WO2024105849A1 - Control system and control method - Google Patents

Control system and control method Download PDF

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Publication number
WO2024105849A1
WO2024105849A1 PCT/JP2022/042703 JP2022042703W WO2024105849A1 WO 2024105849 A1 WO2024105849 A1 WO 2024105849A1 JP 2022042703 W JP2022042703 W JP 2022042703W WO 2024105849 A1 WO2024105849 A1 WO 2024105849A1
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WO
WIPO (PCT)
Prior art keywords
injection molding
molding machine
control
unit
calculation
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PCT/JP2022/042703
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French (fr)
Japanese (ja)
Inventor
堀内淳史
Original Assignee
ファナック株式会社
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Application filed by ファナック株式会社 filed Critical ファナック株式会社
Priority to PCT/JP2022/042703 priority Critical patent/WO2024105849A1/en
Publication of WO2024105849A1 publication Critical patent/WO2024105849A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/76—Measuring, controlling or regulating

Definitions

  • This disclosure relates to a control system and a control method.
  • JP 2020-121548 A discloses an injection molding machine with an interlock function that prevents pressing the wrong operation button.
  • a first aspect of the present disclosure is a control system for controlling an injection molding machine, the control system comprising: a physical quantity acquisition unit that acquires physical quantities indicating a state of the injection molding machine; a control unit that controls the injection molding machine based on a control command that performs interlock control on the injection molding machine; and a monitoring unit that monitors whether the injection molding machine has performed an operation based on the control command based on the physical quantities in the injection molding machine, and if the injection molding machine has not performed an operation based on the control command after a predetermined time has elapsed since receiving the control command from the control unit, the monitoring unit discontinues control of the injection molding machine based on the control command or stops operation of the injection molding machine.
  • a second aspect of the present disclosure is a control method in a control system that controls an injection molding machine, which obtains physical quantities indicating the state of the injection molding machine, controls the injection molding machine based on control commands that perform interlock control on the injection molding machine, monitors whether the injection molding machine has performed an operation based on the control command based on the physical quantities in the injection molding machine, and, if the injection molding machine has not performed an operation based on the control command after a predetermined time has elapsed since control of the injection molding machine based on the control command was started, stops control of the injection molding machine based on the control command or stops operation of the injection molding machine.
  • FIG. 1 is a schematic diagram of the control system.
  • FIG. 2 is a table showing an example of calculation conditions.
  • FIG. 3 is a time chart of the screw position and the interlock signal.
  • FIG. 4 is a block diagram showing the configuration of the control system.
  • FIG. 5 is a diagram showing examples of options related to the interlock signal.
  • FIG. 6 is a diagram showing examples of options related to the interlock signal.
  • FIG. 7 is a diagram showing a calculation condition setting screen.
  • FIG. 8 is a diagram showing a calculation condition setting screen.
  • FIG. 9 is a diagram showing a control command setting screen.
  • FIG. 10 is a flowchart showing the process executed in the input device.
  • FIG. 11 is a flowchart showing the process executed in the control device.
  • FIG. 10 is a flowchart showing the process executed in the input device.
  • FIG. 11 is a flowchart showing the process executed in the control device.
  • FIG. 10 is a flowchart showing the process executed in
  • FIG. 12 is a schematic diagram of the control system of this embodiment.
  • FIG. 13 is a block diagram showing the configuration of the control system.
  • FIG. 14 is a block diagram showing the configuration of the control system.
  • FIG. 15 is a flowchart showing the process executed in the input device.
  • FIG. 16 is a flowchart showing the process executed in the management device.
  • FIG. 17 is a flowchart showing the process executed in the control device.
  • interlock control is performed to permit or prohibit certain operations of the injection molding machine, the mold installed in the injection molding machine, the robot, etc.
  • the objective of this disclosure is to provide a control system and control method that can reduce damage to the injection molding machine, prolonged molding times, etc., even when interlock control is not performed in the injection molding machine.
  • Control system overview] 1 is a schematic diagram of a control system 10 according to the present embodiment.
  • the control system 10 includes one input device 12 and a plurality of control devices 14.
  • the input device 12 is, for example, a tablet terminal, a smartphone, etc.
  • the input device 12 has a display device such as a liquid crystal display, an organic EL (Electro Luminescence) display, etc.
  • the input device 12 also has an input device such as a touch panel. An operator operates the input device to input information into the input device 12.
  • a flash memory such as a USB memory or a memory card may be connected to the input device 12, and information may be input from the flash memory to the input device 12.
  • the input device 12 may also be a personal computer, etc.
  • Each of the control devices 14 is provided in correspondence with each of the injection molding machines 16.
  • the control devices 14 have display devices such as a liquid crystal display and an organic EL display.
  • the control devices 14 also have input devices such as a touch panel.
  • the control devices 14 may also have input devices such as a keyboard and a mouse.
  • a flash memory such as a USB memory or a memory card may be connected to the control devices 14.
  • the injection molding machine 16 may include a mold that is attached to the molding machine body, a robot that removes the molded product from the mold, etc.
  • the robot corresponds to the peripheral device of the present invention.
  • the input device 12 and the control device 14 are connected to a communication network 18.
  • the input device 12 and the control device 14 are arranged to be able to communicate with each other via the communication network 18.
  • the communication network 18 may be a LAN (Local Area Network), a WAN (Wide Area Network), the Internet, etc., and may be wired or wireless.
  • the control system 10 may have one input device 12 and one control device 14.
  • the control system 10 may also have multiple input devices 12 and multiple control devices 14.
  • the input device 12 is not used as a dedicated device for one control device 14, but is used as a shared device for multiple control devices 14.
  • a server 20 may also be connected to the communication network 18.
  • Calculation conditions are generated based on the information input by the operator to the input device 12.
  • the calculation conditions are conditions for calculating the interlock signal.
  • FIG. 2 is a table showing examples of calculation conditions.
  • the interlock signal is an ON/OFF signal. Interlock control is performed in the injection molding machine 16 while the interlock signal is ON.
  • the calculation conditions consist of a condition that specifies the period during which the interlock signal is ON, and a control command that is associated with the interlock signal.
  • the conditions that stipulate the period during which the interlock signal "Sig.1” is ON are set such that the molding process is the injection process and that the monitor value (screw position) is greater than a threshold value of 10.0 [mm].
  • the interlock signal "Sig.1” is turned ON after a delay time of 0.1 [s] from the point in time when the aforementioned conditions are met.
  • Figure 3 is a time chart of the screw position and interlock signal "Sig.1". As shown in Figure 3, in the period from time T1 to time T2, the interlock signal "Sig.1" is ON. Time T1 is the time when a delay time of 0.1 [s] has elapsed since the screw position satisfied the calculation conditions for the interlock signal "Sig.1". Time T2 is the time when the screw position no longer satisfies the calculation conditions for the interlock signal "Sig.1".
  • Names such as "Inject1" in Figure 2 are names assigned to each interlock signal, and are set arbitrarily by the operator. It is difficult for an operator to determine the purpose of an interlock signal from a signal ID such as "Sig.1.” By having the operator set an arbitrary name for each interlock signal, it becomes easier for the operator to determine the purpose of an interlock signal from a name such as "Inject1.”
  • FIG. 4 is a block diagram showing the configuration of the control system 10.
  • the input device 12 includes a processor 22 and a storage device 24.
  • the processor 22 is, for example, a processor such as a central processing unit (CPU) or a graphics processing unit (GPU).
  • the processor 22 includes an option acquisition unit 26 and an input reception unit 28.
  • the option acquisition unit 26 and the input reception unit 28 are realized by the processor 22 executing a program stored in the storage device 24.
  • At least a part of the option acquisition unit 26 and the input reception unit 28 may be realized by an integrated circuit such as an application specific integrated circuit (ASIC) or a field programmable gate array (FPGA).
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • At least a part of the option acquisition unit 26 and the input reception unit 28 may be realized by an electronic circuit including a discrete device.
  • the storage device 24 is composed of a volatile memory (not shown) and a non-volatile memory (not shown), which are computer-readable storage media.
  • the volatile memory is, for example, a RAM (Random Access Memory), etc.
  • the non-volatile memory is, for example, a ROM (Read Only Memory), a flash memory, etc. Data, etc. are stored, for example, in the volatile memory. Programs, tables, maps, etc. are stored, for example, in the non-volatile memory.
  • At least a part of the storage device 24 may be provided in the above-mentioned processor, integrated circuit, etc.
  • At least a part of the storage device 24 may be mounted on a device connected to the input device 12 via the communication network 18.
  • the option acquisition unit 26 acquires options related to the interlock signal from an option storage unit 46 provided in the storage device 32 of the control device 14.
  • the option storage unit 46 stores options associated with each of the injection molding machines 16 in advance. The options will be described in detail later.
  • the input receiving unit 28 receives input of calculation conditions generated by the operator selecting an option.
  • the calculation conditions are generated as conditions corresponding to the injection molding machine 16 associated with the option used for generation.
  • the input receiving unit 28 may receive input of calculation conditions stored in a flash memory connected to the input device 12.
  • the flash memory stores calculation conditions corresponding to each of the injection molding machines 16.
  • the calculation conditions accepted by the input acceptance unit 28 are sent to the control device 14 that controls the injection molding machine 16 to which the calculation conditions correspond.
  • the control device 14 controls the injection molding machine 16 to which the calculation conditions correspond.
  • the control device 14 includes a calculation processing device 30, a storage device 32, and an I/O unit 34.
  • the calculation processing device 30 is a processor such as a central processing unit (CPU) or a graphics processing unit (GPU).
  • the calculation processing device 30 includes a calculation condition acquisition unit 36, a physical quantity acquisition unit 38, an interlock signal calculation unit 40, a control unit 42, and a monitoring unit 44.
  • the calculation condition acquisition unit 36, the physical quantity acquisition unit 38, the interlock signal calculation unit 40, the control unit 42, and the monitoring unit 44 are realized by the calculation processing device 30 executing a program stored in the storage device 32.
  • At least a part of the calculation condition acquisition unit 36, the physical quantity acquisition unit 38, the interlock signal calculation unit 40, the control unit 42, and the monitoring unit 44 may be realized by an integrated circuit such as an application specific integrated circuit (ASIC) or a field programmable gate array (FPGA). At least a portion of the calculation condition acquisition unit 36, the physical quantity acquisition unit 38, the interlock signal calculation unit 40, the control unit 42, and the monitoring unit 44 may be realized by electronic circuits including discrete devices.
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • the storage device 32 is composed of a volatile memory (not shown) and a non-volatile memory (not shown), which are computer-readable storage media.
  • the volatile memory is, for example, a RAM (Random Access Memory), etc.
  • the non-volatile memory is, for example, a ROM (Read Only Memory), a flash memory, etc. Data, etc. are stored, for example, in the volatile memory. Programs, tables, maps, etc. are stored, for example, in the non-volatile memory.
  • the storage device 32 has an option storage unit 46 and a data storage unit 48. At least a part of the storage device 32 may be provided in the above-mentioned processor, integrated circuit, etc. At least a part of the storage device 32 may be mounted on a device connected to the control device 14 by the communication network 18.
  • the calculation condition acquisition unit 36 acquires the calculation conditions accepted by the input acceptance unit 28 of the input device 12.
  • the calculation conditions acquired by the calculation condition acquisition unit 36 are stored in the data storage unit 48 of the storage device 32.
  • the physical quantity acquisition unit 38 acquires physical quantities indicating the state of the injection molding machine 16 from the injection molding machine 16 and the external sensor 50.
  • Examples of physical quantities indicating the state of the injection molding machine 16 include the screw position, screw speed, and cylinder temperature.
  • the physical quantities are detected by sensors installed in the injection molding machine 16. Examples of sensors installed in the injection molding machine 16 include sensors that detect the screw position and screw speed, and sensors that detect the screw rotation torque.
  • the physical quantities are also detected by external sensors 50.
  • the external sensors 50 include sensors that are included in the mold, and sensors that are attached to the molding machine body after the injection molding machine 16 is shipped.
  • the external sensors 50 include sensors that detect the resin flow rate, and sensors that detect the resin pressure.
  • the physical quantities acquired by the physical quantity acquisition unit 38 are stored in a data storage unit 48 provided in the storage device 32.
  • the control unit 42 outputs a control command associated with the interlock signal to the injection molding machine 16.
  • the control command is output to the injection molding machine 16 by turning ON an output signal at an address of the I/O unit 34 associated with the control command.
  • the control command is not only output to the molding machine body of the injection molding machine 16, but is also output to a robot or the like provided on the molding machine body. This allows interlock control to be performed on the robot or the like as well.
  • the monitoring unit 44 determines that interlock control based on the control command is not being performed in the injection molding machine 16. In this case, the monitoring unit 44 forcibly terminates the operation of the injection molding machine 16. This stops the operation of the injection molding machine 16.
  • the monitoring unit 44 may display an alarm message on the display device of the injection molding machine 16 indicating that interlock control based on the control command is not being performed. Instead of the monitoring unit 44 forcibly terminating the operation of the injection molding machine 16, the monitoring unit 44 may cause the injection molding machine 16 to interrupt the molding process being performed and proceed to the next molding process. Also, instead of the monitoring unit 44 forcibly terminating the operation of the injection molding machine 16, the monitoring unit 44 may stop the control unit 42 from outputting the control command to the injection molding machine 16, and cause the injection molding machine 16 to stop the interlock control based on the control command.
  • the monitoring time is set by the user. Setting the monitoring time will be described in detail later.
  • FIG. 5 shows examples of options related to interlock signals.
  • the options differ depending on the model of the injection molding machine 16. Even for the same model of injection molding machine 16, the options may differ depending on the type of external sensor 50 connected.
  • the options include options related to the molding process, options related to monitor values, and options related to control commands.
  • the options related to monitor values and options related to control commands that can be selected are limited depending on the option related to the molding process selected.
  • options related to the molding process are managed by a table that associates options related to monitor values and options related to control commands. This table is prepared by the manufacturer of the injection molding machine.
  • the options for the molding process are set to "injection process,” "weighing process,” “mold closing process,” “ejection process,” “all processes,” etc.
  • the options for the monitor values associated with the "injection process” are set as "screw position,” “screw speed,” “nozzle temperature,” “cylinder temperature,” “external sensor 1,” “external sensor 2,” etc.
  • the options for the control command associated with the "injection process” are “permit injection operation,” “interrupt injection process and proceed to pressure holding process,” “prohibit mold closing operation,” “permit mold loosening operation,” “prohibit mold loosening operation,” “prohibit changes to mold loosening operation conditions,” etc.
  • FIG. 6 shows examples of options related to interlock signals.
  • the options shown in FIG. 6 include options related to the comparison method for determining whether the monitor value is larger or smaller than the threshold value.
  • Options related to the comparison method are not associated with options related to the molding process, and are managed in a table separate from the table shown in FIG. 5. This table is prepared by the manufacturer of the injection molding machine.
  • FIG. 7 is a diagram showing the calculation condition setting screen 52.
  • the calculation condition setting screen 52 is displayed on a display device of the input device 12.
  • the calculation condition setting screen 52 may be displayed on a display device external to the control system 10.
  • the calculation condition setting screen 52 displays a name input section 54, a molding process input section 56, a monitor value input section 58, a comparison method input section 60, a threshold input section 62, and a delay time input section 64.
  • the operator can input any name corresponding to each interlock signal.
  • the name input section 54 may change the thickness of the frame line to a thicker one.
  • the operator can input elements related to the molding process of the calculation conditions.
  • a pop-up display of options related to the molding process is displayed.
  • the thickness of the frame line may be changed to a thicker one.
  • the operator can input elements related to the monitor value of the calculation conditions.
  • the operator touches the monitor value input section 58 a pop-up display of options related to the monitor value is displayed.
  • the comparison method input section 60 the operator can input elements related to the comparison method of the calculation conditions.
  • the comparison method input section 60 When the operator touches the comparison method input section 60, a pop-up appears with options for the comparison method related to the monitor value shown in FIG. 6.
  • the comparison method input section 60 may change the thickness of the border to a thicker one.
  • the color of the border line or the text within the border may be changed.
  • the operator can input a threshold value.
  • the delay time input section 64 the operator can input a delay time.
  • the calculation condition setting screen 52 further displays a current value display section 66 and a status display section 68.
  • the current value display section 66 displays the current value of the physical quantity input to the monitor value input section 58.
  • the status display section 68 has an ON/OFF display section 70 and a relationship display section 72.
  • the ON/OFF display section 70 displays a solid rectangular display.
  • the ON/OFF display section 70 displays a hollow rectangular display.
  • the relationship display section 72 displays a diagram showing the relationship between the comparison method input to the comparison method input section 60 and the threshold value input to the threshold input section 62.
  • the relationship display section 72 displays a triangular display showing the current value of the physical quantity input to the monitor value input section 58.
  • FIG. 8 is a diagram showing the calculation condition setting screen 52.
  • the calculation condition setting screen 52 in FIG. 8 shows another example of the calculation condition setting screen 52 in FIG. 7.
  • the calculation condition setting screen 52 shown in FIG. 8 has a logical operator input section 74.
  • the operator can input a logical operator.
  • options related to logical operators are displayed in a pop-up.
  • the options related to logical operators include, for example, “logical product (AND),” “logical sum (OR),” “negated logical product (NAND),” “negated logical sum (NOR),” “exclusive logical sum (XOR),” etc.
  • multiple conditions for comparing the monitor value with the threshold value are set as one calculation condition.
  • "Sig.11" shown in FIG. 8 is set as one calculation condition by logical sum (OR) of two comparison conditions. If the screw position selected as the monitor value is smaller than 20.0 set as the threshold value, the interlock signal calculation unit 40 turns the interlock signal ON. Alternatively, if the screw position selected as the monitor value is equal to or greater than 30.0 set as the threshold value, the interlock signal calculation unit 40 turns the interlock signal ON.
  • the physical quantity selected as the monitor value may be different, such as the "screw position" and "clamping force" in the interlock signal "Sig.12” in FIG. 8.
  • FIG. 9 shows the control command setting screen 76.
  • the control command setting screen 76 is displayed on the display device of the input device 12.
  • the control command setting screen 76 has a signal ID input section 78, an output signal input section 80, a control command input section 82, and a monitoring time input section 84.
  • the operator can input the signal ID of the interlock signal for which a control command is to be set.
  • the operator touches the signal ID input section 78 a pop-up display of options for the signal ID is displayed.
  • the operator can input the address of the I/O unit 34 that will turn the output signal ON when the interlock signal is ON.
  • a pop-up display of address options is displayed.
  • the output signal input section 80 to which an address that turns the output signal ON has been input may change the thickness of the border to a thicker one. Note that instead of or in addition to changing the thickness of the border to a thicker one, the output signal input section 80 may change the color of the border or the text within the border.
  • the operator can input a control command.
  • options related to the control command are displayed as a pop-up.
  • the monitoring time input section 84 the operator can input a monitoring time.
  • the monitoring time is the time during which it is monitored whether or not interlock control based on the control command selected in the control command input section 82 has been performed in the injection molding machine 16. If it is determined that interlock control based on a control command has not been performed in the injection molding machine 16, the monitoring section 44 can, for example, force the operation of the injection molding machine 16 to terminate. This causes the operation of the injection molding machine 16 to stop.
  • the control command "interrupt the injection process and proceed to the pressure holding process” is set in the injection process to which "Sig.2" belongs.
  • the control command "interrupt the injection process and proceed to the pressure holding process” is set in the injection process to which "Sig.5" belongs.
  • the monitoring time is set by the operator, and the monitoring unit 44 monitors whether interlock control has been performed at the time desired by the operator.
  • control command setting screen 76 it is not necessary to set corresponding control commands for all interlock signals.
  • the operator may select desired interlock signals and set control commands for the selected interlock signals. This allows the operator to easily select whether or not to execute a control command based on an interlock signal.
  • [Processing in each device] 10 is a flowchart showing the process executed by the input device 12. This process is repeatedly executed at a predetermined cycle.
  • step S1 the option acquisition unit 26 acquires options related to the interlock signal from the option storage unit 46 provided in the storage device 32 of the control device 14. Then, the process proceeds to step S2.
  • step S2 the input reception unit 28 receives input of the calculation conditions that are generated by the operator selecting an option. Then, the process ends.
  • FIG. 11 is a flowchart showing the process executed by the control device 14. This process is executed repeatedly at a predetermined interval.
  • step S11 the calculation condition acquisition unit 36 acquires the calculation conditions accepted by the input acceptance unit 28 of the input device 12. Then, the process proceeds to step S12.
  • step S12 the physical quantity acquisition unit 38 acquires physical quantities indicating the state of the injection molding machine 16 from the injection molding machine 16 and the external sensor 50. Then, the process proceeds to step S13.
  • step S13 the interlock signal calculation unit 40 determines whether the physical quantity acquired by the physical quantity acquisition unit 38 satisfies the calculation condition stored in the data storage unit 48. If the physical quantity satisfies the calculation condition, the process proceeds to step S14. If the physical quantity does not satisfy the calculation condition, the process proceeds to step S15.
  • step S14 the interlock signal calculation unit 40 turns the interlock signal ON. Then, the process proceeds to step S16.
  • step S15 the interlock signal calculation unit 40 turns off the interlock signal. Then, the process proceeds to step S16.
  • step S16 the control unit 42 outputs a control command associated with the interlock signal to the injection molding machine 16.
  • step S17 the monitoring unit 44 determines whether or not interlock control based on a control command has been performed in the injection molding machine 16. If interlock control based on a control command has been performed in the injection molding machine 16, the process ends. If interlock control based on a control command has not been performed in the injection molding machine 16, the process proceeds to step S18.
  • step S18 the monitoring unit 44 forcibly terminates the operation of the injection molding machine 16. This stops the operation of the injection molding machine 16. Then, the process ends.
  • the monitoring unit 44 judges whether or not the interlock control based on the control command has been performed in the injection molding machine 16 based on the physical quantity indicating the state of the injection molding machine 16. If the interlock control based on the control command is not being performed in the injection molding machine 16, the monitoring unit 44 forcibly terminates the operation of the injection molding machine 16. This stops the operation of the injection molding machine 16. Alternatively, if the interlock control based on the control command is not being performed in the injection molding machine 16, the monitoring unit 44 may stop the output of the control command to the injection molding machine 16 by the control unit 42, and may stop the interlock control based on the control command in the injection molding machine 16. Alternatively, if the interlock control based on the control command is not being performed in the injection molding machine 16, the monitoring unit 44 may cause the injection molding machine 16 to interrupt the molding process being performed and proceed to the next molding process.
  • control system 10 can prevent damage to the injection molding machine 16 and prolonged molding times even when interlock control is not being performed on the injection molding machine 16.
  • the control system 10 of this embodiment has an input device 12 and a control device 14 associated with each of the injection molding machines 16.
  • the option acquisition unit 26 of the input device 12 acquires options related to interlock signals from each of the control devices 14.
  • the input acceptance unit 28 of the input device 12 accepts the input of calculation conditions that are generated by the operator selecting an option.
  • the operator can set the calculation conditions by selecting an option that is set corresponding to the injection molding machine 16. Therefore, the operator can easily set the calculation conditions. In addition, the operator can reduce the possibility of setting the calculation conditions incorrectly.
  • control system 10 of this embodiment presents the operator with a selection of methods for comparing the monitor value with the threshold value under the comparison conditions. This allows the operator to set in detail the conditions that stipulate the period during which the injection molding machine 16 is to perform interlock control. This allows the period during which a specified operation is prohibited by interlock control to be set as short as possible. This allows the cycle time for manufacturing molded products in the injection molding machine 16 to be shortened, and the molding cycle can be safely repeated.
  • control system 10 of this embodiment can set the physical quantity detected by the external sensor 50 attached to the injection molding machine 16 after the shipment of the injection molding machine 16 as a monitor value in the calculation conditions. For example, if a temperature sensor is attached to the mold as the external sensor 50, an interlock signal can be calculated that outputs a control command to permit operation of the injection molding machine 16 when the temperature detected by the temperature sensor rises to a predetermined temperature. This allows the control system 10 to improve the yield of molded products manufactured by the injection molding machine 16. In addition, the control system 10 can avoid damage to the mold, etc., caused by operating the injection molding machine 16 when the mold is at a low temperature.
  • the display device of the input device 12 displays a calculation condition setting screen 52.
  • the calculation condition setting screen 52 displays the current values of the physical quantities selected as monitor values, along with a display for setting the calculation conditions. This allows the operator to set the calculation conditions while checking the state of the injection molding machine 16 using the current values of the physical quantities, etc.
  • the input device 12 can transmit the same calculation conditions via the communication network 18 to each of a plurality of control devices 14 for which the same calculation conditions are set. This allows the control system 10 to reduce the amount of work required by the operator to set calculation conditions for each of the control devices 14.
  • Control system overview 12 is a schematic diagram of a control system 10 of this embodiment.
  • the control system 10 has one input device 12, one management device 90, and multiple control devices 14.
  • the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted.
  • the management device 90 is a personal computer or the like.
  • the management device 90 may have a display device such as a liquid crystal display or an organic EL (Electro Luminescence) display.
  • the management device 90 may also have input devices such as a keyboard and a mouse.
  • the input device 12, the management device 90, and the control device 14 are connected to the communication network 18.
  • the input device 12, the management device 90, and the control device 14 are arranged to be able to communicate with each other via the communication network 18.
  • the control system 10 may have one input device 12, one management device 90, and one control device 14.
  • the control system 10 may also have multiple input devices 12, multiple management devices 90, and multiple control devices 14.
  • the input device 12 and the management device 90 are not used as dedicated devices for one control device 14, but are used as shared devices for multiple control devices 14.
  • Control system configuration 13 and 14 are block diagrams showing the configuration of the control system 10.
  • the input device 12 of this embodiment like the input device 12 of the first embodiment, includes a processor 22 and a storage device 24.
  • the processor 22 includes an option acquisition unit 92 and an input acceptance unit 94.
  • the option acquisition unit 92 acquires options related to the interlock signal from an option storage unit 110 provided in the storage device 98 of the management device 90.
  • the input reception unit 94 receives input of calculation conditions generated by the operator selecting an option.
  • the calculation conditions are generated as conditions corresponding to the injection molding machine 16 associated with the option used for generation.
  • the input reception unit 94 may receive input of calculation conditions stored in a flash memory connected to the input device 12.
  • the flash memory stores calculation conditions corresponding to each of the injection molding machines 16.
  • the calculation conditions accepted by the input accepting unit 94 are sent to the management device 90.
  • the management device 90 includes a processing device 96 and a storage device 98.
  • the processing device 96 is, for example, a processor such as a central processing unit (CPU) or a graphics processing unit (GPU).
  • the processing device 96 includes a calculation condition acquisition unit 100, a calculation condition transmission unit 102, a physical quantity reception unit 104, an interlock signal calculation unit 106, and a control command transmission unit 108.
  • the calculation condition acquisition unit 100, the calculation condition transmission unit 102, the physical quantity reception unit 104, the interlock signal calculation unit 106, and the control command transmission unit 108 are realized by the processing device 96 executing a program stored in the storage device 98.
  • At least a part of the calculation condition acquisition unit 100, the calculation condition transmission unit 102, the physical quantity reception unit 104, the interlock signal calculation unit 106, and the control command transmission unit 108 may be realized by an integrated circuit such as an application specific integrated circuit (ASIC) or a field-programmable gate array (FPGA). At least a portion of the calculation condition acquisition unit 100, the calculation condition transmission unit 102, the physical quantity reception unit 104, the interlock signal calculation unit 106, and the control command transmission unit 108 may be realized by electronic circuits including discrete devices.
  • ASIC application specific integrated circuit
  • FPGA field-programmable gate array
  • the storage device 98 is composed of a volatile memory (not shown) and a non-volatile memory (not shown), which are computer-readable storage media.
  • the storage device 98 has an option storage unit 110 and a calculation condition storage unit 112.
  • the volatile memory is, for example, a RAM (Random Access Memory), etc.
  • the non-volatile memory is, for example, a ROM (Read Only Memory), a flash memory, etc. Data, etc. are stored, for example, in the volatile memory. Programs, tables, maps, etc. are stored, for example, in the non-volatile memory.
  • At least a part of the storage device 98 may be provided in the above-mentioned processor, integrated circuit, etc.
  • At least a part of the storage device 98 may be mounted on a device connected to the management device 90 by the communication network 18.
  • the calculation condition acquisition unit 100 acquires the calculation conditions accepted by the input acceptance unit 94 of the input device 12.
  • the calculation conditions acquired by the calculation condition acquisition unit 100 are stored in the calculation condition storage unit 112 of the storage device 98.
  • the calculation condition transmission unit 102 transmits the calculation conditions stored in the calculation condition storage unit 112 to the control device 14.
  • the physical quantity reception unit 104 receives the physical quantities transmitted by the control device 14.
  • the interlock signal calculation unit 106 turns on the interlock signal when the physical quantity received by the physical quantity receiving unit 104 satisfies the calculation conditions stored in the calculation condition storage unit 112.
  • the control command transmission unit 108 transmits a control command associated with the interlock signal to the control device 14.
  • the control device 14 of this embodiment like the control device 14 of the first embodiment, has a calculation processing device 30, a storage device 32, and an I/O unit 34.
  • the calculation processing device 30 has a calculation condition receiving unit 114, a physical quantity acquiring unit 116, a physical quantity extracting unit 118, a physical quantity transmitting unit 120, a control command receiving unit 122, a control unit 124, and a monitoring unit 126.
  • the storage device 32 has a data storage unit 128.
  • the calculation condition receiving unit 114 receives the calculation conditions transmitted from the calculation condition transmitting unit 102 of the management device 90.
  • the calculation conditions received by the calculation condition receiving unit 114 are stored in the data storage unit 128 of the storage device 32.
  • the physical quantity acquisition unit 116 acquires physical quantities indicating the state of the injection molding machine 16 from the injection molding machine 16 and the external sensor 50.
  • the physical quantities acquired by the physical quantity acquisition unit 116 are stored in a data storage unit 128 provided in the storage device 32.
  • the physical quantity extraction unit 118 extracts data on physical quantities that are set as elements (monitor values) of the calculation conditions received by the calculation condition receiving unit 114 from the physical quantity data stored in the data storage unit 128. For example, if the screw position is set as a monitor value in the calculation conditions, the physical quantity extraction unit 118 extracts data on the screw position from the data storage unit 128.
  • the physical quantity transmission unit 120 transmits the data of the physical quantities extracted by the physical quantity extraction unit 118 to the physical quantity reception unit 104 of the management device 90.
  • the control command receiving unit 122 receives the control command sent from the control command sending unit 108 of the management device 90.
  • the control unit 124 outputs the control command received by the control command receiving unit 122 to the injection molding machine 16.
  • the control command is output to the injection molding machine 16 by turning ON the output signal at the address of the I/O unit 34 that is associated with the control command.
  • the monitoring unit 126 monitors the physical quantity corresponding to the control command output from the control unit 124. If the physical quantity corresponding to the control command is not a value based on the control command when a predetermined monitoring time has elapsed since the control command was output from the control unit 124, the monitoring unit 126 forcibly terminates the operation of the injection molding machine 16. This stops the operation of the injection molding machine 16. Instead of or in addition to the monitoring unit 126 forcibly terminating the operation of the injection molding machine 16, the monitoring unit 126 may display an alarm message on the display device of the injection molding machine 16 indicating that interlock control is not being performed.
  • [Processing in each device] 15 is a flowchart showing the process executed by the input device 12. This process is repeatedly executed at a predetermined cycle.
  • step S21 the option acquisition unit 92 acquires options related to the interlock signal from the option storage unit 110 provided in the storage device 98 of the management device 90. Then, the process proceeds to step S22.
  • step S22 the input reception unit 94 receives input of the calculation conditions generated by the operator selecting an option. Then, the process ends.
  • FIG. 16 is a flowchart showing the process executed by the management device 90. This process is executed repeatedly at a predetermined interval.
  • step S31 the calculation condition acquisition unit 100 acquires the calculation conditions accepted by the input acceptance unit 94 of the input device 12. Then, the process proceeds to step S32.
  • step S32 the calculation condition transmission unit 102 transmits the calculation conditions stored in the calculation condition storage unit 112 to the control device 14. Then, the process proceeds to step S33.
  • step S33 the physical quantity receiving unit 104 receives the physical quantity transmitted by the physical quantity transmitting unit 120 of the control device 14. Then, the process proceeds to step S34.
  • step S34 the interlock signal calculation unit 106 determines whether the physical quantity received by the physical quantity receiving unit 104 satisfies the calculation condition stored in the calculation condition storage unit 112. If the physical quantity satisfies the calculation condition, the process proceeds to step S35. If the physical quantity does not satisfy the calculation condition, the process proceeds to step S36.
  • step S35 the interlock signal calculation unit 40 turns the interlock signal ON. Then, the process proceeds to step S37.
  • step S36 the interlock signal calculation unit 40 turns off the interlock signal. Then, the process proceeds to step S37.
  • step S37 the control command transmission unit 108 transmits a control command associated with the interlock signal to the control device 14. Then, the process ends.
  • FIG. 17 is a flowchart showing the process executed by the control device 14. This process is executed repeatedly at a predetermined interval.
  • step S41 the calculation condition receiving unit 114 receives the calculation conditions transmitted from the calculation condition transmitting unit 102 of the management device 90. Then, the process proceeds to step S42.
  • step S42 the physical quantity acquisition unit 116 acquires physical quantities indicating the state of the injection molding machine 16 from the injection molding machine 16 and the external sensor 50. Then, the process proceeds to step S43.
  • step S43 the physical quantity extraction unit 118 extracts the physical quantity data set as elements (monitor values) of the calculation conditions received by the calculation condition receiving unit 114 from the physical quantity data stored in the data storage unit 128. Then, the process proceeds to step S44.
  • step S44 the physical quantity transmission unit 120 transmits the data on the physical quantities extracted by the physical quantity extraction unit 118 to the management device 90. Then, the process proceeds to step S45.
  • step S45 the control command receiving unit 122 receives the control command transmitted from the control command transmitting unit 108 of the management device 90. Then, the process proceeds to step S46.
  • step S46 the control unit 124 outputs the control command received by the control command receiving unit 122 to the injection molding machine 16. Then, the process proceeds to step S47.
  • step S47 the monitoring unit 126 determines whether or not interlock control based on a control command has been performed in the injection molding machine 16. If interlock control based on a control command has been performed in the injection molding machine 16, the process ends. If interlock control based on a control command has not been performed in the injection molding machine 16, the process proceeds to step S48.
  • step S48 the monitoring unit 126 forcibly terminates the operation of the injection molding machine 16. This stops the operation of the injection molding machine 16. Then, the process ends.
  • the control system 10 of this embodiment includes a management device 90.
  • Options stored in an option storage unit 110 of the management device 90 are sent to the input device 12.
  • a calculation condition acquisition unit 100 of the management device 90 acquires calculation conditions inputted and accepted by an input acceptance unit 94 of the input device 12.
  • An interlock signal calculation unit 106 of the management device 90 calculates an interlock signal.
  • a control command transmission unit 108 of the management device 90 transmits a control command associated with the interlock signal to the control device 14.
  • the management device 90 exchanges data with the input device 12, calculates the interlock signal, and outputs a control signal corresponding to the interlock signal.
  • the control device 14 performs calculation processing related to the control of the injection molding machine 16, and other calculation processing related to interlock control is performed by the management device 90.
  • the control system 10 can reduce the calculation load on the control device 14.
  • the control system is a system for controlling at least one of the injection molding machines, and includes an option acquisition unit (26) that acquires options related to an interlock signal corresponding to each of the injection molding machines, an input receiving unit (28) that accepts input of calculation conditions that are conditions for calculating the interlock signal corresponding to each of the injection molding machines and are generated by an operator selecting the option, a calculation condition acquisition unit (36) that acquires the calculation conditions, and an interlock signal calculation unit (40) that calculates the interlock signal for the injection molding machine based on the calculation conditions when the physical quantity in the injection molding machine that corresponds to the calculation conditions satisfies the calculation conditions, and the control unit may control the injection molding machine based on the control command associated with the interlock signal for the injection molding machine.
  • an option acquisition unit (26) that acquires options related to an interlock signal corresponding to each of the injection molding machines
  • an input receiving unit (28) that accepts input of calculation conditions that are conditions for calculating the interlock signal corresponding to each of the injection molding machines and are generated by an operator selecting the option
  • the control system is a system for controlling at least one of the injection molding machines, and includes: an option acquisition unit (92) that acquires options related to an interlock signal associated with each of the injection molding machines; an input receiving unit (94) that accepts input of calculation conditions that are conditions for calculating an interlock signal corresponding to each of the injection molding machines and are generated by an operator selecting the option; a control device (14) provided for each of the injection molding machines; and a management device (90) provided to be able to communicate with the control device, wherein the management device includes: a calculation condition acquisition unit (100) that acquires the calculation conditions corresponding to the injection molding machine; and an interlock signal calculation unit (106) that calculates the interlock signal for the injection molding machine based on the calculation conditions when the physical quantity acquired by the physical quantity acquisition unit satisfies the calculation conditions, and the control device includes the physical quantity acquisition unit, the control unit, and the monitoring unit, and the control unit may control the injection molding machine based on the control command associated with the
  • the options may include at least one of an option to select a molding process, an option to select the physical quantity, an option to select a comparison method for comparing the magnitude relationship between the selected physical quantity and a threshold value, and an option to select the control command to be associated with the interlock signal.
  • the calculation conditions may include conditions for a molding process, conditions for a magnitude relationship between the physical quantity and a threshold value, and the control command corresponding to the interlock signal.
  • the calculation conditions may include a condition for the molding process and a delay time from when a condition for a magnitude relationship between the physical quantity and a threshold value is satisfied to when the interlock signal is output.
  • the control command may include at least one of a command to stop operation of the injection molding machine, a command to permit operation in a specified molding process, a command to prohibit operation in a specified molding process, a command to permit operation of a peripheral device, a command to prohibit operation of a peripheral device, a command to interrupt execution of a current molding process and execute a next molding process, a command to permit a change in operating conditions of the injection molding machine, and a command to prohibit a change in the operating conditions of the injection molding machine.
  • the control system according to any one of Supplementary Notes 2 to 7 may further include an input device (12) that accepts input from the operator, and the input device may have the option acquisition unit and the input acceptance unit.
  • the input device may transmit the calculation conditions to a control device provided for each of the multiple injection molding machines connected via a network.
  • the physical quantity may be detected by a sensor included in a mold, or a sensor attached to the injection molding machine after the injection molding machine is shipped.
  • a control method in a control system (10) that controls an injection molding machine acquires physical quantities indicating a state of the injection molding machine, controls the injection molding machine based on a control command that performs interlock control on the injection molding machine, monitors whether or not an operation based on the control command has been performed in the injection molding machine based on the physical quantities in the injection molding machine, and, if an operation based on the control command has not been performed in the injection molding machine after a predetermined time has elapsed since control of the injection molding machine based on the control command was started, discontinues control of the injection molding machine based on the control command or stops operation of the injection molding machine.
  • REFERENCE SIGNS LIST 10 control system 12... input device 14... control device 16... injection molding machine 26, 92... option acquisition unit 28, 94... input reception unit 36, 100... calculation condition acquisition unit 38, 116... physical quantity acquisition unit 40, 106... interlock signal calculation unit 42, 124... control unit 44, 126... monitoring unit 72... relationship display unit 90... management device

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  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

According to an aspect of the present disclosure, a control system that controls an injection molding machine is provided. The control system acquires a physical amount showing a state of the injection molding machine, controls the injection molding machine on the basis of a control instruction to perform interlock control on the injection molding machine, monitors whether the operation based on the control instruction has been performed in the injection molding machine on the basis of the physical amount in the injection molding machine, and stops an operation of the injection molding machine when the operation based on the control instruction has not been performed in the injection molding machine after a prescribed time has elapsed since the start of control of the injection molding machine based on the control instruction.

Description

制御システム及び制御方法Control system and control method
　本開示は、制御システム及び制御方法に関する。 This disclosure relates to a control system and a control method.
　特開２０２０－１２１５４８号公報には、操作ボタンの押し間違えを防止するインタロック機能を有する射出成形機が開示されている。 JP 2020-121548 A discloses an injection molding machine with an interlock function that prevents pressing the wrong operation button.
　インタロック機能が作動しない場合における制御も考慮された射出成形機が望まれる。 An injection molding machine that also takes into consideration control in the event that the interlock function does not work is desirable.
　本開示の第１の態様は、射出成形機を制御する制御システムであって、当該制御システムは、前記射出成形機の状態を示す物理量を取得する物理量取得部と、前記射出成形機に対してインタロック制御を行う制御指令に基づいて、前記射出成形機を制御する制御部と、前記射出成形機における前記物理量に基づき、前記射出成形機において前記制御指令に基づく動作が行われたか否かを監視する監視部と、を備え、前記監視部は、前記制御部から前記制御指令を受信してから所定時間経過した後に、前記射出成形機において前記制御指令に基づく動作が行われない場合、前記制御指令に基づく前記射出成形機の制御を中止又は前記射出成形機の運転を停止させる。 A first aspect of the present disclosure is a control system for controlling an injection molding machine, the control system comprising: a physical quantity acquisition unit that acquires physical quantities indicating a state of the injection molding machine; a control unit that controls the injection molding machine based on a control command that performs interlock control on the injection molding machine; and a monitoring unit that monitors whether the injection molding machine has performed an operation based on the control command based on the physical quantities in the injection molding machine, and if the injection molding machine has not performed an operation based on the control command after a predetermined time has elapsed since receiving the control command from the control unit, the monitoring unit discontinues control of the injection molding machine based on the control command or stops operation of the injection molding machine.
　本開示の第２の態様は、射出成形機を制御する制御システムにおける制御方法であって、前記射出成形機の状態を示す物理量を取得し、前記射出成形機に対してインタロック制御を行う制御指令に基づいて、前記射出成形機を制御し、前記射出成形機における前記物理量に基づき、前記射出成形機において前記制御指令に基づく動作が行われたか否かを監視し、前記制御指令に基づく前記射出成形機の制御が開始されてから所定時間経過した後に、前記射出成形機において前記制御指令に基づく動作が行われない場合、前記制御指令に基づく前記射出成形機の制御を中止又は前記射出成形機の運転を停止させる。 A second aspect of the present disclosure is a control method in a control system that controls an injection molding machine, which obtains physical quantities indicating the state of the injection molding machine, controls the injection molding machine based on control commands that perform interlock control on the injection molding machine, monitors whether the injection molding machine has performed an operation based on the control command based on the physical quantities in the injection molding machine, and, if the injection molding machine has not performed an operation based on the control command after a predetermined time has elapsed since control of the injection molding machine based on the control command was started, stops control of the injection molding machine based on the control command or stops operation of the injection molding machine.
図１は、制御システムの模式図である。FIG. 1 is a schematic diagram of the control system. 図２は、算出条件の例を示す表である。FIG. 2 is a table showing an example of calculation conditions. 図３は、スクリュ位置、及び、インタロック信号のタイムチャートである。FIG. 3 is a time chart of the screw position and the interlock signal. 図４は、制御システムの構成を示すブロック図である。FIG. 4 is a block diagram showing the configuration of the control system. 図５は、インタロック信号に係る選択肢の例を示す図である。FIG. 5 is a diagram showing examples of options related to the interlock signal. 図６は、インタロック信号に係る選択肢の例を示す図である。FIG. 6 is a diagram showing examples of options related to the interlock signal. 図７は、算出条件設定画面を示す図である。FIG. 7 is a diagram showing a calculation condition setting screen. 図８は、算出条件設定画面を示す図である。FIG. 8 is a diagram showing a calculation condition setting screen. 図９は、制御指令設定画面を示す図である。FIG. 9 is a diagram showing a control command setting screen. 図１０は、入力装置において実行される処理を示すフローチャートである。FIG. 10 is a flowchart showing the process executed in the input device. 図１１は、制御装置において実行される処理を示すフローチャートである。FIG. 11 is a flowchart showing the process executed in the control device. 図１２は、本実施形態の制御システムの模式図である。FIG. 12 is a schematic diagram of the control system of this embodiment. 図１３は、制御システムの構成を示すブロック図である。FIG. 13 is a block diagram showing the configuration of the control system. 図１４は、制御システムの構成を示すブロック図である。FIG. 14 is a block diagram showing the configuration of the control system. 図１５は、入力装置において実行される処理を示すフローチャートである。FIG. 15 is a flowchart showing the process executed in the input device. 図１６は、管理装置において実行される処理を示すフローチャートである。FIG. 16 is a flowchart showing the process executed in the management device. 図１７は、制御装置において実行される処理を示すフローチャートである。FIG. 17 is a flowchart showing the process executed in the control device.
　例えば、スクリュ位置といった射出成形機の状態を示す物理量が所定の条件を満たす場合、射出成形機、射出成形機に設置される金型及びロボット等における所定の動作を許可又は禁止するインタロック制御が行われる。 For example, when a physical quantity indicating the state of the injection molding machine, such as the screw position, satisfies a certain condition, interlock control is performed to permit or prohibit certain operations of the injection molding machine, the mold installed in the injection molding machine, the robot, etc.
　制御装置から射出成形機にインタロック制御を行わせる制御指令が出力された場合であっても、射出成形機において制御指令に基づいた動作が行われないことがある。この場合、射出成形機の破損、成形時間の長期化等が生じる問題がある。 Even if the control device outputs a control command to the injection molding machine to perform interlock control, the injection molding machine may not operate according to the control command. In this case, there are problems such as damage to the injection molding machine and longer molding times.
　そこで、本開示では、射出成形機においてインタロック制御が行われない場合であっても、射出成形機の破損、成形時間の長期化等を低減できる制御システム及び制御方法を提供することを課題とする。 The objective of this disclosure is to provide a control system and control method that can reduce damage to the injection molding machine, prolonged molding times, etc., even when interlock control is not performed in the injection molding machine.
　〔第１の実施形態〕
　［制御システムの概要］
　図１は、本実施形態の制御システム１０の模式図である。制御システム１０は、１台の入力装置１２、及び、複数台の制御装置１４を有する。 First Embodiment
[Control system overview]
1 is a schematic diagram of a control system 10 according to the present embodiment. The control system 10 includes one input device 12 and a plurality of control devices 14.
　入力装置１２は、例えば、タブレット型端末、スマートフォン等である。入力装置１２は、液晶ディスプレイ、有機ＥＬ(Electro Luminescence)ディスプレイ等の表示機器を有する。また、入力装置１２は、タッチパネル等の入力機器を有する。入力装置１２は、オペレータにより入力機器が操作されて情報が入力される。入力装置１２にＵＳＢメモリ、メモリカード等のフラッシュメモリが接続され、フラッシュメモリから入力装置１２に情報が入力されてもよい。入力装置１２は、パーソナルコンピュータ等であってもよい。 The input device 12 is, for example, a tablet terminal, a smartphone, etc. The input device 12 has a display device such as a liquid crystal display, an organic EL (Electro Luminescence) display, etc. The input device 12 also has an input device such as a touch panel. An operator operates the input device to input information into the input device 12. A flash memory such as a USB memory or a memory card may be connected to the input device 12, and information may be input from the flash memory to the input device 12. The input device 12 may also be a personal computer, etc.
　制御装置１４の各々は、射出成形機１６の各々に対応付けられて設けられる。制御装置１４は、液晶ディスプレイ、有機ＥＬディスプレイ等の表示機器を有する。また、制御装置１４は、タッチパネル等の入力機器を有する。制御装置１４は、入力機器として、キーボード、マウス等を有してもよい。制御装置１４に、ＵＳＢメモリ、メモリカード等のフラッシュメモリが接続されてもよい。 Each of the control devices 14 is provided in correspondence with each of the injection molding machines 16. The control devices 14 have display devices such as a liquid crystal display and an organic EL display. The control devices 14 also have input devices such as a touch panel. The control devices 14 may also have input devices such as a keyboard and a mouse. A flash memory such as a USB memory or a memory card may be connected to the control devices 14.
　射出成形機１６には、成形機本体に取り付けられる金型、金型から成形品を取り出すロボット等が含まれてもよい。ロボットは、本発明の周辺機器に相当する。 The injection molding machine 16 may include a mold that is attached to the molding machine body, a robot that removes the molded product from the mold, etc. The robot corresponds to the peripheral device of the present invention.
　入力装置１２及び制御装置１４は、通信ネットワーク１８に接続される。入力装置１２と制御装置１４とは、通信ネットワーク１８を介して通信可能に設けられる。通信ネットワーク１８は、ＬＡＮ(Local Area Network)、ＷＡＮ(Wide Area Network)、インターネット等であり、有線であっても無線であってもよい。 The input device 12 and the control device 14 are connected to a communication network 18. The input device 12 and the control device 14 are arranged to be able to communicate with each other via the communication network 18. The communication network 18 may be a LAN (Local Area Network), a WAN (Wide Area Network), the Internet, etc., and may be wired or wireless.
　制御システム１０は、１台の入力装置１２、及び、１台の制御装置１４を有してもよい。また、制御システム１０は、複数台の入力装置１２、及び、複数台の制御装置１４を有してもよい。入力装置１２は、１台の制御装置１４に対する専用の装置として用いられるものではなく、複数台の制御装置１４に対して共有の装置として用いられる。 The control system 10 may have one input device 12 and one control device 14. The control system 10 may also have multiple input devices 12 and multiple control devices 14. The input device 12 is not used as a dedicated device for one control device 14, but is used as a shared device for multiple control devices 14.
　通信ネットワーク１８には、入力装置１２、制御装置１４の他、サーバ２０等の他の装置が接続されてもよい。 In addition to the input device 12 and the control device 14, other devices such as a server 20 may also be connected to the communication network 18.
　オペレータにより入力装置１２に入力された情報によって、算出条件が生成される。算出条件は、インタロック信号を算出するための条件である。 Calculation conditions are generated based on the information input by the operator to the input device 12. The calculation conditions are conditions for calculating the interlock signal.
　図２は、算出条件の例を示す表である。インタロック信号は、ＯＮ／ＯＦＦ信号である。インタロック信号がＯＮである期間、射出成形機１６においてインタロック制御が行われる。算出条件は、インタロック信号をＯＮとする期間を規定する条件と、インタロック信号に対応付けられる制御指令とからなる。 FIG. 2 is a table showing examples of calculation conditions. The interlock signal is an ON/OFF signal. Interlock control is performed in the injection molding machine 16 while the interlock signal is ON. The calculation conditions consist of a condition that specifies the period during which the interlock signal is ON, and a control command that is associated with the interlock signal.
　例えば、図２の算出条件では、インタロック信号「Ｓｉｇ．１」をＯＮとする期間を規定する条件として、成形工程が射出工程であること、及び、モニタ値（スクリュ位置）が閾値１０．０［ｍｍ］より大きいことの条件が設定される。インタロック信号「Ｓｉｇ．１」は、前述の条件が成立した時点から遅延時間０．１［ｓ］後にＯＮとなる。 For example, in the calculation conditions of FIG. 2, the conditions that stipulate the period during which the interlock signal "Sig.1" is ON are set such that the molding process is the injection process and that the monitor value (screw position) is greater than a threshold value of 10.0 [mm]. The interlock signal "Sig.1" is turned ON after a delay time of 0.1 [s] from the point in time when the aforementioned conditions are met.
　図３は、スクリュ位置、及び、インタロック信号「Ｓｉｇ．１」のタイムチャートである。図３に示すように、時点Ｔ１～時点Ｔ２の期間において、インタロック信号「Ｓｉｇ．１」がＯＮとなる。時点Ｔ１は、スクリュ位置がインタロック信号「Ｓｉｇ．１」の算出条件を満たした時点から、遅延時間０．１［ｓ］が経過した時点である。時点Ｔ２は、スクリュ位置がインタロック信号「Ｓｉｇ．１」の算出条件を満たさなくなる時点である。 Figure 3 is a time chart of the screw position and interlock signal "Sig.1". As shown in Figure 3, in the period from time T1 to time T2, the interlock signal "Sig.1" is ON. Time T1 is the time when a delay time of 0.1 [s] has elapsed since the screw position satisfied the calculation conditions for the interlock signal "Sig.1". Time T2 is the time when the screw position no longer satisfies the calculation conditions for the interlock signal "Sig.1".
　図３では、時間Ｔ３～時点Ｔ４の期間において、モニタ値（スクリュ位置）が閾値１０．０［ｍｍ］より大きいことの条件を満たす。しかし、成形工程が算出条件に規定された射出工程とは異なる計量工程であるため、インタロック信号「Ｓｉｇ．１」はＯＦＦとなる。 In Figure 3, the condition that the monitor value (screw position) is greater than the threshold value of 10.0 [mm] is met during the period from time T3 to time T4. However, because the molding process is a metering process that is different from the injection process specified in the calculation conditions, the interlock signal "Sig.1" is OFF.
　図２の算出条件では、インタロック信号「Ｓｉｇ．１」がＯＮである場合、後述する制御装置１４のＩ／Ｏユニット３４（図４）のアドレス「Ｙ１．１」における出力信号がＯＮとなる。アドレス「Ｙ１．１」には、制御指令として「型閉じ動作を禁止」が対応付けられており、アドレス「Ｙ１．１」の出力信号がＯＮである場合、射出成形機１６において「型閉じ動作を禁止」のインタロック制御が行われる。 In the calculation conditions of FIG. 2, when the interlock signal "Sig.1" is ON, the output signal at address "Y1.1" of the I/O unit 34 (FIG. 4) of the control device 14 described below is ON. The address "Y1.1" is associated with a control command "prohibit mold closing operation", and when the output signal of address "Y1.1" is ON, interlock control of "prohibit mold closing operation" is performed in the injection molding machine 16.
　図２の「Ｉｎｊｅｃｔ１」等の名称は、インタロック信号の各々に設定される名称であって、オペレータにより任意の名称が設定される。「Ｓｉｇ．１」等の信号ＩＤからオペレータがインタロック信号の用途を判別することは困難である。オペレータがインタロック信号の各々に任意の名称を設定することにより、「Ｉｎｊｅｃｔ１」等の名称からオペレータがインタロック信号の用途を判別することが容易となる。 Names such as "Inject1" in Figure 2 are names assigned to each interlock signal, and are set arbitrarily by the operator. It is difficult for an operator to determine the purpose of an interlock signal from a signal ID such as "Sig.1." By having the operator set an arbitrary name for each interlock signal, it becomes easier for the operator to determine the purpose of an interlock signal from a name such as "Inject1."
　［制御システムの構成］
　図４は、制御システム１０の構成を示すブロック図である。 [Control system configuration]
FIG. 4 is a block diagram showing the configuration of the control system 10.
　（入力装置の構成）
　入力装置１２は、演算処理装置２２及び記憶装置２４を有する。演算処理装置２２は、例えば、ＣＰＵ(Central Processing Unit)、ＧＰＵ(Graphics Processing Unit)等のプロセッサである。演算処理装置２２は、選択肢取得部２６及び入力受付部２８を有する。選択肢取得部２６及び入力受付部２８は、記憶装置２４に記憶されているプログラムが演算処理装置２２によって実行されることで実現される。選択肢取得部２６及び入力受付部２８の少なくとも一部が、ＡＳＩＣ(Application Specific Integrated Circuit)、ＦＰＧＡ(Field-Programmable Gate Array)等の集積回路によって実現されてもよい。選択肢取得部２６及び入力受付部２８の少なくとも一部が、ディスクリートデバイスを含む電子回路によって実現されてもよい。 (Configuration of input device)
The input device 12 includes a processor 22 and a storage device 24. The processor 22 is, for example, a processor such as a central processing unit (CPU) or a graphics processing unit (GPU). The processor 22 includes an option acquisition unit 26 and an input reception unit 28. The option acquisition unit 26 and the input reception unit 28 are realized by the processor 22 executing a program stored in the storage device 24. At least a part of the option acquisition unit 26 and the input reception unit 28 may be realized by an integrated circuit such as an application specific integrated circuit (ASIC) or a field programmable gate array (FPGA). At least a part of the option acquisition unit 26 and the input reception unit 28 may be realized by an electronic circuit including a discrete device.
　記憶装置２４は、コンピュータ可読記憶媒体である、不図示の揮発性メモリ及び不図示の不揮発性メモリにより構成される。揮発性メモリは、例えば、ＲＡＭ(Random Access Memory)等である。不揮発性メモリは、例えば、ＲＯＭ(Read Only Memory)、フラッシュメモリ等である。データ等が、例えば、揮発性メモリに記憶される。プログラム、テーブル、マップ等が、例えば、不揮発性メモリに記憶される。記憶装置２４の少なくとも一部が、上述したプロセッサ、集積回路等に備えられていてもよい。記憶装置２４の少なくとも一部が、入力装置１２と通信ネットワーク１８によって接続された機器に搭載されていてもよい。 The storage device 24 is composed of a volatile memory (not shown) and a non-volatile memory (not shown), which are computer-readable storage media. The volatile memory is, for example, a RAM (Random Access Memory), etc. The non-volatile memory is, for example, a ROM (Read Only Memory), a flash memory, etc. Data, etc. are stored, for example, in the volatile memory. Programs, tables, maps, etc. are stored, for example, in the non-volatile memory. At least a part of the storage device 24 may be provided in the above-mentioned processor, integrated circuit, etc. At least a part of the storage device 24 may be mounted on a device connected to the input device 12 via the communication network 18.
　選択肢取得部２６は、制御装置１４の記憶装置３２に設けられる選択肢記憶部４６からインタロック信号に係る選択肢を取得する。選択肢記憶部４６には、予め、射出成形機１６の各々に対応付けられた選択肢が記憶される。選択肢については、後に詳述する。 The option acquisition unit 26 acquires options related to the interlock signal from an option storage unit 46 provided in the storage device 32 of the control device 14. The option storage unit 46 stores options associated with each of the injection molding machines 16 in advance. The options will be described in detail later.
　入力受付部２８は、オペレータによる選択肢の選択によって生成される算出条件の入力を受け付ける。算出条件は、生成に用いられた選択肢が対応付けられた射出成形機１６に対応する条件として生成される。入力受付部２８は、入力装置１２に接続されたフラッシュメモリに記憶される算出条件の入力を受け付けてもよい。フラッシュメモリには、射出成形機１６の各々に対応する算出条件が記憶される。 The input receiving unit 28 receives input of calculation conditions generated by the operator selecting an option. The calculation conditions are generated as conditions corresponding to the injection molding machine 16 associated with the option used for generation. The input receiving unit 28 may receive input of calculation conditions stored in a flash memory connected to the input device 12. The flash memory stores calculation conditions corresponding to each of the injection molding machines 16.
　入力受付部２８により入力が受け付けられた算出条件は、算出条件が対応する射出成形機１６を制御する制御装置１４に送信される。１つの工場内に、同機種の射出成形機１６であって、同種の金型が取り付けられ、同じ成形品を成形する射出成形機１６が複数存在する場合がある。この場合、複数の射出成形機１６に同じ算出条件が送信されてもよい。 The calculation conditions accepted by the input acceptance unit 28 are sent to the control device 14 that controls the injection molding machine 16 to which the calculation conditions correspond. In one factory, there may be multiple injection molding machines 16 of the same model, equipped with the same type of mold, and capable of molding the same molded product. In this case, the same calculation conditions may be sent to multiple injection molding machines 16.
　（制御装置の構成）
　制御装置１４は、演算処理装置３０、記憶装置３２及びＩ／Ｏユニット３４を有する。演算処理装置３０は、例えば、ＣＰＵ(Central Processing Unit)、ＧＰＵ(Graphics Processing Unit)等のプロセッサである。演算処理装置３０は、算出条件取得部３６、物理量取得部３８、インタロック信号算出部４０、制御部４２及び監視部４４を有する。算出条件取得部３６、物理量取得部３８、インタロック信号算出部４０、制御部４２及び監視部４４は、記憶装置３２に記憶されているプログラムが演算処理装置３０によって実行されることで実現される。算出条件取得部３６、物理量取得部３８、インタロック信号算出部４０、制御部４２及び監視部４４の少なくとも一部が、ＡＳＩＣ(Application Specific Integrated Circuit)、ＦＰＧＡ(Field-Programmable Gate Array)等の集積回路によって実現されてもよい。算出条件取得部３６、物理量取得部３８、インタロック信号算出部４０、制御部４２及び監視部４４の少なくとも一部が、ディスクリートデバイスを含む電子回路によって実現されてもよい。 (Configuration of the control device)
The control device 14 includes a calculation processing device 30, a storage device 32, and an I/O unit 34. The calculation processing device 30 is a processor such as a central processing unit (CPU) or a graphics processing unit (GPU). The calculation processing device 30 includes a calculation condition acquisition unit 36, a physical quantity acquisition unit 38, an interlock signal calculation unit 40, a control unit 42, and a monitoring unit 44. The calculation condition acquisition unit 36, the physical quantity acquisition unit 38, the interlock signal calculation unit 40, the control unit 42, and the monitoring unit 44 are realized by the calculation processing device 30 executing a program stored in the storage device 32. At least a part of the calculation condition acquisition unit 36, the physical quantity acquisition unit 38, the interlock signal calculation unit 40, the control unit 42, and the monitoring unit 44 may be realized by an integrated circuit such as an application specific integrated circuit (ASIC) or a field programmable gate array (FPGA). At least a portion of the calculation condition acquisition unit 36, the physical quantity acquisition unit 38, the interlock signal calculation unit 40, the control unit 42, and the monitoring unit 44 may be realized by electronic circuits including discrete devices.
　記憶装置３２は、コンピュータ可読記憶媒体である、不図示の揮発性メモリ及び不図示の不揮発性メモリにより構成される。揮発性メモリは、例えば、ＲＡＭ(Random Access Memory)等である。不揮発性メモリは、例えば、ＲＯＭ(Read Only Memory)、フラッシュメモリ等である。データ等が、例えば、揮発性メモリに記憶される。プログラム、テーブル、マップ等が、例えば、不揮発性メモリに記憶される。記憶装置３２は、選択肢記憶部４６及びデータ記憶部４８を有する。記憶装置３２の少なくとも一部が、上述したプロセッサ、集積回路等に備えられていてもよい。記憶装置３２の少なくとも一部が、制御装置１４と通信ネットワーク１８によって接続された機器に搭載されていてもよい。 The storage device 32 is composed of a volatile memory (not shown) and a non-volatile memory (not shown), which are computer-readable storage media. The volatile memory is, for example, a RAM (Random Access Memory), etc. The non-volatile memory is, for example, a ROM (Read Only Memory), a flash memory, etc. Data, etc. are stored, for example, in the volatile memory. Programs, tables, maps, etc. are stored, for example, in the non-volatile memory. The storage device 32 has an option storage unit 46 and a data storage unit 48. At least a part of the storage device 32 may be provided in the above-mentioned processor, integrated circuit, etc. At least a part of the storage device 32 may be mounted on a device connected to the control device 14 by the communication network 18.
　算出条件取得部３６は、入力装置１２の入力受付部２８が受け付けた算出条件を取得する。算出条件取得部３６において取得された算出条件は、記憶装置３２のデータ記憶部４８に記憶される。 The calculation condition acquisition unit 36 acquires the calculation conditions accepted by the input acceptance unit 28 of the input device 12. The calculation conditions acquired by the calculation condition acquisition unit 36 are stored in the data storage unit 48 of the storage device 32.
　物理量取得部３８は、射出成形機１６及び外部センサ５０から射出成形機１６の状態を示す物理量を取得する。射出成形機１６の状態を示す物理量とは、例えば、スクリュ位置、スクリュ速度、シリンダ温度等である。物理量は、射出成形機１６に設置されたセンサにより検出される。射出成形機１６に設置されたセンサとは、例えば、スクリュ位置及びスクリュ速度を検出するセンサ、スクリュ回転トルクを検出するセンサ等である。また、物理量は、外部センサ５０により検出される。外部センサ５０は、金型が有するセンサ、射出成形機１６が出荷された後に成形機本体に取り付けられたセンサ等である。外部センサ５０は、樹脂流量を検出するセンサ、樹脂圧力を検出するセンサ等である。物理量取得部３８において取得された物理量は、記憶装置３２に設けられたデータ記憶部４８に記憶される。 The physical quantity acquisition unit 38 acquires physical quantities indicating the state of the injection molding machine 16 from the injection molding machine 16 and the external sensor 50. Examples of physical quantities indicating the state of the injection molding machine 16 include the screw position, screw speed, and cylinder temperature. The physical quantities are detected by sensors installed in the injection molding machine 16. Examples of sensors installed in the injection molding machine 16 include sensors that detect the screw position and screw speed, and sensors that detect the screw rotation torque. The physical quantities are also detected by external sensors 50. The external sensors 50 include sensors that are included in the mold, and sensors that are attached to the molding machine body after the injection molding machine 16 is shipped. The external sensors 50 include sensors that detect the resin flow rate, and sensors that detect the resin pressure. The physical quantities acquired by the physical quantity acquisition unit 38 are stored in a data storage unit 48 provided in the storage device 32.
　インタロック信号算出部４０は、物理量取得部３８が取得した物理量が、データ記憶部４８に記憶された算出条件を満たす場合、インタロック信号をＯＮにする。インタロック信号算出部４０は、物理量取得部３８が取得した物理量が、データ記憶部４８に記憶された算出条件を満たさない場合、インタロック信号をＯＦＦにする。 The interlock signal calculation unit 40 turns the interlock signal ON when the physical quantity acquired by the physical quantity acquisition unit 38 satisfies the calculation conditions stored in the data storage unit 48. The interlock signal calculation unit 40 turns the interlock signal OFF when the physical quantity acquired by the physical quantity acquisition unit 38 does not satisfy the calculation conditions stored in the data storage unit 48.
　制御部４２は、インタロック信号に対応付けられた制御指令を射出成形機１６に出力する。制御指令は、制御指令に対応付けられたＩ／Ｏユニット３４のアドレスにおける出力信号をＯＮとすることで、射出成形機１６に出力される。なお、制御指令は、射出成形機１６の成形機本体にのみに出力されるのではなく、制御指令は、成形機本体に設けられたロボット等にも出力される。これにより、ロボット等においてもインタロック制御が行われる。 The control unit 42 outputs a control command associated with the interlock signal to the injection molding machine 16. The control command is output to the injection molding machine 16 by turning ON an output signal at an address of the I/O unit 34 associated with the control command. Note that the control command is not only output to the molding machine body of the injection molding machine 16, but is also output to a robot or the like provided on the molding machine body. This allows interlock control to be performed on the robot or the like as well.
　監視部４４は、制御部４２から出力された制御指令に対応する物理量を監視する。例えば、制御指令として「型閉じ動作禁止」が出力されている場合、監視部４４は、可動プラテンの速度を監視する。監視部４４は、制御部４２から制御指令が出力されてから所定の監視時間が経過した時点において、制御指令に対応する物理量が制御指令に基づいた値でない場合、射出成形機１６の運転を強制終了させる。例えば、制御指令として「型閉じ動作禁止」が出力された場合、所定の監視時間を経過した時点において、可動プラテンが型閉じ方向に速度を有する場合、監視部４４は、射出成形機１６において制御指令に基づくインタロック制御が行われていないと判定する。この場合、監視部４４は、射出成形機１６の運転を強制終了させる。これにより、射出成形機１６の運転は停止する。 The monitoring unit 44 monitors the physical quantity corresponding to the control command output from the control unit 42. For example, when "prohibit mold closing operation" is output as a control command, the monitoring unit 44 monitors the speed of the movable platen. When a physical quantity corresponding to the control command is not a value based on the control command at a time point when a predetermined monitoring time has elapsed since the control unit 42 output the control command, the monitoring unit 44 forcibly terminates the operation of the injection molding machine 16. For example, when "prohibit mold closing operation" is output as a control command, if the movable platen has a speed in the mold closing direction at a time point when a predetermined monitoring time has elapsed, the monitoring unit 44 determines that interlock control based on the control command is not being performed in the injection molding machine 16. In this case, the monitoring unit 44 forcibly terminates the operation of the injection molding machine 16. This stops the operation of the injection molding machine 16.
　監視部４４が射出成形機１６の運転を強制終了させることに代えて、又は、運転を強制終了させることに加えて、監視部４４は、射出成形機１６の表示機器に制御指令に基づくインタロック制御が行われていない旨を示すアラームメッセージを表示させてもよい。監視部４４が射出成形機１６の運転を強制終了させることに代えて、監視部４４は、射出成形機１６に、実行中の成形工程を中断させ、次の成形工程に進ませてもよい。また、監視部４４が射出成形機１６の運転を強制終了させることに代えて、監視部４４は、制御部４２による射出成形機１６への制御指令の出力を中止させ、射出成形機１６における制御指令に基づくインタロック制御を中止させてもよい。監視時間は、ユーザにより設定される。監視時間の設定については、後に詳述する。 Instead of or in addition to the monitoring unit 44 forcibly terminating the operation of the injection molding machine 16, the monitoring unit 44 may display an alarm message on the display device of the injection molding machine 16 indicating that interlock control based on the control command is not being performed. Instead of the monitoring unit 44 forcibly terminating the operation of the injection molding machine 16, the monitoring unit 44 may cause the injection molding machine 16 to interrupt the molding process being performed and proceed to the next molding process. Also, instead of the monitoring unit 44 forcibly terminating the operation of the injection molding machine 16, the monitoring unit 44 may stop the control unit 42 from outputting the control command to the injection molding machine 16, and cause the injection molding machine 16 to stop the interlock control based on the control command. The monitoring time is set by the user. Setting the monitoring time will be described in detail later.
　図５は、インタロック信号に係る選択肢の例を示す図である。選択肢は、射出成形機１６の機種毎に異なる。また、同一機種の射出成形機１６であっても、選択肢は、接続される外部センサ５０の種類によって異なる場合がある。 FIG. 5 shows examples of options related to interlock signals. The options differ depending on the model of the injection molding machine 16. Even for the same model of injection molding machine 16, the options may differ depending on the type of external sensor 50 connected.
　選択肢として、成形工程に関する選択肢、モニタ値に関する選択肢及び制御指令に関する選択肢がある。選択された成形工程に関する選択肢に応じて、選択可能なモニタ値に関する選択肢及び制御指令に関する選択肢が限定される。図５に示すように、成形工程に関する選択肢に対して、モニタ値に関する選択肢及び制御指令に関する選択肢とが対応付けられたテーブルにより管理される。このテーブルは、射出成形機のメーカにより用意される。 The options include options related to the molding process, options related to monitor values, and options related to control commands. The options related to monitor values and options related to control commands that can be selected are limited depending on the option related to the molding process selected. As shown in Figure 5, options related to the molding process are managed by a table that associates options related to monitor values and options related to control commands. This table is prepared by the manufacturer of the injection molding machine.
　図５に示す例では、成形工程に関する選択肢として、「射出工程」、「計量工程」、「型閉じ工程」、「突き出し工程」、「全ての工程」等が設定される。 In the example shown in Figure 5, the options for the molding process are set to "injection process," "weighing process," "mold closing process," "ejection process," "all processes," etc.
　図５に示す例では、「射出工程」に対応付けられたモニタ値に関する選択肢として、「スクリュ位置」、「スクリュ速度」、「ノズル温度」、「シリンダ温度」、「外部センサ１」、「外部センサ２」等が設定される。 In the example shown in Figure 5, the options for the monitor values associated with the "injection process" are set as "screw position," "screw speed," "nozzle temperature," "cylinder temperature," "external sensor 1," "external sensor 2," etc.
　図５に示す例では、「射出工程」に対応付けられた制御指令に関する選択肢として、「射出動作を許可」、「射出工程を中断し、保圧工程に進む」、「型閉じ動作を禁止」、「型緩め動作を許可」、「型緩め動作を禁止」、「型緩め運転条件の変更を禁止」等が設定される。 In the example shown in Figure 5, the options for the control command associated with the "injection process" are "permit injection operation," "interrupt injection process and proceed to pressure holding process," "prohibit mold closing operation," "permit mold loosening operation," "prohibit mold loosening operation," "prohibit changes to mold loosening operation conditions," etc.
　算出条件の要素として、成形工程に関する複数の選択肢の中から１つの選択肢が選択されれば、モニタ値に関する選択肢、及び、制御指令に関する選択肢が絞られる。これにより、オペレータは、算出条件を容易に設定できる。 When one option is selected from multiple options related to the molding process as an element of the calculation conditions, the options related to the monitor values and the options related to the control commands are narrowed down. This allows the operator to easily set the calculation conditions.
　図６は、インタロック信号に係る選択肢の例を示す図である。図６に示す選択肢は、モニタ値と閾値との大小関係の比較方法に関する選択肢がある。比較方法に関する選択肢は、成形工程に関する選択肢とは対応付けられず、図５に示すテーブルとは別のテーブルにより管理される。このテーブルは、射出成形機のメーカにより用意される。 FIG. 6 shows examples of options related to interlock signals. The options shown in FIG. 6 include options related to the comparison method for determining whether the monitor value is larger or smaller than the threshold value. Options related to the comparison method are not associated with options related to the molding process, and are managed in a table separate from the table shown in FIG. 5. This table is prepared by the manufacturer of the injection molding machine.
　図７は、算出条件設定画面５２を示す図である。算出条件設定画面５２は、入力装置１２の表示機器に表示される。算出条件設定画面５２は、制御システム１０の外部の表示機器に表示されてもよい。 FIG. 7 is a diagram showing the calculation condition setting screen 52. The calculation condition setting screen 52 is displayed on a display device of the input device 12. The calculation condition setting screen 52 may be displayed on a display device external to the control system 10.
　算出条件設定画面５２には、名称入力部５４、成形工程入力部５６、モニタ値入力部５８、比較方法入力部６０、閾値入力部６２及び遅延時間入力部６４が表示される。 The calculation condition setting screen 52 displays a name input section 54, a molding process input section 56, a monitor value input section 58, a comparison method input section 60, a threshold input section 62, and a delay time input section 64.
　名称入力部５４において、オペレータは、インタロック信号の各々に対応する任意の名称を入力できる。算出条件が成立したインタロック信号の名称が入力された名称入力部５４は、枠線の太さを太く変化させてもよい。 In the name input section 54, the operator can input any name corresponding to each interlock signal. When the name of an interlock signal for which the calculation condition is met is input, the name input section 54 may change the thickness of the frame line to a thicker one.
　成形工程入力部５６において、オペレータは、算出条件の成形工程に関する要素を入力できる。オペレータが、成形工程入力部５６をタッチした場合、成形工程に関する選択肢がポップアップ表示される。射出成形機１６において実行中の成形工程が入力された成形工程入力部５６は、枠線の太さを太く変化させてもよい。 In the molding process input section 56, the operator can input elements related to the molding process of the calculation conditions. When the operator touches the molding process input section 56, a pop-up display of options related to the molding process is displayed. When the molding process being executed in the injection molding machine 16 is input in the molding process input section 56, the thickness of the frame line may be changed to a thicker one.
　モニタ値入力部５８において、オペレータは、算出条件のモニタ値に関する要素を入力できる。オペレータが、モニタ値入力部５８をタッチした場合、モニタ値に関する選択肢がポップアップ表示される。 In the monitor value input section 58, the operator can input elements related to the monitor value of the calculation conditions. When the operator touches the monitor value input section 58, a pop-up display of options related to the monitor value is displayed.
　比較方法入力部６０において、オペレータは、算出条件の比較方法に関する要素を入力できる。オペレータが、比較方法入力部６０をタッチした場合、図６に示すモニタ値に係る比較方法に関する選択肢がポップアップ表示される。射出成形機１６における物理量が、モニタ値と閾値との比較条件を満たす比較方法が入力された比較方法入力部６０は、枠線の太さを太く変化させてもよい。 In the comparison method input section 60, the operator can input elements related to the comparison method of the calculation conditions. When the operator touches the comparison method input section 60, a pop-up appears with options for the comparison method related to the monitor value shown in FIG. 6. When a comparison method in which the physical quantity in the injection molding machine 16 satisfies the comparison condition between the monitor value and the threshold value is input, the comparison method input section 60 may change the thickness of the border to a thicker one.
　なお、名称入力部５４、成形工程入力部５６及び比較方法入力部６０において、枠線の太さを太く変化させることに代えて、又は、枠線の太さを太く変化させることに加えて、枠線、又は、枠内の文字の色を変化させてもよい。 In addition, in the name input section 54, the molding process input section 56, and the comparison method input section 60, instead of or in addition to thickening the border line, the color of the border line or the text within the border may be changed.
　閾値入力部６２において、オペレータは、閾値を入力できる。遅延時間入力部６４において、オペレータは、遅延時間を入力できる。 In the threshold input section 62, the operator can input a threshold value. In the delay time input section 64, the operator can input a delay time.
　算出条件設定画面５２には、さらに、現在値表示部６６及びステータス表示部６８が表示される。 The calculation condition setting screen 52 further displays a current value display section 66 and a status display section 68.
　現在値表示部６６は、モニタ値入力部５８に入力された物理量に関する現在の値が表示される。ステータス表示部６８は、ＯＮ／ＯＦＦ表示部７０及び関係表示部７２を有する。インタロック信号がＯＮである場合には、ＯＮ／ＯＦＦ表示部７０に、中身が塗りつぶされた四角形状の表示が表示される。インタロック信号がＯＦＦである場合には、ＯＮ／ＯＦＦ表示部７０に、中身が白抜きされた四角形状の表示が表示される。関係表示部７２は、比較方法入力部６０に入力された比較方法と、閾値入力部６２に入力された閾値との関係を示す図が表示される。関係表示部７２には、モニタ値入力部５８に入力された物理量の現在値を示す三角形状の表示が表示される。 The current value display section 66 displays the current value of the physical quantity input to the monitor value input section 58. The status display section 68 has an ON/OFF display section 70 and a relationship display section 72. When the interlock signal is ON, the ON/OFF display section 70 displays a solid rectangular display. When the interlock signal is OFF, the ON/OFF display section 70 displays a hollow rectangular display. The relationship display section 72 displays a diagram showing the relationship between the comparison method input to the comparison method input section 60 and the threshold value input to the threshold input section 62. The relationship display section 72 displays a triangular display showing the current value of the physical quantity input to the monitor value input section 58.
　図８は、算出条件設定画面５２を示す図である。図８の算出条件設定画面５２は、図７の算出条件設定画面５２の別の例を示す。 FIG. 8 is a diagram showing the calculation condition setting screen 52. The calculation condition setting screen 52 in FIG. 8 shows another example of the calculation condition setting screen 52 in FIG. 7.
　図８に示す算出条件設定画面５２は、論理演算子入力部７４を有する。論理演算子入力部７４において、オペレータは、論理演算子を入力できる。 The calculation condition setting screen 52 shown in FIG. 8 has a logical operator input section 74. In the logical operator input section 74, the operator can input a logical operator.
　オペレータが、論理演算子入力部７４をタッチした場合、論理演算子に関する選択肢がポップアップ表示される。論理演算子に関する選択肢は、例えば、「論理積（ＡＮＤ）」、「論理和（ＯＲ）」、「否定論理積（ＮＡＮＤ）」、「否定論理和（ＮＯＲ）」、「排他的論理和（ＸＯＲ）」等である。 When the operator touches the logical operator input section 74, options related to logical operators are displayed in a pop-up. The options related to logical operators include, for example, "logical product (AND)," "logical sum (OR)," "negated logical product (NAND)," "negated logical sum (NOR)," "exclusive logical sum (XOR)," etc.
　これにより、モニタ値と閾値とを比較する複数の条件が１つの算出条件として設定される。例えば、図８に示す「Ｓｉｇ．１１」は、２つの比較条件が論理和（ＯＲ）によって１つの算出条件として設定される。モニタ値として選択されたスクリュ位置が、閾値として設定された２０．０より小さい場合に、インタロック信号算出部４０はインタロック信号をＯＮとする。または、モニタ値として選択されたスクリュ位置が、閾値として設定された３０．０以上の場合に、インタロック信号算出部４０はインタロック信号をＯＮとする。また、モニタ値として選択される物理量は、例えば、図８のインタロック信号「Ｓｉｇ．１２」における「スクリュ位置」と「型締力」のように異なる物理量が選択されてもよい。 As a result, multiple conditions for comparing the monitor value with the threshold value are set as one calculation condition. For example, "Sig.11" shown in FIG. 8 is set as one calculation condition by logical sum (OR) of two comparison conditions. If the screw position selected as the monitor value is smaller than 20.0 set as the threshold value, the interlock signal calculation unit 40 turns the interlock signal ON. Alternatively, if the screw position selected as the monitor value is equal to or greater than 30.0 set as the threshold value, the interlock signal calculation unit 40 turns the interlock signal ON. In addition, the physical quantity selected as the monitor value may be different, such as the "screw position" and "clamping force" in the interlock signal "Sig.12" in FIG. 8.
　図９は、制御指令設定画面７６を示す図である。制御指令設定画面７６は、入力装置１２の表示機器に表示される。 FIG. 9 shows the control command setting screen 76. The control command setting screen 76 is displayed on the display device of the input device 12.
　制御指令設定画面７６は、信号ＩＤ入力部７８、出力信号入力部８０、制御指令入力部８２及び監視時間入力部８４を有する。 The control command setting screen 76 has a signal ID input section 78, an output signal input section 80, a control command input section 82, and a monitoring time input section 84.
　信号ＩＤ入力部７８において、オペレータは、制御指令を設定するインタロック信号の信号ＩＤを入力できる。オペレータが、信号ＩＤ入力部７８をタッチした場合、信号ＩＤに関する選択肢がポップアップ表示される。 In the signal ID input section 78, the operator can input the signal ID of the interlock signal for which a control command is to be set. When the operator touches the signal ID input section 78, a pop-up display of options for the signal ID is displayed.
　出力信号入力部８０において、オペレータは、インタロック信号がＯＮである場合に出力信号をＯＮとするＩ／Ｏユニット３４のアドレスを入力できる。オペレータが、出力信号入力部８０をタッチした場合、アドレスに関する選択肢がポップアップ表示される。出力信号がＯＮであるアドレスが入力された出力信号入力部８０は、枠線の太さを太く変化させてもよい。なお、出力信号入力部８０において、枠線の太さを太く変化させることに代えて、又は、枠線の太さを太く変化させることに加えて、枠線、又は、枠内の文字の色を変化させてもよい。 In the output signal input section 80, the operator can input the address of the I/O unit 34 that will turn the output signal ON when the interlock signal is ON. When the operator touches the output signal input section 80, a pop-up display of address options is displayed. The output signal input section 80 to which an address that turns the output signal ON has been input may change the thickness of the border to a thicker one. Note that instead of or in addition to changing the thickness of the border to a thicker one, the output signal input section 80 may change the color of the border or the text within the border.
　制御指令入力部８２において、オペレータは、制御指令を入力できる。オペレータが、制御指令入力部８２をタッチした場合、制御指令に関する選択肢がポップアップ表示される。監視時間入力部８４において、オペレータは、監視時間を入力できる。監視時間は、制御指令入力部８２にて選択された制御指令に基づくインタロック制御が射出成形機１６において行われたか否かを監視する時間である。監視部４４は、射出成形機１６において制御指令に基づくインタロック制御が行われていないと判定された場合、例えば射出成形機１６の運転を強制終了させることができる。これにより、射出成形機１６の運転は停止する。 In the control command input section 82, the operator can input a control command. When the operator touches the control command input section 82, options related to the control command are displayed as a pop-up. In the monitoring time input section 84, the operator can input a monitoring time. The monitoring time is the time during which it is monitored whether or not interlock control based on the control command selected in the control command input section 82 has been performed in the injection molding machine 16. If it is determined that interlock control based on a control command has not been performed in the injection molding machine 16, the monitoring section 44 can, for example, force the operation of the injection molding machine 16 to terminate. This causes the operation of the injection molding machine 16 to stop.
　ここで、射出成形機１６において、制御指令に基づいたインタロック制御が行われない状態について説明する。 Here, we will explain the state in which interlock control based on a control command is not performed in the injection molding machine 16.
　例えば、図９に示すインタロック信号「Ｓｉｇ．２」に割り当てられたＩ／Ｏユニット３４のアドレス「Ｙ１．２」には、「Ｓｉｇ．２」が属する射出工程において制御指令として「射出工程を中断し、保圧工程に進む」が設定される。また、図９に示すインタロック信号「Ｓｉｇ．５」に割り当てられたＩ／Ｏユニット３４のアドレス「Ｙ１．５」には、「Ｓｉｇ．５」が属する射出工程において制御指令として「射出工程を中断し、保圧工程に進む」が設定される。 For example, in the address "Y1.2" of the I/O unit 34 assigned to the interlock signal "Sig.2" shown in FIG. 9, the control command "interrupt the injection process and proceed to the pressure holding process" is set in the injection process to which "Sig.2" belongs. Also, in the address "Y1.5" of the I/O unit 34 assigned to the interlock signal "Sig.5" shown in FIG. 9, the control command "interrupt the injection process and proceed to the pressure holding process" is set in the injection process to which "Sig.5" belongs.
　図９に示す例では、アドレス「Ｙ１．２」の出力信号と、アドレス「Ｙ１．５」の出力信号とがともにＯＮである場合に、制御指令に基づいて、射出成形機１６に対して「射出工程を中断し、保圧工程に進む」のインタロック制御が行われる。すなわち、アドレス「Ｙ１．２」の出力信号がＯＮであっても、「Ｓｉｇ．５」の算出条件であるモニタ値（シリンダ温度）が閾値２００．０［度］に一致して、アドレス「Ｙ１．５」の出力信号がＯＮに切り換わるまでは、射出成形機１６において「射出工程を中断し、保圧工程に進む」のインタロック制御は行われない。このように、射出成形機１６において制御指令に基づいたインタロック制御が行われない場合がある。 In the example shown in FIG. 9, when the output signal of address "Y1.2" and the output signal of address "Y1.5" are both ON, interlock control of "interrupting the injection process and proceeding to the pressure holding process" is performed on the injection molding machine 16 based on the control command. In other words, even if the output signal of address "Y1.2" is ON, the interlock control of "interrupting the injection process and proceeding to the pressure holding process" is not performed in the injection molding machine 16 until the monitor value (cylinder temperature), which is the calculation condition of "Sig.5", matches the threshold value 200.0 [degrees] and the output signal of address "Y1.5" switches to ON. In this way, there are cases where interlock control based on a control command is not performed in the injection molding machine 16.
　オペレータにより監視時間が設定されることにより、監視部４４は、オペレータが所望する時点においてインタロック制御が行われたか否かを監視する。 The monitoring time is set by the operator, and the monitoring unit 44 monitors whether interlock control has been performed at the time desired by the operator.
　制御指令設定画面７６において、全てのインタロック信号について、対応する制御指令が設定されなくてもよい。オペレータは、所望するインタロック信号を抜粋して、抜粋したインタロック信号に対して制御指令を設定してもよい。これにより、オペレータはインタロック信号に基づく制御指令の実行可否を容易に選択できる。 In the control command setting screen 76, it is not necessary to set corresponding control commands for all interlock signals. The operator may select desired interlock signals and set control commands for the selected interlock signals. This allows the operator to easily select whether or not to execute a control command based on an interlock signal.
　［各装置における処理］
　図１０は、入力装置１２において実行される処理を示すフローチャートである。この処理は、所定周期で繰り返し実行される。 [Processing in each device]
10 is a flowchart showing the process executed by the input device 12. This process is repeatedly executed at a predetermined cycle.
　ステップＳ１において、選択肢取得部２６は、制御装置１４の記憶装置３２に設けられる選択肢記憶部４６からインタロック信号に係る選択肢を取得する。その後、ステップＳ２へ移行する。 In step S1, the option acquisition unit 26 acquires options related to the interlock signal from the option storage unit 46 provided in the storage device 32 of the control device 14. Then, the process proceeds to step S2.
　ステップＳ２において、入力受付部２８は、オペレータによる選択肢の選択によって生成される算出条件の入力を受け付ける。その後、処理を終了する。 In step S2, the input reception unit 28 receives input of the calculation conditions that are generated by the operator selecting an option. Then, the process ends.
　図１１は、制御装置１４において実行される処理を示すフローチャートである。この処理は、所定周期で繰り返し実行される。 FIG. 11 is a flowchart showing the process executed by the control device 14. This process is executed repeatedly at a predetermined interval.
　ステップＳ１１において、算出条件取得部３６は、入力装置１２の入力受付部２８が受け付けた算出条件を取得する。その後、ステップＳ１２へ移行する。 In step S11, the calculation condition acquisition unit 36 acquires the calculation conditions accepted by the input acceptance unit 28 of the input device 12. Then, the process proceeds to step S12.
　ステップＳ１２において、物理量取得部３８は、射出成形機１６及び外部センサ５０から射出成形機１６の状態を示す物理量を取得する。その後、ステップＳ１３へ移行する。 In step S12, the physical quantity acquisition unit 38 acquires physical quantities indicating the state of the injection molding machine 16 from the injection molding machine 16 and the external sensor 50. Then, the process proceeds to step S13.
　ステップＳ１３において、インタロック信号算出部４０は、物理量取得部３８が取得した物理量が、データ記憶部４８に記憶された算出条件を満たすか否かを判定する。物理量が算出条件を満たす場合、ステップＳ１４へ移行する。物理量が算出条件を満たさない場合、ステップＳ１５へ移行する。 In step S13, the interlock signal calculation unit 40 determines whether the physical quantity acquired by the physical quantity acquisition unit 38 satisfies the calculation condition stored in the data storage unit 48. If the physical quantity satisfies the calculation condition, the process proceeds to step S14. If the physical quantity does not satisfy the calculation condition, the process proceeds to step S15.
　ステップＳ１４において、インタロック信号算出部４０は、インタロック信号をＯＮにする。その後、ステップＳ１６へ移行する。 In step S14, the interlock signal calculation unit 40 turns the interlock signal ON. Then, the process proceeds to step S16.
　ステップＳ１５において、インタロック信号算出部４０は、インタロック信号をＯＦＦにする。その後、ステップＳ１６へ移行する。 In step S15, the interlock signal calculation unit 40 turns off the interlock signal. Then, the process proceeds to step S16.
　ステップＳ１６において、制御部４２は、インタロック信号に対応付けられた制御指令を射出成形機１６に出力する。 In step S16, the control unit 42 outputs a control command associated with the interlock signal to the injection molding machine 16.
　ステップＳ１７において、監視部４４は、射出成形機１６において制御指令に基づくインタロック制御が行われたか否かを判定する。射出成形機１６において制御指令に基づくインタロック制御が行われた場合には、処理を終了する。射出成形機１６において制御指令に基づくインタロック制御が行われない場合には、ステップＳ１８へ移行する。 In step S17, the monitoring unit 44 determines whether or not interlock control based on a control command has been performed in the injection molding machine 16. If interlock control based on a control command has been performed in the injection molding machine 16, the process ends. If interlock control based on a control command has not been performed in the injection molding machine 16, the process proceeds to step S18.
　ステップＳ１８において、監視部４４は、射出成形機１６の運転を強制終了させる。これにより、射出成形機１６の運転は停止する。その後、処理を終了する。 In step S18, the monitoring unit 44 forcibly terminates the operation of the injection molding machine 16. This stops the operation of the injection molding machine 16. Then, the process ends.
　図１０のフローチャートに示す入力装置１２において実行される処理、及び、図１１のフローチャートに示す制御装置１４において実行される処理において、処理の順序の変更、処理の追加、処理の削除等が行われてもよい。 The order of the processes executed by the input device 12 shown in the flowchart of FIG. 10 and the processes executed by the control device 14 shown in the flowchart of FIG. 11 may be changed, processes may be added, processes may be deleted, etc.
　［作用効果］
　本実施形態の制御システム１０では、監視部４４は、射出成形機１６の状態を示す物理量に基づき、射出成形機１６において制御指令に基づくインタロック制御が行われたか否かを判定する。射出成形機１６において制御指令に基づくインタロック制御が行われていない場合、監視部４４は、射出成形機１６の運転を強制終了させる。これにより、射出成形機１６の運転は停止する。または、射出成形機１６において制御指令に基づくインタロック制御が行われていない場合、監視部４４は、制御部４２による射出成形機１６への制御指令の出力を中止させ、射出成形機１６における制御指令に基づくインタロック制御を中止させてもよい。または、射出成形機１６において制御指令に基づくインタロック制御が行われていない場合、監視部４４は、射出成形機１６に、実行中の成形工程を中断させ、次の成形工程に進ませてもよい。 [Action and Effect]
In the control system 10 of this embodiment, the monitoring unit 44 judges whether or not the interlock control based on the control command has been performed in the injection molding machine 16 based on the physical quantity indicating the state of the injection molding machine 16. If the interlock control based on the control command is not being performed in the injection molding machine 16, the monitoring unit 44 forcibly terminates the operation of the injection molding machine 16. This stops the operation of the injection molding machine 16. Alternatively, if the interlock control based on the control command is not being performed in the injection molding machine 16, the monitoring unit 44 may stop the output of the control command to the injection molding machine 16 by the control unit 42, and may stop the interlock control based on the control command in the injection molding machine 16. Alternatively, if the interlock control based on the control command is not being performed in the injection molding machine 16, the monitoring unit 44 may cause the injection molding machine 16 to interrupt the molding process being performed and proceed to the next molding process.
　これにより、制御システム１０は、射出成形機１６においてインタロック制御が行われていない場合であっても、射出成形機１６の破損、成形時間の長期化を防止できる。 As a result, the control system 10 can prevent damage to the injection molding machine 16 and prolonged molding times even when interlock control is not being performed on the injection molding machine 16.
　本実施形態の制御システム１０は、入力装置１２、及び、射出成形機１６の各々に対応付けられた制御装置１４を有する。入力装置１２の選択肢取得部２６は、制御装置１４の各々からインタロック信号に係る選択肢を取得する。入力装置１２の入力受付部２８は、オペレータによる選択肢の選択により生成される算出条件の入力を受け付ける。 The control system 10 of this embodiment has an input device 12 and a control device 14 associated with each of the injection molding machines 16. The option acquisition unit 26 of the input device 12 acquires options related to interlock signals from each of the control devices 14. The input acceptance unit 28 of the input device 12 accepts the input of calculation conditions that are generated by the operator selecting an option.
　これにより、オペレータは、射出成形機１６に対応して設定された選択肢を選択することにより算出条件を設定できる。そのため、オペレータは容易に算出条件を設定できる。また、オペレータは、算出条件を誤設定する可能性を低減できる。 As a result, the operator can set the calculation conditions by selecting an option that is set corresponding to the injection molding machine 16. Therefore, the operator can easily set the calculation conditions. In addition, the operator can reduce the possibility of setting the calculation conditions incorrectly.
　また、本実施形態の制御システム１０は、比較条件におけるモニタ値と閾値との比較方法を選択肢により、オペレータに提示する。これにより、射出成形機１６にインタロック制御を行わせる期間を規定する条件を、オペレータが細かく設定することができる。これにより、インタロック制御により所定の動作が禁止される期間をできるだけ短く設定できる。そのため、射出成形機１６において成形品を製造するサイクルタイムを短縮でき、安全に成形サイクルを繰り返し行うことができる。 In addition, the control system 10 of this embodiment presents the operator with a selection of methods for comparing the monitor value with the threshold value under the comparison conditions. This allows the operator to set in detail the conditions that stipulate the period during which the injection molding machine 16 is to perform interlock control. This allows the period during which a specified operation is prohibited by interlock control to be set as short as possible. This allows the cycle time for manufacturing molded products in the injection molding machine 16 to be shortened, and the molding cycle can be safely repeated.
　また、本実施形態の制御システム１０は、射出成形機１６の出荷後に射出成形機１６に取り付けられた外部センサ５０により検出された物理量をモニタ値として算出条件に設定できる。例えば、外部センサ５０として、金型に温度センサが取り付けられた場合、温度センサにより検出された温度が所定温度まで上昇した時点において、射出成形機１６の運転を許可する制御指令を出力するインタロック信号を算出できる。これにより、制御システム１０は、射出成形機１６が製造する成形品の歩留まりを改善できる。また、制御システム１０は、金型が低温である状態で射出成形機１６を運転させることによる金型の破損等を回避できる。 In addition, the control system 10 of this embodiment can set the physical quantity detected by the external sensor 50 attached to the injection molding machine 16 after the shipment of the injection molding machine 16 as a monitor value in the calculation conditions. For example, if a temperature sensor is attached to the mold as the external sensor 50, an interlock signal can be calculated that outputs a control command to permit operation of the injection molding machine 16 when the temperature detected by the temperature sensor rises to a predetermined temperature. This allows the control system 10 to improve the yield of molded products manufactured by the injection molding machine 16. In addition, the control system 10 can avoid damage to the mold, etc., caused by operating the injection molding machine 16 when the mold is at a low temperature.
　また、実施形態の制御システム１０では、入力装置１２の表示機器は、算出条件設定画面５２を表示する。算出条件設定画面５２には、算出条件を設定する表示とともに、モニタ値として選択された物理量の現在値等が表示される。これにより、オペレータは、射出成形機１６の状態を物理量の現在値等で確認しながら、算出条件を設定できる。 In addition, in the control system 10 of the embodiment, the display device of the input device 12 displays a calculation condition setting screen 52. The calculation condition setting screen 52 displays the current values of the physical quantities selected as monitor values, along with a display for setting the calculation conditions. This allows the operator to set the calculation conditions while checking the state of the injection molding machine 16 using the current values of the physical quantities, etc.
　従来、オペレータは、同じ算出条件が設定される複数の制御装置１４に対して、制御装置１４の各々に対して算出条件を設定していた。これに対し、本実施形態の制御システム１０は、入力装置１２は、通信ネットワーク１８を介して、同じ算出条件が設定される複数の制御装置１４の各々に対して、同じ算出条件を送信できる。これにより、制御システム１０は、制御装置１４の各々に算出条件を設定するオペレータの作業工数を削減できる。 Conventionally, an operator would set calculation conditions for each of a plurality of control devices 14 for which the same calculation conditions are set. In contrast, in the control system 10 of this embodiment, the input device 12 can transmit the same calculation conditions via the communication network 18 to each of a plurality of control devices 14 for which the same calculation conditions are set. This allows the control system 10 to reduce the amount of work required by the operator to set calculation conditions for each of the control devices 14.
　〔第２の実施形態〕
　［制御システムの概要］
　図１２は、本実施形態の制御システム１０の模式図である。制御システム１０は、１台の入力装置１２、１台の管理装置９０、及び、複数台の制御装置１４を有する。以下、第１の実施形態と同じ構成については、同一の符号を付して説明を省略する。 Second Embodiment
[Control system overview]
12 is a schematic diagram of a control system 10 of this embodiment. The control system 10 has one input device 12, one management device 90, and multiple control devices 14. Hereinafter, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted.
　管理装置９０は、パーソナルコンピュータ等である。管理装置９０は、液晶ディスプレイ、有機ＥＬ(Electro Luminescence)ディスプレイ等の表示機器を有してもよい。また、管理装置９０は、キーボード、マウス等の入力機器を有してもよい。 The management device 90 is a personal computer or the like. The management device 90 may have a display device such as a liquid crystal display or an organic EL (Electro Luminescence) display. The management device 90 may also have input devices such as a keyboard and a mouse.
　入力装置１２、管理装置９０及び制御装置１４は、通信ネットワーク１８に接続される。入力装置１２、管理装置９０及び制御装置１４は、通信ネットワーク１８を介して通信可能に設けられる。 The input device 12, the management device 90, and the control device 14 are connected to the communication network 18. The input device 12, the management device 90, and the control device 14 are arranged to be able to communicate with each other via the communication network 18.
　制御システム１０は、１台の入力装置１２、１台の管理装置９０、及び、１台の制御装置１４を有してもよい。また、制御システム１０は、複数台の入力装置１２、複数台の管理装置９０、及び、複数台の制御装置１４を有してもよい。入力装置１２及び管理装置９０は、１台の制御装置１４に対する専用の装置として用いられるものではなく、複数台の制御装置１４に対して共有の装置として用いられる。 The control system 10 may have one input device 12, one management device 90, and one control device 14. The control system 10 may also have multiple input devices 12, multiple management devices 90, and multiple control devices 14. The input device 12 and the management device 90 are not used as dedicated devices for one control device 14, but are used as shared devices for multiple control devices 14.
　［制御システムの構成］
　図１３及び図１４は、制御システム１０の構成を示すブロック図である。 [Control system configuration]
13 and 14 are block diagrams showing the configuration of the control system 10.
　（入力装置の構成）
　本実施形態の入力装置１２は、第１の実施形態の入力装置１２と同じく、演算処理装置２２及び記憶装置２４を有する。演算処理装置２２は、選択肢取得部９２及び入力受付部９４を有する。 (Configuration of input device)
The input device 12 of this embodiment, like the input device 12 of the first embodiment, includes a processor 22 and a storage device 24. The processor 22 includes an option acquisition unit 92 and an input acceptance unit 94.
　選択肢取得部９２は、管理装置９０の記憶装置９８に設けられる選択肢記憶部１１０からインタロック信号に係る選択肢を取得する。 The option acquisition unit 92 acquires options related to the interlock signal from an option storage unit 110 provided in the storage device 98 of the management device 90.
　入力受付部９４は、オペレータによる選択肢の選択によって生成される算出条件の入力を受け付ける。算出条件は、生成に用いられた選択肢が対応付けられた射出成形機１６に対応する条件として生成される。入力受付部９４は、入力装置１２に接続されたフラッシュメモリに記憶される算出条件の入力を受け付けてもよい。フラッシュメモリには、射出成形機１６の各々に対応する算出条件が記憶される。 The input reception unit 94 receives input of calculation conditions generated by the operator selecting an option. The calculation conditions are generated as conditions corresponding to the injection molding machine 16 associated with the option used for generation. The input reception unit 94 may receive input of calculation conditions stored in a flash memory connected to the input device 12. The flash memory stores calculation conditions corresponding to each of the injection molding machines 16.
　入力受付部９４により入力が受け付けられた算出条件は、管理装置９０に送信される。 The calculation conditions accepted by the input accepting unit 94 are sent to the management device 90.
　（管理装置の構成）
　管理装置９０は、演算処理装置９６及び記憶装置９８を有する。演算処理装置９６は、例えば、ＣＰＵ(Central Processing Unit)、ＧＰＵ(Graphics Processing Unit)等のプロセッサである。演算処理装置９６は、算出条件取得部１００、算出条件送信部１０２、物理量受信部１０４、インタロック信号算出部１０６及び制御指令送信部１０８を有する。算出条件取得部１００、算出条件送信部１０２、物理量受信部１０４、インタロック信号算出部１０６及び制御指令送信部１０８は、記憶装置９８に記憶されているプログラムが演算処理装置９６によって実行されることで実現される。算出条件取得部１００、算出条件送信部１０２、物理量受信部１０４、インタロック信号算出部１０６及び制御指令送信部１０８の少なくとも一部が、ＡＳＩＣ(Application Specific Integrated Circuit)、ＦＰＧＡ(Field-Programmable Gate Array)等の集積回路によって実現されてもよい。算出条件取得部１００、算出条件送信部１０２、物理量受信部１０４、インタロック信号算出部１０６及び制御指令送信部１０８の少なくとも一部が、ディスクリートデバイスを含む電子回路によって実現されてもよい。 (Configuration of management device)
The management device 90 includes a processing device 96 and a storage device 98. The processing device 96 is, for example, a processor such as a central processing unit (CPU) or a graphics processing unit (GPU). The processing device 96 includes a calculation condition acquisition unit 100, a calculation condition transmission unit 102, a physical quantity reception unit 104, an interlock signal calculation unit 106, and a control command transmission unit 108. The calculation condition acquisition unit 100, the calculation condition transmission unit 102, the physical quantity reception unit 104, the interlock signal calculation unit 106, and the control command transmission unit 108 are realized by the processing device 96 executing a program stored in the storage device 98. At least a part of the calculation condition acquisition unit 100, the calculation condition transmission unit 102, the physical quantity reception unit 104, the interlock signal calculation unit 106, and the control command transmission unit 108 may be realized by an integrated circuit such as an application specific integrated circuit (ASIC) or a field-programmable gate array (FPGA). At least a portion of the calculation condition acquisition unit 100, the calculation condition transmission unit 102, the physical quantity reception unit 104, the interlock signal calculation unit 106, and the control command transmission unit 108 may be realized by electronic circuits including discrete devices.
　記憶装置９８は、コンピュータ可読記憶媒体である、不図示の揮発性メモリ及び不図示の不揮発性メモリにより構成される。記憶装置９８は、選択肢記憶部１１０及び算出条件記憶部１１２を有する。揮発性メモリは、例えば、ＲＡＭ(Random Access Memory)等である。不揮発性メモリは、例えば、ＲＯＭ(Read Only Memory)、フラッシュメモリ等である。データ等が、例えば、揮発性メモリに記憶される。プログラム、テーブル、マップ等が、例えば、不揮発性メモリに記憶される。記憶装置９８の少なくとも一部が、上述したプロセッサ、集積回路等に備えられていてもよい。記憶装置９８の少なくとも一部が、管理装置９０と通信ネットワーク１８によって接続された機器に搭載されていてもよい。 The storage device 98 is composed of a volatile memory (not shown) and a non-volatile memory (not shown), which are computer-readable storage media. The storage device 98 has an option storage unit 110 and a calculation condition storage unit 112. The volatile memory is, for example, a RAM (Random Access Memory), etc. The non-volatile memory is, for example, a ROM (Read Only Memory), a flash memory, etc. Data, etc. are stored, for example, in the volatile memory. Programs, tables, maps, etc. are stored, for example, in the non-volatile memory. At least a part of the storage device 98 may be provided in the above-mentioned processor, integrated circuit, etc. At least a part of the storage device 98 may be mounted on a device connected to the management device 90 by the communication network 18.
　算出条件取得部１００は、入力装置１２の入力受付部９４が受け付けた算出条件を取得する。算出条件取得部１００において取得された算出条件は、記憶装置９８の算出条件記憶部１１２に記憶される。 The calculation condition acquisition unit 100 acquires the calculation conditions accepted by the input acceptance unit 94 of the input device 12. The calculation conditions acquired by the calculation condition acquisition unit 100 are stored in the calculation condition storage unit 112 of the storage device 98.
　算出条件送信部１０２は、算出条件記憶部１１２に記憶される算出条件を、制御装置１４に送信する。物理量受信部１０４は、制御装置１４が送信した物理量を受信する。 The calculation condition transmission unit 102 transmits the calculation conditions stored in the calculation condition storage unit 112 to the control device 14. The physical quantity reception unit 104 receives the physical quantities transmitted by the control device 14.
　インタロック信号算出部１０６は、物理量受信部１０４が受信した物理量が、算出条件記憶部１１２に記憶された算出条件を満たす場合、インタロック信号をＯＮにする。 The interlock signal calculation unit 106 turns on the interlock signal when the physical quantity received by the physical quantity receiving unit 104 satisfies the calculation conditions stored in the calculation condition storage unit 112.
　制御指令送信部１０８は、インタロック信号に対応付けられた制御指令を制御装置１４に送信する。 The control command transmission unit 108 transmits a control command associated with the interlock signal to the control device 14.
　（制御装置の構成）
　本実施形態の制御装置１４は、第１の実施形態の制御装置１４と同じく、演算処理装置３０、記憶装置３２及びＩ／Ｏユニット３４を有する。演算処理装置３０は、算出条件受信部１１４、物理量取得部１１６、物理量抽出部１１８、物理量送信部１２０、制御指令受信部１２２、制御部１２４及び監視部１２６を有する。記憶装置３２は、データ記憶部１２８を有する。 (Configuration of the control device)
The control device 14 of this embodiment, like the control device 14 of the first embodiment, has a calculation processing device 30, a storage device 32, and an I/O unit 34. The calculation processing device 30 has a calculation condition receiving unit 114, a physical quantity acquiring unit 116, a physical quantity extracting unit 118, a physical quantity transmitting unit 120, a control command receiving unit 122, a control unit 124, and a monitoring unit 126. The storage device 32 has a data storage unit 128.
　算出条件受信部１１４は、管理装置９０の算出条件送信部１０２から送信された算出条件を受信する。算出条件受信部１１４において受信された算出条件は、記憶装置３２のデータ記憶部１２８に記憶される。 The calculation condition receiving unit 114 receives the calculation conditions transmitted from the calculation condition transmitting unit 102 of the management device 90. The calculation conditions received by the calculation condition receiving unit 114 are stored in the data storage unit 128 of the storage device 32.
　物理量取得部１１６は、射出成形機１６及び外部センサ５０から射出成形機１６の状態を示す物理量を取得する。物理量取得部１１６において取得された物理量は、記憶装置３２に設けられたデータ記憶部１２８に記憶される。 The physical quantity acquisition unit 116 acquires physical quantities indicating the state of the injection molding machine 16 from the injection molding machine 16 and the external sensor 50. The physical quantities acquired by the physical quantity acquisition unit 116 are stored in a data storage unit 128 provided in the storage device 32.
　物理量抽出部１１８は、データ記憶部１２８に記憶されている物理量のデータから、算出条件受信部１１４が受信した算出条件の要素（モニタ値）として設定されている物理量のデータを抽出する。例えば、算出条件にモニタ値としてスクリュ位置が設定されている場合、物理量抽出部１１８は、データ記憶部１２８からスクリュ位置のデータを抽出する。 The physical quantity extraction unit 118 extracts data on physical quantities that are set as elements (monitor values) of the calculation conditions received by the calculation condition receiving unit 114 from the physical quantity data stored in the data storage unit 128. For example, if the screw position is set as a monitor value in the calculation conditions, the physical quantity extraction unit 118 extracts data on the screw position from the data storage unit 128.
　物理量送信部１２０は、物理量抽出部１１８において抽出された物理量のデータを管理装置９０の物理量受信部１０４に送信する。 The physical quantity transmission unit 120 transmits the data of the physical quantities extracted by the physical quantity extraction unit 118 to the physical quantity reception unit 104 of the management device 90.
　制御指令受信部１２２は、管理装置９０の制御指令送信部１０８から送信された制御指令を受信する。 The control command receiving unit 122 receives the control command sent from the control command sending unit 108 of the management device 90.
　制御部１２４は、制御指令受信部１２２において受信された制御指令を射出成形機１６に出力する。制御指令は、制御指令に対応付けられたＩ／Ｏユニット３４のアドレスにおける出力信号をＯＮとすることで、射出成形機１６に出力される。 The control unit 124 outputs the control command received by the control command receiving unit 122 to the injection molding machine 16. The control command is output to the injection molding machine 16 by turning ON the output signal at the address of the I/O unit 34 that is associated with the control command.
　監視部１２６は、制御部１２４から出力された制御指令に対応する物理量を監視する。監視部１２６は、制御部１２４から制御指令が出力されてから所定の監視時間が経過した時点において、制御指令に対応する物理量が制御指令に基づいた値でない場合、射出成形機１６の運転を強制終了させる。これにより、射出成形機１６の運転は停止する。監視部１２６が射出成形機１６の運転を強制終了させることに代えて、又は、運転を強制終了させることに加えて、監視部１２６は、射出成形機１６の表示機器にインタロック制御が行われていない旨を示すアラームメッセージを表示させてもよい。 The monitoring unit 126 monitors the physical quantity corresponding to the control command output from the control unit 124. If the physical quantity corresponding to the control command is not a value based on the control command when a predetermined monitoring time has elapsed since the control command was output from the control unit 124, the monitoring unit 126 forcibly terminates the operation of the injection molding machine 16. This stops the operation of the injection molding machine 16. Instead of or in addition to the monitoring unit 126 forcibly terminating the operation of the injection molding machine 16, the monitoring unit 126 may display an alarm message on the display device of the injection molding machine 16 indicating that interlock control is not being performed.
　［各装置における処理］
　図１５は、入力装置１２において実行される処理を示すフローチャートである。この処理は、所定周期で繰り返し実行される。 [Processing in each device]
15 is a flowchart showing the process executed by the input device 12. This process is repeatedly executed at a predetermined cycle.
　ステップＳ２１において、選択肢取得部９２は、管理装置９０の記憶装置９８に設けられる選択肢記憶部１１０からインタロック信号に係る選択肢を取得する。その後、ステップＳ２２へ移行する。 In step S21, the option acquisition unit 92 acquires options related to the interlock signal from the option storage unit 110 provided in the storage device 98 of the management device 90. Then, the process proceeds to step S22.
　ステップＳ２２において、入力受付部９４は、オペレータによる選択肢の選択によって生成される算出条件の入力を受け付ける。その後、処理を終了する。 In step S22, the input reception unit 94 receives input of the calculation conditions generated by the operator selecting an option. Then, the process ends.
　図１６は、管理装置９０において実行される処理を示すフローチャートである。この処理は、所定周期で繰り返し実行される。 FIG. 16 is a flowchart showing the process executed by the management device 90. This process is executed repeatedly at a predetermined interval.
　ステップＳ３１において、算出条件取得部１００は、入力装置１２の入力受付部９４が受け付けた算出条件を取得する。その後、ステップＳ３２へ移行する。 In step S31, the calculation condition acquisition unit 100 acquires the calculation conditions accepted by the input acceptance unit 94 of the input device 12. Then, the process proceeds to step S32.
　ステップＳ３２において、算出条件送信部１０２は、算出条件記憶部１１２に記憶される算出条件を、制御装置１４に送信する。その後、ステップＳ３３へ移行する。 In step S32, the calculation condition transmission unit 102 transmits the calculation conditions stored in the calculation condition storage unit 112 to the control device 14. Then, the process proceeds to step S33.
　ステップＳ３３において、物理量受信部１０４は、制御装置１４の物理量送信部１２０が送信した物理量を受信する。その後、ステップＳ３４へ移行する。 In step S33, the physical quantity receiving unit 104 receives the physical quantity transmitted by the physical quantity transmitting unit 120 of the control device 14. Then, the process proceeds to step S34.
　ステップＳ３４において、インタロック信号算出部１０６は、物理量受信部１０４が受信した物理量が、算出条件記憶部１１２に記憶された算出条件を満たすか否かを判定する。物理量が算出条件を満たす場合、ステップＳ３５へ移行する。物理量が算出条件を満たさない場合、ステップＳ３６へ移行する。 In step S34, the interlock signal calculation unit 106 determines whether the physical quantity received by the physical quantity receiving unit 104 satisfies the calculation condition stored in the calculation condition storage unit 112. If the physical quantity satisfies the calculation condition, the process proceeds to step S35. If the physical quantity does not satisfy the calculation condition, the process proceeds to step S36.
　ステップＳ３５において、インタロック信号算出部４０は、インタロック信号をＯＮにする。その後、ステップＳ３７へ移行する。 In step S35, the interlock signal calculation unit 40 turns the interlock signal ON. Then, the process proceeds to step S37.
　ステップＳ３６において、インタロック信号算出部４０は、インタロック信号をＯＦＦにする。その後、ステップＳ３７へ移行する。 In step S36, the interlock signal calculation unit 40 turns off the interlock signal. Then, the process proceeds to step S37.
　ステップＳ３７において、制御指令送信部１０８は、インタロック信号に対応付けられた制御指令を制御装置１４に送信する。その後、処理を終了する。 In step S37, the control command transmission unit 108 transmits a control command associated with the interlock signal to the control device 14. Then, the process ends.
　図１７は、制御装置１４において実行される処理を示すフローチャートである。この処理は、所定周期で繰り返し実行される。 FIG. 17 is a flowchart showing the process executed by the control device 14. This process is executed repeatedly at a predetermined interval.
　ステップＳ４１において、算出条件受信部１１４は、管理装置９０の算出条件送信部１０２から送信された算出条件を受信する。その後、ステップＳ４２へ移行する。 In step S41, the calculation condition receiving unit 114 receives the calculation conditions transmitted from the calculation condition transmitting unit 102 of the management device 90. Then, the process proceeds to step S42.
　ステップＳ４２において、物理量取得部１１６は、射出成形機１６及び外部センサ５０から射出成形機１６の状態を示す物理量を取得する。その後、ステップＳ４３へ移行する。 In step S42, the physical quantity acquisition unit 116 acquires physical quantities indicating the state of the injection molding machine 16 from the injection molding machine 16 and the external sensor 50. Then, the process proceeds to step S43.
　ステップＳ４３において、物理量抽出部１１８は、データ記憶部１２８に記憶されている物理量のデータから、算出条件受信部１１４が受信した算出条件の要素（モニタ値）として設定されている物理量のデータを抽出する。その後、ステップＳ４４へ移行する。 In step S43, the physical quantity extraction unit 118 extracts the physical quantity data set as elements (monitor values) of the calculation conditions received by the calculation condition receiving unit 114 from the physical quantity data stored in the data storage unit 128. Then, the process proceeds to step S44.
　ステップＳ４４において、物理量送信部１２０は、物理量抽出部１１８において抽出された物理量のデータを管理装置９０に送信する。その後、ステップＳ４５へ移行する。 In step S44, the physical quantity transmission unit 120 transmits the data on the physical quantities extracted by the physical quantity extraction unit 118 to the management device 90. Then, the process proceeds to step S45.
　ステップＳ４５において、制御指令受信部１２２は、管理装置９０の制御指令送信部１０８から送信された制御指令を受信する。その後、ステップＳ４６へ移行する。 In step S45, the control command receiving unit 122 receives the control command transmitted from the control command transmitting unit 108 of the management device 90. Then, the process proceeds to step S46.
　ステップＳ４６において、制御部１２４は、制御指令受信部１２２において受信された制御指令を射出成形機１６に出力する。その後、ステップＳ４７へ移行する。 In step S46, the control unit 124 outputs the control command received by the control command receiving unit 122 to the injection molding machine 16. Then, the process proceeds to step S47.
　ステップＳ４７において、監視部１２６は、射出成形機１６において制御指令に基づくインタロック制御が行われたか否かを判定する。射出成形機１６において制御指令に基づくインタロック制御が行われた場合には、処理を終了する。射出成形機１６において制御指令に基づくインタロック制御が行われない場合には、ステップＳ４８へ移行する。 In step S47, the monitoring unit 126 determines whether or not interlock control based on a control command has been performed in the injection molding machine 16. If interlock control based on a control command has been performed in the injection molding machine 16, the process ends. If interlock control based on a control command has not been performed in the injection molding machine 16, the process proceeds to step S48.
　ステップＳ４８において、監視部１２６は、射出成形機１６の運転を強制終了させる。これにより、射出成形機１６の運転は停止する。その後、処理を終了する。 In step S48, the monitoring unit 126 forcibly terminates the operation of the injection molding machine 16. This stops the operation of the injection molding machine 16. Then, the process ends.
　図１５のフローチャートに示す入力装置１２において実行される処理、図１６のフローチャートに示す管理装置９０において実行される処理、及び、図１７のフローチャートに示す制御装置１４において実行される処理において、処理の順序の変更、処理の追加、処理の削除等が行われてもよい。 The order of processes may be changed, processes may be added, processes may be deleted, etc. in the processes executed by the input device 12 shown in the flowchart of FIG. 15, the processes executed by the management device 90 shown in the flowchart of FIG. 16, and the processes executed by the control device 14 shown in the flowchart of FIG. 17.
　［作用効果］
　本実施形態の制御システム１０は、管理装置９０を有する。管理装置９０の選択肢記憶部１１０に記憶されている選択肢が、入力装置１２に送られる。また、管理装置９０の算出条件取得部１００が、入力装置１２の入力受付部９４において入力を受け付けた算出条件を取得する。また、管理装置９０のインタロック信号算出部１０６がインタロック信号を算出する。さらに、管理装置９０の制御指令送信部１０８は、インタロック信号に対応付けられた制御指令を制御装置１４に送信する。 [Action and Effect]
The control system 10 of this embodiment includes a management device 90. Options stored in an option storage unit 110 of the management device 90 are sent to the input device 12. A calculation condition acquisition unit 100 of the management device 90 acquires calculation conditions inputted and accepted by an input acceptance unit 94 of the input device 12. An interlock signal calculation unit 106 of the management device 90 calculates an interlock signal. A control command transmission unit 108 of the management device 90 transmits a control command associated with the interlock signal to the control device 14.
　すなわち、本実施形態の制御システム１０では、管理装置９０が、入力装置１２とデータのやり取りを行うとともに、インタロック信号の算出、インタロック信号に対応する制御信号の出力等を行う。これにより、制御装置１４は、射出成形機１６の制御に係る計算処理を行い、インタロック制御に係る他の計算処理は管理装置９０により行われる。その結果、制御システム１０は、制御装置１４の計算負荷を低減できる。 In other words, in the control system 10 of this embodiment, the management device 90 exchanges data with the input device 12, calculates the interlock signal, and outputs a control signal corresponding to the interlock signal. As a result, the control device 14 performs calculation processing related to the control of the injection molding machine 16, and other calculation processing related to interlock control is performed by the management device 90. As a result, the control system 10 can reduce the calculation load on the control device 14.
　上記実施形態に関し、更に以下の付記を開示する。 The following additional notes are provided regarding the above embodiment.
　（付記１）
　射出成形機（１６）を制御する制御システム（１０）であって、当該制御システムは、前記射出成形機の状態を示す物理量を取得する物理量取得部（３８、１１６）と、前記射出成形機に対してインタロック制御を行う制御指令に基づいて、前記射出成形機を制御する制御部（４２、１２４）と、前記射出成形機における前記物理量に基づき、前記射出成形機において前記制御指令に基づく動作が行われたか否かを監視する監視部（４４、１２６）と、を備え、前記監視部は、前記制御部から前記制御指令を受信してから所定時間経過した後に、前記射出成形機において前記制御指令に基づく動作が行われない場合、前記制御指令に基づく前記射出成形機の制御を中止又は前記射出成形機の運転を停止させる。 (Appendix 1)
A control system (10) for controlling an injection molding machine (16), the control system comprising: a physical quantity acquisition unit (38, 116) for acquiring physical quantities indicative of a state of the injection molding machine; a control unit (42, 124) for controlling the injection molding machine based on a control command for performing interlock control on the injection molding machine; and a monitoring unit (44, 126) for monitoring, based on the physical quantities in the injection molding machine, whether or not an operation based on the control command has been performed in the injection molding machine, wherein, if a predetermined time has elapsed since receiving the control command from the control unit, the monitoring unit discontinues control of the injection molding machine based on the control command or stops operation of the injection molding machine.
　（付記２）
　上記付記１に記載の制御システムにおいて、前記制御システムは、少なくとも１台の前記射出成形機を制御するシステムであって、前記射出成形機の各々に対応付けられたインタロック信号に係る選択肢を取得する選択肢取得部（２６）と、前記射出成形機の各々に対応する前記インタロック信号を算出するための条件であって、オペレータによる前記選択肢の選択により生成される算出条件の入力を受け付ける入力受付部（２８）と、前記算出条件を取得する算出条件取得部（３６）と、前記算出条件に対応する前記射出成形機における前記物理量が、当該算出条件を満たす場合、当該算出条件に基づいて当該射出成形機に対する前記インタロック信号を算出するインタロック信号算出部（４０）と、を備え、前記制御部は、前記射出成形機に対する前記インタロック信号に対応付けられた前記制御指令に基づいて、当該射出成形機を制御してもよい。 (Appendix 2)
In the control system described in Supplementary Note 1 above, the control system is a system for controlling at least one of the injection molding machines, and includes an option acquisition unit (26) that acquires options related to an interlock signal corresponding to each of the injection molding machines, an input receiving unit (28) that accepts input of calculation conditions that are conditions for calculating the interlock signal corresponding to each of the injection molding machines and are generated by an operator selecting the option, a calculation condition acquisition unit (36) that acquires the calculation conditions, and an interlock signal calculation unit (40) that calculates the interlock signal for the injection molding machine based on the calculation conditions when the physical quantity in the injection molding machine that corresponds to the calculation conditions satisfies the calculation conditions, and the control unit may control the injection molding machine based on the control command associated with the interlock signal for the injection molding machine.
　（付記３）
　上記付記１に記載の制御システムにおいて、前記制御システムは、少なくとも１台の前記射出成形機を制御するシステムであって、前記射出成形機の各々に対応付けられたインタロック信号に係る選択肢を取得する選択肢取得部（９２）と、前記射出成形機の各々に対応するインタロック信号を算出するための条件であって、オペレータによる前記選択肢の選択により生成される算出条件の入力を受け付ける入力受付部（９４）と、前記射出成形機の各々に対して設けられた制御装置（１４）と、前記制御装置と通信可能に設けられる管理装置（９０）と、を備え、前記管理装置は、前記射出成形機に対応する前記算出条件を取得する算出条件取得部（１００）と、前記物理量取得部において取得された前記物理量が、当該算出条件を満たす場合、当該算出条件に基づいて当該射出成形機に対する前記インタロック信号を算出するインタロック信号算出部（１０６）と、を有し、前記制御装置は、前記物理量取得部と、前記制御部と、前記監視部とを有し、前記制御部は、前記射出成形機に対する前記インタロック信号に対応付けられた前記制御指令に基づいて、当該射出成形機を制御してもよい。 (Appendix 3)
In the control system described in Supplementary Note 1, the control system is a system for controlling at least one of the injection molding machines, and includes: an option acquisition unit (92) that acquires options related to an interlock signal associated with each of the injection molding machines; an input receiving unit (94) that accepts input of calculation conditions that are conditions for calculating an interlock signal corresponding to each of the injection molding machines and are generated by an operator selecting the option; a control device (14) provided for each of the injection molding machines; and a management device (90) provided to be able to communicate with the control device, wherein the management device includes: a calculation condition acquisition unit (100) that acquires the calculation conditions corresponding to the injection molding machine; and an interlock signal calculation unit (106) that calculates the interlock signal for the injection molding machine based on the calculation conditions when the physical quantity acquired by the physical quantity acquisition unit satisfies the calculation conditions, and the control device includes the physical quantity acquisition unit, the control unit, and the monitoring unit, and the control unit may control the injection molding machine based on the control command associated with the interlock signal for the injection molding machine.
　（付記４）
　上記付記２又は３に記載の制御システムにおいて、前記選択肢は、成形工程を選択する選択肢、前記物理量を選択する選択肢、選択された前記物理量と閾値との大小関係を比較する比較方法を選択する選択肢、及び、前記インタロック信号に対応付ける前記制御指令を選択する選択肢の少なくとも１つを含んでもよい。 (Appendix 4)
In the control system described in Supplementary Note 2 or 3 above, the options may include at least one of an option to select a molding process, an option to select the physical quantity, an option to select a comparison method for comparing the magnitude relationship between the selected physical quantity and a threshold value, and an option to select the control command to be associated with the interlock signal.
　（付記５）
　上記付記２～４のいずれか１つに記載の制御システムにおいて、前記算出条件は、成形工程の条件、前記物理量と閾値との大小関係の条件、及び、前記インタロック信号に対応付けられる前記制御指令を含んでもよい。 (Appendix 5)
In the control system described in any one of Supplementary Notes 2 to 4 above, the calculation conditions may include conditions for a molding process, conditions for a magnitude relationship between the physical quantity and a threshold value, and the control command corresponding to the interlock signal.
　（付記６）
　上記付記５に記載の制御システムにおいて、前記算出条件は、前記成形工程の条件、及び、前記物理量と閾値との大小関係の条件が成立してから前記インタロック信号を出力するまでの遅延時間を含んでもよい。 (Appendix 6)
In the control system described in Supplementary Note 5 above, the calculation conditions may include a condition for the molding process and a delay time from when a condition for a magnitude relationship between the physical quantity and a threshold value is satisfied to when the interlock signal is output.
　（付記７）
　上記付記２～６のいずれか１つに記載の制御システムにおいて、前記制御指令は、前記射出成形機の運転を停止させる指令、所定の成形工程における動作を許可する指令、所定の成形工程における動作を禁止する指令、周辺機器の動作を許可する指令、周辺機器の動作を禁止する指令、現在の成形工程の実行を中断させ次の成形工程を実行させる指令、前記射出成形機の運転条件の変更を許可する指令、及び、前記射出成形機の運転条件の変更を禁止する指令の少なくとも１つを含んでもよい。 (Appendix 7)
In the control system described in any one of Supplementary Notes 2 to 6 above, the control command may include at least one of a command to stop operation of the injection molding machine, a command to permit operation in a specified molding process, a command to prohibit operation in a specified molding process, a command to permit operation of a peripheral device, a command to prohibit operation of a peripheral device, a command to interrupt execution of a current molding process and execute a next molding process, a command to permit a change in operating conditions of the injection molding machine, and a command to prohibit a change in the operating conditions of the injection molding machine.
　（付記８）
　上記付記２～７のいずれか１つに記載の制御システムにおいて、前記オペレータからの入力を受け付ける入力装置（１２）を備え、前記入力装置は、前記選択肢取得部及び前記入力受付部を有してもよい。 (Appendix 8)
The control system according to any one of Supplementary Notes 2 to 7 may further include an input device (12) that accepts input from the operator, and the input device may have the option acquisition unit and the input acceptance unit.
　（付記９）
　上記付記８に記載の制御システムにおいて、前記入力装置は、前記算出条件を、ネットワークを介して接続された複数の前記射出成形機の各々に対して設けられた制御装置に送信してもよい。 (Appendix 9)
In the control system described in Supplementary Note 8 above, the input device may transmit the calculation conditions to a control device provided for each of the multiple injection molding machines connected via a network.
　（付記１０）
　上記付記２～９のいずれか１つに記載の制御システムにおいて、前記算出条件の成立の有無を示す表示を表示部に表示させてもよい。 (Appendix 10)
In the control system according to any one of Supplementary Notes 2 to 9, a display showing whether or not the calculation condition is satisfied may be displayed on a display unit.
　（付記１１）
　上記付記２～１０のいずれか１つに記載の制御システムにおいて、前記物理量は、金型が有するセンサ、又は、前記射出成形機が出荷された後に前記射出成形機に取り付けられたセンサにより検出されてもよい。 (Appendix 11)
In the control system described in any one of Supplementary Notes 2 to 10 above, the physical quantity may be detected by a sensor included in a mold, or a sensor attached to the injection molding machine after the injection molding machine is shipped.
　（付記１２）
　射出成形機を制御する制御システム（１０）における制御方法であって、当該制御方法は、前記射出成形機の状態を示す物理量を取得し、前記射出成形機に対してインタロック制御を行う制御指令に基づいて、前記射出成形機を制御し、前記射出成形機における前記物理量に基づき、前記射出成形機において前記制御指令に基づく動作が行われたか否かを監視し、前記制御指令に基づく前記射出成形機の制御が開始されてから所定時間経過した後に、前記射出成形機において前記制御指令に基づく動作が行われない場合、前記制御指令に基づく前記射出成形機の制御を中止又は前記射出成形機の運転を停止させる。 (Appendix 12)
A control method in a control system (10) that controls an injection molding machine, the control method acquires physical quantities indicating a state of the injection molding machine, controls the injection molding machine based on a control command that performs interlock control on the injection molding machine, monitors whether or not an operation based on the control command has been performed in the injection molding machine based on the physical quantities in the injection molding machine, and, if an operation based on the control command has not been performed in the injection molding machine after a predetermined time has elapsed since control of the injection molding machine based on the control command was started, discontinues control of the injection molding machine based on the control command or stops operation of the injection molding machine.
　本開示について詳述したが、本開示は上述した個々の実施形態に限定されるものではない。これらの実施形態は、本開示の要旨を逸脱しない範囲で、又は、請求の範囲に記載された内容とその均等物から導き出される本開示の趣旨を逸脱しない範囲で、種々の追加、置き換え、変更、部分的削除等が可能である。また、これらの実施形態は、組み合わせて実施することもできる。例えば、上述した実施形態において、各動作の順序や各処理の順序は、一例として示したものであり、これらに限定されるものではない。また、上述した実施形態の説明に数値又は数式が用いられている場合も同様である。 Although the present disclosure has been described in detail, the present disclosure is not limited to the individual embodiments described above. Various additions, substitutions, modifications, partial deletions, etc. are possible to these embodiments without departing from the gist of the present disclosure, or without departing from the gist of the present disclosure derived from the contents described in the claims and their equivalents. These embodiments can also be implemented in combination. For example, in the above-mentioned embodiments, the order of each operation and the order of each process are shown as examples, and are not limited to these. The same applies when numerical values or formulas are used to explain the above-mentioned embodiments.
１０…制御システム　　　　　　　　１２…入力装置
１４…制御装置　　　　　　　　　　１６…射出成形機
２６、９２…選択肢取得部　　　　　２８、９４…入力受付部
３６、１００…算出条件取得部　　　３８、１１６…物理量取得部
４０、１０６…インタロック信号算出部
４２、１２４…制御部　　　　　　　４４、１２６…監視部
７２…関係表示部　　　　　　　　　９０…管理装置 REFERENCE SIGNS LIST 10... control system 12... input device 14... control device 16... injection molding machine 26, 92... option acquisition unit 28, 94... input reception unit 36, 100... calculation condition acquisition unit 38, 116... physical quantity acquisition unit 40, 106... interlock signal calculation unit 42, 124... control unit 44, 126... monitoring unit 72... relationship display unit 90... management device

Claims (12)

  1. 　射出成形機を制御する制御システムであって、
    　前記射出成形機の状態を示す物理量を取得する物理量取得部と、
    　前記射出成形機に対してインタロック制御を行う制御指令に基づいて、前記射出成形機を制御する制御部と、
    　前記射出成形機における前記物理量に基づき、前記射出成形機において前記制御指令に基づく動作が行われたか否かを監視する監視部と、
    　を備え、
    　前記監視部は、前記制御部から前記制御指令を受信してから所定時間経過した後に、前記射出成形機において前記制御指令に基づく動作が行われない場合、前記制御指令に基づく前記射出成形機の制御を中止又は前記射出成形機の運転を停止させる、制御システム。     A control system for controlling an injection molding machine, comprising:
    a physical quantity acquisition unit that acquires a physical quantity indicating a state of the injection molding machine;
    a control unit that controls the injection molding machine based on a control command for performing an interlock control on the injection molding machine;
    a monitoring unit that monitors whether or not an operation based on the control command has been performed in the injection molding machine based on the physical quantity in the injection molding machine;
    Equipped with
    A control system in which, if an operation based on the control command is not performed in the injection molding machine after a predetermined time has elapsed since receiving the control command from the control unit, the monitoring unit discontinues control of the injection molding machine based on the control command or stops operation of the injection molding machine.
  2. 　請求項１に記載の制御システムにおいて、
    　前記制御システムは、少なくとも１台の前記射出成形機を制御するシステムであって、
    　前記射出成形機の各々に対応付けられたインタロック信号に係る選択肢を取得する選択肢取得部と、
    　前記射出成形機の各々に対応する前記インタロック信号を算出するための条件であって、オペレータによる前記選択肢の選択により生成される算出条件の入力を受け付ける入力受付部と、
    　前記算出条件を取得する算出条件取得部と、
    　前記算出条件に対応する前記射出成形機における前記物理量が、当該算出条件を満たす場合、当該算出条件に基づいて当該射出成形機に対する前記インタロック信号を算出するインタロック信号算出部と、
    　を備え、
    　前記制御部は、前記射出成形機に対する前記インタロック信号に対応付けられた前記制御指令に基づいて、当該射出成形機を制御する、制御システム。     2. The control system of claim 1,
    The control system is a system for controlling at least one of the injection molding machines,
    an option acquisition unit that acquires options related to an interlock signal associated with each of the injection molding machines;
    an input receiving unit that receives an input of a calculation condition for calculating the interlock signal corresponding to each of the injection molding machines, the calculation condition being generated by an operator selecting one of the options; and
    A calculation condition acquisition unit that acquires the calculation conditions;
    an interlock signal calculation unit that calculates the interlock signal for the injection molding machine based on the calculation condition when the physical quantity in the injection molding machine corresponding to the calculation condition satisfies the calculation condition;
    Equipped with
    The control unit controls the injection molding machine based on the control command associated with the interlock signal for the injection molding machine.
  3. 　請求項１に記載の制御システムにおいて、
    　前記制御システムは、少なくとも１台の前記射出成形機を制御するシステムであって、
    　前記射出成形機の各々に対応付けられたインタロック信号に係る選択肢を取得する選択肢取得部と、
    　前記射出成形機の各々に対応する前記インタロック信号を算出するための条件であって、オペレータによる前記選択肢の選択により生成される算出条件の入力を受け付ける入力受付部と、
    　前記射出成形機の各々に対して設けられた制御装置と、
    　前記制御装置と通信可能に設けられる管理装置と、
    　を備え、
    　前記管理装置は、
    　前記射出成形機に対応する前記算出条件を取得する算出条件取得部と、
    　前記物理量取得部において取得された前記物理量が、当該算出条件を満たす場合、当該算出条件に基づいて当該射出成形機に対する前記インタロック信号を算出するインタロック信号算出部と、
    　を有し、
    　前記制御装置は、前記物理量取得部と、前記制御部と、前記監視部とを有し、
    　前記制御部は、前記射出成形機に対する前記インタロック信号に対応付けられた前記制御指令に基づいて、当該射出成形機を制御する、制御システム。     2. The control system of claim 1,
    The control system is a system for controlling at least one of the injection molding machines,
    an option acquisition unit that acquires options related to an interlock signal associated with each of the injection molding machines;
    an input receiving unit that receives an input of a calculation condition for calculating the interlock signal corresponding to each of the injection molding machines, the calculation condition being generated by an operator selecting one of the options; and
    A control device provided for each of the injection molding machines;
    A management device that is provided so as to be able to communicate with the control device;
    Equipped with
    The management device includes:
    a calculation condition acquisition unit that acquires the calculation conditions corresponding to the injection molding machine;
    an interlock signal calculation unit that calculates the interlock signal for the injection molding machine based on the calculation condition when the physical quantity acquired by the physical quantity acquisition unit satisfies the calculation condition;
    having
    The control device includes the physical quantity acquisition unit, the control unit, and the monitoring unit,
    The control unit controls the injection molding machine based on the control command associated with the interlock signal for the injection molding machine.
  4. 　請求項２又は３に記載の制御システムにおいて、
    　前記選択肢は、
    　成形工程を選択する選択肢、前記物理量を選択する選択肢、
    　選択された前記物理量と閾値との大小関係を比較する比較方法を選択する選択肢、
    　及び、前記インタロック信号に対応付ける前記制御指令を選択する選択肢の少なくとも１つを含む、制御システム。     4. The control system according to claim 2,
    The options are:
    An option for selecting a molding process, an option for selecting the physical quantity,
    An option for selecting a comparison method for comparing the magnitude relationship between the selected physical quantity and a threshold value;
    and a control system including at least one option for selecting the control command to be associated with the interlock signal.
  5. 　請求項２～４のいずれか１項に記載の制御システムにおいて、
    　前記算出条件は、
    　成形工程の条件、
    　前記物理量と閾値との大小関係の条件、
    　及び、前記インタロック信号に対応付けられる前記制御指令を含む、制御システム。     In the control system according to any one of claims 2 to 4,
    The calculation conditions are:
    Molding process conditions,
    A condition of a magnitude relationship between the physical quantity and a threshold value;
    and a control system including the control command associated with the interlock signal.
  6. 　請求項５に記載の制御システムにおいて、
    　前記算出条件は、前記成形工程の条件、及び、前記物理量と閾値との大小関係の条件が成立してから前記インタロック信号を出力するまでの遅延時間を含む、制御システム。     6. The control system of claim 5,
    The calculation conditions include a condition of the molding process and a delay time from when a condition of a magnitude relationship between the physical quantity and a threshold value is satisfied to when the interlock signal is output.
  7. 　請求項２～６のいずれか１項に記載の制御システムにおいて、
    　前記制御指令は、
    　前記射出成形機の運転を停止させる指令、
    　所定の成形工程における動作を許可する指令、
    　所定の成形工程における動作を禁止する指令、
    　周辺機器の動作を許可する指令、
    　周辺機器の動作を禁止する指令、
    　現在の成形工程の実行を中断させ次の成形工程を実行させる指令、
    　前記射出成形機の運転条件の変更を許可する指令、
    　及び、前記射出成形機の運転条件の変更を禁止する指令の少なくとも１つを含む、制御システム。     In the control system according to any one of claims 2 to 6,
    The control command is
    A command to stop the operation of the injection molding machine;
    Commands to authorize operations during a given molding process;
    A command to prohibit an action during a given molding process;
    Commands to allow peripheral devices to operate,
    A command to prohibit the operation of peripheral devices,
    A command to interrupt the execution of the current molding process and execute the next molding process;
    A command to permit a change in the operating conditions of the injection molding machine;
    and a control system including at least one command to prohibit a change in an operating condition of the injection molding machine.
  8. 　請求項２～７のいずれか１項に記載の制御システムにおいて、
    　前記オペレータからの入力を受け付ける入力装置を備え、
    　前記入力装置は、前記選択肢取得部及び前記入力受付部を有する、制御システム。     In the control system according to any one of claims 2 to 7,
    an input device for receiving an input from the operator,
    The input device includes the option acquisition unit and the input reception unit.
  9. 　請求項８に記載の制御システムにおいて、
    　前記入力装置は、前記算出条件を、ネットワークを介して接続された複数の前記射出成形機の各々に対して設けられた制御装置に送信する、制御システム。     9. The control system of claim 8,
    The input device transmits the calculation conditions to a control device provided for each of the multiple injection molding machines connected via a network.
  10. 　請求項２～９のいずれか１項に記載の制御システムにおいて、
    　前記算出条件の成立の有無を示す表示を表示部に表示させる、制御システム。     In the control system according to any one of claims 2 to 9,
    A control system that causes a display unit to display an indication of whether the calculation condition is satisfied or not.
  11. 　請求項２～１０のいずれか１項に記載の制御システムにおいて、
    　前記物理量は、金型が有するセンサ、又は、前記射出成形機が出荷された後に前記射出成形機に取り付けられたセンサにより検出される、制御システム。     In the control system according to any one of claims 2 to 10,
    A control system in which the physical quantity is detected by a sensor provided in the mold or a sensor attached to the injection molding machine after the injection molding machine is shipped.
  12. 　射出成形機を制御する制御システムにおける制御方法であって、
    　前記射出成形機の状態を示す物理量を取得し、
    　前記射出成形機に対してインタロック制御を行う制御指令に基づいて、前記射出成形機を制御し、
    　前記射出成形機における前記物理量に基づき、前記射出成形機において前記制御指令に基づく動作が行われたか否かを監視し、
    　前記制御指令に基づく前記射出成形機の制御が開始されてから所定時間経過した後に、前記射出成形機において前記制御指令に基づく動作が行われない場合、前記制御指令に基づく前記射出成形機の制御を中止又は前記射出成形機の運転を停止させる、制御方法。     A control method for a control system that controls an injection molding machine, comprising:
    Acquire a physical quantity indicating a state of the injection molding machine;
    Controlling the injection molding machine based on a control command for performing interlock control on the injection molding machine;
    monitoring whether an operation based on the control command has been performed in the injection molding machine based on the physical quantity in the injection molding machine;
    a control method for controlling the injection molding machine based on the control command, the control of the injection molding machine based on the control command being discontinued or the operation of the injection molding machine being stopped if the injection molding machine does not perform an operation based on the control command after a predetermined time has elapsed since control of the injection molding machine based on the control command was started.
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04112020A (en) * 1990-08-31 1992-04-14 Mitsubishi Materials Corp Injection mold
JPH05322095A (en) * 1992-05-19 1993-12-07 Amada Co Ltd Safety device of automatic machine
JP2009061786A (en) * 2008-11-17 2009-03-26 Sumitomo Heavy Ind Ltd Mold monitoring device, method and program

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04112020A (en) * 1990-08-31 1992-04-14 Mitsubishi Materials Corp Injection mold
JPH05322095A (en) * 1992-05-19 1993-12-07 Amada Co Ltd Safety device of automatic machine
JP2009061786A (en) * 2008-11-17 2009-03-26 Sumitomo Heavy Ind Ltd Mold monitoring device, method and program

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