JP2012126001A - Electrical discharge monitoring method, electrical discharge monitoring method and web material treating equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a system and a method for monitoring static electrification or electrical discharge generated at a gravure rotary press etc.SOLUTION: One or more antennas 31 are installed around a printing part 3 of the gravure rotary press 1. In addition, an ammeter 51 is connected with a grounding path at one spot arranged at respective constituent elements, formed of a conductor, of the gravure rotary press 1, for example, an involvement preventive bar 29. Besides, a surface potentiometer 41 is arranged near printing paper 5. Output data of the antenna 31, the ammeter 51 and the surface potentiometer 41 are collected by an electrical discharge detector 61. The electrical discharge detector 61 determines the presence of a static discharge or paper electrification on the basis of each piece of output data, and at the same time, sends the output data etc. to a remote terminal device 65 connected through a company network 63, thus making the terminal device 65 display the output data etc in real time mode. Consequently, the static discharge or printing paper electrification can be monitored remotely.

Description

  The present invention relates to a discharge monitoring system, a monitoring method thereof, and a web material processing apparatus used in a web material processing apparatus that conveys and processes a web material such as a gravure rotary press.

  For printing on a gravure rotary press, ink containing a flammable organic solvent is used. At this time, there is a place where oxygen in the air and the volatile organic solvent are present in a certain ratio, and when electrostatic discharge occurs between the charged material and the conductor having a potential difference between the charged material, the organic solvent There is a risk of fire.

  Therefore, it is necessary to take measures to prevent the occurrence of fire due to electrostatic discharge at the place where the gravure rotary press is installed. As countermeasures, there are methods such as 1) discharging a charged object to a potential at which electrostatic discharge does not occur, and 2) detecting the occurrence of a discharge and giving a warning.

  Among them, as a method for detecting and warning the occurrence of discharge in 2), there is a method for detecting and warning the occurrence of discharge during operation of the electrostatic gravure printing machine (Patent Document 1).

JP-A-10-129030

  By the way, during the operation of a gravure rotary press, there are many products that can be charged and discharged by friction (peeling) charging, flow charging, or induction charging.

  FIG. 10 is a diagram showing an outline of the gravure rotary press 1. FIG. 10 shows only a portion for performing gravure printing, but the gravure rotary press 1 further includes a paper feeding unit and a paper discharging unit for feeding and discharging printing paper.

The gravure rotary press 1 includes a paper feed unit (not shown), a paper discharge unit (not shown), and a plurality of printing units 3 and the like. Each printing unit 3 prints each color (for example, cyan, magenta, yellow, black, special color, etc.).
The printing paper 5 fed from the paper feeding unit (for example, on the left side in FIG. 10) is conveyed between the printing units 3 and the printing units 3 by a plurality of conveyance rollers 23, and printing of each color is performed during this time. . The printed printing paper 5 is discharged to a paper discharge unit (for example, on the right side of FIG. 10).

  The printing unit 3 includes an impression cylinder 11, a plate cylinder 13, an ink pan 15, a doctor blade 21, a finisher roll 19, an air cylinder 25, an entrainment prevention bar 29, and the like. The ink pan 15 contains the color ink 17 of each printing unit 3. The ink 17 contains an organic solvent. A printing plate is wound around the plate cylinder 13, and printing is performed on the printing paper 5 running between the plate cylinder 13 and the impression cylinder 11. The ink on the printing paper 5 is dried by the drying device 27 while being conveyed along the plurality of conveyance rollers 23, and the printing paper 5 is conveyed to the next printing unit 3.

  The doctor blade 21 scrapes off excess ink 17 on the plate cylinder 13, and the finisher roll 19 rotates in the ink pan 15 to stir the ink 17 to be uniform. The air cylinder 25 adjusts the pressure applied to the impression cylinder 11 so that a uniform pressure is applied to the traveling printing paper 5. The winding prevention bar 29 prevents the printing paper 5 from being wound around the plate cylinder 13 and is provided between the impression cylinder 11 and the plate cylinder 13.

  The printing paper 5 is a web-like member such as paper, cellophane, OPP (biaxially oriented polypropylene), PET (polyethylene terephthalate), and nylon.

  During operation of the gravure rotary press 1, regardless of whether it is electrostatic or not, the printing paper 5 and the impression cylinder 11 etc. are charged by friction (peeling) charging, and the ink 17 is charged by flow charging. The floating conductor in the vicinity of the charged object is charged by induction charging and may be discharged. That is, there are many parts that can be charged and discharged.

  On the other hand, the method disclosed in Patent Document 1 targets an electrostatic gravure printing machine. The electrostatic gravure printing machine improves the ink deposition on the printing paper 5 by charging the impression cylinder 11 with a charging device to raise the ink 17 attached to the cells of the plate cylinder 13. The method disclosed in Document 1 detects electrostatic discharge in a current path to which a high voltage is applied from the amount of current.

  In the method of Patent Document 1, electrostatic discharge can be detected only during the operation of electrostatic gravure printing, and when discharge is generated from a frictionally charged impression cylinder during operation of normal gravure printing that is not electrostatic gravure printing, the discharge is performed. There is a problem that it cannot be detected. In addition, there is a problem that even when electrostatic gravure printing is in operation, it is impossible to detect a discharge that occurs in a place other than the current path.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a system and method for monitoring charging and discharging generated in a gravure rotary press or the like.

  In order to achieve the above-described object, a first invention is a discharge monitoring system used in a web material processing apparatus that conveys a web material and performs a predetermined process, and the surface of the web material processed by the web material processing apparatus Corresponding to the surface potential of the web material measured by the surface potential measuring device, connected to the surface potential measuring device for measuring the potential, and connected to the surface potential measuring device so as to be communicable. A discharge detection device that determines the presence or absence of charging of the web material based on the value of the output data, and a display based on the output data that is communicably connected to the discharge detection device via a network and that corresponds to the surface potential of the web material A discharge monitoring system.

  The discharge monitoring system according to a first aspect of the present invention further includes an antenna that is disposed around the web material processing device and receives electromagnetic waves generated by the web material processing device, and the discharge detection device includes the antenna. The terminal device determines whether or not there is electrostatic discharge based on the value and / or frequency component of output data corresponding to the electromagnetic wave received by the antenna and transmitted from the antenna. The display based on the output data corresponding to the electromagnetic wave received at.

Further, the first grounding path provided at one location in the component formed by the conductor of the web material processing apparatus and disposed in a first ground path through which current flows during electrostatic discharge of the web material processing apparatus A current measurement device for measuring a current flowing through the current measurement device, wherein the discharge detection device is communicably connected to the current measurement device, and is transmitted from the current measurement device and measured by the current measurement device. The terminal device determines the presence or absence of electrostatic discharge based on the output data corresponding to, and the terminal device performs display based on the output data corresponding to the current measured by the current measuring device.
Here, it is desirable that a second ground path in which a resistor having a resistance value higher than the internal resistance of the current measuring device is disposed in the component is further provided.

  Further, the discharge detection device or the terminal device determines a charging state of the web material based on a value of output data corresponding to the surface potential of the web material measured by the surface potential measurement device, and the terminal device Displays the result of the determination.

  In addition, the discharge detection device is communicably connected to a control device that controls the operation of the web material processing device, and when it is determined that there is electrostatic discharge or charging of the web material, A signal for stopping the operation of the web material processing apparatus is transmitted.

  Further, the discharge monitoring system of the first invention is connected to the discharge detection device so as to be communicable, and when the discharge detection device determines that the electrostatic discharge or the web material is charged, a predetermined alarm is issued. An alarm device is further provided.

  A second invention is a discharge monitoring system used in a web material processing apparatus that conveys a web material and performs a predetermined process, and is generated in the web material processing apparatus disposed around the web material processing apparatus. The presence or absence of electrostatic discharge based on the value and / or frequency component of the output data corresponding to the electromagnetic wave received by the antenna, connected to the antenna for receiving the electromagnetic wave and communicably connected to the antenna A discharge detecting device for determining the discharge, and a terminal device connected to the discharge detecting device through a network so as to be communicable and performing display based on output data corresponding to the electromagnetic wave received by the antenna. It is a monitoring system.

  3rd invention is a discharge monitoring system used for the web material processing apparatus which conveys a web material and performs a predetermined | prescribed process, Comprising: The said web provided at one place in the component formed with the conductor of the said web material processing apparatus A current measuring device for measuring a current flowing through the first ground path, which is disposed in a first ground path through which a current flows during electrostatic discharge of the material processing apparatus, and a communicable connection with the current measuring apparatus And a discharge detection device for determining the presence or absence of electrostatic discharge based on output data corresponding to the current measured by the current measurement device transmitted from the current measurement device, and connected to the discharge detection device via a network. And a terminal device that performs display based on output data corresponding to the current measured by the current measuring device.

  4th invention is the discharge monitoring method used for the web material processing apparatus which conveys web material and performs a predetermined | prescribed process, Comprising: The surface potential of the web material processed by the said web material processing apparatus with a surface potential measuring device Corresponding to the surface potential of the web material measured by the surface potential measuring device, transmitted from the surface potential measuring device, with a discharge detecting device connected to be communicable with the surface potential measuring device. Based on the output data corresponding to the surface potential of the web material in the step of determining the presence or absence of charging of the web material based on the value of the output data, and the terminal device connected to the discharge detection device through a network A discharge monitoring method comprising: a step of performing display.

  5th invention is the discharge monitoring method used for the web material processing apparatus which conveys web material and performs a predetermined | prescribed process, Comprising: It is an antenna arrange | positioned around the said web material processing apparatus, A step of receiving an electromagnetic wave generated, and a discharge detection device connected to be able to communicate with the antenna, based on a value and / or a frequency component of output data transmitted from the antenna and corresponding to the electromagnetic wave received by the antenna A step of determining the presence or absence of electrostatic discharge, and a step of performing display based on output data corresponding to the electromagnetic wave received by the antenna in a terminal device connected to the discharge detection device via a network. It is the discharge monitoring method characterized by this.

  6th invention is the discharge monitoring method used for the web material processing apparatus which conveys a web material and performs a predetermined | prescribed process, Comprising: One place is provided in the component formed with the conductor of the said web material processing apparatus, The said web A current measuring device disposed in a first ground path through which a current flows during electrostatic discharge of the material processing apparatus, and a step of measuring a current flowing in the first ground path and being communicably connected to the current measuring device And a step of determining the presence or absence of electrostatic discharge based on output data corresponding to the current measured by the current measuring device transmitted from the current measuring device, and communicating with the discharge detecting device via a network. And a step of performing display based on output data corresponding to the current measured by the current measuring device in a terminal device that can be connected. .

  7th invention is a web material processing apparatus which conveys a web material and performs a predetermined | prescribed process provided with the discharge monitoring system in any one of 1st to 3rd invention.

With the above configuration, the charge amount data of a web material such as printing paper is measured by the surface potential measuring device, and the electromagnetic wave and current data are measured by using the antenna and the current measuring device. These data represent the state of charging or electrostatic discharge of the web material, and are displayed in real time on a remote terminal device connected via a network. This makes it possible to monitor data on the charging and electrostatic discharge of the web material even from a remote terminal device remote from the web material processing apparatus. For example, the charging state of the web material can be determined from the data change state of the surface potential measuring device, and appropriate processing can be performed in advance. In addition, these output data can be accumulated and used to improve the operating condition and working environment of the web material processing apparatus in order to prevent sheet charging and electrostatic discharge.
In addition, since the web material is charged or electrostatic discharge is determined based on the above data, the operation of the web material processing apparatus such as a gravure rotary press is stopped or an alarm is generated according to the result, and the operator is prompted to do so. Appropriate measures can then be taken.

In addition, by determining the charging state of the web material from the data of the surface potential measuring device and displaying the determination result on the terminal device etc., the charging situation becomes easy to visually recognize, and safety measures are taken before the danger level becomes large It becomes easy to apply.
Furthermore, by using a surface potential measuring device, an antenna, and a current measuring device together, a comprehensive discharge detection system capable of detecting charging of a web material and electrostatic discharge can be configured, and discharge detection in a wide range, It is possible to detect discharges at various locations by providing grounding circuits and ammeters in various components, and can detect various charges and discharges generated in web material processing equipment such as gravure rotary presses. The location can be easily identified.

  According to the present invention, it is possible to provide a system and method for monitoring charging and discharging generated in a gravure rotary press or the like.

Schematic which shows the structure of the discharge monitoring system 2 which concerns on the 1st Embodiment of this invention. Schematic which shows the structure of the discharge detection apparatus 61 of the discharge monitoring system 2. FIG. The block diagram which shows the hardware structural example of the terminal device 65 and the discharge determination apparatus 75. FIG. 5 is a flowchart showing a flow of a discharge monitoring method by the discharge monitoring system 2; The figure which shows the example of a screen output to the terminal device 65 grade | etc.,. The figure which shows the example of the output data of the antenna 31. FIG. Schematic which shows the structure of the discharge monitoring system 2a which concerns on the 2nd Embodiment of this invention. Schematic which shows the structure of the discharge monitoring system 2b which concerns on the 3rd Embodiment of this invention. Schematic which shows the structure of the discharge monitoring system 2c which concerns on the 4th Embodiment of this invention. The figure which shows schematic structure of the gravure rotary press 1. FIG.

Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings.
FIG. 1 is a schematic configuration diagram showing a configuration of a discharge detection system 2 according to the first embodiment of the present invention. The discharge detection system 2 is provided in the gravure rotary press 1 illustrated in FIG.

  As described above, as shown in FIG. 1 or FIG. 10, the printing unit 3 of the gravure rotary press 1 includes an impression cylinder 11, a plate cylinder 13, an ink pan 15 that stores ink 17, a doctor blade 21, a furnisher roll 19, It consists of an air cylinder 25 for an impression cylinder, an entrainment prevention bar 29 and the like. The rotary press control device 55 is a sequencer or the like, and controls the operation of the gravure rotary press 1.

  The printing paper 5 supplied from the paper feeding unit or the preceding printing unit (not shown) is conveyed in the conveying direction shown in FIG. A via the conveying roller 23a, and advances between the impression cylinder 11 and the plate cylinder 13, At this time, the ink 17 of the ink pan 15 attached to the plate cylinder 13 is pressed onto the printing paper 5 and printed. The printed printing paper 5 is discharged to the next-stage printing unit or paper discharge unit (not shown) via the transport roller 23b.

  The discharge monitoring system 2 includes an antenna 31, a surface potential meter (surface potential measurement device) 41, an ammeter 51 (51a, 51b, 51c, current measurement device), a discharge detection device 61, an alarm device 59, a display device 57, and an in-house network. 63, a terminal device 65 (65a, 65b) connected to the in-house network 63, an alarm device 67, and the like.

  The antenna 31 is disposed around the printing unit 3 and receives electromagnetic waves generated with printing by the gravure rotary press 1. Further, the antenna 31 is connected to the discharge detection device 61 so as to be able to communicate regardless of wired or wireless, and transmits and outputs a voltage value or the like corresponding to the received electromagnetic wave to the discharge detection device 61 as output data.

  The antenna 31 may be of any type as long as it can receive electromagnetic waves. For example, the antenna 31 is a loop antenna, a dipole antenna, a slot antenna, or the like, and has a size that does not interfere with an operator who works near the printing unit 3. Is preferred. For example, a loop antenna of 30 cm or less may be used.

  The ammeter 51 is a sheet of the gravure rotary press 1 that can be charged during the operation of the gravure rotary press 1 and may be a discharge destination at the time of electrostatic discharge near the impression cylinder 11 or the ink 17. About the component formed with a conductor, after providing the earthing path of one place through which an electric current flows at the time of electrostatic discharge, it arrange | positions in the earthing path. The ammeter 51 is communicably connected to the discharge detection device 61.

  Constituent elements formed of a conductor are an entrainment prevention bar 29, an ink pan 15, a plate cylinder 13, and the like. For example, in the case of the ink pan 15, an insulator or the like is provided and insulated as necessary. In addition, it is possible to connect a conductive wire or the like only at one place and use it as a ground path. In this way, the ammeter 51a is connected to the ground path leading to the ground 53a with respect to the entrainment prevention bar 29, the ammeter 51b is grounded to the ground 53b regarding the ink pan 15, and the current is passed to the ground path leading to the ground 53c regarding the plate cylinder 13. A total of 51c is connected.

  Here, it is necessary to prevent the entrainment prevention bar 29, the ink pan 15, and the plate cylinder 13 from being grounded except through a ground path to which the ammeters 51a, 51b, and 51c are connected. If grounded by another path, the current due to electrostatic discharge may flow not to the ground path with the internal resistance of the ammeter 51 but to another path with low resistance. This is because the flowing current becomes minute and electrostatic discharge cannot be detected.

  As the ammeter 51 (51a, 51b, 51c), a known one that can measure a current value of several tens of μA to several hundred μA can be used, and a current value or a voltage value according to the measured current is used as output data. Transmit and output to the discharge detector 61.

  The surface potential meter 41 measures the surface potential due to charging of the printing paper 5, and a known one that outputs a voltage value, a current value, or the like corresponding to the measured surface potential as output data can be used. The surface electrometer 41 is provided in the vicinity of the impression cylinder 11 and in the vicinity of the printing paper 5 and not in contact with the printing paper 5. The surface potential meter 41 is communicably connected to the discharge detection device 61, and transmits and outputs output data to the discharge detection device 61.

Next, the discharge detection device 61 will be described with reference to FIG.
As illustrated in FIG. 2, the discharge detection device 61 performs, for example, a data acquisition device 71 that receives and acquires voltage data that is output data of the antenna 31, and frequency analysis of the acquired output (voltage) data of the antenna 31. The frequency analysis device 73, the data acquisition device 77 that receives and acquires current data and voltage data that are output data of the ammeter 51, and the voltage data and current that correspond to the surface potential that are output data from the surface potential meter 41 A data acquisition device 79 for receiving and acquiring data, and a (voltage) value (corresponding to the amplitude of the electromagnetic wave received by the antenna 31) and / or a frequency component (frequency of the electromagnetic wave received by the antenna 31) of the antenna 31 Corresponding to the component), the output data value (current value or voltage value) of the ammeter 51, and the output data value (voltage value or current value) of the surface potentiometer 41. It can, constituted by determining discharge determination device 75 or the like whether the charging of electrostatic discharge and the printing paper 5.

The data acquisition devices 71, 77, and 79 are, for example, data loggers or the like, and are connected to the antenna 31, the ammeter 51, and the surface potential meter 41 so as to communicate with each other.
The frequency analysis device 73 is an FFT analyzer, for example, and is connected to the data acquisition device 71 and the discharge determination device 75 so as to be communicable. Although it is desirable that the frequency can be analyzed at about 1 GHz, it is not limited to this and may be 100 MHz or less.
The discharge determination device 75 is realized by, for example, a computer and is connected to the alarm device 59, the display device 57, and the rotary press control device 55 so as to be communicable with each other, and the terminal device 65 (65 a, 65 b) via the in-house network 63. It is also possible to communicate with the alarm device 67 and the like.

  FIG. 3 is an example of a hardware configuration of the discharge determination device 75. In the discharge determination device 75, for example, a control unit 201, a storage unit 203, a media input / output unit 205, a peripheral device I / F unit 207, a communication unit 209, an input unit 211, a display unit 213, and the like are connected via a bus 215. Configured.

  The control unit 201 includes a CPU, ROM, RAM, and the like. The CPU calls a program stored in the storage unit 203, ROM, recording medium, etc. to a work memory area on the RAM and executes it, and drives and controls each unit connected via the bus 215. The ROM permanently holds a computer boot program, a program such as BIOS, data, and the like. The RAM temporarily stores the loaded program and data, and includes a work area used by the control unit 201 for performing various processes.

  The storage unit 203 is a hard disk drive or the like, and stores a program executed by the control unit 201, data necessary for program execution, an operating system, and the like. These program codes are read as necessary by the control unit 201, transferred to the RAM, and read and executed by the CPU.

  The media input / output unit 205 (drive device) is a media input / output device such as a floppy (registered trademark) disk drive, CD drive, DVD drive, and MO drive, and performs data input / output.

  A peripheral device I / F (interface) unit 207 is a port for connecting a peripheral device, and transmits / receives data to / from the peripheral device via the peripheral device I / F unit 207. The peripheral device I / F unit 207 is configured by a USB or the like, and usually has a plurality of peripheral devices I / F. The connection form with the peripheral device may be wired or wireless.

  The communication unit 209 includes a communication control device, a communication port, and the like, and is a communication interface that mediates communication with the alarm device 59, the display device 57, the rotary press control device 55, the in-house network 63, and the like, and performs communication control.

  The input unit 211 is an input device such as a keyboard, a pointing device such as a mouse, and a numeric keypad, and outputs input data to the control unit 201.

  The display unit 213 includes a display device such as a liquid crystal panel or a CRT monitor, and a logic circuit (video adapter or the like) for executing display processing in cooperation with the display device. The display unit 213 is input by the control of the control unit 201. Display information is displayed on a display device.

  The bus 215 is a path that mediates transmission / reception of control signals, data signals, and the like between the devices.

  The storage unit 203 or the like of the discharge determination device 75 stores electrostatic discharge or printing paper based on the values and frequency components of the output data of the antenna 31 and the output data values of the ammeter 51 and the surface potential meter 41 and those data. 5 is transmitted to the alarm device 59 or the like via the in-house network 63. The program etc. for transmitting to etc. are stored, and the process mentioned later is performed by this.

  The configuration of the discharge detection device 61 is not limited to that described with reference to FIG. For example, the functions of the frequency analysis device 73 and the discharge determination device 75 may be realized by an integrated computer, for example.

Returning to the description of the discharge monitoring system 2 in FIG.
The warning device 59 issues a warning to the operator of the gravure rotary press 1 visually or / and audibly based on the predetermined control signal transmitted from the discharge detection device 61 (discharge determination device 75). The speaker device, the rotating lamp device, and the like are not limited to these as long as the operator can recognize the occurrence of discharge.

  The display device 57 is provided in the work space of the gravure rotary press 1 or in the vicinity thereof, performs display based on data transmitted from the discharge detection device 61, and indicates the state of electrostatic discharge and sheet charging of the gravure rotary press 1 by an operator or the like. For example, it is a large liquid crystal display device.

  The in-house network 63 is a communication path between the discharge detection device 61 and the terminal device 65 and the alarm device 67 that are installed remotely from the work space of the gravure rotary press 1. For example, a wireless or wired LAN (local area network) is used. ) Etc.

The terminal device 65 (65a, 65b...) Connected to the in-house network 63 is, for example, a computer having the configuration described in FIG.
In the storage unit 203 of the terminal device 65, a program for transmitting and receiving data to and from the discharge detection device 61 via the in-house network 63, an antenna 31, an ammeter 51, and a surface potential meter transmitted from the discharge detection device 61 41 output data and a program for displaying on the display unit 213 based on the output data are stored.

Remotely away from the gravure rotary press 1 by sending output data of the antenna 31, the ammeter 51, and the surface potential meter 41 to the terminal device 65 via the in-house network 63 from the discharge detection device 61 (discharge determination device 75). The terminal device 65 can also monitor charging and discharging in the gravure rotary press 1.
In FIG. 2, the terminal device 65 and the like are connected to the discharge determination device 75 of the discharge detection device 61 via the in-house network 63, but are connected to, for example, the data acquisition devices 71, 77, and 79 of the discharge detection device 61. Accordingly, the terminal device 65 can perform display based on the output data of the antenna 31, the ammeter 51, and the surface potential meter 41.

  The alarm device 67 connected to the in-house network 63 emits a visual or / and auditory alarm in the same manner as the alarm device 59 described above, and is, for example, a speaker device or a rotating lamp device. The alarm device 67 can issue an alarm at a remote position away from the work space by the gravure rotary press 1 based on the aforementioned predetermined control signal transmitted from the discharge detection device 61 via the in-house network 63.

  In addition, a display device similar to the display device 57 such as a large liquid crystal display is connected to the in-house network 63, and transmitted from the discharge detection device 61 at a remote position away from the work space by the gravure rotary press 1. Display based on the above output data and the like can be performed so that the state of electrostatic discharge and sheet charging of the gravure rotary press 1 can be displayed in a visible manner.

  Next, the flow of the discharge monitoring method by the discharge monitoring system 2 of the present embodiment will be described with reference to FIG. FIG. 4 is a flowchart showing the flow of the discharge monitoring method by the discharge monitoring system 2.

As shown in FIG. 4, first, the operation of the gravure rotary press 1 is started (step S101).
With the start of printing by the gravure rotary press 1, the discharge monitoring system 2 is operated, the electromagnetic wave is received by the antenna 31, the current in the ground path is measured by the ammeter 51, and the surface potential of the printing paper 5 is measured by the surface potential meter 41. Measure. The antenna 31, the ammeter 51, and the surface potential meter 41 transmit and output voltage value and current value data as output data to the discharge detection device 61 according to the reception result of electromagnetic waves, the current, and the measurement result of the surface potential. The data acquisition devices 71, 77, 79 of the discharge detection device 61 receive and acquire these output data. (Step S102).

  Output data of the antenna 31, the ammeter 51, and the surface potential meter 41 is transmitted to the discharge determination device 75 and stored in the storage unit 203 and the like for use in determination of sheet charging and electrostatic discharge described later, and the discharge detection device 61 ( The control unit 201) of the discharge determination device 75 also transmits to the terminal device 65 and the like via the in-house network 63. The terminal device 65 stores the output data of the antenna 31, the output data of the ammeter 51, and the output data of the surface electrometer 41 in the storage unit 203 and displays them on the display unit 213 (step S103). In step S103, the output data is also transmitted to the display device 57 and displayed. The output data of the antenna 31 is subjected to frequency analysis, and the frequency component of the output data is also acquired. This is because it is used for determination of discharge by the discharge determination device 75.

  Each measured output data is sequentially sent to the terminal device 65, etc. via the in-house network 63, so that each data is displayed in real time on the remote terminal device 65, etc., away from the gravure rotary press 1, and the sheet charging, It becomes possible to monitor the presence or absence of electrostatic discharge.

  FIG. 5 is a diagram illustrating a screen example of the terminal device 65. A similar screen can also be displayed on the display device 57. FIG. 5A shows a screen example (1) 300 in which the output data of the antenna 31, the ammeter 51, and the surface potentiometer 41 sent to the terminal device 65 in step S103 of FIG. As shown in the figure, each data sent from the discharge detection device 61 to the terminal device 65 is displayed in real time on the same screen.

In the upper part of the screen example (1) 300, the output data of the ammeter 51 is displayed as a graph in time series. At the time when the graph suddenly changed and became a large value, it was shown that there was a discharge at a location corresponding to the ammeter 51.
Further, in the middle of the screen example (1) 300, the output data of the antenna 31 is displayed as a graph in time series. At the time when the graph sharply changes with a large amplitude, it indicates that there was a discharge at a location corresponding to the antenna 31.
In the lower part of the screen example (1) 300, the transition of the charging potential of the printing paper 5 based on the output data of the surface potential meter 41 is displayed in a graph in time series.

  In the screen example (1) 300, only one type of output data of the antenna 31, the ammeter 51, and the surface electrometer 41 is displayed. For example, a plurality of ammeters 51 (51a, 51b, Each output data of 51c) can also be displayed on the same screen. Each data may be displayed while switching to another screen.

  Further, the discharge monitoring system 2 described above may be provided in a plurality of printing units 3 or a plurality of gravure rotary presses 1. In this case also, the antennas 31 and ammeters in each printing unit 3 and each gravure rotary press 1 are provided. 51. The output data of the surface electrometer 41 can be displayed on the same screen or switched to another screen.

Returning to the flowchart of FIG.
The discharge detection device 61 analyzes the output data of the antenna 31 transmitted and output from the antenna 31 in response to reception of the electromagnetic wave, and determines the presence or absence of electrostatic discharge (step S104).
That is, based on the output data of the antenna 31 acquired and analyzed by the data acquisition device 71 and the frequency analysis device 73 of the discharge detection device 61, the control unit 201 of the discharge determination device 75 determines the presence or absence of discharge.

FIG. 6 is a diagram schematically showing output (voltage) data of the antenna 31 for determining the presence or absence of discharge by the discharge detection device 61. The output data corresponds to the electromagnetic wave received by the antenna 31. FIG. 6A shows the relationship between time and (voltage) value, and corresponds to the amplitude of the electromagnetic wave received by the antenna 31. FIG. 6B shows the frequency component of the output data and corresponds to the frequency component of the electromagnetic wave received by the antenna 31. The control unit 201 of the discharge determination device 75 determines whether or not such output data is equal to or higher than a predetermined (voltage) value. Further, the control unit 201 determines the presence or absence of a specific frequency component based on the frequency component of the output data.
The control unit 201 determines that electrostatic discharge has occurred when the output data is equal to or greater than a predetermined (voltage) value and a specific frequency component is detected.

  Around the printing unit 3 where the antenna 31 is installed, there are devices and parts that generate electromagnetic waves in addition to electrostatic discharge. For this reason, a range of specific frequency components to be detected for identifying electrostatic discharge is set in advance so that electromagnetic waves caused by electrostatic discharge can be distinguished from other electromagnetic waves. Further, the predetermined (voltage) value for determining the presence or absence of discharge from the output data and the threshold value for determining the presence or absence of a specific frequency component are also determined in advance and stored in the storage unit 203 of the discharge determination device 75 or the like. Keep it.

  In the determination of whether or not there is electrostatic discharge by the antenna 31 (step S104), when it is determined that electrostatic discharge has occurred ("Yes" in step S104), the discharge detection device 61 (the control unit 201 of the discharge determination device 75) A control signal for causing the alarm devices 59 and 67 to output an alarm is transmitted. Accordingly, the alarm devices 59 and 67 visually or / and audibly issue an alarm to the operator of the gravure rotary press 1 or the like. For example, a speaker, a rotating lamp, etc. are operated (step S121). Further, the discharge detection device 61 transmits a control signal for stopping the gravure rotary press 1 to the rotary press control device 55. Along with this, the rotary press control device 55 stops the operation of the gravure rotary press 1 (step S122).

  In response to the alarms of the alarm devices 59 and 67, the operator or the like takes measures against the source of electrostatic discharge (step S123), and then restarts the operation of the gravure rotary press 1 (step S101). The remote alarm device 67 also issues an alarm to the effect that electrostatic discharge has occurred in the gravure rotary press 1, so that a remote person can recognize that the electrostatic discharge has occurred in the gravure rotary press 1 and take the next action. (For example, the data of the antenna 31, the ammeter 51, the surface potential meter 41, etc. displayed by the terminal device 65 is confirmed) can be quickly caused.

Further, the discharge detection device 61 determines the presence or absence of electrostatic discharge based on output (current or voltage) data transmitted and output from the ammeter 51 in accordance with the measured current (step S105).
That is, based on the output data of the ammeter 51 acquired by the data acquisition device 77 of the discharge detection device 61, the control unit 201 of the discharge determination device 75 determines the presence or absence of discharge.

  Here, the control unit 201 of the discharge determination device 75 determines that electrostatic discharge has occurred when the output data is greater than or equal to a predetermined output value (current value or voltage value). The predetermined output value is determined in advance and stored in the storage unit 203 of the discharge determination device 75 or the like.

  In the determination of the presence or absence of electrostatic discharge by the ammeter 51 (step S105), the process when it is determined that electrostatic discharge has occurred ("Yes" in step S105) is the same as the above steps S121 to S123. Description is omitted.

  The discharge detection device 61 determines the charging state of the printing paper 5 based on output (voltage or current) data transmitted and output from the surface potential meter 41 according to the measured surface potential, and the determination result is displayed on the terminal. Transmit to the device 65 or the like. The terminal device 65 or the like displays this (step S106). In step S106, the determination result is also transmitted to the display device 57 and displayed.

In step S106, the control unit 201 of the discharge determination device 75 determines the state of charging based on the output data of the surface electrometer 41 acquired by the data acquisition device 79 of the discharge detection device 61.
For example, based on the output data, the control unit 201 of the discharge determination device 75 determines that the state is “good” (no charge or no problem) when the charge amount is equal to or less than a predetermined first value, and the predetermined first value. If it is greater than or equal to the predetermined second value, it is determined as “Caution”, and if it is greater than the predetermined second value, it is determined as “Danger”. The predetermined first and second values are stored in advance in the storage unit 203 of the discharge determination device 75.

As described above, the output data is transmitted to the terminal device 65 and the like and displayed, and the determination result is transmitted and displayed to the terminal device 65 and the like so that the operator or a remote person can determine the charging state of the printing paper 5. It can be easily identified.
Note that the above determination may be made by the control unit 201 of the terminal device 65 based on the output data of the surface electrometer 41 transmitted from the discharge detection device 61 in step S103. In this case, a program, data, and the like for performing the determination are stored in advance in the storage unit 203 of the terminal device 65 or the like.

  FIG. 5B is a screen example (2) 310 that displays the determination result of charging of the printing paper 5 on the terminal device 65 or the like in step S106 of FIG.

  In the screen example (2) 310, the location where the surface electrometer 41 is installed (“measurement position”), the output data of the surface electrometer 41 (“charging potential”), and the determination result of charging (“determination”) are displayed. Is displayed. In the figure, as a determination result, the state of charge (risk level) at each measurement position is displayed as a determination result by displaying signals in three colors of blue (good), yellow (caution), and red (danger). This makes it easy to visually recognize the charging state by color. The screen example (2) 310 may be displayed on the same screen as the screen example (1) 300 described above, or may be switched and displayed on a different screen.

For example, the charging potential of the unit a (the printing unit 3 that performs printing of the color a is set as the unit a) is −0.32 kV, which is in a “good” (blue) state, that is, the charging amount is the above-described first level. It indicates that the value is 1 or less.
Further, the charging potential of the unit b is −8.1 kV, which indicates a “dangerous” (red) state, that is, the charging amount is larger than the second value described above.
Further, the charging potential of the unit c is −2.5 kV, which is in a “caution” (yellow) state, that is, the charge amount is larger than the predetermined first value and not more than the predetermined second value. It shows that there is.

For example, in the case of “Caution” (yellow), it is not necessary to stop the gravure rotary press 1 immediately, but it is possible to watch and watch the data transition. It is also possible to remove the charge on the printing paper 5 at the measurement position in anticipation of a good point in time for the printing process.
In the lower part of the screen example (2) 310 in FIG. 5B, “paper” is displayed as the place where the surface electrometer 41 is installed (“measurement position”), and the charging state is “good”. ”(Blue). As described later, the “paper” represents a case where the surface electrometer 41 is provided in the vicinity of the printing paper 5 before starting printing in the printing unit 3.

  The discharge detection device 61 (the control unit 201 of the discharge determination device 75) further determines whether or not the printing paper 5 is charged based on the output data from the surface potentiometer 41 (step S107). Based on the output (voltage) data from the surface electrometer 41, when the charge amount exceeds a predetermined value (for example, a value equal to or greater than the second value), it is determined that the sheet is charged. The predetermined value is also determined in advance and stored in the storage unit 203 of the discharge determination device 75 or the like.

When the surface potential meter 41 determines whether or not there is a charge (step S107), when it is determined that the printing paper 5 is in a charged state (“Yes” in step S107), the discharge detection device 61 (the control unit of the discharge determination device 75). 201) transmits a control signal for outputting an alarm to the alarm devices 59 and 67. Accordingly, the alarm devices 59 and 67 visually or / and audibly issue an alarm to the operator of the gravure rotary press 1 or the like. For example, a speaker, a revolving light, etc. are operated (step S131). Further, the discharge detection device 61 transmits a control signal for stopping the gravure rotary press 1 to the rotary press control device 55. Along with this, the rotary press control device 55 stops the operation of the gravure rotary press 1 (step S132).
In response to a warning from the alarm device 59 or the like, the operator or the like takes measures against static elimination on the printing paper 5 (step S133), and then restarts the operation of the gravure rotary press 1 (step S101).

  The alarm devices 59 and 67 detected whether the electrostatic discharge was detected from the data of the antenna 31 or the ammeter 51 or the charging of the printing paper 5 when issuing an alarm in step S121 or step S131. For example, a warning may be issued with a different color or sound. Further, for example, a plurality of ammeters 51 are installed, but an alarm may be given so as to be able to identify which ammeter 51 (51a, 51b, 51c) has detected electrostatic discharge.

On the other hand, when it is determined that there is no electrostatic discharge or charging of the printing paper 5 in the determination of the presence or absence of electrostatic discharge and the charging of the printing paper 5 (step S104, step S105, step S107) (" None ”), the operation of the gravure rotary press 1 is continued (step S108), and until the production of the printed matter by the gravure rotary press 1 is completed (NO in step S109), electrostatic discharge and charging of the printing paper 5 are performed by the discharge monitoring system 2. The gravure rotary press 1 is operated while monitoring the presence or absence of printing, and printing is continued (steps S102 to S108).
When the production is finished (YES in Step S109), the gravure rotary press 1 is stopped and the process is finished (Step S110).

Through the processing flow described above, output data from the antenna 31, the ammeter 51, the surface potential meter 41, and the like is displayed in real time on the remote terminal device 65 via the in-house network 63. As a result, not only the operator of the work space of the gravure rotary press 1 but also remote personnel away from it can monitor data on electrostatic discharge and charging of the printing paper 5. For example, the charging state of the printing paper 5 can be determined from the change state of the output data of the surface potential meter 41, and appropriate processing can be performed in advance.
In addition, since the presence or absence of charging or electrostatic discharge of the printing paper 5 is determined based on the output data, the operation of the gravure rotary press 1 is stopped or an alarm is generated in accordance with the result, and the operator is prompted to do so. Will be able to take appropriate measures.

  Further, the charging state of the printing paper 5 is determined from the data of the surface potential meter 41, and the determination result is displayed on the terminal device 65 or the like, so that the charging state can be easily recognized and before the danger level is increased. It becomes easy to take safety measures.

In the determination process (step 104) of the presence or absence of electrostatic discharge based on the output data of the antenna 31, electrostatic discharge occurred when the output data was equal to or higher than a predetermined (voltage) value and a specific frequency component was detected. However, when there is no other electromagnetic source such as a power source, electrostatic discharge occurs when the output data exceeds the specified (voltage) value or when a specific frequency component is detected. You may make it determine with having carried out.
These determination methods are stored in advance in the storage unit 203 of the discharge determination device 75 as a program.

  Further, in the vicinity of the printing unit 3 where the antenna 31 is installed, there are devices and parts that generate electromagnetic waves in addition to electrostatic discharge. Depending on the frequency band of the electrostatic discharge electromagnetic wave, the discharge detection device 61 performs a filtering process on the output data of the antenna 31 using a high-pass filter, a low-pass filter, a band-pass filter, etc. Only electromagnetic waves may be detected, or output data after filtering processing may be displayed on the terminal device 65. Thereby, the detection accuracy of electrostatic discharge is improved.

  In the discharge detection system 2, the discharge detector 61 provides static electricity by providing the antenna 31, the ammeters 51 (51 a, 51 b, 51 c) and the surface potential meter 41 provided on the ground paths of a plurality of components, respectively. It is also possible to determine and estimate the location where discharge has occurred and the charging of the printing paper.

  That is, by displaying the output data of the antenna 31, the ammeters 51a, 51b, 51c, and the surface potential meter 41 in real time on the display unit 213 such as the terminal device 65, the operator or the like can output which output data is electrostatic discharge or paper charging. It is possible to quickly recognize whether or not there is a place where electrostatic discharge or sheet charging has occurred in the vicinity of the output data measuring device. Therefore, it is possible to quickly take measures against electrostatic discharge and sheet charging, and it is possible to speed up recovery. Further, as described above, the alarm pattern of the alarm device 59 or the like can be changed depending on which measurement device output data indicates electrostatic discharge or sheet charging.

Further, in step 102 in FIG. 4, each output data is stored in the storage unit 203 of the terminal device 65 or the discharge determination device 75, so that the output data is stored from the storage unit 203 at any time after the measurement. It can be read and displayed on the terminal device 65 or the like.
Thus, the output data is analyzed and, for example, the state of the work space or the gravure rotary press 1 is prevented in order to prevent the electrostatic discharge by comparing with the work space at the time when the electrostatic discharge is detected or the state of the gravure rotary press 1. It becomes possible to make improvements.

  FIG. 7 is a schematic configuration diagram showing a configuration of a discharge monitoring system 2a according to the second embodiment of the present invention. The configuration of the gravure rotary press 1 provided with the discharge monitoring system 2a is the same as that of the gravure rotary press 1 shown in FIG.

  In the discharge detection system 2a according to the second embodiment, a plurality of antennas 31 (31a, 31b) are provided in order to improve the detection accuracy of electrostatic discharge. In FIG. 7, the number of antennas 31 is two, but the number of antennas 31 may be further increased. Since the other configuration of the discharge monitoring system 2a is the same as that of the discharge monitoring system 2 of the first embodiment, the same reference numerals are given to the drawings and the description thereof is omitted. The discharge detection method by the discharge monitoring system 2a is also substantially the same as that by the discharge monitoring system 2 described with reference to FIG.

  The plurality of antennas 31a and 31b are respectively connected to the discharge detection device 61 (data acquisition device 71), and the output data of the plurality of antennas 31a and 31b is processed by the terminal device 65 by the process of step S103 in FIG. To the display unit 213 of the terminal device 65 as shown in the screen example (1) 300 of FIG. 5A together with the data of the other ammeters 51 and the surface electrometer 41. Is displayed.

Further, the discharge detection device 61 determines the presence or absence of electrostatic discharge based on output data from the plurality of antennas 31.
That is, in the discharge detection method by the discharge monitoring system 2a, in step S104 of FIG. 4, the discharge detection device 61 (the control unit 201 of the discharge determination device 75) determines which of the output (voltage) data of the plurality of antennas 31 is predetermined. When a specific frequency component is detected and the value exceeds the (voltage) value, it is determined that electrostatic discharge has occurred. Alternatively, as described above, depending on the installation environment of the antenna 31, when any of the output (voltage) data of the plurality of antennas 31 exceeds a predetermined (voltage) value or when a specific frequency component is detected, the static electricity It may be determined that a discharge has occurred.

  Also by the discharge monitoring system 2a of the second embodiment, the same effect as the discharge monitoring system 2 of the first embodiment can be obtained. In the vicinity of the printing unit 3, there is a material that can absorb electromagnetic waves, such as a grounded metal body. However, the discharge monitoring system 2 a is provided with a plurality of antennas 31, thereby preventing electrostatic discharge. It can be detected more reliably. In addition, the location where electrostatic discharge occurs can be determined and estimated in detail.

For example, when only the output data of either the antenna 31a or the antenna 31b indicates the occurrence of discharge, the output data of both the antenna 31a and the antenna 31b indicates the occurrence of discharge. When the value is higher, the discharge detection device 61 (the control unit 201 of the discharge determination device 75) determines that there is a place where electrostatic discharge is generated at a position close to any of the antennas 31 according to these situations, and the information Is displayed on the display unit 213 of the discharge determination device 75, or a different alarm is given by the alarm device 59 or the like accordingly, and this is shown to an operator or a remote person, thereby generating a place where electrostatic discharge occurs. Can be easily identified, and recovery can be accelerated.
Further, since the output data of the antenna 31a and the antenna 31b are displayed in real time on the terminal device 65 and the like, the above determination is made by comparing them, and the location where the electrostatic discharge is generated is located near which antenna 31. You can also know if there is.

  FIG. 8 is a schematic configuration diagram showing a configuration of a discharge monitoring system 2b according to the third embodiment of the present invention. The configuration of the gravure rotary press 1 provided with the discharge monitoring system 2b is the same as that of the gravure rotary press 1 of FIG.

  In the first and second embodiments, it is possible to detect electrostatic discharge with an ammeter 51 provided on the sole grounding path of each component of the gravure rotary press 1 such as the ink pan 15. If 51 is disconnected or the ammeter 51 is damaged, the conductor to which the ammeter 51 is connected becomes a floating conductor, which may cause a discharge.

  In the discharge monitoring system 2b according to the third embodiment, in order to avoid this risk, in the components formed by the conductor of the gravure rotary press 1, such as the entrainment prevention bar 29, the ink pan 15, and the plate cylinder 13, In addition to the ground path to which the total 51 is connected, a ground path to which a sufficiently high resistance is connected is provided separately.

  That is, as shown in FIG. 8, the entanglement prevention bar 29 is provided with a ground path to the ground 54a to which the resistor 52a having a resistance value higher than the internal resistance of the ammeter 51a is connected. In addition to the ground path to which the ammeter 51b is connected, the ink pan 15 is provided with a ground path to the ground 54b to which the resistor 52b having a resistance value higher than the internal resistance of the ammeter 51b is connected. In addition to the ground path to which the ammeter 51c is connected, the trunk 13 is provided with a ground path to the ground 54c to which a resistor 52c having a resistance value higher than the internal resistance of the ammeter 51c is connected. Each grounding path additionally provided can be provided in the same manner as the grounding path described in the first embodiment. Since the other configuration of the discharge monitoring system 2b is the same as that of the discharge monitoring system 2a of the second embodiment, the same reference numerals are given to the drawings and the description thereof is omitted. The discharge detection method by the discharge monitoring system 2b is also substantially the same as that by the discharge monitoring system 2 described with reference to FIG.

  As the resistor 52 (52a, 52b, 52c), it is possible to use a resistor whose leakage resistance of the entire ground path to which these resistors are connected is 1 MΩ or less. For example, a conductive rubber may be connected to the ground path, or a conductive Teflon (registered trademark) coat may be applied to the ground portion of the conductor portion. By adopting the above configuration, even when the ammeter 51 is detached or damaged, the constituent elements such as the anti-roll bar 29, the ink pan 15 and the plate cylinder 13 are grounded, and the discharge from the floating conductor is performed. It becomes possible to avoid the danger of.

  Even in the discharge monitoring system 2b of the present embodiment, the same effects as those of the discharge monitoring systems 2 and 2a are obtained, and the system is further safe.

  FIG. 9 is a schematic configuration diagram showing a configuration of a discharge monitoring system 2c according to the fourth embodiment of the present invention. The configuration of the gravure rotary press 1 provided with the discharge monitoring system 2c is the same as that of the gravure rotary press 1 of FIG.

  In the discharge detection system 2c according to the fourth embodiment, a plurality of surface electrometers 41 (41a, 41b) are provided in order to improve the detection accuracy of charging of the printing paper 5. In FIG. 9, the number of surface electrometers 41 is two, but the number of surface electrometers 1 may be further increased. Since the other configuration of the discharge monitoring system 2c is the same as that of the discharge monitoring system 2b of the third embodiment, the same reference numerals are given to the drawings and the description thereof is omitted. The discharge detection method by the discharge monitoring system 2c is also substantially the same as that by the discharge monitoring system 2 described with reference to FIG.

  The surface potential meter 41a shown in FIG. 9 is provided at the same position as the surface potential meter 41 of the first to third embodiments, and the surface potential of the printing paper 5 in a state after printing in the printing unit 3 is performed. Can be measured.

  On the other hand, the surface electrometer 41 b newly provided in the present embodiment is provided in the vicinity of the impression cylinder 11, in the vicinity of the printing paper 5 before printing in the printing unit 3 and in a position not in contact with the printing paper 5. The surface potential meter 41 b can measure the surface potential of the printing paper 5 in a state before printing with the ink 17 in the printing unit 3.

Printing paper traveling on the gravure rotary press 1 by displaying the output data of each of the surface electrometers 41a and 41b on a terminal device 65 or the like as shown in a screen example (1) 300 in FIG. It becomes possible to monitor the charge of No. 5 also on the sheet before printing, and more detailed charge monitoring can be performed.
The output data of these surface potentiometers 41a and 41b can also be used for determining the charging state of the printing paper 5 in step S106. As described above, the result of determining the charging state of the printing paper 5 before printing based on the output data of the surface potential meter 41b provided in the vicinity of the printing paper 5 before printing in the printing unit 3 is shown in FIG. ) Screen example (2) 310 corresponds to “paper” of “measurement position”.

  The discharge monitoring system 2c of the present embodiment can provide the same effects as the discharge monitoring systems 2, 2a, and 2b, and can measure the charging of the printing paper 5 at a plurality of locations. Detection accuracy can be improved.

  The preferred embodiments of the discharge monitoring system and the like according to the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to such examples. It is obvious for those skilled in the art that various modifications or modifications can be conceived within the scope of the technical idea described in the claims, and these are naturally within the technical scope of the present invention. It is understood that it belongs.

  For example, in the first to fourth embodiments, the antenna 31, the ammeter 51, and the surface electrometer 41 can be partially omitted. For example, a discharge monitoring system using only the surface electrometer 41 can be constructed. Is possible.

  Moreover, although the discharge monitoring system of the present invention has been described using an example applied to a gravure rotary press that performs printing processing on a printing paper that is a web material, the application target is not limited to this, and the web material is not limited to this. It can be applied and effective as long as it is transported and subjected to predetermined processing. For example, it is also applicable to a laminator for laminating a web material or a gravure coater for applying a web material. Is possible.

DESCRIPTION OF SYMBOLS 1 ... Gravure rotary press 2, 2a, 2b, 2c ... Discharge monitoring system 3 ... Printing section 5 ... Printing paper 11 ... Impression cylinder 13 ... Plate cylinder 15 ... Ink pan 17 ......... Ink 19 ......... Finnisher roll 21 ......... Doctor blade 23 ......... Conveying roller 25 ......... Impression cylinder air cylinder 29 ......... Entrapment prevention bars 31, 31a, 31b ......... Antenna 41, 41a, 41b ......... Surface electrometer 51 ......... Ammeter 52 ......... Resistors 53, 54 ...... Grounding 55 ......... Rotary press control device 57 ......... Display devices 59, 67 ......... Alarm device 61 .... Discharge detection device 63 .... In-house network 65 .... Terminal devices 71, 77, 79 .... Data acquisition device 73 .... Frequency analysis device 75 .... Discharge determination device.

Claims (13)

A discharge monitoring system used in a web material processing apparatus that conveys a web material and performs a predetermined process,
A surface potential measuring device for measuring the surface potential of the web material processed by the web material processing device;
Based on the value of the output data corresponding to the surface potential of the web material measured by the surface potential measurement device, which is communicably connected to the surface potential measurement device and transmitted from the surface potential measurement device. A discharge detection device for determining the presence or absence of charging;
A terminal device that is connected to be able to communicate with the discharge detection device through a network, and that performs display based on output data corresponding to the surface potential of the web material,
A discharge monitoring system comprising: An antenna for receiving electromagnetic waves generated by the web material processing apparatus, disposed around the web material processing apparatus;
The discharge detection device is communicably connected to the antenna and determines the presence or absence of electrostatic discharge based on the value and / or frequency component of output data transmitted from the antenna and corresponding to the electromagnetic wave received by the antenna. ,
The discharge monitoring system according to claim 1, wherein the terminal device performs display based on output data corresponding to electromagnetic waves received by the antenna. The first flow path is arranged in a first ground path that is provided at one location in a component formed by a conductor of the web material processing apparatus, and in which a current flows during electrostatic discharge of the web material processing apparatus. A current measuring device for measuring current;
The discharge detection device is communicably connected to the current measurement device, and based on output data corresponding to the current measured by the current measurement device transmitted from the current measurement device, determines the presence or absence of electrostatic discharge,
The discharge monitoring system according to claim 1, wherein the terminal device performs display based on output data corresponding to the current measured by the current measuring device.   The discharge monitoring system according to claim 3, further comprising a second ground path in which a resistor having a resistance value higher than an internal resistance of the current measuring device is disposed in the component. The discharge detection device or the terminal device determines the charging state of the web material based on the value of output data corresponding to the surface potential of the web material measured by the surface potential measurement device,
The discharge monitoring system according to claim 1, wherein the terminal device displays a result of the determination.   The discharge detection device is communicably connected to a control device that controls the operation of the web material processing apparatus, and determines that the electrostatic discharge or the web material is charged, the web material processing to the control device. 6. The discharge monitoring system according to claim 1, wherein a signal for stopping the operation of the apparatus is transmitted.   The apparatus further includes an alarm device that is communicably connected to the discharge detection device and that issues a predetermined alarm when the discharge detection device determines that the electrostatic discharge or the web material is charged. The discharge monitoring system according to any one of claims 1 to 6. A discharge monitoring system used in a web material processing apparatus that conveys a web material and performs a predetermined process,
An antenna for receiving electromagnetic waves generated by the web material processing apparatus, disposed around the web material processing apparatus;
A discharge detecting device that is communicably connected to the antenna, and that determines whether or not there is electrostatic discharge based on a value and / or frequency component of output data corresponding to an electromagnetic wave received by the antenna, transmitted from the antenna;
A terminal device that is connected to the discharge detection device through a network and that performs display based on output data corresponding to electromagnetic waves received by the antenna;
A discharge monitoring system comprising: A discharge monitoring system used in a web material processing apparatus that conveys a web material and performs a predetermined process,
The first flow path is arranged in a first ground path that is provided at one location in a component formed by a conductor of the web material processing apparatus, and in which a current flows during electrostatic discharge of the web material processing apparatus. A current measuring device for measuring current;
A discharge detection device that is communicably connected to the current measurement device, and that determines whether or not there is electrostatic discharge based on output data that is transmitted from the current measurement device and that corresponds to the current measured by the current measurement device;
A terminal device that is connected to the discharge detection device through a network and that performs display based on output data corresponding to the current measured by the current measurement device;
A discharge monitoring system comprising: A discharge monitoring method used in a web material processing apparatus that conveys a web material and performs a predetermined process,
A step of measuring a surface potential of a web material to be processed by the web material processing device with a surface potential measuring device;
Based on the value of the output data corresponding to the surface potential of the web material measured by the surface potential measuring device, transmitted from the surface potential measuring device, with the discharge detecting device connected to be communicable with the surface potential measuring device. Determining the presence or absence of charging of the web material;
A step of performing display based on output data corresponding to a surface potential of the web material in a terminal device connected to be able to communicate with the discharge detection device via a network;
A discharge monitoring method comprising: A discharge monitoring method used in a web material processing apparatus that conveys a web material and performs a predetermined process,
Receiving an electromagnetic wave generated by the web material processing apparatus with an antenna disposed around the web material processing apparatus;
A step of determining the presence or absence of electrostatic discharge based on the value and / or frequency component of output data transmitted from the antenna and corresponding to the electromagnetic wave received by the antenna, in the discharge detection device connected to be communicable with the antenna. When,
A step of performing display based on output data corresponding to an electromagnetic wave received by the antenna in a terminal device connected to be able to communicate with the discharge detection device via a network;
A discharge monitoring method comprising: A discharge monitoring method used in a web material processing apparatus that conveys a web material and performs a predetermined process,
A current measuring device provided at one location on a component formed by a conductor of the web material processing apparatus and disposed in a first ground path through which current flows during electrostatic discharge of the web material processing apparatus, Measuring the current flowing through the ground path;
A step of determining the presence or absence of electrostatic discharge based on output data corresponding to the current measured by the current measuring device, transmitted from the current measuring device, in the discharge detecting device connected to be communicable with the current measuring device; ,
A step of performing display based on output data corresponding to the current measured by the current measuring device in a terminal device communicably connected to the discharge detecting device via a network;
A discharge monitoring method comprising:   The web material processing apparatus which conveys the web material and performs a predetermined | prescribed process provided with the discharge monitoring system in any one of Claims 1 thru | or 9.

Images