JPH0721163U - Color sorter for small pieces like tea - Google Patents

Abstract

(57) [Abstract] [Purpose] A device that can accurately and surely select the quality of a small piece such as tea, which is flat, thin, and light. [Structure] A feeding means 1 which is an electromagnetic feeder having a wide feeding surface 2 and a flat portion 4 corresponding to the width of the feeding means 1.
A drop means 3 which is a flat chute and a drop range under the drop means 3 is equally divided into a required number, and an inspection unit 5 having an inspection range identical to the fall range is provided for each divided drop range. For each of the photoelectric inspection means 6 and each of the falling ranges, an air nozzle 7 having the same ejection width as the falling range is provided, and each of the air nozzles 7 is based on an electric signal from the photoelectric inspection means 6. Air nozzle 7
And a separating means 10 each provided with a solenoid valve 9 for controlling the.

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention is intended for selection of flat, thin and light 5 mm to 2 cm square small pieces such as tencha, seaweed, and seaweed, which are raw materials for matcha. The present invention relates to a color selecting device for selecting whether the quality is good or bad.

 (Prior Art) Conventionally, an apparatus for sorting by using gravity of this type of sorting target has a V-shaped cross section for the sorting target which is made to continuously flow down from a feeding means by an electromagnetic feeder. Or, it is guided to a U-shaped chute and dropped onto a certain track while being aligned in a line by the drop means by this chute, and the inspection / separation means installed on the drop track during the free fall of the sorting object. The quality is checked and separated according to the standards.

 (Problems to be solved by the invention) However, in the conventional device of this kind, when selecting a flat, thin, and light small piece such as a green tea, the small piece is different from a spherical object, a granular object, or a V-shaped chute. In some cases, it may not be possible to slide down along the U-shaped groove as it is, and in such a case, the strip may deviate from the prescribed drop trajectory, making it impossible to perform inspection by the inspection means. Also, the attitude of each small piece sliding down on the chute is not constant, and as a result, the friction force received by each small piece and the air resistance force are different, and the falling speed varies. Therefore, there is a problem that the operation time of the solenoid valve in the separating means is deviated, so that it is difficult to perform accurate and reliable selection. The present proposal was made in view of such problems of the conventional technology. The purpose of the present proposal is to select flat, thin, and light strips of 5 mm to 2 cm square, and An object of the present invention is to provide a color selection device capable of accurately and reliably selecting the quality.

 (Means for Solving the Problems) In order to achieve the above object, the present invention is directed to a feeding means such as an electromagnetic feeder having a wide feed surface, and a flat surface having a flat portion corresponding to the width of the feeding means. The drop means, which is a chute, and the drop range under the drop means are equally divided into a required number, and each of the divided fall ranges is provided with an inspection section having the same inspection range as the divided fall range. For the photoelectric inspection means and each of the divided fall areas, an air nozzle having the same ejection width as that of the divided fall area is provided, and an electric signal from the photoelectric inspection means is provided to each air nozzle. The separating means is provided with each solenoid valve for controlling the air nozzle based on the above.

 (Operation) The small pieces supplied to the electromagnetic feeder are widely dispersed on the wide feed surface of the electromagnetic feeder, and in the dispersed state they flow down to the flat chute, so that they are fed to the flat part of the flat chute without overlapping each other. .

The small piece fed into the flat chute in this way contacts the flat part of the small piece so as to face the flat part of the flat chute and accelerates from the upper part to the lower part of the flat part in the contact state. It slides down while being played.

In this way, each strip does not roll down, but slides down while maintaining a constant posture, so the direction of drop from the flat chute is constant and the friction and air resistance that each strip receives There is no difference in force, and it falls at a constant speed.

In this way, each small piece falling from the flat chute to the range corresponding to the width of the flat chute is inspected for its quality by the photoelectric inspection means provided in each divided fall range, and photoelectrically detected. An air nozzle provided in each falling range divided in the same manner as the inspection means operates by the solenoid valve provided in the air nozzle opening and closing based on the electric signal from the photoelectric inspection means, so that a defective fine piece is not generated. It is blown off and separated from non-defective products, and the sorting is completed.

 (Embodiment) 1 is a feeding means which is an electromagnetic feeder having a wide feed surface 2 and 3 is a dropping means which is a flat chute for forming a flat portion 4 corresponding to the width of the feeding means. It has a sleek finish and is installed at an appropriate angle so as to give an appropriate falling speed to the objects to be sorted.

The falling range of the objects to be sorted below the flat chute 3 corresponds to the width of the flat chute 3, and this falling range is equally divided into the required number based on the quality, size, or required sorting accuracy of the sorting objects. To be done.

For each falling range divided in this way, photoelectric inspection means 6 provided with an inspection unit 5 having the same inspection range as the divided falling range is arranged.

Further, an air nozzle 7 having the same ejection width as that of the divided fall range is provided for each of the divided fall ranges, and each air nozzle 7 is provided with an electric signal from the photoelectric inspection means 6 based on the electric signal. Separation means 10 provided with respective solenoid valves 9 for controlling the air nozzles 7 are arranged.

The ejection port 8 of each air nozzle 7 is directed to a point slightly below the inspection point of the photoelectric inspection means 6.

11 is a high-pressure air tank that sends high-pressure air to the air nozzle 7 via the solenoid valve 9, 12 is a defective small piece blown off by the air nozzle 7, and 13 is a non-defective product received by the non-defective product receiving from the flat chute 3 as it is. Is a fluorescent lamp for illuminating an object to be sorted, and 16 is a color plate for colorimetry.

 (Effects of the Invention) Since the present invention is configured as described above, even when flat, thin, and light small pieces such as gray tea are to be selected, the same direction from the dropping means at a constant speed is achieved. Since it can be dropped, the inspection by the photoelectric inspection means and the separation by the separation means can be performed accurately and surely, and as a result, good selection can always be obtained.

[Brief description of drawings]

FIG. 1 is a perspective view of the entire apparatus, and FIG. 2 is a side view showing a partial cross section of a main part. DESCRIPTION OF SYMBOLS 1 ... Feeding means which is an electromagnetic feeder 2 ... Feeding surface 3 ... Falling means which is a flat chute 4 ... Plane part 5 ... Inspection section provided in each divided fall range 6 ... Photoelectric inspection means 7 ... Each divided fall range Air nozzles 9 ... Solenoid valves 10 ... Separation means

Claims (1)

[Scope of utility model registration request] A feeding means (1) which is an electromagnetic feeder having a wide feed surface (2), a dropping means (3) which is a flat chute having a flat surface portion (4) corresponding to the width of the feeding means (1), An inspecting unit (5) that equally divides the falling range under the falling means (3) into a required number and has the same inspection range as the divided falling range for each of the divided falling ranges.
The photoelectric inspection means (6) and the air nozzles (7) each having the same ejection width as the divided fall range are provided for each of the divided fall ranges. And a color selecting device for small pieces such as green tea, which comprises a separating means (10) each provided with a solenoid valve (9) for controlling an air nozzle (7) based on an electric signal from the photoelectric inspection means (6). .