JPH1154991A - Component supply method of mounting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make the same mounting device usable to a plurality of kinds of printed boards, by setting feeder arrangement inside a component supply part unit by deciding arrangement of a feeder which supplies a component except a common component by optimization operation processing to a remaining space. SOLUTION: A feeder 4 which supplies a component except a common component among components to be mounted on a first kind of a printed board P is arranged in a remaining space except an arrangement part of a feeder 4 which supplies a common component inside a component supply part unit 3B, and the arrangement is decided by optimization operation processing. Arrangement of the feeder 4 which supplies a component except a common component among components to be mounted on remaining each kind of printed board P is decided one by one, by optimization operation processing to a remaining space and arrangement of the feeder 4 inside the component supply part unit 3B is set.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction nozzle in which a component supply unit having a plurality of feeders is provided in a component supply unit, and a printed circuit board to be processed is carried in and installed in a component mounting unit. The present invention relates to a component supply method in a mounting machine in which an electronic component such as an IC is attracted from the component supply unit by a head having a component and mounted on a predetermined position on a printed circuit board.

[0002]

2. Description of the Related Art Conventionally, an electronic component such as an IC is sucked from a component supply unit by a head having a suction nozzle, and is transferred onto a printed circuit board installed in a component mounting unit. Mounting machines designed to be mounted are generally known. In this mounting machine, a head unit having one or a plurality of heads is usually movable in the X-axis direction and the Y-axis direction. Also, in the parts supply section,
A component supply unit is provided with a large number of feeders arranged so that various components can be supplied. For example, a component supply unit having a predetermined number of tape feeders arranged in parallel is provided. For example, when the head unit includes a plurality of heads, these heads simultaneously or continuously adsorb components from a plurality of feeders of the component supply unit, and then the head unit is placed on the printed circuit board of the component mounting unit. It moves, and components are sequentially mounted on the printed circuit board from each head.

[0003]

By the way, in this type of mounting machine, the layout of the mounted components on the printed circuit board is determined for each type of board according to its use, function, and the like. It is required to set the feeder arrangement on the component supply side so as to be advantageous. Especially when the head unit has multiple heads, the feeder is mounted so that the tact time can be shortened if the feeder is arranged so that the components close to the mounting position on the printed circuit board can be picked up by the multiple heads at the same time. It greatly affects efficiency. For this reason, an optimization method has been conceived in which, based on the printed circuit board to be mounted, an optimal feeder arrangement is set by computer analysis or the like to enhance mounting efficiency.

However, when various boards are mounted on the same mounting machine, if the layout of the feeders is individually set for each of the various boards, the layout of the feeders is greatly changed each time the type of the board to be mounted is changed. Need to be performed, and time is spent for the work. Therefore, there is room for improvement in terms of overall efficiency including feeder replacement work.

In view of the above circumstances, the present invention makes it possible to use the same mounting machine for a plurality of types of printed circuit boards and to improve the working efficiency of the mounting machine including a feeder replacement operation. It is an object of the present invention to provide a component supply method.

[0006]

The invention according to claim 1 is
A component supply unit, a component mounting unit on which a printed circuit board is installed, and a head for sucking a component from the component supply unit and mounting the component mounting unit on the printed circuit board; In a mounting machine in which a component supply unit provided with a feeder for component supply is mounted, a target board selected from a plurality of types of printed boards is set in the component mounting section, When setting the position of the feeder in the component supply unit, first, the position of the feeder to supply the components mounted in common on each printed circuit board should be set to the optimum position to optimize the mounting efficiency. The feeder that determines a component other than the common component among the components mounted on the first type printed circuit board, As placing the remaining space except the arrangement portion of the feeder for supplying the common component in the goods supply section unit, it determines the arrangement of the feeder in the residual space by a predetermined optimization processing,
Sequentially, among the components mounted on each of the remaining types of printed circuit boards, the arrangement of the feeders that supply components other than the above-mentioned common components is changed with respect to the remaining space excluding the arrangement portion of the feeder that supplies the above-mentioned common components. The feeder arrangement in the component supply unit is determined by the optimization operation.

According to this method, of the many feeders required to supply components to a plurality of types of printed circuit boards, a feeder for supplying components commonly mounted on each printed circuit board is a component supply unit. Since there is no need to change the layout of the feeders that supply the common components, even if the type of board to be mounted changes among the multiple types of printed boards, All you need to do is replace the feeder that supplies parts other than the parts. Therefore, the feeder replacement operation is simplified. Moreover, the layout of the feeders that supply the common components is determined by the optimization calculation process, and the layout of the feeders that supply components other than the common components of various printed circuit boards is determined by the optimization calculation process. A feeder arrangement can be obtained in which the mounting efficiency can be increased as much as possible for each printed circuit board.

In particular, if the processing for deciding the feeder arrangement by the optimization calculation processing is performed in order from the feeder of the component with the highest mounting frequency, it is possible to obtain a feeder arrangement capable of effectively increasing the mounting efficiency. .

In the above method, a plurality of component supply units corresponding to a plurality of printed circuit board groups each including a plurality of different types of printed circuit boards are prepared, and each component supply unit is provided with one printed circuit board. Among the components mounted on a plurality of types of printed circuit boards of the group, at least a feeder for supplying a component mounted commonly to each printed circuit board of the group is provided, and a component supply unit unit is provided to the mounting machine body. If it is made replaceable and one of the component supply units is selectively attached to the mounting machine body according to the printed circuit board group to which the printed circuit board to be processed belongs,
Only when the printed circuit board to be mounted is changed to that of a different printed circuit board group, the feeders are replaced collectively, and processing of a large number of types of printed circuit boards can be performed while minimizing the work of replacing the feeder.

In this case, apart from each component supply unit corresponding to each printed circuit board group, a component supply unit fixedly provided to the mounting machine main body is provided. While a feeder that supplies components that are commonly mounted on the printed circuit boards of the printed circuit board group is provided, the components that are commonly mounted on each printed circuit board of the group are installed in each of the component supply units corresponding to the printed circuit board groups. It is preferable to provide a feeder that supplies components other than the components mounted in common on all printed circuit boards. In this way, the feeder replacement work is not required for a feeder to supply components commonly mounted on each printed circuit board of each printed circuit board group even when the target board is changed. Labor is further reduced.

[0011]

Embodiments of the present invention will be described with reference to the drawings.

FIGS. 1 and 2 schematically show an example of a mounting machine to which the method of the present invention is applied. In these figures, a conveyor 2 for transporting a printed board is arranged on a base 1 of a mounting machine main body, and a printed board P is transported on the conveyor 2 and stopped at a predetermined mounting work position. It has become.

On the front and rear sides of the conveyor 2, component supply units equipped with component supply unit units 3A and 3B are provided. Each of the above component supply unit units 3A and 3B
Has a plurality of rows of tape feeders 4, each of which accommodates a small piece of a component such as an IC, a transistor, or a capacitor at predetermined intervals so that the held tape is led out from a reel. With
A ratchet type feeding mechanism is provided at the tape feeding end, and the tape is fed intermittently as components are picked up by the head 16 described later.

Above the base 1, a head unit 5 for mounting components is mounted.
Can move in the X-axis direction (the direction of the conveyor 2) and the Y-axis direction (the direction orthogonal to the X-axis on a horizontal plane).

That is, a pair of fixed rails 7 extending in the Y-axis direction and a ball screw shaft 8 driven to rotate by a Y-axis servomotor 9 are disposed on the base 1. A head unit supporting member 11 is disposed on the supporting member 11, and a nut portion (not shown) provided on the supporting member 11 is screwed to the ball screw shaft 8. The support member 11 has a guide member 13 extending in the X-axis direction.
And a ball screw shaft 14 driven by an X-axis servomotor 15, the head unit 5 is movably held by the guide member 13, and a nut portion (not shown) provided on the head unit 5 is provided. ) Is screwed onto the ball screw shaft 14. The ball screw shaft 8 is rotated by the operation of the Y-axis servo motor 9 to move the support member 11 in the Y-axis direction, and the ball screw shaft 14 is rotated by the operation of the X-axis servo motor 15, thereby causing the head unit to rotate. 5 moves in the X-axis direction with respect to the support member 11.

The head unit 5 is provided with a plurality of heads. In the illustrated example, eight heads 16 are arranged in a state of being arranged in the X-axis direction. Each of the heads 16 can be moved up and down and rotated, and is driven by a lifting drive unit and a rotation drive unit (not shown). A suction nozzle 17 is provided at the lower end of each of the heads 16, and a negative pressure is supplied to the suction nozzle 17 from a negative pressure supply means (not shown) at the time of component suction, and the component is suctioned by the suction force due to the negative pressure. It has become so. In addition, the head unit 5 is also provided with a camera 18 and the like for imaging a fiducial mark or the like attached to the printed circuit board.

FIGS. 3 and 4 show the structure of the component supply section on the front side (lower side in FIG. 1) of the mounting machine. In these figures, the component supply unit 3B has a feeder holding plate 21 extending in the feeder arrangement direction, and the feeder holding plate 21 holds a large number of rows of tape feeders 4, and both ends of the feeder holding plate 21 Is the X of the mounting machine body
The component supply unit 3B is mounted on the mounting machine body by being supported by mounting portions 23 provided on the frames 22 on both axial sides and clamped by the clamping means 24. By releasing the clamp of the clamp means 24, the component supply unit 3B can be detached from the mounting machine body, and the entire component supply unit 3B including the multiple rows of tape feeders 4 can be replaced collectively. Therefore, it is possible to prepare a plurality of component supply unit units 3B and selectively install any one of the component supply unit units 3B in the front component supply unit. In addition,
Although not shown, the component supply unit 3A of the component supply unit on the rear side of the mounting machine is similarly configured to be collectively exchangeable.

Also, each of the tape feeders 4 in the component supply unit units 3A and 3B can be individually attached and detached.
The arrangement of the tape feeder 4 can be freely set. The feeders provided in the component supply units 3A and 3B are not limited to the tape feeders, and may be configured to partially incorporate a stick feeder or the like instead of the tape feeder.

FIG. 5 shows a collective exchange cart 26 used when the component supply unit 3B is exchanged with the mounting machine body. The batch exchange cart 26 has, at its upper end, the feeder holding plate 21 of the component supply unit 3B.
And a support portion 27 for supporting the tape feeder 4 and a caster 28 at the lower end so that the component feeder unit 3B can be freely moved while being supported. The component supply unit 3B can be transferred between the collective exchange cart 26 and the mounting machine main body.

Although each of the component supply unit units 3A and 3B may be collectively exchangeable, in this embodiment, the component supply unit unit 3B of the component supply unit on the front side of the mounting machine (hereinafter, the component supply unit on the front side). Only the unit 3B) is subject to batch replacement, and the component supply unit 3A of the component supply unit on the rear side of the mounting machine (hereinafter, abbreviated as the rear component supply unit 3A) is fixed to the mounting machine body. It is arranged in a way.

A target printed board selected from the various printed boards P is fed into the mounting machine, and a predetermined number of kinds and a predetermined number of components corresponding to the target printed board are supplied from a component supply unit to the printed board P. Of the components mounted on the plurality of types of printed circuit boards P in advance, a feeder for these components is provided in each of the component supply units 3A in order to be able to supply components mounted in common on each printed circuit board P. , 3B.

More specifically, various types of printed circuit boards P to be mounted are divided into a plurality of groups each having a predetermined number of types, and the front-side component supply unit 3B and the collective replacement are performed so as to correspond to the groups. A plurality of carts 26 are provided.

A feeder capable of supplying components commonly mounted on all the printed circuit boards P among the components mounted on the plurality of types of printed circuit boards P is provided in the component supply unit 3A on the rear side. On the other hand, among the components commonly mounted on the printed circuit board P in each of the above groups,
Feeders for supplying components other than the components supplied by the feeders provided in the rear component supply unit 3A are mounted on the front component supply unit 3B.

That is, in order to facilitate understanding, a simple specific example will be described. There are four types of printed circuit boards P, and two of them are the first group (the printed circuit board PA in FIG. 6). , PB are divided into two groups by another two types of printed circuit boards P.
In the case of forming a group (a board group β including the printed boards PC and PD in FIG. 6), a feeder for components mounted in common on all four types of printed boards P includes a rear component supply unit unit 3A. Has been deployed. Then, the first component supply section unit 3B ₁ and the second component supply section unit 3B ₂ is prepared as a plurality of component supply section unit 3B installed on the front side of the component supply section, each of the first group among the components mounted in common on the printed board P, 4 kinds all parts feeder other than components mounted in common on the printed board P is deployed in the first component supply section unit 3B _1, second among the components mounted in common in the printed circuit board P of the group, all four components of the feeder other than components mounted in common on the printed board P is deployed in the second component supply section unit 3B ₂ ing. If the number of the printed circuit boards P is larger than this, the printed circuit boards P may be divided into three or more groups, and the third, fourth,... Component supply unit units 3B may be prepared.

During the actual mounting process, the front component supply unit 3B corresponding to the board to be mounted is mounted.
Is set in the component supply unit, and the display means 3
According to the contents of the board-specific data file displayed in 8,
A feeder that supplies a unique component mounted on the target board is mounted on the component supply unit 3B on the front side to perform a mounting process.

FIG. 6 shows a control system of the mounting machine. In this figure, the control unit 30 provided for the mounting line including the mounting machine includes the Y axis and the X axis.
By controlling the servomotors 9 and 15 of the shafts and the lifting and lowering driving means and the rotation driving means of the head 16, the mounting operation such as the adsorption of the component from the component supply unit and the mounting of the component on the printed circuit board P is controlled. Control means 31 and data creation means 32 for creating data for controlling the mounting operation thereof
And

The data generating means 32 is provided with a signal from an input operation unit 33 on which an input operation is performed by an operator,
Receiving information from the database 35 indicating basic data on the printed circuit board P and components, and cooperating with the external calculation means 35 attached to the control unit 30 to mount components on each printed circuit board P in accordance with a flowchart described later. Create data for .. And the common component information file 37 are recorded with necessary data. The data on the printed circuit board P is as follows.
Instead of being provided from the database 35 as described above, it may be provided by an input operation by an operator.

The above-mentioned board-specific data files 36A, 36B
Are provided for the various printed circuit boards PA, PB, respectively, and include a board information file, a mounting information file, a component information file, and the like. In the board information file, the outer size of the printed board, production conditions, and the like are recorded. Also, the mounting information file contains
As shown in FIG. 7, a mounting order number indicating the mounting order of each component mounted on the corresponding printed circuit board, and X and Y of each mounting position.
Data in which the coordinates, the part number to be used, and the head number are associated is recorded. FIG. 8 shows the part information file.
As shown in (1), data in which a used part number is associated with a part size, a shape, a feeder position, a feeder type, and the like are recorded.

The common component information file 37 is shared by the various printed circuit boards PA, PB, PC,... And is used in common by all of the plural types of printed circuit boards PA, PB, PC,. Data (FIG. 9) in which the part number (identification code) is associated with the part size, shape, feeder position, feeder type, and the like are recorded. Also, in addition to the data relating to the components mounted in common on all the printed boards PA, PB, PC,... As described above, they are commonly used only for the printed boards constituting the board groups α, β,. In other words, the number of parts other than the parts commonly used for the printed circuit boards constituting each board group and the parts commonly used for all the printed circuit boards, the part size, etc. Associated data (not shown) is recorded.

Then, the board-specific data file 36
And the contents of the common parts information file 37 are created by the data creation means 32 and the external calculation means 35, and the contents of these files are displayed by the display means 38 when necessary. Assembling of the feeders in the units 3A and 3B, assembling of the head 16 in the head unit 5, and the like are performed.
Further, at the time of mounting, the contents of the file are read out by the mounting control means 31, and the mounting operation is sequentially performed in accordance therewith.

Here, a method of creating substrate data performed by the data creating means 32 will be described with reference to FIGS. In the following description, the boards to be mounted are four types of printed boards PA, PB, PB, and PC.

FIG. 10 shows a main routine for creating board data. In the process of creating the board data, first, a corresponding model of the mounting machine is selected by the data creating means 32, and a list of the components is registered based on the data of the components to be mounted on the target board registered in the model. Is created (steps S1 and S2). For example, printed circuit board P
A, PB, PC, PD total 12 types of parts (a
1 to a12), a list as shown in FIG. 12 is created. In this example, “1” is the component to be mounted,
“0” indicates a component not mounted. The following description is based on this example.

Next, the data of this parts list is read by the external calculation means 35 (step S3), and the printed circuit board P
Grouping of A, PB, PC, and PD, grouping of common components, and setting of component priorities are performed (step S4).

That is, the printed circuit boards PA, PB, P
With respect to C and PD, the printed circuit boards P are so arranged that boards having many types of components mounted in common belong to the same group.
Grouping of A, PB, PC, and PD is performed. In the example of the above component list, the printed circuit boards PA and PB are included in one group (referred to as a substrate group α), and the printed circuit boards PC and PD are included in another group (referred to as a substrate group β). By doing so, the printed circuit board P can be assigned to a group that is considered to be preferable to dispose the component feeders in the common component supply unit from the viewpoint of mounting efficiency.
A, PB, PC, and PD are divided.

Next, all the printed circuit boards PA, PB, P
Parts commonly mounted on C and PD and board group α
And the components mounted only on the printed circuit boards PC and PD corresponding to the board group β are examined and grouped. . The “components that are mounted only in common” are the components that are mounted in common on each printed circuit board belonging to the group, and all the printed circuit boards P
A means a component excluding components commonly mounted on A, PB, PC, and PD. For the parts listed above, see FIG.
As shown in the figure, all the printed circuit boards PA, PB, PC,
Components a1 to a4 commonly mounted on the PD are grouped into one group (component group A), and each printed circuit board PA,
Components a5 and a6 that are mounted only on the PB are grouped into one group (component group B), and components a9 and a that are mounted only on each of the printed circuit boards PC and PD.
10 is one group (part group C).

Next, a priority is set for each component belonging to the component groups A to C. In this embodiment, the priority is set such that the number of components to be mounted is large. However, for example, the priority may be designated by the user regardless of the number of components. Note that the example shown in FIG. 13 indicates that the larger the number, the higher the priority.

Thus, the printed circuit boards PA, PB, PC,
When the grouping of the PDs, the grouping of the common parts, and the setting of the parts priority are performed, the data is converted into dedicated data and read into the data creating means 32 (step S5), and the data is converted into the dedicated parts. The assignment of the component groups A to C, that is, which component supply unit 3A or 3B is to be provided with a feeder for the component belonging to each of the component groups A to C is determined (step S6).

More specifically, the rear part supply unit 3
A component group A is assigned to A, and component groups B and C are assigned to the front component supply unit 3B. In particular, component group B, C is part group B is allocated for the first component supply section unit 3B _1, component group C are allocated to the second component supply section unit 3B _2. That is, the feeders of the components corresponding to the component group A are fixedly provided in the mounting machine main body, and the feeders of the components corresponding to the component groups B and C are different from each other.
₁ , 3B ₂ , and these component supply unit units 3B ₁ ,
The allocation is carried out to selectively deploy the feeder mounting machine body in accordance with the exchange of 3B _2.

Then, information such as the position of the head 16 is read from the database 34 into the data creating means 32 (step S7), and a specific feeder position is determined based on an optimization calculation process for improving mounting efficiency. (Steps S8 and S9).

That is, when components are mounted by the head unit 5 having the plurality of suction heads 16, a plurality of components are simultaneously or continuously sucked from the component supply unit by each suction head, and then the head unit 5 is placed on the printed circuit board. The process of moving and mounting components sequentially is repeated until all mounted components are mounted on the printed circuit board,
The mounting efficiency on the target printed circuit board varies depending on the arrangement of the feeder of the component supply unit, the arrangement of the various heads 16 in the head unit 5, and the order of mounting the components with respect to the arrangement of the mounted components. Then, a feeder arrangement or the like that is advantageous for increasing the mounting efficiency on the target printed circuit board can be obtained by computer analysis using an appropriate method. Therefore, the feeder position, the mounting order, and the like are determined by the mount data optimization arithmetic processing (processing by computer analysis for improving the mounting efficiency).

In step S8, the feeder positions of the common components, that is, the components belonging to the component groups A to C are determined. In determining the feeder position, for example, priorities are assigned in advance to the feeder mounting spaces of the component supply unit units 3A and 3B, and the components are placed in the positions of higher priority in order from the component with the highest priority for each of the component groups A to C. Feeder positions are assigned.

For example, when the priority positions of the component group A in the component supply unit 3A are determined in order from the uppermost position as numbers 20, 21, 22, 23,..., The component a1 belonging to the component group A As the feeder positions of .about.a4, the positions with the higher priority are assigned in order from the component with the higher priority (FIG. 1).
4). Similarly, the first and second component supply unit units 3
The priority positions in B ₁ and 3B ₂ are numbers 20, 21, 22,
If the order is determined in the order of 23...
The feeder positions of the components a5 and a6 belonging to the component group A and the components a9 and a10 corresponding to the component group C are set as shown in FIGS. In addition,
In the tables of FIGS. 14 to 16, “rear” means the rear component supply unit 3A, and “front” means the front component supply unit 3B (the same applies to FIG. 17 hereinafter).

Then, data relating to the feeder positions and the like of the components corresponding to the respective component groups A to C set in this manner are recorded in the common component information file 37 for each group.

In step S9, the feeder position of each component mounted on the printed board is determined for each printed board according to a subroutine shown in FIG.

In this feeder position determination routine,
First, a target board, a number of a component supply unit (batch exchange cart), and the like are selected as creation conditions (step S1).
1). Next, feeder moving conditions such as whether the feeder arrangement in the component supply unit is fixed (determined by the user) or movable (determined by the data creating means 32) are determined (step S12).

Next, the target substrate is read (step S1).
3) In addition, in order to use only the area corresponding to the target component supply unit in the common component information file 37, a process of masking information of other areas is performed as necessary (step S14). Specifically, when the target board belongs to the board group α, the information of the area corresponding to the common component of only the board group β is masked, and when the target board belongs to the board group β, the information of the area common to only the board group α is masked. A process of masking information of an area corresponding to the component is performed.

Next, it is determined whether or not common component information, that is, information relating to each component of the component groups A to C is recorded in the common component information file 37 (step S15). , A group having common part information is read out of the part groups A to C except for the masked one (step S1).
6). If there is no common part information, step S2
3 is transferred.

When the component group is read, information on any component among the components belonging to the component group is read (step S17), and information on any component mounted on the target board is read. (Step S1
8). Then, matching is performed between the common component and the component mounted on the target board (step S19). If these components do not match, the process proceeds to step S18 to obtain information on another component mounted on the target board. Is read, and this process is repeated until the components match. If these components match, the feeder position of the common component is assigned as the feeder position of the component on the target board (step S20).

Then, it is determined whether or not the above-described collation has been performed for all the parts corresponding to the part group (step S21). Information on other components corresponding to the component group is read. On the other hand, if all parts have been collated in the part group, it is determined whether there is an uncollated group (step S22). If there is an uncollated parts group, the process proceeds to step S16, where another part is determined. Is read.

In other words, since the feeder position of the common component has already been determined in step S8, in steps S16 to S22, the components belonging to the component groups A to C among the components mounted on the target board are determined. The same part is checked, and the feeder position of the common part is assigned as the feeder position of this part. For example, when the target board is the printed board PA, components a1 to a7 are mounted on the board as shown in FIG.
Among the components a1 to a7, the components a1 to a4 correspond to the component group A, and the components a5 and a6 correspond to the component group B.
Therefore, the feeder positions of these common parts a1 to a6 are determined in the processing of steps S16 to S22 (FIG. 17).
reference).

In step S23, a feeder position of a fixed component such as a teaching component is determined. For example, when a component to be mounted on the target substrate includes a component in which the feeder structure of the component is different from other feeders and the arrangement of the feeder is fixedly determined in advance, the feeder position of the component is set. Is assigned in advance.

In step S24, the remaining components in the empty space in the _first component supply unit 3B1, that is, the components belonging to the component groups A to C and the teaching components among the components mounted on the target board, etc. The feeder position of the unique component that does not correspond to the fixed component is assigned.

[0053] For example, if the substrate PA is the target substrate, the feeder component (component a5, a6) which corresponds already to the component group B with respect to the first component supply section unit 3B ₁ is assigned, With respect to the remaining components, that is, the component a7, the space excluding this portion is an empty space, and the feeder arrangement with respect to the substrate PA is determined within that space. In this case, the first component supply section unit 3B ₁ in advance numbers as described above 20,21,22,2
Since the priority positions are determined in the order of 3..., And the feeder positions of the parts a5 and a6 have already been assigned to the positions of the numbers 20 and 21, the part a7 is located at the next higher priority position (the position of the number 22). Feeder positions are assigned.

Thus, if the printed circuit board PA,
As shown in FIG. 17, the feeder positions of all the mounted components are determined.

When all the feeder positions of the components mounted on the target board are determined in this way, it is next determined whether there is a target board, that is, whether there is a target board for which the feeder position of the mounted component has not been determined. (Step S2
5) In some cases, the process proceeds to step S13, and data of another target substrate is read.

When the feeder positions of the mounted components have been determined for all the target substrates, the process proceeds to step S10 in FIG.
In the above, the order of mounting components and the like for each printed circuit board is determined by optimization calculation processing.

Then, for each printed circuit board, information on the feeder position of the component is recorded in the data file for each substrate together with other information (component size, shape, feeder type, etc.) on the component.

FIGS. 18 and 19 schematically show a method of arranging the feeder positions in the creation of the board data.
become that way.

First, the printed circuit boards PA, PB, PC, P
The layout of the feeders that supply the components (components corresponding to the component group A) mounted in common to D is determined by the above-described optimization calculation processing in the first component supply unit 3A (see FIG. 18A). Range F with hatching
A).

Next, components mounted in common only on the printed circuit boards PA and PB (components corresponding to the component group B)
The arrangement of the feeder for supplying, determined by the optimization processing in the first component supply section unit 3B ₁ (range shown by hatching in FIG. 18 (b) FB).

[0061] Then, group A of the components mounted on the printed circuit board PA, the arrangement of specific components of the feeder that does not correspond to B is defined in a space other than the above-mentioned range FB in the first component supply section unit 3B ₁ ( FIG. 18 (c)
A range FC indicated by oblique lines in the drawing) determines the feeder positions of all components mounted on the printed circuit board PA. Similarly, among the components mounted on the printed circuit board PB, the arrangement of the feeders of the unique components that do not correspond to the groups A and B is determined by the first component supply unit 3B _1.
(The range FD indicated by oblique lines in FIG. 19A), the feeder positions of all components mounted on the printed circuit board PB are determined.

Although not shown, the printed circuit board P
Similarly, the feeder position of the components mounted on C and PD is determined in the _second component supply unit 3B2.

When the feeder position of a component is determined by the method of the present embodiment as described above, for example, if the printed circuit board to be mounted is any one of the printed circuit boards belonging to the same board group, it is extremely necessary if necessary. It is possible to cope with a change in the type of printed circuit board simply by replacing the feeder of the section.

That is, when the board to be mounted is the printed board PA, a feeder is provided as shown in FIG. 18C, and when this is changed to the printed board PB, FIG. It is necessary to deploy a feeder as shown in (1). At this time, at the feeder position of the component targeted for each printed circuit board PA, PB, the feeder position of the unique component mounted on the printed circuit board PA (FIG. 18)
(C), the range FC indicated by hatching, and the position of the feeder of the unique component mounted on the printed circuit board PB (FIG. 19).
Since there is a portion (a range FE shown by hatching in FIG. 19B) that overlaps with a range FD shown by hatching in (a), the feeder is replaced only for this portion, and Can be used for mounting the printed circuit board PB by using the feeder as it is.

For this reason, for example, the position of the feeder is set for each printed circuit board by the above-described optimization calculation processing, and the feeder is attached to the component supply unit each time the board to be mounted is changed, or Compared to the case where the component supply unit that sets the position of the feeder by the above optimization calculation process is prepared for each printed circuit board and the component supply unit is replaced every time the board to be mounted is changed In addition, the labor required for switching the mounting board is reduced.

That is, in the case where the feeder is changed with respect to the component supply unit every time the board to be mounted is changed, it is often troublesome to change almost all of the feeders. When replacing the component supply unit every time the substrate to be changed is changed, a large amount of work is required every time the substrate is changed, which is difficult, but according to the feeder arrangement according to the method of the above embodiment, Even if there is a change, there is no need to replace all the feeders, and depending on the type of board, there is no need to replace the component supply unit. Therefore, the labor required for switching the mounting board is reduced.

In addition, the layout of the feeders for supplying the common components is determined by the optimization calculation process, and the layout of the feeders for supplying components other than the common components of the various printed circuit boards is also determined by the optimization calculation process. Therefore, a feeder arrangement can be obtained in which the mounting efficiency can be increased as much as possible for each of the printed circuit boards.

Further, the feeder of the common component is shared by a plurality of substrates. In particular, for the component commonly mounted on the printed circuit boards PA, PB, PC and PD, the feeder is used. By being fixedly provided in the component supply unit 3A on the rear side and shared by all the substrates, the number of feeders can be reduced as compared with the case where the components are not shared, and the component supply unit 3 There is also a feature that feeders are rationally arranged in a limited space.

[0069]

As described above, according to the present invention, a feeder is provided in a component supply unit installed in a component supply unit.
The required number of feeders are arranged so that the component supply unit can be replaced collectively and the component supply unit can supply a common component among components mounted on multiple types of printed circuit boards. Therefore, the trouble of the feeder replacement work can be reduced. Moreover, when setting the arrangement of the feeders in the component supply unit, first, the arrangement of the feeders to supply the components to be mounted in common on each printed circuit board is set to the optimal arrangement for increasing the mounting efficiency. Determined by a predetermined optimization calculation process, and then, for a feeder that supplies a component other than the common component among the components mounted on the first type printed circuit board, the common component in the component supply unit unit Is arranged in the remaining space excluding the arrangement portion of the feeder that supplies the feeder, the arrangement of the feeder in the remaining space is determined by a predetermined optimization calculation process, and the feeder is sequentially mounted on each of the remaining types of printed circuit boards The arrangement of feeders that supply parts other than the common parts among the parts, and the arrangement part of the feeders that supply the common parts In addition, because the feeder arrangement in the component supply unit is set by optimizing the remaining space by optimizing calculation processing, mounting efficiency should be increased as much as possible for multiple types of printed circuit boards. Feeders can be arranged.

A plurality of component supply unit units corresponding to a plurality of printed circuit board groups each including a plurality of different types of printed circuit boards are prepared, and each component supply unit unit is provided with a plurality of types of one printed circuit board group. Among the components mounted on the printed circuit boards, a feeder that supplies at least the components mounted in common on each printed circuit board of the group is provided, and the component supply unit can be replaced with respect to the mounting machine main body, and the processing is performed. If one of the component supply units is selectively attached to the mounting machine body according to the printed circuit board group to which the target printed circuit board belongs, the printed circuit board to be mounted is changed to a different printed circuit board group. Only when the feeder is replaced, the feeder replacement work is minimized. While being eliminated, it is possible to perform processing of multiple types of printed circuit board.

In this case, apart from each component supply unit corresponding to each printed circuit board group, a component supply unit fixedly provided to the mounting machine body is provided, and all the printed circuit boards are provided in the component supply unit. While a feeder that supplies components commonly mounted on the printed circuit board of the group is provided, each component supply unit corresponding to the printed circuit board group has If a feeder that supplies components other than the above components that are commonly mounted on all printed circuit boards is provided, a feeder that should supply components that are commonly mounted on each printed circuit board of each printed circuit board group is provided. Since the replacement work is not required for, the trouble of the feeder replacement work is further reduced.

[Brief description of the drawings]

FIG. 1 is a plan view showing an example of a mounting machine to which a method of the present invention is applied.

FIG. 2 is a front view of a portion where the head unit of the mounting machine is supported.

FIG. 3 is a plan view of a component supply unit.

FIG. 4 is a front view of a component supply unit.

FIG. 5 is a front view of the collective exchange cart.

FIG. 6 is a block diagram illustrating an arithmetic control system that performs processing such as determination of a feeder arrangement, creation of a data file, and mounting control.

FIG. 7 is a diagram showing the contents of a mounting information file of a board-specific data file.

FIG. 8 is a diagram showing contents of a component information file of a board-specific data file.

FIG. 9 is a diagram showing the contents of a common component information file.

FIG. 10 is a flowchart showing a procedure for creating substrate data.

FIG. 11 is a flowchart illustrating a procedure for determining a feeder position for each substrate.

FIG. 12 is a diagram showing a list of components mounted on a printed circuit board.

FIG. 13 is a diagram showing a list of components mounted on a printed circuit board (a diagram in which common components are grouped and priorities for the common components are set).

FIG. 14 is a diagram showing components corresponding to a component group A and their feeder positions.

FIG. 15 is a diagram showing components corresponding to a component group B and their feeder positions.

FIG. 16 is a diagram showing components corresponding to a component group C and their feeder positions.

FIG. 17 is a diagram showing components mounted on a printed circuit board PA and their feeder positions.

FIGS. 18A to 18C are explanatory diagrams schematically showing a method of determining a feeder position.

FIGS. 19A and 19B are explanatory diagrams schematically showing a method of determining a feeder position.

[Explanation of symbols]

 P, PA to PD Printed circuit board 3A, 3B Component supply unit 4 Tape feeder 5 Head unit 16 Head 30 Control unit 31 Mounting control means 32 Data creation means 33 Input operation part 34 Database 35 External calculation means 36A to 36D Data file for each board 37 Common parts information file 38 Display means

Claims (4)

[Claims] 1. A component supply unit comprising: a component supply unit; a component mounting unit on which a printed circuit board is installed; and a head for sucking a component from the component supply unit and mounting the component on the printed circuit board of the component mounting unit. In the part, while a part supply unit unit equipped with feeders for supplying parts in multiple rows is attached,
In a mounting machine in which a target board selected from a plurality of types of printed boards is set in the component mounting section, when setting the arrangement of the feeder in the component supply section unit, first, each print The layout of the feeders to be supplied with the components commonly mounted on the board is determined by a predetermined optimization arithmetic processing that makes the layout optimal for increasing the mounting efficiency, and then mounted on the first type printed board. The feeder that supplies parts other than the common parts among the parts to be supplied is arranged in the remaining space excluding the arrangement part of the feeder that supplies the common parts in the part supply unit. The layout of the feeder is determined by a predetermined optimization calculation process. The feeder arrangement in the component supply unit is determined by optimizing the processing of the feeder that supplies components other than the common component with respect to the remaining space excluding the arrangement portion of the feeder that supplies the common component. A component supply method for a mounting machine, wherein 2. The component supply method for a mounting machine according to claim 1, wherein the process of deciding the feeder arrangement by the optimization operation process is performed in order from the feeder of the component having a high mounting frequency. 3. A plurality of component supply unit units corresponding to a plurality of printed circuit board groups each including a plurality of different types of printed circuit boards, and each component supply unit unit is provided with a plurality of types of one printed circuit board group. Among the components mounted on the printed circuit boards, a feeder that supplies at least the components mounted in common on each printed circuit board of the group is provided, and the component supply unit can be replaced with respect to the mounting machine main body, and the processing is performed. 3. The component supplying method for a mounting machine according to claim 1, wherein one of the component supplying unit units is selectively attached to the mounting machine main body according to a printed circuit board group to which the target printed circuit board belongs. 4. A component supply unit fixedly provided to a mounting machine body separately from each component supply unit corresponding to each printed circuit board group, wherein all the printed circuit board groups are provided in the component supply unit. While a feeder that supplies components that are commonly mounted on a printed circuit board is provided, each of the component supply units corresponding to the printed circuit board group has all of the components that are commonly mounted on each printed circuit board of the group. 5. The component supply method for a mounting machine according to claim 4, further comprising a feeder for supplying components other than the components commonly mounted on the printed circuit board.