JPH06209199A - Mounting process management system - Google Patents

Abstract

PURPOSE:To provide a mounting process management system capable of reducing worker's load for effectively operating a mounting line. CONSTITUTION:Mounting machine data based 1, 2, 3 and a trial calculation means 5 are installed. The data bases 1, 2, 3 are provided with parameters for trial calculation of parts mounting time for each mounting machine of component mounting line constituted of a plurality of mounting machines, trial calculation algorithm of the parameters, and NC program forming module. The trial calculation means 5 clasifies components to be mounted in the component mounting line into specified classifications, makes groups of components, and executes trial calculation of the time by using the mounting data bases which time is necessary for mounting the group of components for each group. A distributing means 6 distributes components to be mounted in a group unit to each mounting machine, on the basis of the trial calculation result, so as to make the working time of each mounting machine as uniform as possible. A means 7 forms an NC program for controlling each mounting machine, on the basis of the distribution result and the NC program forming module of the mounting machine data bases 1, 2, 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting process control system having a line balance function for a component mounting line composed of a plurality of mounting machines. Here, the line balance function refers to a function of automatically allocating the mounted components to the respective mounting machines forming the component mounting line.

[0002]

2. Description of the Related Art Generally, mounting of electronic components on a printed circuit board is performed by a mounting line in which a plurality of electronic component mounting machines are connected. As a system for managing such a mounting line, a mounting process management system as shown in FIG. 9 has already been developed (Patent Application Publication 1992, 2056).
No. 06 publication). An engineering work station (hereinafter referred to as EWS) 101 is used to input various printed circuit boards input by an operator, the number of printed boards, and NC (Numerical Control).
) A daily production plan is made based on the program and the NC program is sent to the personal computer 102 that manages the mounting line according to this plan. Also,
The EWS 101 collects performance data from the personal computer 102.

The personal computer 102 is an EWS
The NC program sent from 101 is mounted on each mounting machine 11
1, 112, 113 to the mounting machines 111, 11
The components 2 and 113 are mounted. Further, the personal computer 102 includes the mounting machines 111, 112, 113.
Collect the actual performance data for each and collect the actual performance data by EWS
Send to 101. Regarding the creation of NC program, EW
In step S101, a component mounting simulation is performed based on the NC program input by the operator.
Program optimization processing is performed.

[0004]

In the mounting process management system of FIG. 9, mounting of electronic components on a printed circuit board is carried out in a flowable manner by three mounting machines 111, 112, 113. In such a mounting line, the first mounting machine 11
If the work of No. 1 is not completed, it is not possible to shift to the work of the second mounting machine 112. Therefore, for example, when the working time by the first mounting machine 111 is much longer than the working time by the second mounting machine 112, the second mounting machine 1
The time when 12 is in the standby state becomes long. The same can be said between the second mounting machine 112 and the third mounting machine 113.

The time during which the mounting machine is in the standby state is called idle time, and in order to operate the mounting line efficiently, it is necessary to minimize the idle time of each mounting machine that constitutes the mounting line. . In order to shorten the idle time of each mounting machine that constitutes the mounting line, it is necessary to make the working time of each mounting machine as uniform as possible.

By the way, the working time of each mounting machine changes depending on the type, mounting position and number of components to be mounted. Further, since the mounting line is composed of various types of mounting machines, even if the components are of the same type and mounting position, the working time varies depending on the model of the mounting machine mounting the components. Therefore, in order to operate the mounting line efficiently, it is necessary to allocate components to each mounting machine in consideration of such conditions related to the working time so that the working time of each mounting machine becomes as uniform as possible. is there.

Conventionally, since the operator creates the NC program in consideration of various conditions related to the working time so that the working time of each mounting machine constituting the mounting line is as uniform as possible, There is a problem that the burden on the person is heavy.

It is an object of the present invention to provide a mounting process management system capable of reducing the burden on a worker in order to improve the operating efficiency of a mounting line.

[0009]

A mounting process management system according to the present invention is provided for each mounting machine forming a component mounting line in a mounting process management system for managing a component mounting line composed of a plurality of mounting machines. , A parameter for trial calculation of component mounting time and its trial calculation algorithm, a mounting machine database equipped with an NC program creation module, components mounted on a component mounting line are classified into predetermined groups and grouped, and the Estimate the time required to mount the components belonging to the group using the mounter database, and based on the trial calculation results by the trial calculator, in the component mounting line so that the work time of each mounter is as equal as possible. Distribution means for distributing mounted parts to each mounting machine in group units, and Based on the NC program creation module allocation result and mounter database by partial unit, characterized in that it comprises an NC program creation means for creating an NC program for controlling the respective mounting machine.

[0010]

The mounting machine database including the parameters for trial calculation of the component mounting time, its trial calculation algorithm, and the NC program creation module is provided for each mounting machine constituting the component mounting line. The components to be mounted on the component mounting line are classified into predetermined categories and grouped, and the time required to mount the component group belonging to the group is calculated for each group using the mounter database. Based on the result of this trial calculation, the components mounted on the component mounting line are distributed to each mounting machine in group units so that the working time of each mounting machine becomes as equal as possible. This distribution result and N of the mounting machine database
An NC program for controlling each mounting machine is created based on the C program creation module.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment in which the present invention is applied to a mounting line for mounting an electronic component on a printed board will be described below with reference to the drawings.

The overall construction of the mounting process control system in this embodiment is the same as that shown in FIG.
This is different from the conventional system in that the line balance module is incorporated in S101.

FIG. 1 shows the configuration of the line balance module.

The line balance module comprises three mounting machines 111, 112, 113 (see FIG. 9) that compose the mounting line.
Mounter database 1, 2, 3 provided for each
An input data storage unit 4, an ES work data creation unit 5, an expert system 6 and an NC program creation unit 7 are provided.

As shown in FIG. 2, the mounter database 1, 2, 3 provided for each mounter 111, 112, 113 has a mounter name storage area E1, a first data storage area E2, and a mounter name storage area E2, as shown in FIG. A 2 data storage area E3, a mounting time trial calculation algorithm storage area E4 and an NC program creation module storage area E5 are provided.

An identifier (MACHIN ID) indicating the mounting machine is stored in the mounting machine name storage area E1. The first data storage area E2 stores an identifier (PARTS ID) indicating the type of electronic component that can be mounted by the mounting machine.
In addition, for each component type identifier (PARTS ID), among the parameters used in the mounting time trial calculation algorithm, parameters that depend on the component type (XY SPD, IDX SPD, etc)
Is stored as additional data.

Among the parameters used in the mounting time trial calculation algorithm, parameters (MAX TACT, etc) depending on the performance of the mounting machine are stored in the second data storage area E3. The mounting time trial calculation algorithm storage area E4 stores the mounting time trial calculation algorithm. The mounting time trial calculation algorithm uses the parameters stored in the first and second data storage areas to trial calculate the time required to mount all the components belonging to the component group classified by the predetermined classification. It is an algorithm.

An NC program creation module is stored in the NC program creation module storage area E5. The NC program creation module is provided by the expert system 6 for each mounter 111, 11 of the component group.
This is a module for creating an NC program based on the result of distribution to 2, 113.

The input data storage unit 4 stores the data input by the operator. That is, as shown in FIG. 3, the input data storage unit 4 stores a component identifier (COM) assigned to each electronic component mounted on the mounting line.
PONENT ID), a component type identifier that indicates the type of each component
(PART ID), X coordinate of the mounting position of each component (X POSITION),
The Y coordinate (Y POSITION) of the mounting position of each component and the rotation angle (ROTATION) at the mounting position of each component are stored. In FIG. 3, the area indicated by RESERVE is used as a reserve area.

The ES work data creation unit 5 creates input data for the expert system 6, and executes a component grouping process, a group-specific mounting time trial calculation process, and a line configuration data storage process.

In the parts grouping process, the data on all the parts stored in the input data storage unit 4 are grouped by the kind of parts (PARTS ID) as shown in FIG. A group identifier (GROUP ID) is attached to each group.

In the group-wise mounting time trial calculation process, the time required to mount all the components belonging to the group on the printed circuit board is trial-calculated for each group grouped by the component grouping process, as shown in FIG. As a result, the trial calculation result is the first area 61 in the working memory 61.
stored in a. In addition, a plurality of mounting machines 111, 112,
For the component groups that can be mounted in 113, the mounting time is calculated for each mounting machine and stored. The trial calculation of these mounting times is based on the mounting machine databases 1, 2,
This is performed using the mounting time trial calculation algorithm stored in 3.

In the first area 61a in the working memory 61, as shown in FIG. 5, a group identifier (GROUP ID) and a mounting machine name (MACHIN ID) are provided for each serial number (JOB ID) of the trial calculation result.
Also, the trial result of mounting time by group (TIME) is stored. In FIG. 5, the area indicated by RESERVE is used as a reserve area.

In the line configuration data storage processing, the types and arrangement order of the respective mounting machines 111, 112, 113 forming the mounting line are stored in the working memory 61 provided in the expert system 6 as shown in FIG. Second area 6
Stored in 1b. In this example, the second area 61b in the working memory 61 is the mounting machine 1 which constitutes the mounting line.
It is divided into three areas according to the number of 11, 112, and 113. Then, the mounting machine 11 is installed in each of the divided areas.
The identifiers indicating the mounting machines are stored one by one according to the arrangement order of 1, 112, and 113. In FIG. 6, MA
CHIN 1 is the mounter 111, MACHIN 2 is the mounter 112,
MACHIN 3 indicates the mounters 113, respectively.

The second area 61 in the working memory 61
Each area divided into the mounting machines 111, 112, and 113 in b has two work areas SE1 and SE2, respectively. The work area SE2 stores an identifier indicating a component group assigned to the mounting machine by the expert system 6 described later. Work area SE1
In the field, the time required for mounting all the components belonging to all the component groups assigned to the mounting machine on the printed circuit board by the mounting machine is stored.

The expert system 6 includes, in addition to the working memory 61 described above, each mounting machine 1 that constitutes a mounting line.
Knowledge base unit 62 in which rules for allocating parts to 11, 112, 113 are stored, and working memory 6
The inference system unit 63 is provided for determining how to apply the rule stored in the knowledge base unit 62 to the group-based mounting time trial calculation result stored in the first area 61a.

According to the rules stored in the knowledge base section 62, each mounting machine 111 constituting the mounting line,
The data stored in the first area 61a of the working memory 61 is stored in the respective mounting machines 111 in the second area 61b so that the working time by 112, 113 is as uniform as possible.
The work areas SE2 in the areas 112 and 113 are sequentially allocated. FIG. 7 shows the contents of the second area 61b in the middle of the distribution work, and FIG. 8 shows the contents of the second area 61b when the distribution of all the component groups to the respective mounting machines 111, 112, 113 is completed. It is shown.

The NC program creating section 7 includes a working memory 6
The result of component group allocation to each mounter 111, 112, 113 created in the work area SE2 of the first area 61b of No. 1 and the NC program creation module stored in each mounter database 1, 2, 3 Based on this, NC programs for controlling the respective mounting machines 111, 112, 113 are created. The NC program created in this way is sent to the personal computer 102 (see FIG. 9) for controlling the respective mounting machines 111, 112, 113. The personal computer 102 is
Each mounting machine 11 according to the NC program sent
1, 112, 113 are controlled.

According to the above-described embodiment, the electronic parts are mounted on each mounting machine 11 so that the working time of each mounting machine 111, 112, 113 constituting the mounting line is as uniform as possible.
Since it is automatically assigned to 1, 112, 113, it is possible to improve the operation efficiency of the mounting line without imposing a burden on the worker. In addition, by selecting the mounting machine database according to the mounting machines constituting the mounting line, it is possible to deal with various mounting lines without changing the distribution rule.

[0030]

According to the present invention, it is possible to reduce the burden on the operator in order to improve the operation efficiency of the mounting line.

[Brief description of drawings]

FIG. 1 is an electrical block diagram showing a configuration of a line balance module.

FIG. 2 is a schematic diagram showing the contents of a mounter database.

FIG. 3 is a schematic diagram showing a part of the contents of an input data storage unit.

FIG. 4 is a schematic diagram for explaining a grouping process by an ES work data creation unit.

FIG. 5 is a schematic diagram showing the contents of a first area in the working memory.

FIG. 6 is a schematic diagram showing the contents of a second area in the working memory.

FIG. 7 is a schematic diagram showing the contents of the second area in the work memory during the progress of the sorting work by the expert system.

FIG. 8 is a schematic diagram showing the contents of the second area in the work memory when the sorting work by the expert system is completed.

FIG. 9 is an electrical block diagram showing a conventional example of a mounting process management system.

[Explanation of symbols]

 1, 2, 3 Mounting machine database 4 Input data storage unit 5 ES work data creation unit 6 Expert system 7 NC program creation unit 61 Working memory 62 Knowledge base unit 63 Inference system unit 101 EWS 102 Personal computer 111, 112, 113 Implementation Machine

Claims (1)

[Claims] 1. A component mounter including a plurality of mounters.
In the mounting process management system that manages the components, it is provided for each mounting machine that composes the component mounting line.
Parameters for trial calculation of mounting time and its trial calculation
Equipped with algorithm and NC program creation module
The mounting machine database and the parts mounted on the parts mounting line are classified according to a predetermined classification.
And group them, and each group belongs to that group
The time required to mount the component group
Based on the results of the trial calculation by the trial calculation means and the trial calculation means.
Component mounting line so that business hours are as equal as possible
Distributing the parts mounted in the group to each mounting machine
Distributing means, and the distribution result by the allocating means and N of the mounting machine database
Control each mounting machine based on the C program creation module.
NC program to create an NC program to control
A mounting process management system including a creating means.