JP3028636B2 - Component mounting method and component mounting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001] The present invention mounts components such as electronic components,
Component mounting method that eliminates equipment stoppage due to component shortage and
It relates to a component mounter .

[0002]

2. Description of the Related Art In recent years, society has become more and more electronic, and high productivity is desired for electronic component automatic mounting machines.

Hereinafter, a conventional component mounting method will be described. As shown in FIG. 2, the electronic component automatic mounting machine picks up components from component supply units 12 a and 12 b, which are an assembly of component cassettes, and mounts components on a printed board on an XY table 11 by controlling a mounting head 10. Unit 13 and operation panel 9
It is composed of

[0004] The control unit 13 controls the entire operation.
NC programs and the like are stored. Component supply unit 12a
And 12b, component cassettes of the same type are mounted in the same arrangement, and even if one of the component supply units 12a or 12b runs out of components during use, the other component supply unit 12b
By using or 12a, parts can be replenished and operation stop due to running out of parts can be prevented.

[0005] The operation of the electronic component mounter configured as described above will be described. As shown in FIG. 3, when the printed circuit board is carried into the XY table 11 in step # 14, the components are mounted while judging the presence or absence of the components in steps # 15 and # 16. Repeat the component mounting until the completion of the mounting of the board. When the production of one substrate is completed, in step # 18, the substrate is transported again in step # 14. Step # here
If it is determined in step 15 that the parts have run out, step # 19
The parts supply units 12a and 12b are exchanged with each other. In other words, when components are exhausted during the supply of components from the component supply unit 12a, replacement is performed so that components are supplied from the component supply unit 12b. Then, during operation of the component supply unit 12b, component replenishment of the component supply unit 12a is performed.

[0006]

However, the above-mentioned conventional method has a problem in that the operation of mounting the components is stopped for a few seconds and the operation of replacing the component supply units 12a or 12b is performed, thereby lowering the operation rate. Was.

[0007] The present invention solves the above-mentioned conventional problems, and eliminates equipment stoppage due to running out of components of an electronic component mounting machine, prevents a decrease in operation rate, and enables a component mounting method capable of high-efficiency production. The purpose is to provide a machine .

[0008]

According to a first aspect of the present invention, there is provided a component mounting method for a component mounting machine that selectively uses a plurality of component supply units. The mounting of one board is completed and the mounting of the next board is started.
Before mounting, all the components required to mount the next board
A mounting step in which the component mounter itself determines in advance that the component is insufficient for the currently used component supply unit; and
While it is determined that there is no shortage,
It is mounted on the next board using the supply unit,
And a component supply unit switching step of switching the currently used component supply unit to another component supply unit when it is determined that the component supply unit is insufficient . Also, in the component mounting method according to the second invention of the present application, a plurality of component supply units, each of which is a set of component cassettes, are provided so as to be movable and positionable on the same line in the direction in which the component cassettes are arranged, and the component cassettes are placed in the same row. Is selected and moved to the supply position, and the component taken out from the component supply unit at the supply position is mounted on a printed circuit board. A spare component supply unit that is switched and used for component supply when a component shortage occurs during mounting, and the spare component supply unit that is not in use can be refilled during the mounting operation. The mounting of one board is completed and the next
Before starting board mounting, to mount the next board
Not all necessary parts are available in the parts supply currently in use.
A determining step of the component mounting apparatus itself in advance determine the Rukoto, before
While the judgment process determines that there is no shortage,
Mount on the next board using the current component supply unit,
When it is determined in the determination step that the parts are insufficient , the currently used component supply unit and the spare component supply unit are respectively moved and positioned on the same line in parallel with the transport operation of the substrate to be mounted next. And a component supply unit switching step of performing a component supply unit switching operation. A component mounter according to a third aspect of the present invention is a component mounter that selectively uses a plurality of component supply units,
Before the mounting of one board is completed and the mounting of the next board is started,
All components required to mount the next board are currently used.
The component mounter itself reports that there is a shortage in the
Is in advance, and while it is determined that there is no shortage ,
Mount on the next board using the current component supply unit,
When it is determined that there is a shortage, a control unit is provided which controls to switch the currently used component supply unit to another component supply unit. Also, the component mounter according to the fourth invention of the present application is provided with a plurality of component supply units, each of which is a group of component cassettes, each of which can be moved and positioned on the same line in the direction in which the component cassettes are arranged, and the component cassettes are placed in the same row. Is selected and moved to a supply position, and a component taken out from the component supply unit at the supply position is mounted on a printed circuit board. A spare component supply unit that is used for switching to component supply when a component shortage occurs during mounting, and the spare component supply unit that is not in use is a component mounter that can replenish components during a mounting operation. , One board
Before mounting the next board after the mounting of the
All parts required to mount one board are currently in use.
The component mounter itself judges in advance that there is a shortage in the
While it is determined that there is no shortage,
Use the component supply unit to mount on the next board.
When it is determined that the parts supply unit is currently mounted, the component supply unit currently used and the spare component supply unit are moved and positioned on the same line in parallel with the transfer operation of the substrate to be mounted next, thereby switching the component supply unit. And a control unit that controls to perform the control.

[0009]

According to the first aspect of the present invention, according to the above configuration,
The last one that can be mounted in the component supply unit currently in use.
Replace the component supply unit after mounting on the board without waste
can do. Therefore, the components supplied by the component supply
Use as efficiently as possible and output the mounting board as much as possible
And production efficiency can be improved . In addition, the present application
According to the second aspect of the present invention, with the above configuration, the transfer of the substrate
Switching the component supply unit in parallel with the operation, and transferring the board
Since the switching operation of the component supply unit ends during the operation,
Replacement of parts has no effect on production efficiency
Operating rate can be improved.

[0010]

An embodiment of the present invention will be described below with reference to the drawings.

The electronic component automatic mounting machine according to one embodiment of the present invention is the same as the conventional example shown in FIG. 2, so that the description thereof will be omitted and its operation will be described.

As shown in FIG. 1, in step # 1, the number of remaining components of each component cassette is inputted from an operation panel 9, and
The control unit 13 stores the information. Thereafter, the control unit 13 counts each time a component is mounted.

Next, in step # 2, the control unit 1 determines whether all the components necessary for one board to be mounted next are insufficient.
3 judges. If it is determined that the number of remaining components is not insufficient, the board is conveyed in step # 8, and the process proceeds to step # 5 and step # 6 to repeat component mounting.

On the other hand, if it is determined in step # 2 that the number of remaining components is insufficient, in the parallel process steps # 3 and # 4, the replacement of the component supply units 12a or 12b and the operation of board transfer are performed. And at the same time. The operation of transporting the substrate takes several seconds and is equivalent to the operation time of replacing the component supply units 12a or 12b, so that the operation does not decrease. Or later,
The process proceeds to step # 5 and step # 6, and the component mounting is repeated.

In step # 7, if the production of one substrate is completed and the next substrate is produced, the operation is repeated from step # 2.

As described above, according to the present embodiment, if it is predicted that a shortage of components for a board to be mounted next will occur, the parts supply unit 12a or 12b can be switched in parallel during the transport of the board. It is possible to eliminate the time for replacing the component supply units 12a or 12b when the product is out of stock and the time for stopping the mounting of components due to the running out of components, thereby preventing a reduction in the operation rate.

In the embodiment, as a method of estimating whether or not a component is insufficient, a method of counting by the control unit 13 is used. However, the component supply unit 12a, 12b or the component cassette itself has a component. A method of providing a counting device or a method of detecting the remaining amount of the component supply units 12a and 12b or the component cassette by a detection device may be used.

[0018]

As described above, according to the present invention ,
Board without waste up to the last one that can be mounted by the component supply unit
The parts supply section can be replaced after mounting
You. Therefore, the parts supplied by the parts supply unit are
To maximize the output of the mounting board
Rate can be improved . In addition, the board transfer operation
At the same time, the component supply unit is switched to
In the meantime, the switching operation of the component supply
The component mounter does not stop for the
Product production can be continued, preventing a decrease in the operating rate and producing high efficiency.
Excellent component mounting method and component mounting machine that can be manufactured
You can do it.

[Brief description of the drawings]

FIG. 1 is a flowchart of a component mounting method according to an embodiment of the present invention.

FIG. 2 is a perspective view of a main part of the electronic component automatic mounting machine.

FIG. 3 is a flowchart of a conventional component mounting method.

[Explanation of symbols]

 12a, 12b Component supply unit 13 Control unit

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H05K 13/02

Claims (8)

(57) [Claims] 1. A component mounting method for a component mounter that selectively uses a plurality of component supply units, comprising :
Before mounting the next board after mounting is completed,
All components required to mount the
And a judgment step in which the component mounter itself judges in advance that there is a shortage in the feeding section, and judges that there is no shortage in the judgment step.
During the operation, the currently used parts supply
Mounted on board, but judged that it is insufficient in the above judgment process
A component supply unit switching step of switching a currently used component supply unit to another component supply unit when the component mounting is performed. 2. The component mounting method according to claim 1, wherein the component supply unit switching step is performed in parallel with a transport operation of a board to be mounted next. 3. A plurality of component supply units, each of which is a set of component cassettes, are provided so as to be movable and positionable on the same line in the direction in which the component cassettes are arranged, and each of the component supply units in which component cassettes are placed in the same row. Select one of them, move to the supply position, position it, mount the component taken out from the component supply unit at the supply position on the printed circuit board, and select the unselected component supply unit when the component runs out during mounting. A spare parts supply unit that is switched and used for parts supply.
This is a component mounting method in a component mounter that can replenish components during the mounting operation to the spare component supply unit that is not in use. The mounting of one board is completed and the mounting of the next board is started.
Before installing the next board.
A judgment step in which the component mounter itself judges in advance that the currently used component supply unit is insufficient, and in the judgment step,
While it is determined that there is no shortage,
It is mounted on the next board using the feeding unit,
When it is determined that the parts are insufficient, the parts supply section currently used and the spare parts supply section are moved and positioned on the same line in parallel with the transfer operation of the substrate to be mounted next, and the parts supply is performed. A component supply unit switching step of performing a component switching operation. 4. A component mounter for selectively using a plurality of component supply units, wherein mounting of one board is completed and the next board is mounted.
Required to mount the next board before starting mounting
That all of the necessary parts are
Is determined in advance by the component mounter itself, and it is determined that there is no shortage.
During the operation, the currently used parts supply
A component mounting machine, comprising: a control unit that controls mounting of a currently used component supply unit to another component supply unit when it is determined that the component supply unit is insufficient for mounting on a board . 5. The component mounter according to claim 4, wherein the control unit controls to perform a switching operation of the component supply unit in parallel with a transport operation of a substrate to be mounted next. 6. A plurality of component supply units, each of which is a set of component cassettes, are provided so as to be movable and positionable on the same line in the direction in which the component cassettes are arranged, and each of the component supply units in which component cassettes are placed in the same row. Select one of them, move to the supply position, position it, mount the component taken out from the component supply unit at the supply position on the printed circuit board, and select the unselected component supply unit when the component runs out during mounting. A spare parts supply unit that is switched and used for parts supply.
The component supply unit of the preliminary not in use a component mounting machine which is capable component replenishment even during mounting operation, substrate one real
Before mounting the next board after mounting is completed,
All components required to mount the
The component mounter itself judges in advance that there is a shortage in the feeding section
And while it is determined that there is no shortage,
Use the product supply unit to mount on the next board.
When it is determined that the component supply unit currently being used and the spare component supply unit are moved and positioned on the same line, the switching operation of the component supply unit is performed in parallel with the transfer operation of the substrate to be mounted next. A component mounting machine, comprising: a control unit configured to control the mounting. 7. The component mounter according to claim 6, wherein the control unit counts the number of remaining components in each component cassette. 8. The component mounting machine according to claim 6, wherein the component supply unit is provided with a counting device for counting the number of remaining components in each component cassette, and the control unit captures the number of remaining components.