JP2002292343A - Feeder for color sorter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a feeder which makes accompanied grains to be carried around on an ascent arc side of a rotated cylinder fall to prevent interference with the adsorbed grains, and arranged/conveyed the grains adsorbed on the surface of the cylinder in a color detector. SOLUTION: In the supply apparatus of a color sorter, the feeder (5) and the color detector (13) are installed oppositely on both sides of the ascent side and descent side of the cylinder (2), a shielding plate (11) which retains the grains temporarily by a receiving channel (6) formed at the tip of the supply part (5) and scraping-up/rolling (9) and closes the lower surface in the cylinder (2) to be caught in many holes (15) easily is installed, suction force is changed, an initial end part (Z) which is the separation position of the adsorbed grains is adjusted, and the precision of discrimination is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a supply device for a color sorter in which mixed grains having different colors are adsorbed on a rotating cylinder and supplied to a color detector.

[0002]

2. Description of the Related Art Japanese Patent Laid-Open Publication No. Hei 2-31872 discloses a color sorting method in which a feeder is provided on the lower surface of a rotating cylinder to adsorb mixed heterogeneous grains to the cylinder, and the compressed air is injected from the inner surface to separate the grains. However, the suction structure at the bottom of the arc captures the weight of the grain vertically upward, requiring a strong suction force to increase suction power and ensuring airtightness. The device for reducing the generated suspended grains complicates the structure. In addition, the nozzles that continuously pierce the suction holes in several rows of grooves and eject the pressurized air also act around the different color kernels, simultaneously blow off good kernels, increase the mixing amount, and reduce the separation effect. There are problems such as.

[0003]

DISCLOSURE OF THE INVENTION The present invention provides a feed unit for preventing floating particles falling on a circular arc side face of a cylinder from sliding and preventing interference with the adsorbed grains, and a grain adsorbed on the cylinder surface. The purpose of the present invention is to provide a supply device that causes a color detector to align and convey.

[0004]

In order to achieve the above object, a supply section of a hopper is opened on an arc side surface of a perforated cylinder, and grains are temporarily stored or forcibly transferred in a receiving groove. This is a feeder for a color sorter that makes it easier to capture grains.

[0005] A supply section is provided on the side of the arc on the rising side where the cylinder rotates, and a color detector is provided on the opposite side of the descending side, so that a means for preventing the generation of rotating grains is taken.

[0006] The supply portion of the hopper is opened below the contact point where the hypotenuse of the angle of repose formed by the grain and the outer periphery of the ascending cylinder abuts. However, opening below the horizontal center line of the cylinder increases the self-weight action. It promotes the slipping of rotating grains.

A receiving groove is continuously provided at the end of the supply section joined to the outer periphery of the cylinder to temporarily store the grains, and the means for sequentially capturing the surface grains by the pores of the cylinder from a state where the grain movement is stopped is provided. Taken.

A receiving groove connected to the tip of the supply section is formed of a flexible elastic body and joined to the outer periphery of the cylinder. To prevent a gap, the bottom surface is formed of a rubber plate or a ciliary elastic body. Preferably, it is formed.

A rotatable lifting wheel is provided in a receiving groove provided between the outer circumference of the cylinder and the supply section to perform forced conveyance. A wire mesh or the like is wound around the outer circumference of the lifting wheel. A cage made in this way has better air permeability and more reliably captures grains.

The shielding plate is provided near the inner surface of the cylinder, and is rotated around the intake cylinder to select the release position of the suction force. However, the starting end of the shielding plate is adjusted according to the weight of the grain. Moving and inducing falling to the tip of the nozzle makes the separation of grains of different colors more effective.

[0011]

DETAILED DESCRIPTION OF THE INVENTION

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings, an apparatus for supplying a color sorter according to the present invention will be described. FIG. 1 is a front view in which a main part is sectioned, and a perforation (15) for adsorbing grains is provided at the center. A cylinder (2) is provided and supported by a plurality of rollers (8) arranged on the outer periphery, and low-speed rotation is input via an intermediate shaft (35). The supply of the grain is performed by setting a supply unit (5) of a hopper (3) on the side of the circular arc where the cylinder (2) rotates and ascends, and a supply device that is provided with a receiving groove (6) for temporarily storing the grain. The captured light is captured by the suction force of the perforated (15) and transferred to the color detector (13) provided at the opposite position while performing aligned arc transport while reflecting the detected grain of the different color. And a timer and an electric circuit (14) linked to the converted electric signal are used to match the blast timing of the nozzle (16) connected to the air compressor (19), This is a form of a color sorter in which the grains are blown off to a grain collecting trough (37) and separated from good grains.

FIG. 2 is a plan view in which the cylinder is sectioned. Referring to FIG. 1, the structure for adsorbing grains will be described. In FIG. 2, air is ventilated all around the intake cylinder (10) provided on the shaft core (C). Mouth (1
7) is opened and the side end is communicated with the suction fan (18) mounted on the body frame (31), and the high speed rotation is directly input from the electric motor (20) to the fan pulley (21), and the arrow (b)
The suction is performed in the direction, and the pressure in the cylinder (2) is reduced to generate the suction force. By this suction force, the surface layer of the grains temporarily staying in the receiving groove (6) is brought into contact with the porous (15) to be sequentially captured, and the cylinder (2) rising at a low speed rotation in the direction of the arrow (A) faces the opposite position. In this configuration, the adsorbed grains aligned with the color detectors (13) arranged in a plurality of rows are transported.

The arrangement of the perforations (15) is arranged so as to oppose the working range of the color detectors (13) provided in a plurality of rows, so that the blast of the nozzles (16) continuously drops the separated kernels. An array in which the pitches are enlarged so as not to act on the periphery at the same time, for example, at intervals of 10 mm or more, are arranged on the outer periphery of the cylinder (2). Further, the suction force is released at the start end (Z) of the shielding plate (11) that closes the inner surface of the arc of the perforated (15), and the adsorbed grains start to separate and fall in a line.

In order to separate the mixed grains of different colors, the supply section (5) is joined to the side of the circular arc where the rotation of the cylinder rises, and a receiving groove (6) for temporarily retaining the outflowing grains is provided in the perforated (15). The cylinders (2) are sequentially captured from the surface layer, and the outer periphery of the cylinder (2) is rotated half a turn. The different color grains are sensed by the color detector (13) mounted on the opposing descending side of the arc, and pass through while being adsorbed and shielded. The suction force is released at the same time when the plate reaches the starting end (Z) of the plate (11), and the droplets are dropped at equal intervals in the direction of the arrow (g) while drawing a parabolic falling trajectory.

The determination of the different color grains is performed by converting the amount of reflected light radiated into an electric signal by an electric circuit (14), and operating the operation circuit (24).
Output to the solenoid valve (36) through the air compressor to match the timing of the falling kernels,
The pressure wind generated in 9) is blown out from the nozzle (16), and the differently colored grains are blown off in the direction of the arrow (n) while being aligned and falling, and are discharged to the grain collecting gutter (37). One good grain has a separation structure of a color sorter in which it falls as it is and is stored from an outlet (38).

Referring to the side view of the supply unit shown in FIG. 3 and the enlarged sectional view of the supply unit in FIG. 4, the opening position of the supply unit joined to the outer periphery of the cylinder will be described. The angle (θ) is a measure of the angle at which the grain slides down, the contact position of the cylinder (2) with its hypotenuse (1) as the tangent is set to the contact (P), and the arc side surface (PX in the figure)
The supply unit (5) is opened at (interval), and the receiving groove (6) is continuously provided,
This is a configuration in which the grains temporarily stay. Also, the elastic body (7) is stretched in a curved shape on the bottom surface, and the flow is stopped in order to adsorb the deposited particles to the perforations (15) opened on the outer periphery of the cylinder (2) while escaping the sedimentary particles from the tip thereof. In this configuration, the particles are sequentially captured from the deposited particles on the surface layer and aligned and transported by ascending rotation.

Thus, the contact point (P) and the horizontal center line (X)
The grain adsorbed between the grains is an ascending arc surface on which the trapping position is steeply inclined at the angle of repose (θ) or more, and the grain that is carried around slides down, and the grain trapped in the individual perforations (15). The particles do not interfere with the floating particles during the rotational movement, and are set at a set position of the supply unit (5) where the color detector (13) can stably carry out the alignment conveyance. The two-dot chain line shown in the figure shows that the supply unit (5) is disposed below the horizontal center line (X), and the intake force is further increased to capture the kernel vertically upward, so that the floating kernel slides down. FIG.

FIG. 4 and FIG. 5 are a sectional view and a rear view of the embodiment in which a main part is opened, in which a grain is retained in the receiving groove (6). This is an embodiment in which a hoisting wheel (9) is laterally provided in the supply part (5), and the rotatable hoisting wheel (9) rotatable near the cylinder (2) is connected to a contact (P) and a horizontal center line. (X), the grains are inserted into a pot hole (45) having a large number of perforations on the outer periphery, and forcibly transported, and the grains are carried around in the V-shaped groove (22) formed on the side of the rising arc. This is a supply device that forms a sedimentary layer by escaping and traps grains in the perforations (15).

The rotating grains forcibly conveyed by the hoisting wheel (9) are circulated to the supply section (5) and become circulating grains having priority over the grains flowing down from the hopper (3), and the discharge resistance is reduced. Is generated in the supply section (5) to reduce the flow-down amount. On the other hand, the accumulation amount is adjusted by opening the shutter (23) in the direction of the arrow (d), and the suspended grains suspended in the surface layer are provided in the perforated (15) provided in the cylinder (2). To facilitate capture, a shutter adjustment structure that holds a fixed amount of deposited layer is provided. The driving of the hoisting wheel (9), which rotates at a very low speed, is driven by a roller shaft (2) to which a roller (8) is fixed.
8) A small sprocket (46) is provided at the shaft end, and a chain (48) is wound around a large sprocket (47) to provide a drive structure for inputting.

FIG. 7 is an enlarged plan view of the sliding portion of the shutter in cross-section. The amount of accumulated material staying together with FIG. 6 will be described. Is formed by an elastic body (7) using a rubber plate or cilia extending from the supply section (5), and its tip is curved in the rotation direction of the cylinder (2), so that the escaping surface grain is Porous (15)
The receiving groove (6), which is easily trapped by contact with the groove, and prevents the deposited particles from leaking and becoming loss or reduced particles.
This is the configuration. In addition, the control of the accumulated particles that escape is performed by the guide plate (25) and the long hole (26) for sliding the shutter (23) provided on the front surface of the hopper (3) in the direction of the arrow (d). The shutter (23) is adjusted by the valve opening of the shutter (23) so as to squeeze and flow away from the tip of the elastic body (7) in the rotation direction of the cylinder (2).

FIG. 8 is a perspective view of the shielding plate and the adjusting plate.
The structure for adjusting the suction force and the change in the suction force acting on the perforations of the cylinder will be described with reference to the diagram of FIG. 3. In order to increase the suction force between the line (X) and the contact point (P), and further between the end surface (Y) of the adjusting plate (12) provided at the opposed position and the starting end (Z) of the shielding plate (11). The working length of the shielding plate (11) for closing the lower surface of the arc of the perforated (15) is enlarged between the starting end (Z) and the ending (R). Further, the starting end (Z) is a position where the suction force is released, and also has a rotating structure capable of adjusting the separated position.

The adsorbed grains passing on the outer periphery of the cylinder above the one contact point (P) move on the upper surface of the gently inclined arc and the conveyance is stabilized.
Even if an adjusting plate (12) that forms is stretched over the entire width and taking measures to attenuate the suction force on the upper surface of the arc, the adsorbed grains do not separate and both sides of the arc that requires the suction force (Y- Z)
This is an embodiment in which the color detector (13) arranged in the area (1) and the suction force in the area near the supply section (5) (between X and P in the drawing) are enhanced.

The structure of the separation of the adsorbed grains and the structure of the shielding plate is based on the structure of the suction fan (10) provided with the side end of the intake cylinder (10) provided on the axis (P) of the cylinder (2) outside the body frame (31). 18)
, The grains are trapped in the perforated holes (15) by the generated suction force, and the grains are rotated and moved to the opposite color detector (13), and the falling grains are positioned immediately after the grains are distinguished from each other. In order to stabilize the size, the falling position of the adsorbed grains which starts to be separated from the starting end (Z) of the shielding plate (11) can be adjusted. The adjustment operation is performed by providing adjustment holes (40) on both sides for moving the start end (Z) in the direction of arrow (c) shown in FIG. 1 and fixing the knobs with the knob screws (41). (G) The direction of the nozzle (16) is changed and guided to the tip of the nozzle (16), and the adjusting structure is adjusted to match the ejection timing.

FIG. 9 is an enlarged side view of a cross section of the roller. Referring to FIG. 1 and FIG. 2, the drive structure of the cylinder will be described. ) Is welded and rotatably supported by a roller shaft (28) in which a plurality of rollers (8) are locked so as to press the surface. An input pulley (30) is provided at the side end of the cylinder, and the reduced rotation is input from the electric motor (20) via the intermediate shaft (35) shown in FIG. Drive structure. Further, a wheel case (32) is concentrically fitted to the body frame (31), and a seal (33) is wound around the overlapped portion fitted into the inner diameter of the cylinder (2) to maintain airtightness. It was made.

FIG. 10 is a view showing another embodiment of the intake cylinder.
Intake cylinder (10), adjustment plate (12) and shielding plate (1
1) is integrally formed in a drum shape, and a ventilation port (17) is provided in a concave portion of an air space (42) formed on both sides of the circular arc of the cylinder (2) to communicate with a suction fan (18). Separate embodiment showing an integrated intake structure in which the intake force acting on the perforated holes (15) is increased in the vicinity of the supply section (5) and the color detector (13) respectively opposed to the airspace (42). It is.

[0026]

According to the present invention, the supply section of the hopper is opened on the side of the circular arc on the rising side of the cylinder having the holes, and the grains are temporarily retained in the receiving grooves or are forcibly transferred, so that the grains are easily trapped in the holes. The following effects can be achieved by using a color sorter supply device.

Since the supply section is provided on the side of the arc on the rising side where the cylinder rotates, and the color detector is provided on the opposite side on the descending side, floating kernels are not generated, interference with the adsorbed grains is eliminated, and the adsorbing posture is achieved. Was stable.

Since the supply portion of the hopper is opened below a contact point where the hypotenuse of the angle of repose formed by the supply kernel and the outer periphery of the ascending cylinder abuts, the rotating kernel slides down and the adsorption kernel falls. Separation was clearly seen, and desorption could be avoided.

A receiving groove is continuously provided at the end of the supply unit joined to the outer periphery of the cylinder to temporarily store the grains, and the pores of the cylinder sequentially capture surface grains from the state in which the movement of the grains is stopped. As a result, it was possible to supply the color detector with stable alignment and conveyance by reliably absorbing the grains.

Since the receiving groove connected to the tip of the supply section is formed of a flexible elastic body and is joined to the outer periphery of the cylinder, the gap is closed and the number of grains that leak is reduced and returned to the hopper. Hassle-free.

A rotatable hoisting wheel is provided in a receiving groove provided between the outer periphery of the cylinder and the supply section, and a V-shaped groove is formed at the upper part of the rotation to temporarily suspend the grains. Is carried out, and fluctuations in the amount of deposition due to moisture and impurities are reduced,
Stable adsorbed grains began to be generated.

Since the shielding plate is arranged close to the inner surface of the cylinder and is rotated around the intake cylinder to select the release position of the intake force, the release position according to the grain weight can be selected. It was possible to induce falling kernels, the accuracy of discriminating grains of different colors was improved, and the number of good kernels mixed was reduced.

[Brief description of the drawings]

FIG. 1 is an overall front view in which a main part is sectioned.

FIG. 2 is a plan view in which a cylinder is sectioned.

FIG. 3 is a side view of a supply unit.

FIG. 4 is an enlarged sectional view of a hoisting wheel provided in a receiving groove.

FIG. 5 is a rear view in which a main part of the hoisting wheel is opened.

FIG. 6 is an enlarged sectional view of a supply unit.

FIG. 7 is a cross-sectional plan view of a sliding portion of a shutter.

FIG. 8 is a perspective view of a shielding plate and an adjustment plate.

FIG. 9 is an enlarged side view of a cross section of a roller.

FIG. 10 is a diagram showing another embodiment of the intake cylinder.

[Explanation of symbols]

C. . Shaft core . contact
T. . Gap X. . Horizontal center line Y. . End face (adjustment plate)
Z. . Starting end (shielding plate) θ. . Angle of repose R. . Terminal part (shielding plate) . Hypotenuse 2. . cylinder
3. . Hopper 5. . Supply unit 6. . Receiving groove
7. . Elastic body 8. . Roller 9. . Raised wheel
10. . Intake cylinder 11. . Shield plate 12. . Adjustment plate
13. . Color detector 14. . Electric circuit 15. . porous
16. . Nozzle 17. . Vent 18. . Suction fan
19. . Air compressor 20. . Electric motor 23. . shutter
25. . Guide plate 27. . Link 32. . Wheel case
33. . Seal 35. . Intermediate shaft 36. . Solenoid valve
37. . Gathering gutter 38. . Outlet 42. . Airspace
45. . Urn hole 46. . Small sprocket 47. . Sprocket large
48. . Chain arrow (a). . Cylinder upward rotation arrow (b). . Intake direction in cylinder Arrow (c). . Adjustment direction of shield plate Arrow (d). . Opening / closing direction of the shutter Arrow (f). . The direction of rotation of the lifting wheel. . Parabolic grain falling direction Arrow (n). . Flight direction of unusual grains

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Taketoshi Nakahira 428 Enami, Onami, Okayama Pref. F term (reference) 3F079 AC13 BA09 BA12 CC03 DA04 DA28 EA10

Claims (6)

[Claims] 1. A color sorter for discriminating grains of different colors, comprising a feeder for adsorbing grains by providing a perforation on the outer periphery of a rotating cylinder, wherein a feeder is provided on a side of a rising arc where the cylinder (2) rotates. A supply device for a color sorter, wherein (5) is provided, and a color detector (13) is provided on an opposite descending side. 2. The supply unit (5) is opened below a contact (P) where the hypotenuse (1) of the angle of repose (θ) formed by the supply kernel and the outer periphery of the cylinder (2) abut. The supply device for a color sorter according to claim 1, wherein 3. The grain according to claim 2, wherein a receiving groove (6) is connected to an end of the supply part (5) which is joined to an outer periphery of the cylinder (2) to temporarily store grains. Supply device for color sorter. 4. A receiving groove (6) connected to a tip of a supply part (5) is formed by a flexible elastic body (7) and is joined to an outer periphery of a cylinder (2). Item 4. A supply device for a color sorter according to Item 3. 5. An outer periphery of a cylinder (2) and a supply section (5).
A lift groove (9) rotatable in a receiving groove (6) provided therebetween.
The supply device for a color sorter according to claim 2, further comprising: 6. The color sorter feeding device according to claim 1, wherein the shielding plate (11) is provided near the inner surface of the cylinder (2).