JP7699498B2 - Display system for board-to-board work - Google Patents

Description

The present invention relates to a display system for substrate-related work.

Conventionally, a board production system using a substrate-related operation machine such as an electronic component mounting machine that mounts electronic components on a substrate is known (see, for example, Patent Document 1). In this board production system, the substrate-related operation machine has multiple slots in which devices such as feeders are set. A device is set in each slot so that it can be detached.

In order to allow the worker to know whether the device set in each slot is in a normal or abnormal state, it is possible to provide a device display unit that displays the state of each device corresponding to each slot. This device display unit has an individual display section that is provided individually for each device, i.e., for each slot. The individual display section indicates the state of the device using, for example, three types of LEDs (green, orange, and red), and lights up when instructed by the control device on the substrate-related operation machine body. Therefore, by having the worker visually check each individual display section of the device display unit, the worker can recognize the state of each slot, i.e., each device, such as normal or abnormal.

JP 2020-115514 A

However, if the control device on the substrate-related operation machine body is individually connected to each individual display unit, there is a risk that the signal wiring connecting the control device and the individual display units will be excessive.

The purpose of this specification is to provide a display system for substrate-related work that can properly send display commands from the control device to multiple individual display units without excessive signal wiring between the control device and the individual display units.

This specification provides a method for manufacturing a substrate-related operating machine that includes a plurality of individual display units corresponding to a plurality of slots in which devices are set, each of which displays the status of the device set in each of the slots; two or more display control units that divide the plurality of individual display units into two or more groups and control the display of each of the individual display units; signal wiring that connects the two or more display control units in a daisy chain; a display command unit that issues display commands to the individual display units; and a communication line that connects the display command unit and the display control unit at the head, the display command unit transmitting information including all of the display commands for the plurality of individual display units to the display control unit at the head via the communication line, The above display control units each have a receiving unit that receives information transmitted from the display command unit or the display control unit that is connected to the display control unit on the upstream side, a memory-mapped I/O to which the information received by the receiving unit is input, a display output unit that displays and outputs the individual display unit assigned to the display control unit based on information of an area assigned to the display control unit among the information input to the memory-mapped I/O, and a transmitting unit that transmits the information input to the memory-mapped I/O via the signal wiring to the display control unit connected to the display control unit on the downstream side.

According to the present disclosure, it is possible to appropriately send display commands from the control device to multiple individual display units without excessive signal wiring between the control device and the individual display units.

1 is a configuration diagram of a board production system including a board-related operation display system according to a first embodiment; FIG. 2 is a configuration diagram of a substrate-related performing machine included in the substrate production system. FIG. 1 is a configuration diagram of a display system for substrate-related work. 1 is a diagram showing an example of a device display unit including a plurality of individual display sections provided on a substrate-related operating machine; 4 is a detailed configuration diagram of a display control unit included in the substrate-related operation display system. FIG.

The following describes one embodiment of a display system for substrate-related work.

1. Configuration of a board production system including a display system for work related to boards A board production system 1 according to the present embodiment is a system for producing boards 2 on which electronic components are mounted. As shown in FIG. 1 , the board production system 1 includes a plurality of board-related operation machines 10, a management device 50, and a display system 60 for work related to boards.

The substrate-related operation machine 10 is a device that performs a predetermined operation on the substrate 2 to be produced. There are multiple types of substrate-related operation machines 10. The substrate-related operation machines 10 are, for example, a printer, a print inspection machine, an electronic component mounting machine, a reflow oven, and an appearance inspection machine. The substrate-related operation machines 10 may also include, for example, a functional inspection machine, a buffer device, a substrate supply device, a substrate reversing device, a shield mounting device, an adhesive application device, an ultraviolet irradiation device, and the like, as necessary. As shown in FIG. 1, multiple types (e.g., four types) of substrate-related operation machines 10 constitute a substrate-related operation line arranged in a predetermined order. The substrate 2 is transported by a substrate transport device in the arrangement order of the multiple types of substrate-related operation machines 10.

For example, an electronic component mounting machine 10A, which is one type of substrate-related work machine 10, performs the work of loading, positioning, and unloading the substrate 2, and also performs the work of supplying, picking, and mounting electronic components in conjunction with the work on the substrate 2. The electronic component mounting machine 10A mounts multiple electronic components on the substrate 2 that has been loaded and positioned in a predetermined position, and unloads the substrate 2 on which the electronic components have been mounted.

As shown in FIG. 2, the electronic component mounting machine 10A has a board transport device 11, a component supply device 12, and a component transfer device 13.

The board transport device 11 transports the board 2 and positions the board 2 on the main body of the electronic component mounting machine 10A. The board transport device 11 has a guide rail 11a, a conveyor belt, and a clamping device. The board transport device 11 guides the board 2 in the transport direction X by rotating the conveyor belt on which the board 2 is placed and moving it along the guide rail 11a. Then, when the board 2 is transported to a predetermined component mounting position in the transport direction, the clamping device positions the board 2. The guide rail 11a, conveyor belt, and clamping device of the board transport device 11 can be appropriately replaced depending on the type, size, shape, etc. of the board 2.

The component supply device 12 supplies electronic components to be mounted on the board 2 to the pick-up position L. The component supply device 12 has a slot 12a. The slot 12a is a portion that detachably holds the feeder 20. The feeder 20 is a device that supplies electronic components to the pick-up position L. A plurality of slots 12a are provided so that a plurality of feeders 20 (e.g., 30) can be arranged in the conveying direction X. The number of slots 12a is set to the same number as the maximum number of feeders 20 that can be set.

The slot 12a may be capable of holding each of the multiple feeders 20 in a state where the feeders 20 are housed in a hollow box-shaped storage case. Furthermore, the slot 12a may be configured to hold the feeders 20 in two tiers, one above the other. In this case, for example, the upper tier slot 12a may hold the feeders 20 in an operable manner for each storage case, while the lower tier slot 12a may hold the feeders 20 in a spare manner for use in board production for each storage case, or may temporarily hold the feeders 20 as used feeders used in board production.

Feeder 20 has a holding section that removably holds a carrier tape containing electronic components. The carrier tape has storage sections that are arranged at predetermined intervals in the longitudinal direction and store electronic components, and is wound on a disk-shaped reel. The holding section of feeder 20 holds the reel removably and rotatably. Feeder 20 supplies electronic components in the storage sections to a pick-up position by using a motor to run the carrier tape wound on the reel held by the holding section.

The component transfer device 13 transfers the electronic component supplied to the pick-up position to the board 2 positioned by the board transport device 11. The component transfer device 13 has a mounting head 13a that can be raised and lowered and to which a holding member such as a suction nozzle or a gripping member is attached, and a robot 13b that moves the mounting head 13a in a horizontal direction. The mounting head 13a and the holding member attached to the mounting head 13a are changed as appropriate depending on the type of electronic component to be transferred to the board 2. The component transfer device 13 appropriately combines the mounting head 13a and the robot 13b to pick up the electronic component supplied to the pick-up position L, move it above the positioned board 2, and mount the electronic component at a predetermined mounting position on the board 2.

The management device 50 is a device that manages the production of boards 2 by the board production system 1. When multiple board production systems 1 (i.e., multiple board-related work lines) are installed in a factory, the management device 50 may be configured to comprehensively manage board production by the multiple board production systems 1. The management device 50 stores production plans for multiple types of boards over a predetermined period of time in the future (e.g., one week or one month) and usage plans that indicate the types and numbers of electronic components to be used in accordance with the board production plans. The management device 50 executes board production by the board-related work machine 10 based on the predetermined production plans and usage plans.

The management device 50 is capable of wired or wireless data communication with each substrate-related operation machine 10 in the substrate production system 1. Each substrate-related operation machine 10 has a control device 15. The control device 15 is capable of performing various types of control, including operations on the substrate 2, according to commands from the management device 50.

The display system 60 for substrate-related work is a system that displays the status of the feeders 20 set in each of the multiple slots 12a of the electronic component mounting machine 10A so that the operator can visually check it. The display system 60 for substrate-related work is incorporated in the control device 15 of each electronic component mounting machine 10A. As shown in FIG. 3, the display system 60 for substrate-related work includes an individual display unit 61, a display control unit 62, signal wiring 63, a display command unit 64, and a communication line 65.

The individual display unit 61 is a display that displays the status of the feeder 20 accommodated in the slot 12a. The individual display unit 61 is disposed in a position on the front of the electronic component mounting machine 10A that is easily visible to the operator. A plurality of individual display units 61 are provided in accordance with the number of slots 12a of the corresponding electronic component mounting machine 10A. Each individual display unit 61 displays the status of the corresponding feeder 20. The multiple individual display units 61 corresponding to the multiple slots 12a of the electronic component mounting machine 10A are arranged in line in the conveying direction X in accordance with the arrangement direction and spacing of the slots 12a, as shown in FIG. 4. Note that numbers or the like indicating the slot numbers of the slots 12a may be attached near the individual display units 61.

The status of the feeder 20 displayed by the individual display unit 61 includes, for example, a normal status, an abnormal status, a warning status, and the like. The normal status is a status indicating that the feeder 20 is properly set in the slot 12a and is operable. The abnormal status is a status indicating that the feeder 20 is properly set in the slot 12a but an abnormality such as a component shortage, a component supply failure, a pickup error, an image processing error, or a communication error has occurred, or that the feeder 20 is not properly set in the slot 12a. The warning status is a status indicating that the feeder 20 is properly set in the slot 12a but a warning is issued to the operator during communication between the feeder 20 and this machine, etc.

Each individual display unit 61 has multiple types of light sources (e.g., LEDs) (e.g., three types: green, orange, and red), and can emit light using each light source. The multiple types of light sources for each individual display unit 61 are arranged, for example, in a line in the conveying direction X. Each individual display unit 61 displays the state of the feeder 20 by lighting the LED in a color corresponding to the above-mentioned state. For example, when the feeder 20 is in a normal state, the individual display unit 61 displays the state by lighting the LED in green, and when the feeder 20 is in an abnormal state, the individual display unit 61 displays the state of the feeder 20 by lighting the LED in red. Note that the individual display unit 61 may display the state of the feeder 20 by emitting multiple types of light individually, or may display the state of the feeder 20 by emitting a combination of two or more types of light.

The display control unit 62 is a part that controls the display of the individual display units 61. The display control unit 62 is mainly composed of a microcomputer. The multiple individual display units 61 are divided into two or more groups. Each group includes multiple individual display units 61, and for example, the numbers of the individual display units 61 are distributed evenly among the groups. Two or more display control units 62 are provided corresponding to the number of groups of the individual display units 61. In the following, the multiple (nine in FIG. 4) individual display units 61 are divided into three groups A, B, and C as shown in FIG. 4, and three display control units 62 are provided. The individual display units 61 and the groups of the display control units 62 are denoted by the subscripts a, b, and c.

Each display control unit 62a, 62b, 62c controls the display of the individual display units 61a, 61b, 61c in the corresponding group. The multiple display control units 62a, 62b, 62c are connected in a daisy chain in that order using signal wiring 63. Each display control unit 62a, 62b, 62c has a port to which the signal wiring 63 or communication line 65 is connected. One port is provided on each of the upstream and downstream parts of the display control unit 62. The first signal wiring 63 connects the downstream port of the first display control unit 62a of the three display control units 62a, 62b, 62c to the upstream port of the second display control unit 62b. The second signal wiring 63 connects the downstream port of the second display control unit 62b to the upstream port of the third display control unit 62c.

The display command unit 64 is a part that issues display commands to the individual display units 61a, 61b, and 61c to the display control units 62a, 62b, and 62c. The display command unit 64 is mainly composed of a microcomputer, and is included in the control device 15 that controls the electronic component mounting machine 10A main body. The display command unit 64 detects the state of the feeder 20 set in the slot 12a using various sensors provided in the electronic component mounting machine 10A, etc. Then, the display command unit 64 issues display commands to the display control units 62a, 62b, and 62c to display the individual display units 61 based on the detected state of each feeder 20.

The above display command includes display commands for all types of light sources of all individual display units 61 equipped in the electronic component mounting machine 10A. For example, if 65 individual display units 61 are provided and each individual display unit 61 has three types of light sources, the above display command includes on/off commands for 195 light sources.

Each display control unit 62a, 62b, 62c displays the individual display units 61a, 61b, 61c according to a display command from a display command unit 64. The display command unit 64 is connected to the leading display control unit 62a via a communication line 65. The communication line 65 connects the display command unit 64 to the upstream port of the leading display control unit 62a. The signal wiring 63 and communication line 65 described above each transmit and receive information using a communication standard such as UART (asynchronous communication), which is a serial communication standard.

As shown in FIG. 5, each display control unit 62a, 62b, 62c has a display board 80a, 80b, 80c on which a control chip is mounted. Each display board 80a, 80b, 80c is interposed between the upstream port and the downstream port of the corresponding display control unit 62a, 62b, 62c. The display boards 80a, 80b, 80c are connected in series by signal wiring 63. Each display board 80a, 80b, 80c is formed to have an appropriate shape and size, and the maximum number of individual display units 61 that each display control unit 62 can control is predetermined.

The display boards 80a, 80b, and 80c are constructed using a common board. Each display board 80a, 80b, and 80c can recognize its own display board 80a, 80b, and 80c. This recognition is performed based on switch settings using dip switches or the like for identifying the own display board 80a, 80b, and 80c. Each display board 80a, 80b, and 80c is a circuit board having a receiving circuit 81, an address map 82, a transmitting circuit 83, and an LED output section 84.

The receiving circuit 81 is a receiving unit that receives information transmitted from the display command unit 64 connected upstream to its own display control unit 62 or from another display control unit 62. The address map 82 has a memory-mapped I/O to which the information received by the receiving circuit 81 is input. The memory-mapped I/O has a capacity capable of storing information including all of the display commands of the multiple individual display units 61 equipped in the corresponding electronic component mounting machine 10A. The memory-mapped I/O has areas set corresponding to the individual display units 61a, 61b, and 61c.

Specifically, the address map 82 of the display board 80a has memory-mapped I/Oa, I/Ob, and I/Oc corresponding to all of the individual display units 61a, 61b, and 61c. The address map 82 of the display board 80b has memory-mapped I/Ob and I/Oc corresponding to the two individual display units 61b and 61c. The address map 82 of the display board 80c has memory-mapped I/Oc corresponding to one individual display unit 61c.

The transmission circuit 83 is a transmission unit that transmits information input to the memory-mapped I/O of the address map 82 to another display control unit 62 that is connected downstream to the display control unit 62 of the own. The LED output unit 84 is a display output unit that displays and outputs the individual display unit 61 assigned to the own display control unit 62 based on the information of the area assigned to the own display control unit 62 among the information input to the memory-mapped I/O.

The receiving circuit 81 and the transmitting circuit 83 may be software controlled using an MPU (micro processing unit), but may also be hardware controlled with logic design to reduce costs. In the case of hardware control, each circuit 81, 83 may be constructed using an FPGA (field programmable gate array). With this configuration, the address area can be increased by simply changing the FPGA program without revising the hardware of the display boards 80a, 80b, and 80c, making it possible to easily increase the number of display boards 80 connected.

2. Operation of the display system for work on boards In the display system for work on boards 60, during system operation, the display command unit 64 detects the state of the feeder 20 set in the slot 12a of the electronic component mounting machine 10A, and based on that state, issues display commands to the display control units 62a, 62b, and 62c for the multiple individual display units 61. The display command unit 64 transmits information including all of the display commands for the multiple individual display units 61 to the head display control unit 62a via the communication line 65.

The information transmitted from the display command unit 64 to the head display control unit 62a includes a certain period during which the signal does not change, followed by a start command (SOH), followed by bit information indicating the display commands for all individual display units 61 (for example, on/off commands for the 195 light sources as described above). The bit information is arranged so that the information for individual display unit 61a, individual display unit 61b, and individual display unit 61c is bundled together and transmitted in that order.

The leading display control unit 62a receives information transmitted from the display command unit 64 via the receiving circuit 81 of the display board 80a. When the leading display control unit 62a detects a certain period during which the signal does not change from the display command unit 64 and receives a start command, it stores bit information indicating the subsequent display command in the memory-mapped I/O of the address map 82. The bit information is stored in the memory-mapped I/O in the display control unit 62a in a predetermined order, for example, from the least significant bit of the leading address to the most significant bit. At this time, the bit information of the individual display unit 61a is stored in the memory-mapped I/Oa, the bit information of the individual display unit 61b is stored in the memory-mapped I/Ob, and the bit information of the individual display unit 61c is stored in the memory-mapped I/Oc.

The LED output unit 84 of the first display control unit 62a causes the individual display unit 61a to display and output based on the bit information stored in the memory mapped I/Oa assigned to its own display control unit 62a among the information input to the memory mapped I/O. In this case, the individual display unit 61a in group A lights up the LED in a pattern according to the bit information of the memory mapped I/Oa, and displays and outputs according to the state of the feeder 20.

The transmission circuit 83 of the first display control unit 62a transmits the information input to the memory-mapped I/O to the display control unit 62b connected downstream to the display control unit 62a itself via the signal wiring 63. Specifically, the information transmitted from the display control unit 62a to the display control unit 62b includes bit information of memory-mapped I/Ob, I/Oc assigned to all display control units 62b, 62c present downstream of the display control unit 62a itself among the information input to the memory-mapped I/O after a certain period during which the signal does not change and a start command (SOH) is provided. In addition, this bit information is arranged so that the information of the individual display unit 61b and the information of the individual display unit 61c are bundled and transmitted in that order.

The second display control unit 62b receives information transmitted from the first display control unit 62a at the receiving circuit 81 of the display board 80b. When the second display control unit 62b detects a certain period during which the signal does not change from the first display control unit 62a and receives a start command, it stores bit information indicating the subsequent display command in the memory mapped I/O of the address map 82. The bit information is stored in the memory mapped I/O in the display control unit 62b in a predetermined order, for example, from the least significant bit of the first address to the most significant bit. At this time, the bit information of the individual display unit 61b is stored in the memory mapped I/Ob, and the bit information of the individual display unit 61c is stored in the memory mapped I/Oc.

The LED output unit 84 of the second display control unit 62b causes the individual display unit 61b to display and output based on the bit information stored in the memory mapped I/Ob assigned to its own display control unit 62b among the information input to the memory mapped I/O. In this case, the individual display unit 61b in group B lights up the LED in a pattern according to the bit information of the memory mapped I/Ob to perform display output according to the state of the feeder 20.

The transmission circuit 83 of the second display control unit 62b transmits the information input to the memory-mapped I/O via the signal wiring 63 to the display control unit 62c connected downstream to its own display control unit 62b. Specifically, the information transmitted from the display control unit 62b to the display control unit 62c includes bit information of the memory-mapped I/Oc assigned to all display control units 62c present downstream of its own display control unit 62a after a certain period during which the signal does not change and a start command (SOH) is provided, among the information input to the memory-mapped I/O. In addition, this bit information is arranged so that only the information of the individual display unit 61c is sent together.

The third display control unit 62c receives information transmitted from the second display control unit 62b at the receiving circuit 81 of the display board 80c. When the third display control unit 62c detects a certain period during which the signal does not change from the second display control unit 62b and receives a start command, it stores bit information indicating the subsequent display command in the memory mapped I/O of the address map 82. The bit information is stored in the memory mapped I/O in the display control unit 62c in a predetermined order, for example, from the least significant bit of the first address to the most significant bit. At this time, the bit information of the individual display unit 61c is stored in the memory mapped I/Oc.

The LED output unit 84 of the third display control unit 62c causes the individual display unit 61c to display and output based on the bit information stored in the memory mapped I/Oc assigned to its own display control unit 62c among the information input to the memory mapped I/O. In this case, the individual display unit 61c in group C lights up the LED in a pattern according to the bit information of the memory mapped I/Oc to display and output according to the state of the feeder 20.

In this way, in the substrate-related work display system 60, the three display control units 62a, 62b, and 62c are connected in a daisy chain using signal wiring 63, and the display command unit 64 is connected to the leading display control unit 62a using a communication line 65. Then, information including display commands for the individual display units 61a, 61b, and 61c to the three display control units 62a, 62b, and 62c is sent from the display command unit 64 to the leading display control unit 62a, and then information including the necessary display commands is transferred from the upstream display control unit 62 to the downstream display control unit 62. Then, each display control unit 62a, 62b, and 62c displays and outputs the individual display units 61a, 61b, and 61c.

In this configuration, the display command unit 64 can appropriately issue display commands to the multiple individual display units 61, causing each individual display unit 61 to display the status of the corresponding feeder 20. In addition, in order to display the status of the feeder 20 on all individual display units 61 in response to a display command from the display command unit 64, a minimum of one-port communication line 65 or signal wiring 63 is used between the display command unit 64 and the display control unit 62, and between the display control units 62 connected in series with each other, so there is no need to interpose individual wiring between the display command unit 64 and each individual display unit 61.

Therefore, it is possible to appropriately send display commands from the display command unit 64 to the multiple individual display units 61 without excessive signal wiring between the display command unit 64 and the individual display units 61.

In addition, if individual wiring between the display command unit 64 and each individual display unit 61 is not required as described above, there is no need to arrange a large number of wires on the display boards 80a, 80b, and 80c of each display control unit 62, and the total area of the wiring pattern on the display boards 80a, 80b, and 80c does not become large. Therefore, the dimensions and shapes of each display board 80a, 80b, and 80c are not restricted by the wiring, and each display board 80a, 80b, and 80c can be made smaller.

In addition, in the above configuration, in order to display the status of the feeder 20 on all individual display units 61 in response to a display command from the display command unit 64, one display control unit 62a of the two or more display control units 62a, 62b, and 62c is connected to the display command unit 64 using a communication line 65, and the two or more display control units 62a, 62b, and 62c are connected in a daisy chain using signal wiring 63.

Therefore, no matter how many individual display units 61 are mounted on the electronic component mounting machine 10A, the state of the feeder 20 can be displayed on each individual display unit 61 by increasing or decreasing the number of display boards 80a, 80b, 80c while setting the display boards 80a, 80b, 80c of each display control unit 62 to appropriate dimensions and shapes. In this regard, there is no need to use dedicated boards for the display boards 80a, 80b, 80c, and general-purpose boards can be used, so the display system 60 for substrate-related work can be realized inexpensively and easily.

3. Modified Forms In the above embodiment, the status of the feeder 20 mounted on the electronic component mounting machine 10A is displayed on the individual display unit 61. However, the present disclosure is not limited to this, and the device that displays the status on the individual display unit 61 may be applied to something other than the feeder 20.

The present invention is not limited to the above-described embodiments and modifications, and various changes can be made without departing from the spirit of the present invention.

1: PCB production system, 2: PCB, 10: PCB work machine, 10A: Electronic component mounting machine, 60: PCB work display system, 61: Individual display unit, 62: Display control unit, 63: Signal wiring, 64: Display command unit, 65: Communication line, 80a, 80b, 80c: Display board, 81: Receiving circuit, 82: Address map, 83: Transmitting circuit, 84: LED output unit.

Claims (4)

a plurality of individual display units provided in the substrate-related operation apparatus, each of which corresponds to a plurality of slots in which devices are set, and each of which displays a state of the device set in each of the slots;
two or more display control units that divide the plurality of individual display units into two or more groups and control display of each of the individual display units;
signal wiring that connects the two or more display control units in a daisy chain;
A display command unit that issues a display command to the individual display unit;
a communication line connecting the display command unit and the display control unit at the top;
Equipped with
the display command unit transmits information including all of the display commands for the plurality of individual display units to the leading display control unit via the communication line;
Each of the two or more display control units is
a receiving unit that receives information transmitted from the display command unit or the display control unit that is connected to the display control unit on the upstream side;
a memory mapped I/O to which information received by the receiving unit is input;
a display output unit that displays and outputs the individual display unit assigned to the display control unit based on information of an area assigned to the display control unit among information input to the memory mapped I/O;
a transmitting unit that transmits information input to the memory mapped I/O to the display control unit connected downstream to the display control unit via the signal wiring;
A display system for substrate-related work comprising: The display system for substrate-related work described in claim 1, wherein the transmitting unit transmits information of areas assigned to all the display control units present downstream of the display control unit itself, among the information input to the memory-mapped I/O, to the display control unit connected downstream to the display control unit itself via the signal wiring. The display system for substrate-related work described in claim 1 or 2, wherein each of the two or more display control units includes a circuit board on which a switch is set to identify the display control unit. The display system for substrate-related work described in any one of claims 1 to 3, wherein each of the individual display units is capable of lighting an LED in two or more colors.

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