JP2001301118A - Printer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a printer having large degree of freedoms of a disposing state of each unit and a small restriction in its installation. SOLUTION: The printer comprises at least a drive means for driving a printing unit in a sectional drive type, and a direction changing means for changing a web feeding direction to arrange the disposing state of all the units including the printing unit in a predetermined disposing state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention belongs to the technical field of a printing press. In particular, the present invention relates to a printing press that has a high degree of freedom in the arrangement of each unit in the printing press.

[0002]

2. Description of the Related Art As shown in FIG. 3, a gravure printing press includes a paper feed unit 101, an infeed unit 102, a first
To 8 printing units 103a to 103h, an outfeed unit 104, a winding unit 105, and the like. All these units are arranged in a straight line on the installation floor. This also transports the web from upstream to downstream (when viewed from above) in a straight line.

For printing registration, at least,
The rotation of the plate cylinder in the first to eighth printing units 103a to 103h needs to be synchronized. Therefore, the conventional gravure printing press has one line shaft 107 that transmits and distributes the rotational driving force of the single main motor 106 to the first to eighth printing units 103a to 103h. The line shaft 107 is configured to synchronize the rotation of the plate cylinder in each of them.

[0004] The transmission of the rotational driving force by one line shaft 107 is extremely accurate compared to other transmission mechanisms such as gears and joints. In gravure printing machines,
One of the reasons why all the units are arranged in a straight line on the floor is that it is necessary to transmit and distribute the rotational driving force by the line shaft 107.

[0005]

As described above, in the conventional gravure printing press, it is necessary to arrange all the units in a straight line on the floor, so that there is a great limitation in installation. The restriction is whether or not it can be accommodated in existing buildings,
It has a direct effect on the construction cost, space utilization efficiency, etc. of new buildings. In particular, in a gravure printing machine having a large number of printing units, such as a six-color printing machine and an eight-color printing machine, the total length is extremely long, and the installation restrictions are particularly large. Also,
In the case where a processing unit for performing processing other than printing is connected to the web after the printing unit, the restriction on the installation is extremely large, and this is an essential problem in determining whether or not the printing can be performed.

The present invention has been made to solve the above problems. It is an object of the present invention to provide a printing press that has a high degree of freedom in the arrangement of each unit in the printing press and has extremely small installation restrictions.

[0007]

The above object is achieved by the present invention described below. That is, the printing press according to claim 1 of the present invention includes a driving unit for driving at least a printing unit by a sectional drive system, and a web transport direction for setting a predetermined configuration in all units including the printing unit. And a direction changing means for changing the direction.

According to the present invention, at least the printing unit is driven by the driving means by the sectional drive system, and the web transport direction is changed by the direction changing means in order to set the layout mode to the predetermined layout mode in all the units including the printing unit. Is done. That is, since at least each printing unit is driven by an individual motor while maintaining the relationship, the line shaft can be omitted, and since the web transport direction can be changed, all units can be arranged in a predetermined arrangement form. it can. Therefore, there is provided a printing press which has a high degree of freedom with respect to an arrangement form of each unit in the printing press and has extremely small restrictions on installation.

According to a second aspect of the present invention, in the printing press according to the first aspect, the direction changing means is a turn bar. According to the present invention,
The web transport direction is changed by the turn bar. The turn bar has a simple structure, a small installation space, high reliability, and a large change width.

According to a third aspect of the present invention, there is provided the printing press according to the first or second aspect, wherein the unit includes a processing unit that performs processing other than printing on the web. . According to the present invention, processing other than printing can be performed on a web.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to embodiments. One example of the configuration of the printing press of the present invention is shown in FIG. 1 as a top view. In FIG. 1, 1 is a paper feed unit,
2 is an infeed unit, 3a to 3h are first to eighth printing units, 4 is an outfeed unit, 5 is a winding unit, 8a to 8h are first to eighth servomotors, 9a and 9b.
Is the first and second turn bars, and 100 is the web.

As shown in FIG. 1, the gravure printing machine according to the present invention includes a sheet feeding unit 1, an infeed unit 2, first to eighth printing units 3a to 3h, an outfeed unit 4, a winding unit 5, 1st to 8th servo motor 8
a to 8h, first and second turn bars 9a and 9b, and the like. And all these units are arranged on a U-shape on the installation floor. Thereby, the web 100 is also transferred on the U-shape from the upstream to the downstream (when viewed from above).

The web 100 is unwound from the web winding body in the paper feeding unit 1 and reaches the first turn bar 9a via the in-feed unit 2 and the first to fourth printing units 3a to 3d. The first turn bar 9a is a direction changing unit having a function of changing the transfer direction of the web 100. The web 100 has the first turn bar 9a
In, the transfer direction changes 90 degrees counterclockwise.

The web 100 then reaches the second turn bar 9b. The second turn bar 9b is also a direction changing unit having a function of changing the transfer direction of the web 100. The transport direction of the web 100 is further changed by 90 degrees in the second turn bar 9b in the counterclockwise direction.
Eventually, the web 100 becomes the first and second turn bars 9a, 9b.
In, the transfer direction is changed by 180 degrees, and the transfer is performed in a direction opposite to the unwinding direction. The web 100 is the fifth
After passing through the printing units 3e to 3h and the outfeed unit 4, the web is wound in the winding unit 5 to form a web wound body.

As described above, the first and second turn bars 9a, 9
After b, the web 100 is transported in the opposite direction by changing the transport direction by 180 degrees. These first and second turn bars 9a, 9b
Upstream, a paper feed unit 1, an infeed unit 2, which corresponds to a half of the units constituting the printing press,
Four printing units 3a to 3d are arranged. Downstream of the first and second turn bars 9a and 9b, the fifth to eighth printing units 3e to 3h, the outfeed unit 4, and the winding unit 5 corresponding to the remaining half of the units constituting the printing press. Is arranged. Therefore, in the example shown in FIG. 1, the overall length of the printing press is reduced to about 1 / compared to a conventional printing press in which the web is transferred in one direction without changing the transfer direction.
2 can be shortened.

As shown in FIG. 1, the printing press of the present invention does not use a line shaft. The use of line shafts, as already described, is not used in the printing press of the present invention due to placement constraints. However, the operation in each printing unit needs to be an operation that maintains the relevancy without using the line shaft. For example, maintaining the phase angle of the plate cylinder between the printing units at a predetermined phase angle,
It is necessary to correct for fluctuation factors such as disturbance. Next, a sectional drive for performing this will be described.

FIG. 2 is an explanatory view showing an example of the configuration of the driving means of the sectional drive system in the printing press according to the present invention. In FIG. 2, 21 is a motion controller, 22a and 22b are servo drivers, 23a and 23
b is a servo motor, 24a and 24b are pulse generators, and 25a and 25b are first and second plate cylinders. The printing unit in the printing press shown in FIG.
Since there are eight printing units 3a to 3h, there are also eight printing cylinders and eight driving means (eight sets). However, here, for simplicity, two printing cylinders, the first and second printing cylinders 25a are used. , 25b
And only its driving means are shown.

In FIG. 2, the motion controller 2
Reference numeral 1 denotes an apparatus that controls the individual servo drivers 22a and 22b so that the first and second plate cylinders 25a and 25b are associated with each other and operated in a predetermined operation mode. The servo drivers 22a and 22b are
Is a device that controls the driving of the servo motors 23a and 23b under the control of. The servo motors 23a and 23b
Mechanically connected to the first and second plate cylinders 25a and 25b,
These are the motors that drive them.

The pulse generators 24a and 24b detect shaft rotations of the servo motors 23a and 23b and output rotation signals. In the example shown in FIG. 2, the rotation signal is input by the servo drivers 22a and 22b and the motion controller 21. This pulse generator 24
The motion controller 21 monitors the rotation of the servo motors 23a and 23b based on the rotation signals output by the motors a and 24b.

The motion controller 21 determines whether the servo motors 23a and 23b are rotating in a predetermined operation mode based on the rotation signal. Then, if it deviates from the predetermined operation mode beyond the allowable range, a command to correct the rotation of the servo motors 23a and 23b so as to fall within the allowable range is output to the servo drivers 22a and 22b. Thus, the motion controller 21
The first and second plate cylinders 25a and 25b are controlled in a unified manner so as to be operated in a predetermined operation mode in a related manner.

For example, when performing print registration, the motion controller 21 inputs an operation signal output by a register controller (not shown). The operation signal is a signal calculated by the register controller based on a register detection signal output by a register mark detector (not shown) detecting and registering a register mark on the printed matter. The register controller calculates a register error based on the register detection signal,
Further, it calculates and outputs an operation signal for making the register error fall within an allowable range.

The motion controller 21 sets a new phase angle for each of the servo drivers 22a and 22b based on the operation signal. In a printing machine of the sectional drive system, printing registration between printing units is performed by changing a phase angle in plate cylinder rotation. The servo drivers 22a and 22b perform a correction operation based on the new phase angle. Then, the servo motors 23 driven by these servo drivers
The phase angles of the plate cylinders 25a and 25b driven by the servomotors are corrected. This series of operations is repeated, and registration between the printing units is constantly performed during printing.

As described above, the present invention has been described based on the embodiments. However, the present invention is not limited to these embodiments. For example, an example in which the printing units are arranged in two rows has been described. However, in a printing press having a processing unit that performs processing other than printing on a web, the printing units and the processing units may be arranged in two rows and three rows. In an apparatus in which a printing press and a processing machine are connected in-line instead of the printing press alone, the printing press and the processing machine may be arranged in two rows and three rows. In addition, although the U-shaped arrangement is shown, it may be arranged in a zigzag shape, an L shape, an O shape, or another shape.

[0024]

As described above, according to the printing press according to the first aspect of the present invention, there is provided a printing press which has a high degree of freedom with respect to the arrangement form of each unit in the printing press and has extremely small restrictions on installation. . In the printing press according to the second aspect of the present invention, the web transfer direction is changed by the turn bar. According to the printing press of the third aspect of the present invention, it is possible to perform processing other than printing on the web.

[Brief description of the drawings]

FIG. 1 is a top view illustrating an example of a configuration of a printing press according to the present invention.

FIG. 2 is an explanatory diagram showing an example of a configuration of a driving unit of a sectional drive system in the printing press of the present invention.

FIG. 3 is a front view illustrating an example of a configuration of a conventional printing press.

[Brief description of reference numerals]

DESCRIPTION OF SYMBOLS 1 Paper feed unit 2 In feed unit 3a-3h 1st-8th printing unit 4 Out feed unit 5 Winding unit 8a-8h 1st-8th servo motor 9a, 9b 1st, 1st and 2nd turn bar 21 Motion controller 22a, 22b Servo driver 23a, 23b Servo motor 24a, 24b Pulse generator (pulse generato)
r) 25a, 25b First and second plate cylinders 100 Web 101 Paper feed unit 102 In feed unit 103a to 103h First to eighth printing unit 104 Out feed unit 105 Winding unit

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tsutomu Utsumi 1-1-1, Ichigaya-Kagacho, Shinjuku-ku, Tokyo Inside Dai Nippon Printing Co., Ltd. (72) Inventor Akira Kitagawa 1-1-1, Ichigaga-cho, Shinjuku-ku, Tokyo No. 1 Dai Nippon Printing Co., Ltd. F-term (reference) 2C034 AA22 AA42 AB10 AB13 AD18

Claims (3)

[Claims] 1. A driving means for driving at least a printing unit by a sectional drive system, and a direction changing means for changing a web transport direction in order to make a layout form a predetermined layout form in all units including the printing unit. A printing press characterized by having. 2. The printing press according to claim 1, wherein said direction changing means is a turn bar. 3. The printing press according to claim 1, wherein
A printing press, wherein the unit includes a processing unit that performs processing other than printing on a web.