WO2022044320A1 - 対基板作業機 - Google Patents

対基板作業機 Download PDF

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Publication number
WO2022044320A1
WO2022044320A1 PCT/JP2020/032869 JP2020032869W WO2022044320A1 WO 2022044320 A1 WO2022044320 A1 WO 2022044320A1 JP 2020032869 W JP2020032869 W JP 2020032869W WO 2022044320 A1 WO2022044320 A1 WO 2022044320A1
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WO
WIPO (PCT)
Prior art keywords
safety
control circuit
input
execution unit
work execution
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PCT/JP2020/032869
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English (en)
French (fr)
Japanese (ja)
Inventor
秀範 丹羽
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株式会社Fuji
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Publication date
Application filed by 株式会社Fuji filed Critical 株式会社Fuji
Priority to JP2022545252A priority Critical patent/JP7441319B2/ja
Priority to PCT/JP2020/032869 priority patent/WO2022044320A1/ja
Publication of WO2022044320A1 publication Critical patent/WO2022044320A1/ja

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K13/00—Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components

Definitions

  • This specification relates to a board-to-board working machine that performs predetermined work on a board.
  • the safety management device disclosed in Patent Document 1 includes multiple safety function units on one processor, and determines the normality / abnormality of each safety function unit. According to the description of the embodiment, the diagnostic processing unit of the safety function unit is duplicated, the other diagnostic processing unit is operated when an abnormality of one diagnostic processing unit is determined, and the abnormality of the other diagnostic processing unit is further detected. If it is determined, the CPU (processor) is reset. As a result, even if a part of the safety function becomes abnormal, other normal safety functions can be continuously performed.
  • control digital controller of Patent Document 2 performs a means for performing a self-diagnosis, a means for storing a serious error detected by the self-diagnosis, and a retry of the self-diagnosis for a detected minor error.
  • a means, a means for storing the number of retries, and a means for determining the seriousness of the error from the number of retries are provided. According to this, it is said that the maintainability can be improved by storing a serious error, and the usability can be improved by retrying a minor error.
  • Patent Document 1 As a countermeasure against these problems, a configuration in which the multiplexing technology of Patent Document 1 is applied to a safety control circuit cannot be adopted because it causes a significant cost increase. Further, even if the self-diagnosis function of Patent Document 2 is added to the safety control circuit, the defect itself due to the influence of disturbance cannot be eliminated.
  • This specification describes a work execution unit that operates by receiving power from a power source to perform predetermined work on a board, a safety monitoring unit that outputs a safety detection signal when the safety of the machine is ensured, and a start signal. It is started by input, and when the safety detection signal is input, the power supply is supplied to the work execution unit, and when the safety detection signal is not input, the power supply is not supplied to the work execution unit. When the safety control circuit and the power supply are not supplied to the work execution unit even if the first start signal is input to the safety control circuit, the second start signal is input to the safety control circuit again.
  • an anti-board working machine including a restart control unit for starting.
  • the restart control unit safely secures the second start signal. Input to the control circuit and restart. Therefore, the safety control circuit can be restarted automatically. Then, in many cases of restart due to the influence of the disturbance, the safety control circuit operates well, the power supply is supplied to the work execution unit, and the board work machine starts operating normally. As a result, the delay in starting the operation of the board-to-board working machine is suppressed, and in addition, the trouble of restarting by the operator becomes unnecessary.
  • FIG. 1 It is a perspective view which shows the whole structure of the component mounting machine which is an example of the board-to-board work machine of an embodiment. It is a figure explaining the structure about the safety assurance of a component mounting machine, and is the figure which included a functional block and a control circuit. It is a figure of the time chart explaining the normal operation about the safety assurance at the start of operation of a component mounting machine. It is a figure of the time chart explaining the operation when the restart for safety assurance is performed at the time of starting the operation of a component mounting machine. It is a figure explaining the modification of the configuration regarding the safety assurance of a component mounting machine.
  • the component mounting machine 1 (board-to-board working machine of the embodiment)
  • the overall configuration of the component-mounting machine 1 which is an example of the board-to-board working machine of the embodiment will be described with reference to FIG.
  • the direction from the upper left to the lower right of FIG. 1 is the X-axis direction for transporting the substrate K, and the direction from the upper right to the lower left is the Y-axis direction which is the front-rear direction of the component mounting machine 1.
  • the component mounting machine 1 repeatedly carries out the component mounting work.
  • the component mounting machine 1 includes a board transfer device 2, a component supply device 3, a component transfer device 4, a component camera 5, a control device 6 (see FIG. 2), a base 10, and the like.
  • the board transfer device 2 is composed of a first guide rail 21, a second guide rail 22, a pair of conveyor belts, a clamp device 23, and the like.
  • the first guide rail 21 and the second guide rail 22 extend in the X-axis direction across the upper center of the base 10, and are assembled to the base 10 so as to be parallel to each other.
  • a pair of conveyor belts arranged in parallel with each other separated from each other are arranged side by side.
  • the pair of conveyor belts rotate around with the substrate K placed on the conveyor transport surface, and carry in and out the substrate K to the mounting implementation position set in the central portion of the base 10.
  • a clamp device 23 is provided below the mounting position. The clamping device 23 pushes up the substrate K, clamps it in a horizontal posture, and positions it at the mounting implementation position.
  • the parts supply device 3 is detachably mounted on the rear side of the parts mounting machine 1.
  • the component supply device 3 is configured by arranging a plurality of feeder devices 31 in a row on the device pallet 35.
  • the feeder device 31 includes a main body 32, a supply reel 33 provided on the rear side of the main body 32, and a component take-out portion 34 provided on the upper part of the front end of the main body 32.
  • a carrier tape in which a large number of parts are enclosed at a predetermined pitch is wound and held on the supply reel 33. When the carrier tape is sent out at a predetermined pitch, the parts are released from the sealed state and are sequentially sent to the part take-out unit 34.
  • the component transfer device 4 is composed of a pair of Y-axis rails 41, a Y-axis moving table 42, a Y-axis motor 43, an X-axis moving table 44, an X-axis motor 45, a mounting head 46, and the like.
  • the pair of Y-axis rails 41 are provided from the front portion of the base 10 to the upper portion of the component supply device 3 at the rear portion.
  • the Y-axis moving table 42 is loaded on a pair of Y-axis rails 41.
  • the Y-axis moving table 42 is driven from the Y-axis motor 43 via a ball screw mechanism and moves in the Y-axis direction.
  • the X-axis moving table 44 is loaded on the Y-axis moving table 42.
  • the X-axis moving table 44 is driven from the X-axis motor 45 via a ball screw mechanism and moves in the X-axis direction.
  • the mounting head 46 is arranged on the rear side of the X-axis moving table 44.
  • the mounting head 46 has a rotary tool 47 on the lower side.
  • a plurality of suction nozzles are arranged in an annular shape under the rotary tool 47.
  • the suction nozzle set at the operating position is driven by the Z-axis motor 48 to move up and down.
  • the suction nozzle sucks the component from the component take-out unit 34 by supplying a negative pressure, and mounts the component on the substrate K by supplying a positive pressure.
  • a pinching chuck for sandwiching the component may be used.
  • the board camera 49 is provided under the X-axis moving table 44 and is arranged side by side with the mounting head 46.
  • the board camera 49 captures a position mark attached to the positioned board K.
  • the image data acquired by the imaging is image-processed, and the accurate mounting position of the substrate K is detected.
  • the component camera 5 is provided upward on the upper surface of the base 10 between the board transfer device 2 and the component supply device 3.
  • the component camera 5 photographs a state in which a plurality of suction nozzles of the mounting head 46 are sucking the component by the component extraction unit 34 and moving to the substrate K.
  • the component camera 5 can collectively image the components held by the plurality of suction nozzles.
  • the acquired image data is image-processed to confirm the adsorption state of the component, the vertical and horizontal dimensions of the component, the electrode arrangement, and the like.
  • the board transfer device 2, the parts supply device 3, the parts transfer device 4, and the parts camera 5 correspond to a work execution unit that operates by receiving power from a power source and performs a predetermined work on the board K. Since the work execution unit has a movable portion, a protective cover 11 is provided to ensure the safety inside the component mounting machine 1.
  • the protective cover 11 is opened and closed by an operator. With the protective cover 11 open, the operator can visually check the inside of the machine, the state of the board K, and the like. Safety is not ensured when the protective cover 11 is open, and the supply of power to the work execution unit (board transfer device 2, parts supply device 3, parts transfer device 4, and parts camera 5) is safety controlled. It is stopped by the circuit 8 (described later).
  • the control device 6 (see FIG. 2) holds job data for each type of the substrate K and controls the mounting work.
  • Job data is data that describes detailed procedures and methods for mounting work.
  • the control device 6 controls by transmitting various commands to the work execution unit (board transfer device 2, component supply device 3, component transfer device 4, and component camera 5). Further, the control device 6 receives information on the operation status and the like from the work execution unit.
  • the control device 6 may be configured by a single computer device, or may be configured by distributing the functions to a plurality of computer devices.
  • control device 6 includes an input unit 61 and a display unit 62 as a man-machine interface.
  • the operator inputs a command to start operation using the input unit 61.
  • the control device 6 that has received the operation start command performs the initial processing by utilizing the control power supply of the work execution unit.
  • Initial processing includes confirmation of the initial position of the moving part, transition from the hibernation state of the moving part to the standby state, and calibration of various sensors.
  • the control device 6 appropriately displays the content of the operator's command, the progress status of the initial processing, the operating status during operation, and the like on the display unit 62.
  • the configuration related to ensuring safety includes a safety monitoring unit, a safety control circuit 8, and a restart control unit 65.
  • the safety monitoring unit is a part that monitors the safety inside the parts mounting machine 1, and outputs a safety detection signal when the safety inside the machine is ensured.
  • the safety monitoring unit outputs a safety detection signal for each of the plurality of safety-related monitoring items, and specifically includes a cover switch 71 and an emergency stop button 75.
  • the cover switch 71 is a switch that monitors the open / closed state of the protective cover 11.
  • the cover switch 71 has an output contact 72 for outputting a safety detection signal.
  • the output contact 72 has a specification of b-contact that conducts in a normal state when the protective cover 11 is closed and safety is ensured, and is shut off when the protective cover 11 is opened and safety is not ensured. That is, the output contact 72 conducts or is cut off depending on whether or not the cover switch 71 outputs a safety detection signal.
  • the emergency stop button 75 is omitted in FIG. 1, it is provided at a position where the side surface of the base 10 can be easily operated.
  • the emergency stop button 75 is a button pressed by an operator who determines that safety is not ensured.
  • the emergency stop button 75 functions regardless of the state of the cover switch 71.
  • the emergency stop button 75 has an output contact 76 for outputting a safety detection signal.
  • the output contact 76 is a b-contact specification with a cutoff holding function that conducts in a normal time when the emergency stop button 75 is not pressed and holds a cutoff state in an emergency when the emergency stop button 75 is pressed.
  • the history of pressing the emergency stop button 75 in other words, the cutoff state of the output contact 76 is released by pressing the emergency release button in the figure, and returns to the conduction state.
  • the output contact 76 conducts or is cut off depending on the presence or absence of the safety detection signal that the emergency stop button 75 is not pressed and that the emergency stop button 75 has a history of pressing.
  • the safety monitoring unit only one of the cover switch 71 and the emergency stop button 75 may be used, or three or more parts may be used. Further, as the safety monitoring unit, a part other than the above, for example, a human sensing sensor or an image monitoring device for monitoring the excessive approach of the operator may be used. Further, as the safety detection signal of the safety monitoring unit, a signal other than the b contact, for example, an analog voltage signal or a communication signal may be used.
  • the safety control circuit 8 is started by inputting a start signal.
  • the safety control circuit 8 supplies power to the work execution unit (board transfer device 2, parts supply device 3, parts transfer device 4, and parts camera 5) to detect safety. Do not supply power to the work execution unit when no signal is input. Strictly speaking, the safety control circuit 8 supplies power to the work execution unit only when all the safety detection signals of the plurality of monitoring items are input and the operation preparation signal (described later) is input. Power.
  • the safety control circuit 8 is composed of a safety input circuit 81, an operation preparation input circuit 82, a main body circuit 84, a safety output relay 87, and the like.
  • the safety input circuit 81 is configured by connecting the output contact 72 of the cover switch 71 and the output contact 76 of the emergency stop button 75 in series. Both ends of the safety input circuit 81 are connected to the main body circuit 84.
  • the operation preparation input circuit 82 is composed of an operation preparation contact 83, and both ends thereof are connected to the main body circuit 84.
  • the operation preparation contact 83 transitions from the cutoff state to the conduction state by the operation preparation signal from the restart control unit 65.
  • the main body circuit 84 is composed of a sequence circuit, a programmable controller, and the like, and operates according to a predetermined logic sequence.
  • the main body circuit 84 can confirm that the safety detection signals of all the monitoring items are input by the continuity state of the safety input circuit 81. Further, the main body circuit 84 can confirm that the operation preparation signal is input by the continuity state of the operation preparation input circuit 82.
  • the main body circuit 84 has a command input terminal 85 that receives an operation command.
  • the main body circuit 84 recognizes the rising edge of the operation command input to the command input terminal 85 as a start signal, and performs a predetermined start process. Specifically, the main body circuit 84 confirms that the operation command has continued for a minute time after the rise of the operation command, or that the operation command is still input after a minute time has elapsed from the rise of the operation command. After confirming, start the start process. Further, the main body circuit 84 continuously carries out the safety monitoring process during operation while the operation command is input to the command input terminal 85 after the start process is completed. The details of the start processing and the safety monitoring processing will be described later.
  • the main body circuit 84 controls the excitation of the safety output relay 87 from the output terminal 86.
  • the safety output relay 87 has a main contact 88 and an auxiliary contact 89.
  • the main contact 88 is inserted in the middle of the power supply line 13 that connects the power supply device 12 and the work execution unit (board transfer device 2, component supply device 3, component transfer device 4, and component camera 5).
  • the main contact 88 a contact is used from the viewpoint of fail-safe, and a contact capacity (maximum voltage, maximum current) commensurate with the work execution unit is secured.
  • the power supply device 12 supplies power to the work execution unit.
  • As the power source a specified DC voltage, an AC voltage of a commercial frequency, or the like can be exemplified.
  • the main body circuit 84 excites the safety output relay 87 and powers the work execution unit from the power supply device 12 only when the continuity state of the safety input circuit 81 and the continuity state of the operation preparation input circuit 82 are confirmed in the starting process. Supply power.
  • the auxiliary contact 89 is a contact that synchronizes with the state change of the main contact 88, and in the present embodiment, the same a contact as the main contact 88 is used. Further, the contact capacity of the auxiliary contact 89 may be smaller than that of the main contact 88.
  • the auxiliary contact 89 is not limited to this, and may be a b contact. Further, a c-contact in which the main contact 88 and the auxiliary contact 89 are integrated may be used. The state of the auxiliary contact 89 is input to the restart control unit 65.
  • the restart control unit 65 is realized by the software of the control device 6.
  • the restart control unit 65 is integrally provided with the control device 6 that controls the work execution unit (board transfer device 2, component supply device 3, component transfer device 4, and component camera 5).
  • the restart control unit 65 After receiving the operator's operation start command, the restart control unit 65 inputs an operation command to the command input terminal 85 of the main body circuit 84 of the safety control circuit 8. The rise of this operation command becomes the above-mentioned start signal. Therefore, the restart control unit 65 also serves as an initial start control unit that inputs the initial start signal to the safety control circuit 8.
  • restart control unit 65 safely controls the second start signal when the power supply is not supplied to the work execution unit even after a predetermined time has elapsed since the first start signal was input to the safety control circuit 8. Input to circuit 8. Further, the restart control unit 65 warns of an error stop when the power supply is not supplied to the work execution unit even if the second start signal is input to the safety control circuit 8 (details will be described later).
  • the restart control unit 65 determines whether or not power is being supplied to the work execution unit by acquiring the state of the main contact 88 based on the state of the auxiliary contact 89. Further, the restart control unit 65 outputs an operation preparation signal indicating that the initial processing related to the work execution unit is normally completed and the operation preparation is completed to the safety control circuit 8. In other words, the restart control unit 65 closes the operation preparation contact 83 and conducts the operation preparation input circuit 82 when the initial processing related to the work execution unit is normally completed.
  • FIG. 3 shows a normal operation for ensuring safety.
  • FIG. 4 shows a case where the restart for ensuring safety is performed, and the operation is the same as that of FIG. 3 before the time t4.
  • the upper graph of FIGS. 3 and 4 shows the operation command input from the restart control unit 65 to the command input terminal 85, and the middle graph shows the operation preparation signal (state of the operation preparation contact 83), and the lower graph shows.
  • the graph of is shown the state of the main contact 88 and the auxiliary contact 89 of the safety output relay 87.
  • the time axis t in FIGS. 3 and 4 is scaled out (not necessarily equidistant scales).
  • the control device 6 Before the time t1 in FIG. 3, the control device 6 has received the command to start the operation of the operator.
  • the restart control unit 65 inputs an operation command to the command input terminal 85.
  • an operation command is a signal that continues at a high level.
  • the main body circuit 84 confirms that the high level has continued for a minute time ⁇ T after the operation command has been raised, and recognizes it as the start signal SS.
  • the main body circuit 84 confirms that the operation command is still input (high level) after a minute time ⁇ T has elapsed from the rise of the operation command, and recognizes it as the start signal SS.
  • the main circuit 84 starts the start process after recognizing the start signal SS.
  • the main body circuit 84 can accurately recognize the start signal SS even if the rise of the operation command is unstable.
  • the main body circuit 84 does not erroneously recognize the intrusion of pulsed noise having a short duration as the start signal SS. Therefore, the main body circuit 84 has high reliability in recognizing the start signal SS, and does not accidentally start the start process.
  • the restart control unit 65 outputs an operation preparation signal for the second predetermined time T2 to close the operation preparation contact 83.
  • the continuity state of the operation preparation input circuit 82 is continued until the time t3 after the second predetermined time T2 has elapsed.
  • the first predetermined time T1, the second predetermined time T2, and the third predetermined time T3 described later are timed and controlled by the restart control unit 65, and the time specified in the logic sequence of the main circuit 84. It is set appropriately based on the length of the circuit and the transient characteristics that depend on the circuit configuration.
  • the main body circuit 84 confirms whether or not the safety input circuit 81 and the operation preparation input circuit 82 are in a conductive state. Normally, both the safety input circuit 81 and the operation preparation input circuit 82 are in a conductive state. In this case, the main body circuit 84 starts exciting the safety output relay 87 at a time t4 after the time t3, and maintains the excited state thereafter. Therefore, at approximately time t4, the main contact 88 transitions from the cutoff state to the conduction state, and power is supplied from the power supply device 12 to the work execution unit.
  • the restart control unit 65 confirms the state of the auxiliary contact 89. Normally, the auxiliary contact 89 is in a conductive state. As a result, the restart control unit 65 can confirm that the start process has been completed normally.
  • the main circuit 84 ends the start processing at the time t4, and shifts to the safety monitoring processing during operation.
  • the main body circuit 84 continues to excite the safety output relay 87 while the and condition that the operation command is input and the safety input circuit 81 is in the conduction state is satisfied. Further, when the and condition is not satisfied, the main body circuit 84 cuts off the excitation of the safety output relay 87 and stops the power supply to the work execution unit.
  • the operation preparation input circuit 82 is not used in the safety monitoring process.
  • the time t5 is the time when a predetermined time (the sum of the first predetermined time T1, the second predetermined time T2, and the third predetermined time T3) has elapsed since the first start signal SS was input to the safety control circuit 8. Equivalent to. In this defect, it is presumed that the safety output relay 87 is not excited at time t4 and the power supply is not supplied to the work execution unit. The following 1) to 4) can be considered as the cause of this problem.
  • Non-conducting state of the safety input circuit 81 Specifically, it occurs when the protective cover 11 is open or there is a history of pressing the emergency stop button 75. In order to eliminate this non-conducting state, it is necessary to return the protective cover 11 to the closed state and press the emergency release button to release the pressing history of the emergency stop button 75.
  • Non-conducting state of the operation preparation input circuit 82 Specifically, it occurs when the restart control unit 65 does not output the operation preparation signal. In order to eliminate this non-conducting state, it is necessary to normally end the initial processing related to the work execution unit and output the operation preparation signal to the restart control unit 65.
  • Temporary malfunction of the safety control circuit 8 due to the influence of disturbance The disturbance may be transient electrical noise invading from outside the machine or destabilization of the contact state due to accidental vibration. The frequency of occurrence is higher than that of the following 4). By restarting the safety control circuit 8, there is a great possibility that the temporary malfunction can be resolved.
  • Failure of the safety control circuit 8 Specifically, it is a failure of the main body circuit 84, the safety output relay 87, contacts, etc., and occurs very rarely. Automatic repair is almost difficult. If the safety control circuit 8 is repeatedly restarted unnecessarily, the failure damage may increase or the failure range may increase.
  • the cause is that the restart control unit 65 does not output the operation preparation signal by itself, so the restart control is not performed. Instead, the restart control unit 65 displays on the display unit 62 that the initial processing related to the work execution unit has not been completed normally, and requests the operator to take action.
  • the restart control unit 65 controls the restart without specifying the cause. More specifically, at the time t6 after the time t5 in FIG. 4, the restart control unit 65 temporarily cancels the operation command (falls down to the low level). Then, at the time t11 after the time t6, the restart control unit 65 re-inputs the operation command to the command input terminal 85. This input process corresponds to the process of inputting the second start signal SS to the safety control circuit 8.
  • the main body circuit 84 recognizes the second rise as the start signal SS in the same manner as the first rise of the operation command, and starts the restart process.
  • the restart processing content performed between the time t11 and the time t15 in FIG. 4 is the same as the processing content of the start processing from the time t1 to the time t5.
  • the safety output relay 87 is excited at time t14 in FIG. 4, and the continuity state of the auxiliary contact 89 is often confirmed at time t15. In this case, since the component mounting machine 1 can start operation, the delay in starting operation is suppressed. In addition, there is no need for the operator to restart.
  • the restart control unit 65 displays an error stop warning on the display unit 62 and waits for the operator to take action.
  • an error stop warning may be notified by a means or method other than the display unit 62, for example, transmission to a mobile terminal carried by the operator.
  • the operator who confirmed the warning investigates whether the safety of the component mounting machine 1 is ensured and takes measures. Specifically, the operator confirms the closed state of the protective cover 11 and presses the emergency release button just in case. If the cause of the problem is 1) above, the safety control circuit 8 can normally end the start processing according to the subsequent command to start the operation of the operator.
  • the restart control unit 65 does not restart a plurality of times. That is, the safety control circuit 8 does not repeat the restart process regardless of whether or not it is out of order. Therefore, even if the safety control circuit 8 is out of order, there is no possibility that the failure damage will be large or the failure range will be expanded.
  • the work execution unit (board transfer device 2, component supply device 3, component) is transmitted from the power supply device 12.
  • the restart control unit 65 inputs the second start signal SS to the safety control circuit 8 to restart. Therefore, the safety control circuit 8 can be automatically restarted. Then, in many cases of restart due to the influence of the disturbance, the safety control circuit 8 operates well, the power supply is supplied to the work execution unit, and the component mounting machine 1 starts operating normally. As a result, the delay in starting the operation of the component mounting machine 1 is suppressed, and in addition, the trouble of restarting by the operator becomes unnecessary.
  • the comprehensive input circuit 9 is input to the main body circuit 84A instead of the safety input circuit 81 and the operation preparation input circuit 82, and the other configurations are not modified.
  • the comprehensive input circuit 9 includes an output contact 72 of the cover switch 71, an output contact 76 of the emergency stop button 75, an operation preparation contact 83, and a changeover switch 91.
  • the main body circuit 84A has a first input terminal 841, a second input terminal 842, and a third input terminal 843.
  • the changeover switch 91 has a main terminal 92, a start terminal 93, and an operation terminal 94.
  • An output contact 72 and an output contact 76 are connected in series between the first input terminal 841 and the main terminal 92.
  • the second input terminal 842 is connected to the operating terminal 94.
  • An operation preparation contact 83 is connected between the third input terminal 843 and the starting terminal 93.
  • the changeover switch 91 is controlled from the main body circuit 84A.
  • the changeover switch 91 connects the main terminal 92 and the start terminal 93 in the initial state of the start process (connection of the solid line in FIG. 5), and connects the main terminal 92 and the operation terminal 94 in the safety monitoring process during operation (the connection of the solid line in FIG. 5). Connection of broken lines in FIG. 5).
  • the same operation as that of the embodiment shown in FIGS. 3 and 4 is performed. That is, when the main body circuit 84A recognizes the start signal SS, the start process is started (time t1), and it is confirmed whether or not there is a conduction state between the first input terminal 841 and the third input terminal 843 (time t2). ⁇ Time t3). If it is in a conducting state, the main body circuit 84A starts exciting the safety output relay 87 (time t4).
  • the main body circuit 84A connects the main terminal 92 of the changeover switch 91 and the operating terminal 94.
  • the main body circuit 84A shifts from the start processing to the safety monitoring processing during operation, and monitors the continuity state between the first input terminal 841 and the second input terminal 842 (after time t4). Then, when the space between the first input terminal 841 and the second input terminal 842 is cut off, the main body circuit 84A cuts off the excitation of the safety output relay 87 and stops the power supply to the work execution unit.
  • the restart control unit 65 controls the restart without specifying the cause (time t6 or later).
  • the restart process is started with the main terminal 92 of the changeover switch 91 and the start-up terminal 93 connected to each other.
  • the safety control circuit 8 can be automatically restarted. Therefore, as in the embodiment, the delay in starting the operation of the component mounting machine 1 is suppressed, and in addition, the trouble of restarting by the operator becomes unnecessary.
  • the start signal SS may be a signal having a form other than the rise of the operation command, for example, a rectangular wave signal having a predetermined time width. Further, the operation preparation input circuit 82 and the operation preparation contact 83 can be omitted. Further, the method of recognizing the start signal SS by confirming the continuation of the high level of the minute time ⁇ T at the rise of the operation command can be applied to the state confirmation of the operation preparation contact 83 and the auxiliary contact 89. This improves the noise resistance and reliability of status confirmation. Further, the initial start control unit for inputting the initial start signal SS to the safety control circuit 8 may be provided separately from the restart control unit 65.
  • the restart control unit 65 may determine whether or not the power supply is supplied to the work execution unit based on the information other than the auxiliary contact 89.
  • a charge detection sensor for detecting the charge state may be provided on the load side of the main contact 88 of the power supply line 13, and the detection signal may be input to the restart control unit 65.
  • the configuration for ensuring the safety of the embodiment and the modified example is applied to other types of anti-board work machines having different work implementation units (board transfer device 2, parts supply device 3, parts transfer device 4, and parts camera 5). Can be applied.
  • the embodiments and modifications can be applied and modified in various other ways.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Supply And Installment Of Electrical Components (AREA)
PCT/JP2020/032869 2020-08-31 2020-08-31 対基板作業機 WO2022044320A1 (ja)

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JP2022545252A JP7441319B2 (ja) 2020-08-31 2020-08-31 対基板作業機
PCT/JP2020/032869 WO2022044320A1 (ja) 2020-08-31 2020-08-31 対基板作業機

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Citations (5)

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JPS61201104U (enrdf_load_stackoverflow) * 1985-06-04 1986-12-17
JPH04245309A (ja) * 1991-01-30 1992-09-01 Toshiba Corp 制御用ディジタルコントローラ
JP2000235405A (ja) * 1999-02-15 2000-08-29 Nissin High Voltage Co Ltd プログラマブルコントローラのラッチアップ自動解除装置
JP2003133800A (ja) * 2001-10-22 2003-05-09 Juki Corp 電子部品実装装置
JP2010080939A (ja) * 2008-08-29 2010-04-08 Juki Corp 電子部品実装装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61201104U (enrdf_load_stackoverflow) * 1985-06-04 1986-12-17
JPH04245309A (ja) * 1991-01-30 1992-09-01 Toshiba Corp 制御用ディジタルコントローラ
JP2000235405A (ja) * 1999-02-15 2000-08-29 Nissin High Voltage Co Ltd プログラマブルコントローラのラッチアップ自動解除装置
JP2003133800A (ja) * 2001-10-22 2003-05-09 Juki Corp 電子部品実装装置
JP2010080939A (ja) * 2008-08-29 2010-04-08 Juki Corp 電子部品実装装置

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