JP2017011024A - Electronic component mounting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic component mounting system that can easily and surely perform maintenance and enhancement of a through-put.SOLUTION: An electronic component mounting system includes an operation controller 230 for executing any one of lane flowing programs 221-224 stored in a storage unit 220 to control the operations of a first transport device 2A and a second transport device 2B, and a first component mounting device 3A and a second component mounting device 3B, a switching necessity determination unit 233 for determining whether or not a program executed by the operation controller 230 is necessary to be switched, and a program switching unit 234. When the switching necessity determination unit 233 determines that the switching of the program executed by the operation control unit 230 is necessary, the program switching unit 234 switches the program executed by the operation controller 230 during a mounting interval IT as a time period from a time when the first component mounting device 3A and the second component mounting device 3B complete one mounting operation till a time before the next mounting operation is started.SELECTED DRAWING: Figure 4

Description

  The present invention relates to an electronic component mounting system, and more particularly to an electronic component mounting system of each component mounting apparatus in a dual type mounting system in which a plurality of lanes are arranged in parallel.

  In a mounting system for mass production of substrates on which electronic components are mounted, in the dual type mounting system, two lanes parallel to each other are set, and in each lane, a first transport device and a second transport device that transport the substrate Is provided. Each of the first transport device and the second transport device has functional parts such as a conveyor, and by these functional parts, the substrate is transported in the longitudinal direction of the lane and is transported to a preset substrate stop position. It is configured as follows. A first component mounting device and a second component mounting device are provided in the first transport device and the second transport device, respectively. The first component mounting device and the second component mounting device are arranged to face each other across both lanes. Each of the first component mounting apparatus and the second component mounting apparatus includes a component supply unit and a mounting head. Each component supply unit supplies an electronic component mounted on the substrate to a corresponding mounting head. Each mounting head is configured to be movable on any of the boards carried into the respective board stop positions at positions facing the first component mounting apparatus and the second component mounting apparatus. Based on the mounting mode, the electronic component provided by the component supply unit is picked up, and the electronic component is mounted on the substrate determined by the mounting mode.

  As a mounting mode for mounting electronic components, a dual lane flow method and a single lane flow method are known depending on the transport mode of the substrate. The dual lane flow method can be classified into a synchronous transport method and an asynchronous transport method.

  The dual lane flow method is a mounting mode in which the first component mounting device and the second component mounting device mount electronic components on both substrates respectively transported by both the first transport device and the second transport device. Is a general term.

  In the synchronous transport method, the first transport device and the second transport device transport the substrate simultaneously (that is, in synchronization), and the first component mounting device mounts the electronic component on the substrate stopped by the first transport device. In addition, the second component mounting apparatus is a mounting mode based on mounting electronic components on the board stopped on the second transport device.

  In the asynchronous transfer method, the first transfer device and the second transfer device transfer the substrates individually (that is, asynchronously), and the first component mounting device mounts the electronic component on the substrate stopped by the first transfer device. In addition, the second component mounting apparatus refers to a mounting mode in which electronic components are mounted on the substrate stopped by the second transport device.

  On the other hand, the single lane flow method is a mounting mode that can be used not only in a dual lane but also in a single lane. A plurality of component mounting apparatuses are arranged in one lane, and the plurality of component mounting apparatuses cooperate with each other. A mounting mode in which electronic components are mounted on the same board. When the single lane flow method is executed in dual lanes, both the first component mounting device and the second component mounting device are electronic on the substrate transported to either the first transport device or the second transport device. Components will be mounted.

  In each mounting mode, advantages and disadvantages may occur depending on the type of substrate to be produced and the effect of tact. Therefore, conventionally, a technique for selecting a suitable mounting mode has been proposed.

  For example, in Japanese Patent Application Laid-Open No. H10-228561, the mounting mode is either an alternating mode corresponding to the single lane flow method or an independent mode corresponding to the asynchronous transport method in consideration of an operation situation assumed before the operation of the mounting system. On the other hand, a component mounting system that is alternatively set in advance is disclosed.

  Also, in Patent Document 2, an asynchronous transport method is adopted when changing the model of a substrate to be transported or when transporting a substrate in one lane, and electronic components are mounted on the substrate by a synchronous transport method during other operations. A component mounting system is disclosed.

JP 2009-239257 A JP 2004-128400 A

  In the configurations disclosed in Patent Documents 1 and 2, a program that can execute a plurality of mounting modes is provided, and high throughput (the number of production per predetermined time) is maintained and improved by switching under a predetermined condition. However, with these configurations of Patent Documents 1 and 2, it is not always easy to maintain and improve throughput.

  First, in the configuration of Patent Document 1, when the independent mode (asynchronous transport method) is selected as the mounting mode, when waiting for transport of a substrate occurs for some reason, mounting of the other substrate is performed until the substrate arrives. In the first place, there was a problem that it was difficult to maintain and improve the throughput as a result of being unable to shift to work and lowering the operating rate.

  In the configuration of Patent Document 2, although the mounting mode can be switched dynamically during operation, the switching timing is when the board in the opposite lane is being transported (when the board has not arrived), or The width of the opposite lane was being changed. Therefore, in the configuration of Patent Document 2, when both of the component mounting apparatuses have mounted electronic components on the board that has arrived first in one lane, if the board arrives late in the other lane, The component mounting apparatus corresponding to the lane switches the program for realizing the mounting mode in the middle, and mounts the electronic component on the board arriving at the other lane. As a result, depending on the timing at which the program is switched, the program before switching is incomplete, so it becomes necessary to manage data related to the electronic components mounted before switching the program, and data processing during program execution before and after switching There was a problem that became complicated and difficult. For this reason, not only does the program switching process take time, but also the probability that a bug will occur in the program increases, making it difficult to construct a highly reliable system.

  The present invention has been made in view of the above-described problems, and it is an object of the present invention to provide a highly reliable electronic component mounting system that can be easily and reliably realized in maintaining and improving throughput. .

  In order to solve the above-mentioned problems, the present invention is provided for each of the first lane and the second lane for transporting a substrate parallel to each other, each transporting a substrate, and a predetermined substrate stop for each of the substrates. Any of the first transport device and the second transport device that transports the substrate after the mounting operation from the substrate stop position and the first transport device and the second transport device to the substrate stop position. A first component mounting device and a second component mounting device capable of mounting electronic components on a board, and a storage unit for storing information on a mounting mode which is a control method of the first component mounting device and the second component mounting device And a control unit, the information regarding the mounting mode stored in the storage unit is transported by both the first transport device and the second transport device, respectively. A dual lane flow program for executing a mounting mode in which the first component mounting apparatus and the second component mounting apparatus respectively mount electronic components on both of the printed circuit boards, the first transport apparatus, and the second transport A single-lane flow program for executing a mounting mode in which both the first component mounting device and the second component mounting device mount electronic components on a substrate conveyed by any one of the devices, and The control unit executes any one program stored in the storage unit, thereby controlling an operation of the first component mounting apparatus and the second component mounting apparatus, and a preset switching condition. The necessity determination unit for determining whether or not to switch the program executed by the operation control unit based on the above, and the necessity determination for switching the program executed by the operation control unit Is a period from when either one of the first component mounting apparatus and the second component mounting apparatus completes one mounting operation to before starting the next mounting operation Switching to switch the program executed by the operation control unit to the program based on the determination result of the necessity determination unit when the mounting interval is in progress and the other is waiting for the arrival of the substrate. The electronic component mounting system is characterized by including an electronic component.

  In this aspect, in order to increase the operating rate according to the actual driving situation and maintain high throughput of the entire system, one of the first component mounting apparatus and the second component mounting apparatus completes one mounting operation and The program switching process is executed during the mounting interval, which is the period before the mounting work is started, and when the other is waiting for the board in a state of waiting for the arrival of the board. As a result, no matter which program is selected and switched, the program before switching is complete, so there is no need to manage data related to electronic components mounted before switching the program, and the program before and after switching. Data processing at the time of execution can be realized easily and reliably, and the implementation becomes easy. Therefore, not only can the time for the program switching process be shortened, but the probability that a bug will occur in the program is reduced, and there is an advantage that it is easy to construct a highly reliable system.

  In the electronic component mounting system according to a preferred aspect, the necessity determination unit determines whether or not the program needs to be switched every time the mounting interval starts in one of the first transfer device and the second transfer device. In this aspect, every time the mounting interval starts, in other words, every time the board mounting operation is completed, it is determined whether the program needs to be switched. For example, in the production line where the mounting system is installed, the dual lane When the flow program is being executed, this determination makes it possible to return the program executed by the operation control unit to the dual lane flow program.

  In the electronic component mounting system according to a preferred aspect, the necessity determination unit is a dual lane of a synchronous conveyance system in which a program executed by the operation control unit conveys a substrate to the first conveyance device and the second conveyance device at the same time. In the case of the flow program, the program executed by the operation control unit when the waiting for the substrate occurs in one of the first transfer device and the second transfer device is changed to the single lane flow program. It is determined that it is necessary to switch. In this mode, when a synchronous lane dual lane flow program is executed and a board wait occurs in any lane, the component mounting apparatus corresponding to this lane (the first component for the first transport apparatus) Since the mounting device or the second component mounting device for the second transport device) can be used for mounting the substrate transported to the opposite lane, the operation rate of the component mounting device corresponding to the lane where the substrate waits is increased. be able to.

  In the electronic component mounting system according to a preferred aspect, the necessity determination unit is an asynchronous conveyance type dual in which the program executed by the operation control unit individually conveys the substrate to the first conveyance device and the second conveyance device. In the case of the lane flow program, when either the first transfer device or the second transfer device waits for the substrate, time difference calculation processing is executed, and the time difference calculation processing is When the mounting mode is switched to the single lane flow program, processing for calculating a shortened time to be shortened in the lane in which the board mounting operation is executed, and the mounting mode is switched to the single lane flow program In such a case, there is a mounting wait state in which the board that has arrived in the lane where the board wait occurs is waiting for the start of the mounting work. The operation waiting time is compared with the processing for calculating the mounting waiting time and the shortening time and the mounting waiting time, and the operation control unit executes when the shortening time is longer than the mounting waiting time. Determining that it is necessary to switch the program to be switched to the single lane flow program. In this aspect, when the asynchronous lane dual-lane flow program is executed, if a board wait occurs in any lane, the time difference calculation process is executed first without executing the switching process immediately. Therefore, by this time difference calculation process, the shortening time obtained by switching the mounting mode and the mounting waiting time that can be generated by switching the mounting mode are compared and the suitability of program switching is determined. Therefore, it is possible to increase the operating rate and maintain high throughput in a suitable mounting mode while preventing inadvertent switching of the mounting mode.

  In the electronic component mounting system according to a preferred aspect, the storage unit further includes driving situation determination data for storing a standard waiting time of the driving situation in association with each code uniquely indicating the driving situation causing the board waiting. The time difference calculation processing is based on the processing for calculating the substrate waiting time generated in the lane based on the standard waiting time corresponding to the operation state in the lane in which the substrate waiting occurs, and the calculated substrate waiting time. And processing for calculating the mounting waiting time. In this aspect, it is possible to improve the calculation accuracy of the substrate waiting time according to various aspects of the driving situation. As an aspect of the operation status, for example, the stock status in the upstream apparatus, the remaining number of mounting points, the presence / absence of an error, etc. are exemplified.

  In the electronic component mounting system according to a preferred aspect, when the operation control unit is executing the program for single-lane flow when the operation control unit is executing the program for single lane flow, the operation control It is determined that the program executed by the section needs to be switched to the dual lane flow program. In this aspect, when the cause of the waiting for the substrate is solved, the throughput can be improved by switching from the single lane flow program to a program suitable for the dual lane.

  In the electronic component mounting system according to a preferred aspect, the first component mounting apparatus and the second component mounting apparatus further include a first component supply unit and a second component supply unit that supply electronic components mounted on the substrate, respectively. The first component supply unit and the second component supply unit are stocked with electronic components necessary for executing the single lane flow program. In this aspect, even when the mounting mode is switched from the dual lane flow program to the single lane flow program, it is possible to procure necessary components from each component supply unit and to perform the mounting operation smoothly. .

  In the electronic component mounting system according to a preferred aspect, the electronic components required when executing the program for moving the single lane are based on the number of mounting points on the board, the component supply form, the necessity of deadline management, and the necessity of permission of copying by the user. Selected based on selected requirements. In this aspect, when the electronic parts necessary for executing the program for flowing the single lane are stocked in each part supply unit, it is possible to stock suitable electronic parts suitable for the actual situation of implementation.

  In the electronic component mounting system according to a preferred aspect, the switching unit selects a dual-lane flow program in an initial state. In this aspect, a program suitable for dual lanes can be executed first and switched to a single lane flow program as needed.

  As described above, according to the present invention, in order to increase the operating rate according to the actual driving situation and maintain high throughput of the entire system, by executing the program switching process during the mounting interval, There is a remarkable effect that it is possible to provide a highly reliable electronic component mounting system that can be reliably realized.

  Further features, objects, configurations, and advantages of the present invention will be readily understood from the following detailed description that should be read in conjunction with the accompanying drawings.

1 is a schematic plan view of a component mounting system according to an embodiment of the present invention. It is explanatory drawing of the processing time which concerns on embodiment of FIG. FIG. 2 is a block diagram according to the embodiment of FIG. 1. It is a flowchart which shows the program switching process which concerns on embodiment of FIG. It is a flowchart which shows the switching necessity determination processing subroutine in the flowchart of FIG. FIG. 5 is an example of the execution result of the flowchart of FIG. 4, and is a timing chart for comparing (A) when the program is switched and (B) when the program is not switched when the substrate is transported by the synchronous transport method. . FIG. 4 is an example of the execution result of the flowchart of FIG. 4, and when the substrate is transported by the asynchronous transport method, the program is switched by comparing (A) when the program is switched with (B) when the program is not switched. It is a timing chart which shows a case when loss time generate | occur | produces by this. FIG. 4 is an example of the execution result of the flowchart of FIG. 4, and when the substrate is transported by the asynchronous transport method, the program is switched by comparing (A) when the program is switched with (B) when the program is not switched. It is a timing chart which shows the case when efficiency is improved by this.

  The best mode for carrying out the present invention will be described below with reference to the accompanying drawings.

  First, referring to FIG. 1, a component mounting system 1 according to an embodiment of the present invention is provided in a dual lane production line for a printed circuit board W. The production line comprises a first lane and a second lane set in parallel with each other. The printed circuit board W is transported from the upstream side to the downstream side of the first lane and the second lane, and necessary processing is sequentially performed. It is comprised so that it may give.

  In the following description, the conveyance direction of the printed circuit board W (in FIG. 1, the right side to the left side in the longitudinal direction) is the substrate conveyance direction, and the horizontal direction along the substrate conveyance direction is the X-axis direction and the horizontal direction orthogonal to the X-axis direction. Is the Y-axis direction. In the Y-axis direction, the upper side in the width direction in FIG.

  In the production line, on the upstream side of the component mounting system 1, a loader and a printing device are linearly connected in order from the upstream side. Moreover, the downstream side of the component mounting system 1 is linearly connected in order from the reflow device and the unloader upstream side.

  Under the control of the host computer, the printed circuit board W is supplied from the loader, is subjected to a mounting operation such as cream solder by a printing apparatus, and then is carried into the component mounting system 1. The component mounting system 1 mounts an electronic component on a printed printed board W, and then carries the printed board W mounted on the reflow apparatus. The printed circuit board W carried out is subjected to a reflow process by the reflow apparatus and then collected by the unloader.

  The devices provided in the production line are autonomous devices each including a control device, including the component mounting system 1 according to the present embodiment, and their operations are individually controlled by their control devices. It is like that. On the other hand, the production line is provided with a host computer connected to the control device of each device via a LAN system. The host computer comprehensively controls the operation of each device based on a production program corresponding to the printed circuit board W to be produced, and also prior to the start of production of the printed circuit board W, the transport method and mounting of the printed circuit board Determine the mode. As will be described in detail later, the control device 20 of the component mounting system 1 controls each unit based on the mounting mode determined by the host computer by communicating with the host computer.

  Next, details of the component mounting system 1 will be described.

  The component mounting system 1 includes a first transport device 2A and a second transport device 2B that extend in parallel to each other in the X-axis direction and are aligned in the Y-axis direction, and a component mounting device that is disposed to face the both transport devices 2A and 2B. 3A and 3B.

  The first transfer device 2A is along the first lane of the production line, and the second transfer device 2B is along the second lane, and each constitutes a part of the transfer device of the production line. Each of the conveying devices 2A and 2B has functional parts such as a belt conveyor, a motor, and a sensor, and these functional parts are controlled by the control device 20.

  Substrate stop positions Pn are respectively set at substantially central portions of the transfer apparatuses 2A and 2B. The printed circuit board W transported from the upstream side in the X-axis direction by the transport apparatuses 2A and 2B is transported to the board stop position Pn, temporarily stopped, and used for mounting electronic components. After the electronic component mounting operation, the printed circuit board W is carried out downstream in the X-axis direction.

  A substrate fixing mechanism (not shown) is provided at the substrate carry-out position Pn. These substrate fixing mechanisms position and fix the printed circuit board W at the substrate stop position Pn in a state where the printed circuit board W is lifted from each of the transfer devices 2A and 2B. The board fixing mechanism lifts up the temporarily stopped printed circuit board W in order to use the printed circuit board W for mounting electronic components.

  After the mounting operation, the lifted-up printed circuit board W is returned to the transport apparatuses 2A and 2B again. The board fixing mechanism releases the fixation of the printed circuit board W returned to the corresponding transport apparatuses 2A and 2B, and transfers the printed circuit board W to the corresponding transport apparatuses 2A and 2B. Each of the transport apparatuses 2A and 2B transports the transferred printed board W from the board stop position Pn to the downstream side.

  Next, each of the first component mounting apparatus 3A and the second component mounting apparatus 3B includes a component supply unit (first component supply unit 11A and second component supply unit 11B, respectively) and a mounting head (respectively first mounting head, respectively). 12A, second mounting head 12B).

  11 A of 1st component supply parts and the 2nd component supply part 11B are arrange | positioned on the outer side of both the conveying apparatuses 2A and 2B, respectively. Specifically, the first component supply unit 11A is disposed on the front side of the first conveyance device 2A, and the second component supply unit 11B is disposed on the rear side of the second conveyance device 2B.

  A plurality of tape feeders 111 and 113 are provided in the first component supply unit 11A. The second component supply unit 11B is provided with a plurality of tape feeders 112 and 113. These tape feeders 111, 112, and 113 are all arranged in the X-axis direction and are arranged along the Y-axis direction. Each of the tape feeders 111, 112, and 113 includes a reel on which a small electronic component such as an integrated circuit (IC), a transistor, a resistor, and a capacitor is held at a predetermined interval, and an electronic device that draws the tape from the reel. A component feeding mechanism for feeding the components one by one to the component supply position at the tip of the tape feeder is provided. However, the tape feeders 111, 112, and 113 arranged in the first component supply unit 11A and the second component supply unit 11B are not limited to the above configuration, and are supplied in a state where the package components are placed on the tray. Other component supply devices such as a tray tape feeder may be used.

  Also, the component feeder 11A of the first component mounting apparatus 3A has a tape feeder 111 that stocks electronic components individually selected according to the type of the printed circuit board W transported to the corresponding first transport apparatus 2A. And a tape feeder 113 in which common electronic components suitable for the printed circuit board W transported to the opposing second transport device 2B are stocked. Similarly, in the component supply unit 11B of the second component mounting apparatus 3B, a tape feeder that stocks electronic components individually selected according to the type of the printed circuit board W to be transported to the corresponding second transport apparatus 2B. 112 and a tape feeder 113 in which common electronic components suitable for the printed circuit board W transported to the opposing transport device 2A (2B) are stocked.

  Among these, the electronic parts stocked in the tape feeder 113 where the common electronic parts are stocked are necessary when executing the single lane flow programs 223 and 224 described later, and the number of points mounted on the printed circuit board W (stock Selected based on requirements selected from component supply form (whether it is suitable for each mounting head), necessity of deadline management, and necessity of user duplication permission Has been. Those having a small number of mounting points, those that are not suitable for the mounting head of the opposite lane, those that have strict deadline management, and those that are not permitted to be duplicated by the user are removed from the shared tape feeder 113, and the transport device 2A that is suitable for each. And 2B are held by the tape feeder 111 or 113, and the others are held by the tape feeder 113.

  The mounting head 12A and the mounting head 12B take out components from the tape feeders 111, 112, 113 of the corresponding component supply units 11A, 11B, respectively, and mount them on the printed circuit board W. Above the board stop position Pn Has been deployed.

  The mounting heads 12A and 12B are provided so as to be movable in the X-axis direction and the Y-axis direction by devices not shown in the drawing, respectively, and include a plurality of suction nozzles 15 movable in the vertical direction. Each suction nozzle 15 extends up and down toward the suction port for sucking the lower electronic component, and is arranged in parallel at a predetermined interval. Each mounting head 12A, 12B drives the suction nozzle 15 up and down from above the tape feeder 111, 112, 113 to pick up the electronic component supplied to the component supply position from the tape feeder 111, 112, 113. On the other hand, the electronic component is mounted on the printed circuit board W by moving above the printed circuit board W provided at the substrate stop position Pn and driving each suction nozzle 15 up and down. .

  Here, the first mounting head 12A is disposed on the front side of the apparatus with respect to the second mounting head 12B, picks up an electronic component from only the first component supply unit 11A, and moves it to the board stop position Pn of the first transfer device 2A. Electronic components can be mounted on the supplied printed board W and the printed board W provided at the board stop position Pn of the second transport device 2B. Similarly, the second mounting head 12B takes out an electronic component only from the second component supply unit 11B and places it on the printed circuit board W provided at the component mounting position of the first transport device 2A and the component mounting position of the second transport device 2B. An electronic component can be mounted on the provided printed circuit board W.

  In this component mounting system 1, component control is possible based on various mounting modes by controlling the first and second transfer devices 2A and 2B and the mounting heads 12A and 12B by the control device 20. In executing each mounting mode, the first and second component mounting apparatuses 3A and 3B, as shown in FIG. 2, perform board loading, mounting work, and board processing in order to process one printed board W in a steady state. Repeat the cycle of unloading.

  Referring to FIGS. 1 and 2, from the time when the printed circuit board W is transported by the belt conveyor of the transport apparatus 2A (2B) to the time when the lift-up operation by the substrate fixing mechanism (not shown) is completed, It is import. The mounting operation shown in FIG. 2 is from the completion of the substrate fixing mechanism lift-up operation to the time when the mounting operation by the mounting head 12A (12B) is completed. Furthermore, the board unloading of FIG. 2 is performed from the end of the mounting operation to the time when the sending operation of the printed board W is completed.

  In the following description, in the steady state, the time from the production of one printed board W to the completion of the production of the printed board W and the start of the production of the next printed board W is referred to as “mounting cycle time”. CT ". Of the mounting cycle time CT, the time required for “mounting work” is particularly referred to as “mounting time MT”. Furthermore, a period from the time when the mounting work of a certain printed circuit board W is completed to the time before the next mounting work is started is referred to as “mounting interval IT”.

  Next, the mounting mode of this embodiment will be described.

  As described in the background art section, the mounting mode for mounting electronic components includes a dual lane flow method and a single lane flow method according to the transport mode of the board, and the dual lane flow method is synchronous. It can be classified into a transport system and an asynchronous transport system.

  In the present embodiment, as shown below, “synchronous transfer onboard mounting mode” and “asynchronous transfer independent mounting mode” are prepared as dual lane flow methods, and “asynchronous transfer alternate mounting mode” is provided as single lane flow methods. Is prepared.

<Synchronous transfer onboard mounting mode>
This mounting mode is an example of a synchronous transport method, and the first mounting head is synchronized with the printed circuit board W transported to the first transport apparatus 2A and the printed circuit board W transported to the second transport apparatus 2B. 12A and the second mounting head 12B are mounted on the printed circuit board W that is transported to the first transport device 2A, and the print that is transported to the second transport device 2B by the first mounting head 12A and the second mounting head 12B. In this mode, mounting is performed on the substrate W.

  That is, in the synchronous transport mounting mounting mode, the first mounting head 12A also enters the printed circuit board W in the second lane to mount some electronic components, and the second mounting head 12B is mounted on the printed circuit board in the first lane. A part of electronic parts are mounted on W. In this mounting mode, both printed circuit boards W are synchronously transported even if there is a difference in the mounting time MT of both printed circuit boards W, and therefore transported to the printed circuit board W transported to the first transport apparatus 2A and the second transport apparatus 2B. This is a mounting mode in which there is no difference in the number of production with the printed circuit board W. In addition, since the electronic components are mounted on both the mounting heads 12A and 12B as if the two printed boards W are one printed board, the mounting time MT for the two sheets is the shortest.

<Asynchronous transport independent mounting mode>
This mounting mode is a kind of asynchronous transport method, in which the first mounting head is transported asynchronously between the printed circuit board W transported to the first transport apparatus 2A and the printed circuit board W transported to the second transport apparatus 2B. This is a mounting mode in which component mounting is performed only on the printed circuit board W transported to the first transport apparatus 2A by 12A, while mounting is performed only on the printed circuit board W transported to the second transport apparatus 2B by the second mounting head 12B. Accordingly, components are mounted on the printed circuit board W transported to the second transport apparatus 2B by the first mounting head 12A, while components are mounted on the printed circuit board W transported to the first transport apparatus 2A by the second mounting head 12B. It is a mounting mode that is not mounted. In the asynchronous transfer independent mounting mode, the board transfer and mounting operation of the printed board W transferred to the first transfer apparatus 2A and the board transfer and mounting operation of the printed board W transferred to the second transfer apparatus 2B are completely independent. Therefore, when the throughput is high, but there is a difference in the mounting time MT of the printed circuit board W in both the transport apparatuses 2A and 2B, the prints produced between the first transport apparatus 2A and the second transport apparatus 2B. This is a mounting mode in which there is a difference in the number of substrates W.

<Asynchronous transport alternate mounting mode>
This mounting mode is a kind of single lane flow method, and both the mounting is performed while asynchronously transporting the printed circuit board W transported to the first transport apparatus 2A and the printed circuit board W transported to the second transport apparatus 2B. This is a mounting mode in which mounting is alternately performed on the printed circuit board W transported to the first transport apparatus 2A and the printed circuit board W transported to the second transport apparatus 2B by the heads 12A and 12B. That is, both mounting heads 12A and 12B are used in order from the printed circuit board W (or the printed circuit board W transported to the second transport apparatus 2B) transported to the first transport apparatus 2A previously transported to the substrate stop position Pn. This is the mode to implement. In the asynchronous transport alternate mounting mode, the transport and mounting work of the printed circuit board W transported to the first transport apparatus 2A and the transport and mounting work of the printed circuit board W transported to the second transport apparatus 2B are alternately performed. Even when there is a difference in the mounting time MT of both printed circuit boards W, the printed circuit board W transported to the first transport apparatus 2A and the printed circuit board W transported to the second transport apparatus 2B are alternately maintained while maintaining the time difference. To be produced. Therefore, this is a mounting mode in which there is no difference in the production number between the printed circuit board W transported to the first transport apparatus 2A and the printed circuit board W transported to the second transport apparatus 2B.

  The selection of each mode described above is initially executed on the entire production line by the production line host computer. The host computer determines the mounting mode of the component mounting system 1 based on the printed circuit board W transported to the first transport apparatus 2A and the printed circuit board W transported to the second transport apparatus 2B. Since the procedure for determining the mounting mode by the host computer is described in detail in Japanese Patent Application Laid-Open No. 2012-99654 related to the application previously proposed by the applicant, the description thereof is omitted here. The host computer of the production line performs communication control with the control devices of each device including the control device 20 of the component mounting system 1, and prior to the production of the printed circuit board W, programs and data based on the determined mounting mode. After that, the operation of each device including the mounting mode of the component mounting system 1 is comprehensively controlled.

  Next, the control device 20 of the component mounting system 1 will be described with reference to FIG. The functional configuration illustrated in FIG. 3 functionally illustrates a configuration for mainly determining the mounting mode among the functional configurations of the control device 20.

  Referring to FIG. 3, control device 20 is a unit composed of a microprocessor or the like, and its CPU constitutes main control unit 200. A communication unit 210 constituted by a communication module and a storage unit 220 embodied by a memory device are connected to the bus 21 of the microprocessor constituting the control device 20. In addition, a display unit 30 and an input unit 40 are connected to the control device 20 via the bus 21 as external devices.

  As described above, the main control unit 200 (corresponding to the control unit of the present invention) is composed of a CPU of a microprocessor, and based on various programs stored in the storage unit 220, the first transport device 2A. The second transfer device 2B, the first component mounting device 3A, and the second component mounting device 3B are controlled.

  The communication unit 210 is connected to the microprocessor bus 21 constituting the control device 20, and based on a predetermined protocol for realizing a local area network, the control device 20 and a host computer or other devices provided in the production line Communication control with the control device is performed.

  Next, the storage unit 220 (corresponding to the storage unit of the present invention) stores various programs 221 to 225 to be executed by the main control unit 200 and data 226 to 229 necessary for executing these programs 221 to 225. ing.

  First, the programs 221 to 225 include a synchronous transport program 221, an asynchronous transport program 222, a first lane flow program 223, a second lane flow program 224, and a communication program 225. .

  The synchronous conveyance program 221 is a program for executing the synchronous conveyance entry mounting mode.

  The asynchronous transport program 222 is a program for executing the asynchronous transport independent mounting mode.

  In the following description, both programs are collectively referred to as “dual lane flow programs 211 and 222”.

  Each of the first single lane flow program 223 and the second single lane flow program 224 is a program for executing the asynchronous transport alternate mounting mode (single lane flow method), and the first single lane flow program 223 is the first single lane flow program 223. The second single lane flow program 224 is used at the board stop position Pn of the second transfer apparatus 2B, and is used when mounting electronic components on the printed circuit board W provided at the board stop position Pn of the first transfer apparatus 2A. It is used when electronic components are mounted on the printed board W. The moving procedure of the first mounting head 12A and the second mounting head 12B and the specifications of the data required for the movement differ greatly depending on which lane the printed circuit board W is stopped on. It is.

  However, each of the above-described programs 221 to 224 does not have to be composed of independent program modules, and may be combined so that several program modules can be shared.

  The communication program 225 is a program that controls the operation of the communication unit 210. In this embodiment, this communication program 225 can be used to cause the communication unit 210 to communicate with the host computer in both directions. Of the programs 221 to 224 and the data 226 to 229, data to be shared by the entire production line is provided and updated by the host computer of the production line. When providing or updating these programs and data, the communication program 225 is used to download the programs and data. Further, the communication program 225 is configured to be able to collect information indicating the operation state of each device by communicating with the control devices of the upstream and downstream devices provided in the production line.

  Next, substrate data 226, equipment data 227, operation status determination data 229, operation status data 228, and the like are stored in the storage unit 220 as data. These data are all classified and arranged in a two-dimensional matrix and stored in one or a plurality of table objects, and are associated with each other so that they can be referred to each other as necessary.

  The board data 226 is information relating to the printed board W produced in the component mounting system 1, and specifically, master data relating to the printed board W as a manufacturing target produced on the production line and the produced board data 226. Transaction data concerning the printed circuit board W as an individual product. The master data includes various types of information such as the size, product number, type of mounted component and quantity of mounted component, mounting position, mounting cycle time, and the like for each type of printed circuit board W. The transaction data includes various types of information such as date of production, number of units produced, serial number, pass / fail judgment flag, and the like.

  The equipment data 227 is information related to the component mounting system 1 and includes information necessary for calculating the throughput, such as an average mounting time per unit required for each type of component.

  The driving status data 228 is transaction data during driving, and includes {detection date / time, board ID, current position, progress rate, error code, board waiting time} as items. These data are detected and updated at regular time intervals. The time interval is set to a sufficiently short time, for example, in units of several seconds so that necessary data is always detected at a program switching necessity determination timing described later. {Detection date and time} is an item for storing the date and time when the driving situation data is detected. {Substrate ID} is information for uniquely identifying each substrate being transported. {Current position} is information indicating the lane and the device in which the board exists at the time of data detection. {Progress rate} is information indicating the progress rate of the work at the current position described above. {Error code} is a code that uniquely indicates the type of error caused by an apparatus other than the component mounting system 1. Examples of error codes stored in the operation status data 228 include “recognition failure”, “adsorption error”, and “operator call”. An error code is stored when an error has occurred at the current position of the board at the time of detection. If no error has occurred, the value of {error code} is Null. Alternatively, information indicating that no error has occurred, such as “no abnormality”, may be stored. {Substrate waiting time} is a calculated value of the predicted substrate waiting time when an error occurs during detection. Here, “waiting for the substrate” means a state in which one of the first transport device 2A and the second transport device 2B waits for the printed circuit board W to reach the substrate stop position Pn. The operation status data 228 can uniquely specify all the printed boards W transported to the two lanes based on the value of the {board ID}. In other words, for each lane, a value that can specify the ID of the printed circuit board W, its current position, the progress rate, and the generated error code is stored.

  The operating status determination data 229 is based on the operating status of the component mounting system 1 and the operating status of devices other than the component mounting system 1 arranged on the production line when determining whether or not to switch the program based on the operating status to be described later. Thus, the information is necessary for determining whether or not the switching is necessary. For example, the driving situation determination data 229 includes {error code, standard waiting time} as its item. In {error code}, all error codes used in the production line are registered. {Standard waiting time} is the time required for recovery predicted for each error code. The standard waiting time may be an average value based on past data or may be a statistical mode. Thus, by storing the standard waiting time for each error code, the main control unit 200 of the component mounting system 1 can change the contents of the error code at the time of each operation stored in the operation status data 228 to this operation status. It is possible to specify an error mode by referring to the determination data 229 in association with the {error code}. Therefore, the main control unit 200 can execute a program switching process as described later for each error mode, that is, for each driving situation. Further, the progress rate can be corrected at the time of the next update for each driving situation, and the prediction accuracy of the waiting time for the substrate stored in the driving situation data 228 can be improved.

  Next, the main control unit 200 functionally includes elements such as an operation control unit 231 described below, based on the above-described programs 221 to 225 and various data 226 to 229.

  First, the main control unit 200 includes an operation control unit 231. The operation control unit 231 controls the operations of the first transfer device 2A, the second transfer device 2B, the first component mounting device 3A, and the second component mounting device 3B. The operation control unit 231 controls the operation of the component mounting system 1 in the same manner as a known device by executing the programs 221 to 224 that realize the mounting mode based on the board data 226 and the equipment data 227. Here, the program executed first by the operation control unit 231 is based on the mounting mode determined by the host computer of the production line. Usually, the host computer selects a program (for example, a synchronous transport program) suitable for the printed circuit board W to be produced from the dual lane flow programs 211 and 222, and the component mounting system 1 via the communication function. Instruct each device including to execute the program. In response to the instruction, the operation control unit 231 of the component mounting system 1 executes the corresponding program (synchronous conveyance program 221).

  Next, the main control unit 200 includes an operation state determination unit 232. The operation status determination unit 232 determines not only the operation status of the component mounting system 1 but also the operation status of the upstream device and the downstream device of the component mounting system 1. For example, when waiting for a substrate occurs in one of the first and second transfer devices 2A and 2B, the operating state determination unit 232 detects the cause of the waiting for a substrate by communicating with an upstream device. In addition, when a state in which the mounted printed circuit board W cannot be carried out and is in a standby state (hereinafter referred to as “waiting to carry out”) occurs, the cause of the waiting for carrying out is determined as a downstream device. Communicate with and detect. The driving situation determination unit 232 detects the driving situation at each update timing of the driving situation data 228. The information detected by the driving situation determination unit 232 is stored in the driving situation data 228 as a determination result of the driving situation determination unit 232.

  Next, the main control unit 200 includes a program switching necessity determination unit 233. The switching necessity determination unit 233 is a module that determines whether it is necessary to switch a program executed by the operation control unit 231 based on a preset switching condition. As the determination operation of the determination unit 233, based on the determination result of the driving condition determination unit 232 (that is, data stored in the driving condition data 228), the driving condition (error) registered in the driving condition determination data 229 is determined. And a process for determining whether or not to switch the program for realizing the mounting mode based on the standard waiting time. Details of this determination processing will be described later in more detail based on the flowchart of FIG.

  Next, the main control unit 200 has a program switching unit 234. Based on the determination result of the determination unit 233, the switching unit 234 executes a program executed by the operation control unit 231 for the component mounting apparatus 3B corresponding to the lane (for example, the second transfer apparatus 2B) that is waiting for the board. Switch. Here, in the present embodiment, in the switching unit 234, one component mounting apparatus 3A (3B) is in the mounting interval IT shown in FIG. 2, and the other component mounting apparatus 3B (3A) is waiting for a board. Only when the program is switched.

  Next, the display unit 30 connected to the control device 20 is embodied by a so-called display, and displays various types of information on a liquid crystal display or the like with a graphical user interface (GUI).

  The input unit 40 is configured by a pointing device such as a so-called keyboard and mouse. The input unit 40 may be a GUI displayed by the display unit 30. In addition, an operation key provided on the display of the display unit 30 may be included.

  The display unit 30 and the input unit 40 described above do not have to be externally connected devices, and may be integrated with the main unit of the control device 20.

  Next, the program switching operation by the operating state determination unit 232, the switching necessity determination unit 233, and the program switching unit 234 of the control device 20 will be described with reference to the flowcharts of FIG. 2, FIG. 4, and FIG. Here, in the flowchart of FIG. 4, the dual lane flow program is selected with the production line as the mounting mode, and the operation control unit 231 executes the synchronous transport program 221 or the asynchronous transport program 222 based on this selection. It is assumed that the driving situation determination unit 232 updates the driving situation data 228 for each lane at each time interval.

  First, under the control of the operation control unit 231, each of the transfer devices 2A and 2B transports the printed board W (board loading), and electronic components are mounted on the respective transfer devices 2A and 2B. Here, the operation status determination unit 232 starts the loading of the printed circuit board W in one of the lanes (the first lane in the illustrated example) (step S1), and the other lane (in the illustrated example, the lane). , Second lane), that is, the operation status of the opposite lane is determined (step S2).

  In step S2, when the mounting operation is being performed in the opposite lane, there is no waiting for the board. At this time, the switching necessity determination unit 233 determines that switching of the program is unnecessary, and maintains the current program as it is (step S3). This is because there is no waiting for a board that requires program switching in the opposite lane.

  On the other hand, if it is determined in step S2 that the other transfer device 2A (2B) is waiting for the substrate, the switching necessity determination unit 233 further determines the determination result of the driving state determination unit 232 (that is, the driving state data 228). Based on the data stored in (2), it is determined whether or not the printed circuit board W is in the process of being transported in the transport device 2A (2B) (step S4).

  In step S4, if the printed circuit board W is in the process of being transported to the opposite lane, the switching necessity determination unit 233 determines that the program switching is not necessary, and proceeds to step S3. When the printed circuit board W is in the process of being transported, the board waiting time Wt1 is considered to be considerably short. Therefore, waiting without switching the program does not cause time loss, and the component mounting system 1 This is because the throughput can be maintained high.

  On the other hand, in step S4, when the opposite lane is not transporting the substrate, it is assumed that some error has occurred in the lane and that the substrate is waiting. Therefore, in that case, a switching necessity determination processing subroutine is executed by the function of the switching necessity determination unit 233 (step S5).

  Referring to FIG. 5, in the switching necessity determination processing subroutine of step S5, it is first determined whether or not the currently executed program is a synchronous conveyance program 221 (step S40). When the synchronous transfer program 221 is executed, the program is unconditionally switched to the single lane flow program 224 as shown in FIG.

  Referring to FIG. 6A, when the synchronous transfer program 221 is executed, when a substrate wait occurs in one of the transfer apparatuses 2A and 2B, not only the substrate wait occurs in one lane. Since the entry control is hindered, in order to achieve synchronization, even in the transport device in the opposite lane where the printed circuit board W has arrived, there is a mounting wait state in which the arrived printed circuit board W waits for the start of the mounting operation. May occur. Therefore, in the case where the synchronous transfer program 221 is being executed and the substrate wait occurs in any of the transfer apparatuses 2A and 2B, the single lane flow programs 223 and 224 are always provided as shown in FIG. When the mounting mode is switched by using both of the component mounting apparatuses 3A and 3B, the mounting time MT on the printed circuit board W can be shortened. As a result, the shortening time St is generated and the total time is shortened. It becomes possible. Therefore, in the present embodiment, in step S40 of FIG. 5, when the operation status is that the synchronous conveyance program 221 is being executed, it is determined that it is always necessary to switch to the single lane flow program 224 (step S48). ), The subroutine of step S4 is terminated, and the process returns to the main routine.

  In the present embodiment, even when the single lane flow program 224 is already executed, the processing after step S41 is executed every time step S40 is executed. Therefore, it is determined whether or not the single lane flow program 224 is to be executed every time the mounting work of the printed circuit board W is completed, and this determination is made when returning to the dual lane flow programs 211 and 222 being executed on the production line. It becomes possible to return.

  Next, when it is determined in step S40 in FIG. 5 that the driving situation is that a program other than the synchronous conveyance program 221 is being executed, the switching necessity determination unit 233 performs a time difference calculation processing subroutine (from step S41 to step S41). Processes up to S46) are executed. In this time difference calculation subroutine, the switching necessity determination unit 233 refers to the driving situation determined by the driving situation determination unit 232 (that is, data stored in the driving situation data 228) (step S41), and the driving situation data 228 The standard waiting time is read from the driving condition determination data 229 based on the {error code} value of the corresponding driving condition determination data 229 from the value of {error code} stored in, and the loading is completed at this standard waiting time. To calculate the substrate waiting time Wt1.

  Next, the switching necessity determination unit 233 reads the values of the board data 226 and the equipment data 227, and calculates a shortened time St that is a time shortened when the program is switched to the single lane flow program 223, 224 ( Step S43).

  Further, the switching necessity determination unit 233 calculates the mounting waiting time Wt2 (step S44). Here, the mounting waiting time Wt2 refers to the time required for mounting waiting.

  The mounting waiting time Wt2 is a kind of loss time that can occur due to the substrate waiting time Wt1. That is, when a board wait occurs in one lane, the program is switched to the single lane flow program 224, and electronic components are mounted on the printed circuit board W arriving at the other lane by both mounting heads 12A and 12B. In this lane, the printed circuit board W may arrive during the mounting operation. At that time, one mounting head 12A (12B) cannot mount an electronic component on the printed circuit board W that has arrived in one lane until the mounting operation in the other lane is completed. For this reason, this printed circuit board W waits for mounting on one lane, and a mounting waiting time Wt2 occurs in one lane.

  As shown in FIGS. 7A and 8A, when the program is maintained for dual lane flow, the board waiting time Wt2 occurs in one lane, but the mounting waiting time Wt2 does not occur. On the other hand, as shown in FIG. 7B and FIG. 8B, when the program is switched to the single lane flow, the shortened time St is obtained in the other lane, but the implementation is performed in one lane. There will be a wait. When the mounting waiting time Wt2 due to such mounting waiting occurs, the time becomes a loss time Ls for lowering the operating rate. Therefore, in this embodiment, the mounting waiting time Wt2 is set as the loss time Ls (step S45), and the loss time Ls is used as a parameter for determining whether or not the mounting mode needs to be switched.

  Here, the mounting waiting time Wt2 (that is, the loss time Ls) is also a value depending on the substrate waiting time Wt1 and the shortening time St.

  Case 2-1 shown in FIG. 7 shows a case where the substrate waiting time Wt1 is relatively short. In the case 2-1 of FIG. 7, when the program is switched, the substrate waiting time Wt 1 is relatively short, so the mounting waiting time Wt 2 is relatively long, and the loss time Ls is longer than the shortening time St. Therefore, switching the program for single lane flow is not preferable.

  On the other hand, in the case 2-2 shown in FIG. 8, the substrate waiting time Wt1 is relatively short, and the loss time Ls is longer. In case 2-2 in FIG. 8, when the program is switched, the substrate waiting time Wt1 is relatively long, so the mounting waiting time Wt2 is relatively short, and the loss time Ls is shorter than the shortening time St. Therefore, it is preferable to switch the program to single lane flow.

  Thus, the merit that the shortened time St is obtained by switching the program differs depending on the length of the waiting time Wt1.

  Therefore, in the present embodiment, the shortened time St shortened by switching the mounting mode is compared with the loss time Ls that can be generated by switching the mounting mode, and the shortened time St becomes larger than the loss time Ls. Only the program is to be switched.

  For example, in case 2-1 shown in FIG. 7, the loss time Ls is longer than the shortened time St obtained by switching programs. Therefore, in the present embodiment, the switching necessity determination unit 233 determines that switching to the dual lane flow programs 211 and 222 is not necessary (step S47), and ends the subroutine of step S4. Return to the main routine.

  On the other hand, in case 2-2 shown in FIG. 8, by the determination in step S46, the switching necessity determination unit 233 determines that switching to the single lane flow program 224 is necessary (step S48), and the subroutine of step S4 To return to the main routine.

  The processing for calculating the mounting waiting time Wt2 is expected when the board waiting time Wt1 is first calculated according to the procedure described above, and then the single flow programs 223 and 214 are executed based on the board data 216 and the equipment data 217. The shortening time St is calculated. Next, a time obtained by subtracting the shortening time St from the substrate waiting time Wt1 is set as a mounting waiting time Wt2.

  Next, referring to FIG. 4 again, after the switching necessity determination processing subroutine is completed, the program switching unit 234 determines whether or not switching is necessary based on the determination result of the switching necessity determination unit 233. When the process is shifted to S3 and switching is necessary, the process shifts to a process for executing the program selection process for single lane flow (step S7).

  What should be noted here is that the process of step S7 is executed when one lane is in the mounting interval IT and the other lane is waiting for a board. That is, in step S4, when the printed circuit board W is not in the process of being transported, when the processing of step S5 and subsequent steps is executed, one lane is in the mounting interval IT and the other lane is the board. It is also a waiting state. Therefore, in this embodiment, when shifting to the program selection process for single lane flow, the above-described series of processes are performed when the component mounting apparatuses 3A and 3B are stopped in both lanes, and the program is switched. It is.

  During the period when one lane is in the mounting interval IT and the other lane is waiting for a board, none of the transaction data processed by the operation control unit 231 exists, and special management is required. do not do. Therefore, in this embodiment, it is not necessary to manage data related to electronic components mounted before switching programs, and data processing at the time of program execution before and after switching can be realized easily and reliably, which is easy to implement. There is an advantage of becoming.

  After step S3 or step S7 is executed, the operation control unit 231 controls the mounting work by executing the program selected in any step S3 or S7 (step S8). Thereafter, it is determined whether or not the production of all the printed boards W scheduled to be produced has been completed (step S9). If the production has not been completed, the process proceeds to step S2 and the above-described processing is repeated. If so, the process ends.

  As described above, according to the present embodiment, when the component mounting apparatuses 3A and 3B are stopped in both lanes in order to increase the operating rate according to the actual driving situation and maintain the throughput of the entire system high. The program switching process is executed. Therefore, in this embodiment, even when any program is selected and switched, the program before switching is completed, so it is not necessary to manage data regarding electronic components mounted before switching the program, Data processing at the time of program execution before and after switching can be realized easily and reliably, and the implementation becomes easy. Therefore, not only can the time for the program switching process be shortened, but the probability that a bug will occur in the program is reduced, and there is an advantage that it is easy to construct a highly reliable system.

  Further, in the present embodiment, as shown in FIG. 4, the switching necessity determination unit 233 needs to switch the program every time the mounting interval IT starts in one of the first conveyance device 2A and the second conveyance device 2B. Determine no. For this reason, in this embodiment, every time the mounting interval IT starts, in other words, every time the mounting operation of the printed circuit board W ends, it is determined whether or not the program needs to be switched. For example, a mounting system is provided. When the dual lane flow programs 211 and 222 are being executed on a production line, this determination makes it possible to return the program executed by the operation control unit 230 to the dual lane synchronous transfer program.

  In this embodiment, the switching necessity determination unit 233 is a synchronous conveyance program 221 in which the program executed by the operation control unit 230 simultaneously conveys the printed circuit board W to the first conveyance device 2A and the second conveyance device 2B. In either case, when one of the first transfer device 2A and the second transfer device 2B waits for a substrate, as shown in step S40 of FIG. 5, the program executed by the operation control unit 230 is a single lane. It is determined that it is necessary to switch to the flow program 223, 224. Therefore, in the present embodiment, when the condition is satisfied, the component mounting apparatus corresponding to the lane (the first component mounting apparatus 3A for the first transport apparatus 2A or the second component mounting apparatus 3B for the second transport apparatus 2B). Can be used for the mounting operation of the printed circuit board W transported to the opposite lane, so that the operating rate of the component mounting apparatus corresponding to the lane where the board wait has occurred can be increased.

  Further, in this embodiment, the switching necessity determination unit 233 is an asynchronous conveyance program 222 in which the program executed by the operation control unit 230 individually conveys the printed circuit board W to the first conveyance device 2A and the second conveyance device 2B. In some cases, when one of the first transport device 2A and the second transport device 2B waits for the substrate, which is a state waiting for the arrival of the printed circuit board W, as shown in steps S41 to S46 of FIG. In addition, a time difference calculation process is executed. This time difference calculation processing includes processing for calculating a shortened time that is shortened in the lane in which the mounting operation of the printed circuit board W is executed when the mounting mode is switched to the single lane flow program 223, 224 (step S43), and mounting When the mode is switched to the single-lane flow program 223, 224, when the mounting wait occurs in which the printed circuit board W that has arrived in the lane in which the board wait has occurred waits for the start of the mounting work. When the processing (step S43, S44) for calculating the mounting waiting time Wt2 is compared with the shortened time St and the mounting waiting time Wt2 (that is, the loss time Ls), and the shortened time St is longer than the mounting waiting time Wt2. In addition, the program executed by the operation control unit 230 is switched to the single lane flow program 223, 224. It is necessary to replace, including, and determining process (step S46). For this reason, in the present embodiment, when the asynchronous transfer program 222 is executed, if a waiting for a substrate occurs in any lane, the time difference calculation process (steps S41 to S46) is performed without executing the switching process immediately. ) Is executed first, the time difference calculation process compares the reduced time St obtained by switching the mounting mode with the mounting waiting time Wt2 that can be generated by switching the mounting mode, and determines whether it is appropriate or not. can do. Therefore, it is possible to increase the operating rate and maintain high throughput in a suitable mounting mode while preventing inadvertent switching of the mounting mode.

  That is, when waiting for a board occurs in one of the lanes, when the mounting mode is unconditionally switched to the single lane flow program 223, 224, both components are mounted as shown in FIG. While the devices 3A and 3B are mounting electronic components in the other lane, it is assumed that the printed circuit board W arrives in one lane, and in that case, waiting for mounting occurs in one lane (FIG. 7). (See (A)). The mounting waiting time Wt2 due to this waiting for mounting is a loss time Ls that prolongs the total time required to complete the processing of all the printed circuit boards W as they are. On the other hand, in the present embodiment, when waiting for a board occurs in one lane by the time difference calculation process of FIG. 5, the mounting waiting time Wt2 is calculated (step S44), and this mounting waiting time Wt2 is calculated as a loss time. As Ls (step S45), the difference between the shortened time St obtained by switching the mounting mode and the loss time Ls is calculated (step S46), and it is determined whether or not switching of the mounting mode is necessary based on the comparison balance. Therefore, while avoiding inadvertent switching of the mounting mode, it is possible to increase the operating rate and maintain high throughput in a suitable mounting mode.

  Further, in the present embodiment, the time difference calculation process is a process of calculating the substrate waiting time Wt1 generated in the transfer device 2A (2B) based on the state of the operation state in the transfer device 2A (2B) in which the substrate is waiting. (Step S42), and a process (Step S43) for calculating the mounting waiting time Wt2 based on the calculated board waiting time Wt1. For this reason, in this embodiment, it becomes possible to raise the calculation precision of the board | substrate waiting time Wt1 according to the aspect of various driving | running conditions. That is, as the board waiting time Wt1 becomes longer, the assumed mounting waiting time becomes relatively shorter, so that the board is considerably longer than the mounting cycle time CT required for processing one printed board W. In an operating situation where the waiting time Wt1 is assumed, it is possible to actively switch the mounting mode to the single lane flow program 223, 224 to improve the operating rate. As an aspect of the driving situation, for example, the stocking situation in the upstream apparatus, the presence / absence of an error, etc. are exemplified.

  Further, in the present embodiment, the switching necessity determination unit 233 is configured such that when the operation control unit 230 is executing the single lane flow program 223, 224, when the cause of the board waiting is resolved, the operation control unit It is determined that it is necessary to switch the program executed by 230 to the dual lane flow programs 211 and 222. For this reason, in this embodiment, when the situation that caused the waiting for the substrate is resolved, the single lane flow program 223, 224 can be switched to a program suitable for the dual lane to improve the throughput.

  In the present embodiment, the first component mounting apparatus 3A and the second component mounting apparatus 3B further include a first component supply unit 11A and a second component supply unit 11B that supply electronic components mounted on the printed circuit board W, respectively. ing. The first component supply unit 11A and the second component supply unit 11B are provided with a tape feeder 113 in which electronic components necessary for executing the single lane flow programs 223 and 224 are stocked, respectively. For this reason, in this embodiment, even when the mounting mode is switched from the dual lane flow program 211, 222 to the single lane flow program 223, 224, necessary components are procured from each component supply unit and smoothly mounted. It becomes possible to perform work.

  Further, in the present embodiment, the electronic components required when the single lane flow program 223, 224 is executed are based on the number of mounting points on the printed circuit board W, the component supply form, the necessity of deadline management, and the necessity of permission for user duplication. Selected based on selected requirements. For this reason, in the present embodiment, when the electronic components necessary for executing the single-lane flow program 223, 224 are stocked in each component supply unit, it is possible to stock suitable electronic components suitable for the actual situation of implementation.

  In the present embodiment, the program switching unit 234 selects the dual lane flow programs 211 and 222 in the initial state. For this reason, in this embodiment, a program suitable for dual lanes can be executed first and switched to single lane flow programs 223 and 224 as necessary.

  The present invention is not limited to the embodiment described above, and it goes without saying that various modifications can be made without departing from the scope of the present invention.

  For example, in the above-described embodiment, the driving situation determination unit 232 has been described as an independent module. However, the driving situation determination function by the main control unit 200 does not necessarily require an independent module. It may be realized as a part of the functions of the determination unit 233 and the program switching unit 234.

  When the synchronous transport method is adopted as the dual lane flow program, all the mounting target components are mounted on the printed circuit board W transported to the first transport device 2A by the first mounting head 12A, and the second mounting head 12B. Thus, a mode in which all the mounting target components are mounted on the printed circuit board W transported to the second transport device 2B may be employed. In that case, when there is a difference in the mounting time MT of each printed circuit board W, mounting is performed on both the mounting heads 12A and 12B on the printed circuit board W whose mounting time MT is longer, and the mounting time MT is Throughput can be improved by shortening the mounting cycle time for the longer printed circuit board W. In the embodiment shown in FIG. 1, since the tape feeder 113 that stocks common parts is provided in both lanes, it is possible to easily realize the non-intrusion type synchronous conveyance as described above. .

  In the flowchart of FIG. 4, in step S3 according to the above-described embodiment, the current dual lane flow program 211, 222 is used as it is. However, the present invention is not limited to this, and the driving situation determination unit 232 It may be a mode of switching to a different program based on the determined situation. The determination procedure for switching the program as appropriate according to the driving situation is disclosed in Japanese Patent Application Laid-Open No. 2011-142241 separately proposed by the applicant in addition to the above-mentioned prior application of the applicant. The details are omitted here.

  In the above-described embodiment, the tape feeder 113 in which common electronic components are stocked is provided in each of the first component supply unit 11A and the second component supply unit 11B. However, the tape feeder 113 is not essential. . For example, you may employ | adopt the structure which picks up an electronic component from the component supply part which opposes. In that case, the electronic components of the first component supply unit 11A are picked up by the second mounting head 12B, or the electronic components of the second component supply unit 11B are picked up by the first mounting head 12A, and the electronic components required for both are picked up. Parts can be procured.

  In the above-described embodiment, a host computer is provided to comprehensively control the operation of each device, but this host computer is not essential. For example, a configuration in which each device communicates with each other and does not have a host computer may be employed.

DESCRIPTION OF SYMBOLS 1 Component mounting system 2A 1st conveying apparatus 2B 2nd conveying apparatus 3A 1st component mounting apparatus 3B 2nd component mounting apparatus 11A 1st component supply part 11B 2nd component supply part 12A 1st mounting head 12B 2nd mounting head 20 Control Devices 111, 112, 113 Tape feeder 200 Main control unit 210 Communication unit 220 Storage unit 221 Synchronous transfer program 222 Asynchronous transfer program 223 First lane flow program 224 Second lane flow program 229 Operation status determination data 231 Operation control Unit 232 Operating status determination unit 233 Program switching necessity determination unit 234 Program switching unit IT Mounting interval Ls Loss time Mt Shortening time Pn Substrate stop position W Printed circuit board Wt1 Substrate waiting time Wt2 Mounting waiting time

Claims (9)

Provided for each of the first lane and the second lane for substrate transport parallel to each other, each transports the substrate, and transports the substrate to a preset substrate stop position, and mounts the substrate after the mounting operation. A first transfer device and a second transfer device that carry out the substrate stop position;
A first component mounting device and a second component mounting device capable of mounting an electronic component on any substrate carried by the first transport device and the second transport device to the substrate stop position;
A storage unit for storing information relating to a mounting mode which is a control method of the first component mounting apparatus and the second component mounting apparatus;
In a component mounting system equipped with a control unit,
Information on the mounting mode stored in the storage unit is
Dual for executing a mounting mode in which the first component mounting device and the second component mounting device respectively mount electronic components on both substrates respectively transported by both the first transport device and the second transport device. Lane flow program,
A single that executes a mounting mode in which both the first component mounting device and the second component mounting device mount electronic components on a substrate transported by one of the first transport device and the second transport device. A lane flow program,
The controller is
An operation control unit that controls the operation of the first component mounting apparatus and the second component mounting apparatus by executing any one program stored in the storage unit;
A necessity determination unit for determining whether or not to switch a program executed by the operation control unit based on a preset switching condition;
One of the first component mounting device and the second component mounting device completes one mounting operation when it is determined that the necessity determination unit needs to switch the program executed by the operation control unit. The operation control unit executes when a mounting interval, which is a period from the point of time until the start of the next mounting operation, is in progress, and the other is waiting for a substrate that is waiting for arrival of the substrate. A switching unit that switches the program to a program based on the determination result of the necessity determination unit. The electronic component mounting system according to claim 1,
The electronic component mounting system, wherein the necessity determination unit determines whether or not to switch a program every time the mounting interval starts in either one of the first transfer device and the second transfer device. In the electronic component mounting system according to claim 1 or 2,
In the case where the program executed by the operation control unit is a synchronous lane dual lane flow program for simultaneously transferring substrates to the first transfer device and the second transfer device, Determining that it is necessary to switch the program executed by the operation control unit to the single lane flow program when the substrate wait occurs in one of the first transfer device and the second transfer device. A mounting system for electronic components. The electronic component mounting system according to any one of claims 1 to 3,
The necessity determination unit, when the program executed by the operation control unit is a dual lane flow program of an asynchronous transfer method for individually transferring substrates to the first transfer device and the second transfer device, In any one of the first transfer device and the second transfer device, when the substrate wait occurs, a time difference calculation process is executed.
The time difference calculation process is:
Processing for calculating a shortened time to be shortened in the lane in which the board mounting operation is performed when the mounting mode is switched to the single lane flow program;
When the mounting mode is switched to the single lane flow program, when a mounting wait occurs in which the board that has arrived in the lane where the board wait has occurred waits for the start of mounting work. Processing to calculate time,
Comparing the shortening time and the mounting waiting time, when the shortening time is longer than the mounting waiting time, it is necessary to switch the program executed by the operation control unit to the single lane flow program, And an electronic component mounting system characterized by comprising: The electronic component mounting system according to claim 4,
The storage unit further includes driving situation determination data for storing the standard waiting time of the driving situation in association with each code uniquely indicating the driving situation causing the substrate waiting,
The time difference calculation process is:
Processing to calculate the board waiting time generated in the lane based on the standard waiting time corresponding to the driving situation in the lane in which the board waiting occurs;
Processing for calculating the mounting waiting time based on the calculated board waiting time. An electronic component mounting system comprising: The electronic component mounting system according to claim 4 or 5,
The necessity determination unit, when the operation control unit is executing a single lane flow program, when the cause of the board waiting has been resolved, the program executed by the operation control unit is An electronic component mounting system characterized by determining that it is necessary to switch to a lane flow program. In the electronic component mounting system according to any one of claims 1 to 6,
The first component mounting apparatus and the second component mounting apparatus further include a first component supply unit and a second component supply unit that supply electronic components mounted on the substrate, respectively.
The electronic component mounting system, wherein the first component supply unit and the second component supply unit are stocked with electronic components necessary for executing a single lane flow program, respectively. The electronic component mounting system according to claim 7,
The electronic components required when executing the single lane flow program are selected based on the requirements selected from the number of mounting points on the board, the component supply form, the necessity of deadline management, and the necessity of user duplication permission. An electronic component mounting system characterized by that. In the electronic component mounting system according to any one of claims 1 to 8,
The switching unit selects a program for dual lane flow in an initial state. An electronic component mounting system, wherein:

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