JP2011210786A - Component mounting method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a component mounting method that improves productivity by eliminating a decrease in device working rate due to a device stop during feeder rearrangement.SOLUTION: Component mounting in which component mounting operation for taking a component out of a tape feeder and transferring and mounting it is performed targeting a plurality of substrates of different substrate types includes a feeder arranging process of arranging a plurality of tape feeders corresponding to component types needed for a substrate type [2] to be produced next in another specified feeder arrangement section and a feeder arrangement data generating process of generating feeder arrangement data corresponding to the feeder arrangement section in parallel with a component mounting process targeting a substrate type [1], similar processes is repeatedly executed each time a substrate type is changed. Consequently, feeder rearranging operation is executed without interrupting the component mounting operation.

Description

  The present invention relates to a component mounting method for mounting an electronic component on a substrate.

  In a component supply unit of a component mounting apparatus that mounts electronic components on a substrate, a plurality of parts feeders such as tape feeders are arranged in parallel for each component type. When multiple types of board types are targeted for production, the required component types differ depending on the board type. Therefore, when the production target board type is switched, the parts feeder of the component type corresponding to each board type is used. Feeder rearrangement work that involves replacement with a new one or addition of a parts feeder is performed. For the purpose of improving the efficiency of the feeder rearrangement work, it has been proposed to perform feeder arrangement corresponding to a plurality of types of substrates in advance (for example, Patent Document 1).

  In the example shown in this patent document, in the feeder arrangement area of the component supply unit, the optimum feeder arrangement is first performed for one board type, and the next board type to be produced is targeted for the remaining feeder arrangement area. The feeder arrangement is determined so that the optimum arrangement is achieved within a certain range.

JP-A-9-31494

  However, in the above-described prior art examples, the following problems occur as the proportion of high-mix low-volume production increases in the production mode. That is, in such a production form, the frequency of board type switching increases in the same component mounting apparatus, and it is necessary to prepare a large number of parts feeders corresponding to many component types. However, since the number of feeders that can be installed in the feeder arrangement area of the component supply unit of one component mounting apparatus is limited, it is not possible to install all the parts feeders corresponding to multiple types in advance. It is necessary to perform feeder rearrangement when switching. Since the feeder arrangement change involves changing feeder arrangement data indicating the relationship between the type of parts stored in each part feeder and the part feeder arrangement, it is necessary to stop the operation of the apparatus every time the board type is changed. As described above, in the conventional component mounting method, in the component mounting accompanied by the frequent switching of the board type, the apparatus operation rate is lowered due to the apparatus stop at the time of changing the feeder arrangement, and the improvement of the productivity is hindered. was there.

  Accordingly, an object of the present invention is to provide a component mounting method capable of improving productivity by eliminating a decrease in apparatus operation rate due to apparatus stoppage at the time of feeder replacement.

  In the component mounting method of the present invention, a component supply unit having a plurality of feeder placement sections in which a plurality of part feeders are arranged side by side, and component data indicating the type of component stored in the parts feeder are stored for each part feeder. Component data storage means, and feeder placement data automatic generation for generating the feeder placement data indicating the relationship between the part type and the placement position of the parts feeder by reading the part data by mounting the parts feeder in the feeder placement section A component mounting method that sequentially executes a component mounting operation of taking out a component from the parts feeder by a mounting head and transferring and mounting the component on a substrate using a component mounting apparatus having a function for a plurality of substrates of different substrate types. A plurality of pads corresponding to the component types required for one substrate type in one feeder placement section. A feeder placement step for placing a feeder, a feeder placement data generation step for creating the feeder placement data corresponding to the one feeder placement section, and a feeder placement data and the one substrate type stored in advance. A component mounting process for executing the component mounting operation based on component mounting data indicating a component type and mounting coordinates, and in parallel with the component mounting process for one board type, and then a production target A feeder arrangement step of arranging a plurality of parts feeders corresponding to the component types required for other board types in the other feeder arrangement sections, and generating the feeder arrangement data corresponding to the other feeder arrangement sections The feeder arrangement data generation step is executed.

  According to the present invention, in component mounting in which component mounting work for taking out a component from a parts feeder and transferring and mounting it on a substrate is sequentially executed for a plurality of substrates of different substrate types, a component mounting process for one substrate type In parallel with the feeder placement step of placing a plurality of parts feeders corresponding to the component types required for other board types to be produced next in other feeder placement sections, and other feeder placement sections By executing the feeder arrangement data generating step for generating the feeder arrangement data corresponding to the above, it is possible to eliminate the reduction in the apparatus operation rate due to the apparatus stop at the time of changing the feeder arrangement and improve the productivity.

The perspective view of the component mounting apparatus of one embodiment of this invention The top view of the component mounting apparatus of one embodiment of this invention The block diagram which shows the control system of the component mounting apparatus of one embodiment of this invention Explanatory drawing of feeder arrangement | positioning division and feeder arrangement | positioning data in the component mounting apparatus of one embodiment of this invention Flowchart of execution of continuous mounting operation for plural board types in component mounting method according to one embodiment of the present invention The figure which shows the allocation to the feeder arrangement | positioning division | segmentation of the board | substrate kind in the component mounting method of one embodiment of this invention

  First, the structure of the component mounting apparatus will be described with reference to FIGS. This component mounting apparatus has a function of taking out components from a plurality of parts feeders arranged in parallel in a component supply unit by a mounting head, and transferring and mounting them on a substrate in an electronic component mounting line for mounting electronic components on a substrate. . In FIG. 1, a substrate transport mechanism 2 is disposed on a base 1 in the X direction. The substrate transport mechanism 2 transports the substrate 3 on which components are mounted by a conveyor, and positions the substrate 3 on the mounting stage provided on the substrate transport mechanism 2. Component supply units 4A and 4B are provided on both sides of the substrate transport mechanism 2, and each of the component supply units 4A and 4B includes a plurality (two in this case) of feeder arrangement sections A1 and A2 and feeder arrangement sections B1. , B2 is provided.

  In these feeder arrangement sections, feeder groups 5A1, 5A2, 5B1, and 5B2 are grouped in parallel, which are grouped tape feeders 5 that are parts feeders. These tape feeders 5 have a function of pitch-feeding a carrier tape holding a component to be mounted and supplying it to a pickup position by a component mounting mechanism described below. Here, the feeder groups 5A1 and 5B1 are a set of tape feeders 5 that store a plurality of types of components mounted on the same board type [1], and the feeder groups 5A2 and 5B2 are different from the board type [1]. This is a set of tape feeders 5 for storing a plurality of types of components mounted on the board type [2] (see FIG. 4B).

  That is, the component supply units 4A and 4B are configured to include a plurality of feeder arrangement sections in which a plurality of tape feeders 5 are arranged in parallel. Note that the feeder placement sections A1 and A2 and the feeder placement sections B1 and B2 are independent forms having individual feeder bases, or are forms in which sections are set on feeder placement data in a common feeder base. May be.

  A Y-axis moving table 7 provided with a linear drive mechanism is disposed horizontally in the Y direction at one end of the base 1 in the X direction. The Y-axis moving table 7 is mainly composed of a beam member 7a provided in an elongated shape in the horizontal direction, and linear rails 8 are arranged in the horizontal direction on the beam member 7a. A linear block 9 is fitted to the linear rail 8 so as to be slidable in the Y direction, and the linear block 9 is moved in the X axis with a linear drive mechanism via a rectangular coupling bracket 10 arranged in a vertical posture. It is combined with the tables 13A and 13B.

  The X-axis moving tables 13A and 13B are mainly composed of a beam member 13a provided in an elongated shape in the X direction, and a linear rail 14 is arranged in the horizontal direction on the beam member 13a. A linear block (not shown) is fitted to the linear rail 14 so as to be slidable in the X direction. The linear rail 14 is coupled to the mounting head 17 via a rectangular coupling bracket 16 arranged in a vertical posture. ing. By driving the linear drive mechanism of the X-axis moving tables 13A and 13B, the mounting head 17 moves in the X direction together with the coupling bracket 16.

  The mounting head 17 is a multiple head including a plurality of unit mounting heads 18, and a suction nozzle 18 a that sucks and holds electronic components is attached to the lower end of each unit mounting head 18. The suction nozzle 18 a is moved up and down by a nozzle lifting mechanism built in the unit mounting head 18. By driving the Y-axis moving table 7 and the X-axis moving tables 13A and 13B, the mounting head 17 moves in the X direction and the Y direction, whereby each unit mounting head 18 is moved from the tape feeder 5 of the component supply units 4A and 4B. The electronic component is taken out and transferred and mounted on the substrate 3 positioned in the substrate transport mechanism 2. The Y-axis movement table 7 and the X-axis movement table 13B constitute a front head movement mechanism, and the Y-axis movement table 7 and the X-axis movement table 13A constitute a rear head movement mechanism (see FIG. 3).

  A component recognition camera 6 is disposed between the component supply units 4A and 4B and the board transport mechanism 2, and a mounting head 17 that takes out electronic components from the component supply units 4A and 4B is located above the component recognition camera 6. When moving, the component recognition camera 6 images the electronic component held by the mounting head 17. When the electronic component is mounted on the substrate 3, position correction at the time of component mounting is performed based on the result of recognition of the imaging result by the recognition device 21 (see FIG. 3). As shown in FIG. 2, a board recognition camera 19 that moves integrally is mounted on the mounting head 17 so as to be positioned below the X-axis table 13. The board recognition camera 19 is attached to the coupling bracket 16 in a posture in which the imaging optical axis is directed downward. The board recognition camera 19 moves together with the mounting head 17 to the upper side of the board 3 to take an image of the recognition mark provided on the board 3.

  Next, the configuration of the control system will be described with reference to FIG. In FIG. 3, the control device 20 includes a program execution unit 20a and a feeder arrangement data generation unit 20b as internal control functions. Further, the control device 20 includes a substrate transport mechanism 2, a Y-axis movement table 7, a front-side head movement mechanism composed of an X-axis movement table 13B, a rear-side head movement mechanism composed of a Y-axis movement table 7 and an X-axis movement table 13A, and nozzle suction. It is connected to the mechanism 17a, the nozzle drive mechanism 17b, the recognition device 21, and the storage device 23, and transmits an operation command to each mechanism / each unit and receives a detection signal and a processing result from each unit. The nozzle suction mechanism 17 a and the nozzle drive mechanism 17 b perform a suction operation and a lifting operation by the suction nozzle 18 a mounted on the mounting head 17.

  The recognition device 21 recognizes images acquired by the board recognition camera 19 and the component recognition camera 6. Thereby, the components held by the substrate 3 and the mounting head 17 are recognized. The data input / output device 22 exchanges signals and data with an external storage device such as a tape feeder 5 that is replaceably mounted on the component supply units 4A and 4B and a database connected via a communication network. Do. Here, each of the plurality of tape feeders 5 mounted on the component supply units 4A and 4B includes an independent controller 5a.

  The controller 5a has a control function for controlling a tape feeding mechanism for pitch-feeding the carrier tape, a storage function and device for storing component data for the component type stored in the tape feeder 5 together with feeder data for specifying the tape feeder 5. It has a communication function to exchange control signals and feeder data with the main body. When the control device 20 accesses the individual controller 5a via the data input / output device 22, data such as feeder data and component data stored by the storage function of the controller 5a of each tape feeder 5 can be referred to. it can.

  Therefore, the controller 5 a of the tape feeder 5 serves as a component data storage unit that stores component data indicating the type of component stored in the tape feeder 5 for each tape feeder 5. The configuration of the component data storage means is not to store the component data individually in the controller 5a of the tape feeder 5, but to a storage device 23 described below or a host device that controls the component mounting device in an integrated manner. The component data may be stored in the external storage device provided in association with the feeder data specifying the tape feeder 5.

  The storage device 23 stores programs and data necessary for executing the component mounting work by the device, and includes a program storage unit 23a, a mounting data storage unit 23b, and a feeder arrangement data storage unit 23c. The program storage unit 23a stores a control program such as a mounting sequence program. The mounting data storage unit 23b stores component mounting data indicating the type of components to be mounted, mounting coordinates, and the like for each target board type. The feeder arrangement data storage unit 23c is feeder arrangement data for specifying the arrangement of the tape feeder 5 in the component supply units 4A and 4B, that is, data indicating the correspondence between the feeder addresses set in the component supply units 4A and 4B and the component types. Remember.

  The program execution unit 20a executes various programs stored in the program storage unit 23a and controls the above-described units to perform a component mounting operation. The feeder arrangement data generation unit 20b automatically generates data indicating the relation between the feeder address for each feeder arrangement section and the component type supplied by the tape feeder 5 arranged at the feeder address. have. That is, when the tape feeder 5 is installed in the feeder arrangement section, the feeder arrangement data generation unit 20b reads the feeder data and the component data from the tape feeder 5, and relates the relationship between the component type and the installation position of the tape feeder 5. Is generated.

  Next, with reference to FIG. 4, the feeder arrangement section and the feeder arrangement data provided in the component supply units 4A and 4B will be described. Feeder groups 5A1, 5A2, 5B1, and 5B2 in which tape feeders 5 are grouped are arranged in feeder arrangement sections A1 and A2 and feeder arrangement sections B1 and B2 respectively provided in the component supply units 4A and 4B. As shown in FIG. 4 (a), feeder addresses for specifying the positions at which the individual tape feeders 5 are arranged are set in the feeder arrangement sections A1, A2, B1, and B2. In the feeder arrangement sections A1, A2, B1, and B2, connectors for connecting the controller 5a of the tape feeder 5 and the data input / output device 22 are provided for each feeder address. By attaching the tape feeder 5, The tape feeder 5 attached to each feeder address can be automatically identified by the feeder arrangement data generation unit 20b.

  In feeder rearrangement accompanying board type switching, a machine operator installs a tape feeder 5 in which a part type corresponding to the board type is stored in a feeder arrangement section designated for the target board type. I do. At this time, the machine operator can attach the tape feeder 5 to an arbitrary feeder address without being aware of the relationship between each tape feeder 5 and the feeder address in the feeder placement section. The feeder arrangement data generation unit 20b automatically generates the feeder arrangement data 24 according to the feeder address where the tape feeder 5 is mounted.

  As shown in FIG. 4B, the feeder arrangement data 24 associates the corresponding substrate type 24b with the feeder arrangement section 24a, and the feeder address 24c (1, 2, 3,...) For each feeder arrangement section. The name 24d (a, b, c,...) And the part name 24e (Pa, Pb, Pc...) Are associated with each other. Here, an example is shown in which feeder placement sections A1 and B1 are designated for the substrate type [1] and feeder placement sections A2 and B2 are designated for the substrate type [2].

  The component mounting apparatus of the present invention is configured as described above. Hereinafter, an example of a component mounting method using the present apparatus will be described with reference to FIGS. In this component mounting method, a component mounting operation in which a component is taken out by a mounting head 17 from a plurality of tape feeders 5 arranged in parallel in the component supply units 4A and 4B, and transferred and mounted on the substrate 3 is performed. Are executed sequentially.

  First, prior to the start of the mounting operation, a feeder arrangement operation is performed in which the tape feeder 5 is arranged in the component supply units 4A and 4B in accordance with the substrate type to be operated (feeder arrangement step). Here, as shown in FIG. 6A, the tape feeder 5 (feeder groups 5A1, 5B1) corresponding to the substrate type [1] is arranged in the feeder arrangement sections A1, B1. From this state, the work shown in the flow of FIG. 5 is executed. That is, the production of the substrate type [1] is started (ST1), and a plurality of components taken out from the tape feeder 5 are sequentially mounted on the substrate 3 (component mounting step). Then, while executing the component mounting process for the board type [1], the tape feeder 5 used for the board type [2] is arranged in the designated feeder arrangement section (ST2). That is, as shown in FIG. 6B, the tape feeder 5 (feeder groups 5A2, 5B2) is arranged in the feeder arrangement sections A2, B2 designated for the substrate type [2].

  Next, feeder data and component data are acquired from the newly placed tape feeder 5 (ST3). When the production of the substrate type [1] is completed (ST4), the feeder arrangement data of these tape feeders 5 is automatically generated (ST5). That is, based on the feeder data and component data acquired from the newly arranged tape feeder 5, the feeder arrangement data generation unit 20b generates the feeder arrangement data 24 shown in FIG. 4B (feeder arrangement data generation step). . Then, based on the generated feeder arrangement data, production of the board type [2] is started (ST6), and a plurality of components taken out from these tape feeders 5 are sequentially mounted on the board 3 (component mounting process).

  Next, the tape feeder 5 used for the production of the substrate type [1] is removed from the feeder arrangement sections A1 and B1 (ST7), and the tape feeder 5 used for the substrate type [3] is arranged in the designated feeder arrangement section (ST8). (Feeder placement process). That is, as shown in FIG. 6C, the tape feeder 5 used for the substrate type [2] is arranged in the feeder arrangement sections A2 and B2 specified for the substrate type [2]. Next, feeder data and component data are acquired from the newly placed tape feeder 5 (ST9).

  When the production of the substrate type [2] is completed (ST10), the feeder arrangement data of these newly arranged tape feeders 5 is automatically generated (ST11). Based on the generated feeder arrangement data, the production of the substrate type [3] is started (ST12). Then, as shown in FIG. 6 (d), the tape feeder 5 used for the production of the substrate type [2] is removed from the feeder placement sections A2 and B2, and thereafter the same processing is performed each time the substrate type is switched. Is repeatedly executed.

  That is, the above-described component mounting method includes a feeder arrangement step of arranging a plurality of tape feeders 5 corresponding to a component type required for one board type in one feeder arrangement section, and a feeder corresponding to one feeder arrangement section. Feeder placement data generation process for generating placement data, and component mounting that executes component mounting work based on feeder placement data and component mounting data indicating component types and mounting coordinates stored in advance corresponding to one board type The process configuration includes processes.

  In the above-described process configuration, a plurality of tape feeders 5 corresponding to the component types required for the other substrate types to be produced next are provided in parallel with the component mounting step for one substrate type. The feeder arrangement process of arranging the feeder arrangement section and the feeder arrangement data generating process of generating the feeder arrangement data corresponding to the other feeder arrangement section are executed.

  As a result, the operation method that conventionally had to update the mounting data and the feeder arrangement data, for example, the tape feeder used for the production of the board type [2] during the production of the board type [3] is used as the feeder arrangement section A2, The tape feeder necessary for the production of the substrate type [1] that is removed from B2 and placed in the feeder placement sections A1 and B1 in the previous time can be placed in the feeder placement sections A2 and B2 and used for the next production. Thus, it is possible to perform feeder rearrangement work without interrupting component mounting work. Accordingly, even when a component mounting operation involving frequent board type switching is executed by a component mounting apparatus in which the size of the feeder arrangement area of the component supply unit is restricted, the apparatus is stopped when the feeder arrangement is changed. Reduce productivity and improve productivity

  The component mounting method of the present invention has an effect of improving productivity by eliminating a reduction in apparatus operation rate due to apparatus stoppage at the time of feeder replacement, and manufactures a mounting board in which electronic components are mounted on a board It can be used in the field to do.

2 Substrate transport mechanism 3 Substrate 4A, 4B Component supply unit 5 Tape feeder 5a Controller 5A1, 5A2, 5B1, 5B2 Feeder group 17 Mounting head A1, A2, B1, B2 Feeder arrangement section

Claims (1)

A parts supply unit having a plurality of feeder placement sections in which a plurality of parts feeders are arranged side by side, a parts data storage means for storing parts data indicating the types of parts stored in the parts feeder for each parts feeder, A component mounting apparatus having a feeder arrangement data automatic generation function that reads the part data and generates feeder arrangement data indicating a relationship between a part type and a mounting position of the part feeder by arranging a parts feeder in a feeder arrangement section Use
A component mounting method for sequentially executing a component mounting operation for taking out a component from the parts feeder by a mounting head and transferring and mounting it on a substrate for a plurality of substrates of different substrate types,
A feeder placement step of placing a plurality of parts feeders corresponding to the component types required for one of the substrate types in one feeder placement section;
A feeder arrangement data generation step for generating the feeder arrangement data corresponding to the one feeder arrangement section;
A component mounting step for performing the component mounting operation based on the component placement data and the component mounting data indicating the component type and mounting coordinates stored in advance corresponding to the one board type,
Simultaneously with the component mounting process for one board type, a plurality of parts feeders corresponding to the part types required for the other board type to be produced next are placed in the other feeder placement sections. A component mounting method comprising: a feeder placement step of placing and a feeder placement data generation step of generating the feeder placement data corresponding to the other feeder placement section.

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