JP3010123B2 - Printing unit mounting structure for rotary printing press - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary printing machine capable of multicolor printing.

[0002]

2. Description of the Related Art Conventionally, a rotary printing machine of this type includes an impression cylinder (printing drum), and a plurality of printing units and ink drying units alternately arranged around the impression cylinder. wound by printing corresponding to the product by letterpress printing unit on a paper roll to move, it is dried by the ink drying unit, there has been known one which is adapted sequentially performed for each color print (e.g., real fair 3-4
No. 505). The printing unit includes a plate cylinder for mounting a relief plate, an ink application roller, an ink mixing roller,
An ink having a relatively high viscosity is used, which includes an ink fountain (ink pallet) or the like.

[0003]

By the way, letterpress is classified into a resin letterpress method and a flexographic method, and the former inking means requires a sticky roller, has a complicated structure, and has problems in ink filling and adhesion. There is. Further, the latter flexographic inking means has a relatively simple structure, but has some problems in ink filling and adhesiveness. SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and aims to increase the ink filling and adhesion, and to simplify the structure, maintenance and repair of the inking means and reduce costs. Is to provide a rotary printing machine that can.

[0004]

According to the present invention, the following technical measures have been taken in order to achieve the above object. That is, according to the present invention , an impression cylinder is attached to a printing press frame,
A printing unit mounting portion is provided at an arbitrary interval in the circumferential direction of the impression cylinder.
Print units are installed at each print unit mounting part.
The printing unit is mounted between the impression cylinder
And the ink cylinder where the ink is stored
And the ink for applying the ink in the ink fountain to the plate cylinder.
The printing cylinder is equipped with a printing unit.
Can be adjusted to adjust the center distance between the plate cylinder and impression cylinder
Is provided on the first movable frame attached to the Noh ,
The ink application roller and ink fountain are attached to the printing unit
To adjust the distance between the plate cylinder and the ink application roller.
Provided on a second movable frame which is mounted so as to be adjustable.
Rotary printing press, the second movable frame
Is separate from the first movable frame on the printing unit
And the second movable frame
A rack is provided at the
Nions are attached to the printing unit attachment section via a shaft,
By rotating the shaft, the second movable frame is positioned.
It is characterized by being adjustable .

Further, according to the present invention, the first movable frame is provided on the printing press frame so as to be movable in the horizontal direction so that the distance between the axes of the plate cylinder and the impression cylinder can be adjusted according to the diameter of the plate cylinder .
The second movable frame is characterized in that is found arranged to be horizontally moved in a printing press frame so as to allow adjusting the center distance between the plate cylinder and the ink form roller according to the diameter of the plate cylinder. Further, the present invention is characterized in that a part of the printing unit is a letterpress printing unit and / or a screen printing unit, and is detachably attached to the printing unit attachment portion.

[0006]

According to the present invention, when the impression cylinder is rotationally driven by the driving means, the drive gear that rotates together with the impression cylinder continuously connects each plate cylinder via the transmission gear at the same peripheral speed as the impression cylinder. Rotate. On the other hand, the printing material circulates around the impression cylinder, is sandwiched between the plate cylinder and is sent out, and ink is applied to a plate attached to the plate cylinder by an ink applying roller, and printing is performed by the plate. Further, since at least one of the ink fountain, the plate cylinder, and the ink applying roller is heated to an appropriate temperature by the heating means, the letterpress printing ink having high viscosity is heated at normal temperature to increase the fluidity, and the flow of the ink is increased. Smoother,
As a result, the ink on the plate cylinder and the adhesion to the printing material are improved. Further, since the plate cylinders are rotated at the same peripheral speed, the colors and alignment of each plate are favorably performed, and high-precision, high-quality printing can be performed.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show a first embodiment of the present invention. Reference numeral 1 denotes a pair of left and right printing press frames. A support shaft 2 is mounted on a center portion of the frame 1. An impression cylinder 3 and a drive gear 4 having substantially the same diameter as the impression cylinder 3 are fixedly mounted, and a printing material 5 wound along the outer periphery of the impression cylinder 3 is guided and transferred. Drive means to rotate driving the impression cylinder 3 is provided at a lower portion of the frame 1, a drive shaft rotated by a driving source such as an unillustrated motor, transmission gearing consisting of a bevel gear or the like to the drive shaft
And a transmission tooth wheel interlocking rotating through, said transmission Doha wheel is meshed with <br/> drive gear 4.

In the frame 1, seven printing unit mounting portions 6A to 6G are arranged at arbitrary intervals in the circumferential direction of the impression cylinder 3 so as to protrude in the radial direction. The upper surfaces of the printing unit mounting portions 6A to 6G are substantially horizontal. The printing units 7A to 7G are mounted on the mounting portions 6A to 6G, and the ink drying means 8 is provided between the printing units 7A to 7G.
A to 8G are provided, respectively, so that the printing medium 5 sent from the printing unit 7A side goes around the impression cylinder 3 and is sent out from the printing unit 7G in a printing completed state.

As shown in FIG. 2 , the printing units 7A to 7G have the same configuration, and include a plate cylinder 10 mounted on the mounting portions 6A to 6G via a pair of left and right first movable frames 9. The first movable frame 9 comprises an inking means 12 attached to the mounting portions 6A to 6G via a pair of left and right second movable frames 11 separate from each other. Both movable frames 9, 11 are attached to the mounting portion 6A. It is mounted so that it can move horizontally with respect to .about.6G and its position can be adjusted and can be replaced. The movable frames 9 of the printing units 7A to 7G are
As shown in FIG. 2 and FIG. 3, the nuts 13 fixed to the lower end of the movable frame 9 are screwed together with the mounting portions 6A to 6G.
2 is mounted so as to be movable in the horizontal direction as indicated by an arrow A in FIG. 2 by a screw shaft 14 which is rotatable and is not movable in the axial direction, and is positioned and adjusted by positioning bolts 15 mounted on the mounting portions 6A to 6G. It is supposed to be.

The plate cylinder 10 is provided with a plate cylinder drive gear (intermediate transmission gear) 16 and a horizontal shaft 1 parallel to the drive shaft 2.
7, the both ends of the shaft 17 are exchangeably supported by the movable frame 9 via bearings 18, the gear 16 meshes with the drive gear 4, and the impression cylinder 3 and the plate cylinder 1
0 rotates at the same peripheral speed. The plate (not shown) attached to the plate cylinder 10 is replaceable. The movable frame 11 is mounted on the mounting portions 6A to 6G so as to be horizontally movable and exchangeable in a direction indicated by an arrow A in the figure, and a rack 19 is horizontally mounted downward on both left and right outer portions. The rack 19 is provided with the mounting portions 6A to 6G.
The movable frame 11 can be moved back and forth by rotating the shaft 20 by rotating the shaft 20.

The inking means 12 is provided on the frame 11 with axes 22, 23, 24 parallel to the drive shaft 2, respectively.
Ink roller 25 rotatably mounted via
26, 27, an ink fountain 28, and a scraper 30 rotatably mounted via a shaft 29 parallel to the shaft 22.
And the rollers 25-2 fixed to the shafts 22-24.
Transmission gears 31, 32, 33 rotating integrally with
And a heating means 34 (heater) mounted on the ink fountain 28, and the ink fountain 28 contains a relief ink 35.

The transmission gears 31 to 33 mesh with each other, and the transmission gear 31 is meshed with the plate cylinder drive gear 16 so as to be able to be separated from and brought into contact with it. Therefore, each of the ink applying rollers 25 to 27 is rotated at the same peripheral speed as the impression cylinder 3 and the plate cylinder 10. The ink applying rollers 25 to 27 come into contact with each other, and the ink applying roller 25 comes into contact with the plate 36 attached to the plate cylinder 10 to apply ink.
The ink application roller 25 is formed of a mesh roller (anix roller), and the tip of the scraper 30 comes into contact with or as close as possible to the roller 25 to adjust the ink application amount. .

Further, each of the ink applying rollers 25 to 27 also has
A heating means (not shown) such as an electric heater can be attached to all or at least one as necessary.
On the other hand, the heating means 34 of the ink fountain 28 can be omitted, and a heating means should be provided so that the flow of the ink becomes smooth and the ink filling and the adhesiveness become appropriate. By this heating means, a conventional letterpress ink can be used, and a kneading roll, which is conventionally indispensable, becomes unnecessary. The printing unit 7G mounted on the mounting portion 6G, which is the final printing stage, has its plate cylinder 1 as shown in FIG.
Numeral 0 contacts a small-diameter impression cylinder 37 provided separately from the large-diameter impression cylinder 3, and a transmission gear 38 of substantially the same diameter is mounted on the impression cylinder 37 so as to rotate coaxially and integrally. The plate gear 16 meshes with the transmission gear 38 and meshes with the drive gear 4 via the intermediate transmission gear 39.

According to the first embodiment, when the drive shaft 2 is rotated by the drive source, the impression cylinder 3 and the drive gear 4 make the plate cylinder 10 the same as the impression cylinder 3 via the plate cylinder transmission gear 16. Rotate continuously at peripheral speed. The inking roller 25 continuously rotates the inking roller 25 at the same peripheral speed as the impression cylinder 3 via a transmission gear 31 that meshes with the plate cylinder transmission gear 16. Similarly, via the transmission gears 32 and 33, the ink application roller 2
6 and 27 are continuously rotated at the same peripheral speed as the impression cylinder 3.
On the other hand, the printing material 5 is wound or wrapped around the impression cylinder 3 and
0, is fed in the direction indicated by the arrow in FIG. 1, and ink is applied to a plate 36 attached to the plate cylinder 10 by the ink application roller 25, and the printing material 5 is
Printing is performed in.

On the other hand, the ink 35 in the ink fountain 28 is heated to an appropriate temperature by the heating means 34 so that its flow becomes optimal for printing, and the ink applying rollers 27 and 26
Is attached to the inking roller 25 which is in contact with the plate 36 via the
5, the amount of ink adhering to the surface of the plate 5 is properly adjusted.
The amount of ink applied to the printing medium 5 is controlled, and the height and adhesion of the ink to the printing substrate 5 are improved, so that high-quality printing is performed stably and continuously. FIG. 4 shows a second embodiment of the present invention,
The difference from the first embodiment is that the lower left printing units 71D and 71E use a screen plate.
The upper left printing units 71F and 71G use letterpress (resin letterpress method), and one printing press can perform three types of printing on the printing substrate 5.
Each printing unit is replaceable.

In FIG. 4, the same components as those in the first embodiment are denoted by the same reference numerals as in FIG. 1, and the detailed description is omitted. Also, the screen printing units 71D, 71E
As the letterpress printing units 71F and 71G, a conventionally used or improved one can be used, and a conventional flexo type can also be used. Further, the number and arrangement of the printing units can be appropriately selected and changed in addition to those shown in FIG. The present invention is not limited to the above embodiments.For example, the plate, all or a part of the components of the inking means may be configured to be heated by the heating means, and the number of printing units may be increased or decreased. The design can be changed as appropriate.

[0017]

As described above, the present invention provides a printing press frame, an impression cylinder and a driving gear attached to the frame via a support shaft, a driving means for driving the impression cylinder to rotate, and a pressurizing method for the frame. A printing unit provided at a plurality of printing unit mounting portions provided at arbitrary intervals in the circumferential direction of the cylinder, and ink drying means provided between the printing units, and all or a part of the printing unit Is an ink fountain in which ink is stored, a plate cylinder that sends out a printing material between the impression cylinder, an ink application roller that applies ink in the ink fountain to the plate cylinder, an ink fountain, a plate cylinder, and ink. Heating means for heating at least one of the forming rollers, and each plate cylinder is linked to the impression cylinder via a transmission gear by a driving gear so as to be driven at the same peripheral speed as the impression cylinder. Color matching and alignment for each plate of printed matter It is easy to adjust the timing and improve the efficiency of adjustment work and reduce the occurrence of wasted paper. In addition, the flow of ink is smooth, the ink filling and adhesion are improved, and the printing accuracy and quality are improved. In addition, the structure, maintenance and repair of the inking means are simple and the cost can be reduced.

Further, according to the present invention, a plate cylinder is provided on a printing press frame so as to be movable in a horizontal direction so that the distance between the plate cylinder and the impression cylinder can be adjusted in accordance with the diameter of the plate cylinder. 1 Provided on the movable frame, the ink fountain and the ink application roller
Setup work efficiency provided on a second movable frame provided in a printing machine frame so as to be movable in the horizontal direction so that the axial distance between the plate cylinder and the inking roller can be adjusted according to the diameter of the plate cylinder. Can be greatly improved.
Furthermore, the present invention, a part of the printing unit, a letterpress unit and / or the screen printing unit, since the mounted detachably replaced the printing unit mounting portions, off Rekiso printing on one printing press , Screen printing and letterpress printing units can be arbitrarily combined to perform various printings at the same time.

[Brief description of the drawings]

FIG. 1 is a schematic front view showing a first embodiment of the present invention.

FIG. 2 is an enlarged front view of the printing unit in the embodiment.

FIG. 3 is a partially omitted enlarged plan view of FIG. 1;

FIG. 4 is a schematic front view showing a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 1 printing machine frame 2 drive shaft 3 impression cylinder 4 drive gear 5 printing material 6A to 6G printing unit mounting portion 7A to 7G printing unit 8A to 8G ink drying means 9 first movable frame 10 plate cylinder 11 second movable frame 12 inking Means 16 Transmission gear for plate cylinder 25 Ink roller 28 Ink fountain 34 Heating means 35 Ink 71D, 71E Screen printing unit 71F, 71G Letterpress printing unit

Continuation of the front page (51) Int.Cl. ⁷ Identification symbol FI B41F 31/30 B41F 31/02 A (56) References JP-A-3-71849 (JP, A) JP-A-57-157785 (JP, A JP-A-60-242061 (JP, A) JP-A-58-181530 (JP, U) JP-A-4-135334 (JP, U) JP-A-61-20331 (JP, U) JP-A-60-181 12440 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B41F 5/04 B41F 5/24 B41F 11/00 B41F 13/22-13/40 B41F 31/02 B41F 31/30

Claims (3)

(57) [Claims] An impression cylinder is mounted on a printing press frame.
At the same time, the printing unit mounting portion is optional in the circumferential direction of the impression cylinder.
A plurality of printing units are installed at intervals, and
The printing unit is attached to the impression cylinder.
Plate cylinder that feeds out the printing material and ink is stored
Apply the ink fountain and the ink in the ink fountain to the plate cylinder
The printing drum is provided with a printing unit.
Position on the mounting part to adjust the center distance between the plate cylinder and the impression cylinder.
Provided on a first movable frame which is mounted so as to be adjustable.
The ink application roller and ink fountain are
Adjust the center distance between the plate cylinder and the ink application roller
To the second movable frame, which is mounted so that the position can be adjusted
In the rotary printing machine provided, the second movable frame is provided on the printing unit mounting portion with the first movable frame.
It is mounted separately and interchangeably from the frame,
A rack is provided on the second movable frame, and
The pinion meshed with the
By rotating the shaft,
The moving frame is adjustable in position.
Printing unit mounting structure for rotary printing press. A first movable frame provided on the printing press frame so as to be movable in a horizontal direction so that an axial distance between the plate cylinder and the impression cylinder can be adjusted according to a diameter of the plate cylinder;
Arm is in claim 1, wherein it has been found arranged to be horizontally moved in a printing press frame so as to allow adjusting the center distance between the plate cylinder and the ink form roller according to the diameter of the plate cylinder A printing unit mounting structure for the rotary printing machine according to the above. 3. The printing unit according to claim 1, wherein a part of the printing unit is a letterpress printing unit and / or a screen printing unit, and is detachably attached to the printing unit attachment portion. of the rotary printing press of
Printing unit mounting structure .