JP2012064964A - Component mounting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce operations by an operator when a plurality of types of mounting boards are produced with a component mounting machine.SOLUTION: A component mounting system includes a component mounting machine which divides a plurality of production programs into executable clusters without performing a process changeover of a feeder, and sequentially executes the production programs per cluster, thereby mounting components supplied from the feeder on the board positioned at a predetermined position. The component mounting system includes means by which, when there are a plurality of clusters, scheduled whole production termination time is calculated by calculating required time to mount the components by all the production programs included in the individual clusters; acquiring required time for the process changeover executed between the clusters; and summing requiring time to mount the components in all the clusters and required time for the process changeover between all the clusters.

Description

  The present invention relates to a component mounting system, and more particularly to a component mounting system that is suitable for application when a component is mounted on a substrate to produce a mounted substrate.

  In general, a component mounting machine (mounter) is used to suck an electronic component supplied from a feeder with a suction head, and the suction head is moved above a substrate at a predetermined position to mount the suction component on the substrate. Is produced (hereinafter also simply referred to as producing a substrate). In this board production (component mounting), production is performed for each type of board, and a production program consisting of data relating to the mounting position (coordinates), type of mounted parts, etc., created for each target board is used. Is called.

  Such a component mounter is managed by a host computer constituting the component mount system. In this component mount system, a production program corresponding to the board type is downloaded from each host mounter to the component mounter. A predetermined number of substrates are produced.

  When switching to a different type of board for board production by such a component mounting system, the parts to be mounted differ for each type of board (production program), so the type of feeder (part supply device) that supplies these parts Also need to be changed. In this case, for example, a setup change work such as feeder replacement or rearrangement as described in Patent Document 1 is required.

  In the setup change at the time of board production, the operator performs the work for the side of the production line while looking at the feeder setup instruction and confirming the feeder (part) that needs the setup change.

JP 2005-223888 A

  However, in the conventional component mounting system, there is a problem in that it is not possible to make a subsequent work plan because it is not possible to know the scheduled total production end time until the production by all scheduled production programs is completed.

  There was also a request to improve the time required for the changeover as much as possible.

  The present invention has been made to solve the above-mentioned conventional problems, and when producing a plurality of types of mounting boards by a component mounting machine, the entire production until the production by all the planned production programs is completed. The first problem is to be able to provide the operator with the scheduled end time.

  Furthermore, a second object of the present invention is to provide the operator with information for shortening the time required for the setup change and improving the setup change work.

  According to the first aspect of the present invention, a plurality of production programs are divided into clusters that can be executed without changing the feeder setup, and the production program is sequentially executed in units of clusters, and parts supplied from the feeder are determined in advance. When there are multiple clusters in a component mounting system equipped with a component mounter that is mounted on a board positioned at a position, the time required for component mounting by all production programs included in each cluster is calculated, and between each cluster The time required for the setup change to be performed in (1) was obtained, and the means for calculating the total production end time was calculated by summing the time required for component installation in all clusters and the time required for setup change between all clusters. Thus, the first problem is solved.

  In the present invention, the time required for the setup change may be acquired as the setup change actual time stored for the setup change pattern having the same feeder arrangement.

  In the present invention, the time required for the setup change may be set as a setup change calculation time obtained by adding the reference time set for each feeder for the target feeder.

  The invention according to claim 4 divides a plurality of production programs into clusters that can be executed without changing the feeder setup, and sequentially executes the production program in units of clusters so that parts supplied from the feeder are predetermined. In a component mounting system equipped with a component mounting machine mounted on a board positioned at a position, the time required for the setup change performed between the clusters, the actual time stored for the setup change pattern with the same feeder arrangement, and The second time is provided by means for obtaining the changeover calculation time obtained by adding the reference time set for each feeder for the target feeder, and calculating the difference between the two as the improvement possible time of the changeover work. This is a solution to this problem.

  According to the first aspect of the present invention, the total time required for component mounting in all clusters and the time required for setup change between all clusters can be calculated to calculate the total production end scheduled time. It becomes possible to make a work plan.

  According to the invention of claim 4, since the time required for the setup change is obtained as a calculation time obtained by adding the stored actual time and the reference time, the difference between the two is obtained as an improvement guideline for production efficiency. It becomes possible to provide.

The top view which shows the outline | summary of the component mounting system of the reference example used for description of embodiment which concerns on this invention Block diagram showing an overview including the control system of the component mounter that constitutes the component mounting system of this reference example Block diagram showing an overview of the host computer that manages the component mounters that make up the component mounting system of this reference example Explanatory drawing which shows an example of the display image of the feeder which requires setup change Explanatory drawing showing an example of the display image of the scheduled production completion time Flow chart showing the operation of this reference example The block diagram which shows the outline | summary of the component mounting system of 1st Embodiment which concerns on this invention. Explanatory diagram showing how to obtain basic data Explanatory drawing showing an example of calculating the estimated end time The flowchart which shows the process sequence in 2nd Embodiment which concerns on this invention.

  First, a reference example for explaining an embodiment according to the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows an outline of a component mounting system in which two component mounting machines (mounters) 1 and 1 ′ are controlled by a control device 6 (host computer) to produce a board.

  The feeder bank 3 of the component mounter 1 has five feeders A, B, C, D, and E at feeder positions 3A, 3B, 3C, 3D, and 3E, and the feeder bank 3 'has five feeders. a, b, c, d, and e are attached to feeder positions 3a, 3b, 3c, 3d, and 3e, respectively.

  The feeder bank 7 of the component mounting machine 1 ′ has five feeders F, G, H, J, and K at feeder positions 7F, 7G, 7H, 7J, and 7K, and five at the feeder bank 7 ′. Feeders f, g, h, j, and k are attached to feeder positions 7f, 7g, 7h, 7j, and 7k, respectively.

  The feeders of the respective banks 3, 3 ', 7, 7' accommodate various components to be mounted on the substrates 2, 5 that are transported along the transport path 4 in the direction of the arrow. The same type of parts are stored in one feeder, and if the part types are different, they are stored in different feeders. Therefore, as many feeders as the number of parts types are prepared.

  FIG. 2 illustrates a configuration including a control system of the component mounter 1, and the component mounter 1 'has a similar configuration. The component mounter 1 includes a control unit 11 including a CPU 11a that controls the entire component mounting, a ROM 11c that stores various control programs and data, and a RAM 11b that stores control data and processing data and provides a work area. Yes.

  The component mounter 1 is provided with a data transmission / reception unit 16 capable of transmitting / receiving data to / from the host computer 6. Production program data transmitted from the host computer 6 is transmitted to the data transmission / reception unit 16. And is stored in the data storage unit 15. The control unit 11 drives the X / Y drive unit and the other drive unit 12 according to the production program data transmitted from the host computer 6 and the data input via the data input unit 13, so that the suction head (not shown) ) Is moved to the feeder, where the electronic components supplied from the feeder are sucked by the suction head. The sucked parts are recognized by the image recognition unit 14 equipped with a camera and the position of the picked-up parts is corrected. Then, the picked-up parts are moved to predetermined positions on the boards 2 and 5 that are transported along the transport path 4 and moved onto the board. To be implemented.

  As illustrated in FIG. 3, the host computer 6 includes a control unit 61, a data output unit 64, a data input unit 65, a data storage unit 66, and a data transmission / reception unit 67. The control unit 61 includes a CPU 61a, a RAM 61b, and a ROM 61c, and data indicating the state of the host computer 6 is output from the data output unit 64. Further, production program data and the like are input from the data input unit 65 via an input means such as a keyboard, and data from the component mounter 1 is received from the data transmission / reception unit 67, and these data are stored in the data storage unit 66. It can be stored. The RAM 61b, ROM 61c, or data storage unit 66 stores an operating system program (OS), a program for controlling the component mounting system of this reference example, and various data.

  The production program data is various data for producing a board on the component mounting machines 1 to 1 ′. The data related to the board, the data related to the mounting position, the data related to the part (for example, the height and width dimensions), and the data related to the suction position. When producing a plurality of types of substrates, a production program (data) is created for each substrate via the data input unit 65.

  The production program is created by optimizing in consideration of the mounting position of the feeder for storing and supplying the component and the mounting order of the component on the board so that the tact time of component mounting is shortened. Also, when producing multiple types of substrates, a predetermined number of production programs can be clustered as if they were one program (clustered) so that multiple production programs can be efficiently implemented in the shortest time. In the production program, the production program data is divided into clusters and edited so that the rearrangement or replacement of feeders is not necessary even if the type of substrate changes.

  In the component mounting system of the present reference example configured by the above component mounters 1, 1 ′ and the host computer 6 that manages them, as described above, a plurality of production programs can be executed without changing the feeder setup. The product is divided into executable clusters, and a production program is sequentially executed for each cluster, and components supplied from the feeder are mounted on a substrate positioned at a predetermined position to produce a mounting substrate.

  In addition, the component mounting system of this reference example includes a head program determination unit that determines whether or not a production program to be executed next is the head of a cluster, and a production program that is determined to be the head program by the determination unit, Production starting means for executing confirmation of completion of setup change, and automatic production means for causing the determination program to determine that the production program is not the first program is downloaded to the component mounter and automatically executed. I have. Each of these means is realized by software in the host computer 6 except that the production start means includes a start button (not shown) installed in each component mounter 1, 1 '.

  In addition, in this reference example, as shown in the image of FIG. 4, there is provided a means for comparing the component type used in the previous cluster with the component type used in the next cluster and displaying a feeder to be changed. In addition, as shown in the image of FIG. 5, there is provided means for calculating the time required for mounting parts by all the production programs included in one cluster and displaying the scheduled production end time. Each of these means is also realized by software in the host computer 6, and the illustrated image is displayed on the screen as will be described in detail later.

  Next, the operation of this reference example will be described with reference to the flowchart of FIG.

  In this reference example, when a plurality of production programs are reserved, the production program function of the host computer 6 performs optimization on these production programs and clustering is performed (step 1). ). This clustering is described in, for example, Japanese Patent Application Laid-Open No. 2003-229696.

  Production programs classified into the same cluster by this clustering need not be replaced, and if the necessary feeders are set at the beginning, they can be produced as they are as long as no parts run out.

  When clustering is performed on the plurality of production programs reserved in step 1 and optimization for determining feeder placement so that the component mounting tact is minimized, the cluster-optimized production program Cluster data is created (step 2).

  When cluster data is created and production is started in this way, the host computer 6 determines whether or not the production program used for the next production is the first program in the cluster by the head program determination means. (Step 3). This determination is made based on the order set at the time of production planning.

  If it is determined that the program is the head program, the production program is downloaded to each of the component mounters 1, 1 ′ (step 4), and a dialog (not shown) is prepared in order to prepare necessary components (feeders) for this cluster. The display prompts to change the setup (step 5).

  After confirming that the setup change by the operator has been completed (step 6), the host computer 6 starts production in each of the component mounters 1, 1 '. That is, when the host computer 6 determines that the production program is at the head of the cluster, it is necessary for the operator to check whether the setup change has been completed. Therefore, the production start means starts production based on the operator's judgment in order to execute the production program on condition that the setup change is completed (terminated) (step 7). Specifically, in each of the component mounters 1, 1 ', the operator presses a start button (not shown) to start production.

  On the other hand, if it is determined in step 3 that the program is not the first program but the second and subsequent production programs included in the same cluster, the automatic production means transfers the information from the host computer 6 to the component mounters 1, 1 ′. When the production program is downloaded (step 8), a production start command is automatically notified from the host computer 6 to each component mounting machine 1, 1 '(step 9). As described above, the production command is automatically transmitted by transmitting the start command together with the production program download.

  As described above, when production is started by an operator's manual start (step 7), parts replacement is not required in the same cluster after that, and when the same kind of board production is completed (step 10). ) And automatically within the same cluster (steps 11 and 3), the production program is downloaded from the host computer 6 in step 8, and the production start command is sent to the component mounters 1 and 1 ′ in step 9 And start production automatically. The above production operation is repeated for all clusters (step 12).

  By doing so, since the production program for the second and subsequent production programs can be automatically performed in the same cluster, the production efficiency can be greatly improved.

  Further, in this reference example, as shown in FIG. 4, the host computer 6 displays the target feeder relating to the component that needs to be changed on the screen while changing the color for each component mounter. It has become.

  This compares the previous cluster data and the next cluster data relating to the component type to be used, obtains a target feeder having a different component type, and visually displays it as a feeder (component) that needs to be changed. In the figure, the feeders (B, D, F) that need to be changed when moving from the feeder array of the previous cluster 1 to the feeder array of the next cluster 2 are displayed together with the feeder to be changed, for example, in red. The feeders (A, C, E) that are not changed are displayed in blue, for example.

  As described above, since the change contents at the time of the setup change are displayed on the host computer 6 by changing the color, when the operator performs the setup change in steps 5 and 6, the work man-hour is reduced and the production is performed. The efficiency can be improved, and further, mistakes in setup change work can be reduced.

  In addition, as shown in FIG. 5, the scheduled production end time in the same cluster can be output. This production end time simulates the production operation time per board in each component mounting machine 1, 1 ′ at the time of optimization start (production planning) when creating a cluster. It is possible to display by calculating by multiplying the number of corresponding substrates and adding up all the production programs in the same cluster. Accordingly, since it is not necessary for the operator to be involved in the production of one cluster until the production is completed, the operator's work man-hours can be reduced, and as shown in FIG. You can also know the expected time.

  According to the reference example described in detail above, the production program classified into the same cluster can automatically create a substrate even if the worker is not on the line except for the top program.

  In addition, since the top production program when switching to another cluster needs to be changed, after downloading the production program, a screen prompting the change is displayed without automatically producing the board. . On the screen, the parts of the target feeder corresponding to the parts that need to be changed on the screen of the host computer 6 are displayed by changing the color for each component mounter, so that the parts (feeders) that need to be changed are visualized. Therefore, it is possible to improve the work efficiency at the time of setup change and to prevent the occurrence of work mistakes.

  Furthermore, since the scheduled production end time is output and displayed in the same cluster, the time at which the setup change occurs is clarified.

  Next, a first embodiment according to the present invention will be described.

  FIG. 7 shows an outline of the component mounting system of the present embodiment, and five mounters 1 to 5 arranged in series are managed by a host computer (HLC).

  In the component mounting system of this embodiment, when there are a plurality of clusters, the time required for component mounting by all the production programs included in each cluster is calculated and the changeover (change) executed between the clusters is performed. The software implements a means for obtaining the required time, and calculating the total production end time by summing the time required for mounting parts in all clusters and the time required for setup change between all clusters.

  The time required for mounting the components in the cluster can be obtained in the same manner as the time until the end of production in the cluster displayed in FIG.

  The time required for setup change between clusters can be obtained by searching for setup change patterns with the same feeder arrangement and extracting the actual times stored for the patterns if there is past result data.

  In this component mounting system, as past performance data, for example, as shown in FIG. 4, the feeder arrangement that is the target of setup change is used as the past setup change pattern, for example, the arrangement location and feeder name from the left end. Are expressed as (2E, 4A, 6C...) And stored together with the actual required time.

  Therefore, the operator searches the stored data using the pattern as a key, and if there is the same setup change pattern, the operator can acquire the actual time as the setup change required time.

  On the other hand, if the same changeover pattern does not exist as a result of the search, it can be calculated using the changeover reference time set for each feeder.

  In this embodiment, as shown as classification 1 to classification 10 in FIG. 8 (A), according to the packing form and size (width) of feeders such as tape, stick, bulk, holder, table, etc. The required reference time (in seconds) is set for each feeder (supply device). This reference time can be arbitrarily set by the operator based on experience and prediction.

  In addition, the setup change reference time is based on the time required for a specific feeder, and the time required for other feeders can be set as a ratio to the reference.

  FIG. 8B shows a case where the total setup time for one mounter (here, 900 seconds) is similarly classified into 1 to 10 at a set predetermined ratio.

  Therefore, in the present embodiment, the time required for the setup change can be acquired as an actual value, and can be set as a calculated value when there is no actual value.

  As described above in detail, according to this embodiment, as shown in FIG. 9 for the mounter shown in FIG. By calculating the production time by the program and calculating the time required for the setup change between clusters by actual data or calculation, the total production end time is estimated to be 14,100 seconds (the total of the table in FIG. 9 is calculated). Reference).

  Therefore, the operator can surely make a work plan after a series of productions composed of a plurality of clusters is completed.

  Next, a second embodiment according to the present invention will be described.

  In the present embodiment, in the component mounting system similar to that shown in FIG. 7, the time required for the setup change executed between the clusters is the actual setup change time stored for the setup change pattern with the same feeder arrangement, A means for obtaining the changeover calculation time obtained by adding the reference time set for each feeder for the target feeder, and calculating the difference between the two as the improvement possible time for the changeover work is also realized by software. Yes.

  This function (means) will be described with reference to the flowchart of FIG.

  When the cluster is switched and a setup change occurs (Y in Step 1), the setup data including the same feeder arrangement is searched for the actual data stored for various setup change patterns, and the corresponding setup change actual time ( (Hereinafter also referred to as a pattern search time) is acquired (step 2), and at the same time, a calculation time (setup change calculation time) calculated using the same basic time as in FIG. 8 for the same setup change pattern. Is acquired (step 3).

  Next, in step 2, a pattern search is performed to determine whether there is a corresponding pattern (step 4). If there is no corresponding pattern, a calculation time that is the sum of the reference times for each feeder is set as the initial setup change time. (Step 5).

  If there is a corresponding pattern in step 4, the pattern search time in step 2 is compared with the calculation time in step 3 (step 6). If the pattern search time is long, the calculation time is set as the first step change time. The pattern search time is set as the second step replacement time (steps 7 and 8).

  On the other hand, if the pattern search time is shorter in step 6, the pattern search time is set to the first step change time and the calculation time is set to the second step change time (steps 9 and 10).

  The difference between both setting times in steps 7 and 8 and the difference between both setting times in steps 9 and 10 are calculated as possible improvement times (step 11).

  According to the present embodiment described above, the actual changeover time is set with priority on the actual value.If there is a difference between the two, the operator has a problem in setting the reference time, or It can be used as an index (information) that suggests whether there is a possibility that the actual time can be shortened or an improvement.

  The number of component mounters constituting the component mount system is arbitrary, and the feeder may be installed only on one side of the component mounter.

DESCRIPTION OF SYMBOLS 1, 1 '... Component mounting machine 3, 7 ... Feeder bank 6 ... Control apparatus (host computer)
DESCRIPTION OF SYMBOLS 15 ... Data storage part 16 ... Data transmission / reception part 65 ... Data input part 66 ... Data storage part 67 ... Data transmission / reception part

Claims (4)

Divide multiple production programs into clusters that can be executed without changing the feeder setup, and execute the production program sequentially for each cluster to place the parts supplied from the feeder on the substrate positioned at a predetermined position. In a component mounting system equipped with a component mounting machine to be mounted,
If there are multiple clusters, calculate the time required for mounting parts by all production programs included in each cluster, and obtain the time required for setup change between each cluster.
A component mounting system comprising means for calculating a total production end scheduled time by summing up component mounting time in all clusters and setup change time between all clusters.   2. The component mounting system according to claim 1, wherein the time required for the setup change is acquired as a setup change actual time stored for a setup change pattern having the same feeder arrangement.   The component mounting system according to claim 1, wherein the time required for the setup change is acquired as a setup change calculation time obtained by adding a reference time set for each feeder for the target feeder. Divide multiple production programs into clusters that can be executed without changing the feeder setup, and execute the production program sequentially for each cluster to place the parts supplied from the feeder on the substrate positioned at a predetermined position. In a component mounting system equipped with a component mounting machine to be mounted,
The time required for setup change performed between clusters is the setup change calculation time obtained by adding the actual time saved for the setup change pattern with the same feeder arrangement and the reference time set for each feeder for the target feeder. As each get as
A component mounting system comprising means for calculating a difference between the two as an improvement possible time of the setup change work.

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