JPH0643125B2 - Lateral shaking mechanism of kneading roller in ink supply device of printing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a kneading roller lateral swing mechanism in an ink supply device of a printing machine, and more specifically, it is composed of a large number of kneading rollers, and a plurality of kneading rollers are provided in the kneading rollers. The present invention relates to a kneading roller lateral swing mechanism in an ink supply device provided with lateral swing rollers.

[Conventional technology]

In an ink supply device composed of a large number of kneading rollers, the kneading rollers at positions contacting the upstream and downstream of the kneading rollers are laterally shaken.

A conventional kneading roller lateral swing mechanism in this type of ink supply device will be described with reference to FIG. In the figure, 20 is a rotary shaft that is linked to a drive motor of a printing press main body (not shown), and 21 is an eccentric wheel provided on the rotary shaft 20. twenty four
Is an L-shaped lever provided at the shaft end of the kneading roller 25. In the example shown in the figure, the L-shaped levers 24, 24 of the kneading rollers 25, 25 located vertically are shown.
To face each other, and the two L-shaped levers 24
The rod 23 connecting the 24 and the eccentric wheel 21 are connected by the rod 22 so that the rotating shaft 20 is rotated to reciprocate the two kneading rollers 25, 25 in opposite directions. There is.

However, in any of the above kneading rollers, the lateral swing locus is stopped and started at the same time, so that an excessive load (energy) is applied at the time of start and a large shock is given to the entire device, and a phenomenon such as uneven operation rotation occurs. Therefore, good ink kneading cannot be performed.

Therefore, the one in which a cylindrical cam is used in a part of the ink supply device to alleviate the above shock is disclosed in JP-A-47-23004 and
56-148562 and JP-B-35-32108.

[Problems to be Solved by the Invention]

However, in the ink supply device composed of a large number of kneading rollers as described above, since a plurality of oscillating rollers are provided in the kneading roller group, providing a cylindrical cam for each of them makes the structure complicated.

In view of the above, the present invention provides an ink supply device in which a plurality of oscillating rollers are arranged in a group of kneading rollers composed of a large number of kneading rollers. In the ink supply device of the printing machine, the unevenness caused by the kneading operation is prevented by swinging sideways with a cylindrical groove cam with a time lag, and the vibration at the printing machine is reduced by reducing the shock at the time of starting and stopping. It is an object to provide a kneading roller lateral swing mechanism.

[Means for Solving the Problems]

The kneading roller lateral swing mechanism in the ink supply device of the present invention supplies the ink in the ink reservoir to the kneading roller group consisting of a large number of kneading rollers by the calling roller, and divides the ink into a plurality of ink forming rollers by the downstream shaking of the kneading roller group. In an ink supply device for flowing and transferring to the plate cylinder, one cylindrical groove cam is provided outside the frame supporting the above-mentioned kneading roller group, and the cylindrical groove cam, the upstream part of the above-mentioned kneading roller group and a plurality of inks are provided. A lateral swing roller provided at a position in contact with the landing roller is connected by a swing lever swinging around a support shaft of a bearing provided on the frame.

[Work]

With the above configuration, when one cylindrical groove cam provided on the outer side of the frame is rotated, the swing levers connected to the cylindrical groove cam sequentially swing about the support shaft of the bearing.
It is possible to laterally swing a plurality of lateral swinging rollers connected to the swinging lever, at positions near the upstream flow dividing portion of the kneading roller group and at positions contacting the downstream ink forming rollers by sequentially changing the positions.

〔Example〕

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

FIG. 1 shows the arrangement of rollers in an ink supply device to which the present invention is applied. The ink in the ink reservoir (A) is sequentially sent to a kneading roller group (C) composed of a large number of kneading rollers by a calling roller a. Three inking rollers 30, 31, 32
It is configured to be transferred to the plate cylinder (B) via.

In the figure, 11a is a lateral swing roller provided near the upstream flow dividing portion of the kneading roller group (C) in order to knead the ink called by the calling roller a and to even out the unevenness of the ink in the width direction. Numerals 11d are lateral swing rollers provided in contact with the three inking rollers 30, 31, 32 in order to solve the ghost phenomenon.

The present invention provides a plurality of swaying rollers provided in the vicinity of an upstream flow dividing portion of a kneading roller group composed of a large number of kneading rollers as described above, and at a position in contact with a downstream inking roller, and the above kneading rollers. One cylindrical groove cam provided on the side surface of the frame supporting the is connected by a swing lever.

2 to 4 show the kneading roller lateral swing mechanism of the present invention in the ink supply device of FIG. In the figure, reference numeral 1 denotes a cylindrical groove cam having a groove 14 in the form of a slope (loop) formed on the outer periphery thereof, which is attached to the outer surface of a frame 15 which supports the above-mentioned kneading roller group (C). That is, the cylindrical grooved cam 1 is positioned in the vicinity of the four lateral swing rollers 11a to 11d and in consideration of their arrangement. Two
Is a pin for fixing the cylindrical groove cam 1 to the frame 15,
The cylindrical groove cam 1 is rotatably attached to the pin 2 by a nut 5 via two bearings 4 and 4.

Reference numeral 10a denotes a swing lever that connects the cylindrical groove cam 1 and a lateral swing roller 11a near the upstream flow dividing portion of the kneading roller group, and 10b.
10c is a swing lever that connects the cylindrical groove cam 1 and two lateral swing rollers 11b and 11c that contact the inking rollers 30 to 32, respectively. The swing levers 10a to 10c are the bearings 20 provided on the frame 15. It swings about the rotation supporting shafts 9a to 9c. 3 and 3 are provided at both ends of the swing levers 10a to 10c respectively, and the groove 14 of the cylindrical groove cam 1 and the swing rollers 11a to 11c are provided.
Is a bearing fitted to a grooved wheel 17 provided at the base end of the.

Reference numeral 11d denotes a lateral swing roller that contacts the inking roller 30, and the lateral swing roller 11d is connected to the lateral swing roller 11b by a swing lever 10d, and the swing lever 10d has the structure of the swing levers 10a to 10c. Is the same as.

16 is a gear formed at the base end of the cylindrical grooved cam 1
Reference numeral 16 is connected to the drive motor (M) via the intermediate gears 7 and 8.

With the above configuration, the drive motor (M) is operated to rotate the cylindrical groove cam 1 via the intermediate gears 7 and 8. By the rotation of the cylindrical groove cam 1, the swing rollers 11a to 11d are sequentially swung laterally via the swing levers 10a to 10d. That is,
When the cylindrical grooved cam 1 starts to rotate, each bearing 3 in the cam groove 14 slides along the groove 14, and each of the levers 10a-1.
0d is swung about the support shafts 9a to 9d of the bearing 20.
Due to this swinging, the swing rollers 11a to 11d are inserted and mounted in the grooved wheel 17 to cause the swing rollers 11a to 11d to move,
As shown in FIG. 4 (a), it is sequentially moved in the arrow direction to a predetermined position. Next, as shown in FIG. 4 (b), it is sequentially moved in the arrow direction, that is, it returns to the original position (FIG. 4 (a)). In this way, each swing roller 11a
~ 11d is alternately shaken sideways, so sufficient ink is kneaded. In this case, the drive motor (M) is separate from the drive motor of the printing machine main body. Therefore, if the rotation of the drive motor (M) is adjusted, the swinging motion of the swinging roller 11 can be prevented.
It is possible to freely set one reciprocating rotation or 1/2 or 1/3 even while the machine is rotating.

In the present embodiment, as described above, the cylindrical groove cam 1 is driven by a motor separate from the drive motor of the printing press main body, but one drive motor is used for the printing press main body. Even if the cylindrical groove cam 1 is driven, since a plurality of swing rollers are provided, the kneading resistance can be reduced, the acceleration can be set to 0 at the start and end of the movement, and at the time of the horizontal swing of each swing roller. The shock that occurs can be softened.

〔The invention's effect〕

Since the present invention is configured as described above, it has the following effects.

A. Since a plurality of swing rollers are provided so as to interlock with one cylindrical groove cam, the acceleration can be set to 0 at the beginning and end of movement, and the shock generated when the swing rollers laterally swing is softened. You can

B. Also, since each swing roller can be operated via one lever on one cylindrical groove cam, the force applied to each swing roller can be dispersed, and one of the swing rollers is always operated. Since the ink can be laterally shaken to be in the kneading operation, the ink is always kneading operation and uniform printing can be performed.

C. Furthermore, since the kneading operation force is distributed to each swing roller, the uniform film surface is formed on the printing surface by eliminating the vibration and cylinder rotation unevenness that affect the entire ink supply device such as the frame and plate cylinder. Can be made.

In addition, since a simple and compact structure in which a plurality of swing rollers are interlocked with one cylindrical groove cam, the entire device can be made compact, and clear printing can be performed with few failures.

As described above, the present invention, which has many effects, is a kneading roller in an ink supply device of a printing machine, which is superior to the conventional mechanism not only in terms of performance but also in terms of operation, economy, and practical use. It can be said to be a lateral swing mechanism.

[Brief description of drawings]

FIG. 1 is a schematic view of a mechanism showing an ink supply device of the present invention,
2 to 4 are partially enlarged explanatory views showing the essential parts of the device of the present invention, and FIG. 5 is a schematic view of the mechanism of the conventional device. A ... Ink pool, B ... Plate cylinder C ... Mixing roller group, a ... Calling roller 1 ... Cylindrical groove cam 9a-9d ... Spindle 10a-10d ... Swing lever 11a-11d. Roller 20 …… Bearing 30, 31, 32 …… Inking roller

Claims (1)

[Claims] 1. An ink supply for supplying ink from an ink fountain to a kneading roller group consisting of a large number of kneading rollers by a take-out roller, and diverting it to a plurality of inking rollers at the downstream of the kneading roller group to transfer it to a plate cylinder. In the apparatus, one cylindrical grooved cam is provided on the outside of the frame that supports the above-mentioned kneading roller group, and the cylindrical grooved cams are respectively provided at the positions in contact with the upstream part of the kneading roller group and a plurality of inking rollers. And a horizontal swing roller, which are connected to each other by a swing lever swinging around a support shaft of a bearing provided on the frame, respectively.