JPH0970950A - Drive device of printing press - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the efficiency of washing work and to shorten a working time. SOLUTION: A water supply gear 35 constituting a gear train 38 for driving a water supply device and an inker gear 36 constituting a gear train 46 for driving an inking arrangement are together meshed with a gear 34 for connecting a main machine. A plate cylinder gear 30 is rotationally driven by a first motor and a rotation transmission means. A clutch 31 is interposed between the plate cylinder gear 30 and the gear 34 for connecting the main machine and the water supply gear 35 and the inker gear 36 can be driven by a second motor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driving device for a printing press that rotationally drives a roller row that constitutes an inking device and a water supply device.

[0002]

2. Description of the Related Art In an offset printing machine or the like, ink and dampening water (hereinafter referred to as "water") are supplied to the surface of a plate mounted on a plate cylinder to form an image. Printing is performed by transferring this image to paper directly or through a blanket cylinder. The inking device is composed of an ink fountain that stores ink, a fountain roller that rotates in the ink fountain, and a large number of roller groups that are arranged between the fountain roller and the plate cylinder. The ink that has been pulled up from the ink fountain and adhered to the surface thereof is leveled in each direction by transferring the roller group, and is supplied to the plate surface by a plurality of inking rollers as the final roller of the roller group. In addition, the water supply device includes a water boat, a water source roller that rotates in the water boat, and a group of rollers disposed between the water source roller and the plate cylinder. The water adhering to the surface is metered and leveled during the transfer between the roller groups, and is supplied to the plate surface by a swimsuit roller as the final roller of the roller group.

The rollers of the inking device and the water supply device are rotationally driven by the rotation of the driving motor on the driving side for rotating the plate cylinder being transmitted through the gears of the roller group that mesh with the gears of the plate cylinder. ing. In the printing machine configured as described above, in order to shorten the ink cleaning time associated with the color change, or to enable the cleaning of the plate cylinder and the cleaning of the roller group of the inking device at the same time, JP-A-63-63
No. 315244, a clutch is provided between the gear of the roller group of the inking device and the gear of the plate cylinder, and another drive motor for independently driving the roller group of the inking device is provided. There is. Then, during cleaning, the rotation of the drive motor on the driving side is blocked by a clutch so that the rotation of the drive motor on the driving side is not transmitted to the roller group of the inking device. It is possible to wash at the same time by changing the rotation speed of.

[0004]

However, in the above-mentioned conventional printing machine, since the gears of the roller group of the water supply device and the gears of the plate cylinder are directly connected to each other, the inking device and If it is attempted to wash the water supply device and the water supply device at the same time, in order to rotate the roller group of the water supply device, it is necessary to rotate the plate cylinder that does not need to be cleaned, which requires extra preparation time. Also, in order to simplify the mechanism,
In the case of a structure in which the mechanism that swings the swing roller of the inking device and the water supply device is shared, the rotation of the drive motor on the driving side is stopped and the rotation of the plate cylinder is stopped when cleaning only the inking device. Then, the rotation of the roller group of the water supply device also stops, so that a slip occurs at the contact surface of the swing roller of the water supply device with the water supply contact roller that is in contact, and the surface is damaged. In order to prevent this, when cleaning the inking device alone, it is necessary to remove the water supply roller once, and this causes a problem that the work is inefficient and the work time is extra.

Therefore, the present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to improve the efficiency of the cleaning work and reduce the working time of the printing machine. To provide.

[0006]

In order to achieve this object, a drive unit for a printing press according to the present invention comprises a first prime mover for rotating a plate cylinder and an inking unit for transmitting rotation to an inking unit. In a printing machine provided with a rotation transmission means and a rotation transmission means of a water supply device for transmitting rotation to a water supply device, the connection between the first prime mover and the rotation transmission means of the inking device and the water supply device is connected and disconnected. A clutch and a second prime mover for driving the rotation transmitting means of the inking device and the water supply device are provided. When the inking device alone or the inking device and the water supply device are simultaneously washed, the first clutch is used.
The drive of the motor is cut off, and the inking device and the water supply device are driven by the second motor. Further, the driving device of the printing machine according to the present invention connects the shaking roller of the inking device and the shaking roller of the water supplying device by the shaking mechanism so that the second prime mover shakes the water supplying device even when washing by the inking device alone. The roller is also driven to rotate. Here, the first prime mover is
For example, it refers to a motor that drives all printing press units via a line shaft, and the second prime mover refers to a motor that drives independently of the first prime mover.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an arrangement view of gears in a driving device for a printing machine according to the present invention, FIG. 2 is a front view of the same development, and FIG. 3 is a side view. In these figures, a printing unit 1 of a printing machine is provided with a plate cylinder 3 which is pivotally supported by left and right frames 2 and 2 and rotates, and a printing plate is mounted on its peripheral surface. On the surface of the plate cylinder 3, a pair of swing rollers 4a and 4b that rotate as shown in the figure.
A pair of inking rollers 5 each supported by an arm is detachably contacted with each other. Further, three kneading rollers 6 are arranged above the shaking rollers 4a and 4b so as to face each other. It is provided in contact with each other.

Further, the rider roller 7 is mounted on one of the kneading rollers 6, and the other one is mounted on the other one.
The swing roller 8 is in contact. An inking device 10 is composed of the roller group thus arranged and the ink supply device 9 described later. That is, the ink supply device 9 is provided with an ink fountain roller 11 as an original roller that intermittently rotates at a low speed, and an ink fountain 14 is formed by the peripheral surface of the ink fountain roller 12 and a pair of left and right ink dams 13. And, in the intermediate portion between the ink fountain roller 11 and the swing roller 8,
The swing roller 15 is axially supported so as to be movable in the axial direction.

Reference numeral 17 denotes an ink fountain roller 11 and a swing roller 1.
5 is a transfer roller that reciprocates between the rollers 11 and 15 while alternately contacting the roller 5. Two rider rollers 18 and 19 are placed on the swing roller 15, and the rider roller 20 is placed between the swing roller 15 and the swing roller 8.
A kneading roller 21 provided with is provided with the peripheral surfaces facing each other. On the other hand, on the side of the plate cylinder 3, a water source roller 22 that rotates in the water boat 21, a swing roller 23, a transfer roller 24 that reciprocates between these two rollers 22, 23, and an arm for the swing roller 23. There is provided a water supply device 27 which comprises a pair of swimsuit rollers 25, 26 supported by the pair of swimsuit rollers 25, 26 and facing each other. Reference numeral 28 denotes a bridge roller that is in contact with the inking roller 5 and the swimsuit roller 25 that are close to each other, and emulsifies ink and water to improve printing conditions, or as described later, a roller of the inking device 10 after printing. It is also used for simultaneously cleaning the group and cleaning the roller group of the water supply device 27.

Reference numeral 30 denotes a plate cylinder gear which is axially attached to the shaft end of the plate cylinder 3 and is rotationally driven by a prime mover and a rotation transmission means (not shown). Reference numeral 31 denotes a clutch gear 32 that meshes with the plate cylinder gear 30 and a clutch gear 3 that meshes with the machine connecting gear 34.
3 is coaxially mounted, and meshing teeth are formed on both side surfaces of both clutch gears 32 and 33 that are in contact with each other, and the engagement and disengagement of these meshing teeth is performed by an on / off operation of an air cylinder (not shown). It is a mesh type clutch that performs. The clutch 31 operates an air cylinder, moves the clutch gear 33 in the direction A, and separates the meshing teeth from the clutch gear 32, so that the rotation of the plate cylinder gear 30 is blocked and the gear 34 for connecting to the machine is connected. It is configured not to be transmitted.

In the gear 34 for connecting the main unit, a water supply gear 35 of the water supply device 27 having a large tooth width and a leading inker gear 36 closest to the most upstream side of the gear train of the inking device 10, that is, the drive source side are provided. I'm in mesh. The water supply gear 35 is the gear closest to the most upstream side, that is, the drive source side in the gear train of the water supply device 27. Reference numeral 37 denotes a swing roller gear axially attached to the shaft end of the swing roller 23 of the water supply device 27, which meshes with the leading water supply gear 35, and constitutes a water supply device drive gear train 38 for driving the water supply device 27 together with the water supply gear 35. are doing.

Reference numeral 40 denotes a swing roller gear which is axially attached to the shaft end portion of the swing roller 8 of the inking device 10, and meshes with the inker gear 36. Reference numeral 41 denotes an intermediate gear having a thick tooth width that meshes with the swing roller gear 40. The intermediate gear 41 includes swing roller gears 42 and 43 axially attached to shaft end portions of the swing rollers 15 and 4b of the inking device 10. One of the two transmission gears 45 meshes. The other one of the two transmission gears is meshed with the swing roller gear 44 axially attached to the shaft end of the swing roller 4a. These inker gear 36, swing roller gears 40, 42, 43, 44,
The intermediate gear 41 and the transmission gear 45 form an inking device drive gear train 46 that drives the inking device 10.

Further, in the present invention, another drive means 47 having a clutch mechanism is provided between the water supply gear 35 and the inker gear 36. That is, the driving means 47 is composed of a motor 48 that functions as a second prime mover attached to the frame 2 and a clutch gear 49 that is fixed to the motor shaft of the motor 48, and turns on the electromagnetic solenoid built in the motor 48. , OFF, the motor shaft has a structure capable of switching movement in the CD direction. When the motor shaft is in the D direction indicated by the solid line in FIG. 2, the clutch gear 49 causes the water supply gear 35 to move.
Also, when the clutch gear 49 meshes with the inker gear 36 and moves in the C direction, the meshing of the clutch gear 49 with the water supply gear 35 and the inker gear 36 is released.

The swing rollers 15, 8 and 23 have their respective shafts 54, 56 and 60 rotatably and axially movably supported by bearings (not shown) of the frame 2, and are supported by a common swing mechanism 50. It is connected. That is,
Reference numeral 51 denotes a swing lever for driving, which is a rotation transmission shaft 52 rotatably supported by the frame 2 and the bracket 52a.
The central portion is rotatably fitted to the swing shaft having a tilted shaft core at the protruding end thereof, with its central portion prevented from coming off in the axial direction. Both ends of the swing lever 51 are engaged with the tip ends of the shaft 54 and the shaft 56 while being prevented from slipping off in the axial direction. Reference numeral 53 is a gear that is attached to the rotation transmission shaft 52.
A gear 55 having a large tooth width is axially engaged with the shaft 54 of the swing roller 15. Grooves 57 and 61 are attached to the tip ends of the shafts 56 and 60, and the groove 57 and 61 are pivotally attached to a column 59 erected on the frame 2 such that the central portion thereof is swingable. Rollers pivotally attached to both ends of the rocking lever 58 are engaged.

Next, the operation of the driving device of the printing press thus configured will be described. First, the printing operation will be described. In this case, the air cylinder of the clutch 31 (not shown)
Is operated to move the clutch gear 33 in the B direction so that the clutch gear 32 and the meshing teeth between the side surfaces are brought into contact with each other.
By connecting both clutch gears 32 and 33, the drive of the plate cylinder gear 30 is transmitted to the unit connecting gear 34 via both clutch gears 32 and 33. At this time,
The motor 48 of the drive means 47 is stopped, the clutch gear 49 is moving in the C direction, and the clutch gear 49 and the water supply gear 35 and the inker gear 36 are disengaged. By doing so, the rotation of the plate cylinder gear 30 is transmitted from the water supply gear 35 and the inker gear 36 meshing with the machine connection gear 34 along the transmission path indicated by the arrow E in FIG. 1 to drive the water supply device. Gear train 38
And the inking device drive gear train 46 are rotationally driven.

When the inking device drive gear train 46 is rotationally driven, the gear 42 is also rotationally driven, and the shaft 5 of the swing roller 15 is rotated.
4 rotates, and this rotation is transmitted to the rotation transmitting shaft 52 via the gears 55 and 53. With the rotation of the rotation transmission shaft 52, the swing lever 51 swings left and right as shown by the two-dot chain line in FIG. 2 by the swing motion of the swing shaft, so that the shafts 54 and 56 reciprocate left and right. Both swing rollers 15 and 8 of the inking device 10 also swing to the left and right.
By the reciprocating movement of the shaft 56, the swing lever 58 swings left and right about the center as a fulcrum, so that the shaft 60 reciprocates left and right and the swing roller 23 of the water supply device 27 also swings left and right. In this way, the swing roller 23 of the water supply device 27 swings in synchronization with the both swing rollers 15 and 8 of the inking device 10 by the common swing mechanism 50. In this way, the water supply device 27 and the inking device 10 are driven, and the swing roller 1
By swinging 5, 8, and 23, a uniform ink film and a uniform water film are supplied to the surface of the plate mounted on the plate cylinder 3.

Next, the operation for cleaning the inking device and the water supply device will be described. In this case, the clutch 31
The air cylinder is operated to move the clutch gear 33 in the direction A to disconnect the meshing teeth of the clutch gear 33 and the clutch gear 32, and the electromagnetic solenoid of the driving means 47 is operated to operate the clutch gear 49. The clutch gear 49 is engaged with the water supply gear 35 and the inker gear 36 by moving in the D direction. By doing so, the rotation of the plate cylinder gear 30 is blocked from being transmitted to the machine connecting gear 34, the rotation of the plate cylinder 3 is separated from the rotation of the inking device 10 and the water supply device 27, and the rotation of the motor 48 is stopped. Is transmitted along the transmission path indicated by the arrow F through the water supply transmission gear 35 and the inker gear 36, and the water supply device drive gear train 38 and the inking device drive gear train 46 are rotationally driven, so that the inking device 10 and the water supply device 27. Is motor 4
8 is used as a drive source.

In this way, the inking device 10 and the water supply device 2
7 is separated from the rotation of the plate cylinder 3 and is driven by a motor 48 which is a separate drive source.
It is possible to wash the water supply device 27 with the water. At this time, the swing roller 2 of the water supply device 27 is fed through the common swing mechanism 50.
3 swings, but since the swing roller 23 is rotating,
Swimsuit rollers 25, 2 of the water supply device 27 facing this
No slippage with 6 and no damage to the surface. Further, since the bridge roller 28 is provided in contact with the inking roller 5 of the inking device 10 and the swimsuit roller 25 of the water supply device 27, any one of the rollers of the inking device 10, for example, Rider roller 19
By injecting the cleaning liquid onto the cleaning device, not only the inking device drive roller group 46 of the inking device 10 but also the water supply device drive roller group 38 of the water supply roller 27 can be simultaneously cleaned via the rider roller 28.

Further, since the driving of the plate cylinder 3 from the inking device 10 and the water supply device 27 is separated by the clutch 31, the plate cylinder 3 can be washed alone or simultaneously with the inking device 10 and the water supply device 27. You can also do it. Further, when the number of colors is changed, the clutch 31 is operated to release the connection of the meshing teeth of the clutch gear 32 and the clutch gear 33 with respect to the unit that is no longer needed. Thus, the driving of the inking device 10 and the water supply device 27 can be stopped. Also,
It is also possible to replace the rollers of the inking device 10 and the water supply device 27 while cleaning the plate cylinder 3.

Although the bridge roller 28 is provided to wash the inking device 10 and the water supply device 27 at the same time, one of the roller groups on the water supply roller 27 side is not provided and the bridge roller 28 is not provided. Alternatively, the cleaning liquid may be sprayed on, and in that case, the inking device 10 and the water supply device 27 may be separately cleaned. In addition, the inking device 10
Although the drive system of the water supply device 27 and the water supply device 27 is configured by gears, the invention is not limited to this, and a sprocket and a chain or a timing belt may be used, and various design changes are possible.

[0021]

As described above, according to the present invention,
By providing a clutch for connecting and disconnecting the connection between the first prime mover and the rotation transmitting means of the inking device and the water supply device, and the second prime mover driving the rotation transmitting means of the inking device and the water supply device, Since you can choose to wash the plate cylinder, inking device, and water supply device simultaneously or individually,
Cleaning efficiency is improved. Further, since the rollers of the inking device and the water supply device can be replaced while the plate cylinder is being washed, the preparation time can be shortened. In addition, the number of colors can be easily changed by simply disconnecting the clutch.

Further, according to the present invention, even when the shaking roller of the inking device and the shaking roller of the water supply device are connected by a common shaking mechanism, the second prime mover can be used even when the inking device is washed independently. Since the water supply device is also connected to
Damage to the surface of the swing roller of the water supply device and the roller that is in contact therewith is prevented.

[Brief description of drawings]

FIG. 1 is a gear arrangement diagram showing a gear configuration of a driving device for a printing press according to the present invention.

FIG. 2 is a developed front view of a driving device for a printing press according to the present invention.

FIG. 3 is a side view of a driving device of a printing machine according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Printing unit, 3 ... Plate cylinder, 8, 15, 23 ... Shaking roller, 10 ... Ink device, 27 ... Water supply device, 30 ... Plate cylinder gear, 31 ... Clutch, 34 ... Machine connecting gear, 35 ...
Water supply gear, 36 ... Inker gear, 38 Water supply device drive gear train, 46 ... Ink device drive gear train, 47 ... Separate drive means, 50 ... Common swing mechanism.

Claims (3)

[Claims] 1. A printing system comprising: a first prime mover that rotationally drives a plate cylinder; a rotation transmission unit of an inking unit that transmits rotation to an inking unit; and a rotation transmission unit of a water supply unit that transmits rotation to a water supply unit. And a second prime mover for driving the rotation transmitting means of the inking device and the water supply device, the clutch for opening and closing the connection between the first prime mover and the rotation transmitting means of the inking device and the water supply device. A drive device for a printing press, which is characterized in that 2. The driving device for a printing press according to claim 1, wherein the shaking roller of the inking device and the shaking roller of the water supply device are connected by a shaking mechanism. 3. A printing machine comprising: a first prime mover for rotationally driving a plate cylinder; an inking device drive gear train for transmitting rotation to an inking device; and a water supply device drive gear train for transmitting rotation to a water supply device. A machine connecting gear that meshes in common with an inker gear on the drive source side of the inking device drive gear train and a water supplying gear on the drive source side of the water supply device drive gear train; and this machine connecting gear and the plate of the plate cylinder A clutch gear that connects and disconnects the body gear, another clutch gear that meshes in common with the inker gear and the water supply gear, and connects and disconnects this mesh, and a second prime mover that drives the other clutch gear. And a drive device for a printing press.