JPH0751184Y2 - Detection fruit lighting equipment - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a detection fruit illumination device and can be used in a fruit selection device, a fruit selection plant, and the like.

[Problems to be Solved by Prior Art and Invention]

Conventionally, a detection device having a sensor for detecting the size of the fruit, in a sorting device for selecting the fruit according to size by providing in the transfer process of a conveyor for transferring the fruit on a saucer or the like,
When passing through the conveyor path on which the fruit is placed, inside the dark box-shaped detection device, the so-called louvers for illuminating the lights in this dark box, and irradiating light rays in a uniform direction excluding the scattered light of the illumination. , Optical equipment such as reflected light that changes the direction of light rays,
Since it was exposed in the dark box, dust adhered quickly and cleaning took time.

[Means for Solving the Problems]

In order to solve the above-mentioned drawbacks, this invention has a fruit detecting device 7 for detecting the size, color and the like of the fruit 1 above the sorting conveyor 8 for carrying the fruit 1 and transferring the fruit 1 to the left and right. The illuminating lamp 2 for illuminating, and the slit plates 33, 33 ... and the reflecting mirror 34 for removing the scattered light of the illuminating lamp 2 to reflect, refract, etc.
An optical case 5 including an optical device 5 made of, for example, is disposed, and the optical device 5 is provided in a transparent box body 6 made of a transparent material such as glass or resin in a light projecting space 3 below an illumination lamp 2. The transparent box body 6 is provided with the optical equipment 5 outside the lighting case 4 so as to be taken out along the front and rear of the fruit transfer direction B of the sorting conveyor 8 so as to constitute a lighting apparatus for the detected fruit.

[Operation and effect of device]

In the illuminating case 4, the irradiation light from the illuminating lamp 2 enters the transparent box body 6 from the light projecting space 3, and the scattered light is removed by the optical equipment 5 provided in the transparent box body 6 to be reflected and refracted. The fruit 1 that has passed through the face of the box 6 and goes out of the box 6 and is transferred to the surface of the sorting conveyor 8 is illuminated. During this illumination, the size and color of the fruit 1 are detected by the fruit detection device 7.

Since the optical equipment 5 is provided inside the transparent box body 6, it is dust-proof, and dust adheres to the outer surface of the transparent box body 6 so that cleaning of the optical equipment 5 itself becomes unnecessary or the frequency thereof can be reduced. .

Since the optical equipment 5 to be provided in the transparent box 6 illuminates the moving fruit 1 on the surface of the sorting conveyor 8, a certain length is required in the conveyor transfer direction, and the number of articles is plural. The transparent box body 6 is usually installed in a narrow space between the constituted selection conveyors 8, but the transparent box body 6 is moved to the outside of the lighting case 4 together with the optical equipment 5 along the front and rear direction of the fruit transportation direction of the selection conveyor 8. By providing it so that it can be taken out,
In particular, the interference with the selection conveyor and its constituent frame is eliminated and it does not become an obstacle, and the extraction is facilitated.

Cleaning the transparent box 6 becomes easy by taking out the above,
The inner surface of the illumination case 4 and the illumination lamp 2 can also be easily cleaned from the projection space 3.

The transparent box body 6 has optical equipment 5 such as a slit 33 and a reflecting mirror 34.
And does not include the illumination lamp 2 as a consumable item. Therefore, when the illumination lamp 2 is replaced, it is not necessary to disassemble the transparent box body 6 itself, and since the transparent box body 6 does not have the illumination lamp 2, no wiring is required, and the attachment / detachment is also possible. It's easy.

〔Example〕

 An embodiment of the present invention will be described with reference to the drawings.

A detection device 7 for detecting the size and surface color of the fruit 1 and a detection unit 9 incorporating the lighting device are arranged in the middle of a sorting conveyor 8 for transferring the fruits 1 (for example, potatoes and onions) in a line. I have set up.

The sorting conveyor 8 has an upper transfer stroke and a lower return stroke of the chain 15 stretched between sprockets 13 and 14 provided on the shafts 11 and 12 at the front and rear ends of a machine frame 10 which is long in the transfer direction. Chien
A box-shaped rail 16 that guides 15 is provided, and an attachment 17 that projects from the chain 15 is connected to an attachment body 20 that supports a shaft 19 so that the fruit receiver 18 can be laid sideways. A hook portion 23 of an engaging piece 22 rotatably provided separately on a shaft 21 of the mounting body 20 is engaged with an engaging pin 24 of a fruit receiving body 18 to maintain the fruit receiving posture. , The driven part 25 protruding from the engaging piece 22 is pressed from above due to the detection of the detection device 7, and the plurality of receiving bodies 18 for receiving the fruit 1 are turned over to be designated for each predetermined class. The fruit 1 is taken out to the outlet 26. A plurality of the sorting conveyors 8 are arranged in parallel. 27 is a motor. 28 is a fruit conveyor on the transfer side.

The illuminating lamp 2 is an incandescent lamp, and the lower surface of the rectangular box-shaped illuminating case 4 along the longitudinal direction of the case 4 in the transfer direction a is used as a light projecting space 3 for the plurality of sorting conveyors 8. Ten
An illuminating lamp that is supported by a pair of front and rear hollow supporting frames 29 that are erected on the upper side, is provided so as to be positioned above the conveyor 8, and is positioned at the center of the lighting case 4 in the longitudinal direction and illuminates directly below. A configuration in which the measurement unit by the detection device 7 in the central portion in the front-rear direction of the lighting case 4 is illuminated by three pieces of 2A and the respective illumination lamps 2B, 2C that are inclined toward the irradiation direction from the front-rear end portion to the central portion downward. Is. The lighting cases 4 are provided in a left-right pair with respect to the one-row sorting conveyor 8 and are provided in a pair corresponding to the left-right pair with respect to the plurality of sorting conveyors.

The transparent box body 6 that houses the optical equipment 5 is made of transparent resin, but is not limited to this. The box body 6 is provided in a rectangular box shape that can be fitted into the light projecting space 3 on the lower surface of the lighting case 4, and has a bottom surface.
30 is removable. The transparent box body 6 is provided so as to be supported by the receiving surfaces 40, 40 provided below the front surface 38 and the rear surface 39 of the lighting case 4. And the rear surface 39
Is provided as a rotatable lid at the upper part, and the rear surface 39 is screwed and fixed to the box body 6. This may be provided in another fixed shape, but by removing the screw, the rear surface
The unification of the box 39 and the box body 6 is released, and the box body 6 can be taken out from the opening portion by the upward rotation of the rear surface 39 along the longitudinal direction thereof, that is, the transfer direction a of the sorting conveyor 8. .

The optical equipment 5 in this embodiment is composed of a slit plate 33 and a reflecting mirror 34. An interval (b) is provided between each slit plate 33 which is elongated in the longitudinal direction along the transfer direction (a) of the sorting conveyor (8) so that scattered light can be excluded, or The central part in the direction is wide and the ends are narrow. Further, the reflecting mirror 34 on the bottom surface 30 and having a mountain-shaped triangular shape when viewed from the front and having a two-sided inclination can reflect a downward light beam from above in the left and right lateral directions and illuminate the fruit 1 from the left and right in the transfer direction a. The bottom surface 30 can be taken out of the box body from the opening part formed by the attachment and detachment.

Reference numerals 31 and 32 denote light shields for blocking scattered light in the lateral direction of the illuminating lamp 2, which are provided in a slit shape, and the light shield 32 at the central portion covers the peripheral surface.

The fruit detecting device 7 is in the form of a CCD camera in which the light receiving axis C is directed downward to the upper part of the sorting conveyor 8 that passes between the pair of left and right lighting cases 4, 4 in the front-rear center of each lighting case 4. However, the present invention is not limited to this. The camera is installed in a camera case 35 having a transparent plate on the lower surface, and the camera case 35 is supported by a support frame 36 which is provided over each lighting case 4. Camera detection information is cpu37
When the detected fruit 1 is transferred to the predetermined outlet 26, the driven part 25 of the engaging piece 22 of the receiving body 18 is pressed and the size of the fruit 1 is taken in. is there.

The operation of the above example will be described.

Transfer direction of the sorting conveyor 8 (a) When the potatoes of the fruits 1 are continuously supplied to the sorting conveyor 8 from the fruit conveyor 28 on the better side, one fruit 1 is placed on the receiver 18 and transferred, and the detection device is installed. When passing between the left and right boxes 6, 6 of 7, the illuminating light rays of each illuminating lamp 2 illuminate downward and pass through the upper surface of the transparent box 6 located in the light projecting space 3 of the illuminating case 4. Then, only the light rays that can pass through the slit b of the slit plate 33 are allowed to pass through and the left and right reflecting mirrors 34 formed in the lower mountain shape are reflected in the left and right directions to change the light direction. For this reason, the fruit 1 is illuminated laterally from the left and right illumination lights 2A and 2B. Therefore, the outline is clearly illuminated, and the upward reflected light from one fruit passes through the transparent bottom surface of the camera case 35 and the fruit detecting device 7
The size of the cpu 37 is determined based on the information such as the diameter, width, projected area, etc. along the transfer direction (a), and is taken out to the outlet 26 of the sorting conveyor 8 of a predetermined class.

As shown in the example, the reflectors 34 are provided by providing the lighting lamps 2 in a set of three downward lighting lamps 2A in the central portion and lighting lamps 2B and 2C that are inclined forward and backward in the transfer direction b. Even when the direction of the light beam is changed, it is possible to illuminate not only from the left and right sides of the fruit 1 but also from the front and back surfaces, so that the contour of the fruit can be clearly detected by the detection device 7 and the detection accuracy can be improved.

When the transparent box body 6 is clouded with dust and the light beam becomes weak, the lid-like rear surface 39 is unscrewed and opened, and the box body 6 is removed along the transfer direction a of the sorting conveyor 8 The outer peripheral surface can be cleaned, and the inner surface of the lighting case 4 from which the box body 6 is removed and the lighting lamp 2 can be cleaned. That is, when the bottom surface 30 is removed in a pull-out state, the reflecting mirror 34 is taken out downward from the opening, and the inner surface and the slit 33 can be cleaned. Also, by removing the box body 6, front and rear receiving surfaces 40, 4
The space between 0 is open, and the inner surface of the lighting case 4 can be cleaned.

The surface of the transparent box body 6 that does not transmit light rays, such as the bottom surface 30, may be made of an opaque body. Further, the light transmitting surfaces such as the upper surface and the left and right side surfaces may be integrally formed with the box body 6 in a lens shape.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a front sectional view, FIG. 2 is a side sectional view thereof, FIG. 3 is a side view, and FIG. FIG. 5 is an exploded perspective view of a main part. In the figure, reference numeral 1 is fruit, 2 is an illumination lamp, 3 is a floodlight space portion, 4
Is a lighting case, 5 is optical equipment, 6 is a transparent box, 7 is a detection device, 8 is a sorting conveyor, 9 is a detection unit, 33 is a slit plate, 34 is a reflecting mirror, 38 is a front surface, 39 is a rear surface, 40, 40 shows the receiving surface.

Claims (1)

[Scope of utility model registration request] 1. A fruit detection device 7 for detecting the size, color, etc. of the fruit 1 above a sorting conveyor 8 on which the fruit 1 is placed and transferred, and left and right illumination lamps 2 for illuminating the fruit 1. An optical case 5 having an optical device 5 including slit plates 33, 33, ... and a reflecting mirror 34 for removing scattered light of the illuminating lamp 2 to reflect, refract, etc., is provided. Is provided in a transparent box body 6 made of a transparent body such as glass or resin in the light projecting space 3 below the lighting lamp 2, and the transparent box body 6 is transferred to the outside of the lighting case 4 together with the optical equipment 5 from the fruit of the sorting conveyor 8. Illumination device for detected fruits that can be taken out along the front and back.