CN203376275U - Defect detection device for bottle cap edge - Google Patents

Abstract

The utility model discloses a defect detection device for a bottle cap edge. The defect detection device comprises a bottle cap, a camera and illuminating light sources. The bottle cap is placed on a placement plane, the number of the illuminating light sources is three, the illuminating light sources are a red point light source, a green point light source and a blue point light source, the three point light sources surround the bottle cap and are arranged at intervals by every 120 degrees, and the point light sources illuminate the bottle cap from the upper portion of the outer side of the bottle cap; the camera is arranged over the bottle cap; the inclination angle of the placement plane between the point light sources and the bottle cap is 15-45 degrees; the point light sources are LEDs or metal halide lamps or laser. The red point light source, the green point light source and the blue point light source are adopted to illuminate from the upper portion of the outer side of the bottle cap, then the camera shooting from top to bottom is adopted to shoot red, green and blue shadows to be analyzed, and thus defects at the edge of the bottle cap can be conveniently detected.

Description

A kind of bottle cap edge defect pick-up unit

Technical field

The utility model relates to a kind of bottle cap edge defect pick-up unit.

Background technology

In the bottle cap detection system, conventional imaging mode has two kinds, the first is to take from top to bottom piece image, whether the image that this mode is taken can be justified by reasonable identification bottle cap usually, or the bottle cap inside feature such as defectiveness whether, but the edge defectiveness of bottle cap, at this, take in the projection of direction, defect and normal imbricate, therefore be difficult to demonstrate defect, causes almost can't detecting this defect.

The second way is to adopt the mode of side-looking to take, if there is the defect of V-type on the edge of close camera at bottle cap, due to the background of projection usually in madial wall or the submarginal bottom of bottle cap, and these zones are mainly all the materials identical with side, cause fault location and background there is no enough contrasts, had no idea to detect that V-arrangement defect.

Summary of the invention

The technical problems to be solved in the utility model is to provide a kind of bottle cap edge defect pick-up unit.

For bottle cap edge defect pick-up unit, the technical solution adopted in the utility model is: comprise bottle cap, camera and lighting source, bottle cap is placed on to be settled on plane, and lighting source is 3 and is respectively the red, green, blue pointolite; 3 pointolites are around bottle cap and by the equal angles setting of 120 °, interval, and pointolite is thrown light on to bottle cap from the top in the outside of bottle cap; Camera be arranged on bottle cap directly over.

As preferably, the inclination angle on the arrangement plane of pointolite and bottle cap is 15～45 °

As further preferred, the inclination angle on the arrangement plane of pointolite and bottle cap is 15～30 °

Preferred as another one, pointolite is LED or Metal halogen lamp or laser.

The beneficial effects of the utility model are:

Adopt three pointolites that are respectively red, green and blue to throw light on from the top, the outside of bottle cap, the shade that then adopts a camera of taking from top to bottom to take RGB is analyzed, and can detect easily the defect of bottle cap edge.

The accompanying drawing explanation

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.

Fig. 1 is the structural representation of the utility model bottle cap edge defect pick-up unit embodiment.

Fig. 2 is the defects detection schematic diagram of the utility model bottle cap edge defect pick-up unit embodiment.

In figure, 1-bottle cap, 2-red LED light source, 3-green LED light source, 4-blue led light source, the projection of 5-red LED light source, the projection of 6-green LED light source, the projection of 7-blue led light source, 8-breach, A-defect, B-defect.

Embodiment

Bottle cap edge defect pick-up unit, be comprised of bottle cap 1, camera, lighting source and control processing enter.

In Fig. 1, bottle cap 1 is to be placed on the plane of travelling belt, and lighting source has 3, is respectively red LED light source 2, green LED light source 3, blue led light source 4.

The LED light source of 3 different colours arranges around bottle cap 1, and specifically 3 LED light sources are pressed the equal angular central angle setting in 120 °, interval with the bottle cap center, and 3 LED light sources are thrown light on to bottle cap from the top in the outside of bottle cap.The inclination angle on the arrangement plane of LED light source and bottle cap is 30 °

Camera be arranged on bottle cap 1 directly over.Camera lens is taken bottle cap down.3 lighting sources are arranged on the coverage part of camera.

The present embodiment also is provided with the control processing enter, by it, realizes the control of whole system, the processing of photographic images and the output of result.

Principle of work:

The ruddiness that the LED light source of 3 different colours sends, green glow and blue light, because bottle cap 1 blocks, produce respectively the projection of this color at the opposition side of 3 light sources.Described projection has following features:

(1) because bottle cap is circular, so the projection of pointolite on bottom surface is also circular;

(2) three projections are all being passed through on the straight line in the bottle cap center of circle from the light source solstics;

(3) three view fields can be distinguished by color, as long as adopt a camera just to take from above, can obtain design sketch as shown in Figure 1.

In Fig. 1, red LED light source projection 5 is positioned at the bottle cap outside, its over against and away from red LED light source 2; Green LED light source projection 6 is positioned at the bottle cap outside, its over against and away from green LED light source 4; Blue led light source projection 7 is positioned at the bottle cap outside, its over against and away from blue led light source 4.

In Fig. 2, if the difference defectiveness A of the edge of bottle cap 1 and defect B, the red LED light source projection 5 of this direction can present corresponding breach 8 in edge, means that there is defect in this place of bottle cap.Camera can be judged the existing defect of bottle cap after this projection is taken after processing.

For obtaining apparent drop shadow effect, the suitable inclination angle of selected element light source and projection plane, the inclination angle on the arrangement plane of point light and bottle cap is 15～30 °.

In addition, pointolite can also be used Metal halogen lamp, or uses laser as pointolite.

Above-described the utility model embodiment, do not form the restriction to the utility model protection domain.Any modification of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in claim protection domain of the present utility model.

Claims (4)

1. a bottle cap edge defect pick-up unit, comprise bottle cap, camera and lighting source, and described bottle cap is placed on to be settled on plane, and it is characterized in that: described lighting source is 3 and is respectively the red, green, blue pointolite; Described 3 pointolites are around described bottle cap and by the equal angles setting of 120 °, interval, and pointolite is thrown light on to described bottle cap from the top in the outside of described bottle cap; Described camera be arranged on described bottle cap directly over.

2. bottle cap edge defect pick-up unit according to claim 1, it is characterized in that: the inclination angle on the arrangement plane of described pointolite and bottle cap is 15～45 °.

3. bottle cap edge defect pick-up unit according to claim 1, it is characterized in that: the inclination angle on the arrangement plane of described pointolite and bottle cap is 15～30 °.

4. bottle cap edge defect pick-up unit according to claim 1, it is characterized in that: described pointolite is LED or Metal halogen lamp or laser.

Images