JP2007230723A - Magnetic substance transport device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a magnetic substance transport device capable of efficiently and surely transporting even a fine magnetic substance by a simple structure. <P>SOLUTION: This magnetic substance transport device comprises a shaft stored in a nonmagnetic substance outer tube 24, permanent magnets spirally fixed onto the outer peripheral surface of the shaft at predetermined intervals from the axial one end to the axial other end, and a motor 12 connected to the shaft. Protrusion parts 30 serving as a resistance part are spirally or intermittently formed on the outer peripheral surface of the nonmagnetic substance outer tube 24. A magnetic substance powder 40 attracted to the outer peripheral surface of the nonmagnetic substance outer tube 24 is transported to the axial end part along the protrusion parts 30 by rotating the permanent magnets by the rotation of the shaft. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention provides, for example, magnetic metal materials such as cutting and grinding of magnetic metal materials, and separating and conveying cutting chips and chips generated during cutting, or conveying magnetic parts such as bolts, nuts, and screws. The present invention relates to a body conveyance device.

  Conventionally, in a magnetic material transport device disclosed in Patent Document 1 and the like, a small block-shaped permanent magnet is helically fixed to an outer peripheral portion of a shaft material such as a magnetic material, so that a cylindrical outer member made of a non-magnetic material is used. The permanent magnet is inserted into the cylinder and is rotatable together with the shaft material in the outer cylinder. When a magnetic material such as cutting dust is attracted to the outer surface of the outer cylinder by the internal permanent magnet and the shaft inside the outer cylinder rotates, the cutting dust is applied to the outer cylinder surface by the magnetic force of the permanent magnet fixed in a spiral shape. Are adsorbed and conveyed along the outer peripheral surface so as to draw a spiral from one end to the other end.

Further, Patent Document 2 proposes a magnetic material transport device in which a cylindrical magnet body in which a magnetic pole is spirally formed is fitted in a nonmagnetic outer cylinder. In addition, Patent Document 3 discloses an apparatus that separates chips discharged from a machine tool from cutting oil by a magnetic material conveying apparatus as disclosed in Patent Document 1.
Japanese Utility Model Publication No. 50-128788 Japanese Patent Laid-Open No. 10-139161 Japanese Patent Laid-Open No. 11-48081

  However, in the technique disclosed in Patent Document 1, the size of the magnetic material that can be attracted to and transported by the permanent magnet by the permanent magnet is limited by the magnetic force and the arrangement pitch of the permanent magnet. In addition, when the magnetic force of the permanent magnet is increased, the magnetic powder is strongly adsorbed by each permanent magnet and rotates together with the permanent magnet at the adsorption position on the outer periphery of the outer cylinder and stays at that position. It falls into a state that does not move in the direction. Further, if the magnetic force of the permanent magnet is weakened, the conveying force is reduced and the conveying efficiency is deteriorated. Therefore, in general, fine chips with a size of chips and cutting chips of 100 μm or less are stably attracted to the internal permanent magnet, and the same permanent material remains while the chips are adsorbed on the outer peripheral surface of the cylindrical body. There was a problem that the outer cylinder surface was rotated by being attracted by the magnet and was not transferred in the axial direction.

  Further, Patent Document 2 discloses that a large magnetic material such as a bolt can be efficiently conveyed. However, the conveyance of fine chips has the same problems as described above. Furthermore, the apparatus configuration of Patent Document 2 is complicated and expensive.

  In addition, Patent Document 3 can efficiently separate the cutting oil and the chips, but has the same problems as Patent Document 1 and does not disclose conveyance of a magnetic material such as fine chips.

  The present invention has been made in view of the above-described problems of the prior art, and an object thereof is to provide a magnetic material transport apparatus that can transport a fine magnetic material efficiently and reliably with a simple structure.

  The present invention relates to a shaft housed inside a non-magnetic outer cylinder, a permanent magnet helically fixed from one end to the other end in the axial direction at a predetermined interval on the outer peripheral surface of the shaft, and the shaft And a magnetic body transporter configured to transfer a magnetic body adsorbed on an outer peripheral surface of the nonmagnetic outer cylinder to an axial end portion by a rotational movement of the permanent magnet by the rotation of the shaft. A resistance portion inclined with respect to the axial direction of the nonmagnetic outer cylinder is provided on the outer peripheral surface of the nonmagnetic outer cylinder, and the outer peripheral surface of the nonmagnetic outer cylinder is directed from one end to the other end in the longitudinal direction. And a magnetic material transport device provided.

  The resistance portion is a ridge formed in a spiral shape on the outer peripheral surface of the nonmagnetic outer cylinder.

  The resistance portion is formed by intermittently fixing a linear member of a non-magnetic material to the outer peripheral surface of the non-magnetic outer tube from one end to the other end in the longitudinal direction and partially overlapping in the circumferential direction. It consists of.

  According to the magnetic material transport device of the present invention, by providing a resistance portion such as a ridge portion made of a non-magnetic material on the outer peripheral surface of the outer cylinder made of a non-magnetic material, the magnetic material moving on the outer peripheral surface is prevented. A force acts in the axial direction of the outer cylinder along the resistance portion, and even a magnetic body such as fine chips can be reliably conveyed in the axial direction of the outer cylinder.

  Hereinafter, an embodiment of a magnetic material transport device of the present invention will be described with reference to FIGS. As shown in FIGS. 1 and 2, in the magnetic material transport device 10 of this embodiment, a driving motor 12 is attached to a rectangular support plate 16 having an appropriate thickness via a coupling 14. The support plate 16 has a U-shaped cross section, and a cover member 18 having an appropriate length is attached to form a support portion 20. Further, as shown in FIG. 3, a discharge port 22 is formed at the bottom of the support portion 20.

  One end of a cylindrical nonmagnetic outer cylinder 24 made of a nonmagnetic material is attached to the center of the inner surface of the support portion 20 of the support plate 16, and a rectangular shape is attached to the other end of the nonmagnetic outer cylinder 24. The formed end plate 26 is attached. A barrier plate 25 is fixed to the lower surface of one end portion of the nonmagnetic outer cylinder 24 so as to face the discharge port 22.

  The non-magnetic outer cylinder 24 is provided with a flange member 28 having a substantially U-shaped cross section in a state in which the side peripheral surface is included from below. One end of the eaves member 28 is fitted into the inside of the support portion 20 and fixed with a screw (not shown). The other end of the flange member 28 is also fixed by screws or the like (not shown) so as to surround the side peripheral surface of the end plate 26.

  On the outer peripheral surface 24a of the non-magnetic outer cylinder 24, a ridge portion 30 that is a resistance portion is provided in a spiral shape. The ridge 30 is formed by fixing a non-magnetic wire or the like in a spiral shape by welding or the like. For example, when the spiral rotates counterclockwise as viewed from the motor 12 side, the spiral is formed in a direction approaching the motor 12.

  As shown in FIG. 3, a magnetic shaft 32 formed in a columnar shape is fitted into the nonmagnetic outer cylinder 24, and both ends of the nonmagnetic outer cylinder 24 are formed by shaft portions 32 a and 32 b protruding at both ends. The support plate 16 and the end plate 26 are rotatably supported by bearings 34 such as bearings provided in the respective portions. A shaft portion 32 a on the motor 12 side of the shaft 32 is connected to the coupling 14 and is connected to the rotation shaft of the motor 12. A large number of permanent magnets 36 are alternately fixed to the outer periphery of the shaft 32 in a spiral manner at regular intervals from one end to the other end in the axial direction.

  Next, operation | movement of the magnetic body conveying apparatus 10 of this embodiment is demonstrated. First, when the apparatus is activated, the rotation of the motor 12 is transmitted to the shaft 32 via the coupling 14 and starts rotating. At this time, the rotation direction is counterclockwise when viewed from the motor 12 side, and the spiral of the protrusion 30 rotates in a direction approaching the motor 12 side.

  When the magnetic powder 40 such as cutting chips or chips falls on the outer peripheral surface 24 a of the nonmagnetic outer cylinder 24, the outer peripheral surface of the nonmagnetic outer cylinder 24 is generated by the magnetic force of the permanent magnet 36 fixed to the shaft 32. The magnetic powder 40 is adsorbed on 24a. Then, the magnetic field moves in accordance with the rotation of the permanent magnet 36, and the magnetic powder 40 starts to move along the outer peripheral surface 24a in accordance with the movement of the magnetic field. At that time, the magnetic powder 40 hits the ridge 30 provided on the outer peripheral surface 24 a of the nonmagnetic outer cylinder 24, the movement path is restricted, and the axial force acts, and a spiral shape is formed along the ridge 30. The outer peripheral surface 24a of the nonmagnetic outer cylinder 24 is conveyed to the motor 12 side.

  The magnetic powder 40 conveyed to the end position of the ridge 30 at the end of the nonmagnetic outer cylinder 24 located on the support portion 20 side hits the barrier plate 25 at the end of the ridge 30, and the nonmagnetic outer cylinder 24 It peels from the outer peripheral surface 24a, falls, and is discharged from the discharge port 22 on the bottom surface of the support portion 20.

  Next, the usage method of this magnetic body conveying apparatus 10 is demonstrated. For example, when the metal member is cut by a cutting device (not shown) or the like, it is installed at a position where the magnetic powder 40 such as fine chips and chips falls. At this time, it is preferable to give an appropriate inclination so that the motor 12 side is up. And it installs so that the chips etc. which are the magnetic powder 40 may fall in the vicinity of the lower end of the inclined non-magnetic outer cylinder 24.

  According to the magnetic material conveying apparatus 10 of this embodiment, a permanent magnet fixed to the outer periphery of the shaft 32 by providing a resistance portion such as the ridge 30 on the outer peripheral surface 24a of the nonmagnetic outer cylinder 24 in a spiral shape. Even the fine magnetic powder 40 attracted by the magnetic force of 36 and adhered to the non-magnetic outer cylinder 24 can be efficiently and surely conveyed along the protrusion 30 in the axial direction of the non-magnetic outer cylinder 24. . Further, since the protrusion 30 is simply provided in a spiral shape on the non-magnetic outer cylinder 24, the structure is simple and the cost is low.

  Note that the magnetic material transport device of the present invention is not limited to the above embodiment, and as shown in the figure, the resistance portion formed on the nonmagnetic material outer cylinder 24 may not be the entire circumference. It may be a ridge 38 formed partly intermittently and with a partly overlapping w in the circumferential direction.

  As for the action of the ridge portion 38, first, when the magnetic powder 40 adheres to the outer periphery of the nonmagnetic outer cylinder 24 and rotates and hits the ridge portion 38, it moves along the ridge portion 38 in the axial direction. Then, after passing the tip, the magnetic powder 40 comes off the protruding portion 38, rotates again on the outer periphery of the nonmagnetic outer cylinder 24, and hits the next protruding portion 38 due to a partial overlap w. Thereby, it moves to an axial direction again and this is repeated, and the magnetic body powder 38 is conveyed in an axial direction. Also with this structure, the same effects as in the above embodiment can be obtained, and the formation of the protrusions is easy.

  In addition to the protrusions, the resistance portion may be a resistance that allows the magnetic powder to rotate around the side circumference, and may have a shape that can impart a force in the conveying direction to the magnetic powder. Therefore, it may be a groove shape or a rough surface. Furthermore, the shape and material of each member can be appropriately changed.

It is a schematic perspective view which shows the magnetic body conveying apparatus of one Embodiment of this invention. It is a top view of the magnetic substance conveying apparatus of this embodiment. It is AA sectional drawing of FIG. It is a partially broken front view of the non-magnetic body outer cylinder of the magnetic body conveying apparatus of other embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Magnetic body conveying apparatus 12 Motor 14 Coupling 20 Support part 22 Discharge port 24 Nonmagnetic outer cylinder 28 Girder member 30 Projection part 32 Shaft part 32a, 32b Shaft part 34 Bearing 36 Permanent magnet 40 Magnetic powder

Claims (3)

  A shaft housed inside a non-magnetic outer cylinder, a permanent magnet helically fixed from one end to the other end in the axial direction at a predetermined interval on the outer peripheral surface of the shaft, and a motor connected to the shaft A magnetic material transporting device configured to transfer the magnetic material attracted to the outer peripheral surface of the non-magnetic material outer cylinder to the axial end portion by the rotational movement of the permanent magnet by the rotation of the shaft, A resistance portion inclined with respect to the axial direction of the non-magnetic outer cylinder is provided on the outer peripheral surface of the non-magnetic outer cylinder on the outer peripheral surface of the non-magnetic outer cylinder from one end to the other end in the longitudinal direction. Magnetic material transport device.   2. The magnetic material transport device according to claim 1, wherein the resistance portion is a ridge formed in a spiral shape on an outer peripheral surface of the non-magnetic material outer cylinder. The resistance portion is formed by intermittently fixing a linear member of a non-magnetic material to the outer peripheral surface of the non-magnetic outer tube from one end to the other end in the longitudinal direction and partially overlapping in the circumferential direction. The magnetic material conveying apparatus according to claim 1.

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