JP2650983B2 - Electronic component supply method and device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention provides a component supply for mounting components on a component supply table provided in a component supply device to a predetermined position on a printed circuit board at high speed via a transfer mechanism. The present invention relates to a method and an apparatus, and more particularly to a component supply method and apparatus suitable for stably supplying a plurality of types of components from a plurality of component supply tables to a transfer mechanism.

[Conventional technology]

2. Description of the Related Art Conventionally, as described in Japanese Patent Application Laid-Open No. 61-239696, a component supply table for mounting various types of electronic components on a printed circuit board is divided into a plurality of component supply tables for mounting components provided on the apparatus. Then, only the necessary table is moved and positioned at a position facing the transfer device, and the components on the component supply table are mounted at predetermined positions on the printed circuit board via the transfer device. Was. According to the conventional component supply device configured as described above, the component supply table is divided, only the necessary table is moved, and the other tables are stationary. Can be added to the existing divided table, and the operation rate of the apparatus can be improved. Further, since the moving component supply table is one of the divided parts, the weight can be reduced, and the capacities of the drive unit and the control unit can be reduced.

[Problems to be solved by the invention]

However, according to the above prior art, a tape feeder that feeds a tape in which heavy components are continuously mounted on one component supply table and a tape feeder that feeds a tape in which light components are continuously mounted are attached. ing. The component supply table moves at high speed when supplying light components to the transfer mechanism, and moves at low speed when supplying heavy components. Therefore, when supplying light components, the tape feeder for heavy components mounted on the same table is also moving at high speed. In this case, the tape on which the heavy parts are mounted is heavy, so that a large inertia force acts on the tape feeder of the heavy parts, and there is a problem that a large strength is required for the parts supply table and its driving mechanism. If the component supply mechanism is a bulk feeder and the component supply table on which the bulk feeder is mounted is moved at a high speed, the components may jump out of the feeder or cause a jump, and can be transferred to the moving mechanism. There was also the problem of disappearing.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a component supply method and apparatus capable of preventing breakage of a component supply device and reliably supplying a plurality of types of components to a transfer mechanism. And

[Means for solving the problem]

In order to achieve the above object, a feature of the present invention is that a plurality of component supply tables capable of mounting a plurality of types of storage units storing electronic components and independently movable on a base, and an XY capable of mounting a printed circuit board. A table, and a transfer device for transferring electronic components in the storage unit to a predetermined location on the printed circuit board, wherein at least one of the plurality of component supply tables has a relatively light electronic component. Only a plurality of types of storage units storing components are mounted, and at least one of the other component supply tables includes a storage unit storing electronic components heavier than any of the electronic components mounted on the component supply table. After placing the storage unit, the component supply table, on which the storage unit containing the light electronic components is placed, is used to supply electronic components to the transfer device. The table moving speed or moving acceleration / deceleration when supplying electronic components to the transfer device from the component supply table on which the storage unit storing the heavy electronic components is placed, or An electronic component supply method for individually driving each of the component supply tables at an acceleration / deceleration.

Another feature of the present invention is that a plurality of component supply tables capable of mounting a plurality of types of storage units storing electronic components and independently movable on a base, an XY table capable of mounting a printed circuit board, and In an electronic component supply device including a transfer device that transfers electronic components in the storage unit to a predetermined location on the printed circuit board, at least one of the plurality of component supply tables has relatively light electronic components. A plurality of types of storage units accommodating components are configured to be mountable, and at least one of the other component supply tables includes a plurality of types of storage units accommodating electronic components heavier than the electronic components mounted on the component supply table. It is configured to be mountable,
The component supply table on which the storage unit containing only light electronic components is placed is moved more than the component supply table on which the storage unit containing heavy electronic components is placed. The electronic component supply device includes a control unit that individually moves each of the component supply tables so that the speed or the movement acceleration / deceleration increases.

A bulk feeder can be placed on a component supply table on which a storage unit containing heavy electronic components can be placed.

As described above, according to the present invention, the table moving speed or the moving acceleration / deceleration when supplying the electronic components from the component supply table on which the storage unit storing the light electronic components is placed to the transfer device, and the heavy electronic components are stored. Each of the component supply tables is individually driven at a speed or an acceleration / deceleration greater than a table moving speed or a moving acceleration / deceleration when supplying electronic components to the transfer device from the component supply table on which the stored storage units are mounted. Therefore, the component supply table on which the storage unit containing light electronic components is placed can be driven at high speed to efficiently supply electronic components to the transfer device, and the storage unit containing heavy electronic components Is driven at a low speed,
The inertial force acting on the heavy storage unit can be reduced, and the storage unit can be prevented from being damaged.

When a bulk feeder is used as the storage unit, the component supply table on which the bulk feeder is placed is driven at a low speed, so that the electronic components can be prevented from jumping out and dancing, thereby securely transferring the electronic components. Can be supplied to

[Embodiment of the invention]

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

1 to 6 show a component supply device used in this embodiment. FIGS. 1 and 2 show the overall configuration, in which a linear guide rail 2 is fixed on the apparatus main body 1, and a plurality of, for example, five component supply tables 3a are mounted on the guide rail 2. 3e are mounted movably in the directions of arrows AA. Tape feeders (storage units) 4a to 4e for supplying components are mounted on the component supply tables 3a to 3e, respectively, and the tape feeder 4 on which necessary components are mounted comes to a component delivery position P. As described above, the component supply table 3 is moved by the driving means (not shown).

A turntable (transfer device or index table) 5 is rotatably provided on the apparatus main body 1, and a plurality of nozzles 6 are attached to the outer periphery of the turntable 5. When one of these nozzles 6 is positioned at point P, the turntable 5 rotates after sucking the components in the tape feeder 4,
The nozzle 6 sucking this component via a component attitude correcting means (not shown) comes to the component mounting position M.
The printed circuit board 7 on which components are mounted is mounted on an XY table 8 provided on the apparatus main body 1. The XY table 8 moves to position the component mounting position on the printed circuit board 7 at the point M. Is done. When the printed circuit board 7 is positioned, the nozzle 6 releases the suction of the component, and the component is mounted at a predetermined position on the printed circuit board 7. By repeating this operation, components are sequentially mounted on the printed circuit board 7 at high speed.

3 and 4 show the structure of the tape feeder 4 supporting the small tape reel 10a and the large tape reel 10b around which the carrier tape 9 is wound, respectively. As shown in FIG. 5, the carrier tape 9 contains parts 11 in pockets formed continuously on the belt-shaped carrier tape 9 with a fixed pitch, and an upper tape 12 on the upper surface.
Is glued. The upper tape 12 prevents the component 11 from falling off the pocket.
The carrier tape 9 is wound around the tape reel 10, and the tape reel 10 is rotatably supported by the tape feeder 4. A lever 13 that is rotated in the direction of arrow BB by an external mechanism (not shown) is rotatably supported at a lower portion of the tape feeder 4 via a support shaft 14. A sprocket 15 is rotatably supported on the tape feeder 4. By reciprocating the lever 13 once in the BB direction, a ratchet claw 16 at the tip of the lever 13 is provided.
Engages with a gear portion on the outer periphery of the sprocket 15 to rotate the sprocket 15 at a predetermined angle. Then, the carrier tape 9 drawn out from the tape reel 10 is fed by the storage pitch of the component 11. At this time, the upper tape 12 adhered to the upper surface of the carrier tape 9 is peeled off and wound by the upper tape take-up reel 17 on the front side of the position at which the component 11 is sucked by the nozzle 6, that is, on the tape reel 10 side. In this state, the nozzle 6 descends to adsorb the component 11 in the pocket of the carrier tape 9, and after rotating the index table 5 on which the nozzle 6 is mounted, the nozzle 6 is positioned at the point M shown in FIG. Then, the suction of the component 11 by the nozzle 6 is released, and the component 11 is mounted at a predetermined position on the printed circuit board 7.

As shown in FIGS. 1 and 2, a plurality of the tape feeders 4 configured as described above are provided on the component supply table 3, and the tape feeders 4 containing the necessary components are moved to the suction position P point. The component supply table 3 is guided by the guide rail 2 and driven and controlled by a motor (not shown) and a linear drive mechanism such as a ball screw or a linear motor.

Next, a method for supplying the component 11 to a predetermined position on the printed circuit board 7 by the component supply device will be described. As shown in FIG. 5, the width W of the carrier tape 9 changes depending on the size of the component 11, and when the component 11 is small, W has a small value, and when the component 11 is large, W has a large value.
Therefore, the weight of the tape reel 10 around which the carrier tape 9 containing the large component 11 is wound becomes heavy. Tape feeders 4d and 4e supporting such heavy tape reels 10
Are attached collectively to the component supply tables 3d and 3e, respectively, as shown in FIG. 1 and FIG. At the same time, if there are tape feeders that are weak in strength, these are also supplied to the parts supply table.
Attach to 3d, 3e. Then, other light tape feeders 4a, 4b, 4c are attached to the component supply tables 3a, 3b, 3c, respectively. Even if the width W of the carrier tape 9 is the same, the tape reel 10b becomes heavy even when the diameter of the tape reel 10b is large as shown in FIG. 4, so that the tape feeders 4d, Attach via 4e.

FIG. 6 is a drive control configuration diagram of the component supply tables 3a to 3e. The component supply tables 3a to 3e are controlled by a controller (control means) 18 so as to be able to move at an arbitrary acceleration / deceleration or speed. I have. 7 and 8 show speed patterns when moving the component supply tables 3a to 3e. Fig. 7 shows a light tape reel 10a
8 shows the speed control pattern of the component supply tables 3a, 3b, 3c on which the heavy tape reel 10b is mounted, and FIG. 8 shows the speed control pattern of the component supply tables 3d, 3e on which the heavy tape reel 10b is mounted.
As shown in FIG. 7, the acceleration / deceleration b of the component supply tables 3d and 3e equipped with the heavy tape reels 10b is larger than the acceleration / deceleration a of the component supply tables 3a, 3b and 3c equipped with the light tape reels 10a. To reduce the absolute value.

FIG. 9 to FIG. 12 show another control method, in which control is performed by changing the maximum speed. 9 and 10 show velocity patterns, respectively, and FIGS. 11 and 12 show acceleration patterns, respectively, and FIGS. 9 and 11 show light tape reels 10.
If a is the component supply table 3a, 3b, 3c
FIG. 12 and FIG. 12 show the case of the component supply tables 3d and 3e on which the heavy tape reel 10b is mounted. When the movement of the component supply table 3 is controlled by a servo mechanism, the actual operation pattern is depressed as shown by a dotted line with respect to the command pattern shown by a solid line in FIGS. The absolute value of the actual acceleration / deceleration decreases as the maximum speed decreases. Therefore, when the maximum speed of the component supply tables 3d and 3e on which the heavy tape reel 10b is mounted is controlled to be low as shown by the solid line in FIG. 10, the absolute value of the actual acceleration / deceleration is indicated by the dotted line in FIG. It becomes smaller than the command value as shown.

According to the present embodiment, the tape feeders 4a, 4b, and 4c on which the light tape reels 10a are mounted are respectively connected to the component supply tables.
The tape feeders 4d and 4e, which are attached to 3a, 3b and 3c and have heavy tape reels 10b, respectively,
3e, the inertia force of the tape feeder 4 can be controlled by changing the movement acceleration / deceleration or speed of each component supply table 3, and damage to the tape feeder 4 and the like can be prevented.

FIG. 13 shows another embodiment of the present invention. In this embodiment, a bulk feeder 20 for supplying a bulk component 19 to the index table 5 shown in FIG. The bulk feeder 20 is a belt-type feeder, and the bulk component 19 is housed in a case 21. A conveyor belt 22 runs below the case 21, and the conveyor belt 22 is rotatably guided by three rotating bodies 23a, 23b, and 23c. The transport belt 22 is sandwiched between the rotating body 23a and the driving body 24,
The vehicle is driven in the direction of arrow D by the rotation in the direction of arrow C. A pressing plate 25 is provided on the upper surface of the conveyor belt 22 between the case 21 and the nozzle 6, and when the bulk components 19 are placed on the conveying belt 22 and moved, they are aligned by the pressing plate 25. Then, it stops at the position of the pocket 26 formed on the holding plate 25 immediately below the nozzle 6. The component 9 remaining at this position is sucked by the nozzle 6, and the next component 19 stops at the position of the pocket portion 26 again. In this way, the bulk feeder 20 supplies the bulk component 19 onto the index table 5.

The bulk feeder 20 is attached to the component supply tables 3d and 3e that move at low acceleration / deceleration or low speed. Accordingly, the inertia force acting on the bulk component 19 is reduced, and the component 19 may jump out of the case 21 or the pocket portion 26.
It is possible to prevent a situation in which the suction by the nozzle 6 becomes impossible due to the inside.

In each of the above embodiments, there are five component supply tables 3,
Although the case where three of them 3a, 3b, 3c move at high speed and the other two move at low speed has been described, it goes without saying that the number of these is not limited to that shown in this embodiment.
When all the tape feeders 4 on which the components are mounted are light, these tape feeders 4 may be attached to the component supply tables 3d and 3e which move at a low speed.

〔The invention's effect〕

As described above, according to the present invention, a table moving speed or a moving acceleration / deceleration when supplying electronic components from a component supply table on which a storage unit containing light electronic components is placed to a transfer device is reduced, and heavy electronic components are used. Each of the component supply tables is individually driven at a speed or an acceleration / deceleration greater than a table moving speed or a moving acceleration / deceleration at the time of supplying electronic components from the component supply table on which the storage unit storing the components is placed to the transfer device. Therefore, the component supply table on which the storage unit containing light electronic components is placed can be driven at high speed to efficiently supply electronic components to the transfer device. Since the parts supply table on which the units are mounted is driven at a low speed,
This has the effect of reducing the inertial force acting on the heavy storage unit and preventing damage to the heavy storage unit.

When a bulk feeder is used as the storage unit, the component supply table on which the bulk feeder is placed is driven at a low speed, so that the electronic components can be prevented from jumping out and dancing, thereby securely transferring the electronic components. There is an effect that can be supplied.

[Brief description of the drawings]

FIG. 1 is a plan view showing an example of a component supply device used in the component supply method according to the present invention, FIG. 2 is a perspective view of FIG. 1, and FIGS. 3 and 4 show the tape feeder of FIG. FIG. 5 is a partial perspective view showing the carrier tape of FIG. 3, FIG. 6 is a control configuration diagram of a component supply table, and FIGS.
FIG. 12 is a graph showing a pattern of control speed and control acceleration of the component supply table according to the present embodiment, and FIG. 13 is a longitudinal sectional view showing a bulk feeder used in another embodiment of the present invention. 3 ... part supply table, 4 ... tape feeder (storage unit), 5,6 ... transfer device (5 ... turntable, 6 ... nozzle), 7 ... printed circuit board, 8 ... XY table, 11, 19: electronic components, 18: controller (control means), 20: bulk feeder (storage unit).

Claims (3)

(57) [Claims] A plurality of component supply tables on which a plurality of types of storage units accommodating electronic components can be placed and independently movable on a base; an XY table on which a printed circuit board can be placed;
And a transfer device for transferring electronic components in the storage unit to a predetermined location on the printed circuit board, wherein at least one of the plurality of component supply tables includes a relatively light electronic component. A plurality of types of stored storage units alone are placed, and at least one of the other
After mounting a plurality of storage units including a storage unit storing electronic components heavier than any of the electronic components mounted on the component supply table on the table, the storage unit storing the lighter electronic components was mounted. The table moving speed or the moving acceleration / deceleration when supplying the electronic components from the component supply table to the transfer device, the electronic components from the component supply table on which the storage unit storing the heavy electronic components is placed to the transfer device. An electronic component supply method, wherein each of the component supply tables is individually driven at a speed or an acceleration / deceleration greater than a table movement speed or a movement acceleration / deceleration at the time of supply. 2. A plurality of component supply tables on which a plurality of types of storage units storing electronic components can be placed and independently movable on a base; an XY table on which a printed circuit board can be placed;
And an electronic component supply device having a transfer device for transferring electronic components in the storage unit to a predetermined location on the printed circuit board, wherein at least one of the plurality of component supply tables is relatively light. A plurality of types of storage units storing electronic components can be mounted, and at least one of the other component supply tables includes a plurality of storage units storing electronic components heavier than the electronic components mounted on the component supply table. The component supply table in which the storage units storing only the light electronic components are mounted is more electronically mounted on the transfer device than the component supply table in which the storage units storing the heavy electronic components are mounted. Control means for individually moving each of the component supply tables so that the table moving speed or the moving acceleration / deceleration when supplying the components is increased. An electronic component supply device, characterized in that: 3. The electronic component supply device according to claim 2, wherein a bulk feeder can be placed on a component supply table on which a storage unit storing the heavy electronic components can be placed.