JPH077852U - Magnetic sorting equipment - Google Patents

Abstract

(57) [Summary] [Purpose] To reliably separate the work and media. [Structure] The work and the media put in the hopper 12 of the media magnetic sorting apparatus 1 are conveyed while being diffused by the vibration of the first feeder 16, and the second feeder 1
Drop on 7. The second feeder 17 conveys the work and the medium while diffusing the work and the medium with a vibration having a lower frequency than that of the first feeder 16. Among the media and the works which are diffused and carried by the second feeder 17, the first sorter 26 magnetically attracts and carries the works. The second sorter 27 further magnetically attracts and conveys the work that has been adsorbed and conveyed by the first sorter 26. The media drops into the media receiving boxes 35 and 43, and the work drops into the work receiving box 48.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a magnetic sorting device, and more particularly, to a magnetic sorting device suitable for separating a workpiece, which is a processed product, and a medium, which is an abrasive, after barrel polishing.

[0002]

[Prior art]

 Conventionally, as a method of polishing the surface of a processed product made of a magnetic material such as iron (hereinafter referred to as a work), the work is mixed in an abrasive (hereinafter referred to as a medium) and the surface is polished by barrel polishing. Method is used. Then, after polishing the work, the work and the medium are separated, and the medium is reused. For the separation, a media magnetic sorting device is used that uses a magnetic material as a work and a non-magnetic material as a medium and separates a work and a medium by a magnet.

As shown in FIG. 4, the media magnetic sorting device 61 is provided with a vibration carrier 62 (hereinafter referred to as a feeder) and a magnetic sorting device 63. An input port 64 (hereinafter referred to as a hopper) for inputting mixed work and media is provided behind the upper portion of the feeder 62 (leftward in FIG. 4), and a media outlet is provided forward (rightward in FIG. 4). 65 is provided. Further, a vibration motor 66 is provided below the feeder 62, and the work and the media loaded into the hopper 64 are driven by the vibration motor 66 while being diffused on the feeder 62 and conveyed forward.

The magnetic sorting machine 63 rotatably supports a sorting drum 67 having a built-in permanent magnet and a discharging drum 68 for discharging a work. Both drums 67, 68 are connected by a conveyor belt 69 made of an endless belt. Has been done. The sorting drum 67 is connected to a drive motor 71 by a transmission mechanism 70 including a pulley and a belt, and the driving of the drive motor 71 causes the sorting drum 67 to move on the feeder 62 in a direction opposite to the conveying direction of the work and the media. It is designed to rotate in the direction of the arrow in the figure.

Since the work conveyed on the feeder 62 is a magnetic substance, it is magnetically attracted to the magnet of the sorting drum 67 and separated from the medium. While the work is being conveyed by the conveyor belt 69, the demagnetizer 72 removes the residual magnetism, and the discharge drum 68 discharges the work from the work discharge port 73. On the other hand, since the medium is a non-magnetic material, it is conveyed to the medium discharge port 65 and discharged without being sucked by the selection drum 67.

[0006]

[Problems to be solved by the device]

 However, when the amount of the work and the medium put into the hopper 64 is large, the work and the medium are conveyed while being overlapped because the work and the medium are not sufficiently diffused while being conveyed by the feeder 62. There are cases. Further, depending on the shape of the work, the work may be conveyed while being entangled with each other. At this time, a part of the work carried on the feeder 62 may be carried to the media discharge port 65 without being sucked by the media to the selection drum 67, and may be discharged together with the media. In addition, the medium conveyed on the feeder 62 may be mixed with the work sucked by the selection drum 67 and discharged together with the work from the work discharge port 73.

In any of the above cases, the work and the medium are not reliably separated. Therefore, the media and the work discharged from the respective discharge ports 65 and 73 must be manually separated, or the media and the work must be separated into the hopper 64 again to separate the media and the work. is there.

An object of the present invention is to provide a magnetic sorting device that can reliably separate a non-magnetic material and a magnetic material.

[0009]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the invention according to claim 1 is a magnetic sorting apparatus in which a vibration conveying means and a magnetic sorting means having a drum with a built-in magnet are provided in series. In addition, the gist is that the vibrating and conveying means arranged on the downstream side in the conveying direction is arranged so as to be positioned lower.

According to a second aspect of the present invention, in a magnetic sorting device in which a vibrating and conveying means and a magnetic sorting means having a drum with a built-in magnet are provided in series, the magnetic sorting means is a drum with a built-in magnet and the magnetic sorting means. A second magnetic sorting device having a belt wound around a drum having a smaller diameter and having two magnetic sorting devices arranged on the upstream side and a first magnetic sorting device arranged on the downstream side. The gist is that it is arranged below the means.

According to a third aspect of the present invention, in a magnetic sorting device provided with a vibration conveying means and a magnetic sorting means having a drum with a built-in magnet in series, a plurality of vibration conveying means are arranged in series and The vibrating and conveying means arranged on the downstream side in the conveying direction is arranged so as to be located downward, and the magnetic sorting means is composed of a drum with a built-in magnet and a belt wound between drums having a diameter smaller than that of the magnet. The gist is that the two magnetic sorting means are arranged so that the first magnetic sorting means arranged on the upstream side is below the second magnetic sorting means arranged on the downstream side.

[0012]

[Action]

 According to a first aspect of the present invention, a plurality of vibrating and conveying means are arranged in series, and the vibrating and conveying means disposed on the downstream side in the conveying direction is located below the vibrating and conveying means. Since the magnetic substance and the non-magnetic substance can be reliably separated by the magnetic sorting device, since the magnetic substance and the magnetic substance are conveyed and diffused.

Further, in the invention as set forth in claim 2, the magnetic selection means is composed of a drum having a built-in magnet and a belt wound between the drums having a smaller diameter than that, and two magnetic selection means are provided upstream. Since the first magnetic sorting means arranged on the side is arranged below the second magnetic sorting means arranged on the downstream side, the magnetic substance and the non-magnetic substance are reliably separated. can do.

[0014]

【Example】

 An embodiment embodying the present invention will be described below with reference to FIGS. As shown in FIG. 1, the magnetic media sorting apparatus 1 is provided with an iron trolley 2. Wheels 3 rolling on the floor are arranged at a predetermined interval on the lower surface of the trolley 2, and the wheels 3 can move the wheels. A supply unit 4, a transport unit 5, and a sorting unit 6 are provided on the upper surface of the carriage 2.

First, the supply unit 4 will be described. The supply unit 4 is composed of a reversing table 10, a net basket 11, a hopper 12, and an air cylinder 13. The reversing table 10 is rotatably supported on the upper end of the carriage 2 by a shaft 10a. A net basket 11 in which a work and a medium are mixed is detachably fixed to the upper surface of the inversion table 10.

A hopper 12 is arranged in front of the reversing table 10. The hopper 12 is fixed to the upper ends of the hopper bases 12a and 12b fixed to the upper surface of the carriage 2. The hopper 12 is formed in a tapered shape that widens upward so that the upper end is wider than the lower end.

An air cylinder 13 is provided below the reversing table 10. The air cylinder 13 is rotatably supported by the carriage 2. High pressure air is supplied to the air cylinder 13 from an air supply source (not shown) via the air supply valve 14, and the high pressure air causes the piston rod 13a to move in and out.

The tip of the piston rod 13 a is rotatably attached to the lower surface of the reversing table 10. Then, when high-pressure air is supplied to the air cylinder 13, the piston rod 13 a projects and the reversing table 10 is reversed together with the net basket 11. As a result, the work and media in the net basket 11 are supplied to the transport unit 5 through the hopper 12.

Next, the transport unit 5 will be described. The transport section 5 is composed of a first feeder 16 and a second feeder 17. A first feeder 16 is provided below the hopper 12 on the upper surface of the carriage 2. A second feeder 17 is arranged in front of the first feeder 16 (leftward in FIG. 1).

Receiving trays 18 and 19 are provided on the upper surfaces of the feeders 16 and 17, respectively. The second feeder 17 is arranged such that the tray 19 is below the tray 18 of the first feeder 16 and the rear end of the tray 19 is located rearward of the front end of the tray 18.

Each of the feeders 16 and 17 is a vibrating type carrier, and is supported on the upper surface of the carriage 2 via supporting springs 20 and 21, respectively, so that the vibrations of the feeders 16 and 17 do not propagate to the carriage 2. Has become. Each of the feeders 16 and 17 conveys the work and media on the trays 18 and 19 forward (to the left in FIG. 1) by vibration, and the conveyance speed can be changed by changing the frequency. That is, when the frequency of vibration is high, the works and media on the trays 18 and 19 are transported quickly. When the frequency is low, the speed at which the work and media are conveyed is slow, but vibration is applied to the work and media for a longer period of time, so that the work and media are uniformly diffused, and the overlap of work and media is reduced. In this embodiment, the frequency of the second feeder 17 is lower than that of the first feeder 16, that is, the conveying speed is set low. Therefore, the work and the medium are conveyed faster in the first feeder 16, and are more diffused in the second feeder 17 than in the first feeder 16, so that the overlap of the work and the medium is reduced.

As shown in FIGS. 1 and 2, a pair of left and right first sensors 22 and second sensors 23 are arranged on the tray 18 at predetermined intervals in the front-rear direction. Further, a pair of left and right third sensors 24 and fourth sensors 25 are arranged on the receiving tray 19 at predetermined intervals in the front-rear direction. Each of the sensors 22, 23, 24 and 25 is an optical sensor and is adapted to detect whether a work or a medium is present between the left and right sensors.

Next, the selection unit 6 will be described. The sorting unit 6 includes a first sorting machine 26 and a second sorting machine 27. The first sorter 26 is provided on the upper surface of the carriage 2. A first selection drum 28 is rotatably arranged in the first sorting machine 26. A support rod 29a that rotatably supports the first discharge drum 29 is fixed to the front surface of the first sorter 26. The first selection drum 28 has a built-in permanent magnet, and is designed to adsorb a magnetic iron work. The first sorting machine 26 is arranged such that the first sorting drum is located at the front end of the receiving tray 19 of the second feeder 17 at a predetermined interval. This space is such that the work conveyed by the second feeder 17 can be adsorbed to the first selection drum 28 and the media can fall from the first selection drum 28.

The first sorting drum 28 and the first discharging drum 29 are formed to have different diameters. In this embodiment, the diameter of the first discharging drum 29 is about half the diameter of the first sorting drum 28. Has become. As shown in FIG. 2, the drums 28 and 29 are arranged so as to extend in the left-right direction (direction orthogonal to the longitudinal direction) of the carriage 2. A conveyor belt 30, which is an endless belt made of rubber, is provided between the first sorting drum 28 and the first discharging drum 29.

Further, a motor base 32a having a first drive motor 32 provided on the upper surface thereof is fixed to the upper surface of the first sorting machine. The first drive motor 32 is connected to the first selection drum 28 via a transmission mechanism 33 including a pulley and a belt (not shown). Then, the first selection drum 28 is rotationally driven in the direction of arrow A in FIG. 1 by the first drive motor 32.

A first media receiving box 35 is placed on the trolley 2 below the first selecting drum 28, and an outlet 34 is provided between the first selecting drum 28 and the first media receiving box 35. Has been done. The outlet 34 is provided so that the media falling from the front end of the tray 19 of the second feeder 17 drops into the first media receiving box 35.

A plurality (eight in this embodiment) of magnet bars 36 extending over the left and right side walls of the outlet 34 are fixed to the outlet 34 at predetermined intervals in the front-rear direction of the carriage 2. This space is large enough for the falling media to pass through. The magnet bar 36 is provided so as to attract the work that has not been attracted to the first sorting drum 28.

The second sorter 27 is provided in front of the first sorter 26. A second sorting drum 37 is rotatably arranged in the second sorting machine 27. Further, on the front surface of the second sorter 27, a support base 38a on which the second discharge drum 38 is rotatably supported is fixed. The second sorting drum 37 has a built-in permanent magnet so as to adsorb an iron work, which is a magnetic body. The second sorting machine 27 is arranged at a position where the second sorting drum and the first discharging drum 29 of the first sorting machine 26 have a predetermined distance. This interval is such that the work conveyed by the first sorter 26 can be adsorbed to the second sort drum 37, and the media mixed and conveyed in the work can be dropped from the second sort drum 37. ing.

The second sorting drum 37 is formed to have the same diameter as the first sorting drum 28, and the second discharging drum 38 is formed to have a smaller diameter than the first discharging drum 29. In this embodiment, the diameter of the second discharging drum 38 is about half the diameter of the first discharging drum 29. Both discharge drums 29, 38 are made of a non-magnetic material (stainless in this embodiment).

As shown in FIG. 2, the drums 37 and 38 are arranged so as to extend in the left-right direction of the carriage 2. A conveyor belt 39, which is a rubber endless belt, is hung between the second selection drum 37 and the second discharge drum 38. A demagnetizer 40 is provided between the second selection drum 37 and the second discharge drum 38, and the demagnetizer 40 is arranged so that its upper surface is in contact with the inner surface 39a of the conveyor belt 39.

A motor stand 41 a having a second drive motor 41 provided on the upper surface of the second sorter 27 is fixed to the second sorter 27. The second drive motor 41 is connected to the second selection drum 37 via a transmission mechanism 42 including a pulley and a belt (not shown). Then, the second selection drum 37 is rotationally driven in the direction of arrow B in FIG. 1 by the second drive motor 41. Therefore, the work adsorbed on the second selection drum 37 is conveyed on the conveyor belt 39 toward the second discharge drum 38, and the residual magnetism is removed by the demagnetizer 40 in the middle thereof.

A second media receiving box 43 is mounted on the trolley 2 below the second sorting drum 37. The second media receiving box 43 is provided to receive the media falling from the first discharge drum 29.

A bracket 44 is provided on the upper surface of the second sorter 27 so as to project toward the front, and a plurality of air blows 45 are arranged in a row in the left-right direction of the truck 2 at the front end of the bracket 44 as shown in FIG. It is fixed. High pressure air can be supplied to the air blow 45 from an air supply source (not shown) through the pipe 46. The air blow 45 injects air toward the front end of the outer peripheral surface of the second discharge drum 38, and the work conveyed to the second discharge drum 38 by the air is dropped from the conveyor belt 39.

A second outlet 47 is fixed to the front surface of the truck 2 so as to be located below the second discharge drum 38. A pedestal 49 for mounting the work box 48 is fixed to the lower part of the front surface of the trolley 2 so as to project toward the front of the trolley 2. The second outlet 47 is provided so that the work dropped from the second discharge drum 38 can surely enter the work receiving box 48.

The work conveyed to the second discharge drum 38 by the conveyor belt 39 falls from the second discharge drum 38 by the air blown from the air blow 45. Then, the work passes through the second outlet 47 and enters the work receiving box 48.

FIG. 3 shows an electrical configuration of the magnetic sorting device. The media magnetic sorting apparatus 1 is provided with a controller 50. The controller 50 controls the air supply valve 14 to be on (open) and off (closed), and to control the supply / stop of the high-pressure air supplied to the air cylinder 13. When the controller 50 turns on the air supply valve 14, high pressure air is supplied to the air cylinder 13. When the controller 50 controls the air supply valve 14 to be off, the piston rod 13a is retracted into the air cylinder 13.

Further, each feeder 16, 17 and each sensor 22, 23, 24, 25 are connected to the controller 50. Each of the sensors 22 to 25 detects whether or not a work or a medium exists on the trays 18 and 19, and outputs the detection signal to the controller 50. Each of the sensors 22 to 25 is turned on (closed) when a work or a medium is detected, and is turned off (open) when not detected. The ON or OFF state of each of the sensors 22 to 25 is input to the controller 50 as a detection signal.

When the detection signal from each of the sensors 22 to 25 is input, the controller 50 drives and controls each of the feeders 16 and 17 based on the detection signal at a predetermined frequency. The second feeder 17 is driven at a lower frequency than the first feeder 16.

A start switch 51 is connected to the controller 50. When the start switch 51 is turned on, the controller 50 drives and controls the feeders 16 and 17 and the drive motors 32 and 41.

The controller 50 controls the air supply valve 14 on / off based on the detection result of the first sensor 22. Then, when the first sensor 22 is turned off, the controller 50 turns on the air supply valve 14, and when the first sensor 22 is turned on, the controller 50 turns off the air supply valve 14.

When both the third sensor 24 and the fourth sensor 25 are turned on, the controller 50 stops the driving of the first feeder 16 and supplies the work and the medium from the first feeder 16 to the second feeder 17. Stop. Further, the controller changes the frequency of the second feeder 17 to a lower frequency.

When the third sensor 24 is in the off state and the fourth sensor 25 is in the on state, the controller 50 drives and controls the first feeder 16 again, and supplies the work and the medium to the second feeder 17. . That is, the controller 50 adjusts the supply amount of the work and the medium supplied to the second feeder 17 by the third sensor 24 and the fourth sensor 25.

After a lapse of a predetermined time after the first sensor 22 to the fourth sensor 25 are all turned off, there is no work or media to be conveyed, and the controller 50 stops driving the feeders 16 and 17.

A first drive motor 32 and a second drive motor 41 are connected to the controller 50. The controller 50 rotationally controls the drive motors 32 and 41 at a predetermined number of rotations, and the rotation thereof drives the first sorting drum 28 and the second sorting drum 37 to rotate.

Next, the operation of the magnetic sorting device configured as described above will be described. After the barrel polishing is completed, the net basket 11 in which the work whose surface has been polished and the medium are mixed is fixed to the reversing table 10. Then, the start button 51 is pressed to drive the media magnetic sorting device 1.

When the start button 51 is pressed, the operation causes the controller 50 to turn on the air supply valve 14 to supply high-pressure air to the air cylinder 13. The air cylinder 13 causes the piston rod 13a to project by the high pressure air and reverses the reversing table 10. Then, the work and media are loaded into the hopper 12 from the net basket 11 engaged with the reversing table.

The work and media put in the hopper 12 drop onto the tray 18 of the first feeder 16. Then, the first sensor 22 detects the fallen work or medium, is turned on, and outputs the state to the controller 50 as a detection result. When the controller 50 inputs the ON state of the first sensor 22, the air supply valve 14 is turned off to stop the loading of the work and the medium into the hopper 12. When the work and the media are conveyed by the vibration and the first sensor 22 is turned off, the controller 50 turns on the air supply valve 14 to supply the work and the media to the hopper 12 again.

The work and the media dropped on the tray 18 are conveyed forward while being diffused by the vibration of the first feeder 16. Then, the work and the media are supplied from the first feeder 16 to the second feeder 17, and are further forwarded by the second feeder 17 while being further diffused. At this time, since the second feeder 17 is arranged below the first feeder 16, even if the works are entangled with each other, the works are separated by the impact when dropped. Further, since the second feeder 17 is driven at a lower frequency than the first feeder 16, the second feeder 17 is more diffused than the first feeder 16 and the overlap between the work and the media is reduced.

When both the third sensor 24 and the fourth sensor 25 are turned on by the work or the medium, the controller 50 stops driving the first feeder 16 and supplies the work and the medium to the second feeder 17. To stop. Then, the controller 50 sets the frequency of the second feeder 17 to a lower frequency and conveys the work and the media forward at a lower speed. As a result, the work and the medium are diffused on the tray 19 by the vibration, and the work and the medium do not overlap each other.

The work and medium supplied to the second feeder 17 are conveyed while being diffused to the front end of the tray 19 by vibration. Since the iron work is a magnetic substance, it is attracted to the first sorting drum 28 of the first sorting machine 26 by magnetic force. On the other hand, since the medium is a non-magnetic material, it is not adsorbed by the first selection drum 28 and falls from the front end of the tray 19 downward. Then, the media passes between the magnet bars 36 of the outlet 34, falls into the first media receiving box 35, and is collected.

The work adsorbed on the first selection drum 28 is further conveyed forward by the conveyor belt 30. The work carried by the conveyor belt 30 to the first discharge drum 29 is attracted to the second sorting drum 37 of the second sorting machine 27 by magnetic force. Then, the work is demagnetized by the demagnetizer 40 by the conveyor belt 39, and is conveyed to the second discharge drum 38.

The work carried to the second discharge drum 38 falls down from the conveyor belt 39. At this time, since the diameter of the second discharge drum 38 is formed to be small, a small work or a work stuck to the conveyor belt 39 after cleaning can be dropped. Further, the work can be reliably dropped by the air blown from the air blow 45 arranged above. The dropped work is dropped into the work receiving box 48 through the second outlet 47 and stored.

On the other hand, when the work conveyed to the front end of the second feeder 17 is not adsorbed by the first sorting drum 28 and drops into the outlet 34, the work is adsorbed by the magnet bar 36 of the outlet 34. Therefore, the work does not drop into the first media receiving box 35. That is, no work is mixed in the media stored in the first media receiving box 35.

When the medium is sandwiched between the first selection drum 28 and the adsorbed work and does not drop into the outlet 34, the work and the media are conveyed to the first discharge drum 29 by the conveyor belt 30. It At this time, the medium is conveyed while being sandwiched between the work and the conveyor belt 30, that is, with the work placed on the medium. The work conveyed to the first discharge drum 29 is adsorbed by the second selection drum 37, and the medium is not pinched between the second selection drum 37 and the work. Accordingly, the media drops from the first discharge drum 29 and drops into the second media receiving box 43. That is, since the medium is not conveyed by the second sorter 27, the medium is not mixed in the work receiving box 48.

As described above, in the magnetic sorting apparatus of this embodiment, the mixed work and media are transported while being diffused by the vibrations of the first feeder 16 and the second feeder 17, so that the second feeder 17 It is possible to prevent the media admixed with the work adsorbed on the first selection drum 28. Further, since the supply amount of the work and the medium supplied from the first feeder 16 to the second feeder 17 is adjusted by the third sensor 24 and the fourth sensor 25, the work and the medium are separated by the second feeder 17. It is possible to effectively diffuse the media, and it is possible to prevent the media from being mixed in the work adsorbed on the first selection drum 28.

Further, a magnet bar 36 is provided in the outlet 34 of the medium falling from the second feeder 17, and the work is attracted to the magnet bar 36 even when the work falls without being attracted to the first sorting drum 28. Since the work is not dropped in the first media receiving box 35, the media can be reliably separated.

Further, since the first sorter 26 and the second sorter 27 are provided in series so that the work is adsorbed to the first sort drum 28 and the second sort drum 37, the media are mixed and conveyed in the work. The work can be prevented and the work can be reliably separated from the medium.

Furthermore, since the diameter of the second discharge drum 38 is made small and the radius of curvature of the conveyor belt 39 is made small, even a small work or a cleaned work can be reliably dropped from the conveyor belt 39. .

The present invention is not limited to the above-mentioned embodiment, and may be performed as follows without departing from the spirit of the present invention. (1) Although the first feeder 16 and the second feeder 17 are provided in the above embodiment, the feeder may be provided with three or more stages.

(2) In the above embodiment, two sensors are provided for each feeder 16 and 17, but a plurality of sensors for each feeder 16 and 17 may be provided, or the positions may be arbitrarily changed. .

(3) Although the air cylinder 13 is used for the supply unit 4 in the above embodiment, a hydraulic cylinder may be used. (4) Although the feeders 16 and 17 are driven at different frequencies in the above embodiment, both feeders 16 and 17 may be driven at the same frequency.

(5) In the above embodiment, the drive control of the second feeder 17 was started from the start of operation, but the drive control may be performed after the second sensor 23 of the first feeder 16 is turned on. Further, although the driving of the respective feeders 16 and 17 is stopped at the same time, the driving of the first feeder 16 and the second feeder 17 may be stopped in this order based on the states of the respective sensors 22 to 25. .

(6) In the above embodiment, the frequency of the second feeder 17 is changed based on the state of the fourth sensor 25, but the frequency may be changed. Further, the frequency of the second feeder 17 may be sequentially changed based on the states of the third sensor 24 and the fourth sensor 25.

(7) In the above embodiment, the first feeder 16 is drive-controlled at a predetermined frequency, but the frequency may be changed based on the states of the first sensor 22 and the second sensor 23.

(8) In the magnetic sorting apparatus of the above embodiment, the magnetic sorting apparatus may be used not only for sorting work and media, but also for separating other magnetic material and non-magnetic material. (9) In the above embodiment, the demagnetizer 40 was provided only in the second sorter 27, but the demagnetizer may also be provided in the first sorter 26. The demagnetizer 40 is not always essential.

[0066]

[Effect of device]

 As described above in detail, according to the magnetic sorting apparatus of claim 1, the plurality of vibration carrying means are arranged in series, and the vibration carrying means arranged downstream in the carrying direction is positioned lower. Since the magnetic substance and the non-magnetic substance are arranged, there is an excellent effect that the magnetic substance and the non-magnetic substance can be reliably separated.

Further, according to the magnetic sorting apparatus of the second aspect, the magnetic sorting means is composed of a drum having a built-in magnet and a belt wound around a drum having a diameter smaller than that of the magnet, and two magnetic units are provided. Since the sorting means is arranged so that the first magnetic sorting means arranged on the upstream side is located below the second magnetic sorting means arranged on the downstream side, the magnetic substance and the non-magnetic substance are surely provided. It has an excellent effect that it can be separated into

Further, according to the magnetic sorting apparatus of the third aspect, the magnetic substance and the non-magnetic substance can be separated more reliably by the action of both.

[Brief description of drawings]

FIG. 1 is a side view of a magnetic sorting device of the present invention.

FIG. 2 is a plan view of the magnetic sorting apparatus of the present invention.

FIG. 3 is a diagram showing an electrical configuration of a magnetic sorting device.

FIG. 4 is a side view showing a conventional magnetic sorting device.

[Explanation of symbols]

16 ... 1st feeder as a vibration conveyance means, 17 ... 2nd feeder as a vibration conveyance means, 26 ... 1st magnetic sorting machine as a 1st magnetic sorting means, 27 ... 2nd as a 2nd magnetic sorting means Magnetic sorting machine, 28 ... First sorting drum as a magnet-containing drum, 29 ... First discharging drum as a small diameter drum, 37 ... Second sorting drum as a magnet-containing drum, 38 ... Small diameter drum 2 discharge drums, 30, 39 ... Conveyor belts as belts

Claims (3)

[Scope of utility model registration request] 1. A magnetic sorting device comprising a vibrating and conveying means and a magnetic sorting means having a drum with a built-in magnet in series, wherein a plurality of vibrating and conveying means are arranged in series and are arranged on the downstream side in the conveying direction. A magnetic sorting device characterized in that the magnetic sorting device is arranged so as to be located below the conveying means. 2. A magnetic sorting device in which vibration conveying means and magnetic sorting means having a drum with a built-in magnet are provided in series, wherein the magnetic sorting means is wound between a drum with a built-in magnet and a drum having a smaller diameter than that. And two magnetic sorting means are arranged so that the first magnetic sorting means arranged on the upstream side is below the second magnetic sorting means arranged on the downstream side. A magnetic sorting device characterized in that 3. A magnetic sorting device comprising a vibration conveying means and a magnetic sorting means having a drum with a built-in magnet in series, wherein a plurality of vibration conveying means are arranged in series, and vibrations are arranged on the downstream side in the conveying direction. The magnetic sorting means is arranged so as to be located below the transporting means, and the magnetic sorting means is composed of a drum with a built-in magnet and a belt wound around a drum having a diameter smaller than that, and two magnetic sorting means are provided on the upstream side. First placed in
The magnetic sorting device is characterized in that the magnetic sorting means is disposed below the second magnetic sorting means disposed on the downstream side.