JPH09312494A - Supply of component to mounting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to use one and the same mounting machine for a plurality of types of printed boards and increase the efficiency of the mounting machine including a replacement of a feeder by conducting a feeder position determining process by an optimized computation process for one printed board after another. SOLUTION: When determining the position of a feeder 4 in a component supplying unit 3, the positions of a plurality of the feeders 4 which should supply components on a printed board P of a first type are determined by an optimized computation process for increasing the efficiency. Nextly, feeders 4 which supply such components that may be mounted on a printed board P of a second type but may not be common to the printed board P of a first type would be located in a remaining space except for a space which is already set for a place for other printed boards. At that time, the positions are determined by an optimized computation process, too. The positions of the feeders for a plurality of types of printed boards P are determined by conducting a position determining process for one feeder after another.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is equipped with a component supply unit having a large number of feeders in the component supply unit, and a printed circuit board to be processed is loaded and installed in the component mounting unit. The present invention relates to a component supply method in a mounter in which an electronic component such as an IC is sucked from the component supply unit and mounted at a predetermined position on a printed circuit board by a head having a.

[0002]

2. Description of the Related Art Conventionally, a head having a suction nozzle sucks an electronic component such as an IC from a component supply section and transfers it onto a printed circuit board installed in a component mounting section to place it at a predetermined position on the printed circuit board. A mounting machine adapted to be mounted is generally known. In this mounting machine, a head unit including one or more heads is usually movable in the X-axis direction and the Y-axis direction. In addition, the parts supply section
A component supply unit unit in which a large number of feeders are arranged so as to be able to supply various components is provided, and for example, a component supply unit unit in which a predetermined number of tape feeders are arranged in parallel is provided. Then, for example, when the above head unit is provided with a plurality of heads, these heads simultaneously or continuously suck 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. The heads are moved and the 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 board according to its application, function, etc. It is required to set the feeder arrangement on the component supply side so as to be advantageous to the above. Especially when the head unit is equipped with multiple heads, for example, the tact time can be shortened by arranging the feeders so that multiple heads can pick up components that are close to the mounting position at the same time. It greatly affects efficiency. Therefore, an optimizing method of setting an optimum feeder arrangement for increasing the mounting efficiency by computer analysis or the like according to the printed circuit board to be mounted has been considered.

However, when various boards are mounted by the same mounter, if the layout of the feeders is set individually for each board, the layout of the feeders is changed each time the type of board to be mounted is changed. Need to be done, and time is spent for the work. Therefore, there is still 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 the feeder replacement work. It is an object of the present invention to provide a method of supplying parts of the above.

[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 that sucks a component from the component supply unit and mounts the component on the printed circuit board of the component mounting unit. In the mounter in which the component supply unit having the component supply feeder is mounted, and the target substrate selected from a plurality of types of printed circuit boards is installed in the component mounting unit. When setting the placement of the feeders in the component supply unit, first, the placement of the plurality of feeders to which the components to be mounted on the first-type printed circuit board are to be fed is determined to be the optimal placement for increasing the mounting efficiency. Of the components mounted on the second type printed circuit board and then shared by at least the first type printed circuit board. For a feeder that supplies a large number of parts, place it in the remaining space excluding the part where the feeder layout has already been set in the component supply unit. And the feeder arrangement in the component supply unit is set so that the components mounted on each of a plurality of types of printed circuit boards can be supplied by sequentially performing such feeder arrangement determination processing. It is the one.

According to this method, a large number of feeders required to supply components to a plurality of types of printed circuit boards are incorporated in the component supply unit and are set in the component supply unit, so If the type of printed circuit board is changed, it is not necessary to change the layout of the feeders and the feeder replacement work can be omitted. Moreover, it is possible to obtain a feeder arrangement that supercharges the mounting efficiency of each printed circuit board.

In particular, if the processing for determining the feeder placement by the optimization calculation process for each of a plurality of types of printed circuit boards is performed in order from the printed circuit board with the highest frequency of mounting processing, the total number of printed circuit boards for a plurality of types of printed circuit boards will be increased. The efficiency of specific work is improved.

Further, in the above method, the common component feeder for supplying components commonly mounted on a plurality of types of substrates is shared by a plurality of types of substrates, and a unique component is supplied for each type of substrate. Parts feeders are provided for each type of board, and multiple types of feeders can be provided by setting the feeders for these common parts and the feeders for unique parts for each type of board in the component supply unit at once. The feeders necessary to supply components to the board are reasonably arranged in a limited space.

In this case, board-specific data including information on the parts to be mounted, the parts mounting position, and the position of the feeder for supplying the parts to each of the various printed boards is recorded in the board-specific data file, and the common data is stored. The fixed part data including the identification code fixedly determined for each part according to the type of the part and the position of the feeder supplying the part specified by the identification code should be recorded in the fixed part data file. Is preferred. In this way, the fixed component data recorded in the fixed component data file can be used for any of the boards, so that the common component feeder can be effectively used.

In the above method, 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 one printed circuit board is provided for each component supply unit unit. A printed circuit board to which the printed circuit board to be processed belongs, which is equipped with a feeder so that the components mounted on multiple types of printed circuit boards in the group can be supplied and the component supply unit can be replaced with respect to the mounting machine body. It is preferable that any one of the component supply unit units is selectively attached to the mounter body according to the group. By doing this, the feeders can be collectively replaced only when the printed circuit boards to be mounted are changed to those of different printed circuit board groups, and it is possible to process many types of printed circuit boards while minimizing the feeder replacement work. Becomes

In this case, the fixed part data including the identification code fixedly determined for each predetermined part according to the type of the part and the position of the feeder supplying the part specified by the identification code is stored in the fixed part data file. If the fixed component data is recorded and recorded separately for each component supply unit, common component data recorded in the fixed component data file is distinguished for each printed circuit board group. The determination of the feeder layout of each component supply unit is effectively performed.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings.

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 carrying a printed circuit board is arranged on a base 1 of the mounting machine main body, and the printed circuit board P is carried on the conveyor 2 and stopped at a predetermined mounting work position. It has become.

A component supply unit equipped with a component supply unit 3 is provided on the side of the conveyor 2. The component supply unit 3 has a large number of rows of tape feeders 4, and each tape feeder 4 stores small pieces of components such as ICs, transistors, capacitors, etc. at predetermined intervals and holds the tapes from the reels. In addition, the tape feeding end is provided with a ratchet type feeding mechanism so that the tape is intermittently fed as the components are picked up by the head 16 described later.

A head unit 5 for mounting components is installed above the base 1, and the head unit 5 is mounted on the head unit 5.
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 rotatably driven by a Y-axis servomotor 9 are arranged on the base 1, and the fixed rails 7 are mounted on the fixed rail 7. A head unit support member 11 is disposed in the head unit, and a nut portion (not shown) provided on the support member 11 is screwed onto 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, and in the illustrated example, eight heads 16 are arranged in a line in the X-axis direction. Each of the heads 16 can be moved up and down and rotated, and is driven by an up-and-down drive means and a rotation drive means (not shown). A suction nozzle 17 is provided at the lower end of each of the heads 16, and a negative pressure is supplied from a negative pressure supply means (not shown) to the suction nozzle 17 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 to this, the head unit 5 is also equipped with a camera 18 for capturing an image of a fiducial mark or the like attached to a printed circuit board.

3 and 4 show the structure of the component supply unit. In these figures, the component supply unit 3 is
A feeder holding plate 21 extending in the feeder arrangement direction is provided, and a large number of rows of tape feeders 4 are held on the feeder holding plate 21, and both ends of the feeder holding plate 21 are frames 22 on both sides in the X-axis direction of the mounting machine body. The component supply unit 3 by being supported by the mounting portion 23 provided in the
Is mounted on the mounter body. The component supply unit 3 can be removed from the mounter main body by releasing the clamp of the clamp means 24, and the entire component supply unit 3 including the multiple rows of tape feeders 4 can be collectively replaced.

Further, each tape feeder 4 in the component supply unit 3 can be attached and detached individually, and the arrangement of the tape feeder 4 can be freely set. The feeder provided in the component supply unit 3 is not limited to the tape feeder, and a stick feeder or the like may be partially incorporated instead of the tape feeder.

FIG. 5 is a batch exchange trolley 2 used for collectively exchanging the component supply unit 3 with respect to the mounter body.
6 is shown. The batch exchange cart 26 has a support portion 27 for supporting the feeder holding plate 21 of the component supply unit 3 and the tape feeder 4 at the upper end thereof, and a caster 28 at the lower end thereof, so that the component supply unit 3 You can move freely while supporting. Then, the component supply unit 3 can be transferred between the batch exchange carriage 26 and the mounter main body.

A target printed circuit board selected from various printed circuit boards P is sent to the mounting machine, and a predetermined number of types and a predetermined number of components corresponding to the target printed circuit board are supplied from the component supply section to the printed circuit board P. In order to be able to supply components mounted on a plurality of types of printed circuit boards P in advance, feeders for these components are provided in the component supply unit 3. Further, when there are many types of printed circuit boards P that are selectively processed by the mounting machine, it is not possible to deploy all the components mounted on all types of printed circuit boards P in one component supply unit 3. The various types of printed circuit boards P are divided into a plurality of groups of a predetermined number of types, and a plurality of the component supply unit 3 and the batch exchange carriage 26 are prepared so as to correspond to the printed circuit board group. Then, each component supply unit 3 is provided with a feeder so that components mounted on a plurality of types of printed circuit boards P of one printed circuit board group can be supplied.

More specifically, for example, in the first component supply unit 3, components to be mounted on three specific types of printed circuit boards P (printed circuit boards PA, PB, PC of group α in FIG. 6). , And another three types of printed circuit boards P are provided in the second component supply unit 3.
(Printed circuit boards PD, PE, P of group β in FIG. 6)
A feeder for the components to be mounted in F) is provided.
Furthermore, if the type of printed circuit board P is more than this,
A fourth component supply unit 3 is prepared.

FIG. 6 shows a control system of the mounting machine. In this figure, the control unit 30 mounted on the mounting machine includes a Y-axis and X-axis servo motor and a head elevation drive means and rotation drive means. Mounting control means 31 for controlling mounting operations such as suction of components from the component supply unit and mounting of components on the printed circuit board P by controlling the above, and data creation for creating data for controlling the mounting operation. And means 32.

The data creating means 32 is provided with a signal from the input operation section 33 for input operation by an operator,
To receive information from the CAD 34 indicating the component mounting position of each printed circuit board and information from the database 35 indicating basic data about the printed circuit board P and components, for mounting the component on each printed circuit board P according to a flowchart described later. Create data for. Then, necessary data is recorded in each of the board-specific data files 36A, 36B, ... And the fixed part information file 37. The data on the printed circuit board P may be provided by an input operation by an operator instead of being provided from the database 35 as described above.

The board-specific data files 36A, 36B
Are provided for each of the various printed boards PA, PB, and include board information files, mounting information files, component information files, and the like. In the board information file, the outer size of the printed board, the conditions at the time of production, etc. are recorded. In addition, in the mounting information file,
As shown in FIG. 7, a mounting sequence number indicating the mounting sequence of each component mounted on the corresponding printed circuit board, and X, Y of each mounting position.
Data in which coordinates, used part numbers, and head numbers are associated with each other is recorded. In addition, in the parts information file, FIG.
As shown in, data in which the used part number is associated with the part size, shape, feeder position, feeder type, etc. is recorded. In addition, this part information file includes a parameter called "fixed part reference". For parts to be fixed parts, which will be described later, the fixed part number in the fixed part information file is given as this parameter, and the parts are not fixed parts. For this parameter is "0"
It is said.

The fixed component information file 37 is shared by various printed circuit boards PA, PB ...
Components and the like that are commonly used for a plurality of types of printed circuit boards PA, PB ... Are fixed components, and the fixed component number (identification code) is associated with the component size, shape, feeder position, feeder type, and the like. Recorded data (FIG. 9) is recorded. In addition, there is one fixed part information file 37,
When the amount of data is sufficiently larger than the number of feeders that can be arranged in one component supply unit 3 (one batch exchange cart 26), the fixed component information file 37 is divided for each component supply unit 3. The fixed component information may be recorded so that it can be selected according to the component supply unit 3. Specifically, assuming that the fixed component information file 37 has a data amount of 1 to 500 and the number of feeders that can be arranged in one component supply unit 3 is 50 columns,
As shown in FIG. 10, 1 in the fixed component information file 37
No. 50 is for the first component supply unit, No. 51-100 is for the second component supply unit, No. 101-150 is the third
Data recording area D such as for parts supply unit
(Α), D (β) and D (γ) are classified.

Then, the board-specific data file 36
A, 36B ... And the contents of the fixed part information file 37 are created by the data creating means 32, and the contents of these files are displayed by the display means 38 when necessary, and the contents of these files are displayed on the feeder in the parts supply unit 3 according to the display. Head 1 in assembly and head unit 5
6, the assembling and the like are performed, and at the time of mounting, the contents of the file are read by the mounting control means 31, and the mounting work is sequentially performed according to the contents.

A method of creating data by the data creating means 32 will be described with reference to FIGS. 11 to 14.

FIG. 11 shows a main routine for creating board data. As the process of creating the board data, first, information about the printed board to be created data such as the board size and the fiducial mark attached to the board is created (step S1), and then the information from the CAD 34 is created. Based on this, the mounting position of the component on the target printed circuit board is input (step S2). Subsequently, the parts to be used are determined, information such as the part size, the recognition method, the type of the head and the feeder is created (step S3), and the correction method at the time of mounting the parts is determined, and the fiducial mark, Information such as a bad mark is given (step S4). The processes of steps S1 to S4 are performed based on signals from the input operation unit 33, the database 35, and the like.

Next, the feeder position is determined (step S
5), the determination of the suction head (step S6), and the determination of the mounting order (step S7) are performed based on the optimization calculation process for enhancing the mounting efficiency. That is, at the time of component mounting by the head unit 5 including the plurality of suction heads 16, the plurality of components are simultaneously or continuously suctioned from the component supply unit by each suction head, and then the head unit 5 moves onto the printed circuit board. The work of sequentially mounting the components is repeated until all the mounted components are mounted on the printed circuit board. The mounting efficiency on the target printed circuit board depends on the placement of the mounted components, the placement of the feeder of the component supply unit, and the head unit. Various heads 16 in 5
It changes depending on how to set the layout and the mounting order of components. Then, the feeder arrangement or the like, which is advantageous for increasing the mounting efficiency on the target printed board, can be obtained by computer analysis using an appropriate method.

Therefore, the feeder position, the suction head, and the mounting order are determined by the mount data optimizing arithmetic processing (processing by computer analysis for improving the mounting efficiency).

Particularly in the feeder position determination process (step S5), in addition to the mount data optimization calculation process, it is possible to supply components mounted on a plurality of types of printed circuit boards to one component supply unit 3. The feeder position is determined so that a rational layout can be obtained for these multiple types of printed circuit boards. A specific example of the method for determining the feeder position will be briefly described with reference to FIGS. 12 and 13.

As described above, the first component supply unit 3
There are three types of printed circuit boards PA, PB, P in the group α.
It is assumed that a feeder for the components to be mounted on C is provided, and the number of substrate processes (mounting process frequency) per fixed period is, for example, 500 lots for the substrate PA and 1 for the substrate PB.
It is assumed that the number of substrates PA is the largest, such as 00 lots and substrate PCs is 10 lots, followed by substrate PB and substrate PC. In this case, FIG. 13 is a schematic diagram showing how to arrange the feeders in the first component supply unit 3
become that way.

That is, first, as shown in FIG. 13A, the arrangement of the feeders for supplying the components mounted on the substrate PA having the highest mounting frequency is set. At this time, the feeders are always installed at the specific positions. Specially shaped parts that are desirable (eg parts supplied with a stick feeder)
For this, the feeder position is fixed by using this as a fixed component, and for example, the left end side of the component supply unit 3 in the drawing is set as such a feeder arrangement portion Ff.
For components mounted on the substrate PA other than this, the placement of the feeders is set by the above-described optimization calculation processing, and for example, the range FA indicated by hatching in FIG. The feeder arrangement is determined so that the feeders of the components mounted on the substrate PA are arranged in an optimum arrangement.

Further, among the components mounted on the substrate PA, only the common components mounted on the other substrates (both of the substrates PB and PC or both of them) in the same substrate group α and the substrate PA are mounted. 13 (b).
FA0 in the inside is a portion in which the feeder for the common component is arranged, and FA1 is a portion in which the feeder for the unique component is arranged. In order to save the feeder arrangement space, the common component feeder (the feeder in the FA0 portion) is shared by a plurality of substrates. In principle, the component information of the components mounted on the board PA is recorded in the component information file (see FIG. 8) in the board-specific data file, but the common component is a fixed component and its component information is stored. Is recorded in the fixed part information file (see FIG. 9), information on common parts is shared.

When the placement of the feeder on the substrate PA is set in this manner, the placement of the feeder on the substrate PB is set next. In this case, among the components mounted on the board PB, the feeders arranged in the above FA0 portion are used for the components common to the substrate PA, and for the other components, the portions where the feeders are arranged with respect to the substrate PA. , And the placement of the feeder is set by performing an optimizing calculation process for increasing the mounting efficiency within a range that satisfies these conditions. For example, in the case of FB in FIG. A feeder is placed in the part.

FB0 in FIG. 13D is the substrate PB.
Among the components mounted on the board, a portion where a feeder for a component common to the board PC is arranged, FB1 is a portion where a feeder for a unique component mounted only on the board PB is arranged, and a feeder for the portion FB0. Are shared by the substrate PB and the substrate PC. Therefore, a feeder of a common component for at least two boards is arranged in a portion F0 which is a combination of the portion FA0 and the portion FB0. Then, in principle, the component information of the component mounted on the board PB is recorded in the component information file in the board-specific data file.
The common component is a fixed component, and the component information is recorded in the fixed component information file.

When the placement of the feeders on the substrates PA and PB is set, the placement of the feeders on the substrate PC is set next. In this case, among the components mounted on the substrate PC, the components common to both or one of the substrates PA and PB use the feeder disposed in the above F0 portion, and the other components are the substrates. PA, P
The placement of the feeder is set in the remaining space excluding the placement portion of the feeder with respect to B, and the placement of the feeder is set by performing an optimizing calculation process for increasing the mounting efficiency within a range that satisfies these conditions. The feeder is arranged at the FC1 part in e).

A method of recording information in the board-specific data file and the fixed component information file in the above processing will be specifically described. For example, if components are mounted on the substrate PA at respective positions MA1, MA2 ... MAn shown in FIG. 12 (a), the component numbers (No1, 2, ...) Used for each mounting position (MA1, MA2 ...). Attached, as well as FIG.
Mounting information (coordinates of mounting position, mounting order, etc.) and component information (component size, shape, feeder position, etc.) are obtained by the process shown in FIG. 1, and are recorded in the mounting information file and the component information file for the board PA. If components are mounted on the board PB at respective positions MB1, MB2 ... MBn shown in FIG. 12B, the mounting positions (MB
1, MB2 ...) are assigned the used part numbers (No 1, 2, ...) and mounting information and parts information are requested.
It is recorded in the mounting information file and the component information file for the board PB.

In this case, since the file for the board PA and the file for the board PB are provided separately and there is no relationship between the parts numbers used, etc., the information of the board-specific data file for the board PA is reflected on the board PB. It is not possible to exchange the information of the board-specific data file, and it is not possible to select the information about the common component from such a file and share it with each board. Therefore, regarding the common parts, information such as feeder positions is recorded in the fixed part information file 37 shown in FIG. 9 in association with the fixed part numbers assigned according to the types of parts, while the part information in the board-specific data file is recorded. By providing the fixed component reference parameter in the file, the information of the fixed component information file 37 is shared by each board.

The procedure of the processing for determining the feeder position (step S5 in FIG. 11) will be described in detail with reference to the flowchart of FIG.

In this feeder position determination routine,
First, the target substrate, the fixed substrate described later, the number of the component supply unit (collective exchange cart), and the like are selected as the creation conditions. Next, feeder movement 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.

Next, the target substrate is read (step S1).
3) In addition, in the fixed component information file 37, the information of other areas is masked so that only the area corresponding to the target component supply unit 3 (for example, the area Dα when the target substrate belongs to the substrate group α) is used. The processing is performed as necessary (step S14).

Next, it is judged whether or not the fixed part information is recorded in the corresponding area in the fixed part information file 37 (step S15). If there is fixed part information, the part information is read (step S16),
The components mounted on the target board and the fixed components are matched (step S17), and the feeder position of the used component to be the fixed components is determined (step S1).
8). Then, control goes to a step S19. If there is no fixed part information, the process moves from step S15 to step S19.

In step S19, it is determined whether or not there is a fixed substrate. Here, the fixed substrate means a substrate whose feeder position has already been determined in the substrate group to which the target substrate belongs. When it is determined that the fixed board is present, the mounting information file and the component information file of the fixed board are read (steps S20 and S21), and the position of the feeder used on the fixed board is checked from these information (step S22). ). Then, the process proceeds to step S23. If there is no fixed substrate, the process moves from step S19 to step S23.

In step S23, the feeder position of the fixed component such as the teaching component is determined, and for example, the portion Ff in FIG. 13 is set as the feeder position of the fixed component as described above.

Next, in step S24, each feeder position is assigned to an empty space in the feeder plate (component supply unit) (step S24). That is,
For example, as described above, the data creation processing is performed on the substrates PA, PB,
Assuming that the process is performed in the order of PC, when the substrate PA is the target substrate, the space other than the part Ff in FIG. 13 becomes an empty space in the component supply unit, and the optimization calculation process is performed within that space. The feeder arrangement for the substrate PA is determined. When the substrate PB is the target substrate, the space other than the portions of Ff and FA (FA0, FA1) in FIG. 13 becomes an empty space, and within the range, the feeder arrangement for the substrate PB is performed by the optimization calculation process. Is determined. When the substrate PC is the target substrate, the space other than the portions Ff, F0, FA1, and FB1 in FIG. 13 becomes an empty space, and within the range, the feeder arrangement for the substrate PC is determined by the optimization calculation process. The feeder placement thus assigned is recorded in a file along with other information about the part (part size, shape, feeder type, etc.). At this time, the unique component is written in the component information file in the board-specific data file, the common component is written in the fixed component information file 37, and the fixed component reference parameters are written in the component information file.

According to the method of this embodiment as described above,
In the mounting machine in which the component supply unit 3 can be collectively replaced by the batch exchange carriage 26, for example, the first component supply unit 3 is mounted on the three types of substrates PA, PB, and PC of the substrate group α. Since the feeders for the components to be mounted are provided, when the mounted substrate is any of these three types of substrates PA, PB, and PC, the components are supplied from the first component supply unit 3 and the feeder arrangement is changed. Does not need Moreover, since the feeder arrangement is set by the optimization calculation process for improving the mounting efficiency, and the optimization calculation process is performed in order from the board having the highest processing frequency, the layout of the feeder advantageous for the overall improvement of the mounting efficiency can be obtained. can get.

Further, as for the common parts, the feeder is commonly used for a plurality of boards.
The number of feeders is reduced as compared with the case where they are not shared, and the feeders are rationally arranged in the limited space within the component supply unit 3. Then, for common parts, information such as the feeder position is recorded in the fixed part information file, and the fixed part information file 37 can be used when targeting any of the boards PA, PB, PC. Sharing is effectively achieved.

A group β different from the above group α
The feeders of the components mounted on the substrates PD, PE, PF of No. 1 are arranged in the second component supply unit 3, and the arrangement of the feeders is also determined according to the arrangement of the feeders that can be placed in the first component supply unit 3. It In this way, since the feeders corresponding to a plurality of types (for example, three types) of substrates for each substrate group are arranged in the component supply unit 3, the component supply is performed when the mounted substrate is changed to a different group. It is only necessary to collectively replace the sub-units 3, and the work of replacing the feeder is greatly simplified as compared with the case of replacing the feeder or changing the layout of the feeder for each type of substrate.

The creation of data such as the feeder position and the work of arranging the feeders in accordance with the data are performed when, for example, the production (mounting process) of the printed circuit boards of the first board group α is performed. If the second board group β is performed and the first board group α is performed while the printed circuit boards of the second board group β are being manufactured (mounting processing), wasteful time is eliminated. Production and data creation can be performed efficiently.

In the case where the feeder arrangement is set for each group as described above and the information about the common parts is recorded in the fixed part information file 37 in order to share the feeders of the common parts in each group as described above, For example, if the fixed component information file is divided into areas D (α), D (β), ... At the time of reading and writing the fixed part information of the second group β,
There is no possibility of confusion or inability to process due to duplication with the fixed part information of the group α. That is, the fixed component information can be shared in the same group and can be distinguished for each group.

In the above embodiment, the fixed component information is recorded in one fixed component information file 37 in a maskable manner, but a fixed component information file is separately provided for each board group. You may stay.

In addition, in the above-described embodiment, in principle, the information on the components mounted on each board is recorded in the component information file of the board-specific data file, and only the common components are recorded in the fixed component information file 37. However, for example, after determining the feeder arrangement in the optimization calculation process for the substrate PA, all the component information of this substrate PA is written in the fixed component information file 37, and then the optimization calculation process for the substrate PB is free. All the component information of each board may be written in the fixed component information file 37 such that all the component information of this substrate PA is also written in the fixed component information file 37 after determining the placement of the feeders in the space.

[0056]

As described above, according to the present invention, the feeder is provided in the component supply unit installed in the component supply unit,
The component supply unit can be collectively replaced, and a required number of feeders are arranged so that the component supply unit can supply the components to be mounted on a plurality of types of printed circuit boards. Therefore, the feeder replacement work can be simplified. Moreover, when setting the placement of the feeders in the component supply unit, first, the placement of the plurality of feeders to which the components to be mounted on the first type printed circuit board should be fed is set to the optimal placement for increasing the mounting efficiency. For a feeder that supplies a component that is not common to at least a component mounted on the first type printed circuit board among components mounted on the second type printed circuit board,
It is arranged in the remaining space excluding the part where the feeder arrangement is already set in the feeder installable range of the component supply unit, and the placement of the feeder in this remaining space is determined by a predetermined optimization calculation process. As described above, since the processing for determining the placement of the feeders is sequentially performed for each board, the feeders can be arranged so as to enhance the mounting efficiency on a plurality of types of printed boards as much as possible.

In particular, a plurality of types of printed circuit boards can be processed by sequentially performing the processing for determining the feeder placement by the optimization calculation process for each of the plurality of types of printed circuit boards from the printed circuit board with the highest mounting frequency. On the other hand, the efficiency of work such as mounting can be reasonably improved.

[Brief description of drawings]

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

FIG. 2 is a front view of a portion where a 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 batch exchange cart.

FIG. 6 is a block diagram showing an arithmetic root control system that performs processing such as determining feeder placement, creating 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 the contents of a parts information file of a board-specific data file.

FIG. 9 is a diagram showing the contents of a fixed part information file.

FIG. 10 is a diagram showing an area of a fixed part information file.

FIG. 11 is a flowchart showing a procedure for creating board data.

12A and 12B are views showing component mounting positions and the like on different printed circuit boards.

13A to 13E are explanatory views schematically showing a feeder position determination method.

FIG. 14 is a flowchart showing a procedure for determining a feeder position.

[Explanation of symbols]

 P, PA to PF Printed circuit board 3 Component supply unit 4 Tape feeder 5 Head unit 16 Head 30 Control unit 32 Data creation means 36A to 36F Board-specific data file 37 Fixed component information file

Claims (6)

[Claims] 1. A component supply unit, a component mounting unit on which a printed circuit board is installed, and a head for adsorbing a component from the component supply unit and mounting the component on the printed circuit board of the component mounting unit. In the part, a parts supply unit with a multi-row feeder for parts supplied is attached,
In a mounting machine in which a target substrate selected from a plurality of types of printed circuit boards is installed in the component mounting unit, first, when setting the placement of the feeder in the component supply unit, first type Arrangement of multiple feeders to supply the components mounted on the printed circuit board of
Among the components mounted on the second type printed circuit board, at least the components mounted on the first type printed circuit board are determined by a predetermined optimizing calculation process that makes an optimal arrangement for increasing the mounting efficiency. For feeders that supply non-common parts, place them in the remaining space excluding the parts where the feeder layout has already been set in the above-mentioned component supply unit, and perform a predetermined optimization calculation of the feeder placement in this remaining space. The feeder arrangement in the component supply unit is set so that the components mounted on each of a plurality of types of printed circuit boards can be supplied by sequentially performing such feeder arrangement determination processing. A component supply method for a mounting machine, which is characterized in that 2. The mounting machine according to claim 1, wherein the processing for determining the feeder placement by the optimization calculation processing for each of the plurality of types of printed circuit boards is performed in order from the printed circuit board having the highest mounting processing frequency. Parts supply method. 3. A feeder for a common component that supplies a component commonly mounted on a plurality of types of boards is shared by a plurality of types of substrates, and a feeder for a unique component that supplies a unique component for each type of board is The feeder arrangement is set so that the feeders for the common components and the feeders for the unique components for the various substrates are collectively provided in the component supply unit, respectively, for each of the various substrates. 2. The component supply method of the mounting machine described in 2. 4. The board-specific data including the information on the parts to be mounted, the parts mounting position, and the position of the feeder for supplying the parts is recorded in the board-specific data file for each of the various printed boards, and the common parts are recorded. Fixed part data including an identification code fixedly determined according to the type of each part and a position of a feeder supplying the part specified by the identification code is recorded in the fixed part data file. Claim 3
Parts supply method for the mounter described. 5. 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. A feeder is provided so that the components mounted on the printed circuit board can be supplied, and the component supply unit can be replaced with respect to the mounting machine body, depending on the printed circuit board group to which the printed circuit board to be processed belongs. The component supply method for a mounter according to claim 1, wherein the component supply unit is selectively attached to the mounter main body. 6. Fixed component data is recorded in a fixed component data file, which includes an identification code fixedly determined for each predetermined component according to the type of the component and a position of a feeder that supplies the component specified by the identification code. And
The component supply method for a mounter according to claim 5, wherein the fixed component data is recorded separately for each component supply unit.