JP2009226281A - Magnetic sorting apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To lower the cost of manufacture and to improve sorting efficiency by a simple configuration. <P>SOLUTION: On the upper part of the carrying part 8 of a supply part 1 for supplying objects to be sorted comprising a magnetic object and a non-magnetic object, a magnetic disk 2 having a plurality of magnets 3 is provided so as to be rotated about a rotary shaft by a driving motor 21. An elastically deformable disk-like separation plate 4 is connected to the magnetic disk 2 and disposed below the magnetic disk 2, and a pressurizing body for imparting pressurizing force by a pressurizing part in a direction of separating the separation plate from the magnetic disk 2 is provided. The respective magnets 3 are disposed on the outer periphery of the magnetic disk and have magnetic force capable of attracting the magnetic object on the carrying part 8 to the separation plate. The part corresponding to the pressurizing part in the separation plate is elastically deformable to a position where the part is distant away from the magnetic disk 2 by the pressurizing force of the pressurizing body so that the magnetic force of the magnets 3 is not exerted. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a magnetic sorting device for sorting magnetic and non-magnetic materials.

As a magnetic sorting device that sorts magnetic materials and non-magnetic materials from an object to be sorted, for example, a drum-type magnetic sorting device described in JP-A-2006-95431 and a foreign matter sorting device described in JP-A-2005-296651 ( In the following, “Conventional Example 1” and “Conventional Example 2” are proposed.
As shown in FIGS. 1 and 4, the conventional example 1 includes a first magnetic sorting rotary drum and a second magnetic sorting provided adjacent to the first magnetic sorting rotary drum with a gap. A rotating drum is supported on a gantry, and in the first magnetic force sorting rotating drum, the magnetized material in the processing raw material conveyed from the conveyor is placed close to the inside, and the permanent magnet group is arranged on one side. In the second magnetic sorting rotary drum, the magnetized material adsorbed on the magnetic surface side and gradually conveyed to the non-magnetic surface side on the other side of the first magnetic sorting rotary drum is brought close to the inner side to obtain a permanent magnet. It is a drum type magnetic force sorting device that attracts one side of the magnetic surface where the group is arranged and gradually conveys it to the non-magnetic surface side of the other side.
In addition, as shown in FIGS. 1 and 2, the conventional example 2 is arranged in the vicinity of a selection object that falls along a predetermined trajectory, and the rotating electrode whose outer peripheral surface is charged with a predetermined voltage, and this rotation A scraper that is in contact with the outer peripheral surface of the electrode and scrapes off from the outer peripheral surface the dielectric foreign matter mixed in the target object adsorbed on the outer peripheral surface, and separates the dielectric foreign matter from the target object. This is a foreign material sorting device to be removed.
JP 2006-95431 A Japanese Patent Laid-Open No. 2005-296751

The problems of Conventional Example 1 are as follows.
Each of the first magnetic sorting rotary drum and the second magnetic sorting rotary drum is provided with a main magnet group composed of a permanent magnet group and an auxiliary magnet group on the drum inner peripheral surface on the downstream side. Since both the magnet group and the auxiliary magnet group are arranged inside each rotating drum, the structure becomes complicated, and there are problems that it takes time and effort to manufacture and assemble. There is a second magnetic sorting rotary drum (see paragraph 0021 on page 6 of the publication), but in this apparatus, it is necessary to provide a second magnetic sorting rotary drum separately from the first magnetic sorting rotary drum. Not only does the structure become even more complicated, but there are also problems that the manufacturing and assembly are troublesome and costly.
The problems of Conventional Example 2 are as follows.
In Conventional Example 2, since the scraper is provided to scrape off the dielectric foreign matter sucked on the surface of the rotating electrode, it is easy to remove the dielectric foreign matter, and also facilitates cleaning of the surface of the rotating electrode. However, in practice, the sorting efficiency may be reduced when the dielectric foreign matter is very small or extremely light.
An object of the present invention is to reduce manufacturing costs and improve sorting efficiency with a simple configuration.

According to a first aspect of the present invention, there is provided a supply unit that supplies an object to be sorted made of a magnetic material and a non-magnetic material and has a transfer unit, and is provided to face the transfer unit, and has a plurality of magnets. A magnetic disk that can be rotated about a rotation axis by a driving means, and is disposed between the magnetic disk and the transport unit, and is elastically deformable by a pressing force, and is magnetic from the object to be sorted. There is provided a separation plate for separating an object, and a pressing body for applying a pressing force by a pressing portion in a direction in which the separation plate is separated from the magnetic disk. Each of the magnets is disposed on the outer periphery of the magnetic disk and has a magnetic force capable of attracting the magnetic material on the transport unit to the separation plate, and the magnetic disk and the separation plate can rotate integrally. The part to which the pressing portion of the separation plate corresponds is elastically deformable to a position where the magnetic force of the magnet does not reach due to the pressing force of the pressing body.
The second feature of the present invention is that it is a vibration feeder in which the transport unit of the supply unit is actuated by driving means on the premise of the first feature.
A third feature of the present invention is based on the first or second feature, wherein the separation plate is formed in a disc shape concentric with the magnetic disc, and the outer peripheral portion thereof is the outer peripheral surface of the magnetic disc. That is, an outer peripheral projecting portion projecting outward is formed.
According to a fourth feature of the present invention, on the premise of any of the first to third features, the pressing body is arranged in a direction intersecting with the direction in which the magnetic material is conveyed.
A fifth feature of the present invention is that, on the premise of any one of the first to fourth features, the pressing bodies are arranged to face each other with the transport section interposed therebetween.
A sixth feature of the present invention is that, on the premise of any of the third to fifth features, the pressing body presses the outer peripheral projecting portion of the separation plate.
A seventh feature of the present invention is based on any one of the first to sixth features described above, and includes a pressing wheel that is a pressing portion in which the pressing body presses the surface of the separation plate, and a pressing force by the pressing wheel. And an adjustment lever to be controlled.

  According to the present invention, since the magnetic disk is mainly used without using a plurality of rotating drums as in the conventional example, the configuration is simplified, the manufacturing and assembly are facilitated, and the manufacturing cost can be reduced. In addition, the separation plate on which the magnetic material is adsorbed by the pressing body is moved to a position where the magnetic force of the magnet of the magnetic disk does not reach, so the magnetic material can be reliably separated from the separation plate, and the sorting efficiency is improved. To do.

An embodiment of the present invention will be described with reference to the drawings.
1 and 2, the magnetic sorting device includes a supply unit 1 for supplying an object to be sorted (FIG. 8) composed of a non-magnetic material M <b> 1 and a magnetic material M <b> 2, a magnetic disk 2 having a plurality of magnets 3, A separation plate 4 for separating the magnetic material from the object to be sorted and a pressing body 5 for pressing the separation plate are provided.

As shown in FIGS. 1 and 2, the supply unit 1 includes an input body 6 into which an object to be selected composed of a nonmagnetic material M1 and a magnetic material M2 is input, and a pair for quantitatively supplying the input object to be selected. Supply roll 7 and a transport unit 8 for transporting the object to be sorted supplied from the supply roll.
The input body 6 comprises a hopper and is held by an attachment frame 10 fixed on the gantry 9.
The pair of supply rolls 7 are provided in the lower part in the input body 6, and rotate in opposite directions by the drive of the drive motor 11. The object to be sorted introduced into the input body 6 passes between the rotating pair of supply rolls 7 and is quantitatively dropped onto the transport unit 8 arranged below the supply roll 7.

The conveyance unit 8 will be described with reference to FIGS.
The conveyance part 8 comprises the main body of the supply part 1, and the vibration feeder is used in the example of illustration. The vibration feeder 8 is formed in a groove shape (FIG. 6), and is means for conveying the non-magnetic material M1 and the magnetic material M2 to be sorted from the left side to the right side in FIG. The vibration feeder 8 is supported such that both end portions in the length direction (left and right end portions in FIG. 3) are horizontally movable by support legs 12 made of an elastic member such as a rubber plate. The lower end portion of the support leg 12 is fixed to the upper plate 13a of the mounting base 13 provided on the gantry 9 with bolts. Further, below the vibration feeder 8, a vibration arm 14 for reciprocating the horizontal movement of the vibration arm 14 is disposed in a state of rising right. As shown in FIGS. 3 and 4, the tip of the vibration arm 14 is connected via a pin 15 (FIG. 1) supported by a bearing attached to the lower surface of the vibration feeder 8. The rear end portion of the vibration arm 14 is an eccentric portion 14a. A shaft 16 is passed through the eccentric portion 14a in a direction intersecting with the eccentric portion 14a (left and right direction in FIG. 4). The shaft 16 is eccentric with respect to the eccentric portion 14a.
The shaft 16 is rotatably supported by a bearing on the upper plate 13a. At one end of the shaft 16, a vibration generating pulley 17 having the rotation center as a center is attached. The vibration generating pulley 17 is attached to the upper plate 13 a of the mounting base 13 provided on the gantry 9.
Both ends of the belt 19 are wound around a vibration generating pulley 17 and a vibration driving motor 18 fixed to the lower surface of the upper plate 13a.
Therefore, the driving force of the vibration drive motor 18 is transmitted from the vibration generating pulley 17 to the shaft 16 via the belt 19, and the vibration arm 14 advances and retreats in the length direction through the eccentric portion 14a as the shaft rotates. Therefore, the vibration feeder 8 repeats reciprocating movement in the horizontal direction.
By such a reciprocating movement of the vibration feeder 8, the non-magnetic material M1 and the magnetic material M2 to be sorted supplied on the vibration feeder are gradually conveyed in the right direction in FIG.

The magnetic disk 2 will be described with reference to FIGS.
The magnetic disk 2 is provided in a horizontal state opposite to and above the vibration feeder 8. A bearing 20 is provided at the center of the magnetic disk 2. A rotation shaft 22 constituting a part of a speed reduction mechanism communicating with the output shaft of the drive motor 21 is inserted into the shaft hole 20 a of the bearing 20. The drive motor 21 is fixed on the gantry 9. The magnetic disk 2 can rotate around the rotary shaft 22 via the bearing 20 as the drive motor 21 is driven.
On the lower surface of the magnetic disk 2, a ring-shaped receiving body 23 is provided so as to surround the shaft hole 20 a of the bearing 20. The receiving body 23 serves as a holding means for the separation plate 4 described later, and its height is the same as the thickness of the magnet 3.
The magnet 3 is arrange | positioned at equal intervals on the outer peripheral side whole periphery of the lower surface of the magnetic disc 2, as shown in FIG.6 and FIG.7. The magnet 3 is a rectangular permanent magnet. The magnet 3 is capable of attracting the magnetic material to the lower surface of the separation plate 4 among the magnetic material M2 and the non-magnetic material M1 constituting the object to be sorted by its magnetic force.

The separation plate 4 and the pressing body 5 will be described with reference to FIGS.
3 to 5, the separation plate 4 is a disk-shaped plastic plate disposed between the magnetic disk 2 and the vibration feeder 8. The separation plate 4 is located on the lower surface side of the magnetic disk 2 and forms a concentric circle with this magnetic disk. The diameter of the separation plate 4 is set to be larger than the diameter of the magnetic disk 2, and a portion of the separation disk 4 that protrudes outward by the width W from the outer peripheral end surface of the magnetic disk is an outer peripheral overhanging portion 4 a (FIGS. 5 and 7). It is.
The separation plate 4 is applied to the end face of the receiving body 23 of the magnetic disk 2 and is integrated with the magnetic disk by a bolt 24 which is a fixing member. The separation plate 4 is kept at the same distance as the magnet 3 with respect to the magnetic disk 2.
As shown in FIGS. 8 and 9, the separation plate 4 can be elastically deformed by a pressing force applied to the outer peripheral portion thereof downward by the pressing body 5, and the elastic deformation portion 4 b elastically deformed into a U shape when used. Form.
In the example shown in FIG. 4, the pressing body 5 is disposed opposite to the left and right sides of the separation plate 4, that is, in a direction crossing the transport unit 8, and is attached to the gantry 9. Each pressing body 5 includes a pressing wheel 25 that is a pressing portion, and an adjustment lever 26 that controls the pressing force.
The pressing wheel 25 is in contact with the outer peripheral overhanging portion 4a (FIGS. 5 and 7) of the separation plate 4, and always presses the outer peripheral surface of the separation plate downward. The pressing force of the pressing wheel 25 causes the separation plate 4 to be elastically deformed downward, and the distance D () between which the magnetic force does not reach between the deepest portion of the elastic deformation portion 4b of the separation plate and the magnet 3 caused by the elastic deformation. 6).
As shown in FIG. 4, the adjustment lever 26 is attached to the front and rear sides (both left and right sides in the figure) of the gantry 9 so that the angle of the adjustment lever 26 can be adjusted with the pin 27 as the rotation center. A pressing wheel 25 is connected to the tip of the adjustment lever 26. The adjusting lever 26 can control the pressing force applied to the separation plate 4 by the pressing wheel 25 by adjusting the mounting angle.

Next, a method for sorting the object to be sorted into the non-magnetic material M1 and the magnetic material M2 using the illustrated magnetic sorting apparatus will be described.
The object to be sorted introduced into the input body 6 of the supply unit 1 is quantitatively supplied onto the vibration feeder 8 by the lower pair of supply rolls 7. The non-magnetic material M1 and the magnetic material M2 to be sorted are gradually conveyed to the right side of FIG. 3 by the reciprocating horizontal movement of the vibration feeder 8, and the non-magnetic material among the materials to be sorted is shown in FIG. The magnetic material M2 is dropped and collected through the end of the vibration feeder (right end in the figure), but is recovered by the magnetism of the magnet 3 attached to the magnetic disk 2 rotating above the vibration feeder 8. It is sucked and attached to the lower surface of the separation plate 4 that rotates together with the disk. When the magnetic substance M2 that moves together with the separation plate 4 while being attached rotates about 90 degrees from the attached position (position just above the vibration feeder 8), the outer peripheral overhanging portion 4a of the separation plate 4 is pressed by the pressing body 5. Since the outer peripheral portion of the separation plate gradually moves away from the magnet because it is pressed downward while contacting and rotating with the wheel 25, the magnetic force of the magnet 3 does not gradually reach, and as shown in FIG. As described above, when reaching the deepest portion of the elastically deforming portion 4b, the magnetic force does not reach the magnetic material M2 at all, and is dropped to the outside of the vibration feeder 8 and collected.
In this way, the non-magnetic material M1 among the objects to be sorted is discharged downward from the end of the vibration feeder 8, and the magnetic material M2 is discharged to the outside of the vibration feeder 8 by the separation plate 4.

  According to the magnetic sorting apparatus shown in FIG. 1, since the rotating drum incorporating magnets is not used as the magnetic sorting means as in the conventional example, and the magnetic disk 2 is mainly used, the configuration becomes simple, and the manufacturing and assembly are easy. The pressing body 5 is the separation plate 4 to which the magnetic material M2 is adsorbed by the pressing force, and the outer peripheral overhanging portion 4a to which the pressing portion 25 corresponds. The outer side is elastically deformed downward, and the outer peripheral overhanging portion is curved and separated to a position where the magnetic force does not reach the magnet 3 of the magnetic disk, so that the magnetic material M2 can be reliably separated from the separation plate, Sorting efficiency is improved, and sorting efficiency does not decrease even when the magnetic material is very small or extremely light.

In the example shown in FIG. 4, the pressing body 5 is disposed so as to face two left and right sides. However, the pressing body 5 may be one place or three or more places, and does not necessarily need to be placed facing each other.
In FIG. 1, the vibration feeder is used for the transport unit 8 that constitutes the main body of the supply unit 1, but the vibration feeder is not necessarily required.

It is a partial cross section front view which shows the magnetic sorting apparatus concerning this invention, Comprising: It is a figure which abbreviate | omitted the press body. It is a side view which shows the magnetic selection apparatus based on this invention. It is a partially notched enlarged front view showing the main part of the magnetic sorting apparatus according to the present invention, and is a view in which a pressing body is omitted. It is an enlarged side view which shows the principal part of the magnetic selection apparatus concerning this invention. It is a partially cutaway enlarged plan view showing a magnetic sorting device according to the present invention. It is an enlarged side view which shows the relationship of the magnetic disc in a magnetic sorting device concerning this invention, a magnet, a separation plate, a press body, and a vibration feeder. It is an enlarged bottom view which shows the relationship between the magnetic disc and separation plate in the magnetic sorting apparatus concerning this invention. It is a perspective view which expands and shows the relationship between the magnetic disc in the magnetic sorting device concerning this invention, a separation plate, and the press wheel of a press body. It is a perspective view which expands and shows the state which the outer peripheral overhang | projection part of the separation plate in the magnetic selection apparatus concerning this invention has left | separated from the magnetic disc.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Supply part 2 Magnetic disc 3 Magnet 4 Separation plate 4a Outer peripheral part 4b Elastic deformation part 5 Pressing body 8 Vibration feeder (conveyance part)
14 vibration arm 17 vibration generating pulley 18 vibration drive motor 21 drive motor (drive means)
22 Rotating shaft 25 Press wheel (pressing part)
26 Adjustment lever D Distance M1 Non-magnetic material M2 Magnetic material W Width

Claims (7)

A supply unit for supplying an object to be sorted made of a magnetic material and a non-magnetic material and having a transport unit;
A magnetic disk that is provided opposite to the conveying unit, has a plurality of magnets, and can be rotated around a rotation axis by a driving unit;
A separation plate that is disposed between the magnetic disk and the transport unit, is elastically deformable by a pressing force, and separates the magnetic material from the material to be sorted;
A pressing body for applying a pressing force by a pressing portion in a direction away from the magnetic disk of the separation plate,
Each of the magnets is disposed on the outer periphery of the magnetic disk, and has a magnetic force capable of attracting the magnetic material on the transport unit to the separation plate,
The magnetic disk and the separation plate are coupled so as to be integrally rotatable,
The portion of the separation plate corresponding to the pressing portion can be elastically deformed to a position where the magnetic force of the magnet does not reach due to the pressing force of the pressing body.   2. The magnetic sorting apparatus according to claim 1, wherein the conveying unit of the supply unit is a vibration feeder that is operated by a driving unit.   The separation plate is formed in a disc shape concentric with the magnetic disk, and an outer peripheral portion of the separation plate forms an outer peripheral projecting portion that projects outward from the outer peripheral surface of the magnetic disc. Item 3. The magnetic sorting device according to Item 2.   4. The magnetic sorting device according to claim 1, wherein the pressing body is disposed in a direction intersecting with a direction in which the magnetic material is conveyed.   The magnetic sorting device according to any one of claims 1 to 4, wherein the pressing bodies are arranged to face each other with the conveyance unit interposed therebetween.   6. The magnetic sorting apparatus according to claim 3, wherein the pressing body presses the outer peripheral protruding portion of the separation plate.   The pressing body includes a pressing wheel that is a pressing portion that presses the surface of the separation plate, and an adjustment lever that controls a pressing force by the pressing wheel. The magnetic sorting apparatus as described.

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