JP5498349B2 - Contact pressure adjusting method and contact pressure adjusting device for intaglio printing press - Google Patents

Description

  The present invention relates to a contact pressure adjusting method and a contact pressure adjusting device for an intaglio printing press.

  The wiping device of an intaglio printing press generates a nip by pressing a wiping roll against the intaglio plate surface mounted on the intaglio cylinder, and rotates it in the opposite direction to the intaglio cylinder to remove excess ink in the non-image area on the plate surface. Although scraping, every time a new print job is started, the operator visually confirms the plate surface while printing and adjusts the contact pressure of the wiping roll. There is a first problem that printing materials such as these are wasted.

  In addition, since the surface of the wiping roll of the wiping device is made of resin or rubber, the contact pressure against the intaglio cylinder changes due to wear due to use or expansion due to heat during use. .

  Therefore, the applicant previously described in Patent Document 1 presses the wiping roll against the intaglio cylinder so that the load (current value) of the wiping roll drive motor becomes the reference load (reference current value) during normal printing. Although it was proposed to control the motor that adjusts the contact pressure, even if the load (current value) of the wiping roll drive motor is controlled to become the reference load (reference current value), the surface temperature of the wiping roll and There is a second problem in that the contact pressure of the wiping roll with respect to the intaglio cylinder changes depending on the room temperature (or printing time instead of temperature).

Japanese Patent Application No. 2010-128572

  Therefore, the present invention provides an optimum load for the wiping roll drive motor (reference current value) according to the type of ink, the type of substrate, the type of pattern, the material of the wiping roll, the surface temperature of the wiping roll and the room temperature. A motor that adjusts the contact pressure by pressing the wiping roll against the intaglio cylinder so that the load (current value) of the wiping roll drive motor becomes the optimum load (reference current value) during printing. By controlling, the first problem was solved.

  Also, the reference load (reference current value) of the wiping roll drive motor during printing is corrected according to the surface temperature of the wiping roll and the room temperature (or printing time instead of temperature), and the load of the wiping roll drive motor is corrected. The second problem was solved by controlling the motor that adjusts the contact pressure by pressing the wiping roll against the intaglio cylinder so that the (current value) becomes the corrected reference load (reference current value).

The method for adjusting the contact pressure of an intaglio printing press to solve the above problems is as follows:
An intaglio supported on an intaglio cylinder rotatably supported;
A wiping roll that contacts the intaglio and is rotatably supported;
A wiping roll drive motor for rotationally driving the wiping roll;
A contact pressure adjusting mechanism for adjusting a contact pressure of the wiping roll with respect to the intaglio;
A contact pressure adjusting motor for driving the contact pressure adjusting mechanism;
In an intaglio printing press with a contact pressure adjustment method,
Set the printing conditions,
According to the set printing conditions, a reference load of the wiping / roll driving motor is obtained,
Driving the contact pressure adjusting motor during printing so that the load of the wiping roll driving motor is equal to the reference load;
It is characterized by.

Also,
The printing conditions are ink types.

Also,
The printing condition is a type of a substrate to be printed.

Also,
The printing condition is a pattern type.

Also,
The printing conditions are a surface temperature of a wiping roll and a room temperature.

Also,
During printing, it detects the surface temperature and room temperature of the wiping roll,
According to the detected surface temperature and room temperature of the wiping roll, the reference load of the wiping roll driving motor is corrected,
Driving the contact pressure adjusting motor so that the load of the wiping roll driving motor is equal to the corrected reference load during printing;
It is characterized by.

The contact pressure adjusting device of the intaglio printing press for solving the above problem is
An intaglio supported on an intaglio cylinder rotatably supported;
A wiping roll that contacts the intaglio and is rotatably supported;
A wiping roll drive motor for rotationally driving the wiping roll;
A contact pressure adjusting mechanism for adjusting a contact pressure of the wiping roll with respect to the intaglio;
A contact pressure adjusting motor for driving the contact pressure adjusting mechanism;
In an intaglio printing press with a contact pressure adjusting device,
Set the printing conditions, determine the reference load of the wiping / roll driving motor according to the set printing conditions, and during printing, the load of the wiping / roll driving motor becomes equal to the reference load. Providing a control device for driving and controlling the contact pressure adjusting motor;
It is characterized by.

Also,
The printing conditions are ink types.

Also,
The printing condition is a type of a substrate to be printed.

Also,
The printing condition is a pattern type.

Also,
The printing conditions are a surface temperature of a wiping roll and a room temperature.

Also,
The controller detects the surface temperature and room temperature of the wiping roll during printing, corrects the reference load of the wiping roll driving motor according to the detected surface temperature and room temperature of the wiping roll, and performs printing. The contact pressure adjusting motor is driven and controlled so that the load of the wiping / roll driving motor is equal to the corrected reference load.

  According to the method and apparatus for adjusting the contact pressure of the intaglio printing press according to the present invention described above, the contact pressure of the wiping roll is automatically and optimally adjusted in accordance with the preset printing conditions. In addition to being reduced, waste of printing materials such as paper and ink can be eliminated. In addition, the lifetime of the wiping roll can be extended.

  In addition, during printing, the contact pressure of the wiping roll is automatically adjusted according to the surface temperature and room temperature of the wiping roll, so that printing materials such as paper and ink can be further saved and the life of the wiping roll can be reduced. Can last longer.

1 is a hardware block diagram of a drive control device for a wiping / roll driving motor and a wiping / roll contact pressure adjusting motor according to an embodiment of the present invention. FIG. 1 is a hardware block diagram of a drive control device for a wiping / roll driving motor and a wiping / roll contact pressure adjusting motor according to an embodiment of the present invention. FIG. 1 is a hardware block diagram of a drive control device for a wiping / roll driving motor and a wiping / roll contact pressure adjusting motor according to an embodiment of the present invention. FIG. It is an operation | movement flowchart of the drive control apparatus of the wiping roll drive motor and the wiping roll contact pressure adjustment motor in one Example of this invention. It is an operation | movement flowchart of the drive control apparatus of the wiping roll drive motor and the wiping roll contact pressure adjustment motor in one Example of this invention. It is an operation | movement flowchart of the drive control apparatus of the wiping roll drive motor and the wiping roll contact pressure adjustment motor in one Example of this invention. It is an operation | movement flowchart of the drive control apparatus of the wiping roll drive motor and the wiping roll contact pressure adjustment motor in one Example of this invention. It is an operation | movement flowchart of the drive control apparatus of the wiping roll drive motor and the wiping roll contact pressure adjustment motor in one Example of this invention. It is an operation | movement flowchart of the drive control apparatus of the wiping roll drive motor and the wiping roll contact pressure adjustment motor in one Example of this invention. It is an operation | movement flowchart of the drive control apparatus of the wiping roll drive motor and the wiping roll contact pressure adjustment motor in one Example of this invention. It is an operation | movement flowchart of the drive control apparatus of the wiping roll drive motor and the wiping roll contact pressure adjustment motor in one Example of this invention. It is an operation | movement flowchart of the drive control apparatus of the wiping roll drive motor and the wiping roll contact pressure adjustment motor in one Example of this invention. It is an operation | movement flowchart of the drive control apparatus of the wiping roll drive motor and the wiping roll contact pressure adjustment motor in one Example of this invention. It is a side view of the contact pressure adjustment mechanism of a wiping apparatus. It is a top view which shows the drive system of a wiping apparatus. 1 is an overall side view of an intaglio printing press.

  Hereinafter, a contact pressure adjusting method and a contact pressure adjusting device for an intaglio printing press according to the present invention will be described in detail with reference to the drawings.

1A to 1C are hardware block diagrams of a driving control device for a wiping / roll driving motor and a wiping / roll contact pressure adjusting motor according to an embodiment of the present invention, and FIGS. 2A to 2D, 3A and 3B and FIG. 4A and 4B and FIGS. 5A and 5B are operation flow diagrams of the drive control device of the wiping / roll driving motor and the wiping / roll contact pressure adjusting motor in one embodiment of the present invention, and FIG. 6 is the contact pressure of the wiping device. 7 is a side view of the adjusting mechanism, FIG. 7 is a plan view showing a drive system of the wiping device, and FIG. 8 is an overall side view of the intaglio printing press.

  As shown in FIG. 8, the intaglio printing machine includes a paper feeding unit 10, an intaglio printing unit 11, and a paper discharge unit 12, and corresponds to the wiping device 14 in the intaglio printing unit 11 of the machine frame 13 connected to these. A cutout 15 for drawing out the wiping device is formed at the above-mentioned site, and the entire wiping device 14 can be drawn out to the outside of the operation side.

  The intaglio printing section 11 has ink from the inker transferred from an inking plate group 16 to an intaglio (not shown) mounted on the intaglio cylinder 17 and then ink other than the pattern portion is removed by the wiping device 14. The ink of the pattern portion is transferred to the paper passing between the intaglio cylinder 17 and the impression cylinder 18.

  As shown in FIG. 6, the wiping device 14 includes a wiping roll 20 that is pivotally supported by an inner hole of an eccentric bearing 21, and reciprocates a metal fitting 22 fixed to the outer peripheral side of the eccentric bearing 21. A wiping roll 20 is attached to and detached from the intaglio cylinder 17.

That is, the tip of the piston rod of the hydraulic cylinder 23 for wiping and detaching the roll is pivotally attached to the metal fitting 22 by the pin 24, while the screw shaft 2 is connected to the head side via the thrust bearing 25.
6 are connected. The thrust bearing 25 transmits the movement along the axial direction of the screw shaft 26 to the hydraulic cylinder 23 for wiping and detaching the roll.
There is no transmission to the roll attaching / detaching hydraulic cylinder 23. The screw shaft 26 is screwed into a screw bearing 28 fixed to the cleaning liquid tank 27.

A wiping / roll contact pressure adjusting motor (contact pressure adjusting motor) 30 is fixed to the bracket 29 containing the thrust bearing 25. A gear 32 fixed to the motor shaft 31 of the wiping / roll contact pressure adjusting motor 30 is a gear 33 fixed to the screw shaft 26.
Is engaged. On the other hand, the wiping / roll attaching / detaching hydraulic cylinder 23 is provided with a detection body 34, and in order to detect the position of the detection body 34, a direct acting potentiometer 35 is provided.
It has.

Accordingly, the wiping roll 20 comes into contact with the intaglio cylinder 17 when the wiping roll attaching / detaching hydraulic cylinder 23 is extended, and the wiping roll 20 is separated from the intaglio cylinder 17 when the wiping roll 20 is contracted. When the wiping roll contact pressure adjusting motor 30 is rotated while the wiping roll 20 and the intaglio cylinder 17 are in contact with each other, the screw shaft 26 rotates and moves in the axial direction. The detachable hydraulic cylinder 23 also moves, and the contact pressure between the wiping roll 20 and the intaglio cylinder 17 can be adjusted (contact pressure adjusting mechanism).
6 shows the left side (operation side) of the wiping roll 20, but the apparatus having the same configuration as described above is also assembled on the right side (drive side) of the wiping roll 20.

As shown in FIG. 7, the wiping / roll contact pressure adjusting motor 30 includes a wiping / roll driving motor (wiping / roll driving motor) 40 and a driving control device (control device) for the wiping / roll contact pressure adjusting motor 30. 50. When the wiping / roll contact pressure adjusting motor 30 rotates in the forward direction at the time of contact, the contact pressure is increased and the contact pressure is decreased in the reverse direction. Yes.

  The drive control device 50 sets the printing conditions such as the type of ink, the type of printing material (paper, etc.), the type of design (banknotes, etc.), the material of the wiping roll, the surface temperature of the wiping roll, and the room temperature. A reference load (current value) of the wiping / roll driving motor 40 is obtained according to the set printing conditions. During printing, the load (current value) of the wiping / roll driving motor 40 is equal to the reference load (current value). The wiping / roll contact pressure adjusting motor 30 is driven and controlled to be equal.

  Further, the drive control device 50 detects the surface temperature and room temperature of the wiping roll 20 during printing, and the reference load of the wiping roll drive motor 40 is detected according to the detected surface temperature and room temperature of the wiping roll 20. The wiping / roll contact pressure adjusting motor 30 is driven and controlled so that the load of the wiping / roll driving motor 40 becomes equal to the corrected reference load during printing.

Further, a reduction gear comprising a worm gear mechanism is provided between the output shaft 41 of the wiping roll drive motor 40 and the drive shaft 44 of the wiping roll 20 supported by the frame 42 via bearings 43 via a coupling 45. A machine 46 is interposed.

As shown in FIG. 1A to FIG. 1C, the drive control device 50 includes not only the CPU 100, the ROM 101 and the RAM 102 but also the input / output devices 103 to 111 and the interface 113 BUS.
(Bus) is connected.

  This BUS includes an ink type storage memory M100, a substrate type storage memory M101, a pattern type storage memory M102, a wiping roll material storage memory M103, a printing rotation speed storage memory M104, a wiping Roll rotation speed ratio storage memory M105, ink type-wiping / roll drive motor reference current value conversion table storage memory M106, wiping / roll drive motor temporary reference current value storage memory M107, printing material Type-wiping / roll driving motor reference current value conversion table storage memory M108, wiping / roll driving motor reference current value first correction value storing memory M109, pattern type-wiping / roll driving motor reference Current value conversion table storage memory M110 is connected It has been.

  Further, BUS includes a second correction value storage memory M111 for the reference current value of the wiping / roll driving motor, a memory current storage table M112 for wiping / roll surface temperature-wiping / roll driving motor reference current value conversion table, Memory M113 for storing surface temperature of wiping roll at the start of printing, third correction value storing memory M114 at the start of printing for reference current value of wiping roll driving motor, room temperature—reference current value for wiping roll driving motor Conversion table storage memory M115, room temperature storage memory M116 at the start of printing, fourth correction value storage memory M117 at the start of printing of the reference current value of the wiping / roll driving motor, printing start of the wiping / roll driving motor Reference current value storage memory M118, designated rotational speed storage memory M119, For storing the command rotational speed memory M120 for Ipingu roll drive motor is connected.

  The BUS includes an output storage memory M121 of an F / V converter connected to a rotary encoder for a driving motor, a current rotational speed storage memory M122 of an intaglio printing press, and a current of a wiping roll drive motor. Memory M123 for storing value, memory M124 for storing current difference of current value of wiping / roll driving motor, memory M125 for storing absolute value of difference of current value of wiping / roll driving motor, current of wiping / roll driving motor Current value difference memory M126, current wiping roll surface temperature memory M127, wiping roll drive motor reference current value current third correction value memory M128, wiping Difference storage memory M129 of the current third correction value of the reference current value of the roll drive motor, current room temperature Memory M130 for storing, current fourth correction value storing memory M131 for reference current value of wiping / roll driving motor, memory M132 for storing difference of current fourth correction value for reference current value of wiping / roll driving motor The memory M133 for storing the current reference current value of the wiping / roll driving motor is connected.

Further, the input / output device 103 includes an intaglio printing press drive switch 120, an intaglio printing press drive stop switch 121, an input device 122 such as a keyboard and various switches and buttons, a display 123 such as a CRT and a lamp, and a floppy (registered). (Trademark)-An output device 124 such as a disk drive or a printer is connected.

  The input / output device 104 includes an ink type setting unit 125, a printing material type setting unit 126, a pattern type setting unit 127, a wiping roll material setting unit 128, a printing rotation speed setting unit 129, and a wiping roll rotation. A speed ratio setting unit 130 is connected.

  A wiping roll surface temperature measuring device 132 is connected to the input / output device 105 via an A / D converter 131 and a room temperature measuring device 134 is connected via an A / D converter 133. .

  A wiping / roll attaching / detaching hydraulic cylinder 23 is connected to the input / output device 106 via a wiping / roll attaching / detaching hydraulic cylinder driving device 135.

  A driving motor 139 is connected to the input / output device 107 via a D / A converter 137 and a driving motor driver 138.

  The input / output device 108 is connected to a rotary encoder 142 for a driving motor that is coupled and driven to the driving motor via an A / D converter 140 and an F / V converter 141. The rotary encoder 142 for the driving motor is connected to the driving motor driver 138.

  A current value is input to the input / output device 109 from a wiping / roll driving motor driver 144 described later.

  A wiping / roll driving motor 40 is connected to the input / output device 110 via a D / A converter 143 and the wiping / roll driving motor driver 144 described above. Further, a wiping / roll driving motor / driver 144 is connected to a rotary encoder 146 for a wiping / roll driving motor that is connected to the wiping / roll driving motor 40.

  A wiping / roll contact pressure adjusting motor 30 is connected to the input / output device 111 via a wiping / roll contact pressure adjusting motor driver 147.

  The interface 113 is connected to the paper feeding unit 10 and the intaglio printing unit 11.

The operation of the drive control device 50 for the above-described wiping / roll driving motor and wiping / roll contact pressure adjusting motor will be described below.

  The drive control device 50 operates in accordance with the operation flow shown in FIGS. 2A to 2D, FIGS. 3A, 3B, 4A, 4B, 5A, and 5B.

  That is, it is determined in step P1 whether or not there is an input to the ink type setting unit 125. If yes, the ink type is read from the ink type setting unit 125 in step P2 and stored in the memory M100. On the other hand, if it is no, it will transfer to step P3 mentioned later directly.

  Next, in step P3, it is determined whether or not there is an input to the substrate type setting unit 126. If yes, the type of substrate is read from the substrate type setting unit 126 in step P4. On the other hand, if the result is not stored in the memory M101, the process proceeds to Step P5 described later.

  Next, in step P5, it is determined whether or not there is an input to the pattern type setting unit 127. If yes, the pattern type is read from the pattern type setting unit 127 in step P6 and stored in the memory M102. On the other hand, if the result is NO, the process proceeds to step P7 described later.

  Next, in step P7, it is determined whether or not there is an input to the wiping roll material setting device 128. If yes, in step P8, the wiping roll material setting device 128 sets the wiping roll 20 setting device. While reading the material and storing it in the memory M103, if the answer is no, the process directly proceeds to Step P9 described later.

  Next, in step P9, it is determined whether or not the printing rotation speed has been input to the printing rotation speed setting device 129. If yes, the printing rotation speed is read from the printing rotation speed setting device 129 in step P10, and the memory. On the other hand, if not, the process proceeds to Step P11 described later.

  Next, in step P11, it is determined whether or not the rotational speed ratio of the wiping roll 20 is input to the rotational speed ratio setting unit 130 of the wiping roll. If yes, the rotational speed of the wiping roll is determined in step P12. The rotation speed ratio of the wiping roll 20 is read from the ratio setting device 130 and stored in the memory M105. If no, the process proceeds to step P13 described later.

  Next, in step P13, it is determined whether or not the intaglio printing press drive switch 120 is ON. If yes, in step P14, the ink type-wiping / roll driving motor reference current value conversion table is read from the memory M106. On the other hand, if no, the process returns to Step P1.

  Next, in step P15, the ink type is read from the memory M100, and in step P16, using the ink type-wiping / roll driving motor reference current value conversion table, the wiping / roll driving is performed based on the ink type. A provisional reference current value of the motor 40 is obtained and stored in the memory M107.

  Next, in step P17, a reference current value conversion table of the type of printed material-wiping / roll driving motor is read from the memory M108, and in step P18, the type of printed material is read from the memory M101.

  Next, in step P19, the first correction of the reference current value of the wiping / roll driving motor 40 is performed based on the type of the printing material by using the reference current value conversion table of the printing material type / wiping / roll driving motor. After the value is obtained and stored in the memory M109, the pattern type-wiping / roll driving motor reference current value conversion table is read from the memory M110 in step P20.

  Next, after the pattern type is read from the memory M102 in step P21, the pattern type-wiping / roll driving motor reference current value conversion table is used in step P22 to determine the wiping / roll driving based on the pattern type. A second correction value for the reference current value of the motor 40 is obtained and stored in the memory M111.

  Next, in step P23, the material of the wiping roll 20 is read from the memory M103, and in step P24, the surface temperature of the wiping roll corresponding to the material of the wiping roll 20—the reference current value of the wiping roll drive motor. The conversion table is read from the memory M112.

  Next, in step P25, the surface temperature of the wiping roll 20 is read from the surface temperature measuring device 132 of the wiping roll via the A / D converter 131, and the memory for storing the surface temperature of the wiping roll at the start of printing is read. After storing in M113, the surface of the wiping roll at the start of printing using the wiping roll surface temperature corresponding to the material of the wiping roll 20 in step P26-the reference current value conversion table of the wiping roll drive motor. From the temperature, a third correction value at the start of printing the reference current value of the wiping / roll driving motor 40 is obtained and stored in the memory M114.

  Next, in step P27, the material of the wiping roll 20 is read from the memory M103, and in step P28, the room temperature-wiping roll drive motor reference current value conversion table corresponding to the material of the wiping roll 20 is stored in the memory. Read from M115.

  Next, in step P29, the room temperature is read from the room temperature measuring device 134 via the A / D converter 133 and stored in the room temperature storage memory M116 at the start of printing. Then, in step P30, the material of the wiping roll 20 is changed. A fourth correction value at the start of printing of the reference current value of the wiping / roll drive motor 40 is obtained from the room temperature at the start of printing using the corresponding room temperature-wiping / roll drive motor reference current value conversion table, Store in the memory M117.

  Next, in step P31, the temporary reference current value of the wiping / roll driving motor 40 is read from the memory M107, and in step P32, the first correction value of the reference current value of the wiping / roll driving motor 40 is read from the memory M109. Read.

  Next, in step P33, the second correction value of the reference current value of the wiping / roll driving motor 40 is read from the memory M111, and then in step P34, the reference current value of the wiping / roll driving motor 40 at the start of printing. 3 is read from the memory M114.

  Next, after the fourth correction value at the start of printing of the reference current value of the wiping / roll driving motor 40 is read from the memory M117 in Step P35, the temporary reference current value of the wiping / roll driving motor 40 is read in Step P36. In addition, when the first correction value of the reference current value of the wiping / roll driving motor 40, the second correction value of the reference current value of the wiping / roll driving motor 40, and the reference current value of the wiping / roll driving motor 40 are started to be printed. The third correction value and the fourth correction value at the start of printing of the reference current value of the wiping / roll driving motor 40 are added to calculate the reference current value at the start of printing of the wiping / roll driving motor 40, and the memory Store in M118.

  With the above operation flow, the reference current value at the start of printing of the wiping / roll driving motor 40 is calculated.

  Next, after a landing command is output to the wiping / roll attaching / detaching hydraulic cylinder driving device 135 in step P37, a paper feeding start command is output to the paper feeding unit 10 in step P38.

  Next, after outputting a printing start command to the intaglio printing unit 11 in step P39, the printing rotational speed is read from the memory M104 in step P40.

  Next, after overwriting the printing rotational speed in the command rotational speed storage memory M119 in step P41, the command rotational speed is read from the memory M119 in step P42.

  Next, in step P43, the rotational speed ratio of the wiping roll 20 is read from the memory M105. In step P44, the command rotational speed is multiplied by the rotational speed ratio of the wiping roll 20, and the command of the wiping roll drive motor 40 is obtained. The rotational speed is calculated and stored in the memory M120.

  Next, in step P45, the command rotational speed is read from the memory M119, and then in step P46, the command rotational speed is output to the driving motor driver 138 via the D / A converter 137.

  Next, in step P47, the command rotational speed of the wiping / roll driving motor 40 is read from the memory M120, and then in step P48, the wiping / roll driving motor / driver 144 is connected to the wiping / roll driving motor driver 144 via the D / A converter 143. The command rotational speed of the roll drive motor 40 is output.

  Next, in step P49, the output is read from the F / V converter 141 connected to the rotary encoder 142 for the driving motor via the A / D converter 140 and stored in the memory M121, and then the driving is performed in step P50. The current rotational speed of the intaglio printing press is calculated from the output of the F / V converter 141 connected to the motor rotary encoder 142 and stored in the memory M122.

  Next, in step P51, the command rotational speed is read from the memory M119, and then in step P52, it is determined whether or not the current rotational speed of the intaglio printing press is equal to the command rotational speed.

  Next, if yes in step P52 described above, the current value is read from the wiping / roll driving motor driver 144 in step P53 and stored in the current current value storage memory M123 of the wiping / roll driving motor. If so, the process returns to Step P45.

  Next, after reading the reference current value at the start of printing of the wiping / roll driving motor 40 from the memory M118 in step P54, the wiping / roll driving motor 40 is determined from the current value of the wiping / roll driving motor 40 in step P55. Is subtracted from the reference current value at the start of printing, and the current current value difference of the wiping / roll driving motor 40 is calculated and stored in the memory M124.

  Next, in step P56, the absolute value of the difference in the current value of the wiping / roll driving motor 40 is calculated from the difference in the current value of the wiping / roll driving motor 40 and stored in the memory M125. The current allowable value difference of the wiping / roll driving motor 40 is read from the memory M126.

  Next, in Step P58, it is determined whether or not the absolute value of the current difference between the current values of the wiping and roll drive motors is equal to or smaller than the allowable value of the current difference between the current values of the wiping and roll drive motors. On the other hand, if not, the current value of the wiping / roll driving motor 40 is read from the memory M123 in step P59.

  Next, in step P60, the reference current value at the start of printing of the wiping / roll driving motor 40 is read from the memory M118, and in step P61, the current value of the wiping / roll driving motor> printing of the wiping / roll driving motor. It is determined whether the current value is the reference current value at the start.

  Next, if yes in Step P61 described above, a reverse rotation command is output to the motor driver 147 for wiping / roll contact pressure adjustment in Step P62, while if not, the process proceeds to Step P67 described later.

  Next, in step P63, the current value is read from the wiping / roll driving motor driver 144 and stored in the current current value storage memory M123 of the wiping / roll driving motor. The reference current value at the start of printing is read from the memory M118.

  Next, in step P65, it is determined whether or not the current value of the wiping / roll driving motor is equal to the reference current value at the start of printing of the wiping / roll driving motor. If yes, the wiping / roll contact pressure is adjusted in step P66. The output of the reverse rotation command to the motor driver 147 is stopped and the process proceeds to Step P72 described later. If not, the process returns to Step P63.

  Next, after outputting a normal rotation command to the wiping / roll contact pressure adjusting motor / driver 147 in Step P67 described above, the current value is read from the wiping / roll driving motor / driver 144 in Step P68, and the wiping / rolling is performed. The current value stored in the drive motor is stored in the memory M123.

  Next, in step P69, the reference current value at the start of printing of the wiping / roll driving motor 40 is read from the memory M118, and in step P70, the current value of the wiping / roll driving motor = printing of the wiping / roll driving motor. It is determined whether the current value is the reference current value at the start.

  Next, if yes in Step P70, the forward rotation command output to the motor driver 147 for wiping / roll contact pressure adjustment is stopped in Step P71, and the process proceeds to Step P72 described later. Return to P68.

  With the above operation flow, the reference current value at the start of printing of the wiping roll drive motor 40 when the wiping roll 20 is pressed against the intaglio cylinder 17 with the optimum contact pressure is set.

  Next, after the material of the wiping roll 20 is read from the memory M103 in step P72, the surface temperature of the wiping roll according to the material of the wiping roll 20 in step P73-the reference current of the wiping roll drive motor. The value conversion table is read from the memory M112.

  Next, in step P74, the surface temperature of the wiping roll is read from the surface temperature measuring device 132 of the wiping roll via the A / D converter 131 and stored in the memory M127 for storing the surface temperature of the current wiping roll. After that, in step P75, the surface temperature of the wiping roll according to the material of the wiping roll 20-the reference current value conversion table of the wiping roll drive motor is used to determine the wiping roll surface temperature from the current surface temperature of the wiping roll. The current third correction value of the reference current value of the roll drive motor 40 is obtained and stored in the memory M128.

  Next, after the third correction value at the start of printing of the reference current value of the wiping / roll driving motor 40 is read from the memory M114 in step P76, the current reference current value of the wiping / roll driving motor 40 is read in step P77. The third correction value at the start of printing of the reference current value of the wiping / roll driving motor 40 is subtracted from the third correction value, and the current third correction value of the reference current value of the wiping / roll driving motor 40 is subtracted. The difference is calculated and stored in the memory M129.

  Next, in step P78, the material of the wiping roll 20 is read from the memory M103, and in step P79, the reference current value conversion table for the room temperature-wiping roll drive motor corresponding to the material of the wiping roll 20 is stored in the memory. Read from M115.

  Next, in step P80, the room temperature is read from the room temperature measuring device 134 via the A / D converter 133 and stored in the current room temperature storage memory M130. Then, in step P81, the temperature of the wiping roll 20 is determined. Using the room temperature-wiping / roll driving motor reference current value conversion table, the current fourth correction value of the reference current value of the wiping / roll driving motor 40 is obtained from the current room temperature and stored in the memory M131.

  Next, in step P82, the fourth correction value at the start of printing of the reference current value of the wiping / roll driving motor 40 is read from the memory M117, and then in step P83, the current reference current value of the wiping / roll driving motor 40 is determined. The fourth correction value at the start of printing of the reference current value of the wiping / roll drive motor 40 is subtracted from the fourth correction value of the current correction value of the current fourth correction value of the reference current value of the wiping / roll drive motor 40. The difference is calculated and stored in the memory M132.

  Next, after the reference current value at the start of printing of the wiping / roll driving motor 40 is read from the memory M118 in step P84, the current third correction value of the reference current value of the wiping / roll driving motor 40 is read in step P85. Are read from the memory M129.

  Next, in step P86, the current fourth correction value difference of the reference current value of the wiping / roll driving motor 40 is read from the memory M132, and in step P87, the reference at the start of printing of the wiping / roll driving motor 40 is performed. The difference between the current third correction value of the reference current value of the wiping / roll driving motor 40 and the difference of the current fourth correction value of the reference current value of the wiping / roll driving motor 40 is added to the current value, and wiping is performed. Calculate the current reference current value of the roll drive motor 40 and store it in the memory M133.

  With the above operation flow, the current reference current value of the wiping roll drive motor 40 that is optimal for the surface temperature and room temperature of the wiping roll during printing is calculated.

  Next, in Step P88, it is determined whether or not the intaglio printing press drive stop switch 121 is turned on. If yes, a paper feed stop command is output to the paper feed unit 10 in Step P89. The process proceeds to step P94.

  Next, in step P90, a printing stop command is output to the intaglio printing unit 11, and in step P91, a removal command is output to the wiping / roll attaching / detaching hydraulic cylinder driving device 135.

  Next, in step P92, a stop command is output to the driving motor driver 138, and then in step P93, a stop command is output to the wiping / roll driving motor driver 144.

  Next, in step P94, the current value is read from the wiping / roll driving motor driver 144 and stored in the current current value storage memory M123 of the wiping / roll driving motor. Then, in step P95, the wiping / roll driving motor 40 is read. Is read from the memory M133.

  Next, in step P96, the current reference current value of the wiping / roll driving motor 40 is subtracted from the current value of the wiping / roll driving motor 40 to calculate the difference between the current values of the wiping / roll driving motor 40. , The absolute value of the difference between the current values of the wiping / roll driving motor 40 is calculated from the difference between the current values of the wiping / roll driving motor 40 in step P97 and stored in the memory M125. To do.

  Next, after reading the allowable value of the current difference of the current of the wiping / rolling drive motor 40 from the memory M126 in Step P98, the absolute value of the difference of the current of the current of the wiping / rolling driving motor in Step P99 ≦ It is determined whether or not the current value difference of the wiping / roll driving motor is acceptable.

  Next, if yes in step P99, the process returns to step P72. If no, the current value of the wiping / roll driving motor 40 is read from the memory M123 in step P100.

  Next, in step P101, the current reference current value of the wiping / roll driving motor 40 is read from the memory M133, and in step P102, the current current value of the wiping / roll driving motor> current reference of the wiping / roll driving motor. Determine whether the current value.

  If yes in step P102, a reverse rotation command is output to the wiping / roll contact pressure adjusting motor driver 147 in step P103, and if no, the process proceeds to step P108 described later.

  Next, in step P104, the current value is read from the wiping / roll driving motor driver 144 and stored in the current current value storage memory M123 of the wiping / roll driving motor. The current reference current value is read from the memory M133.

  Next, in step P106, it is determined whether or not the current value of the wiping / roll driving motor is equal to the current reference current value of the wiping / roll driving motor. If yes, the wiping / roll contact pressure adjusting motor is determined in step P107. The reverse rotation command output to the driver 147 is stopped and the process returns to Step P72. If not, the process returns to Step P104.

  Next, in Step P108, a forward rotation command is output to the wiping / roll contact pressure adjusting motor / driver 147, and then in Step P109, the current value is read from the wiping / roll driving motor / driver 144, and the wiping / roll driving is performed. The current current value storage memory M123 of the motor is stored.

  Next, in step P110, the current reference current value of the wiping / roll driving motor 40 is read from the memory M133, and in step P111, the current value of the wiping / roll driving motor = the current reference of the wiping / roll driving motor. It is determined whether or not the current value. If yes, the forward rotation command output to the wiping / roll contact pressure adjusting motor driver 147 is stopped in step P112 and the process returns to step P72. If not, the process returns to step P109. Return.

With the above operation flow, during the steady operation of the intaglio printing press, the wiping / roll contact pressure adjusting motor 30 is automatically driven and controlled so that the wiping roll 20 is always pressed against the intaglio cylinder 17 with the optimum contact pressure.

  In this way, according to the present embodiment, the contact pressure of the wiping roll 20 is automatically and optimally adjusted according to preset printing conditions, so that the burden on the operator is reduced and paper or paper Waste of printing materials such as ink can be saved. In addition, the lifetime of the wiping roll 20 can be extended.

  Further, since the contact pressure of the wiping roll 20 is automatically adjusted according to the surface temperature and room temperature of the wiping roll 20 during printing, the waste of printing materials such as paper and ink can be further reduced and the wiping roll 20 can be saved. Can last longer.

Needless to say, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the scope of the present invention. Further, in the present invention, in the part that manages the nip pressure (width) of the intaglio printing press, when the roll on one side is driven independently, for example, the inking plate (pattern roll) and the intaglio cylinder, the inking plate and the collect cylinder, etc. Is also applicable.

DESCRIPTION OF SYMBOLS 10 Paper feed part 11 Intaglio printing part 12 Paper discharge part 13 Machine frame 14 Wiping apparatus 15 Notch 16 Thickening roller group 17 Intaglio cylinder 18 Impression cylinder 20 Wiping roll 21 Eccentric bearing 22 Metal fitting 23 Wiping / roll hydraulic cylinder 24 Pin 25 Thrust bearing 26 Screw shaft 27 Cleaning liquid tank 28 Screw bearing 29 Bracket 30 Motor for wiping / roll contact pressure adjustment 31 Motor shaft 32 Gear 33 Gear 34 Detector 40 Wiping / roll drive motor 41 Output shaft 42 Frame 43 Bearing 44 Drive shaft 45 Coupling 46 Reducer 50 Drive control device for wiping / roll driving motor and wiping / roll contact pressure adjusting motor 125 Ink type setting device 126 Printed material type setting device 127 Pattern type setting device 128 Wiping roll material temperature setting device 132 Wiping roll surface temperature measuring device 134 Room temperature measuring device 135 Wiping / roll attaching / detaching hydraulic cylinder driving device 144 Wiping roll driving motor / driver 146 Wiping / roll driving motor rotary encoder 147 Wiping / roll contact pressure adjustment motor driver

Claims (12)

An intaglio supported on an intaglio cylinder rotatably supported;
A wiping roll that contacts the intaglio and is rotatably supported;
A wiping roll drive motor for rotationally driving the wiping roll;
A contact pressure adjusting mechanism for adjusting a contact pressure of the wiping roll with respect to the intaglio;
A contact pressure adjusting motor for driving the contact pressure adjusting mechanism;
In an intaglio printing press with a contact pressure adjustment method,
Set the printing conditions,
According to the set printing conditions, a reference load of the wiping / roll driving motor is obtained,
Driving the contact pressure adjusting motor during printing so that the load of the wiping roll driving motor is equal to the reference load;
A method for adjusting the contact pressure of an intaglio printing press.   2. The contact pressure adjusting method for an intaglio printing press according to claim 1, wherein the printing condition is a type of ink.   2. The contact pressure adjusting method for an intaglio printing press according to claim 1, wherein the printing condition is a type of a substrate.   2. The contact pressure adjustment method for an intaglio printing press according to claim 1, wherein the printing condition is a type of a pattern.   The method for adjusting the contact pressure of an intaglio printing press according to claim 1, 2, 3, or 4, wherein the printing conditions are a surface temperature of a wiping roll and a room temperature. During printing, it detects the surface temperature and room temperature of the wiping roll,
According to the detected surface temperature and room temperature of the wiping roll, the reference load of the wiping roll driving motor is corrected,
Driving the contact pressure adjusting motor so that the load of the wiping roll driving motor is equal to the corrected reference load during printing;
The contact pressure adjusting method for an intaglio printing press according to claim 1. . An intaglio supported on an intaglio cylinder rotatably supported;
A wiping roll that contacts the intaglio and is rotatably supported;
A wiping roll drive motor for rotationally driving the wiping roll;
A contact pressure adjusting mechanism for adjusting a contact pressure of the wiping roll with respect to the intaglio;
A contact pressure adjusting motor for driving the contact pressure adjusting mechanism;
In an intaglio printing press with a contact pressure adjusting device,
Set the printing conditions, determine the reference load of the wiping / roll driving motor according to the set printing conditions, and during printing, the load of the wiping / roll driving motor becomes equal to the reference load. Providing a control device for driving and controlling the contact pressure adjusting motor;
A contact pressure adjusting device for an intaglio printing press.   The contact pressure adjusting device for an intaglio printing press according to claim 7, wherein the printing condition is a kind of ink.   The contact pressure adjusting device for an intaglio printing press according to claim 7, wherein the printing condition is a type of a substrate.   The contact pressure adjusting device for an intaglio printing press according to claim 7, wherein the printing condition is a kind of design.   The contact pressure adjusting device for an intaglio printing press according to claim 7, 8, 9, or 10, wherein the printing conditions are a surface temperature of a wiping roll and a room temperature.   The controller detects the surface temperature and room temperature of the wiping roll during printing, corrects the reference load of the wiping roll driving motor according to the detected surface temperature and room temperature of the wiping roll, and performs printing. 8. The contact pressure adjustment of an intaglio printing press according to claim 7, wherein the contact pressure adjustment motor is driven and controlled so that the load of the wiping / roll driving motor is equal to the corrected reference load. apparatus.

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