JP2720515B2 - Electronic component supply method - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic component supply method for supplying a QFP (Quad Flat Package) type semiconductor or the like to a mounting machine or an inspection machine by a tray.

2. Description of the Related Art FIG. 1 shows an example of an electronic component supply device for supplying a QFP (electronic component) that is arranged without being fixed on a tray. FIG. 2 is a view for explaining a procedure in which a tray on which a QFP is arranged without being fixed is fixed to a plate and stored in a magazine. QF
The tray 2 on which the P1 is not fixed is set on the plate 3 and stored in the magazine 4 in a stacked manner at a certain interval. Therefore, the magazine 4 can store the types of QFPs by the number of plates. Next, in FIG. 1, the magazine 4 is driven to be positioned vertically by a servomotor. That is, the magazine 4 is positioned so that the plate 3 on which the QFP to be supplied next to the mounting machine is set is at a position where the plate 3 can be pulled out by the drawer 5. Then withdraw handle 5
Is started, the plate 3 is pulled out from the magazine 4, and the QFP1 is supplied to a component mounting machine or the like. At this time, the movement of the plate 3 by the drawer handle 5 was a constant speed, and the speed was controlled as shown in FIG.

Further, the positional relationship between the drawer handle 5 and the plate 3 is as shown in FIG. 4 immediately before the start of the drawer. That is, a certain interval A shown in FIG. 4 is required between the drawer handle 5 and the plate 3 stored in the magazine 4. This is because the magazine 4 moves up and down to perform positioning.

At this time, the pulling handle 5 is controlled by speed control as shown in FIG.
5, the light weight QFP1 on the tray fixed to the plate 3 is misaligned due to the horizontal impact when the drawer handle 5 contacts the plate 3 as shown in FIG. (Fig. 5b), there was a problem that the suction nozzle (not shown) could not suck the QFP well and did not function as a component supply device. Also,
Even during the drawing, vibration in the vertical direction is applied due to friction between the plate 3 and the magazine 4 and the like. In a light weight QFP1, this vibration also causes a displacement.

Problems to be Solved by the Invention As described above, conventionally, in the step of moving the plate with the drawer handle, the QFP on the tray is misaligned due to horizontal vibration when the drawer handle and the plate abut. . Alternatively, there is a problem that the QFP on the tray similarly shifts in position due to vertical vibrations caused by friction between the magazine and the plate during the movement of the plate and cannot be suctioned properly by the suction nozzle.

Means for Solving the Problems The technical means of the present invention for solving the above problems is to fix a tray on which electronic components are arranged to a plate, store the plate in a magazine at a certain interval, and store it in a stack. In an electronic component supply device in which a magazine is driven to move up and down and a plate is moved to a supply position by a drawer at a certain position, when the plate is moved by the drawer, the drawer contacts the plate. Is moved at a low speed, and after contact with the plate, is moved based on the maximum speed and the maximum acceleration preset for each electronic component arranged on the tray.

Operation The operation of this technical means is as follows.

That is, until the drawer handle contacts the plate
The drawer handle is moved at such a low speed that the electronic components on the tray are not displaced, and the electronic components on the tray fixed to the plate are not displaced by the horizontal impact at the time of contact.

In addition, there is a step of setting the maximum speed and the maximum acceleration during the movement of the drawer in advance according to the type of the electronic component,
By moving the plate according to the set value,
Electronic components can be supplied to a wide variety of electronic components in the shortest time without causing displacement on the tray.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 6 shows the speed control mode of the present invention in the step of moving the plate 3 by the drawer handle 5. The QFP1 on the tray is not used until the drawer 5 sufficiently contacts the plate 3 from the start of the drawer. Then, the drawer handle 5 is moved at such a low speed that does not cause a positional shift due to a horizontal impact at the time of abutment, and then moved at a high speed to complete the positioning in a short time.

The operation will be described with reference to FIG. 4. From the start of the movement of the drawer handle 5 to the distance A at which the drawer handle 5 sufficiently contacts the plate 3, the operation is performed on the tray fixed to the plate 3.
QFP1 moves at a low speed that does not cause positional displacement,
When the plate 3 and the drawer handle 5 have sufficiently contacted each other (moving distance A + α), the moving speed of the drawer handle 5 is increased, and the positioning is completed in a short time without displacement of the QFP.

FIG. 7 shows another embodiment of the present invention, in which the plate 3 is moved by the drawer handle 5, and the maximum speed and maximum acceleration of the moving speed are set in advance according to the type of QFP. FIG. 6 shows an example in which the plate 3 is moved according to the set value. That is, when the QFP on the tray is unlikely to be displaced due to vertical vibration or the like while the plate 3 is being pulled out by the drawer handle 5, speed control is performed at a high speed as indicated by the solid line, and conversely, In the case of a QFP that is likely to be displaced, speed control is performed at a relatively low speed, as indicated by the broken line, so that multiple types of QFs can be used.
QFP on the tray does not shift with respect to P, positioning of the drawer is completed in the shortest time, and QFP can be supplied efficiently.

The same can be said for the case where the plate is pushed in. That is, when pushing out the distance A + α for switching from low speed to high speed at the time of drawing, the distance may be (CB) + α.

Further, in this embodiment, the drawer handle moving distance A + α (or (CB) + α) at the time of drawing is set in advance,
Although the speed is changed, the speed can be changed, for example, by measuring the distance between the drawer and the plate with a gap sensor or the like.

Advantageous Effects of the Invention As is clear from the above description, according to the present invention, a tray on which electronic components are arranged is fixed to a plate, and the plate is stored in a magazine at a certain interval in a stacked manner, and the magazine is positioned vertically. In the electronic component supply device that drives and carries the plate to the supply position with a drawer at a fixed position, in the step of moving the plate with the drawer, the drawer is pulled at a low speed from the start of drawing until the drawer contacts the plate. After that, the electronic components that are not fixed on the tray are misaligned due to horizontal shock when the drawer handle contacts the plate or vertical vibration during the movement. Without this, it is possible to provide a stable supply and to supply various kinds of electronic components in an optimum and shortest time.

[Brief description of the drawings]

FIG. 1 is a perspective view of an electronic component supply device, FIG. 2 is an explanatory view showing a setting method of a tray on which electronic components are arranged in a magazine, and FIG. 3 is a conventional speed control method of a plate extracting process by a extracting handle. FIG. 4 is an explanatory view showing a positional relationship between a plate set to an electronic component supply device and a drawer handle, FIG. 5 is an explanatory view showing a state of a QFP on a tray, and FIG. 6 is a first embodiment of the present invention. FIG. 7 is an explanatory diagram showing a speed control method according to another example of the present invention, and FIG. 7 is an explanatory diagram showing a speed control method according to another example of the present invention. 1 QFP (electronic parts), 3 plates, 5 drawers.

Claims (1)

(57) [Claims] 1. A tray on which electronic components are arranged is fixed to a plate, and the plate is stored in a magazine in a stacked manner at a certain interval, and the magazine is positioned and driven up and down.
In the electronic component supply device for moving the plate to a supply position by a drawer at a fixed position, when the plate is moved by the drawer, the drawer is moved at a low speed until it comes into contact with the plate. And moving the electronic component based on a maximum speed and a maximum acceleration preset for each electronic component arranged on the tray after the contact with the plate.