JP2003118084A - Compensator control device for web printer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the processing by a folding machine to be performed at a correct position to a printing position without adjusting the position of a compensator roller after starting the operation of a web printer, with regard to a compensator control device for the web printer. SOLUTION: This web printer is operated to perform a printing process with the help of printing units 21a, 21b, 14a to 14c, while making a web travel and cut the web by a folding machine 15 after adjusting the length of a paper pass line, using the compensator roller 30. In addition, the web printer is equipped with a plurality of paper pass routes R from the printing units 21a, 21b, 14a to 14c to the compensator roller 30 and structured so that the correct position of the compensator roller 30 is set to the paper pass route selected by a position setting means 41 and the set value is corrected by a correction means 42 in compliance with the acceleration and deceleration state of a line velocity, based on a predetermined correction function, and further, the position of the compensator roller 30 is adjusted based on the described correction value.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a web printing machine in which printing is performed in a printing unit while a web is running, and a pass line length is adjusted by a compensator roller to perform a cutting process in a folding machine. The present invention relates to a compensator control device for controlling the position of a compensator roller in a web printing machine having a plurality of paper path routes to the machine.

[0002]

2. Description of the Related Art In a web printing machine for printing continuous paper on a web supplied from a paper roll, such as a web printing machine for printing newspapers (hereinafter referred to as a web printing machine), The printing process is performed by the printing unit, the pass line length is adjusted by the compensator roller, and the cutting process and the folding process are performed by the folding machine.

The reason why the pass line length is adjusted by the compensator roller is to perform cutting processing and folding processing by the folding machine at a position suitable for the printing position of the web processed by the printing unit. A typical example of a web printing machine is a rotary press for newspapers. In this rotary press for newspapers, a shaft drive type, in which a line shaft is driven by a main drive motor and each printing device, a folding machine, and the like are synchronously driven through the line shaft, has become widespread. A shaftless type (also referred to as a shaftless machine) has been developed in which actuating elements such as a device and a folding machine are driven not by a line shaft but by individual electric motors so as to operate in synchronization with each other.

The shaftless rotary press is generally a full shaftless press that does not use a line shaft at all, but an additional shaft in which a shaftless drive printing unit or the like is added to the existing shaft-driven rotary press. Less machine is also being developed. The addition to the existing rotary press is, for example, when it is desired to increase the number of pages of a newspaper or when it is desired that the existing rotary press can make a color printing page even if the existing rotary press cannot perform color printing.

For example, FIG. 5 is a schematic diagram showing an additional shaftless machine. As shown in FIG. 5, the expanded shaftless machine includes an existing shaft-driven rotary press section (existing section) 10 and a shaftless machine section (expansion section) 20 added to this. The existing portion 10 is connected to the line shaft 11, a motor 12 that rotationally drives the line shaft 11, and the line shaft 11 via clutches 13a to 13d, respectively.
It is composed of printing units 14a to 14c and a folding machine 15 which are operated by 1. Here, each of the printing units 14a to 14c is configured as a tower unit that can perform color printing with four colors of cyan, yellow, and magenta in addition to black.

The additional portion 20 includes printing units 21a, 2
1b and a motor 23a for individually rotating and driving each roller (body) 22 of each printing unit 21a, 21b.
23h, an encoder 24 attached to the line shaft 11, and each motor 23a so as to rotate in synchronization with the line shaft 11 based on a detection signal of the encoder 24.
The master controller unit 25 for controlling the operation of 23h to 23h is configured. Here, each of the printing units 21a and 21b is configured as a tower unit that can perform color printing with four colors of cyan, yellow, and magenta in addition to black.

Compensator rollers (compensator position adjusting devices) 30a to 30e are provided in each printing unit 14a.
.About.14c, 21a, 21b are provided along the web path line from the folding machine 15 for each web. Although it is not limited to additional shaftless machines, in the case of newspaper rotary presses, the number of color printing pages and color page positions may change depending on the issue date, and the paper path route (paper threading route) is not one It may be changed depending on the correspondence between the unit and page allocation. That is, the printing units 14a to 14c, 21a,
21b usually has a plurality of threading patterns. In the case of the additional shaftless machine, since the printing unit added to the existing one is provided, the paper path route is likely to be complicated and the paper path line length is likely to be long.

If the compensator position adjustment is not properly performed for each paper path route, a non-defective printed matter such as the NG example shown in FIG. 30a ~
Properly adjust the position of 30e, and OK as shown in FIG.
It is necessary to make it a defective printed matter as in the example. Therefore, conventionally, as shown in FIG. 7, a map or table in which optimum compensator roller positions are associated with respective paper threading routes is stored / stored for each printing unit.
It was managed, and the compensator roller position was preset before the printing machine was started.

As described above, in the case of the additional shaftless machine, the paper path route is complicated and the paper path line length is likely to be long, so that the stricter compensator roller 30 is used.
Position adjustment of a to 30e is required.

[0010]

However, even if the cutting position is once matched by the preset compensator roller position [OK example in FIG. 6 (a)], if the speed is changed by accelerating or decelerating the printing press. As a result, the web position on the folder 15 is displaced due to mechanical influences such as inertia of the guide rollers, resulting in a printed matter as shown in the NG example of FIG. 6B. For this reason, in order not to make waste paper,
During acceleration / deceleration, the operator had to constantly monitor the paper surface and adjust the compensator roller position.

The present invention was devised in view of the above-mentioned problems, and enables processing by a folding machine at an appropriate position with respect to a printing position without adjusting the position of the compensator roller after starting up the printing press. It is an object of the present invention to provide a compensator control device for a web printing machine, which can reduce the occurrence of waste paper.

[0012]

In order to achieve the above object, a compensator control device for a web printing machine according to the present invention (claim 1) is configured such that a web is run in order of a printing unit, a compensator roller and a folding machine. A web printing machine that performs printing processing by the printing unit, adjusts the paper path line length by the compensator roller, and performs cutting processing by the folding machine, which has a plurality of paper path routes from the printing unit to the folding. A compensator control device provided for controlling the position of the compensator roller, comprising a position adjusting mechanism for adjusting the position of the compensator roller, the above-mentioned paper path routes stored in advance, and the optimum compensator roller position for each paper path route. Optimal compensator according to the selected paper path route based on the correspondence relationship of Position setting means for setting an error position, and a correction means for correcting the compensator roller position set by the position setting means according to the acceleration / deceleration state of the line speed based on a preset correction function, It is characterized in that the compensator roller is provided with a control means for controlling the position adjusting mechanism so that the compensator roller is located at the compensator roller position corrected by the correcting means.

When a plurality of the printing units are provided, the above correspondence is stored in advance for each of the printing units, and the position setting means is based on the correspondence between the printing units. The optimum compensator roller position according to the selected paper path route is set for each of the printing units, and the correction function is set in advance for each of the printing units. Based on the correction function of each printing unit, the compensator roller position set by the position setting means is corrected for each printing unit according to the acceleration / deceleration state of the line speed. Item 2).

The correction function comprises an acceleration correction function according to the line speed acceleration state and a deceleration correction function according to the line speed deceleration state, and the acceleration correction function and the deceleration correction function are , Each of which defines a corresponding relationship between a plurality of speed points and a correction amount corresponding to the speed points, and the correction means sets the position setting means with a correction amount corresponding to each time the speed points are passed during acceleration or deceleration. It is preferable to correct the position of the compensator roller set by (Claim 3).

As the correction function, a standard correction function that can be widely applied to each of the above paper path routes, and a special paper path route correction that is applied for a special paper path route that cannot properly correct the compensator roller position by the standard correction function Preferably, a function is set, and the correction means performs the correction using the standard correction function or the special paper path route correction function according to the selected paper path route (claim 4).

The web printing machine is a side-by-side type in which a shaft drive section having a folding machine driven by a line shaft and a shaftless drive section having a printing unit having a printing cylinder driven by a motor are provided side by side. In the case of a shaftless rotary press, it is preferable to apply each of the above configurations (claim 5).

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. FIGS. 1 to 3 show a compensator control device for a web printing machine as one embodiment of the present invention. Is a schematic configuration diagram showing the compensator control device and a web printing machine (combined shaftless rotary press or additional shaftless rotary press), and FIGS. 2 and 3 are diagrams showing correction functions used in the compensator control device. .

As shown in FIG. 1, the webless printing press extension shaftless machine comprises an existing shaft drive type rotary press section (existing section) 10 and a shaftless press section (expansion section) 20 added thereto. It is an expansion shaftless machine. However, the rotary press to which the present invention is applied may be one in which the shaft drive type rotary press part 10 and the shaftless press part are provided side by side (adjacent shaftless press), which is an existing part and which is It does not matter whether it is an additional part.

The existing portion 10 includes a line shaft 11 and
A motor 12 that rotationally drives the line shaft 11,
The line shaft 11 has clutches 13a to 13d, respectively.
The printing units 14a to 14c and the folding machine 15 are connected to each other via the line shaft 11 and are operated by the line shaft 11. The additional portion 20 includes printing units 21a and 21.
b and each roller (body) of each printing unit 21a, 21b
Motors 23a to 23 for individually rotating and driving 22 respectively
h and the encoder 24 attached to the line shaft 11
Based on the detection signal of the encoder 24, each of the motors 23a-2a so as to rotate in synchronization with the line shaft 11.
It is composed of a master controller unit 25 and the like for controlling the operation of 3h.

Here, the printing units 14a to 14c are used.
In addition to black, it is also configured as a tower unit that can perform color printing with four colors of cyan, yellow, and magenta.
In addition to black, each printing unit 21a, 21b
It is configured as a tower unit that can perform color printing with four colors, yellow and magenta. Of course, each of these printing units 14a-14c, 21a, 21b
It is not limited to this. It may be configured as a print spot unit capable of printing with two colors of black and another one color or a print unit capable of printing with only black.

An encoder (also referred to as a line shaft encoder) 24 for position detection for detecting the position (or speed) of a portion that moves according to the rotation of the existing machine is installed in the rotating portion of the existing machine such as the line shaft 11. Then, using the signal data from the encoder 24, a master signal generation device (not shown) of the master controller 25 unit generates a master signal for command values of the motors 23a to 23h, and a position command value generation unit ( (Not shown) generates command values for the motors 23a to 23h according to the master signal to control the motors 23a to 23h.

Each printing unit 14a-14c, 21a,
In the middle of the web path line from 21b to the folder 15, compensator rollers (compensator position adjusting devices) 30a to 30e (reference numeral 30 if not individually distinguished)
Are shown for each web. In the case of a newspaper rotary press, the number of color printing pages and the page position may change depending on the issue date.
14c, 21a, 21b to compensator roller 30
The paper path route (also referred to as a paper threading route or a paper threading pattern) R to (1) is not limited to one type, and is generally changed according to the correspondence relationship between the printing unit used and page layout. Therefore, each printing unit 14a
Usually, a plurality of paper path routes of 14c, 21a, and 21b are provided respectively. In the case of the additional shaftless machine, since the additional printing unit is provided for the existing one, the paper path route is likely to be complicated and the paper path line length is likely to be long.

Since the proper positions of the compensator rollers 30a to 30e differ depending on each paper path route, the positions of the compensator rollers 30a to 30e are adjusted for each printing unit so as to be appropriate for the selected paper path route. There is a need to. Therefore, the position adjusting mechanism 31 for adjusting the position of each compensator roller 30 and the compensator rollers 30a to 30 for each paper path route.
A compensator position adjusting control device 40 is provided which adjusts the position through the position adjusting mechanism 31 so that the position of e becomes appropriate.

The control device 40 has a function (position setting means) 41 for setting an appropriate compensator roller position for the selected paper path route, and a compensator roller position set by the position setting means 41 for applying the line speed. A function (correction means) 42 for correcting according to the deceleration state and a function for outputting a command signal to the position adjusting mechanism 31 so that the compensator roller position corrected by the correction means 42 is obtained [command signal output section (control means)]. 43 is provided.

In the position setting means 41, each of the printing units 14a to 14c, 21 is based on a table (or map) in which the correspondence between each paper path route and the proper compensator roller position for the paper path route is stored in advance.
A proper compensator roller position for the selected paper path route is set for a and 21b. That is,
As shown in FIG. 7, each of the printing units 14a to 14c, 2
Each paper path route (paper threading pattern) for 1a and 21b
And a proper compensator roller position for the paper path route are stored. This correspondence can be calculated in advance based on the path line length of each paper path route that can be grasped from the design stage, or may be set after trial is performed.

In the position setting means 41, each printing unit 1
When the paper path routes 4a to 14c, 21a and 21b are selected, the compensator roller position corresponding to this is set for each printing unit from the stored correspondence. The correcting means 42 corrects the compensator roller position set by the position setting means 41 according to the acceleration / deceleration state of the line speed based on a preset correction function.

Here, as the correction function, as shown in FIG. 2, an acceleration correction function and a deceleration correction function are provided. The correction function for acceleration is the speed point V _UP1 ,
V _UP2 , V _UP3 , ..., V _UPn (where V _UP1 <V _UP2
<V _UP3 <... <V _UPn ) The correction value U of each unit (unit 1 to unit n; if there are five printing units as shown in FIG. 1, unit 1 to unit 5)
1 _UP1 , U1 _UP2 , ..., U2 _UP1 , U2 _UP2 , _.. are defined, and the line speed (web traveling speed) increases, and any speed point V _UP1 , V _UP2 , V _UP3・ ・ ・
· Once passed the V _UPn, in the passage point, compensator roller position of each printing unit, the corresponding correction value _{U1 UP1, U1 UP2, ···,} U2 UP1, U2 UP2, ···
Correct to add.

The deceleration correction function is also configured to correspond to the acceleration correction function, and each speed point V _DW1 , V _DW1 , V
_{DW2, V DW3, ···, V} DWn ( However, V _DW1> V _DW2>
V _DW3> ···> correction value of each unit corresponding to _{V DWn) U1 DW1, U1 DW2} , ···, U2 DW1, U2 DW2, ···
Obtained by defining, either velocity point V line speed (the traveling speed of the web) is decreased _DW1, V _DW2, V _DW3,
After passing V _DWn , the correction values U1 _DW1 , U1 _DW2 , ..., U2 _DW1 , U2 _DW2 , ... corresponding to the compensator roller position of each printing unit at this passing point
・ Correct to add.

Of course, the correction amount is a minute amount,
Further, not only a positive value but also a negative value is set, and the compensator roller position is appropriately subjected to addition correction or subtraction correction according to the acceleration state or the deceleration state. Each of these correction functions accelerates or decelerates the line speed in advance in a general paper path route (a normal path that does not use a bay window, etc., and does not particularly lengthen the paper path line length). You can try while making it possible and set based on the result.

By the way, in the case of a general paper path route, the compensator roller position correction at the time of acceleration or deceleration can be appropriately performed by using the correction function shown in FIG. 2, but the paper path route is complicated. Alternatively, if the paper path line length is longer than the normal length, it may not be possible to appropriately correct the compensator roller position during acceleration or deceleration, even if the correction function shown in FIG. 2 is used.

Therefore, here, in the case of a general paper path route, the correction function (standard correction function) shown in FIG. 2 is applied, and the special paper path route in which the compensator roller position cannot be properly corrected by this standard correction function. In Case of,
A special paper path route correction function as shown in FIG. 3 is used. As shown in FIG. 3, the special paper path route correction function is also provided with an acceleration correction function and a deceleration correction function that define a corresponding correction value from each speed point, like the standard correction function. When the line speed (web running speed) increases or decreases and passes any speed point, correction is performed so that a corresponding correction value is added to the compensator roller position of each printing unit at the time of this passage.

Since the compensator control device of the web printing machine as one embodiment of the present invention is configured as described above, the control device 40 controls each printing unit k (k = k) when controlling the compensator of each printing unit. 1 to
The paper path route selected in 5) is entered after the route is selected, and the line speed is entered in real time.
The target value of the compensator roller position is set based on these input information.

That is, by the position setting means 41, as shown in FIG.
Based on a table (or map) in which the correspondence between each paper path route and the proper compensator roller position for that paper path route is stored in advance, for each printing unit 14a to 14c, 21a, 21b, Set the proper compensator roller position for the selected paper path route.

If the paper path route selected by the correcting means 42 is general, based on the standard correction function as shown in FIG. 2, if the selected paper path route is special, then FIG. The compensator roller position set by the position setting means 41 is corrected according to the corresponding correction function of the special paper path route correction function as shown in FIG. That is, when the line speed (web traveling speed) increases or decreases and passes one of the speed points, correction is performed so that a corresponding correction value is added to the compensator roller position of each printing unit at this passing point. .

Therefore, if the acceleration or deceleration is large, each speed point is passed in a short time, so that corrections are frequently made according to acceleration / deceleration. If the acceleration or deceleration is small, each speed point is taken over time. Therefore, the correction according to the acceleration / deceleration is performed gently. In this way, when the compensator roller position is appropriately corrected by the correcting means 42, the command signal output section (control means) 43 outputs a command signal to the position adjusting mechanism 31 so as to obtain the corrected compensator roller position, Automatically controls the position of the compensator roller.

If the line speed does not change, or if the line speed has changed but has not passed any speed point, the compensator roller position up to that point is retained. In this way, the position of the compensator roller is automatically adjusted properly even when the line speed is accelerated or decelerated.
Prevents misalignment during cutting and folding processing on the folding machine, without the need to monitor the paper surface of the operator or adjust the compensator roller position by the operator based on it.
It is possible to reduce the occurrence of waste paper.

Further, in this adjusting method, since correction is performed without sensing the paper surface, no additional hardware or the like is required, and it is very easy and inexpensive to add a function.
In particular, since the correction function for the special paper path route is provided and the number of patterns of the correction function is expanded, it is possible to eliminate the cutting misalignment over the entire paper passing pattern. In addition, by appropriately spacing the speed points, for example, the movement of the compensator when the printer is continuously accelerated can be made to move continuously instead of moving intermittently. It is possible to minimize tension fluctuations during compensator operation and prevent problems such as duplication.

By the way, in the case of the side-by-side shaftless rotary press, the motors 2 of the additional printing units 21a and 21b are added.
Control of 3a to 23h is a master signal generated by a master controller 25 unit using signal data from an encoder (also referred to as a line shaft encoder) 24 for position detection installed in a rotating portion of an existing machine such as the line shaft 11. Done by

Each printing unit 21a, 21b and folding machine 15
Since the distance between and is different, the number of guide rollers and the like is also different. The cutting misalignment also occurs due to these mechanical configuration differences. Therefore, as shown in FIG. 4, a cutting circuit that corrects a cutting deviation corresponding to the above-mentioned mechanical configuration difference in the signal circuit to each printing unit generated by the master signal generation unit (master data generation unit) 25a. Correction unit 25b
It is also effective to intervene and correct the command values of the respective motors 23a to 23h so as to compensate for the cutting deviation caused by the difference in mechanical configuration.

In FIG. 4, in each trimming correction section 25b,
Although a single linear function is representatively described, in practice, it is preferable to manage a plurality of arbitrary functions other than the linear function and automatically select and use the pattern according to the printing pattern (paper passing pattern). Although the embodiment of the present invention has been described above, the present invention is not limited to the embodiment, and various modifications can be made without departing from the spirit of the present invention.

For example, since the optimum correction value during acceleration / deceleration may differ depending on the combination of the paper passing patterns (paper path lines) of each printing unit, a special paper path route correction function as shown in FIG. 3 is used. The combination of paper path lines may be set, and when such a combination of paper path lines is selected, correction during acceleration / deceleration may be performed using this special paper path route correction function.

The compensator control device of the present invention has a great effect by being applied to the side-by-side shaftless rotary press, but is widely applicable not only to the side-by-side shaftless rotary press but also to a web printing machine.

[0043]

As described in detail above, according to the compensator control device (claim 1) of the web printing machine of the present invention,
The proper compensator roller position for the paper path route set by the position setting means is corrected by the correcting means in accordance with the acceleration / deceleration state of the line speed, and by the control means,
The position adjustment mechanism that adjusts the position of the compensator roller is controlled so that the compensator roller is located at the compensator roller position corrected by the correction means. The position of the compensator roller is properly adjusted without the need for monitoring or the adjustment of the compensator roller position based on it, and it is possible to prevent misalignment during cutting processing by the folding machine and reduce the occurrence of waste paper.

When a plurality of the printing units are provided, the above correspondence is stored in advance for each of the printing units, and the position setting means, based on the correspondence between the printing units, The optimum compensator roller position according to the selected paper path route is set for each of the printing units, and the correction function is set in advance for each of the printing units. If the compensator roller position set by the position setting means is corrected according to the acceleration / deceleration state of the line speed based on the correction function of each printing unit, For each printing unit, without relying on the work of the operator, misalignment at the folding machine is prevented when the line speed is accelerated or decelerated, and the waste paper is lost. It is possible to reduce generation (claim 2).

The correction function comprises an acceleration correction function according to the line speed acceleration state and a deceleration correction function according to the line speed deceleration state. The acceleration correction function and the deceleration correction function are , Each of which defines a corresponding relationship between a plurality of speed points and a correction amount corresponding to the speed points, and the correction means sets the position setting means with a correction amount corresponding to each time the speed points are passed during acceleration or deceleration. If the compensator roller position set by is corrected, the compensator roller position can be easily adjusted according to the acceleration / deceleration of the line speed (claim 3).

As the correction function, a standard correction function that can be widely applied to each of the above paper path routes and a special paper path route correction that is applied for a special paper path route that cannot properly correct the compensator roller position by the standard correction function If a function is set and the correction means performs the correction using the standard correction function or the correction function for the special paper path route according to the selected paper path route, the correction is appropriately performed for various paper path routes. Therefore, the occurrence of waste paper can be more reliably reduced (claim 4).

The web printing machine has a shaft drive portion provided with a folder driven by a line shaft and a shaftless drive portion provided with a printing unit having a printing cylinder driven by a motor. In the case of a shaftless rotary press, the above paper path route tends to be complicated, but if each of the above compensator control devices is applied to such a side-by-side shaftless rotary press, for a complicated paper path route, The compensator roller can be adjusted to an appropriate position including the time of accelerating and decelerating the line speed, and a paper loss reduction effect can be obtained (claim 5).

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram illustrating a compensator control device according to an embodiment of the present invention and a web printing machine (adjacent shaftless rotary press) including the control device.

FIG. 2 is a diagram showing a correction function used in a compensator control device of a web printing machine as an embodiment of the present invention.

FIG. 3 is a diagram showing a correction function used in a compensator control device of a web printing machine as an embodiment of the present invention.

FIG. 4 is a block diagram showing a control device of a printing unit attached to the web printing machine according to the embodiment of the present invention.

FIG. 5 is a schematic configuration diagram showing a conventional web printing machine (combined shaftless rotary press).

FIG. 6 is a schematic front view showing an example of a cut printed material, in which (a) shows a good product and (b) shows a defective product.

FIG. 7 is a diagram showing a position setting map used in a compensator control device of a conventional web printing machine.

[Explanation of symbols]

10 Shaft driven rotary press part (existing part) 11 Line shaft 12 Motors 13a to 13d Clutch 14a to 14c Printing unit 15 Folding machine 20 Shaftless machine part (additional part) 21a, 21b Printing unit 22 Roller (body) 23a to 23h Motor 24 Encoder 25 Master controller 25a Master signal generation unit (master data generation unit) 25b Cutting correction unit 30, 30a to 30e Compensator roller (Compensator position adjusting device) 31 Position adjusting mechanism 40 Control device 41 Position setting means 42 Correcting means 43 Command Signal output unit (control means)

Continued front page    F term (reference) 2C034 AD08                 2C250 EA34                 3F105 AA01 AB03 BA02 BA12 CA15                       DA04 DA09

Claims (5)

[Claims] 1. A web printing machine in which printing is performed by the printing unit while the web is running in the order of a printing unit, a compensator roller, and a folding machine, and a paper path line length is adjusted by the compensator roller to perform a cutting process by the folding machine. A compensator control device for controlling the position of the compensator roller, which is provided in a plurality of paper path routes from the printing unit to the folding machine, and is a position adjusting mechanism for adjusting the position of the compensator roller. And a position setting means for setting an appropriate compensator roller position for the selected paper path route based on the correspondence relationship between each of the above-described paper path routes and the appropriate compensator roller position for each paper path route. , Set by the position setting means based on a preset correction function Correction means for correcting the compensated compensator roller position in accordance with the acceleration / deceleration state of the line speed, and control means for controlling the position adjusting mechanism so that the compensator roller becomes the compensated roller position corrected by the compensation means. A compensator control device for a web printing machine, characterized in that 2. A plurality of the printing units are provided, and the above-mentioned correspondence relation is stored in advance for each of the above-mentioned printing units, and the position setting means is based on the correspondence relation between the above-mentioned respective printing units. The optimum compensator roller position according to the selected paper path route is set for each of the printing units, and the correction function is set in advance for each of the printing units. The compensator roller position set by the position setting means is corrected according to the acceleration / deceleration state of the line speed for each of the printing units based on the correction function of the printing unit. Item 1. A compensator control device for a web printing machine according to Item 1. 3. The correction function comprises an acceleration correction function according to the line speed acceleration state and a deceleration correction function according to the line speed deceleration state, and the acceleration correction function and the deceleration correction function. The function defines a correspondence relationship between each of the plurality of speed points and a correction amount corresponding to the speed point, and the correction means uses the correction amount corresponding to each position when passing through the speed point during acceleration or deceleration. The compensator control device for a web printing machine according to claim 1, wherein the compensator roller position set by the setting means is corrected. 4. A standard correction function that can be widely applied to each of the above paper path routes as the correction function, and a special paper path route that is applied for a special paper path route for which the standard correction function cannot appropriately correct the compensator roller position. 4. The web according to claim 3, wherein a correction function is set, and the correction means performs the correction using the standard correction function or the special paper path route correction function according to the selected paper path route. Compensator control device for printing press. 5. The web printing machine is provided with a shaft drive section having a folder driven by a line shaft and a shaftless drive section provided with a printing unit having a printing cylinder driven by a motor. The compensator control device for a web printing machine according to claim 1, wherein the compensator control device is a side-by-side shaftless rotary press.