JP2007088023A - Packaging system, packaging method, packaging program, and recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a packaging system, packaging method, packaging program, and recording medium which can prevent the deterioration in quality of products. <P>SOLUTION: At the time of changing the product type, the packaging system 1 delays the time when a substrate to be changed over to a different product type is carried from a substrate supply machine 11 into a printing machine 12 by a predetermined period of time, considering the set-up change time and the processing time in the printing machine 12, mounting machines 13 and 14, and a reflow furnace 15, in order to prevent the substrate which has been through a printing process from standing by in front of the packaging machines 13 and 14 or the reflow furnace 15. Consequently, the substrate carried into the printing machine needs not to stand by in front of each process until it reaches the reflow furnace 15 after leaving the printing machine 12, therefore the time from the printing process to the reflow process can be shortened and the deterioration in quality of products can be prevented. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a mounting system for mounting an electronic component on a substrate, and in particular, printing a solder or an adhesive on the substrate, mounting the electronic component on the printed substrate, and mounting the electronic component on the substrate The present invention relates to a mounting system for mounting a printed circuit board on which electronic components are mounted by firing.

  In general, a process of manufacturing a printed circuit board on which electronic components are mounted includes a process of carrying in a board (hereinafter referred to as a “carrying-in process”), and paste-like solder on a wiring pattern of the board that has been carried in. A process of performing a printing process for printing (hereinafter referred to as “printing process”), a process of performing a mounting process for mounting an electronic component on printed solder (hereinafter referred to as “mounting process”), and an electronic component. A step of performing a reflow process for heating and soldering the mounted substrate to perform soldering (hereinafter referred to as a “reflow process”), and a step of performing a storage process for storing the soldered substrate (hereinafter referred to as “storage”). This is called a “process”. Each process includes a substrate feeder, a printing machine, a mounting machine, a reflow furnace, and a substrate storage machine, and is connected as a continuous line by a conveyor or the like. In such a mounting line, in order to improve production efficiency, each device automatically determines the production type by reading the ID given to the board or sending and receiving electronic data, and automatically switches the production type. A mounting system has been developed (for example, see Patent Document 1).

  The configuration of a conventional mounting system is shown in FIG. The mounting system 2 shown in FIG. 12 includes a substrate feeder 11 that supplies a printed circuit board to a mounting line, a printer 12 that prints solder on a predetermined position on the substrate carried by the substrate feeder 11, and this Mounting machines 13 and 14 for mounting electronic components on a board on which solder is printed by a printing machine 12, a reflow furnace 15 for heating a board on which electronic components are mounted by the mounting machines 13 and 14, and a reflow furnace 15 It is comprised from the board | substrate storage machine 16 which stores the board | substrate with which the solder was joined.

  In the mounting system 2, the substrate supplied from the substrate supply machine 11 is subjected to each process in the order of the printing machine 12, the mounting machines 13 and 14, and the reflow furnace 15. As soon as the processing on the substrate is completed, each device sequentially carries out the substrate to the next process device. The board | substrate carried out from the reflow furnace 15 is stored in the board | substrate storage machine 16, and is shipped as a product.

When switching the production type of the substrate in such a mounting system 2, for example, the setup such as adjustment of the rail width of the conveyor, replacement of the mask, replacement of the solder, replacement of the reel, change of the furnace temperature, change of the program, etc. is changed The adjustment operation (hereinafter referred to as “step change”) is sequentially performed from the upstream side, that is, the substrate feeder 11 side. For example, in the mounting system 2 shown in FIG. 12, when the production is switched from the substrate A to the substrate B, the substrate feeder 11 changes the setting from the time t ₁ when the last substrate A is carried into the line, and the printing machine 12 Then, the changeover is performed from the time _t2 when the printing of the last substrate A is completed. After the completion of such changeover, each apparatus sequentially processes the substrate that has been transferred.

JP 2004-6557 A

However, each device of the mounting system differs in the time required for changeover (hereinafter referred to as “changeover time”) depending on the type of substrate to be produced and the characteristics of the device, so that the post-process is higher than the previous process. In the case of this apparatus, when the changeover time is longer, the substrate processed in the apparatus in the previous process may stand by in front of the apparatus in the next process. Among them, the reflow furnace has the characteristic that the changeover time becomes longer when the temperature inside the furnace must be lowered by changeover. It may not be possible. For example, in FIG. 12, at time t ₄ when the processing of the substrate B in the mounting machine 14 is completed, the reflow oven 15 has not yet completed the changeover, and thus the substrate B has completed the changeover of the reflow oven 15. Until the time t ₅ to be performed, the apparatus waits in the mounting machine 14 or on the line immediately before the reflow furnace 15. On the substrate after the printing process, solder is printed and electronic components are mounted. For this reason, when left for a long time in front of a mounting machine or a reflow furnace, drying of solder, evaporation of flux, adhesion of dust, and the like occur, and as a result, the quality of the product may be deteriorated. Therefore, it is desirable that the mounting process and the reflow process be performed promptly after solder printing.

  Accordingly, the present invention has been made to solve the above-described problems, and an object thereof is to provide a mounting system, a mounting method, a mounting program, and a storage medium that can prevent deterioration in product quality. To do.

  In order to solve the above-described problems, a mounting system according to the present invention includes a printing machine that prints solder on a board, and a mounting that mounts electronic components on the board printed by the printing machine. Mounting system comprising at least a printing machine, a reflow furnace for soldering by melting a solder by heating a substrate on which electronic components are mounted by the mounting machine, and a control device for controlling the time when the printing machine starts printing The control device is based on the time required for the printing process by the printing machine and the mounting process by the mounting machine, and the time required for the setup change accompanying the change of the production type of the substrate of the printing machine, the mounting machine, and the reflow furnace. The start time of the printing process is set.

  In the mounting system, the control device may set the start time so that the substrate reaches the reflow furnace after the reflow furnace is changed. Further, in the above mounting system, the control device prints the last board before the changeover by the printing machine, transports it to the mounting machine, performs the mounting process by the mounting machine, and carries it out to the reflow furnace. After the heat treatment in step 1, the change in the reflow furnace is started and the first substrate after the change in the printing machine is performed at a timing after a predetermined time before the scheduled end time in the reflow furnace. Print processing start time is set so that the substrate reaches the reflow furnace within a predetermined time after the start of the print processing. Also good.

  In the above mounting system, the control device sets each process or changeover end time in each device of the printing press, the mounting machine, and the reflow furnace to each process or changeover start time in each device. The time required for the changeover is added as the time, the start time of each process or changeover in each device is the processing time of the substrate processed by the device last time or the changeover end time, and the device in the previous process of the device is currently processed You may make it the latest time among the end time of the process or changeover of the substrate in the middle, and the start time of the process or changeover of the substrate processed by the apparatus subsequent to the apparatus itself.

  In the above mounting system, the control device sets the start time of the first device immediately upstream of the reflow furnace among the devices of the printing machine, the mounting machine, and the reflow furnace, and ends the changeover in the reflow furnace. The time obtained by subtracting the processing time of the first apparatus and the scheduled change time from the scheduled time, the scheduled end time of the process on the last substrate before the change in the first apparatus, and the time between these times The changeover disclosure time of the second device immediately upstream of the first device is set as the changeover start time of the first device at the set changeover start time of the first device. The time obtained by subtracting the processing time of the second device and the scheduled time for changeover from the scheduled end time at which the changeover of the first device to which time is added ends, and the processing to the last substrate before the changeover in the second device Scheduled end time and those times The change start time at the printing press is set to any of the times between the printing machine processing time and change from the scheduled end time when the changeover at the device immediately downstream from the printing press is completed. It may be set to any one of the time obtained by subtracting the scheduled time, the scheduled end time of processing on the last substrate before the change in the printing press, and the time between those times.

  Further, the mounting method according to the present invention includes a printing step of printing solder on a substrate by a printing machine, a mounting step of mounting electronic components by a mounting machine on the substrate printed by this printing step, A mounting method comprising: a reflow step for soldering by heating a substrate on which electronic components are mounted by this mounting step to melt solder; and a control step for controlling a time at which the printing machine starts printing. The step is based on the time required for the printing process by the printing machine and the mounting process by the mounting machine and the time required for the setup change accompanying the change of the production type of the substrate of the printing machine, the mounting machine and the reflow furnace. A start time is set.

  The mounting program according to the present invention includes a printing step for printing solder on a substrate by a printing machine on a computer, and a mounting for mounting electronic components on the board printed by the printing step by the mounting machine. A mounting program for executing a step, a reflow step for heating and melting a substrate on which an electronic component is mounted by the mounting step, and soldering, and a control step for controlling a time when the printing machine starts printing The control step is based on the time required for the printing process by the printing machine and the mounting process by the mounting machine, and the time required for the setup change accompanying the change of the production type of the substrate of the printing machine, the mounting machine, and the reflow furnace. A start time of processing is set.

  A recording medium according to the present invention is characterized in that the above-described mounting program is recorded. In the present mounting system, mounting method, mounting program, and storage medium, the printing machine is a so-called printing machine or dispenser, and the printing of solder on a substrate is so-called printing or application.

  According to the present invention, based on the time required for the printing process, the mounting process, and the reflow process, and the time required for the adjustment operation associated with the change of the type of the substrate of the printing machine, the mounting machine, and the reflow furnace, the start time of the printing process By setting, the time from the printing process to the reflow process can be shortened.

  In addition, according to the present invention, the start time of the printing process is set so that the first substrate after the changeover in the printing machine is printed at a timing after a time that is a predetermined time before the scheduled changeover end time of the reflow furnace. Therefore, the changeover in the reflow furnace can be completed within the time when the solder quality does not deteriorate below the allowable limit from the start of printing, so that the board reaches the reflow furnace within the predetermined time. Since the processing start time is set, it is possible to start processing of the first substrate after the changeover in the reflow furnace within the time when the solder quality is not deteriorated from the allowable limit from the start of printing. Thereby, the deterioration of the quality of a product can be prevented.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a configuration diagram showing a mounting system according to the present embodiment. In the present embodiment, components equivalent to those of the conventional mounting system described in the background art section are denoted by the same names and reference numerals, and description thereof will be omitted as appropriate.

  The mounting system 1 includes a substrate feeder 11 that supplies a printed circuit board to a line, a printer 12 that prints solder at a predetermined position on the substrate carried by the substrate feeder 11, and solder that is printed by the printer 12. A mounting machine 13 that mounts electronic components on a printed board, a mounting machine 14 that further mounts electronic components on the board on which the electronic components are mounted by the mounting machine 13, and electronic components that are mounted by the mounting machines 13 and 14. A reflow furnace 15 for heating the substrate, a substrate storage 16 for storing the substrate to which the solder is joined by the reflow furnace 15, a substrate feeder 11, a printing machine 12, mounting machines 13 and 14, a reflow furnace 15 and a substrate. And a control device 20 that controls the operation of the storage device 16. Here, the substrate supply machine 11, the printing machine 12, the mounting machines 13 and 14, the reflow furnace 15, the board storage machine 16, and the control device 20 are connected via a known communication line 30.

  As shown in FIG. 2, the printing machine 12 includes a communication unit 12a, a substrate detection unit 12b, a transport unit 12c, a changeover processing unit 12d, and a production processing unit 12e. The communication unit 12a transmits / receives various information to / from each component of the mounting system 1 via a communication line. The board detection unit 12b detects and recognizes the board conveyed to the printing machine 12 via a board recognition camera and sensor. The transport unit 12 c controls the operation of the conveyor based on an instruction from the control device 20 to carry in, fix, and carry out the substrate. The changeover processing unit 12d performs a changeover process based on the recognition result of the substrate by the substrate detection unit 12b and the instruction of the control device 20. The production processing unit 12e performs a printing process on a substrate fixed at a predetermined position inside the printing machine 12 based on the processing results obtained by the substrate detection unit 12b, the conveyance unit 12c, and the conveyance unit 12c.

  The control device 20 includes a communication unit 21, a production result table creation unit 22, a changeover time table creation unit 23, a CT (Cycle Time) table creation unit 24, a time transition table creation unit 25, and a production instruction unit 26. And a storage unit 27. The control device 20 includes an arithmetic device such as a CPU, a storage device such as a memory and an HDD (Hard Disc Drive), and an input that detects input of information from the outside such as a keyboard, a mouse, a pointing device, a button, and a touch panel. Devices, I / F devices that transmit and receive various types of information via known communication lines such as the Internet, LAN (Local Area Network), and WAN (Wide Area Network), CRT (Cathode Ray Tube), LCD (Liquid Crystal) It comprises a computer equipped with a display device such as a display or FED (Field Emission Display) and a program installed in the computer. That is, the hardware device and software cooperate to control the above hardware resources by a program, and the communication unit 21, the production result table creation unit 22, the changeover time table creation unit 23, and the CT table creation unit described above. 24, the time transition table creation unit 25, the production instruction unit 26, and the storage unit 27 are realized. Note that the program may be provided in a state of being recorded on a recording medium such as a flexible disk, a CD-ROM, a DVD-ROM, or a memory card.

  The communication unit 21 includes, for example, a production start time and an end time, a processing time, and a substrate being processed between the substrate supply machine 11, the printing machine 12, the mounting machines 13 and 14, the reflow furnace 15, and the board storage machine 16. Various types of information such as the type of the changeover, the changeover start time and end time, the time required for the changeover, and the contents of the changeover are transmitted and received.

  Based on the information received from the substrate feeder 11, the printing machine 12, the mounting machines 13, 14, the reflow furnace 15, and the board storage machine 16, the production record table creation unit 22 performs the printing machine 12, the mounting machines 13, 14, and the reflow. A table in which past histories such as work time and changeover time in the furnace 15 are recorded in advance, and this is stored in the storage unit 27 as a production result table 27a. For example, as shown in FIG. 3A, the production result table 27a is composed of a table in which the time required for changing the substrates and the production date and time are associated with each other and stored for each apparatus. Further, as shown in FIG. 4A, the table includes a table in which the average time required for processing each substrate and the production date / time are associated with each other and stored for each apparatus. Such a production result table 27a may be updated when information related to processing performed by each device is received.

  The changeover time table creation unit 23 performs statistical processing on the changeover time stored in the production result table 27a, and records the average changeover time in the printing machine 12, the mounting machines 13, 14 and the reflow furnace 15. A table is created in advance and is stored in the storage unit 27b as a changeover time table 27b. For example, as shown in FIG. 3B, the change time table 27b corresponds to the change time for changing the product type from one substrate to another for each device in a matrix. In addition, it consists of a table recorded for each device. Here, the symbol “a” shown in FIG. 3B means the changeover time when the changeover is performed from the substrate of the type B to the substrate of the type A. Such a change time table 27b may be created each time the contents of the production result table 27a are updated. Moreover, you may make it produce in arbitrary time intervals, such as a week or a day unit.

  Note that, as the statistical processing, a simple average may be taken for data of a predetermined period. Further, a weighted average in which recent data is weighted with respect to data of a predetermined period may be taken. Further, only the latest data may be used.

  The CT table creation unit 24 performs statistical processing on the production result table 27a, creates in advance a table in which processing times in the printing machine 12, the mounting machines 13, 14 and the reflow furnace 15 are recorded, and this is used as the CT table 27c. It memorize | stores in the memory | storage part 27a. For example, as shown in FIG. 4B, the CT table 27c is composed of a table in which a substrate type and a processing time are associated with each other and recorded for each apparatus. Such a CT table 27c may be created every time the contents of the production result table 27a are updated. Moreover, you may make it produce in arbitrary time intervals, such as a week or a day unit. Note that, as the statistical processing, statistical processing equivalent to the changeover time table creation unit 23 is performed.

  The production time transition table creating unit 25 is mounted on the basis of the operation status of the substrate feeder 11, the printing machine 12, the mounting machines 13, 14, the reflow furnace 15 and the board storage 16, the change time table 27b and the CT table 27c. A table in which the processing flow of each substrate in each process of the system 1 is recorded is stored in the storage unit 27 as a production time transition table 27d. The production time transition table 27d is, for example, as shown in FIGS. 10 and 11, the production start time and production end time of each board in each device of the mounting system 1, and the change start time and change time in each device. It consists of a table that records the end time and each device in association with each other.

  The production instruction unit 26 issues an instruction for production operation to the substrate feeder 11 based on the production time transition table 27d. Note that the production instruction unit 26 may instruct the printing machine 12, the mounting machines 13 and 14, the reflow furnace 15, and the substrate storage machine 16 to perform production operations.

  The storage unit 27 stores at least the production result table 27a, the changeover time table 27b, the CT table 27c, and the time transition table 27d described above.

  Next, an outline of the operation of the mounting system 1 according to the present embodiment will be described with reference to FIG. In the mounting system 1 shown in FIG. 5, the substrate supplied from the substrate supply machine 11 is subjected to each process in the order of the printing machine 12, the mounting machines 13 and 14, and the reflow furnace 15. As soon as the processing on the substrate is completed, each device sequentially carries out the substrate to the next process device. The board | substrate carried out from the reflow furnace 15 is stored in the board | substrate storage machine 16, and is shipped as a product.

  Such a change of the mounting system 1 is sequentially performed from the substrate supplier 11 side, but after the change of the substrate is completed, the substrate supplier 11 carries a substrate whose type is to be changed from the substrate supplier 11 to the printing machine 12. The time is delayed from the time when the changeover of the printing press 12 is completed by a production delay time including the changeover time and processing time of the printing press 12, the mounting machines 13 and 14, and the reflow furnace 15. After the lapse of the production delay time, the substrate supplied from the substrate supply machine 11 is sequentially carried into the printing machine 12, the mounting machines 13 and 14, and the reflow furnace 15, and the printing process, the mounting process, and the reflow process are performed in each. Finally, it is stored in the substrate storage 16.

For example, as shown in FIG. 5, the substrate is conventionally carried from the substrate supply machine 11 to the printing machine 12 at time t ₃ when the changeover of the printing machine 12 is completed, but in this embodiment, from time t _3. The substrate is loaded at time t ₄ ′ delayed by the production delay time. Thus, the substrate carried into the printing machine at time t ₄ ′ does not have to wait before each process until it reaches the reflow furnace 15 from the printing machine 12. The production delay time is determined based on the production time transition table 27d.

  Next, a substrate carry-in process in the printing machine 12 will be described with reference to FIG. FIG. 6 is a flowchart showing a substrate carry-in process in the printing machine 12.

  First, the board detection unit 12b of the printing machine 12 in the mounting system 1 checks whether or not there is a board at the exit of the board feeder 11 that is a previous process (step S601).

  When there is no substrate at the exit of the substrate feeder 11 (step S601: NO), the printing machine 12 does not carry in the substrate. The fact that there is no substrate at the outlet of the substrate feeder 11 means that the substrate of the substrate feeder 11 is out of stock or the production of the printed circuit board is finished. Therefore, the printing machine 12 does not carry in the substrate.

  When there is a substrate at the outlet of the substrate feeder 11 (step S601: YES), the change processing unit 12d of the printing machine 12 changes the setting based on the detection result of the substrate of the substrate detection unit 12b and the instruction of the control device 20. Is checked (step S602). If the substrate detection unit 12b detects that the type of the substrate to be loaded is different from the type of the substrate that has been subjected to the previous printing process, the change processing unit 12d determines that the change is necessary. Further, upon receiving an instruction to change the setting according to an instruction from the control device 20, the changing process unit 12d determines that the change is necessary.

  When the change of setting is not necessary (step S602: NO), the transport unit 12c of the printing machine 12 carries the substrate at the outlet of the substrate supply machine 11 into the printing machine 12 (step S608). In this case, the production processing unit 12e of the printing machine 12 carries in the printing process on the board after the board is loaded and fixed at a predetermined position inside the printing machine 12.

  On the other hand, if it is necessary to change the setting (step S602: YES), the board detection unit 12b of the printing machine 12 checks whether or not a board exists in the printing machine 12 (step S603). If a substrate is present inside the printing machine 12, the setup cannot be changed. For this reason, the board detection unit 12b checks whether or not a board exists in the printing press 12.

  When a substrate exists in the printer 12 (step S603: NO), the printer 12 waits until the substrate is carried out to the next process apparatus.

  On the other hand, when there is no substrate inside the printing press 12 (step S603: YES), the changeover processing unit 12d of the printing press 12 performs an automatic changeover process (step S604). Here, the automatic change-over process is, for example, adjustment of the width of a conveyor rail that conveys a substrate, backup of history data of a printing process performed in the printing machine 12, and printing on a substrate to be carried next. It means a preparatory operation performed by the printing machine 12 itself for performing a printing process on a substrate to be loaded next, such as loading a program for performing processing and adjusting the arrangement of substrate support pins.

  In addition, the setup change processing unit 12d issues an instruction to the operator to perform manual setup change processing (step S605). Here, manual changeover processing refers to, for example, replacement of solder or adhesive printed on a substrate, replacement or rearrangement of reels or trays for supplying electronic components, replacement of a mask, replacement of a mask, etc. This means a preparatory operation performed by the operator to perform the printing process. The instruction to perform the manual changeover process is given by displaying on the display device, sounding an alarm sound, or lighting the signal tower.

  When the changeover is completed and the board to be loaded next can be manufactured, the production processing unit 12e of the printing machine 12 transmits a confirmation request for confirming whether or not the production can be started to the control device 20. (Step S606). When the production start permission indicating that the production may be started is not received from the control device 20 (step S607: NO), the production processing unit 12e of the printing machine 12 waits until the production start permission is received without starting the production. . The production start permission generation operation will be described later.

  On the other hand, when the production start permission is received from the control device 20 (step S607: YES), the transport unit 12c of the printing press 12 carries the substrate at the exit of the substrate supply device 11 into the printing press 12 (step S608). . After the substrate is carried in and fixed at a predetermined position inside the printing machine 12, the production processing unit 12e of the printing machine 12 performs a printing process on the board. The substrate on which the printing process has been performed is sequentially performed in the mounting machine 13, the mounting machine 14, and the reflow furnace 15.

  Next, the production start permission creation operation by the control device 20 will be described with reference to FIG. First, when the production instruction unit 26 of the control device 20 receives a confirmation request from the printing press 12 (step S701: YES), information on the board existing in the current mounting line and the type of this board via the communication unit 21. (Hereinafter referred to as “substrate information”) is acquired (step S702). This board information is acquired from each device via the communication line 30.

  When the board information is acquired, the production instruction unit 26 confirms the storage unit 27 and confirms whether or not the production time transition table 27d has been created (step S703).

  When the production time transition table 27d has not been created (step S703: NO), the production instruction unit 26 causes the production time transition table creation unit 25 to create the production time transition table 27d (step S707). The operation of creating the production time transition table 27d will be described later.

  When the production time transition table 27d has been created (step S703: YES), the production instruction unit 26 calculates the production delay time T1 based on the production time transition table 27d. The production delay time T1 is obtained by subtracting the time from the present time until the change of the reflow furnace 15 due to the change of the substrate type is completed and the time until the changed board reaches the reflow furnace 15 from the printing press 12. It means the difference with the time.

When the production delay time T1 is greater than 0, that is, when the production delay time T1 has not yet reached 0 (step S705: NO), the production instruction unit 26 does not set the production start permission flag (step S708).
On the other hand, when the production delay time T1 is not greater than 0, that is, when the production delay time T1 becomes 0 (step S705: YES), the production instruction unit 26 sets a production start permission flag (step S706). As a result, the production start permission is transmitted to the printing press 12 and the substrate is carried into the printing press 12.

Next, the creation operation of the production time transition table 27d will be described with reference to FIG. First, when the production time transition table creation unit 25 receives an instruction from the production instruction unit 26 to request creation of the production time transition table 27d (step S801: YES), the production time transition table creation unit 25 is based on the board information already acquired by the production instruction unit 26. The oldest substrate in the mounting line on which processing has been performed, that is, the substrate P _OLD being processed or waiting for processing is identified by the reflow furnace 15 (step S802).

When the board P _OLD is specified, the production time transition table creation unit 25 creates a production time transition table 27d from this board P _OLD to a board P _NEW of a different product type that is newly carried into the mounting line (step S803). How to create a production time transition table 27d from the substrate P _OLD to the substrate P _NEW, it is described with reference to FIG.

  First, the production time transition table creation unit 25 adds the processing time and changeover time in each device in the order of processing of each substrate, and creates a first production time transition table as shown in FIG. 10 (step S901). The first production time transition table created first is obtained by simply adding the processing time and changeover time in each device. In FIG. 10, the first machine means a printing machine. The fifth machine means a reflow furnace. The second to fourth machines mean devices that perform processing on a substrate on which solder is printed, such as a mounting machine.

  For example, in FIG. 10, the substrate C-1 is loaded into the first machine such as a printing machine at 300 seconds, and the processing at the first machine is completed at 350 seconds. Next, it is carried into the second machine at 370 seconds, and the processing of the second machine is completed at 430 seconds. Next, it is carried into the third machine at 430 seconds, and the processing of the third machine is finished at 470 seconds. Next, it is carried into the fourth machine at 480 seconds, and the processing of the fourth machine is finished at 510 seconds. Finally, it is carried into the fifth machine corresponding to the reflow furnace at 1280 seconds, and the processing of the fifth machine is completed at 1300 seconds. Here, the substrate C-1 is finished when the processing of the apparatus of the fourth machine is 510 seconds, but the changeover of the fifth machine, which is a reflow furnace, is finished in 1280 seconds. Therefore, the substrate C-1 has to wait in front of the fifth machine for 770 seconds. In order to prevent such a state, the following calculation is performed.

  When the first production time transition table as described above is created, the production time transition table creation unit 25 performs a calculation based on the first production time transition table (step S902). This calculation is performed according to the following two rules.

  The first rule is that “the end time is the sum of the start time and the cycle time”. Specifically, in the case of a substrate, the production end time is represented by the sum of the production start time and the cycle time. In addition, the changeover end time in each device is represented by the sum of the changeover start time and the changeover time. For example, in FIG. 11, in the case of the first unit processing of the substrate C-1, the production start time is 300 seconds, and the processing time of the substrate C by the first unit is 50 seconds, so the production end time is 350 seconds. . Further, the changeover end time from the substrate B to the substrate C by the fifth machine has a changeover start time of 480 seconds and a changeover time of 800 seconds, so the changeover end time is 1280 seconds.

  The second rule is that “the start time is (the processing end time of the substrate processed last time of its own device), (the processing end time of the substrate currently being processed in the previous process device), (the previous time of the subsequent process device). (The processing start time of the processed substrate) is compared and takes the largest value (note that the time value indicates that the production start time of the first machine such as a printing machine is 0 and the elapsed time thereafter). Is. For example, in FIG. 11, the substrate C-3 of the No. 3 device has a processing end time of 530 seconds for the substrate C-2 processed before the No. 3 device, and the current processing of the No. 2 device which is the device of the previous process. Since the processing end time of the substrate C-3 in the middle is 550 seconds and the processing start time of the substrate C-2 processed before the No. 4 machine which is the device of the subsequent process is 530 seconds, the processing start time is The largest value is 550 seconds.

  Note that only the equipment immediately before the reflow furnace (No. 4 in FIG. 10) does not compare (processing start time of the substrate processed before the post-process apparatus) except for the start of production of the first sheet after the changeover. . At this time, the above calculation is performed according to the rule that “the end time is the sum of the start time and the cycle time”.

  By performing the above-described calculation, the production time transition table creation unit 25 creates a second production time transition table as shown in FIG. 10 (step S903).

  When the second production time transition table is created, the second production time transition table is compared with the first production time transition table to determine whether or not they are the same (step S904).

  When the first production time transition table and the second production time transition table are not the same (step S904: NO), the production time transition table creation unit 25 converts the second production time transition table into the first production time. Replacement with the transition table (step S905), the process returns to step S902, and the above calculation is performed.

  On the other hand, when the first production time transition table and the second production time transition table are the same (step S904: YES), the production time transition table creation unit 25 produces the production time transition table in the storage unit 27. The time transition table 27d is stored.

  By performing the calculation as described above, the production time transition table shown in FIG. 10 is created from the production time transition table shown in FIG. In the production time transition table shown in FIG. 10, a production delay time is set in advance. For example, comparing the two with the substrate C-1, in the case of FIG. 11, since the production delay time is not considered, the production end time of the fourth machine is 510 seconds and the production start time of the fifth machine is 1280 seconds. It will wait for 770 seconds in front of the fifth machine which is a reflow furnace. On the other hand, in the case of FIG. 10, since the production delay time is taken into consideration, the production end time of the fourth machine is 1220 seconds, the production start time of the fifth machine is 1280 seconds, and the fifth machine which is a reflow furnace Wait only 60 seconds in front of

  As described above, according to the present embodiment, the time for carrying in the printing process by loading the board into the printing machine based on the processing time in each process of the mounting line and the changeover time in each device of the mounting line is started. By delaying the time to be performed by the production delay time, the time from the printing process to the reflow process can be shortened. For this reason, when the production type is switched, it is possible to shorten the time that the printed board waits in front of the mounting machine or the reflow furnace, so that the product quality can be prevented from deteriorating.

  In addition, you may make it the printing machine 12 and the reflow furnace 15 have each function of the control apparatus 20 mentioned above. The storage unit 27 may be an independent database that is directly connected to the communication line 30.

  Further, the printing machine 12 may be a dispenser as well as a printing machine that prints solder or adhesive at a predetermined position and shape using a mask or the like. Moreover, you may provide both the printing machine and dispenser which use a mask.

  In the present embodiment, the substrate supply machine 11, the printing machine 12, the mounting machines 13, 14, the reflow furnace 15 and the board storage machine 16 constitute a mounting line, but the configuration of the mounting line is as described above. However, it can be set freely according to the type of substrate to be manufactured.

  The control device 20 prints the last board before the changeover by the printing machine 12, transports it to the mounting machine 13, performs mounting processing by the mounting machine 13, transports it to the mounting machine 14, and The mounting process is performed, and further, it is carried out to the reflow furnace 15, and after the heating process in the reflow furnace 15 is completed, the changeover in the reflow furnace 15 is started. Further, the control device 20 obtains a scheduled end time at which the changeover is completed from the scheduled changeover time in the reflow furnace 15, and a predetermined time from this scheduled end time (if the printed solder is left untreated, the quality is If the quality falls below the allowable limit value, the process in the reflow furnace will be adversely affected (the time until the quality reaches the allowable limit value). The print processing start time is set so that the first substrate is printed after the replacement. That is, after the start of printing, before the solder quality is reduced to the allowable limit value, the changeover in the reflow furnace 15 is completed. Then, the control device 20 starts the processing in the mounting machines 13 and 14 so that the substrate reaches the reflow furnace 15 within a predetermined time after the printing processing on the first substrate after the change in the printing machine 12 is started. Set the time. For this reason, the timing at which the processing in the reflow furnace 15 is started is the changeover in the printing machine 12 regardless of whether the timing at which the substrate reaches the reflow furnace 15 is earlier or later than the changeover end time in the reflow furnace 15. After the start of the printing process on the first substrate, it can be within a predetermined time. Thereby, the deterioration of the quality of a product can be prevented.

  Further, the control device 20 reflows the changeover start time of the mounting machine 14 which is the first apparatus immediately upstream of the reflow furnace 15 among the printing machine 12, the mounting machines 13 and 14, and the reflow furnace 15. The time when the processing time of the mounting machine 14 and the scheduled time for changing are subtracted from the scheduled end time at which the changeover in the furnace 15 is completed, or the end of the processing for the last board before the changeover in the mounting machine 14 The mounting changer disclosure time of the mounting machine 13 that is the second device immediately upstream of the mounting machine 14 is set to the time or the time between them. To the last board before the change in the mounting machine 13 or the time obtained by subtracting the processing time and the expected change time of the mounting machine 13 from the scheduled end time when the change of the mounting machine 14 is completed. Of processing Ryo or scheduled time, or to set up in the meantime of time. Similarly, the changeover start time in the printing machine 12 is set to the processing time and changeover schedule of the printing machine 12 from the scheduled end time when the changeover in the mounting machine 13 that is immediately downstream of the printing machine 12 is completed. The time is set to the time obtained by subtracting the time, the scheduled end time of processing on the last substrate before the change in the printing machine 12, or the time in between. As a result, the first board after the setup change in the printing machine 12 is printed by the printing machine 12, transported to the mounting machine 13 after the setup change, and the mounting process in the mounting machine 13 is performed. It is transported to the mounting machine 14 that has been finished, the mounting process is performed in the mounting machine 14, and it is possible to carry it out to the reflow furnace 15 after the changeover.

It is a figure which shows the structure of the mounting system concerning this invention. 2 is a block diagram illustrating a configuration of a printing machine 12. FIG. It is a figure which shows typically a (a) production results table and a (b) changeover table. It is a figure which shows typically (a) production results table and (b) CT table. It is a figure explaining the outline | summary of operation | movement of the mounting system concerning this invention. It is a flowchart which shows the board | substrate carrying-in process in a printing machine. It is a flowchart which shows production start permission operation | movement. It is a flowchart which shows the operation | movement of the whole production time transition table preparation part. It is a flowchart which shows the production operation of a production time transition table. It is a figure which shows the production time transition table which considered the delay. It is a figure which shows the production time transition table which does not consider delay. It is a figure which shows the structure of the conventional mounting system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 2 ... Mounting system, 11 ... Substrate feeder, 12 ... Printing machine, 12a ... Communication part, 12b ... Substrate detection part, 12c ... Conveyance part, 12d ... Changeover processing part, 12e ... Production processing part, 13, 14 DESCRIPTION OF SYMBOLS ... Mounting machine, 15 ... Reflow furnace, 16 ... Substrate housing machine, 20 ... Control device, 21 ... Communication part, 22 ... Production performance table creation part, 23 ... Changeover time table creation part, 24 ... CT table creation part, 25 ... Production time transition table creation unit, 26 ... Production instruction unit, 27 ... Storage unit, 27a ... Production result table, 27b ... Changeover time table, 27c ... CT table, 27d ... Production time transition table, 30 ... Communication line.

Claims (7)

A printing machine for printing solder on a substrate;
A mounting machine for mounting electronic components on a substrate printed by this printing machine;
A reflow furnace for soldering by heating the substrate on which electronic components are mounted by this mounting machine and melting the solder;
A mounting system comprising at least a control device for controlling a time at which the printing machine starts printing,
The control device includes a time required for a printing process by the printing machine and a mounting process by the mounting machine, and a time required for changeover associated with switching of the production types of the substrates of the printing machine, the mounting machine, and the reflow furnace, The mounting system is characterized in that the print processing start time is set based on the above. In the control device, the last board before the changeover is printed by the printing machine, transported to the mounting machine, mounted by the mounting machine, carried out to the reflow furnace, After the heat treatment is completed, the changeover in the reflow furnace is started, and the first substrate after the changeover in the printing machine is performed at a timing after a predetermined time from the scheduled end time when the changeover in the reflow furnace is completed. Setting the start time of the printing process so as to print, and setting the start time of the process in the mounting machine so that the substrate reaches the reflow furnace within the predetermined time after the start of the printing process. The mounting system according to claim 1. The controller is
The end time of each process or changeover in each device of the printing machine, the mounting machine, and the reflow furnace is set to the start time of each process or changeover in each device. The time required for the changeover is added to the time,
The start time of each process or changeover in each apparatus is the end time of the process or changeover of the substrate previously processed by the own apparatus, and the end of the process or changeover of the substrate currently processed by the apparatus in the previous process of the own apparatus. The mounting system according to claim 1 or 2, characterized in that the latest time is selected among the time and the start time of substrate processing or changeover performed by a device subsequent to the device itself. The control device ends the changeover start time of the first device immediately upstream of the reflow furnace of the printing machine, the mounting machine, and the reflow furnace, and the changeover in the reflow furnace is completed. The time obtained by subtracting the processing time and the planned change time of the first apparatus from the scheduled end time, the scheduled end time of the process to the last substrate before the change in the first apparatus, and the time Set to one of the times
The changeover disclosure time of the second device immediately upstream of the first device is obtained by adding the scheduled changeover time of the first device to the set changeover start time of the first device. The time obtained by subtracting the processing time of the second apparatus and the scheduled change time from the scheduled end time when the change of the apparatus 1 is completed, and the expected end time of the process on the last substrate before the change in the second apparatus. , And any of the times between them,
A time obtained by subtracting the processing time of the printing press and the planned change time from the scheduled end time at which the change in the device immediately downstream from the printing press is completed, 4. The method according to claim 1, wherein the time is set to any one of a scheduled end time of processing on the last substrate before the changeover in the machine and a time between these times. 5. Implementation system. A printing step of printing solder on a substrate by a printing machine;
A mounting step of mounting an electronic component by a mounting machine on a substrate printed by this printing step;
A reflow step of soldering by melting the solder by heating the substrate on which the electronic component is mounted by this mounting step;
A control method for controlling a time at which the printing machine starts printing,
The control step includes a time required for a printing process by the printing machine and a mounting process by the mounting machine, and a time required for changeover associated with switching of the production types of the substrates of the printing machine, the mounting machine, and the reflow furnace; A start method of the print processing is set based on the above. On the computer,
A printing step of printing solder on a substrate by a printing machine;
A mounting step of mounting an electronic component by a mounting machine on a substrate printed by this printing step;
A reflow step of soldering by melting the solder by heating the substrate on which the electronic component is mounted by this mounting step;
An implementation program for executing a control step for controlling a time when the printing press starts printing,
The control step includes a time required for a printing process by the printing machine and a mounting process by the mounting machine, and a time required for changeover associated with switching of the production types of the substrates of the printing machine, the mounting machine, and the reflow furnace; An implementation program that sets a start time of the printing process based on the above. The recording medium which recorded the mounting program of Claim 6.

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