JP2016021306A - Coating die for straight-angle enamel wire and method for producing straight-angle enamel wire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coating die for a straight-angle enamel wire having features of both a solid die and an assembled dies and to provide a method for producing a straight-angle enamel wire using the same.SOLUTION: There is provided a coating die for a straight-angle enamel wire 10 which is used for applying an insulating coating around a straight-angle conductor wire 1 and comprises two or more first die pieces 11 having a corner R part opposed to a corner part of the straight-angle conductor wire 1 and two or more second die pieces 12 and 13 having a flat part opposed to a flat part of the straight-angle conductor wire 1, wherein the first die pieces 11 and the second die pieces 12 and 13 are detachably assembled to each other to form a die hole for inserting the straight-angle conductor wire 1.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a flat die enameled wire coating die and a method for producing a flat enameled wire.

  Solid dies and assembled dies are known as coating dies for applying an insulating paint around a rectangular conductor wire.

  Solid dies have a fixed shape and dimensions of the die hole, so the gap between the die hole and the conductor wire to be applied can be controlled with high accuracy, and the insulation paint is evenly connected to the conductor wire. There exists the feature which can be apply | coated to the circumference | surroundings (for example, refer patent document 1). However, since it is necessary to produce a single product according to the size (thickness, width, chamfer R), there are disadvantages that the manufacturing cost is high and it is difficult to cope with a short delivery time.

  On the other hand, assembled dies have the feature that one set (four pieces) of die parts can accommodate flat conductor wires of various dimensions by adjusting the amount of insertion between the die main part and the insertion hole when combining the die parts. Have. That is, since it is not necessary to produce a single product in accordance with the size, the manufacturing cost can be suppressed, and it is possible to cope with a short delivery time. Further, since disassembly and assembly are easy, there is an advantage that dice can be exchanged without cutting a flat conductor wire (see, for example, Patent Document 2). However, there is a drawback that the coating amount of coating becomes non-uniform in the circumferential direction of the conductor wire (especially at the corners).

  In addition, Patent Document 3 proposes a split-type coating die as a coating die in which the advantage of the assembly die that enables disassembly and assembly is added to the advantage of the solid die.

JP 2011-142030 A JP 2013-20742 A JP2013-161675A

  However, according to Patent Document 3, in order to deal with flat conductor wires of various dimensions, it is necessary to produce a single product in accordance with the size, like a solid die.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a flat enameled wire coating die having the features of both solid dies and assembled dies, and a method for producing a flat enameled wire using the die.

  In order to achieve the above object, the present invention provides the following flat enameled wire coating die and a method for producing a flat enameled wire.

[1] A coating die for applying an insulating paint around a rectangular conductor wire, two or more first die pieces having a corner R portion facing a corner portion of the rectangular conductor wire, and the rectangular Two or more second die pieces having a flat portion facing the flat portion of the conductor wire, and the first die piece and the second die piece are detachably assembled to each other, and A flat enameled wire coating die with a die hole through which the conductor wire is inserted.
[2] The flat enameled wire coating die according to [1], comprising four first die pieces and four second die pieces.
[3] The flat enameled wire coating die according to [1], comprising two first die pieces and two second die pieces.
[4] The flat enameled wire coating die according to any one of [1] to [3], wherein the second die piece has a plurality of protrusions provided on a surface where the die hole is formed.
[5] The flat enameled wire coating die according to any one of [1] to [4], wherein the first die piece has a plurality of protrusions provided on a surface forming the die hole.
[6] A method for producing a flat enameled wire, including a step of applying an insulating coating around a flat conductor wire using the flat enameled wire coating die according to any one of [1] to [5].

  ADVANTAGE OF THE INVENTION According to this invention, the manufacturing method of the flat enameled wire using the die | dye for flat enameled wire provided with the characteristics of both a solid die and a set die and the said die can be provided.

It is a cross-sectional view of the flat enameled wire coating die according to the first embodiment of the present invention (a state where the flat conductor wire is inserted through the die hole). FIG. 2 is a top view of FIG. 1. It is a cross-sectional view which shows the modification of FIG. It is a cross-sectional view of a flat enameled wire coating die according to a second embodiment of the present invention (a state in which a flat conductor wire is inserted through a die hole). It is a cross-sectional view of a flat enameled wire coating die according to a third embodiment of the present invention (a state in which a flat conductor wire is inserted through a die hole).

[Coating dies for flat-angle enameled wire]
A flat enameled wire coating die according to an embodiment of the present invention is a coating die for applying an insulating paint around a flat conductor wire, and has a corner R portion facing the corner portion of the flat conductor wire. Two or more first dice pieces and two or more second dice pieces having a flat portion facing the flat portion of the flat conductor wire, the first dice piece and the second dice The pieces are assembled to be detachable from each other to form a die hole through which the flat conductor wire is inserted. Here, “facing” means facing when a rectangular conductor wire is inserted through the die hole.

(First embodiment)
FIG. 1 is a cross-sectional view of a flat enameled wire coating die (a state in which a flat conductor wire is inserted through a die hole) according to a first embodiment of the present invention. FIG. 2 is a top view of FIG.

  The flat enameled wire coating die 10 according to the first embodiment of the present invention includes four first die pieces 11 having corner R portions facing the corners of the flat conductor wire 1, and the flat conductor wire 1. Four second die pieces 12 and 13 having a flat portion facing the flat portion, and the first die piece 11 and the second die pieces 12 and 13 are assembled so as to be detachable from each other, so that they are rectangular conductors. A die hole through which the wire 1 is inserted is formed.

  Each of the four first die pieces 11 has a corner R portion facing each of the four corner portions of the flat conductor wire 1. The shapes of the four first die pieces 11 are the same, and the radius of curvature of each corner R portion is the same. In order to respond to various corner shapes of the flat conductor wire 1, it is desirable to prepare a plurality of types of first die pieces 11 having corner R portions with different curvature radii.

  The second die piece includes two die pieces 12 facing the flat portion in the width direction of the flat conductor wire 1 and two die pieces 13 facing the flat portion in the thickness direction of the flat conductor wire 1. The second die piece preferably includes only a flat portion without having a curved portion (a part of the corner R portion). The two die pieces 12 have the same length, and the two die pieces 13 have the same length. In order to respond to various widths and thicknesses of the flat conductor wire 1, it is desirable to prepare a plurality of types of second die pieces 12, 13 having flat portions having different lengths.

  The first die piece 11 and the second die pieces 12 and 13 are assembled so as to be detachable from each other, thereby forming a rectangular die hole (four corners are R-shaped) through which the flat conductor wire 1 is inserted. The means for assembling is not particularly limited, and various means can be adopted. For example, as shown in FIG. 2, the ant tenon 12 a formed on the second die piece 12 can be assembled into the dovetail groove 11 a formed on the first die piece 11. Similarly, it can be assembled by fitting dovetails 13a formed on the second die piece 13 into dovetail grooves 11a formed on the first die piece 11 (not shown). On the contrary, it is good also as a structure which forms an ant tenon in the 1st die piece 11, and forms an ant groove in the 2nd die pieces 12 and 13. FIG.

FIG. 3 is a cross-sectional view showing a modification of FIG.
The flat enameled wire coating die 20 according to the modification of the first embodiment is the first in that the second die pieces 12 and 13 have a plurality of protrusions 21 provided on the surface where the die holes are formed. This is different from the flat enameled wire coating die 10 according to the embodiment.

  The protrusion 21 may be provided only on either the second die piece 12 or the second die piece 13. The shape, height, installation position, and number of the protrusions 21 are not particularly limited and can be adjusted as appropriate. For example, the embodiment disclosed in Patent Document 1 (Japanese Patent Application Laid-Open No. 2011-142030) described above can be employed. Although the protrusion 21 can be provided toward the first die piece 11, it is preferably provided toward the second die pieces 12 and 13.

(Second Embodiment)
FIG. 4 is a cross-sectional view of a flat enameled wire coating die (a state in which a flat conductor wire is inserted through a die hole) according to a second embodiment of the present invention.

  The flat enameled wire coating die 30 according to the second embodiment of the present invention includes two first die pieces 31 having corner R portions facing the corners of the flat conductor wire 1, and the flat conductor wire 1. Two second die pieces 12 having a flat portion facing the flat portion, and the first die piece 31 and the second die piece 12 are assembled so as to be detachable from each other, and the flat conductor wire 1 is inserted. A die hole is formed.

  The first dice piece 31 is obtained by integrating the two first dice pieces 11 and the second dice piece 13 positioned therebetween in the first embodiment described above. Other points are the same as in the first embodiment.

  The flat enameled wire coating die 30 according to the second embodiment is less flexible than the first embodiment in that the length in the thickness direction cannot be changed, but the first is that the number of assembly points is small. The embodiment is superior.

  Similar to the flat enameled wire coating die 20 according to the modification of the first embodiment, a plurality of protrusions can be provided on the surface on which the die hole is formed. In this case, it can be provided on the first die piece 31 and / or the second die piece 12, and the first die piece 31 can be provided on the flat portion (corresponding to the second die piece 13). preferable.

(Third embodiment)
FIG. 5 is a cross-sectional view of a flat enameled wire coating die (a state in which a flat conductor wire is inserted through a die hole) according to a third embodiment of the present invention.

  The flat enameled wire coating die 40 according to the third embodiment of the present invention includes two first die pieces 41 having corner R portions facing the corners of the flat conductor wire 1, and the flat conductor wire 1. Two second die pieces 13 having a flat portion facing the flat portion, and the first die piece 41 and the second die piece 13 are assembled to be detachable from each other, and the flat conductor wire 1 is inserted. A die hole is formed.

  The first die piece 41 is obtained by integrating the two first die pieces 11 in the first embodiment and the second die piece 12 positioned therebetween. Other points are the same as in the first embodiment.

  The flat-angle enameled wire coating die 40 according to the third embodiment is inferior to the first embodiment in that the length in the width direction cannot be changed, but the first is that the number of assembly points is small. The embodiment is superior.

  Similar to the flat enameled wire coating die 20 according to the modification of the first embodiment, a plurality of protrusions can be provided on the surface on which the die hole is formed. In this case, the first die piece 41 and / or the second die piece 13 can be provided, and the first die piece 41 can be provided on a flat portion (corresponding to the second die piece 12). preferable.

[Manufacturing method of flat enameled wire]
A method for producing a rectangular enameled wire according to an embodiment of the present invention includes a step of applying an insulating paint around a rectangular conductor wire using the above-described flat enameled wire coating die according to an embodiment of the present invention. And A flat enameled wire can be manufactured by a method similar to the conventional method except that the above-described flat enameled wire coating die is used according to the embodiment of the present invention.

[Effect of the embodiment of the present invention]
According to the embodiment of the present invention, it is possible to provide a flat enameled wire coating die having the features of both solid dies and assembled dies, and a method of manufacturing a flat enameled wire using the die. Specifically, the insulating paint can be evenly applied to the periphery of the flat conductor wire, and by combining the first die piece and the second die piece, it is possible to deal with flat conductor wires of various sizes. In addition, as compared with solid dies, it is possible to reduce the manufacturing cost of dies for dealing with flat conductor wires having various shapes, and it is also possible to cope with short delivery times. Further, since disassembly and assembly are easy, it is possible to replace the die without cutting the flat conductor wire. Furthermore, the coating amount of paint can be partially adjusted by providing protrusions on the first die piece and / or the second die piece.

  In addition, this invention is not limited to the said embodiment, A various deformation | transformation implementation is possible.

1: Flat conductor wire 10, 20, 30, 40: Die (Coating die for flat enameled wire)
11, 31, 41: first die piece, 12, 13: second die piece 11a: dovetail groove, 12a: ant tenon, 21: protrusion

Claims (6)

A coating die for applying insulating paint around a flat conductor wire,
Two or more first dice pieces having a corner R portion facing a corner portion of the flat conductor wire; and two or more second dice pieces having a flat portion facing the flat portion of the flat conductor wire; With
The rectangular enameled wire coating die, wherein the first die piece and the second die piece are assembled so as to be detachable from each other to form a die hole through which the flat conductor wire is inserted.   The flat enameled wire coating die according to claim 1, comprising four first die pieces and four second die pieces.   The flat enameled wire coating die according to claim 1, comprising two of the first die pieces and two of the second die pieces.   The flat enameled wire coating die according to any one of claims 1 to 3, wherein the second die piece has a plurality of protrusions provided on a surface forming the die hole.   The flat enameled wire coating die according to any one of claims 1 to 4, wherein the first die piece has a plurality of protrusions provided on a surface forming the die hole. The manufacturing method of a flat enameled wire including the process of apply | coating an insulating coating around a rectangular conductor wire using the coating die for flat enameled wires of any one of Claims 1-5.

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