JPH0347886Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a rotary printing press.

Rotary printing presses are efficient when printing the same pattern continuously, but if you try to use a rotary printing press to print printed matter with partially different designs, you will have to stop the machine midway through printing and change the plate. Alternatively, it is inconvenient that the area where the image is to be changed must be left blank, only the same image printed beforehand, and the area with a different image later printed separately.

This invention was developed in consideration of the above-mentioned issues, and it is possible to print printed matter with partially different designs continuously without stopping the machine each time the pattern is changed, and it is possible to print printed matter with partially different designs in the same way. The purpose is to provide a rotary printing press that can print as efficiently as printed matter with pictures.

Embodiments of the present invention will be described below based on the drawings.

In the figure, 1 is a paper feeding section consisting of a splicer 1a and a constant tension device 1b, 2a, 2b, 2c, . A cooling and humidifying section, 5 a folding section, and 6 a stacker are arranged in series from the paper feed section 1.

Reference numeral 7 designates an imprinter disposed between the paper feed section 1 and the printing unit 2a, and this imprinter 7 is constructed as shown in FIG. 2, and includes one impression cylinder 8 and a corresponding one. Two plate cylinders 9a, 9b,
It consists of two sets of inking mechanisms 10a, 10b that supply ink to both plate cylinders 9a, 9b. Bearing member 11 that supports the plate cylinders 9a and 9b
a and 11b are rotatably supported by frame frames on both sides. And each bearing member 11
a, 11b are connected to cylinder devices 12a, 12b whose one ends are pivotally supported on the frame side, and the expansion and contraction of the cylinder devices 12a, 12b causes the plate cylinders 9a, 9b to apply a predetermined pressure to the impression cylinder 8. The pressure cylinder 8 moves from a state in which it is in contact with the impression cylinder 8 to a state in which it is separated from the impression cylinder 8 by a predetermined gap. 13
Numerals a and 13b are covers that cover both plate cylinders 9a and 9b, and can be opened and closed.

FIG. 3 shows an interlocking mechanism between the impression cylinder 8 and the plate cylinders 9a and 9b.
It is connected to the main driving shaft 15 via. 14
a is a registration motor, and this vertical registration motor 14a drives the vertical registration mechanism 14, so that the rotational phase of the impression cylinder 8 and plate cylinders 9a, 9b is relative to the rotational phase of the main driving shaft 15. The top and bottom registration of the paper running between the impression cylinder 8 and the plate cylinders 9a, 9b is achieved with a deviation.

Drive gears 16a, 16b are provided on both sides of the impression cylinder 8 in the axial direction.
is fixed. Further, drive gears 1 on the impression cylinder 8 side are provided on both sides of each of the plate cylinders 9a and 9b in the axial direction.
Driven gears 17a, 17b meshing with 6a, 16,
18a and 18b are supported. Of these driven gears 17a, 17b, 18a, 18b, each driven gear 17a, 18b on one axial side is connected to the shaft of each plate cylinder 9a, 9b via a synchronous clutch 19a, 19b for starting. ing. The driven gears 18a, 18a on the other axial side are connected to the shafts of the plate cylinders 9a, 9b via fixed position clutches 20a, 20b for register and phase restoration.

The synchronizing clutches 19a, 19b and fixed position clutches 20a, 20b are used to align the phase of the plate cylinder and the phase of the impression cylinder 8 when the plate cylinder that has been separated from the impression cylinder 8 comes into contact with the impression cylinder 8 again. belongs to. That is, the synchronous clutches 19a and 19b are
When this is turned on, it immediately engages the shaft of each plate cylinder 9a, 9b and the driven gears 17a, 18a supported thereon, and the fixed position clutches 20a, 20b, even when turned on, They are not engaged immediately, but are turned ON when the plate cylinders 9a, 9b and the impression cylinder 8 are synchronously rotated by the synchronous operation caused by the engagement of the synchronizing clutches 19a, 19b. and the above synchronized clutch 19
a, 19b are fixed position clutches 20a, 20b.
It is designed to turn OFF at the same time as it turns ON.

Reference numerals 21a and 21b are manual handles for manually rotating the plate cylinders 9a and 9b during plate changes, and these are equipped with a clutch on one side.

Figure 4 shows the plate cylinders 9a, 9b and the cylinder device 1.
2a and 12b, and shows the connection mechanism with plate cylinder 9.
The bearing members 11a, 11b of a, 9b are connected to the cylinder devices 12a, 1 through link mechanisms 22a, 22b.
It is connected to 2b. 23 is a printing pressure adjusting device provided in the middle of each link mechanism 22a, 22b, and this printing pressure adjusting device 23 is designed as shown in FIG. . It consists of an eccentric wheel 25 and a rotating device 26 such as a worm mechanism for manually rotating the eccentric wheel 25. 27 is an adjustment screw for large adjustments, and 28 is a manual handle for fine adjustments.

In the above configuration, the rotary paper 29 in the paper feed section 1 is printed in multiple colors by passing through each printing unit 2a, 2b, 2c, . At this time, the rotary paper 29 passes through the imprinter 7, is wound around the impression cylinder 8 of the imprinter 7, and passes through the surface facing the two plate cylinders 9a and 9b. In this state, the upper cylinder device 1
2a is extended and the lower cylinder device 12b is shortened, the upper plate cylinder 9a is brought into pressure contact with the impression cylinder 8, and the lower plate cylinder 9b is separated from the impression cylinder 8.

In this state, the synchronizing clutch 19a provided on the shaft of the upper plate cylinder 9a and the fixed position clutch 20a are simultaneously turned on. At this time, since the impression cylinder 8 and the plate cylinder 9a are not in register, the fixed position clutch 20
a and 20b slip, and the impression cylinder 8 and plate cylinder 9a rotate due to engagement by the synchronizing clutch 19a, starting synchronous operation. That is, the rotation of the impression cylinder 8 and the rotation of the plate cylinder 9a are slightly out of phase, and when the impression cylinder 8 and the plate cylinder 9 are in register, the fixed position clutch 20a is engaged in the correct position and the plate cylinder is rotated. 9a and impression cylinder 8
are rotated in the same phase. At the same time as the mesh is engaged at this correct position, the synchronous clutch 19a is turned OFF.

At this time, the lower plate cylinder 9b is arbitrarily stopped by turning off the clutches 19b and 20b provided on its shaft, so the next printing will be performed on this lower plate cylinder 9b. Set the version you want.

In the above state, a predetermined number of sheets are printed using the upper plate cylinder 9a, and when this is completed, the upper plate cylinder 9a is separated from the impression cylinder 8 by switching using an electric signal or manually. The plate cylinder 9b is pressed against the impression cylinder 8. In this way, the image formed by the plate on the lower plate cylinder 9b is printed on the subsequent rotary paper 29.

At this time, the plate of the pattern to be printed next is set on the upper plate cylinder 9a in the same way as in the above case.

The plates are set by opening the covers 13a and 13b.

The above operations are performed without stopping the machine.

The present invention is as described above, and a plurality of printing units 2a, 2b, 2 are arranged in series with respect to the paper feed section 1.
c, . . . and processing sections such as a drying section 3 and a cooling/humidifying section 4, there is a It consists of an impression cylinder 8 and a plurality of plate cylinders 9a, 9b facing this impression cylinder, and each plate cylinder 9a,
Bearing members 11a, 11b supporting the plate cylinders 9b are rotatably provided from a position where each of the plate cylinders 9a, 9b contacts the impression cylinder 8 to a position away from the impression cylinder 8. An imprinter 7 is provided which is connected to a drive means for moving the image, and the impression cylinder 8 of the imprinter 7 is used to print the image on the running paper by the printing units 2a, 2b, 2c, . . . It is connected to the main drive shaft 15 via a vertical registration mechanism 14 that adjusts the vertical registration, and the impression cylinder 8 and each plate cylinder 9a, 9b are connected between the impression cylinder 8 and each plate cylinder 9a, 9b. Synchronous clutches 19a and 19b for starting installed in parallel
and fixed position clutch 2 for register and phase restoration.
Since the configuration is such that they are connected via 0a and 20b, printed matter with partially different designs can be printed continuously without stopping the machine each time the pattern is changed. can be printed as efficiently as printed matter with the same design. Further, according to the present invention, the vertical registration mechanism 14
The top and bottom registers of the impression cylinder 8 and plate cylinders 9a and 9b are controlled by the synchronous clutches 19a and 19b for starting, and the fixed position clutch 20 for restoring register and phase.
The impression cylinder 8 and the plate cylinders 9a and 9b can be registered with each other at the cylinders a and 20b without stopping the machine, and the design of printed materials with partially different designs can be quickly changed and printing defects can be prevented. It can be done without any occurrence.

[Brief explanation of the drawing]

The drawings schematically show an embodiment of the present invention, and Fig. 1 is an overall side view, Fig. 2 is a roller arrangement diagram of the main part of the invention, Fig. 3 is an explanatory diagram of the configuration of the main part, and Fig. FIG. 4 is an explanatory view showing the plate cylinder separation mechanism, and FIG. 5 is a front view of the printing adjustment device. 1 is a paper feeding section, 2a, 2b, 2c, . . . is a printing unit, 3 is a drying section, 4 is a cooling/humidifying section, 7 is an imprinter, 8 is an impression cylinder, 9a, 9b are plate cylinders, 11
a and 11b are bearing members, 14 is a vertical registration mechanism, 15 is a main driving shaft, 19a and 19b are synchronous clutches, and 20a and 20b are fixed position clutches.

Claims (1)

[Scope of utility model registration request] In a rotary printing press in which a plurality of printing units 2a, 2b, 2c, . 1 and printing units 2a, 2
b, 2c, .
1a and 11b are provided rotatably from the position where each of the plate cylinders 9a and 9b contacts the impression cylinder 8 to the position where they are separated from each other, and each of these bearing members 11a and 11b
An imprinter 7 which is connected to a driving means for rotating these is interposed, and an impression cylinder 8 of this imprinter 7 is connected to printing units 2a, 2b, 2.
The impression cylinder 8
and each plate cylinder 9a, 9b, this impression cylinder 8 and each plate cylinder 9
A rotary printing press characterized in that synchronous clutches 19a and 19b for starting are interposed in parallel between a and 9b, and fixed position clutches 20a and 20b for restoring register and phase are connected to each other.