JP2013244569A - Magnetic selective collection device and chip selective collection method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a magnetic selective collection device capable of selectively collecting magnetic metal and non-magnetic metal even if chips produced by cutting or the like contain moisture.SOLUTION: A magnetic selective collection device 1 is configured to selectively collect magnetic metal and non-magnetic metal from chips produced by cutting or the like, and is equipped with: a tank 10 for storing an appropriate amount of liquid 50 and receiving chips; a rotating body 20 containing a magnet 25 and which is rotatably supported in the tank 10 so that a region to be adsorbed by the magnet 25 is moved into a range from an in-liquid area to an out-liquid area when the liquid 50 is stored in the tank 10; a magnetic metal collection means 40 for collecting magnetic metal adsorbed to the rotating body 20 in the out-liquid area, and a non-magnetic metal collection means 30 for collecting non-magnetic metal in the in-liquid area.

Description

  The present invention relates to a magnetic sorting and collecting apparatus for sorting magnetic metal and non-magnetic metal from chips generated by cutting or the like, and collecting each of them, and a method for sorting and collecting chips.

  Conventionally, a magnetic drum that is formed in a sector shape with a central angle not smaller than 180 degrees by cutting out a part of a cylindrical shape, and surrounds the entire magnetic drum, with the cylindrical central portion fixedly supported, 2. Description of the Related Art A magnetic sorting and collecting apparatus including a cylindrical sleeve made of a nonmagnetic material that is rotatably provided coaxially with a fixed shaft of a magnetic drum is well known (for example, Patent Documents 1 and 2).

  In these magnetic sorting and collecting devices, when chips containing both magnetic metal and non-magnetic metal are introduced from above the cylindrical sleeve, the non-magnetic metal falls freely so as to slide on the surface of the cylindrical sleeve, and the non-magnetic metal It is discharged from the collection port. On the other hand, the magnetic metal is attracted by the magnetism of the magnetic drum while interposing the cylindrical sleeve, and is moved along with the rotation of the cylindrical sleeve. At the notch portion of the magnetic drum, the magnetic metal falls at a position where the magnetic attraction is interrupted, and the magnetic metal It was discharged from the collection port.

Japanese Utility Model Publication No. 58-51945 JP 2002-331435 A

In the prior art disclosed in the above document, the magnetic drum is fan-shaped, so that the range in which the cylindrical sleeve rotates is divided into a region where the magnetism of the magnetic drum acts and a region where the magnetism does not act. The magnetic metal and the non-magnetic metal are separated in the region where the magnetism acts, and then the magnetic metal is separated from the cylindrical sleeve in the region where the magnetism does not act. there were.
However, in the conventional magnetic sorting and collecting apparatus, when the chips contain moisture by cutting fluid or the like, when the chips are attached, particularly when the magnetic metal and the non-magnetic metal are attached. As a result, either one moves with the other, and the sorting performance of both of them is significantly reduced. For this reason, it has been necessary to dry the chips in advance and remove the moisture due to the cutting fluid or the like before putting it into the magnetic sorting and collecting apparatus.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a magnetic sorting and collecting apparatus capable of sorting and collecting magnetic metal and non-magnetic metal even when the chips are wet. Yes. It is another object of the present invention to provide a method for sorting and collecting chips, which is capable of sorting and collecting magnetic metal and non-magnetic metal even when the chips are wet.

  The inventor has found that wet chips adhere strongly to each other, and in order to separate them, instead of drying, conversely water or other aqueous solutions (hereinafter simply including “liquid” or function) It may be referred to as “separation liquid”). As a result of repeated experiments, the present invention has been completed.

  That is, the present invention is a magnetic sorting and collecting device for sorting magnetic metal and non-magnetic metal from chips generated by cutting, and collecting each of them. A tank that permits the introduction of powder, and a magnet provided therein, so that the portion that can be adsorbed by the magnet is moved from the submerged area to the outer liquid area when liquid is stored in the tank. A rotating body rotatably supported in the tank; a magnetic metal recovery means for recovering the magnetic metal adsorbed by the rotating body in the outside region; and a nonmagnetic metal existing in the submerged region. And a non-magnetic metal recovery means.

  According to the said structure, when the liquid by water or another aqueous solution is stored in a tank and chip | tip is thrown in, the chip | tips mutually attached will be isolate | separated by the liquid. Moreover, when a rotary body rotates, a liquid is stirred and isolation | separation of chips is further accelerated | stimulated. Of the separated chips, the magnetic metal is adsorbed by a rotating body provided with a magnet inside, moved from the in-liquid region to the out-of-liquid region, and recovered by the magnetic metal recovery means. And the nonmagnetic metal which exists in a liquid area | region is collect | recovered by the nonmagnetic metal collection | recovery means. As a result, even when the chips are wet, magnetic metal and non-magnetic metal can be selectively collected.

  Further, the nonmagnetic metal recovery means in the magnetic sorting and recovering apparatus of the present invention is such that the rotating body moves from the submerged region to the submerged region near the boundary between the submerged region and the outer region. A non-magnetic metal recovery port formed by opening a side surface of the tank located on the side, and a range from the lower axis of the rotary body to the non-magnetic metal recovery port when the rotating body rotates. The bottom surface of the tank formed in an arcuate cross section concentric with a circular locus by an outer edge, and the nonmagnetic metal deposited on the bottom surface of the tank is scraped off by being integrated with the rotating body and rotating with the rotating body. And a nonmagnetic metal scraping portion that is moved to the nonmagnetic metal recovery port. According to this configuration, both the magnetic metal and the nonmagnetic metal can be recovered by rotating the rotating body, which is efficient.

  In the magnetic sorting and collecting apparatus of the present invention, the nonmagnetic metal adhering to the magnetic metal adsorbed on the rotating body is further subjected to an impact in the outside region to separate the nonmagnetic material from the magnetic metal. In addition, a non-magnetic metal dropping means for dropping into the submerged region can be provided. The dropping method may be any of spraying the same kind of liquid as the liquid stored in the tank, blowing air, applying vibration, and scratching with a fork-shaped scraper. According to this configuration, it is possible to prevent a high-value nonmagnetic metal such as aluminum from being collected together with the magnetic body.

  The present invention can also be applied as a method for sorting and collecting chips. That is, a method for sorting and collecting magnetic metal and non-magnetic metal from chips generated by cutting, and the chips are separated into water or other aqueous solution that promotes the separation of the chips adhering to each other. A step of immersing, a step of stirring the separation liquid in which chips are immersed, a step of moving an adsorbing member that generates magnetic force into the liquid of the separation liquid, and then moving the adsorption member outward. , The same kind of liquid as the separation liquid is sprayed on the magnetic metal moved to the outside of the separation liquid by the adsorption member to separate the nonmagnetic metal adhering to the magnetic metal, and the nonmagnetic metal The method includes a step of returning to the separation liquid, a step of recovering the magnetic metal adsorbed on the adsorption member, and a step of recovering the nonmagnetic metal deposited in the separation liquid.

  According to the above configuration, the chips immersed in the separation liquid are separated from each other by the separation liquid. Moreover, the separation of chips is further promoted by stirring the separation liquid. Of the separated chips, the magnetic metal is adsorbed by an adsorbing member that generates a magnetic force and is moved to the outside of the separation liquid, and a liquid of the same type as the separation liquid is sprayed thereon. Thereby, the nonmagnetic metal adhering to the magnetic metal is separated from the magnetic metal and falls onto the separation liquid. The magnetic metal that has not fallen and remains adsorbed by the adsorbing member is recovered by the magnetic metal recovery means. The nonmagnetic metal deposited in the tank is recovered by the nonmagnetic metal recovery means. Through a series of these steps, it is possible to selectively collect magnetic metal and nonmagnetic metal even if the chips are wet.

  According to the present invention, it is possible to select and collect magnetic metal and non-magnetic metal, even if it is a wet swarf, without the trouble of applying it to a dryer.

1 is a front view of a magnetic sorting and collecting apparatus 1 according to Embodiment 1. FIG. It is AA sectional drawing. 2 is a detailed view of a rotating body 20 according to Embodiment 1. FIG. It is a BB partial end view. It is CC end view of the scraper 41 which concerns on Embodiment 1. FIG. 4 is a diagram illustrating a flow of a liquid 50 according to Embodiment 1. FIG. 6 is a plan view of a magnetic sorting and collecting apparatus 2 according to Embodiment 2. FIG. It is DD sectional drawing. 6 is a detailed view of rotating bodies 120a and 120b according to Embodiment 2. FIG. 6 is a detailed view of a rotating body 220 according to Embodiment 3. FIG.

  Hereinafter, an embodiment in which a magnetic sorting and collecting apparatus according to the present invention is embodied will be described with reference to the drawings.

[Embodiment 1]
First, the first embodiment will be described. 1 and 2 are diagrams showing an outline of the present embodiment, FIG. 1 is a front view, and FIG. 2 is a cross-sectional view (A-A cross section in FIG. 1) in a left side view. As shown in these drawings, the magnetic sorting and collecting apparatus 1 according to the present embodiment includes a tank 10, a rotating body 20, a nonmagnetic metal collecting unit 30 and a magnetic metal collecting unit 40.

  The tank 10 is made of stainless steel so as not to be affected by the magnetic force, is formed in a substantially rectangular parallelepiped size that can accommodate the rotating body 20 therein, and can store the liquid 50 at the bottom. Bearings 11 and 12 are provided on both side surfaces of the tank 10 so as to rotatably support a shaft portion 22 of a rotating body 20 described later. A nonmagnetic metal recovery port 13 is opened at the lower part on the front side of the tank 10 and a magnetic metal recovery port 14 is opened at the lower part on the back side. The magnetic metal recovery port 14 is provided slightly below the shaft portion 22 of the rotating body 20, and the nonmagnetic metal recovery port 13 is provided slightly further below the magnetic metal recovery port 14. Further, in the present embodiment, a liquid discharge port 70 that is opened slightly below the nonmagnetic metal recovery port 13 is provided in the lower part on the back side of the tank 10. The liquid discharge port 70 is for maintaining a predetermined amount of the liquid 50 stored in the tank 10. The liquid 50 overflowed from the height of the liquid discharge port 70 is allowed to flow down naturally, (The one-dot chain line in FIG. 1 indicates the liquid level of the liquid 50). Thereby, a region (a submerged region) where the liquid 50 can be stored is formed between the bottom surface of the tank 10 and the height of the liquid discharge port 70. In addition, the liquid discharge port 70 is not an essential configuration, and may be configured so as not to be provided. In this case, the liquid 50 naturally flows down from the nonmagnetic metal recovery port 13, and the in-liquid region is formed from the bottom surface of the tank 10 to the height of the nonmagnetic metal recovery port 13.

Further, the bottom surface 15 of the tank 10 is formed in an arcuate cross section concentric with a circular locus by the outermost edge when the rotating body 20 rotates from below the axial center of the rotating body 20 to the nonmagnetic metal recovery port 13. As a result, a space for depositing nonmagnetic metal can be formed on the bottom surface of the tank 10, and the nonmagnetic metal can be removed by rotation of the rotating body 20 by providing an appropriate space between the periphery of the rotating body 20. It can be guided to the non-magnetic metal recovery port 13. On the other hand, from the lower part of the axis of the rotator 20 toward the magnetic metal recovery port 14, a linear cross section is formed continuously to the circular locus concentric with the circular locus by the outermost edge when the rotator 20 rotates. Has been. This is for forming a space in which nonmagnetic metal accumulates in the vicinity of the bottom of the tank 10 on the magnetic metal recovery port 14 side, and this space will be described later.
In addition, the upper part of the tank 10 is open | released and a chip can be injected | thrown-in from this open part. Further, as shown in the figure, by providing a chip charging port 90 having an inclined bottom surface in the open portion, the chip can be charged into the tank 10 while sliding down.

  The rotating body 20 is fixed to a shaft portion 22 supported by the bearings 11 and 12 of the tank 10, and can rotate within the tank 10 as the shaft portion 22 rotates. At least one rotating body 20 is provided. In this embodiment, four rotating bodies 20 are provided in parallel on the same shaft portion 22 as shown in the figure. All of these four rotating bodies 20 have the same shape, and are arranged with an appropriate interval (equal interval in the figure). The rotating direction of the rotating body 20 is a direction (counterclockwise in FIG. 1) in which the peripheral portion moves toward the non-metal recovery means 13 after the peripheral portion is closest to the lowermost portion of the bottom surface of the tank 10. The shaft portion 22 is provided so as to extend from the one bearing 11 and is connected to a motor (not shown) via a speed reducer (not shown).

  By the way, as shown in detail in FIG. 3, the rotating body 20 of the present embodiment includes a large diameter portion and a small diameter portion, both of which are alternately arranged, and the large diameter portion is formed in a mountain shape. As a result, the small diameter portion has a valley shape, and the entire side surface 21 is formed in a substantially star shape. The inside of the rotating body 20 is hollow, and the magnet 25 can be disposed. Further, the most protruding portion (convex vertex) 23 in the large diameter portion and the smallest diameter portion (concave vertex) 24 in the small diameter portion are provided on concentric circles, but the position of the concave vertex 24 is It is not arranged at the center of the adjacent convex vertex 23, but is provided in a state slightly shifted from the center in a state of approaching the rear side in the rotation direction. In the present embodiment, the ridged vertex 23 is 90 °, and the ridged vertex 24 is 234 °. Further, a gap is provided between the convex vertex 23 and the bottom surface 15 of the tank 10, so that the convex vertex of the large diameter portion does not contact the bottom surface 15 of the tank 10 when the rotating body 20 rotates. Yes. In addition, although the magnet 25 is incorporated in the rotary body 20, since this rotary body 20 is not received by the influence of magnetic force, it is comprised by the product made from stainless steel.

  In the width direction of the large diameter portion and the small diameter portion (the axial direction of the shaft portion 22), a plane (outer peripheral surface) 31 having an appropriate width dimension is formed, and the outer peripheral surface 31 has a length as shown in FIG. Two different types of rectangular plates 32 and 33 are formed alternately. By providing these rectangular plates 32 and 33, the cross-sectional shape of the rotating body 20 is formed to be substantially the same shape as the star-shaped side surface 21. However, as shown in FIG. 4, strictly speaking, the shape of the outer peripheral surface 31 and the outer peripheral shape of the side surface 21 do not completely match, and the portion of the short rectangular plate 33 is slightly larger than the outer peripheral edge of the side surface 21. It is provided on the shaft center side. A groove-like portion formed by the short rectangular plate 33 and the side surfaces 21 functions as the nonmagnetic metal scraping portion 34. That is, the nonmagnetic metal recovery means 30 includes the nonmagnetic metal recovery port 13, the bottom surface 15 of the tank 10, and the nonmagnetic metal scraping portion 34. The groove-shaped portion forms a predetermined space with the bottom surface 15 of the tank 10, and this space moves to the nonmagnetic metal recovery port 13 as the rotating body 20 rotates. The deposited nonmagnetic metal can be moved (scraped out). And according to this structure, only rotating the rotary body 20 can collect | recover both a magnetic metal and a nonmagnetic metal very efficiently.

  The rotating body 20 of this embodiment has such a shape when the nonmagnetic metal scraping portion 34 approaches the nonmagnetic metal recovery port 13 and the nonmagnetic metal is reliably discharged by its own weight. And the magnet 25 disposed inside the rotating body 20 should be as close as possible to the outer periphery of the rotating body 20 in order to ensure that the rotating metal 20 attracts the magnetic metal sinking to the bottom of the tank 10. This is because, for example, a certain space for the nonmagnetic metal to enter in front of the nonmagnetic metal scraping portion 34 is required. Therefore, as long as the same effect is brought about, the number and angle of the convex and concave vertices are not limited to the present embodiment. In addition, since the liquid 50 stored later in the tank 10 has a greater effect of separating chips from each other as much as possible, it is desirable that the liquid discharge port 70 be positioned as high as possible. As a result, the nonmagnetic metal recovery is performed. Although it is desirable to make the outlet 13 as high as possible, the height of the nonmagnetic metal recovery port 13 is determined by the balance with the nonmagnetic metal scraping portion 34 as described above.

  As shown in FIGS. 3 and 4, a magnet 25 is disposed inside the rotating body 20. The magnet 25 has a rectangular parallelepiped shape, and a pair of two magnets 25, 25 of the same type is fixed to an iron yoke 26, and the yoke 26 is fixed inside the rotating body 20. The yoke 26 is composed of two types of a plate-shaped yoke 27 and rod-shaped yokes 28 and 29. The plate-shaped yoke 27 is formed in a rectangular shape having a predetermined thickness, and the rod-shaped yokes 28 and 29 are formed in a rectangular rod shape. In addition, the plate-shaped yoke 27 is fixed along the long-side edge and the short-side edge of the rectangular portion on one side. Therefore, the magnet 25 is disposed in a state sandwiched between the inner surface of the rotating body 20 and the plate-shaped yoke 27, and the rod-shaped yokes 28 and 29 are also disposed between the rotating body 20 and the plate-shaped yoke 27. The thickness dimensions of the rod-shaped yokes 28 and 29 are the same as the thickness dimension of the magnet 25. The pair of magnets 25, 25 provided on the plate-shaped yoke 27 are arranged in alignment with the longitudinal direction of the long rod-shaped yoke 29, and the magnet 25 on the side close to the short rod-shaped yoke 28 is disposed on the rotating body 20. The magnets 25 on the side away from the short rod-shaped yoke 28 are fixed so as to be N poles so as to be S poles toward the surface. Due to the effect of the yoke 26, the magnetic force is applied only in the direction of the side surface 21, and the magnetic force is not applied to the outer peripheral surface 31. Ten yokes 26, to which one set of magnets 25 are fixed, are arranged on the side surface 21 of the rotating body 10 in the same number as the convex vertices 23. Thereby, the rotating body 20 can adsorb the magnetic metal near the outer periphery of the side surface 21 and move it upward. The internal space of the rotator 20 is liquid-tight.

  In the present embodiment, as shown in FIG. 1, four rotating bodies 20 are provided. These rotary bodies 20 have the same shape as described above, but have different internal structures. That is, the two magnets 25 are arranged inside the left and right side surfaces 21 and the two pieces at both ends are arranged only inside the side surfaces 21 in the center direction of the tank 10. In short, the magnet 25 is provided on the space side when the plurality of rotating bodies 20 are arranged with a predetermined space, and a portion that can be attracted by the magnet is formed. In addition, each rotating body 20 is provided so that the position of each convex vertex 23 (position of each magnet) is shifted by 9 ° in the axial direction of the shaft portion 22 so that the star shape does not completely match the axial direction. It has become. If they completely match, the timing at which the nonmagnetic metal scraping part 34 scrapes the nonmagnetic metal becomes simultaneous, and the liquid 50 in the tank 10 undulates, causing the entire magnetic sorting and collecting apparatus 1 to vibrate vigorously. It is.

  The magnetic metal recovery means 40 includes a scraper 41 and a magnetic metal recovery port 14. As shown in FIG. 5, the scraper 41 is made of stainless steel, and is formed of an elongated rectangular bottom surface portion 42 and side plate portions 43 provided continuously on both sides in the longitudinal direction of the bottom surface portion 42. The side plate portion 43 is provided in an oblique shape having an angle of 135 ° with respect to the bottom surface portion 42, and the scraper 41 has a groove shape that widens the upper portion as a whole. As shown in FIG. 2, the scraper 41 having such a configuration is fixed so that one end in the longitudinal direction of the bottom surface portion 42 is continuous with the magnetic metal recovery port 14 and the other end extends obliquely upward in the direction of the rotating body 20. Yes. The scraper 41 is provided so that the upper side of the side plate portion 43 on one side is in sliding contact with the side surface 21 of the rotating body 20, and each of the six side surfaces 21 on which the magnets 25 are disposed is provided. It is installed individually. Thus, when the scraper 41 is slidably contacted with the side surface 21 of the rotating body 20, the attracting part by the magnet moves with the rotation of the rotating body 20, and the magnetic metal adhering to the attracting part is scraped off and scraped. The dropped magnetic metal is moved to the magnetic metal recovery port 14 by its own weight. Therefore, the configuration of the present embodiment is not limited as long as the same effect can be obtained.

  Further, in this embodiment, in addition to the above-described configuration, a chip washing nozzle (liquid supply means) 60, a flushing nozzle (liquid supply means and stirring means) 61, a nonmagnetic metal sweep nozzle (liquid supply means and nonmagnetic metal drop) Means) 62 and covers (chip guide means) 80, 81. However, these may be configured to include a part thereof.

  Four chip pouring nozzles 60 are provided above the chip charging port 90, and each ejects the liquid 50 in a fan shape obliquely downward. That is, the chip pouring nozzle 60 plays a role of evenly pouring the chips charged into the chip charging port 90 into the tank 10 while supplying the liquid 50 into the tank 10. Details of the liquid 50 will be described later.

  Three flushing nozzles 61 are provided diagonally below the non-magnetic metal recovery port 13 between the adjacent rotating bodies 20, and each of them flushes the liquid 50 toward the magnetic metal recovery port 14 side vigorously. It has become. That is, the flushing nozzle 61 serves to separate the chips entangled with each other by stirring the chips deposited on the bottom of the tank 10 while supplying the liquid 50 into the tank 10. Further, among various spaces formed between the bottom surface of the tank 10 and the rotating body 20, the nonmagnetic metal is allowed to enter the space in front of the rotation of the nonmagnetic metal scraping portion 34 and the magnetic metal recovery port 14 side. (Back side of the device) A part of the non-magnetic metal is driven into the space near the bottom, and the non-magnetic metal accumulated in the space is rolled up in the liquid 50 by the force of water flow, together with the non-magnetic metal floating in the liquid 50 The effect of discharging from the liquid discharge port 70 is also achieved.

  Six nonmagnetic metal sweeping nozzles 62 are provided obliquely above the nonmagnetic metal recovery port 13 between the adjacent rotating bodies 20 so that each ejects the liquid 50 toward the magnetic force generation site of the side surface 21. It has become. That is, the nonmagnetic metal sweep nozzle 62 serves to separate the nonmagnetic metal attached to the magnetic metal from the magnetic metal and drop it into the tank 10 while supplying the liquid 50 into the tank 10.

  By the way, the liquid 50 stored in the tank 10 and the liquid 50 supplied from the chip pouring nozzle 60, the flushing nozzle 61, and the nonmagnetic metal sweeping nozzle 62 are all the same type. Specifically, it is the same quality as the coolant used in the cutting process, but the concentration of the solution is lower than that of the coolant used in the cutting process. The reason will be described in detail. FIG. 6 is a diagram showing the flow of the liquid 50. As shown in this figure, the liquid 50 is supplied from the coolant tank 51 outside the magnetic sorting and collecting apparatus 1 to the chip discharge nozzle 60, the flushing nozzle 61, and the nonmagnetic metal sweep nozzle 62 using the pump P. That is, the liquid 50 ejected from the chip pouring nozzle 60, the flushing nozzle 61, and the nonmagnetic metal sweeping nozzle 62 is all the coolant having the same concentration. Then, a part of the liquid 50 supplied from each part is discharged from the nonmagnetic metal recovery port 13 while adhering to the nonmagnetic metal, discharged from the magnetic metal recovery port 14 while adhering to the magnetic metal, The other liquid 50 is discharged from the tank 10 through the liquid discharge port 70. Thereafter, the discharged liquid 50 is filtered by the filter 52, 53, 54 such as a wire mesh, and returned to the coolant tank 51 again. Here, the chips put into the tank 10 adhere the coolant used at the time of cutting, and the moisture is considerably evaporated although it is moist, and the concentration of the adhered coolant becomes high. ing. As a result, the concentration of the liquid 50 discharged from the tank 10 becomes higher than when the liquid 50 is supplied into the tank, and the concentration of the liquid 50 in the coolant tank 51 gradually increases. For this reason, the liquid 50 in the coolant tank 51 is set to, for example, one third of the normal concentration, and the operation is started. Then, when the liquid 50 in the coolant tank 51 reaches a normal concentration after starting operation, the liquid 50 in the tank is recovered by two thirds, and the same amount of water as the recovered water is added. This also reduces the liquid 50 to one third of its normal concentration. Thus, although the concentration of the liquid 50 moves up and down, it is lower than that normally used. In this configuration, the recovered liquid 50 can be reused for cutting and the like, which is very suitable. However, if the reuse of the coolant adhering to the chips is not considered, the configuration is limited to this configuration. Is not to be done.

  As shown in FIGS. 1 and 2, the cover 80 is made of stainless steel, and is provided so as to cover the upper part of the rotating body 20 with respect to the center two of the four rotating bodies 20. The cover 81 is also made of stainless steel, and as shown in FIGS. 1 and 2, two of the four rotating bodies 20 are provided so as to cover the upper part inside the rotating body 20. That is, the covers 80, 81 guide the chips introduced into the tank 10 onto the liquid 50 and prevent them from being adsorbed by the rotating body 20 before dropping onto the liquid 50. Therefore, the configuration of the present embodiment is not limited as long as the same effect can be obtained by, for example, using a funnel or the like to induce chips on the liquid 50. Further, in the present embodiment, the covers 80 and 81 are connected by a connecting member 85, and by this connecting member 85, the chips introduced into the tank fall directly on the scraper 41 and are recovered as magnetic metal. Is prevented.

-Operational explanation of the magnetic sorting and collecting apparatus 1-
Subsequently, a series of operations of the magnetic sorting and collecting apparatus 1 will be described. The series of operations described here is an operation mode of the magnetic sorting and collecting apparatus 1 of the above embodiment, and also describes embodiments of the invention relating to the sorting and collecting method. First, when the wet swarf is introduced into the swarf inlet 90, it is uniformly dropped into the tank 10 by the liquid 50 ejected from the swarf nozzle 60. At that time, the covers 80 and 81 prevent the rotating body 20 from being adsorbed before dropping onto the liquid 50. Since the chip settled in the liquid 50 has no surface tension of the cutting fluid or the like adhering to the chip, the particles of magnetic metal and nonmagnetic metal are separated from each other. This is the step of immersing the chips in the separation liquid. In addition, the liquid 50 ejected from the flushing nozzle 61 separates the magnetic metal and the nonmagnetic metal entangled with each other. This corresponds to the step of stirring the separation liquid. The magnetic metal is adsorbed by the rotating body 20 and moved upward from the liquid surface (step of moving the magnetic metal). At this time, the magnetic metal adheres to the magnetic metal by the liquid 50 ejected from the nonmagnetic metal sweep nozzle 62. The nonmagnetic metal thus dropped falls into the tank 10 (step of returning the nonmagnetic metal to the separation liquid). The magnetic metal remaining attached to the rotating body 20 is scraped off by the scraper 41 and discharged from the magnetic metal recovery port 14 (step of recovering the magnetic metal). The nonmagnetic metal deposited in the tank 10 is moved upward by the nonmagnetic metal scraping portion 34 formed integrally with the rotating body 20 and discharged from the nonmagnetic metal recovery port 13 (recovering the nonmagnetic metal). Process). Moreover, a part of nonmagnetic metal is discharged | emitted from the liquid discharge port 70 with the liquid 50 (this is also the process of collect | recovering nonmagnetic metals). As described above, the magnetic metal and the non-magnetic metal can be collected from the chips by a series of operations as described above. In the present embodiment, it has been known from experiments that the nonmagnetic metal recovered from the liquid discharge port 70 is higher in purity than the nonmagnetic metal recovered from the nonmagnetic metal recovery port 13.

[Embodiment 2]
Next, a second embodiment will be described. Note that description of the same configuration as in the first embodiment is omitted. Further, in the second embodiment, the liquid discharge port 70, the chip flowing nozzle 60, the flushing nozzle 61, and the covers 80 and 81 provided in the first embodiment are not provided. FIG. 7 is a plan view showing an outline of the present embodiment, and FIG. 8 is a cross-sectional view (DD cross section in FIG. 7) in the left side view. As shown in these drawings, the magnetic sorting and collecting apparatus 2 of the present embodiment includes a tank 110, rotating bodies 120a and 121b, a nonmagnetic metal collecting means 130, and a magnetic metal collecting means 40. FIG. 7 shows a state in which the connecting member 135 is horizontal with respect to the nonmagnetic metal scraping portion 134 provided in the rotating body 120. Further, the nonmagnetic metal sweep nozzle 62 (see FIG. 2) is omitted.

  The tank 110 has almost the same configuration as the tank 10 of the first embodiment, but the liquid discharge port 70 (FIG. 2) is not provided. For this reason, the region where the liquid 50 can be stored (the submerged region) is between the bottom surface of the tank 10 and the height of the nonmagnetic metal recovery port 13. Further, the bottom surface 115 of the tank 110 is formed in an arcuate cross section concentric with the circular locus by the outermost edge when the rotating bodies 120a, 120b rotate from the lower axis of the rotating bodies 120a, 120b to the nonmagnetic metal recovery port 13. Has been. As a result, a space for depositing nonmagnetic metal can be formed on the bottom surface of the tank 110, and the nonmagnetic metal scraping portion 134 provided on the rotating bodies 120a, 120b is integrated with the rotating bodies 120a, 120b. By rotating, the nonmagnetic metal can be guided to the nonmagnetic metal recovery port 13. On the other hand, the bottom surface 115 of the tank 110 is substantially concentric with a circular locus formed by the outermost edge when the rotating bodies 120a, 120b rotate even from the lower side of the axis of the rotating bodies 120a, 120b to the magnetic metal recovery port 14 direction. It has an arcuate cross section. Further, as shown in the figure, a chip charging port 90 is provided so as to be in contact with the magnetic metal recovery port 14, and the chip can be charged into the tank 10 while sliding down.

  The rotating bodies 120a and 120b are fixed to the shaft portion 22 supported by the bearings 11 and 12 of the tank 110, and can rotate within the tank 10 as the shaft portion 22 rotates. At least one rotating body 120a, 120b is provided. In this embodiment, two rotating bodies 120a, 120b are provided in parallel on the same shaft portion 22 as shown in the figure. These four rotating bodies 120a and 120b are arranged with an appropriate interval (equal intervals in the figure). The rotating direction of the rotators 120a and 120b is a direction (counterclockwise in FIG. 8) in which the peripheral portion moves toward the non-metal recovery means 13 after closest to the bottom of the bottom surface of the tank 10.

  By the way, as for the rotary bodies 120a and 120b of this embodiment, as shown in detail in FIG. 9, the entire side surface 121 is formed in a circular shape. The insides of the rotating bodies 120a and 120b are hollow so that the magnet 25 can be arranged. In addition, although the magnet 25 is incorporated in the rotating bodies 120a and 120b, the rotating bodies 120a and 120b are made of stainless steel so as not to be affected by the magnetic force. In the axial direction of the shaft portion 22, planes (outer peripheral surfaces) 131a and 131b having appropriate width dimensions are formed. The difference between the rotating bodies 120a and 120b is the length of the outer peripheral surfaces 131a and 131b in the axial direction. Only the difference. As shown in FIG. 9, the outer peripheral surfaces 131 a and 131 b are formed in a circumferential cross section having the same shape as the side surface 121. A gap is provided between the outer periphery of the side surface 121 and the bottom of the tank 10.

  Inside the rotating bodies 120a and 120b, as shown in FIG. 9, a magnet 25 is disposed. The magnets 25 have a rectangular parallelepiped shape, and a set of two magnets is fixed to an iron yoke 126, and the yokes 126 are fixed inside the rotating bodies 120a and 120b. The yoke 126 is composed of a rectangular plate-shaped yoke 127 and a rod-shaped yoke 129. The plate-shaped yoke 127 is formed in a rectangular shape having a predetermined thickness, and the rod-shaped yoke 129 is formed in a rectangular rod shape, and The plate-like yoke 127 is fixed along one long side edge of the one-side rectangular portion. Therefore, the magnet 25 is disposed in a state of being sandwiched between the inner surfaces of the rotating bodies 120a and 120b and the plate-shaped yoke 127, and the rod-shaped yoke 129 is similarly disposed between the rotating bodies 120a and 120b and the plate-shaped yoke 127. The thickness of the rod-shaped yoke 129 is the same as the thickness of the magnet 25. The yoke 126 is such that the long side of the rectangular plate 127 is in the chord direction with respect to the circular shape of the rotating bodies 120a and 120b, and the rod-shaped yoke 129 is fixed to the two long sides of the rectangle. The long side is fixed so as to be along the peripheral side of the rotating bodies 120a, 120. The pair of magnets 25 and 25 provided on the plate-shaped yoke 127 are arranged in alignment with the longitudinal direction of the rod-shaped yoke 129, and the magnet 25 on the side located in the rotational direction of the rotating bodies 120 a and 120 b is the rotating body 20. The magnet 25 on the rear side is fixed so as to be an N pole so as to be an S pole toward the surface. Due to the effect of the yoke 126, the magnetic force is applied only in the direction of the side surface 121, and the magnetic force is not applied to the outer peripheral surfaces 131a and 131b. Ten yokes 126 to which a set of magnets 25 are fixed are arranged at equal intervals. Thereby, the rotating bodies 120a and 120b can adsorb the magnetic metal near the outer periphery of the side surface 121 and move it upward. The internal spaces of the rotating bodies 120a and 120b are formed in a liquid-tight manner.

  In the present embodiment, two rotators 120a and 120b are provided, but the two rotators 120a at the center have magnets 25 arranged on the inner sides of the side surfaces 121 on both the left and right sides. A certain rotating body 120b is disposed only inside the side surface 121 in the center direction of the tank 10. The rotating body 120a is formed with a shorter axial length than the rotating body 20 of the magnetic sorting and collecting apparatus 1. The rotating body 120b is formed to have a shorter axial length than the rotating body 120a.

  By the way, in this embodiment, as FIG. 7-9 shows, the nonmagnetic metal scraping part 134 is arrange | positioned in the clearance gap part formed in the middle of each rotary body 120a, 120b. That is, it is attached to one side surface 121 among the side surfaces 121 on both sides constituting the rotating bodies 120a and 120b. However, since there are three gap portions, they are not provided in all the rotating bodies 120a and 120b, but are provided by selecting one of them. In the present embodiment, the nonmagnetic metal scraping portion 134 is not provided in the leftmost rotating body 120b illustrated in FIG. The nonmagnetic metal scraping portion 134 is made of stainless steel so as not to be affected by the magnet 25, and includes a connecting member 135 and a scraping member 136. The connecting member 135 has one end in the longitudinal direction of the rectangle fixed along the radial direction of the side surface 121, the other end extending in a direction perpendicular to the side surface 121, and the other end of the base being maintained parallel to the side surface 121. A plate-like member formed in an L shape with a connecting portion extending toward the outer peripheral direction of the rotating bodies 120a and 120b. On the other hand, the scraping member 136 has one end in the longitudinal direction of the rectangle connected to the tip of the connecting member 135 and the other end extending rearward in the rotational direction of the rotating bodies 120a and 120b from the outer peripheral direction of the side surface 121. Is formed. The angle of the scraping member 136 with respect to the connecting member 135 is 126 °. The tip of the scraping member 136 is in sliding contact with the bottom surface 15 of the tank 10 so that the nonmagnetic metal deposited on the bottom surface of the tank 10 can be scraped by the rotation of the rotating bodies 120a and 120b. The connecting member 135 is fixed on a radius passing through the centers of the two magnets 25 on the yoke 126, and one connecting member 135 is provided for each yoke 126.

  The nonmagnetic metal recovery means 130 includes a nonmagnetic metal recovery port 13, a bottom surface 115 of the tank 110, and a nonmagnetic metal scraping portion 134, and the nonmagnetic metal scraping portion 134 is scraped. The member 136 forms a predetermined space with the bottom surface 115 of the tank 110, and this space moves to the nonmagnetic metal recovery port 13 as the rotating bodies 120a and 120b rotate. It is possible to move (scrap out) the nonmagnetic metal deposited on the substrate. According to this configuration, both the magnetic metal and the nonmagnetic metal can be recovered very efficiently only by rotating the rotating bodies 120a and 120b.

  The reason why the nonmagnetic metal scraping portion 134 has such a shape is to prevent interference with the scraper 41. In the present embodiment, the non-magnetic metal scraping portion 134 is provided only on the left side surface 121 of the front surface of the rotating bodies 120a and 120b, but is provided on all the side surfaces 121 on which the magnets 25 are disposed. Also good. Further, the nonmagnetic metal scraping portion 134 may be provided with a gap so as not to slide on the bottom surface 15 of the tank 10.

[Embodiment 3]
Next, a third embodiment will be described. In the third embodiment, the rotators 120a and 120b of the second embodiment are replaced with rotators 220 having different configurations. This will be described with reference to FIG. In the rotating body 220, the description of the same configuration as that of the second embodiment is omitted. FIG. 10 is a detailed view showing the rotating body 220 of the magnetic sorting and collecting apparatus 3 according to this embodiment. As shown in FIG. 10, the rotating body 220 is fixed to a hollow shaft portion 222 supported by the bearings 11 and 12 of the tank 110, and can rotate within the tank 10 as the shaft portion 222 rotates. .

  In addition, a magnetic drum 225 is disposed inside the rotating body 220. The magnetic drum 225 is fixed to a shaft portion 235 fixed to the tank 110 so as not to rotate. When viewed from the axial direction, the magnetic drum 225 has a fan shape with a central angle larger than 180 degrees, and has a shape lacking from an obliquely upward rearward of the axial center to an obliquely downward downward of the axial center. The magnetic drum 225 is configured such that only the shaded portion shown in the drawing generates magnetic force in the direction of the side surface 221 and does not generate magnetic force on the inner side and the outer peripheral surface 231 side than the shaded portion.

  In the second embodiment, the upper side of the side plate 43 on the rotating body 120a, 120b side is in sliding contact with the side surface 121. However, in the present embodiment, the scraper 41 may be close to the scraper 41. The upper end of the side plate 43 is fixed so that the magnetic drum 225 is in a missing range. According to this configuration, since the scraper 41 is not in contact with the side surface 221, the wear of the side surface 221 and the scraper 41 can be prevented.

  As mentioned above, although the structure of embodiment of this invention was illustrated so far, each structure should just show the same effect, and of course is not limited to this embodiment.

1: Magnetic sorting and collecting apparatus 10, 110: Tank 13: Non-magnetic metal collecting port 14: Magnetic metal collecting port 15, 115: Tank bottom surface 20, 120a, 120b, 220: Rotating body 21, 121, 221: Side surface of rotating body 22, 222: Shaft portion 25 of rotating body 25: Magnet 26, 126: Yoke 27, 127: Plate-shaped yoke 28, 29: Rod-shaped yoke 30: Non-magnetic metal recovery means 31, 131a, 131b, 231: Outer peripheral surface of rotating body 32, 33: Rectangular plates 34, 134: Nonmagnetic scraping portion 40: Magnetic metal recovery means 41: Scraper 42: Bottom surface portion 43 Side plate portion 50: Liquid (coolant)
51: Coolant tanks 52, 53, 54: Filter 60: Chip discharge nozzle (liquid supply means)
61: Flushing nozzle (liquid supply means / stirring means)
62: Non-magnetic metal sweeping nozzle (liquid supply means / non-magnetic metal dropping means)
70: Liquid outlet 80, 81: Cover (chip guide means)
90: Chip inlet 135: Connecting member 136: Scraping member 225: Magnetic drum 235: Shaft portion of magnetic drum

Claims (10)

A magnetic sorting and collecting device for sorting magnetic metal and non-magnetic metal from chips generated by cutting, and collecting each of them,
A tank capable of storing an appropriate amount of liquid and allowing the introduction of chips,
A magnet was provided inside, and was rotatably supported in the tank so as to move the adsorbable part by the magnet from the submerged area to the outer liquid area when liquid was stored in the tank. A rotating body,
Magnetic metal recovery means for recovering the magnetic metal adsorbed on the rotating body in the liquid outside region;
Nonmagnetic metal recovery means for recovering nonmagnetic metal present in the submerged region;
A magnetic sorting and collecting apparatus comprising:   The magnetic sorting and collecting apparatus according to claim 1, further comprising liquid supply means for supplying liquid into the tank. The nonmagnetic metal recovery means includes
Non-magnetic formed by opening the side surface of the tank located near the boundary between the submerged region and the submerged region and on the side where the rotating body moves from the submerged region to the submerged region A metal recovery port;
A bottom surface of the tank formed in an arc-shaped cross section concentric with a circular locus by an outermost edge when the rotating body rotates in a range from a lower axis of the rotating body to the nonmagnetic metal recovery port;
A nonmagnetic metal scraping portion that is provided on the rotating body and rotates integrally with the rotating body, scrapes nonmagnetic metal deposited on the bottom surface of the tank and moves it to the nonmagnetic metal recovery port; 3. The magnetic sorting and collecting apparatus according to claim 1, wherein the magnetic sorting and collecting apparatus is a nonmagnetic metal collecting means.   Further, the nonmagnetic metal adhering to the magnetic metal adsorbed by the rotating body is subjected to an impact in the liquid outside region, and the nonmagnetic material is separated from the magnetic metal and dropped into the liquid region. The magnetic sorting and collecting apparatus according to any one of claims 1 to 3, further comprising a metal dropping means.   Furthermore, the magnetic selection collection | recovery apparatus in any one of Claims 1-4 provided with the stirring means which stirs the said liquid containing the chip put into the said tank.   The magnetic sorting and collecting apparatus according to any one of claims 1 to 5, further comprising a liquid discharge port provided in the tank for discharging a liquid exceeding a predetermined amount.   The magnetic sorting and collecting apparatus according to any one of claims 1 to 6, further comprising chip guide means for guiding chip immediately after being put into the tank to the submerged region.   The magnet according to claim 1, wherein the rotating body is a rotating body in which large diameter portions and small diameter portions are alternately arranged, and the magnet is provided inside the large diameter portion. Sorting and collecting device.   The rotating body is a rotating body that causes an attractive force of the magnet to act on a side surface of the large-diameter portion, and the magnetic metal recovery unit includes a magnetic metal recovery unit including a scraper that is slidably contacted with the side surface of the rotating body. The magnetic sorting and collecting apparatus according to claim 8. A method of sorting and collecting magnetic metal and non-magnetic metal from chips generated by cutting,
A step of immersing the chips in a separation solution of water or other aqueous solution that promotes separation of the chips adhering to each other;
A step of stirring the separation liquid in which chips are immersed;
Moving the adsorption member that generates magnetic force into the liquid of the separation liquid, and then moving the adsorption member to the outside;
The same kind of liquid as the separation liquid is sprayed on the magnetic metal moved to the outside of the separation liquid by the adsorption member to separate the nonmagnetic metal attached to the magnetic metal, and the nonmagnetic metal is Returning to the separated liquid;
Recovering the magnetic metal adsorbed on the adsorbing member;
Recovering the nonmagnetic metal deposited in the separation liquid;
A method for sorting and collecting chips, comprising:

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