JPH085178B2 - Cylinder switching device for rotary press with additional printing cylinder - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a rotary printing machine with an additional printing cylinder, and more particularly, an additional printing cylinder capable of selectively printing on both sides of a paper. The present invention relates to a cylinder switching device for a rotary printing press.

[Prior Art] A cylinder switching device for a rotary printing press with an additional printing cylinder according to the related art is provided with a plate cylinder that cooperates with each other, as disclosed in, for example, Japanese Patent Laid-Open No. 59-158257. An eccentric sleeve rotatably mounted on the journal of the blanket cylinder for displacing two blanket cylinders arranged close to each other so that they can come into contact with and separate from each other, and a fluid for rotationally driving the eccentric sleeve via a link mechanism. And a pressure cylinder.

Then, by the drive of the fluid pressure cylinder, the two adjacent
By displacing two blanket cylinders simultaneously on the same side, one upward and the other downward, (1) the two blanket cylinders are brought into contact with the cooperating plate cylinders and with each other, and the displacement direction is The position where the blanket cylinder on the side comes into contact with the additional printing cylinder (2) The contact and separation relationship of each cylinder is switched so that the plate cylinder, the blanket cylinder, and the additional printing cylinder are separated from each other. There is.

[Problems to be Solved by the Invention] In the cylinder switching device of the rotary printing press with the additional printing cylinder in the above-described conventional technique, the mutual positions of the cylinders are roughly classified into 2 as described above.
When printing only by type, when the contact / separation relationship of each cylinder is switched so as to achieve the positional relationship of (1) above, and when work such as paper threading is performed or when the rotary printing machine is stopped for a long time In the above, there was no choice but to switch the cylinders by switching the contact / separation relationship of the respective cylinders so that the mutual positions of the above (2) were obtained.

Therefore, even when the printing is not performed by the additional printing cylinder and only the two blanket cylinders are used for printing, the additional printing cylinder rotates with the blanket cylinder during the operation of the rotary printing press. Then, even if the contacting / separating relationship of the cylinders is switched so that the plate cylinder, the blanket cylinder, and the additional printing cylinder are located at the mutual positions of (2) above, which are separated from each other, the distance between the cylinders is changed. In the paper threading work, when the paper stock passes between the peripheral surface of the additional printing cylinder and the peripheral surface of the blanket cylinder that move in the direction opposite to the running direction in the paper threading operation, particularly in relation to the rotational operation after the paper threading, When the raw paper comes into contact with or separates from the additional printing cylinder by slight waviness, there is a disadvantage that it is broken by the force of the peripheral surface of the backward movement.

[Means for Solving the Problems] The cylinder switching device in the rotary printing press with the additional printing cylinder according to the present invention has plate cylinders cooperating with each other, and they are arranged side by side so that they can be displaced toward and away from each other. Two blankets in a rotary printing machine with an additional printing cylinder provided with an additional printing cylinder that is provided close to the two blanket cylinders and one of the two blanket cylinders so that the blanket cylinder can be moved toward and away from the blanket cylinders. A first displacement driving device for displacing the cylinders to move each blanket cylinder to and from a corresponding plate cylinder and to move both blanket cylinders to and from each other; and an additional printing device for displacing the additional printing cylinders. A second displacement driving device for bringing the cylinder into contact with and separating from either one of the blanket cylinders in the contacting and separating states, and if necessary,
A sequence operation control device for the first displacement driving device and the second displacement driving device is provided.

Then, as an example of a specific embodiment, the first displacement driving device includes an eccentric sleeve to which the journals of the respective blanket cylinders are rotatably mounted and which is supported by the frame, and an eccentric sleeve via a link mechanism. A first fluid pressure cylinder which is rotationally driven with respect to the first displacement cylinder; a second displacement driving device rotatably mounts a journal of the additional printing cylinder, an eccentric sleeve supported by the frame, and an eccentric sleeve rotation direction change And a second fluid pressure cylinder that rotationally drives the eccentric sleeve with respect to the frame via a link mechanism having a link. The sequence operation control device for the first fluid pressure cylinder and the second fluid pressure cylinder includes: It is a fluid pressure circuit whose circuit is switched by the operation of the first fluid pressure cylinder and the second fluid pressure cylinder.

[Operation] The first displacement drive device for the blanket cylinder and the second displacement drive device for the additional printing cylinder are individually operated, and the displacement of the blanket cylinder and the displacement of the additional printing cylinder are performed in combination.
A first position in which all cylinders are separated from each other, and a second position in which each blanket cylinder is separated from each plate cylinder, the blanket cylinders are also separated from each other, and the additional printing cylinder is in contact with one of the blanket cylinders. And a third position in which each blanket cylinder abuts its respective plate cylinder and also between the blanket cylinders, with the additional printing cylinders spaced from both blanket cylinders, and each blanket cylinder abutting its respective plate cylinder, In addition, the blanket cylinders are also brought into contact with each other, and the additional printing cylinder is selectively switched to four kinds of mutual positions with respect to the fourth position in which one of the blanket cylinders is brought into contact.

Then, the operation of the sequence operation control device automatically controls the operation of both displacement drive devices in a predetermined order.

[Examples] Examples of the present invention will be described with reference to the drawings.

In a rotary printing press, as shown in FIG. 1, blanket cylinders B1 and B2 are provided between opposing frames (not shown), with plate cylinders P1 and P2 that cooperate to print on both sides of the paper stock.
Are installed opposite to each other, and the additional printing cylinder A also has both blanket cylinders.
It is installed close to B1 and B2. That is, the journals 1, 1, 2, 2 at both ends of the blanket cylinders B1, B2 are rotatably fitted to the eccentric sleeves 3, 3, 4, 4 respectively.
3, 4, 4 are further rotatably fitted and adhered to the frame, and in the case of the additional printing cylinder A, the journals 5, 5 at both ends are rotatably attached to the inner eccentric sleeves 6, 6. Mating,
The inner eccentric sleeves 6,6 are fitted and mounted on the outer sleeves 7,7, and the outer sleeves 7,7 are rotatably fitted on the frame, respectively (see FIG. 4).

Two rotating shafts 8 and 9 each having one end protruding outside the frame are rotatably installed between the opposing frames, and a fixed shaft 10 is provided on the inner surfaces of both frames.

Continuous arms 11 and 12 are fixed to the end faces of the eccentric sleeve 3 and the eccentric sleeve 4, respectively, and the connecting arm 11 and the connecting arm 12 are connected by a connecting rod 13 so that the distance between the connecting points can be adjusted. . Specifically, one end of the connecting rod 13 is rotatably in the axial direction to one of the piece members 14 and 15 fitted into the connecting arms 11 and 12 so as to be rotatable about the rotating axis parallel to the rotating axis of the blanket cylinder. It is constrained and attached, and the other end is screwed to another piece member. As a result, the length between the connecting points of the connecting arms, that is, the relative rotational phase of the eccentric sleeves 3 and 4 can be adjusted by the rotating operation of the connecting rod 13, and the rotation of one of the eccentric sleeves 3 causes the other to move. The eccentric sleeves 4 are interlocked with each other in substantially the same rotation amount in opposite directions.

A rotary arm 16 is fixed to the end surface of one of the eccentric sleeves 3 along with the connecting arm 11, and a swing arm 17 is fixed to the rotary shaft 8 on the other hand. The end of the rotary arm 16 and the swing end of the swing arm 17 are connected by a connecting rod 18 so that the distance between the connecting points can be adjusted. Specifically, one end of the connecting rod 18 is pivotally attached to the end of the rotating arm 16 so as to be rotatable about an axis of rotation parallel to the rotation axis of the blanket cylinder, and the other end of the connecting rod 18 rotates the blanket cylinder. A screw coupling adjusting member 20 is rotatably restrained in the axial direction and attached to a piece member 19 inserted into the end of the swing arm 17 so as to be rotatable about a rotation axis parallel to the axis. As a result, the length between the connecting points of the connecting arm 11 and the swing arm 17, that is, the relative rotational phase can be adjusted by the rotating operation of the adjusting member 20.

A drive arm 21 is fixed to the protruding end of the rotary shaft 8 on the outer side of the frame, and the swing end of the drive arm 21 is pivotally attached to the piston rod end of the first pneumatic cylinder 22. Is attached to the frame by a blanket 23 so as to be swingable about a swing axis parallel to the rotation axis of the blanket cylinder.

A cam 24 is mounted near the rotary shaft fixing part of the drive arm 21,
A cam operation switching valve 25 is provided so as to perform a switching operation by engaging with a cam 24 that swings together with the drive arm 21.

A rotating arm 26 is also fixed to the end surface of the inner eccentric sleeve 6, while a swing arm 28 is swingably fitted to the fixed shaft 10 integrally with the gear 27. The gear 27 has a rotating shaft 9
The rotary arm 26 and the swing arm 28 swing at the ends of a connecting rod 30 having an intermediate adjusting screw coupling portion and having a freely adjustable length. It is attached, and the distance between the connecting points can be adjusted by rotating the intermediate adjusting screw connecting portion.

The swing direction variable drive arm 31 is fixed to the protruding end of the rotary shaft 9 on the outer side of the frame, and the swing direction variable drive arm 31 is attached.
The wide swing end of is attached to the piston rod end of the second pneumatic cylinder 32 so as to be rotatable by a mechanism as shown in FIG. That is, the wide swing end of the swing direction variable drive arm 31 is provided with a long groove hole 33 along the edge, and both ends of the moving screw rod 34 housed in the long groove hole 33 in the longitudinal direction are long grooves. The stoppers 35 and 35 'are provided so as to project through the fool holes at both ends of the hole 33, and the moving screw rod 34 is rotated by the rotation operation of the stopper 35. Then, a floating screw rod 34 is screwed into the moving piece 36 which is accommodated in the slot 33 with a clearance, and the piston rod end of the second pneumatic cylinder 32 is pivotally mounted. Therefore, the moving screw rod 34 can be moved in the axial direction and the axial vertical direction within a range permitted by the fool hole and the stopper, except when the moving piece 36 is in contact with both ends of the long groove hole 33.

Further, the second pneumatic cylinder 32 is attached to the outside of the frame by a blanket 37 so as to be swingable about a swing axis parallel to the rotation axis of the blanket cylinder. A cam 38 is mounted near the rotary shaft fixing portion of the swing direction variable drive arm 31,
A cam operation switching valve 39 is provided to perform a switching operation by engaging a cam 38 that swings with the swing direction variable drive arm 31.

As shown in FIGS. 2a to 2d, the operation control device for the first pneumatic cylinder 22 and the second pneumatic cylinder 32 includes a pneumatic operation switching valve 40, in addition to the cam operation switching valves 25 and 39 described above.
41, electromagnetic switching valves 42, 43, 44, 45, quick exhaust valves 46, 47, shuttle valve 48, and the like.

A rotating arm 49 is fixed to the end surface of the outer eccentric sleeve 7 of the additional printing cylinder A, and the end of the rotating arm 49 is pivotally attached to the frame.
Adjustable print adjustment valve 50 with intermediate adjustment screw connection
Is pivotally attached to the tip of. The journals of the plate cylinders P1 and P2 are also mounted on the frame via sleeves, but the sleeve of one plate cylinder P2 is an eccentric sleeve 51, and a rotary arm similar to the outer eccentric sleeve 7 of the additional printing cylinder A. 52 and printing pressure adjustment rod
It has 53.

Of the configurations described above, the same configuration is provided in both frames of the opposing frame, except for the member mounted on the outside of the frame and the operation control device for the pneumatic cylinder.

Operation of the cylinder switching device of the above-mentioned rotary printing press with additional cylinder
The operation will be described.

There are the following six positions in the mutual positions of the full plate cylinder / blanket cylinder and the additional printing cylinder, and the states of the sleeve actuating mechanism of each cylinder and its control device are shown in FIGS. 2 and 3. ing.

(A) First position (Fig. 3a) The first and second plate cylinders, the first and second blanket cylinders, and the additional printing cylinder are all separated.

(B) Second position (Fig. 3b (1)) The additional printing cylinder is only in contact with the first blanket cylinder, and the others are separated.

(B ') 2'position (Fig. 3b (2)) The additional printing cylinder is only in contact with the second blanket cylinder, and all others are separated.

(C) Third position (Fig. 3c) Each plate cylinder / blanket cylinder and both blanket cylinders are in contact with each other, and the additional printing cylinder is separated from both blanket cylinders.

(D) Fourth position, FIG. 3d (1)) The plate cylinders / blanket cylinders and the blanket cylinders are in contact with each other, and the additional printing cylinder is in contact only with the first blanket cylinder.

(D ') 4'position (Fig. 3d (2)) Each plate cylinder / blanket cylinder and both blanket cylinders are in contact with each other, and the additional printing cylinder is in contact only with the second blanket cylinder.

The first position is the neutral reference position, and the solenoids of all the solenoid operated directional control valves 42, 43, 44, 45 are demagnetized by the switch operation of the operation panel, and the pneumatic circuit is in the state shown in FIG. 2a. The piston rod of the cylinder 22 is in the protruding position, and the second pneumatic cylinder 32 is in the retracted position.

When threading, both blanket cylinders B1 through which the paper passes
・ B2 and one of the blanket cylinders B1 or B2 and the additional printing cylinder A may be separated from each other, but the space between the blanket cylinder and one additional printing cylinder is larger than the position shown in FIG. 3a. In order to do so, the additional printing cylinder A is displaced to a position where it comes into contact with the other blanket cylinder. That is, the second position or the second 'position is set.

As the operation, first, the stopper 35 of the floating screw rod 34 is
Is manually operated to rotate the floating screw rod 34 to bring the moving piece 36 into contact with one of the ends of the slot 33, and to fix it to the swing direction variable drive arm 31.

When the additional printing cylinder A is brought into contact with the blanket cylinder B1 and the space between the additional printing cylinder A and the blanket cylinder B2 is enlarged (3b
(1) (see FIG. 1) is brought into contact with the end on the stopper 35 side (upper end in FIG. 1). Then, when the additional printing cylinder A is brought into contact with the blanket cylinder B2 and the space between the additional printing cylinder A and the blanket cylinder B1 is enlarged (see FIG. 3b (2)), the end on the stopper 35 'side (A lower end in FIG. 1).

When the moving piece 36 is moved, the floating screw rod 34 can be moved to such an extent that the length of the piston rod of the second pneumatic cylinder 32 can be sufficiently absorbed.

The second or second 'through which the paper is threaded from the first position of the neutral reference position
To switch to the position, the solenoids of the solenoid operated directional control valves 42 and 45 remain demagnetized by the switch operation of the operation panel, the solenoids of the solenoid operated directional control valves 43 and 44 are energized, and the pneumatic circuit
2b, the piston rods of the first pneumatic cylinder 22 and the second pneumatic cylinder 32 are both in the projecting position.

In the case of FIG. 3b (1), the swing direction variable drive arm 31 is swung counterclockwise, the fan gear 29 rotates counterclockwise, the gear 27 and the swing arm 28 rotate clockwise, The inner eccentric sleeve 6 rotates counterclockwise through the counterclockwise rotation of the connecting rod 30 and the rotation arm 26. As a result, the additional printing cylinder A
The journal 5 of the blanket cylinder B1 approaches the journal 1 of the blanket cylinder B1 on the frame, and the additional printing cylinder A is the blanket cylinder.
It comes into contact with B1 and is further separated from the blanket cylinder B2. 3b
In the case of (2), the swing direction variable drive arm 31 is swung in the clockwise direction to rotate the sector gear 29 clockwise, the gear 27 and the swing arm 28 counterclockwise, and the connecting rod 30. Right row and rotating arm
Through the clockwise rotation of 26, the inner eccentric sleeve 6 rotates clockwise. As a result, the journal 5 of the additional printing cylinder A approaches the journal 2 of the bracket cylinder B2 on the frame, the additional printing cylinder A abuts the blanket cylinder B2, and is further separated from the blanket cylinder B1.

The cam 38 is displaced by the swinging of the swinging direction variable drive arm 31 in any direction, and even if the cam operation switching valve 39 is switched, the air supply / discharge pipe line to the first pneumatic cylinder 22 is not provided. Unaffected, the first pneumatic cylinder 22 remains inactive (see Figure 2b).

When double-sided monochromatic printing, so-called BB printing, is performed by passing the paper stock between the two blanket cylinders B1 and B2, the blanket cylinder B1 and the blanket cylinder B2 are brought into contact with each other with the paper stock interposed therebetween, and each blanket cylinder B1 , B2 are brought into contact with the respective plate cylinders P1, P2, and the additional printing cylinder A is located at a position separated from both blanket cylinders B1, B2. That is, the third position is set.

To switch from the neutral reference position 1st position to BB printing 3rd position, the solenoid control valve is operated by operating the switch on the operation panel.
The solenoids 42, 43, 44 remain demagnetized, and the solenoid switching valve 45
2 is energized, the pneumatic circuit enters the state shown in FIG. 2c, the piston rod of the second pneumatic cylinder 32 remains in the retracted position, and the first pneumatic cylinder 22 enters the retracted position.

Then, as shown in FIG. 3c, the drive arm 21 is rotated counterclockwise, and the rotation shaft 8 and the swing arm 17 are rotated counterclockwise.
Clockwise rotation of the connecting arm 11 via the connecting rod 18 and the connecting rod
The counterclockwise rotation of the connecting arm 12 via 13 causes the eccentric sleeve 3 to rotate clockwise and the eccentric sleeve 4 to rotate counterclockwise. As a result, the journals 1 and 2 of both blanket cylinders B1 and B2 are close to each other on the frame, and the blanket cylinders B1 and B2 are in contact with each other with the paper sheet passed in between, and The plate cylinders P1 and P2 also abut.

The cam 24 is displaced by the rotation of the drive arm 21 described above, and even if the cam operation switching valve 25 is switched, the air supply / discharge pipe line to the second pneumatic cylinder 32 is not affected, and the second pneumatic cylinder 32 is not affected.
Remains inactive (see Figure 2c). Therefore, the inner eccentric sleeve 6 of the additional printing cylinder A does not rotate and remains in the same position as the first position (see FIG. 3a), and the additional printing cylinder A
Journal 5 is on the frame, both blanket cylinders B1,
Separated from B2 journals 1 and 2. That is, the additional printing cylinder A is separated from both blanket cylinders B1 and B2.

When one color is additionally printed on one side of double-sided monochromatic printing, the blanket cylinder B1 and the blanket cylinder B2 are brought into contact with each other with the paper sandwiched therebetween, and the blanket cylinders B1 and B2 are respectively connected to the plate cylinders P1 and P2. The additional printing cylinder A is brought into contact with either of the blanket cylinders B1 and B2. That is, the fourth position or the fourth position is set.

In this case, the selection operation / operation of the blanket cylinder with which the additional printing cylinder A abuts is exactly the same as in the case of the second position and the second 'position.

After the selection operation / operation, in order to switch from the first position of the neutral reference position to the fourth or 4'position of the one-color additional printing,
By operating the switches on the operation panel, the solenoids of the solenoid operated directional control valves 43, 44, 45 remain demagnetized and the solenoid of the solenoid operated directional control valve 42 is excited. Here, the pneumatic circuit is
As shown in the figure, the shuttle valve 48 is switched by switching the electromagnetic switching valve 42, the pneumatic operation switching valve 40 is switched by pneumatic pressure, and the piston rod of the first pneumatic cylinder 22 is in the retracted position.

Then, an operation similar to the above-mentioned switching to the third position is performed, and as a result, both blanket cylinders are moved in the same manner as the third position.
The journals 1 and 2 of B1 and B2 are close to each other on the frame, and the blanket cylinder B1 and the blanket cylinder B2 are in contact with each other with the paper sheet passed in between, and the respective plate cylinders P1 and P2.
Also abut.

That is, as the first step, the switching operation is performed so that the mutual positions of the cylinders become the third position.

At this time, the cam 24 is displaced by the rotation of the drive arm 21, and the cam operation switching valve 25 is switched. When the cam operation switching valve 25 is switched to the electromagnetic switching valve 42, the pneumatic operation switching valve 41 is switched, and the piston rod of the second pneumatic cylinder 32 is in the protruding position.

At this time, the additional printing cylinder A is operated in the same manner as when switching between the second position and the second position.

That is, in the second step, the switching operation is performed so that the mutual positions of the additional printing cylinders A become the second position and the second position.

During the second stage operation, even if the cam 38 is displaced due to the swing of the swing direction variable drive arm 31 and the cam operation switching valve 39 is switched, the air supply / discharge pipe line to the first pneumatic cylinder 22 is provided. The fact that there is no effect on is similar to the case of switching to the second position and the second position.

As a result, as shown in FIG. 3d (1) or 3d (2), the blanket cylinder B1 and the blanket cylinder B2 are in contact with each other while sandwiching the paper stock, and also in contact with the respective plate cylinders P1 and P2, Further, the additional printing cylinder A contacts either one of the blanket cylinders B1 and B2.

The adjustment of the contact pressure of each cylinder in the above-mentioned cylinder contact / separation is performed by the connecting rods 13, 18, 30 or the printing pressure adjusting rod 50 by adjusting rotation of the screw connecting portion of each connecting rod / printing pressure adjusting rod, respectively. By adjusting the length between the connection points of 53, each eccentric sleeve is slightly rotated, and the distance between the rotation axes of the journals of the cylinders is adjusted.

The combination of the cam operation switching valve and the pneumatic operation switching valve, which are switched by the operation of the pneumatic cylinder in the above embodiment, may be changed to a pneumatic circuit in which a limit switch and a solenoid valve are combined.

Further, in the above embodiment, the automatic control device by the pneumatic circuit provided with each valve is used, but without using it, both pneumatic cylinders can be operated manually in the order of operation by the automatic control device. Good.

Further, although air is used as the working pressure fluid in the above embodiment, it may be changed to a hydraulic cylinder / hydraulic circuit (hydraulic cylinder / hydraulic circuit) using a fluid such as oil.

[Effects of the Invention] According to the cylinder switching device in the rotary printing press with the additional printing cylinder according to the present invention, when the additional printing cylinder is not used during the operation of the rotary printing machine, between each plate cylinder / blanket cylinder and both Since the blanket cylinders are brought into contact with each other and the additional printing cylinders are separated from both blanket cylinders, only the additional printing cylinders are stopped, so that the consumption of the components is reduced and the vibration of the rotary printing machine as a whole is reduced. Can feel.

Further, in the paper threading operation, all the cylinders other than the additional printing cylinder are separated from each other, and only the additional printing cylinder is brought into contact with one blanket by driving the second displacement driving device that displaces the additional printing cylinder, and the other Since it is displaced further away from the blanket, a sufficient distance can be secured between the additional printing cylinder and the other blanket cylinder.

Therefore, even if the raw paper has a slight waviness, it rarely comes into contact with the additional printing cylinder.

In addition, each cylinder of the rotary printing press can be placed in various contact and separation states including the movement of the additional printing cylinder as described above, and the operation can be easily performed.

[Brief description of drawings]

FIG. 1 is a front view of the inside of a frame of a cylinder switching device in an offset rotary printing press with additional printing cylinder according to the present invention, and FIGS. 2a to 2d are drawings of a cylinder switching device in an offset rotary press with additional printing cylinder according to the present invention. Pneumatic circuit diagram, FIGS. 3a to 3d (2) are explanatory views of the operating state of the cylinder switching device in the offset printing rotary press with additional printing cylinder according to the present invention. FIG. 4 is the offset rotary printing with additional printing cylinder according to the present invention. FIG. 5 is an enlarged partial view of the swinging direction variable drive arm in FIG. 1 in the frame of each body contact pressure adjusting device of the machine. P1: 1st plate cylinder, P2: 2nd plate cylinder A: Additional printing cylinder, B1: 1st blanket cylinder B2: 2nd blanket cylinder 1,2,5: Journal, 3,4,51: Eccentric sleeve 6: Inside Eccentric sleeve, 7: Outer eccentric sleeve 8,9: Rotating shaft, 10: Fixed shaft 11,12: Connecting arm, 13,18,30: Connecting rod 14,15,19: Piece member, 16,26,49,52 : Rotating arm 17,28: Swing arm, 20: Adjusting member 21: Drive arm, 22: First pneumatic cylinder 23,37: Bracket, 24,38: Cam 25,39: Cam operation switching valve 27: Gear, 29: Fan-shaped gear 31: Oscillating direction variable drive arm 32: Second pneumatic cylinder 33: Long groove hole, 34: Floating screw rod 35, 35 ': Stopper, 36: Moving piece 40, 41: Pneumatic operation switching valve 42, 43 , 44,45: Solenoid switching valve 46,47: Rapid exhaust valve, 48: Shuttle valve 50,53: Printing pressure adjusting rod

Claims (5)

[Claims] 1. A blanket cylinder having two plate cylinders cooperating with each other and arranged so as to be able to come into contact with and separate from each other so as to be able to come into contact with and separate from either of the two blanket cylinders. In a rotary printing press with an additional printing cylinder provided with an additional printing cylinder provided in the vicinity of the blanket cylinders, the two blanket cylinders are arranged so as to be displaced, and each blanket cylinder is brought into contact with or separated from a corresponding plate cylinder. In addition, the first displacement driving device for contacting and separating both blanket cylinders and the additional printing cylinder provided for displacing the additional printing cylinder are brought into contact with and separated from either one of the blanket cylinders in the contacting and separating states. Cylinder switching device including second displacement drive device 2. A first displacement driving device rotatably mounting journals of respective blanket cylinders and eccentric sleeves supported by the frame, and rotationally driving the eccentric sleeve with respect to the frame via a link mechanism. A second displacement driving device includes a link mechanism including an eccentric sleeve supported by a frame and a eccentric sleeve rotation direction changing link, in which a journal of an additional printing cylinder is rotatably mounted. The cylinder switching device according to claim 1, further comprising: a second fluid pressure cylinder that rotationally drives the eccentric sleeve with respect to the frame. 3. Two blanket cylinders arranged side by side so as to be able to be displaced toward and away from each other, respectively, with plate cylinders cooperating with each other, and to be displaced toward and away from either of the blanket cylinders. In a rotary printing machine with an additional printing cylinder having additional printing cylinders juxtaposed to the blanket cylinders, the two blanket cylinders are provided so as to be displaced, and each blanket cylinder is connected to its corresponding plate cylinder. A first displacement driving device that moves the blanket cylinders apart from each other and separates the additional printing cylinder from the first displacement driving device that moves the additional printing cylinders toward and away from each other. A second displacement driving device, a first displacement driving device, and a second
Cylinder switching device provided with sequence operation control device of displacement drive device 4. A first displacement driving device for rotatably mounting journals of respective blanket cylinders and eccentric sleeves supported by the frame, and rotationally driving the eccentric sleeve with respect to the frame via a link mechanism. A second displacement driving device includes a link mechanism including an eccentric sleeve supported by a frame and a eccentric sleeve rotation direction changing link, in which a journal of an additional printing cylinder is rotatably mounted. The cylinder switching device according to claim 3, further comprising a second fluid pressure cylinder that rotationally drives the eccentric sleeve with respect to the frame via the second fluid pressure cylinder. 5. The sequence operation control device for the first fluid pressure cylinder and the second fluid pressure cylinder is a fluid pressure circuit whose circuit is switched by the operation of the first fluid pressure cylinder and the second fluid pressure cylinder. Body switching device according to item 4