JP4045119B2 - Component mounting setting method, computer program, and recording medium - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a component mounting setting method for setting a mounting order of components transported and mounted by a mounting head, and a program and a recording medium for causing a computer to set a mounting order of components transported and mounted by a mounting head.
[0002]
[Prior art]
In a component mounting apparatus that mounts components such as electronic components on a substrate or the like, a component supplied from a feeder (component supply unit) such as a tape feeder is attracted by a mounting head, and is transported and mounted to a mounting position on the substrate. The operation is repeated. In order to increase the efficiency of this operation, a plurality of suction nozzles for sucking parts may be provided in the mounting head. By providing a plurality of suction nozzles, it is possible to carry and mount the same number of components as the suction nozzles during one reciprocation between the substrate and the feeder. In the case where a plurality of suction nozzles are provided in the mounting head, the number of parts of adjacent feeders is set to be approximately equal so that a plurality of parts can be sucked simultaneously.
[0003]
[Problems to be solved by the invention]
Further, by providing a plurality of mounting heads, it is possible to carry and mount a plurality of components during one reciprocation between the substrate and the feeder. For example, as shown in FIG. 17, the components stored in the feeder 50 or the tray 51 can be transported and mounted to the mounting position on the substrate 48 using the two mounting heads 40R and 40L. By using the plurality of mounting heads 40R and 40L, a plurality (two in the case of FIG. 17) of parts can be transported and mounted during one reciprocation between the substrate 48 and the feeder 50.
[0004]
The mounting heads 40R and 40L can move independently in the long axis direction (X direction) of the beam 42, but cannot approach each other more than the closest approach distance d as shown in FIG. Here, the closest approach distance d is not the closest approach distance between the mounting heads 40R and 40L but the feeder 50 interval corresponding to the closest approach distance between the mounting heads 40R and 40L. Since the closest approach distance d is 5 to 7 times the feeder 50 interval, unlike the mounting head provided with the plurality of suction nozzles described above, a plurality of components cannot be sucked simultaneously from the adjacent feeders. When picking up a component from an adjacent feeder, retract one mounting head and suck one component with the other mounting head, then retract the other mounting head and suck the other component with one mounting head Two-stage adsorption is required, and more than twice as long as the simultaneous adsorption.
[0005]
  The present invention has been made in view of such circumstances, and different mounting heads are allocated, and the arrangement interval corresponds to the closest approach interval of the mounting head.More thanIt is an object of the present invention to provide a component mounting setting method, a computer program, and a recording medium that can reliably and simultaneously attract components of the same group by each mounting head by grouping the components.
[0006]
In addition, the present invention obtains the number of combinations of parts that can be grouped for each part, and performs grouping from parts with a small number of combinations to group even parts with a small number of combinations with high probability. An object of the present invention is to provide a component mounting setting method and a computer program that can increase the number of components that can be performed.
[0007]
In addition, the present invention is a component mounting setting that can shorten the transport time and improve the transport and mounting efficiency of components by changing the mounting order of components so that the moving distance of the mounting head is minimized. It is an object to provide a method and a computer program.
[0008]
[Means for Solving the Problems]
  In the component mounting setting method according to the first aspect of the present invention, components supplied from a plurality of component supply units are taken out by a plurality of independently movable mounting heads having a limited distance that can approach each other, conveyed to a component mounting position, and In the component mounting setting method for setting the mounting order of each component when mounting, a step of assigning a mounting head to each component supplied from a component supply unit, and a different mounting head that can move independently with respect to the mounting head Is assigned, and the parts in the same group as the step of grouping parts wider than the arrangement interval corresponding to the closest approach distance when the installation head is brought closest within the limit are simultaneously taken out by each installation head. Set the mounting order of each part so that it can be transported and mountedAnd a step of obtaining, for each part, the number of combinations of parts that can be grouped based on the closest approach interval, wherein the grouping step includes the parts having the smallest number of combinations and the parts A mounting head different from the above is assigned, and the parts whose arrangement intervals with the parts satisfy the closest approach distance and become the smallest are grouped.Features.
[0010]
  A component mounting setting method according to a second aspect of the present invention is the component mounting setting method according to the first aspect of the present invention, whereinTo minimize the distance traveledThe method further includes the step of changing the mounting order of the components.
[0011]
  A computer program according to a third aspect of the present invention takes out a component supplied from a plurality of component supply units with a plurality of independently movable mounting heads that are limited in the distance that they can approach each other, and transports and mounts the component to a component mounting position. In the computer program for causing the computer to set the mounting order of each component at the time, a procedure for causing the computer to allocate a mounting head to each component supplied from the component supply unit, and for the computer to be independent of the mounting head A different mounting head that is movable is assigned, and a procedure for grouping parts wider than the arrangement interval corresponding to the closest approach distance when the installation head is closest to the installation head within the limits, Set the mounting order of each part so that the parts can be picked up simultaneously by each mounting head and transported and mounted.And a procedure for causing a computer to obtain the number of combinations of parts that can be grouped for each part based on the closest approach interval. The procedure for grouping includes causing the computer to minimize the number of combinations. The method includes a step of grouping a component and a component in which a mounting head different from the component is allocated, and a component whose arrangement interval with the component satisfies the closest approach interval and becomes the smallest.
[0013]
  According to a fourth aspect of the present invention, there is provided a computer program according to the third aspect, wherein the mounting head relating to the transportation and mounting of parts is connected to the computer.To minimize the distance traveledThe method further includes a procedure of changing the mounting order of the parts based on the movement distance.
[0014]
  In the fifth inventionAccording to the recording medium, the components supplied from a plurality of component supply units are taken out by a plurality of mounting heads having a limited distance from each other and transported to and mounted at the component mounting position. In a computer-readable recording medium on which a computer program to be set is recorded, a procedure for causing a computer to assign a mounting head to each component supplied from a component supply unit, and a computer having a different mounting head Allocating the same group of parts to each mounting head at the same time as the computer and the procedure for grouping parts wider than the arrangement interval corresponding to the closest approach distance when the assigned head is closest to the mounting head within the limits. To set the mounting order of each part so that it can be taken out and transported and mounted.And a procedure for causing a computer to obtain the number of combinations of parts that can be grouped for each part based on the closest approach interval. The procedure for grouping includes causing the computer to minimize the number of combinations. A procedure for grouping a component and a component to which a mounting head different from the component is assigned and whose arrangement interval with the component satisfies the closest approach interval and becomes the smallestThe computer program which contains is recorded.
[0015]
  In the first, third and fifth inventions,A mounting head is assigned to each component supplied from the component supply unit. Preferably, the total of parts to which each mounting head is assigned (parts total) is made equal. The total parts assigned to each mounting head are preferably equal, but are not always equal. In that case, the mounting heads are allocated so that the difference in the total of the components to which the mounting heads are allocated becomes small. When the total number of components assigned to each mounting head is equal, the variation in the number of components that each mounting head conveys and mounts is reduced, and the number of components that can be simultaneously picked up can be increased. In addition, different mounting heads are allocated, and by grouping parts whose arrangement interval is larger than the arrangement interval corresponding to the closest approach interval of the installation head, the components in the same group are surely and simultaneously attracted by each installation head. be able to. The parts can be transported and mounted efficiently by setting the mounting order of the parts so that the parts in the same group are sucked (taken out) and transported and mounted simultaneously by each mounting head. it can.
[0016]
  In the first, third and fifth inventions,By determining the number of combinations of components that can be grouped for each component based on the closest approach interval, it is possible to determine the difficulty of grouping each component (the number of opponents that can be grouped). The number of opponents that can be grouped by grouping the parts with the smallest number of combinations and the parts to which the mounting heads different from the parts are allocated and the arrangement interval with the parts is the narrowest after satisfying the closest approach distance Even parts with a small amount can be grouped with high probability, and the number of parts that can be simultaneously picked up can be increased.
[0017]
  In the second and fourth inventions,By setting the mounting order of the components in each group so that the moving distance of the mounting head related to the transport and mounting of components is minimized, the transport time can be shortened and the transport and mounting efficiency of the components can be improved. . To change the component mounting order, it is possible to change the component mounting order within a group, or to change the component mounting order for each group.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be specifically described with reference to the drawings showing embodiments thereof.
FIG. 1 shows an outline of a component mounting apparatus 20 that sets a component mounting order by the component mounting setting method according to the present invention and mounts components supplied from a feeder (component supply unit) on a board in the set mounting order. Show. The component mounting apparatus 20 includes a component mounting unit 22 that performs component mounting and the like, and a calculation unit 10 that performs setting of the component mounting order and the like. FIG. 17 shows a part 22 a of the component mounting portion 22.
[0019]
In FIG. 17, the mounting heads 40R and 40L are independently movable in the axial direction (X direction) of the beam 42, and the mounting heads 40R and 40L and the beam 42 are in the long axis direction (Y direction) of the beam 44. Can be moved to. Components to be mounted on the substrate 48 are stored in the feeder 50 or the tray 51. Each feeder 50 stores one type of component. The feeder 50 is arranged in parallel with the axial length direction of the beam 42. The components supplied from the feeder 50 are sucked by the mounting heads 40R and 40L, and conveyed and mounted to the mounting position on the substrate 48. At this time, the setting of the component mounting order, the mounting position, the arrangement of each feeder 50, and the like are performed by the arithmetic unit 10 and an instruction is sent to the component mounting unit 22.
[0020]
The arithmetic unit 10 includes a CPU (Central Processing Unit) 11, a RAM (Random Access Memory) 12 such as a DRAM, an auxiliary storage unit 13 such as a hard disk, and an external storage unit 14 such as a flexible disk drive or a CD-ROM drive. , An input unit 15 such as a keyboard, an output unit 16 such as a monitor and a printer, and a communication unit 17 that performs communication control with the component mounting unit 22.
[0021]
The CPU 11 controls the above-described units 12 to 17 of the calculation unit 10. The CPU 11 stores data received from the input unit 15 or the communication unit 17, a program or data read from the auxiliary storage unit 13 or the external storage unit 14 in the RAM 12, and executes the program stored in the RAM 12 or calculates data. Various processes such as these are performed, and various processing results or temporary data used for various processes are stored in the RAM 12. Data such as calculation results stored in the RAM 12 is stored in the auxiliary storage unit 13 or output from the output unit 16 or the communication unit 17 by the CPU 11.
[0022]
Information relating to the board 48, information relating to components to be mounted on the board 48, information relating to the feeder 50, information relating to the specifications of the component mounting portion 22, etc. are stored in the auxiliary storage means 13. An example of feeder information related to the number of parts supplied to the feeder 50 is shown in FIG. The feeder information includes a feeder number for identifying each feeder, a component number for identifying a component supplied from each feeder, the number of component mounting points, and a head for conveying and mounting each feeder component (L, R in this description). Or LR) and a feeder position number identifying the feeder position where the feeder is set. However, “L” is the mounting head 40L, “R” is the mounting head 40R, and “LR” is the mounting heads 40L and 40R. The feeder position number can be given in ascending order (1, 2, 3,...) From the left end side in the X direction in FIG.
[0023]
An example of supply component information relating to components supplied from each feeder is shown in FIG. The supplied part information includes a feeder part number for identifying each part in the feeder, a storage position of each part in the feeder, a mounting position of each part, and the like. Feeder information and supply component information are stored in the auxiliary storage means 13.
[0024]
The CPU 11 assigns the mounting head 40L or 40R to each component supplied from the feeder (component supply unit) 50 so that the total number of components conveyed and mounted by the mounting heads 40L and 40R is equalized. In this description, the mounting heads 40L and 40R are assigned with the feeder 50 as a basic unit. The assigned mounting head (L, R, or LR) is stored in the “mounting head” of the feeder information by the CPU 11.
[0025]
The CPU 11 assigns different mounting heads, groups components whose arrangement interval is larger than the arrangement interval corresponding to the closest approach interval between the installation heads 40L and 40R (hereinafter referred to as the closest approach interval d), and sets the grouped components to the RAM 12 or Store in the auxiliary storage means 13. In this description, since there are two mounting heads, parts are paired and the paired parts are stored in the pair information.
[0026]
Further, the CPU 11 obtains the number of combinations of components (number of counterpart components) that can be grouped (paired) for each component based on the closest approach interval d. Different mounting heads are assigned, and a part whose arrangement interval with the part satisfies the closest approach distance d and becomes the narrowest is set as a pair. The set pair is stored in the pair information by the CPU 11.
[0027]
An example of pair information stored in the RAM 12 or the auxiliary storage means 13 is shown in FIG. The pair information includes one (left side) feeder part number L and feeder number L of the paired part, and the other (right side) feeder part number R and feeder number R.
[0028]
After determining the pair, the CPU 11 sets the mounting order of the parts so that the parts of the same group are simultaneously sucked and transported and mounted by the mounting heads, and the set mounting order (mounting order data) is set. The data is stored in the RAM 12 or the auxiliary storage unit 13. For example, as shown in FIG. 4, when 10 parts are respectively transported and mounted from feeders of feeder numbers 4, 10, and 16, for example, 5 parts of feeder numbers 10 and 16 are sequentially mounted (pairing 1 Then, the five parts with feeder numbers 4 and 16 can be sequentially mounted (pairing 2), and the five parts with feeder numbers 4 and 10 can be sequentially mounted (pairing 3).
[0029]
Further, the CPU 11 changes the mounting order of the components in each group based on the movement distances of the mounting heads 40L and 40R related to the conveyance and mounting of the components. The changed mounting order is stored in the RAM 12 or auxiliary storage means. Actually, the previously set mounting order (mounting order data) is updated. The movement distance can be calculated by the CPU 11 based on the “feeder position number” and “mounting head” of the feeder information and the “storage position” and “mounting position” of the supply component information.
[0030]
A computer program recorded on a recording medium 19 such as a CD-ROM is read from the external storage means 14 to the RAM 12 and executed by the CPU 11, or a computer program recorded on the recording medium 19 is read by the external storage means 14 and auxiliary storage means. The CPU 11 can be operated as each unit described above by causing the CPU 11 to execute the computer program stored in the memory 13 and read from the auxiliary storage unit 13 to the RAM 12.
[0031]
Next, setting of a component mounting order using the component mounting setting method according to the present invention will be described.
FIG. 5 shows an outline of the procedure for setting the component mounting order. First, the mounting heads 40R and 40L for transporting and mounting each component are determined by the CPU 11 of the calculation unit 10 so that the total of the components transported and mounted by the mounting heads 40L and 40R is equal (S10). Next, the CPU 11 determines a pair of components that are simultaneously picked up by the mounting heads 40R and 40L (S12), improves the determined pair (S14), and determines the mounting order (S16).
[0032]
An example of determining the mounting head (S10) is shown in FIGS. 6 (a) and 6 (b). In this description, as shown in FIG. 6A, the procedure for setting the mounting order will be described using 16 feeder arrays as an example. Each feeder is assigned a feeder number of 1 to 16. In addition, the feeder numbers 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 include 5, 1, 1, 2, 2, respectively. , 3, 2, 4, 13, 1, 1, 2, 2, 3, 6, 8 (a total of 56 parts) are stored.
[0033]
Since the total number of parts stored in the feeder 50 is 56, 28 parts are allocated to the mounting heads 40R and 40L, respectively. However, as shown in FIG. 6B, due to the closest approach distance d between the mounting heads 40R and 40L, there is a feeder that can be sucked simultaneously only by one of the mounting heads 40R or 40L. In the example of FIG. 6B, the feeder numbers 1 to 6 can simultaneously suck only the mounting head 40L, and the feeder numbers 11 to 16 can only suck the mounting head 40R simultaneously. Normally, as shown in FIG. 6B, each feeder 50 is divided into two feeder groups having an equal number of parts, and the mounting heads 40R and 40L are allocated to the feeder groups, respectively.
[0034]
For example, the CPU 11 reads the feeder information from the auxiliary storage means 13 to the RAM 12, and the total number of parts is equalized, for example, as shown in FIG. The mounting heads (L, R, LR) assigned to each feeder are set by dividing into two feeder groups, and the set mounting heads are stored in the feeder information.
[0035]
In the example of FIG. 6B, 8 parts of the feeder number 9 are assigned to the mounting head 40L and 5 parts are allocated to the mounting head 40R. Hereinafter, among the feeders having the feeder number 9, eight parts groups assigned to the mounting head 40L are virtually called feeder numbers 9L, and five parts groups assigned to the mounting head 40R are virtually called feeder numbers 9R.
[0036]
As described above, by equally assigning the components arranged at intervals wider than the closest approach interval d to the mounting heads 40L and 40R, the number of components that can be simultaneously picked up by the mounting heads 40R and 40L can be increased. For example, when the total number of parts is 57, 28 parts and 29 parts are assigned to the mounting heads 40R and 40L, so one part cannot be picked up simultaneously. Depending on the closest distance d and the number of parts in each feeder, some parts may not be picked up simultaneously.
[0037]
FIG. 7 shows an outline of the procedure for determining a pair (S12 in FIG. 5). First, for each feeder, the CPU 11 calculates the number of parts that can be picked up simultaneously (the number of pieces that can be picked up simultaneously) (S20). In addition, the CPU 11 calculates the number of parts that can be picked up in two stages (the number of parts that can be picked up in two stages) (S22). Hereinafter, “two-stage adsorption is possible” means that simultaneous adsorption is not possible, but two-stage adsorption is possible.
[0038]
Based on the number of simultaneously pickable parts, the CPU 11 determines (pairing) a pair of parts that can be picked up simultaneously (S24). Further, based on the number of two-stage suckable parts, the CPU 11 determines (pairing) a pair of parts that can be two-stage picked up (cannot be picked up simultaneously) (S26). Thereafter, the parts that could not be paired are confirmed (S28).
[0039]
An example of calculation of the number of simultaneous adsorptions is shown in FIGS. As shown in FIG. 8A, the part with feeder number 3 can be sucked simultaneously with the parts with feeder numbers 9 to 16 separated by the closest approach distance d or more, and the number of simultaneously pickable parts is 28. Similarly, the component of feeder number 9R can be sucked simultaneously with the components of feeder numbers 1 to 3 separated by the closest approach distance d or more, and the number of simultaneously pickable is 7. Therefore, as shown in FIG. 8 (b), the number of simultaneously suckable each feeder is obtained. The CPU 11 calculates the number of simultaneously suckable feeders based on the feeder information read out to the RAM 12 and stores the calculation result in the RAM 12. For example, the feeder information can include the number of each feeder that can be sucked simultaneously.
[0040]
In addition, although the simultaneous suction cannot be performed, the CPU 11 can determine the number of two-stage suckable parts that can be picked up in two stages, similarly to the above-described simultaneous suction number. However, unlike the case of simultaneous suction, the number of two-stage suction is calculated based on the number of parts in the closest approach interval d.
[0041]
FIG. 9 shows an example of a pairing procedure (S24 in FIG. 7) for parts that can be picked up simultaneously. An example of pairing is shown in FIG. First, unpaired parts of each feeder (2 types 9L and 9R in the case of feeder number 9) are acquired (S40). For example, the CPU 11 reads the feeder information, the supply component information, and the pair information from the auxiliary storage unit 13 to the RAM 12, and acquires an unpaired component. The acquired unpaired parts and the number of parts are stored in the RAM 12. The CPU 11 sets a feeder whose number of unpaired parts is not zero as a reference feeder candidate (S42). For example, a flag indicating whether each feeder is a candidate for a reference feeder can be included in the feeder information and updated by the CPU 11.
[0042]
Next, a reference feeder is determined from the reference feeder candidates (S44). For example, the CPU 11 sets the feeder having the smallest number of simultaneous suctions as the reference feeder. For example, a flag indicating whether or not each feeder is a reference feeder can be included in the feeder information and updated by the CPU 11. In the example of FIG. 10, the feeder number 9R is determined as the reference feeder. If there is no reference feeder (S46: YES), pairing is terminated. If there are a plurality of reference feeder candidates (S48: YES), the CPU 11 selects a reference feeder from the candidates (S50). For example, when there are a plurality of reference feeders having the same number of simultaneous suctions, the feeder at the center (feeder number 9) side is determined as the reference feeder.
[0043]
After determining the reference feeder (S44, S46: NO, S48: NO), the pair feeder to be paired with the reference feeder is determined (S52). For example, based on the feeder information, component supply information, pair information, unpaired number, and the like stored in the RAM 12, the CPU 11 is assigned to the mounting head 40L, away from the feeder number 9 (9R) by at least the closest approach distance d. Among the feeders, a feeder that is closest to the reference feeder (feeder number 9) and has an unpaired number greater than zero is selected.
[0044]
In the example of FIG. 10, the feeder with the feeder number 3 on the center side among the feeder numbers 2 and 3 with the unpaired number of 1 is selected (pairing 0 in FIG. 10). When there is a pair feeder (S54: NO), parts are paired (S56). For example, the CPU 11 pairs the part with the feeder number 3 and the part with the feeder number 9R and stores them in the pair information.
[0045]
When there is an unpaired part in the reference feeder (S58: YES), as described above, the CPU 11 determines the pair feeder (S52), and performs pairing of the parts (S56). In the example of FIG. 10, the feeder with feeder number 2 is determined as a pair feeder and pairing is performed (pairing 1 in FIG. 10), and then the feeder with feeder number 1 is determined as a pair feeder and pairing is performed. (Pairing 2 in FIG. 10).
[0046]
In pairing 2 of FIG. 10, three parts are selected as a pair from five parts supplied from the feeder of feeder number 1. An example of the procedure for selecting such a pairing component is shown in FIG. First, the CPU 11 extracts the unpaired parts of the reference feeder and the unpaired parts of the pair feeder from the unpaired parts stored in the RAM 12 (S70, S72), and stores them in the RAM 12. If neither of the components is zero (S74: NO), the mounting coordinates (mounting position) of each extracted component are acquired (S76). For example, the mounting positions of five parts with feeder number 1 and three parts with feeder number 9L are extracted from the supply part information and stored in the RAM 12.
[0047]
Based on the mounting coordinates of the three parts of the reference feeder stored in the RAM 12, the CPU 11 determines the reference mounting coordinates (S78). For example, as shown in FIG. 12A, when three parts of the reference feeder are mounted at the mounting points R1, R2, and R3, the mounting head 40R is on the right side as illustrated in FIGS. Therefore, the leftmost mounting point R1 (with the smallest X coordinate) can be determined as the reference mounting coordinate. If the reference mounting coordinates are determined, the CPU 11 can calculate the pair reference mounting coordinates (pair reference point L0) separated by the closest approach distance dh.
[0048]
Based on the pair reference point L0, the pair mounting coordinates are determined from the mounting coordinates of the five parts of the pair feeder (S80). For example, when five parts of the pair feeder are mounted on the mounting points La, Lb, Lc, Ld, and Le, the CPU 11 determines the mounting point closest to the pair reference point L0 as a pair. However, as shown in FIG. 12B, since the mounting heads 40R and 40L can move simultaneously in the X-axis direction and the Y-axis direction, the movement distance from PO to P1 and the movement distance from P0 to P1 ′ are determined. It can be regarded as the same distance. Therefore, the larger of the X-direction distance and the Y-direction distance between the two points is used as the distance between the two points.
[0049]
When the pair mounting coordinates are determined, the CPU 11 stores the paired parts in the pair information (S82), and repeats the same process until the unpaired parts of the reference feeder or the pair feeder become zero (S74). . In the example of FIG. 12A, the pair attachment points R1 and La, R2 and Lb, and R3 and Ld are paired. By determining the pair of mounting points closest to the pair reference point L0, the moving distance from the mounting point of the first component to the mounting point of the second component is minimized, and mounting is performed at high speed. be able to.
[0050]
When there is no pair feeder (S54 in FIG. 9: YES) or when there is no unpaired part in the reference feeder (S58: NO in FIG. 9), the CPU 11 updates the candidate for the reference feeder (S60). The reference feeder is determined (S44). In the example of FIG. 10, the feeder of feeder number 10 is determined as a reference feeder, the feeder of feeder number 4 is determined as a pair feeder, and pairing is performed (pairing 3 in FIG. 10). Thereafter, the same processing is repeated until there is no reference feeder.
[0051]
Pairing of components capable of two-stage suction (S26 in FIG. 7) can be performed in the same manner, for example, according to the procedure shown in FIG. In FIG. 13, steps S40 to S60 are the same as those in FIG. However, in the determination of the reference feeder (S44a), the feeder having the smallest two-stage mountable number is selected as the reference feeder, and the determination of the pair feeder (S52a) is a pair of feeders that are farthest from the reference feeder and assigned to different mounting heads. Decide on a feeder.
[0052]
An example of the procedure for improving the pair (S16 in FIG. 5) is shown in FIG. First, the CPU 11 determines a reference pair (S90). If there is no reference pair (S92: YES), the process is terminated. If there is a reference pair (S92: NO), the CPU 11 determines a pair to be exchanged (S94). When there is no exchange target pair (S96: YES), the CPU 11 determines the next reference pair (S114), and when there is an exchange target pair (S96: NO), the pair is temporarily exchanged (S98).
[0053]
For example, as shown in FIG. 15, when there are N pairs, a pair with a pair number 1 (hereinafter, a pair with a pair number n is referred to as a pair n) and a pair 2, 3,. Temporarily replace in order. Next, pair 2 and pairs 3, 4,..., N (or pairs 1, 3, 4,..., N) are sequentially exchanged. Thereafter, in the same manner, all pairs are exchanged in order (temporary exchange). The CPU 11 stores a pair list as shown in FIG. 15 based on the pair information in the RAM 12. The pair numbers of the reference pair and the exchange target pair are also stored in the RAM 12 and updated by the CPU 11.
[0054]
When the evaluation for the simultaneous adsorption is improved by the exchange of the pair (S100: YES), the evaluation for the simultaneous adsorption is not improved and the evaluation other than the simultaneous adsorption is improved (S100: NO, S104: YES). The pair exchange is confirmed (S108), and the pair information is updated (S110). If the evaluation for simultaneous adsorption is not improved and evaluations other than simultaneous adsorption are not improved (S100: NO, S104: NO), the temporary exchange of the pair is discarded (S106).
[0055]
Evaluation for simultaneous adsorption and other than simultaneous adsorption is performed by the CPU 11. As an evaluation other than simultaneous adsorption, for example, as shown in FIG. 16, there is an intersection of the mounting heads 40L and 40R. In FIG. 16, when the parts A and B and the parts C and D are a pair, the mounting heads intersect when the parts C and D are transported, so that the mounting head needs to be retracted, and the transport time increases. However, by changing the pair to the parts A and D and the parts B and C, it is possible to eliminate the intersection of the mounting heads and improve the increase in the conveyance time due to the intersection. The intersection can be determined by the CPU 11 based on the “feeder position number” of the feeder information and the “storage position” and “mounting position” of the supply component information.
[0056]
Further, the mounting order of the components can be set so that the total movement distance of the mounting head related to the conveyance and mounting of the components is minimized. For example, the mounting order can be set so that the paired components are mounted in order from the smallest distance from the suction position to the mounting position. In addition, for the pair, so that the distance from the second mounting position of the pair that is mounted first to the suction position of the pair to be mounted will be mounted in order from the smaller distance, The mounting order can be set. The movement distance of the mounting head can be calculated by the CPU 11 based on the “mounting head” and “feeder position number” of the feeder information and the “storage position” and “mounting position” of the supply component information. In addition, it is possible to set the mounting order so as to avoid movement on parts having a thickness greater than or equal to a predetermined value, or to correct pairs of parts recognized by the same camera.
[0057]
After the pair temporary exchange is discarded (S106) or updated (S110), the next exchange target pair is determined (S112). Similarly, for all combinations of each reference pair and each pair to be exchanged, the pairs are exchanged according to the improvement in evaluation.
[0058]
【The invention's effect】
  According to the first, third and fifth inventions,By assigning different mounting heads and grouping parts whose arrangement interval is wider than the arrangement interval corresponding to the closest approach distance of the installation head, the components of the same group can be reliably and simultaneously attracted by each installation head, The parts can be transported and mounted efficiently.
[0059]
  According to the first, third and fifth inventions,By finding the number of combinations of parts that can be grouped for each part and performing grouping in order from parts with a small number of combinations, parts with a small number of combinations can be grouped with a high probability, and simultaneous suction is possible. The number of parts can be increased.
[0060]
  According to the second and fourth inventions,By setting the mounting order of components so that the moving distance of the mounting head related to the transport and mounting of components is minimized, the transport time can be shortened and the transport and mounting efficiency of the components can be improved.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an outline of a component mounting apparatus that sets a component mounting order by a component mounting setting method according to the present invention and mounts components supplied from a feeder on a board in the set mounting order.
FIG. 2 is a diagram showing an example of information stored in auxiliary storage means of a calculation unit
FIG. 3 is a diagram showing an example of information stored in auxiliary storage means of a calculation unit
FIG. 4 is a diagram illustrating an example of a component mounting order.
FIG. 5 is a flowchart showing an outline of a procedure for setting a component mounting order;
FIG. 6 is a diagram illustrating an example of determining a mounting head.
FIG. 7 is a flowchart illustrating an outline of a pair determination procedure.
FIG. 8 is a diagram illustrating an example of calculation of the number of simultaneous adsorptions possible.
FIG. 9 is a flowchart illustrating an example of a pairing procedure of components that can be simultaneously picked up.
FIG. 10 is a diagram illustrating an example of pairing.
FIG. 11 is a flowchart showing an example of a pairing component selection procedure.
FIG. 12 is a diagram illustrating an example of a pair determination method.
FIG. 13 is a flowchart showing an example of a part pairing procedure capable of two-stage suction.
FIG. 14 is a flowchart illustrating an example of a pair improvement procedure.
FIG. 15 is a diagram showing an example of pair exchange.
FIG. 16 is a diagram illustrating an example of pair improvement.
FIG. 17 is a diagram illustrating a part of a component mounting portion of the component mounting apparatus.
FIG. 18 is an enlarged view of a main part of a component mounting portion.
[Explanation of symbols]
10 Calculation unit
20 Component mounting device
22 Parts mounting part
40L, 40R mounting head
50 Feeder (part supply part)

Claims (5)

  Set the mounting order of components when picking up components supplied from multiple component supply units with multiple mounting heads that can be moved independently with limited distance to each other and transporting and mounting them to the component mounting position In the component mounting setting method, a step of allocating a mounting head to each component supplied from a component supply unit, and a different mounting head that can be moved independently of the mounting head are allocated, and an arrangement interval restricts the mounting head. In the step, the parts of the same group as the step of grouping parts wider than the arrangement interval corresponding to the closest approach distance at the time of the closest approach are taken out simultaneously by each mounting head and transported and mounted. A step of setting a mounting order; and a step of obtaining a number of combinations of components that can be grouped for each component based on the closest approach interval. The step of grouping is to group the parts having the smallest number of combinations and the parts to which a mounting head different from the parts is allocated and whose arrangement interval with the parts satisfies the closest distance and becomes the smallest. A feature component setting method. The component mounting setting method according to claim 1, further comprising a step of changing a mounting order of the components so that a moving distance of the mounting head relating to the conveyance and mounting of the components is minimized .   The mounting order of each component when the components supplied from a plurality of component supply units are taken out by a plurality of independently movable mounting heads that are limited in distance to each other and transported to and mounted on the component mounting position, In the computer program to be set by the computer, a procedure for causing the computer to assign a mounting head to each component supplied from the component supply unit, and a different mounting head that can be moved independently of the mounting head are allocated to the computer. , A procedure for grouping parts whose arrangement interval is wider than the arrangement interval corresponding to the closest approach distance when the mounting head is closest within the limit, and a component in the same group on each mounting head simultaneously A procedure for setting the mounting order of each part so that it is picked up, transported and mounted, and a computer based on the closest approach interval. And, for each part, a procedure for determining the number of combinations of parts that can be grouped. In the grouping procedure, a part having the smallest number of combinations and a mounting head different from the part are allocated to a computer. A computer program comprising: a step of grouping together components having an arrangement interval with the component that is the smallest and satisfying the closest approach interval. 4. The computer program according to claim 3 , further comprising a procedure for causing the computer to change the mounting order of the components so that the moving distance of the mounting head relating to the transportation and mounting of the components is minimized .   The mounting order of each component when the components supplied from a plurality of component supply units are taken out by a plurality of independently movable mounting heads that are limited in distance to each other and transported to and mounted on the component mounting position, In a computer-readable recording medium in which a computer program to be set by a computer is recorded, a procedure for causing a computer to assign a mounting head to each component supplied from a component supply unit; and And a computer for grouping parts wider than the arrangement interval corresponding to the closest approach distance when the arrangement head is allocated with different mounting heads that can be moved independently of each other In addition, the mounting order of the parts so that the parts in the same group are simultaneously taken out by the mounting heads and transported and mounted. And a procedure for causing the computer to determine the number of combinations of parts that can be grouped for each part based on the closest approach interval. The procedure for grouping includes: A computer program including a procedure for grouping the smallest part and a part to which a mounting head different from the part is assigned and whose arrangement interval with the part satisfies the closest distance and becomes the smallest is recorded. A computer-readable recording medium characterized by the above.

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