JP4705892B2 - Production control method - Google Patents

Description

  The present invention relates to a production control method for controlling a plurality of production lines for producing a plurality of types of component mounting boards in parallel.

  2. Description of the Related Art Conventionally, electronic device manufacturers produce a wide variety of component mounting boards that constitute electronic products that are products. Such electronic equipment manufacturers produce various types of component mounting machines (hereinafter referred to as “component mounting machines”) suitable for mounting these components according to the types of components mounted on a printed circuit board (hereinafter simply referred to as “substrate”). , Simply referred to as “equipment”), and a plurality of types of component mounting boards are produced by a plurality of production lines (hereinafter simply referred to as “lines”) having different equipment configurations.

  Further, in such electronic equipment manufacturers, since it is necessary to produce a large number of various types of component mounting boards, it is an issue to improve the production efficiency of each production line.

  In recent years, various methods for optimizing the mounting order of components when mounting components on a substrate by a component mounting machine have been proposed. Among such mounting order optimization methods, there is a method for optimizing the mounting order so as to reduce the production tact (production time) per component mounting board (for example, Patent Document 1). reference).

  By mounting components on a board according to the mounting order optimized by such an optimization method, the number of produced component-mounted boards per unit time can be improved.

In other words, when multiple types of component mounting boards are produced on the line corresponding to each type, the production efficiency of each line can be improved by optimizing the mounting order of the component mounting machines constituting each line. .
JP 2002-50900 A

  Here, the types and the number of component mounting boards constituting devices such as electronic devices are determined in advance, and are produced on a line corresponding to each type. That is, when one set of the component mounting board group of the determined type and number is completed, one device can be produced.

  Therefore, even if one type of component mounting board necessary for the production of one device is produced in the necessary number, other types of component mounting boards necessary for the production of the device are produced in the necessary number. If not, these produced component mounting boards are accumulated as inventory (such inventory is hereinafter referred to as “intermediate inventory”), for example, in a space near the production line until they are used for production of equipment. .

  In a factory that manufactures component mounting boards, when such an intermediate inventory increases, not only does the existence of the intermediate inventory compress a space in the factory, but also various loads related to inventory management increase.

  In addition, for example, all of the intermediate stock may become a completely unnecessary stock due to a change in the design of the device or a change or cancellation of the production plan. In this case, a cost for discarding unnecessary inventory is further generated.

  Thus, the presence of intermediate inventory in the production process of equipment becomes a factor causing various problems. Therefore, to reduce the number of intermediate stocks as much as possible is one of the problems to be solved by manufacturers that produce such component mounting boards.

  Therefore, it is assumed that the above-described conventional technique is applied to a production line for producing a component mounting board constituting a device. In this case, the production efficiency of each line, that is, the number of produced component mounting boards per unit time is independently improved.

  Therefore, although the effect to the problem of improving the production efficiency of each type of component mounting board is exhibited, it cannot be said to be effective to the problem of reducing the number of intermediate inventory. In addition, for example, there is a possibility that the intermediate inventory may increase compared with before applying the above-described conventional technology due to an increase in the difference in production amount per unit time of each line.

  For example, it is assumed that three types of component mounting boards are necessary for the production of a video deck, which are board A, board B, and board C, respectively. In addition, it is assumed that the required number of sheets is two for substrate A, one for substrate B, and three for substrate C.

  Assuming that these three types of component mounting boards are first produced on one line, the intermediate inventory continues to increase until a certain time as shown in FIG.

  FIG. 17 is a diagram showing an example of transition of intermediate inventory when a plurality of types of component mounting boards are produced on one conventional line.

  In the example shown in FIG. 17, the theoretical transition of the number of intermediate stocks in the case of producing a component mounting board for producing 100 video decks is shown.

  As shown in FIG. 17, after 200 substrates A are produced (t1) and the substrate B100 is produced (t2) and then 3 substrates C are produced (t4), one set of a total of 6 component mounting substrates is formed. It will be consumed for the production of one VCR. Thereafter, each time three substrates C are produced, this set is consumed for production of one video deck.

  As described above, when a plurality of types of component mounting boards are produced in one line, production tact (from 0 to t5 shown in FIG. It is possible to shorten the period. However, the maximum number of intermediate inventory is not limited.

  Moreover, the transition of the number of intermediate stocks when the board A, the board B, and the board C are produced in parallel on the corresponding lines is as shown in FIG.

  FIG. 18 is a diagram showing an example of transition of intermediate inventory when a plurality of types of component mounting boards are produced on a plurality of conventional lines.

  The length of the white arrow shown in FIG. 18 is a production tact (hereinafter referred to as “unit line tact”) required for producing a required number of component mounting boards for each set of lines 1 to 3. It represents the length.

  As described above, the length of the unit line tact varies depending on the type of component mounting substrate to be produced, the number of components mounted on the substrate, the equipment configuration of the line, and the like. Therefore, the number of intermediate inventory continues to increase for a certain period.

  Specifically, as shown in FIG. 18, every time three substrates C are produced in the line 3 with the longest unit line tact (T1, T2, T3), two substrates A and one substrate B are generated. A total of six component mounting boards, including three boards and three boards C, are consumed for the production of the video deck.

  However, for example, at the time of T2, two sets (6 pieces) of the substrate C have been produced, whereas three sets (6 pieces) of the substrate A have been produced, and four sets of the substrate B (4 pieces (4 pieces). Sheets) have been produced.

  Therefore, at the time when T2 elapses, two sets of component mounting board groups are consumed for production of the video deck, while two boards A and two boards B are accumulated as intermediate stock. .

  Thereafter, the number of substrates C produced per unit time in line 3 becomes a bottleneck, and at least the number of substrates C produced reaches the required number, and the intermediate inventory quantity increases until the production of substrates C is completed. It will be.

  Further, for example, in the example shown in FIG. 18, when the above-described conventional technique is applied, the production efficiency of the line 2 is dramatically improved and the production efficiency of the line 3 is not so much improved. The gap between unit line tacts of 3 widens, and more intermediate stocks are held.

  In other words, as described above, the conventional technology reduces the number of intermediate stocks in a production system in which each of a plurality of types of component mounting boards is arranged in a specific number so that the component mounting board group is flowed to the subsequent process. There is no effect, and there is even a possibility of increasing it compared with the case where the above conventional technique is not applied.

  The present invention is a production control method for controlling a plurality of production lines for producing a plurality of types of component mounting boards in parallel in consideration of the above-described conventional problems, and a production control method for reducing the number of intermediate stocks. The purpose is to provide.

  In order to achieve the above object, a production control method of the present invention is a production control method for controlling a plurality of production lines for producing a plurality of types of component mounting boards provided in a device in parallel. Each of the lines is for producing one type of component mounting board among the plurality of types, and the production control method is for each type of component mounting board provided in one device and for each type. A combination acquisition step of acquiring combination information indicating the number of sheets, and a plurality of production lines for each set of component mounting board groups each of which includes the type and the number of sheets indicated in the acquired combination information, Control steps for controlling a plurality of production lines.

  As described above, according to the production control method of the present invention, a plurality of types of component mounting boards can be made into one set and can be produced on a plurality of production lines in units of this set.

  In a plurality of production lines controlled by this production control method, a set of component mounting board groups is sequentially produced. In other words, the produced one set of component mounting boards can be moved to a production line or the like that produces equipment in which the set is incorporated every time the production of the set is completed. Therefore, the occurrence of intermediate inventory can be suppressed.

  Further, in the production control method of the present invention, the control step produces a unit board that is a component mounting board of a type and the number corresponding to each of the plurality of production lines indicated by the combination information. A production time acquisition step for acquiring a unit production time necessary for the determination, a specification step for specifying a reference line that is a production line corresponding to the longest unit production time among the plurality of acquired unit production times, and a specified While the reference line is producing the component mounting board of the unit number board of the own line, the subordinate line that is a production line other than the reference line finishes the production of the unit number board of the own line. Determining a production condition for a production line, and providing the determined production condition to one or more production lines, It may be produced for each of the set of the component mounting board group to the number of production lines.

  Thereby, the production conditions for a plurality of lines can be determined based on the longest unit production time, that is, the slowest production speed. That is, the production conditions for completing a set of component mounting board groups can be determined within the unit production time, and a set of component mounting board groups can be sequentially produced on a plurality of production lines.

  The number of types corresponding to the reference line indicated in the combination information is N (N is an integer equal to or greater than 1), and the number of types corresponding to the subordinate line is M (M is an integer equal to or greater than 1). In the determining step, as the production conditions, substrate loading timings to each of the plurality of production lines are determined, and the loading timing is determined based on the reference line and the subordinate for each longest unit production time. The timing may be such that the number of substrates inserted into the line becomes N and M, respectively.

  As a result, as a production condition, it is possible to determine the timing of loading the board into the line according to the number of component-mounted boards to be produced on each line, and one set of component-mounted boards on a plurality of production lines. Groups can be produced sequentially.

  Further, the production time acquisition step includes a calculation step of calculating a difference between a unit production time of the reference line and a unit production time of the subordinate line, and in the determination step, when the calculated difference exceeds a threshold value The mounting condition of the component mounting machine constituting the dependent line is determined as the production condition, and the determined mounting condition is set in the component mounting machine in the control step, and the mounting condition is determined by the dependent line. Component mounting of the component mounter so that the unit production time is within the longest unit production time and the difference between the unit production time of the subordinate line and the longest unit production time is less than or equal to the threshold value It may be a mounting condition for reducing the production rate of the substrate.

  As a result, the production speed of the component mounters constituting the subordinate line can be reduced, and the unit production time of each production line can be made uniform. That is, a set of component mounting board groups can be sequentially produced, and further, reduction of power consumption of the component mounting machine, reduction of the number of parts in stock, and the like are realized.

  Further, even if the production speed of the subordinate line falls, the production efficiency is not lowered when one set of component mounting board groups is sequentially produced because it is within the production speed of the reference line.

  Further, as such mounting conditions, the mounting conditions for reducing the number of beams used for the production of the component mounting board in the component mounting machine, and the movement acceleration of the mounting head for mounting the component on the board, which the component mounting machine has, are provided. Mounting conditions for dropping, mounting conditions for reducing the number of nozzles used for production of component mounting boards, and reducing the number of divisions that are the number of the same type of component storage members that store multiple components of the same type Any one of the mounting conditions or a combination thereof may be adopted.

  As a result, according to the equipment configuration and performance of the component mounters that make up the subordinate line, the optimum mounting conditions are selected to reduce production speed and reduce power consumption or the number of parts inventory. be able to.

  Further, in the production control method of the present invention, the control step includes, for each of the plurality of production lines, a unit number board that is a component mounting board of the type and number of sheets corresponding to each production line indicated in the combination information. A confirmation step for confirming whether or not the production of each of the plurality of production lines is completed, and after instructing the production of each unit number substrate for each of the plurality of production lines, in the confirmation step, all of the plurality of production lines are When it is confirmed that the production of the unit number substrate is completed, the production of each unit number substrate may be instructed again to the plurality of production lines.

  As a result, each line completes production of the unit number substrate of its own line, and when all other lines have finished production of the respective unit number substrate, the production of the unit number substrate is instructed again. become. Therefore, when viewed from the whole of a plurality of production lines, a set of component mounting board groups is sequentially produced.

  Further, the production control device of the present invention is a production control device for controlling a plurality of production lines for producing in parallel a plurality of types of component mounting boards provided in the equipment, and each of the plurality of production lines includes the One type of component mounting board among a plurality of types is produced, and the production control device is a combination that indicates the type of each component mounting board provided in one device and the number of each type of mounting board. Combination acquisition means for acquiring information, and controlling the plurality of production lines so that the plurality of production lines are produced for each set of component mounting board groups of the type and number of sheets indicated in the acquired combination information Control means.

  In a plurality of production lines controlled by this production control device, a set of component mounting board groups is sequentially produced. In other words, the produced one set of component mounting boards can be moved to a production line or the like that produces equipment in which the set is incorporated every time the production of the set is completed. Therefore, the occurrence of intermediate inventory can be suppressed.

  Furthermore, the present invention can be realized as a program including characteristic steps in the production control method of the present invention, realized as a storage medium such as a CD-ROM storing the program, or realized as an integrated circuit. it can. The program can also be distributed via a transmission medium such as a communication network.

  The present invention is a production control method for controlling a plurality of production lines for producing a plurality of types of component mounting boards in parallel, and can provide a production control method for reducing the number of intermediate stocks.

  According to the present invention, for example, when producing a plurality of types of component mounting boards constituting a certain electronic device, it is possible to prevent generation of intermediate stock as much as possible. That is, it is possible to reduce physical, human and economic burdens or risks associated with intermediate inventory.

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

  First, the configuration of a production system including a production control device and a production control device according to an embodiment of the present invention will be described with reference to FIGS.

  FIG. 1 is a schematic diagram showing an outline of a hardware configuration of a production system in the embodiment.

  As shown in FIG. 1, the production system 1 in the present embodiment is composed of three lines 1 to 3, and the type of component mounting board to be produced is determined for each line.

  Specifically, the substrate 1 is produced on the line 1, the substrate B is produced on the line 2, and the substrate C is produced on the line 3. Line 1 includes component mounters 10, 11, 12 and a stocker 21, line 2 includes component mounters 13, 14 and a stocker 22, and line 3 includes component mounters 15, 16 , 17 and 18 and a stocker 23.

  The stockers 21, 22, and 23 are equipment for stocking boards to be used for component mounting boards produced on each line. It should be noted that putting a board into a component mounter adjacent to the stocker is expressed as “putting a board into a line”.

  These lines 1 to 3 can be used to produce component mounting boards under the control of the production control device 20 because the equipment such as the component mounters of each line is connected to the production control device 20 via the LAN 5. Do.

  In the present embodiment, these three types of component mounting boards are used for the production of a video deck, and are composed of two boards A, one board B, and three boards C. (Unit α) is incorporated into the video deck as one unit.

  Information indicating the types of substrates constituting the unit α and the number of types of the substrates is stored in the production control device 20 as combination information.

  In the production system 1 of the present embodiment, the production control device 20 controls each of the lines 1 to 3 based on the combination information, thereby producing these three types of component mounting boards while suppressing the occurrence of intermediate inventory. be able to.

  FIG. 2 is a perspective view showing an appearance of a component mounting machine provided in the production system 1.

  Specifically, the appearance of the component mounter 10 included in the line 1 is shown. The component mounter 10 will be described as a representative component mounter included in the production system 1.

  The component mounter 10 is a device that mounts components on a board. The component mounter 10 mounts components on a substrate 30 that is carried in from a carry-in port 101 on a side surface, and a carry-out port (not shown) that exists on a side surface facing the carry-in port 101. The board 30 on which the components are mounted can be carried out.

  Components are mounted on the substrate 30 unloaded from the component mounter 10 by the component mounter 11 and the component mounter 12, and the substrate A is completed.

  The component mounter 10 includes two mounting stages, a first mounting stage 102 on the upstream side and a second mounting stage 103 on the downstream side, and a mechanism such as a mounting head for mounting components on the board is provided for each mounting stage. I have.

  FIG. 3 is a plan view showing the main configuration inside the component mounter 10.

  In the component mounter 10, each of the first mounting stage 102 and the second mounting stage 103 includes a beam 122 and a mounting head 121 facing each other in the front-rear direction (Y-axis direction). In each mounting stage, two mounting heads 121 that face each other can perform component mounting work on one substrate 30 in cooperation.

  Further, these two mounting stages are independent of each other, and different mounting operations can be performed at the same time.

  Specifically, each mounting head 121 can move in the X-axis direction and the Y-axis direction by moving on the beam 122 in the X-axis direction and further moving the beam 122 in the Y-axis direction.

  The beam 122 has a plurality of motors (not shown) for driving the movement of the head and the mounting head 121 attached to the beam 122, and electric power is supplied to these motors via the beam 122.

  Each mounting stage includes a component supply unit 105 on the front and rear sides, and receives components from a component cassette 106 set in the component supply unit 105.

  The set position of the component cassette 106 in the component supply unit 105 is referred to as “value on the Z axis” or “position on the Z axis (Z number)”, and the leftmost end of the component supply unit 105 is, for example, “ A serial number such as “Z1” is used.

  The board | substrate 30 is conveyed by a pair of conveyance rail 129 which exists so that two mounting stages may be penetrated. In addition, the components supplied by the component cassette are attracted to the nozzles attached to the mounting head 121 and mounted on the substrate 30 that has been transported by the transport rail 129.

  In addition, since components such as a component recognition camera originally provided in the component mounter are not the main points of the present invention, illustration and description thereof are omitted. Moreover, in this Embodiment, the other component mounting machines which the lines 1-3 have are also the same structure.

  FIG. 4 is a schematic diagram showing the positional relationship between the mounting head 121 and the component cassette 106. The mounting head 121 can be attached with a plurality of nozzles 120, for example, four nozzles can be attached.

  In this case, it is possible to simultaneously pick up components from each of up to four component cassettes 106 (by one up and down movement).

  Each nozzle 120 is supplied with a vacuum pressure generated by a vacuum pressure generation device (not shown in FIG. 4) via the mounting head 121, and the components can be adsorbed by the vacuum pressure.

  In the present embodiment, the component cassette 106 is loaded with one component reel PT. The component reel PT is a state in which a component tape storing a plurality of (for example, 10,000) one type of components is wound, and components are supplied from the component reel PT to the component mounting machine 10 via the component cassette 106. The

  FIG. 5 is a functional block diagram showing the main functional configuration of the production control device 20. The production control device 20 is a device that controls each of the lines 1 to 3 via the LAN 5 as described above. Specifically, the production of the component mounting board in each line is controlled by controlling the operation of the equipment such as the component mounting machine included in each of the lines 1 to 3. The production control device 20 is realized by, for example, a personal computer (PC).

  The production control device 20 includes a communication unit 201, a combination storage unit 207, a combination acquisition unit 206, and a production control unit 202.

  The communication unit 201 is a processing unit for exchanging information with equipment such as the component mounter 10. The combination storage unit 207 is a storage device that stores the combination information described in the description of FIG. 1. In the present embodiment, it is assumed that combination information about the unit α is stored in advance.

  The combination acquisition unit 206 is a processing unit that acquires combination information. In the present embodiment, the combination acquisition unit 206 acquires the combination information by reading from the combination storage unit 207.

  The production control unit 202 is a processing unit that performs information processing for controlling each line. Specifically, control is performed so that lines 1 to 3 are produced for each set of component mounting board groups having the type and the number of pieces shown in the combination information.

  In other words, in the present embodiment, control is performed so that two substrates A, one substrate B, and three substrates C are set as one set and the lines 1 to 3 are sequentially produced one by one.

  Hereinafter, the number of each component mounting board indicated in the combination information is referred to as “unit number”. Further, the component mounting board of the unit number is called “unit board”. For example, the unit number of the line 1 is two, and the unit number substrate is two substrates A.

  The production control unit 202 includes a production tact acquisition unit 203, a reference line identification unit 204, and a condition determination unit 205, and these processing units perform information processing for realizing the above control.

  The production tact acquisition unit 203 is a processing unit that acquires the production tact of each line. Specifically, the production tact acquisition unit 203 performs simulation calculation or actual measurement on one sheet production tact that is a time required for production of one component mounting board and a unit line tact that is a time required for production of a unit number of sheets. It can be obtained by.

  Specific examples of single-sheet production tact and unit line tact will be described later with reference to FIG.

  The reference line specifying unit 204 is a processing unit that specifies a reference line that is a line corresponding to the longest unit line tact based on the unit line tact of each line acquired by the production tact acquiring unit 203. That is, the line that takes the most time for the production of the unit number is identified as the reference line.

  The condition determination unit 205 is a processing unit that determines production conditions for each line. The production conditions are various conditions related to the production of the component mounting boards of each line.For example, the timing of loading the boards used for the production of the component mounting boards into each line, the production timing of the unit number board, and The mounting conditions such as the number of nozzles used by the component mounting machines constituting each line.

  The operation of the production system 1 configured as described above will be described with reference to FIGS.

  First, the outline | summary of the operation | movement which concerns on the control with respect to each line of the production control apparatus 20 is demonstrated using FIG.

  FIG. 6 is a flowchart showing an outline of an operation related to control of each line of the production control device 20.

  In the production control apparatus 20, the combination acquisition unit 206 acquires combination information stored in the combination storage unit 207 (S1).

  The production control unit 202 receives the combination information acquired by the combination acquisition unit 206, and controls to produce for each set of component mounting board groups indicated by the combination information (S2).

  That is, in the present embodiment, each line is controlled to produce a component mounting board in units of units α.

  Each line repeats the production of the board of the unit number of its own line according to this control, whereby the production of component mounting boards in units of units is performed as a whole of the lines 1 to 3.

  Here, as a method for realizing the production of component mounting boards in units of units, there is a method realized by controlling the timing of board loading into each line, which is one of the production conditions in each line (S2a). is there.

  For example, the number of types corresponding to the reference line shown in the combination information is N, and the number of types corresponding to the subordinate lines other than the reference line is M (M and N are integers of 1 or more). Assume a case. In this case, the loading timing is a timing at which the number of substrates loaded into the reference line and the dependent line for each longest unit line tact becomes N and M, respectively.

  In other words, in the present embodiment, the number of substrates inserted into the lines 1 to 3 for each longest unit line tact is “2”, “1”, and “3” in this order. .

  Thus, the production of the component mounting board group for one unit is completed within the longest unit line tact, and the component mounting board group for one unit is sequentially produced.

  The operation of the production control device 20 when this method is executed will be described later as a specific example 1.

  Similarly, as a method for realizing the production of a component mounting board in units of units, there is a method for realizing it by controlling the production timing of the unit number board which is one of the production conditions in each line (S2b). .

  Specifically, this is a method in which the production control device 20 confirms that all the lines have finished producing the respective unit number boards, and produces a component mounting board group for the next one unit.

  Thereby, a component mounting board group for one unit is sequentially produced.

  The operation of the production control device 20 when this method is executed will be described later as a specific example 2.

  In addition, there is a method of realizing by controlling the mounting conditions set in the component mounters constituting each line, which is one of the production conditions in each line (S2c).

  Specifically, the mounting conditions for lowering the production speed of the component mounting machine with a short unit line tact are set in the component mounting machine so that the difference between the unit line tacts of each line is less than the threshold value. The

  That is, by adjusting each component mounter so as to reduce the production speed as necessary, the unit line tacts of each line are aligned, and component mount boards for one unit are sequentially produced.

  The operation of the production control device 20 when this method is executed will be described later as a specific example 3.

  Hereinafter, the operation when the production control apparatus 20 of the embodiment performs various controls on each line will be described as a specific example, including the operation of each line that operates according to the control.

(Specific example 1)
As a specific example 1 of the operation of the production control device 20 and each line of the embodiment, the operation of the production control device 20 and each line when the production control device 20 controls the timing of loading the substrate into each line will be described. .

  As described above, the lines 1 to 3 have different types of component mounting boards to be produced, and different one-sheet production tacts.

  Therefore, in the present embodiment, it is assumed that the single-sheet production tact and the unit line tact in each line in a state before the production control device 20 performs control are the values shown in FIG.

  FIG. 7 is a diagram showing one-sheet production tact and unit line tact in each line.

  The unit line tact is a production tact required for producing a required number of component mounting boards for one set as described above, and is an example of a unit production time in the production control method of the present invention.

  In the present embodiment, one unit α corresponds to the above set, and the unit line tact of each line is obtained by “one sheet production tact × number of sheets necessary for one unit”.

  As shown in FIG. 7, the unit line tact of line 1 is the longest, and becomes shorter in the order of line 2 and line 3.

  If each line independently produces a component mounting board without any control over each line, for example, when line 1 has finished producing 100 units of board A (after 12000 sec from the start) 2 finished production of the substrate C for 114 units ([12000 sec / 105 sec] = 104.3). In line 3, the production of the substrate C for 125 units is finished ([12000 sec / 96 sec] = 125).

  That is, when the production of 100 units = 200 sheets of substrate A is completed, the calculation results for 14 units of board B = 14 pieces of intermediate stock, and for substrate C, 25 units = 75 pieces of stock. Expected to be intermediate stock.

  Therefore, the production control device 20 performs the following control for each line in order to reduce intermediate inventory.

  FIG. 8 is a flowchart showing an example of an operation flow when the production control device 20 controls the timing of loading the substrates into each line.

  The production tact acquisition unit 203 of the production control device 20 acquires the production tact in each line (S10). Specifically, the single-sheet production tact and unit line tact of each line are acquired by simulation calculation using the mounting conditions set in the component mounters constituting each line.

  Alternatively, a component mounting board is actually produced in each line, and a single-sheet production tact and a unit line tact for each line are acquired as measured values via the LAN 5.

  The reference line specifying unit 204 compares each unit line tact acquired by the production tact acquiring unit 203, and specifies a reference line that is a line corresponding to the longest unit line tact (S11).

  In the present embodiment, as shown in FIG. 7, “120 sec” is the longest unit line tact, and the reference line is specified as line 1. The lines other than the reference line are referred to as “subordinate lines” as described above. That is, in this embodiment, line 2 and line 3 are dependent lines.

  The condition determination unit 205 determines the substrate loading timing for each line (S12), and the production control unit 202 executes substrate loading for each line based on the determined loading timing (S13).

  Specifically, this input timing is (A) the timing for synchronizing the start of production for the number of units in each line, (B) the timing for placing an interval between the production operations of each component mounting board in the subordinate line, or (C) Timing for synchronizing the end of production for the number of units in each line.

  In any of these cases (A) to (C), the number of substrates inserted into each line for each longest unit line tact becomes the unit number. In other words, in the present embodiment, the number of lines 1, 2, and 3 is 2 sheets, 1 sheet, and 3 sheets in this order.

  The stocker of each line receives the instruction about the input timing, and inputs one board at a time into the adjacent component mounter according to the instruction until the predetermined number of planned productions are completed.

  FIG. 9 is a schematic diagram showing the production status of each line under the control shown in FIG.

  In addition, at the time position “0” on the time axis in each of FIGS. 9A to 9C, the production status of the component mounting boards in each line is steady, which will be described later with reference to FIG. The same is true for.

  FIG. 9A shows the production status of each line when the production start for the number of one unit is synchronized. FIG. 9B shows the production status of each line when an interval is placed between the production operations of the component mounting boards in the line 2 and the line 3 which are subordinate lines. FIG. 9C shows the production status of each line when the production end for one unit is synchronized.

  In each figure, the length of the white arrow represents the length of the single-sheet production tact.

  As shown in FIGS. 9A to 9C, in any case, two substrates A, one substrate B, and three substrates C3 are produced every 120 sec which is the longest unit line tact.

  That is, since a component mounting board group is produced for each unit, it is possible to move the component mounting boards for one unit to a production line or the like for producing a video deck. As a result, the substantial intermediate inventory number can be reduced to zero.

  In addition, as shown in FIG. 9B, when an interval is set between production operations, for example, the time interval for loading the substrate into the stocker is realized by extending it more than the loading interval for continuous production of component mounting boards. The

  Also, for example, it can be realized by stopping the conveyance of the substrate for a certain period between two adjacent component mounters. This process is a process that divides the single-sheet production tact and places an interval, and there is no change in the substantial total time, but it can also be said to be a process that extends the single-sheet production tact.

  It should be noted that the instruction of the timing of loading into the board line may be given to the component mounting machine adjacent to the stocker instead of the stocker.

  For example, the component mounter 13 may be instructed to input timing to the line 2. In this case, the component mounter 13 may instruct the stocker 22 so that the board is loaded from the stocker 22 at a timing according to the instruction.

  Or the component mounting machine 13 should just take in the board | substrate currently hold | maintained at the stocker 22 at the timing according to the said instruction | indication.

(Specific example 2)
As specific example 2 of the operation of the production control device 20 and each line of the embodiment, the operation of the production control device 20 and each line when the production control device 20 controls the timing at which each line produces the unit number substrate. Will be explained.

  The single-sheet production tact in each line is the same as the value shown in FIG.

  In the specific example 1 described above, in the production control apparatus 20, the reference line specifying unit 204 specifies the reference line based on the unit line tact in each line.

  However, the production control device 20 can also realize the production of component mounting boards in units of units by controlling the timing of producing the number of units of boards in each line without specifying the reference line.

  FIG. 10 is a flowchart showing an example of an operation flow when the production control device 20 controls the timing at which each line produces a unit number substrate.

  The production control unit 202 instructs each line to produce each unit number substrate (S20). Each line receives this instruction and starts production of the unit number substrate.

  After the production of the unit number board is started in each line, the production control unit 202 communicates with the component mounting machine existing at the most downstream side of each line to check whether the production of the unit number board is completed. For example, it is confirmed whether or not the second board A is output from the component mounting machine 12 for the line 1.

  In the present embodiment, the line 1 has the shortest unit line tact (see FIG. 7). When the line 3 first completes the production of the unit number of substrates, that is, when the production of the three substrates C is completed, the line 1 And in the line 2, the production of the unit number substrate is not completed (No in S21).

  Further, even when the line 2 completes the production of the unit number substrate, the line 1 does not complete the production of the unit number substrate (No in S21).

  Thereafter, when the production tact acquisition unit 203 confirms that the line 1 has completed the production of the unit number substrate (Yes in S21), the production tact acquisition unit 203 confirms whether the production number of the component mounting board has reached the planned number. If not reached (No in S22), the production control unit 202 instructs each line to produce the unit number substrate again, and each line that receives the instruction resumes production of the unit number substrate.

  When the production number of component mounting boards has reached the planned number (Yes in S22). Finish the production control of the component mounting board.

  In this way, the production control device 20 controls the lines 1 to 3 so that the other line produces the unit number of boards in accordance with the line with the longest unit line tact, thereby making the component mounting board for one unit. Groups will be produced sequentially. In other words, the substantial intermediate inventory number can be set to zero.

(Specific example 3)
As a specific example 3 of the operation of the production control device 20 and each line according to the embodiment, the production control device 20 in the case where the production control device 20 controls the mounting conditions set in the component mounters constituting each line, and The operation of each line will be described.

  The single-sheet production tact in each line is the same as the value shown in FIG.

  In the specific example 1 and the specific example 2 described above, as shown in FIGS. 9A to 9B, the component mounting board is not produced in a line other than the line having the longest unit line tact. There will be time.

  For example, the unit line tact in line 2 is 105 sec (see FIG. 7). In the production status shown in each of FIGS. 9A to 9B, in line 2, the non-operation time of 15 sec is set to 120 sec. There is.

  The unit line tact for line 3 is 96 sec. Similarly, there is a non-operation time of 24 sec during 120 sec.

  Therefore, it is conceivable to extend each unit line tact by changing the mounting conditions of at least one component mounting machine in each of line 2 and line 3 so as to minimize these non-operating times.

  Here, extending the unit line tact is realized by lowering the production speed, for example, by reducing the number of nozzles used as a mounting condition. In addition, reducing the number of nozzles used has the effect of reducing the amount of energy consumed for generating vacuum pressure for component suction, for example.

  In addition, the production speed can be reduced by reducing the number of component divisions, which is one of the mounting conditions. The “part division number” refers to the number of parts storing members of the same type that store a plurality of parts of the same type.

  In the present embodiment, the production speed of the component mounting machine can be reduced by reducing the number of sets of component cassettes 106 storing the same type of components, that is, the number of sets of component reels PT.

  This is because the number of components taken out from the component reel PT in one task is reduced. The “task” is implemented by one operation (suction / movement / mounting) in a series of operations of picking / moving / mounting parts by the mounting head 121, or such a single operation. Refers to a group of parts.

  Thus, reducing the number of parts divided means reducing the number of parts prepared in advance and the necessary number of part reels PT, which has the effect of reducing the number of parts in stock.

  As described above, if necessary, the production of the two board A, the board B1, and the board C3, which are a set of component mounting boards, can be synchronized by changing the mounting conditions and extending the unit line tact. At the same time, the effect of saving energy or reducing the number of parts in stock will be exhibited.

  Further, even if the unit line tacts of line 2 and line 3 are extended in the present embodiment, as long as the longest unit line tact is within 120 seconds, two substrates A, one substrate B, and There is no change in the production of three C boards, and the production efficiency of these component mounting board groups does not drop.

  FIG. 11 is a flowchart showing an example of an operation flow when the production control apparatus 20 controls the mounting conditions of the component mounting machine.

  The production tact acquisition unit 203 of the production control device 20 acquires the production tact in each line by simulation calculation or as an actual measurement value (S30).

  The reference line specifying unit 204 compares each unit line tact acquired by the production tact acquiring unit 203 and specifies a reference line (S31). Up to this point, the contents are the same as those described in the description of FIG. 8 (S10 and S11).

  The condition determining unit 205 determines the board loading timing for each line. Specifically, as shown in FIG. 9A, the input timing is determined so as to synchronize the start of production for the number of units in each line (S32).

  The production control unit 202 executes board loading for each line based on the determined loading timing (S33). Thereby, the production of the component mounting board is started in each line.

  After the start of production, the production tact acquisition unit 203 communicates with the component mounters of each line and acquires the unit line tact of each line. Further, the difference between the unit line tact of the reference line and the unit line tact of the subordinate line is calculated (S34).

  When this difference exceeds the threshold value (Yes in S35), the condition determining unit 205 determines a mounting condition for reducing the production speed of the component mounting machine constituting the subordinate line, and the production control unit 202 determines the component mounting machine. By setting the mounting conditions determined in step S36, the component mounting machine is changed to the mounting conditions (S36).

  In the present embodiment, it is assumed that the threshold is, for example, 5 seconds. Further, the reference line is line 1 and the difference between unit line tacts with line 2 which is a subordinate line is 120−105 = 15 sec (see FIG. 7), which exceeds the threshold value.

  Therefore, the production control unit 202 sets a mounting condition in the component mounter that lowers the production speed of at least one of the component mounters 13 and the component mounters 14 included in the line 2.

  The difference between unit line tacts of line 1 and line 3 is 120−96 = 24 seconds, which exceeds the threshold value. Therefore, the production control unit 202 sets a mounting condition for the component mounter that lowers the production speed of at least one of the component mounters 15 to 18 included in the line 3.

  After finishing the mounting condition changing process, the production control device 20 repeats the mounting condition changing process until the difference between the unit line tacts does not exceed the threshold (No in S35).

  When the difference between the unit line tact of each of the lines 2 and 3 and the unit line tact of the line 1 is equal to or less than a predetermined threshold due to the above operation flow, the two substrates A, B1 and C3 The sheets will be produced almost synchronously. That is, the occurrence of intermediate stock can be suppressed.

  FIG. 12 is a flowchart illustrating an example of an operation flow related to the mounting condition changing process of the production control apparatus 20.

  When determining the mounting conditions, the condition determining unit 205 determines whether to mainly determine energy saving or to reduce the number of parts stock. That is, it is determined whether to give priority to energy saving or reduction of the number of parts stock (S40).

  Here, which is prioritized is, for example, set in the production control device 20 by an operator who operates the production control device 20 in advance or by a predetermined means as necessary, and in accordance with this setting, the condition determining unit 205 selects.

  Or, for example, when the power consumption of the entire production system 1 exceeds the specified value, priority is given to energy saving, and when the number of parts inventory of the entire production system 1 exceeds the specified value, priority is given to reducing the number of parts inventory. It is good.

  In this case, the power consumption amount and the parts inventory quantity may be acquired by communicating with equipment such as a component mounter via the LAN 5 or may be acquired by inputting from an operator.

  When energy saving is selected (energy saving in S40), the condition determination unit 205 determines the degree of energy saving based on the power consumption after the change processing in the component mounter that is the target of the change processing for the three types of mounting condition change processing. Is calculated (S41). Furthermore, the change process with the highest degree of energy saving is selected and executed (S42).

  Specifically, the three types of mounting condition changing processes are (a) mounting conditions for reducing the number of beams used by the component mounting machine, and (b) mounting for reducing the acceleration of the mounting head of the component mounting machine. One of the three mounting conditions of the condition and (c) the mounting condition for reducing the number of nozzles used by the component mounting machine is set to the target component mounting machine.

  In addition, when the condition determination unit 205 selects reduction of the number of parts in stock (reduction of parts inventory in S40), the condition determination unit 205 reduces the number of parts divided, which is one of the mounting conditions, for the mounter that is the target of the change process. The process is executed (S43).

These various mounting conditions will be described with reference to FIGS. 13 and 14.
FIG. 13 is a schematic diagram showing the contents of the mounting conditions for reducing the production speed of the component mounting machine to save energy.

  For example, in order to bring the unit line tact of line 2 close to 120 sec, which is the unit line tact of line 1, it is assumed that the use of one beam 122 of the component mounter 13 is stopped as shown in FIG. . The component mounter 13 is assumed to have the same configuration as the component mounter 10 described with reference to FIGS.

  In this case, the use of the mounting head 121 held by the beam 122 whose use has been stopped is stopped, and the production speed of the component mounter 13 is reduced. Furthermore, the power consumption related to the driving of the beam 122 and the mounting head 121 is reduced.

  Further, as shown in FIG. 13B, it is assumed that the acceleration in the X-axis direction and the Y-axis direction of one mounting head 121 included in the component mounter 13 is reduced.

  In this case, since the time required to move the mounting head 121 increases, the production speed of the component mounting machine 13 decreases. Furthermore, since the force required to move the mounting head 121 is reduced, the power consumption associated with the movement of the mounting head 121 is reduced.

  Further, as shown in FIG. 13C, a case is assumed in which the number of nozzles 120 used in one mounting head 121 included in the component mounter 13 is reduced from eight to four, for example.

  In this case, the number of parts that can be picked up by the mounting head 121 in a single picking operation decreases, and the production speed of the component mounting machine 13 decreases. Furthermore, since the number of nozzles 120 to which the vacuum pressure generator 120a should supply the vacuum pressure is reduced, the power consumption associated with the operation of the vacuum pressure generator 120a is reduced.

  The condition determination unit 205 calculates how much the power consumption is reduced for each of these three situations.

  For example, the condition determination unit 205 includes information indicating the relationship between the number of operation stop of the beam 122, the approximate amount of production tact per board, and the approximate amount of power reduction for each component mounting machine. Have.

  In addition, there is information indicating the relationship between the reduction amount of the acceleration of the mounting head 121, the approximate extension amount of the production tact per substrate, and the approximate reduction power amount.

  Furthermore, information indicating the relationship between the number of nozzles 120 to be stopped to use, the approximate amount of production tact per substrate, and the approximate amount of reduced power is included.

  These pieces of information may be acquired by communicating with each component mounter via the LAN 5 or may be acquired by being input from an operator.

  The condition determining unit 205 refers to these pieces of information to increase the production tact per one board of the component mounting machine 13 and the unit line tact of the line 2 is within 120 sec that is the unit line tact of the line 1 The number of operation stops 122, the reduction amount of acceleration of the mounting head 121, and the number of use stop of the nozzle 120 are obtained.

  Specifically, since the unit number of the line 2 is one and the difference between the unit line tact between the line 2 and the line 1 is 15 sec, the production tact per one board in the component mounter 13 is increased. The number of operation stoppages of the beam 122 whose amount is within 15 seconds is obtained.

  Further, among these three types of change processing, the one with the largest amount of power reduction is selected as the one with the highest degree of energy saving.

  For example, when setting the number of suspension of use of the beam 122 to 1 gives the highest level of energy saving, the condition determination unit 205 includes contents such as “number of beams used = 3” or “number of suspension beams used = 1”. The mounting conditions are determined, and the determined mounting conditions are set in the component mounting machine 13 by the production control unit 202.

  FIG. 14 is a schematic diagram for explaining that the number of parts in stock is reduced by reducing the number of parts divided.

  The number of component divisions is the number of the same type of component reels PT set in the component mounter.

  For example, when the number of divisions of the component P is 4 in the component mounter 13, four component reels PT storing the component P are set in the component mounter 13, as shown in FIG.

  The component reel PT stores, for example, 10,000 components P in the initial state, and each time the component P is picked up by the component mounter 13, the number of stored components Pa is one. Decreases gradually.

  Similarly, when the number of divisions of the component P is 2, two component reels PT storing the component P are set in the component mounter 13.

  Here, it is assumed that the component mounter 13 produces 200 substrates on which 100 components P are mounted per substrate. That is, a case is assumed where the consumption amount of the parts P is 20000. Further, it is assumed that the mounting head 121 is provided with four nozzles 120 for sucking the component P.

  In such a case, if the number of divisions of the component P is 4, the four nozzles 120 move up and down only once at the same time, thereby simultaneously adsorbing the component P. Then, the mounting head 121 moves to the position where the substrate exists, and sequentially mounts the four components P sucked by the nozzles 120 onto the substrate.

  That is, one component P is taken out from each of the four component reels PT in one task and mounted on the board. Thus, every time one component mounting board is produced, 25 components Pa are consumed from each component reel PT with the Z numbers “Z1”, “Z2”, “Z3”, and “Z4”. .

  Therefore, after the production of 200 of the component mounting boards, four component reels PT each having 5000 components left are left. That is, a total of 20000 parts P are in stock and four used part reels PT are generated.

  When the number of divisions of the component P is 2, two of the four nozzles 120 simultaneously move up and down, so that the component P is sucked from the component reels PT with the Z numbers “Z2” and “Z3” at the same time. To do.

  Thereafter, the mounting head 121 moves so that the remaining two nozzles 120 reach the component suction positions of the component reels PT with the Z numbers “Z2” and “Z3”. Similarly to the above, the remaining two nozzles 120 move up and down at the same time, so that the component P is sucked simultaneously from the component reels PT with the Z numbers “Z2” and “Z3”.

  Further, the mounting head 121 moves to a position where the substrate exists, and sequentially mounts the four components P sucked by the nozzles 120 on the substrate. That is, two components Pa are each taken out from the two component reels PT in one task and mounted on the board. Thus, every time one component mounting board is produced, 50 components P are consumed from the component reels PT with the Z numbers “Z2” and “Z3”.

  Thus, when the number of component divisions is 2, a total of four components P are picked up in two tasks. Therefore, compared with the case where the number of component divisions is 4, the production tact per board becomes longer.

  However, when the number of component divisions is 2, after the production of 200 component mounting boards, the remaining number of components in each of the two component reels PT becomes 0, and at the same time, the component reels PT that are used are not generated. .

  In this way, reducing the number of parts divided leads to a reduction in the number of parts in stock, and further, depending on the number of parts consumed, the number of used part reels PT can be reduced.

  In this embodiment, for example, when the production of a video deck that requires the substrate A, the substrate B, and the substrate C is stopped, or when there is a design change and the substrate B becomes unnecessary, the production of the substrate B is performed. It is conceivable that the part P used for the above is not necessary. Therefore, it is economically important to reduce the number of parts in stock of parts P as much as possible.

  Further, when there is a component reel PT that is in use, for example, when the component reel PT is used for the subsequent production of a component mounting board, it is stored in the component reel PT during the production of the required number of sheets. There is a high possibility that the part P is lost.

  In other words, there is a high possibility that an operation for exchanging with a new component reel PT will occur during production.

  Also, for example, assume that 5000 parts are invented for a certain part. In this case, when there is one part tape PT with 5000 parts left and when there are 10 part tapes PT with 500 parts left, the one with 10 part tapes PT exists However, it will consume more storage space. In addition, the load related to the management of parts inventory is also increased.

  Therefore, it is important from the viewpoint of production efficiency and the like to reduce the number of used part reels PT as much as possible.

  The condition determining unit 205 has information indicating the relationship between the number of component divisions and the approximate amount of production tact per board for each component mounter, for example.

  This information may be acquired by communicating with each component mounter via the LAN 5 or may be acquired by inputting from an operator.

  The condition determining unit 205 refers to this information to determine the component division number as a mounting condition. The determined mounting conditions are set in the component mounting machine 13.

  The production control device 20 performs the mounting condition changing process as described above for the component mounting machines in the line 2 and the line 3 that are the subordinate lines. Even after this processing is performed, if the difference between the unit line tact of the subordinate line and the unit line tact of the reference line exceeds the threshold value, the mounting condition of the same component mounter or different component mounter is further determined. Perform the change process.

  For example, as described above, the difference between the unit line tact of the line 2 and the unit line tact of the reference line exceeds the threshold even after the component mounter 13 is processed to reduce the number of used beams by one. Assume a case.

  In this case, for example, the mounting condition changing process such as further reducing the number of beams used by the component mounting machine 13 or halving the number of component divisions is performed. Alternatively, a mounting condition changing process such as further reducing the number of used beams by one or halving the number of component divisions is performed on the component mounter 14 that is also the component mounter on line 2.

  Further, the same process as the mounting condition change process performed on the component mounter on line 2 is performed on at least one of the component mounters 15 to 18 on line 3.

  By such an operation, it is possible to align the unit line tact of line 2 and line 3 with the unit line tact of line 1.

  FIG. 15 is a diagram illustrating an example of the unit line tact before and after the mounting condition changing process.

  As shown in the upper part of FIG. 15, before taking the measure of the mounting condition changing process, the single-sheet production tact and the unit line tact in each line are the same as the values shown in FIG. In other words, the variation of each unit line tact is present to the extent that it cannot be ignored from the viewpoint of the number of intermediate stocks.

  However, by taking the above measures, as shown in the lower part of FIG. 15, for example, it is possible to set the one-sheet production tact of line 2 to “120 sec”, that is, to set the unit line tact to “120 sec” which is the same as that of line 1. Is possible.

  Similarly, for the line 3, it is possible to set the single-sheet production tact to “40 sec”, that is, the unit line tact can be set to “120 sec” which is the same as the line 1.

  Thus, when the unit line tacts in line 1 to line 3 are aligned, the production of the unit number of component mounting boards in each line is synchronized as shown in FIG.

  FIG. 16 is a schematic diagram showing the production status in each line when the unit line tacts of line 1 to line 3 are aligned.

  As shown in the upper part of FIG. 16, even before taking the above-mentioned measures, as described in the description of the specific example 1, by controlling the timing of loading the substrate into each line, the substrate is set every 120 seconds. It is possible to produce two sheets A, one board B, and three boards C3. That is, it is possible to make the intermediate inventory substantially zero.

  However, in the line 2 and the line 3, there is a non-operation time (represented by a dotted arrow in the figure), which consumes power wastefully and may have a large part inventory. It is generated.

  Therefore, as a measure for reducing the non-working time as much as possible, by performing the mounting condition changing process described with reference to FIGS. 13 and 14, unit lines of line 1 to line 3 as shown in FIG. It is possible to align the tact.

  As a result, as shown in the lower part of FIG. 16, the non-operating time is eliminated in line 2 and line 3, two substrates A, one substrate B, and three substrates C are produced synchronously, and energy saving in the production system 1 Alternatively, it is possible to reduce the number of parts in stock.

  In the description of FIG. 12, it is assumed that one of the three types of mounting condition changing processes is selected and executed. However, a plurality of processes among these three types of processes may be executed in combination.

  For example, in order to extend the unit line tact of line 2, the component mounter 13 may be simultaneously subjected to processing for reducing the number of beams used and processing for reducing the moving acceleration of the mounting head 121.

  Further, such mounting condition change processing may be performed on a plurality of component mounters.

  For example, in order to extend the unit line tact of line 2, a mounting condition change process may be performed on the component mounter 13 and the component mounter 14.

  Further, in the present embodiment, it is assumed that line 1 produces substrate A, line 2 produces substrate B, and line 3 produces substrate B. It is desirable that the combination of these lines and the type of component mounting board produced on the line is determined based on the good production efficiency.

  Specifically, there are nine combinations of lines 1 to 3 and substrates A to C. In each combination, the longest unit line tact is extracted. For example, in the combination in this embodiment, it is “120 sec” as shown in FIG.

  Of the unit line tacts extracted in this way, the combination with the shortest unit line tact is the combination with the best production efficiency.

  That is, regardless of the combination, the time required to produce one set of component mounting board groups depends on the longest unit line tact. Therefore, the combination with the shortest unit line tact becomes the combination with the best production efficiency.

  In the present embodiment, as shown in FIG. 1, each line has two or more component mounters. However, if the number of component mounters on each line is one or more, Good. Also, the types of component mounting machines may be different from each other.

  That is, it is only necessary to determine the number and types of facilities constituting the line according to the types of component mounting boards to be produced.

  Further, the combination information may not be stored in the combination information storage unit 207, and the combination acquisition unit 206 may acquire it from another device via the LAN 5 or a recording medium, for example. Further, for example, combination information input from an operator who operates the production control device 20 may be acquired.

  The present invention can be used as a production control method for controlling a plurality of production lines for producing a plurality of types of component mounting boards. In particular, when a predetermined type and number of component mounting boards are incorporated into a device as a set, the application of the present invention results in the sequential production of the set, thereby suppressing the occurrence of intermediate inventory. it can. That is, various burdens such as costs related to the intermediate inventory are reduced and useful.

FIG. 1 is a schematic diagram showing an outline of a hardware configuration of a production system in the embodiment. It is a perspective view which shows the external appearance of the component mounting machine with which a production system is provided. It is a top view which shows the main structures inside the component mounting machine in embodiment. It is a schematic diagram which shows the positional relationship of the mounting head with which a component mounting machine is equipped, and a component cassette. It is a functional block diagram which shows the main function structures of the production control apparatus in embodiment. It is a flowchart which shows the outline | summary of the operation | movement which concerns on the control with respect to each line of a production control apparatus. It is a figure which shows 1 sheet production tact and unit line tact in each line. It is a flowchart which shows an example of the flow of operation | movement when a production control apparatus controls the injection | throwing-in timing of the board | substrate to each line. It is a schematic diagram which shows the production situation of each line under the control shown in FIG. It is a flowchart which shows an example of the flow of operation | movement at the time of a production control apparatus controlling the timing which each line produces a unit number board | substrate. It is a flowchart which shows an example of the flow of operation when a production control apparatus controls the mounting conditions of a component mounting machine. It is a flowchart which shows an example of the flow of the operation | movement which concerns on the mounting condition change process of a production control apparatus. It is a schematic diagram which shows the content of the mounting conditions which reduce the production speed of a component mounting machine and aim at energy saving. It is a schematic diagram for demonstrating that the number of parts inventory is reduced by reducing the number of parts division. It is a figure which shows an example of the unit line tact before and after performing the change process of mounting conditions. It is a schematic diagram which shows the production condition in each line when the unit line tact of each line is arranged. It is a figure which shows an example of transition of the intermediate stock in the case of producing a plurality of types of component mounting boards in one conventional line. It is a figure which shows an example of transition of the intermediate stock in the case of producing a plurality of types of component mounting boards on a plurality of conventional lines.

Explanation of symbols

1 Production system 1, 2, 3 Production line 5 LAN
10, 11, 12, 13, 14, 14, 15, 16, 17, 18 Component mounter 20 Production control device 21, 22, 23 Stocker 101 Loading port 102 Mounting stage 103 Mounting stage 105 Component supply unit 106 Component cassette 120 Nozzle 120a Vacuum pressure generator 121 Mounting head 122 Beam 129 Transport rail 201 Communication unit 202 Production control unit 203 Production tact acquisition unit 204 Reference line identification unit 205 Condition determination unit 206 Combination acquisition unit 207 Combination storage unit

Claims (13)

A production control method for controlling a plurality of production lines for producing a plurality of types of component mounting boards provided in a device in parallel,
Each of the plurality of production lines is for producing one type of component mounting board among the plurality of types.
The production control method includes:
A combination acquisition step of acquiring combination information indicating a type of each of a set of component mounting boards provided in one device and the number of the respective types of component mounting boards;
A control step of controlling the plurality of production lines so as to cause the plurality of production lines to produce each set of component mounting board groups of the type and number of sheets indicated in the acquired combination information. . The control step includes
A production time acquisition step of acquiring a unit production time required to produce a unit board that is a component mounting board of the type and number corresponding to each production line, each of which is indicated in the combination information. When,
A specific step of identifying a reference line that is a production line corresponding to the longest unit production time among a plurality of acquired unit production times;
While the identified reference line is producing the component mounting board of the unit board of the own line, the subordinate line that is a production line other than the reference line finishes the production of the unit board of the own line. Determining a production condition for the plurality of production lines,
The production control method according to claim 1, wherein the determined production conditions are given to one or more production lines to cause the plurality of production lines to produce each set of component mounting board groups. The number of types corresponding to the reference line indicated in the combination information is N (N is an integer equal to or greater than 1), and the number of types corresponding to the subordinate line is M (M is an integer equal to or greater than 1). Yes,
In the determination step, as the production conditions, determine the timing of loading a substrate into each of the plurality of production lines,
The production control method according to claim 2, wherein the loading timing is a timing at which the number of substrates loaded into the reference line and the subordinate line becomes N and M, respectively, for each longest unit production time. The production time acquisition step includes a calculation step of calculating a difference between a unit production time of the reference line and a unit production time of the subordinate line,
In the determining step, when the calculated difference exceeds a threshold value, the mounting condition of the component mounting machine constituting the dependent line is determined as the production condition,
In the control step, the determined mounting condition is set in the component mounting machine,
The mounting condition is that the unit production time of the subordinate line is within the longest unit production time, and the difference between the unit production time of the subordinate line and the longest unit production time is equal to or less than the threshold value. The production control method according to claim 2, wherein the production conditions are mounting conditions for reducing a production speed of a component mounting board of the component mounting machine. The component mounter has a plurality of beams that movably hold a mounting head for mounting a component on a substrate,
The production control method according to claim 4, wherein the mounting condition is a mounting condition for reducing the number of beams used for production of a component mounting board in the component mounting machine. The production control method according to claim 4, wherein the mounting condition is a mounting condition for reducing a moving acceleration of a mounting head that mounts a component on a board, which the component mounter has. The component mounter has a mounting head capable of attaching a plurality of nozzles for sucking components and mounting them on a substrate
The production control method according to claim 4, wherein the mounting condition is a mounting condition for reducing the number of nozzles used for production of a component mounting board. The production control method according to claim 4, wherein the mounting condition is a mounting condition for reducing the number of divisions, which is the number of component storage members of the same type that store a plurality of components of the same type. The control step includes
For each of the plurality of production lines, the method includes a confirmation step of confirming whether or not the production of the unit number board, which is the component mounting board of the type and the number corresponding to each production line, indicated in the combination information is completed. ,
After instructing the production of each unit number substrate for each of the plurality of production lines, in the confirmation step, when it is confirmed that all of the plurality of production lines have completed the production of unit number substrates, The production control method according to claim 1, wherein a plurality of production lines are instructed again to produce each unit number substrate. A production control device for controlling a plurality of production lines for producing in parallel a plurality of types of component mounting boards provided in equipment,
Each of the plurality of production lines is for producing one type of component mounting board among the plurality of types.
The production control device
A combination acquisition means for acquiring combination information indicating a type of each of a set of component mounting boards provided in one of the devices and the number of pieces of each type;
A control unit for controlling the plurality of production lines so as to cause the plurality of production lines to be produced for each set of component mounting board groups having the type and number of sheets indicated in the acquired combination information. . A component mounting method for mounting a component on a board,
The component mounting method which mounts components on a board | substrate in the production line which operate | moves under control by the production control method of any one of Claims 1-9. A component mounter constituting the production line according to any one of claims 1 to 9,
A component mounter that mounts components on a board under the control of the production control method. A program for controlling a plurality of production lines for producing a plurality of types of component mounting boards provided in a device in parallel,
Each of the plurality of production lines is for producing one type of component mounting board among the plurality of types.
The program is
A combination acquisition step of acquiring combination information indicating a type of each of a set of component mounting boards provided in one device and the number of the respective types of component mounting boards;
And a control step of controlling the plurality of production lines so that the plurality of production lines are produced for each set of component mounting board groups having the type and number of sheets indicated in the acquired combination information.

Images