JPH06312826A - Part feeder - Google Patents

Abstract

PURPOSE:To provide a parts feeder, which can reduce the blemish of parts at an image pick-up position for the accurate image pick-up of the shape of a part. CONSTITUTION:A part of a carrying passage 2 at a position for the photographing of parts is made of teflon group resin 6, and formed into a flat shape or a shape having the downward slope. Since the Teflon (registered) resin 6 has the excellent mold releasing property, the adhesion of dust is reduced to eliminate the influence of the dust on a detected image of a part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a parts feeder, and in particular, parts are conveyed by vibrating them on a conveying path, and an image of the parts is picked up by a visual sensor such as a CCD camera.
The present invention relates to a parts feeder that eliminates parts having a bad shape or posture and supplies only good parts.

[0002]

2. Description of the Related Art FIG. 3 is a cross-sectional view of a main part of a transport path of a conventional parts feeder. In FIG. 3, the component 1 is transported on the transport path 2 while being vibrated. The image pickup position of the transport path 2 is composed of a semi-transmissive plate 3, a lamp 4 is arranged below the lamp 4, and a CCD camera 5 is arranged above it. Light from the lamp 4 is transmitted through the semi-transmissive plate 3 to the component 1
The image of the shadow is captured by the CCD camera 5. As another example, there is a method in which the lamp 4 is provided above the transport path 2, the light from the lamp 4 is reflected by the component 1, and the reflected light is imaged by the CCD camera 5. In this case, the semi-transmissive plate 3 may be an opaque plate.

[0003]

The above-mentioned semi-transmissive plate is made of, for example, an acrylic resin, and when the component 1 passes through, the surface of the component 1 is contacted with the component 1 to cause microscopic scratches. Dust and dirt on the surface will cause dirt. Therefore, the light from the lamp 4 is less likely to be transmitted, and in some cases, a correct detection image of the component 1 cannot be obtained.

Therefore, a main object of the present invention is to provide a parts feeder capable of reducing contamination of an image pickup position of a component and accurately capturing an image of the shape of the component.

[0005]

The invention according to claim 1 is
In a parts feeder that conveys a component on a conveyance path by vibrating and picks up an image of the part and eliminates parts with a bad shape or orientation, the part of the part that picks up the image of the part is made of Teflon resin. To do.

[0006]

In the parts feeder according to the present invention, the part for picking up the image of the part of the conveying path is made of the Teflon resin, so that the releasability is improved and the adhesion of dust is reduced, and the detected image is reduced. It is possible to reduce the risk of affecting the.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a perspective view of an essential part of an embodiment of the present invention. In this embodiment, the imaging position portion of the transport path 2 is made of Teflon resin such as tetrafluoroethylene (PTFE) or PFA. Since such a Teflon-based resin has a good mold releasability, it has an advantage that dust can be reduced. Therefore, as described with reference to FIG. 3 described above, it is possible to reduce dirt caused by adhesion of dust, reduce the possibility that light from the lamp 4 is less likely to pass through, and do not affect the image detected by the CCD camera 5.

However, since the Teflon resin has a too small friction coefficient as a conveying path of the parts feeder,
If there is a normal upward slope, the parts cannot be transported normally, so that the portion using the Teflon-based resin 6 needs to be flat or downward slope.

FIG. 2 is a sectional view of a conveying path showing another embodiment of the present invention. The embodiment shown in this FIG.
As the acrylic resin, a Teflon-based sheet 7 is attached thereon. Even if the Teflon sheet 7 is attached in this manner, the same effect as that of the embodiment shown in FIG. 1 can be obtained.

[0010]

As described above, according to the present invention, since the conveyance path of the part for picking up the image of the part is formed of the Teflon resin, the part can be released easily and the dust can be adhered. Can be reduced. As a result, it is possible to prevent the light from the light source from becoming difficult to transmit, and the detected image is not affected. When acrylic resin is used as in the past, the surface turns black after about 1 day of operation, but when Teflon-based resin is used, the surface changes almost even after 1 week of operation. Absent.

[Brief description of drawings]

FIG. 1 is a perspective view of an essential part of an embodiment of the present invention.

FIG. 2 is a sectional view of a conveyance path according to another embodiment of the present invention.

FIG. 3 is a perspective view of a main part of a conventional parts feeder.

[Explanation of symbols]

 2 Transport path 6 Teflon resin 7 Teflon sheet

Claims (1)

[Claims] 1. A component is vibrated to be conveyed on a conveyance path,
In a parts feeder for picking up an image of the part and excluding parts having a bad shape or orientation, a part feeder for picking up an image of the part is made of Teflon resin.