JPH0742736Y2 - Ink and water roller group drive stop device for sheet-fed offset printing machines - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a drive stopping device for ink and water rollers in a sheet-fed offset duplex printing machine and a multicolor printing machine.

[Prior Art] For example, in four-color printing, it is most efficient to drive all units (four-color units) at the same time for four-color printing, but depending on the type of printing, four-color printing is performed. It is often the case that two-color printing or three-color printing is performed depending on the machine, but in this case, some units are not used.

In the conventional multi-color printing machine, the ink and water roller group of the inking unit, which is not used without any change in mechanism with respect to the unit used, rotates and shakes sideways.

[Problems to be solved by the device]

In the conventional multi-color printing machine, the unused unit is driven in the same way as the unit that is used.Therefore, not only is the ink, the life of the water roller, the load on the machine wasted, but also the unused unit is not used. For the king unit, it is necessary to remove all ink, water roller, etc., or take roller protection measures such as applying lubricating oil between rollers to prevent peeling of the rubber on the surface of the rollers due to friction. If such measures are taken, the rollers must be set or the rollers must be washed before they can be used again, and the work is extremely troublesome, and not only labor and time are required, but also immediate printing. There is a problem that you cannot do it.

Therefore, in the present invention, it is possible to easily and surely select the execution or stop of the printing operation by a simple mechanism. For example, the printing operation is stopped only for the units that are not used in the multicolor printing machine to prevent the lateral swing roller from being deteriorated. Ink and water roller group drive stop in a sheet-fed offset printing machine that can easily and reliably swing or stop the lateral swing roller with a simple mechanism that suppresses and reduces the load on the machine. The purpose is to provide a device.

[Means for solving the problem]

In the sheet-fed offset printing press according to the present invention, the drive stopping device for the ink and water rollers is a plate cylinder fixed and supported by the plate cylinder, a gear holder that rotates in conjunction with the plate cylinder and the plate cylinder axis, and a gear holder. A drive gear located in the vicinity of the drive gear, a horizontal swing roller group connected to the drive gear, and a horizontal swing roller group that supplies water and / or ink to the plate cylinder by rotationally driving, a gear holder and a drive. By moving in the direction almost the same as the rotation axis direction of the gear, the frictional resistance between the side surface of the gear holder and the side surface of the drive gear is increased to couple the gear holder and the drive gear, or the side surface of the gear holder is driven. A first pressurizing member that lowers the frictional resistance with the side surface of the gear and separates the gear holder and the drive gear, an eccentric plate pool that rotates in conjunction with the plate cylinder and the plate cylinder shaft. -, An eccentric plate located close to the eccentric plate pulley, a link mechanism that is connected to the eccentric plate and swings the swing roller in the axial direction according to the rotation of the eccentric plate, the eccentric plate pulley and the eccentric plate rotation By moving in the same direction as the axial direction, the friction resistance between the side surface of the eccentric plate pulley and the side surface of the eccentric plate is increased to connect the eccentric plate pulley and the eccentric plate, or the side surface of the eccentric plate pulley and the eccentric plate are eccentric. A second pressure member that reduces frictional resistance with the side surface of the plate and separates the eccentric plate pulley and the eccentric plate from each other.

[Action]

In the drive stop device for the ink and water roller groups in the sheet-fed offset printing press according to the present invention, the first pressure member moves in the direction substantially the same as the rotation axis direction of the gear holder and the drive gear. The movement of the first pressure member increases the frictional resistance between the side surface of the gear holder and the side surface of the drive gear, and connects the gear holder and the drive gear. Further, the movement of the first pressing member reduces the frictional resistance between the side surface of the gear holder and the side surface of the drive gear, and separates the gear holder and the drive gear.

In this way, by increasing the frictional resistance between the gear holder and the drive gear by moving the first pressure member and connecting the two,
The rotation of the plate cylinder is transmitted to the lateral swing roller group via a gear holder and a drive gear, and water or ink or both are supplied to the plate cylinder. Further, the movement of the first pressure member reduces the frictional resistance between the gear holder and the drive gear, and when the both are released and released, the rotation of the lateral swing roller group can be stopped.

Further, in the drive stop device for the ink and water roller groups in the sheet-fed offset printing press according to the present invention, the second pressure member moves in a direction substantially the same as the rotation axis direction of the eccentric plate pulley and the eccentric plate. . The movement of the second pressure member increases the frictional resistance between the side surface of the eccentric plate pulley and the side surface of the eccentric plate, and connects the eccentric plate pulley and the eccentric plate. Further, the movement of the second pressure member reduces the frictional resistance between the side surface of the eccentric plate pulley and the side surface of the eccentric plate, and separates the eccentric plate pulley and the eccentric plate.

Thus, by increasing the frictional resistance between the eccentric plate pulley and the eccentric plate by the movement of the second pressure member and connecting the two,
The rotation of the plate cylinder is transmitted to the oscillating roller via the eccentric plate pulley, the eccentric plate, and the link mechanism, and the oscillating roller oscillates in the axial direction. Further, the frictional resistance between the eccentric plate pulley and the eccentric plate is reduced by the movement of the second pressure member, and if the both are released and released, the swinging of the oscillating roller in the axial direction is stopped. You can

〔Example〕

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

FIG. 5 is a schematic side view of a double-sided printing machine embodying the present invention. As shown, a first unit 1 for surface printing,
Second unit 2 and third unit 3 for backside printing
The paper supply unit 4, the paper discharge unit 5, and the paper discharge table 6 are provided, and the drive stop device for the ink and water roller groups of the present invention is implemented in the third unit 3. Cross-sections of the roller group drive mechanism of the third unit 3 are shown in FIGS. 1 and 2, respectively, and FIGS. 3 and 4 are a front view of the operation side and a front view of the opposite side of the roller group drive mechanism. Is.

Since the roller group is driven to rotate and laterally swing (reciprocating motion in the axial direction), the ink and water roller groups are driven by completely stopping the two types of drive systems to cut off power transmission. The stop is performed.

First, the mechanism for rotationally driving the roller group is configured as follows.

As shown in FIGS. 1 to 5, a printing cylinder 8 (hereinafter referred to as a “plate cylinder”) is fixed to a plate cylinder shaft 9 and a frame on the operating side.
A plate cylinder gear that is rotatably mounted on a frame 11 on the counter operation side and a frame 11 on the counter operation side, and is fixed to the plate cylinder shaft 9 on the counter operation side.
The plate cylinder 8 is provided so as to be rotationally driven by the drive source 7 via 14 for normal double-sided printing or when the third unit 3 is not used.

Further, a gear holder 15 is fixed to the operation-side end of the plate cylinder shaft 9 with bolts 16 ...
A drive gear 18 for rotating the ink swaying roller is rotatably supported on the plate cylinder shaft 9 by interposing a bearing 17 on the outer surface of the plate cylinder 9 in a state in which axial movement is blocked.

That is, by fitting the inner rail 17a of the bearing 17 to the cylindrical portion 15a and the outer rail 17b to the drive gear 18, the drive gear 18 can be freely moved with respect to the plate cylinder shaft 9 and the gear holder 15. It is supported on the plate cylinder shaft 9 for rotation.

The flange portion 15b of the gear holder 15 is connected to the drive gear 18
A bolt 19 as a first pressure member is slidably inserted from the outside into a bolt insertion hole 18b that is slidably superposed on the outer side surface 18a of the drive gear 18 and axially penetrates the drive gear 18. The bolt 19 is supported by the drive gear 18 so that the bolt 19 can be screwed forward and backward by screwing the washer 20 into the screw hole 19a provided at the center of the tip on the rear surface of the drive gear 18 so as to non-rotatably overlap. There is.

The bolt 19 is provided with a holding metal fitting 22 between the head portion 19b and the flange portion 15b of the gear holder 15 so that the bolt 19 makes contact between the holding metal fitting 22 and the flange portion 15b of the gear holder 15. Part a and gear holder 1
The drive gear 18 is integrally coupled to the gear holder 15 by frictional resistance generated at the contact portion b between the flange portion 15b of 5 and the surface of the drive gear 18, and by loosening the bolt 19, the contact portion a, The frictional resistance of b is removed, and the drive gear 18 is set in a free state with respect to the gear holder 15 so that the power transmission between them is blocked.

Further, idle gears 23 ... Are meshed with the drive gear 18, and the idle gears 23 ...
The roller gears 25 fixed to are meshed with each other, so that the ink / water horizontal shaking rollers 26 are rotationally driven so as to be drivingly connected.

As shown in FIG. 2, the idle gears 23 ... are rotatably supported by shafts 27 ... 26 ... Are erected by a roller shaft 24 penetrating the operation side frame 10 and the counter operation side frame 11 through bearings 29, 29 so as to be rotatable and slidable in the axial direction. A roller gear 25 fixed to the end portion on the operation side is meshed with an upper idle gear 23 so as to be slidable in the axial direction.

On the other hand, the mechanism for laterally driving the roller group is configured as follows.

A pulley 30 for driving the ink swaying roller is fixed to the end of the plate cylinder shaft 9 on the side opposite to the operation side, and the rotational force of the pulley 30 is connected to the eccentric plate pulley 32 by a timing belt 31. Has been done.

The eccentric plate pulley 32 is rotatably supported by a cylindrical support member 33 fixed to the counter-operation side frame 11 via a bearing 34, and is prevented from moving in the axial direction by bolts 35, stoppers 36 and the like. It is rotatably supported on the rotating shaft 37 by means of a bearing 38 while being prevented from moving in the axial direction.

That is, the inner race 38a of the bearing 38 is attached to the rotary shaft 3
The outer race 38b is fitted to the eccentric plate pulley 32 so that the eccentric plate pulley 32 can rotate with respect to the rotating shaft 37.

An eccentric plate 39 is fixed to the outer end surface of the rotary shaft 37 by bolts 40, and its flange portion 39a is superposed on the outer surface of the eccentric plate pulley 32.

Further, a bolt 41 as a second pressure member is inserted from the outside into a bolt insertion hole 32a penetrating the peripheral portion of the eccentric plate pulley 32, and a washer 42 is inserted into a screw hole 41a formed in the tip end surface of the bolt 41. Is bolted to the side surface of the eccentric plate pulley 32 in a non-rotationally overlapping manner, and the bolt 43 is screwed into the side face of the eccentric plate pulley 32.

On the bolt 41, a retainer fitting 44 is provided on the bolt head 41b and the eccentric plate 3
It is installed so as to be interposed between the bolt 9 and
By tightening 1, the frictional resistance is generated in the contact portion c between the eccentric plate pulley 32 and the eccentric plate 39 and the contact portion d between the eccentric plate 39 and the holding metal fitting 44, whereby the eccentric plate pulley 32 and the eccentric plate 39 are integrated. The eccentric plate pulley 32 and the eccentric plate 39 are formed in a free state by removing the frictional resistance of the contact portions c and d by coupling and loosening the bolt 41.

That is, the power transmission between the eccentric plate pulley 32 and the eccentric plate 39 can be switched between continuous and disconnected by tightening and loosening the bolts 41.

Further, the rotational movement of the eccentric plate 39 causes the eccentric shaft 39 of the eccentric plate 39 to move.
Each swinging arm whose one end is fixed to the arm shaft 47 is transmitted as swinging motion to the swinging arm 46 pivotally provided on the counter operation side frame 11 through the rod 45 whose one end is rotatably connected to b. Rollers 49, 49 axially supported at the tips of 48, 48,
The lateral swing roller shafts 24, 24 are engaged with the roller receivers 50, 50 at the end portions thereof, whereby the linear movement of the rod 45 is performed by the arm 4
The roller shafts 24, 24 are formed so as to alternately drive the roller shafts 24, 24 in the axial direction alternately through the shafts 6, 48, 48 in the opposite directions.

The other swing roller 26 ... is also the above swing roller shaft.
The same mechanism as described above is interlocked so as to be driven to laterally swing alternately through 24 and other lateral swing arms 48 ....
Therefore, the power cutoff between the eccentric plate pulley 32 and the eccentric plate 39,
By the continuation, each lateral swing roller 26 ... Stops lateral swing or starts lateral swing.

In the drive stop device for the ink and water roller groups in the sheet-fed offset printing press according to the present invention, the first pressure member moves in the direction substantially the same as the rotation axis direction of the gear holder and the drive gear. The movement of the first pressure member increases the frictional resistance between the side surface of the gear holder and the side surface of the drive gear, and connects the gear holder and the drive gear. Further, the movement of the first pressing member reduces the frictional resistance between the side surface of the gear holder and the side surface of the drive gear, and separates the gear holder and the drive gear.

In this way, by increasing the frictional resistance between the gear holder and the drive gear by moving the first pressure member and connecting the two,
The rotation of the plate cylinder is transmitted to the lateral swing roller group via a gear holder and a drive gear, and water or ink or both are supplied to the plate cylinder. Further, the movement of the first pressure member reduces the frictional resistance between the gear holder and the drive gear, and when the both are released and released, the rotation of the lateral swing roller group can be stopped.

That is, it is possible to freely rotate or stop the lateral swing roller group by moving the first pressure member. Therefore, it is possible to easily and surely select the execution or the stop of the printing operation based on the plate cylinder with a simple mechanism, and it is possible to suppress the deterioration of the oscillating roller and reduce the load on the machine.

Further, in the drive stop device for the ink and water roller groups in the sheet-fed offset printing press according to the present invention, the second pressure member moves in a direction substantially the same as the rotation axis direction of the eccentric plate pulley and the eccentric plate. . The movement of the second pressure member increases the frictional resistance between the side surface of the eccentric plate pulley and the side surface of the eccentric plate, and connects the eccentric plate pulley and the eccentric plate. Further, the movement of the second pressure member reduces the frictional resistance between the side surface of the eccentric plate pulley and the side surface of the eccentric plate, and separates the eccentric plate pulley and the eccentric plate.

Thus, by increasing the frictional resistance between the eccentric plate pulley and the eccentric plate by the movement of the second pressure member and connecting the two,
The rotation of the plate cylinder is transmitted to the oscillating roller via the eccentric plate pulley, the eccentric plate, and the link mechanism, and the oscillating roller oscillates in the axial direction. Further, the frictional resistance between the eccentric plate pulley and the eccentric plate is reduced by the movement of the second pressure member, and if the both are released and released, the swinging of the oscillating roller in the axial direction is stopped. You can

That is, by moving the second pressure member, it is possible to freely swing or swing the lateral swing roller in the axial direction. Therefore, it is possible to easily and reliably swing or stop the lateral swing roller with respect to the plate cylinder in the axial direction with a simple mechanism.

[Brief description of drawings]

1 and 2 are vertical cross-sectional views of a roller group drive mechanism of an inking unit showing an embodiment of an ink and water roller group drive stopping apparatus in a sheet-fed offset printing machine according to the present invention, respectively. Is a front view of the operating side of the inking unit, FIG. 4 is a front view of the non-operating side of the inking unit, and FIG. 5 is a schematic side view of a double-sided printing machine showing an embodiment of the present invention. . 7 ... Drive source, 8 ... Printing cylinder (plate cylinder), 9 ... Printing cylinder shaft (plate cylinder shaft) 10,11 ... Frame, 14 ... Printing cylinder gear (plate cylinder gear), 1
5 …… Gear holder 17, 38 …… Bearing, 18 …… Drive gear 19,41 …… Bolt, 22,44 …… Holder plate 23 …… Idle gear, 26 …… Ink / water horizontal roller 30 …… Drive Pulley, 31 …… Timing belt 32 …… Eccentric plate Pulley, 37 …… Rotary shaft 39 …… Eccentric plate, 45 …… Rod

Claims (1)

[Scope of utility model registration request] 1. A plate cylinder fixed to and supported by a plate cylinder shaft, a gear holder that rotates in conjunction with the plate cylinder and the plate cylinder shaft, a drive gear positioned in the vicinity of the gear holder, and a lateral plate connected to the drive gear. A group of swing rollers, which supplies water and / or ink to the plate cylinder by being driven to rotate, and moves in a direction substantially the same as the rotation axis direction of the gear holder and the drive gear. , Increase the frictional resistance between the side of the gear holder and the side of the drive gear to combine the gear holder and the drive gear, or reduce the frictional resistance between the side of the gear holder and the side of the drive gear to reduce the frictional resistance between the side of the gear holder and the drive gear. Is connected to an eccentric plate, an eccentric pulley that rotates in conjunction with the plate cylinder and the plate cylinder shaft, an eccentric plate that is located close to the eccentric plate pulley, , A link mechanism that swings the oscillating roller in the axial direction according to the rotation of the eccentric plate, and an eccentric plate pulley and the side surface of the eccentric plate pulley that is eccentric to the eccentric plate pulley by moving in the same direction as the eccentric plate rotation axis direction. Increase the frictional resistance with the side surface of the plate to connect the eccentric plate pulley and the eccentric plate, or reduce the frictional resistance between the side surface of the eccentric plate pulley and the side surface of the eccentric plate to separate the eccentric plate pulley and the eccentric plate. A drive stopping device for ink and water rollers in a sheet-fed offset printing press including a second pressure member.