JPH02301197A - Supply method of electronic components - Google Patents

Abstract

PURPOSE:In the process to shift a plate by a pulling handle, to enable various electronic components to be supplied in the optimum shortest time without causing dislocation by shifting the pulling handle at low speed until the pulling handle abuts on the plate after pulling-out start, and then shifting it at a high speed. CONSTITUTION:A QFP (electronic part) 1 on the tray fixed to a plate 3 is shifted at a level of low speed that it does not cause dislocation up to distance A where a pulling handle 5 abuts enough on the plate 3 from shift start of the pulling handle 5, and at a point of time (shifts distance A+alpha) when the plate 3 and the pulling handle 5 have abutted enough on each other, the shifting speed of the pulling handle 5 is made high-speed, and the positioning is completed in a short time without dislocation of the QFP. That is, until the pulling handle 5 abuts on the plate 3, the pulling handle 5 is shifted at a level of low speed that the electronic component on the tray does not cause dislocation, and the electronic parts on the tray fixed to the plate 3 cease to cause dislocation by the horizontal shock at the time of abutment.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is applied to QFP (Quad Flat Pack).
The present invention relates to an electronic component supply method for supplying electronic component type semiconductors and the like to a mounting machine or an inspection machine using a tray.

FIG. 1 shows an example of a conventional electronic component supply device that supplies QFPs (electronic components) placed without being fixed on a tray. Second
The figure explains the procedure for fixing a tray arranged without fixing a QFP to a plate and storing it in a magazine. Tray 2 with QFPI placed without being fixed is placed on plate 3.
They are then stored in the magazine 4 in stacks at certain intervals.

Therefore, the magazine 4 can store as many types of QFP as there are plates. Next, in FIG. 1, the magazine 4 is positioned and driven in the vertical direction by a servo motor. That is, the plate 3 on which the QFP to be supplied next to the mounting machine is set is in a position where it can be pulled out using the drawer handle 5.
The magazine 4 is positioned so that the After that, the drawer handle 5 starts to move, the plate 3 is pulled out from the magazine 4, and the QFPI is supplied to a component mounting machine or the like. At this time, the plate 3 was moved at a constant speed by the drawer handle 5, 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 drawing. That is, a certain distance A shown in FIG. 4 is required between the drawer handle 5 and the plate 3 housed in the magazine 4. This is because the magazine 4 moves up and down to perform positioning.

At this time, if the drawer handle 5 is moved under speed control as shown in Fig. 3, it will be fixed to the plate 3 due to the horizontal impact when it contacts the plate 3 as shown in Fig. 5. The light and heavy QFPI on the tray becomes misaligned (Fig. 5b), and the suction nozzle (not shown) is unable to suction the QFP properly, so it does not function as a parts supply device. There was a problem. Further, even during withdrawal, vibrations in the vertical direction are applied due to friction between the plate 3 and the magazine 4, etc. In light weight QFPIs, this vibration also causes positional deviation.

As described above, the problems that the invention sought to solve (in the past, in the process of moving the plate using the drawer handle, the QFP on the tray would be misaligned due to horizontal vibrations when the drawer handle and the plate came into contact with each other). Alternatively, vertical vibrations caused by friction between the magazine and the plate while the plate is moving may cause the QFP on the tray to shift its position, resulting in the problem that the suction nozzle cannot suction the QFP properly.

Means for Solving the Problems The technical means of the present invention for solving the above-mentioned problems is to move the drawer handle at low speed until the drawer handle contacts the plate in the step of moving the plate by the drawer handle, Then move it at high speed.

Further, depending on the type of electronic component, there is a step of setting the maximum speed and maximum acceleration at high speed in advance, and the plate is moved according to the set values.

action The effect of this technical means is as follows.

In other words, until the drawer handle makes contact with the plate, the drawer handle is moved at a low speed that does not cause the electronic components on the tray to shift, and the horizontal impact at the time of contact causes the tray fixed to the plate to move. The electronic components will not be misaligned.

In addition, we have a process in which the maximum speed and maximum acceleration when moving the drawer handle are set to optimal values in advance depending on the type of electronic components, and by moving the plate according to the set values, the tray can be used for a wide variety of electronic components. Electronic components can be supplied in the shortest possible time without causing any misalignment on the top.

Example Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 6 shows the speed control mode of the present invention in the process of moving the plate 3 using the drawer handle 5. From the start of the drawer until the drawer handle 5 sufficiently contacts the plate 3, the QFPI on the tray is , the drawer handle 5 is moved at a low speed that does not cause positional deviation due to the horizontal impact at the time of contact, and then moved at a high speed to complete positioning in a short time.

The operation will be explained with reference to FIG. 4. From the start of movement of the drawer handle 5 until the distance +1A where the drawer handle 5 sufficiently contacts the plate 3, the QFPI on the tray, which is fixed to the plate 3, will not shift in position. When the plate 3 and the drawer handle 5 are in sufficient contact (wear distance mA + α), the moving speed of the drawer handle 5 is increased,
The positioning of the QFP has been completed in a short time.

FIG. 7 shows another embodiment of the present invention, in which the step of moving the plate 3 with the drawer handle 5 includes a step of setting the maximum speed and maximum acceleration of the moving speed in advance according to the type of QFP. This example shows a case where the plate 3 is moved according to the set value. That is, the drawer handle 5
When the plate 3 is being pulled out, if the QFP on the tray is not likely to be misaligned due to vertical vibration, etc., the speed is controlled at a high speed as shown by the solid line. In this case, by controlling the speed at a relatively low speed as shown by the broken line,
For a wide variety of QFPs, the QFP on the tray does not shift its position, and the positioning of each drawer handle can be completed in the shortest possible time.
It becomes possible to efficiently supply QFP.

Furthermore, the same thing can be said when pressing the play [・]. That is, when pushing in the distance A+α for switching from low speed to high speed during withdrawal, the distance may be (CB)+α.

Furthermore, in this embodiment, the speed is changed by setting the drawer handle moving distance A+α (or (CB)+α) in advance when drawing the drawer. It is also possible to measure and change the speed.

Effects of the Invention As is clear from the above explanation, according to the present invention, a tray on which electronic components are arranged is fixed to a plate, the plates are stored in a magazine in a stacked manner with a certain interval, and the magazine is positioned vertically. In the process of moving the plate with the drawer handle in an electronic component supply device that drives the plate and transports the plate to the supply position with the drawer handle at a fixed position, the drawer handle is moved at a low speed from the start of the drawer until the drawer handle abuts the plate. and then at high speed, electronic components that are not fixed on the tray may be misaligned due to horizontal impact when the drawer handle and plate come into contact, or vertical vibrations during movement. This makes it possible to provide a stable supply without causing any problems, and to supply a wide variety of electronic components in the shortest possible time.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an electronic component supply device, Fig. 2 is an explanatory diagram showing a method of setting a tray with electronic components in a magazine, and Fig. 3 is a conventional speed control method of the plate drawing process using a drawer handle. FIG. 4 is an explanatory diagram showing the positional relationship between the plate set in the electronic component supply device and the drawer handle. FIG. 5 is an explanatory diagram showing the state of the QFP on the tray. Velocity II according to the first example
FIG. 7 is an explanatory diagram showing a speed control method according to another example of the present invention. 1...QFP (electronic parts), 3...
Plate, 5...Drawer handle. Name of agent Patent attorney Shigetaka Awano One idiot 4 --- Magazine Figure 3 / QFP
Figure 4 Figure 15

Claims (2)

[Claims] (1) Fix the tray with electronic components placed on the plate,
In an electronic component supply device, the plates are stored in a stacked manner at a certain interval in a magazine, the magazine is driven to position up and down, and the plate is conveyed to a supply position by a drawer handle at a fixed position. In the moving step, the drawer handle is moved at a low speed from the start of the drawer until the drawer handle abuts the plate, and after the drawer handle abuts the plate, the drawer handle is moved at a high speed. electronic component supply method. (2) A patent characterized in that the step of moving the plate with the drawer handle includes a step of setting the maximum speed and maximum acceleration of the plate in advance for each electronic component, and the drawer handle is moved based on the set values. An electronic component supply method according to claim 1.