JP4897392B2 - Line selection method, component mounting board production method, and line selection program - Google Patents

Description

  The present invention relates to a line selection method for selecting one line from a plurality of lines each producing a component mounting board.

Conventionally, when there are a plurality of lines that produce component-mounted circuit boards, a technique for comparing the capabilities of the respective lines and selecting a line with the shortest work time has been disclosed (for example, see Patent Document 1). .)
JP 2002-290095 A

  When new and old lines are mixed in a factory, the conventional technology tends to select only new lines capable of high-speed production. In other words, the line has an old production line with a slow production tact time, high power consumption, and a low precision of microchip parts, and a new model with a fast production tact time, low power consumption, and good precision of microchip parts. However, in the conventional method, a new type of line with a fast production tact time is selected.

  However, depending on the board to be produced, there are those with a small number of mounted components and those with a small number of production. Even if such a board is produced on an old-fashioned line, it sufficiently satisfies the requirements for component mounting accuracy and production time of the mounting board. For this reason, production using such a new line up to such a mounting board means that production is carried out on an overperformance line. For this reason, a situation where a substrate that should originally be produced in the new line cannot be produced in the new line at a desired time occurs, or the time during which the old line is stopped increases. Therefore, when viewed as a whole factory, there is a problem that the production efficiency of the substrate deteriorates.

  In general, when planning a production plan for a board, assignments are made to vacant lines in order from the board with the highest priority, that is, the board with the short delivery time, based on the priority such as the delivery date. .

  However, if a production plan is made based only on the priority such as the delivery date, component mounting on the board can be completed within the delivery date, but on the other hand, depending on the line, a board that is not suitable for production must be produced. A situation that must be done occurs. That is, for example, a situation occurs in which a substrate including components that require mounting accuracy must be produced on an old-style line with poor mounting accuracy. For this reason, there exists a problem that the request | requirement of the component mounting precision of the board | substrate for production cannot be satisfy | filled.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a line selection method and the like that can improve the production efficiency of a substrate when viewed as a whole factory.

  It is another object of the present invention to provide a line selection method that can select a line suitable for the characteristics of the production target substrate.

  In order to achieve the above object, a line selection method according to the present invention is a line selection method for selecting one line from a plurality of lines, each of which produces a component mounting board, using a computer. A board characteristic judgment step for judging the characteristics of the target board, and a priority parameter decision for deciding a parameter to be prioritized in the component mounting board based on the judgment result in the board characteristic judgment step and deriving a value of the parameter And a line selection step of selecting a line for producing the substrate that matches the characteristics of the substrate based on the value of the parameter derived in the priority parameter determination step.

  A board production line that matches the characteristics of the board to be produced is selected. For this reason, the production of old lines is possible for boards that can meet the requirements of component mounting accuracy and production time of mounting boards even if production is done on old lines, such as boards with a small number of products. Can be selected as a line. For this reason, it is possible to efficiently operate various lines regardless of whether the line is old or new, and it is possible to improve the production efficiency of the substrate when viewed as a whole factory.

  In addition, since the production line is selected in consideration of the characteristics of the board, it is possible to select a production line that can satisfy the requirements for the component mounting accuracy of the production target board. Specifically, when mounting small chip components or mounting components on boards where accuracy is required, production is performed on a new mounting line with high component mounting accuracy. Production may be performed on the production line.

  For example, in the board characteristic judging step, it is judged whether or not the number of mounting points of a board to be produced is equal to or less than a predetermined threshold value.

  In the priority parameter determination step, the power consumption when mounting the component, the mounting accuracy stability indicating the stability of the mounting accuracy when the component is mounted on the substrate, and the line when the production target substrate is changed A derivation step for deriving at least one of setup ease values indicating the ease of work that occurs with the change of the production target board for the component mounting machine to be configured; and A weighting step of weighting the value derived in the deriving step with a weight that makes it easier to select a line with an older year when the number of mounting points is equal to or less than a predetermined threshold value.

  A board with a small number of component mounting points can sufficiently meet the requirements for component mounting accuracy and mounting board production time even if it is produced on an old line. For this reason, an old-style line can be selected as a production line for the production of such a substrate. Therefore, it is possible to efficiently operate various lines regardless of whether the line is old or new, and it is possible to improve the production efficiency of the substrate when viewed as a whole factory.

  Note that the present invention can be realized not only as a line selection method including such characteristic steps, but also as a line selection device using characteristic steps included in the line selection method as a means. It can also be realized as a program for causing a computer to execute the characteristic steps included in the selection method. Needless to say, such a program can be distributed via a recording medium such as a CD-ROM (Compact Disc-Read Only Memory) or a communication network such as the Internet.

  When viewed from the factory as a whole, it is possible to provide a line selection method that can improve the production efficiency of the substrate.

  Further, it is possible to provide a line selection method that can select a line suitable for the characteristics of the production target substrate.

  Hereinafter, a substrate production system according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic diagram showing a configuration of a substrate production system.
The board production system includes a first line 100, a second line 200, a third line 300, and a line selection device 400 installed in the factory.

  The first line 100 is a state-of-the-art production line that mounts components on the board 20 and produces a component mounting board, and includes three state-of-the-art component mounting machines 30a.

  The second line 200 is an old production line that mounts components on the board 20 and produces a component mounting board, and is composed of three old type component mounting machines 30b.

  The third line 300 is a normal production line that mounts components on the board 20 to produce a component mounting board, and includes two latest state-of-the-art component mounters 30a and one old-style component mounter. 30b.

  That is, the first line 100, the third line 300, and the second line 200 are new in this order. For example, the new or old of the line is obtained by obtaining the average, minimum or maximum value of the manufacturing year, manufacturing date, or manufacturing date of the component mounting machine constituting the line, and based on this value Should be asked.

  The state-of-the-art component mounter 30a and the old-type component mounter 30b are component mounters that include a mounting unit for mounting components on a board. The configuration itself of these component mounters is the same as that of a conventional component mounter. Therefore, detailed description thereof will not be repeated.

  The line selection device 400 is a device that determines the characteristics of a component mounting board to be produced and selects a line that best matches the characteristics from the first line 100, the second line 200, and the third line 300. . Hereinafter, details of the line selection device 400 will be described.

FIG. 2 is a functional block diagram showing the internal configuration of the line selection device 400.
The line selection device 400 includes an arithmetic control unit 401, a display unit 402, an input unit 403, a memory unit 404, a program storage unit 405, a communication I / F (interface) unit 406, and a database unit 407.

  The arithmetic control unit 401 is a CPU (Central Processing Unit), a numerical processor, or the like, and loads and executes a necessary program from the program storage unit 405 to the memory unit 404 in accordance with an instruction from an operator, etc. Each component 402 to 407 is controlled.

  The display unit 402 is a CRT (Cathode-Ray Tube), an LCD (Liquid Crystal Display), or the like, and the input unit 403 is a keyboard, a mouse, or the like, and these are controlled by the arithmetic control unit 401 under the line selection device 400. And the operator interacts with each other.

  The communication I / F unit 406 is a LAN (Local Area Network) adapter or the like, and is used for communication between the line selection device 400 and the first line 100 to the third line 300. The memory unit 404 is a RAM (Random Access Memory) that provides a work area for the arithmetic control unit 401.

  The program storage unit 405 is a hard disk or the like that stores various programs that realize the functions of the line selection device 400. The program is a program for selecting a line for producing a component mounting board. Functionally (as a processing unit that functions when executed by the arithmetic control unit 401), a board characteristic determination unit 405a, a priority parameter determination unit 405b, The line selection unit 405c and the like are included.

  The database unit 407 is a hard disk or the like that stores input data used for line selection processing by the line selection device 400. The database unit 407 stores target component data 407a, power consumption data 407b, mounting accuracy stability data 407c, setup ease data 407d, board characteristic data 407e, weight table data 407f, and the like.

Hereinafter, various data stored in the database unit 407 will be described.
FIG. 3 is a diagram illustrating an example of the target component data 407a.

  The target component data 407a is data indicating a list of components that can be mounted or cannot be mounted for each line. Here, as examples of components, three types of chip components (chip component 0603 (also referred to as 0603 chip component), chip component 1005 (also referred to as 1005 chip component), chip component 2125 (also referred to as 2125 chip component)), QFP ( Quad Flat Package) and connectors. Here, the chip component 0603 is a component having a width of 6 mm and a length of 3 mm. The chip component 1005 is a component having a width of 10 mm and a length of 5 mm. Further, the chip component 2125 is a component having a width of 21 mm and a length of 25 mm.

  Further, it is shown that all types of components can be mounted on all of the first line 100, the second line 200, and the third line 300. It is assumed that whether or not a component can be mounted is determined in advance from a catalog or the like of a component mounter that constitutes a line, and the contents are stored in the target component data 407a.

FIG. 4 is a diagram illustrating an example of the power consumption data 407b.
The power consumption data 407b is data indicating the power consumption of components per mounting point. For example, the first line 100, which is the latest line, uses 0.1 units of power to mount one chip component, whereas the second line 200, which is the old line, requires 0.2 units. It has been shown that. The power consumption data 407b is calculated from the catalog of the component mounting machine or the actual value of the power consumption so far.

FIG. 5 is a diagram illustrating an example of the mounting accuracy stability data 407c.
The mounting accuracy stability data 407c indicates the stability of the mounting accuracy when the component is mounted on the board 20, and “1” indicates that the mounting accuracy is the most stable. “3” indicates that the mounting accuracy is unstable and requires attention. Further, “2” indicates that the mounting accuracy is intermediate between them. For example, focusing on the second line 200, which is the old line, the mounting accuracy stability of the chip component 2125 is “1”, indicating that the mounting accuracy is stable. The accuracy stability is “3”, indicating that care must be taken to mount the components stably. The mounting accuracy stability data 407c includes the inspection result when the component mounting board produced so far is inspected, the adsorption rate and mounting rate of the component on the component mounting machine, and the recognition of the component on the component mounting machine. It is calculated based on the actual value such as error rate.

FIG. 6 is a diagram illustrating an example of the setup ease data 407d.
In the setup ease data 407d, when the component mounting board to be mounted is changed, the component to be mounted is changed. Therefore, the work of teaching the component mounting machine the size of the changed component, etc. This shows the ease of a setup change operation such as an operation of replacing a component cassette set in a component supply section of a machine. For example, the value indicating the ease of setup of the first line 100 (hereinafter referred to as “setup ease value”) is “1”, which indicates that setup change is easy. Further, the setup ease value of the second line 200 is “3”, which indicates that setup change takes time. Furthermore, the setup ease value of the third line 300 is “2”, indicating that a normal time is required for the setup change. The setup ease data 407d is obtained from the actual time required for the setup change in the production so far.

FIG. 7 is a diagram illustrating an example of the substrate characteristic data 407e.
The board characteristic data 407e is data indicating the characteristics of the component mounting board to be produced. Here, the substrate characteristic data 407e indicates the identification of the substrates having the substrate names A, B, and C (hereinafter referred to as “substrate A”, “substrate B”, and “substrate C”, respectively). For example, with respect to the board A, the number of produced sheets is 50, and the number of component mounting points per board is 1000. The breakdown of the components to be mounted shows that the chip component 0603 has 120 points, the chip component 1005 has 800 points, the chip component 2125 has 50 points, the QFP has 20 points, and the connector has 10 points.

FIG. 8 is a diagram illustrating an example of the weight table data 407f.
The weight table data 407f is a weight used when calculating a value for determining line selection in a line selection process to be described later. A smaller value is assigned to an older line. That is, the weight of the second line 200 that is the old line is “1”, the weight of the first line 100 that is the latest line is “3”, and the weight of the third line 300 between them is “2”. It is. The smaller the weight, the easier the line selection unit 405c selects when selecting a line.

  Next, line selection processing by the line selection device 400 will be described. The line selection process is a process of selecting a line that matches the specification of the component mounting board that is most produced from the first line 100, the second line 200, and the third line 300.

FIG. 9 is a flowchart of the line selection process.
The board characteristic determining unit 405a extracts board characteristic data for each column from the board characteristic data 407e shown in FIG. 7, and determines whether or not the number of produced sheets included in the extracted board characteristic data is 100 or less. (S2). The reason for determining the number of produced sheets is as follows. That is, when the number of production is small, various values such as power consumption are weighted based on the weights shown in the weight table data 407f of FIG. 8 so that the old line is preferentially selected. . On the other hand, when the number of produced sheets is large, line selection is performed based on various values such as the amount of power used without weighting various values.

  When the number of produced sheets is 100 or less (YES in S2), the priority parameter determining unit 405b calculates the amount of power necessary for producing one board of interest for each line (S4). For example, when the board to be mounted is the board A, the amount of power necessary to produce one board A on the first line 100 is calculated as “103” according to the following equation. In addition, the electric energy of each component is obtained from the used electric energy data 407b shown in FIG.

Electric energy = Electric energy of chip parts x Number of chip parts mounted
+ QFP energy x QFP mounting points
+ Connector energy x Connector mounting points
= 0.1 × (120 + 800 + 50)
+ 0.2 × 20
+ 0.2 × 10
= 103

  Similarly, for the second line 200 and the third line 300, the electric energy required to produce the substrate A is “206” and “155”, respectively. It shows that the smaller the calculated value of power is, the less power is required to produce one substrate.

  Next, the priority parameter determination unit 405b calculates, for each line, the mounting accuracy stability when producing the substrate of interest (S6). For example, when the substrate to be mounted is the substrate A, the mounting accuracy stability when the substrate A is produced on the first line 100 is calculated to be “1000” according to the following equation. The mounting accuracy stability of each component is obtained from mounting accuracy stability data 407c shown in FIG.

Mounting accuracy stability =
Mounting accuracy stability of chip component 0603 x number of mounting points of chip component 0603
+ Mounting accuracy stability of chip component 1005 × Number of mounting points of chip component 1005
+ Mounting accuracy stability of chip component 2125 x number of mounting points of chip component 2125
+ QFP mounting accuracy stability x QFP mounting points
+ Connector mounting accuracy stability x Connector mounting points
= 1 × 120 + 1 × 800 + 1 × 50 + 1 × 20 + 1 × 10
= 1000

  Similarly, regarding the second line 200 and the third line 300, when the mounting accuracy stability at the time of producing the substrate A is obtained, it becomes “2900” and “1950”, respectively. The smaller the required mounting accuracy stability, the more stable the component mounting accuracy per board.

  Next, the priority parameter determination unit 405b calculates, for each line, a setup ease value when performing setup change on the substrate of interest (S8). For example, when the substrate to be changed is the substrate A, the setup ease value when changing to the substrate A in the first line 100 is determined to be “50” according to the following equation. The setup ease value of each line is obtained from the setup ease data 407d shown in FIG.

Setup ease value = Line setup ease value x Number of parts that need teaching (eg QFP mounting points)
= 1 x 20
= 20

  Similarly, regarding the second line 200 and the third line 300, when the setup ease value when the setup change is performed on the substrate A is calculated, they become “60” and “40”, respectively. The smaller the calculated setup ease value, the easier the setup change.

  Next, the priority parameter determination unit 405b weights the power consumption calculated in the power consumption calculation processing (S4) for each line based on the weight table data 407f shown in FIG. 8 (S10). For example, the power consumption of the board A is calculated as “103” for the first line 100, “206” for the second line 200, and “155” for the third line 300. The priority parameter determination unit 405b weights these with the weights “3”, “1”, and “2” of the respective lines. The weighted power consumption of the board A is obtained as “309” for the first line 100, “206” for the second line 200, and “310” for the third line 300, respectively.

  Next, the priority parameter determination unit 405b weights the mounting accuracy stability calculated in the mounting accuracy stability calculation processing (S6) for each line based on the weight table data 407f shown in FIG. 8 (S12). . For example, the mounting accuracy stability of the substrate A is calculated as “1000” for the first line 100, “2900” for the second line 200, and “1950” for the third line 300. The priority parameter determination unit 405b weights these with the weights “3”, “1”, and “2” of the respective lines. The weighted mounting accuracy stability of the board A is obtained as “3000” for the first line 100, “2900” for the second line 200, and “3900” for the third line 300, respectively.

  Next, the priority parameter determination unit 405b weights the setup ease value calculated in the setup ease value calculation process (S8) for each line based on the weight table data 407f shown in FIG. 8 (S14). . For example, the setup ease value when changing to the substrate A is calculated as “20” for the first line 100, “60” for the second line 200, and “40” for the third line 300. The priority parameter determination unit 405b weights these with the weights “3”, “1”, and “2” of the respective lines. The setup ease value for the weighted substrate A is obtained as “60” for the first line 100, “60” for the second line 200, and “80” for the third line 300, respectively.

  Next, the line selection unit 405c obtains, for each line, the sum of the weighted power consumption, the weighted mounting accuracy stability, and the weighted setup ease value obtained in S10 to S14 (S16). For example, if the board to be mounted is the board A and the line of interest is the first line 100, the weighted power consumption, weighted mounting accuracy stability, and weighted setup for the board A on the first line 100 Since the ease values are “309”, “3000”, and “60”, respectively, the sum of these values is “3369”. Similarly, the total values of the second line 200 and the third line 300 for the substrate A are obtained as “3166” and “4290”, respectively.

  FIG. 10 is a diagram showing various values for the substrate A calculated in the processes from S4 to S16.

  The line selection unit 405c selects the line having the smallest weighted total value obtained in the process of S16 as the line for producing the mounting target board (S18). For example, as shown in FIG. 10, for the substrate A, the weighted total values of the first line 100, the second line 200, and the third line 300 are “3369”, “3166”, and “4290”, respectively. Therefore, the line selection unit 405c selects the second line 200 having the smallest weighted total value as the production line for the substrate A.

  When the number of produced sheets exceeds 100 (NO in S2), the board characteristic determining unit 405a determines whether or not the number of mounting points of the mounting target board is 100 or less (S20). The reason for determining the number of mounting points is as follows. That is, when the number of mounting points is small, various values such as power consumption are weighted based on the weights shown in the weight table data 407f of FIG. 8 so that the old line is preferentially selected. . On the other hand, when the number of mounting points is large, the line selection is performed based on various values such as the amount of power used without weighting various values.

  When the number of mounting points is 100 or less (YES in S20), the above-described processing of S4 to S18 is executed. For example, since the number of produced boards B is 1000 and the number of mounting points is 50, the processes of S4 to S18 described above are executed.

  FIG. 11 is a diagram illustrating various values for the substrate B as well as various values for the substrate A illustrated in FIG. 10.

  The weighted total value in the substrate B is “165” in the first line 100, “60” in the second line 200, and “115” in the third line 300. As in the case of the substrate A, the weighted total value is as follows. Is selected as the production line for the substrate B.

  When the number of mounting points exceeds 100 (NO in S20 of FIG. 9), the power consumption calculation process (S22), the mounting accuracy stability calculation process (S24), and the setup ease value calculation process (S26) are executed. The These processes are the same processes as the power consumption calculation process (S4), the mounting accuracy stability calculation process (S6), and the setup ease value calculation process (S8) described above. Therefore, detailed description thereof will not be repeated here.

  The number of production and the number of mounting points of the substrate C exceeds 100. For this reason, when it is assumed that the board to be mounted is the board C, the values calculated in the processes of S22 to S26 are as shown in FIG.

  The line selection unit 405c calculates the total value of the power consumption, the mounting accuracy stability, and the setup ease value for each line (S28). The calculation result for the substrate C is as shown in FIG. 12. The total value of the first line 100 is “347”, the total value of the second line 200 is “609”, and the total value of the third line 300 is “478. 25 ".

  The line selection unit 405c selects the line with the minimum total value obtained in the process of S28 as the production line for the small mounting resistant substrate (S30). For example, as shown in FIG. 12, for the substrate C, the first line 100 having the minimum total value obtained in the process of S28 is selected as the production line for the substrate C.

In the selected production line, components are mounted on the board.
As described above, according to the embodiment of the present invention, an optimal line for producing a substrate can be selected based on the characteristics of the substrate. For this reason, it is possible to operate various lines efficiently regardless of whether the model is new or old, and it is possible to improve the production efficiency of the substrate when viewed as a whole factory.

  The production system according to the embodiment of the present invention has been described above, but the present invention is not limited to this embodiment.

  For example, in the above-described embodiment, the priority parameter determination unit 405b calculates the power consumption, the mounting accuracy stability, and the setup ease value as the priority parameters. However, it is not always necessary to calculate all of these, and the characteristics of the board Based on the above, priority parameters to be calculated may be limited.

  In the above-described embodiment, the number of boards produced and the number of mounting points are used as the board characteristics. However, the board characteristics are not limited to these. For example, the presence or absence of components that require mounting accuracy Alternatively, the presence or absence of a part that needs to be re-taught at the time of setup change may be used. In such a case, the priority parameter may be determined or the line weight may be changed according to the characteristics. For example, when there is a component that requires a predetermined mounting accuracy, the line weight may be changed so that a line with a mounting accuracy as good as possible is selected. Also, if all of the parts mounted on the board are parts that do not need to be taught again at the time of setup change, the line weight is set so that a line that does not need to be taught at the time of setup change is selected. May be changed.

  Furthermore, the function of the line selection device 400 may be provided in a component mounter that configures the first line 100, the second line 200, or the third line 300. In this case, the component mounter determines whether or not the board should be produced on the line to which it belongs, and produces only the board that is appropriate to produce. The determination as to whether or not it is appropriate may be made by comparing the sum calculated in S16 or S28 of FIG. 9 with a predetermined threshold value.

  Note that examples of microchip components that require mounting accuracy include 0402 chip components in addition to the above-described 0603 chip components. The 0402 chip component is a component having a width of 4 mm and a length of 2 mm.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  The present invention can be applied to a production line determination method, a production line determination device, etc. for selecting a production line for a component mounting board, and more particularly to a production line determination method, a production line determination device, etc. in a production site where old and new production lines are mixed. Applicable.

It is a schematic diagram which shows the structure of a board | substrate production system. It is a functional block diagram which shows the internal structure of a line selection apparatus. It is a figure which shows an example of object component data. It is a figure which shows an example of used electric energy data. It is a figure which shows an example of mounting precision stability data. It is a figure which shows an example of setup ease data. It is a figure which shows an example of board | substrate characteristic data. It is a figure which shows an example of weight table data. It is a flowchart of a line selection process. It is a figure which shows the various values with respect to the board | substrate A calculated by the process from S4 to S16 of FIG. It is a figure which shows the various values with respect to the board | substrate B. FIG. It is a figure which shows the various values with respect to the board | substrate C. FIG.

Explanation of symbols

20 Substrate 30a Latest component mounter 30b Old component mounter 100 1st line 200 2nd line 300 3rd line 400 Line selection device 401 Arithmetic control unit 402 Display unit 403 Input unit 404 Memory unit 405 Program storage unit 405a Substrate characteristic judgment 405b Priority parameter determination unit 405c Line selection unit 406 Communication I / F unit 407 Database unit 407a Target component data 407b Power consumption data 407c Mounting accuracy stability data 407d Setup ease data 407e Substrate characteristic data 407f Weight table data

Claims (7)

A line selection method for selecting one line from a plurality of lines each producing a component mounting board using a computer,
For each line and each component type, reference is made to the power consumption data indicating the amount of power required to mount one component on the production target board, and one production target for each of the plurality of lines For each component type mounted on the board, a multiplication value of the amount of power necessary for mounting the component of the component type and the number of components of the component type is calculated, and the multiplication values are totaled for all the component types. A power consumption calculating step for calculating a power consumption when mounting a component on one production target board;
For each line and each component type, refer to the mounting accuracy stability data, which indicates the stability of the mounting accuracy when the component is mounted on the production target board, and the lower the stability is, the higher the mounting accuracy is. For each of the plurality of lines, for each component type mounted on a single production target board, a multiplication value of the stability of the component type and the number of components of the component type is calculated. A mounting accuracy stability calculating step for calculating a mounting accuracy stability indicating the stability of the mounting accuracy when the component is mounted on one production target board by summing the multiplication values;
For each line, when the production target board is changed, it is a setup ease value indicating the ease of work that occurs with the change of the production target board with respect to the component mounting machine constituting the line, and the work is easy With reference to the setup ease data indicating the setup ease value indicating a relatively small value, the number of parts that need to be taught and the setup among the parts mounted on one production target board for each of the plurality of lines. A setup value that calculates the multiplication value with the ease value as a setup ease value that indicates the ease of work that occurs with the change of the production target board for the component mounters that make up the line when the production target board is changed. An ease value calculation step;
For each line, refer to weight table data in which a weight having a smaller value for older lines is shown, and for each of the plurality of lines, the power consumption calculated in the power consumption calculation step and the power consumption A weighted power consumption calculating step for calculating a product of weights as a weighted power consumption;
A weight that refers to the weight table data and calculates, for each of the plurality of lines, a product of the mounting accuracy stability calculated in the mounting accuracy stability calculation step and the weight as a weighted mounting accuracy stability. Mounting accuracy stability calculation step with
A weight that refers to the weight table data and calculates, for each of the plurality of lines, a product of the setup ease value calculated in the setup ease value calculation step and the weight as a weighted setup ease value. A stepped-up value calculation step,
A first sum calculating step for calculating a sum of the weighted power consumption, the weighted mounting accuracy stability, and the weighted setup ease value for each of the plurality of lines;
A first selection step of selecting a line having a minimum sum calculated in the first sum calculation step among the plurality of lines;
Line selection method including further,
A production number determination step for determining whether or not the production number of the production target substrate is equal to or less than a predetermined number threshold by referring to data indicating the production number of the production target substrate;
For each of the plurality of lines, a second sum calculating step for calculating a sum of the power consumption, the mounting accuracy stability, and the setup ease value;
A second selection step of selecting a line having a minimum sum calculated in the second sum calculation step among the plurality of lines;
In the production number determination step, when it is determined that the number of production target substrates is equal to or less than the predetermined number threshold, the power consumption calculation step, the mounting accuracy stability calculation step, and the setup ease value calculation A weighted power consumption calculating step, a weighted mounting accuracy stability calculating step, a weighted setup ease value calculating step, a first sum calculating step, and a first selecting step. Executed,
In the production number determination step, when it is determined that the number of production target substrates is larger than the predetermined number threshold, the power consumption calculation step, the mounting accuracy stability calculation step, and the setup ease A value calculating step, the second sum calculating step, and the second selecting step are executed.
The line selection method according to claim 1. further,
Whether or not the number of mounting points of components mounted on one production target board is equal to or less than a predetermined mounting point threshold by referring to data indicating the number of mounting points of components mounted on one production target board Mounting point determination step for determining
For each of the plurality of lines, a second sum calculating step for calculating a sum of the power consumption, the mounting accuracy stability, and the setup ease value;
A second selection step of selecting a line having a minimum sum calculated in the second sum calculation step among the plurality of lines;
In the mounting point determination step, when it is determined that the number of mounting points of a component mounted on one production target board is equal to or less than the predetermined mounting point threshold value, the power consumption calculation step and the mounting accuracy stability calculation A step of calculating a setup ease value, a weighted power consumption calculating step, a weighted mounting accuracy stability calculating step, a weighted setup ease value calculating step, and a first sum calculating step. And the first selection step is executed,
In the mounting point determination step, when it is determined that the number of mounting points of a component mounted on one production target board is larger than the predetermined mounting point threshold value, the power consumption calculation step and the mounting accuracy stabilization A degree calculation step, the setup ease value calculation step, the second sum calculation step, and the second selection step are executed.
The line selection method according to claim 1. further,
A production number determination step for determining whether or not the production number of the production target substrate is equal to or less than a predetermined number threshold by referring to data indicating the production number of the production target substrate;
In the production number judgment step, when it is judged that the production number of the production target board is larger than the predetermined number threshold, data indicating the number of mounting points of components to be mounted on one production target board is displayed. By referring to, a mounting point determination step for determining whether or not the mounting point number of a component mounted on one production target board is equal to or less than a predetermined mounting point threshold value;
For each of the plurality of lines, a second sum calculating step for calculating a sum of the power consumption, the mounting accuracy stability, and the setup ease value;
A second selection step of selecting a line having a minimum sum calculated in the second sum calculation step among the plurality of lines;
In the production number determination step, when it is determined that the production number of the production target board is equal to or less than the predetermined number threshold, or in the mounting number determination step, the number of mounting points of the components mounted on one production target board is When it is determined that the predetermined mounting score threshold or less, the used power amount calculating step, the mounting accuracy stability calculating step, the setup ease value calculating step, the weighted used power amount calculating step, The weighted mounting accuracy stability calculating step, the weighted setup ease value calculating step, the first sum calculating step, and the first selecting step are executed,
In the mounting point determination step, when it is determined that the number of mounting points of a component mounted on one production target board is larger than the predetermined mounting point threshold value, the power consumption calculation step and the mounting accuracy stabilization A degree calculation step, the setup ease value calculation step, the second sum calculation step, and the second selection step are executed.
The line selection method according to claim 1. A line selection method for selecting one line from a plurality of lines each producing a component mounting board using a computer,
(A) For each line and each component type, reference is made to the power consumption data indicating the amount of power required to mount one component on the production target board, and one piece for each of the plurality of lines. For each component type mounted on the production target board, a multiplication value of the amount of power required to mount the component of the component type and the number of components of the component type is calculated, and the multiplication value for all component types (B) A component is mounted on the production target board for each line and each component type. The mounting accuracy stability when the mounting accuracy is high, and the mounting accuracy stability data indicating a smaller value as the mounting accuracy is higher is referred to, and one production target board for each of the plurality of lines For each component type mounted on By calculating the product of the stability of the component type and the number of components of the component type, and summing the multiplication values for all component types, the mounting accuracy when the component is mounted on a single production target board A mounting accuracy stability calculating step for calculating the mounting accuracy stability indicating the stability of the product, and (c) changing the production target board for the component mounting machines constituting the line at the time of changing the production target board for each line. Each of the plurality of lines with reference to the setup ease data indicating the setup ease value indicating the ease of the work that occurs along with the setup ease value indicating a smaller value as the work is easier. About the component mounter that configures the line when changing the production target board, the product of the number of parts that need to be taught and the setup ease value among the parts mounted on one production target board. For change of production target board A calculation step for performing a setup ease value calculation step of calculating a setup ease value indicating the easiness of work have occurred, one or two steps of,
For each line, refer to weight table data in which a weight having a smaller value as the line has an older model year, and for each of the plurality of lines, the power consumption calculated in the calculation step, the mounting accuracy A weighting step of calculating a multiplication value of the weight for each of one or two values of stability and the setup ease value;
A first sum calculating step for calculating the sum of one or two multiplication values calculated in the weighting step for each of the plurality of lines;
A first selection step of selecting a line having a minimum sum calculated in the first sum calculation step among the plurality of lines;
Line selection method including A component mounting board production method for selecting one line from a plurality of lines each producing a component mounting board and producing a component mounting board in the selected line,
The computer refers to the power consumption data indicating the amount of power required to mount one component on the production target board for each line and each component type, and one for each of the plurality of lines. For each component type mounted on the production target board, a multiplication value of the amount of power required to mount the component of the component type and the number of components of the component type is calculated, and the multiplication value for all component types A power consumption calculating step for calculating a power consumption when mounting a component on a single production target board,
Mounting accuracy stability data that indicates the stability of the mounting accuracy when a computer mounts a component on the production target board for each line and each component type, and shows a smaller value as the mounting accuracy increases. With respect to each of the plurality of lines, for each component type mounted on one production target board, a multiplication value of the stability of the component type and the number of components of the component type is calculated. A mounting accuracy stability calculating step for calculating a mounting accuracy stability indicating the stability of the mounting accuracy when the component is mounted on one production target board by summing up the multiplication values for the component types;
When the computer changes the production target board for each line, the computer has a setup ease value indicating the ease of work that occurs with the change of the production target board to the component mounting machine that constitutes the line. A part that needs to be taught among parts mounted on one production target board for each of the plurality of lines with reference to setup ease data indicating a setup ease value indicating a smaller value as it is easier The multiplication value of the number and the setup ease value is used as a setup ease value that indicates the ease of work that occurs with the change of the production target board for the component mounters that make up the line when the production target board is changed. A setup ease value calculation step to calculate;
For each line, the computer refers to weight table data indicating a weight having a smaller value for older lines, and used power calculated in the used power amount calculating step for each of the plurality of lines. A weighted power consumption calculating step of calculating a product of the amount and the weight as a weighted power consumption;
A computer refers to the weight table data, and for each of the plurality of lines, a product of the mounting accuracy stability calculated in the mounting accuracy stability calculation step and the weight is used as a weighted mounting accuracy stability. A weighted mounting accuracy stability calculating step to calculate;
A computer refers to the weight table data, and for each of the plurality of lines, a multiplication value of the setup ease value calculated in the setup ease value calculation step and the weight is used as a weighted setup ease value. A weighted setup ease value calculation step to calculate;
A first sum calculating step in which a computer calculates a sum of the weighted power consumption, the weighted mounting accuracy stability, and the weighted setup ease value for each of the plurality of lines;
A computer including a first selection step of selecting a line having a minimum sum calculated in the first sum calculation step among the plurality of lines;
A component mounting board production method characterized by the above. A program for selecting one line from a plurality of lines each producing a component mounting board,
For each line and each component type, reference is made to the power consumption data indicating the amount of power required to mount one component on the production target board, and one production target for each of the plurality of lines For each component type mounted on the board, a multiplication value of the amount of power necessary for mounting the component of the component type and the number of components of the component type is calculated, and the multiplication values are totaled for all the component types. A power consumption calculating step for calculating a power consumption when mounting a component on one production target board;
For each line and each component type, refer to the mounting accuracy stability data, which indicates the stability of the mounting accuracy when the component is mounted on the production target board, and the lower the stability is, the higher the mounting accuracy is. For each of the plurality of lines, for each component type mounted on a single production target board, a multiplication value of the stability of the component type and the number of components of the component type is calculated. A mounting accuracy stability calculating step for calculating a mounting accuracy stability indicating the stability of the mounting accuracy when the component is mounted on one production target board by summing the multiplication values;
For each line, when the production target board is changed, it is a setup ease value indicating the ease of work that occurs with the change of the production target board with respect to the component mounting machine constituting the line, and the work is easy With reference to the setup ease data indicating the setup ease value indicating a relatively small value, the number of parts that need to be taught and the setup among the parts mounted on one production target board for each of the plurality of lines. A setup value that calculates the multiplication value with the ease value as a setup ease value that indicates the ease of work that occurs with the change of the production target board for the component mounters that make up the line when the production target board is changed. An ease value calculation step;
For each line, refer to weight table data in which a weight having a smaller value for older lines is shown, and for each of the plurality of lines, the power consumption calculated in the power consumption calculation step and the power consumption A weighted power consumption calculating step for calculating a product of weights as a weighted power consumption;
A weight that refers to the weight table data and calculates, for each of the plurality of lines, a product of the mounting accuracy stability calculated in the mounting accuracy stability calculation step and the weight as a weighted mounting accuracy stability. Mounting accuracy stability calculation step with
A weight that refers to the weight table data and calculates, for each of the plurality of lines, a product of the setup ease value calculated in the setup ease value calculation step and the weight as a weighted setup ease value. A stepped-up value calculation step,
A first sum calculating step for calculating a sum of the weighted power consumption, the weighted mounting accuracy stability, and the weighted setup ease value for each of the plurality of lines;
Causing the computer to execute a first selection step of selecting a line having a minimum sum calculated in the first sum calculation step among the plurality of lines.
A program characterized by that.

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