JP3726532B2 - Appearance inspection device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an appearance inspection apparatus for electronic parts and the like.
[0002]
[Prior art]
The appearance inspection of electronic parts and the like has been performed by irradiating the electronic parts with light from the illumination means while holding the parts on the conveying means and inputting appearance information to the camera.
[0003]
[Problems to be solved by the invention]
Since the electronic parts and the like have an upper surface, a lower surface, and an outer peripheral surface, in order to inspect all of them, it is necessary to change the holding posture of the components held by the transport means, It was bad.
[0004]
Therefore, the present invention aims to improve the workability of appearance inspection.
[0005]
[Means for Solving the Problems]
In order to achieve this object, the present invention provides a conveyor belt having openings at predetermined intervals, a tape affixed to the opening of the conveyor belt in a bridge shape, and a tape affixed to the tape within the opening of the conveyor belt. The tape is substantially transparent, and the tape with the component affixed in the opening of the conveying means is substantially transparent so that the component is illuminated via the tape. In addition, it is possible to detect the appearance information of a part with a camera, and thereby, it is possible to perform an appearance inspection of the part at a time without removing the part from the tape, and the workability is improved.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
According to the first aspect of the present invention, there is provided a conveying belt having openings at predetermined intervals, an adhesive tape attached in a bridge shape to the opening of the conveying belt, and an adhesive tape affixed within the opening of the conveying belt. and a is parts, the adhesive tape is a obtained by a visual inspection apparatus substantially transparent, by a substantial transparent adhesive tape was applied to parts in the opening of the transport means, adhesive It is possible to illuminate the part via the tape and detect the appearance information of the part with a camera, so that the appearance inspection of the part can be performed at one time without removing the part from the adhesive tape. The effect is to be good.
[0007]
The invention according to claim 2 of the present invention is the appearance inspection apparatus according to claim 1, wherein the adhesive tape is provided with an adhesive material only on the surface on the side of the conveyor belt, and the adhesive tape itself is attached to the conveyor belt. For this reason, and by providing the adhesive material for attaching the components only on the conveying belt side, it is possible to prevent the inspection accuracy from being lowered.
[0008]
That is, there is a risk that dust or the like may adhere to the adhesive material part of the adhesive tape during parts conveyance by the conveyor belt and reduce its transparency. However, if the adhesive material is provided only on the conveyor belt side, the adhesive material will not be Only the outer peripheral part of the parts of the opening portion of the conveyor belt is exposed, so that dust is difficult to adhere and the transparency thereof is less likely to be lowered, so that the inspection accuracy is not lowered.
[0009]
According to a third aspect of the present invention, the part has electrodes at both ends, and the electrodes at both ends are attached to an adhesive tape having a smaller width than between the electrodes. It is an appearance inspection device, and the width of the adhesive tape is made smaller than between the electrodes of the part and the parts are attached to it, so that the electrode surface of the part is not contaminated with the adhesive material of the tape and is transparent. Even if it is an adhesive tape, the shadow which may be produced by the end surface is not projected on an electrode surface, and there exists an effect | action that the precision fall of an electrode surface test | inspection does not arise as a result.
[0010]
According to a fourth aspect of the present invention, the outer peripheral illumination means for the component is provided on the adhesive tape side of the opening of the conveyor belt, and the outer peripheral inspection camera is provided on the component side, respectively. be one obtained by the visual inspection device, since illuminates the periphery of the part by the outer peripheral illumination means through the adhesive tape, to inspect the appearance inspection of the outer peripheral parts while attaching a component to the adhesive tape at the outer inspection camera Further, at this time, the outer peripheral information of the part is directly inputted to the outer peripheral camera without using the adhesive tape, so that the inspection accuracy can be further increased.
[0011]
According to a fifth aspect of the present invention, a bottom inspection camera is provided at a position facing the bottom surface of the part on the adhesive tape side of the opening of the conveyor belt, and a bottom illumination means is provided in the outer peripheral direction of the camera. 4. When the bottom surface of the component is inspected by the bottom surface inspection camera, the bottom surface illumination is performed by illuminating the bottom surface of the component from the outer peripheral direction of the camera. Since the reflection information reflected by the adhesive tape by the light from the means does not enter the bottom inspection camera, this bottom inspection camera correctly inputs the bottom information of the part, and the inspection accuracy can be increased. Has an effect.
[0012]
Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.
[0013]
As shown in FIG. 1, the appearance inspection apparatus according to the present embodiment includes an iron plate conveyor belt 2 provided with openings 1 at predetermined intervals, and a resin-made affixed to the opening 1 of the conveyor belt 2 in a bridge shape. An adhesive tape 3 and an electronic component 4 attached to the adhesive tape 3 in the opening 1 of the conveyor belt 2 are provided, and the tape 3 is substantially transparent.
[0014]
In FIG. 1, reference numeral 5 denotes a feeding hole of the conveying belt 2. By fitting a pin pulley pin (not shown) into the feeding hole 5, the conveying belt 2 that holds the electronic component 4 via the tape 3 is attached. It is surely transported in one direction intermittently and at regular intervals.
[0015]
Then, by this conveyance, an inspection of the appearance of the upper surface 4a of the electronic component 4 is first performed at the position of FIG.
[0016]
At this time, the ring-shaped illumination means 6 irradiates light on the upper surface 4a of the electronic component 4, and information from the upper surface of the electronic component 4 is detected by the upper camera 7 for inspection.
[0017]
Next, the electronic component 4 subjected to the inspection of the upper surface 4a is transported to the position shown in FIGS. 3 and 4, where the outer appearance of the electronic component 4 and the appearance of both side surfaces 4b are inspected.
[0018]
That is, the illumination means 8 arranged in four directions as shown in FIGS. 3 and 4 below the electronic component 4 through the transparent adhesive tape 3 or directly through the opening 1 to the both side surfaces 4b of the electronic component 4 at an angle of 45 degrees. Light is irradiated, and reflection information from both side surfaces 4b is detected via the prism 9 or directly by the camera 10, and an appearance inspection is performed.
[0019]
Next, the electronic component 4 whose both side surfaces 4b have been inspected in this way is conveyed to the position shown in FIG. 5, and the appearance of the lower surface 4c is inspected.
[0020]
At this time, light is emitted from the outside of the lower surface 4c of the electronic component 4 by the ring-shaped illumination means 11 to the lower surface 4c of the electronic component 4 directly through the opening 1 or via the adhesive tape 3, and from the lower surface 4c. Is detected by the camera 12 provided facing the lower surface 4c of the electronic component 4 and the appearance is inspected.
[0021]
Next, the electronic component 4 that has been subjected to the appearance inspection of the lower surface 4c in this way is conveyed to the position shown in FIG. 6, and the outer appearance inspection of the both end surfaces 4d is performed.
[0022]
At this time, light is irradiated from the ring-shaped illuminating means 13 to the both end faces 4d, and the camera 16 is detected directly or via the prism 15 and the appearance is examined.
[0023]
As shown in FIG. 1, the adhesive tape 3 is provided with an adhesive material only on the upper surface side, that is, on the surface on the side of the conveyor belt 2, so that the adhesive tape 3 itself can be adhered to the conveyor belt 2. In addition to this, it is possible to prevent a decrease in inspection accuracy.
[0024]
That is, dust or the like may adhere to the adhesive material portion of the adhesive tape 3 when parts are conveyed by the conveyor belt 2 and the transparency thereof may be reduced. However, if the adhesive material is provided only on the conveyor belt 2 side. The adhesive material is exposed only in the outer peripheral portion of the electronic component 4 in the opening 1 of the conveyor belt 2, so that dust or the like is less likely to adhere and its transparency is less likely to be reduced. The light from 8 easily passes through the adhesive tape 3, and as a result, the inspection accuracy does not decrease.
[0025]
The electronic component 4 has an electrode 4A to the as both ends 1, the electrodes 4A of the both ends, which was attached to Do adhesive tape 3 small in width than between the electrodes 4A, the adhesive tape 3 without contaminating the electrodes 4A surfaces of the electronic component 4 by bonding the electronic component 4 it is made smaller than width between the electronic component 4 of the electrode 4A with adhesive material of the adhesive tape 3, moreover the adhesive tape 3 of transparent However, a shadow that may be generated by the end face is not projected onto the surface of the electrode 4A, and as a result, the accuracy of inspection of the surface of the electrode 4A is not reduced.
[0026]
The outer periphery lighting means 8 of the electronic component 4 to the adhesive tape 3 side of the opening 1 in the case the conveyor belt 2 in FIG. 3, is provided with the camera 10 respectively to the electronic component 4 side, the adhesive tape 3 if in this way Since the outer periphery of the electronic component 4 is illuminated by the illuminating means 8, the outer peripheral portion of the electronic component 4 can be inspected with the camera 10 while the electronic component 4 is stuck to the adhesive tape 3, and at this time, the camera Since the outer peripheral information of the electronic component 4 is directly input to 10 without using the adhesive tape 3, the inspection accuracy can be further increased.
[0027]
Further, in the case of FIG. 5, a camera 12 is provided at a position facing the lower surface 4 c of the electronic component 4 on the adhesive tape 3 side of the opening 1 of the conveyance belt 2, and an illumination unit 11 is provided in the outer peripheral direction of the camera 12. by the camera 12 when in this manner when inspecting the underside 4c of the electronic component 4, will be to illuminate to the lower surface 4c of the electronic component 4 from the outer circumference direction of the camera 12, the adhesive tape with light from the illumination means 11 As a result, the information on the lower surface 4c of the electronic component 4 is correctly input to the camera 12 and the inspection accuracy can be increased.
[0028]
【The invention's effect】
The present invention as described above, a conveyor belt provided with openings at predetermined intervals, an adhesive tape was applied to the bridge-shaped to the opening of the conveyor belt, which is affixed to the adhesive tape in the opening of the conveyor belt The tape is substantially transparent, and the component is illuminated through the adhesive tape by making the tape with the component affixed substantially transparent in the opening of the conveying means, It is possible to detect the appearance information of a part with a camera, and this has the effect that the appearance inspection of a part can be performed at one time without removing the part from the adhesive tape.
[Brief description of the drawings]
1 is a perspective view of a main part of an appearance inspection apparatus according to an embodiment of the present invention. FIG. 2 is a front view of the main part. FIG. 3 is a front view of the main part. ] Front view of relevant parts [Fig. 6] Side view of relevant parts [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Opening part 2 Conveyance belt 3 Adhesive tape 4 Electronic component 4A Electrode 4a Upper surface 4b Side surface 4c Lower surface 4d End surface 5 Feeding hole 6 Illuminating means 7 Camera 8 Illuminating means 9 Prism 10 Camera 11 Illuminating means 12 Camera 13 Illuminating means

Claims (5)

Comprising a conveyor belt provided with openings, and the adhesive tape was applied to the bridge-shaped to the opening of the conveyor belt, and a component which is attached to the adhesive tape in the opening of the conveyor belt at predetermined intervals, the adhesive tape Is a substantially transparent appearance inspection device. The appearance inspection apparatus according to claim 1, wherein the adhesive tape is provided with an adhesive material only on the surface on the conveying belt side. The appearance inspection apparatus according to claim 1 or 2, wherein the part has electrodes at both ends, and the electrodes at both ends are attached to an adhesive tape having a width smaller than that between the electrodes. The appearance inspection apparatus according to any one of claims 1 to 3, wherein a peripheral illumination means for the component is provided on the adhesive tape side of the opening of the conveyor belt, and a peripheral inspection camera is provided on the component side. The external appearance according to any one of claims 1 to 4, wherein a bottom surface inspection camera is provided at a position facing the bottom surface of the component on the adhesive tape side of the opening of the conveyor belt, and a bottom surface illumination means is provided in the outer peripheral direction of the camera. Inspection device.

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