JP5555543B2 - Production system and production management method thereof - Google Patents

Description

  The present invention relates to a production system for mounting electronic components on a multi-sided board on which a plurality of circuits to be divided after mounting are formed by a line constituted by a plurality of electronic component mounting apparatuses, and a production management method thereof.

When an electronic component is mounted on a circuit board by an electronic component mounting device, the mounted electronic component mounting device, mounting time, component identifier of the mounted electronic component, electronic component reel identifier, etc. Conventionally, production management has been performed so that production history information (so-called traceability information) is stored in a database together with an identifier of a board on which mounting is performed, and can be traced later.
On the other hand, in recent years, in response to a demand for miniaturization of circuit boards, a plurality of miniaturized circuits are simultaneously formed on a single board, and a circuit board is produced by dividing each circuit after component mounting work. Substrates are increasingly being used.
In the case of such a multi-sided board, in order to manage the identifier for each circuit, it is necessary to read the identifiers of all the circuits on the board with the electronic component mounting apparatus.
However, when the above method is adopted when a line is constituted by a plurality of electronic component mounting apparatuses and all mounting points of one board to be mounted by each electronic component mounting apparatus are distributed and the mounting operation is performed, The electronic component mounting apparatus reads the circuit identifiers of all the circuits, which increases the reading time and lowers the work efficiency.

Therefore, conventionally, a circuit number is determined for each circuit of a multi-sided board, and the circuit identifier for each circuit is configured as an identifier partially including the board identifier of the multi-sided board, and the board identifier is not read at the time of mounting. A method has been devised in which only the substrate identifier and other production history information are recorded (for example, see Patent Document 1).
In this conventional method, when tracing, a board identifier is extracted from the circuit identifier, and all necessary production management information can be specified using the board identifier.

JP 2007-42934 A

However, the following two problems remain in the prior art.
The first problem is to record the correspondence between the part other than the board identifier included in the circuit identifier of the board and the circuit number of the circuit specified by the production program. Further, in some cases, it is necessary to keep a record of this correspondence for each substrate, and there is a problem that extra management man-hours are required.

  The second problem is that, as described above, in the prior art, only the board identifier is read without reading the circuit identifier at the time of mounting, and the circuit identifier determined based on the correspondence information between the board identifier and the circuit identifier is the production management information. Since it is used for identification, the electronic component mounting apparatus is erroneously written, for example, in the printed circuit identification code by the amount of the estimation judgment process based on the correspondence information, compared to the case where the circuit identifier of each circuit is actually read at the time of mounting. When the correspondence information is incorrect, there is a problem that the reliability of the information is lowered.

  An object of the present invention is to improve the reliability of history information while avoiding a decrease in work efficiency of the mounting work.

  According to the first aspect of the present invention, a line composed of a plurality of electronic component mounting apparatuses for mounting electronic components on a circuit on each divided substrate obtained by dividing a multi-sided board and production history information of the entire line are obtained. In the production system including the production management device, all the electronic component mounting devices on the line share the reading of the plurality of circuit identifiers on the multi-sided substrate so that some overlap occurs, and Each of the electronic component mounting apparatuses of the plurality of electronic component mounting apparatuses is configured such that when a group of circuits to be read of circuit identifiers are connected together with overlapping ones, the division is finally made into one group. Obtains production history information when the multi-sided board is mounted, and includes the information of each circuit identifier that has been read in the production history information. The physical device collects production history information acquired by each of the electronic component mounting apparatuses, and acquires production control information of the entire line including information on circuit identifiers of all circuits of the multi-sided board. .

  The invention according to claim 2 has the same configuration as that of the invention according to claim 1, and all of the electronic component mounting apparatuses on the line have the basic circuit as one of the circuits of the multi-sided substrate. The circuit identifier is read, and circuits other than the basic circuit are read by the respective electronic component mounting apparatuses in a shared manner.

  The invention according to claim 3 has the same configuration as that of the invention according to claim 2, and any circuit is used as the basic circuit of the multi-sided substrate, and each circuit other than the basic circuit of the multi-sided substrate is the electronic circuit. Each electronic component mounting apparatus reads each circuit identifier based on circuit identifier reading schedule information that determines which of the component mounting apparatuses performs reading.

  The invention described in claim 4 has the same configuration as that of the invention described in claim 3, and the circuit identifier reading schedule information reads all circuit identifiers of the multi-sided board for each electronic component mounting apparatus on the line. The number of individuals or the required time is averaged.

  The invention according to claim 5 has the same configuration as that of the invention according to claim 3, and a production program that defines which electronic component mounting apparatus is used to mount the electronic component mounted on the multi-sided substrate. The electronic component mounting apparatuses perform mounting work based on the above, and the mounting work and reading of all the circuit identifiers are summed up for each electronic component mounting apparatus by the production program and the circuit identifier reading schedule information. The feature is that the time required for the work is averaged.

  The invention described in claim 6 has the same configuration as that of the invention described in claim 1, and any one of the circuit identifiers of the circuits read by the electronic component device on the upstream side of the line is used as a basic circuit. The electronic component mounting apparatus on the downstream side reads the circuit identifier.

  The invention according to claim 7 has the same configuration as that of the invention according to any one of claims 1 to 6, and the circuit identifier is stored as a one-dimensional or two-dimensional display or data. Is provided on the multi-sided circuit board.

  The invention according to claim 8 acquires a line composed of a plurality of electronic component mounting apparatuses for mounting electronic components on a circuit on each divided substrate obtained by dividing a multi-sided board and production history information of the entire line. In the production management method of the production system comprising the production management device, all the electronic component mounting devices on the line share the reading of the plurality of circuit identifiers on the multi-sided board so that some overlap occurs. And the sharing of the circuit identifiers to be read by the circuit identifiers is performed by connecting the overlapping circuit groups to each other, and each of the plurality of electronic component mounting apparatuses The electronic component mounting apparatus acquires production history information at the time of mounting the multi-sided board, and information on each circuit identifier that has read the production history information. Production history information acquired by each of the electronic component mounting apparatuses is collected by the production management apparatus, and the production management information of the entire line including the circuit identifier information of all the circuits of the multi-sided board is acquired. It is characterized by that.

  The invention according to claim 9 has the same configuration as that of the invention according to claim 8, and any circuit on the multi-sided substrate is used as a basic circuit by all electronic component mounting apparatuses on the line. The circuit identifier is read, and for the circuits other than the basic circuit, the circuit identifier is read by sharing of each electronic component mounting apparatus.

  The invention according to claim 10 has the same configuration as that of the invention according to claim 9, and any circuit is used as the basic circuit of the multi-sided substrate, and each circuit other than the basic circuit of the multi-sided substrate is the electronic circuit. Each circuit identifier is read by each electronic component mounting apparatus based on circuit identifier reading schedule information that determines which of the component mounting apparatuses performs reading.

  The invention described in claim 11 has the same configuration as that of the invention described in claim 10, and reads all circuit identifiers of the multi-sided board for each electronic component mounting apparatus on the line by the circuit identifier reading schedule information. The number of individuals or the required time is averaged.

  The invention described in claim 12 has the same configuration as that of the invention described in claim 10, and a production program that defines which electronic component mounting apparatus mounts the electronic component mounted on the multi-sided substrate. The electronic component mounting apparatuses perform mounting work based on the above, and the mounting work and reading of all the circuit identifiers are summed up for each electronic component mounting apparatus by the production program and the circuit identifier reading schedule information. The feature is that the time required for the work is averaged.

  The invention described in claim 13 has the same configuration as that of the invention described in claim 8, and any one of the circuit identifiers of the circuits read by the electronic component device on the upstream side of the line is used as a basic circuit. The electronic component mounting apparatus on the downstream side reads the circuit identifier.

  The invention described in claim 14 has the same configuration as the invention described in any one of claims 8 to 13, and the circuit identifier is stored as a one-dimensional or two-dimensional display or data. Is provided on the multi-sided circuit board.

In the inventions of claims 1 and 8, all the electronic component mounting apparatuses on the line share the reading of the circuit identifier of the circuit with other electronic component mounting apparatuses so as to be partially duplicated. When a group of circuits to be read by the electronic component mounting apparatus is connected with another group where duplication occurs, the division is performed so as to be finally combined into one group.
With this sharing, it is possible to shorten the reading time of the circuit identifier and increase the efficiency of the mounting work as compared with the case where each electronic component mounting apparatus reads all circuit identifiers.
On the other hand, in the production history information by each electronic component mounting apparatus, not all circuit identifier read information is necessarily recorded due to sharing. However, the group of circuits to be read by each electronic component mounting apparatus always overlaps with any other group, and when overlapping ones are added together, one group, that is, all the circuits of the multi-chip board It is made to overlap so that. As a result, the circuit identifier groups of other production history information that cause duplication are read out and added to the group of one or more circuit identifiers included in the production history information of each electronic component mounting apparatus, and further added to the added group. It is possible to read all the production history information of the electronic component mounting equipment that has been mounted on the same multi-sided board by repeating the work of reading and adding the circuit identifier group of another production history information that causes duplication. is there.
Therefore, even if only a part of the circuit identifier is included in the production history information of one electronic component mounting apparatus, it is possible to read all the production history information of the electronic component mounting apparatus mounted on the same multi-sided board. All circuit identifiers can be obtained.
As a result, for example, when a defect or failure occurs later in any circuit and becomes the subject of a follow-up survey, if the circuit identifier of the circuit is found, all the production history information based on it can be grasped. It becomes possible.
Since all the circuit identifiers included in the production history information acquired by the production management device are actually obtained by reading the multi-chip board, for example, a circuit for each circuit for shortening the reading time. In the conventional management method in which the identifier is an identifier partially including the board identifier of the multi-sided board, the actual reading operation of all circuit identifiers is omitted, only the board identifier is read, and the board identifier is included in the history information. In comparison, it is possible to obtain high reliability as information.

  According to the second and ninth aspects of the present invention, since one basic circuit is defined and its circuit identifier is read by all the electronic component mounting apparatuses, if a piece of production history information including the circuit identifier of the basic circuit is read, one multiple circuit is read. All the production history information about the chamfered substrate can be read out, and the reading process can be performed more easily.

  According to the third and tenth aspects of the present invention, each electronic component mounting apparatus reads each circuit identifier based on the schedule information. Therefore, when each electronic component mounting apparatus reads the circuit identifier, any circuit identifier is read. Thus, it is possible to eliminate processing such as determination for specifying whether or not to read.

  According to the fourth and eleventh aspects of the invention, in the circuit identifier reading schedule information, the number of circuit identifiers read or the required time for each electronic component mounting apparatus is averaged. It becomes good.

  According to the fifth and twelfth aspects of the present invention, since the production program and the circuit identifier reading schedule information are used, the operation time required for summing the mounting work and the reading of all circuit identifiers for each electronic component mounting apparatus is averaged. Further, the time required for the mounting work is further uniformed, and the line balance is further improved.

  According to the sixth and thirteenth aspects of the present invention, the electronic component mounting apparatus on the downstream side includes the circuit identifier of one of the circuit identifiers of the circuits read by the electronic component apparatus on the upstream side of the line. Since the identifier is read, it is possible to easily form an overlapping state that is grouped into one group.

  According to the seventh and fourteenth aspects of the present invention, since the circuit identifier is provided on the multi-sided circuit board using a storage element that stores data as one-dimensional or two-dimensional display or data, the circuit identifier is more reliably stored in the production history. It can be recorded as information, and the reliability of production history information can be improved.

It is a block diagram of the production system in the line comprised by the some electronic component mounting apparatus which is embodiment of invention. It is a top view of a multi-sided substrate. It is a perspective view of an electronic component mounting apparatus. It is a block which shows the control system of a production system. It is explanatory drawing which illustrated the produced production program in the table format. FIGS. 6A and 6B show, in a tabular form, a state in which production history information is accumulated by the mounting operation of each electronic component mounting apparatus for a divided production program divided by two electronic component mounting apparatuses. FIG. It is explanatory drawing which illustrated the circuit identifier reading schedule in the table format. It is explanatory drawing which illustrated in a table format the circuit identifier reading schedule set to the reading order. It is explanatory drawing which shows the concept of a 1st distribution method, FIG. 9 (A), (B) shows each distribution state of two electronic component mounting apparatuses. It is explanatory drawing which shows the concept of the 2nd distribution method, and FIG. 10 (A), (B) shows each distribution state of two electronic component mounting apparatuses. It is explanatory drawing which illustrated the production history information with respect to the same board | substrate produced | generated by integration of the production history information sent from each electronic component mounting apparatus in table format. It is explanatory drawing which illustrated the production history information with respect to the same board | substrate produced | generated by integration of the production history information sent from each electronic component mounting apparatus in a table | surface form, and shows the state in which the undecided circuit identifier was decided. It is a flowchart which shows the process in the production management apparatus in the stage before the mounting operation | work in a line is started. It is the flowchart which showed the process which the production management apparatus and each electronic component mounting apparatus perform at the time of mounting in a line. It is a flowchart of the subroutine which shows the detail of the acquisition process of the production history information in each mounting point. It is a flowchart of the subroutine which shows the detail of the process which integrates the production history information sent from each electronic component mounting apparatus, and produces | generates the production history information with respect to the same board | substrate. FIG. 17A is an explanatory diagram conceptually showing a sharing method for determining basic circuit identifiers, and FIG. 17B is an explanatory diagram conceptually showing a sharing method in which groups do not overlap with a fixed circuit identifier. It is.

(Outline of Embodiment of the Invention)
Hereinafter, embodiments of the present invention will be described in detail. FIG. 1 is a block diagram of a production system 100 in a line constituted by a plurality of electronic component mounting apparatuses 10 according to an embodiment of the invention. FIG. 2 is a plan view of a multi-sided board B to be mounted by the line.
As shown in the figure, a production system 100 includes a line composed of a plurality of electronic component mounting apparatuses 10 that mount electronic components on a multi-sided board B composed of a plurality of circuits, and a production management apparatus 20 that performs production management of the lines. And a storage device 21 for accumulating production management information.

(Multi-sided board)
As shown in FIG. 2, the multi-sided substrate B is formed by arranging a plurality of (for example, four) circuits K1 to K4 on the same plane. The circuits K1 to K4 are provided with circuit identifiers ID1 to ID4, respectively. In addition, points P1 to P4 in the circuits K1 to K4 in the figure indicate mounting points of electronic components, respectively. Each circuit K1-K4 comprises the same circuit.
In the following description, the circuits K1 to K4 are simply referred to as a circuit K when it is not necessary to distinguish between them. The same applies to the circuit identifiers ID1 to ID4.

The circuit number of each circuit K is fixed by the arrangement on the multi-sided board B. For example, the circuit number of the upper left circuit K1 is “1”, the upper right circuit K2 is “2”, the lower left circuit K3 is “3”, and the lower right circuit K4 is “4”. As this circuit number, the same number is used for the same type of multi-sided substrate B.
On the other hand, each circuit identifier ID is composed of a numeric string or code string of a unique number or code combination unique to the circuit K, and each circuit on the substrate B is displayed by displaying a bar code or a two-dimensional code indicating the numeric string or code string. It is given to the circuit position. That is, the circuit identifier ID is assigned with different IDs even for the circuits having the same circuit number of the same type of multi-sided board B, and there is no circuit with the same ID. It is configured.
As described above, the method of attaching the circuit identifier ID to the multi-sided board B is not limited to the case of attaching a two-dimensional display capable of specifying the ID, and digital data such as RFID can be stored and read from the outside. The circuit identifier may be stored in a possible storage means and attached to each circuit position on the substrate B.
When using a bar code or two-dimensional code display as a circuit identifier, the electronic component mounting apparatus 10 is equipped with an imaging unit such as a camera for reading, and when using a storage unit such as an RFID, Reading is performed by mounting a dedicated tag reader on the electronic component mounting apparatus 10.

  Although not shown, the multi-sided substrate B has a positioning mark indicating a reference position for positioning the electronic component at the mounting point, and a pad for indicating that a defect has occurred and the product is not produced. A mark is formed for each circuit K. The bad mark is normally blank, and is added manually by an operator when a defect is confirmed during production, or automatically by an inspection device or the like.

FIG. 2 illustrates the case where there are four mounting points P for one circuit K, but in actuality, a larger number of mounting points P are provided. However, the number is simplified for the sake of explanation here.
In addition, the multi-sided board B shown in FIG. 2 can be provided with a board identifier unique to the board as in the conventional general multi-sided board, but the board identifier is not required due to the unique effect of the present invention. Therefore, the multi-sided board B shown here has no board identifier.

(Electronic component mounting equipment)
FIG. 3 is a perspective view of the electronic component mounting apparatus 10, and FIG. 4 is a block diagram showing a control system of the production system 100. In FIG. 4, only one electronic component mounting apparatus 10 is shown in a simplified manner.
As shown in the figure, the electronic component mounting apparatus 10 includes a base 2 on which each constituent member is placed on the upper surface, and a substrate transfer means for transferring the multi-sided substrate B from the pre-process to the post-process along the X-axis direction. 3, a component supply unit 4 that supplies the electronic component D, a mounting head 6 that mounts the electronic component D supplied by the component supply unit 4 on the multi-sided board B, and the mounting head 6 in the X and Y axis directions. And a control unit 1 for controlling the operation of each unit.

The substrate transport means 3 transports the multi-sided substrate B from the pre-process side to the post-process side along the substrate transport path by a transport belt extending in the X-axis direction.
The component supply unit 4 includes a plurality of electronic component feeders 4a that hold component reels arranged side by side along the X-axis direction, and a component tape in which electronic components are stored side by side is wound around the component reel. The component reel is detachable from the electronic component feeder 4a, so that electronic components can be replenished and replaced.
The head moving means 7 includes a guide rail that can move the mounting head 6 in the X-axis direction and the Y-axis direction, and includes a motor (not shown) that serves as a driving source for movement in each direction. With these, the mounting head 6 can be positioned at an arbitrary position on the horizontal plane.
The mounting head 6 includes a suction nozzle 6a for electronic components and a lifting / lowering means (not shown) for moving the suction nozzle 6a up and down, and receives the electronic components from each electronic component feeder 4a by the transfer of the head moving means 7 and a multi-sided substrate. It is possible to mount electronic components on B.
The mounting head 6 is mounted with a camera 8 as an imaging means. The camera 8 is positioned at an arbitrary imaging position by the head moving means 7, and for example, reading of circuit identifiers M1 to M4 of the multi-sided board B, reading of positioning marks and bad marks of each circuit (not shown), and the like are performed.

  In addition, the control unit 1 stores, in a work area, a CPU 1a that controls each of the above components, a ROM 1b that stores a program that controls each unit and a program that accumulates production history information, which will be described later, and various data relating to the processing of the CPU 1a. A RAM 1c for storing, an EEPROM 1d for storing a later-described divided production program distributed from the production management device 20, and a communication unit 1e for transmitting / receiving the divided production program to / from the production management device 20 via a communication line. ing.

(Production management equipment)
The production management device 20 is constituted by an information processing terminal composed of, for example, a PC (Personal Computer), and is connected to the control unit 1 of each electronic component mounting device 10 through a communication line.
As shown in FIG. 4, the production management apparatus 20 stores in a work area a ROM 22 that stores a program for managing a production program, which will be described later, a CPU 23 that executes a program in the ROM 22, and various data relating to the processing of the CPU 23. A RAM 24 and a communication unit 25 that transmits and receives a divided production program to and from each electronic component mounting apparatus 10 via a communication line are provided. In addition, the production management device 20 stores a production program and a divided production program obtained by dividing the production program in the storage device 21 provided therewith.

(Production program)
The production management apparatus 20 creates a divided production program by dividing a production program in which settings related to mounting work contents of electronic components on the entire multi-circuit board are performed for each allocation of the electronic component mounting apparatuses 10 on the line. In the following description, the description will be made on the assumption that the line is composed of two electronic component mounting apparatuses 10.
FIG. 5 is an explanatory diagram illustrating the created production program in a table format. As shown in the figure, the production program includes a “mounting device identifier” that identifies the electronic component mounting device 10 to be mounted, a “circuit number” that indicates a circuit to be mounted in the multi-sided board B, and a mounting in each circuit. It has setting items of “mounting ID” for specifying a mounting point as a position and “component ID” for specifying an electronic component to be mounted. These items are setting information necessary for each electronic component mounting apparatus 10 to perform electronic component mounting on a specific multi-sided board B, and are set before mounting. Such setting may be performed by the production management apparatus 20 or an externally created one may be input to the production management apparatus 20.
And according to this setting content, each electronic component mounting apparatus 10 which comprises a line is controlled, and an electronic component is mounted with respect to the multi-sided board | substrate B. FIG.

The production management device 20 divides the production program set for the “mounting device identifier”, “circuit number”, “mounting ID”, and “component ID” for each electronic component mounting device 10 in the line and divides the production program. Is distributed to each electronic component mounting apparatus 10 through the network line. Such distribution may be performed in response to a transmission request from the control unit 1 of each electronic component mounting apparatus 10.
Note that the production management apparatus 20 may record each divided production program on a recording medium or the like instead of distribution via the line and read the divided production program with a reading device provided in each electronic component mounting apparatus 10. good.

FIGS. 6A and 6B show the state in which production history information is accumulated by the mounting operation of each electronic component mounting apparatus 10 in a tabular format for the divided production program divided by the two electronic component mounting apparatuses 10. It is explanatory drawing illustrated in figure.
When the divisional production program is acquired, each electronic component mounting apparatus 10 performs the “mounting time”, “basic circuit identifier”, “circuit identifier”, and “reel ID” as the production history information described above during the electronic component mounting operation. Record.
The above “mounting time”, “basic circuit identifier”, “circuit identifier”, and “reel ID” are production history information that each electronic component mounting apparatus 10 acquires and records during mounting work.
The “mounting time” is acquired by recording the time each time an electronic component is mounted by a clock provided in the electronic component mounting apparatus 10.
The “basic circuit identifier” and the “circuit identifier” are acquired by reading the circuit identifiers ID1 to ID4 in the circuits K1 to K4 of the multi-sided board B during the mounting operation. Note that this reading is not performed every time an electronic component is mounted, but is executed when the multi-chip board B is transported to each electronic component mounting apparatus 10 in the line.
The “reel ID” is acquired by reading a barcode attached to a reel when the reel is set or exchanged by a reader. The reader may be provided in the electronic component mounting apparatus 10 but may be read by an operator using a handy scanner or the like. Such a reel ID is not read every time an electronic component is mounted, but is read only when a reel is set or replaced.
When the mounting operation is completed for one multi-sided board B, production history information for one board is generated and fed back to the production management apparatus 20.
It should be noted that circuit identifiers that are not to be read by a circuit identifier reading schedule, which will be described later, are fed back to the production management device 20 in a state in which production history information is stored and not recorded blank (for example, FIG. The case of circuit numbers 3 and 4 in A) and the case of circuit number 2 in FIG. 6B).

(Basic circuit identifier)
Here, the “basic circuit identifier” and the “circuit identifier” will be described in detail. As described above, the “circuit identifier” is given a circuit identifier ID to each circuit K on the multi-sided board B, and a unique number or code is used for the contents of the identifier. Even after the division, if the circuit identifier ID is known, it is possible to read the production history information and setting information of the circuit.

  The simplest production management method is to read the circuit identifier IDs of all the circuits K by all the electronic component mounting apparatuses 10 when the multi-sided board B is mounted by a plurality of electronic component mounting apparatuses 10 in a line. A method of collecting and storing all production history information obtained by each electronic component mounting apparatus 10 for each circuit identifier ID is conceivable. In this case, the same circuit identifier ID is read by each electronic component mounting apparatus 10. Are performed in duplicate, the reading time increases and the work efficiency is reduced.

In this production system 100, in order to avoid a decrease in work efficiency due to the identifier reading time, among the circuit identifiers in each multi-sided board B, all the electronic component mounting apparatuses 10 in the line read the circuit identifier. Define only one circuit to perform. This is referred to as a “basic circuit”. Further, circuit identifiers of other circuits are distributed and read so as not to cause duplication in each electronic component mounting apparatus 10. In each electronic component mounting apparatus 10, the circuit identifier of the basic circuit that has been read (hereinafter referred to as the basic circuit identifier) and the other circuit identifier that has been read are included in the production history information.
As a result, production history information is acquired in a state where it is separated for each of a plurality of electronic component mounting apparatuses 10 constituting a line for one circuit, and only a part of circuit identifiers are recorded in each production history information. Since the basic circuit identifier is included in common, it is possible to read all the production history information on the same multi-chip board B. Therefore, even when production history information is required later for a certain circuit K, it is possible to read production history information for the entire line.

For example, as in the example of FIGS. 6A and 6B described above, the basic circuit identifier is the circuit identifier ID1 of the circuit K1, and the first electronic component mounting apparatus 10 has only two circuit identifiers ID1 and ID2. Without reading, the second electronic component mounting apparatus 10 can easily find two pieces of total production history information having the same basic circuit identifier ID1 even when only three circuit identifiers ID1, ID3, and ID4 are read. And can be easily integrated. Therefore, it is possible to easily obtain production history information of the entire line in each circuit K.
Thus, even if all the electronic component mounting apparatuses 10 do not read all the circuit identifier IDs on the multi-sided board B, it is possible to manage production history information similar to the case where all are read. ing.

(Circuit identifier reading schedule)
When the reading of the circuit identifier ID is distributed by each electronic component mounting apparatus 10 as described above, which circuit identifier on the multi-sided board B should be the basic circuit identifier, and each circuit identifier is read by each electronic component. It is desirable to determine how the distribution is performed by the mounting apparatus 10 before mounting.
Therefore, the production management apparatus 20 determines in advance which circuit identifier on the multi-sided board B should be a basic circuit identifier, and how each electronic component mounting apparatus 10 distributes reading of each circuit identifier, A circuit identifier reading schedule in which the contents are tabulated is distributed to each electronic component mounting apparatus 10 together with the divided production program.

FIG. 7 is an explanatory diagram illustrating a circuit identifier reading schedule in a table format. The circuit identifier reading schedule shown in FIG. 7 corresponds to the setting contents of the divided production program shown in FIG. M1 and M2 are mounting device identifiers of the two electronic component mounting devices 10 constituting the line.
In FIG. 7, “◯” in the frame is a flag indicating that reading is performed, and “×” is a flag indicating that reading is not performed.
When creating the circuit identifier reading schedule, if the circuit identifier ID1 of the circuit K1 is a basic circuit identifier, as shown in FIG. 7, all the electronic component mounting apparatuses 10 on the line are set to read the basic circuit identifier ID1 without fail. The Assuming that the number of circuits K on the multi-sided board B is n, the circuit identifiers of the remaining n−1 circuits excluding the basic circuit are not redundantly read by each electronic component mounting apparatus on the line, In addition, it is set so that the number of readings is averaged and read. For example, in the case of FIG. 7, the circuit identifiers ID2, ID3, and ID4 of the circuits K2, K3, and K4 are read by the two electronic component mounting apparatuses 10; The mounting apparatus 10 is determined to read the circuit identifier ID2 of the circuit K2, and the second electronic component mounting apparatus 10 is determined to read the circuit identifiers ID3 and ID4 of the circuits K3 and K4. As in this case, depending on the number of circuits of the multi-sided board B and the number of electronic component mounting apparatuses 10, the reading may not necessarily be uniform, but in that case, reading of the remaining circuits in order from the top or the back of the line is performed. To do.

  The electronic component mounting apparatus 10 may not be an electronic component mounting target for the circuit K that is the target of reading the circuit identifier ID according to the circuit identifier reading schedule, but there is no particular problem. On the contrary, there is no particular problem even when the electronic component mounting apparatus 10 is not set as a circuit identifier reading target for a circuit to be mounted by the electronic component mounting apparatus.

  In addition, a bad mark may be attached to each circuit K of the multi-sided board B. The electronic component mounting apparatus 10 that reads the circuit identifier ID of the circuit K with the bad mark is a mounting operation. In some cases, control may be performed so as to skip reading of the circuit identifier ID of the circuit K with the bad mark.

Further, although the circuit identifier reading schedule shown in FIG. 7 does not specify the reading order of the circuit identifier ID to be read, it may be set by the circuit identifier reading schedule up to that order. FIG. 8 is an explanatory diagram illustrating the circuit identifier reading schedule set up to the reading order in a table format.
In FIG. 8, the numerical values in the frame indicate the reading order, and only 0 indicates that reading is not performed. In this example, the first electronic component mounting apparatus 10 is set to read these two in the order of circuit identifiers ID2 and ID1, and the second electronic component mounting apparatus 10 has circuit identifiers ID1, ID4, and ID3. These three readings are set in this order.
Further, the production management device 20 shortens the time required for reading the circuit identifier by using, for example, an approximate solution of the traveling salesman problem in the order of reading the circuit identifier in creating the circuit identifier reading schedule. It may be defined.

Next, how to distribute a plurality of circuit identifiers to a plurality of electronic component mounting apparatuses 10 will be described.
FIG. 9 is an explanatory diagram showing the concept of the first distribution method.
As a first distribution method, distribution is performed so that the number of circuit identifiers to be read or the time required for reading is made as uniform as possible on the assumption that the basic circuit identifiers are included as both reading targets.
In this first distribution method, as shown in FIGS. 9A and 9B, for each electronic component mounting apparatus 10, the time required for mounting on one multi-sided board B is set almost evenly by the production program. It is particularly effective when

Normally, when dividing the production program, the line balance is taken into consideration so that the difference in time required for mounting each electronic component mounting apparatus 10 is substantially equal to zero. Therefore, the number of read circuit identifiers as shown in FIG. Is simply averaged by each electronic component mounting apparatus 10, but the difference in mounting time does not necessarily become zero depending on the presence or absence of an electronic component recognition apparatus possessed by the electronic component feeder 4a or the electronic component mounting apparatus 10. Sometimes it happens. In such a case, the reading number of the circuit identifier ID is distributed to the electronic component mounting apparatus 10 with a short mounting time of one multi-sided board B, and the reading time of the circuit identifier ID is included. You may make it perform the 2nd distribution method which produces a circuit identifier reading schedule so that the difference in production time becomes substantially zero.
FIG. 10 is an explanatory diagram showing the concept of the second distribution method. That is, on the premise that the basic circuit identifier ID1 is included as both reading targets, in each electronic component mounting apparatus 10, the circuit is arranged so that the sum of the required mounting time and the reading time of the circuit identifier is as uniform as possible. The number of individuals that read the identifier ID is adjusted. For example, as shown in FIGS. 10A and 10B, when the time required for mounting one of the electronic component mounting apparatuses 10 is short, the circuit identifier ID is adjusted so as to increase the number of individuals read.
Thereby, it becomes possible to make the line balance by each electronic component mounting apparatus 10 favorable.
Whether the production management apparatus 20 selects the first method or the second method may be such that the time required for mounting each electronic component mounting apparatus 10 is acquired from the production program and automatically selected. Either of the first method and the second method may be set in advance.

(Integration of production history information)
As described above, production history information is fed back from each electronic component mounting apparatus 10 to the production management apparatus 20 through a communication line. The production management device 20 stores the production history information returned from each electronic component mounting device 10 in the storage device 21 and integrates the production history information for the same multi-chip board B into one production history information. Process.
That is, when each electronic component mounting apparatus 10 constituting the line finishes mounting the electronic component on one multi-sided board B, the production history information is transmitted to the production management apparatus 20, and the production management apparatus 20 stores it in the storage device 21. To do. Then, when there is an undetermined circuit identifier in the production history information from each electronic component mounting apparatus 10, the production management device 20 uses the same basic circuit identifier as the basic circuit identifier recorded in the production history information. Search and integrate all other production history information it contains.
FIG. 11 is an explanatory diagram illustrating the production history information generated by the integration of the production history information in a table format.
The circuit identifier of the same circuit on the same board read by the other electronic component mounting apparatus 10 with reference to the production history information for one board in the integrated production history information, and the circuit identifier left undetermined (blank) Instead, as shown in FIG. 12, the production history information of the entire substrate is completed.

(Processing flow of the entire production system)
The overall processing flow of the production system configured as described above will be described with reference to the flowcharts of FIGS.
FIG. 13 is a flowchart showing processing in the production management apparatus 20 at a stage before the mounting work on the line is started.
As shown in the figure, the production management device 20 divides the production program for each electronic component mounting device 10 in the line while the storage device 21 holds the production program for the entire line (step S1). : See FIG.
Next, a circuit identifier reading schedule for each electronic component mounting apparatus 10 is created according to the circuit identifier distribution method described above (step S2: see FIGS. 7 and 8).
The divided production program and the circuit identifier reading schedule are stored in the storage device 21.

FIG. 14 is a flowchart showing processing performed by the production management apparatus 20 and each electronic component mounting apparatus 10 during mounting on the line.
First, the production management apparatus 20 transmits a divided production program to each electronic component mounting apparatus 10 (step S11). Thereby, each electronic component mounting apparatus 10 receives a divided production program (step T11).
Next, the production management apparatus 20 transmits a circuit identifier reading schedule to each electronic component mounting apparatus 10 (step S12). Thereby, each electronic component mounting apparatus 10 receives a circuit identifier reading schedule (step T12).

Then, the multi-sided board B is put into the line, and each electronic component mounting apparatus 10 enters a waiting state for arrival of the multi-sided board B (step T13).
When the multi-chip board arrives, the electronic component mounting apparatus 10 reads the basic circuit identifier and the assigned circuit identifier according to the circuit identifier reading schedule. Such reading is performed by controlling the head moving means 7 to convey the camera 8 on the mounting head 6 to each circuit identifier position (step T14).

Next, the electronic component mounting apparatus 10 starts mounting on each mounting point in each circuit K of the multi-sided board B according to the setting information of the split production program.
First, it is determined whether or not mounting has been performed up to the final mounting point of the multi-sided board B defined in the split production program (step T15). If the final mounting point has not yet been reached, the target mounting point is sequentially reached. Electronic components are mounted (step T16).
When mounting an electronic component, production history information at the mounting point is acquired and recorded in the production history information (step T17).

FIG. 15 is a subroutine flowchart showing details of the production history information acquisition process at each mounting point.
As shown in the figure, the electronic component mounting apparatus 10 records basic production history information such as mounting time and reel ID at the time of mounting and a basic circuit identifier (step T31). The mounting time is obtained by referring to a clock in the apparatus, and the reel ID refers to a record of data read when the reel is set.
Next, the electronic component mounting apparatus records the circuit identifier ID of the circuit K to which the mounting point belongs. At this time, it is determined whether or not the circuit identifier ID of the circuit K to which the mounting point belongs has been read by the circuit identifier reading schedule initially distributed during the mounting operation (step T32).
If it is a reading target, the record of the read circuit identifier is read and recorded in the production history information (step T33).
If it is not subject to reading, the record of the circuit identifier is unconfirmed (blank) (step T34).
The processes in steps T31 to T34 are executed every time the mounting operation for each mounting point is performed.

  Then, when the production history information is recorded, the electronic component mounting apparatus 10 determines again whether or not the final mounting point of the multi-sided board B has been mounted (step T15), and reaches the final mounting point. If not, the processes in steps T15 to T17 are repeated.

Moreover, if the mounting of the electronic component is completed up to the final mounting point, the production history information is recorded for one multi-sided board B (see FIG. 6).
Therefore, the production history information for one multi-sided board is transmitted to the production management apparatus 20 (step T18).
Then, the electronic component mounting apparatus 10 determines whether or not the multi-sided board B is the final scheduled board (step T19), and if it is not the final multi-sided board B, the process returns to step T13. The process of steps T13 to T18 is newly executed for the next multi-sided board B, and if it is the final board, the operation of the electronic component mounting apparatus 10 is completed.

On the other hand, when the production history information for one multi-sided board B is received from the electronic component mounting apparatus 10 (step S13), the production management apparatus 20 is based on the final electronic component mounting apparatus 10 in the line. A determination is made (step S14).
If it is not the production history information of the final electronic component mounting apparatus, the next production history information is waiting to be received. If it is the production history information of the final electronic component mounting apparatus, mounting is completed. A process of integrating production history information into one for the chamfered substrate B is performed (step S15).

FIG. 16 is a flowchart of a subroutine showing details of processing for integrating production history information.
The production management apparatus 20 reads and integrates the pieces of production history information in each electronic component mounting apparatus 10 that have the same basic circuit identifier.
Then, in the integrated production history information, a determination is made as to whether any of the mounting points has an undefined circuit identifier ID (step S31).
Then, when there is an undefined circuit identifier, the production history information in which the circuit numbers are equal and the circuit identifier ID is recorded is read out in the integrated production history information, and the same as the undefined circuit identifier. A circuit identifier is recorded (step S32).
Again, a determination is made as to whether there is an indeterminate circuit identifier ID. If there is, the path identifier ID is similarly searched and recorded, and this is finally determined until there are no more unidentified circuit identifiers. repeat.
Then, when the recording of all the circuit identifier IDs is completed, the process is terminated.

  The production management apparatus 20 also repeats the same processing for S13 to S15 for the next multi-sided substrate B, and sequentially generates production history information for each multi-sided substrate B.

(Technical effects of production management methods in production systems)
In the production system 100, all the electronic component mounting apparatuses 10 on the line read the circuit identifier ID1 of the basic circuit K1, and the electronic component mounting apparatuses 10 are duplicated for the circuits K2 to K4 other than the basic circuit K1. Since the reading operation is distributed so as not to be read, the time required for reading the circuit identifier ID is shortened as compared with the case where all the electronic component mounting apparatuses 10 on the line read all the circuit identifier IDs on the multi-sided board B at the time of mounting. It is possible to improve the efficiency of mounting work.
In addition, the production history information of each electronic component mounting apparatus 10 is in an undetermined state with respect to some circuit identifiers, but all of them include reading information of circuit identifiers of basic circuits in common. It can be seen that this is production history information for the same multi-sided substrate B. Therefore, when the production management device 20 integrates the divided production management information for the same multi-chip board, it is possible to obtain the read information of the undetermined circuit identifier from the divided production management information of the other electronic component mounting device 10, It is possible to specify circuit identifiers for all mounting points.
And since all the reading information of the circuit identifier contained in the production history information of each electronic component mounting apparatus 10 is actually read and acquired from the multi-sided board B, for example, for shortening the reading time. The circuit identifier for each circuit is an identifier partially including the board identifier of the multi-sided board, the actual reading operation of all circuit identifiers is omitted, only the board identifier is read, and the board identifier is included in the history information. Compared with a conventional history management method, it is possible to obtain high reliability as information.

  Further, in the production system 100, the circuit identifier reading schedule as the schedule information is used to equalize the reading time of the circuit identifier in each electronic component mounting apparatus 10, and furthermore, the total of the mounting time and the reading time of the circuit identifier is calculated. Since it becomes uniform, it becomes possible to aim at the improvement of a line balance about each electronic component mounting apparatus 10 in a line.

(Other)
Although the case where there is only one basic circuit identifier is illustrated, it is possible to set two or more. However, as the number of basic circuit identifiers is smaller, the number of circuit identifiers read by each electronic component mounting apparatus can be reduced and the reading time can be shortened.

(About sharing of circuit identifier reading)
In the production system 100, each electronic component mounting apparatus 10 is set in the circuit identifier reading schedule so that the circuit identifier of the basic circuit is surely read. You don't have to decide.
FIG. 17A conceptually shows a method of sharing circuit identifiers in each electronic component mounting apparatus 10 in the production system 100. Here, the code S is a single circuit identifier, and the area surrounded by the codes G1 to G3 is a group of circuit identifiers that one electronic component mounting apparatus 10 reads. Here, for clarity of explanation, the number of electronic component mounting apparatuses constituting the line is three.
In the sharing method of the production system 100 described above, the sharing is performed so that one circuit identifier S is included in all the groups G.
However, as shown in FIG. 17 (B), the sharing may be a sharing method in which overlapping partially and overlapping groups are finally combined into one group. . In this case, there is no unique circuit identifier that can be read by all the electronic component mounting apparatuses 10, but search for duplicate circuit identifiers in each group and add together groups having common circuit identifiers. As a result, a group including all circuit identifiers of one multi-sided board B can be formed. As a result, it is possible to fill in the undetermined circuit identifiers in the production history information as in the case where all the electronic component mounting apparatuses 10 read only one basic circuit identifier. That is, even if the sharing method of FIG. 17B is adopted, the same effect as the sharing method of FIG. 17A can be obtained.

Further, as a method for easily performing the sharing as shown in FIG. 17B, the electronic component mounting apparatus 10 other than the electronic component mounting apparatus at the head of the line must always read the electronic component mounting apparatus 10 upstream from itself. There is a method of reading circuit identifiers so that one duplication is generated from the group of circuit identifiers performed. Thereby, it is possible to easily realize the sharing as shown in FIG.
Accordingly, in this case, each electronic component mounting apparatus 10 provides information indicating which circuit identifier has been read to the downstream electronic component mounting apparatus 10, and each electronic component mounting apparatus 10 is upstream of itself. One circuit identifier is selected from the circuit identifiers read on the side (two or more, but one is preferable for speeding up), and the circuit identifier is read so as to include it. The control unit 1 is configured.
Further, in addition to the above configuration, each electronic component mounting apparatus 10 may be configured to minimize the time for reading the circuit identifier.
Further, it may be configured such that the earlier one is automatically selected by comparing the reading time between the method of automatically selecting on the downstream side and the method of performing reading by determining the basic circuit identifier. For example, in the case of reading in which the basic circuit identifier is determined, the circuit identifiers ID1, ID2 and the circuit identifiers ID1, ID3, ID4 are grouped, and the method of selecting automatically on the downstream side includes the circuit identifier ID1, When grouping is performed by ID2 and circuit identifiers ID2, ID3, and ID4, as a result of calculating respective required times, for example, when the latter can be read in a short time, the latter is selected. .

DESCRIPTION OF SYMBOLS 10 Electronic component mounting apparatus 20 Production management apparatus 100 Production management system B Multiple board | substrate G1-G3 Group ID1-ID4, S Circuit identifier K1-K4 Circuit

Claims (14)

Production comprising a line composed of a plurality of electronic component mounting devices for mounting electronic components on a circuit on each divided substrate obtained by dividing a multi-sided substrate, and a production management device for acquiring production history information of the entire line In the system,
All the electronic component mounting devices on the line share the reading of a plurality of circuit identifiers on the multi-sided board so that some overlap occurs, and
The grouping of the circuit to be read of the circuit identifier, the sharing is made so as to finally become one group when connected with those that cause duplication,
Each electronic component mounting device of the plurality of electronic component mounting devices includes the production history information at the time of mounting the multi-cavity board and includes the information of each circuit identifier that has been read in the production history information,
The production management device collects production history information acquired by each of the electronic component mounting devices, and acquires production management information of the entire line including information on circuit identifiers of all circuits of the multi-sided board. And production system. While all of the electronic component mounting devices on the line read the circuit identifier of the basic circuit with any circuit of the multi-sided board as a basic circuit,
2. The production system according to claim 1, wherein circuits other than the basic circuit are read by each electronic component mounting apparatus in a shared manner.   Which circuit is the basic circuit of the multi-sided board, and each circuit other than the basic circuit of the multi-sided board is based on circuit identifier reading schedule information that determines which of the electronic component mounting devices is to read. The production system according to claim 2, wherein each electronic component mounting apparatus reads each circuit identifier.   4. The circuit identifier reading schedule information according to claim 3, wherein the number of individuals or the time required for reading all circuit identifiers of the multi-sided board for each electronic component mounting apparatus on the line is averaged. Production system. Each electronic component mounting apparatus performs a mounting operation based on a production program that defines which electronic component mounting apparatus mounts an electronic component mounted on the multi-sided board, and
The average operation time required for totaling the mounting work and the reading of all the circuit identifiers for each of the electronic component mounting apparatuses is determined by the production program and the circuit identifier reading schedule information. 3. The production system according to 3.   The downstream electronic component mounting apparatus reads the circuit identifier so as to include the circuit identifier of any one circuit among the circuit identifiers of the circuits read by the electronic component apparatus upstream of the line. Item 1. The production system according to Item 1.   The said circuit identifier is provided in the said polyhedral circuit board using the memory | storage element memorize | stored as a one-dimensional or two-dimensional display or data, The Claim 1 characterized by the above-mentioned. Production system. Production comprising a line composed of a plurality of electronic component mounting devices for mounting electronic components on a circuit on each divided substrate obtained by dividing a multi-sided substrate, and a production management device for acquiring production history information of the entire line In the system production management method,
All the electronic component mounting devices on the line share the reading of a plurality of circuit identifiers on the multi-sided board so that some overlap occurs, and
The grouping of the circuit to be read of the circuit identifier, the sharing is made so as to finally become one group when connected with those that cause duplication,
With each electronic component mounting device of the plurality of electronic component mounting devices, including production history information when mounting the multi-sided board, and including information on each circuit identifier that has been read in the production history information,
The production management apparatus collects production history information acquired by each of the electronic component mounting apparatuses, and acquires production management information for the entire line including information on circuit identifiers of all circuits of the multi-sided board. Production management method. While reading any circuit identifier of the basic circuit by all the electronic component mounting devices on the line with any circuit of the multi-sided board as a basic circuit,
9. The production management method according to claim 8, wherein a circuit identifier other than the basic circuit is read by sharing the electronic component mounting apparatuses.   Which circuit is the basic circuit of the multi-sided board, and each circuit other than the basic circuit of the multi-sided board is based on circuit identifier reading schedule information that determines which of the electronic component mounting devices is to read. The production management method according to claim 9, wherein each circuit identifier is read by each electronic component mounting apparatus.   11. The production management method according to claim 10, wherein the time required for reading all circuit identifiers of the multi-sided board for each electronic component mounting apparatus on the line is averaged based on the circuit identifier reading schedule information. Each electronic component mounting apparatus performs a mounting operation based on a production program that defines which electronic component mounting apparatus mounts an electronic component mounted on the multi-sided board, and
The average operation time required for totaling the mounting work and the reading of all the circuit identifiers for each of the electronic component mounting apparatuses is determined by the production program and the circuit identifier reading schedule information. 10. The production management method according to 10.   9. The electronic component mounting apparatus on the downstream side reads one of the circuit identifiers of the circuits read by the electronic component apparatus on the upstream side of the line as a basic circuit, and reads the circuit identifier. Production management method.   14. The circuit identifier according to claim 8, wherein the circuit identifier is provided on the multi-surface circuit board using a storage element that stores a one-dimensional or two-dimensional display or data. Production management method.

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