JPS60183149A - Inking roller-assembly for printer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an inking roller skewer assembly for printing presses, particularly rotary presses.

It is already known that in printing machines, especially rotogravure printing machines, one inking system has a rotating inking roller which draws ink from an ink reservoir and applies it to the printing roller. ing. Also,
It is also already known that in high-end printing it is necessary to maintain the ink at an optimum temperature if uniform tone and constant hue printing is to be obtained.

Moreover, this type of pre-inking requires special mechanisms in the system to prevent ink from accumulating during printing stops, while said ink-filling is an absolute requirement for the system. However, it is necessary to frequently clean the essential ink pan. These requirements all serve to increase the complexity of accurately and precisely setting the inked roller assembly.

A first object of the present invention is to provide a new inking system which eliminates the drawbacks inherent in similar prior assemblies and yet allows rapid adjustment of the inking to both clockwise and counterclockwise rotations of the printing press. providing a roller assembly, without the need to provide an ink level pan, thus reducing the amount of circulating ink and solvent evaporation, and of course making ink conditioning easier; It allows selective ink to be applied in a uniform manner over the entire length of the print roller, and at the same time adjusts the flow of the ink supplied to the print roller. The purpose is to provide a simple means to adjust the pressure on the rollers.

Another object of the invention is to provide a simple and functional means for differentially metering ink acid across the printing rollers depending on the particular nature of the printing process being carried out.

Yet another object of the present invention is to have a simple and functional structure for both the inking roller assembly and the inking roller location.

The object is to provide a mechanism that can be moved relative to the axis of the printing roller depending on the diameter of the printing roller.

According to the invention, these objects are achieved by arranging the ink roller over its entire length on either side of the roller in conjunction with a slit nozzle arranged for supplying ink. can do.

Each ink supply nozzle has an ink jet facing a pair of rollers made up of an ink feeder roller and a print roller. )4['', and its remote end is preferably connected to a tubular header chamber communicating with the supply pipe, so that the supply nozzle can be shut off.

It is also desirable to connect two pipes that can be shut off to a common main supply line.

Still further, the ink supply nozzle is adjustably mounted on one leg of the swinging arm which also houses the inkjet roller, the other leg of the swinging arm being interlocked with an actuator mechanism. It is desirable to connect it in this way.

In addition, the slit opening of the nozzle has a thin vertical f
l: ! It is preferable to separate the exits by creating separate exits using a single shutter, and to selectively shut off these exits using one stage of movable shutters.

The present invention will be described in detail below with reference to the embodiments shown in the drawings.

As best seen in FIG. 1, this inkjet assembly, although shown entirely at 1, has a printing roller 2, which is rotated in either direction, denoted f and g, respectively. It can also be driven in any direction.

This printing roller 2 has a dowel extending parallel to the roller. A roller 3 is provided for the ink type without a level plate.

Spring means 4. Via suitable means, such as a pneumatic or hydraulic cylinder, the inking roller 3 presses against the printing roller 2 with a predetermined force p. On both longitudinal sides of the printing roller 2 and the inking roller 3, corresponding ink supply nozzles 5 and 6 are arranged with jets 7 and 8, respectively, on the side facing the roller 2 and the roller 3; On the other hand, the rear part of each nozzle 5, 6 is enlarged to define a header chamber 9 and IO, respectively.

Each header chamber 9 and 10 communicates with a supply line 11.12, for example a flexible hose, by which the supply of ink from the main line 15 can be selectively controlled by means of a cock 13 and 14, respectively. Can be blocked.

In this way, the ink is delivered to nozzle 5 or 6, respectively.
This means that the ink can be supplied to either the chamber 9 or the chamber 10, and in this case, inking can be done by rotating the roller 2 clockwise or counterclockwise, as indicated by arrows f and g in FIG. It is easy to adjust to any rotation. The main line 15 is connected to a pump 16,
The rotary drive 17, via an interlocking transmission means 18,
It is connected to a drive pulley or wheel 19 which is preferably rotated at a speed equal to the rotation of the printing roller 2. In this way, the supply speed of the pump 16 and thus the supplied ink can be varied in accordance with the rotational speed of the printing roller 2 by simple means. Of course, the pump 16 can be driven separately from the motor, and its rotational speed can be controlled and varied. The pump is also equipped with a suction pipe 20 for sucking ink out of a container (not shown) in a very conventional manner.

When the printing roller 2 is used, its diameter varies between a maximum diameter and a minimum diameter d, and the ink roller 3 is supported to rotate approximately in the center of the leg 21 which is integral with the swinging arm 22. It has already been shown that this is desirable. The legs 21 further house the ink supply nozzles 5 and 6 in an adjustable manner as shown by the arrows. The leg 21 further includes a cross pin 2 as a whole.
A rocking arm 22 supported in a pulsating manner around 4
It is firmly connected to the other leg of the A threaded rod 25 with a steering handle 26 is connected to the free end of this leg 23, so that when this threaded rod 25 is moved in the direction of the arrow 1
By pulsating the leg 21 downward L as indicated by the arrow i, and taking into account the different diameters d of the printing roller 2, the inking roller 3 is positioned and adjusted together with the ink supply nozzle 5.6. become.

The threaded rond or shaft 25 can also be replaced by a rank, and a single stage 25' that accommodates the screw 25 in a spring-tight fashion from the air cylinder rond.
, or similar means.

In the embodiment shown in FIG. 2, lines 11 and 12, as well as main line 15, are made into convenient resilient lines, which allow the ink supply nozzles 5, 6 and the levers or legs of the swinging arm to 21 so as not to interfere with the adjustment delay movement.

As can be clearly seen in FIG. 3, each nozzle 5 or 6 is
Each is made as a slit-type nozzle, in which the supply slit 27 is arranged opposite the ink roller 3 and the printing roller 2. The width of the slit 27 is approximately 1=10 mm. slit 27
teeth.

It is particularly preferred to use a thin longitudinal partition means 28 to define a small opening 29 which can receive a movable blocking means therein. This allows the opening to be blocked or partially or fully opened;
Inking allows the flow of ink to the roller 3 and thus to the printing roller 2 to be controlled and regulated.

The shut-off means 30 are constructed as small objects in the shape of a wedge or parallelepiped, as shown in FIG. Preferably, a steering knob is attached to its outer end; of course, said actuating rod 31 can also be connected to automatic actuating means such as electric solenoids, pneumatic plungers, etc.

The assembly according to the invention operates as follows.

Depending on either the direction of rotation f or g of the printing roller 2, the cocks 13 or 14 open respectively, allowing ink to flow to the nozzles 5 or 6. By means of control means already well known per se, the pressure of the inking roller 3 is regulated and thus, depending on the rotational speed of the printing roller 2 and the associated pulley 19, the pump 16 is actuated and supplied to the main line 15. Determine the amount of ink to be applied. It will be obvious how additional control and regulating valves (not shown) may be conveniently provided between the main supply line 15 and the pump 16.

The supplied ink reaches the respective nozzles 5 and 6 through the associated jet lowers and 8 forming slits or nozzles 27.

The ink is supplied in either a metered jet or jet. In order to correspond to the different diameters, d, of the printing roller 2, the positions of the nozzles 5 and 6 are adjusted appropriately while checking the diameter of the roller 2, and at the same time, the roller 3 is moved to apply ink. It will be done.

All openings 2 in the corresponding slit nozzle 27
Opening 9, ie removing shutter portion 30 from opening 29, allows for even inking over the entire length of the printing roller. If you want to prevent the ink from getting on the loose part of the roller 2, remove the shutter part 30.
It is only necessary to move it to the position shown in FIG. 4 and there completely block the corresponding opening 29. Of course, the blocking means 30 can also occupy an intermediate position, thus making it possible to ideally adjust the inking over the entire width of the printing roller, so that the ink along the individual parts of the web material to be overprinted is It is possible to respond to increases and decreases in the amount of acid required.

[Brief explanation of the drawing]

1 shows a printing roller and an inked roller in combination with two ink supply nozzles according to the invention; FIG. 2 shows an ink supply nozzle together with an inked roller and one of the swinging arms. FIG. 3 is a diagram showing the ink supply slit of the ink supply nozzle, and FIG. 4 is a diagram showing the ink supply slit of the ink supply nozzle. IT-IV in Figure II3
FIG. 2: Print roller, 3: Roller with ink, 5.6: Ink supply nozzle, 9.10 Header chamber. Figure 1

Claims (1)

[Scope of Claims] 1. Ink for printing presses, especially rotary presses (=In an ink roller assembly, an ink roller has slits or slits arranged on either side or over its entire length for supplying ink. An ink feeder roller assembly for a printing press characterized in that it operates in conjunction with a nozzle. 2. An ink supply nozzle faces the ink feeder roller in the form of a jet 1.1, and the flying end of the jet nozzle 3. An ink head roller assembly for a printing press according to claim 1, wherein the ink head roller assembly for a printing press is connected to a tubular header channel communicating with a supply line at a portion of the supply line. An ink roller assembly for a printing press according to claim 1 or 2, characterized in that individual shut-off means are provided. 4. The supply lines are connected to a common main supply line. 5. An ink-filled roller mid-assembly for a printing press according to claim 1 or 2, characterized in that the supply line and the main supply line are made of an elastic material. Features: 81. The ink roller assembly for a printing press according to any one of claims 1 to 4. 6. The supply line is connected to a pump, and the pump drive is connected to a pump. The ink-filled printing press according to claim 1 is connected to a drive pulley or wheel that rotates in synchronization with the rollers of the printing press via an intermediate drive. Roller assembly. 7. characterized in that an ink supply nozzle is adjustably mounted on one leg of one of the swinging arms arranged to accommodate the inking roller therebetween. Claim 1 provides a roller skewer assembly with ink for a printing press. 8. Claim 1 characterized in that the other leg of the swinging arm is connected to an actuating mechanism. 1st or 7th
The roller assembly with ink for printing presses listed in section 2. 9. The actuation mechanism has a threaded rod. Patent characterized in that said threaded rod has a steering handle thereon and engages in a slotted hole formed through the free end of the corresponding leg of said picking arm. An ink-filled roller assembly for a printing press according to claim 1 or 8. 10. Claim 1, characterized in that the threaded rod is received in its axial direction in a = r-moving stand so as to counteract the oblique force of the spring. Or the ink-equipped printing press described in item 9 is a roller assembly. 11. The ink-filled roller for a printing press according to claim 1 or 9, wherein the swing arm actuation mechanism has either an air cylinder rack or a piston rod. ·assembly. 12. The width dimension of the ink supply nozzle/slit is
1. An ink roller assembly for a printing press as claimed in claim 1, characterized in that the ink track is defined in the range of a 1-io track layer. 13. The slit-like opening of the nozzle is subdivided into individual outlets by thin vertical partitions, and the side outlets are partially or completely blocked by means of a movable shutter. An inking roller assembly for a printing press according to claim 1, characterized in that: 14. The shutter means is located inside the nozzle and has a wedge-shaped portion connected to an operating loft operated from inside the nozzle. Alternatively, the ink-equipped printing press described in item 13 is a roller assembly. ! 5. 2. An inking roller assembly for a printing press as claimed in claim 1, wherein said pump is driven by a motor whose rotational speed is adjustable.