JP2011255546A - Onefold plate cylinder changing method for twofold plate cylinder rotary press, and rotary press - Google Patents

Abstract

PROBLEM TO BE SOLVED: To replace a twofold plate cylinder with a onefold plate cylinder using a rotary press having the existing twofold plate cylinder.SOLUTION: A twofold plate cylinder mounted with a press plate and a blanket cylinder 4 for transferring ink supplied to the twofold plate cylinder to a web 3 are contactably disposed, and an ink supply device having an inking roller for supplying ink on the surface of the press plate while making contact with the twofold plate cylinder and a dampening device provided with a form dampening roller for supplying dampening water to the surface of the press plate are disposed in the rotary press, from which the twofold plate cylinder, the inking roller, and the form dampening roller are removed, a bearing support hole 16 of a side frame 9 that has rotatably supported a support shaft of the twofold plate cylinder is blocked with an auxiliary frame 23 having bearings rotatably supporting a onefold plate cylinder, the inking rollers 20, 21 and the form dampening roller 22 are disposed around the onefold plate cylinder 2 supported with the bearing, rollers 26, 7 are disposed so that they are rotated cooperatively between the inking rollers 20, 21 and an existing reciprocating roller 10, and the form dampening roller 22 is disposed so that it rotates cooperatively between the onefold plate cylinder 2 and an existing water reciprocating roller 8.

Description

  The present invention relates to a method for replacing a 1x printing drum to a 2x printing drum press frame and a rotary press.

  As shown in FIG. 4, the printing section of the newspaper offset rotary press includes a plate cylinder 37 on which a printing plate 36 is mounted, and a blanket cylinder 4 that transfers ink supplied to the printing plate 36 to the web 3. It is arranged so that it can come into contact. Around the plate cylinder 37, there are provided an ink supply device 5 for contacting the plate 36 and supplying ink to the surface of the plate 36, and a dampening device 6 for supplying dampening water to the surface of the plate 36. It has been. In addition, the arrow in a figure shows the advancing direction of a web, each cylinder, and the rotation direction of a roller.

  As the plate cylinder 37 in a newspaper offset rotary press, a 2-page circumference × 4 pages width or a 2-page circumference × 2 pages width (hereinafter referred to as “double plate cylinder”) is usually used. The double plate cylinder is generally used with two or one printing plate having a length of 2 pages × 2 pages (2L2W) mounted thereon. One page means one page of the broad sheet.

  The ink supply device 5 includes an ink form roller 38 in contact with the double plate cylinder, ink reciprocating rollers 10 and 11, ink kneading rollers 12 and 13, diamond roller 14, ink base roller 15 and ink fountain 35. Has been placed. The ink reciprocating rollers 10 and 11 are supported on the side frame 9 so as to be rotatable and slidable in the axial direction. The ink reciprocating rollers 10 and 11 are rotated by a gear connected to a motor (not shown) that drives a double plate cylinder or a blanket cylinder. It is designed to reciprocate in the axial direction.

  The dampening device 6 includes a swim roller 39 in contact with the double plate cylinder 37, a water reciprocating roller 8, and a spray dampener 34. The spray dampener 34 is configured to spray and supply water to the water reciprocating roller 8.

  The water reciprocating roller 8 is supported on the side frame 9 so as to be rotatable and slidable in the axial direction. The water reciprocating roller 8 is rotated by connecting a gear to a motor (not shown) for driving the double plate cylinder or the blanket cylinder and is reciprocated in the axial direction.

  As shown in FIG. 5A, the drive side gear train is the gear 27 of the double plate cylinder 37 and the gears 28 to 30 of the ink reciprocating rollers 10 and 11 and the ink source roller 15 as shown in FIG. Are connected via an intermediate gear 31 and are rotatable in a fixed relationship. On the dampening device side, as shown in FIG. 5B, the gear 27 of the double plate cylinder 37 and the gear 32 of the water reciprocating roller 8 are connected via an intermediate gear 31 to be rotatable.

  When the plate cylinder is doubled like the above-mentioned rotary press, the rotary press itself becomes large due to its large diameter, and the rotary press is becoming a tower unit for multicolor printing. There is a problem that it is difficult to reduce the size and space of the rotary press itself.

  In addition, when the double plate cylinder is used, the printing plate needs to be two pages long. Therefore, compared with the single plate cylinder described later, the running cost is increased and the material cost is a problem in producing the plate cylinder. There is a problem that costs such as man-hours and time for processing the plate cylinder increase.

  Further, since the double plate cylinder also increases the machine weight, there is also a problem that the amount of power consumed to drive the cylinder is increased.

  Therefore, in order to solve the above-mentioned problems of the double plate cylinder, the diameter of the plate cylinder is half the diameter of the double plate cylinder. One page circumference × 4 pages width or one page circumference × 2 pages width ( Hereinafter, a rotary press of “single-size plate cylinder” has been used (see Patent Document 2).

JP 2007-290187 A JP 2003-118069 A

  However, in order to halve the running cost of the printing plate, there is a problem that the equipment cost becomes high if a new 1x printing drum press is installed instead of the existing 2x printing press.

  Accordingly, the present invention provides a method and a rotary press for replacing a double plate cylinder with a single plate cylinder by using an existing double plate cylinder rotary press.

  The double plate cylinder replacement method of the double plate cylinder press according to the present invention includes a double plate cylinder on which a printing plate is mounted, and a blanket that transfers ink supplied to the double plate cylinder to a web. An ink supply device having an inking roller for supplying ink to the surface of the printing plate in contact with the double plate cylinder and water for supplying dampening water to the surface of the printing plate The side frame that supported the support shaft of the double plate cylinder by removing the double plate cylinder, the ink form roller, and the water application roller from the double plate cylinder rotary machine in which the dampening device with the form roller was arranged The bearing support hole is closed with an auxiliary frame provided with a bearing that supports the 1 × plate cylinder, and an ink form roller and a swim roller in contact with the 1 × version cylinder are arranged around the 1 × plate cylinder supported by the bearing. , Existing ink for ink form roller and ink supply device The roller is placed in contact with the reverse roller, and the roller is rotated or rotated by a driving means. The swim roller is arranged between the double plate cylinder and the existing water reciprocating roller of the dampening device. It arrange | positions so that it may rotate between.

  In the rotary press of the present invention, a double plate cylinder on which a printing plate is mounted and a blanket cylinder on which a blanket that transfers ink supplied to the double plate cylinder to a web is disposed so as to be in contact with each other, An ink supply device having an ink form roller for supplying ink to the surface of the printing plate and a dampening device having a water application roller for supplying dampening water to the surface of the printing plate are disposed in contact with the double plate cylinder. In the double plate cylinder rotary machine, the double plate cylinder supported by the side frame, and the side on which the support roller of the double plate cylinder is supported by removing the ink form roller and the water form roller. The support hole of the bearing of the frame is closed with an auxiliary frame provided with a bearing that supports the 1 × plate cylinder, and an ink form roller and a water application roller that are in contact with the 1 × plate cylinder are arranged around the 1 × plate cylinder, Of ink form roller and ink supply device The roller is disposed in contact with the ink reciprocating roller, and the roller is disposed so as to be rotated or rotated by driving means. It arrange | positions so that it may rotate with a reciprocating roller, It is characterized by the above-mentioned.

  Since the present invention uses the support holes vacated by removing the double plate cylinder from the frame of the existing double plate cylinder rotary press, and uses the existing ink supply device and dampening device members as much as possible, By removing the double plate cylinder and replacing it with the single plate cylinder, the running cost of the printing plate can be reduced by 50%. Thereby, consumption of the raw material (aluminum with a purity of 99.5% or more) used for the printing plate can be suppressed. In addition, the cost can be reduced compared to newly installing a 1x printing press.

  In addition, several rollers that do not change the rotation direction of these rollers are arranged between the ink forming roller and the existing ink reciprocating roller of the ink supply device, By arranging several rollers that do not change the rotation direction of these rollers between the rollers, the rollers can be used as they are without changing the rotation direction of the rollers of the existing ink supply device or dampening device.

  Further, by rotating the added roller by the driving means, it is possible to reliably rotate the roller and supply ink and water to the plate cylinder even in high-speed printing.

FIG. 3 is a layout diagram of a roller and a 1 × plate cylinder of a rotary press equipped with a 1 × plate cylinder. It is a figure which shows the state which removed the roller unnecessary in order to attach a 1 time plate cylinder from the rotary press of a 2 times plate cylinder. FIG. 2 shows a gear train on the drive side of the rotary press of FIG. 1, (a) a gear train on the ink supply device side, and (b) a gear train on the dampening device side. It is a figure which shows the printing part of the rotary press provided with the conventional double plate cylinder. FIG. 5 shows a gear train on the drive side of the conventional rotary press of FIG. 4, (a) a gear train on the ink supply device side, and (b) a gear train on the dampening device side.

  Embodiments of the present invention will be described with reference to the drawings.

  As shown in FIG. 1, the printing unit of the rotary press of the present invention is similar to the rotary press shown in FIG. 4. A blanket cylinder 4 for transferring the ink supplied to the cylinder 2 to the web 3 is arranged so as to be in contact with the printing cylinder 2, and the printing plate of the 1 × printing cylinder 2 is in contact with the 1 × printing cylinder 2 around the 1 × printing cylinder 2. An ink supply device 5 for supplying ink to the surface of 1 and a dampening device 6 for supplying dampening water to the surface of the printing plate 1 are provided.

  As shown in FIG. 1, the rotary press in which the double plate cylinder 37 is removed from the double plate cylinder rotary press shown in FIG. 4 and replaced with the single plate cylinder 2 has a double plate diameter of the double plate cylinder 2. Since it becomes half of the cylinder, the distance between the 1 × plate cylinder 2 and the existing ink reciprocating roller 10 of the ink supply device 5 becomes longer, and the existing water reciprocating roller of the 1 × plate cylinder 2 and the dampening device 6 The distance between the ink supply device 5 and the dampening device 6 is also changed. In addition, the arrow in a figure shows the advancing direction of a web, each cylinder, and the rotation direction of a roller.

  The process of removing the double plate cylinder from the double plate cylinder rotary machine shown in FIG. 4 and replacing it with the single plate cylinder will be described.

  As shown in FIG. 2, the double plate cylinder 37 supported between a pair of opposing side frames 9 shown in FIG. It is removed from the frame 9, and the blanket cylinder 4, ink reciprocating rollers 10, 11, ink kneading rollers 12, 13, diamond roller 14, and ink base roller 15 are left as they are.

  By removing the double plate cylinder, the support hole 16 of the bearing that supports the double plate cylinder support shaft is opened in the side frame 9.

  The method of fixing the 1 × plate cylinder to the opening of the bearing support hole mark is as follows.

  The auxiliary frame 23 is fixed to the side frames 9 on both sides with bolts 24 so as to close the bearing support holes 16 of the double plate cylinder so that the single plate cylinder 2 on which the printing plate 1 is mounted is supported at a position in contact with the blanket cylinder 4. To do. The auxiliary frame 23 is attached to the inside of the side frame 9 on both the operation side and the drive side. Further, on the drive side where the gears are arranged, an auxiliary frame 23 is also provided outside the side frame 9 in order to support a group of gears fixed to the support shaft of the 1 × plate cylinder 2 on the outside of the side frame 9. Before fixing the auxiliary frame, a bolt hole for screwing the bolt 24 into the side frame 9 is provided.

  The auxiliary frame 23 is provided with an eccentric sleeve 25 that supports the support shaft of the 1 × plate cylinder 2. The eccentric sleeve 25 enables the 1 × plate cylinder 2 to contact and separate from the blanket cylinder 4.

  Since there is a distance between the ink form rollers 20 and 21 and the ink reciprocating roller 10, they do not contact each other. Therefore, the rubber roller 26 and the ink transfer roller 7 are disposed between the ink form rollers 20 and 21 and the ink reciprocating roller 10. The rubber roller 26 and the ink passing roller 7 are rotatably supported on the inner surface side of the auxiliary frame 23 or the side frame 9. The ink form rollers 20 and 21 are supported by an arm (not shown) supported by the rubber roller 26 so as to be able to trip.

  The rubber roller 26 is arranged so that the ink form rollers 20 and 21 are rotated by being pressed against the 1 × plate cylinder 2 and the ink reciprocating roller 10 rotating in the same direction as the 1 × plate cylinder 2. In FIG. 1, the ink form rollers 20 and 21 are disposed between the 1 × plate cylinder 2 and the ink reciprocating roller 10 through the rubber roller 26 and the ink transfer roller 7 so as to be able to rotate.

  The dampening device 6 is changed in arrangement so that the swim roller 22 is in contact with both of the 1 × plate cylinder and the existing water reciprocating roller 8, and an arm (not shown) pivotally supported by the water reciprocating roller 8. ) Is supported in a trippable manner. In the second stage dampening device, two rubber rollers 33, 33 ′ are interposed between the swim roller 22 and the existing water reciprocating roller 8 so as to be able to rotate.

  As shown in FIG. 3A, the drive side gear train is the gear 27 of the 1 × plate cylinder 2 and the gears 28 to 30 of the ink reciprocating rollers 10 and 11 and the ink source roller 15 as shown in FIG. Are connected via an intermediate gear 31 disposed on the side frame 9 so as to be rotatable in a fixed relationship. Since the distance between the 1 × plate cylinder 2 and the existing ink reciprocating roller 10 of the ink supply device 5 is increased by replacing the 1 × plate cylinder 2, the intermediate gear 31 is increased and connected to the conventional gear train for rotation. enable.

  In addition, since it is considered that the rotation cannot be sufficiently performed at the time of high-speed printing due to the addition of each roller, the rubber roller 26 is pivotally supported by the auxiliary frame 23 and drives the 1 × plate cylinder via a gear or a belt. You may rotate by. At this time, the support hole of the double plate cylinder bearing may be enlarged and connected on the outer surface side of the side frame with a gear train as shown in FIG. 3, or on the inner surface side of the side frame with a gear or belt. May be.

  On the dampening device side, as shown in FIG. 3B, the gear 27 of the plate cylinder 2 and the gear 32 of the water reciprocating roller 8 are connected via an intermediate gear 31 to be rotatable.

  In the second-stage dampening device, two rubber rollers 33 and 33 'are interposed between the water-filling roller 22 and the existing water reciprocating roller 8, but the rubber roller 33' is an auxiliary. It is supported by the frame 23 and may be rotated by driving the 1 × plate cylinder through a gear or a belt.

  In the rotary printing press configured as described above, water is supplied from the dampening device 6 to the non-image portion of the printing plate 1 attached to the peripheral surface of the plate cylinder 2.

  In the dampening device 6, the water sprayed from the spray dampener 34 is supplied to the water reciprocating roller 8 and transferred to the water application roller 22, and the water transferred to the water application roller 22 is transferred to the 1 × plate cylinder 2. It is supplied to the non-image area of the attached printing plate 1.

  Ink is supplied by the ink supply device 5 to the printing plate 1 in which water is supplied to the non-image area. In the ink supply device 5, the ink stored in the ink fountain 35 is drawn out by the ink source roller 15. Part of the ink on the ink source roller 15 is delivered to the diamond roller 14 that engages with the ink source roller 15.

The ink transferred to the diamond roller 14 is transmitted to the ink kneading roller 13, the ink reciprocating roller 11, the ink kneading roller 12, the ink reciprocating roller 10, the ink transferring roller 7, the rubber roller 26, and the ink form rollers 20, 21. , Supplied to the image line portion of the printing plate 1. The ink (image) transferred to the image line portion of the printing plate 1 is transferred to the blanket cylinder 4. The image transferred to the blanket cylinder 4 is transferred onto both sides of the web 3 running from the bottom to the top between the left and right blanket cylinders 4 and printed.
In addition, although the spray dampener is described as the dampening water supply device in the figure, a spray method, a spiral brush method, or the like may be used. As the ink supply device, an ink fountain method is described. A method, a keyless method, or the like may be used.

  The ink form roller and the water form roller may be pivotally supported by an eccentric sleeve provided on the auxiliary frame so as to be tripped.

  Further, the shaft of the 1 × plate cylinder is inserted into the support hole of the bearing of the 2 × plate cylinder, but the support hole may be enlarged depending on the size of the shaft of the 1 × plate cylinder.

  The gear train is provided on the outer surface of the side frame as shown in FIG. 3, but may be provided on the inner surface side of the side frame if there is a space.

1: printing plate 2: 1x plate cylinder 3: web 4: blanket cylinder 5: ink supply device 6: dampening device 7: ink transfer roller 8: water reciprocating roller 9: side frame 10: ink reciprocating roller 11: ink reciprocating Roller 12: Ink kneading roller 13: Ink kneading roller 14: Diamond roller 15: Ink roller 16: Bearing support hole 20: Inking roller 21: Inking roller 22: Swim roller 23: Auxiliary frame 24: Bolt 25 : Eccentric sleeve 26: Rubber roller 27: Gear 28: Gear 29: Gear 30: Gear 31: Intermediate gear 32: Gear 33, 33 ': Rubber roller 34: Spray dampener 35: Ink fountain 36: Printing plate 37: Plate cylinder (2 Double plate cylinder)
38: Inking roller 39: Swim roller

Claims (8)

A double plate cylinder on which the printing plate is mounted on the surface and a blanket cylinder mounted with a blanket for transferring the ink supplied to the double plate cylinder to the web are arranged so as to be in contact with each other, in contact with the double plate cylinder, Double plate cylinder press in which an ink supply device having an ink form roller for supplying ink to the surface of the printing plate and a dampening device having a dampening roller for supplying dampening water to the surface of the plate are arranged Remove the double plate cylinder, ink form roller and swim roller from
The bearing support hole of the side frame supporting the support shaft of the double plate cylinder is closed with an auxiliary frame equipped with a bearing supporting the double plate cylinder,
An ink form roller and a water form roller that are in contact with the 1 × plate cylinder are arranged around the 1 × plate cylinder supported by the bearing,
A roller is disposed between the ink form roller and the existing ink reciprocating roller of the ink supply device, and the roller is rotated or rotated by driving means. A method of replacing a 1x plate cylinder of a 2x plate cylinder rotary press, wherein the dampening device is arranged so as to rotate with an existing water reciprocating roller of a dampening device.   Several rollers between the ink form roller and the existing ink reciprocating roller of the ink supply device that do not change the rotation direction of the ink form roller before removal from the double plate cylinder rotary machine and the rotation direction of the existing ink reciprocating roller 2. The method for replacing a 1 × plate cylinder of a 2 × plate cylinder press according to claim 1, wherein:   2. A roller according to claim 1, wherein the roller is arranged in contact with the water reciprocating roller of the dampening device, and the roller is arranged so that it can be rotated or rotated by driving means. Alternatively, a method for replacing a 1 × plate cylinder of a 2 × plate cylinder press according to 2 above.   A plurality of rollers that do not change the rotation direction of the pre-removal roller and the pre-removal water roller are arranged between the pre-removing roller and the existing water reciprocating roller of the dampening device. The method for replacing a 1 × plate cylinder of a 2 × plate cylinder rotary press according to claim 3. A double plate cylinder on which a printing plate is mounted and a blanket cylinder on which a blanket for transferring ink supplied to the double plate cylinder to a web is disposed so as to be in contact with each other and in contact with the double plate cylinder A double plate cylinder in which an ink supply device having an ink form roller for supplying ink to the surface of the printing plate and a dampening device having a water application roller for supplying dampening water to the surface of the plate are arranged At a turning point,
The double plate cylinder supported by the side frame, and the support hole of the bearing of the side frame which supported the support shaft of the double plate cylinder by removing the ink form roller and the water roller, and the single plate The ink-covering roller and the ink-feeding device, which are closed by an auxiliary frame provided with a bearing for supporting the cylinder, are arranged around the 1-times plate cylinder and in contact with the 1-size plate cylinder and the water-forming roller. A roller is arranged in contact with the ink reciprocating roller, and this roller is arranged so as to be rotated or rotated by a driving means. A rotary press characterized by being arranged so as to rotate between the two.   Several rollers between the ink form roller and the existing ink reciprocating roller of the ink supply device that do not change the rotation direction of the ink form roller before removal from the double plate cylinder rotary machine and the rotation direction of the existing ink reciprocating roller The rotary press according to claim 5, wherein   The roller is disposed between the swim roller and the existing water reciprocating roller of the dampening device, and the roller is arranged to be rotated or rotated by driving means. A rotary press according to 5 or 6.   Several rollers that do not change the rotation direction of the water-filling roller and the existing water reciprocating roller before being removed from the double plate cylinder press are arranged between the water-sealing roller and the existing water reciprocating roller of the dampening device. The rotary press according to claim 7.

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