JP3518412B2 - Electronic component supply method by tray feeder - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of supplying electronic parts by a tray feeder for supplying a tray containing electronic parts to a pickup position by a transfer head of an electronic part mounting apparatus.

[0002]

2. Description of the Related Art In an electronic component mounting apparatus, a method using a tray feeder is known as a method of supplying electronic components such as semiconductor chips. In this tray feeder, a tray in which a plurality of electronic components are stored in a plane is housed in a container such as a magazine, and the tray is sequentially taken out from the magazine according to the order of use and supplied to the pickup position of the transfer head.

In the supply of electronic components by the tray feeder, a plurality of electronic components on the tray are sequentially picked up, and when one tray becomes empty, component replacement is performed by replacing it with a new tray. Conventionally, when replenishing these components, each time the tray becomes empty, the components are exhausted and the mounting device is stopped to replenish the components, or for types with large usage, a pallet containing the same types of electronic components is stored in advance in a magazine. A plurality of trays are stored to prepare a spare tray, and when one tray becomes empty, another pallet of the same type is pulled out and supplied to the pickup position.

[0004]

However, even when preparing the above-mentioned spare tray, conventionally, since a plurality of pallets are simply stored in the same magazine, the parts of these pallets are out of stock. At this time, it was necessary to suspend the mounting operation for a long time while these pallets were exchanged to replenish the parts. As a result, there is a problem that the operating rate of the mounting apparatus is reduced due to the shortage of parts and the improvement of productivity is hindered.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a method for supplying electronic components by a tray feeder, which can shorten the mounting operation interruption time at the time of component replenishment and improve the operation rate.

[0006]

According to a first aspect of the present invention, there is provided a method of supplying electronic components by a tray feeder, wherein an electronic component mounting apparatus is provided by sequentially taking out pallets from a magazine storing pallets holding trays storing the electronic components. a method of supplying an electronic component according to the tray feeder of the electronic component supply supplied to the pick-up position by the transfer head, Ma
The upper and lower two magazines are stored in the gazin storage part, and
One magazine is used as a normal supply magazine, and the lower one is reserved.
For a predetermined type of electronic parts, a step of storing a plurality of pallets storing the same type of electronic parts in the normal supply magazine and the spare magazine , and from the normal supply magazine Pa pulled out
If one type of electronic component stored in a tray runs out of parts, the pallet storing the electronic component is discharged to the replenishing unit provided above the magazine accommodating unit , and then a new pallet is stored in the pallet. a and a step of replenishing the electronic component, and the other pallet for storing the electronic component and the same kind of electronic components extent Engineering supplied to the pickup position of the electronic component is pulled out from the magazine for the preliminary.

According to a second aspect of the present invention, there is provided a method of supplying electronic components by the tray feeder, which is the method of supplying electronic components by the tray feeder according to the first aspect.
When using, charge the pallet discharged to the replenishment section.
If the work of replenishing the child parts has already been completed,
The pallet has not been pulled out from the magazine and the replenishment section has already been
I tried to use the pallets that have already been supplied with electronic parts .

According to the present invention, for electronic components of a predetermined type, a plurality of pallets for storing electronic components of the same type are stored in a magazine , and if a component shortage occurs for one type of electronic component. The pallet storing the electronic parts is discharged to the replenishment section provided separately from the magazine, and the pallet newly replenished with the components is returned through this replenishment section to reduce the mounting operation interruption time during the component replenishment. It can be shortened.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings. 1 (a) is a perspective view of a tray feeder according to an embodiment of the present invention, FIG. 1 (b) is a view showing a state in which the tray feeder is connected to an electronic component mounting apparatus, and FIG. 2 is a side view of the tray feeder. FIG. 3 is a perspective view of the magazine and drawer of the tray feeder, FIG. 4 is a plan view of the magazine and pallet of the tray feeder, and FIG.
(A), (b), (c), (d) is explanatory drawing of the component supply operation of the tray feeder.

First, the overall structure of the tray feeder will be described with reference to FIG. In FIG. 1A, the tray feeder 1 is provided with a pallet supply mechanism having the same configuration, which is symmetrical with respect to the center line CL. The pallet 3 is mounted with the tray 2 in which a large number of electronic components are stored in a grid pattern,
The pallets 3 are stored in a magazine 4 in a stacked state.
Two sets of magazines 4 are vertically fixed to the right and left pallet supply mechanisms. On the electronic component mounting device side of the magazine 4 (front side in FIG. 1A),
A drawer unit 5 is provided for drawing and placing the pallet 3 from the magazine 4. The drawer unit 5 can be raised and lowered by an elevation unit 7, which is an elevation unit.

Above the upper magazine 4, there is arranged an unmounted component discharging section 8 for accommodating electronic components to be discharged without being mounted. A replenishment section 6 is provided. The electronic component replenishing unit 6 takes out the pallet holding the empty tray after the electronic component is picked up, and re-feeds the pallet after replenishing the electronic component.

Each of the above elements is housed in a cover case 9, and a cover 10 which can be opened and closed is provided above the supply portion 6. Similarly, a door that can be opened and closed is also provided on the back side of the magazine 4 so that the magazine 4 can be mounted / removed and the pallet 3 can be stored in the magazine 4.

As shown in FIG. 1B, the tray feeder 1 is used by being connected to an electronic component mounting apparatus 11. The rising position of the drawer unit 5 is the pick-up position of the electronic component by the transfer head 12, and the pallets 3 sequentially drawn from the magazine 4 are lifted up by the drawer unit 5 to pick up the transfer head 12. Is supplied to. Then, the electronic components in the tray 2 held by the pallet 3 are picked up by the transfer head 12 and mounted on the substrate 13 positioned in the mounting portion.

Next, the structure of each part of the tray feeder will be described. In FIG. 2, the tray feeder 1 is a caster 20.
Frames 22 and 23 are erected on a base member 21 supported laterally by A and 20B. The frame 22 is provided with an elevating part 7 including a motor 24 and a feed screw 25. By driving the elevating part 7, the drawer part 5 moves up and down. Also frame 22
Is provided with a roller 26 for leveling the tray feeder 1. The level of the tray feeder 1 matches the reference level of the electronic component mounting apparatus by riding the roller 26 on the level matching section provided in the electronic component mounting apparatus.

A magazine accommodating portion 30 is fixed to the frame 23, and the magazine accommodating portion 30 accommodates two upper and lower magazines 4. A door 31 is provided behind the magazine accommodating portion 30, and the magazine 4 can be attached and detached by opening and closing the door 31. By providing a plurality of magazines 4 in the magazine accommodating portion 30, more diverse pallets can be arranged, and the other magazine can be taken out while the mounting work is continued using one magazine. There is an advantage that the pallet can be replenished and replaced.
Above the magazine accommodating section 30, an unmounted component discharging section 8 and a replenishing section 6 are provided. The functions of the unmounted component discharging section 8 and the replenishing section 6 will be described later.

Next, with reference to FIGS. 3 and 4, the pallet 3 stored in the magazine 4 and the drawer portion 5 for drawing and placing the pallet 3 will be described. As shown in FIG. 3, a magazine 4 contains a plurality of pallets 3 stacked in a number of racks (not shown). Pallet 3
A tray 2 in which a large number of electronic components P are stored in a grid is attached to the tray. An engaging portion 3a having a notch is provided at the front end portion (left side in FIG. 3) of the pallet 3.

Two guide members 36 are provided in front of the magazine 4 and extend vertically. A slide member 35 that slides along a guide member 36 is provided at the front end of the table 5a of the drawer 5 that moves up and down in front of the magazine 4, and the table 5a is set at a predetermined position with respect to the magazine 4. It is designed so that it can be raised and lowered while it is held.

The drawer unit 5 has a pallet moving mechanism driven by a motor 34. By driving the motor 34, the moving block 32 reciprocates in the arrow direction on the table 5a. The moving block 32 is provided with two rollers 33, and the moving block 32 is reciprocated in a state in which the roller 33 is engaged with the cutout portion of the engaging portion 3 a of the pallet 3, so that the moving block 32 shown in FIG. As shown in, the pallet 3 in the magazine 4 can be pulled out onto the table 5a, and the pallet 3 on the table 5a can be pushed into the magazine 4 for storage. When the pallet 3 reciprocates, the guide rail 3 provided on the table 5a
The position of the pallet 3 is regulated by the guide member 36 extending vertically and the guide member 36 extending vertically.

The tray feeder for supplying electronic parts is constructed as described above, and its operation will be described below. First, in FIG. 1, a tray 2 in which electronic components are stored
The pallet 3 holding the is stored in a predetermined storage position in the magazine 4. When the mounting work of the predetermined pallet 3 in the magazine 4 and the mounting work of the magazine 4 in the magazine storage unit 30 are completed and the electronic component mounting apparatus is activated and the mounting operation is started, the drawer unit 5 first stores the predetermined electronic components. Move vertically to the height position of the pallet 3. Next, as shown in FIG. 4, the roller 33 of the moving block 32 is engaged with the engaging portion 3 a of the pallet 3.
The pallet 3 is pulled out onto the table 5a of the pull-out unit 5 by driving the pallet moving mechanism to move the moving block 32 to the mounting apparatus side in the state of being engaged with.

After this, the drawer portion 5 rises to the pickup position and stops. In this state, as shown in FIG. 1B, the transfer head 12 of the electronic component mounting apparatus 11 moves onto the drawing section 5, and here the drawing section 5 is moved by the suction nozzle.
Electronic components are picked up from the tray 2 held on the upper pallet 3. After that, the transfer head 12 moves onto the substrate 13 to mount electronic components on the substrate 13.

Next, with reference to FIG. 5, a component replenishing operation when a component runs out will be described. In FIG. 5A, a magazine 4A for a normal supply and a magazine 4B for a spare are arranged in the magazine housing section 30. For a predetermined type of electronic component that is used in a large amount, the same type of electronic component is used. A plurality of pallets to be stored are stored in magazines 4A and 4B.
At the start of the mounting operation, first, the pallet 3 is pulled out from the normal supply magazine 4A by the drawer portion 5, and the drawer portion 5 is lifted to supply the electronic components to the transfer head 12.

In the process of continuing the mounting operation of picking up electronic components from the pallet 3 and mounting them on the board, 1
Pallet 3 caused by parts shortage for one type of electronic component
When the tray 2 attached to the tray is empty, the component replenishing operation is performed. In this replenishing operation, the pallet 3 having the empty tray 2 mounted therein is ejected to the replenishing section 6 as shown in FIG. 5B, not to the magazine 4A originally stored. At this time, the operator is informed that it is necessary to replenish the parts.

After this, the operator accepts this notification, and FIG.
As shown in (c), the pallet 3 discharged to the supply section 6
Take out and perform parts replenishment work. During this time, the drawer unit 5 descends to draw out another pallet 3 having a tray 2 storing electronic components of the same type as the electronic components that have run out of components from the spare magazine 4B, and rises to the pickup position again for transfer. Electronic components are supplied to the head 12 (see the state of FIG. 5A).

When the operator completes the replenishment of the parts, the pallet 3 is reintroduced into the replenishing section 6, and if a signal to that effect is input, the drawer section 5 will be closed as shown in FIG. 5 (d). The re-input pallet 3 is pulled out from the replenishing unit 6 and lowered to store the pallet 3 in the spare magazine 4B. That is, the pallet 3 newly replenished with the components is stored as a spare in the magazine 4B, and is returned to the position where the other pallet 3 pulled out when the component ran out was stored. Then, instead of another pallet 3, a new standby pallet is placed in the magazine 4B.

If the worker replenishes the parts quickly when the parts run out, and if the parts replenishment work has already been completed for the pallet 3 when the parts are used next time, the spare magazine 4B is used. The pallet is not pulled out, and the pallet 3 already supplied to the replenishing unit 6 and existing in the replenishing unit 6 when the component is used is used as it is to supply the component.

As described above, a plurality of pallets for storing electronic components of the same type are separately stored in the magazine 4A and the magazine 4B, and when the electronic components are out of stock, the pallets that are out of parts are provided separately from the magazine. The spare magazine 4B and the pallet storing the electronic parts that are out of stock,
It is possible to promptly supply the component when the component runs out and to minimize the mounting operation interruption time. Further, the pallet after the parts are replenished is returned to the spare magazine 4B, and the spare electronic parts are always in a prepared state, so that it is not necessary to stop the mounting apparatus for supplying the spare parts.

In the present embodiment, an example in which a magazine 4A for normal supply and a magazine 4B for spare are separately provided as magazines for storing pallets is shown, but the same magazine is referred to as a normal supply section. The pallet may be stored separately from the spare compartment.

[0028]

According to the present invention, for a predetermined type of electronic component, a plurality of pallets for storing the same type of electronic component are stored in a magazine, and one type of electronic component runs out. In that case, the pallet storing the electronic parts is discharged to the parts replenishment section provided separately from the magazine, and the pallet newly replenished with the parts is returned via this parts supply section. It is possible to reduce the suspension time of the mounting operation of. Also for normal supply
Variety by having a magazine and a spare magazine
It is possible to serve different pallets and
While continuing the mounting work using the magazine, the other
To remove the magazine and replenish and replace the pallet.
You can

[Brief description of drawings]

FIG. 1A is a perspective view of a tray feeder according to an embodiment of the present invention, and FIG. 1B is a diagram showing a connection state of a tray feeder according to an embodiment of the present invention with an electronic component mounting apparatus.

FIG. 2 is a side view of the tray feeder according to the embodiment of the present invention.

FIG. 3 is a perspective view of a magazine and a drawer portion of the tray finder according to the embodiment of the present invention.

FIG. 4 is a plan view of the magazine and pallet of the tray feeder according to the embodiment of the present invention.

FIG. 5A is an explanatory diagram of a component replenishing operation of the tray feeder according to the embodiment of the present invention. FIG. 5B is an explanatory diagram of a component replenishing operation of the tray feeder according to the embodiment of the present invention. Explanatory drawing of the component replenishment operation of the tray feeder of one embodiment (d) Explanatory drawing of the component replenishment operation of the tray feeder of one embodiment of this invention

[Explanation of symbols]

2 trays 3 pallets 4,4A, 4B magazine 5 Drawer 6 Supply Department 7 Lifting part 11 Electronic component mounting equipment 12 Transfer head

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) H05K 13/00-13/08

Claims (2)

(57) [Claims] 1. An electronic component by a tray feeder for supplying an electronic component, which is sequentially taken out from a magazine accommodating a pallet holding a tray storing electronic components and is supplied to a pickup position by a transfer head of an electronic component mounting apparatus. Is a method of feeding, and the magazine storage section has two upper and lower
The above magazine is stored and the upper magazine is normally supplied.
For the magazine and the lower one as the spare magazine
However, for electronic components of a predetermined type, a plurality of pallets storing electronic components of the same type are provided in the magazine for normal supply.
And the step of storing in the spare magazine , and for normal supply
If one piece of electronic components stored in the pallet pulled out from the magazine is out of parts, the pallet storing the electronic parts is stored in the magazine storage section.
The process of discharging to a replenishing unit provided above and then replenishing this pallet with new electronic components, and another pallet for storing electronic components of the same type as the electronic component are described above.
Supply method for an electronic component according to the tray feeder, characterized in that pull from the magazine for the preliminary and a degree Engineering supplied to the pickup position of the electronic component. 2. When the electronic component is used next time, the supplement
Electronic parts can be replenished to the pallets discharged to the supply section.
If you have already done so, palletize from the spare magazine.
Electronic parts already in the supply section without pulling out
2. A pallet that has been replenished is used.
A method for supplying electronic components by the described tray feeder.