JP6569432B2 - Component mounting apparatus, component mounting method, and program - Google Patents

Description

  The present invention relates to a component mounting apparatus, a component mounting method, and a program, and more particularly, to a component mounting apparatus, a component mounting method, and a program for mounting a component on a board.

  When a component mounting apparatus mounts a component on a board, the component mainly held by the feeder is adsorbed by a plurality of nozzles attached to the head, and the head is moved to place the component at a predetermined position on the substrate. Conveying. Here, in the conveyance of parts by suction, it is necessary to ensure alignment accuracy with respect to the parts at the time of adsorption. If the alignment accuracy is poor, there is a possibility that the parts cannot be transferred to a normal position. is there. Therefore, as an improvement measure when such alignment accuracy is poor, for example, Patent Document 1 discloses a technique related to an arithmetic device, a component mounting device, a program, and an arithmetic method. The technique described in Patent Document 1 calculates an abnormality occurrence rate for each suction nozzle and feeder, and changes the combination of the suction nozzle and the feeder when the abnormality occurrence rate exceeds a predetermined threshold.

JP 2010-238689 A

  In general, the component mounting apparatus is programmed to efficiently mount components, and the deviation in the number of times the feeder and suction nozzle are used is small. However, in the technique described in Patent Document 1, the suction nozzle is changed to a suction nozzle with a low abnormality occurrence rate when the suction nozzle is changed, and the number of times the changed suction nozzle is used is increased. For this reason, the technique described in Patent Document 1 may cause the suction nozzle to be used to be biased toward a specific suction nozzle. Here, when mounting a component on a substrate, the head is moved onto the feeder and the component supplied to the feeder is sucked by each nozzle, and then the head is moved onto the substrate to mount the component sucked by each nozzle. Repeat the operation. For this reason, when changing the suction nozzle, if the suction nozzle to be used is biased to a specific suction nozzle, the number of times the above operation is repeated may increase, and the mounting time of components on the board may increase. There is sex. As described above, the technique described in Patent Document 1 increases the mounting time and decreases the productivity due to the increase in the moving time of the head when the adsorption nozzle is changed.

  The object of the present invention is to suppress the deviation of the number of times of use of a single nozzle and reduce the defective rate when changing the combination of the nozzle and the feeder, so that the production time is not affected. It is an object of the present invention to provide a component mounting apparatus, a component mounting method, and a program capable of suppressing the reduction in performance.

  In order to achieve the above object, a component mounting apparatus according to the present invention includes a plurality of feeders including first and second feeders that supply components to a plurality of nozzles including first and second nozzles. Parameter output means for outputting a value of a predetermined parameter corresponding to each combination with each of the plurality of nozzles, the first nozzle, the first feeder, the second nozzle, and the second A value of a predetermined function for outputting a value corresponding to the quality of the combination of the parameter values relating to each combination of the feeder, the first nozzle, the second feeder, the second nozzle, and the A combination of the nozzle and the feeder is given to a value that indicates a better one of the function values of the combination of the parameter values relating to each combination of the first feeder. It is configured to include a setting means for setting a combined, a.

  In order to achieve the above object, a component mounting method according to the present invention includes a plurality of feeders including first and second feeders that supply components to a plurality of nozzles including first and second nozzles. A value of a predetermined parameter corresponding to each combination with each of the plurality of nozzles is output, and each of the first nozzle and the first feeder, and the second nozzle and the second feeder. A value of a predetermined function for outputting a value according to the quality of the combination of the parameter values relating to the combination, a first nozzle and the second feeder, and a second nozzle and the first feeder. The combination of the nozzle and the feeder is set so as to give a value indicating a better one of the function values of the parameter value combinations related to the combination.

  In order to achieve the above object, a program according to the present invention provides a computer with each of a plurality of feeders including first and second feeders for supplying parts to a plurality of nozzles including first and second nozzles. A parameter output process for outputting a value of a predetermined parameter corresponding to each combination of the plurality of nozzles, the first nozzle, the first feeder, the second nozzle, and the second A value of a predetermined function for outputting a value according to the quality of the combination of the parameter values associated with each of the feeders, the first nozzle, the second feeder, the second nozzle, and the first Among the values of the functions of the combinations of the parameter values relating to the respective combinations of the feeders of the feeders, the values indicating the better are given to the nozzle and the feeder A setting process of setting the combined viewed, cause the execution, characterized in that.

  According to the present invention, when changing the combination of the nozzle and the feeder, the deviation of the number of times of use of a certain nozzle is suppressed and the value of the defective rate is lowered, so that the production time is not affected. The reduction in property can be suppressed.

It is a block diagram of the component mounting apparatus which concerns on one Embodiment (1st Embodiment) of this invention. It is a block diagram of the component mounting apparatus which concerns on other embodiment (2nd Embodiment) of this invention. It is the figure which illustrated the position shift with the position of the component on the design in the component mounting apparatus which concerns on other embodiment (2nd Embodiment) of this invention, and the position of an actual component. It is a figure which shows the defect rate with respect to the combination of the nozzle and feeder in the component mounting apparatus which concerns on other embodiment (2nd Embodiment) of this invention. It is a flowchart of the defect rate reference process which concerns on other embodiment (2nd Embodiment) of this invention. It is a flowchart of the combination change process which concerns on other embodiment (2nd Embodiment) of this invention. It is a flowchart of the nozzle change examination process which concerns on other embodiment (2nd Embodiment) of this invention. It is a flowchart of the combination change process which concerns on other embodiment (3rd Embodiment) of this invention. It is a flowchart of the feeder change examination process which concerns on other embodiment (3rd Embodiment) of this invention. It is a figure which shows an example of the defect rate with respect to the combination of the nozzle and feeder in the component mounting apparatus which concerns on other embodiment (2nd Embodiment) of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
One embodiment (first embodiment) of the present invention will be described with reference to FIG. FIG. 1 is a block diagram of a component mounting apparatus 100 according to the present embodiment (first embodiment).

  The component mounting apparatus 100 includes a parameter output unit 130 and a setting unit 140. The parameter output unit 130 supplies parts to a plurality of nozzles including the first and second nozzles, and each of a combination of each of the plurality of feeders including the first and second feeders and each of the plurality of nozzles. The value of the corresponding predetermined parameter is output. The predetermined parameter means a value of the defective rate itself, a value obtained by multiplying the defective rate by a predetermined numerical value, a value obtained by subtracting the defective rate from “1”, and the like. The defect rate is a value obtained by dividing the number of times when the measured value obtained by measuring the posture of the component conveyed by the nozzle exceeds a predetermined threshold by the number of times the component is conveyed by the nozzle.

  The setting unit 140 outputs a value according to whether the combination of the parameter values related to each combination of the first nozzle and the first feeder, and the second nozzle and the second feeder is good or bad. A value indicating that the value is a better function among the function values of the combination of the parameter values related to the combination of the first nozzle and the second feeder and the combination of the second nozzle and the first feeder. The combination of nozzle and feeder is set for those who give The predetermined function may be a function that monotonously increases as the parameter value increases, or a function that monotonously decreases as the parameter value increases.For example, addition, multiplication, etc. of the parameter values corresponding to each function may be performed. Say. Further, the value indicating that it is better refers to a larger value or a smaller value among the values of the predetermined function, and a larger value or a smaller value is a value according to the predetermined function, in particular It is not limited.

  Here, when setting a combination, it is possible to obtain a good value by simply setting a combination of a nozzle and a feeder that gives a value indicating better, but on the other hand, a specific nozzle The number of uses increases. For this reason, the moving time of the head is increased and productivity is reduced.

  On the other hand, as described above, when changing the combination of the nozzle and the feeder, the component mounting apparatus 100 indicates that the value among the exchanged values of the nozzle to be changed and the nozzle to be changed is better. The combination of nozzle and feeder is set for the value.

  As described above, in this embodiment, when changing the combination of the nozzle and the feeder, the nozzle to be changed and the nozzle to be changed are exchanged, so the number of times of use of each nozzle is largely changed before and after the change of the combination. However, it is possible to suppress a deviation in the number of times a certain nozzle is used.

  Therefore, according to the present embodiment, when changing the combination of the nozzle and the feeder, the deviation of the number of times of use of a single nozzle is suppressed and the value of the defective rate is lowered, so that the mounting time is not affected. Moreover, the reduction in productivity can be suppressed.

(Second Embodiment)
Another embodiment (second embodiment) of the present invention will be described with reference to FIGS. First, the structure of the component mounting apparatus 200 of this embodiment is demonstrated using FIG. FIG. 2 is a block diagram of a component mounting apparatus 200 according to this embodiment (second embodiment).

  The component mounting apparatus 200 includes a storage unit 210, a measurement unit 220, a calculation unit (parameter output unit) 230, and a change unit (setting unit) 240. The storage unit 210 stores the position of the designed part. In addition, the storage unit 210 stores a defect rate for a combination of a nozzle and a feeder used when each component is mounted on a substrate. In addition, the defect rate with respect to the combination of a nozzle and a feeder is later mentioned using FIG.

  The measuring unit 220 measures the positional deviation between the position of the designed part and the actual part position. Here, the positional deviation between the position of the designed part and the actual part position will be described with reference to FIG. FIG. 3 is a diagram exemplifying a positional deviation between a designed component position and an actual component position in the component mounting apparatus 200 according to the present embodiment (second embodiment).

  As illustrated in FIG. 3, the difference between the center position of the designed part and the center position of the actual part in the X direction and the Y direction is set as the deviation of the actual part position with respect to the position of the designed part. . Further, the difference in the θ (rotation) direction is the deviation of the actual part position from the designed part position. Then, the measurement unit 220 outputs deviations in the X direction, the Y direction, and the θ (rotation) direction to the calculation unit 230. The method of measuring the posture of the component by the measuring unit 220 is a known technique as disclosed in Japanese Patent Application Laid-Open No. 2013-98359, and will not be specifically described. Returning to FIG. 2, the calculation unit 230 and the change unit 240 will be described.

  The calculation unit 230 determines whether the positional deviation in the X direction, the Y direction, and the θ (rotation) direction input by the measurement unit 220 has exceeded a predetermined threshold value. If the calculation unit 230 determines that the number has been exceeded, the calculation unit 230 counts the number of times it is determined to be defective. In addition, regarding the positional deviation measured by the measurement unit 220, when the positional deviation occurs in any of the X direction, the Y direction, and the θ (rotation direction) direction, the number of times is determined as defective. It is included. The calculation unit 230 calculates a value obtained by dividing the number of times determined to be defective by the number of suctions as the defect rate. Then, the calculating unit 230 outputs the calculated defect rate to the changing unit 240.

  The changing unit 240 determines whether or not the failure rate input by the calculating unit 230 exceeds a preset threshold value. When the changing unit 240 determines that the threshold value is exceeded, the changing unit 240 changes the combination of the nozzle and the feeder so that the value of the defect rate is minimized. In the present embodiment, the changing unit 240 changes either one of the nozzle and the feeder. This suppresses an increase in mounting time.

(Change procedure)
Next, a procedure for changing the combination of the nozzle and the feeder will be described with reference to FIGS. First, the defect rate with respect to the combination of a nozzle and a feeder is demonstrated using FIG. FIG. 4 is a diagram showing a defect rate with respect to a combination of a nozzle and a feeder.

  As illustrated in FIG. 4, in the present embodiment, there are three types of parts to be supplied: part A, part B, and part C. The feeders are nine types 1-9. Among these, 1-3 supply the part A, 4-6 supply the part B, and 7-9 supply the part C. In addition, there are three types of nozzles: nozzle a, nozzle b, and nozzle c. These nozzles are assumed to be capable of adsorbing any of components A to C. Further, the defect rate due to the combination of the feeder m and the nozzle n is “Pmn”. Further, a predetermined defect rate threshold is set to “Pth”.

  Next, the defect rate reference process will be described with reference to FIG. FIG. 5 is a flowchart of the defect rate reference process according to the present embodiment (second embodiment).

  In step S100, the changing unit 240 performs a process of referring to the defect rate “Pmn” illustrated in FIG. In this process, the changing unit 240 refers to one defect rate “Pmn” from the defect rates “Pmn” shown in FIG. 4 and moves the process to step S200. In this process, the changing unit 240 refers to the next defect rate “Pmn” when the process returns from step S200 described later. At this time, the order of referring to the defect rate “Pmn” shown in FIG. 4 is not particularly limited, but for example, it may be referred to sequentially from “P1a” shown in FIG.

  In step S200, the changing unit 240 determines whether or not the defect value “Pmn” referred to in step S100 exceeds a predetermined threshold “Pth”. In this process, when the changing unit 240 determines that the defect rate “Pmn” exceeds the predetermined threshold “Pth”, the process proceeds to step S300. On the other hand, in this process, when the changing unit 240 determines that the defect rate “Pmn” does not exceed the predetermined threshold “Pth”, the process returns to step S100.

  That is, in step S100 and step S200, the changing unit 240 refers to the defect rate “Pmn” shown in FIG. 4 in order, and determines whether or not the defect rate “Pmn” exceeds a predetermined threshold “Pth”. Repeatedly. In addition, when the change unit 240 determines that the defect rate “Pmn” does not exceed the predetermined threshold “Pth” by repeatedly performing the above-described process, the defect rate “Pmn” is again set after a predetermined time has elapsed. It is determined whether or not a predetermined threshold “Pth” is exceeded.

  In step S300, when the change unit 240 determines in step S200 that the defect rate “Pmn” exceeds the predetermined threshold value “Pth”, the change unit 240 performs a process of changing the combination of the nozzle and the feeder. This combination change process will be described later with reference to FIG.

  The combination change process will be described with reference to FIG. FIG. 6 is a flowchart of the combination change process according to the present embodiment (second embodiment). In this combination change process, when the combination of the nozzle and the feeder is changed, the change is made in consideration of the influence on the mounting time.

  In step S310, the changing unit 240 performs a nozzle change examination process. In this nozzle change examination process, it is examined which nozzle is most suitable for the change among a plurality of nozzles to be changed. Here, the nozzle changing process will be described with reference to FIG. FIG. 7 is a flowchart showing nozzle change examination processing according to the present embodiment (second embodiment).

  In step S <b> 311, the changing unit 240 refers to the defect rate shown in FIG. 4, extracts one defect rate “Pm′n ′” based on a predetermined order, and extracts the extracted defect rate “Pm′n ′”. Is added to the defect rate “Pmn” exceeding the above-described threshold. Here, “Pm′n ′” is a combination of a different nozzle and feeder with respect to “Pmn”.

  In step S312, the changing unit 240 calculates “Pmn ′ + Pm′n” when the combination is changed between the single defect rates “Pm′n ′” and “Pmn” extracted in step S311.

  In step S313, the changing unit 240 performs a process of subtracting “Bf” from “Af” calculated in steps S311 and S312. Here, “Af” is a defective rate after changing the combination (expected defective rate), and “Bf” is a current defective rate.

  In step S314, the changing unit 240 determines whether “Af−Bf” calculated in step S313 is already stored in the storage unit (not shown). That is, in this process, the changing unit 240 determines whether or not the processes in steps S311 to S313 are performed for another defect rate “Pm′n ′”. In this process, if the changing unit 240 determines that “Af-Bf” has already been stored, the process proceeds to step S315. On the other hand, in this process, if the changing unit 240 determines that “Af-Bf” is not stored, the process proceeds to step S316.

  In step S315, the changing unit 240 determines whether or not the current “Af−Bf” is smaller than the previously stored “Af−Bf”. In this process, if the changing unit 240 determines that the current “Af−Bf” is a smaller value, the process proceeds to step S316. On the other hand, in this process, when the changing unit 240 determines that the current “Af−Bf” is larger, the change unit 240 moves the process to step S311 and performs the next defect rate “Pm′n ′”. On the other hand, the processing from step S311 to step S314 is performed. In this process, the changing unit 240 uses the already stored value when “Af−Bf” already stored and “Af−Bf” this time are the same value.

  In step S316, the changing unit 240 performs processing for updating the storage unit. In this process, when it is determined in step S315 that the current “Af−Bf” is a smaller value, the changing unit 240 changes the current “Af−Bf” from the previously stored “Af−Bf”. -Bf "is rewritten. In addition, when it is determined in step S314 that no value is stored in the storage unit, the changing unit 240 performs a new process of storing the current value. As a result, the smallest value is stored in the storage unit.

  In step S317, the changing unit 240 determines whether or not the processes in steps S311 to S315 have been performed for all the defect rates “Pm′n ′” in the defect rate “Pm′n ′” illustrated in FIG. Determine. In this process, when the changing unit 240 determines that the process has been performed for all the defect rates “Pm′n ′”, the current process ends. On the other hand, in this process, if the changing unit 240 determines that the process has not been performed for all the defect rates “Pm′n ′”, the process returns to step S311 and the next defect rate “Pm Processing is performed on “n”. In this nozzle change examination process, when changing the nozzle, the combination that reduces the defective rate most when the nozzle is changed is selected. Returning to FIG. 6, the description of the combination changing process will be continued.

  In step S340, the changing unit 240 performs a nozzle changing process. In this process, the changing unit 240 changes the combination of the nozzle and the feeder based on the value stored in step S316.

  The program for executing each process in the present embodiment is stored in a computer-readable recording medium such as a flexible disk, a CD-ROM, or an MO, and distributed, and the program is installed in the computer, so that You may comprise the apparatus which performs these processing operations. “CD-ROM” is an abbreviation for “Compact Disk Read-Only Memory”. “MO” is an abbreviation for “Magneto-Optical disk”.

  As described above, the component mounting apparatus 200 according to the present embodiment assumes a case where the nozzle to be changed and the nozzle to be changed are exchanged, and changes the combination to the combination with the lowest defect rate from among the exchanged combinations. .

  Thereby, in this embodiment, when changing the combination of the nozzle and the feeder, the number of times of use of each nozzle is not changed before and after the change of the combination, and it is possible to suppress a deviation in the number of times of use of a single nozzle. Become.

  Therefore, according to the present embodiment, when changing the combination of the nozzle and the feeder, the deviation of the number of times of use of a single nozzle is suppressed and the value of the defective rate is lowered, so that the mounting time is not affected. Moreover, the reduction in productivity can be suppressed.

(Third embodiment)
Next, another embodiment (third embodiment) of the present invention will be described with reference to FIGS. In addition, the component mounting apparatus of this embodiment differs in the point which added the feeder change examination process in the combination change process with respect to the component mounting apparatus 200 of the above-mentioned 2nd Embodiment. Further, the component mounting apparatus according to the present embodiment is different in that the comparison result of the nozzle change examination process and the feeder change examination process is compared, and the combination of the nozzle and the feeder with the lowest defect rate is changed. Accordingly, the same portions as those in the second embodiment described above are denoted by the corresponding reference numerals and description thereof is omitted.

  First, the change procedure of the combination of a nozzle and a feeder is demonstrated using FIG.8 and FIG.9. FIG. 8 is a flowchart of the combination change process according to the present embodiment (third embodiment). FIG. 9 is a flowchart of the feeder change examination process according to the present embodiment (third embodiment).

  In step S310, when the changing unit 240 determines in step S200 shown in FIG. 5 that the defect rate “Pmn” exceeds the predetermined threshold value “Pth”, the changing unit 240 moves the routine to this combination changing process, and changes the nozzle. Perform the review process. In this nozzle change examination process, it is examined which nozzle is most suitable for the change among a plurality of nozzles to be changed. The nozzle change examination process is the same as the nozzle change examination process in FIG.

  In step S320, feeder change examination processing is performed. In this feeder change examination process, it is examined which of the plurality of feeders to be changed is suitable for the change. Here, the feeder changing process will be described with reference to FIG. FIG. 9 is a flowchart showing the feeder change examination process.

  In step S321, the changing unit 240 extracts one defect rate “Pm′n” based on a predetermined order, and the defect rate “Pmn” exceeding the above threshold from the extracted defect rate “Pm′n”. "Is subtracted. Here, “Pm′n” is a combination of the same nozzle and a different feeder with respect to “Pmn”.

  In step S322, the changing unit 240 determines whether or not the value calculated in step S321 is already stored in a storage unit (not shown). That is, in this process, the changing unit 240 determines whether or not the process of step S321 is performed for another defect rate “Pm′n”. In this process, if the changing unit 240 determines that it has already been stored, the process proceeds to step S323. On the other hand, in this process, if the changing unit 240 determines that it has not been stored, it moves the process to step S324.

  In step S323, the changing unit 240 determines whether or not the current value is smaller than the already stored value. In this process, when the changing unit 240 determines that the current value is smaller, the process proceeds to step S324. On the other hand, in this process, when the changing unit 240 determines that the current value is smaller, the process returns to step S321, and the above step is performed for the next defect rate “Pm′n”. The process of S321 and step S322 is performed. In this process, the changing unit 240 uses the already stored value when the already stored value and the current value are the same value.

  In step S324, the changing unit 240 performs processing for updating the storage unit. In this process, when it is determined in step S323 that the current value is a small value, the changing unit 240 performs a process of rewriting the already stored value to the current value. In this process, if it is determined in step S322 that no value is stored in the storage unit, the changing unit 240 performs a process of storing a new value this time. As a result, the smallest value is stored in the storage unit.

  In step S325, the changing unit 240 determines whether or not the processing in steps S321 to S323 has been performed for all the defect rates “Pm′n” in the defect rate “Pm′n” illustrated in FIG. judge. In this process, when the changing unit 240 determines that the process has been performed for all the defect rates “Pm′n”, the current process ends. On the other hand, in this process, if the changing unit 240 determines that the process is not performed for all the defect rates “Pm′n”, the process returns to step S321, and the next defect rate “Pm ′”. n ”. In this attached feeder change examination process, when changing the feeder, the combination that reduces the defective rate most when the feeder is replaced with the changed feeder is selected. Returning to FIG. 6, the description of the combination changing process will be continued.

  In step S330, the changing unit 240 compares the values stored in the storage unit in steps S316 and S324. The changing unit 240 determines whether or not the value stored in step S316 is smaller than the value stored in step S324. In this process, when the changing unit 240 determines that the value stored in step S316 is smaller than the value stored in step S324, the process proceeds to step S340. On the other hand, in this process, if the changing unit 240 determines that the value stored in step S316 is greater than the value stored in step S324, the process proceeds to step S350.

  In step S340, the changing unit 240 performs a nozzle changing process. In this process, the changing unit 240 changes the combination of the nozzle and the feeder based on the value stored in step S316.

  In step S350, the changing unit 240 performs a feeder changing process. In this process, the changing unit 240 changes the combination of the nozzle and the feeder based on the value stored in step S324.

  Thereby, in this embodiment, since it is examined whether it is better to change the nozzle or the feeder than the second embodiment described above, the combination option that reduces the defective rate is selected. It becomes possible to increase.

  Hereinafter, as an example of changing the combination of the nozzle and the feeder based on the above-described processing, the combination change in the case where the defect rate P5b due to the combination of the feeder 5 and the nozzle b is larger than a predetermined defect rate threshold value Pth. An example will be described. In addition, when changing the feeder 5, since the feeder 5 is supplying the component B, it changes to the feeder 4 or the feeder 6 which supplies the component B. FIG.

  Therefore, when changing the combination, there is a combination of changing to a combination of the feeder 5 and the nozzle a or nozzle c or changing to a combination of the feeder 4 or the feeder 6 and nozzle b. And it becomes possible to lower a defect rate by changing into a combination with the smallest defect rate from these combinations.

  However, when a combination that changes the nozzle b to the nozzle a or the nozzle c is selected, as described above, it is possible to change to a combination with a low defect rate. However, the number of times the nozzle a or the nozzle c is used is increased. End up.

  On the other hand, in this embodiment, as described below, for example, when the nozzle b is changed to the nozzle a, the defective rate after the change is P5a with respect to the defective rate P5b before the change. At this time, from P1b to P9b, excluding P5b, the combination that reduces the defect rate when the nozzle a is changed to the nozzle b is selected. For example, it is assumed that the defective rate is the lowest when P9a is changed to P9b. From this, the combination after change is P5a and P9b, and the value obtained by adding the defect rates of P5b and P9a, which is the combination before change, is subtracted from the value obtained by adding these failure rates. Thus, when changing the combination, the nozzles are alternately replaced before and after the change to match the number of times the nozzle is used. Thereby, the concentration to a specific nozzle is eased.

  This can be expressed by the following equation. First, when the difference in defect rate before and after the combination change is ΔP1, it can be expressed by the following equation (1).

ΔP1 = P5a + Pm′b− (P5b + Pm′a) (1)
Note that m ′ is a natural number of 1 to 9 (excluding 5).

  Similarly, when the difference in the defect rate when changing to the nozzle c is ΔP2, it can be expressed by the following equation (2).

ΔP2 = P5c + Pm′b− (P5b + Pm′c) (2)
Next, a case where the feeder is changed will be described.

  Unlike the case of the nozzle, the increase in the number of times the feeder is used has little effect on the loading time, and therefore it is considered that there is no problem even if the number of times each feeder is used varies. Therefore, when the feeder 5 is changed to the feeder 4 or the feeder 6 and the difference in the defect rate before and after the combination change is ΔP3 and ΔP4, they can be expressed by the following equations (3) and (4). .

ΔP3 = P4b−P5b (3)
ΔP4 = P6b−P5b (4)
By using these formulas (1) to (4), the difference in the defective rate before and after the combination change is calculated, and the smallest feeder / nozzle combination is set as a new feeder / nozzle combination. That is, in this embodiment, assuming a case where a combination of nozzles exceeding a predetermined threshold and a combination of nozzles to be changed are recombined, the recombination combination is changed to the combination with the smallest defect rate. .

Next, an example of the defect rate with respect to the combination of the nozzle and the feeder will be described with reference to FIG. FIG. 10 is a diagram illustrating an example of a defect rate with respect to a combination of a nozzle and a feeder in the component mounting apparatus 200 according to the present embodiment (third embodiment). Here, the unit of the defect rate in the combination is [ppm], and the threshold value Pth is 2.0 [ppm]. As illustrated in FIG. 10, the defect rate P5b due to the combination of the feeder 5 and the nozzle b is larger than the threshold value of 2.0 [ppm], and therefore the combination is changed. “Ppm” is an abbreviation for “Parts Per Million”. That is, as described above, the defect rate is a value obtained by multiplying the value shown in FIG. 10 by 10 ⁻⁶ .

From the above formula (1),
ΔP1 = P5a + Pmb− (P5b + Pma) = − 1.3 + Pmb−Pma, and Pmb−Pma is the smallest when m = 9.
ΔP1 = −1.5 (1) ′.

From the above equation (2),
ΔP2 = P5c + Pmb− (P5b + Pmc) = − 1.0 + Pmb−Pmc Pmb−Pmc is smallest when m = 7,
ΔP2 = −1.1 (2) ′.

From the above equation (3),
ΔP3 = P4b−P5b = −0.8 (3) ′.

From the above equation (4),
ΔP4 = P6b−P5b = −1.1 (4) ′.

  From these equations (1) ′ to (4) ′, it can be seen that ΔP1 has the smallest value. Therefore, the combination of the feeder 5 and the nozzle b is changed to the combination of the feeder 5 and the nozzle a, and the feeder 9 and the nozzle a are combined. And a combination of nozzle b.

  As described above, in the present embodiment, assuming that the nozzle to be changed and the nozzle to be changed are replaced, the combination is changed to the combination with the lowest defective rate among the replaced combinations.

  For this reason, in this embodiment, when changing the combination of the nozzle and the feeder, the number of times of use of each nozzle is not changed before and after the change of the combination, and it is possible to suppress a deviation in the number of times of use of a single nozzle. Become.

  Therefore, according to the present embodiment, when changing the combination of the nozzle and the feeder, the bias of the number of times of use of a certain nozzle is suppressed, and the influence on the mounting time is suppressed by lowering the value of the defective rate. Reduction of productivity can be suppressed.

DESCRIPTION OF SYMBOLS 100 Component mounting apparatus 130 Parameter output part 140 Setting part

Claims (10)

Corresponding to each of a combination of each of the plurality of feeders including the first feeder and the second feeder and each of the plurality of nozzles for supplying parts to the plurality of nozzles including the first nozzle and the second nozzle Parameter output means for outputting a parameter value relating to the defective rate to be
A predetermined function that outputs a value corresponding to the quality of the combination of the parameter values relating to each combination of the first nozzle and the first feeder, and the second nozzle and the second feeder. Better among the values of the function of the combination of the values of the parameters and the values of the parameters relating to the respective combinations of the first nozzle and the second feeder and the second nozzle and the first feeder Setting means for setting a combination of the nozzle and the feeder to a value indicating that
A component mounting apparatus comprising: The setting means includes
The value of the parameter relating to the combination of the first nozzle and another feeder including the second feeder that supplies the same parts as the first feeder, and the value of the function,
Set a combination of the nozzle and the feeder to give a value indicating better.
The component mounting apparatus according to claim 1.
Relates value before Kipa parameter, to indicate that the smaller the better, further comprising determining means for determining whether more than a predetermined value indicating the quality of the value of the said parameter,
The setting means, if it is determined that the value of the previous Kipa parameter exceeds a predetermined value by the determination means sets the combination of the said nozzle feeder,
The component mounting apparatus according to claim 1, wherein the component mounting apparatus is a component mounting apparatus. Further comprising a calculating means for calculating the value before Kipa parameters,
The parameter output means outputs a value before Kipa parameters calculated by the calculation means,
The component mounting apparatus according to claim 3. The plurality of nozzles includes at least one other nozzle in addition to the first nozzle and the second nozzle,
The setting means depends on the combination of the parameter values relating to each combination of the first nozzle and the first feeder, and the second nozzle or another nozzle and the second feeder. the value of the predetermined function for outputting a value, the first nozzle and the second feeder, and one of the second nozzles or other nozzles, used in outputting the value of said predetermined function The combination of the nozzle and the feeder is set to give a value indicating that the function value of the combination of the parameter values relating to each combination of the nozzle and the first feeder is good. ,
The component mounting apparatus according to claim 3, wherein the component mounting apparatus is a component mounting apparatus. The setting means sets a combination of the nozzle and the feeder to give a value indicating that it is the best among the values of the function.
The component mounting apparatus according to claim 5. It said determination means before if the value of Kipa parameter is determined not to exceed a predetermined value, after a predetermined time, again, the value before Kipa parameter determines whether exceeds a predetermined value ,
The component mounting apparatus according to claim 3, wherein the component mounting apparatus is a component mounting apparatus. Storage means for storing the value of the parameter relating to the combination of the nozzle and the feeder set by the setting means;
The determination unit determines whether or not the value of the parameter stored by the storage unit exceeds the predetermined value;
The component mounting apparatus according to claim 3, wherein the component mounting apparatus is a component mounting apparatus. A defect rate corresponding to each of a combination of each of the plurality of feeders including the first and second feeders and each of the plurality of nozzles for supplying parts to the plurality of nozzles including the first and second nozzles Output the parameter value,
A predetermined function that outputs a value corresponding to the quality of the combination of the parameter values relating to each combination of the first nozzle and the first feeder, and the second nozzle and the second feeder. Among the values of the functions of the combinations of the values of the parameters and the values of the parameters relating to the combinations of the first nozzle and the second feeder, and the second nozzle and the first feeder, respectively. Set the combination of the nozzle and the feeder to give a value indicating
A component mounting method characterized by the above. On the computer,
A defect rate corresponding to each of a combination of each of the plurality of feeders including the first and second feeders and each of the plurality of nozzles for supplying parts to the plurality of nozzles including the first and second nozzles Parameter output processing that outputs the parameter value;
A predetermined function that outputs a value corresponding to the quality of the combination of the parameter values relating to each combination of the first nozzle and the first feeder, and the second nozzle and the second feeder. Among the values of the functions of the combinations of the values of the parameters and the values of the parameters relating to the combinations of the first nozzle and the second feeder, and the second nozzle and the first feeder, respectively. A setting process for setting a combination of the nozzle and the feeder is performed on a person who gives a value indicating
A program characterized by that.

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