JP4758256B2 - Iron core in conveying apparatus and method for manufacturing the same - Google Patents

Description

  The present invention is preferably used for a conveying device that collects chips such as chips and iron powder discharged from a polishing machine or a cutting machine from the inside of a tank, and further, a coil is wound around a groove portion of an iron core to generate a moving magnetic field. It is related with the iron core in the conveying apparatus which conveys chips, such as a chip and iron powder, and its manufacturing method.

  Chips such as chips and iron powder discharged by a polishing machine or a cutting machine are once collected in a tank. In the tank, the chips and cooling water are separated and the cooling water is circulated to the polishing machine and the cutting machine, so that it is necessary to collect the chips from the tank. As a device for collecting chips from the tank, a conveying device as in Patent Document 1 is known. However, since this transport device uses an expensive oil separator, in a factory where a large number of polishing machines and cutting machines are installed, the equipment cost becomes high and it is difficult to install. Therefore, a conveyance device that can be manufactured at low cost has been desired.

Conventionally, a linear motor as shown in Patent Document 2 is known. According to this, the stator iron core is formed by laminating, the iron core is formed with a plurality of grooves, and the coil is wound around the grooves.
Japanese Patent Laid-Open No. 5-57211 (see pages 2-3 and FIG. 1) JP-A-6-70533 (refer to page 3, FIG. 1)

  When moving a conveyed product with a conveying apparatus, a conveyance path | route may not be formed only in linear form, but it may want to form a conveyance path curved. For example, when the linear motor of Patent Document 2 is installed at a long distance such as that used in railways, a curved conveyance path is formed by combining a single linear motor formed linearly. It can be carried out. However, for example, when the transport apparatus is used in a factory, the transport path is short, so that various shapes must be taken into consideration in the transport apparatus itself in view of the size of the factory and the installation state of the equipment machine. In this case, it is necessary to form the iron core in a curved shape, but in order to form the curved iron core in advance, it is necessary to increase the size of the die, and the production cost of the large die becomes high. In other words, an attempt to make the manufacturing apparatus inexpensive will be wasted. Moreover, in order to punch out the curvilinear iron core, the waste material is increased and the yield is deteriorated. Further, when forming a curved line having an arbitrary angle, the mold cost must be enormous because the mold must be manufactured each time.

  SUMMARY OF THE INVENTION The present invention solves the above-described problems, and manufactures an iron core as a component thereof at a low cost in order to manufacture an inexpensive conveying apparatus, and an iron core in the conveying apparatus and the manufacturing thereof. It aims to provide a method.

The iron core in the transport device according to the present invention is:
In the first aspect of the invention, the iron core includes a core back portion extending along the transport direction, a plurality of core portions protruding from the core back portion, and a groove portion adjacent to the core portion. An iron core in a conveying device that is formed and generates a moving magnetic field by winding a coil around the iron core,
The opposite side of the distal end surface and the core back portion in the core portion is formed by stacking in a direction perpendicular to the conveying direction while being formed as a conveying surface, a concave-shaped curved surface the conveying surface along the conveying direction And the curved surface is formed by pressurizing the transport surface by press working .

According to a second aspect of the present invention, the iron core includes a core back portion extending along the transport direction, a plurality of core portions protruding from the core back portion, and a groove portion adjacent to the core portion. An iron core in a conveying device that is formed and generates a moving magnetic field by winding a coil around the iron core,
The front end surface of the core portion opposite to the core back portion is formed as a conveyance surface and is laminated in a direction orthogonal to the conveyance direction, and the conveyance surface has a convex curved surface along the conveyance direction. It formed having the curved surface is characterized and Turkey have been formed by pressurizing the surface opposite to the conveying surface by press working.

Moreover, the manufacturing method of the iron core in the conveyance apparatus which concerns on this invention is
According to a third aspect of the present invention, the iron core is provided with a core back portion extending along the transport direction, a plurality of core portions protruding from the core back portion, and a groove portion adjacent to the core portion. A method of manufacturing an iron core in a conveying device that generates and generates a moving magnetic field by winding a coil around the iron core, and forming a front end surface of the core portion opposite to the core back portion as a conveying surface It is formed by laminating in a direction orthogonal to the conveyance direction, and is formed by laminating the iron core in a linear form, and on the iron core after lamination, the conveyance surface or the opposite side of the conveyance surface By pressing the surface by press working, a concave or convex curved surface is formed along the transport direction on the transport surface.

  According to a fourth aspect of the present invention, when the curved surface is formed in a concave shape with respect to the transport surface, the groove portion applied to the curved surface is applied to the core back portion formed linearly before the press processing. When the curved surface is formed in a convex shape with respect to the conveying surface, the groove portion on the curved surface is formed on the core back portion formed in a straight line before the press processing. It is characterized in that it is formed with a smaller width than the other groove portions.

  In the invention of claim 5, when forming an opening smaller than the width of the groove at the tip between the adjacent cores, and forming the curved surface concave with respect to the transport surface, The opening on the curved surface is formed wider than the other opening on the core back portion formed linearly before the press processing, and the curved surface is formed in a convex shape with respect to the transport surface In this case, the opening on the curved surface is narrower than the other opening on the core back portion formed in a straight line before the press working.

  In the invention according to claim 6, when the curved surface is formed in a concave shape with respect to the transport surface, the thickness of the curved surface in the core back portion is linearly formed before the press working. When the curved surface is formed in a convex shape with respect to the transport surface, the core formed in a straight line before the press processing is formed. It is characterized by being formed thinner than the thickness of the back portion.

  In the invention according to claim 7, when the curved surface is formed in a concave shape with respect to the transport surface in a state where the core back portions are linearly stacked, the curved surface is formed before the press working. In the case of forming a notch in the end surface opposite to the conveying surface in the core back portion and forming the curved surface in a convex shape with respect to the conveying surface, the curved surface is formed before the pressing. A notch part is formed in the groove part side end face in the core back part.

  In the invention according to claim 8, when the curved surface is formed in a concave shape with respect to the conveying surface, the core portion tip surface of the curved surface is an arc that is concave on the core back side before the press working. When the curved surface is formed in a convex shape with respect to the transport surface, the core portion tip surface of the curved surface is convex with respect to the transport surface before the press working. It is characterized by being formed on the surface.

  According to the present invention, the conveying device winds the coil so that the moving magnetic field can be generated on the iron core. For example, one end of the transfer device is inserted into a tank for collecting chips generated from a polishing machine or a cutting machine, and the chips collected in the tank are moved by exciting the coil of the transfer device. It is discharged to the outside by moving it on the conveying surface. At this time, since the transport surface is formed in a curved shape along the transport direction, the transport device interferes with the members installed around the tank even if other members are installed around the tank. Layout without any problems.

  Moreover, when manufacturing the iron core of this transport device, once a linear primary processed product punched from the material is laminated, and then formed into a curved shape having an arbitrary angle by pressing, in the primary processing Since the yield can be improved and the mold is not enlarged, the iron core can be manufactured at low cost. Further, since the bending angle can be set by the secondary processing of press processing, the bending state of the iron core can be arbitrarily set.

  In the completed iron core, it is desired to make the distance between the tips of adjacent core parts, the thickness of the core back part, etc. as uniform as possible between the curved surface and the straight part other than the curved surface. For this reason, before forming the curved surface, for example, when the curved surface is formed in a concave shape along the conveying direction, the width of the groove portion is increased or the thickness of the core back portion is increased at the portion where the curved surface is formed. It is also desirable to widen the opening at the tip of the core. It is also desirable to form a cut portion on the side opposite to the conveying surface of the core back portion so that a curved surface can be easily formed by press working. Furthermore, it is also necessary to form a concave arc portion on the conveying surface in order to smoothly convey the chips on the conveying surface forming the curved surface.

  In addition, before forming the curved surface, for example, when the curved surface is formed in a convex shape along the conveyance direction, the groove portion is narrowed or the core back portion is thinned at a portion where the curved surface is formed. It is also desirable to narrow the opening at the tip of the core. It is also desirable to form a notch in the groove-side end surface of the core back portion so that a curved surface can be easily formed by pressing. Furthermore, it is also necessary to form a convex arcuate portion on the conveying surface in order to smoothly convey the chips on the conveying surface that forms the curved surface.

  Next, an iron core of a transport device according to an embodiment of the present invention and a method for manufacturing the iron core will be described with reference to the drawings.

  As shown in FIG. 1, the transport device 10 according to the embodiment includes an iron core 11 and a coil 13 that winds a groove 111 formed in the iron core 11. The iron core 11 is formed by laminating a single silicon steel plate or iron plate of magnetic material formed in a thin plate shape in the thickness direction (direction perpendicular to the transport direction) and at equal intervals in the transport direction. A plurality of groove portions 111 and a core portion 112 disposed between the groove portions 111 and 111 adjacent to the groove portion 111 are formed. The base part (lower side in FIG. 1) side of the core part 112 is formed as a core back part 113 that connects the core parts 112 and extends in the longitudinal direction, and the tip of the core part 112 (upper part in FIG. 1). The side is formed as a transport surface 114.

  The conveyance surface 114 of a conveyed product is formed along the direction which straddles the groove part 111, ie, the longitudinal direction of the iron core 11 shown by the arrow A (or B) in FIG. In addition, the conveyance surface 114 may convey a conveyed product directly to the front end surface of the core part 112, and may convey it via one plate. Furthermore, the leading end surface of the core part 112 may be molded with resin, for example, and the conveyed product may be conveyed to the mold surface.

  Further, the groove 111 may be formed to be substantially orthogonal or inclined at a predetermined angle with respect to the conveying direction of the iron core 11.

  A tooth portion 115 protrudes from the both end portions of the leading end surface (conveying surface 114) of the core portion 112 so as to block a part of the entrance portion of the groove portion 112, and a coil 13 is formed between adjacent tooth portions 115 and 115. It is formed as an opening 116 for inserting.

  Coils 13 wound so as to straddle the two groove portions 111 and 111 at two positions are inserted in the groove portion 111 of the iron core 11. In the embodiment, in the coil 13, a U-phase coil, a V-phase coil, and a W-phase coil are wound around the groove portion 111 of the iron core 11 in order, and a combined magnetic field is generated by flowing a three-phase alternating current.

  As shown in FIG. 2, the iron core 11 is formed so as to be able to change the transport direction by forming a curved portion 15. That is, the iron core 11 is formed with the straight portion 17 and the curved portion 15. When forming this curved part 15, as shown in FIG. 3, it is performed by press work. In this case, the iron core 11 is first punched into a straight line by primary processing and laminated. After that, as shown in FIG. 3A, the receiving block 20 having the V-shaped opening 21 is pressed so as to support both sides of the portion where the curved portion 15 of the iron core 11 is formed. In the press working, the pressurizing body 22 is brought into contact with the end surface (the groove 111 side) of the core back portion 113 where the curved portion 15 of the iron core 11 is formed, and the pressing is performed by a press as shown in FIG. Bending is performed by pressing.

  In this case, the press-pressing surface is a portion where the iron core 11 has a strength capable of withstanding the press-pressing and is a surface on the side orthogonal to the stacking direction, that is, the teeth portion 115 side of the iron core 11. It is set to either the conveying surface 114 side or the end surface side of the core back portion 113 on the opposite side.

  At this time, when forming the bending portion 15 in the iron core 11, the dimensions of the portions that affect the processing of the bending portion 15 are changed in advance during the primary processing of the iron core 11. In this case, the dimensions differ depending on the direction of bending. For example, as shown in FIG. 3, when pressure is applied from the conveying surface 114 side, as shown in FIG. 4, a groove portion is formed on the site where the bending portion 15 (see FIG. 3) is formed. The width L1 of 111A is formed wider than the width L of the groove 111 on the straight line portion 17 (see FIG. 3). Further, the width dimension M1 of the opening portion 116A between the teeth portions 115A and 115A applied to the forming portion of the curved portion 15 is formed wider than the width dimension M of the opening portion 116 between the teeth portions 115 and 115 applied to the linear portion 17. . When the curved portion 15 is formed, the groove portion 111 and the opening portion 116 are contracted.

  When the pressurization direction is opposite to the above, that is, when pressurization is applied from the end surface side of the core back portion 113 to the conveyance surface side, the width of the groove portion 111A and the width of the opening portion 116A applied to the formation portion of the curved portion 15. Is previously formed narrower than the groove 111 and the opening 116 for the linear portion 17.

  Further, the thickness T1 of the core back portion 113A applied to the forming portion of the bending portion 15 is formed to be thicker than the thickness T of the core back portion 113 applied to the straight portion 17 when the pressure is applied from the conveying surface 114 side to the core back portion 113 side. Has been. At this time, as shown in FIG. 5, it is desirable to form the cut portions 117 at a plurality of locations on the surface opposite to the conveying surface 114 in the thick core back portion 113A, as shown in FIG.

  Further, as shown in FIG. 6, if a concave arcuate portion 118 is formed on the core back portion 113 side on the conveyance surface 114 of the core portion 112 at the portion where the curved portion 15 is formed, the conveyed product (chip or iron It can be smoothly conveyed when conveying chips such as powder.

  When the pressurizing direction is reversed, that is, when pressurizing from the core back part 113 side toward the conveying surface 114 side, the opposite is true, that is, the thickness T1 of the core back part 113 applied to the curved part 15 is the thickness applied to the linear part 17. It is preferably formed thinner than T, and the cut portion 117 is formed from the groove 111 side of the core back portion 113. Furthermore, it is desirable that the arc portion 118 formed on the conveyance surface 114 of the core portion 112 is formed to be convex with respect to the conveyance surface 114.

  Further, by pressing the iron core 11 laminated linearly in the primary processing by the secondary processing, the bending angle can be arbitrarily set as shown in FIGS.

  Next, the operation of the transfer device 10 configured using the iron core formed as described above will be described.

  The transport apparatus 10 according to the embodiment is used by molding the core 11 configured as described above with a resin so as to cover the core back portion 113, the transport surface 114, and the coil 13. As shown in FIG. 7, one end of the transfer device 10 is inserted into the tank 25, and the transfer device 10 is disposed obliquely upward from the tank 25. Then, the transfer device 10 goes from the portion protruding from the tank 25 to the upper side through the first curved portion 15 and becomes substantially horizontal through the second curved portion 16 curved in the reverse direction at a predetermined position. Is formed. The first curved surface 15 is formed in a concave shape with respect to the conveyance surface 114, and the second curved surface 16 is formed in a convex shape with respect to the conveyance surface 114. In FIG. 7, the coil 13 is actually molded, but is drawn with a solid line for the following explanation of the synthetic magnetic field and to indicate the conveyance direction.

  When a three-phase alternating current is passed through the coil 13 in this state, the U-phase coil, the W-phase coil, and the V-phase coil each draw a sinusoidal waveform that is 120 degrees out of phase as shown in FIG. For example, if three positions that pass with time t in FIG. 8 are selected and the respective positions are time points P1, P2, and P3, the combined magnetic fields at the time points P1, P2, and P3 are expressed as shown in FIG. That is, since the maximum magnetic force at each of the time points P1, P2, and P3 is shifted, this becomes a moving magnetic field that moves with time, and the iron powder placed on the transport surface 151 of the transport device 10 is transported. When the transported iron powder is transported upward on the straight portion 17 of the transport device 10, the transported iron powder is transported further upward on the straight portion 17 through the first bending portion 15. It is conveyed in a substantially horizontal direction on the straight portion 17 via the bending portion 16. Then, the conveyed chips are dropped on an iron powder tray (not shown) disposed outside at the other end of the conveying device 10.

  As described above, since the transport device 10 of the embodiment is formed by curving the iron core 11 along the transport direction, even if an interference is installed around the tank 25, the transport device 10 can be placed at an arbitrary position. Can be installed. In addition, the iron core 11 is punched in a straight line by primary processing and laminated, and then secondary processing is performed by pressing to improve the yield of the material, increase the size of the mold, and various types of molds. Therefore, the iron core 11 can be manufactured at a low cost.

It is a perspective view which shows the basic composition in the conveying apparatus of this invention. It is a top view which shows the curved iron core of one form of this invention. It is a top view which shows the manufacturing method of the iron core which curves. It is a top view of the iron core which made the core back part thick in order to curve an iron core. It is a top view of the iron core which formed the notch part in the iron core of FIG. It is a top view of the iron core which formed the circular arc part in the core part front-end | tip part in a curved part. It is a perspective view which shows the arrangement | positioning state of a conveying apparatus. It is a wave form diagram which shows the three-phase alternating current of a coil. It is a wave form diagram which shows the synthetic magnetic field in 3 positions in FIG.

Explanation of symbols

10, conveying device 11, iron core 13, coil 15, bending portion 17, linear portion 111, groove portion 112, core portion 113, core back portion 114, conveying surface 115, teeth portion 116, opening portion 117, notch portion 118, Arc part

Claims (8)

An iron core is formed including a core back portion extending along the conveying direction, a plurality of core portions protruding from the core back portion, and a groove portion adjacent to the core portion, and a coil is formed on the iron core. An iron core in a conveying device that generates a moving magnetic field by winding
The opposite side of the distal end surface and the core back portion in the core portion is formed by stacking in a direction perpendicular to the conveying direction while being formed as a conveying surface, a concave-shaped curved surface the conveying surface along the conveying direction An iron core in a conveying apparatus , wherein the curved surface is formed by pressurizing the conveying surface by pressing . An iron core is formed including a core back portion extending along the conveying direction, a plurality of core portions protruding from the core back portion, and a groove portion adjacent to the core portion, and a coil is formed on the iron core. An iron core in a conveying device that generates a moving magnetic field by winding
The front end surface of the core portion opposite to the core back portion is formed as a conveyance surface and is laminated in a direction orthogonal to the conveyance direction, and the conveyance surface has a convex curved surface along the conveyance direction. It has been formed, the curved surface is, the iron core in the conveyance apparatus, wherein the benzalkonium be formed by pressurizing the surface opposite to the conveying surface by press working. A core back part extending along the transport direction, a plurality of core parts protruding from the core back part, and a groove part adjacent to the core part are formed to form an iron core, and a coil is formed on the iron core. A method of manufacturing an iron core in a transport device that generates a moving magnetic field by winding
Forming the front end surface of the core portion opposite to the core back portion as a conveying surface and laminating in a direction perpendicular to the conveying direction,
The iron core is formed by laminating in a linear state, and the conveying surface is formed by pressing the conveying surface or a surface opposite to the conveying surface to the iron core after lamination by pressing. A method of manufacturing an iron core in a transport device, wherein a concave or convex curved surface is formed along the transport direction. In the case where the curved surface is formed in a concave shape with respect to the transport surface, the groove portion applied to the curved surface is formed with a larger width than the other groove portions applied to the core back portion formed linearly before the press working. ,
When the curved surface is formed in a convex shape with respect to the transport surface, the groove portion on the curved surface is formed with a smaller width than the other groove portions on the core back portion formed in a straight line before the press working. To
The manufacturing method of the iron core in the conveying apparatus of Claim 3 characterized by the above-mentioned. At the tip between adjacent core parts, an opening having a width smaller than the width of the groove is formed,
In the case where the curved surface is formed in a concave shape with respect to the transport surface, the opening on the curved surface is formed wider than the other openings on the core back portion formed in a straight line before the press working. And
When the curved surface is formed to be convex with respect to the transport surface, the opening on the curved surface is narrower than the other opening on the core back portion formed in a straight line before the press working. Forming,
The manufacturing method of the iron core in the conveying apparatus of Claim 3 or 4 characterized by the above-mentioned. When the curved surface is formed in a concave shape with respect to the transport surface, the thickness of the curved surface in the core back part is formed thicker than the thickness of the core back part formed in a straight line before the press processing,
When the curved surface is formed to be convex with respect to the transport surface, the thickness of the curved surface in the core back portion is formed to be thinner than the thickness of the core back portion formed in a straight line before the press processing. ,
A method for manufacturing an iron core in a conveying apparatus according to any one of claims 3, 4 and 5. In the state where the core back portion is laminated linearly,
When forming the curved surface in a concave shape with respect to the conveying surface, before the press processing, forming a cut portion on the end surface opposite to the conveying surface in the core back portion forming the curved surface,
When forming the curved surface in a convex shape with respect to the transport surface, before the press processing, forming a cut portion in the groove side end surface of the core back portion forming the curved surface,
The manufacturing method of the iron core in the conveying apparatus in any one of Claim 3, 4, 5 or 6 characterized by the above-mentioned. When the curved surface is formed in a concave shape with respect to the transport surface, the core portion front end surface of the curved surface is formed into an arc surface that is concave on the core back side before the press working,
When the curved surface is formed in a convex shape with respect to the transport surface, the core portion tip surface of the curved surface is formed into an arc surface that is convex with respect to the transport surface before the press processing.
The manufacturing method of the iron core in the conveying apparatus in any one of Claim 3, 4, 5, 6 or 7 characterized by the above-mentioned.

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