Patent Publication Number: US-2016231727-A1

Title: Setup change work instruction method

Description:
CROSS REFERENCE TO RELATED APPLICATION 
     This application is based on Japanese Patent Application (No. 2015-022052) filed on Feb. 6, 2015, the contents of which are incorporated herein by reference. 
     BACKGROUND 
     1. Technical Field 
     The present invention relates to a setup change work instruction method which is performed in order to change over a product type in a component mounting system. 
     2. Description of the Related Art 
     When different types of substrates are produced continuously in production activity using a component mounting apparatus, so-called setup change work is performed. That is, after substrates of one type have been produced, currently allocated feeders are replaced by feeders corresponding to components required for producing substrates of another type to be produced next. One form of such setup change work includes so-called offline setup work in which feeders required for producing substrates in and after the next production are allocated in carts which have been detached from the apparatus separately from the cart which is currently attached to the apparatus in production. In order to improve work efficiency in the setup change work performed so far, for example, a cart as a target of the setup change work is indicated to a worker and the worker is informed of components which should be replaced (e.g. see JP-A-2005-216965). 
     However, the related method disclosed in the example of JP-A-2005-216965 has the following problem in achieving improvement of the work efficiency in a real production site. That is, in the related art technique, instructions of individual works such as the indication of the cart as a target of the setup change work and the information about the components which should be replaced can be indeed given. However, there is no disclosure about a method for executing the setup change work efficiently and easily in a production site in which a plurality of works different in work contents or execution times are required to be executed continuously. Therefore, an effective remedial measure has been desired. 
     SUMMARY 
     Therefore, an object of the invention is to provide a setup change work instruction method in which setup change work for changing over a product type can be executed efficiently and easily. 
     The setup change work instruction method according to the invention is a setup change work instruction method for giving an instruction to a worker to perform setup change work on a component mounting apparatus in order to change over a product type, the component mounting apparatus being comprising a component feeding portion which can be attached to or detached from the component mounting apparatus and in which a plurality of parts feeders can be allocated, the method including: acquiring information about allocation states of the parts feeders in the component feeding portion which is currently attached to the component mounting apparatus and information about allocation states of the parts feeders in a component feeding portion which has been detached from the component mounting apparatus; deriving work instruction information which defines required setup change work so that allocation states of parts feeders in one of the component feeding portions as a target of the setup change work are changed over from allocation states in which the setup change work has not been started yet to first allocation states corresponding to a first product type in order to be adapted to an event in which the product type is changed over to the first product type; and displaying the derived work instruction information on a display screen; wherein the work instruction information includes a plurality of unit work information pieces, and the plurality of unit work information pieces are displayed on the display screen in the displaying step so that the unit work information pieces are arranged in accordance with a work sequence order with which the unit work information pieces are executed. 
     According to the invention, it is possible to efficiently and easily execute setup change work in order to change over a product type. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is an explanatory view of the configuration of a component mounting system according to an embodiment of the invention. 
         FIG. 2  is a plan view of a component mounting apparatus in the component mounting system according to the embodiment of the invention. 
         FIGS. 3A and 3B  are explanatory views of the configuration of a component feeding portion and the configuration of a tape feeder in the component mounting apparatus according to the embodiment of the invention. 
         FIG. 4  is a block diagram showing the configuration of a control system of the component mounting system according to the embodiment of the invention. 
         FIG. 5  is an explanatory view of work instruction information used in instruction of setup change work in the component mounting system according to the embodiment of the invention. 
         FIG. 6  is a flow chart of work instruction processing of the setup change work in the component mounting system according to the embodiment of the invention. 
     
    
    
     DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS 
     An embodiment of the invention will be described with reference to the drawings. First, the configuration of a component mounting system  1  will be described with reference to  FIG. 1 . The component mounting system  1  has a function of mounting components on substrates to produce mounted substrates. The component mounting system  1  mainly includes an upper system  2 , an offline setup area  3 , and a component mounting line  4 . The sections are connected to one another through a network  5 . The upper system  2  includes a management computer to manage production data or production schedules used in the component mounting system  1 . 
     Further, the component mounting system  1  includes a component warehouse  6 . A component placement shelf  7  for keeping feed reels  24  (see  FIGS. 3A and 3B ) from which components can be fed to be mounted on substrates, or tape feeders  15  in which the feed reels  24  are set is disposed in the component warehouse  6 . The component placement shelf  7  is classified into a plurality of placement sections for storing the feed reels  24  or the tape feeders  15 . The placement sections are given shelf identification codes ( 7   a ,  7   b ,  7   c , . . . ) for specifying the respective placement sections individually. 
     The component mounting line  4  includes a substrate supplying apparatus M 1 , a substrate delivering apparatus M 2 , a solder printing apparatus M 3 , component mounting apparatuses M 4  and M 5 , a reflow apparatus M 6 , and a substrate collecting apparatus M 7 . The substrate supplying apparatus M 1  to the substrate collecting apparatus M 7  are connected to the upper system  2  through the network  5 . Feed reels  24  taken out of the component warehouse  6  are conveyed to the offline setup area  3 . Offline setup change work for setting feed reels  24  together with tape feeders  15  in carts  9  (see  FIG. 2  and  FIGS. 3A and 3B ) in allocation states corresponding to a target product type is performed in the offline setup area  3 . Incidentally, the carts  9  set as targets of the offline setup work in the offline setup area  3  will be described here as carts  9 * so that the carts  9 * can be distinguished from other spare carts  9  (carts  9 A,  9 B, . . . ) kept in the offline setup area  3 . 
     The carts  9 , which has been subjected to the offline setup work and in which the tape feeders  15  and the feed reels  24  have been set in the allocation states corresponding to the product type, are moved to the component mounting line  4  and attached to the component mounting apparatuses M 4  and M 5 . In the component mounting line  4 , components are mounted on bare substrates by the component mounting apparatuses M 4  and M 5 . The bare substrates are supplied by the substrate supplying apparatus M 1 . Next, the substrates which have been mounted with the components are sent to the reflow apparatus M 6  in which the mounted components are joined to the substrates by solder. The mounted substrates on which the components have been mounted by solder joining are collected by the substrate collecting apparatus M 7 . 
     The offline setup area  3  includes a setup change work supporting apparatus  8  for supporting the offline setup change work, and a temporary component placement shelf  10 . Feed reels  24  and tape feeders  15  which have been removed from the component mounting apparatuses M 4  and M 5  and can be reused are temporarily placed on the temporary component placement shelf  10 . The setup change work supporting apparatus  8  is a terminal machine such as a personal computer, having an arithmetic processing function, an input/output operation function and a display function. A worker who executes the offline setup change work executes the offline setup change work on the carts  9  in accordance with work instruction information displayed on a display screen of the setup change work supporting apparatus  8 , before the carts  9  are moved to the component mounting line  4 . 
     In an example shown here, a scheduled cart  9  by which a cart  9 ( 1 ) illustrated in  FIG. 2  will be replaced is assumed as a cart  9 * as a work target of the offline setup change work. In the offline setup change work, movement or replacement of tape feeders  15  is performed on all the carts  9  existing on the production floor, including not only the spare carts  9  (carts  9 A,  9 B, . . . ) kept in the offline setup area  3  but also the carts  9  which have already been mounted in the component mounting apparatuses M 4  and M 5  of the component mounting line  4 . 
     Next, the configuration and function of each of the component mounting apparatuses M 4  and M 5  performing component mounting work in the component mounting line  4  will be described below with reference to  FIG. 2  and  FIGS. 3A and 3B . In  FIG. 2 , a substrate conveyance mechanism  12  is disposed in an X direction on a pedestal  11 . The substrate conveyance mechanism  12  uses a conveyor to convey a substrate  13  on which components will be mounted, and positions the substrate  13  in a mounting work position provided on the substrate conveyance mechanism  12 . 
     A cart mounting portion  14 ( 1 ) is provided in front of the substrate conveyance mechanism  12 . A cart mounting portion  14 ( 2 ) is provided at the rear of the substrate conveyance mechanism  12 . Carts  9 ( 1 ) and  9 ( 2 ) serving as component feeding portions in which a plurality of parts feeders for feeding components have been set are mounted in the cart mounting portions  14 ( 1 ) and  14 ( 2 ) so that the carts  9 ( 1 ) and  9 ( 2 ) can be detachably attached to the component mounting apparatuses M 4  and M 5 . 
     Feeder addresses  14   a  for specifying mounting positions of these parts feeders have been set on a feeder base  23  (see  FIGS. 3A and 3B ) provided in each of the carts  9 ( 1 ) and  9 ( 2 ). In the example illustrated in the embodiment, 1-1L/R, 1-2L/R, 1-3L/R . . . are set as the feeder addresses  14   a  in the cart  9 ( 1 ) mounted in the cart mounting portion  14 ( 1 ), in the named order from a downstream side (right side in  FIG. 2 ) toward an upstream side. When these feeder addresses  14   a  are designated thus, the parts feeders mounted on the component mounting apparatus can be specified individually. 
     Similarly, 2-1L/R, 2-2L/R, 2-3L/R . . . are set as the feeder addresses  14   a  in the cart  9 ( 2 ) mounted in the cart mounting portion  14 ( 2 ), in the named order from the downstream side (right side in  FIG. 2 ) toward the upstream side. Incidentally, any method for setting the sequence in the feeder addresses  14   a  may be used. The address sequence of each of the cart mounting portions  14 ( 1 ) and  14 ( 2 ) may be set reversely. 
     An example in which the tape feeders  15  each having a function of pitch feeding of a carrier tape holding components to be mounted have been mounted as the parts feeders is illustrated here. When the tape feeders  15  are driven, components are fed to component suction positions where the components can be sucked by suction nozzles  19   a  (see  FIG. 3B ) of a mounting head  19  which will be described as follows. 
     A Y-axis movement table  17  provided with a linear driving mechanism is disposed on one side end portion in the X direction in an upper surface of the pedestal  11 . Two X-axis movement tables  18  each provided with a linear driving mechanism similarly are connected to the Y-axis movement table  17  so as to be moveable in the Y direction. A mounting head  19  is mounted on each of the two X-axis movement tables  18  to be moveable in the X direction. The mounting head  19  is a multiple head provided with a plurality of holding heads. A suction nozzle  19   a  which can suck and hold a component and lift up/down the component individually is mounted in a lower end portion of each of the holding heads. 
     The Y-axis movement table  17  and the X-axis movement tables  18  are driven to move the mounting heads  19  in the X direction and the Y direction. Thus, the two mounting heads  19  use the suction nozzles  19   a  to extract components from the component suction positions of the tape feeders  15  in the corresponding cart mounting portions  14 ( 1 ) and  14 ( 2 ), and transfer and mount the extracted components on mounting points of the substrate  13  positioned by the substrate conveyance mechanism  12 . The Y-axis movement table  17 , the X-axis movement table  18  and the mounting head  19  constitute a component mounting mechanism  20  in which the mounting head  19  having held components is moved to extract the components from the cart mounting portion  14 ( 1 ),  14 ( 2 ) and transfer and place the components on the substrate  13 . 
     Component recognition cameras  16  are disposed between the cart mounting portions  14 ( 1 ) and  14 ( 2 ) and the substrate conveyance mechanism  12 . When the mounting heads  19  which have extracted the components from the cart mounting portions  14 ( 1 ) and  14 ( 2 ) are moved above the component recognition cameras  16 , the component recognition cameras  16  image and recognize the components held by the mounting heads  19 . Substrate recognition cameras  21  which are positioned on lower surface sides of the X-axis movement tables  18  and move integrally with the mounting heads  19  are mounted on the mounting heads  19  respectively. When the mounting heads  19  move, the substrate recognition cameras  21  move above the substrate  13  which has been positioned by the substrate conveyance mechanism  12 , and image and recognize the substrate  13 . In a component mounting operation performed by the mounting heads  19  on the substrate  13 , placement positions are corrected while results of the component recognition performed by the component recognition cameras  16  and results of the substrate recognition performed by the substrate recognition cameras  21  are taken into consideration. 
       FIG. 3A  illustrates the component mounting portions  14 ( 1 ) and  14 ( 2 ) and an apparatus operating face in the component mounting apparatus M 4 , M 5 . Carts  9  in which a plurality of tape feeders  15  have been set in advance on the feeder bases  23  are mounted in the cart mounting portions  14 ( 1 ) and  14 ( 2 ). A plurality of feed reels  24  in which carrier tapes  25  having held components are accommodated in a wound state are retained in each of the carts  9 . The carrier tapes  25  led out of the feed reels  24  are loaded onto the tape feeders  15  correspondingly. 
     When the feeder bases  23  are clamped by clamping mechanisms (not illustrated), the positions of the carts  9  are fixed in the cart mounting portions  14 ( 1 ) and  14 ( 2 ). In addition thereto, the carts  9  are electrically connected to a control portion  38  (see  FIG. 4 ) of the component mounting apparatus M 4 , M 5 . Thus, it is possible to detect that the carts  9  have been mounted in the component mounting apparatus M 4 , M 5  and signals can be exchanged between the control portion  38  and cart control portions  40  (see  FIG. 4 ) which will be described below. Component feeding portion IDs  40   a  (see  FIG. 4 ) given in advance to the carts  9  respectively are stored in storage portions (not illustrated) of the cart control portions  40 . When the respective carts  9  are mounted in the component mounting apparatus M 4 , M 5 , the control portion  38  can identify the carts  9  individually. Thus, by the identification function provided by the component mounting apparatus M 4 , M 5 , the respective carts  9  can be identified individually. 
     An operation portion  22  including a display portion  22   b  and an operation/input portion  22   a  is provided on the apparatus operating face. Operating buttons for performing various operation inputs are disposed in the operation/input portion  22   a . The display portion  22   b  is a display device such as a liquid crystal panel. Various screens such as a guide screen for performing operation inputs through the operation/input portion  22   a  are displayed on the display portion  22   b . Work instruction information used for instruction of setup change work required for changing over the product type is included in the screens. 
     The configuration and function of each tape feeder  15  will be described with reference to  FIG. 3B . The tape feeder  15  includes a body portion  15   a  and a mounting portion  15   b  provided convexly downward from a lower surface of the body portion  15   a . The lower surface of the body portion  15   a  is disposed along the feeder base  23 . When the tape feeder  15  is slid in a direction of an arrow a, a so-called “attach” operation for attaching the tape feeder  15  to the feeder base  23  is performed. In addition, when the tape feeder  15  is slid in a direction of an arrow b in this state, a so-called “remove” operation for removing the tape feeder  15  from the feeder base  23  is performed. 
     In the state in which the feeder tapes  15  have been mounted, connector portions provided in the mounting portions  15   b  are fit into the feeder bases  23 . Thus, the tape feeders  15  are fixedly mounted in the cart mounting portions  14 ( 1 ) and  14 ( 2 ) and the tape feeders  15  are electrically connected to the control portion  38  (see  FIG. 4 ) of the component mounting apparatus M 4 , M 5 . Thus, it is possible to detect that the tape feeders  15  have been mounted on the feeder bases  23  of the component mounting apparatus M 4 , M 5  and it is possible to exchange signals between the control portion  38  and feeder control portions  27  which will be described below. 
     Tape feeding portions  26  including tape feeding mechanisms for pitch-feeding of the carrier tapes  25  are built in the body portions  15   a . Each of the tape feeding portions  26  includes a driving mechanism and a feeder control portion  27 . The driving mechanism drives and rotates a tape feeding sprocket provided in a distal end portion of a tape travelling path. The feeder control portion  27  controls the driving mechanism. The tape feeding portions  26  perform pitch-feeding of the carrier tapes  25  led out of the feed reels  24 , so that the carrier tapes  25  can reach pickup positions where the suction nozzles  19   a  of the mounting heads  19  can pick up components. Feeder ID codes with which the tape feeders  15  can be identified and specified from other tape feeders  15  are stored in storage devices built in the feeder control portions  27 . When the tape feeders  15  are mounted on the carts  9 , the control portion  38  can identify the respective tape feeders  15  individually. 
     That is, the component mounting system  1  shown in the embodiment includes cart identification units and feeder identification units. The cart identification units identify the carts  9  mounted in the cart mounting portions  14 ( 1 ) and  14 ( 2 ) individually. The feeder identification units identify the tape feeders  15  set in the carts  9  individually. In the embodiment, based on identification results of the feeder identification units, it is determined whether a work result of the setup change work executed by the worker is successful or not. Incidentally, the configuration of each cart identification unit and the configuration of each feeder identification unit are not limited particularly. Configuration may be used such that cart identification information and reel identification information such as barcodes or IC tags provided in the carts  9  and the feed reels  24  can be read automatically or manually by the worker who operates a reader terminal machine. 
     Next, the configuration of the control system will be described with reference to  FIG. 4 . The upper system  2  includes a main control portion  30  and a main storage portion  31 . The main control portion  30  has a function as a management computer. The upper system  2  exchanges control signals or information with the respective apparatuses constituting the component mounting system  1  through a communication portion  36  and the network  5 . Component feeding portion allocation information  32 , component shelf stock information  33 , reuse shelf information  34 , and production plan information  35  are stored in the main storage portion  31 . 
     The component feeding portion allocation information  32  is information about allocation states of parts feeders  41  such as tape feeders  15  in all the carts  9  existing in the production area, including the carts  9  which are currently attached to the component mounting apparatuses M 4  and M 5  of the component mounting line  4 , the spare carts  9  which are allocated in the offline setup area  3 , etc. The component shelf stock information  33  is stock information in which feed reels  24  kept in stock in the respective placement sections of the component placement shelf  7  disposed in the component warehouse  6  are associated with shelf identification codes ( 7   a ,  7   b ,  7   c  . . . ) for specifying the respective placement sections individually. The reuse shelf information  34  is data for specifying tape feeders  15  and feed reels  24  which are temporarily placed on the temporary component placement shelf  10  of the offline setup area  3  so as to be reused. The production plan information  35  is data indicating production times and production quantities of substrates to be produced by the component mounting line  4 , in accordance with product types expressing substrate types. 
     The component mounting apparatus M 4 , M 5  is connected to the network  5  through a communication portion  37 . The component mounting apparatus M 4 , M 5  includes a control portion  38  and a storage portion  39 . The control portion  38  is an arithmetic processing device which controls the substrate conveyance mechanism  12 , the component mounting mechanism  20  and the carts  9  mounted in the cart mounting portions  14 , based on data such as production data  39   a  stored in the storage portion  39 , i.e. mounting data downloaded from the main storage portion  31  of the upper system  2  and stored in accordance with the product types to be produced, and the component feeding portion allocation information  32 . Thus, component mounting work for mounting components extracted from the respective tape feeders  15  on a substrate  13  can be executed. 
     The component feeding portion IDs  40   a  are given individually to the carts  9 . The component feeding portion IDs  40   a  of the carts  9  mounted in the cart mounting portions  14  are read by reading units provided in the cart mounting portions  14 . The control portion  38  identifies results of the reading, so that the mounted carts  9  can be identified. The tape feeders  15  as the parts feeders  41  are mounted on the carts  9 . In this state, attachment/detachment state detection portions  42  detect feeder IDs given individually to the mounted tape feeders  15 . 
     The control portion  38  identifies the detected feeders IDs in the same manner so that the mounted tape feeders  15  can be identified. Identification results of the carts  9  or the tape feeders  15  to be identified are compared with the data defined in advance in the production data  39   a , so that it is possible to check whether or not the tape feeders  15  which are attached to the feeder addresses  14   a  of the carts  9  are correct tape feeders  15  which should be originally attached to the feeder addresses  14   a . The operation/input portion  22   a  and the display portion  22   b  are provided in the operation portion  22  on the apparatus operating face illustrated in  FIG. 3A , so as to input necessary operation/data during an operating time or display various operation/guide screens. 
     The setup change work supporting apparatus  8  has a function of providing various information or various display screens to be referred to for efficiently and easily performing setup change work such as replacement or allocation change of tape feeders  15 . The setup change work is required in the carts  9 ( 1 ) and  9 ( 2 ) mounted in the mount mounting portions  14 ( 1 ) and  14 ( 2 ) in order to change over the product type. An example in which the setup change work is executed in advance in the offline setup area  3  before the carts  9 ( 1 ) and  9 ( 2 ) are conveyed to the component mounting line  4  is shown in the embodiment. 
     The setup change work supporting apparatus  8  includes a work instruction information derivation processing portion  43 , a work instruction information storage portion  44 , an operation/input portion  45 , an instruction information display processing portion  46  and a display screen  47 . As to each cart  9 * on which the work will be performed in the offline setup area  3 , current feeder allocation information corresponding to allocation states of currently allocated tape feeders  15 , and first feeder allocation information corresponding to first allocation states of tape feeders  15  for a product type (first product type) to be produced next are included in the component feeding portion allocation information  32  stored in the main storage portion  31  of the upper system  2 . Based on the current feeder allocation information and the first feeder allocation information, the work instruction information derivation processing portion  43  derives work instruction information which defines required setup change work so that the allocation states of the tape feeders  15  in each cart  9 * serving as a work target can be changed over from allocation states where the setup change work has not been started yet to the first allocation states corresponding to the first product type. 
     The derived work instruction information is stored in the work instruction information storage portion  44 . The instruction information display processing portion  46  performs a process to read the work instruction information from the work instruction information storage portion  44  and a process to display the read work instruction information on the display screen  47  in accordance with a predetermined display format. The processes are executed by the worker who performs operation inputs through the operation/input portion  45 . Thus, work instruction information  50  illustrated in  FIG. 5  is displayed on the display screen  47  and the worker executes the setup change work sequentially in accordance with the display contents of the work instruction information  50 . 
     Incidentally, an example in which a single apparatus such as a personal computer, having an independent arithmetic processing function and a storage device is used as the setup change work supporting apparatus  8  has been shown here, the specific embodiment of the invention is not limited to such a configuration but may include various variations. For example, the function of the setup change work supporting apparatus  8  may be contained in the upper system  2  or the individual component mounting apparatuses M 4  and M 5 . In this case, display portions provided in the respective apparatuses may be used as the display screen  47 . 
     The data configuration of the work instruction information  50  will be described with reference to  FIG. 5 . In  FIG. 5 , the work instruction information  50  is prepared whenever setup change work is performed in order to change over the product type to be produced. The work instruction information  50  includes unit work information pieces  50   a  which define contents of works the worker should execute on individual tape feeders  15  as work targets. The unit work information pieces  50   a  are displayed in the order of “work sequence numbers”  51  in accordance with which the works should be executed. That is, each unit work information piece  50   a  includes various items of “work sequence number”  51 , “operation type”  52 , “source”  53 , “destination”  54 , “component name”  55 , “reel”  56 , “comment 1”  57 , and “comment 2”  58 . 
     The “operation type”  52  is type information indicating a type of an execution operation to be performed in the unit work information piece  50   a  in the setup change work. In the embodiment, “remove”, “attach” and “move” are defined as operation information. “Remove” indicates an execution operation to remove a tape feeder  15  which has already been allocated in a cart  9 * (see the arrow b illustrated in  FIG. 3B ). “Attach” indicates an execution operation to newly allocate a tape feeder  15  in a cart  9 * (see the arrow a illustrated in  FIG. 3B ). “Move” indicates an execution operation to once remove a tape feeder  15  from a cart  9 * and then relocate the tape feeder  15  directly to another feeder address  14   a  of the cart  9 *. 
     In the example illustrated in  FIG. 5 , the unit work information pieces  50   a  whose “work sequence numbers”  51  are 1, 3, 4 and 5 have “remove” as their execution operation, and the unit work information piece  50   a  whose “work sequence number”  51  is 2 has “move” as its execution operation. After these unit work information pieces  50   a  having “remove” as their execution operation have been completed, the unit work information pieces  50   a  having “attach” as their execution operation are defined in the “work sequence numbers”  51  which are 6 and higher. Thus, the reason why the unit work information pieces  50   a  always including “remove” as their execution operation are first displayed in preceding orders is to give a clear instruction of a reasonable work procedure to the worker so as to prevent the worker from confusing the work procedure due to mistake or misidentification. 
     That is, in the embodiment, the type information defining the “operation types”  52  includes at least “remove” and “attach”. “Remove” indicates an execution operation to remove a tape feeder  15  which has already been allocated in a cart  9 *, and “attach” indicates an execution operation to newly allocate a tape feeder  15  in a cart  9 *. The work instruction information derivation processing portion  43  is designed so that the unit work information pieces  50   a  sorted in accordance with the “operation types”  52  can be displayed in the display order in which “attach” is arranged following “remove”. 
     The “source”  53  indicates an allocation state in which the setup change work on a tape feeder  15  as a work target in the setup change work has not been started yet. On the other hand, the “destination”  54  indicates an allocation state in which the setup change work has been executed, that is, the allocation state has been changed into a first allocation state corresponding to a first product type. For example, the unit work information piece  50   a  whose “work sequence number”  51  is 1 indicates that “remove” from a cart  9 * should be executed on a tape feeder  15  which is currently allocated at a feeder address  14   a  of 1-4L while a feed reel  24  and a carrier tape  25  should not be removed from the tape feeder  15  but the tape feeder  15  kept integrally with the feed reel  24  should be temporarily placed on the temporary component placement shelf  10  of the offline setup area  3  in order to be reused in and after next production. 
     The worker who has executed the temporary placement of the tape feeder  15  inputs the state of the tape feeder  15  through the operation/input portion  45  of the setup change work supporting apparatus  8 . Thus, the state in which the tape feeder  15  is temporarily placed integrally with the feed reel  24  is stored as reuse shelf information  34  in the main storage portion  31 . Similarly, the unit work information pieces  50   a  whose “work sequence numbers”  51  are 3, 4, and 5 indicate that “remove” from the cart  9 * should be executed on tape feeders  15  which are currently allocated at feeder addresses  14   a  of 1-5L, 1-6L and 1-7L, and the tape feeders  15  should be temporarily placed integrally with the feed reels  24  on the temporary component placement shelf  10  of the offline setup area  3  to be kept temporarily so that the tape feeders  15  provided integrally with the feed reels  24  can be reused. 
     In addition, the unit work information piece  50   a  whose “work sequence number”  51  is 2 indicates that the tape feeder  15  which is currently mounted at a feeder address  14   a  of 1-14L should be once removed and “move” should be executed to remount the tape feeder  15  at a feeder address  14   a  of 1-2L for next production. Each of the unit work information pieces  50   a  whose “work sequence numbers”  51  are 6 and higher has “attach” as its “operation type”  52  by way of example. 
     Here, in the unit work information pieces  50   a  whose “work sequence numbers”  51  are 6 and 7, both the “sources”  53  are reuse and feeder addresses  14   a  of 1-4L and 1-5L are designated as the “destinations”  54  respectively. That is, the tape feeders  15  which have been temporarily placed integrally with feed reels  24  on the temporary component placement shelf  10  of the offline setup area  3  are attached to the feeder addresses  14   a  of 1-4L and 1-5L which are empty because “remove” has already been executed thereon. 
     In addition, in the unit work information pieces  50   a  whose “work sequence numbers”  51  are 8 and 9, the “sources”  53  are Cart  9 A- 10  and Cart  9 A- 11  respectively and feeder addresses  14   a  of 1-6L and 1-7L are designated as the “destinations”  54 . That is, tape feeders  15  which have been attached to feeder addresses  14   a  of  10  and  11  in a spare cart  9 A which is kept in the offline setup area  3  are attached to the feeder addresses  14   a  of 1-6L and 1-7L which are empty because “remove” has been already executed thereon. 
     In the unit work information pieces  50   a  whose “work sequence numbers”  51  are  10  and higher, all the “sources”  53  are “new”. In this case, feed reels  24  kept in the component warehouse  6  or tape feeders  15  provided integrally with the feed reels  24  are newly taken out and newly attached and allocated to feeder addresses  14   a  defined in the “destinations”  54 . 
     The “component name”  55  appended to each unit work information piece  50   a  designates the component name of a component fed by the tape feeder  15 . The “reel”  56  indicates a type of a feed reel used in the tape feeder  15 . Various instruction information auxiliarily required in the setup change work may be designated in the “comment 1”  57  or the “comment 2”  58 . For example, in the case where a shelf identification code ( 7   a ,  7   b ,  7   c , . . . ) designating a placement section of the component warehouse  6  is designated in the “source”  53  and “reuse” is designated in the “destination”  54 , a shelf number etc. for specifying a location of the temporary component shelf  10  where the removed tape feeder  15  is temporarily kept may be displayed in the “comment 1”  57  or the “comment  2 ”  58 . 
     Next, a setup change work instruction method for instructing setup change work which needs to be performed in order to change over a product type in the component mounting system  1  having the aforementioned configuration will be described in accordance with a processing flow of  FIG. 6 . First, when setup change work is started (ST 1 ), a product type as a setup change target is first specified (ST 2 ). That is, a product type as a target to be produced next is specified with reference to the production plan information  35  stored in the main storage portion  31  of the upper system  2 . Here, a first product type is specified as the target to be produced next. 
     Next, allocation information of all carts  9  (component feeding portions) is acquired (ST 3 ). That is, information about allocation states of tape feeders  15  in carts  9 ( 1 ) and  9 ( 2 ) which are currently attached to the component mounting apparatuses M 4  and M 5 , and information about allocation states of tape feeders  15  in carts  9 *,  9 A and  9 B which have been removed from the component mounting apparatuses M 4  and M 5  and exist in the offline setup area  3  are acquired (component feeding portion information acquiring step). 
     Next, a feeder table of one component mounting apparatus as a work target and a cart  9  (component feeding portion) as a work target are specified (ST 4 ). Here, a cart mounting portion  14 ( 1 ) of one of the component mounting apparatuses M 4  and M 5  is the feeder table of the work target, and of the plurality of carts  9  which are kept in the offline setup area  3 , a cart  9 * which has been designated in advance is specified as the work target. 
     Next, processing (ST 5 ) for deriving work instruction information for the cart  9 * (component feeding portion) as a target of the setup change work is executed by the work instruction information derivation processing portion  43 . That is, work instruction information  50  (see  FIG. 5 ) is derived (work instruction information deriving step). The work instruction information  50  defines required setup change work so that allocation states of tape feeders  15  in the cart  9 * as the target of the setup change work can be changed from allocation states in which the setup change work has not been started yet to first allocation states corresponding to a first product type. Thus, the allocation states of the tape feeders  15  can be adapted to an event in which the product type will be changed over to the first product type. The derived work instruction information is stored in the work instruction information storage portion  44 . Next, the work instruction information  50  illustrated in  FIG. 5  is displayed on the display screen  47  by the instruction information display processing portion  46  (instruction information displaying step) (ST 6 ). Thus, setup change processing applied to one cart  9 * is completed (ST 7 ). 
     Here, the work instruction information  50  has a configuration including a plurality of unit work information pieces  50   a  each containing a combination of an “operation type”  52 , a “source”  53  and a “destination”  54 . The “operation type”  52  is type information indicating a type of an execution operation in the setup change work. The “source”  53  and the “destination”  54  are feeder state information indicating a state in which the work on a tape feeder  15  as a work target in the setup change work has not been executed yet and a state in which the work on the tape feeder  15  has been executed, respectively. In the embodiment, the aforementioned state in which the work has not been executed yet may include the state in which the tape feeder  15  has been allocated in a cart  9  which has not been attached to each of the component mounting apparatuses M 4  and M 5  yet. 
     That is, all of the carts  9  which are currently attached to the component mounting apparatuses M 4  and M 5  and the carts  9  which are kept in the offline setup area  3  are included as the “sources”  53  before the work is executed. Thus, a selection range of the “sources”  53  from each of which a tape feeder  15  required for setup change needs to removed can be expanded so that efficiency of the setup change work can be improved. In the instruction information displaying step, the plurality of unit work information pieces  50 a generated thus are displayed on the display screen  47  so that the unit work information pieces  50   a  can be arranged in a work sequence order with which the unit work information pieces  50   a  should be executed. 
     In addition, “remove” and “attach” are included in the “operation types”  52 . “Remove” serves as first information indicating an execution operation to remove a tape feeder  15  which has already been allocated in a cart  9  serving as a component feeding portion. “Attach” serves as second information indicating an execution operation to newly allocate a tape feeder  15  in a cart  9 . In the instruction information displaying step, the unit work information pieces  50   a  sorted in accordance with the pieces of the type information are displayed in a display order in which the operation type “attach” is arranged following the operation type “remove”. That is, the unit work information pieces  50 a including the second work information are displayed following the unit work information pieces  50   a  including the first information. 
     As described above, the component mounting apparatus M 4 , M 5  of the component mounting line  4  includes a feeder identification unit which identifies tape feeders  15  allocated in the cart  9 ( 1 ),  9 ( 2 ) serving as a component feeding portion mounted in the cart mounting portion  14 ( 1 ),  14 ( 2 ). In the embodiment, by use of this function, the feeder identification unit identifying the tape feeders  15  allocated in the cart  9  can detect a situation in which a work result of the setup change work executed by the worker is different from the displayed work instruction information  50 . Then, unit work information pieces  50   a  required for correcting the work result to a correct one based on the work instruction information  50  can be derived newly and additionally displayed on the display screen  47 . 
     Incidentally, the display form of the work instruction information  50  in the execution process of the setup change work may include various variations. For example, in the work execution process in the offline setup area  3 , attachment/removal detection and identification of the tape feeders  15  at the feeder addresses  14   a  of the cart  9 * can be executed in real time by a control/detection function provided by the setup work supporting apparatus  8 . The attachment/removal detection and identification results may be displayed in real time on the work instruction information  50  displayed on the display screen  47 . For example, unit work information pieces  50   a  which have been executed may be displayed by hatching or with checkmarks so that the unit work information pieces  50   a  which have been executed can be distinguished from other unit work information pieces  50 a. Thus, the worker can easily judge which unit work information pieces  50   a  have been executed and which unit work information pieces  50   a  have not been executed. 
     In the embodiment, the “sources”  53  including the carts  9  attached to the component mounting apparatuses M 4  and M 5  of the component mounting line  4  are selected. Accordingly, there is a fear that a mistake may be made to select, as targets to be moved, tape feeders  15  which are in use in the component mounting work for the current product type. To prevent such a mistake, tape feeders  15  which are currently in use or which are scheduled to be used for the current product type are displayed, for example, by hatching or with checkmarks. In such a display manner, the fact that the tape feeders  15  are currently in use or scheduled to be used for the current product type can be displayed. These unit work information pieces  50   a  of the tape feeders  15  can be set as targets of the setup change work after the use of the tape feeders  15  for the current product type has been completed. 
     As described above, in an instruction of setup change work in the component mounting system shown in the embodiment, information about allocation states of tape feeders  15  in carts  9  which are currently attached to the component mounting apparatuses M 4  and M 5 , and information about allocation states of tape feeders  15  in carts  9  which have been removed from the component mounting apparatuses M 4  and M 5  are acquired. Then, work instruction information is derived. The work instruction information defines required setup change work so that allocation states of tape feeders  15  in a cart  9  as a target of the setup change work can be changed from allocation states where the setup change work has not been started yet to first allocation states corresponding to a first product type. Thus, the allocation states of the tape feeders  15  can be adapted to the event in which the product type will be changed over to the first product type. The derived work instruction information is displayed on the display screen. In displaying the instruction information, a plurality of unit work information pieces are displayed on the display screen so that the unit work information pieces can be arranged in the work sequence order with which the unit work information pieces should be executed. 
     Thus, the invention can efficiently and easily perform the setup change work in order to change over the product type. The invention has a particularly conspicuous effect when it is applied to offline setup work. Although an example in which a cart  9  kept in the offline setup area  3  is used as a cart  9 * as a work target of the setup change work has been described in the embodiment, the invention can be also applied to the case where a cart  9  attached to one of the component mounting apparatuses M 4  and M 5  of the component mounting line  4  is used as a work target of the setup change work. Also in this case, the selection range of the “sources”  53  from each of which a tape feeder  15  required for the setup change needs to be removed can be expanded in the same manner as in the case where the cart  9  kept in the offline setup area  3  is used as the work target. Thus, efficiency of the setup change work can be improved. 
     The setup change work instruction method according to the invention has an effect that setup change work for changing over a product type can be performed efficiently and easily. The setup change work instruction method according to the invention can be applied to a field in which mounted substrates in which electronic components are mounted on substrates are manufactured.