JP2016129933A - Wiping device including vibration mechanism using ultrasonic wave and ultrasonic wave control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wiping device including an ultrasonic wave generator for generating ultrasonic waves to the exterior or interior of a wiping liquid tank, in which a cleaning fluid is accumulated, to prevent dirt from adhering to a cleaning unit for cleaning a wiping roller.SOLUTION: A wiping device in an intaglio printing machine includes an ultrasonic wave generator for vibrating a cleaning fluid in a wiping tank. The ultrasonic wave generator has: an oscillator which generates electric vibration; and a piezoelectric vibrator which converts the electric vibration into mechanical vibration to generate ultrasonic waves.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a wiping apparatus used in an intaglio printing machine, and in particular, a cleaning member on a cleaning unit is in contact with a peripheral surface of a wiping roller rotating while being immersed in a cleaning liquid in a wiping tank. The present invention relates to a wiping apparatus including an ultrasonic cleaning liquid vibration mechanism and an ultrasonic control method for cleaning dirt adhering to a cleaning unit member in a mechanism for wiping ink transferred to a wiping roller.

  Usually, the printing operation by an intaglio printing machine transfers ink to the intaglio plate surface mounted on the surface of the intaglio cylinder by an inking device, and the ink adhered to a portion other than the pattern portion of the transferred ink is brought into contact with the intaglio plate surface. Then, after wiping with a rotating wiping roller, printing is performed by transferring the ink of the remaining pattern portion onto the paper passing between the intaglio cylinder and the impression cylinder.

  In general, a wiping device for an intaglio printing machine includes a resin wiping roller (2) for wiping off excess ink on an intaglio plate mounted on an intaglio cylinder (1) and a wiping roller (2) as shown in FIG. A wiping tank (4) called a submersible cleaning tank filled with a cleaning liquid (3) for dissolving and dispersing the ink adhering to the ink, and the ink is mechanically removed in contact with the wiping roller (2). A cleaning member (6) composed of a plurality of brush groups (5) having a function and / or a flexible composition having an opening on the brush group (5) that does not hinder ink removal and is flexible. A cleaning member (6) fixed on a support shaft (8) on which a fiber scrubber (7) is placed and brought into surface contact with the wiping roller (2), and a wiping roller located on the downstream side of the cleaning member (6) On the surface of (2) It is composed of a steel or resin finishing blades wipe the washing liquid (3) the remaining (9) printed on the paper is performed by the printing section (not shown).

  In the conventional immersion type wiping apparatus, the contact time between the cleaning liquid (3) or the cleaning member (6) and the wiping roller (2) at a printing speed of less than 9,000 sheets / hour is long, and the wiping roller (2 ) Can be completely dissolved and dispersed.

  In addition, the thin film layer of the thin cleaning liquid (3) remaining on the surface of the wiping roller (2) after dissolving and dispersing the ink is also removed by the finishing blade (9), so that the completely cleaned wiping roller (2) is obtained. By entering the cycle for wiping off the ink on the intaglio plate again, it was possible to continuously print the intaglio print without stains.

  However, in the conventional wiping apparatus as described above, when the cleaning liquid (3) is new, the wiped ink is efficiently dissolved and dispersed in the cleaning liquid. However, the cleaning liquid ( 3) The ink density in the inside becomes high, so that the ability to dissolve and disperse the ink decreases, and undissolved ink gradually accumulates in the synthetic fibrous scrubber (7) located above the cleaning member (6). Will come to be.

  Therefore, when the number of continuous printed sheets reaches about 50,000 sheets or more, the ink on the wiping roller (2) cannot be completely wiped off, and a printing called “wiping residue” in which the remaining ink adheres to the printed matter. There was a defect or a printing defect called “solvent stain” in which the dirty cleaning liquid (3) adheres to the printed matter.

  When such an event occurs, the operator must temporarily stop the printing machine and take measures such as cleaning the cleaning member (6) or replacing the cleaning liquid (3). In addition, there is a problem that this cleaning operation is an undesirable operation for the operator to contaminate work clothes and hands.

  On the other hand, when printing is performed at a speed of 9,000 sheets / hour or more, the cleaning liquid (3) filled in the wiping tank (4) is thickly cleaned on the wiping roller (2) due to the acceleration of the wiping roller (2). A film pressure layer is formed and appears as an impact on the finishing blade (9) located downstream, and this finishing blade (9) is strongly pushed up, so that an extreme gap is formed between the wiping roller (2) and the finishing blade (9). A phenomenon occurs in which the cleaning liquid (3) cannot be completely removed due to a slight gap. Although this phenomenon is called “liquid rising phenomenon”, it enters the cleaning cycle of the next printing plate while leaving the cleaning solution (3) on the surface of the wiping roller (2), so that the ink in the intaglio printing plate is dissolved. There has been a problem that the speed of the intaglio printing press is hindered because the quality of the printed matter is remarkably impaired, for example, the printed matter is smeared or the cleaning liquid (3) adheres to the printing paper.

  As a measure to solve this problem, as shown in FIG. 9, in the wiping part of the intaglio printing press, ink accumulation on the cleaning member is suppressed, and a good printed matter can be obtained over a long period of time and high-speed printing can be performed. In addition, in order to reduce the burden on the operator, there is a cleaning mechanism of a device that cleans the ink adhering to the surface of the wiping roller (2).

  As the cleaning device, a cleaning member (6) for removing ink mechanically, and a spraying device for spraying a cleaning liquid (3) for dissolving and dispersing ink placed under the cleaning member (6) by a spray nozzle (10) (11) and a first-stage cleaning member, and a second-stage cleaning liquid recovery device that mechanically removes the cleaning liquid (3) remaining on the wiping roller (2). A wiping device for an intaglio printing machine provided downstream of a cleaning member is disclosed. As this cleaning liquid recovery device, for example, a method of using a combination of an absorption device (12) that sucks with vacuum pressure and an auxiliary blade (13) made of metal and / or synthetic resin is disclosed (for example, Patent Documents). 1).

  When the technique is used, the ink wiped off by the wiping roller (2) is dissolved and dispersed by the jet cleaning liquid, and the cleaning liquid (3) is collected, recirculated, and re-jetted to repeat the first. It is possible to suppress accumulation of undissolved ink at a portion where the step cleaning member comes into contact with the wiping roller (2). Further, a second-stage cleaning liquid recovery device that effectively removes the film-like cleaning liquid (3) remaining on the wiping roller (2) is provided downstream of the first-stage cleaning member. It becomes possible to remove the cleaning liquid.

  Further, even during high-speed printing at 9,000 sheets / hour or more, since the coating layer of the cleaning liquid (3) formed on the wiping roller (2) is thin, the finishing blade (9 ), And the contact between the wiping roller (2) and the finishing blade (9) can be maintained in the same state as at low speed.

  Even if these measures are taken, the wiping roller (2) is worn by the pressing force generated between the intaglio plate surface, and the delicate gap between the first stage cleaning member and the resulting cleaning member allows ink to accumulate, Although stains may occur in the printed matter, even in such a case, it is possible to stop only the paper supply without stopping the printing machine, and to clean the cleaning member by the self-cleaning action by the jet cleaning device, Unlike conventional immersion type wiping apparatuses, “solvent contamination” and “liquid drip phenomenon” are eliminated, and a good printed product can be stably produced.

  On the other hand, as shown in FIG. 10, a metal net (mesh) (on a base frame built on a holder (15) capable of following up to a set pressure in the axial direction of the roller as the wiping roller (2) fluctuates. 18) a wiping roller having a plurality of cleaning members (6) on which a synthetic fiber scrubber (19) is placed, which has an opening that does not hinder ink removal, and has flexibility. A wiping device for an intaglio printing press comprising a control device capable of automatically adjusting the pressure on the intaglio cylinder (2) of (6) with a preset value. It is disclosed (for example, see Patent Document 2).

  Further, two levers (one end side of the arm (16) that supports the holder (15) so that the holder (15) is swingably supported at the tip end thereof and the arm (16) are pivotally connected at a predetermined interval in the length direction. 17), and the other lever side of both levers are parallel to each other, and from the rotation center point of the connecting portion to the arm (16) to the rotation center point of the support portion of the liquid tank side wall. It is supported by a lever mechanism consisting of parallel links that is rotatably supported on the side wall of the liquid tank so that the length is the same, and the cleaning unit (14) is wiped to the support part of the side wall of the liquid tank via the lever mechanism. A contact pressure adjusting mechanism for changing the operation limit position of the fluid pressure actuator is provided, and the cleaning unit (14) is substantially linear in the radial direction of the wiping roller when adjusting the contact pressure. In Configured to work it has been disclosed (e.g., see Patent Document 3).

JP-A-11-268252 JP 2002-307649 A Japanese Patent Laid-Open No. 11-058674

  In both cases of the technique of Patent Document 1 and the technique of Patent Document 2, the cleaning unit for cleaning the wiping roller is immersed in the cleaning liquid, so that dirt present in the cleaning liquid is fixed and used after long-term use. It was a cause of defects and workability.

  In addition, the metal net part (mesh part) of the cleaning unit is immersed in the cleaning liquid in the liquid tank as well as the hydraulic rod, so that dirt adheres to the metal net, resulting in poor ink removal, poor cleaning ability, and defective products. Was the cause of the occurrence.

  Further, in order to clean the dirt adhering to each part in the liquid tank, each part must be disassembled and the like, so that cleaning can be performed only when the machine is stopped for a long period of time, and a cleaning time is required.

  An object of the present invention is to solve such a conventional problem, and in order to prevent dirt from adhering to a cleaning unit for cleaning a wiping roller, the cleaning liquid is stored outside the wiping tank or in a liquid. The present invention provides a wiping apparatus having an ultrasonic cleaning liquid vibration mechanism in a tank and an ultrasonic control method.

  The wiping device provided with the ultrasonic generator according to the present invention includes an ultrasonic generator that vibrates the cleaning liquid in the wiping tank in the wiping device in the intaglio printing press, and the ultrasonic generator includes an oscillator that generates electrical vibrations. And a piezoelectric vibrator that converts electric vibrations into mechanical vibrations and generates ultrasonic waves.

  The wiping device including the ultrasonic generator according to the present invention includes the ultrasonic generator further including a control device for controlling the ultrasonic generator, and the control device measures the temperature and the pH value of the cleaning liquid. Based on the cleaning liquid temperature and the pH value of the cleaning liquid measured by the cleaning liquid monitoring mechanism and the monitoring part having at least one of the position monitoring mechanism for measuring the positional information of the wiping roller or the cleaning unit, and the cleaning liquid monitoring mechanism, Calculates the amount of change from the reference value registered in advance, calculates the optimum frequency for the amount of change, and based on the position information measured by the position monitoring mechanism, the distance between the wiping roller and the piezoelectric vibrator or the cleaning unit A calculation unit for calculating a distance between the piezoelectric vibrator and the distance between the wiping roller and the piezoelectric vibrator calculated by the calculation unit or a cleaning unit and the piezoelectric vibrator Distance Based on a drive unit for moving the piezoelectric vibrator, based on the optimum frequency calculated by the calculating unit, characterized in that it comprises a control unit for controlling the frequency of the ultrasonic wave.

  The ultrasonic control method in the present invention is a control method for cleaning a wiping device in an intaglio printing press using ultrasonic waves in an ultrasonic generator, and is controlled by (i) frequency or (ii) piezoelectric vibrator When either (iii) (i) and (ii) are used for control by moving the position of (iii), and (i) or (iii) is selected The temperature and pH value of the cleaning liquid in the wiping tank in the intaglio printing press are measured, and the amount of change is calculated by comparing the measured temperature and pH value of the cleaning liquid with a pre-stored reference value. If the frequency is determined and controlled based on the amount of change, and (ii) or (iii) is selected, the position information of the wiping roller and the cleaning unit in the intaglio printing press is obtained. The distance between the piezoelectric vibrator is calculated based on the measured positional information of the wiping roller and the cleaning unit, and the calculated distance between the wiping roller and the piezoelectric vibrator and the distance between the cleaning unit and the piezoelectric vibrator are also calculated. In addition, the piezoelectric vibrator is moved to a position in a normal range, and the wiping device is cleaned by ultrasonic waves while controlling the frequency and / or the position of the piezoelectric vibrator.

  By vibrating the cleaning solution, the decomposition of dirt attached to the object to be cleaned was promoted, and the cleaning effect was improved.

  By disassembling and cleaning the ink attached to the metal net part and / or scrubbing part of the cleaning unit, the ink dropout was improved, the cleaning ability was prevented from being lowered, and the occurrence of defective products could be reduced.

  The cleaning unit drive for cleaning the wiping roller can be cleaned at any time by vibrating the cleaning liquid, so that the cleaning unit can be kept clean and the cleaning unit does not operate properly. And the occurrence of defective products could be reduced.

  In addition, it is possible to reduce the cleaning time because it is possible to wash the dirt adhering to each part in the wiping tank during printing.

The schematic of the wiping apparatus in this invention is shown. An example of the schematic diagram of the wiping apparatus in this invention is shown. An example of the schematic diagram of the wiping apparatus in this invention is shown. An example of the schematic diagram of the wiping apparatus in this invention is shown. The schematic diagram of the ultrasonic generator in the present invention is shown. The schematic of the positional relationship of the piezoelectric vibrator and cleaning object in this invention is shown. The flowchart of the control method in this invention is shown. The schematic of an example of the conventional wiping apparatus is shown. The schematic of an example of the conventional wiping apparatus is shown. The schematic of an example of the conventional wiping apparatus is shown.

  Embodiments of the present invention will be described with reference to the drawings. However, the present invention is not limited to the embodiments to be described below, and various other embodiments can be implemented within the scope of the technical idea described in the claims.

  In FIG. 1, the form of the wiping apparatus in the intaglio printing press of this invention is shown. The wiping device of the present invention includes an ultrasonic generator (20) having a cleaning liquid vibration mechanism, and specifically, a piezoelectric vibrator (for generating ultrasonic waves outside the bottom of the wiping tank (4) ( 22) is installed.

  The piezoelectric vibrator (22) may be close to the surface of the wiping tank (4) as shown in FIG. 1 or may be adjacent. In the adjacent state, since the piezoelectric vibrator (22) is in contact with the surface of the wiping tank (4), the generated ultrasonic waves can be transmitted more strongly than in the close state.

  In addition, about the place where the piezoelectric vibrator (22) is installed in the ultrasonic generator (20), as shown in FIG. 1, it is installed in one bottom part outside the liquid tank of the wiping tank (4). There is no limit. That is, as shown in FIG. 2, the wiping tank (4) may be installed at one or two locations on the side surface outside the liquid tank. Further, as shown in FIGS. 3 and 4, the wiping tank (4 ) May be installed on the bottom or side in the liquid tank. Moreover, although not shown in figure, you may install in multiple places, such as installing in the side surface inside a liquid tank, and the side surface outside a liquid tank.

  In this way, the determination of whether the surfaces of the piezoelectric vibrator (22) and the wiping tank (4) are close or adjacent to each other, and further, the piezoelectric vibrator (22) is wiped into the wiping tank (4). The size of the wiping tank (4) is determined for determining whether to install the piezoelectric vibrator (22) on the bottom and / or side of the wiping tank (4). And appropriately determined according to the performance of the ultrasonic generator (20).

  As shown in FIG. 5, the ultrasonic generator (20) includes an oscillator (21) and a piezoelectric vibrator (22) for having a mechanism for vibrating the cleaning liquid by ultrasonic waves. Furthermore, a control device (23) for controlling the ultrasonic generator (20) is installed. The control device (23) includes a monitoring unit (24), a calculation unit (25), a drive unit (26), and It has a controller (27).

  First, each part will be described.

  The oscillator (21) is for generating electrical vibration. The piezoelectric vibrator (22) is for converting electrical vibrations into mechanical vibrations to generate ultrasonic waves, and by controlling the frequency, the cleaning unit (14), the cleaning unit drive unit, and the wiping tank Wash each part.

  The monitoring unit (24) uses a cleaning liquid monitoring mechanism using a thermometer (28) and a pH meter (29) to measure the temperature and pH value of the cleaning liquid, and a potentiometer or a side length sensor. The position monitoring mechanism (30) includes a unit that measures position information of the wiping roller (2) and the cleaning unit (14).

  The calculation unit (25) calculates the amount of change from the reference value based on the temperature and pH value of the cleaning liquid measured by the thermometer (28) and the pH meter (29) in the monitoring unit (24). The optimum frequency for the amount of change is calculated. Further, based on the positional information of the wiping roller (2) and the cleaning unit (14) measured by the position monitoring mechanism (30) in the monitoring unit (24), as shown in FIG. 6, the wiping roller (2) The distance (a) of the piezoelectric vibrator (22) and the distance (b) between the cleaning unit (14) and the piezoelectric vibrator (22) are calculated.

  The drive unit (26) is configured to calculate the distance (a) between the wiping roller (2) and the piezoelectric vibrator (22) calculated by the calculation unit (25) or the distance (b) between the cleaning unit (14) and the piezoelectric vibrator (22). ), The piezoelectric vibrator (22) is moved, an appropriate distance (a) between the wiping roller (2) and the piezoelectric vibrator (22), and a distance between the cleaning unit (14) and the piezoelectric vibrator (22). It is a part which keeps (b). Moreover, although the drive part (26) is a mechanism which operates automatically, it is a mechanism which can also be manually operated.

  The control unit (27) controls the frequency of the ultrasonic generator (20) based on the optimum frequency calculated by the calculation unit (25). The control unit (27) is a mechanism that can be automatically controlled, but is also a mechanism that can be manually operated.

  Next, the principle of ultrasonic cleaning will be described. Vibrating vibration is locally generated by the vibration from the piezoelectric vibrator (22). When the intensity of the vibration exceeds a certain level (limit value), a cavity is generated there. It is ultrasonic cleaning to remove the dirt on the surface of the object using the force when the cavity is crushed.

  The ultrasonic generator (20) has at least two modes, and can switch modes according to the purpose of use. In the present embodiment, a description will be given of two modes, a mode used when the printing press is operating and a mode used when the printing press is stopped.

  In the mode used when the printing press is in operation, it is used for the purpose of improving the omission of ink deposited on the mesh portion. In this case, in order to obtain the maximum ultrasonic cleaning effect, a method of moving the piezoelectric vibrator (22) so that the distance between the object to be cleaned and the piezoelectric vibrator (22) is constant, or a change in cleaning liquid is used. On the other hand, there is a method of controlling the frequency, and both methods may be used at the same time, and either one is possible. However, it goes without saying that a more appropriate cleaning effect can be obtained by using both methods.

As described above, the distance between the object to be cleaned and the piezoelectric vibrator (22) is constant in order to obtain an ultrasonic cleaning effect. As described above, the distance (a) between the wiping roller (2) and the piezoelectric vibrator (22) and the cleaning unit ( 14) The position of the piezoelectric vibrator (22) is moved and adjusted so as to follow the fluctuation of the wiping roller (2) so that the distance (b) between the piezoelectric vibrator (22) and the piezoelectric vibrator (22) is always a constant distance. That is.

  Here, the fluctuation of the wiping roller means that the contact between the intaglio plate surface attached to the intaglio cylinder (1) and the wiping roller is lightened due to wear of the wiping roller (2). The position of the wiping roller (2) is changed by bringing the printing plate closer.

  The other method of controlling the frequency is to control the frequency to an appropriate frequency with respect to the change in the cleaning liquid based on the measured temperature and pH value of the cleaning liquid as described above. This makes it possible to constantly control the frequency of the cleaning liquid and the reference value corresponding to the pH value during operation of the printing press.

  The reference value is a value used as a reference for grasping the amount of change in temperature and pH value measured when the printing press is operated, and is stored in advance by the operator. This reference value is a value that can be set as appropriate by the operator at any time.

  Controlling to an appropriate frequency here means that when ultrasonic waves are radiated, a standing wave corresponding to the frequency is generated in the liquid, and a place where dirt is well removed every integer multiple of λ / 2. In order to obtain the maximum effect, the frequency is set appropriately for the distance between the wiping roller (2) or the cleaning unit (14) and the piezoelectric vibrator (22). Also, since the speed of the ultrasonic wave changes depending on the state of the cleaning liquid such as temperature, pH, and surfactant concentration, the frequency should be appropriate for the state of the cleaning liquid.

  The frequency is preferably in the range of 15 to 50 kHz so as to be applied to the particle size of the ink that adheres to the cleaning unit as dirt, and has a mechanism that can be set to an arbitrary frequency.

  The ultrasonic irradiation direction is preferably the contact point between the wiping roller (2) and the cleaning unit (14) in order to improve the removal of ink deposited on the mesh portion of the cleaning unit (14). Further, in order to decompose the ink to be cleaned by the cleaning unit (14), it is desirable to irradiate the front side of the rotation direction of the wiping roller (2) from the contact portion between the wiping roller (2) and the cleaning unit (14). .

  On the other hand, in the mode used when the printing press is stopped, it is used for the purpose of automatically cleaning the inside of the wiping tank (4) or the cleaning unit (14), and the arm (16) and the lever (17) which are driving units thereof. In this case, ultrasonic cleaning can be performed independently, and the mechanism can perform cleaning at an arbitrary frequency as in the case of operating the printing press.

  The frequency can be set arbitrarily by the operator using the control device (23) described above.

  The ultrasonic irradiation direction is preferably the entire area of the wiping tank (4) or the cleaning unit (14) and the driving unit in order to clean the inside of the wiping tank (4) or the cleaning unit (14) and the driving unit thereof. In addition, as a mechanism for selecting the irradiation direction, the piezoelectric vibrator (22) is driven by the drive unit and is driven automatically or manually.

  Next, an ultrasonic cleaning control method will be described with reference to the flowchart shown in FIG.

  First, when the printing press is operated (STEP 1), the ultrasonic control method is (i) frequency control, (ii) position control of the piezoelectric vibrator, or (iii) both frequency control and position control. It is determined by the operator whether to control with (STEP 2)

  When controlling the frequency, the temperature and pH value of the cleaning liquid (3) in the wiping tank (4) are measured (STEP 3).

  The measured temperature and pH value of the cleaning liquid (3) are compared with a reference value stored in advance, and the amount of change is calculated (STEP 4).

  An optimum frequency is determined based on the calculated amount of change, and controlled to that frequency (STEP 5).

  It is determined whether the printing press continues to be operated or stopped (STEP 6). If it continues to operate, the process returns to STEP 2 and is repeated until the printing press is stopped.

  On the other hand, when the position of the piezoelectric vibrator (22) is controlled, position information of the wiping roller (2) and the cleaning unit (14) is measured (STEP 3 ').

  Based on the measured positional information of the wiping roller (2) and the cleaning unit (14), the distance (b) of the piezoelectric vibrator (22) is calculated (STEP 4 ').

  Based on the calculated distance (a) between the wiping roller (2) and the piezoelectric vibrator (22) and the distance (b) between the cleaning unit (14) and the piezoelectric vibrator (22), the piezoelectric vibrator (22) It is moved to an appropriate position, and the optimum distance (a) between the wiping roller (2) and the piezoelectric vibrator (22) and the distance (b) between the cleaning unit (14) and the piezoelectric vibrator (22) are maintained (STEP 5). ´).

  It is determined whether the printing press is to be kept running or stopped (STEP 6 '). If it continues to run, the procedure returns to STEP 2 and is repeated until the printing press is stopped.

  When it is determined in STEP 6 and STEP 6 ′ that the printing press is stopped, the temperature and pH value of the cleaning liquid (3) in the wiping tank (4) are measured (STEP 7).

  The frequency is adjusted to the temperature and pH value of the measured cleaning liquid (3) (STEP 8), the inside of the wiping tank (4) is cleaned, and the series of flows is completed.

  In addition, when controlling by both frequency control and position control, STEP3 to STEP6 and STEP3 'to STEP6' are performed simultaneously.

  As mentioned above, although embodiment was described based on the Example which concerns on this invention, it cannot be overemphasized that there are various Examples within the range of the technical idea of a claim description, without being limited to this. .

DESCRIPTION OF SYMBOLS 1 Intaglio cylinder 2 Wiping roller 3 Cleaning liquid 4 Wiping tank 5 Brush group 6 Cleaning member 7 Synthetic fiber nonwoven fabric (Tawashi)
8 Support shaft 9 Finishing blade 10 Injecting nozzle 11 Injecting device 12 Suction device 13 Auxiliary blade 14 Cleaning unit 15 Holder 16 Arm 17 Lever 18 Metal net (mesh)
19 Swash 20 Ultrasonic Generator 21 Oscillator 22 Piezoelectric Vibrator 23 Control Device 24 Monitoring Unit 25 Calculation Unit 26 Drive Unit 27 Control Unit 28 Thermometer 29 pH Meter 30 Position Monitoring Mechanism (Potentiometer)

Claims (3)

In the wiping device in the intaglio printing press,
The wiping device includes an ultrasonic generator that vibrates the cleaning liquid in the wiping tank,
The ultrasonic generator includes an oscillator that generates electrical vibration and a piezoelectric vibrator that converts the electrical vibration into mechanical vibration and generates ultrasonic waves. The ultrasonic generator further comprises a control device for controlling the ultrasonic generator,
The control device includes a monitoring unit having at least one of a cleaning liquid monitoring mechanism for measuring the temperature and pH value of the cleaning liquid, and a position monitoring mechanism for measuring positional information of the wiping roller or the cleaning unit;
Based on the temperature and pH value of the cleaning liquid measured by the cleaning liquid monitoring mechanism, the amount of change from a pre-registered reference value is calculated, the optimum frequency for the amount of change is calculated, and the position monitoring mechanism A calculation unit that calculates a distance between the wiping roller and the piezoelectric vibrator or a distance between the cleaning unit and the piezoelectric vibrator based on the position information measured in
Based on the distance between the wiping roller calculated by the calculation unit and the piezoelectric vibrator or the distance between the cleaning unit and the piezoelectric vibrator, a drive unit that moves the piezoelectric vibrator;
The wiping apparatus comprising the ultrasonic generator according to claim 1, further comprising a control unit that controls the frequency of the ultrasonic wave based on the optimum frequency calculated by the calculation unit. In a control method for cleaning a wiping device in an intaglio printing press using ultrasonic waves in an ultrasonic generator,
(I) control by frequency,
(Ii) controlling the position of the piezoelectric vibrator by moving it;
(Iii) Control by both (i) and (ii)
One of them is selected,
When (i) or (iii) is selected, the temperature and pH value of the cleaning liquid in the wiping tank in the intaglio printing press are measured, and the measured temperature and pH value of the cleaning liquid and a pre-stored reference value , The amount of change is calculated, the frequency is determined and controlled based on the calculated amount of change,
When (ii) or (iii) is selected, the positional information of the wiping roller and the cleaning unit in the intaglio printing press is measured, and the piezoelectric vibration is based on the measured positional information of the iping roller and the cleaning unit. The distance of the child is calculated, and based on the calculated distance between the wiping roller and the piezoelectric vibrator and the distance between the cleaning unit and the piezoelectric vibrator, the piezoelectric vibrator is moved to a normal range position,
The ultrasonic control method, wherein the wiping device is cleaned with ultrasonic waves while controlling the frequency and / or the position of the piezoelectric vibrator.

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