Indication device

Abstract

To provide a display device in which an arrangement interval of light emitters can be changed with a simple structure.SOLUTION: A display device includes a board on which one or more light emitters are mounted, a wiring structure that is more flexible than the board and connects adjacent boards, and a control unit that controls a light emitting state of the light emitters for each board. An arrangement spacing of the light emitters mounted on each of the adjacent boards is changed in accordance with a spacing of multiple slots into which the feeder that supplies components to the component mounting machine on which the components are mounted, is removably set.SELECTED DRAWING: Figure 6

Description

Technical Field

[0001] This specification relates to a display device.

Background Art

[0002] Conventionally, for example, a mounting machine disclosed in Patent Document 1 is known. The conventional mounting machine includes a plurality of feeder attachment parts and a light-emitting display means having a plurality of light-emitting parts corresponding to each feeder attachment part. And, the light-emitting display means is configured such that a light-emitting body (light-emitting diode) as a light-emitting part is arranged at a position visible from the outside. Thereby, the state of each feeder attachment part can be easily grasped. Also, for example, Patent Documents 2 and 3 disclose techniques for connecting substrates on which electronic components are mounted.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0004] In a component mounting machine that mounts components on a substrate such as the above-described mounting machine, a plurality of feeders corresponding to the types and sizes of the components to be mounted are used in order to mount various components on the substrate. Therefore, in the component mounting machine, it is necessary to support a narrow feeder and a wide feeder to receive the supply of components.

[0005] Incidentally, in the conventional mounting machine described above, for example, when components are supplied from a feeder mounting section having a narrow slot to which a narrow feeder is attached, it is necessary to use a light-emitting indicator means in which a light-emitting element is pre-positioned to correspond to the narrow slot in order to understand the state of the feeder mounting section. On the other hand, for example, when components are supplied from a feeder mounting section having a wide slot to which a wide feeder is attached, it is necessary to use a light-emitting indicator means in which a light-emitting element is pre-positioned to correspond to the wide slot in order to understand the state of the feeder mounting section.

[0006] In other words, the light-emitting indicator used in the aforementioned mounting machine requires multiple types with different arrangements of light-emitting elements depending on the type of feeder mounting section. This compromises the standardization of parts, potentially leading to increased equipment costs.

[0007] This specification aims to provide a display device that allows for changing the spacing between light-emitting elements using a simple structure. [Means for solving the problem]

[0008] This specification discloses a display device comprising: a plurality of substrates on which one or more light-emitting elements are mounted; a wiring structure that is more flexible than the substrates and connects adjacent substrates; and a control unit that controls the light-emitting state of the light-emitting elements for each substrate, wherein the spacing between the light-emitting elements mounted on each adjacent substrate is changed to match the spacing between a plurality of slots on which feeders that supply components to a component mounting machine are detachably set. This specification also discloses a technical concept in which "the display device described in claim 1" has been changed to "the display device described in any one of claims 1-3" in claim 4 of the original application.

[0009] According to the display device, the wiring structure can bend to bring the substrates closer together or further apart, thereby changing the spacing between light-emitting elements mounted on each adjacent substrate. As a result, even when using a display device with different spacings for the light-emitting elements, a single display device can accommodate multiple spacings, and the control unit can control the illumination state of the light-emitting elements while the spacing is changed. Therefore, there is no need to prepare dedicated display devices for each spacing, which promotes the commonality of components and, as a result, makes it possible to achieve a reduction in equipment costs. [Brief explanation of the drawing]

[0010] [Figure 1] This is a diagram illustrating the configuration of a substrate production system including a display device. [Figure 2] This is a diagram illustrating the configuration of the circuit board processing equipment included in the circuit board production system. [Figure 3] This is a schematic perspective view showing the main parts of the reel and feeder. [Figure 4] This is a functional block diagram illustrating the configuration of the display device. [Figure 5] This diagram shows an example of a display device consisting of multiple display units installed on a circuit board handling machine. [Figure 6] This is a detailed configuration diagram of the display unit, display control unit, and wiring structure of the display device. [Figure 7] This is a diagram illustrating the narrow spacing between display devices. [Figure 8] This is a diagram illustrating the wide spacing between display devices. [Figure 9] This is a top view illustrating the configuration of the device pallet in the first modified example. [Figure 10] This is a front view illustrating the display device according to the first modified example. [Figure 11] This is a functional block diagram illustrating the configuration of the host device related to the first modified example. [Figure 12] This is a diagram illustrating the configuration and operation of a display device in relation to a second modified example.

Embodiments for Carrying Out the Invention

[0011] Hereinafter, a display device will be described with reference to the drawings. In the present embodiment, a substrate production system provided with a plurality of substrate-facing working machines equipped with display devices will be exemplified and described.

[0012] 1. Configuration of Substrate Production System 1 The substrate production system 1 is a system for producing a substrate 2 with components mounted thereon. As shown in FIG. 1, the substrate production system 1 includes a plurality of substrate-facing working machines 10, a host device 20 installed outside the substrate-facing working machines 10, and a display device 30 provided in each of the substrate-facing working machines 10.

[0013] The substrate-facing working machine 10 is a device that performs a predetermined operation on the substrate 2 to be produced. Examples of the substrate-facing working machine 10 include, for example, a printing machine, a printing inspection machine, a component mounting machine, a reflow furnace, and an appearance inspection machine. In addition to the above-described devices, the substrate-facing working machine 10 may include, for example, a function inspection machine, a buffer device, a substrate supply device, a substrate inversion device, a shield mounting device, an adhesive coating device, an ultraviolet irradiation device, etc. as required. As shown in FIG. 1, a plurality of types (for example, four types) of substrate-facing working machines 10 form a substrate-facing working line arranged in a predetermined order. The substrate 2 is conveyed by a substrate conveyance device in the order of arrangement of the plurality of types of substrate-facing working machines 10.

[0014] For example, a component mounting machine 10A, which is one type of the substrate-facing working machine 10, performs an operation of loading, positioning, and unloading the substrate 2, and also performs an operation of supplying, collecting, and mounting components, etc. accompanying these operations on the substrate 2. The component mounting machine 10A mounts a plurality of electrical components on the substrate 2 that has been loaded and positioned at a predetermined position, and unloads the substrate 2 with the components mounted thereon.

[0015] As shown in FIG. 2, the component mounting machine 10A has a substrate conveyance device 11, a device pallet 12, a component transfer device 13, and a bracket 14 as a substrate fixing portion that supports the display device 30.

[0016] The substrate transfer device 11 transfers the substrate 2 and positions the substrate 2 on the main body of the component mounting machine 10A. The substrate transfer device 11 includes a guide rail 11a, a conveyor belt, and a clamp device. The substrate transfer device 11 operates the conveyor belt on which the substrate 2 is placed and moves it along the guide rail 11a to guide the substrate 2 in the transport direction X. Then, when the substrate 2 is transported to a predetermined position for mounting components in the transport direction X, the substrate 2 is positioned at the predetermined position by the clamp device.

[0017] The device pallet 12 is detachable from the component mounting machine 10A and has a plurality of slots 12a. The slot 12a is a part where the feeder 3 is detachably set. The feeder 3 is a device that supplies the components to be mounted on the substrate 2 to the component supply position P. The slots 12a are provided at equal intervals so that a plurality (for example, about 30) of feeders 3 can be arranged along the transport direction X. There are types of device pallets 12 corresponding to the component mounting machine 10A used and the production form, and the interval and total number of the slots 12a are determined according to the type of each device pallet 12.

[0018] And in the device pallet 12, among the plurality of slots 12a, the slots 12a where the feeder 3 needs to be detached and attached become the specific slots. In the following description, for the specific slots, the slot 12a for attaching the feeder 3 may be distinguished as the specific slot 12aS, and the slot 12a for removing the feeder 3 may be distinguished as the specific slot 12aR and described separately.

[0019] Here, in the present embodiment, as shown in FIG. 2, the slots 12a of the device pallet 12 are installed on the component mounting machine 10A. And in the present embodiment, the case where an operator detaches and attaches the feeder 3 corresponding to each slot 12a is exemplified.

[0020] Alternatively, as will be described in detail later, slot 12a may be capable of holding each feeder 3 when multiple feeders 3 are housed in a device pallet, which is a hollow box-shaped pallet. Also, slot 12a may be configured to hold the feeders 3 in two layers, upper and lower. In this case, the upper slot 12a can, for example, hold the feeders 3 in an operable manner for each pallet (device pallet). On the other hand, the lower slot 12a can, for example, hold the feeders 3 in advance for use in the production of substrates 2 for each pallet (device pallet), or temporarily hold the feeders 3 that have been used in the production of substrates 2 as used feeders.

[0021] As shown in Figure 3, a reel 4 is loaded into the feeder 3. A carrier tape 5 is wound around the reel 4. The carrier tape 5 has storage sections (not shown) provided at predetermined intervals along its longitudinal direction for storing parts. The feeder 3 then uses a motor (not shown) to feed and move the carrier tape 5 wound around the loaded reel 4, thereby supplying the parts in the storage sections to the parts supply position P.

[0022] Here, the reel 4 comes in multiple types depending on the material of the carrier tape 5 around which it is wound, the type, size, and quantity of components it contains, and the differences in the tape width of the carrier tape 5 and the width of the reel 4. Furthermore, there are multiple types of feeders 3 into which these different types of reel 4 are loaded. In addition, there are different methods for holding the reel 4 loaded by the feeder 3, such as providing holders on the feeder 3 to hold them individually, or providing a holding section on the device pallet 12 to hold them.

[0023] Therefore, each reel 4 is marked with an identification code KR (e.g., a barcode or a two-dimensional code) to identify the individual reel 4. The feeder 3 into which the reels 4 are loaded is marked with an identification code KF (e.g., a barcode or a two-dimensional code) to identify the feeder 3. The identification code KR representing the loaded reel 4 and the identification code KF identifying the feeder 3 into which the reels 4 are loaded are read using, for example, a well-known scanner device during the feeder 3 setup process, and the respective identification codes KR and KF are transmitted to the host device 20.

[0024] Returning to Figure 2, the component transfer device 13 transfers the component supplied to the component supply position P to the substrate 2 positioned by the substrate transport device 11. The component transfer device 13 has a vertically movable mounting head 13a to which holding members such as suction nozzles and gripping members (all not shown) are attached, and a robot 13b that moves the mounting head 13a horizontally.

[0025] The mounting head 13a and the holding member are changed as appropriate depending on the type of component to be transferred to the substrate 2. The component transfer device 13 combines the mounting head 13a and the robot 13b as appropriate to pick up the component supplied to the component supply position P, move it above the positioned substrate 2, and mount the component to a predetermined mounting position on the substrate 2.

[0026] Bracket 14 holds each of the display boards 40 of the display device 30, which will be described later. In this embodiment, as shown in Figure 2, bracket 14 is detachably assembled to the component mounting machine 10A. Bracket 14 then holds the display boards 40, i.e., the display units 31 mounted on the display boards 40, which will be described later, in a manner that corresponds to each slot 12a in the device pallet 12, that is, according to the number of feeders 3 to be held, the width of the feeders 3, etc.

[0027] In this embodiment, the bracket 14 has a pair of guide portions 14a that guide the display board 40 so that it can be inserted, and holds the display board 40 by sliding it, for example, in the Z direction (up and down direction). In addition, multiple types of brackets 14 are available interchangeably, each with an adjusted spacing between the pairs of guide portions 14a so that, for example, the display board 40 is positioned in the center of each slot 12a (see Figures 7 and 8 described later).

[0028] Specifically, when the device pallet 12 has narrow slots 12a, a bracket 14 with a narrow spacing between the pair of guides 14a corresponding to the spacing of the narrow slots 12a is selected and assembled to the component mounting machine 10A (see Figure 7 below). On the other hand, when the device pallet 12 has wide slots 12a, a bracket 14 with a wide spacing between the pair of guides 14a corresponding to the spacing of the wide slots 12a is selected and assembled to the component mounting machine 10A (see Figure 8 below).

[0029] As a result, even if, for example, the device pallet 12 used in the production of substrate 2 is changed to a device pallet 12 with a different width of slots 12a, the display boards 40 of one display device 30 can be arranged with the spacing adjusted to match the width of the slots 12a of the device pallet 12. Therefore, the display device 30 can inform the operator of the status of the device pallet 12, more specifically, the status of attaching and detaching the feeder 3 to each slot 12a, and any abnormalities that occur in the feeder 3.

[0030] The host device 20 is located externally to the component mounting machine 10A and is a device that manages the production of circuit boards 2 by the circuit board production system 1. Furthermore, if the factory has multiple circuit board production systems 1 (i.e., multiple circuit board work lines), the host device 20 can also integrally manage the production of circuit boards 2 by multiple circuit board production systems 1. The host device 20 stores a usage plan that indicates the production schedule for multiple types of circuit boards 2 over a predetermined period (for example, one week or one month), the types of components to be used according to the production plan, i.e., the types of carrier tapes 5 wound on feeders 3 and reels 4, and the number of components.

[0031] The host device 20 communicates data with various devices in the substrate production system 1, including each substrate handling machine 10, via wired or wireless means. In this embodiment, each substrate handling machine 10 has a control device 15. The control device 15 controls various operations on the substrate 2 according to commands from the host device 20. Furthermore, as shown in Figure 4, the control device 15 obtains setup information SI from the host device 20 that represents a specific slot 12aS or specific slot 12aR of the device pallet 12 where the attachment or detachment of the feeder 3 is required.

[0032] 2.Display device 30 The display device 30 of this embodiment is a device that displays various statuses, including whether or not attachment and detachment are necessary, for feeders 3 set in each of the multiple slots 12a of the device pallet 12 of the component mounting machine 10A, in a way that can be visually confirmed by the operator. As shown in Figure 4, the display device 30 is connected to each control device 15 of each component mounting machine 10A and comprises a display unit 31, a display control unit 32, a wiring structure 33, and a display command unit 34.

[0033] Multiple display units 31 are provided, corresponding to the number of slots 12a in the device pallet 12. As will be described later, the display units 31 are mounted on a rigid display board 40 set to a predetermined size. As a result, one display unit 31, i.e., one display board 40, displays the status of the feeder 3 set in or installed in the corresponding slot 12a.

[0034] In this embodiment, the display unit 31, more specifically the display board 40, is mounted to a bracket 14 positioned on the front of the component mounting machine 10A in a location easily visible to the operator. Specifically, each display unit 31 is mounted by sliding a display board 40, set to a predetermined size, along the Z-axis direction (vertical direction) relative to a pair of guide portions 14a of the bracket 14. As a result, it is positioned approximately in the center of the corresponding slot 12a and displays various states of the corresponding slot 12a and the feeder 3.

[0035] Therefore, in the component mounting machine 10A, the multiple display units 31 corresponding to the multiple slots 12a of the device pallet 12 are arranged in a line along the transport direction X in accordance with the arrangement direction and spacing of the slots 12a, as shown in Figure 5. Furthermore, numbers representing the slot number of each slot 12a, or switches, may be placed near the display units 31.

[0036] Here, the multiple display units 31 provided on the component mounting machine 10A are unitized such that n display units 31, that is, n display boards 40 connected by multiple (n-1) wiring structures 33, form one unit. For example, for ease of understanding, let's assume that nine display units 31 are provided on the component mounting machine 10A, as shown in Figure 5. In this case, for example, units A, B, and C are prepared, each consisting of three connected display units 31 (display boards 40), and by connecting these units A, B, and C, nine display units 31 are arranged.

[0037] The display unit 31 notifies the operator whether or not the feeder 3 needs to be attached to or detached from the slot 12a. Specifically, if the feeder 3 needs to be set in the corresponding slot 12a, that is, if the corresponding slot 12a is a specific slot 12bS, the display unit 31 notifies the operator by displaying the corresponding information. Also, if the feeder 3 that is set in the corresponding slot 12a needs to be removed, that is, if the corresponding slot 12a is a specific slot 12bR, the display unit 31 notifies the operator by displaying the corresponding information.

[0038] Furthermore, the display unit 31 displays the status of the feeder 3 set in slot 12a. Here, the status of the feeder 3 can be exemplified as normal state, abnormal state, warning state, etc.

[0039] Normal state indicates that the feeder 3 is properly set in slot 12a and is operational. Abnormal state indicates that although the feeder 3 is properly set in slot 12a, there is an abnormality such as a shortage of parts, a parts supply failure, a suction error, an image processing error, or a communication error, or that the feeder 3 is not properly set in slot 12a. Warning state indicates that although the feeder 3 is properly set in slot 12a, the remaining amount of reels 4 held by the feeder 3 has fallen below a predetermined amount and parts supply is required, or that the feeder 3 is communicating with the control device 15 and the status cannot be displayed, thus warning the operator.

[0040] Each display unit 31 has multiple types of light-emitting elements (for example, three types such as green, orange, and red), such as light-emitting diodes 31a (hereinafter also simply referred to as "LED31a"), and displays a display using each LED31a. The multiple types of LED31a in each display unit 31 are arranged in a line in the transport direction X, for example. Here, the LED31a as light-emitting elements are mounted on the display board 40.

[0041] Each display unit 31 illuminates its LED 31a in a display mode corresponding to the various states of the feeder 3 described above to notify the operator. To give an example of the display modes, when notifying a specific slot 12aS among multiple slots 12a, for example, the corresponding display unit 31 illuminates all colored LEDs 31a to guide the operator to the specific slot 12aS where the feeder 3 should be set. Also, when notifying a specific slot 12aR among multiple slots 12a, for example, the corresponding display unit 31 flashes all colored LEDs 31a to guide the operator to the specific slot 12aR where the feeder 3 should be removed.

[0042] Furthermore, each display unit 31 notifies the operator of the status by, for example, illuminating a green LED 31a when the feeder 3 is in a normal state, and illuminating a red LED 31a when the feeder 3 is in an abnormal state. In addition, each display unit 31 notifies the operator of the status by, for example, illuminating an orange LED 31a when a warning is issued. In this way, the display unit 31 can notify the operator by illuminating multiple types of LEDs 31a individually, or by illuminating two or more types of LEDs 31a in combination.

[0043] The display control unit 32, acting as a control unit, is provided in correspondence to each display unit 31. The display control unit 32 has a microcomputer mounted on the display board 40 as its main component and controls the display mode of the display unit 31 corresponding to itself, that is, the light emission state including the lighting or extinguishing of multiple types of LEDs 31a which are light emitters. The display control units 32 (more specifically, the display board 40) are connected in a daisy-chain fashion using a wiring structure 33 (more specifically, a signal line 33a, which will be described later). Here, among the multiple display control units 32 that form the above-described unit, the display control units 32 located at both ends of the unit are provided with ports (interfaces) to which the wiring structure 33 is connected in order to connect the units to each other.

[0044] For example, in the case of unit A shown in Figure 5, the display control unit 32 located furthest upstream of the three display control units 32 (for example, the leftmost one in unit A in Figure 5) is provided with a connection port to which a wiring structure 33 connected to the display command unit 34 is provided. On the other hand, in the case of unit A shown in Figure 5, the display control unit 32 located furthest downstream (for example, the rightmost one in unit A in Figure 5) is provided with an additional downstream port to which a wiring structure 33 for connecting to the display control unit 32 located furthest upstream of unit B (for example, the leftmost one in unit B in Figure 5) is connected.

[0045] Furthermore, regarding unit B shown in Figure 5, as described above, the display control unit 32 located furthest upstream of the three display control units 32 is provided with an additional upstream port that connects to the wiring structure 33 connected to the display control unit 32 located furthest downstream of unit A. On the other hand, regarding unit B shown in Figure 5, the display control unit 32 located furthest downstream is provided with a downstream port to which a wiring structure 33 for connecting to the display control unit 32 located furthest upstream of unit C (for example, the leftmost unit C in Figure 5) is connected. Moreover, regarding unit C shown in Figure 5, as described above, the display control unit 32 located furthest upstream of the three display control units 32 is provided with an upstream port that connects to the wiring structure 33 connected to the display control unit 32 located furthest downstream of unit B.

[0046] The wiring structure 33 has a signal line 33a and a power line 33b, and connects adjacent display boards 40 to each other. The signal line 33a carries display commands output from the display command unit 34 to control the illumination state of the LED 31a (display unit 31) between the display boards 40 connected by the wiring structure 33. The power line 33b carries power supplied from a power supply (not shown) between the display boards 40 connected by the wiring structure 33.

[0047] Furthermore, the wiring structure 33 is flexible. This allows the wiring structure 33 to change the distance between the display boards 40 (display unit 31 and display control unit 32) while the display boards 40 on which the display unit 31 and display control unit 32 are mounted are connected. Here, the wiring structure 33 is formed on a flexible board, for example, which is more flexible than the rigid display board 40 on which the display unit 31 and display control unit 32 are mounted. The signal lines 33a of the wiring structure 33 are configured to send and receive signals (commands) using a communication standard such as UART (asynchronous communication), which is a serial communication standard.

[0048] The display command unit 34 outputs display commands for the display unit 31 to each display control unit 32. The display command unit 34 is mainly composed of a microcomputer and is included, for example, in the control device 15 that controls the component mounting machine 10A. The display command unit 34 detects whether or not to attach or detach the feeders 3 based on the setup information output from the host device 20, and the status of the feeders 3 set in the slots 12a using detection results from various sensors provided on the component mounting machine 10A, etc. Then, based on the detected status of each feeder 3, the display command unit 34 issues display commands for the display unit 31 to the display control unit 32 corresponding to each feeder 3.

[0049] Here, the display command output by the display command unit 34 includes display commands for all LEDs 31a, which are light-emitting elements of all display units 31 provided by the component mounting machine 10A. For example, if the component mounting machine 10A is equipped with a total of N display units 31, and each display unit 31 has three types of LEDs 31a, then the display command from the display command unit 34 includes on / off commands for N × 3 LEDs 31a. As a result, the display control unit 32 controls the light emission state of each LED 31a so that the display unit 31 (more specifically, each LED 31a) achieves a predetermined display mode according to the display command from the display command unit 34.

[0050] Furthermore, as shown in Figure 6, the display control unit 32 has a display board 40 on which a control chip is mounted. The display board 40 is formed to an appropriate shape and size so that it can slide on a pair of guide portions 14a of the bracket 14. Adjacent display boards 40 are connected in series by a wiring structure 33. Here, the display boards 40 can recognize themselves when connected. This recognition is performed, for example, based on switch settings using a DIP switch or the like to identify their own display board 40.

[0051] Each display board 40 is a circuit board having a receiving circuit 41, an address map 42, a transmitting circuit 43, and an LED output unit 44. The receiving circuit 41 receives information (display commands) transmitted from a display command unit 34 connected upstream to its own display control unit 32, or from another display control unit 32 when units are connected to each other. The address map 42 has memory-mapped I / O to which the information received by the receiving circuit 41 is input. The memory-mapped I / O has a capacity to store information including all the display commands for the multiple display units 31 provided in the corresponding component mounting machine 10A. The memory-mapped I / O is region-configured to correspond to the n display units 31 that form a unit, or to all N display units 31 in total provided in the component mounting machine 10A.

[0052] The transmission circuit 43 transmits the information (display command) input to the memory-mapped I / O of the address map 42 to other display control units 32 connected downstream by the wiring structure 33 when the units are connected to each other. The LED output unit 44 illuminates the LED 31a of the display unit 31 assigned to its own display control unit 32 based on the information in the area of ​​the information (display command) input to the memory-mapped I / O that is assigned to its own display control unit 32.

[0053] Furthermore, the receiving circuit 41 and the transmitting circuit 43 can be controlled by software control using an MPU (Micro Processing Unit) or by hardware control with logic designed to reduce costs. In particular, when hardware control is adopted, the receiving circuit 41 and the transmitting circuit 43 can be constructed using an FPGA (Field Programmable Gate Array). When an FPGA is used, the address area can be increased simply by changing the FPGA program without revising the hardware of the display board 40. This makes it possible to easily increase the number of connected display boards 40.

[0054] 3. Operation of the display device 30 When operating the display device 30, first, the spacing between the LEDs 31a mounted on each of the display units 31, i.e., adjacent display boards 40, is changed and adjusted to match the spacing of the slots 12a of the device pallet 12. Specifically, in the case of narrow slots 12a, as shown in Figure 7, a bracket 14 for narrow spacing is attached to the front of the component mounting machine 10A to match the spacing L1 of the slots 12a. Then, each of the display boards 40, which are connected to each other by the wiring structure 33 and on which the display units 31, i.e., LEDs 31a are mounted, is assembled by sliding them against a pair of guides 14a provided on the bracket 14.

[0055] In this case, the display boards 40 are brought closer together, and the spacing L1 between them becomes narrower. As a result, the wiring structure 33 bends significantly in the contraction direction (large bending), as shown by the dashed line in Figure 7. Consequently, the spacing L1 between the display units 31, i.e., the LEDs 31a, assembled on the bracket 14 is changed to correspond to the spacing of the narrow slots 12a. As a result, the display units 31, i.e., the LEDs 31a, are positioned in the central part of the slots 12a.

[0056] Similarly, in the case of a wide slot 12a, as shown in Figure 8, a bracket 14 for wider spacing is attached to the front of the component mounting machine 10A to match the spacing L2 of the slots 12a. Then, each of the display boards 40, which are connected to each other by a wiring structure 33 and on which the display units 31, i.e., LEDs 31a, are mounted, is assembled by sliding them against a pair of guides 14a provided on the bracket 14.

[0057] In this case, the display boards 40 are spaced apart, and the spacing L2 between them widens. As a result, the wiring structure 33 bends in the direction of extension (the bending is small), as shown by the dashed line in Figure 8. Consequently, the spacing L2 between the display units 31, i.e., the LEDs 31a, assembled on the bracket 14 is changed to correspond to the spacing of the wide slots 12a. As a result, the display units 31, i.e., the LEDs 31a, are positioned in the central part of the slots 12a.

[0058] Here, for example, if the total number of display units 31 to be installed on the component mounting machine 10A is n or more, corresponding to the total number of slots 12a of the device pallet 12, then multiple units are connected (combined) and installed on the component mounting machine 10A. For example, if it is necessary to install a total of 30 display units 31 on the component mounting machine 10A to correspond to 30 slots 12a, and a unit formed from 8 display units 31 is used, then 4 units (32 display units 31) are connected to each other in a chain-like fashion. In this case as well, each display board 40 is slid and assembled to the pair of guide portions 14a of the bracket 14.

[0059] In this case, two display units 31 will be left over. Since the display boards 40 are connected by a flexible wiring structure 33, the extra display units 31 can be placed, for example, on the back side of the bracket 14 (inside the component mounting machine 10A).

[0060] Furthermore, the total number of display units 31 required, N units, can be determined by assigning identification information (such as an ID) to the device pallet 12 to identify the type of display unit. For example, the device pallet 12 may store the identification information determined for each type on its control board, and transmit this identification information from the device pallet 12 to the component mounting machine 10A when the device pallet 12 is connected to the component mounting machine 10A. Alternatively, a barcode or 2D code indicating the identification information may be attached to the device pallet 12, and the ID may be read by various cameras provided on the component transfer device 13.

[0061] Alternatively, the slot 12a may be imaged by various cameras provided on the component mounting machine 10A, and the decision may be made based on the image. The display control unit 32 then determines whether or not it is included in the total of N decisions obtained. A display control unit 32 included in the total of N controls the illumination state of the display unit 31 (LED 31a) assigned to it, while a display control unit 32 not included in the total of N does not control the illumination state of the display unit 31 (LED 31a) assigned to it.

[0062] When the display device 30 is assembled to the component mounting machine 10A, the display command unit 34 provided in the control device 15 outputs display commands to all display control units 32. The display control units 32 then control the illumination state of the LEDs 31a of the display units 31 assigned to them.

[0063] Specifically, when the control device 15 acquires setup information SI from the host device 20, for example, the display control unit 32 controls the illumination state of the LED 31a of the display unit 31 corresponding to a specific slot 12aS or a specific slot 12aR based on the display command from the display command unit 34. Also, when the control device 15 acquires detection results from various sensors, for example, the display control unit 32 controls the illumination state of the LED 31a of each display unit 31 according to the state of the feeder 3 set in the slot 12a, based on the display command from the display command unit 34.

[0064] Here, we will briefly explain how the display control unit 32 controls the illumination state of the LED 31a of the display unit 31. The display command unit 34 generates a display command based on various information acquired by the control device 15. The display command unit 34 then transmits the display command based on the acquired information to the display control unit 32 via the wiring structure 33.

[0065] The information transmitted from the display command unit 34 to the first display control unit 32 includes a period of time during which the signal does not change, followed by a start command (SOH), and then bit information indicating the display commands for all display units 31 (for example, on / off commands for all LEDs 31a). The bit information is arranged so that it is transmitted sequentially to each display unit 31, starting with the upstream display unit 31, then the downstream display unit 31, and so on.

[0066] The upstream, or first, display control unit 32 receives information (display commands) transmitted from the display command unit 34 to the receiving circuit 41 of the display board 40. The first display control unit 32 detects a period of time during which the signal from the display command unit 34 does not change, and when it receives a start command, it stores bit information indicating the subsequent display command in the memory-mapped I / O of the address map 42.

[0067] The display control unit 32 stores bit information into memory-mapped I / O in a predetermined order, for example, from the least significant bit of the starting address to the most significant bit. At this time, the leading display control unit 32 stores the bit information of the leading display unit 31 into the memory-mapped I / O assigned to it, and also stores the bit information of the downstream display units 31 into the memory-mapped I / O assigned to them.

[0068] The LED output unit 44 of the leading display control unit 32 controls the illumination state of the display unit 31 based on the bit information stored in the memory-mapped I / O assigned to its own display control unit 32 from the information input to the memory-mapped I / O. As a result, the display unit 31 lights up each LED 31a in a display mode according to the bit information of the memory-mapped I / O to display the status of the feeder 3 set in slot 12a, or to display the slot 12a in which the feeder 3 is set or the feeder 3 to be removed from slot 12a.

[0069] The leading display control unit 32 transmits the information input to the memory-mapped I / O sequentially to the other display control units 32 connected in a daisy-chain configuration via the wiring structure 33. By transmitting information downstream in this manner, the bit information of the display unit 31 is stored in the address maps 42 of all n display control units 32 that make up the unit. As a result, each display control unit 32 controls the illumination state of the LED 31a of its respective display unit 31, informing the operator of the status in a predetermined display manner.

[0070] As can be understood from the above explanation, the display device 30 comprises a display board 40 on which one or more light-emitting elements, namely LEDs 31a, are mounted; a wiring structure 33 that is more flexible than the display board 40 and connects adjacent display boards 40; and a display control unit 32 that controls the light-emitting state of the LEDs 31a for each display board 40. The spacing L1 and L2 of the LEDs 31a mounted on each of the adjacent display boards 40 is changed to match the spacing of the multiple slots 12a on which the feeder 3 that supplies components to the component mounting machine 10A is detachably set.

[0071] According to the display device 30, the wiring structure 33 flexes to bring the display boards 40 closer together or further apart, thereby changing the spacing L1 and L2 of the LEDs 31a (display unit 31) mounted on each of the adjacent display boards 40. This allows a single display device 30 to accommodate multiple spacings L1 and L2, even when using different LED spacings L1 and L2 to correspond to narrow or wide slots 12a. The display control unit 32 can then control the illumination state of the LEDs 31a (display unit 31) with the LED spacing changed to L1 or L2. Therefore, the display device 30 does not need to be a dedicated product for each spacing L1 and L2, promoting the commonality of parts and, as a result, achieving a reduction in equipment costs.

[0072] 4. First variation In the embodiment described above, an example was given in which the display device 30 is assembled to a bracket 14 fixed to the component mounting machine 10A so as to correspond to a plurality of slots 12a provided on the device pallet 12. Incidentally, in the component mounting machine 10A, the production of the substrate 2 may be carried out by attaching the device pallet 12, which has been pre-attached and detached from the feeder 3 in the external setup area, to the component mounting machine 10A. The display device 30 can also be used when attaching and detaching the feeder 3 to the device pallet 12 in the external setup area. The first modified example will be described below.

[0073] The device pallet 12 is detachably mounted to the component mounting machine 10A and is transported, for example, by a transport vehicle, from the external setup area to the component mounting machine 10A, or from the component mounting machine 10A to the external setup area. As shown in Figure 9, the device pallet 12 is capable of supporting multiple feeders 3 and has multiple slots 12a into which the feeders 3 are detachably set. In the following description, among the multiple slots 12a, the slot 12a into which the feeders 3 are set may be referred to as a specific slot 12aS, and the slot 12a from which the feeders 3 are removed may be referred to as a specific slot 12aR.

[0074] The device pallet 12 is used, for example, in an external setup area located outside the production line where the circuit board 2 is produced. This area is used for tasks such as loading the reel 4 onto the feeder 3 (kitting) and setting up the feeder 3 by attaching and detaching it. For this reason, as shown in Figure 10, a workbench 16 is installed in the external setup area for placing the device pallet 12 and performing the above tasks.

[0075] A bracket 17 is assembled on the workbench 16, similar to the bracket 14 described above, to change the spacing of the display boards 40 (display units 31) to correspond to the type of device pallet 12, i.e., the spacing of the slots 12a. Thus, even in the first modified example, by appropriately replacing the bracket 17, the spacing of each display board 40 (display units 31) connected by the wiring structure 33 can be changed to correspond to the spacing of the slots 12a of the device pallet 12.

[0076] Furthermore, a control device 18 connected to the display device 30 is installed in the external setup area. The control device 18 transmits the identification codes KR and KF of the reel 4 and feeder 3, respectively, to the host device 20 and acquires the setup information SI output from the host device 20. In the first modified example, the display command unit 34 supplies display commands to all display control units 32 based on the setup information SI acquired by the control device 18. As a result, in the first modified example as well, the display control unit 32 controls the illumination state of the LED 31a of the display unit 31 corresponding to a specific slot 12aS or a specific slot 12aR based on the display commands from the display command unit 34.

[0077] Here, the configuration of the host device 20 in the first modified example will be explained. As shown in Figure 11, the host device 20 has an input unit 21, a matching unit 22, a determination unit 23, and an output unit 24.

[0078] The input unit 21 receives the identification code KR for the reel R and the identification code KF for the feeder F, and supplies the input identification codes KR and KF to the verification unit 22. The verification unit 22 uses the identification codes KR and KF to verify the reel R and feeder F that have been kitted by the worker, and supplies verification information VI representing the verification result to the determination unit 23.

[0079] The determination unit 23 uses verification information VI to determine a specific slot 12aS to set the feeder 3 loaded with reel R, or a specific slot 12aR to remove the feeder 3, and generates setup information SI representing the specific slots 12aS and 12aR. The determination unit 23 then supplies the generated setup information SI to the output unit 24. The output unit 24 outputs the setup information SI to the control device 18 via a network (not shown).

[0080] In the first modified example, the display device 30 is mounted to the workbench 16 via a bracket 17 corresponding to the type of device pallet 12. Therefore, the same effects as in the above-described embodiment can be obtained in the first modified example as well. Furthermore, in the first modified example, the display device 30 can support the setup work by informing the worker of a specific slot 12aS or a specific slot 12aR among the multiple slots 12a of the device pallet 12 in a predetermined display manner.

[0081] 5. Second variation In the embodiments and first modified examples described above, for example, the spacing between the display boards 40 (display sections 31) is changed to match the spacing of the slots 12a by having an operator assemble each display board 40 connected by the wiring structure 33 onto the brackets 14 and 17. Incidentally, in the display device 30, as shown in Figure 12, an elastic member 35 can be provided that connects the display boards 40 and expands and contracts within a range in which the deflection of the wiring structure 33 is maintained.

[0082] When the elastic members 35 are provided, for example, by having an operator move the display boards 40 located at both ends in a direction that separates them from each other, as shown in Figure 12, all the elastic members 35 stretch almost uniformly. As a result, the spacing between the display boards 40 (display units 31) is widened almost uniformly. Therefore, when assembling the display device 30 to the brackets 14 and 17, the spacing can be changed by, for example, having an operator pull the display boards 40 at both ends, thus simplifying the assembly process to the brackets 14 and 17.

[0083] 6. Other variations In the embodiments, first and second modifications described above, the display device 30 is assembled to the brackets 14 and 17 by, for example, sliding it. This changes and fixes the spacing of the display board 40 (display section 31) of the display device 30 to match the spacing of the slots 12a.

[0084] However, the fixing of the display board 40 (display unit 31) is not limited to using brackets 14 and 17 or to assembling it by sliding it onto brackets 14 and 17. For example, the display board 40 (display unit 31) can be directly and detachably bonded and fixed to predetermined positions on the component mounting machine 10A, the workbench 16, and brackets 14 and 17. Alternatively, screw holes can be provided in advance on the component mounting machine 10A, the workbench 16, and brackets 14 and 17, as well as on the display board 40, and the display board 40 (display unit 31) can be fixed by screwing it in. In these cases as well, the same effects as those of the above-described embodiment and each of the above-described modifications can be expected.

[0085] Furthermore, in the above-described embodiment, the first modified example, and the second modified example, when n display boards 40 (display units 31) are connected in a daisy-chain configuration using a wiring structure 33, a receiving circuit 41 is provided on the upstream display board 40, and a transmitting circuit 43 is provided on the downstream display board 40. The display boards 40 located between the upstream and downstream are directly connected to each other by the wiring structure 33.

[0086] However, it is also possible to provide a receiving circuit 41 and a transmitting circuit 43 on all n display boards 40. In this case, the n display boards 40 can be connected in a daisy-chain fashion by connecting the opposing receiving circuits 41 and transmitting circuits 43 on adjacent display boards 40 using a wiring structure 33. However, in this case, it is necessary to provide a receiving circuit 41 and a transmitting circuit 43 on all display boards 40, and it is necessary to connect the display boards 40 to each other using a wiring structure 33, which raises concerns about an increase in the manufacturing cost of the display device 30.

[0087] Furthermore, in the embodiments, first modified example, and second modified example described above, the display device 30 is installed on a component mounting machine 10A that mounts components onto the substrate 2, and the spacing of the LEDs 31a of the display unit 31 is changed to correspond to the narrow slots 12a and the wide slots 12a. However, it goes without saying that the display device 30 can be installed on other devices where it is necessary to change the spacing of the LEDs 31a of the display unit 31. [Explanation of symbols]

[0088] 1... PCB production system, 2... PCB, 3... Feeder, 4... Reel, 5... Carrier tape, 10... PCB handling machine, 11... PCB transport device, 11a... Guide rail, 12... Device pallet, 12a... Slot, 12aS, 12aR... Specific slot, 13... Component transfer device, 13a... Mounting head, 13b... Robot, 14... Bracket (PCB fixing part), 14a... Guide part, 15... Control device, 16... Workbench, 17... Bracket (PCB fixing part), 18... Control device, 20... Host device, 21 ...Input unit, 22...Verification unit, 23...Determination unit, 24...Output unit, 30...Display device, 31...Display unit, 31a...Light-emitting diode (light-emitting element), 32...Display control unit (control unit), 33...Wiring structure, 33a...Signal line, 33b...Power line, 34...Display command unit, 35...Elastic member, 40...Display board, 41...Receiving circuit, 42...Address map, 43...Transmitting circuit, 44...LED output unit, L1, L2...Placement spacing, SI...Setup information, VI...Verification information (verification result), P...Component supply position.

Claims

1. Multiple substrates on which one or more light-emitting elements are mounted, A wiring structure that is more flexible than the aforementioned substrate and connects adjacent substrates, A control unit that controls the light emission state of the light-emitting element for each substrate, Equipped with, The spacing between the light-emitting elements mounted on each of the adjacent substrates is changed to match the spacing between the multiple slots on which the feeder that supplies the components to the component mounting machine is detachably set, The component mounting machine is capable of selectively mounting multiple types of device pallets in which the spacing between the multiple slots differs from one another. A display device in which the circuit boards are arranged such that one circuit board corresponds to each of the slots of the equipped device pallet.

2. The display device according to claim 1, wherein a plurality of the substrates and a plurality of the wiring structures are treated as a single unit, and a plurality of the units are combined and arranged according to the total number of slots provided in the device pallet.

3. The display device according to claim 1, wherein each of the multiple substrates is fixed to a substrate fixing portion provided corresponding to the spacing between the multiple slots, thereby changing the arrangement spacing.

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