JPH08216375A - Vibrating roller in inking arrangement of rotary press - Google Patents

Abstract

PROBLEM TO BE SOLVED: To guarantee stable drive of a distributor roller by reducing an impact load of driving a printing unit. SOLUTION: The distributor roller 3 in an inking unit of a rotary printing machine cooperates with an ink transfer roller and has a drive wheel 11 coupled to a roller shaft 6 of the roller 3. A clutch 20 is provided between the shaft 6 and a roller body 7. The clutch 20 is disengaged during printing, and operated by a pressure means by means of a friction of the roller adjacent to the rotary drive of the roller body 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lateral swing roller in an inking device of a rotary printing press, which has a drive wheel which cooperates with an ink transfer roller and is connected to a roller shaft of the lateral swing roller.

[0002]

2. Description of the Related Art German Patent Publication No. 38/38
No. 40457A1. The watering roller shown in this configuration has an elastic transmission member for transmitting a driving force to the roller body between the roller body and the roller shaft.
This seeks to dampen the shocking load on the drive member. However, depending on the magnitude of the torque transmitted by these elastic transmissions, a still significant impact load is transmitted to the drive wheels and thus to the mechanical drive.

[0003]

An object of the present invention is to reduce the shock load of driving the printing unit and to guarantee stable driving of the oscillating roller on the basis of such a situation.

[0004]

According to the present invention, a clutch is provided between a roller shaft and a roller body, and the clutch is disengaged during printing so that the roller body is driven to rotate. The clutch is operable by a pressure medium, as is done by friction with a rotating roller. The essential advantage of this solution is that when the slow rotating ink transfer roller comes into contact with the swaying roller rotating at machine speed, the involved freely rotating rollers compensate for the impact load between the individual rollers. It is a point. A slight slip occurs before the transfer roller is accelerated to the machine speed, and a slight slip also occurs between the swaying roller and the subsequent roller that drives it by friction. When separating the ink transfer roller to clean the inking unit, ensure a stable drive of the swaying roller even if the detergent is on the sides of the roller and the frictional resistance between the individual rollers is significantly reduced. Is possible with a clutch.

In a preferred construction of the present invention, one half of the clutch is connected to the roller body so as not to rotate, and the other half is supported so as to be slidable on the roller shaft by the force of a spring. It is characterized by By doing so, it is possible for the spring to automatically compress both halves of the clutch when printing is stopped on the printing press. that time,
The slidable half of the clutch is preferably operable by the pressure medium through the membrane. This pressure medium is available, for example during printing, so that the clutch is disengaged. Water or air pressure means are preferably provided. These can be used, for example, for cooling the rollers.

Another preferred solution is characterized in that the clutch is designed as a gear clutch and is engaged when cleaning the rollers of the inking unit. When cleaning the rollers, for example, if the cooling system is also shut off, the pressure means is depressurized and the gear clutch is automatically engaged. Of course, the clutch could be connected in the opposite way. In other words, when the machine rotates during the cleaning operation, pressure is automatically created and connected. Instead of pneumatic or hydraulic control, the connection can also be effected, for example, by means of electromagnets.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 shows the ink groove 1. Ink groove 1
Cooperates with the inking roller 2 and
Put a specific ink film on the side of the. An ink transfer roller 4 is provided between the ink discharge roller 2 and the lateral swing roller 3. The ink transfer roller 4 performs a pendulum motion to receive the stripe-shaped ink when it comes into contact with the side surface of the ink discharge roller 2, and transfers the ink to the side surface of the lateral shake roller 3 when it comes into contact with the side surface. Next, the ink is transferred from the oscillating roller 3 to the ink roller 5 in the subsequent stage of the inking device. At that time, a plurality of rollers can be connected to the ink roller 5, and these rollers color the plate of the plate cylinder.

FIG. 2 shows that the roller shaft 6 is supported by the ball bearing 8 on the roller body 7 of the oscillating roller 3, so that the roller body 7 can freely rotate. Further, the roller shaft 6 is attached to the machine side frame 10 by the rolling bearing 9.
The drive wheel 11 is attached to the outer end of the drive wheel 11. On the other hand, the drive wheel 11 is driven by the intermediate wheel 12. Means for moving the oscillating roller 3 in the lateral direction are known per se and are not shown in the drawing.

The roller shaft 13 on the opposite side is fixed to the roller body 7 with bolts 14. The roller shaft 13 is also supported on the machine side frame 16 by a rolling bearing 15 so that it can rotate freely and can slide in the longitudinal direction. A rotation transmission member 17 is provided at the end of the roller shaft 13,
Through this, the pressure medium is supplied to and discharged from the roller shaft 13. For example, the supply of pressure medium can take place through the pipe 18 and the discharge of pressure medium can take place through the enlarged bore 19. The pressure medium can be, for example, a cooling liquid. This cooling liquid is simultaneously used for cooling the oscillating roller 3, and is immediately put under a constant positive pressure when printing is performed by the printing machine.

The clutch 20 is shown in FIG. Clutch 2
One half 21 of 0 is supported by the roller body 7 so as not to rotate. The other half 22 of the clutch 20 is supported on the journal 23 of the roller shaft 6 such that it does not rotate and can slide in the longitudinal direction. A key 24 on the journal 23 is used to transmit the rotational force. As soon as the pressure medium is supplied through the pipe 18, the compression spring 25 is compressed and the half 22 of the clutch 20 is supported by the roller shaft 6 via the disc 26. In this position,
The teeth 27 of the clutch 20 are disengaged. Pipe 1
The pressure medium supplied through 8 drives the piston 29 through the membrane 28. On the other hand, the piston 29 slides the half 22 of the clutch 20 leftward via the thrust bearing 30 and the thrust ring 31. When the printing operation is stopped, the pressure of the pressure medium is released at the same time, so that the compression spring 25 slides the half 22 of the clutch 20 to the right to connect the teeth 27. At this position, the roller body 7, and thus the lateral swing roller 3 are connected to the mechanical drive via the drive wheel 11, so that, for example, an unintended slip may occur between the lateral swing roller 3 and the ink roller 5 in the subsequent stage. Without the need for cleaning work. The clutch 20 is disengaged during printing, and the lateral swing roller 3 is driven by the friction of the ink roller 5. As soon as the ink transfer roller 4 hits the oscillating roller 3, the ink transfer roller 4 is accelerated to machine speed. At this time, the slight load between the rollers 3, 4 and 5 compensates the impulsive load so that it cannot be transmitted to the machine drive.

The pressure medium supplied to the membrane 28 through the pipe 18 can be, for example, cooling water and the support 3
It can be fed into the roller body 7 through a hole 32 in 3 and then returned through a hole 19 and a rotary transmission member 17.

[Brief description of drawings]

FIG. 1 is a partial view of an inking device having an ink transfer roller.

FIG. 2 is a vertical cross-sectional view of a oscillating roller.

FIG. 3 is a partial view of a clutch.

[Explanation of symbols]

 1 Ink Groove 2 Ink Rolling Roller 3 Lateral Shaking Roller 4 Ink Transfer Roller 5 Ink Roller 6, 13 Roller Shaft 7 Roller Body 8 Ball Bearing 9, 15 Rolling Bearing 10, 16 Machine Side Frame 11 Drive Wheel 12 Intermediate Wheel 14 Bolt 17 Rotation Transmission member 18 Pipe 19, 32 hole 20 Clutch 21, 22 Half of clutch 23 Journal 24 Key 25 Compression spring 26 Disk 27 Teeth 28 Membrane 29 Piston 30 Thrust bearing 31 Thrust ring 33 Support

Continuation of the front page (71) Applicant 390009232 Kurfuersten-Anlage 52-60, Heidelberg, Fedé ral Republish of Germany (72) Inventor Michael Fuoger, Federal Republic of Germany 69254 Marsh, Vorufschek 49

Claims (5)

[Claims] 1. A lateral swing roller in an inking device of a rotary printing machine, comprising a drive wheel which cooperates with an ink transfer roller and is connected to the roller shaft of the lateral swing roller, wherein the roller shaft (6) and the roller body (7). A clutch (20) is provided between the clutch and the clutch (2) during printing.
0) is disengaged and the clutch (20) is operable by pressure means such that the roller body (7) is rotationally driven by friction by an adjacent roller (5). Rolling roller. 2. One half (2) of said clutch (20)
1) is connected to the roller body (7) so as not to rotate, and the other half (22) is supported so as to be able to slide on the roller shafts (6, 23) by the force of a spring (25). The oscillating roller according to claim 1, wherein 3. Swing roller according to claim 1 or 2, wherein the slidable half (22) of the clutch (20) is operable by a pressure medium via a membrane (28). 4. The oscillating roller according to claim 3, further comprising hydraulic or pneumatic pressure means. 5. The roller (3, 5) of the inking device, wherein the clutch (20) is configured as a gear clutch.
The oscillating roller according to claim 1 or 2, which is connected when cleaning.