JP4460469B2 - Parts confirmation method - Google Patents

Description

  The present invention relates to a component confirmation method, and more particularly to a method for confirming a component used in a component mounter for mounting a component on a substrate.

  When an electronic component is mounted on a single circuit board, it may be necessary to produce the component with the same electrical characteristics for each component type. That is, there are cases where parts manufactured from the same raw material for each part type, that is, parts manufactured from the same lot must be used. This is because the characteristics of components used on one board are aligned. Such a mounting method is called “pairing mounting”. Parts having the same characteristics are called “pairing parts”.

  Such pairing mounting is often used for a multi-sided board (one board made up of a plurality of small boards) and the like, and the plurality of small boards obtained from the board have the same characteristics.

Conventionally, in order to determine whether or not a part is produced from the same lot, there is known a discrimination method in which parts stored in the same container are produced from the same lot (for example, , See Patent Document 1).
JP-A-9-252196

  However, in the method described in Patent Document 1, the lot is different if the component storage body is different. For this reason, for example, when there is no taping component stored in a component tape that is a kind of component storage body, there is a problem that pairing mounting cannot be continued.

  The present invention has been made in order to solve the above-described problems, and provides a component confirmation method that allows pairing mounting to be continued even when there are no more components stored in the component storage body. The purpose is to provide.

  In order to achieve the above object, a component confirmation method according to the present invention is a method for confirming a component to be mounted on a substrate by a component mounter, wherein a lot number acquisition step of acquiring a lot number of a new component; A lot number determination step for determining whether or not a lot number of a new part is stored in a lot management storage unit that stores a lot number in association with each of the parts mounted on the board; A first replacement target determination step for determining that the new component can be mounted on the substrate when the lot number of the component is stored in the lot management storage unit. .

  When the lot number of the component currently mounted is stored in the lot management storage unit and the lot number of the new component matches the lot number of the component currently mounted, the new component is mounted on the board. Judge that you can. For this reason, even if the component storage bodies are different, components produced from the same lot can be mounted on the substrate. If the lot number is the same, the part type is the same, but if there are multiple part types with the same lot number, the part name and lot number of the new part are the parts currently mounted. It is necessary to determine whether or not the part name and lot number match.

Preferably, component verification method described above, further, the new part of the case where the lot number is not stored in the lot management storage unit, parts products and properties equivalent equivalent components mounted on the substrate A characteristic matching determination step for determining whether or not the lot number of the new part matches the lot number of the equivalent part with reference to the lot compatible storage unit storing the lot number of the same, and the characteristic matching determination step And determining whether the new part can be mounted on the substrate when it is determined that the characteristics are the same.

The lot number of parts having equivalent characteristics is stored in the lot compatible storage unit. For this reason, even when there is no new part with the same lot number, it is possible to continue the component mounting on the board using the new part with the equivalent lot number.

  More preferably, in the above-described component confirmation method, when the number of the new components is less than the number of components mounted on one substrate, the new components cannot be mounted on the substrate. It includes a third exchangeable object determination step for determining.

  When the number of new components is less than the number of components mounted on one board, the component mounting can be stopped. For this reason, pairing mounting can be performed reliably.

  In addition, the present invention can be realized not only as a component confirmation method including such characteristic steps, but also as a component confirmation device using the characteristic steps included in the component confirmation method as a means. It is also possible to realize a characteristic step included in the confirmation method as a program that causes a computer to execute. Needless to say, such a program can be distributed via a recording medium such as a CD-ROM (Compact Disc-Read Only Memory) or a communication network such as the Internet.

  According to the present invention, pairing mounting can be surely continued even when there are no more components stored in the component storage body.

  Hereinafter, a component mounting system according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is an external view showing an overall configuration of a component mounting system.
The component mounting system 200 is a system for mounting an electronic component (pairing component) having the same characteristics on the substrate 20 (pairing mounting) and confirming whether or not the new component is a pairing component at the time of component replacement. A solder printer 28, an adhesive application machine 30, high-speed mounting machines 32 to 36, general-purpose mounting machines 38 and 40, a component confirmation device 22, an information collection device 24, and an information output device 26. Yes.

  The solder printer 28 is a device that prints solder on the substrate 20. The adhesive applicator 30 is an apparatus that applies an adhesive on the substrate 20.

  The high-speed mounting machines 32 to 36 are devices for mounting electronic components on the substrate 20 and mount components on the substrate 20 by a rotary head that rotates at high speed. The general-purpose mounting machines 38 and 40 are devices for mounting electronic components on the substrate 20, and various types of components are mounted on the substrate 20 by a modular head. The high-speed mounting machines 32 to 36 are not limited to the type in which components are mounted by a rotary head. For example, a component may be mounted at a high speed with a modular head.

  The substrate 20 is conveyed in the order of the solder printer 28, the adhesive applicator 30, the high-speed mounting machines 32 to 36, and the general-purpose mounting machines 38 and 40, and then transferred to a reflow furnace (not shown). The mounted component is fixed.

  The information collection device 24 is connected to the solder printer 28, the adhesive applicator 30, the high-speed mounting machines 32-36 and the general-purpose mounting machines 38 and 40 via a network, and the remaining amount of solder consumed by the solder printer 28. And a device that collects various information such as the remaining amount of adhesive consumed by the adhesive applicator 30 and the remaining amount of components consumed by the high-speed mounting machines 32 to 36 and the general-purpose mounting machines 38 and 40.

  The component confirmation device 22 includes a lot number of a taping component stored in a new component tape added to any of the high-speed mounting machines 32 to 36 and the general-purpose mounting machines 38 and 40 and a taping component currently mounted on the board 20. It is a device that checks lot numbers and determines whether or not they have the same characteristics.

The information output device 26 is a device that displays a confirmation result in the component confirmation device 22.
The component confirmation device 22, the information collection device 24, and the information output device 26 are configured by a general computer, and their main components are configured as programs that run on the CPU.

  FIG. 2 is a diagram illustrating an example of a component feeder in which components that are one type of members mounted on the high-speed mounting machines 32 to 36 and the general-purpose mounting machines 38 and 40 are stored. The component feeder 50 is connected to a reel 51 around which a component tape 53 for housing the component is wound, and the component tape 53 wound around the reel 51 is drawn into the mounting machine while mounting the component. It is. When the remaining amount of taping parts is almost exhausted, it is possible to replace the part tape 53 while the part mounter is in operation by connecting a new part tape 53 called “splicing”. is there.

  The component feeder 50 is provided with an operation panel 52 for displaying the remaining amount of the component tape 53 and notifying the main body of the mounting machine of the replacement of the component tape 53.

  FIG. 3 is a diagram illustrating an example of the operation panel 52. The operation panel 52 includes an LED (Light Emitting Diode) 54 that informs that the remaining amount of parts is low.

FIG. 4 is a diagram for explaining parts of the same lot.
The parts produced from the same lot are, for example, parts produced from chip parts obtained by dicing the same semiconductor substrate 55. The parts produced from the same lot are stored in a plurality of part tapes 53. The plurality of component tapes 53 are wound around the plurality of reels 51, respectively. Each reel 51 is provided with a bar code 56, and a part number indicating a part name, a lot number for identifying a lot, and information on the number of remaining parts are written in the bar code. The user reads the barcode 56 using a barcode reader (not shown). It is assumed that the barcode reader is connected to the component confirmation device 22. After the production is finished, the barcode is replaced and the information on the remaining number of parts is updated.

FIG. 5 is a block diagram showing an internal configuration of the component confirmation apparatus 22.
The component confirmation device 22 includes a component number verification unit 62, a component name verification unit 64, a lot number verification unit 66, an SMD (Surface Mounting Device) component information collection unit 68, a compatible lot number verification unit 70, and a lot number. A registration unit 72, a reel replacement result notification unit 74, and a lot management DB (database) 76 are provided.

  The component number collation unit 62 is a processing unit that collates the number of components stored in the component tape to be newly added and the number of components necessary for production of one board.

  The part name collation unit 64 is a processing unit that collates a part name of a part stored in a part tape to be newly added and a part name of a part used for component mounting.

  The lot number collation unit 66 is a processing unit that collates a lot number of a component stored in a component tape to be newly added with a lot number of a component used for component mounting.

  The SMD component information collection unit 68 is a processing unit that collects various types of information related to components being mounted (remaining number of components, component name, component lot number, component mounting position, etc.) via the information collection device 24. .

  The compatible lot number collation unit 70 is the lot number of the component stored in the component tape to be newly added and the lot number of the component having the same characteristics as the component used for component mounting (compatible lot number). Is a processing unit for collating

  The lot number registration unit 72 is a processing unit that registers information such as a lot number related to the added part in the lot management DB 76 described later when a part tape is newly added.

  The reel replacement result notifying unit 74 is a processing unit that notifies the information output device 26 of a result regarding whether or not replacement by newly adding a component tape is possible.

  The lot management DB 76 stores two tables, a mounted component management table 78 and a lot compatibility table 80. Details of the mounting component management table 78 and the lot compatibility table 80 will be described later.

  FIG. 6 is a diagram illustrating an example of the mounted component management table 78. The mounting component management table 78 includes a mounting machine on which the reel 51 is mounted, an address indicating a reel mounting position on the mounting machine, a part name (part number), a lot number, and one board production. Are stored in association with each other (the number of components per board).

  For example, the reel mounting position of the mounting machine indicated by the address “10005” indicates that the component 51 (calling number) “0AX123456-00001” and the lot number “L0001” of the reel 51 is mounted. It is shown that the number of parts required for the production of one board is “40”.

  FIG. 7 is a diagram showing an example of the lot compatibility table 80. In the lot compatibility table 80, a lot number and three lot numbers (compatible lot numbers) of parts whose characteristics are equivalent to those of the parts indicated by the lot numbers are shown in association with each other.

  For example, it is understood that the parts having characteristics equivalent to the parts indicated by the lot number “L0001” are the parts having the lot numbers “L0002”, “L0020”, and “L0029”.

FIG. 8 is a flowchart of processing executed by the component confirmation apparatus 22.
When the remaining number of components decreases, a warning lamp provided in each mounting machine blinks, an LED 54 on the operation panel 52 of the component feeder 50 blinks, and the user is notified. In response to the notification, the user takes out the reel 51 of a new part to be replaced from the shelf, and reads the information of the barcode 56 attached to the reel 51 using a barcode reader.

  The part name collation unit 64, the lot number collation unit 66, and the part number collation unit 62 of the component confirmation apparatus 22 receive information on the part name (part number), lot number, and remaining part number read by the user via the barcode reader. Each is acquired (S1).

  The component name collation unit 64 refers to the mounted component management table 78, identifies the component name stored in the reel 51 mounted at the address to be replaced, and the bar attached to the new reel 51. The part name of the code 56 is collated, and it is determined whether or not the part names match (S2).

  If the component names match (YES in S2), the lot number matching unit 66 refers to the mounted component management table 78 and stores the components stored in the reel 51 mounted at the address to be replaced. The lot number is compared with the lot number of the bar code 56 attached to the new reel 51, and it is determined whether or not the lot numbers match (S3).

  If the lot numbers do not match (NO in S3), the lot number verification unit 66 determines the lot number of the component whose characteristics are equivalent to those of the component housed in the reel 51 mounted at the address to be replaced. (Compatible lot number) is extracted from the lot compatibility table 80, and it is checked whether or not it matches the lot number of the barcode 56 attached to the new reel 51 (S7).

  When the lot numbers match (YES in S3), or when the lot number read by the barcode reader matches the compatible lot number (YES in S7), the component number verification unit 62 sets the new reel 51 to the new reel 51. Check whether the number of remaining parts of the attached barcode 56 is equal to or greater than the number of parts per board in the column in which the address to be exchanged described in the mounted parts management table 78 is described. (S4). That is, the component number collation unit 62 checks whether or not the number of components stored in the new reel 51 is larger than the number of components necessary for the production of one board.

  When this condition is satisfied (YES in S4), the reel replacement result notifying unit 74 notifies the information output device 26 that it is possible to replace with a new reel 51 (S5). When the reel 51 is replaced with a new reel 51, the lot number registration unit 72 registers the lot number of the reel 51 in the mounted component management table 78 (S6).

  If the part names do not match (NO in S2), do not match the compatible lot number (NO in S7), or the number of parts stored in the new reel 51 is one board to produce one board If the required number is not reached (NO in S4), the reel replacement result notifying unit 74 notifies the information output device 26 that it is impossible to replace the reel 51 with a new one (S8). .

  The information output device 26 that has received the notification of whether or not the reel 51 can be replaced by the notification processing (S5, S8) displays the information on its own display device.

  Note that the “lot number acquisition unit” according to claim 8 of the claims corresponds to the processing of S1 executed by the lot number verification unit 66, and the “lot management storage unit” is being implemented in the lot management DB 76. Corresponding to the parts management table 78, the “lot number judging means” corresponds to the processing of S3 executed by the lot number collating unit 66, and the “replaceable target judging means” is executed by the reel replacement result notifying unit 74 S5. And the process of S6 executed by the lot number registration unit 72.

  As described above, according to the present embodiment, even if the reels 51 for storing parts are different, pairing parts produced from the same lot can be continuously mounted on the substrate. .

  Further, even when there is no reel 51 that stores a new part having the same lot number, it is possible to continue component mounting using the reel 51 that stores an alternative part having the same part characteristics.

  Further, when the number of components stored in the new reel 51 when the reel 51 is replaced is less than the number of components necessary to produce a single board, a notification that the reel 51 is not replaced is given. By doing so, it is possible to prevent a component having different characteristics from being mixed and mounted in one board, and it is possible to prevent useless production of the board.

  The component mounting system according to the embodiment of the present invention has been described above, but the present invention is not limited to this embodiment.

  For example, the information about the component may not be stored in the barcode, but may be stored in other storage means such as an RF (Radio Frequency) tag.

In addition, a storage unit such as a barcode or an RF tag may be attached to each part.
Further, if the lot numbers are the same, the lot numbers may be determined so that the component types are the same.

  In addition, each of the high-speed mounting machines 32 to 36 and the general-purpose mounting machines 38 and 40 may be provided with functions of the component confirmation device 22 and the information output device 26.

  The present invention can be applied to a component confirmation method or the like in a component mounter that performs pairing mounting.

It is an external view which shows the whole structure of a component mounting system. It is a figure which shows an example of the components feeder in which the components which are 1 type of the member with which a high-speed mounting machine and a general purpose mounting machine are accommodated. It is a figure which shows an example of an operation panel. It is a figure for demonstrating the components of the same lot. It is a block diagram which shows the internal structure of a components confirmation apparatus. It is a figure which shows an example of the components management table in mounting. It is a figure which shows an example of a lot compatibility table. It is a flowchart of the process which a components confirmation apparatus performs.

Explanation of symbols

DESCRIPTION OF SYMBOLS 20 Board | substrate 22 Component confirmation apparatus 24 Information collection apparatus 26 Information output apparatus 28 Solder printer 30 Adhesive application machine 38 General-purpose mounting machine 50 Component feeder 51 Reel 52 Operation panel 53 Component tape 55 Semiconductor substrate 56 Bar code 62 Component number collation part 64 Component name verification unit 66 Lot number verification unit 68 SMD component information collection unit 70 Compatible lot number verification unit 72 Lot number registration unit 74 Reel replacement result notification unit 76 Lot management DB
78 Mounting component management table 80 Lot compatibility table 200 Component mounting system

Claims (8)

A method of confirming a component to be mounted on a board by a component mounter,
A lot number acquisition step for acquiring a lot number of a new part;
Lot number determination step for determining whether the lot number of the new part is stored in the lot management storage unit that stores the lot number in association with each of the parts mounted on the board;
Wherein when a new part of the lot number is stored in the lot management storage unit includes a first replacement target can be determined determining that the new component can be mounted on the substrate,
If the lot number of the new part is not stored in the lot management storage unit, a lot compatible storage unit that stores the lot number of an equivalent part having characteristics equivalent to those of the component mounted on the board. A characteristic matching determination step for determining whether or not the lot number of the new part matches the lot number of the equivalent part;
A component confirmation step comprising: a second replacement target determination step for determining that the new component can be mounted on the substrate when it is determined in the characteristic match determination step that the characteristics match. Method. Furthermore, when the number of the new components is less than the number of components mounted on one board, a third replacement target determination step for determining that the new components cannot be mounted on the board. The part confirmation method according to claim 1, further comprising: The new part is a part stored in a part storage body,
The part confirmation method according to claim 1 or 2 , wherein, in the lot number acquisition step, the lot number of the new part is acquired by reading the storage contents of the storage unit attached to the part storage body. . 3. The part confirmation method according to claim 1, wherein, in the lot number acquisition step, the lot number of the new part is acquired by reading the storage content of the storage unit attached to the new part. Said storage means, part confirmation method according to claim 3 or 4, characterized in that a bar code. Wherein the storage unit, RF (Radio Frequency) part confirmation method according to claim 3 or 4, characterized in that a tag. A device for confirming components to be mounted on a board by a component mounter,
Lot number acquisition means for acquiring a lot number of a new part;
Lot management storage means for storing a lot number in association with each of the components mounted on the substrate;
Lot number determination means for determining whether the lot number of the new part is stored in the lot management storage means;
Wherein when a new part of the lot number is stored in the lot control memory means includes a first replacement target can determination means determines that the new component can be mounted on the substrate,
If the lot number of the new part is not stored in the lot management storage unit, a lot compatible storage unit that stores the lot number of an equivalent part having characteristics equivalent to those of the component mounted on the board. A characteristic matching determination means for determining whether or not the lot number of the new part and the lot number of the equivalent part match,
A component confirmation comprising: a second replacement target determining unit that determines that the new component can be mounted on the substrate when the characteristic matching determining unit determines that the characteristics match. apparatus. The component confirmation apparatus according to claim 7 ;
A component mounting machine comprising: mounting means for mounting the new component, which is determined to be mountable on the substrate by the component checking device, on the substrate.

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