JP4385956B2 - Mounted component supply instruction device and mounted component supply instruction method - Google Patents

Description

  The present invention relates to a replenishment instructing device and a replenishment instructing method for instructing a mounting machine to replenish components to be mounted in a component mounting line for mounting components on a substrate such as an electronic unit, and more particularly to a tape wound around a reel. The present invention relates to an instruction of a mounted component that is stored and supplied to a mounting machine by feeding a tape from a reel.

  An electronic unit usually has a substrate inside, and a large number of electronic components are mounted on the substrate. Such an electronic component (hereinafter referred to as a mounting component) is mounted on a substrate 2 flowing on the line by a mounting machine 10 provided in the component mounting line as shown in FIG. In such a component mounting process, the mounted component is often a component having a minute dimension of, for example, 2 mm × 1 mm.

  The minute mounting parts are accommodated in a tape 24 as shown in FIG. 11 and supplied to the mounting machine in the form of a reel 20 around which the tape 24 is wound. The mounting component is accommodated in a recess provided in the tape 24, and is delivered from the mounting component manufacturer in an initial state in which the tape 24 is wound around the reel 20, that is, a so-called package.

  When components are mounted on the substrate 2, the tape 24 is fed out from the reel 20, and the mounting machine 10 takes out the mounted components from the tape 24. Details will be described below. The delivered reel 20 is mounted on a cassette-shaped parts feeder 18 in the component mounting line as shown in FIG. The parts feeder 18 containing the reel 20 is loaded into the slot 16 in the mounting machine 10, and the tape 24 is fed from the reel 20 by the parts feeder 18. The mounted component on the fed-out tape 24 is adsorbed by the mounting head 100 positioned above, and the mounting head 100 mounts the mounted component on the substrate 2 flowing on the conveyor 4.

  The number of mounting components of the same type that are mounted per board differs for each component type. If there is a mounting component that consumes only one per board, there are also mounting components that consume five. Further, the number of mounting parts accommodated per reel varies depending on the type of mounting parts.

  For this reason, in the case of a mounted component having a large number of consumption points per board, that is, a high consumption speed, a plurality of reels corresponding to the component are loaded in the slot 16 in parallel. Then, the tape 24 is sequentially unwound from the reel and used (hereinafter referred to as “double row use”). On the other hand, in the case of a mounting part with a small consumption number, that is, a low consumption speed, one reel corresponding to the part is loaded into the slot 16 and used (hereinafter referred to as single row use). When using multiple rows of reels, the number of rows (hereinafter referred to as the number of double rows) is the number of mounted components consumed per board, the number of mounted components accommodated per reel, the interval for supplying reels, It is calculated based on the interval (hereinafter referred to as line cycle time) at which one substrate is placed on the line.

  However, as described above, even if the single-row use or double-row use of reels, or the number of double-rows when used in double rows, the tape 24 wound around the reels is all emptied, that is, the mounted components The timing at which the component breaks out varies depending on the type of mounted component and is random.

  Conventionally, when a component is cut out of a mounted component, the line is stopped each time, a reel that has been cut out due to a component cut is replaced, and the line is started again. During the continuous production of the product, a technique has been adopted in which reels that do not cause component parts to be cut out are loaded in the mounting machine 10 in advance before the start of lot production.

  However, in the former, the line is stopped every time when a component is cut off in the mounted component, resulting in a problem that the line operation rate is lowered and the manufacturing cost of the product is increased. On the other hand, in the latter, since it is necessary to load a large number of reels according to the production scale of the lot into the mounting machine, the mounting machine needs the number of slots corresponding to this, so a lot of equipment is installed in the mounting machine. Investment was required.

Therefore, in the conventional example, as shown in FIG. 12, the time T _Q when the component breaks is estimated from the consumption speed of the mounted component, and the mounted component is detected at a time T _S a predetermined time R from this time T _Q. Was instructed to replenish. Specifically, the remaining number of mounted components is confirmed by counting the number of mounted components consumed by a sensor (not shown) provided in the mounting head 100, and the time point T _{Q at} which the component breaks is estimated. We were able to. By component shortage instructs replenishment of the mounting parts from the time T _Q estimated before a predetermined time R, the component depletion mounted component occurs was minimized.

However, even in the conventional example, the time T _S at which the replenishment of the mounted component is instructed is a time point that is a predetermined time R back from the time T _Q at which each mounted component is cut out. It is different and remains random. Since the replenishment instruction time for each mounted component is not unified, the worker who performs the replenishment work is called by the equipment alarm for each mounted component and receives a replenishment instruction. For this reason, the load on the operator is increased, resulting in a waste of labor costs.

Further, in the conventional example, the replenishment work instructed at the replenishment instruction time point T _S corresponds to a specific mounting component, and therefore, the work load depends on the number of reel rows corresponding to the mounting component. Become. Therefore, the load of replenishment work in each replenishment instruction often varies greatly. Furthermore, it overlaps with the replenishment work of other mounted parts, and the work load becomes extremely high. In some cases, the replenishment work cannot be completed in time when the parts run out, and the line may be stopped. .

  Therefore, the present invention provides a mounted component supply instructing apparatus and a mounted component supply instructing method capable of issuing a replenishment instruction only at a predetermined time point and further leveling the work load for each replenishment instruction.

  A mounting component replenishment instructing apparatus according to the present invention is an apparatus for instructing replenishment of a mounting component that is housed in a tape wound around a reel and fed to the mounting machine by feeding out the tape from the reel. This is a time interval for instructing the replenishment work to be carried out during the period up to the next replenishment instruction time point. Replenishment with a replenishment-required reel identification unit that identifies reels and a forward-refillable reel identification unit that identifies reels of mounted parts that are ready to be replenished but do not run out before the next replenishment instruction point Along with the essential reels, instruct the supply of the reels that can be replenished ahead of time.

  Here, in the initial state of the reel, the tape is wound with a margin that can further wind the tape, and the reel that can be replenished forward is such that the remaining tape amount on the reel is equal to or less than the amount corresponding to the margin. It is preferable that A reel in the initial state is replenished by adding another reel of tape in the initial state to the reel whose remaining tape amount is less than the margin.

  Furthermore, based on the time required for replenishment of the replenishment-required reel, a surplus work amount calculation unit that calculates a surplus work amount that can be devoted to the replenishment work of the reel that can be fed forward, and within the range of the calculated surplus work amount In addition, it is preferable to include a forward replenishment execution reel selection unit that selects a forward replenishment execution reel that performs replenishment in the current replenishment operation from among the reels that can be replenished forward.

  Here, the forward replenishment execution reel selection unit may select the forward replenishment execution reels in the order of the reels of the mounted parts that are out of parts at an earlier time from among the reels that can be forwardly replenished.

  In addition, the forward-refilling reel selection unit moves forward based on a predetermined reel replacement amount required for replenishment by empty reel replacement and reel addition required amount for replenishment by reel tape addition. You may make it select the combination of a reel which implements forward supply from the reels which can be replenished so that the total required amount for replenishment may be closest to the amount of extra work.

  The mounting component replenishment instruction method according to the present invention is a method for instructing replenishment of a mounting component that is accommodated in a tape wound around a reel and fed to the mounting machine by feeding the tape from the reel. Is performed at a predetermined time interval, instructing replenishment work to be carried out during the period up to the next replenishment instruction time, and in addition, it is essential that replenishment occurs due to parts being cut out before the next replenishment instruction time point A replenishment-required reel identification step for identifying a component reel, and a forward-refillable reel identification step for identifying a mounted component reel that is ready to be replenished but does not run out before the next replenishment instruction time Along with the replenishment-required reel, the replenishment of the replenishable reel is instructed.

  Here, in the initial state of the reel, the tape is wound with a margin that can further wind the tape, and the reel that can be replenished forward is such that the remaining tape amount on the reel is equal to or less than the amount corresponding to the margin. It is preferable that A reel in the initial state is replenished by adding another reel of tape in the initial state to the reel whose remaining tape amount is less than the margin.

  According to the present invention, it is possible to issue a replenishment instruction only at a predetermined time point and further level the work load for each replenishment instruction.

  Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings. As an example, a method of instructing mounting component replenishment to a mounting machine that mounts components on a board of an electronic unit will be described, but the present invention is not limited to this. The present invention can be applied as long as the components are accommodated in a tape and supplied by feeding the tape from a reel around which the tape is wound.

  First, the mounting line 1 to which the mounting component instruction apparatus of the present embodiment is applied will be described. FIG. 1 shows a schematic configuration of a mounting line 1 to which the mounting component instruction apparatus of the present embodiment is applied. The mounting line 1 includes a transport conveyor 4 that transports a substrate 2 on which components are mounted, a substrate loading machine 6, a solder printing machine 8, a component mounting machine 10, a reflow furnace 12, and a substrate recovery unit provided adjacent to the conveyor 4. Machine 14 and the like. The board 2 on which the components are mounted is put on the conveyor 4 by the board feeder 6 and is sent to the solder printer 8 by the conveyor 4. In the solder printer 8, a thermosetting cream / solder for joining the mounting component and the substrate is printed on the surface of the substrate 2. The substrate 2 on which the solder is printed is further conveyed to a plurality of mounting machines 10.

  On the other hand, the mounting component is supplied to the mounting machine 10 in the form of a reel wound with a tape containing the mounting component. An operator mounts the delivered reel on the parts feeder 18 and loads it into a plurality of slots 16 provided in each mounting machine 10. FIG. 2 shows a partially enlarged view around the slot 16 of the mounting machine 10. Each component mounting machine 10 is provided with a plurality of slots 16 into which a parts feeder 18 having a reel 20 mounted is loaded. The parts feeder 18 has a cassette shape, and a reel 20 is mounted therein, and a mechanism for feeding out the tape from the reel 20 is incorporated. The reel 20 is wound with a tape containing a mounted component. The tape is fed out by the parts feeder 18 after the parts feeder 18 having the reel 20 mounted thereon is loaded into the slot 16. The tape is provided with recesses at a predetermined interval, and the mounting parts are accommodated in the recesses, respectively. The mounting head 100 positioned above the mounted component on the fed tape is adsorbed by air pressure and taken out from the tape.

  In the mounting machine 10, the mounting head 100 mounts mounting components on the substrate 2 on the transport conveyor 4. The board 2 on which the components are mounted is transferred to the reflow furnace 12, where the solder is melted and the mounted parts are electrically joined to the board 2. The board 2 to which the mounting components are bonded is collected from the transport conveyor 4 by the board collecting machine 14.

  There are a plurality of types of mounting parts to be mounted on the board 2, and the number of parts to be mounted per board differs depending on the type of mounting parts. For this reason, in the case of a mounting component that consumes a large amount per board, a so-called double row use in which a plurality of reels are set in advance for the same mounting component is used. For example, as shown in FIG. 2, a plurality of reels 20a accommodating the same mounting component are loaded in the slot 16 in parallel, and the tape is fed out from any one of the reels 20a to supply the mounting component. The On the other hand, in the case of mounting parts with a small number of consumptions, so-called single row use in which one reel is set for the same mounting part. For example, the reels 20c, 20d, and 20e are loaded in the slots 16 to supply mounting components corresponding to the respective reels.

  As described above, the mounting components are replenished to the mounting head 100 in the mounting machine 10 in the form of single-row use or double-row use of the reel around which the tape containing the component is wound. As the mounting head 100 takes out the mounting component from the tape and mounts it on the substrate 2, the tape is unwound and the remaining amount of the tape in the reel decreases. When the remaining tape amount is low, another reel or tape needs to be replenished to the mounting machine 10 in order not to cut the tape.

  There are two methods for supplying reels. That is, there are a method of exchanging a reel which has been emptied by exhausting the tape, and a method of adding a new reel to a reel with a small remaining amount by adding another tape. The replenishment by exchanging the empty reel is realized by removing the parts feeder 18 corresponding to the empty reel from the slot 16 and exchanging it from the empty reel to a reel in an initial state, that is, a delivery form of the mounting component manufacturer. When the tape in the reel becomes empty, the mounting head 100 starts from a reel of the same mounting component type (mounted component of the same component number, hereinafter referred to as the same component type) in the adjacent slot 16. Take out the mounted parts. On the other hand, as shown in FIG. 3, the replenishment by joining and adding the tape is performed by unwinding the tape 26 of the reel that is in low production and in use, and at the end 27 of the initial state reel 21 of the same component type. Tape tip 29 is connected. The unrolled and added tape 26 in production is wound around the reel 21 in the initial state, and this is mounted on the parts feeder 18 so that the reel can be replenished. The mounted component is supplied to the mounting head 100 of the mounting machine 10 by the reel supply method as described above.

  Here, replenishment by joining and winding the tape becomes possible when the reels in production and use, which are replenishment targets, meet certain predetermined conditions, and will be described below with reference to the drawings. 4A and 4B are side cross-sectional views of the reel on which the tape is wound. FIG. 4A shows the initial state of the reel, and FIG. 4B shows that the remaining amount of the reel can be added by one reel in the initial state. This shows the state. FIG. 5 shows the length of the tape 26 in production use during the tape addition operation.

  The reel in which the mounting component is accommodated in the tape is delivered from the mounting component manufacturer in a predetermined packaging form. As shown in FIG. 4 (a), the delivered reel 21 is wound with a sufficient amount of the tape that can be wound in the packaged state, that is, in the initial state. Assuming that the amount of tape wound around the reel 21 in the initial state is 100%, it is possible to wind α% tape around the reel 21 without protruding from the reel 23 of the reel. The tape amount of α% that can be further wound from the initial state of 100% is defined as a margin amount.

  Then, the tape is fed from the reel 21 to the mounting head 100, and the remaining amount of the tape is reduced. As shown in FIG. 4B, the remaining amount of the tape becomes α% or less corresponding to the above-described margin. . In this state, even if one reel (100% in the initial state) is wound on the reel 21 in the delivery form from another reel of the same part type, the tape does not protrude from the reel 23 of the reel. Therefore, it can be attached to the parts feeder 18. Accordingly, when the remaining tape amount is equal to or less than the above-described margin, it is possible to supply the tape by continuing and adding one tape on the reel 21 in the initial state.

  In addition, when performing the addition work, the remaining tape amount as shown by the dimension B in FIG. This is because the tape 26 in use is fed out and shortens even during the winding work, and a predetermined tape length B that allows the winding work, that is, the remaining amount of the tape is required. Here, the remaining tape amount corresponding to the tape length B is defined as β%.

  From the above, in order to replenish the mounted parts by adding the tape, it becomes possible when the remaining tape amount on the reel 22 in production and use becomes α% or less and the remaining tape amount is β% or more. It is necessary to have. When the remaining tape amount on the reel 22 in production use is in the range of α to β%, replenishment by winding is possible.

  In the mounting line 1 as described above, various types of mounting components are mounted, and if the number of consumption of each mounting component per board is different, it is accommodated per reel 21 in the initial state. The number of mounted parts varies. Since a replenishment instruction is issued a predetermined time before a component break occurs in the mounted component, the worker receives a replenishment instruction at random timing with no predictability. In addition, since the content of the replenishment instruction varies depending on the type of mounted component to be replenished, the burden is great for an operator who has other work besides the reel replenishment work. The mounting component replenishment instructing apparatus 30 according to the present invention has been developed by paying attention to such a problem. In the component replenishing system 32 and the mounting line 1 to which the mounting component replenishing instructing device 30 is applied, a replenishing instruction is given only at a predetermined time. And the work load for each replenishment instruction can be further leveled. The details will be described below.

  A component supply system 32 to which the mounted component supply instruction apparatus 30 of the present embodiment is applied will be described. FIG. 6 shows a configuration of a component supply system 32 to which the mounted component supply instruction device 30 of the present embodiment is applied. The component supply system 32 includes a production preparation device 34, a mounter control device 38, a mounter information management device 36, and a mount component supply instruction device 30. These devices have communication control units 42, 52, 62, and 72, respectively, and are connected via a network 40 so that various types of information can be transmitted and received. Each device is described below

  The production preparation device 34 includes a calculation unit 41, a communication control unit 42, an input unit 43, an output unit 44, and an internal storage device 45, which are connected by an internal bus. The calculation unit 41 further includes a reel single-row / double-row determination unit 46 that determines whether a single-row use or a double-row use is used for the reels of each mounted component, and a reel double-row number calculation that calculates the number of rows in the case of double rows Part 47.

  From the input unit 43, the type of mounted component per board, the number of consumed parts, the number of accommodated parts per reel, and the theoretical value of the line cycle time, which is the time interval at which one board is set on the line, A replenishment time interval, which is a time interval for performing a replenishment instruction, and a time devoted to a replenishment operation performed between each replenishment instruction time point (hereinafter referred to as a replenishment operation time) are input. An arbitrary value can be set for the replenishment time interval.

  Then, the reel single row / double row determination unit 46 in the calculation unit 41 determines whether the reel 20 of each mounted component is used in single row or double row. The number of components accommodated per reel, the number of components consumed per board, the theoretical value of the line cycle time, the upper limit value α% of the remaining amount of tape in which the reels can be replenished, and the lower limit value β% From this, the time during which the reel can be added is calculated (hereinafter referred to as the addable state duration). (Continuation possible time duration) = (number of accommodated parts per reel) / (number of consumed parts per board) × (theoretical value of line cycle time) × (α−β)% Then, the continuation possible state continuation time is compared with twice the predetermined replenishment time interval, and if it is less than this, it is determined that the mounted component requires the use of double rows of reels. Otherwise, single row usage is used.

As shown in FIG. 7, when the rewritable state duration time K is twice or more the supply time interval L, the time T _B when the remaining tape amount at which reel replenishment becomes impossible becomes β%. However, if it is after the next replenishment instruction time point T _{n + 1} and before the next replenishment instruction time point T _{n + 2} , the time point T _A at which supplementary replenishment is possible is always the current replenishment instruction time point T _n. This is because the time is earlier. In supplying work time M from T _n is performed between T _{n + 1,} the reel is allowed state plus winding sure.

  When it is determined that the reels are used in multiple rows, the reel double row number calculation unit 47 in the calculation unit 41 further calculates the number of rows of the reels (hereinafter referred to as the double row number). The number of double rows is calculated from (number of double rows) = ((consumed components per board) from the number of parts consumed per board, the number of parts accommodated per reel, the theoretical value of the line cycle time, and the replenishment time interval L. (Number) / (number of accommodated parts per reel) × (replenishment time interval L) × 2) +1. In this equation, the number of double columns is calculated by raising the number after the decimal point.

This is because, similar to the continuation possible time duration described with reference to FIG. 7, if the time during which the reels of the mounted components set with the number of double rows can supply the mounted components is K, this time is the replenishment time interval L. In the case of two times or more, if the empty reel is replaced at the time point T _A , the time point T _B at which the component is cut out of the mounted component is always after the next supply instruction time point T _{n + 1} . In the replenishment operation time M between the current replenishment instruction time point _Tn and the next replenishment instruction time point _{Tn + 1} , it is possible to reliably prevent the mounting component from running out. In addition, since there is a reel that cannot be exchanged during production use when replacing an empty reel at time T _A , one reel is added to the end of the above double row number calculation formula.

  As described above, the production preparation device 34 determines whether or not it is necessary to use double-rows on the reels of the mounted components according to the type of the mounted components before the lot production is started on the mounting line 1. If double row use is required, the number of double rows is calculated. These pieces of information can be sent to the mounting machine control device 38, the mounting machine information management device 36, and the mounting component supply instruction device 30 via the communication control unit 42. Information displayed on the output unit 44 of the production preparation device 34 may be input from the input unit 43 of another device.

  Note that the production preparation apparatus 34 of the present embodiment may be configured to cause a general computer to execute the above-described processing procedure according to a predetermined program.

  The mounting machine control device 38 includes a calculation unit 51, a communication control unit 52, and a display unit 53, which are connected by an internal bus. The computing unit 51 further includes a mounting head control unit 56 that controls the operation of the mounting head 100 and a mounting component usage number detection unit 58 that detects the number of mounted components consumed.

  The mounting head control unit 56 in the calculation unit 51 sucks and removes the mounted component from the tape drawn out from the reel of the mounted component, and mounts the component on the board 2 flowing on the line. At this time, a component suction confirmation sensor (not shown) provided in the mounting head 100 confirms the suction of the component, and the mounted component usage number detection unit 58 in the calculation unit 51 counts the number of components consumed for each mounted component. Count. The number-of-consumption information for each mounted component is sent from the calculation unit 51 to the mounter information management device 36 via the communication control unit 52.

  The mounting machine information management device 36 includes a calculation unit 61, a communication control unit 62, an input unit 63, an output unit 64, and an internal storage device 65, which are connected by an internal bus. The calculation unit 61 further includes a mounted component remaining number management unit 66 that manages the remaining number of components for each mounted component, and a mounted component remaining time calculation that calculates the remaining time until the component is run out from the remaining component number of each mounted component. And a slot information management unit 68 that manages the types of mounted components and the multi-row setting in each slot 16 of each mounting machine 10.

  First, the number of consumptions of each mounted component is input from the mounting machine control device 38 to the computing unit 61 of the mounting machine information management device 36 via the communication control unit 62. Then, the remaining number of mounted components management unit 66 in the calculation unit 61 manages the remaining number of mounted components in the reels loaded in the slots 16 of the mounting machines 10. Further, the remaining mounted component time calculation unit 67 in the calculation unit 61 calculates the remaining time until the component runs out for each type of mounted component from the remaining number of mounted components on each reel. The remaining time is calculated from the remaining number of components mounted on each reel, the number of components consumed per substrate of this component, and the theoretical value of the line cycle time.

  As described above, the mounting machine information management device 36 manages the remaining number and remaining time of mounting parts for the reels loaded in the slots 16 of the mounting machines 10. Note that the calculation unit 61 may not have the mounted component remaining number management unit 66, and may directly calculate the remaining time of each mounted component from the number of consumed mounted components reported from the mounter control device 38. . Information on the remaining number or remaining time of each mounted component managed and calculated by the calculation unit 61 is sent to the mounted component supply instructing device 30 via the communication control unit 62. Moreover, the mounting machine information management apparatus 36 of this embodiment is good also as a structure which makes a general computer perform the above-mentioned process according to a predetermined program.

  The mounted component supply instruction device 30 includes a calculation unit 71, a communication control unit 72, an input unit 73, an output unit 74, and an internal storage device 75, which are connected by an internal bus. The computing unit 71 further includes a replenishment-required reel specifying unit 76, a forward-rechargeable reel specifying unit 77, a margin work amount calculating unit 78, a forward supply replenishment execution reel selecting unit 79, and a margin work determining unit 80. This will be described below with reference to FIGS. 6, 8 and 9. FIG. 8 is a flow chart for determining a reel to perform the current replenishment operation, and FIG. 9 is a timing chart of each replenishment instruction time point and the work time of the replenishment operation performed in the meantime.

As shown in FIG. 9, the input unit 73 is a time interval for giving a replenishment instruction, which is a predetermined replenishment time interval L, and each replenishment instruction time point T _n−1 , T _n , T _{n + 1} ,. A predetermined replenishment work time M performed during T _{n + m} is input. On the other hand, the remaining number or remaining time of each mounted component is input from the mounter information management device 36 via the communication control unit 72. The replenishment time interval L and the replenishment work time M input from the input unit 73 may be input from the production preparation device 34 via the communication control unit 72. Further, instead of the replenishment time interval L, the respective replenishment instruction time points T _n−1 , T _n , T _{n + 1} ,..., T _{n + m} are input via the input unit 73 or the communication control unit 72. May be.

Then, in step S10 shown in FIG. 8, if the replenishment-required reel specifying unit in the calculation unit 71 in FIG. 7 does not replenish as it is, the reels that cause parts to run out before the next replenishment instruction time T _{n + 2} ( (Hereinafter referred to as replenishment-required reel). As shown in FIG. 9, “a mounted part in which a part is cut before the next replenishment instruction time point” means that a replenishment instruction is given at the current replenishment instruction time point T _n and the next replenishment instruction time point T _{n + 1.} If the replenishment operation is not completed by this time, it means a mounted component that will cause the component to run out. As described above, in each mounting machine 10, the replenishment-required reel of the mounting component that must be replenished is specified for each type of mounting component.

  Then, in step S12, the surplus work amount calculation unit 78 in the calculation unit 71 replenishes reels other than the replenishment required reels based on the work amount required for replenishment of the replenishment essential reels and the predetermined replenishment work time M. The amount of work that can be allocated is calculated. Here, the amount of work may be defined by the work time required for exchanging empty reels and adding and replenishing tape, or may be defined by the number of work.

In step S14, the surplus work determination unit 80 in the calculation unit 71 determines whether there is a surplus work amount in which the reel can be exchanged within the work time. That is, it is determined from the spare work amount whether it is possible to replace the empty reels or to add the tapes in addition to the replenishment required reels. If there is no allowance for replenishment work other than the replenishment required reel from the surplus work amount, the process proceeds to step S20. In this case, a reel indicated in the current supply instruction timing T _n becomes only replenishment required reel. If there is room to perform the supply work other than the supply-required reels, the process proceeds to step S16.

In step S16, the forward-replenishable reel specifying unit 77 in the calculation unit 71 does not run out before the next replenishment instruction time point T _{n + 2} without performing replenishment as it is. The reel of the mounted component in (1) is identified (hereinafter referred to as a reel that can be fed forward). Note that “advance” means that the component does not run out even if the replenishment operation is not performed during the current replenishment operation time M, but the replenishment operation is carried out in advance. For example, in a mounted component in which multiple rows of reels are used, the component will not run out until the supply instruction time T _{n + 2} , but this reel is already out of multiple rows of reels. Means that the reel is replaced in the current replenishment work time M. In addition, when there is a single-row use reel that has already been able to be wound up, there is no part cut by time T _{n + 2} , and this reel is replenished and replenished during the current replenishment operation time M. As described above, for each slot 16 in each mounting machine 10, a reel that can be replenished forward, which is a reel of a mounted component that is in a state where replenishment is not essential but is replenishable, is specified.

Then, in step S18, performed ahead of schedule replenishment exemplary reel selector 79 in the arithmetic unit 71, within the calculated surplus supply amount of work, from the accelerated refillable reels, the supply in the current supply instruction timing T _n Select the reel to be used (hereinafter referred to as the advance supply reel).

  Here, the selection method of the forward supply reel is selected in the order of the reels corresponding to the mounted parts that cause the parts to run out earlier. The reels that can be replenished forward are listed up, the mounted parts corresponding to the reels are sorted in the order of time when the parts run out, and the reels are selected from the top of the list within the margin work amount.

  It should be noted that the method for selecting the forward supply reel is not limited to this. For example, the amount of work required for replenishment by exchanging empty reels (hereinafter referred to as the amount of work required for reel replacement) and the replenishment of tape, that is, unwinding the tape 26 on the reel in production and use this tape 26 as a new one. The amount of work required for the replenishment of the reel 21 in the initial state (hereinafter referred to as the amount of work required for adding the reel) is defined in advance. It is also preferable to select the combination of the reels that perform the forward replenishment so as to be within the range of the marginal work amount calculated in step S12 and closest to the marginal work amount.

After accelerated replenishment exemplary reel is selected, the process proceeds to step S20, the current supply reel targeted instruction unit 81 in the arithmetic unit 71, in the current supply instruction timing T _n, together with replenishing essential reel identified in step S10, The supply of the forward supply instruction execution reel selected in step S18 is instructed. In the output unit 74, the replenishment list is printed, and the worker is notified of the content of the replenishment work. The time from when the operator collects the list and starts collecting reels in the initial state is shown as time N in FIG. The worker who receives the list collects the initial state reels 21 to be replenished at the time indicated by P in FIG. The worker who collects the reels starts the replenishment work, and replenishes the mounted component reels during the replenishment work time indicated by M in FIG.

  On the other hand, the same content as the replenishment list is displayed on the display unit 53 of the mounting machine control device 38 in each mounting machine 10 via the communication control unit 72. The display unit 53 is a pilot lamp or the like provided for each slot 16 of the mounting machine 10, and turns on a lamp in the slot 16 to be replenished to assist the worker in replenishment work. Note that the mounted component supply instructing device 30 of the present embodiment may be configured to cause a general computer to execute the above-described processing according to a predetermined program.

  In the mounting component replenishment instructing device 30 of the present embodiment, the forward replenishment implementation reel is selected from among the forward replenishment possible reels, but is not limited to this, and the forward replenishment implementation reel is not necessarily selected. do not have to. At the time of replenishment instruction, it may be configured such that all the replenishable reels are instructed (listed up) together with the replenishment essential reels. As a result, it is possible to replenish the reel that can be replenished forward as much as possible within a predetermined working time. Thereby, it is possible to replenish the reel that can be replenished forward according to the skill level of the operator. It is also possible to preferentially replenish the reels that can be replenished forward in a slot adjacent to the slot 16 to which the replenishment essential reels are replenished.

The mounted component supply instructing device 30 performs the operation described above for each supply time interval L. Each supply instruction timing _{T n-1, T n,} T n + 1, ···, in T n + _m, if there is room in the replenishment amount of work, not only the replenishment required reel in refillable state reel Since the replenishment is also performed, the replenishment work can be advanced and the replenishment work load of the operator can be leveled. In addition, since the replenishment instruction is issued at a replenishment instruction time point for each predetermined replenishment time interval L, the worker receives a replenishment instruction only at a predetermined time point, and the work load is reduced due to its high predictability. Can be reduced.

It is the schematic which shows the structure of the mounting line to which the mounting component supply instruction | indication apparatus of this embodiment is applied. It is the elements on larger scale of FIG. 1, and is a figure which shows the slot periphery of a mounting machine. It is a figure which shows the replenishment method which joins a tape and winds up. It is a sectional side view of a reel on which a tape is wound. (A) shows the initial state of the reel, and (b) shows that the remaining amount of tape on the reel can be added to one reel in the initial state. Indicates the state. It is a figure which shows the tape length in production use at the time of the tape addition operation | work. It is. It is a figure which shows the structure of the components supply system to which the mounted components supply instruction | indication apparatus of this embodiment is applied. It is a figure which shows the relationship between the replenishment time interval of mounting components, and the continuation possible state continuation time. It is a flowchart figure which determines the reel which implements replenishment work in the mounting component replenishment instruction | indication apparatus of this embodiment. It is a figure which shows the work time of the replenishment work performed during the replenishment instruction | indication time. It is a figure which shows the structure of the mounting machine provided in the component mounting line. It is a figure which shows the state in which the tape which accommodated the mounting components was wound around the reel. It is a figure in a prior art example which shows the relationship between the time of a component piece occurring, the time of issuing a supply instruction, and the supply work time.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Mounting line, 2 Substrate, 4 Conveyor, 10 Mounting machine, 16 Slot, 18 Parts feeder, 20 Reel, 21 Reel in the initial state, 26 Tape in production use, 30 Mounting component replenishment instruction device, 32 Component replenishment system, 34 Production preparation device, 36 Mounting machine information management device, 38 Mounting machine control device, 40 Network, 76 Replenishment-required reel specifying part, 77 Rechargeable reel specifying part, 78 Allowable work amount calculating part

Claims (7)

A device for instructing replenishment of mounting components supplied to a mounting machine by being housed in a tape wound around a reel and fed out from the reel,
The replenishment instruction is performed at predetermined time intervals, and instructs replenishment work to be performed during the period until the next replenishment instruction time point.
Furthermore,
A replenishment-required reel identifying unit that identifies a reel of a mounted component that requires component replenishment before the next replenishment instruction time point,
Reel specifying part that can be replenished ahead of time to identify reels of mounted parts that are ready for replenishment, but no parts run out before the next replenishment instruction time point,
With
A mounting component replenishment instructing device that instructs replenishment of reels that can be replenished ahead of time along with replenishment required reels. In the mounting component supply instructing device according to claim 1,
In the initial state of the reel, the tape is wound with a margin that allows further winding of the tape.
The reel that can be replenished forward is such that the remaining tape amount on the reel is equal to or less than the amount corresponding to the margin.
Mounting component replenishment instruction device. In the mounting component supply instructing device according to claim 1 or 2,
Based on the amount of work required for replenishment of the replenishment-required reel, a surplus work amount calculation unit that calculates a surplus work amount that can be used for the replenishment work of the replenishable reel,
Within the range of the calculated margin work amount, from among the reels that can be replenished forward, the forward replenishment execution reel selection unit that selects the forward replenishment execution reel that performs replenishment in the current replenishment operation,
A mounting component supply instructing device further comprising: In the mounting component supply instructing device according to claim 3,
The front-end replenishment execution reel selection unit selects the front-end replenishment execution reels in the order of the reels of the mounted parts where the parts run out at an earlier point in time from among the reels that can be replenished forward.
Mounting component replenishment instruction device. In the mounting component supply instructing device according to claim 3,
The advance replenishment implementation reel selection section
Based on the predetermined amount of reel replacement work required for replenishment by exchanging empty reels and the amount of work required for reel replenishment required for replenishment by reel tape addition,
A mounted component replenishment instructing device that selects a combination of forward replenishment execution reels from among reels that can be replenished forward, so that the total amount of work required for replenishment is closest to the surplus work amount. A method of instructing replenishment of a mounting component that is housed in a tape wound around a reel and fed out of the reel to the mounting machine,
The replenishment instruction is performed at predetermined time intervals, and instructs replenishment work to be performed during the period until the next replenishment instruction time point.
Furthermore,
A replenishment mandatory reel identifying step for identifying a reel of a mounted part that needs to be replenished before the next replenishment instruction time point,
A reel identifying step that enables forward replenishment to identify reels of mounted components that do not run out before the next replenishment instruction time but are ready to be replenished;
With
A mounting component replenishment instruction method for instructing replenishment of reels that can be replenished ahead of time along with replenishment mandatory reels. In the mounting component supply instruction method according to claim 6,
In the initial state of the reel, the tape is wound with a margin that allows further winding of the tape.
The reel that can be replenished forward is such that the remaining tape amount on the reel is not more than the amount corresponding to the margin,
Mounting component replenishment instruction method.

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