JP2002210922A - Method and apparatus for controlling rotary press - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stabilize the rising at the start time of printing in its early stages by regulating web tension optimum to the width, quality and thickness of printing paper or the position of a compensator, the position of a triangle plate and the position of a turn bar in a short time. SOLUTION: The web tension at a printing regulating speed and a production printing speed, the position of the compensator and the position of the triangle plate are stored along with paper kind data such as paper width, paper quality, paper thickness or the like, and the web tension, the position of the compensator and the position of the triangle plate are made possible to select or calculate only by selecting the paper kind data not only to facilitate the regulation of the printing regulating speed and the production printing speed but also to make it possible to perform control so as to make the web tension always constant and these are regulated to the optimum values in a short time to stable the rising of the printing of the rotary press in its early stages.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention makes it possible to stabilize the start-up time at the start of printing in a rotary printing press.
The present invention relates to a method and an apparatus for controlling a rotary printing press.

[0002]

2. Description of the Related Art Conventionally, in a rotary printing press, compensators as shown by 40 and 41 in FIGS. 2A and 2B for adjusting an intermediate distance for registering printed matter in a web path portion. Rollers are used, and triangular plates, such as 42 and 43, provided for vertically folding the printed web are used. These adjust the cutting position of a compensator roller (not shown) in order to adjust a cutting position of a cutting machine (not shown) provided on the downstream side of FIGS. 2A and 2B. A device and a paper width interlocking position adjusting device that moves the triangular plate to the front / rear position in conjunction with the paper width and makes the apex of the triangular plate the center of the paper width, and a position adjusting device of the turn bar 44 for changing the traveling direction of the web in the horizontal direction. When the position is adjusted and the paper width of the printing paper is input from the input device, the positions of the compensator rollers 40 and 41, the positions of the triangular plates 42 and 43, and the position of the turn bar 44 are independently preset according to the paper width.

The cooling section and the web path section are provided with a device for adjusting the peripheral speed ratio of the drag roller for adjusting the tension of the web, and the compensator position, the triangular plate position, the turn bar position, the peripheral speed ratio of the drag roller are provided. In accordance with the input paper width, the web tension is adjusted to an optimum value while adjusting by the operation of the operator, and the peripheral speed ratio of the drag roller, the compensator position, the triangular plate position, and the turn bar position corresponding to the obtained web tension are adjusted. Was stored for the next print.

If the printing speed changes or the web tension changes during printing, the printing position changes. Therefore, it is necessary to adjust the compensator position in order to match the printing position. This is shown in FIG. A cutoff controller 50 that adjusts the cutting position of such a folding machine detects a register mark or a pattern position printed on the web with a scanning head 51, and detects a web position from the scanning head 51 to a position of a cutting knife 52. Has been adjusted by automatically adjusting the position of the compensator roller 53.

[0005]

However, in practice, not only the paper width of the printing paper, but also if the paper quality changes, the optimal compensator position differs because the amount of elongation of the paper changes even if the paper width is the same. Determining the position of the compensator may cause the paper to be loose or overstretched, causing more waste. Further, when the printing speed changes, the web tension changes as described above, and the amount of elongation of the paper changes, and the printing paper is taken up by rollers due to tack (stickiness of the printing ink), and the cutting position shifts. As described above, the position of the compensator is automatically controlled by the cutoff controller, so that the position of the compensator differs from the preset value. If the compensator position is memorized by the operator operation at this point, it will be different from the optimal compensator position when starting up the printing press, so if this value is used at the next start-up, the paper will be loosened and more waste paper will be used. Cause.

At the start of printing, color tone adjustment and registration are generally performed at a printing adjustment speed lower than the production printing speed, and the web tension, compensator position, triangular plate position, and turn bar position are adjusted accordingly. If the web tension, the compensator position, the triangular plate position, and the turn bar position are set at values corresponding to the above-described production printing speed, the printing paper becomes loose and causes increased waste paper.

Therefore, in the present invention, the optimum web tension, compensator position, triangular plate position, and turn bar position with respect to the paper width, paper quality, and paper thickness of the printing paper are adjusted in a short time so that the rising at the start of printing is stabilized early. The task is to make

[0008]

According to the present invention, paper type information such as paper width, paper thickness, paper quality, adjustment values before shipment from a factory, and values stored in previous printing are produced. A device that is registered in advance in the management device and automatically calculates and determines the web tension value of each part of the printing press and the preset value of the control device for the folding position and the cutting position according to the printing adjustment speed and the production printing speed is provided. These are adjusted in a short time to stabilize the rise at the start of printing at an early stage.

A first aspect of the present invention is a method for controlling a register and a cutting position by adjusting a web tension, a compensator position, a triangular plate position, and the like at the time of startup in a rotary printing press. Control data such as the optimal web tension, compensator position, and triangular plate position determined by paper type data such as paper thickness are stored in pairs as a pair with the paper type data. Or control data corresponding to a paper type similar to the paper type to be used is read out from the storage means, and in the case of control data corresponding to a paper type similar to the paper type to be used, the paper type to be used based on the control data Create control data interpolated to correspond to the data of the above, the web tension with the read control data or the control data created by interpolation Compensator position controls, by adjusting the like triangular plate position controls the register and cutting position, characterized in that to stabilize the rising of the rotary printing press early.

[0010] Further, the control of the web tension is described in claim 2.
As described in the above, the web tension is controlled by a printing speed control device provided for each printing unit in a rotary printing press, a tension control device provided for an infeed section, a cooling section, a web path section, and a drag roller peripheral speed. It is characterized in that it is performed with a ratio adjusting device.

A third aspect of the present invention is an apparatus for implementing the method of the present invention, wherein a printing speed control device provided in each printing unit of a rotary printing press, and an infeed unit, a cooling unit, and a web path unit are provided. Tension control device, a compensator for registering the printed matter, and control data such as web tension, compensator position, and triangular plate position in printing in a control device in a rotary printing press including a triangular plate for folding the printed material, A plurality of pairs are stored in pairs with paper type data such as paper width, paper quality, and paper thickness, and when the paper type data is given, corresponding control data;
Alternatively, a production management device that outputs control data corresponding to the approximate paper type data, and a control that calculates control data corresponding to the paper type to be used from the control data corresponding to the approximate paper type data output by the production management device Comprising a set value calculation device, controlling the printing speed control device and the tension control device provided in each of the printing units by presetting the control data calculated by the control set value calculation device to control the tension to be constant, Further, the present invention is characterized in that a main unit control device for controlling a compensator roller position and a triangular plate position is provided.

By doing so, the paper width, paper quality,
Since paper type data such as paper thickness and control data such as web tension, compensator position, and triangular plate position are given in pairs, accurate control data can be obtained only by giving paper type data, and printing is started. Can be adjusted in a short time, and the occurrence of waste paper can be minimized, so that a great economic effect can be obtained.

The paper type data and control data such as the web tension, compensator position, and triangular plate position in the apparatus invention according to the third aspect of the present invention are, as described in the fourth aspect, the production management apparatus comprising: Control data such as web tension, compensator position, and triangular plate position at adjustment speed and production printing speed
It is characterized by being stored in pairs with paper type data such as paper thickness.

By doing so, it is possible to adjust the printing adjustment speed and the production printing speed in the shortest time, respectively, to minimize the occurrence of waste paper, and to obtain a great economic effect.

[0015]

Embodiments of the present invention will be illustratively described in detail below with reference to the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the components described in this embodiment are not intended to limit the scope of the present invention to them unless otherwise specified. This is just an example.

FIG. 1 is a schematic block diagram of a control device of a shaftless rotary press showing an embodiment of the present invention. In the figure, reference numeral 1 denotes paper type data such as paper width, paper quality, paper thickness, and the like;
Control data such as tension adjustment pattern, compensator position preset value pattern, triangular plate paper width interlocking position preset value pattern, and turn bar position corresponding to the print adjustment speed, production printing speed, etc. Is a production management device that searches for control data corresponding to the control data, or sends close data when there is no identical data to the control set value calculation device 2. The production management device 1 includes an adjustment value of the rotary press before shipment from the factory. , And control data obtained in previous printing.

Reference numeral 2 denotes control data corresponding to the input paper type data, such as a tension pattern, a compensator position preset value pattern, a triangular plate paper width interlocking position preset value pattern, and a turn bar position sent from the production management device. Is not the corresponding data as it is, but if it is an approximate value, the control set value calculation device that calculates the value corresponding to the current job and sends it to the machine control device 3, and 3 is the entire rotary press (machine) This machine control device to control the
Reference numeral 4 denotes an in-feed unit 17 according to an instruction from the control unit 3;
A printing unit-side control device that controls the printing units 20, 21, 22, and 23; a cooling unit 25, a web path unit 28, and a cooling / web path / fold unit control device that controls the folding unit 31;
6, 12 and 14 are drag rollers 18 and 27 for drawing paper,
30 is a driving circuit, 7, 13, 15 are tension detecting circuits for calculating tension values from signals from the tension detecting devices 19, 26, 29, and 8, 9, 10, 11 are printing unit 20, 21, 22, 23 of the printing units. Motor drive circuit, 16
Is a drive circuit for the rollers 32 of the folding section 31, and 24 is a drying section for drying the ink on the printed web.

The printing units 20, 21, 22,
In order to synchronize the rotation of the plate cylinder with the rotation of the plate cylinder, a rotation sensor such as an encoder (not shown) is provided on the plate cylinder or the blanket cylinder. I have to take.

The operation of the rotary press control device thus configured is performed in the following order. First, from the paper type data stored in the production management device 1, paper type data such as paper width, paper quality, and paper thickness that match the current job is acquired. Then, from the target tension table corresponding to the paper type data,
A target tension pattern corresponding to the paper type is selected and sent to the control set value calculation device 2.

At this time, if no tension pattern is found, paper type data that matches the paper quality (paper thickness and weighing) of the current job is obtained from the paper type table, and a target tension pattern that matches this paper type data is obtained. select. If the pattern is still not found, a tension pattern closest to the weighing of the current job is selected, and the selected tension pattern is sent to the control set value calculation device 2. Then, the control set value calculation device 2 performs a linear interpolation according to the paper width × paper thickness for the selected tension pattern, and estimates a target tension value for the current paper width × paper quality. Then, a new target tension pattern is defined for the estimated target tension value, and the target tension pattern is returned to the production management apparatus 1 and registered in correspondence with the paper type data.

Next, the preset value of the compensator position is estimated by the following procedure. First, from the paper type data stored in the production management device 1, paper type data such as paper width, paper quality, and paper thickness that match the current job is acquired. And
From the compensator position preset value table,
A compensator position preset value pattern that matches the paper type data is selected and sent to the control set value calculation device 2.

If the preset value pattern is not found, paper type data that matches the paper quality (paper thickness and weighing) of the current job is obtained from the paper type table, and a compensator position preset value pattern that matches this paper type data. Select If the preset value pattern is still not found, a compensator position preset value pattern closest to the paper width of the current job is selected. Then, the selected compensator position preset value pattern is sent to the control set value calculation device 2, and the control set value calculation device 2 performs linear interpolation based on the compensator position preset value pattern according to the paper width, and compensator for the current paper width. Estimate the position preset value pattern. Then, the estimated new compensator position preset value pattern is returned to the production management device 1 and registered in correspondence with the paper type data.

Next, the preset value of the triangular plate paper width interlocking position is estimated by the following procedure. First, from the paper type data stored in the production management device 1, paper type data such as paper width, paper quality, and paper thickness that match the current job is acquired. And
A paper width preset value pattern matching the paper type data is selected from the paper width interlocking position preset value pattern table of the triangular plate, and sent to the control set value calculation device 2.

At this time, if a preset value pattern is not found, paper type data closest to the paper width of the current job is obtained from the paper type data, and a paper width preset value pattern that matches this paper type data is selected and controlled. It is sent to the set value calculation device 2. Then, the control set value calculation device 2 performs linear interpolation according to the paper width from the obtained paper width preset value pattern, and estimates the paper width preset value pattern for the current paper width. Then, the estimated new paper width preset value pattern is returned to the production management device 1 and registered in correspondence with the paper type data.

When the control data such as the web tension pattern, the compensator position preset value pattern, and the triangular plate position preset value pattern are selected or calculated, the values are sent to the controller 3 of this machine. The respective values are sent from the main controller 3 to the printing unit controller 4 and the cooling / web path / folding unit controller 5 to preset the values, and printing at the printing adjustment speed is started.

First, the web tension is adjusted according to the set web tension pattern by the drag roller 18 of the in-feed unit 17 and the printing units 20, 21, 22, 23.
, The drag roller 27 of the cooling unit 25, the drag roller 30 of the web path unit 28, and the roller 3 of the folding unit 31
2 and the like are driving circuits 6, 8, 9, 10, 11, 12, 1
Drives 4 and 16 are performed in this order. The tension of each part is detected by the sensors of the tension detecting devices 19, 26, and 29. The tension is detected by the tension detecting circuits 7, 13, and 15 as digital or analog detection signals. -Sent to the folding unit control device 5 and compared with a preset tension value. If there is a difference between them, the printing unit-side control device 4 and the cooling / web path / folding unit control device 5 control so as to eliminate the difference.

On the other hand, the compensator position and the triangular plate position are set to calculated positions according to a preset value pattern. Then, test printing is performed at the adjusted web tension, compensator position, and triangular plate position, and the registration and the cutting position of the folding unit 31 are adjusted.
When the color tone, the register, and the cutting position are OK, the web tension, compensator position, and triangular plate position at the time when the OK is output are returned to the production management device 1 as the optimum values for the print adjustment speed of this job, and the paper width, Each value is stored as a pattern corresponding to paper type data such as paper quality and paper thickness.

Thus, the adjustment in the printing adjustment speed is OK.
Then, printing at the production printing speed is started. As for the web tension, compensator position, and triangular plate position at this production printing speed, the values of the previously calculated control data are preset from the machine controller 3 to the printing section controller 4 and the cooling / web path / folder controller 5. And
The printing speed is adjusted so as to become the production printing speed while each part is adjusted to have these values.

That is, as described above, the web tension is applied to the drag roller 18 of the in-feed unit 17 and the printing unit 2 according to the set web tension pattern.
Drive motors 0, 21, 22, and 23; a drag roller 27 of the cooling unit 25; a drag roller 30 of the web path unit 28;
The rollers 32 and the like of the folding section 31 are driven by the driving circuits 6, 8, 9,
In the order of 10, 11, 12, 14, and 16, the printing is driven to a value corresponding to the production printing speed. And the tension of each part,
The detection is performed by the sensors of the tension detecting devices 19, 26, and 29, and the detected signals are detected as digital or analog detection signals by the tension detecting circuits 7, 13, and 15, the printing unit-side control device 4, the cooling / web path / folding unit control device 5. And compared with the preset tension value. If there is a difference between them, the printing unit-side control device 4 and the cooling / web path / folding unit control device 5 control so as to eliminate the difference.

On the other hand, the compensator position and the triangular plate position are set to calculated positions according to a preset value pattern. Production printing is performed at the adjusted web tension, compensator position, and triangular plate position, and the registration and the cutting position of the folding unit 31 are adjusted.
When the color tone, the register, and the cutting position are OK, the control data such as the web tension, compensator position, and triangular plate position at the time when the OK is output are transmitted to the machine control device 3 as optimal values for the production printing speed of this job. It is stored and returned to the production management device 1, and is added to the previously stored pattern of each value at the print adjustment speed and stored.

The production printing is started in this manner. As described above, the web tension at the production printing speed is stored in the main unit controller 3 and is stored in the printing unit side controller 4, the cooling / web path / folding unit controller. 5 is preset to 5, so that the infeed unit 17, the printing units 20, 21, 2
2, 23, cooling section 25, web path section 28, folding section 31
Is always kept constant. Therefore, even if the printing speed changes and the tack amount or the like changes, the tension is kept constant, so that the machine controller 3 determines that the tension has been kept constant as shown in FIG. To the controller 50, this cut-off controller 50
Automatically adjusts the compensator position to always correct the folding and cutting positions correctly.

Further, control data such as web tension, compensator position, and triangular plate position at the printing adjustment speed and the production printing speed are stored in advance in the production management device 1 in pairs with the paper type data. Once determined, optimum values can be selected or calculated by the control set value calculation device 2, and these can be adjusted to optimum values in a short time.

[0033]

According to the present invention as described above, the paper type data such as paper width, paper quality and paper thickness, and the control data such as web tension, compensator position, and triangular plate position are obtained. Since they are given in pairs, accurate control data can be obtained just by giving paper type data,
The adjustment at the time of starting printing can be performed in a short time, and the occurrence of waste paper can be minimized, so that a great economic effect can be obtained.

According to the invention described in claim 4,
Print adjustment speed and production printing speed Control data such as web tension, compensator position, and triangular plate position are stored in pairs with paper type data such as paper width, paper quality, and paper thickness. Can be adjusted in the shortest time, the generation of waste paper can be minimized, and a great economic effect can be obtained.

[Brief description of the drawings]

FIG. 1 is a schematic block diagram illustrating a main configuration according to an embodiment of the present invention.

FIG. 2 is a diagram for explaining a compensator and a triangular plate in the rotary printing press.

FIG. 3 is a diagram for explaining a cutoff controller in a rotary printing press.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Production management apparatus 2 Control setting value calculation apparatus 3 This machine control apparatus 4 Printing section side control apparatus 5 Cooling / web path / folding section control apparatus 6, 12, 14 Drive circuit of drag roller for paper drawing 7, 13, 15 Tension detection Circuit 8, 9, 10, 11, 16 Motor drive circuit 17 In-feed unit 18, 27, 30 Drag roller for paper drawing 19, 26, 29 Tension detector 20, 21, 22, 23 Printing unit 24 Drying unit 25 Cooling unit 28 Web path section 31 Folding section 32 Roller

Continued on the front page (72) Inventor Norifumi Tasaka 5007 Itozakicho, Mihara City, Hiroshima Prefecture Mitsubishi Heavy Industries, Ltd. Paper and Printing Machinery Division F-term (reference) 2C250 EA12 EA18

Claims (4)

[Claims] 1. A method for controlling a register and a cutting position by adjusting a web tension, a compensator position, a triangular plate position, and the like at the time of startup in a rotary printing press. The optimal method is determined by paper type data such as paper width, paper quality, and paper thickness. Control data such as the web tension, compensator position, and triangular plate position are stored in a plurality of pairs in advance in combination with paper type data, and prior to printing, the paper type to be used or paper that is similar to the paper type to be used. The control data corresponding to the paper type is read out from the storage means, and if the control data corresponds to a paper type similar to the paper type to be used, the control data is interpolated based on the control data so as to correspond to the data of the paper type to be used. Create data, control the web tension with the read control data or the control data created by interpolation, and set the compensator position. A method for controlling a rotary printing press, characterized in that the registration and trimming positions are controlled by adjusting the position of the rotary printing press and the position of the triangular plate to stabilize the start-up of the rotary printing press at an early stage. 2. The web tension is controlled by a printing speed control device provided in each printing unit in a rotary printing press, a tension control device provided in an infeed section, a cooling section, and a web path section, and a drag roller peripheral speed ratio. The method for controlling a rotary printing press according to claim 1, wherein the method is performed with an adjusting device. 3. A printing speed control device provided in each printing unit of a rotary printing press, a tension control device provided in an infeed section, a cooling section, and a web path section, a compensator for registering printed matter, and a printed matter. In a control device for a rotary printing press having a folding triangular plate, control data such as web tension, compensator position, and triangular plate position in printing are paired with paper type data such as paper width, paper quality, and paper thickness. A production management device for storing and outputting, when given the paper type data, corresponding control data or control data corresponding to the approximate paper type data; and a similar paper type data output by the production management device. A control setting value calculating device for calculating control data corresponding to the paper type to be used from the corresponding control data. The control unit controls the printing speed control device and the tension control device provided in each of the printing units, presets the control data, controls the tension to be constant, and further controls the compensator roller position and the triangular plate position. A control device for a rotary printing press, characterized by being provided. 4. The production management device transmits control data such as web tension, compensator position, and triangular plate position at a printing adjustment speed and a production printing speed to a paper width, a paper quality, and the like.
4. The control device for a rotary printing press according to claim 3, wherein the control is stored in pairs with paper type data such as paper thickness.