the above printing unit is operated as follows.
  • the position of the plate holding cam 87 is adjusted. As shown in Fig. 9, when the plate 12 of the first clamp A is opened, the top end of the plate 3 is guided between the block 10 and the plate 12. Then, when the operation switch (not illustrated) is manipulated, the arm 42 is moved by an air cylinder (not illustrated) in the axial direction (shown by the chain line) of the cylinder 1. After, the roller 41 is beaten by the arm 42 and the lever 40 is pivoted clockwise.
  • the portion 43b pressed by the roller pivots the lever 43 counterclockwise.
  • the arm 42 After beating the roller 41, the arm 42 returns to the original position so as to turns the cylinder 1 in the counterclockwise direction viewed in Fig. 12. Subsequently, as shown in Fig. 8, the cylinder 1 comes to stop at the position where the roller 51 meets the arm 42.
  • the roller 51 is kept at the stopping position to meet the arm 42.
  • the arm 66 is moved by the air cylinder (not illustrated) in the radial direction of the cylinder 1 (shown by the chain line arrow) when the operation switch (not illustrated) is manipulated in this state. Then, the portion 64c is beaten by the driving arm 64, resulting in the pivoting movement of the first and second levers 64, 65. Therefore, the shaft S3 is turned counterclockwise.
  • each pinion 61 of the shaft S3 is turned counterclockwise in order for each rack 62 to move in the direction of the chain arrow against the force of the spring 29 together with the block 20.
  • the bottom end of the plate 3 is precisely placed between the block 20 and the plate 21 while being sliding over the chamfer 20c of the block 20. At this time, the arm 66 remains in contact with the portion 64c.
  • the arm 42 After beating the roller 51, the arm 42 returns to the original position.
  • the cylinder 70 is activated to return the rod 70a to the contracted position.
  • the roller 79 and the blade 86 separate from the cylinder 1 in the sequence reverse to the above.
  • the plate 3 is mounted on the cylinder 1 with the top and bottom ends clamped by the first and second plate clamps A, B, respectively.
  • the arm 66 is moved in the direction of chain line, resulting in the movement of the block 20 in accordance with the force of spring 29.
  • the plate 3 is tightly mounted on the cylinder 1.
  • the rack 62 is moved in the same direction as the block 20.
  • the pinion 61 and the driving shaft S3 are turned clockwise in Fig. 13.
  • the first and second levers 64, 65 are pivoted counterclockwise in Fig. 12, and return from the chain line position towards the solid line position.
  • the cylinder 1 When the plate 3 is to be detached from the cylinder 1, the cylinder 1 is turned in the reverse direction by manipulating the operation switch (not illustrated). Then, the portion 65c is moved to the position where the portion 65c is beaten by the end of the arm 66. The spur gear 63 and the driving shaft S3 are turned by the arm 66 in the same direction as clamping the plate 3. The block 20 is moved in the direction as shown by the chain line arrow in Fig. 13. As a result, the tension of the plate 3 against the cylinder 1 is released. At this time, the end of the arm 60 remains in contact with the portion 65c.
  • the plate cylinder 1 is turned for releasing the roller 45 to move and meet the end of the arm 42.
  • the end of the arm 42 is beaten by the roller 45.
  • the roller 41 is beaten by the portion 43b, and turned in the releasing direction , i.e. counterclockwise viewed in Fig. 7.
  • the connecting shaft 18, S1 are turned in the releasing direction.
  • the cam face Sa comes to contact the step 12a.
  • the clamping plate 12 is opened by the force of the spring 15.
  • the top end of the plate 3 is released from the first clamp A.
  • the arm 42 thus, returns to the original position after beating the roller 45.
  • the nut 39b is turned to advance the bolt 39 in the protruding direction of the chain line arrow in Fig. 3.
  • the spring 35 is compressed, as shown in Fig. 5, for moving the blocks 20 of the second clamp B in the direction of the chain line arrow against the spring force.

Landscapes

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

Claims (5)

  1. Vorrichtung zum Einspannen von Platten an einer Offset-Druckmaschine (100) welche umfasst:
    einen Plattenzylinder (1) für die Aufnahme einer Druckplatten (3), wobei diese Druckplatten (3) ein erstes Ende und ein zweites Ende aufweisen;
    eine erste Spannvorrichtung (A) zum Einspannen des ersten Endes der Druckplatte (3);
    eine zweite Spannvorrichtung (B) zum Einspannen des zweiten Endes der Druckplatte (3);
    eine Nute (2) für die Aufnahme der ersten (A) und zweiten (B) Spannvorrichtung
    wobei die erste (A) und die zweite (B) Spannvorrichtung so ausgebildet sind, dass sie in axialer Richtung des Plattenzylinders (1) bewegt werden können und;
    mit einer Schraube (39; C), welche mit einem ersten Ende der bewegbaren Spannvorrichtung (B) verbunden ist, um die Spannvorrichtung (B) in axialer Richtung des Plattenzylinders (1) zu bewegen und um die Verspannung der Druckplatte (3) auszugleichen, dadurch gekennzeichnet, dass
    die andere Spannvorrichtung (A) in der Nute (2) drehbar abgestützt ist; und
    dass ein Vorspannglied (36, 37, 37a, 2b) an einem zweiten Ende der bewegbaren Spannvorrichtung (B) angeordnet ist, um die Schraube (39; C) gegen die innere Oberfläche (2c) der Nute (2) zu pressen.
  2. Vorrichtung nach Anspruch 1, bei welcher jede der Spannvorrichtungen (A; B) einen Block (10; 20) und ein Glied zum Öffnen (12; 21) aufweist, um zusammen mit dem Block (10; 20) das Ende der Druckplatte (3) einzuspannen.
  3. Vorrichtung nach Anspruch 2, bei welcher das Glied zum Öffnen (12; 21) mit einer Nockenwelle (S1; S2) geschlossen wird, welche zwischen einer Nute (10a; 20a) und einem Absatz (12a; 21a), der mit dem Glied zum Öffnen (12, 21) gebildet wird und der mit der Spannkraft einer Federeinrichtung (15; 25) geöffnet wird, welche zwischen dem Block (10; 20) und dem Glied zum Öffnen (12; 21) angeordnet ist.
  4. Vorrichtung nach den vorherstehenden Ansprüchen, bei welcher die Spanneinrichtung eine Schraubenfeder (35) umfasst.
  5. Vorrichtung nach Anspruch 3, welche weiter eine Betätigungseinrichtung (E) aufweist, die mit der Nockenwelle (S1; S2) verbunden ist, wobei die Betätigungseinrichtung (E) und die Spannvorrichtung (A; B) den Einspannvorgang ausführen.
EP19930810355 1992-10-29 1993-05-14 Vorrichtung zum Spannen von Druckplatten an Offsetdruckmaschinen Expired - Lifetime EP0595760B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP4291827A JP2837323B2 (ja) 1992-10-29 1992-10-29 印刷機の版ひねり調整機構
JP291827/92 1992-10-29

Publications (2)

Publication Number Publication Date
EP0595760A1 EP0595760A1 (de) 1994-05-04
EP0595760B1 true EP0595760B1 (de) 1997-08-20

Family

ID=17773933

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19930810355 Expired - Lifetime EP0595760B1 (de) 1992-10-29 1993-05-14 Vorrichtung zum Spannen von Druckplatten an Offsetdruckmaschinen

Country Status (3)

Country Link
EP (1) EP0595760B1 (de)
JP (1) JP2837323B2 (de)
DE (1) DE69313242T2 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08156229A (ja) * 1994-11-29 1996-06-18 Nagano Japan Radio Co 印刷機の版クランプ装置
GR960100252A (el) * 1996-07-17 1998-03-31 Μπαρες τσιγκων εκτυπωτικων μηχανων οσφετ για την ταχεια και σωστη τοποθετηση του τσιγκου επι του κυλινδρου (καζανι).

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3156184A (en) * 1962-02-20 1964-11-10 Harris Intertype Corp Plate clamp
DE3419941A1 (de) * 1984-04-26 1986-01-16 Alois 8000 München Zimmerer Offset-druckzylinder mit druckplatte
EP0431575B1 (de) * 1989-12-06 1995-10-04 Komori Corporation Platteneinbringungseinrichtung für Druckpressen

Also Published As

Publication number Publication date
EP0595760A1 (de) 1994-05-04
JPH06134962A (ja) 1994-05-17
JP2837323B2 (ja) 1998-12-16
DE69313242D1 (de) 1997-09-25
DE69313242T2 (de) 1998-03-19

Similar Documents

Publication Publication Date Title
US5218907A (en) Plate exchange apparatus for printing press
US5383402A (en) Apparatus for mounting plate on plate cylinder
EP0516260B1 (de) Vorrichtung zum Aufspannen von Druckplatten auf den Plattenzylinder
EP0663292B2 (de) Druckplattenbefestigungsgerät für eine Bogendruckmaschine
DE3921999A1 (de) Bogen-rotationsdruckmaschine fuer das bedrucken der vorderseite und der rueckseite
EP0534579B2 (de) Vorrichtung zum Wechseln von Druckplatten in einer Rotationsdruckmaschine
JP2929508B2 (ja) フック縁部を備えた容易にたわみ可能なシート状の対象物の取り付け、取り外し及び搬送のための装置
JP2911815B2 (ja) 胴入れおよび胴逃しのための装置
US5467711A (en) Plate exchange apparatus for printing press
EP0595760B1 (de) Vorrichtung zum Spannen von Druckplatten an Offsetdruckmaschinen
US4702470A (en) Paper supplying device for perfecting printing machine
EP0595762B1 (de) Vorrichtung zum Spannen von Druckplatten an Offsetdruckmaschinen
EP0595761B1 (de) Vorrichtung zum Spannen von Druckplatten an Offsetdruckmaschinen
US5347928A (en) Plate clamping unit for offset press
AU748606B2 (en) Positioning device of a flexible printing plate on a plate cylinder
JPH02553A (ja) 熱転写カラープリンタ
JP2579079B2 (ja) 輪転印刷機の圧胴の支持装置
US5520111A (en) Plate exchange apparatus for printing press
JPH032668B2 (de)
GB2122944A (en) Offset perfecting press
US5688068A (en) Phase adjustment fixing apparatus for cam
JP4603118B2 (ja) 印刷機胴上で胴ばりを強く締付けるためのクランプ装置および印刷機
JPS63118255A (ja) 枚葉輪転印刷機の版万力装置
JPH045323Y2 (de)
JP2560089Y2 (ja) 印刷機の刷版交換装置

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE DE FR GB IT NL SE

17P Request for examination filed

Effective date: 19941101

17Q First examination report despatched

Effective date: 19951027

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE FR GB IT NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19970820

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 19970820

Ref country code: FR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19970820

Ref country code: BE

Effective date: 19970820

REF Corresponds to:

Ref document number: 69313242

Country of ref document: DE

Date of ref document: 19970925

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19971120

EN Fr: translation not filed
NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20100331

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20110520

Year of fee payment: 19

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20110514

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110514

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 69313242

Country of ref document: DE

Effective date: 20121201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20121201