JP2019069843A - Magnetic conveyance device - Google Patents

Abstract

To provide a magnetic conveyance device which can convey a conveyed object without dropping the conveyed object even on a conveyance path having a vertical direction conveyance part and a curved conveyance part.SOLUTION: A magnetic conveyance device 100 includes: a conveyance cylinder 10 formed of a non-magnetic body; a flexible shaft 20 arranged inside of the conveyance cylinder 10; a motor 30 rotating the flexible shaft 20 around an axial line; and a plurality of magnets 50 which are mounted through a fitting member 40 at a position spiral along an outer peripheral surface of the flexible shaft 20 on the outer peripheral surface of the flexible shaft 20 so that N poles and S poles of magnetic poles on the side facing the inner peripheral surface of the conveyance cylinder 10 alternately appear along the spiral fitting direction; where a rough surface processing part 12 extending in a spiral shape on a reverse direction to the spiral direction of the spirally arranged magnets 50 is formed on the outer peripheral surface of the conveyance cylinder 10.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a magnetic transport device.

  A magnetic transfer device for transferring magnetic chips or magnetic articles generated during machining of a magnetic work to a predetermined position in a state where the transfer target is adsorbed by magnetism. Is used. As such a magnetic transport device, one having a configuration as disclosed in, for example, Patent Document 1: Japanese Patent Application Publication No. 2007-230723 is known.

JP 2007-230723 A

  The magnetic transfer device disclosed in Patent Document 1 includes a shaft housed inside a nonmagnetic transfer tube, a plurality of magnets fixed in a spiral at predetermined intervals on the outer peripheral surface of the shaft, and a shaft. A magnetic conveyance device having a motor for rotating the shaft by the motor and transferring the magnetic substance adsorbed to the outer circumferential surface of the conveyance cylinder from one end of the conveyance cylinder to the other end, the outer circumferential surface of the conveyance cylinder, The resistance portion inclined with respect to the axial direction of the transport cylinder is provided on the outer peripheral surface of the transport cylinder from one end in the longitudinal direction toward the other end.

  According to the configuration of the magnetic transfer device disclosed in Patent Document 1, the transfer object magnetically attracted to the outer peripheral surface of the transfer cylinder is moved along the outer peripheral surface of the transfer cylinder with the rotation of the magnet, and the transfer target is transferred to the resistance portion. By applying an object, the object to be transported is transported along the resistance portion. For this reason, when a protrusion is used as the resistance portion as described in the embodiment, the object to be transported separates from the outer peripheral surface (magnet) of the transport cylinder at the position of the protrusion, and the magnetism acting on the object to be transported weakens. There are times when In particular, in the portion where the transport cylinder transports in the vertical direction to the transport cylinder and the transport cylinder bends, there is a problem that when the transport object is separated from the magnet, the transport object falls off from the outer peripheral surface of the transport cylinder by the action of gravity. doing.

  Therefore, the present invention has been made to solve the above-mentioned problems, and the object of the present invention is as follows. That is, an object of the present invention is to provide a magnetic transport apparatus capable of reliably transporting a transport target in the transport direction of the transport cylinder without dropping the transport target from the outer peripheral surface of the transport cylinder.

  As a result of the inventor's earnest research in order to solve the above problems, the following configuration was conceived. That is, according to the present invention, there are provided a transport cylinder made of a nonmagnetic material, a shaft disposed inside the transport cylinder, a motor for rotating the shaft around an axis, and the shaft on the outer peripheral surface of the shaft. A plurality of magnetic poles are sequentially attached through the attachment members at positions spiraling along the outer peripheral surface of the carrier cylinder, and the magnetic poles on the side facing the inner peripheral surface of the transport cylinder are N along the spiral mounting direction. And a magnet disposed in such a manner that a pole and a south pole appear alternately, and a spiral having a direction opposite to a spiral direction of the magnet disposed in the spiral on the outer peripheral surface of the transport cylinder. The magnetic transport device is characterized in that a roughened portion extending in the direction is formed.

  Thus, it is possible to provide a magnetic transport apparatus capable of reliably transporting the transport target in the transport direction of the transport cylinder without dropping the transport target from the outer peripheral surface of the transport cylinder.

  The shaft is a flexible shaft, and the transport cylinder is a horizontal direction transport unit that transports the transport object in the horizontal direction, a vertical direction transport unit that transports the transport object in the vertical direction, and a curved transport unit It is preferable that the roughened portion is formed in a curved conveyance portion of the conveyance cylinder.

  The shaft is a flexible shaft, and the transport cylinder is a horizontal direction transport unit that transports the transport object in the horizontal direction, a vertical direction transport unit that transports the transport object in the vertical direction, and a curved transport unit It is preferable that the roughened portion is formed in the vertical direction transport portion of the transport cylinder.

  Even in the case of a magnetic transfer device having such a three-dimensional transfer path, it is possible to maintain a state in which the object to be transferred is reliably attracted to the outer peripheral surface of the transfer cylinder, and The object to be transported can be transported without dropping the object.

  Further, it is preferable that a rolling element capable of rolling on the inner peripheral surface of the transfer cylinder be attached to the mounting member.

  As a result, even if the transport cylinder is long and the transport cylinder is distorted or bent, or the transport path has a curved transport portion, the shaft is elastically deformed inside the transport cylinder and the magnet is transferred to the transport cylinder. It can be made to rotate reliably inside a conveyance cylinder, without making it contact | abut on the inner peripheral surface of the.

  The roughened portion is preferably formed intermittently.

  Thereby, the roughened part to the outer peripheral surface of a conveyance cylinder can be decreased.

  Moreover, it is preferable that the scraping part is detachably attached to the conveyance direction downstream end edge part of the said conveyance cylinder.

  Thus, the position of the scraping portion and the angle of the scraping plate of the scraping portion can be adjusted by appropriately replacing the scraping portion with the transported product.

  By employing the configuration of the magnetic transfer device according to the present disclosure, it is possible to reliably transfer the transfer target in the transfer direction of the transfer cylinder without causing the transfer object to fall off the outer peripheral surface of the transfer cylinder. An apparatus can be provided. According to such a transport cylinder, even if it is a three-dimensional transport path, the transport object can be transported reliably.

It is a general view of the magnetic conveyance apparatus in this embodiment. It is principal part sectional drawing which shows schematic structure in the conveyance cylinder part of the magnetic conveyance apparatus in this embodiment. It is a top view which shows the attachment state of the attachment body to a flexible shaft, a magnet, and a rolling element. It is an explanatory sectional view showing a fixed state of a mounting object to a flexible shaft. It is explanatory drawing which shows the state of the magnetic pole of the magnet attached to the flexible shaft. FIG. 6 is a cross-sectional view of the transport cylinder corresponding to a portion A of FIG. 5 taken along line VI-VI.

  As shown in FIGS. 1 and 2, the magnetic transfer device 100 according to the present embodiment includes a transfer cylinder 10, a flexible shaft 20 disposed inside the transfer cylinder 10, and a motor for rotating the flexible shaft 20 around its axis. 30 and an attachment member 40 for attaching the magnet 50 and the rolling element 60 in a spiral along the outer peripheral surface of the flexible shaft 20 in the axial direction of the flexible shaft 20. Further, a scraping unit 70 for scraping and separating the object to be transported from the transport cylinder 10 is attached to the downstream end of the transport cylinder 10 in the transport direction.

  The transport cylinder 10 in the present embodiment is formed of a nonmagnetic material represented by stainless steel. The transport cylinder 10 includes a curved transport portion 10A formed of a curved tube, a vertical direction transport portion 10B formed of a straight tube and having the transport direction vertically or vertically inclined, and a horizontal direction having a straight tube and a transport direction horizontal. It is comprised by 10 C of conveyance parts. A roughened portion 12 is formed on the outer peripheral surface of the transport cylinder 10. The roughened portion 12 is formed in a left-handed spiral shape along the outer peripheral surface of the transport cylinder 10 in the axial direction (extension direction) of the transport cylinder 10. Here, the roughened portion 12 having a required width dimension is formed by a known method such as sand blasting. Here, the roughened portion 12 with a width of 6 mm is formed for the transport cylinder 10 with an outer diameter of 50 mm, but the outer diameter of the transport cylinder 10 and the width of the roughened portion 12 are limited to these dimensions. It is not a thing.

  As shown in FIG. 1, the roughened portion 12 in the present embodiment is formed in the curved conveyance portion 10A and the vertical direction conveyance portion 10B of the conveyance cylinder 10. When the roughened portion 12 is formed on the outer peripheral surface of the transport cylinder 10, the magnet 50, which will be described later, is rotated in the inner space of the transport cylinder 10 in the same direction (counterclockwise) as the spiral direction of the roughened portion 12. It is possible to increase the force for transporting the object to be transported adsorbed on the outer peripheral surface of the transport cylinder 10 by the magnetic force of the magnet 50 in the extension direction of the transport cylinder 10.

  As shown in FIGS. 2 to 4, a flexible shaft 20 as a shaft is inserted into the internal space of the transport cylinder 10. The flexible shaft 20 may have a well-known structure in which a plurality of layers of wire strands are alternately wound side by side sequentially from the first layer on the core wire serving as the core, sequentially from the first layer to a predetermined thickness. it can. The axis AX of the flexible shaft 20 is set on the same axis as the axis of the transport cylinder 10. The flexible shaft 20 in the present disclosure is not limited to the known configuration as described above, and rotates around the axis AX in a state of being elastically deformed according to the linear shape in the extension direction of the transport cylinder 10 It is a concept that includes possible structures.

  The output shaft of the motor 30 through the coupling 21 so that the flexible shaft 20 can rotate around the axis AX of the flexible shaft 20 at the first end 20A that is the downstream end of the flexible shaft 20 in the conveyance direction. Are linked. The second end 20B, which is the transport direction upstream end edge of the flexible shaft 20, is attached to a waterproof cap member 22 attached to an open end corresponding to the second end 20B of the transport cylinder 10. It is rotatably held by a bearing 24. As described above, since the motor 30 is not disposed at the open end of the transport cylinder 10 on the second end 20B side, and the waterproof cap member 22 is attached, the second end of the transport cylinder 10 is The 20B side can also be placed in the liquid.

  On the outer peripheral surface of the flexible shaft 20, a plurality of mounting members 40 are attached in a right-handed spiral shape (along the broken line SPL shown in FIGS. 2 and 3) along the extension direction of the axis AX of the flexible shaft 20 There is. The plurality of attachment members 40 are attached around the axis AX of the flexible shaft 20 so as to be sequentially shifted by a required rotation angle. Here, the required rotation angle is 60 degrees. Spiral winding direction according to the locus of the installation position of the mounting member 40 along the direction of the axis AX of the flexible shaft 20 (ie, winding direction of the helix according to the locus of the location of the magnet 50 along the direction of the axis AX of the flexible shaft 20 ) Is the reverse direction (reverse direction) to the winding direction of the spiral of the roughened portion 12. In the present embodiment, the flexible shaft 20 is rotated counterclockwise by the motor 30 in the direction opposite to the direction of the spiral of the mounting member 40 (the magnet 50) (here, right-handed (clockwise)).

  At the attachment portion between the attachment member 40 and the flexible shaft 20, the center lines in the longitudinal direction of each other are orthogonal to each other. Here, as shown in FIG. 4, the flexible shaft 20 is penetrated in a state of being orthogonal to the thickness direction of the mounting member 40, and mounting is performed by the plurality of locking members 42 from the outer surface of the mounting member 40 toward the flexible shaft 20. The member 40 is locked.

  As the locking member 42 in the present embodiment, a sharp locking member 42A whose tip is pointed and a flat locking member 42B whose tip is flat are used. The sharp engagement member 42 A fixes the mounting member 40 to the flexible shaft 20 in a state where the tip end portion thereof is inserted into a groove portion formed by a plurality of strands in the outer peripheral surface of the flexible shaft 20. Further, the flat locking member 42 B fixes the mounting member 40 to the flexible shaft 20 in a state where the tip end portion is in contact with the outer peripheral surface of the flexible shaft 20. By adopting a plurality of types of locking members 42 in this manner, the mounting member 40 can be reliably fixed to the flexible shaft 20 having irregularities on the outer peripheral surface and rotating around the axis AX.

  A magnet 50 and a rolling element 60 are attached to each attachment member 40. The magnet 50 is fixed to the mounting member 40 by a known means such as adhesion. More specifically, as shown in FIGS. 3 to 6, the magnet 50 is formed along the outer peripheral surface of the flexible shaft 20 so that the center line in the longitudinal direction of the magnet 50 and the axis AX of the flexible shaft 20 become parallel. Helical mounted. Since the magnet 50 is attached to the flexible shaft 20 via the attachment member 40, the magnet arrangement angle interval MHK in the circumferential direction of the outer peripheral surface of the flexible shaft 20 is 60 degrees (see FIG. 6).

  As shown in FIG. 5, the magnet 50 is disposed such that the N pole and the S pole appear alternately along the helical attachment direction, as shown in FIG. 5, on the side facing the inner circumferential surface of the transport cylinder 10. . Further, the magnets 50 are disposed such that a part in the longitudinal direction of the adjacent magnets 50 overlaps in the transport direction of the transport cylinder 10 (the extension direction of the flexible shaft 20). Furthermore, the outer surface of the magnet 50 on the side facing the inner circumferential surface of the transport cylinder 10 is formed in an arc-shaped surface that conforms to the inner circumferential surface shape of the transport cylinder 10. With the plurality of magnets 50 at the first end 20A of the flexible shaft 20, the magnetic poles on the side facing the inner circumferential surface of the transport cylinder 10 are made the same and the positions in the extension direction of the flexible shaft 20 are made equal. It is attached.

  The rolling elements 60 are attached to both longitudinal end portions of the attachment member 40. The longitudinal direction of the mounting member 40 is a direction orthogonal to the axis AX of the flexible shaft 20. More specifically, the rolling element 60 is attached to the surface on the upstream side (the second end 20B side) of one longitudinal end portion of the attachment member 40, and the other longitudinal end portion of the attachment member 40 is downstream The rolling element 60 is attached to the surface (the side of the first end 20A).

  Here, the rolling element disposition angular interval THK in the circumferential direction of the outer peripheral surface of the flexible shaft 20 of the rolling element 60 attached to the same attachment member 40 is 120 degrees (see FIG. 4). That is, the rolling element arrangement angle interval is twice the magnet arrangement angle interval. The rolling elements 60 attached to the attachment member 40 in this manner are attached to both end portions of the attachment member 40 located on both sides of the magnet 50 in the longitudinal direction across the magnet 50 as shown in FIGS. 2 and 3 Has been arranged. The longitudinal direction of the magnet 50 is parallel to the axis AX of the flexible shaft 20.

  The rolling element 60 in the present embodiment employs a rotary plate in which a disc made of a synthetic resin material is rotatably supported by the mounting member 40. The rolling element 60 (rotating plate) is at a position separated from the outer peripheral surface of the flexible shaft 20, around the axis parallel to the axis AX of the flexible shaft 20 (on the inner peripheral surface of the conveying cylinder 10). In the direction perpendicular to the extension direction of the transport cylinder 10).

  As described above, in the magnetic conveyance device 100 according to the present embodiment, the flexible shaft 20 disposed inside the conveyance cylinder 10 is elastically deformed in accordance with the linear direction in the extension direction of the conveyance cylinder 10, and the rolling elements 60 become the conveyance cylinder 10. Will roll on the inner circumferential surface of Further, as shown in FIG. 4, the separation distance from the outer peripheral surface of the flexible shaft 20 to the outer surface position on the side facing the inner peripheral surface of the transport cylinder 10 of the magnet 50 is the rolling element 60 from the outer peripheral surface of the flexible shaft 20. Since the distance is shorter than the separation distance to the end position facing the inner circumferential surface of the transport cylinder 10, the magnet 50 is provided on the inner circumferential surface of the transport cylinder 10 even when the transport cylinder 10 has the curved transport portion 10A. There is no contact. Thus, the magnet 50 can be rotated together with the flexible shaft 20 in the inner space of the transfer cylinder 10 without contacting the magnet 50 with the inner circumferential surface of the transfer cylinder 10 in the entire range in the extension direction of the transfer cylinder 10.

  Further, the distance from the outer peripheral surface of the flexible shaft 20 to the outer surface position on the side opposite to the inner peripheral surface of the transfer cylinder 10 of the magnet 50 and the inner peripheral surface of the transfer cylinder 10 of the rolling element 60 from the outer peripheral surface of the flexible shaft 20 It is also possible to adopt a configuration in which the distance to the end position facing the surface is equalized. According to this, the separation distance between the inner peripheral surface of the transfer cylinder 10 and the outer surface of the magnet 50 on the side facing the transfer cylinder 10 becomes short, and the magnetic force on the outer peripheral surface of the transfer cylinder 10 can be strengthened. This is advantageous in that it is possible to more reliably prevent the dropout of the That is, the distance from the outer peripheral surface of flexible shaft 20 to the outer surface position on the side opposite to the inner peripheral surface of transfer cylinder 10 of magnet 50 is the inner periphery of transfer cylinder 10 of rolling element 60 from the outer peripheral surface of flexible shaft 20 It may be equal to or less than the separation distance to the end position facing the surface.

  By adopting such a configuration of the magnetic transport device 100, even if the transport path is long and the transport cylinder 10 is distorted or bent, the transport cylinder 10 does not contact the magnet 50 with the inner circumferential surface of the transport cylinder 10. It can be rotated at a position close to the inner circumferential surface of Thereby, even if it is the conveyance distance which had to be conveyed using two or more sets in the prior art, it becomes possible to convey a conveyance object by one magnetic conveyance apparatus 100.

  Furthermore, even if there is a curved conveyance portion 10A that curves in the longitudinal direction or the lateral direction in the extension direction of the conveyance cylinder 10, the flexible shaft 20 elastically deforms in accordance with the curve shape of the conveyance cylinder 10, and the curved conveyance portion 10A The rolling elements 60 positioned on the outer peripheral side roll on the inner peripheral surface of the transport cylinder 10. Thus, the magnet 50 can be rotated together with the flexible shaft 20 in the internal space of the transfer cylinder 10 without contacting the inner peripheral surface of the transfer cylinder 10. That is, when the curvilinear conveying portion 10A and the vertical direction conveying portion 10B curving three-dimensionally are provided in the conveying cylinder 10, the object to be conveyed adsorbed on the outer peripheral surface of the conveying cylinder 10 by the magnetic force of the magnet 50 is conveyed. It can be transported without generating noise and wear along the three-dimensional shape of.

  Furthermore, since the roughened portion 12 which spirals in the direction opposite to the spiral direction of the magnet 50 is formed on the outer peripheral surface of the transfer cylinder 10, the outer peripheral surface of the transfer cylinder 10 is attracted and held by the magnetic force of the magnet 50. If the object to be conveyed is conveyed, the object to be conveyed can be made to cross the roughening portion 12. By making the conveyance object cross the roughened portion 12 formed on the outer circumferential surface of the conveyance cylinder 10, it is possible to increase the force for advancing the conveyance object in the conveyance direction, and suction on the outer circumference surface of the conveyance cylinder 10 The object to be conveyed does not become a flock, and the object to be conveyed can be prevented from falling off the outer peripheral surface of the conveyance cylinder 10. In addition to this, when the object to be conveyed is conveyed in the vertical direction by the vertical direction conveyance unit 10B, it is possible to prevent the object to be separated from the outer peripheral surface of the vertical direction conveyance unit 10B by the action of gravity.

  In the present embodiment, although the roughening unit 12 is disposed on the curved conveyance unit 10A and the vertical conveyance unit 10B of the conveyance cylinder 10, the curved conveyance unit 10A and the vertical conveyance unit 10B are present. It can also be disposed over the entire range of the transport cylinder 10 regardless of the above. Further, the roughened portion 12 of the transport cylinder 10 can be disposed only on either the curved transport portion 10A or the vertical transport portion 10B of the transport cylinder 10.

  In addition, although the roughened portion 12 in the present embodiment has a single spiral shape continuous in the disposition extension direction of the transport cylinder 10, the transport cylinder 10 is disposed along the outer peripheral surface of the transport cylinder 10. It is also possible to adopt the form of the roughened portion 12 which forms an intermittent spiral shape in the extension direction.

  Further, although the transport cylinder 10 of the three-dimensional transport path is described in the above embodiment, it is also possible to use a magnetic transport apparatus 100 having a transport path for simply moving the transport target to the upper position. it can. In such a magnetic transport apparatus 100, it is sufficient to dispose the simple straight transport cylinder 10 in the vertical direction, so the shaft disposed inside the transport cylinder 10 is a general shaft that is not the flexible shaft 20. It can be used. Furthermore, the arrangement of the rolling elements 60 rolling on the inner peripheral surface of the transport cylinder 10 can be omitted.

  Further, in the present embodiment, although the embodiment is described in which the scraping unit 70 is attached to the downstream end of the transport cylinder 10 in the transport direction (the end on the side where the motor 30 is disposed). It is preferable to make the mounting angle, the mounting position, and the shape of the scraping unit 70 different according to the object to be transported. For this reason, it is preferable that the removing unit 70 be detachably attached to the transport cylinder 10. As such a scraping portion 70, there is provided a winding portion wound around the outer peripheral surface of the transport cylinder 10 and having a winding portion for fastening both ends in the winding direction by screwing etc., and a scraping plate fixed to the winding portion. Etc. can be adopted. In addition, the shape of the winding part of the scraping part 70 and the scraping board is formed in the form according to the conveyance target.

  In addition to the modifications described above, it is also possible to adopt a form in which the modifications described in the embodiment are appropriately combined.

10 transport cylinders,
10A Curved Transport, 10B Vertical Transport, 10C Horizontal Transport,
12 roughened parts,
20 flexible shaft, 20A first end, 20B second end,
21 coupling, 22 cap member, 24 bearing,
30 motors,
40 mounting member, 42 locking member, 42A sharp locking member, 42B flat locking member,
50 magnets,
60 rolling elements,
70 scraping section,
100 magnetic transport device,
AX axis,
A broken line indicating a spiral by the locus of the attachment position of the SPL magnet,
MHK magnet installation angle interval,
THK rolling element installation angle interval

Claims (6)

A transport cylinder made of nonmagnetic material,
A shaft disposed inside the transport cylinder;
A motor for rotating the shaft about an axis;
On the outer peripheral surface of the shaft, a plurality of magnetic poles are sequentially attached at positions spiraling along the outer peripheral surface of the shaft via mounting members, and the magnetic pole on the side facing the inner peripheral surface of the transport cylinder is And a magnet disposed so that an N pole and an S pole appear alternately along the spiral attachment direction,
2. A magnetic transfer device according to claim 1, wherein a roughened portion extending in a spiral shape opposite to the spiral direction of the spirally arranged magnet is formed on the outer peripheral surface of the transfer cylinder. The shaft is a flexible shaft,
The transport cylinder includes a horizontal direction transport unit that transports the transport object in the horizontal direction, a vertical direction transport unit that transports the transport object in the vertical direction, and a curvilinear transport unit.
The magnetic conveyance device according to claim 1, wherein the roughened portion is formed in a curved conveyance portion of the conveyance cylinder. The shaft is a flexible shaft,
The transport cylinder includes a horizontal direction transport unit that transports the transport object in the horizontal direction, a vertical direction transport unit that transports the transport object in the vertical direction, and a curvilinear transport unit.
The magnetic transfer device according to claim 1, wherein the roughening portion is formed in the vertical direction transfer portion of the transfer cylinder.   The magnetic conveyance device according to any one of claims 1 to 3, wherein a rolling element capable of rolling on the inner circumferential surface of the conveyance cylinder is attached to the attachment member.   The magnetic conveyance device according to any one of claims 1 to 4, wherein the roughened portion is formed intermittently.   The magnetic conveyance device according to any one of claims 1 to 5, wherein a scraping unit is detachably attached to the downstream end of the conveyance cylinder in the conveyance direction.