JP3053136B2 - Register preset method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gravure printing machine for adjusting the vertical registration of each color (hereinafter referred to as register adjustment) of a gravure multicolor printing machine by moving a compensator roller provided between printing units. it relates to the registration preset how the printing press.

[0002]

2. Description of the Related Art In gravure printing or the like, the pitch of a printed material is determined by the circumference of a printing cylinder used, and the circumference of the printing cylinder varies greatly depending on the type of printed material. Therefore, when the plate cylinder circumference changes, it is necessary to adjust the vertical register before printing. Generally, a compensator roller for adjusting a web path is provided between printing units of a printing press.

FIG. 9 is a block diagram showing a conventional example of a register preset device (Japanese Patent Laid-Open No. 1-99846).
FIG. 4 is a side view showing a compensator roller of a register preset device according to a conventional example. The storage device (fixed data storage means) 22 stores the paper path between the plate cylinders, the initial position of the register adjustment mark printing section of each plate cylinder, and the interval between the register adjustment marks to be printed on the traveling paper. I have.

When data relating to the circumference of the plate cylinder is input from a console (reference data input means) 21, a computer (drive shaft phase calculation) is calculated based on the data from the console 21 and the data stored in the storage device 22. Means 3a) 3 calculates the phase of each plate cylinder when the register adjustment mark of each plate cylinder printed on the traveling paper passes through the scanning head 6, and determines a desired phase based on the calculated phase data of each plate cylinder. Scanning head 6
The timing for generating the gate signal to be detected by the register adjustment device 5 is set.

Further, a computer (compensator roller position calculating means 3b) 3 calculates a position of the compensator roller which coincides with the interval between the register adjustment marks stored in the storage device 22, and outputs the position from the compensator roller position calculating means 3b. A compensator roller position presetting device 7 for moving the position of a compensator roller disposed between the plate cylinders based on the data (compensator roller driving circuit 8, encoder 13, motor 1
4) the moving amount of the compensator roller is set.

After that, the register adjusting device 5 detects the register adjusting mark of each plate cylinder printed on the traveling paper W by the scanning head 6 using the gate signal set by the gate position setting device 4. As shown in FIG.
Register adjustment marks 15a, 15 such as 0a, 10b,.
b,... are printed at regular intervals.
The positions of the compensator rollers 12a,... arranged between a, 10b,.

The register adjustment marks 15a, 15b, etc. of the plate cylinders 10a, 10b,... Are aligned in the same phase in all the printing units, and the web path length between the units is nL + d or nL-d. The positions of the compensator rollers 12a,... Were calculated and set so that the circumference of the torso d: the distance between adjacent register adjustment marks n: a positive integer.

At this time, as the initial adjustment of the register adjusting device, when the plate cylinders 10a, 10b,... Of each color are attached to each printing unit (not shown), the register adjusting marks 15a, 15b,. For each printing unit,
The phase is adjusted to the same position.

As described below, conventionally, such initial adjustment of the plate cylinder is carried out by using a level 91 or a pointer 93.
Was used to perform alignment. When the level 91 is used, for example, as shown in FIG. 11, the alignment mark 90 a provided on the alignment tool 90 is aligned with a reference position (such as the register adjustment mark 15) of the plate cylinder 10. The phase in the circumferential direction is adjusted so that the level 91 arranged perpendicular to the plane including the axis of the body points horizontally. In addition, the pointer 9
When using No. 3, a detachable support rod is attached to a part of the machine frame 61 of the printing press as shown in FIG.
The phase in the circumferential direction and the position in the lateral direction are determined so that the reference position of the plate cylinder 10 matches the arrow-shaped portion at the tip of the pointer 93 attached to the support bar.

[0010]

However, it is time-consuming and operable to perform positioning using a level or an indicator as described above. In addition, if positioning is performed by eye measurement at the expense of accuracy, registration at the time of printing is not performed, and time is required for adjustment. In addition, horizontal positioning cannot be performed with a level, and the pointing needle has poor operability and is difficult to adjust. in this way,
It was difficult to match the register adjustment mark on the plate cylinder to the specified position.

An object of the present invention is to solve the problems described above, eliminates the need for work to adjust the reference position of the plate cylinder, automatically subjecting Hisage <br/> register preset how a which can perform register presets It is.

[0012]

In order to solve the above-mentioned problems, a register presetting method according to the present invention is directed to a gravure printing press in which vertical registration of a printed material is adjusted by moving a compensator roller disposed between printing units. In the register preset method, the plate mark provided on the printing plate is detected to detect the circumferential phase and the lateral position of the plate cylinder, and based on the detection result, the registration of each plate cylinder is performed.
Between the plate cylinders where the adjustment marks are printed at regular intervals
Calculate the position of the compensator roller
Of the compensator roller based on the calculation result of
After setting, the axis of each plate cylinder is
Calculate the side lay position so that the position in the direction matches,
Based on the calculation result, the preset
The compensator roller and side tray position
After presetting the position,
Each scanning cylinder has a scanning head printed on running paper.
Gate position required to detect the register adjustment mark
The gate position based on the calculation result.
It is configured to carry out the cut .

[0013]

[0014]

According to the present invention, the circumferential phase and the axial position of the printing plate are detected by automatically detecting the plate mark provided on the printing plate, and the scanning head is operated based on the detection result. Gate positions required to detect the registration marks of each plate cylinder printed on the running paper, compensator rollers arranged between the plate cylinders so that the registration marks of each plate cylinder are printed at regular intervals And the side lay position where the axial position of each plate cylinder coincides,
Preset can be performed based on the calculation result.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings and the like. FIG. 1 is a block diagram showing an embodiment of a register preset device according to the present invention, and FIG.
FIG. 2 is a configuration diagram showing a relationship between the apparatus shown in FIG. Note that the same reference numerals are given to portions that perform the same functions as the above-described conventional example.

The drive shaft phase detector 1 is connected to a rotation shaft 52 of the plate cylinder 10 via a gear box 51.
This is for detecting the phase of the zero driving shaft 50a.
The rotation of the prime mover 50 is controlled by the main controller 53. The drive shaft phase reading device 2 includes a drive shaft phase detector 1
Is a device that reads the phase of the driving shaft 50a detected and supplies phase data of the driving shaft 50a to the preset personal computer 3, the register adjustment device 5, and the mark determination computer 82, which will be described later.

The preset personal computer 3 receives the circumferential phase of the plate cylinder from the driving shaft phase reading device 2, a mark detection signal from a mark determination computer 82 described later, and the lateral feed amount from the cell detector lateral feed amount reading device 88. A gate position necessary for the scanning head 6 to detect the register adjustment mark of each plate cylinder printed on the traveling paper W based on the data;
The position of the compensator roller 12 arranged between the plate cylinders such that the register adjustment marks of each plate cylinder are printed at a fixed interval, and the side lay position where the axial position of each plate cylinder coincides are calculated. The gate position setting device 4 outputs gate position data, the compensator roller position preset device 7 outputs compensator roller preset position data, and the sideley position preset device 47 outputs sidelay preset position data. The preset personal computer 3 outputs plate cylinder circumference data to the mark determination computer 82 and outputs a signal for controlling the prime mover 50 to the machine controller 53.

The gate position setting device 4 determines the timing at which the register adjustment device 5 generates a gate signal for detecting only a desired register adjustment mark by the scanning head 6 based on a preset control signal from the preset personal computer 3. The device to be set.

The register adjusting device 5 processes the signal of the register adjusting mark of each color inputted from the scanning head 6 based on the data from the driving shaft phase reading device 2 and the gate position setting device 4, The compensator roller driving circuit 8 detects the register adjustment mark of each color printed on the traveling paper W at a predetermined timing.
And a device for controlling the side-lay drive circuit 48.

The compensator roller position presetting device 7 is based on data from the preset personal computer 3.
This is a device for presetting the position of each compensator roller 12a, 12b, 12c in the compensator roller drive circuit 8. The compensator roller drive circuit 8 rotates each of the motors 14a to 14c connected to each of the compensator rollers 12a to 12c based on a signal from the register adjusting device 5 or the compensator roller position presetting device 7, and rotates each of the compensator rollers 12a to 12c. 12c. Then, each motor 14a, 14
The amount of rotation of b and 14c, that is, the amount of movement of each compensator roller is determined by the compensator roller position detectors 13a and 13c.
13b, 13c, are read by the compensator roller position reading device 9 and fed back to the compensator roller drive circuit 8, and when each of the compensator rollers 12a, 12b, 12c moves by a predetermined amount, each motor 14a, 14b, 14c The rotation is stopped.

The side lay is for moving the plate cylinder 10 at right angles to the direction of the flow of the traveling paper W to adjust the lateral register of the printed matter. Side-lay position detector 45
Is a sensor for detecting the side lay position of the plate cylinder 10, and its output is connected to the side lay position reading device 46. The side-lay position preset device 47 is a device that presets the side-lay position in the side-lay drive circuit 48 based on data from the preset personal computer 3. The side lay drive circuit 48 is a device that rotates the motor 44 connected to the side lay based on a signal from the register adjustment device 5 or the side lay position preset device 47 to move the side lay. The rotation amount of the motor 44, that is, the movement amount of the side lay is detected by the side lay position detector 45, read by the side lay position reading device 46, fed back to the side lay drive circuit 48, and when the side lay moves by a predetermined amount, The motor 44 stops rotating.

The cell detector 81 is for detecting the register adjustment mark 15 on the plate cylinder 10, and its output is
It is connected to a mark discriminating computer 82. The plate cylinder detector 83 is a sensor for detecting the presence or absence of the plate cylinder 10, and its output is output to the cell detector moving device 84. The control signal from the preset personal computer 3 is input to the cell detector moving device 84, and the cell detector forward / backward actuator 85 for moving the cell detector 81 in the forward / backward direction and the cell detection for laterally moving the cell detector 81. This is a device for driving the container lateral feed actuator 86. The cell detector traverse actuator 86 includes the cell detector 8
Cell detector for detecting the horizontal feed amount of 1 Lateral feed amount detector 87
The output of which is connected to a cell detector lateral feed amount reading device 88. The output of the cell detector lateral feed amount reading device 88 is connected to the preset personal computer 3.

FIG. 3 is a perspective view showing the structure near the plate cylinder. In the machine frames 61, 61 to which the plate cylinder 10 is fixed,
A rail 62 is provided parallel to the rotation axis of the plate cylinder 10, and the scanning head 6 is provided on the rail 62. The machine frames 61 and 61 are provided with rails 64 parallel to the rotation axis of the plate cylinder 10, and the rails 64 are provided with cell detector moving devices 84.
In the cell detector moving device 84, a moving shaft 84a is provided so as to be movable in a direction perpendicular to the rotation axis of the plate cylinder 10, and a cell detector 81 such as a photoelectric sensor is attached to the tip of the moving shaft 84a. Have been.

Next, the operation of the embodiment of the register preset device according to the present invention will be described with reference to FIG. A preset operation is started by inputting a preset start from the console 21 of the preset personal computer 3 (S).
101). First, detection is performed for the first printing unit (S102). In most of the printing plates, the register adjustment mark 15 is set at the end of the web W, so that the cell detector moving device is used as shown in FIG. 84 (S10).
3) The cell detector moving device 84 is moved at a high speed from the outside of the web W to a predetermined position (for example, about 3 cm outside the web W) to reduce the time.

Next, the cell detector 81 moves the moving shaft 84a of the moving device 84 so that the cells on the printing plate of FIG. 4B can be read close to each other (S105).
When W1 detects the plate cylinder 10, it stops (S10).
6). Next, the plate cylinder 10 is rotated at a high speed (about 150 rpm) (S107), and as shown in FIG. 4C, the cell detector moving device 84 is slowly (about 15 mm / min) laterally fed (S108). The detection of the register adjustment mark 15 is started, and pattern matching of the register adjustment mark 15 is performed based on a known mark detection algorithm.

When the register adjustment mark 15 is detected (S10
9) For the side-lay preset, the lateral position data of the register adjustment mark 15 is sent to the preset personal computer 3 (S110). For compensator roller presets and gate presets, register adjustment marks 15
To the preset personal computer 3 (S
111). Thereafter, the movement of the cell detector moving device 84 is stopped (S112), and the cell detector 81 is evacuated to a safe place. Further, when the register adjustment marks 15a to 15d of all the plate cylinders 10a to 10d are detected (S113, S11).
4), the rotation of the plate cylinder 10 is stopped (S115). Next, a side-lay preset (S116), a compensator roller preset (S117), and a gate preset (S118) are sequentially performed, and the preset ends. In this embodiment, the registration adjustment marks 15 are sequentially detected one unit at a time. However, in order to shorten the detection time, one mark determination computer 82 is prepared for each unit, and all units are used. At the same time register adjustment mark 1
5 may be detected.

The side lay preset (S116) calculates and sets the side lay position from the lateral position data of the detected register adjustment mark 15, the paper width of the running paper W and its lateral position. That is, as shown in FIG. 6, b: the distance from the reference position to the register adjustment mark of the plate cylinder c: the distance from the reference position to the center line of the traveling paper d: the distance between the adjacent registration adjustment marks w: the traveling paper Paper width α: Assuming the distance (margin) from the edge of the traveling paper to the register adjustment mark, to print the register adjustment mark at a position of a distance from the edge of the traveling paper, b = c−w / 2 + α (( 1) The position of the side lay may be set so that. Therefore, the position of the side lay when the plate cylinder 10 is attached is x
₀ , if the position of the detected register adjustment mark 15 is bi,
The position of the side lay to be obtained is x = x ₀ −bi + c−w / 2 + α .

Compensator roller preset (S11)
7) From the detected circumferential phase data of the register adjustment mark 15 and the circumferential data of the plate cylinder, the distance of the running paper between the units for registering is obtained, and then the position of the compensator roller is calculated and set. I do. That is, as shown in FIG. 7A, θi: the phase of the register adjustment mark of the plate cylinder attached to the i-th unit L: the circumference of the plate cylinder r: the radius of the plate cylinder (= L / 2π) d: Interval between adjacent register adjustment marks Ti: Distance of running paper from printing point Pi- ₁ to Pi Mi: Printing point when compensator roller is at origin
Assuming the distance between Pi- _{1 and} Pi, in order to register the adjacent units, Ti = nL + d + r (θi− ₁₋ θi) (2) or Ti = nL−d + r (θi− ₁₋ θi) (3) The position of the compensator roller may be set so that Which of the formulas (2) and (3) is used depends on how the register adjustment marks are arranged. That is,
As shown in FIG. 7B, when the flow direction of the printing paper is opposite to the alignment method of the register adjustment marks, the flow direction of the printing paper matches the alignment method of the register adjustment marks using Expression (2). In this case, equation (3) is used.

By the way, the distance Ti between the printing points Pi- _{1 to} Pi is
But the position of the compensator roller as an integral multiple of the circumference L of the plate _{cylinder, y 0 = (nL-M} ) / 2 ... (4) provided that n = INT [M / L] +1 (INT (X) Is the largest integer not exceeding X). Accordingly, the position of the compensator roller for satisfying the (2) or (3) _{is, y = y 0 + (r} (θi- 1 -θi) + d) / 2 ... (5) or y = y ₀ + (r (Θi− ₁₋ θi) −d) / 2 (6)

In this embodiment, the register adjustment mark is detected and the register preset is performed. However, another mark (for example, a register mark) capable of detecting the phase may be used. In addition, a reading mark dedicated to register presetting or for other purposes, which facilitates phase detection, may be provided on the plate cylinder. When d = 0 in the above equation when the register mark is used, the register preset can be performed in the same manner as in this embodiment.

The gate preset (S118) calculates and sets the gate position from the detected circumferential phase data of the register adjustment mark 15, the circumferential data of the plate cylinder, and the distance from the printing point to the scanning head. That is, FIG.
As shown in, [theta] g: gate phase θo to be determined: the driving shaft of the initial phase theta _1: plate cylinder registration adjustment marks on the plate cylinder when mounted the phase theta: printed on the traveling sheet the register adjustment marks Phase of the plate cylinder with respect to the reference point Q when passing through the scanning head L: circumference of the plate cylinder r: radius of the plate cylinder (= L / 2π) z: rotation ratio between the driving shaft and the plate cylinder D: printing point P Θ ₁ + θ = D / r (7) Accordingly, the phase θg of the gate to be obtained (ie, the phase of the driving shaft when the printed register adjustment mark passes through the scanning head) ) is a θg = θo + z θ = θo + z ((D / r) -θ 1) ... (8).

[0032]

As described in detail above, according to the present invention, register presetting can be automatically performed without performing the operation of adjusting the reference position of the plate cylinder as in the prior art, and the printing can be performed at the time of printing. Loss of running paper and time required for adjustment can be reduced.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a register preset device according to the present invention.

FIG. 2 is a configuration diagram illustrating a relationship between the apparatus illustrated in FIG. 1 and a printing press.

FIG. 3 is a perspective view showing a structure near a plate cylinder of the printing press shown in FIG. 2;

FIG. 4 is a schematic diagram for explaining an operation of the register preset device according to the embodiment.

FIG. 5 is a flowchart illustrating an operation of the register preset device according to the embodiment;

FIG. 6 is a diagram illustrating a preset operation of a side lay position.

FIG. 7 is a diagram illustrating a preset operation of a compensator roller position.

FIG. 8 is a diagram illustrating a preset operation of a gate position.

FIG. 9 is a block diagram showing a conventional example of a register preset device.

FIG. 10 is a side view showing a compensator roller of the conventional register preset device.

FIG. 11 is a perspective view for explaining a conventional initial adjustment method.

FIG. 12 is a perspective view for explaining a conventional initial adjustment method.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 drive shaft phase detector 2 drive shaft phase reading device 3 preset personal computer 4 gate position setting device 5 register adjustment device 6 scanning head 7 compensator roller position preset device 8 compensator roller drive circuit 9 compensator roller position reading device 10 plate cylinder 12 compensator roller 13 Compensator Roller Position Detector 44 Side Ray Actuator 45 Side Lay Position Detector 46 Side Lay Position Reading Device 47 Side Lay Position Preset Device 48 Side Lay Driving Circuit 50 Prime Motor 51 Gabox 52 Rotary Axis 53 Main Unit Controller 81 Cell Detector 82 Cell Detector 82 Mark Discrimination 82 Computer 83 Plate cylinder detector 84 Cell detector moving device 85 Cell detector forward / backward actuator 86 Cell detector lateral feed actuator 87 Cell detector lateral feed Amount detector 88 Cell detector lateral feed amount reading device

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B41F 33/14 B41F 33/06

Claims (1)

(57) [Claims] In a register preset method of a gravure printing machine for adjusting a vertical register of a printed material by moving a compensator roller arranged between printing units, a plate mark provided on a printing plate is detected. The circumferential phase and the lateral position of the plate cylinder are detected, and based on the detection result, the register adjustment mark of each plate cylinder is
Coins placed between plate cylinders so that they are printed at regular intervals
Calculate the position of the compensator roller and calculate the position
Then, the compensator roller is preset, and based on the detection result, the axial position of each plate cylinder is determined.
Calculate the side lay position that matches
Based on this, presetting the side lay position is performed, and the presetting of the compensator roller and side lay position is performed.
After performing the cut, the scan is performed based on the detection result.
Registration adjustment of each plate cylinder with running head printed on running paper
Calculate the gate position required to detect the mark, and
Preset the gate position based on the calculation result.
Cormorants, register presets wherein the.