JPH07162194A - Part mounting method - Google Patents

Abstract

PURPOSE:To reduce down time due to part running out and thus enable extended continuous operation, by supplying part from a sub-part supply unit if the part runs out in the main part supply unit during part mounting operation. CONSTITUTION:Parts are set on part supply units ZL, ZR (Steps 11, 12). At this time one of the supply units, ZL for example, is adjusted to function as the main part supply unit and the other ZR is adjusted to operate as the sub- part supply unit. Then mounting operation is started through the main part supply unit ZL (Step 13). If a part runs out in the main part supply unit ZL (Step 14), other parts that have not run out are uninterruptedly mounted through the main part supply unit ZL (Step 17). Then a shift is made from the main part supply unit ZL to the sub-part supply unit ZR, and only the part that has run out is mounted through the sub-part supply unit ZR (Steps 18, 19, 20). Thereafter, mounting operation is performed mainly through the main part supply unit ZL, and only a part that has run out is mounted through the sub-part supply unit ZR.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a component mounting method using an electronic component mounting machine.

[0002]

2. Description of the Related Art In recent years, with the progress of electronics, it is necessary to improve the productivity of electronic component mounting machines.

A conventional example will be described below with reference to FIGS. 2, 3 and 4. FIG. 2 shows a schematic configuration of the electronic component mounter. Reference numeral 1 denotes a rotary head, which mounts components by a plurality of nozzles 2 provided. An XY table 3 fixes a board on which components are mounted and positions the board under the nozzle 2. ZL and ZR are parts supply units, and a plurality of parts cassettes 5 are mounted on each of the left parts supply unit ZL and the right parts supply unit ZR.
Is positioned below the nozzle 2. 6 is a controller,
Controls the entire electronic component mounter.

Next, referring to FIG. 3, the component supply units ZL and ZR
The operation of will be described. FIG. 3A shows the parts supply section ZL, ZR.
3 shows a state in which parts are set in the parts cassette 5 of FIG. The component supply units ZL and ZR have exactly the same component arrangement. This is because, on the one hand, even if the parts run out during production, it is possible to continue production on the other hand.

FIGS. 3 (1) to 3 (3) show the movements of the component supply parts ZL and ZR when a component shortage occurs during production. As shown in (1) of FIG. 3B, when the component supply unit ZL is in the operating position and is in production, the component supply unit ZR is located at the component replenishment position that does not interfere with the component supply unit ZL. There is.

[0006] When the parts are cut off, the state shown in (2) of Fig. 3B is obtained. That is, the component supply unit ZL moves to the component replenishment position, and the component supply unit ZR moves to the operating position to continue production. Meanwhile, the worker is
L parts are replenished.

Further, when a component shortage occurs in the component supply section ZR, the state shown in (3) of FIG. 3B is obtained. That is, the component supply unit ZR moves to the component replenishment position, and the component supply unit ZL
Moves to the operating position and continues production. By switching the component supply units ZL and ZR in this manner, it is possible to prevent a decrease in the operating rate due to the shortage of components.

Next, a conventional component mounting method when a component is out will be described with reference to the flowchart of FIG. In steps 41 and 42, components are similarly set in the component supply unit ZL and the component supply unit ZR. Production is started in step 43. At this time, while operating the component supply unit ZL,
The parts supply unit ZR is set as the replenishment position. In step 44, it is determined whether or not there is a component in the component supply unit ZL, and if there is a component, the components are taken out from the component supply unit ZL and mounted in steps 45 and 46. On the other hand, if the parts supply unit ZL is out of parts in step 44, the parts supply unit ZL is in step 47.
L and ZR are switched, the component supply unit ZR is operated, and the component supply unit ZL is set to the replenishment position. Next, in step 48, it is determined whether or not there is a component in the component supply unit ZR, and if there is a component, the components are taken out from the component supply unit ZR and mounted in steps 49 and 50. On the other hand, in step 48, the parts supply unit Z
If even one R component is out of stock, the production operation is stopped in step 51 because of out of stock.

Assuming that the parts are set as shown in FIG. 3A, if the part A of the part supply section ZL runs out of parts and the part B of the part supply section ZR runs out of parts, both parts are supplied. Since parts ZL and ZR are not completely aligned with each other, the parts will stop running out. At this time, production cannot be continued unless either part is replenished.

[0010]

As described above, in the conventional component mounting method as described above, the component supply units ZL and ZR are provided.
However, even if only one type of each component runs out, if the operator delays component replenishment, the component will stop running, and the mounted components cannot be used efficiently, and there is a limit in terms of long-term continuous operation. there were.

Also, in terms of parts purchasing and inventory management, all kinds of parts in both parts supply sections ZL and ZR must be prepared, and two sets must be prepared even if the number of parts used is small. Therefore, there is also a problem that the loss cost is large.

The present invention solves the above problems, and an object of the present invention is to provide a component mounting method capable of shortening the component outage stop time, capable of continuous operation for a long time, and minimizing loss cost. .

[0013]

In order to solve the above problems, the component mounting method of the present invention is an electronic component mounting machine having a pair of component supply units, wherein one component supply unit is set as a main component supply unit. In addition, the other component supply unit is set as a sub-component supply unit, and all types of components to be supplied by the component supply unit are mounted in the main component supply unit, while the sub-component supply unit has many mounted parts. Only the parts that are easily out of stock are installed,
When a component of the main component supply unit is cut during mounting of the component of the main component supply unit, only that component is mounted from the sub component supply unit.

[0014]

According to the above construction, when a component of the main component supply unit is cut off when the component of the main component supply unit is mounted, only that component is mounted from the sub-component supply unit, so the stoppage of equipment component outage is reduced. However, it can be operated continuously for a long time. Further, since it is necessary to mount only the components that are easily mounted and have a large number of components mounted on the sub-component supply unit, it is possible to minimize loss costs.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A component mounting method according to an embodiment of the present invention will be described below with reference to FIGS. Note that FIG.
Since the schematic configuration of the electronic component automatic mounter shown in FIG. 1 is the same as the conventional one, the same reference numerals are given to those having the same functions, and the description thereof will be omitted.

In FIG. 1, parts are set in the parts supply units ZL and ZR in steps 11 and 12. Here, one of the component supply units ZL and ZR is determined as the main component supply unit and the other is determined as the sub component supply unit. In this embodiment, the component supply unit ZL is set as the main component supply unit and the component supply unit ZR is set as the sub component supply unit. All the components to be mounted are set in the main component supply unit ZL. On the other hand, in the sub-component supply unit ZR, only the components that are likely to run out of components in the main component supply unit ZL due to the large number of mounted components are selected and set.

In step 13, mounting is started in the main component supply unit ZL. Steps 14, 15, and 16 are the same as steps 44, 45, and 46 of the above-mentioned conventional example. Now, even if the parts of the main component supply unit ZL run out in step 14, the main component supply unit ZL continues the mounting except for the parts that run out in step 17. Next, steps 18, 19,
The main component supply unit ZL and the sub component supply unit ZR are switched at 20 and only the component that has run out of components is mounted by the sub component supply unit ZR. After that, the main component supply unit ZL is mainly mounted, and only the parts that are out of components are mounted by the sub component supply unit ZR.

Further, if the parts supply unit ZR also runs out of parts in step 19, the parts supply is stopped in step 21. The steps 19 and 21 are the same as the steps 48 and 51 of the conventional example.

As described above, since the components of both component supply parts ZL and ZR are efficiently mounted, the probability that the equipment will stop running out of components is reduced, and long-term continuous operation is possible. Further, since it is not necessary to set all the parts in the sub-parts supply unit, it is possible to reduce the loss on the purchasing side and the number of parts setting steps.

[0020]

As described above, according to the present invention, one component supply unit is set as the main component supply unit and the other component supply unit is set as the auxiliary component supply unit, and the main component supply unit has the components. While all types of parts to be supplied are installed in the supply part, only the parts that have a large number of mountings and are prone to component exhaustion are installed in the sub-parts supply part. If a part is cut out, by mounting only that part from the sub-component supply unit, the probability of a part cut-out is reduced, the downtime is reduced, and high-performance and highly-efficient part mounting can be realized. In addition, since it is not necessary to set all the parts in the sub-parts supply unit, it is possible to reduce the loss in purchasing, the number of parts setting steps, and the like.

[Brief description of 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 showing a schematic configuration of an electronic component mounting machine.

FIG. 3 is a diagram showing the concept of a conventional component supply unit.

FIG. 4 is a flowchart of a conventional component mounting method.

[Explanation of symbols]

 1 Rotary Head 2 Nozzle 3 XY Table 5 Parts Cassette 6 Controller ZL Main Parts Supply Section ZR Sub Parts Supply Section

Claims (1)

[Claims] 1. An electronic component mounter having a pair of component supply units, wherein one component supply unit is set as a main component supply unit and the other component supply unit is set as a sub component supply unit, and a main component supply unit is provided. While all types of parts that should be supplied in the parts supply part are mounted in the parts part, only the parts that have a large number of mounting parts and are likely to run out of parts are mounted in the sub parts supply part. A component mounting method characterized in that, when a component in the main component supply unit is cut, only that component is mounted from the sub component supply unit.