WO2022130594A1

WO2022130594A1 - Management system

Info

Publication number: WO2022130594A1
Application number: PCT/JP2020/047283
Authority: WO
Inventors: 和也松山; 光孝畔▲柳▼; 力谷澤; 真吾青木
Original assignee: 株式会社Fuji
Priority date: 2020-12-17
Filing date: 2020-12-17
Publication date: 2022-06-23
Also published as: JP7385062B2; JPWO2022130594A1

Abstract

A management system for determining the connection status of a connector, the connection and disconnection of which switches according to the attachment/detachment to a set base of a feeder which can be set on an electronic component mounting device. The connector in this management system has a power terminal for connecting a first power line provided to the set base side and a second power line provided to the feeder. This management system is equipped with: a first voltage detection unit for detecting a first voltage in the first power line; a second voltage detection unit for detecting a second voltage in the second power line; a power terminal measurement unit for measuring the connector contact resistance or voltage drop in a power terminal on the basis of the first voltage or the second voltage; and a power terminal approval/rejection determination unit for determining whether or not the connector contact resistance or the voltage drop in the terminal falls within an acceptable range.

Description

Management system

This specification relates to a management system.

Conventionally, a feeder that can be set in an electronic component mounting machine is known (see, for example, Patent Document 1). A feeder is a device that conveys parts to be mounted on a board. The feeder can be set in an inspection unit that inspects the performance of the feeder, in addition to the board working machine. The feeder and the set table of the anti-board working machine and the inspection unit on which the feeder can be set each have a connector portion that switches between connected and non-connected according to the attachment and detachment of the feeder. When the connector portions are connected to each other, the feeder is operated by supplying electric power from the board working machine side or the inspection unit side.

JP-A-2018-014364

As described above, the feeder is detachably set on the set table, so if the feeder is frequently attached to or detached from the set table, the connector between the feeder and the set table (especially the connector part of the feeder) will be removed. It can wear and increase the contact resistance at the connector. When the contact resistance at the connector becomes high, the current supplied from the set stand side to the feeder does not reach the specified current, the motor mounted on the feeder malfunctions, and communication failure between the feeder and the set stand side occurs. May occur.

However, in the system of Patent Document 1 above, the contact resistance at the connector between the feeder and the set base is not measured. Therefore, when the connector contact resistance is high, the operator does not know the high resistance state, and the malfunction in the feeder and the communication failure between the feeder and the set stand side are not recognized in advance. There is a possibility that malfunction or communication failure may occur without the operator's knowledge.

It is an object of the present specification to provide a management system capable of determining that the contact resistance at the connector between the feeder and the set base is high and ensuring stable operation of the feeder. And.

This specification is a management system for determining the connection status of a connector that switches between connection and non-connection when a feeder that can be set in an electronic component mounting machine is attached to and detached from the set table, and the connector is the above-mentioned. The management system has a power terminal for connecting a first power line provided on the set stand side and a second power line provided on the feeder, and the management system detects the first voltage of the first power line. One voltage detector, a second voltage detector that detects the second voltage of the second power line, and a voltage drop or connector contact resistance at the power terminal based on the first voltage and the second voltage. Disclosed is a management system including a power terminal measuring unit for determining whether or not a voltage drop or a connector contact resistance at the power terminal is within an allowable range, and a power terminal permit / reject determining unit for determining whether or not the voltage drop or the connector contact resistance is within an allowable range.

According to the present disclosure, it is possible to measure the voltage drop or the connector contact resistance at the power terminal of the connector and determine that the voltage drop or the connector contact resistance exceeds the allowable range. When the voltage drop is large, the connector contact resistance also increases proportionally. If it is found that the voltage drop or contact resistance of the connector when the feeder is set on the set table exceeds the allowable range, take measures corresponding to the feeder to ensure stable operation of the feeder. Can be done.

Further, the present specification is a management system for determining the connection status of a connector that switches between connected and non-connected when a feeder that can be set in an electronic component mounting machine is attached to and detached from the set table. The management system has a signal terminal for connecting a first signal line provided on the set stand side and a second signal line provided on the feeder, and the management system is connected to the first signal line via the signal terminal. A signal terminal measuring unit that measures the connector contact resistance at the signal terminal by supplying a current to the second signal line, and a signal that determines whether or not the connector contact resistance at the signal terminal is within an allowable range. A management system including a terminal permission / rejection determination unit is disclosed.

According to the present disclosure, it is possible to measure the connector contact resistance at the signal terminal of the connector and determine that the connector contact resistance exceeds the allowable range. If it is found that the contact resistance of the connector when the feeder is set on the set table exceeds the allowable range, stable operation of the feeder can be ensured by taking measures corresponding to the feeder.

It is a top view which showed the structure of the substrate production system to which the management system which concerns on one Embodiment is applied. It is a perspective view which showed the structure of the board-to-board work machine (specifically, the electronic component mounting machine) provided in the board production system shown in FIG. 1. It is a figure for demonstrating the exchange work of the feeder between the transfer device of the board-to-board work machine and the electronic component mounting machine in the board production system shown in FIG. It is a block configuration diagram for judging the connection state in the power terminal of the connector between a feeder and a set stand of an electronic component mounting machine in a management system. It is a block configuration diagram for judging the connection state in the signal terminal of the connector between a feeder and a set stand of an electronic component mounting machine in a management system. It is a flowchart of an example of a control routine executed in order to judge the connection state in the power terminal of a connector in a management system. It is a flowchart of an example of a control routine executed in order to judge the connection state in the signal terminal of a connector in a management system. It is a figure for demonstrating the flow of a signal through a signal terminal of a connector in a normal operation mode. It is a figure for demonstrating the flow of a signal through a signal terminal of a connector in a contact resistance measurement mode. It is a figure for demonstrating the procedure for determining the connection state of each of a plurality of signal terminals in a contact resistance measurement mode.

1. 1. Configuration of Substrate Production System The substrate production system 1 of the present embodiment is a system for producing a substrate 2 on which electronic components are mounted. The board production system 1 is managed by the management system 70.

As shown in FIG. 1, the board production system 1 includes a feeder 10, an electronic component mounting machine 20, a storage device 30, a replacement system 40, a transfer device 50, and a line management device 60. The feeder 10, the electronic component mounting machine 20, the storage device 30, the exchange system 40, and the transfer device 50 form a board production line for producing the board 2. The board production system 1 includes not only the electronic component mounting machine 20 but also a solder printing machine, a solder inspection machine, a reflow furnace, an appearance inspection machine, and the like as a board work machine for performing work on the board 2. good.

The feeder 10 is a device that supplies electronic components mounted on the substrate 2 to a predetermined transfer position. As shown in FIG. 2, the feeder 10 can rotatably hold a reel 11 for winding a carrier tape for accommodating electronic components in accommodating holes provided at predetermined intervals in the longitudinal direction. The feeder 10 feeds and moves the carrier tape to supply the electronic components accommodated in the accommodating holes to the predetermined transfer positions.

The feeder 10 is, for example, a cassette type feeder. The feeder 10 has a feeder main body 12 and a drive device 13. The feeder body 12 is formed in a flat box shape. The feeder body 12 holds the reel 11 detachably. The drive device 13 has a sprocket 13a that engages with a feed hole provided in the carrier tape, and a motor (not shown) that rotates the sprocket 13a. The drive device 13 feeds and moves the carrier tape by rotating the sprocket 13a by a motor.

The electronic component mounting machine 20 is a component mounting machine that mounts electronic components on the substrate 2. The electronic component mounting machine 20 mounts a plurality of electronic components on the substrate 2. Although only one electronic component mounting machine 20 may be provided in the board production system 1, a plurality of electronic component mounting machines 20 may be provided as shown in FIG. When a plurality of electronic component mounting machines 20 are provided, the plurality of electronic component mounting machines 20 are sequentially installed along the substrate production line (that is, the transport direction X of the substrate 2). The board-to-board work by the electronic component mounting machine 20 includes carry-in and carry-out work of the board 2, supply work of electronic parts, collection work, mounting work, and the like.

The electronic component mounting machine 20 is a concept including a component mounting machine for mounting electronic components on the board 2 and a component inserting machine for inserting leads into the board 2.

The electronic component mounting machine 20 includes a board transfer device 21, a component supply device 22, and a component transfer device 23.

The board transfer device 21 is a device that conveys the substrate 2 along the transfer direction X. The substrate transfer device 21 includes, for example, a belt conveyor on which the substrate 2 is placed, a positioning device for positioning the substrate 2 at a predetermined position in the machine, and the like. The board transfer device 21 transports the board 2 carried into the machine to a predetermined position, and carries out the board 2 to the outside of the machine after the processing of mounting the electronic components on the board 2 positioned at the predetermined position is completed.

The component supply device 22 is a device that supplies electronic components mounted on the substrate 2 by using the feeder 10 described above. The component supply device 22 has

slots

22a and 22b in which the feeder 10 is detachably set. The

slots

22a and 22b are formed in the pallet member 22c which is a set base. A plurality of slots 22a are arranged side by side along the transport direction X on the upper part of the electronic component mounting machine 20. Further, a plurality of slots 22b are arranged side by side along the transport direction X in the lower part of the electronic component mounting machine 20. The component supply device 22 supplies electronic components to a predetermined position in each feeder 10 set in each of the plurality of slots 22a. The slot 22a holds the feeder 10 used in the production of the substrate 2. Further, the slot 22b holds the feeder 10 to be used in the production of the substrate 2.

The component transfer device 23 is a device for transferring electronic components supplied to a predetermined transfer position onto a substrate 2 positioned at a predetermined position. The component transfer device 23 has a moving table 23a that can be moved in the horizontal direction by a linear motion mechanism, and a mounting head 23b that is detachably fixed to the moving table 23a by a clamping member.

The mounting head 23b holds a holding member capable of holding electronic components. The holding member is, for example, a suction nozzle that sucks an electronic component by negative pressure air, a chuck member that grips the electronic component, or the like. The mounting head 23b and the holding member can be appropriately changed according to the type, size, shape, and the like of the target electronic component. The mounting head 23b can be moved in the horizontal direction integrally with the moving table 23a, and can move the holding member up and down in the vertical direction Z, and further rotate the holding member around the axis in the vertical direction Z. Is possible. The mounting head 23b uses a holding member to hold the electronic component supplied to the component transfer position, then moves the electronic component to the substrate 2 positioned at a predetermined position, and then holds the component. Is released, and the electronic component is mounted on the substrate 2.

The storage device 30 is, for example, a device for storing the feeder 10. The storage device 30 has a slot 31 in which the feeder 10 is detachably set. The storage device 30 may include not only the feeder 10 but also devices such as a mounting head 23b and a holding member thereof used in a board-to-board working machine such as an electronic component mounting machine 20 as a storage target.

The exchange system 40 and the transfer device 50 are devices that perform supply work, replacement work, and recovery work of the feeder 10. The exchange system 40 has two

rails

41, 42 forming a runway. The

rails

41 and 42 extend along the transport direction X of the substrate 2, respectively. The rail 41 is provided at a height position between the slot 22a and the slot 22b. The rail 42 is provided at a height position below the slot 22b.

The transport device 50 is a device that travels on a transport path with

rails

41 and 42. The transport device 50 travels by receiving power supply via a power transmission unit and a power reception unit provided on the

rails

41 and 42. The transport device 50 replaces the feeder 10 with the electronic component mounting machine 20. Further, the transport device 50 exchanges the feeder 10 with the storage device 30. The transfer device 50 may include not only the feeder 10 but also devices such as a mounting head 23b and a holding member thereof used in a board-to-board working machine such as an electronic component mounting machine 20 as a transfer target. Further, the transport device 50 can collect the devices that are no longer needed in the production of the substrate 2 in the storage device 30.

The line management device 60 is a device that monitors the operating status of the board production line of the board production system 1 and comprehensively controls the feeder 10, the electronic component mounting machine 20, the storage device 30, the replacement system 40, and the transfer device 50. The line management device 60 is mainly composed of a computer provided with a CPU, ROM, RAM, and the like.

The line management device 60 can exchange data with each

device

10, 20, 30, 40, 50 via a network. The line management device 60 stores various data for controlling each

device

10, 20, 30, 40, 50. The line management device 60 sends, for example, various data such as a production program for causing the electronic component mounting machine 20 to execute an electronic component mounting process.

2. 2. Management system configuration The management system 70 is a system that manages the board production system 1. The management system 70 includes the line management device 60 described above. The feeder 10 is detachably set in the

slots

22a and 22b of the component supply device 22 of the electronic component mounting machine 20. As shown in FIG. 3, a connector 90 is provided between the pallet member 22c in which the

slots

22a and 22b are formed and the feeder 10. The management system 70 can determine the connection status of the connector 90, which switches between connected and non-connected when the feeder 10 is attached to and detached from the pallet member 22c.

The connector 90 has a power terminal and a signal terminal corresponding to each of the pallet member 22c and the feeder 10. The connector 90 is a member that switches between connection and non-connection between terminals according to attachment / detachment of the feeder 10 to / from the pallet member 22c.

As shown in FIG. 4, the power terminal of the connector 90 connects the first power line 25 provided on the pallet member 22c side (that is, the electronic component mounting machine 20) and the second power line 15 provided on the feeder 10. It is a terminal to make. The first power line 25 includes a negative electrode line 25− and a positive electrode line 25+. The second power line 15 includes a negative electrode line 15− and a positive electrode line 15+.

As shown in FIG. 5, the signal terminals of the connector 90 are a signal terminal for connecting the first signal line 26 provided on the pallet member 22c side and the second signal line 16 provided on the feeder 10, and the pallet member 22c side. Includes a common terminal for connecting the first common line 27 provided in the feeder 10 and the second common line 17 provided in the feeder 10. A plurality of first signal lines 26 and a plurality of second signal lines 16 are provided, and the same plurality of signal terminals are provided accordingly. Hereinafter, it is assumed that the first signal line 26, the second signal line 16, and the signal terminal are provided by "4" each. The first common line 27 and the second common line 17 are provided one by one.

The feeder 10 has a protrusion 10a. The pallet member 22c has a recessed portion 22d. The protrusion 10a and the recess 22d are formed in a shape that allows them to be fitted to each other. When the feeder 10 is set on the pallet member 22c, the protrusion 10a of the feeder 10 fits into the recessed portion 22d of the pallet member 22c, so that the terminals on the feeder 10 side and the pallet member 22c side of the connector 90 are connected to each other. Will be done. On the other hand, when the feeder 10 is removed from the pallet member 22c, the fitting between the protrusion 10a and the recess 22d is released, so that the terminals of the connector 90 are not connected to each other. The feeder 10 is supplied with power from the electronic component mounting machine 20 side while the terminals of the connector 90 are connected to each other, and can communicate with the electronic component mounting machine 20 side and the line management device 60.

The management system 70 includes a first voltage detection unit 71, a second voltage measurement unit 72, a second voltage detection unit 73, a voltage drop measurement unit 74, a current measurement unit 75, a contact resistance measurement unit 76, and a power supply. It has a terminal permission / rejection determination unit 77 and a treatment control unit 78. The first voltage detection unit 71, the second voltage detection unit 73, the voltage drop measurement unit 74, the current measurement unit 75, the contact resistance measurement unit 76, the power terminal permission / rejection determination unit 77, and the treatment control unit 78 are on the pallet member 22c side ( Specifically, it is provided in the line management device 60). On the other hand, the second voltage measuring unit 72 is provided in the feeder 10.

The first voltage detection unit 71 is connected to the negative electrode line 25-of the first power line 25 and is also connected to the positive electrode line 25+ of the first power line 25. The first voltage detection unit 71 is a portion that detects the voltage between the negative electrode line 25− and the positive electrode line 25+ (hereinafter, referred to as the first voltage V1).

The second voltage measuring unit 72 is connected to the negative electrode line 15- of the second power line 15 and also to the positive electrode line 15+ of the second power line 15. The second voltage measuring unit 72 is a portion for measuring the voltage between the negative electrode line 15− and the positive electrode line 15+ (hereinafter, referred to as the second voltage V2). The second voltage V2 measured by the second voltage measuring unit 72 is sent from the feeder 10 to the pallet member 22c side by a communication command. The communication command between the feeder 10 and the pallet member 22c side may be transmitted / received using the first signal line 26 on the pallet member 22c side and the second signal line 16 on the feeder 10 side.

The line management device 60 can receive a communication command indicating the measured value of the second voltage V2 sent from the second voltage measuring unit 72. The second voltage detecting unit 73 detects the second voltage V2 between the negative electrode line 15− and the positive electrode line 15+ of the second power line 15 based on the second voltage V2 from the second voltage measuring unit 72.

The voltage drop measuring unit 74 has a first voltage V1 on the first power line 25 side detected by the first voltage detection unit 71 and a second voltage V2 on the second power line 15 side detected by the second voltage detection unit 73. Based on the above, it is a part for measuring the voltage drop which is the voltage difference (V2-V1).

The current measuring unit 75 is a portion that measures the current flowing through the first power line 25 (specifically, the positive electrode line 25+). The current measuring unit 75 measures the current, for example, based on the voltage difference generated across the resistor having a predetermined resistance value.

The contact resistance measuring unit 76 is a portion for measuring the resistance at the power terminal of the connector 90 (that is, the connector contact resistance). The contact resistance measuring unit 76 is a connector based on the voltage drop from the first power line 25 side to the second power line 15 side measured by the voltage drop measuring unit 74 and the current measured by the current measuring unit 75. Measure the contact resistance.

The power terminal permission / rejection determination unit 77 is a portion that determines whether or not the connector contact resistance measured by the contact resistance measurement unit 76 is within the allowable range. The permissible range of the connector contact resistance is a range in which the treatment control unit 78 does not need to take any action as the connector contact resistance, and is set in a range from the permissible lower limit value to the permissible upper limit value. The allowable lower limit value is, for example, "0". Further, the allowable upper limit value is determined in advance based on the experimental results and the like. The permissible range is not limited to one, and may be set stepwise according to a plurality of treatment contents.

The treatment control unit 78 is a portion that executes a predetermined treatment based on the result determined by the power terminal permission / rejection determination unit 77. Specifically, the treatment control unit 78 does not perform any treatment when it is determined that the connector contact resistance is within the allowable range. In this case, the line management device 60 sends data to the feeder 10 set in the pallet member 22c to execute, for example, a component mounting process as usual.

On the other hand, if it is determined that the connector contact resistance is not within the allowable range, the treatment control unit 78 executes a predetermined treatment. In this predetermined treatment, due to the high contact resistance at the connector 90, sufficient current cannot flow from the pallet member 22c side to the feeder 10, and the motor in the feeder 10 malfunctions or the feeder This is to deal with the possibility of communication failure between the 10 and the pallet member 22c side.

Specifically, the predetermined measures described above include, for example, a display device (not shown) or an audio output device (not shown) provided in the line management device 60 or a host computer connected to the line management device 60 (shown in the figure). It is to give an error notification to notify the operator of the error of the feeder 10 by using (1) or the like, or to give a maintenance notification to urge the operator to maintain the feeder 10. Alternatively, the predetermined procedure is, for example, using the exchange system 40 and the transfer device 50, and the feeder 10 set in the pallet member 22c is stored in the storage device 30 or the like without the work of the operator. An exchange process for automatically replacing the feeder 10 or an insertion / removal process for inserting and removing the feeder 10 set in the pallet member 22c, which is determined to have high connector contact resistance, with respect to the pallet member 22c again. Is to do.

The feeder 10 has a control device 19 that drives and controls the drive device 13. The control device 19 drives and controls the drive device 13 by communicating with the pallet member 22c side (and by extension, the line management device 60). The control device 19 includes a three-state buffer 19a and a microcomputer 19b.

The second signal line 16 is connected to the input terminal of the three-state buffer 19a. The microcomputer 19b side is connected to the output terminal of the three-state buffer 19a. A microcomputer 19b is connected to the control terminal of the three-state buffer 19a. The three-state buffer 19a is in a “1” (H level) state, a “0” (L level) state, and a high impedance state according to the input from the second signal line 16 and the control signal from the microcomputer 19b. Achieves three types of output states. The microcomputer 19b can receive a communication command sent from the pallet member 22c side, and can control the three-state buffer 19a and the analog switch described later according to the received communication command.

The management system 70 also has a switch unit 81, a contact resistance measuring unit 82, a signal terminal permission / rejection determination unit 83, and a treatment control unit 84. The switch portion 81 is provided on the feeder 10. The contact resistance measuring unit 82, the signal terminal permission / rejection determination unit 83, and the treatment control unit 84 are provided on the pallet member 22c side (specifically, the line management device 60).

The switch unit 81 is an analog switch that is interposed between the second signal line 16 and the second common line 17 of the feeder 10 and is connected to both

lines

16 and 17. The switch unit 81 conducts or cuts off the second signal line 16 and the second common line 17. The switch unit 81 switches between continuity and cutoff by a command from the microcomputer 19b according to a communication command from the pallet member 22c side.

The contact resistance measuring unit 82 is a portion for measuring the resistance at the signal terminal of the connector 90 (that is, the connector contact resistance). The contact resistance measuring unit 82 is a contact resistance measuring mode in which the second signal line 16 and the second common line 17 of the feeder 10 are conducted via the switch unit 81, and the first signal line 26 and the first common line 27 Measure connector contact resistance based on the resistance between.

The signal terminal permission / rejection determination unit 83 is a portion for determining whether or not the connector contact resistance measured by the contact resistance measurement unit 82 is within the allowable range. The permissible range of the connector contact resistance is a range in which no treatment is required by the treatment control unit 84 as the connector contact resistance, and is set in a range from the permissible lower limit value to the permissible upper limit value. The allowable lower limit value is, for example, "0". Further, the allowable upper limit value is determined in advance based on the experimental results and the like. The permissible range is not limited to one, and may be set stepwise according to a plurality of treatment contents.

The treatment control unit 84 is a portion that executes a predetermined treatment based on the result determined by the signal terminal permission / rejection determination unit 83. Specifically, the treatment control unit 84 does not perform any treatment when it is determined that the connector contact resistance is within the allowable range. In this case, the line management device 60 sends data to the feeder 10 set in the pallet member 22c to execute, for example, a component mounting process as usual.

On the other hand, when it is determined that the connector contact resistance is not within the allowable range, the treatment control unit 84 executes a predetermined treatment. In this predetermined measure, due to the high contact resistance at the connector 90, it becomes impossible to supply a sufficient level of signal from the pallet member 22c side to the feeder 10, and the motor in the feeder 10 malfunctions. This is to deal with the possibility of raising or communication failure between the feeder 10 and the pallet member 22c side. This predetermined measure is, for example, performing error notification, maintenance notification, replacement processing, insertion / removal processing, and the like, similar to the treatment by the treatment control unit 78.

3. 3. Operation control of the management system The management system 70 determines the connection status of the connector 90 (specifically, the power terminal). The line management device 60 determines whether or not it is the timing to determine the connection status of the connector 90 (step S100 shown in FIG. 6). This determination timing is, for example, immediately after the feeder 10 is inserted into and set in the pallet member 22c, or immediately after the power of the feeder 10 set in the pallet member 22c is turned on.

When this determination timing is affirmatively determined, first, a high load command is issued from the line management device 60 to the feeder 10 to forcibly drive the motor of the drive device 13. When such a high load command is given, the feeder 10 is put into a high load state (step S110). When the feeder 10 is in a high load state, electric power is supplied from the first electric power line 25 on the pallet member 22c side to the second electric power line 15 on the feeder 10 side.

In a state where power is supplied from the pallet member 22c side to the feeder 10 side, the line management device 60 is connected between the positive electrode line 25+ and the negative electrode line 25-of the first power line 25 by the first voltage detection unit 71. The first voltage V1 is detected (step S120). Further, in that state, the feeder 10 measures the second voltage V2 between the positive electrode line 15+ and the negative electrode line 15− of the second power line 15 by the second voltage measuring unit 72. The second voltage V2 measured by the second voltage measuring unit 72 is sent from the feeder 10 to the pallet member 22c side via the

signal lines

16 and 26 by a communication command. The line management device 60 detects the above-mentioned second voltage V2 by the second voltage detection unit 73 according to the communication command from the feeder 10 (step S121).

Next, the line management device 60 is a voltage difference (V2-V1) between the first voltage V1 by the first voltage detection unit 71 and the second voltage V2 by the second voltage detection unit 73 in the voltage drop measuring unit 74. Along with measuring the voltage drop (step S122), the current measuring unit 75 measures the current flowing through the first power line 25 (step S123). Then, the line management device 60 measures the connector contact resistance at the contact resistance measuring unit 76 based on the voltage drop by the voltage drop measuring unit 74 and the current by the current measuring unit 75 (step S124).

The line management device 60 determines whether or not the connector contact resistance by the contact resistance measuring unit 76 is within the allowable range in the power terminal permission / rejection determination unit 77 (step S130). When it is determined that the connector contact resistance is within the allowable range, the line management device 60 determines that the connector 90 is in a normal state (step S140), and does not execute the action by the action control unit 78.

On the other hand, when it is determined that the connector contact resistance is not within the allowable range, the line management device 60 determines that the connector 90 is in an abnormal state (step S141), and the treatment control unit 78 executes a predetermined treatment. (Step S150). Specifically, the above-mentioned error notification, maintenance notification, replacement processing, and insertion / removal processing are executed. When such a predetermined measure is executed, the operator is notified of the error of the feeder 10 by the display device or the voice output device or is prompted for maintenance, or the feeder 10 is automatically replaced or the pallet member 22c is automatically replaced. It is inserted and removed.

In this way, it is possible to measure the connector contact resistance of the power terminal of the connector 90 and determine that the connector contact resistance is higher than the allowable range. Then, when the contact resistance of the connector is high, the operator is notified or maintained before the trouble caused by the high contact resistance of the connector 90 occurs by the above-mentioned error notification, maintenance notification, replacement process, or the like. Since the prompting, the feeder 10 can be automatically replaced, or the feeder 10 can be inserted and removed from the pallet member 22c, the operation of the feeder 10 set on the pallet member 22c can always be stably ensured.

Further, the management system 70 determines the connection status of the connector 90 (specifically, the signal terminal). The line management device 60 determines whether or not it is time to determine the connection status of the connector 90 (step S200 shown in FIG. 7). The determination timing of the signal terminal may be the same as the determination timing of the connection status of the power terminal. For example, the determination process of the signal terminal is performed in parallel with the determination process of the power terminal or in a time division manner. good.

When the above determination timing is negatively determined, it is not necessary to conduct the second signal line 16 and the second common line 17, and a normal operation mode for maintaining the switch unit 81 in the off state is realized (step S210). ). In this normal operation mode, as shown in FIG. 8, when data is transmitted from the pallet member 22c side to the feeder 10 via the signal terminal of the connector 90, the data is transmitted to the microcomputer 19b side via the three-state buffer 19a. Be done. The feeder 10 performs processing such as supply of electronic components based on this data.

When the above determination timing is affirmatively determined, first, a communication command for turning on the switch unit 81 is sent from the line management device 60 to the feeder 10 (step S220). When such a communication command is received by the feeder 10, the microcomputer 19b turns off the three-state buffer 19a so that the output becomes zero regardless of the input, and the switch unit 81 is turned off from the second signal line 16 and the second common line. Turn on so that 17 and 17 are conductive. In this case, a contact resistance measurement mode for measuring the connector contact resistance is realized (step S230).

In this contact resistance measurement mode, when the switch unit 81 is turned on, as shown in FIG. 9, the second signal line 16 and the second common line 17 corresponding to the switch unit 81 in the feeder 10 conduct with each other. In this case, the first signal line 26 of the line management device 60 → the signal terminal of the connector 90 → the second signal line 16 of the feeder 10 → the switch section 81 → the second common line 17 of the feeder 10 → the common terminal of the connector 90 → the line. A loop is formed via the first common line 27 of the management device 60.

In the state where such a loop is formed, the line management device 60 measures the resistance between the first signal line 26 and the first common line 27 by the contact resistance measuring unit 82 (step S240), and the measured resistance is measured. The connector contact resistance is measured based on (step S241).

The switch unit 81 is turned on, that is, the loop is formed by time division for each signal terminal of the connector 90, as shown in FIG. That is, the plurality of switch units 81 conduct the second signal line 16 to the second common line 17 one by one at intervals. Then, the measurement of the resistance between the first signal line 26 and the first common line 27, and thus the measurement of the connector contact resistance, is performed for each signal terminal of the connector 90.

The line management device 60 determines whether or not the connector contact resistance by the contact resistance measuring unit 82 is within the allowable range in the signal terminal permission / rejection determination unit 83 (step S250). When it is determined that the connector contact resistance in all the loops is within the allowable range, the line management device 60 determines that the connector 90 is in a normal state (step S260), and does not execute the action by the action control unit 84. ..

On the other hand, when it is determined that the connector contact resistance in at least one loop is not within the allowable range, the line management device 60 determines that the connector 90 is in an abnormal state (step S261), and the treatment control unit 84 determines. (Step S270). Specifically, the above-mentioned error notification, maintenance notification, replacement processing, and insertion / removal processing are executed. When such a predetermined measure is executed, the operator is notified of the error of the feeder 10 by the display device or the voice output device or is prompted for maintenance, or the feeder 10 is automatically replaced or the pallet member 22c is automatically replaced. It is inserted and removed.

After the contact resistance measurement mode is executed, the switch unit 81 is turned off so that the second signal line 16 and the second common line 17 are cut off, and the three-state buffer 19a outputs in response to an input. The mode switches from the contact resistance measurement mode to the normal operation mode. When this switching is performed, the feeder 10 performs processing such as supply of electronic components as usual based on the data from the line management device 60.

In this way, it is possible to measure the connector contact resistance of the signal terminal of the connector 90 and determine that the connector contact resistance is higher than the allowable range. Then, when the contact resistance of the connector is high, the operator is notified or maintained before the trouble caused by the high contact resistance of the connector 90 occurs by the above-mentioned error notification, maintenance notification, replacement process, or the like. Since the prompting, the feeder 10 can be automatically replaced, or the feeder 10 can be inserted and removed from the pallet member 22c, the operation of the feeder 10 set on the pallet member 22c can always be stably ensured.

Therefore, the production capacity of the substrate production system 1 can be improved, and the productivity of the substrate 2 can be ensured.

In the above embodiment, the line management system 60 is in the "management system" described in the claims, and the pallet member 22c is in the "set stand" described in the claims, and the contact resistance measuring unit 76 is provided. The contact resistance measuring unit 82 corresponds to the "power terminal measuring unit" described in the claims, and the contact resistance measuring unit 82 corresponds to the "signal terminal measuring unit" described in the claims.

4. By the way, in the above-described embodiment, the first voltage V1 and the feeder 10 of the first power line 25 on the pallet member 22c side are determined by the voltage drop measuring unit 74 in order to determine the connection status of the power terminal of the connector 90. The voltage drop, which is the potential difference between the second power line 15 on the side and the second voltage V2, is measured, the current flowing through the first power line 25 is measured by the current measuring unit 75, and the contact resistance measuring unit 76 measures the current. The connector contact resistance is measured based on the voltage drop and the current, and the power terminal permission / rejection determination unit 77 determines whether or not the connector contact resistance is within the allowable range.

However, the present disclosure is not limited to this, and it is determined whether or not the voltage drop measured by the voltage drop measuring unit 74 is within the allowable range in determining the connection status of the power terminal of the connector 90. It may be determined. The permissible range of this voltage drop is a range in which no treatment is required by the treatment control unit 78 as the voltage drop, and is set in a range from the permissible minimum value to the permissible maximum value. The allowable minimum value is, for example, "0". The maximum allowable value is determined in advance based on experimental results and the like. The permissible range is not limited to one, and may be set stepwise according to a plurality of treatment contents. In this modified form, the voltage drop measuring unit 74 corresponds to the "power terminal measuring unit" described in the claims.

Further, in the above embodiment, a plurality of first signal lines 26 on the pallet member 22c side and a plurality of second signal lines 16 on the feeder 10 side are provided, and the same plurality of signal terminals of the connector 90 are provided. In order to determine the connection status of the signal terminals of the connector 90, the connector contact resistance at each of the signal terminals is measured in order in time division. However, the present disclosure is not limited to this, and it is possible to measure the connector contact resistance at one of all signal terminals, or to allow connector contact resistance at any one of all signal terminals. If it is determined that the signal is not within the range, the subsequent measurement of the connector contact resistance at the signal terminal may be stopped, and then a predetermined measure may be performed. In this modified form, it is possible to shorten the time required for the contact resistance measurement mode.

Further, in the above embodiment, both the connection status of the power terminal of the connector 90 and the connection status of the signal terminal of the connector 90 are determined. However, the present disclosure is not limited to this, and may determine only the connection status of the power terminal of the connector 90, or may determine only the connection status of the signal terminal of the connector 90.

Further, in the above embodiment, the target to which the feeder 10 is set is the pallet member 22c which is a set stand provided in the electronic component mounting machine 20. However, the present disclosure is not limited to this, and the object to which the feeder 10 is set may be a set stand provided in an inspection unit for inspecting the feeder.

It should be noted that the present disclosure is not limited to the above-described embodiments and modifications, and various modifications can be made without departing from the spirit of the present invention.

1: Board production system 2: Board, 10: Feeder, 15: Second power line, 16: Second signal line, 17: Second common line, 20: Electronic component mounting machine, 22c: Pallet member, 25: No. One power line, 26: first signal line, 27: first common line, 60: line management device, 70: management system, 71: first voltage detection unit, 72: second voltage measurement unit, 73: second voltage Detection unit, 74: Voltage drop measurement unit, 75: Current measurement unit, 76: Contact resistance measurement unit, 77: Power terminal permission / rejection determination unit, 78: Treatment control unit, 81: Switch unit, 82: Contact resistance measurement unit, 83 : Signal terminal permission / rejection determination unit, 84: Treatment control unit, 90: Connector.

Claims

It is a management system that judges the connection status of the connector that switches between connected and disconnected when the feeder that can be set in the electronic component mounting machine is attached to and detached from the set stand.
The connector has a power terminal for connecting a first power line provided on the set stand side and a second power line provided on the feeder.
The management system is
The first voltage detection unit that detects the first voltage of the first power line,
A second voltage detection unit that detects the second voltage of the second power line,
A power terminal measuring unit that measures a voltage drop or connector contact resistance at the power terminal based on the first voltage and the second voltage.
A power terminal permission / rejection determination unit that determines whether or not the voltage drop or connector contact resistance at the power terminal is within the allowable range.
A management system.
The first voltage detection unit, the second voltage detection unit, the power terminal measurement unit, and the power terminal permission / rejection determination unit are each provided on the set stand side.
The management according to claim 1, wherein the second voltage detecting unit detects the second voltage based on a communication command sent from the second voltage measuring unit that measures the second voltage provided in the feeder. system.
The connector has a signal terminal for connecting a first signal line provided on the set stand side and a second signal line provided on the feeder.
The management system is
A signal terminal measuring unit that measures the connector contact resistance at the signal terminal by supplying a current from the first signal line to the second signal line via the signal terminal.
A signal terminal permission / rejection determination unit that determines whether or not the connector contact resistance at the signal terminal is within the allowable range, and
The management system according to claim 1 or 2.
It is a management system that judges the connection status of the connector that switches between connected and disconnected when the feeder that can be set in the electronic component mounting machine is attached to and detached from the set stand.
The connector has a signal terminal for connecting a first signal line provided on the set stand side and a second signal line provided on the feeder.
The management system is
A signal terminal measuring unit that measures the connector contact resistance at the signal terminal by supplying a current from the first signal line to the second signal line via the signal terminal.
A signal terminal permission / rejection determination unit that determines whether or not the connector contact resistance at the signal terminal is within the allowable range, and
A management system.
A plurality of the signal terminals are provided in the connector corresponding to the plurality of the first signal line and the second signal line, respectively.
The management system according to claim 3 or 4, wherein the signal terminal measuring unit measures a connector contact resistance at at least one of the plurality of signal terminals.
The management system according to any one of claims 3 to 5, wherein the signal terminal measurement unit and the signal terminal permission / rejection determination unit are provided on the set stand side, respectively.
The connector has a common terminal for connecting a first common line provided on the set stand side and a second common line provided on the feeder.
The management system has a switch unit provided in the feeder and connected between the second signal line and the second common line.
The switch unit shuts off the second signal line and the second common line during the normal operation mode of the feeder, and conducts conduction during the measurement mode of the connector contact resistance at the signal terminal by the signal terminal measuring unit. Let me
The signal terminal measuring unit is located between the first signal line and the first common line when a current is supplied from the first signal line to the second signal line via the signal terminal in the measurement mode. The management system according to claim 6, wherein the connector contact resistance at the signal terminal is measured based on the resistance generated in the signal terminal.
The management system according to claim 7, wherein the switch unit switches between cutoff and continuity according to a communication command supplied from the set stand side on which the feeder is set.
A plurality of the signal terminals are provided in the connector corresponding to the plurality of the first signal line and the second signal line, respectively.
A plurality of the switch portions are provided corresponding to the signal terminals.
The management system according to claim 7 or 8, wherein the plurality of switch units conduct the second signal line to the second common line one by one in a time division manner.
When the determination result is not within the permissible range, the management system notifies the operator of the maintenance of the feeder, the error notification of the error of the feeder to the operator, and the feeder set on the set table. 6. Management system.
The management system according to any one of claims 1 to 10, wherein the set stand is provided in the electronic component mounting machine or the inspection unit for inspecting the feeder.
The management according to any one of claims 1 to 11, wherein the connection status is determined when the feeder is set on the set table or when the feeder is turned on from the set table side. system.