JP2002011852A - Ink unit for rotary printing press - Google Patents

Abstract

(57) [Problem] To provide an inking device for a rotary printing press capable of easily performing maintenance and inspection work. SOLUTION: An ink fountain 27 for storing ink by a bottom plate 27a and a weir 27b, a fountain roller 28 provided in the ink fountain 27 and drawing out ink from a gap between the bottom plate 27a of the ink fountain 27, and a fountain roller 28 adjacent to the fountain roller 28. And a call roller 29 which is detachably supported by the support holder 293 and receives ink from the fountain roller 28, the call roller 29 is moved along the upper end surface of the weir 27b of the ink fountain 27. The call roller 29 so that it can be rolled and delivered to the support holder 293.
Is provided with a guide groove 29a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an inking device for a rotary printing press.

[0002]

2. Description of the Related Art For example, a double-sided multi-color offset printing machine includes:
Four plate cylinders are respectively in contact with the pair of blanket cylinders, and these plate cylinders are provided with ink devices via rollers. In this inking device, the ink in the ink fountain is transferred from the fountain roller by the swinging (reciprocating) movement of a call roller between the fountain roller of the ink fountain for storing the ink and the uppermost kneading roller of the roller group. It can be transferred to a roller group.

In particular, in an inking device for performing rainbow printing, an assembling roller comes into contact with the most upstream roller in the roller group,
Two sets of ink fountains, fountain rollers, and call rollers are provided for the collecting rollers, and ink of different colors is stored in each of the ink fountains. It can be printed.

[0004]

In the conventional inking device for performing rainbow printing of a double-sided multi-color offset printing press as described above, maintenance and inspection is performed because the calling roller is radially disposed with respect to the collecting roller. When the user tries to attach and detach the calling roller by the method, the attaching / detaching direction is different for each calling roller, and the attaching / detaching operation is very troublesome. In particular, arranging a heavy load roller to a predetermined position near the collecting roller while handling the load roller requires a great deal of labor.

[0005] Such a problem is not limited to an inking device for performing rainbow printing of a two-sided multicolor offset printing press, but also to other inking devices of a two-sided multicolor offset printing press.
In the case of an inking device of a rotary printing press, this can occur in the same manner as in the case described above.

In view of the above, an object of the present invention is to provide an ink device for a rotary printing press that can easily perform operations related to maintenance and inspection.

[0007]

In order to solve the above-mentioned problems, an ink device for a rotary printing press according to the present invention is provided in an ink fountain for storing ink by a bottom plate and a weir, and provided in the ink fountain. A rotary printing press comprising: a fountain roller that draws out the ink from a gap between the fountain and the bottom plate; and a call roller that is removably supported by a support member adjacent to the fountain roller and receives the ink from the fountain roller. In the inking device of (1), a rolling portion is provided on the call roller so that the call roller can be rolled along the upper end surface of the weir of the ink fountain and transferred to the support member.

[0008] In the above-described inking device for a rotary printing press, a defining means for defining a rolling direction of the call roller is provided.

In the above-described inking device for a rotary printing press, the support member is opened upward to support the call roller, and a receiving portion having an inner surface chamfered at an end on the pot roller side. And a pressing portion for holding the call roller with respect to the receiving portion, and the interval between the rolling portion of the call roller and the outer peripheral surface of the call roller is adjusted by the weir of the ink fountain. The distance between the upper end surface and the outer peripheral surface of the pot roller is substantially the same.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the inking device of a rotary printing press according to the present invention is applied to an inking device for performing rainbow printing of a two-sided multicolor offset printing press will be described with reference to FIGS. 1 is an overall schematic structural view of a two-sided multicolor offset printing press, FIG. 2 is a side view showing a schematic configuration of an inking device, FIG. 3 is a plan development view of a main part of the inking device, and FIG.
FIG. 5 is an enlarged view of the extraction of the call roller portion, and FIG.

As shown in FIG. 1, the paper supply section 10 is provided with a paper supply table 11. The paper feed unit 10 includes a paper feed table 11
A feeder board 12 that feeds the upper sheet-like sheet 100 to the printing unit 20 one by one is provided. At the tip of the feeder board 12, a transfer cylinder 21a of the printing unit 20 is provided.
Is provided with a swing device 13 for transferring the sheet 100 to the vehicle.

The transfer cylinder 21a is in contact with a blanket cylinder 22a having a gripper device (not shown) via transfer cylinders 21b to 21d. The blanket cylinder 22b is in contact with the blanket cylinder 22a downstream of the transfer cylinder 21d. On the upstream side of the transfer cylinder 21d of the blanket cylinder 22a, a plurality (4 in this embodiment)
The plate cylinders 23a of the book are in contact with each other at predetermined intervals along the circumferential direction of the blanket cylinder 22a. Blanket cylinder 22
A plurality (four in the present embodiment) of plate cylinders 23b are in contact with each other at predetermined intervals along the circumferential direction of the blanket cylinder 22b on the upstream side of the blanket cylinder 22a. The transfer cylinder 21 is located downstream of the blanket cylinder 22a from the blanket cylinder 22b.
e is facing.

The transfer cylinder 21e includes a discharge cylinder 31 of the discharge section 30.
Are facing each other. A sprocket 32 is provided coaxially on the paper discharge cylinder 31. Also, the paper discharge unit 30 includes
A sprocket 33 is provided. A paper discharge chain 34 extends between the sprockets 32 and 33. The discharge chain 34 is provided with a plurality of discharge claws (not shown) at predetermined intervals. The discharge unit 30 is provided with discharge tables 35a and 35b on which the printed sheets 100 are stacked.

The plate cylinders 23a and 23b are provided with
Are in contact with each other. On the upstream side of the roller group 24 in contact with the plate cylinders 23a and 23b for performing rainbow printing, as shown in FIG.
Are facing each other. A first intermediate roller 26a is in contact with the collecting roller 25. The second intermediate roller 26b is in contact with the first intermediate roller 26a.

On the other hand, as shown in FIG. 2, ink fountains 27 for storing ink by a bottom plate 27a and a weir 27b are arranged near the collecting roller 25 and near the second intermediate roller 26b, respectively. These ink vases 27
Are provided with fountain rollers 28 for extracting the ink in the ink fountain 27 from the gap with the bottom plate 27a. The pot roller 28 and the second intermediate roller 26 located between the pot roller 28 near the collecting roller 25 and the collecting roller 25 and near the second intermediate roller 26b.
The call rollers 29 are respectively disposed between the call rollers 29 and b.

That is, one (lower) calling roller 2
9 to the collecting roller 25 via the intermediate rollers 26a and 26b.
One (lower) and the other (upper)
This makes it possible to form a working space between the call rollers 29 and to orient both call rollers 29 to substantially the same side in the radial direction of the collecting roller 25.

The call roller 29 is supported as shown in FIGS. 2 to 4. The support structure will be described below.

As shown in FIGS. 2 to 4, at both ends of a support shaft 291 rotatably supported by the frame 1, base ends of a support arm 292 are connected and supported, respectively. At the tips of these support arms 292, the call rollers 29
An annular support holder 293 which is a support member for supporting the call roller 29 via a bearing 294 attached to the shaft end of each of them is attached to each. The support holder 293 can be divided into two in the radial direction, is opened upward to be supported by the support arm 292 and supports the call roller 29, and has an end (one end) on the pot roller 28 side. Semicircular receiving portion 293a whose inner peripheral surface is chamfered
The end (the other end) of the receiving portion 293a on the side of the collecting roller 25 or the second intermediate roller 29 is rotatably pin-connected to the end (the other end) of the receiving portion 293a.
a holding portion 293b for holding the holding portion 293a, and a connector 293c for detachably connecting one end of the receiving portion 293a and one end of the holding portion 293b.

That is, the call roller 29 is detachably supported by the support holder 293 by operating the connecting member 293c of the support holder 293 to open and close the pressing portion 293b, and supported by driving means (not shown). Axis 2
By rotating the reciprocating member 91 in the circumferential direction at a predetermined cycle, it is possible to swing (reciprocate) between the pot roller 28 and the collecting roller 25 or the second intermediate roller 26b via the support arm 292. It has become.

As shown in FIG. 3, guide grooves 29 each having a size slightly larger than the width of the upper end surface of the weir 27b of the ink fountain 27 are formed at both ends of the call roller 29.
a are formed along the circumferential direction, and the guide groove 29 a has a paired interval width of the ink fountain 27.
Of the weir 27b is substantially the same size as the opposing interval width,
As shown in FIG. 5, the distance S1 between the bottom surface 29aa and the outer peripheral surface of the call roller 29 is determined by the weir 2 of the ink fountain 27.
The size is substantially the same as the distance S2 between the upper end surface of the roller 7b and the outer peripheral surface of the pot roller 28. In the present embodiment,
A rolling portion is constituted by the bottom surface 29aa of the guide groove 29a,
The defining means is constituted by the side surface 29ab of the guide groove 29a.

In such a two-sided multi-color offset printing press, the feeder board 1
When the sheet 100 is transferred to the transfer cylinder 21a through the swing device 13 and the swing device 13, the sheet 100 is transferred to the transfer cylinders 21b to 21b.
It is delivered to the holding claw device of the blanket cylinder 22a of the printing unit 20 via d, is held by the blanket cylinder 22a, and passes between the blanket cylinders 22a and 22b.

At this time, each plate cylinder 23
a and 23b are supplied with ink, respectively.
The ink corresponding to the pattern of the plate a is supplied to the outer peripheral surface of the blanket cylinder 22a, and the ink corresponding to the pattern of the plate of the plate cylinder 23b is supplied to the outer peripheral surface of the blanket cylinder 22b.
As the sheet 100 passes between the blanket cylinders 22a and 22b, the design of the blanket cylinder 22a is transferred to one surface of the sheet 100, and the design of the blanket cylinder 22b is transferred to the other surface of the sheet 100. Then, multicolor printing is performed on both sides of the sheet 100.

Here, for example, in an inking device for performing rainbow printing, the ink drawn out from the two ink fountains 27 by the fountain rollers 28 causes the collecting roller 25 or the second intermediate roller to be swayed by the above-described swinging of the recall rollers 29. The ink supplied to each of the rollers 26b and the ink supplied to the second intermediate roller 26b is supplied to the collecting roller 25 via the first intermediate roller 26a. Group 2
The rainbow printing is supplied to the plate cylinders 23a and 23b via the print cylinders 4a and 4b.

Subsequently, the sheet 100 on which double-sided multicolor printing is performed
Is transferred to the paper discharge cylinder 31 via the transfer cylinder 21e, and is replaced with a paper discharge claw of the paper discharge chain 33.
a and 35b and discharged.

When the two-sided multi-color printing is completed in this way and the calling roller 29 of the inking device for performing rainbow printing is to be removed for maintenance or the like, the connector 293c of the support holder 293 is operated to open the holding portion 293b. In this way, both the upper and lower call rollers 29 are connected to each ink fountain 2.
7 can be withdrawn from above.

For this reason, the removal of the call roller 29 from the support holder 293 can be easily performed.

On the other hand, when the call roller 29, which has been subjected to maintenance and inspection, is attached to the inking device, the guide groove 29a of the call roller 29 is made to coincide with the upper end surface of the weir 27b of the ink fountain 27, as shown in FIG. After placing the call roller 29 on the weir 27b of the ink fountain 27,
When the call roller 29 is rolled on the weir 27b of the ink fountain 27 so as to move the call roller 29 toward the support holder 293, the call roller 29 rolls along the weir 27b of the ink fountain 27, The call roller 29 can be rotatably supported on the support holder 293 via the bearing 294 by closing the holding portion 293b and operating the connecting tool 293c from the weir 27b to the receiving portion 293a of the support holder 293. can do.

For this reason, attachment of the call roller 29 to the support holder 293 can be easily performed.

Therefore, according to such an inking device, all of the call rollers 29 can be attached and detached from the same direction, and the heavy call roller 29 can be transferred to the support holder 293 without handling. Therefore, the work of attaching and detaching the calling roller 29 can be easily performed, and the work related to maintenance and inspection can be facilitated.

Further, when the call roller 29 is rolled on the weir 27b of the ink fountain 27, the side surface 29ab of the guide groove 29a of the call roller 29 is surely rolled along the upper end surface of the weir 27b. Since the rolling direction of the call roller 29 is defined, the call roller 29
Can be reliably transferred to the support holder 293.

The guide groove 29 of the call roller 29
The distance S1 between the bottom surface 29aa of the a and the outer peripheral surface of the call roller 29 and the distance S2 between the upper end surface of the weir 27b of the ink fountain 27 and the outer peripheral surface of the fountain roller 28 have substantially the same size. Therefore, the support holder 2 is rolled on the pot roller 28 without causing the call roller 29 to collide with the pot roller 28 or drop onto the pot roller 28.
93, the pot roller 28 and the call roller 29 can be prevented from being damaged, and the call roller 28 can be reliably transferred to the support holder 293.

The receiving portion 293a of the support holder 293
The inner peripheral side of the end on the side of the fountain roller 28 is chamfered to prevent the call roller 29 rolling on the weir 27b of the ink fountain 27 from colliding with the receiving portion 293a of the support holder 293. It is possible to prevent the receiving roller 293 and the receiving portion 293a of the support holder 293 from being damaged, and to reliably transfer the calling roller 29 to the support holder 293.

In this embodiment, concave guide grooves 29a are provided at both ends of the call roller 29.
For example, as shown in FIG. 6A, wheels 29 b having defining flanges 29 bb serving as defining means are provided on both ends of the call roller 29, respectively, on the inner side in the axial center direction of an outer peripheral surface 29 ba serving as a rolling portion. As shown in FIG. 6 (b), defining rings 29c, which are a pair of defining means, sandwiching the weir 27b of the ink fountain 27 are provided at both ends of the call roller 29, respectively, and the opposing side surfaces 29cb of the ring 29c are provided.
As shown in FIG. 6 (c), a wheel 29d having a concave guide groove formed to have a bottom surface 29da serving as a rolling portion and a side surface 29db serving as a defining means is called up. 6 (d), or provided at both ends of the roller 29, as shown in FIG.
It is also possible to support a pair of defining plates 29e serving as a pair of defining means so as to sandwich them from both ends, and to use the shaft end of the call roller 29 as the rolling portion 29ea as it is.

In this embodiment, the intermediate roller 2 is disposed between the lower call roller 29 and the collecting roller 25.
6a and 26b, the intermediate rollers 26a and 26b are disposed between the upper calling roller 29 and the collecting roller 25, or the intermediate roller
One or three or more may be provided.

Further, in this embodiment, a case has been described in which the present invention is applied to an inking device for performing rainbow printing of a two-sided multicolor offset printing press. However, the present invention is not limited to this. As a matter of course, as long as the ink device is a rotary printing press, it can be applied in the same manner as in the present embodiment.

[0036]

According to the inking device of the rotary printing press of the present invention, the roller is provided with a rolling portion so that the roller can be rolled along the upper end surface of the weir of the ink fountain and transferred to the support member. Therefore, the call roller can be easily transferred to the support member, and the work related to maintenance and inspection can be easily performed.

[Brief description of the drawings]

FIG. 1 is an overall schematic structural diagram of an embodiment of a two-sided multicolor offset printing press to which an inking device of a rotary printing press according to the present invention is applied.

FIG. 2 is a side view illustrating a schematic configuration of an inking device that performs rainbow printing of the two-sided multicolor offset printing press of FIG. 1;

FIG. 3 is a developed plan view of a main part of the inking device of FIG. 2;

FIG. 4 is an enlarged enlarged view of a call roller portion of the inking device of FIG. 2;

FIG. 5 is an operation explanatory view of the inking device of FIG. 2;

FIG. 6 is an explanatory diagram of another example of the inking device of the rotary printing press according to the present invention.

[Explanation of symbols]

 Reference Signs List 1 frame 10 paper feed unit 11 paper feed table 12 feeder board 13 swing device 20 printing unit 21a to 21e transfer cylinder 22a, 22b blanket cylinder 23a, 23b plate cylinder 24 roller group 25 collecting roller 26a first intermediate roller 26b second intermediate roller 27 Ink fountain 27a Bottom plate 27b Weir 28 Vase roller 29 Calling roller 29a Guide groove 29aa Bottom surface 29ab Side surface 29b Wheel 29ba Outer peripheral surface 29bb Defined flange 29c Defined ring 29ca Rolling part 29cb Opposite side surface 29d Wheel 29e Bottom surface 29db Bottom surface 29db Bottom surface 29db Part 291 Support shaft 292 Support arm 293 Support holder 293a Receiving part 293b Pressing part 293c Connector 294 Bearing 30 Discharge part 31 Discharge cylinder 32,33 Sprocket 34 Discharge chain 35a, 3 b paper discharge tray 100 sheet-fed paper

Claims (3)

[Claims] An ink fountain for storing ink by a bottom plate and a weir; a fountain roller provided in the ink fountain, for drawing out the ink from a gap between the ink fountain and the bottom plate; And a call roller that is detachably supported by a support member and receives the ink from the fountain roller. In the ink device of a rotary printing press, the call roller is rolled along the upper end surface of the weir of the ink fountain. A roller portion provided on the call roller so that the roller can be transferred to the support member. 2. The inking device for a rotary printing press according to claim 1, further comprising a defining unit that defines a rolling direction of the call roller. 3. The receiving part according to claim 1, wherein the supporting member is opened upward to support the call roller, and an inner surface of an end on the pot roller side is chamfered; And a pressing portion for holding a call roller with respect to the receiving portion, wherein an interval between the rolling portion of the call roller and an outer peripheral surface of the call roller is an upper end surface of the weir of the ink fountain. An ink device for a rotary printing press, wherein the size of the ink container is substantially the same as the distance from the outer peripheral surface of the pot roller.