JPH07249554A - Method of handling electronic part - Google Patents

Abstract

PURPOSE:To alighworks on a nest plate without fail by a simple method thereby facilitating the later processes for forming electrodes on the surface of the works by coating. CONSTITUTION:After properly arranging works 4 temporarily one by one in plural cavities 2 on the surface of a nest plate 1, air is blown from through holes 3 beneath the cavities 2 for a specific time so as to once float respective works 4 to be precisely contained in the cavities 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention regularly arranges electronic parts on a plate so that a large number of electronic parts can be worked at one time when electrodes are formed by coating on the surface of the electronic parts. It relates to a method of aligning.

[0002]

2. Description of the Related Art In the manufacture of electronic parts having electrodes on both sides of a disk-shaped unit such as a ceramic capacitor, a nest plate is used as a jig for carrying and positioning the unit when printing electrodes. The nest plate 1 shown in FIG. 4 is made of a metal plate-like body, and a plurality of cavities 2 which are circular concave portions for accommodating electronic parts are arranged on one main surface of each of the cavities. A through hole 3 is provided on the bottom surface of the tee 2.

In each of the cavities 2, a disk element (hereinafter, referred to as a work) forming a ceramic capacitor or the like is housed and aligned one by one, and the nest plate 1 and the nest plate 1 are conveyed by a conveyer such as a conveyor to a printing machine. Transport to
Intake pressure is applied downward from the through hole 3 to fix the work, and a squeegee, a roller, or a brush is run on the upper surface of the nest plate 1 to apply and print electrodes on a large number of works. Further, in addition to the electrode formation, work such as symbol display, measurement, or automatic taping was performed efficiently with a large number of works arranged on the nest plate.

Conventionally, the work is stored in the nest plate 1 by feeding a large number of works from the upper portion of the nest plate 1 and then accurately storing the work in the cavity 2 by a manual operation or a jig. , As shown in FIG.
There is a case where all the works 4 are not housed in the cavity 2 in a normal state, but are placed out of the cavity 2. Further, when the nest plate 1 containing the work 4 is transported, the work 4 is vibrated by vibration of a transport device such as a conveyor.
There was a case where the deviation became even larger, or the work 4 that had been normally stored jumped out.

As shown in the sectional view of FIG. 6, when the work 4 is displaced from the cavity 2, not only printing failure occurs at the time of forming electrodes, but also the work 4 protrudes from the cavity 2. There arises inconveniences such as a portion blocking movement of rollers and the like, and the work 4 being damaged.

It takes a lot of work to fit the works 4 that have been removed from the cavities 2 into the normal positions one by one before the printing work, but the works 4 protruding above the cavities 2 are required. The chisel can also be blown off and removed. However, there is a problem in that the electrode material enters the cavity 2 from which the work 4 has been removed during the subsequent electrode formation, and the inside of the cavity 2 is contaminated.

Therefore, a vibration having an amplitude of 1 to 2 mm at a frequency of 60 to 100 Hz is applied to the nest plate 1 after the work 4 has been shaken and appropriately provisionally arranged for a few seconds from one direction or two directions to cause a deviation. The work 4 is vibrated and guided to a normal position where it is completely housed in the cavity 2.

[0008]

However, this method has the following drawbacks. That is, since the deviation directions of the works do not match among the works, there are some works that cannot be corrected depending on the conditions of the deviation direction and the amplitude direction, and the deviation increases. Further, although automatic control of the frequency and amplitude by the electromagnetic vibration method requires a high equipment cost, there is a drawback that the correction rate is not necessarily high as described above.

Therefore, an object of the present invention is to provide a method of handling electronic parts, in which all the works are surely housed and aligned in the cavities on the nest plate by a simple method so that the subsequent work can be performed easily. To provide.

[0010]

In order to solve the above-mentioned problems, the present invention accommodates and aligns electronic components one by one in a plurality of concave portions arranged on the upper surface of a plate, and the concave portions are arranged. In a method of handling an electronic component in which electronic components are fixed by sucking air from a through hole provided in the bottom surface of the electronic component, after the electronic component is temporarily placed on the concave portion, air is blown from the through hole for a certain period of time. A method of handling an electronic component is characterized in that the electronic component is temporarily floated and then housed in the concave portion.

[0011]

The work separated from the cavity is blown upward by the air blown from the through hole in the bottom of the cavity together with the work that is normally stored. At this time, the air blown out from the through hole uniformly blows out between the inner wall surface of the cavity and the periphery of the work and blows out to the outside, so that the work floats in a horizontal state right above the cavity. After that, if you stop blowing air,
The work located directly above the cavity falls due to gravity and is accurately stored in the cavity.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS. 1 to 3, and the same parts as those in the conventional example are designated by the same reference numerals.

FIG. 1 is a cross-sectional view of the vicinity of a nest plate of an apparatus used in the present invention. The nest plate 1 has a cavity 2 which is a circular concave portion for accommodating a work on the surface thereof as in the conventional nest plate. A large number of holes are regularly arranged, and a through hole 3 is formed in the center of the bottom surface of each cavity 2.
Is provided.

The nest plate 1 is placed on a box body 6 having an open upper portion to which an air pipe 5 for supplying and sucking air is connected, and a closed space is formed below the nest plate 1. In addition, the perforated plate 7 divides the space between the nest plate 1 and the air pipe 5,
The air supplied from the air pipe 5 by this perforated plate 7 is made to flow uniformly over the entire nest plate 1 and each cavity 2
The flow rate of air becomes the same.

In order to align the works 4 on the nest plate 1, first, a large number of works 4 are placed on the nest plate 1 by a transfer method or the like, and one electronic component is temporarily associated with each cavity 2 by an appropriate means. Although arranged, the work 4 which is not accurately stored at this point and has a projecting portion on the nest plate 1 may be present.

Next, by supplying air from the air pipe 5 to the closed space below the nest plate 1, the air is blown out from the through hole 3 on the bottom surface of the cavity 2 and all the workpieces 4 are floated in the air. Center just above 2. After that, when the air supply from the air pipe 5 is stopped, the work 4 falls so as to be accurately stored in the cavity 2.

FIG. 2 shows an air supply / intake mechanism. First, the air supply mechanism 8 is controlled to supply / stop air to the nest plate 1 through the air pipe 5.
After the position of the work 4 is corrected, the valve is switched and the suction mechanism 9 is operated to apply suction pressure to the nest plate 1 through the air pipe 5 as in the conventional example, and the suction pressure is applied through the through hole 3 to the cavity of the work 4 through the through hole 3. Fix in 2

It is sufficient to supply the air for correcting the position of the work 4 only once for several seconds, but the time and the number of times are not particularly limited. However, if the work 4 is floated for a long time in order to further improve the straightening rate, the cavity 2 may come off the sky position. In this case, air is blown and stopped for a short time. It is preferable to perform intermittent supply by repeating the above procedure several times.

As shown in FIG. 3, the principle of correcting the positional deviation of the work 4 according to the present invention utilizes a phenomenon in which air tries to evenly escape between the nest plate 1 and the work 4, and the cavity 2 is used. When the air 10 blows out from the through hole 3 to the work 4 inside, the air 10 blows up the work 4 onto the cavity 2 and at the same time passes through the space between the cavity 2 and the work 4 and is discharged to the outside. , Work 4
Is floating above the center of the cavity 2 while maintaining a horizontal state.

Further, as a first step, the work 4 is floated above the cavity 2 by the above-mentioned large flow rate of air 10 to perform rough adjustment, and then, as a second step, the work 4 is floated in the cavity 2. Small flow of air 11
If the air is controlled so as to make a fine adjustment with, the correction rate can be further improved.

Using the method of the present invention, the diameter is 3.5 m.
The results shown in Table 1 were obtained by conducting a straightening experiment on two types of workpieces having a disk shape of m and 8.0 mm.

[0022]

[Table 1]

Although the disk-shaped work is used in the above-mentioned embodiment, the work shape to which the present invention can be applied is not limited to the disk-shaped work, and it can be applied to a work having another shape such as a square or a rectangle. The correction rate can be improved.

[0024]

As described above, according to the present invention, the positional deviation between the work and the cavity is corrected by blowing air from the bottom of the cavity. There is no problem that the work from which the deviation from the cavity expands conversely expands, and the correction rate becomes high. For example, in the case of a work of φ6.0 mm, which was impossible with the conventional vibration method, a positional deviation of ± 2 mm But the correction is possible. In addition, the correction rate could reach 99.99% at the mass production stage.

Further, since the through hole for intake which has been conventionally used for fixing the work can be used as it is and only the flow rate of the blown air is controlled, the control is performed as compared with the electromagnetic vibration method. There is also an effect that the method is simple and the cost is low.

[Brief description of drawings]

FIG. 1 is a sectional view of a device used in the method of the present invention in the vicinity of a nest plate.

FIG. 2 is a front view showing an air supply and intake mechanism for a nest plate.

FIG. 3 is a partial cross-sectional view in the vicinity of a cavity showing the principle of correcting the positional deviation of the work according to the present invention.

FIG. 4 is a perspective view of a nest plate.

FIG. 5 is a partially enlarged view of a nest plate in which a work having a positional deviation exists.

FIG. 6 is a partial cross-sectional view of a nest plate in which a work having a positional deviation exists.

[Explanation of symbols]

 1 Nest plate 2 Cavity 3 Through hole 4 Work piece 10, 11 Air

Claims (1)

[Claims] 1. An electronic component is housed in a plurality of concave portions arranged on the upper surface of a plate so as to be aligned, and air is sucked from a through hole provided in the bottom surface of the concave portion to form an electronic component. In the method of handling an electronic component to be fixed, after the electronic component is temporarily placed on the concave portion, air is blown from the through hole for a certain period of time to float each electronic component once and then stored in the concave portion. How to handle electronic components.