JP2011204824A - Method of component replenishment notification - Google Patents

Abstract

PROBLEM TO BE SOLVED: To give a notification of component shortage in consideration of arrangement, with respect to the replenishment of circuit component required for mounting on a substrate.SOLUTION: Based on a production schedule that defines the quantity of substrates per product type to be produced and the production sequence for the current and future production, the expected time of component shortage is calculated concerning each feeder 26 attached to a component supply section 6. Then, if the expected time of component shortage is later than the finish time of a production job in progress for production, and further the expected time notified as a component shortage time is before the finish time of the production job for the type of substrate in progress for production, judgment is made as to whether the type of the circuit component stored in the feeder 26 is to be used in the subsequent production job. If the foregoing component is to be used, component shortage is notified in the implementation stage of the production job of the types of substrates in progress for production.

Description

  The present invention relates to a method for guiding an operator on a display or the like to supply circuit components necessary for mounting on a substrate.

  Electronic circuit assembly is performed by mounting circuit components, such as electronic components, on the surface of the board on which paste solder is printed in a component mounting machine, and solidifying the solder by heating the circuit component mounted substrate in a reflow oven. This is done by firmly fixing the circuit components to the board. The component mounting machine includes a plurality of feeders that constitute a component supply device. The feeder includes a tape feeder in which a plurality of electronic components wrapped in a tape are wound around a reel, and a tray in which a plurality of electronic components are arranged in a tray. There is a feeder. The circuit components are supplied as a predetermined number of aggregates by these feeders, and the circuit components are taken out one by one from the feeder and mounted on the surface of the substrate. As described above, the feeder includes a predetermined number of circuit components. However, if the feeder becomes insufficient due to use, it must be replenished. In many cases, a plurality of types of circuit components are supplied to one board, and even if one type of circuit components in the circuit board runs out of components, the mounting operation is stopped. For this reason, it is very important to guide an operator or the like to inform the operator of the supply of circuit components necessary for mounting on the board.

  Therefore, a system for efficiently replenishing circuit components has been conceived conventionally. For example, according to Patent Document 1, a component outage time is predicted from the remaining number of each circuit component, and a replenishment schedule is created based on the predicted time, It is described that the prepared supply schedule is notified to the operator. This is not informing the parts out-of-life time as it is, but in the form of a replenishment schedule, for example, useful information considering the concentration of parts out, preparation work for replenishment work, replenishment form of parts, etc. to the operator. Inform.

JP 2004-134691 A

  However, in the circuit component replenishment system described in Patent Document 1, since the setup change accompanying the change of the board type is not considered, the remaining production possible time (expected time of parts outage) is set even for the circuit parts that are not used after the setup change. If it falls below the value (parts-out notice time), parts-out notice will be given, and when parts are about to be replaced, extra parts will be replenished for circuit parts that are not used immediately. In addition, since circuit components that need component replenishment are not known immediately after the setup change, replenishment may be delayed. For this reason, there is a problem in that accurate parts replenishment cannot be performed at a production site where many setup changes are performed in which a variety of products are produced in small quantities.

  The present invention has been made in view of the above-described conventional problems, and is intended to accurately notify the notice of component breakage in consideration of setup change when supplying circuit components necessary for mounting on a board.

  In order to solve the above-described problem, the structural feature of the invention according to claim 1 is that a substrate transport device that transports a substrate in the transport direction and carries it in and out of the mounting position, and accommodates different types of circuit components, respectively. A component supply unit equipped with a component supply unit on which a plurality of feeders to be mounted are mounted, a component transfer device that collects circuit components from each feeder and mounts them on the substrate transported to the mounting position, and a substrate on each substrate Based on the mounting time per board, the number of distinct types of circuit components mounted on each board, and the number of circuit components remaining in each feeder mounted on the component supply unit, each component is predicted to run out. In a component supply method using a component mounting system that includes a component supply management device that calculates a time and notifies a component supply management device that notifies a component outage at a notification time prior to the expected component outage time, the component supply management device includes: Based on the production schedule that determines the number of boards to be produced and the order of production in the future, the estimated time for out of parts is calculated for each feeder installed in the parts supply unit, and the expected time for out of parts is currently produced. The circuit components of the type accommodated in the feeder that is later than the end time of the production job in the middle and the notice time for notifying the predicted time is before the end time of the production job of the board type currently being produced are It is determined whether it is used in a production job, and when it is used, a notice is given that the parts are out of use at the stage of execution of the production job for the board type currently being produced.

  The structural feature of the invention according to claim 2 is that, according to claim 1, when a circuit component of a type accommodated in the feeder is used in a current production job, the following is based on the production schedule. When used in a production job, the advance notice of part shortage is performed, and when not used in the next production job, the notice of part shortage is not performed.

  The structural feature of the invention according to claim 3 is that, in claim 1, the type of circuit component housed in the feeder is not used in a current production job, but is mounted in the component supply unit. In some cases, based on the production schedule, when it is used in the next production job or used in the next production job, the advance notice of the parts out is performed.

  According to the first aspect of the present invention, the expected part cut-off time is specifically calculated for each feeder, and is calculated based on the production number and the production order of the present and future board types represented in the production schedule. Compare the estimated time of parts out and the production end time of the production job currently being produced. Then, when the estimated time of component shortage is later than the end time of the production job currently being produced, it is necessary to supply the circuit components only when used in the subsequent production jobs. Therefore, it is determined whether or not a circuit component of a type accommodated in a feeder whose notice time for notifying the expected time of parts shortage is before the end time of the production job of the board type currently being produced is used in subsequent production jobs. When it is determined and used, a part-out notice is given at the stage of execution of a production job for the board type currently being produced, and no part-out notice is given when it is not used in subsequent production jobs. In this way, based on the production number and production order of the current and future board types shown in the production schedule, it is determined whether or not to notify the parts at the stage of the production job of the board type currently being produced. Since it is determined and a part-out notice is made, the necessary part-out notice can be appropriately performed when necessary, and a smooth and smooth supply of circuit component types can be achieved.

  According to the second aspect of the present invention, when the production of the board type currently being produced is continued, even if the feeder containing the circuit parts corresponds to the notice time when the notice of parts shortage is made, the expected time of parts shortage Is later than the end time of the production job for the board type currently being produced (in this case, the remaining number of circuit component types satisfies the number used in the production job for the board type currently being produced), and When the type of the circuit component stored in the feeder is not used in the production job for the substrate type to be produced next, the component is not notified of running out. As a result, it is possible to prevent extra types of circuit components that are not immediately used in production jobs from being replenished. In addition, when the type of the circuit component stored in the feeder is used in the production job for the next board type to be produced, it is necessary to supply the circuit part. For example, it is mounted on each board of the next production job. By changing the number of circuit components to be changed and the like, the predicted time of component failure is changed and a notification of component failure is made, thereby making it possible to smoothly supply the types of circuit components.

  According to the invention of claim 3, the type of circuit component housed in the feeder that is currently mounted in the component supply unit is not used in the production job of the board type currently being produced, but is produced one after another. Is used for a production job of a certain board type, the expected time of part shortage is calculated and a part shortage notice is made. As a result, even if a circuit component of a type used in a production job for the next or subsequent production of a board type becomes a part-out condition immediately after the start of production, the part-out notice is displayed as the board type currently being produced. Therefore, it is possible to reliably and smoothly supply the circuit components in the next or successive production jobs.

The figure which shows the outline | summary of the components mounting apparatus which implements the components replenishment guide method which concerns on this invention. The flowchart which shows the procedure of the component replenishment guidance method about the circuit component currently used by the production job. The figure which shows the state which performs parts short notice about the circuit components currently used by the production job. The figure which shows the example of the production schedule of a job. The figure showing the example of parts replenishment guidance. The flowchart in case the production schedule of a job is changed. The flowchart which shows the procedure of the component replenishment guidance method about the circuit component which has been mounted | worn by the component supply apparatus, but is not used by the present production job. The figure which shows the state which performs a component run-out notice about the circuit component which has been mounted | worn by the component supply apparatus, but is not used by the present production job.

  Embodiments in which the component replenishment guide method according to the present invention is implemented in a component mounting system including a component mounting device that mounts circuit components on a substrate and a component supply management device that manages the supply of circuit components to the component mounting device will be described below. Will be described below with reference to the drawings.

  As shown in FIG. 1, the component mounting apparatus 2 according to the embodiment includes a substrate transfer device 4, a component supply device 6 as a component supply unit, a component transfer device 8, a substrate recognition camera 10, and a component recognition camera 12. ing. The component mounting device 2 is provided with a control device 14 that controls the operation thereof.

  The substrate transfer device 4 is of a so-called double conveyor type in which the substrate S is transferred in the X-axis direction, and the first transfer device 16 and the second transfer device 18 are arranged side by side. The first transport device 16 (second transport device 18) has a pair of guide rails 22 (24) arranged parallel to each other on the base 20 so as to face each other in parallel, and the guide rails 22 (24) respectively. A pair of conveyor belts (not shown) for supporting and transporting the substrate S to be guided are arranged in parallel so as to face each other. The substrate transport device 4 is provided with a clamp device (not shown) that pushes up and clamps the substrate S transported to a predetermined stop position, and the substrate S is mounted by the clamp device (circuit components are mounted on the substrate S). Position).

  The component supply device 6 is configured by arranging a plurality of cassette-type feeders 26 in parallel on the side portion (front side in FIG. 1) of the substrate transfer device 4. The component supply device 6 has a device table 27 for arranging and arranging the cassette type feeders 26, and the device table 27 is provided with a plurality of slots (not shown) for attaching the cassette type feeders 26. Yes. The positional relationship between these slots is recorded in advance in a component supply management device 32 that manages the supply of circuit components. The cassette type feeder 26 is attached to any one of the plurality of slots, so that the cassette feeder 26 is disposed at a predetermined position in the component supply device 6, that is, a position recognized by the component supply management device 32. The cassette feeder 26 includes a case part (not shown) that is detachably attached to the slot, a supply reel 28 provided at the rear part of the case part, and a component take-out part 30 provided at the tip of the case part. An elongated tape (not shown) in which circuit parts (for example, electronic parts, shield parts, etc.) are enclosed at a predetermined pitch is wound and held on the supply reel 28, and this tape is pulled out at a predetermined pitch by a sprocket (not shown). The circuit components are released from the encapsulated state and are sequentially fed into the component extraction unit 30. In the component supply management device 32, a correspondence relationship between the ID and the type and quantity of the enclosed circuit component is registered in advance. A code indicating an ID, a part number, the number of enclosures, and the like is attached to the cassette type feeder 26, and the data of this code is read by a reader provided in each slot and transmitted as a signal to the parts supply management device 32. The The component supply management device 32 controls the supply of circuit components by grasping the board type, the order, the number of productions, etc. in the job production schedule. In this way, smooth supply of circuit components is achieved by using the transmitted circuit component data in each slot and the circuit component data used for the type of board to be produced.

  In addition, the component supply management device 32 is provided with an operation device 36 having a display 34 for performing replenishment guidance for circuit components mounted on the board S.

  A substrate recognition camera 10 attached to a component transfer device 8 to be described later is provided so as to be disposed above the component supply device 6. The substrate recognition camera 10 is a CCD camera, and recognizes the position of the substrate S conveyed by the substrate conveyance device 4 and clamped at the mounting position from a mark (not shown) provided on the substrate S. This is to cause a correction operation to accurately mount the component P at the upper position.

  Also, a component recognition camera 12 is provided between the component supply device 6 and the substrate transport device 4 as shown in FIG. This component recognition camera 12 is a CCD camera and has an optical axis parallel to the Z direction which is a vertical direction. This component recognition camera 12 is used to determine whether the collected posture of the circuit component is acceptable and whether the circuit component itself is acceptable.

  Above the substrate transfer device 4, a slide 38 that is elongated in the Y direction perpendicular to the X direction, which is the transfer direction of the substrate S, is guided and supported by a pair of unillustrated fixed rails extending in the X direction. The movement of the slide 38 in the X direction is driven by an unillustrated X direction servo motor via a ball screw. On one side of the slide 38, a moving table 40 to which the board recognition camera 10 and the component transfer device 8 are attached is guided and supported so as to be movable in the Y direction. It is driven by a servo motor.

  The component transfer device 8 is a support base (not shown) that is detachably attached to the movable table 40, and is guided and supported by the support base so as to be movable up and down in the Z direction perpendicular to the X direction and the Y direction via a ball screw. A mounting head 42 whose elevation is controlled by a Z-direction servo motor (not shown), a cylindrical suction nozzle (not shown) that protrudes downward from the mounting head 42 and holds a circuit component at the lower end thereof; Consists of. A plurality of (for example, four) cylindrical nozzle holders (not shown) are attached to the mounting head 42 so as to be rotatable about an axis. The suction nozzle that can reciprocate in the vertical direction is attached to the nozzle holder, and each suction nozzle is biased upward by a compression spring (not shown). The nozzle holder is intermittently rotated by a motor (not shown) so that the suction nozzle stops at a predetermined position. Each suction nozzle is supplied with a negative pressure from a suction nozzle driving device (not shown) via a spindle (not shown). Thus, each suction nozzle sucks each circuit component taken out by the component take-out unit 30 in the component supply device 6 at the tip.

  The control device 14 controls the drive of the conveyor belt and the clamp device in the substrate transfer device 4, drives the component transfer device 8, and picks up and images the substrate recognition camera 10 and the component recognition camera 12. A mounting system control device 46 that controls processing and the above-described component supply management device 32 that manages the supply of circuit components by grasping the types of boards to be produced and the like are provided. The control device 14 also controls delivery from a not-shown printing press on the upstream side of the component mounting device 2 and delivery to a not-shown reflow device on the downstream side.

  Further, the control device 14 transmits information on the correspondence between the slot position and the circuit component type in the component supply device 6 to the component transfer device 8, and the transmitted component transfer device 8 receives the received information. Based on this, the control command of the cassette type feeder 26 is transmitted, and the circuit component is mounted on the substrate S. When the number of circuit components enclosed in the cassette type feeder 26 is insufficient due to the progress of the mounting, the component will be cut out and another cassette type feeder 26 in which circuit components to be described in detail later are newly stored is supplied. Parts are replenished by connecting a new tape to the tape that is switched or the parts are cut.

  In addition, production information is transmitted from the component transfer device 8 to the control device 14. This production information includes information on the number of substrates for which movement of electronic components has been completed and information on the number of supplied circuit components. From the production information data received by the control device 14 and the enclosing number of types of circuit components already known, the component supply management device 32 determines a replenishment guide for component replenishment, and the component transfer device 8 and It is configured to transmit to the operating device 36.

  The operation of the component mounting apparatus 2 configured as described above will be described below with reference to the drawings. First, as shown in FIG. 1, the substrate S on which the solder is printed on the surface by the upstream printing press is placed at a predetermined stop position by the conveyor belt of the first transport device 16 or the second transport device 18 from outside the device. It is conveyed to. In the stop position, the substrate S is clamped by the clamping device, and the substrate S is raised to the mounting position in a clamped state. The substrate S is held at the mounting position, and the circuit component is mounted by the component transfer device 8. The mounting of the circuit component is performed according to a mounting program incorporated in the mounting system control device 46. The component supply device 6 sequentially takes out the circuit components scheduled to be mounted to the component extraction unit 30 and positions them. The component transfer device 8 moves the mounting head 42 to the component extraction unit 30 from which the circuit component is extracted, and adsorbs the circuit component to one of the adsorption nozzles that intermittently rotates. Subsequently, the circuit components are sequentially moved to the component extraction unit 30 where the circuit components are extracted, and necessary circuit components are adsorbed by the adsorption nozzle. Next, the mounting head 42 is positioned above the component recognition camera 12, and each circuit component is imaged by the component recognition camera 12, so that the suction posture of each circuit component sucked by the suction nozzle is determined. Judge the quality. For example, when the suction posture is poor but mounting is possible, the mounting position on the substrate S is corrected during mounting. Next, the component transfer device 8 that has attracted the circuit components is moved above the substrate S, and the reference mark provided on the surface of the substrate S is recognized by the substrate recognition camera 10 provided in parallel with the mounting head 42. Then, the mounting position on the substrate S is positioned from the recognized reference mark, and the circuit component is mounted on the surface of the substrate S. Other circuit components to be mounted are similarly mounted on the board. The substrate S thus mounted is lowered from the mounting position and transferred to the first transport device 16 (second transport device 18), and the first transport device 16 (second transport device 18) moves outside the apparatus. It is carried out to.

  As described above, the circuit component supplied by the component supply device 6 is mounted on the surface of the substrate S. However, when the circuit component held in the cassette type feeder 26 is cut out due to the progress of mounting, component replenishment is performed. Is described below.

  First, as a first aspect, for example, when the cassette type feeder 26 encapsulated for a certain type of circuit component is mounted on the component mounting apparatus 2, when the component is expected to run out, the same type is used. Another cassette type feeder 26 in which the circuit parts are enclosed is previously mounted in another empty slot. When the cassette-type feeder 26 that is expected to run out of parts actually runs out of parts, the cassette-type feeder 26 is switched to another previously installed cassette-type feeder 26 to supply circuit components (so-called next device). As a result, it is possible to prevent work stoppage due to parts being cut.

  Further, as a second aspect, for example, the reel is removed from the cassette type feeder 26 where parts are likely to run out, and the end portion of the tape unwound from the reel and the tape wound around a new reel prepared in advance. And the new reel is mounted on the cassette type feeder 26 (so-called splicing). In this way, a new circuit component is supplied to the component mounting apparatus 2.

  Next, a first component replenishment guide method for circuit components in the component mounting system (component mounting device 2 and component supply management device 32) having the above-described configuration will be described based on the flowchart shown in FIG. First, as a premise, a mounting program for mounting circuit components on a board is executed, and the component supply program starts in the component supply management device 32 in accordance with the progress of the mounting program (step 101 (hereinafter abbreviated as “S101”). )). The first replenishment guidance method is a method for replenishing circuit components used for the board type produced in the current production job (see FIG. 3).

  Next, the parts supply management device 32 specifies a job production schedule (S102). In the production schedule, for example, as shown in FIG. 4, the production order of the substrate types, the target production number, the name of the line to be produced, the job name, and the like are recorded.

  Next, the component supply management device 32 specifies the component shortage notice time (S103). For example, it is set to notify in advance 30 minutes before the expected time of parts shortage described later.

Next, the component supply management device 32 calculates an estimated component out time (component out time) for each cassette type feeder 26 (S104). The expected part cut time is a time when a part cut is expected to occur when production is continued, and is calculated by the following equation, for example. The current time is, for example, 14:35.
Expected time of parts outage = number of remaining parts / number of parts used per sheet x cycle time (Equation 1)
Expected part-out time = Current time + Expected part-out time ... (Formula 2)

For example, when the remaining number of circuit parts held in the cassette-type feeder 26 is 80, the number of components used per board is 1, and the cycle time required for mounting one board is 30 seconds. From (Equation 1),
Expected part cut time = 80/1 × 30 = 2400 (seconds), that is, 40 minutes.
And since the current time is 14:35,
Expected part-out time = 14: 35 + 40 minutes = 15: 15.

  The cycle time is obtained from the fastest value required for mounting circuit components per board, the average of actually measured values, an approximate curve, or the like. Moreover, the calculation of the estimated time of parts shortage is performed, for example, every 5 minutes for each cassette type feeder 26 arranged in each slot.

  Next, the component supply management device 32 determines whether or not each circuit component used for mounting is subject to a component outage notice (S105). In this case, it is determined whether or not the time when the calculation operation is performed is 30 minutes before the notice time set in step 103, based on the estimated time of part cut calculated in step 104.

  If it is determined in step 105 that the part is not subject to the part-out notice, the part-out notice is not notified (S111). For example, in the parts replenishment guide shown in FIG. 5, “slot 1-10, part code 3216R” did not fall within the part-out notice time when the calculation work was performed at 13:40. It wasn't done. Then, at the time of 13:50, it falls within the part outage notice time, the parts out notice is made, and parts are replenished.

  If it is determined in step 105 that the object is a part-out notice, the process proceeds to step 106.

Next, the component supply management device 32 determines whether the remaining number of target circuit components is sufficient or insufficient in the production job currently being produced (S106).
The end time of the current production job is compared with the estimated time of part shortage, and if the end time of the current production job is later than the expected time of part shortage, it is determined that it is insufficient.

  The component supply management device 32 performs a component run-out notice when the circuit components are insufficient (S107). For example, in FIG. 5, “slot 1-13, part code 0603R” indicates that, as shown in FIG. For example, it is calculated as 14:10, the end time of job A is 14:50, and the end time of job A is later than the expected time of parts shortage, so the parts supply management device 32 determines that it is insufficient. The part-out notice is given at 13:40, 30 minutes ago. Since the parts supply has been completed, the preparation status “set” and the remaining number “2030” are displayed in the parts supply guide of FIG.

  If the estimated time when the part runs out is later than the end time of the current production job, the remaining number of circuit parts is sufficient, and the process proceeds to step 108, where the parts supply management device 32 remains in the next production job. It is determined whether or not the existing circuit component is used (S108). This is confirmed by specifying the type of board to be produced and the type of circuit component to be used from the production schedule of the job.

  If it is not used in step B, which is the next production job, in step 108, the notice of component shortage is not notified (S111). This is, for example, the case of FIG. 3 (2), where 14:55 after the start of job B corresponds to the estimated time for parts shortage, and 14:25 is the time for notice of parts shortage. In this case, the remaining number of circuit parts is sufficient. In this way, even if the cassette type feeder 26 in which the circuit parts are stored corresponds to the time when the parts are informed, the circuit parts that are not used in the next production job are not informed of the out of circuit parts. Supply can be prevented.

If it is used in the next production job, the process proceeds to step 109, and the parts supply management device 32 calculates an estimated part runout time in the next production job (S109). This is calculated by the following formula, for example, in the same manner as in step 104, and the values such as the number of used parts per sheet and cycle time are changed to the values of job B.
Estimated time for parts to be out of next production job = number of remaining parts at start of next production / number of parts used per sheet x cycle time (Equation 3)
Expected part-out time = End time of current production job + Expected part-out time of next production job (Equation 4)

This is, for example, the case of FIG. 3 (3), where the current job A end time is 14:50 from the production schedule (see FIG. 5), and the estimated time of part shortage in job B is from the formula (3). When it is calculated as 15 minutes after the start of B,
From (Equation 4), the expected part cut time = 14: 50 + 15 minutes = 15: 05, and 15:05 is calculated as the expected part cut time.

  Next, the component supply management device 32 determines whether or not it is a target of component outage notice (S110). This is determined based on whether the current time of 14:35 corresponds to the predicted time set in step 103 or 30 minutes before the expected part-out time calculated in step 109.

  In this case, since it is 30 minutes before the current time and is the subject of the parts-out notice, the parts-out notice is notified (S107). In this way, as shown in FIG. 5, the notice of running out of parts is performed as a parts replenishment guide in “slot 1-14, part code 2125R”.

  If it is not the target of the part-out notice in step 110, the part-out notice is not notified (S111). Further, by repeating the same process as in S108 to S111, a notice is given to the out of parts that occurs in the production after the production job.

  Then, the flow from step 104 to step 107 or step 104 to step 111 is repeatedly executed for each feeder, for example, every 5 minutes.

  When the production of the substrate type based on the production program is completed, the component supply management device 32 ends the execution of the flow (S112).

  In addition, when addition / deletion / change occurs in the job production schedule shown in FIG. 4, in the procedure for specifying the job production schedule in the above step 102, as shown in FIG. By performing the process (S301), the process of obtaining the production results up to the present (S302), and the process of correcting the estimated part shortage time (S303), the expected part cutout time in step 104 is repeatedly corrected, and the production plan can be quickly determined. Can follow changes.

  According to the parts replenishment guide method configured as described above, the expected part cut time is specifically calculated for each feeder (cassette type feeder) 26, and the production of the board types to be produced now and in the future shown in the production schedule. Based on the number of sheets and the production order, the calculated expected part cut time is compared with the production end time of the production job currently being produced (job A). If the estimated time of parts out is later than the end time of the production job currently being produced, it is determined whether or not the circuit parts need to be supplied depending on whether or not the parts are used in the subsequent production jobs. . For this reason, the circuit component of the type accommodated in the cassette type feeder 26 whose notice time of the expected time of component shortage is before the end time of the production job (production job A) of the board type currently being produced is the next production job. When used in (production job B, etc.), at the stage of execution of the production job (production job A) for the board type currently being produced, a notice of component shortage is given, and in the subsequent production jobs (production job B, etc.) When not in use, no notice will be given that parts will run out. In this way, based on the production number and production order of the current and future board types shown in the production schedule, the parts run-off notice is made at the stage of executing the production job (production job A) for the currently produced board type. Since it is determined whether or not to perform the part-out notice, the necessary part-out notice can be appropriately performed when necessary, and a smooth and smooth supply of circuit component types can be achieved.

  In addition, when the production of the board type currently being produced is continued, even if the cassette type feeder 26 containing the circuit parts corresponds to the notice time when the notice of parts out is applicable, the expected part out time is currently being produced. When the board type production job (production job A) is later than the end time (in this case, the remaining number of circuit component types satisfies the number used in the production job of the board type currently being produced) In addition, when the type of the circuit component stored in the cassette type feeder 26 is not used in the production job (production job B) of the substrate type to be produced next, no notice is given that the component has run out. As a result, it is possible to prevent extra types of circuit components that are not immediately used in production jobs from being replenished. Further, when the type of the circuit component stored in the cassette type feeder 26 is used in the production job (production job B) of the substrate type to be produced next, the supply of the circuit component is necessary. By changing the number of circuit parts to be mounted on each board of the production job, the expected time of part shortage is changed and a notice of part shortage is made, so that it is possible to smoothly supply the types of circuit parts.

  Next, a second replenishment guidance method for circuit components in the component supply management device having the above-described configuration will be described below based on a flowchart. This second replenishment guidance method is for replenishment of circuit components that are not used in the current production job, although feeders are mounted in the slots of the component supply device 6. First, similarly to the first component replenishment guide method, a mounting program for mounting circuit components on the board S is executed. As shown in FIG. 7, the component supply program executes component supply management according to the progress of the mounting program. It is executed in the device 32 (S201).

  Next, the component supply management device 32 specifies a job production schedule (S202). As shown in FIG. 4, in the job production schedule, as shown in FIG. 4, for example, the production order of the board types, the target number of production, the name of the line to be produced, the job name, etc. are recorded. .

  Next, the component supply management device 32 identifies circuit components that have been mounted on the component supply device 6 and are not used in the current production job (S203). An unused circuit component enclosed in a cassette type feeder arranged in each slot of the component supply device 6 is selected and its component code is specified.

  Next, the component supply management device 32 determines whether or not a circuit component that is not used in the specified job A is used in the subsequent production job (S204). For example, it is determined whether the job is used for the next production job (job B) and the next production job (job C). The component supply management device 32 identifies and confirms the type of board produced and the type of circuit component used from the job production schedule. The current time is 14:35.

  In the case of using it in the next and subsequent production jobs, the process proceeds to step 205, and the part-out notice time is specified (S205). For example, taking into account the work time for replenishment from the expected time of component shortage described later, the circuit component related to job B is 30 minutes (see FIG. 8A), and the circuit component used for job C is 40 minutes (see FIG. 8). 8 (2)) and a notice time are set.

  Next, the component supply management device 32 calculates a component shortage expected time (S206). The calculation method is obtained by the following equation, similarly to step 108 in the first supply guidance method.

First, in the case of FIG. 8 (1), it is a circuit component used in the job B,
Expected part runout time of next production job = number of remaining parts at start of next production / number of parts used per sheet x cycle time (Formula 5)
Expected part-out time = End time of current production job + Expected part-out time of next production job (Equation 6)
If the estimated time for parts out of the next production job (Job B) is 15 minutes from (Equation 5), the estimated time for parts out is 14: 50 + 15 from (Equation 6), which is 15:05. Is calculated.

Next, in the case of FIG.
Estimated time of out-of-part parts for production job = number of remaining parts at the start of production / number of parts used per sheet x cycle time (Equation 7)
Expected part-out time = End time of next production job + Expected part-out time of next production job (Equation 8)
If the estimated part cut time of one production job (production job C) is 5 minutes from (Expression 7) and the end time of job B is 15:10, the expected part cut time is from (Expression 8). 15: 10 + 5, and it is calculated to be 15:15.

  Next, the component supply management device 32 determines whether or not it is a subject of component shortage notice (S207). This is determined based on whether or not the current time (14:35) falls within the advance notice time specified in step 205 with respect to the expected part-out time calculated in step 206. For example, in the case of FIG. 8 (1), the notice time is 30 minutes, the current time is the subject of the parts out notice, and the parts out notice is given as a parts replenishment guide at 14:35 (in FIG. -17, part code 5653R ") (S208).

  Further, in the case of FIG. 8 (2), the notice time is 40 minutes, the current time is the subject of the parts out notice, and the parts out notice is given as a parts replenishment guide at 14:35 (in FIG. 1-18, part code SOP16 ") (S208).

  Note that the start of job B is 14:50, and parts that are not mounted on the component supply device 6 are notified of a part runout at 14:20, 30 minutes before the start of job B. Circuit parts are mounted as replacements (“slot 1-11, part code 0603D”, “slot 1-16, part code 3136F” in FIG. 5).

If it is not the subject of the parts-out notice, the parts-out notice is not notified (S209).
Then, the flow from step 204 to step 208 or from step 204 to step 209 is repeatedly executed for each feeder, for example, every 5 minutes.

  When the production of the substrate type based on the production program is completed, the component supply management device 32 ends the execution of the flow (S210).

  According to the component replenishment guide method configured as described above, the type of circuit component housed in the cassette type feeder 26 that is currently mounted on the component supply device 6 is a production job (production job) of the board type currently being produced. Although not used in A), when used for a production job (production job B or production job C) of a substrate type that is produced one after another, a component outage prediction time is calculated and a component outage notice is performed. As a result, even when a circuit component of a type used in a production job (production job B or production job C) of a substrate type to be produced one after another is in a state where the component is out of service immediately after production starts, Since the out-of-stock notice is made in advance at the stage of production job (production job A) of the board type currently being produced, the supply of circuit components in the next or subsequent production job (production job B or production job C) is surely and smoothly performed. It can be carried out.

In the above embodiment, when determining whether the remaining number of target circuit parts is sufficient or insufficient in the production job currently being produced, in the above embodiment, the end time of the current production job and the expected time of part shortage are calculated. In comparison, if the end time of the current production job is later than the expected time of parts outage, it is judged that the time is insufficient. However, the present invention is not limited to this. For example, the number of necessary circuit parts is compared with the remaining number of circuit parts. May be. In this case, the number of necessary circuit components is calculated by the following formula, for example.
Number of necessary circuit parts = number of remaining productions x number of parts used per sheet (Equation 9)
If the required number of circuit components is larger than the remaining number of circuit components, it is determined that the number is insufficient.
This remaining production number is obtained from the production schedule of the job and the production results of the substrate type.

  Further, the feeder for storing the circuit components is a cassette-type feeder in which a tape enclosing the circuit components is wound. However, the feeder is not limited to this. For example, a known feeder such as a tray-type feeder storing the circuit components in a tray is known. A feeder can be used.

  Further, the job production schedule shown in FIG. 4 indicates what items are included in the schedule, and the numerical value displayed in the schedule necessarily calculates the expected time of parts shortage in the above embodiment. It is not the basis for the calculation.

  Thus, the specific configuration described in the above-described embodiment is merely an example of the present invention, and the present invention is not limited to such a specific configuration. Various embodiments can be adopted without departing from the scope.

  DESCRIPTION OF SYMBOLS 2 ... Component mounting apparatus, 4 ... Board | substrate conveyance apparatus, 6 ... Component supply part (component supply apparatus), 8 ... Component transfer apparatus, 26 ... Feeder (cassette type feeder), 32 ... Component supply management apparatus, S ... Board | substrate.

Claims (3)

A substrate transport device that transports a substrate in the transport direction and carries it in and out of the mounting position, a component supply unit that is equipped with a plurality of feeders that respectively accommodate and supply different types of circuit components, and collects circuit components from each of the feeders A component mounting device including a component transfer device for mounting on the substrate transported to the mounting position;
Based on the mounting time per board of each board, the number of distinct types of circuit parts mounted on each board, and the number of circuit parts remaining in each feeder mounted on the component supply unit, A parts supply management device that calculates a predicted part-out time and calculates a part-out notice at a notice time before the expected part-out time,
In a component supply method using a component mounting system comprising:
The component supply management device calculates the estimated time of component shortage for each feeder mounted on the component supply unit based on a production schedule that determines the number of production and the production order of board types to be produced now and in the future, A circuit of the type accommodated in a feeder whose predicted part-out time is later than the end time of the production job currently being produced, and the notice time for notifying the expected time is before the end time of the production job of the board type currently being produced. It is determined whether or not a part is used in the next and subsequent production jobs, and when it is used, the part replenishment is notified at the stage of executing the production job for the board type currently being produced. Guidance method.   2. The notice of out of parts according to claim 1, wherein a circuit component of a type accommodated in the feeder is used in a next production job based on the production schedule when the type of circuit component is used in a current production job. The part replenishment guide method is characterized in that when the part is not used in the next production job, the part running out notice is not performed.   2. The next production job according to claim 1, wherein a circuit component of a type accommodated in the feeder is not used in a current production job, but is mounted on the component supply unit, based on the production schedule. A part replenishment guide method characterized by performing the notice of running out of parts when used in a production process or when used in successive production jobs.

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