JP2935384B2 - Jig for visual inspection of chip-shaped circuit components - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jig used for rotating a chip-like circuit component arranged and adhered on an adhesive tape and inspecting the appearance with a microscope or the like.

[0002]

2. Description of the Related Art Small chip components mounted on a circuit board may be individually tested after being mass-produced. The items of the inspection are, for example, the appearance of the chip component or the shape of the terminal, and these are inspected using a microscope, a magnifying glass, or the like. Conventionally, when inspecting the appearance of such a chip-shaped circuit component, the chip-shaped circuit component is picked up one by one with tweezers, moved to the end of the objective lens of the microscope, and moved to the tip of the tweezers. The method has been performed by observing with a microscope a plurality of directions while rotating.

[0003]

However, the operation of picking up small chip-shaped circuit components one by one with tweezers and observing them one by one is a fine operation and extremely troublesome.
In addition, since the depth of field of the microscope is shallow, when rotating the chip-shaped circuit component beyond the tweezers, the position of the chip-shaped circuit component moves and easily shifts from the focus of the microscope. Or adjust the focus of the microscope. For this reason, the efficiency of the inspection was very poor. An object of the present invention is to solve such a conventional problem and to provide a visual inspection jig capable of efficiently observing a large number of chip-shaped circuit components from all directions.

[0004]

That is, in the present invention,
In order to achieve the above object, a rotating member having a surface formed with a groove through which a long adhesive tape in which chip-shaped circuit components are arranged and pasted, and the rotating member having the center of the groove as a rotation center axis. A jig for inspecting the appearance of a chip-shaped circuit component, comprising: a rotation support member rotatably held.

[0005]

In the jig according to the present invention, the chip-shaped circuit components are arranged in a line on a long tape and fixed, and the tape is passed through the groove of the rotating member. And observe them sequentially. At this time, when rotating the rotating member supported by the rotating support member,
Since the rotating member rotates around the center of the groove through which the chip-shaped circuit component passes, the chip-shaped circuit component on the tape rotates while being at a fixed position. Therefore, the chip-shaped circuit component can be observed from any direction without deviating from the focus of the microscope. By rotating the rotating member while sequentially feeding the tape along the groove and observing with a microscope, it is possible to sequentially inspect the appearance of a plurality of chip-shaped circuit components.

[0006]

Next, an embodiment of the present invention will be described in detail with reference to the drawings. As shown in FIGS. 1 to 3, the jig of the present invention mainly includes the rotation support member 2 and the rotation member 4. The rotation support member 2 is made of, for example, a metal such as steel, stainless steel, or aluminum, and has a concentric cylindrical surface with a common central axis on the inner and outer peripheral surfaces. In particular, the inner peripheral surface has a smooth surface. ing. There is no lower half, and it is open upward. Further, a center portion of the peripheral wall of the support member 2 is provided with an oblong guide hole 3 over about 180 °.

The rotating member 4 has a semicylindrical surface and a flat surface having an outer surface formed by a semi-cylindrical surface and a flat surface. The rotating member 4 is fitted on the inner peripheral side of the rotation supporting member 2. In this state, the center axes of the rotation member 4 and the rotation support member 2 are aligned with each other, and the rotation member 4 comes into close contact so that the semi-cylindrical surface slides on the inner peripheral surface of the rotation support member 2. By the sliding of these surfaces, the rotary support member 2 is rotatably supported around the central axis. The illustrated rotating member 4 is formed by assembling an inner central member 5 and an outer peripheral member 6 so that the whole is in a semi-cylindrical shape. On the plane side of the center member 5 and the circumferential member 6, rod-shaped connecting members 7 are applied to both ends thereof, and both ends of the connecting member 7 are fixed to the outer peripheral member 6 with bolts. And outer member 6
And are fixed so that they do not move with each other.

The center member 5 is made of, for example, a fluorine-based resin, and has a groove 8 for passing an adhesive tape T, which will be described later, along the center axis of the rotating member 4 at the center of the plane. This groove 8 is a wide groove on the side of the rectangular end face, and its depth is
The height is about half of the height of the chip-shaped circuit component a to be inspected later. The connecting member 7 fixed so as to pass over the groove 8 across the outer peripheral member is provided with a notch 9 corresponding to the portion of the groove 8.

On the other hand, the outer peripheral member 6 is made of, for example, the same metal material as that of the rotary support member 3, and its outer peripheral surface has a fitting dimension slidable with respect to the inner peripheral surface of the rotary support member 3. And smooth finish, the rotation support member 3
Are supported in such a manner that there is no allowance in the radial direction and that they rotate smoothly. Further, an arm 11 projects radially from the center of the peripheral surface of the outer peripheral member 6, and the arm 11 penetrates the guide hole 3 of the rotation support member 2, and has a tip outside the rotation support member 2. It protrudes. Further, rollers 12 are rotatably mounted on both sides of the tip of an arm 11 protruding outside the rotation supporting member 2, and these rollers 12 rotatably abut on the outer peripheral surface of the rotation supporting member 2. The roller 12 comes into rolling contact with the outer peripheral surface of the rotation support member 2, thereby smoothing the rotation of the rotation member 4 and suppressing a radial margin between the rotation support member 4 and the rotation support member 2. To prevent backlash.
In addition, the guide hole 3 is formed at about 180 of the peripheral wall of the rotation support member 2.
The rotation member 4 is rotatable in that range because the rotation member 4 is provided for the part of the angle. In FIG. 3, the rollers 12 are indicated by two-dot chain lines on both the left and right sides. When the rollers 12 are in this position, the plane of the rotating member 4 is vertically vertical, and the rotating member 4 can rotate within that range. It is.

As is clear from FIGS. 1 and 2, a lever 10 is attached to one end surface of the outer peripheral member 6 of the rotating member 4. The lever 10 is a cylindrical member, and is fixed to one end surface of the outer peripheral member 6 so that the center axis thereof is located on the extension of the center axis of the rotating member 4.
A part of the outer peripheral wall of the lever 10,
Is facing upward, and the upward facing portion is vertically opened like a slit. This lever 10 is shown by an arrow R in FIG.
When rotated as shown by the arrow, the rotating member 4 rotates around its central axis as shown by the arrow r in FIG. The rotation support member 2 includes a pair of parallel side L-shaped side plates 1, 1.
Further, the side plates 1, 1 are bolted to the end surface of the support member 2 between the end surfaces. The side plates 1 and 1 also come into contact with the outer peripheral portion of the outer peripheral member 6 of the rotating member 4 and sandwich the outer peripheral member 6 from both end surfaces. Thereby, the rotating member 4 is rotatably held so as not to come off from the end face of the rotation supporting member 2. As will be described later, the side plates 1 and 1 are members used for installing the illustrated observation jig on a frame or the like, and both side plates are completely parallel, and the lower surfaces thereof are mutually extended flat surfaces. It's above.

A case where the appearance of a chip-shaped circuit component a as shown in FIG. 7 is inspected with a microscope using such a jig will be described below. The chip-shaped circuit component a shown in FIG. 7 has a cubic outer shape, and has a pair of electrodes b, b from both end surfaces to the bottom surface. This chip-shaped circuit component a is used for visual inspection using the jig.
An upper surface side having no electrode is pasted on the adhesive surface of the adhesive tape T in advance, and is fixed in a line. The adhesive tape T has a width slightly smaller than the groove 8 of the rotating member 4, and the chip-shaped circuit component a is attached to the center thereof. The adhesive tape T is preferably a transparent tape if possible.

On the other hand, the jig is set, for example, as shown in FIG. That is, by standing upright on the base 48 using the side plates 1, 1, the microscope 4 is placed at the center of the groove 8.
The microscope 41 is installed immediately below the objective lens of the microscope 41 so that the observation area 1 is located and the optical axis of the microscope 41 is orthogonal to the rotation axis of the rotating member 4. Further, the groove 8 on the base 48
And an unwinding roll 44 for unwinding the adhesive tape T on which the chip-shaped circuit components a are arranged and adhered as described above, and a guide roller 4 for guiding the adhesive tape T.
2, 43 are arranged. On the other extension of the groove 8, a take-up roll 47 for winding the adhesive tape T and guide rollers 45 and 46 are arranged. Then, the adhesive tape T unwound from the unwinding roll 44 passes through the guide rollers 42 and 43, and then passes through the groove 8 of the rotating member 4 at the jig portion, and further passes through the guide rollers 45 and 46.
Then, the film is wound up by a winding roll 47. in this case,
As is clear from FIGS. 1 and 3, the grooves 8 are arranged with the chip-shaped circuit component a side facing up and adhered to the adhesive surface of the adhesive tape T.
Pass through. As described above, since the depth of the groove 8 is about half the height of the chip-shaped circuit component a, the approximate center of the chip-shaped circuit component a passing through the groove 8 passes through the central axis of the rotating member 4.

In this manner, the adhesive tape T is passed through the groove 8 of the rotating member 4, and the adhesive tape T is sent from the unwinding roll 44 to the winding roll 47, and the chip-shaped circuit component a thereon is placed on the microscope 41 by the microscope 41. Focusing is performed, and the chip-shaped circuit components a are sequentially observed. Then, by rotating the lever 10 manually or the like, the rotating member 4 rotates around the center of the chip-shaped circuit component a. Thereby, the adhesive tape T
Although it is twisted before and after the groove 8, at the observation position with the microscope 41,
The chip-shaped circuit component a rotates while being held in the groove 8, and its orientation with respect to the microscope 41 is changed. Since the rotating member 4 rotates around the center of the chip-shaped circuit component a, the distance between the objective lens of the microscope 41 and the chip-shaped circuit component a does not change during the rotation, so that the chip-shaped circuit component a is moved from the focal point of the microscope. There is no shift. Thus, while changing the direction of the chip-shaped circuit component a by 180 °, the microscope 4
It is possible to observe and inspect the appearance in step 1.

In the above-described embodiment, the rotation supporting member 2 is a cylindrical member that supports the outer peripheral side of the rotating member 4. For example, the rotation supporting member 2 is a shaft member that rotatably supports the center of the rotating member 4. It may be. That is, in the embodiments shown in FIGS. 5 and 6, the rotation support member 4 is a shaft pin 2 which is a rotation support member attached to both end surfaces on the center axis thereof.
2 'is rotatably supported by the side plates 1 and 1 so as to be rotatable about a central axis. One shaft pin 2 ′ is fixed to the center of the lever 10.
However, in this case, since the groove 8 must be provided so as to avoid the shaft pins 2 ′ and 2 ′, the groove 8 of the rotating member 4 is rotated at the central portion of the rotating member 4 where the microscope 41 is to observe. Although formed along the rotation center axis of the member 4,
Before and after that, the groove 8 is provided with a gradient. That is, FIG.
Then, the adhesive tape T is inserted into the groove 8 just before the center of the rotating member 4.
Has a negative gradient with respect to the direction of travel, and the groove 8 has a positive gradient before the center of the rotating member 4. In FIG. 6, the opposite is true. Further, in the above-described embodiment, the rotating member 4 is manually rotated by the lever 10. However, the rotating member 4 is connected to another reciprocating rotating mechanism, and the rotating member 4 is automatically combined with the automatic feeding means of the adhesive tape T. May be automatically rotated.

[0015]

As described above, by using the jig for inspecting the appearance of chip-shaped circuit components according to the present invention, it is possible to rotate a plurality of chip-shaped circuit components while sequentially feeding them, and observe them from all directions. . In addition, since observation can be performed while changing the direction of the chip-shaped circuit component without changing the distance from the objective lens of the microscope, efficient appearance inspection can be performed.

[Brief description of the drawings]

FIG. 1 is a perspective view of a jig for inspecting the appearance of a chip-shaped circuit component according to an embodiment of the present invention.

FIG. 2 is a side view of a jig for inspecting appearance of a chip-shaped circuit component according to the embodiment.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a side view showing an example of use of the jig for inspecting the appearance of chip-shaped circuit components.

FIG. 5 is a side view of a jig for inspecting the appearance of a chip-shaped circuit component according to another embodiment of the present invention.

FIG. 6 is a side view of a jig for inspecting appearance of a chip-shaped circuit component according to still another embodiment of the present invention.

FIG. 7 is a perspective view showing an example of the state of the chip-shaped circuit component when the appearance of the chip-shaped circuit component is inspected using the jig for inspecting the appearance of the chip-shaped circuit component according to the embodiment of the present invention.

[Explanation of symbols]

 2 Rotation support member 4 Rotation member 8 Groove a Chip-shaped circuit component T Adhesive tape

Claims (1)

(57) [Claims] 1. A jig for inspecting the appearance of a chip-shaped circuit component, comprising: a rotating member having a surface formed with a groove through which a long adhesive tape in which the chip-shaped circuit components are arranged and adhered; A jig for inspecting the appearance of a chip-shaped circuit component, comprising: a rotation support member for rotatably holding the rotation member around a center of the groove as a rotation center axis.