JP3390746B2 - Square wire manufacturing apparatus and manufacturing method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a square for processing and forming a small-diameter square wire used in electric equipment and electronic equipment such as a thin motor, a thin transformer, and a voice coil for a high-performance speaker from a round conductor wire. The present invention relates to a wire manufacturing apparatus and a wire manufacturing method.

[0002]

2. Description of the Related Art In thin motors and voice coils,
When a conventional round-shaped (circular cross-section) conductor wire is coiled, there is a gap between the conductor wires, and the intersections of the conductor wires bulge outwards, so that lighter, thinner, shorter, and smaller sizes are required. It has become a problem for the dimensional accuracy of electronic device parts. As described above, the coil conductor is required to have improved characteristics and miniaturization in all electronic components that receive a mechanical vibration or rotation due to interaction with a magnetic field generated by passing a current through the conductor in a magnetic field.

In order to solve such a problem, it has been earnestly desired to manufacture a thin and long square wire. In the present specification, “square line” also includes “square line”. As a conventional method for manufacturing a square wire, for example, a method of compressing a round conductor wire into a rectangular cross section with a rolling roller, a method of compressing a round conductor wire through a die having a square hole, and the like are known. .

However, in the above-mentioned conventional method, a radius (curved surface) is always generated at the corner portion of the square wire, and when the conductor wire is coiled, a gap (round conductor wire) is still formed between the conductor wires. Smaller than the case of).

For example, for diamond dies, 0.2 mm square is currently the smallest square die, and at least 0.0 mm.
A radius of 3 mm or more is generated. Further, there is a problem that the required accuracy cannot be obtained with a square die smaller than 0.4 mm square using other materials (such as super steel).

Further, in the roller system, that is, in the method of compressing the conductive wire only by the rolling roller, the minimum diameter is 0.15 mm, and in that case, the rounded corners are always generated, the rounded shape is not constant, and the linear shape is further linear. There is a problem that the deformation of the wire and the nonuniformity of the wire diameter are likely to occur.

Further, when a square wire is to be obtained from one thin plate-shaped conductive metal, the length of the thin plate material as the base material is limited, and the length of the round conductor wire cannot be opposed. There was a concern that the manufacturing equipment would be complicated and costly. Further, there is a concern that the short length of the base material complicates the work of exchanging the thin plate material and hinders continuous automatic operation of the automatic winding machine or the like.

[0008]

SUMMARY OF THE INVENTION In view of the above points, the present invention is to be used for a coil or the like, and a conductor wire having a square or square cross section is continuous and has a relatively simple structure with high accuracy. An object of the present invention is to provide a square wire manufacturing apparatus and manufacturing method that can be manufactured at low cost.

[0009]

In order to achieve the above object, a square wire manufacturing apparatus according to a first aspect of the present invention comprises at least a pair of rolling rollers for rolling a round conductor wire into a flat conductor wire, and the flat conductor wire. and a pair of slits rollers to obtain a square wire by shearing the widthwise center portion in the longitudinal direction, the pair of Surittoro
One of the roller rollers protrudes from the outer peripheral surface
Has a roller blade that has the same width as the square wire.
It is characterized by being formed to the same thickness . With the above configuration, the round conductor wire is processed into a flat conductor wire by the rolling roller, the flat center portion of the flat conductor wire is sheared by the slit roller, and the square wire is formed avoiding the rounded portions on both sides of the flat conductor wire. To be done. A long continuous square wire is formed by using a long continuous round conductive wire and a rotating rolling roller and slit roller.

A square wire manufacturing apparatus according to a second aspect is the square wire manufacturing apparatus according to the first aspect, characterized in that the rolling roller and the slit roller are continuously arranged in a wire feeding direction. With the above configuration, the formation of the flat conductive wire from the round conductive wire and the formation of the square wire from the flat conductive wire are continuously and efficiently performed.

A square wire manufacturing apparatus according to a third aspect is the square wire manufacturing apparatus according to the first or second aspect, wherein the gap between the pair of rolling rollers is set to have the same dimension as one width of the square wire. It is characterized by being adjustable. With the above configuration, one width (vertical width) of the square wire is determined by processing by the rolling roller, and one width is uniformly stabilized over the entire length of the conductor wire.

A square wire manufacturing apparatus according to a fourth aspect is the square wire manufacturing apparatus according to any one of the first to third aspects, wherein the slit roller is a thin plate having the same thickness as the other width of the square wire. comprising a Jo of said roller blades, forming the slitting roller
The roller blade is sandwiched between a pair of divided rollers . With the above configuration, the roller blade shears the flat conductor wire in the longitudinal direction by the rotation of the slit roller, that is, the flat conductor wire is sheared by the edges on both sides in the plate thickness direction of the roller blade, and the flat blade has the same width as the roller blade. A square line is formed.

A square wire manufacturing apparatus according to a fifth aspect is the square wire manufacturing apparatus according to any one of the first to fourth aspects, in which the apparatus for supplying the round conductive wire, the round conductive wire and the flat mold are provided. It is characterized by comprising a device for supplying a lubricant to the conductive wire, a device for winding the square wire, and a device for recovering the remaining portion of the flat wire which is sheared from the square wire. With the above configuration, the round conductor is continuously and smoothly supplied to the rolling roller, the rolling by the rolling roller and the shearing by the slit roller are smoothly and accurately performed by the lubricant, and the processed square wire is wound in an orderly manner. The lead wire is accurately supplied to the roller blade and the concave groove of the slit roller by the tension at the time of winding, and the unnecessary portion at the time of shearing is recovered without interfering with the square wire.

According to a sixth aspect of the present invention, in the method for manufacturing a square wire, the round conductive wire is rolled once or plural times by a pair of rolling rollers, or once or plural times by plural pairs of rolling rollers to obtain a flat conductive wire. Is formed, and the central portion in the width direction of the flat conductive wire is sheared in the longitudinal direction by a pair of slit rollers to obtain a square wire. With the above configuration, the round conductor wire is processed into a flat conductor wire by the rolling roller, the flat center portion of the flat conductor wire is sheared by the slit roller, and the square wire is formed avoiding the rounded portions on both sides of the flat conductor wire. To be done. A long continuous square wire is formed by using a long continuous round conductive wire and a rotating rolling roller and slit roller. And
By rolling the round conductor wire a plurality of times with a pair of rolling rollers or a plurality of pairs of rolling rollers, an extremely thin flat conductor wire can be obtained, and an extremely thin square wire can be formed. By obtaining an extremely thin flat conductive wire from a thick round conductive wire, the central portion in the width direction of the flat conductive wire is accurately flattened, and the dimensional accuracy of the square wire is improved.

A method for manufacturing a square wire according to a seventh aspect is the method for manufacturing a square wire according to the sixth aspect, wherein the gap between the pair of rolling rollers and the thickness of the roller blade of the slit roller are set to be the same. It is characterized by doing and obtaining a square line. With the above structure, a thin square wire having one width and the other width that are the same is formed.

The method for manufacturing a square wire according to claim 8 is the method for manufacturing a square wire according to claim 7, wherein the gap between the pair of rolling rollers and the thickness of the roller blade are 1.50 to 50.
Set within the range of 0.020 mm and the wire diameter is 1.50 × 1.
It is characterized in that the square wire in the range of 50 mm to 0.020 × 0.020 mm is obtained. With the above configuration, it is possible to obtain a wide variety of square wires having a diameter of 1.50 square and a wide square wire of 0.020 square.

A method of manufacturing a square wire according to claim 9 is the method of manufacturing a square wire according to any one of claims 6 to 8, wherein the round conductor wire not having an insulating film treatment is used, In addition, the insulating treatment of the square wire or the square wire is performed after the formation of the square wire or the square wire. With the above configuration, the drawback that the insulating film presses the conductor portion (conductor) during rolling to cause distortion in the conductor portion (conductor) is solved,
The bending deformation of the square wire or the square wire and the deterioration of the dimensional accuracy are prevented.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. 1 to 4 show one embodiment of a square wire manufacturing apparatus and manufacturing method according to the present invention.

This apparatus for manufacturing a square wire comprises a pair of metal rolling rollers 6 and 6 for rolling a round conductor wire (metal conductor wire) 1 having a circular cross section into a flat shape, and a flat conductor wire 2 rolled into a flat shape. And a pair of metal slit rollers (slitter) 7 and 8 that shear-form a square wire (including a square wire) 3.

The pair of rolling rollers 6 and 6 are vertically symmetrically formed and arranged, and are rotatably supported by the apparatus main body 12 by the shaft portion 9 as shown in FIG. 2 (rolling apparatus 20). Gears (not shown) are fixed to the pair of shaft portions 9, 9, and the gears are meshed with each other and are connected to a driving means (not shown) such as a motor.

A frame 10 for supporting one shaft portion 9 and a frame 11 for supporting the other shaft portion 9 of the apparatus body 12.
Are joined together by a wedge member 13, both frames 10 and 11 are connected to each other, and the wedge member 13 is connected to the male screw member 1 with the frames 10 and 11 disconnected.
It is possible to move back and forth by turning 4 Reference numeral 27 is a female screw member integrated with the wedge member 13. As a result, the distance between the two shaft portions 9, 9, that is, the distance between the pair of rolling rollers 6, 6 can be adjusted accurately. The turning operation of the male screw member 14 can be performed automatically or manually. The gap between the pair of rolling rollers 6 and 6 can be adjusted from 0 mm to, for example, about 2 mm.

In FIG. 1, the round conductor 1 is, for example, a type 1 polyurethane copper wire (conductor diameter 0.1 to 1.5 mm) shown in Table 2-1 of Appendix 6 of JIS C3202-1994,
Similarly, type 2 polyurethane copper wire (conductor diameter 0.0
20 to 1.0 mm), or the same size as the type 3 polyurethane copper wire (conductor diameter 0.020 to 0.60 mm) shown in Table 2-3, and a conductor wire that has not been subjected to surface treatment such as insulation is used. be able to. The insulating film is formed after the square wire 3 is formed.

When the round conductor wire 1 having the same size as that of the above-mentioned type 1 polyurethane copper wire is used, the gap between the pair of rolling rollers 6, 6 is set to 1.5 mm or less at the maximum, and the type 2 or 3 type is used.
When the round conductor 1 having the same dimensions as the seed polyurethane copper wire is used, the gap between the pair of rolling rollers 6 and 6 is at least 0.
It is set to 02 mm or less. That is, the round conductor wire 1 is rolled at least in the range of 0.02 to 1.5 mm in thickness, and sheared by a pair of slit rollers 7 and 8 described later to form a square wire 3.
Can be manufactured. In the case of the square wire 3, the wire diameter can be set in the range of 0.02 × 0.02 mm to 1.5 × 1.5 mm on the basis of the above.

In FIG. 1, the rolling rollers 6 and 6 and the slit rollers 7 and 8 are arranged continuously in the wire feeding direction, that is, side by side in the wire feeding direction. Rolling rollers 6,6
And the slit rollers 7 and 8 have the same direction and rotation direction. The flat conductor wire 2 rolled flat by the rolling rollers 6 and 6 has rounded curved surfaces 2a on both sides in the width direction as shown in an enlarged view in a circle of FIG. The central portion of the flat conductor wire 2 is sheared into a square or square shape by a pair of slit rollers 7 and 8, and the rounded portions 4 on both sides in the width direction are separated on both sides of the square wire 3 and discharged.

In FIG. 1, the upper slit roller 7 has a roller blade 15 protruding on the outer peripheral portion thereof, and the lower slit roller 8 has a groove 16 on the outer peripheral portion corresponding to the roller blade 15. There is. As shown in FIG. 3, an enlarged cross-sectional view of part A in FIG.
The roller blade 15 is in the thickness direction of the slit roller 7 (axial direction).
It is mounted so as to be sandwiched in the middle part.

The roller blade 15 is made of an extremely thin hard metal material and is formed into a single disc or ring shape, and a pair of left and right split rollers 7 ₁ , 7 _{2 in the} axial direction which form the main body of the slit roller 7.
It is pinched and fixed by. The pair of split rollers 7 ₁ and 7 ₂ are joined by a fixing means (not shown) such as a bolt, and at that time,
A bolt or a positioning pin (not shown) is inserted into a bolt insertion hole (not shown) of the roller blade 15 so that the roller blade 1
5 is clamped and fixed between the split rollers 7 ₁ and 7 ₂ . The edge portions 15a (FIG. 3) on both sides of the tip of the roller blade 15 have a right-angled shape without rounding. Roller blade 1
The thickness T of 5 is equal to the width dimension L ₂ of the square wire 3 to be processed. By exchanging the roller blades 15 according to the size of the square wire 3, the square wire 3 of various sizes can be easily obtained.

The concave groove 16 of the lower slit roller 8 is annularly continuous in the roller circumferential direction, and the width of the concave groove 16 is set to be equal to or slightly larger than the plate thickness T of the roller blade 15. The left and right edges 16a (FIG. 3) of the groove 16 are formed at right angles, and act as a shearing blade together with the edge portion 15a of the roller blade 15. The sheared square wire 3 completely enters the groove 16.

The groove bottom is formed by a disc-shaped or annular metal spacer 17 (FIG. 3). Similar to the roller blade 15, the spacer 17 is pinched and fixed by a pair of left and right divided rollers 8 ₁ and 8 ₂ which are main bodies.

As another example, the width of the spacer 17 is set to the square line 3
Was slightly smaller than the width L ₂ of, and the outer diameter of the spacer 17 is set to a diameter larger than the slit rollers 8, scan page <br/> support 17 a pair of divided rollers _81, 82 between the It can also be rotatably held by. The inner width of the groove 16 is defined by sandwiching another wide spacer (not shown) between the split rollers 8 ₁ and 8 ₂ . In the case of this example, the square wire 3 in the concave groove 16 is automatically pushed out by the rotation of the spacer 17, so that the square wire 3 is sent out smoothly and surely.

By exchanging the spacer 17 together with the roller blade 15 according to the size of the square wire 3 to be processed, the square wire 3 of various sizes can be easily obtained. To obtain a rectangular wire, that is, a conductor wire 3 having the same vertical and horizontal widths, the round conductor wire 1 is rolled to a thickness equal to the width T of the roller blade 15 of the slit roller 7 by the rolling rollers 6 and 6 in the previous step. To form the flat conductor wire 2. The flat electric wire 2 is connected to a pair of slit rollers 7,
The square wire 3 can be easily and accurately formed by shearing at 8.

In the case of obtaining a square wire which is not a square, that is, a conductive wire 3 having different vertical and horizontal widths, the vertical width L ₁ of the conductive wire 3 (FIG. 3)
That is, the thickness is adjusted by the rolling rollers 6 and 6, and the width (plate thickness) T of the roller blade 15 of the slit roller 7 defines the lateral width L ₂ of the conducting wire 3. At this time, the pair of slit rollers 7,
The gap between 8 is adjusted to be equal to the thickness of the flat conductor wire 2.

The square wire 3 sheared from the flat conductor wire 2 as shown in FIG. 1 is fed tangentially forward from the concave groove 16 of the lower slit roller 8. By using the round conductor 1 before rolling that does not have an insulating film, distortion of the conductor 2 during rolling due to the insulating film does not occur, and the square wire 3 with an accurate dimension is used.
Can be obtained.

The remaining portions 4 and 4 on both sides obtained by shearing the square wire 3 from the flat conductive wire 2 are along the both side surfaces of the roller blade 15 in the gap 18 (FIG. 3) between the upper and lower slit rollers 7 and 8. While slightly opening to the outside, it is extended slightly obliquely upward and forward as shown in FIG. As shown in FIG. 3, unnecessary portions 4 and 4 on both sides are located at least above the square wire 3. In this way, the unnecessary portions 4 and 4 on both sides are discharged without interfering with the square wire 3, whereby deformation and damage of the square wire 3 are prevented.

In FIG. 1, a round conductor 1 is unwound from an electric wire reel (not shown) and supplied between a pair of rolling rollers 6 and 6. The rectangular wire 3 formed by the pair of slit rollers 7 and 8 is directly wound around a reel or a coil by a winding machine (not shown). In FIG. 1, the conducting wire 5 (round conducting wire 1, flat conducting wire 2 and quadrangular wire 3) is kept in a straight line without sagging, whereby the roller blades 15 of the rolling rollers 6 and 6 to the slit rollers 7 and 8 are kept. The flat conductor wire 2 is accurately supplied to the position of the groove 16 without displacement. The unnecessary portions 4 and 4 on both sides after shearing are collected by a collecting device (not shown).

A lubricant is supplied from a lubricant supply device (not shown) between the pair of rolling rollers 6 and 6 and between the pair of slit rollers 7 and 8 during rotation. The lubricant prevents unnecessary friction between the conductive wire 1 and the rolling rollers 6 and 6, and between the conductive wires 2 and 3 and the slit rollers 7 and 8, prevents breakage of the conductive wire and improves processing accuracy.

Although an example using a pair of rolling rollers 6 and 6 is shown in FIG. 1, a plurality of pairs of rolling rollers 6 and 6 are used.
It is also possible to arrange 6 continuously in the wire feeding direction and gradually (stepwise) thinly roll the round wire 1.

Further, the rolling rollers 6 and 6 and the slit rollers 7 and 8 are separated in a separate process, and a pair of rolling rollers 6 and 6 are formed.
It is also possible to roll the round conductor 1 multiple times. When the rolling rollers 6 and 6 and the slit rollers 7 and 8 are separated, a winder (not shown) for winding the rolled flat conductor wire 2 is required, and the flat conductor wire 2 is removed from the winder. It will be supplied between the slit rollers 7 and 8.

In any case, depending on the size of the square wire 3, the gap between the rolling rollers 6 and 6 or the rolling rollers 6 and 6.
The rotation speed of 6 and the gap between the slit rollers 7 and 8 and the rotation speed of the slit rollers 7 and 8 are appropriately controlled.

The gap between the pair of slit rollers 7 and 8 is
As in the case of the rolling rollers 6 and 6, as shown in FIG.
As described in 5), it is finely adjusted by the method using the wedge member 19 and the screw members 14 and 27. The slit rollers 7 and 8 are supported by the shafts 24 on the divided frames 21 and 22 of the apparatus main body 23, and the divided frames 21 and 22 are connected to each other via a wedge member 19 so as to be joined to each other. Gears (not shown) are fixed to the shaft portions 24, and the gears are rotated by driving means (not shown) in a meshed state.

It should be noted that the apparatus shown in FIG. 1 is arranged in a plurality of lines, or a plurality of round conductors 1 are rolled by a pair of rolling rollers 6 and 6, and a plurality of roller blades are provided to a pair of slit rollers 7 and 8. 15 and a plurality of concave grooves 16 are provided to face each other,
It is also possible to simultaneously process a plurality of flat conductor wires 2 into square wires 3. Further, the pair of upper and lower rollers 6, 6, shown in FIG.
It is also possible to position the shaft portions 9 and 24 (7, 8) of FIG. is there.

The method of manufacturing a square wire using the square wire manufacturing apparatus shown in FIG. 1 will be described below in detail for the case of a square wire. First, a roller blade 15 having a thickness T having the same dimension as the width of the square wire 3 to be machined (L ₁ = L ₂ with the same four sides) is selected and attached to the slit roller 7. Further, the gap size between the pair of rolling rollers 6 and 6 and the gap size between the pair of slit rollers 7 and 8 are adjusted to be the same as the width of the square wire 3 to be processed.

The round conductor 1 to be used has a diameter larger than at least the width of the square wire 3 to be processed and has no insulating film. If the round conductor 1 has an insulating film,
Since the metal conductor wire is pressed through the insulation film when rolled by the rolling rollers 6 and 6, the metal conductor wire is easily distorted and bent, and the size of the metal conductor wire is reduced by the thickness of the insulation film. Then, there arises a problem that the dimensional accuracy of the metal conductor is lowered, but these problems are solved by using the round conductor 1 having no insulating film.

The insulating film is formed by forming the square wire 3 and then performing pretreatment such as oil removal and electrodeposition. After that, a self-bonding film or the like is further formed. The material of the round conductor 1 is not limited to copper, and various conductive metals such as aluminum and gold can be used. Especially since copper is rich in ductility,
The compression by the rolling rollers 6 and 6 can be performed easily and reliably.

By passing the round conductor 1 between the pair of rotating rolling rollers 6 and 6, the round conductor 1 is compressed and deformed into the flat conductor 2, and the flat conductor 2 is immediately rotated in a pair. It is sheared in the longitudinal direction by the slit rollers 7 and 8 to form the square wire 3 from the upper and lower parallel portions of the center of the flat conductive wire 2,
Rounded portions 2a on both sides in the width direction of the flat conductor wire 2
Is automatically discharged as the unnecessary portion 4.

Here, the conductor wire 2 is straightly taut so that the tip 15b (FIG. 3) of the roller blade 15 of one of the slit rollers 7 presses the central parallel portion of the flat conductor wire 2 in the vertical direction. Supply between the slit rollers 7 and 8. When the tip end 15b of the roller blade 15 penetrates from one surface of the flat conductive wire 2 to the other surface, the square wire 3 and the rounded portions 4 on both sides are separated. The square wire 3 enters into the circumferential groove 16 of the other slit roller 8. At this time, the tip 15b of the roller blade 15 can also slightly enter the concave groove 16.

At the time of rolling and shearing, a lubricant is supplied to the wires 1 and 2 to reduce unnecessary friction. The round conductor 1 is supplied from a reel (not shown) to the rolling rollers 6 and 6, and the square wire 3 is wound up in a coil in an orderly manner by a winder (not shown). The round conductor 1 wound around the reel has a total length of 30.
It can reach more than Km. For example, it is possible to obtain a markedly continuous square wire 3 as compared with the case where a square wire is manufactured using a sheet-shaped thin sheet metal (total length is about 1 km). .

With the above-described manufacturing apparatus and manufacturing method for a square wire, it is possible to continuously manufacture a square wire 3 that has been impossible to manufacture, has no corners, or has very few corners. Further, it becomes possible to manufacture the square wire 3 of any size from the round wire (round conductor wire) 1 which is one busbar material. Therefore, it is possible to rationalize, shorten, and reduce raw materials, machinery, processes, labor costs, and the like, and it is possible to manufacture a low-cost square wire 3 that can be expected to significantly reduce costs and can compete with round wires.

Further, it is possible to manufacture the square wire 3 with high accuracy, and the following advantages are produced as compared with the round wire. Compared to the round wire, the square wire 3 has a cross-sectional area of about 1.27 times, which means that a current of 1.27 times can be simply considered. When the square wire 3 having the same cross-sectional area as the round wire is used, the same coil as the round wire can be manufactured with a coil length of about 86% as compared with the round wire. When the square wire 3 is used, the bulging of the wound wire outer shape (intersection portion), which cannot be avoided with the round wire, does not occur, so that the wound wire outer shape with good dimensional accuracy can be obtained. From the viewpoint of the skin effect, the square wire 3 is far more advantageous than the rectangular wire, so that a coil can be produced. Compared to the vertical winding of a rectangular wire (multi-layer winding), the square wire 3 can be easily wound in multiple layers like a round wire.

Further, a rectangular wire (a flat rectangular wire having different vertical and horizontal widths) is produced by the above-described apparatus and method for manufacturing a square wire.
In the case of forming a wire, it is possible to manufacture a wire shape / wire diameter size having a much higher accuracy than ever before. Further, since the insulating film and the self-bonding film are formed on the surface of the square wire 3 in the post-process, the performance, uniformity, accuracy, etc. are superior to the conventional products.

[0050]

As described above, according to the first aspect of the invention, the round conductor wire is processed into the flat conductor wire by the rolling roller, and the flat central portion of the flat conductor wire is sheared by the slit roller. Since a long continuous square wire can be obtained with the device having the configuration, the cost of the device is reduced, the number of interruptions in the production is reduced, the productivity is improved, and the production cost of the square wire is reduced. At the same time, it is possible to form a coil having a long wire length. Further, by avoiding the rounded portions on both sides of the flat conductor wire, a square wire with good dimensional accuracy can be obtained.

According to the second aspect of the present invention, it is possible to continuously and efficiently form the flat conductive wire from the round conductive wire and the square wire from the flat conductive wire. And the flat conductor wire is prevented from being oxidized and the dimensional accuracy of the square wire is improved.

According to the third aspect of the invention, one width (longitudinal width) of the square wire is determined by processing by the rolling roller, and one width is uniformly stabilized over the entire length of the conductor wire. Dimensional accuracy is improved.

According to the fourth aspect of the present invention, since the square blade having the same width as the roller blade can be formed by the thin plate-shaped roller blade, the plate thickness of the roller blade can be made extremely thin and the plate thickness accuracy can be improved. By raising it (these are relatively easy), it is possible to continuously obtain a very fine square wire with good dimensional accuracy.

According to the invention described in claim 5, the round conductor is continuously and smoothly supplied to the rolling roller, and the rolling by the rolling roller and the shearing by the slit roller are smoothly and accurately performed by the lubricant. Therefore, it is possible to continuously obtain a square wire with high dimensional accuracy. Further, the processed square wire can be wound up in an orderly manner, and unnecessary portions at the time of shearing can be collected without interfering with the square wire.

According to the sixth aspect of the present invention, by rolling the round conductor wire a plurality of times with a pair of rolling rollers or a plurality of pairs of rolling rollers, an extremely thin flat conductor wire can be obtained, and an extremely thin square wire is obtained. Lines can be formed. Further, by obtaining an extremely thin flat conductor from the thick round conductor, the center portion in the width direction of the flat conductor is accurately flattened, and the dimensional accuracy of the square wire is improved. Needless to say, the same effects as the effects of the first aspect of the invention are achieved. According to the invention described in claim 7, it is possible to continuously and accurately form an extremely thin square wire having the same width on one side and the width on the other side at low cost.

According to the invention of claim 8, the wire diameter is 1.
It is possible to obtain a wide variety of square wire diameters from a thick square wire of 50 squares to an extremely thin square wire of 0.020 squares.
According to the invention as set forth in claim 9, the disadvantage that the insulating film presses the conductor portion (conductor wire) at the time of rolling to cause distortion in the conductor portion (conductor wire) is solved, and bending deformation of a square wire or a square wire or Deterioration of dimensional accuracy is prevented, and dimensional accuracy of square wire or square wire is improved.

[Brief description of drawings]

FIG. 1 is a schematic perspective view (an enlarged view in a circle) showing an embodiment of a square wire manufacturing apparatus according to the present invention.

FIG. 2 is a side view showing an embodiment of a rolling apparatus in a square wire manufacturing apparatus.

FIG. 3 is a vertical cross-sectional view showing a portion A (square wire cut state) of FIG. 1;

FIG. 4 is a side view showing an embodiment of a cutting device in a square wire manufacturing apparatus.

[Explanation of symbols]

1 Round type conductor 2 Flat type conductor 3 Square wire (square wire) 6 Rolling roller 7, 8 Slit roller 15 Roller blade T Roller blade thickness L ₁ , L ₂ Square wire width

Claims (9)

(57) [Claims] 1. At least a pair of rolling rollers for rolling a round conductor wire into a flat conductor wire, and a pair of slit rollers for shearing a central portion in a width direction of the flat conductor wire in a longitudinal direction to obtain a square wire , The slip of one of the pair of slit rollers
The roller has a roller blade protruding from the outer peripheral surface,
An apparatus for manufacturing a square wire, wherein the ruler blade is formed to have the same thickness as the width of the square wire. 2. The apparatus for manufacturing a square wire according to claim 1, wherein the rolling roller and the slit roller are continuously arranged in a wire feeding direction. 3. The apparatus for manufacturing a square wire according to claim 1, wherein the gap between the pair of rolling rollers can be adjusted to have the same size as one width of the square wire. Wherein said slitting roller is provided with a thin plate of the roller blades on the other width and the same thickness of the square wire,該Su
The roller blade is provided between a pair of split rollers forming a Lit roller.
The square wire manufacturing apparatus according to any one of claims 1 to 3, wherein the square wire is sandwiched . 5. A device for supplying the round conductive wire, a device for supplying a lubricant to the round conductive wire and the flat conductive wire, a device for winding the square wire, and the square wire from the flat conductive wire. The device for recovering the remaining portion obtained by shearing of the square wire according to any one of claims 1 to 4, further comprising: 6. A flat conductor wire is formed by rolling a round conductor wire once or a plurality of times with a pair of rolling rollers or once or a plurality of times with a plurality of pairs of rolling rollers, and the width of the flat conductor wire is formed. A method for manufacturing a square wire, wherein a square wire is obtained by shearing the central part in the direction with a pair of slit rollers in the longitudinal direction. 7. The method of manufacturing a square wire according to claim 6, wherein the square wire is obtained by setting the gap between the pair of rolling rollers and the thickness of the roller blade of the slit roller to be the same. . 8. The wire diameter is 1.50 × 1.50 mm to 0.020 × when the gap between the pair of rolling rollers and the thickness of the roller blade are set in the range of 1.50 to 0.020 mm.
The method for manufacturing a square wire according to claim 7, wherein the square wire having a range of 0.020 mm is obtained. 9. The insulating wire-treated round-shaped conductor is used, and the square wire or the true square wire is insulated after the formation of the square wire or the true square wire. The manufacturing method of the square wire in any one of to 8.