JP2008218970A - Method of arranging feeder of part-mounting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve optimization of efficiency of feeder arrangement, when newly writing a production program for mounting parts on a substrate. <P>SOLUTION: When feeders are arranged on a part mounting device for sequentially loading parts on a positioned substrate, where the parts are concurrently suctioned from the feeders by a plurality of suction heads placed at a predetermined spacing on a head unit, feeder arrangement information is registered in a database, where the feeder arrangement information includes feeder arrangement optimized for each part capable of being concurrently suctioned. When a production program is newly written, combinations of parts capable of being concurrently suctioned are extracted from all parts scheduled to be loaded, a feeder arrangement identical to or similar to the combination of extracted parts is searched and obtained in the database, and an optimized feeder arrangement is prepared by using the obtained feeder arrangement. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a feeder arrangement method for a component mounting apparatus, and more particularly to a feeder arrangement method for a component mounting apparatus that is suitable for application when electronic components are simultaneously picked up from a suction position of a plurality of feeders and mounted on a substrate.

  In a component mounting device (mounter) that mounts (mounts) electronic components on a wiring board, in order to increase the mounting efficiency of the components, multiple components are picked up simultaneously by a plurality of suction heads mounted on the head unit, and then mounted on the substrate. It is carried out. In this case, it is important to optimally arrange the feeders (component supply devices) that supply the components so that the target components can be simultaneously sucked.

  For example, the optimization of such feeder arrangement is described in Patent Document 1, for each component type mounted on a substrate, from the number of each component and the number of feeders supplying each component, the number of mounting points that one feeder is responsible for. Obtain feeders with the same or approximate number of mounting points, organize feeder combinations consisting of a number of pairs corresponding to the number of suction heads, and determine the mounting points on the board of all the parts included in the combined feeder By obtaining a mounting peak point corresponding to the average position and assigning the combined feeder based on the mounting peak point, each component supplied from the combined feeder is simultaneously sucked by a plurality of suction heads on the substrate. In this method, feeders are arranged so as to be sequentially mounted (mounted).

  This optimization technique will be specifically described.

  FIGS. 5 and 6 show a head unit 10 equipped with a plurality (three in this example) of suction heads 10a to 10c so as to illustrate the entire structure of a mounter for mounting electronic components (chips) on a circuit board. The position is mounted on the XY unit 11 whose position can be positioned in the two-dimensional directions of X and Y. The XY unit 11 has an X axis 11a and a Y axis 11b, and positions the head unit 10 by a driving mechanism (not shown).

  Each of the suction heads 10a to 10c has a nozzle that sucks an electronic component to be mounted on the circuit board 12 at each tip, and this nozzle is rotated and moved up and down by a drive mechanism (not shown), and the position at the time of suction Or the posture is adjusted. The head unit 10 sucks and takes out electronic components supplied from a plurality of feeders 20 disposed on both sides of the circuit board 12, and is moved by the XY unit 11 to a mounting position on the circuit board on which the electronic components are mounted. Implemented in that position. Thereafter, the head unit 10 moves to a predetermined feeder position, similarly sucks the next electronic component, and sequentially mounts it on the circuit board.

  As shown in the enlarged view of the tip portion in FIG. 6, one feeder 20 stores the same type of electronic component 21 in a carrier tape and sequentially supplies it to the suction position. Each feeder is detachable and can be mounted at a predetermined position by the positioning member 22.

  Usually, in order to improve the mounting efficiency, the head unit 10 is mounted with a plurality (three in this case) of suction heads as described above, and after the electronic components are simultaneously suctioned by the plurality of suction heads, I try to move it. Since each feeder 20 is disposed on both sides of the path through which the substrate is conveyed, in order to mount a large number of components on the substrate efficiently and in a short time, the number of mounting points of each electronic component and the number of feeders It is important to install the feeder in consideration of the mounting position and the like.

  Therefore, the feeder arrangement is optimized according to the flowchart shown in FIG. 7, and the feeder arrangement is set in a production program for controlling the movement of the mounter when producing the mounting board.

  First, in step 101, the number of mounting points is obtained for each component type for all electronic components to be mounted on the board from the production program, divided by the number of feeders that supply the corresponding electronic components, and the number of mounting points that one feeder is responsible for. calculate. For example, in the case of supplying electronic components A to I as shown in FIG. 8 using the feeders corresponding to the number of components shown, 10 electronic components A are supplied using two feeders. Therefore, the number of mounting points that one feeder handles is five. Similarly, when calculation is performed for electronic components B to I, the results shown in the table are obtained.

  Next, in step 102, all the feeders that can be simultaneously sucked are extracted. This corresponds to selecting a feeder having the same or approximate number of mounting points determined in step 101. For example, as illustrated in FIG. 9, the number of mounting points is 5 because two electronic components A are supplied (No 1 and No 2), one electronic component B is supplied, and three electronic components D are supplied ( Since the feeders are No. 1 to No. 3), feeders having the same number of mounting points are selected and extracted.

  Subsequently, as shown in step 103, a combination is knitted between the simultaneously suckable feeders having the same or similar number of mounting points per feeder determined in step 101. For example, as shown in FIG. 10, the feeder for A (No. 1 and No. 2) and the feeder for B are both mounted points and can be sucked simultaneously by three suction heads. Form.

  Similarly, the second combination is created by the D feeder (No1 to No3), and the third combination is created by the C feeder (No1, No2) and the E feeder. In this example, the number of mounting points of the feeders of each combination is the same, but not all of the mounting points are the same, and there are cases where the combinations are similar. In this way, feeders having the same or approximate number of mounting points are extracted, and a combination of feeders composed of a number of pairs corresponding to the number of suction heads is knitted.

Next, as shown in step 104, a mounting peak point P corresponding to the average position of the mounting points on the substrate of all electronic components included in the combined feeder is obtained. This mounting peak point P is, for example, the mounting point of all electronic parts supplied from the first combination feeder A1 (x1, y1).
If it is Bn (xn, yn), as shown in the image of FIG. 11 (A), these averages xp = (x1 +... + Xn) / n
yp = (y1 + ...... + yn) / n
Is obtained.

  In this case, for an electronic component supplied from a feeder that cannot be sucked simultaneously, a mounting peak point is obtained for the mounting position of the electronic component supplied from the corresponding feeder.

  Subsequently, in step 105, the feeder combinations related to the position closest to the mounting peak point of the combination are arranged in descending order of mounting points (from the first combination in the example of FIG. 10). For example, regarding the first combination, when the feeder is mounted at the suction position as shown in FIG. 11B, the center A feeder 20a ′ is disposed so as to have a positional relationship close to the mounting peak point P1, The remaining A feeder 20a and B feeder 20b are disposed on both sides thereof. The distance between the feeders corresponds to the suction positions of the suction heads 10a to 10c of the head unit 10 so that the parts can be sucked simultaneously. Similarly, the D feeders 20d to 20d ″ constituting the second combination are arranged based on the mounting peak point P2 as shown in FIG.

  Next, at step 106, defragmentation of the attachment area of the feeder is performed. As shown in FIG. 11 (C), a gap (space) is generated between adjacent feeders as shown in FIG. . Therefore, defragmentation is performed to close the space, and as shown in FIG. 12, for example, the feeders 20a, 20a ′ and 20b constituting the first combination are respectively moved toward the center of the mounter, and the feeders of the second combination 20d to 20d ". By this, the space between the feeders generated when the combination of the simultaneous adsorption feeders is continuously assigned to the place close to the mounting peak point is not defragmented (FIG. 11C). , X1 becomes X2 after defragmentation (FIG. 12), and a large space can be secured, so that more space can be obtained for mounting the feeder.

  As described above in detail, in the conventional feeder placement optimization process, feeders are assigned and combined based on the mounting peak point corresponding to the average position of all mounting points on the board for each component to be simultaneously picked up, and then combined. Each of the components supplied from the feeder (hereinafter also referred to as feeder set) is suctioned simultaneously by a plurality of suction heads, and then moved onto the substrate so that the feeder can be securely arranged so that it can be sequentially mounted.

  Therefore, according to this optimization process, it is possible to reliably set the feeder to the optimum arrangement without depending on a skilled operator, and to mount a large number of different parts on the board efficiently and in a short time. An effect is obtained.

JP-A-7-326885

  However, in the conventional feeder layout optimization processing method as described above, when a production plan is made, the process of rearranging the feeder to the optimal layout based on newly created data for each occasion Therefore, there is a problem that the efficiency of the optimization process is poor.

  In addition, each time the feeder is rearranged, the suction coordinates are recalculated for the suction position of each feeder. Therefore, when starting production, the head unit is actually moved to find the calculated coordinates and the actual coordinates on the machine. There is also a problem that it is necessary to teach the suction coordinates to correct the deviation each time.

  The present invention has been made to solve the above-mentioned conventional problems, and when creating a production program for producing a mounting board, it is possible to improve the efficiency of optimization of feeder arrangement and start production. It is an object of the present invention to provide a feeder placement method for a component mounting apparatus that can omit the teaching work of suction coordinates that is sometimes performed.

  According to a first aspect of the present invention, there is provided a component in which a feeder is disposed in a component mounting apparatus that sequentially mounts a component that is simultaneously sucked from a feeder by a plurality of suction heads mounted on the head unit at a predetermined interval on a positioned substrate. In the feeder placement method of the mounting device, feeder placement information including optimized feeder placement for each part that can be picked up at the same time is registered in the database. A combination of suckable parts is extracted, and a feeder arrangement that is the same as or similar to the extracted part combination is obtained by searching the database, and an optimized feeder arrangement is obtained using the obtained feeder arrangement. The above-mentioned problem is solved by creating the information.

  In the present invention, the feeder arrangement information may include suction coordinates taught for the suction position of each feeder.

  In the present invention, the database is registered as feeder arrangement information, the feeder position close to the mounting peak point corresponding to the average position of the mounting points on the board, the name of parts to be simultaneously picked up, and the number of feeders. You may make it search as a keyword.

  In the present invention, a permanent feeder may be included in the optimized feeder position.

  In the present invention, the newly created feeder arrangement may be displayed in contrast to the feeder arrangement registered in the database used for the creation.

  According to a sixth aspect of the present invention, there is provided a component mounting in which a feeder is disposed on a component mounting apparatus that sequentially mounts a component, which is simultaneously sucked from a feeder by a plurality of suction heads mounted on the head unit at predetermined intervals, on a positioned substrate In the feeder placement method of the equipment, feeder placement information including feeder placement optimized for each part that can be picked up at the same time is registered in the database, and when creating a new production program, it is picked up simultaneously from all the parts to be mounted. Extract possible component combinations, search the database to obtain the same or approximate feeder arrangement as the extracted component combination, and create an optimized feeder arrangement using the obtained feeder arrangement In doing so, the problem can be solved in the same manner by providing support information for supporting the operation of searching the database. Those were.

  In the present invention, a keyword for searching feeder arrangement information may be included in the support information, and the support information may be provided by displaying a guidance on a method for inputting the keyword.

  In the present invention, the keyword may be a feeder position close to a mounting peak point corresponding to an average position of mounting points on a substrate, a part name to be picked simultaneously, and the number of feeders.

  According to the first aspect of the present invention, when creating a new production program, it is possible to search a database in which optimized feeder arrangements with proven results are registered in advance and use the information. It is possible to easily and quickly create a production program in which an optimized feeder layout is set, and when the suction coordinates for which the teaching position has been completed are registered, the operation is omitted. This also makes it possible to improve the efficiency of feeder arrangement optimization.

  According to the sixth aspect of the present invention, even a person unfamiliar with the operation can search easily when searching the database.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows an overview of a feeder set DB 10 applied to the feeder arrangement method of the first embodiment according to the present invention, and a database control system for executing data search and data registration for the feeder set DB 10.

  In the feeder set DB 10, it is possible to search and register data of feeder arrangement (feeder set) optimized via the access unit 12, and the access unit 12 includes a feeder set editing unit 14, suction data. A creation unit 16 and a permanent feeder creation unit 18 are connected to the feeder set DB 10 in a state where data can be referred to and registered, respectively, and an optimization unit 20, a feeder set search unit 22, a feeder set display unit Similarly, 24 is connected so that data can be referred to.

  The access unit 12 that controls access to the feeder set DB 10 can acquire, search, and register feeder arrangement information including optimized feeder arrangement and adsorption coordinates from another control unit such as the adsorption data creation unit 16. it can.

  Further, referring to the proven production program 26 created in steps 101 to 107 of the flowchart shown in FIG. 7 through the access unit 12, the optimum combination as shown in FIG. Feeder arrangement (adsorption data) is acquired and registered in the feeder set DB 10.

  FIG. 2 shows an example of a combination of optimized feeder arrangements composed of suction positions corresponding to the registered component types and corresponding suction coordinates. This combination of feeder arrangements includes a permanent feeder for supplying components usually mounted on a general board.

  In this embodiment, feeder placement information including optimized feeder placement for each part that can be picked up at the same time is registered in the database, and when a new production program is created, it is possible to pick up from all the parts that are to be mounted at the same time. A combination of parts, and a feeder arrangement that is the same as or similar to the extracted part combination is obtained by searching the database, and an optimized feeder arrangement is created using the obtained feeder arrangement. .

  Hereinafter, a case where a production program is newly created will be described with reference to the flowchart of FIG.

  First, when optimizing the feeder arrangement, the number of mounting points that the feeder is responsible for is calculated (Step 1), the feeders that can be picked up simultaneously are extracted (Step 2), and the combinations of feeders that can be picked up simultaneously (Feeder set) (Step 3) A mounting peak point is calculated for each component type (Step 4). Steps 1 to 4 are substantially the same as steps 101 to 104 in the flowchart of FIG. Therefore, a specific description is omitted.

  Next, in step 5, the feeder position close to the mounting peak point calculated in step 4 is calculated, and the feeder set DB 10 is searched using the feeder position, the part name to be picked up, and the number of feeders used as keywords. (Step 5), the same or closest feeder set is acquired from the feeder set DB 10 (Step 6). Simultaneously with the acquisition of this feeder set, the suction coordinates of each registered feeder are acquired.

  Thereafter, if there is no unassigned feeder, the process is terminated, and if there is still a feeder, the arrangement of feeders that are not in the feeder set obtained from the feeder set DB 10 is arranged in the processes in and after step 8. Set.

  Specifically, in Steps 8 and 9, as in Steps 105 and 106, a combination of simultaneous suction is created for feeders that are not assigned, and the feeder attachment area is defragmented.

  Next, in Step S10, Steps 8 and 9 are repeated until all the combinations of simultaneous adsorption are arranged. If all the combinations are arranged, the feeder that occupies a large area in the arrangement that cannot be made the combination of simultaneous adsorption in Step S11. In step S12, the feeders are arranged in order from the largest feeder that occupies a large arrangement area at the shortest position of the mounting peak points of the parts of the feeder. If a space is generated between the feeders, defragmentation is performed in the same manner as in the case of the combination of feeders (step S13). Steps 12 and 13 are continued until all feeders have been placed (step 14).

  When performing the defragmentation described above, the combination of each feeder or a single feeder will deviate from its mounting peak point, resulting in a loss of mounting time. However, it is better to secure the feeder mounting area obtained by defragmentation. Since mounting efficiency is often improved, defragmentation is prioritized in this embodiment. However, defragmentation may not be performed when the efficiency is reduced depending on the number and type of components to be mounted.

  FIG. 4 shows a comparison between the feeder arrangement optimized as described above and an example of the feeder arrangement acquired from the feeder set DB 10 for creating the feeder arrangement.

  As shown in the figure, the feeder set display unit 24 clearly displays the feeder arrangement registered in the feeder set DB 10 and the feeder arrangement newly added by the optimization according to the present embodiment. It has come to be.

  According to the embodiment described above in detail, the following effects can be obtained.

(1) By accumulating the feeder layout determined by optimization in the database, it can be reused for setting a permanent feeder or creating another production program. Operability can be improved.

(2) When optimizing the feeder arrangement, the closest feeder arrangement set in the production program is searched from the feeder set DB 10 and set to the same part, and the feeder arrangement of only a different part is replaced to optimize the process. Time can be shortened.

(3) Feeder setup time can be reduced by visually distinguishing and displaying different positions in the feeder arrangement after optimization and the feeder set used.

(4) By using suction coordinates with production results, it is possible to omit re-teaching before the start of production, so that the setup time of the feeder can be further shortened.

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

  In the present embodiment, the support for supporting the operation when searching the feeder set DB (database) in step 5 of the feeder arrangement optimizing process according to the first embodiment described in accordance with the flowchart shown in FIG. Corresponds to information provided.

  Specifically, support information is provided by displaying a guidance on a keyword input method for retrieving feeder arrangement information.

  As in the first embodiment, the keywords used here include a feeder position close to the mounting peak point corresponding to the average position of the mounting points on the board, the names of parts to be picked up simultaneously, and the number of feeders.

  FIG. 13 shows a selection screen for selecting an operation to be displayed for guidance. Here, as shown in the figure, an item “search for feeder arrangement information” is selected.

  Next, when the “next” button is pressed (clicked) on the selection screen shown in FIG. 14, the screen changes to the guidance screen shown in FIG.

  Here, the input of “feeder position close to the mounting peak point”, which is one of the feeder arrangement information search conditions, is prompted as the first keyword, and “average position of mounting points on the board” is provided below as support information. Please specify a feeder position close to "."

  When the input of the first keyword is completed, pressing the “Next” button changes to a guidance screen that prompts the input of the second keyword, for example, “part name to be picked up at the same time”. Enter by referring to the support information described.

  When all the keywords have been input in this manner, the screen returns to the selection screen of FIG. 13 and the item “obtain feeder arrangement information” at the bottom is selected, and the corresponding information is displayed from the feeder set DB 10 according to the displayed support information. Get feeder placement information.

  By the way, when searching the feeder arrangement information, if the items for setting the search information and the like are complicated, the efficiency of creating the desired production program data is inevitably lowered.

  However, according to the present embodiment described above in detail, it is possible to shorten the production time of production program data using the feeder set DB 10 by inputting the search conditions according to the guidance display, thereby improving the work efficiency. It becomes possible. In addition, even an operator who is not familiar with the operation can easily create optimized production program data using the feeder set DB 10.

  In the selection screen of FIG. 13, by selecting the second item “Create feeder arrangement information”, guidance, display, registration, and creation procedures for feeder arrangement information, suction data, and permanent feeder are displayed. It is also possible to prompt each operation.

  By using this guidance function, it is possible to newly create the feeder arrangement combination data corresponding to FIG. 2, and the created new data can be stored in the feeder set DB 10.

The block diagram which shows the outline | summary of the database applied to 1st Embodiment which concerns on this invention, and its search control system. Chart showing data image of optimized feeder arrangement registered in database The flowchart which shows the front | former stage of the process sequence of the optimization by this embodiment The flowchart which shows the latter part of the process sequence of the optimization by this embodiment Chart showing the image of feeder arrangement optimized according to the present embodiment in comparison with the data retrieved from the database for its creation The perspective view which shows the appearance of the mounter used for explanation of optimization of feeder arrangement Top view of the mounter from above The flowchart which shows the processing procedure of the optimization of the conventional feeder arrangement | positioning Chart explaining the results of finding the number of mounting points that one feeder handles Chart showing the results of extracting feeders with the same or similar number of mounted points Chart showing the results of knitting feeder combinations consisting of pairs corresponding to the number of suction heads Explanatory drawing which shows the arrangement method of the combination of the feeder applied to simultaneous adsorption Explanatory drawing which shows the arrangement | positioning of the feeder after the optimization which performed the defragmentation Explanatory drawing which shows the selection screen of the guidance display applied to 2nd Embodiment which concerns on this invention Explanatory drawing showing an example of a keyword input guidance screen

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Head unit 10a-10c ... Adsorption head 12 ... Circuit board 20 ... Feeder

Claims (8)

In the feeder placement method of the component mounting apparatus, the feeder is placed on the component mounting apparatus that sequentially mounts the components that are simultaneously sucked from the feeder by the plurality of suction heads mounted on the head unit at predetermined intervals.
Register feeder placement information including optimized feeder placement for each part that can be picked up simultaneously in the database,
When creating a new production program, extract the combination of parts that can be picked up simultaneously from all the parts to be mounted,
The feeder arrangement that is the same as or approximate to the extracted component combination is obtained by searching the database,
A feeder placement method for a component mounting apparatus, wherein an optimized feeder placement is created using the obtained feeder placement.   2. The feeder placement method for a component mounting apparatus according to claim 1, wherein the feeder placement information includes a suction coordinate taught for a suction position of each feeder.   Searching the database using as keywords the feeder position near the mounting peak point corresponding to the average position of the mounting points on the substrate, the names of parts to be picked up simultaneously, and the number of feeders registered as feeder arrangement information The feeder placement method for a component mounting apparatus according to claim 1, wherein:   2. The feeder placement method for a component mounting apparatus according to claim 1, wherein the optimized feeder placement includes a permanent feeder placement.   2. The feeder placement method for a component mounting apparatus according to claim 1, wherein the newly created feeder placement is displayed in comparison with the feeder placement registered in the database used for creation. In the feeder placement method of the component mounting apparatus, the feeder is placed on the component mounting apparatus that sequentially mounts the components that are simultaneously sucked from the feeder by the plurality of suction heads mounted on the head unit at predetermined intervals.
Register feeder placement information including optimized feeder placement for each part that can be picked up simultaneously in the database,
When creating a new production program, extract the combination of parts that can be picked up simultaneously from all the parts to be mounted,
The feeder arrangement that is the same as or approximate to the extracted component combination is obtained by searching the database,
In creating an optimized feeder layout using the obtained feeder layout,
A feeder placement method for a component mounting apparatus, characterized by providing support information for supporting an operation of searching the database.   7. The feeder for a component mounting apparatus according to claim 6, wherein the support information includes a keyword for searching for feeder arrangement information, and provides the support information by displaying a guidance on a method for inputting the keyword. Placement method.   8. The component mounting apparatus according to claim 7, wherein the keyword is a feeder position close to a mounting peak point corresponding to an average position of mounting points on a board, a component name to be picked simultaneously, and the number of feeders. Feeder placement method.

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