JP2008030059A - Method and apparatus for manufacturing flat square wire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for manufacturing a flat square wire, wherein the dimensional accuracy of thickness and width can be improved for a long time. <P>SOLUTION: In the method for manufacturing the flat square wire, the flat square wire C having the target thickness dimension and the target width dimension is manufactured by successively feeding a lead wire D having a circular cross section between two or more rolls. The final thickness dimension of the flat square wire C is measured on the downstream side of the final rolls 2 in the most downstream position and the gap dimension X<SB>2</SB>between the final rolls 2 is adjusted by comparing the size of the final thickness dimension with the target thickness dimension. Furthermore, the final width dimension of the flat square wire is measured on the downstream side of the final rolls 2 and the gap dimension X<SB>1</SB>of the rolls of the upstream rolls 1 which are on the next upstream side before the final rolls 2 is adjusted by comparing the size of the final width dimension and the target width dimension. The flat square wire C having the target thickness dimension and the target width dimension is manufactured by manufacturing an intermediate wire M having the optimum cross-sectional area with the upstream rolls 1 and feeding it to the final rolls 2. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a flat wire manufacturing method and a flat wire manufacturing apparatus.

There is a manufacturing apparatus for producing a rectangular wire having a rectangular cross section by feeding a conductive wire having a circular cross section between a pair of rolling rolls and rolling (see, for example, Patent Document 1). And by the processing heat generated when the conducting wire is rolled (plastic deformation), the frictional heat produced between the rolling roll and the conducting wire, etc., the rolling roll is heated and thermally expanded, or the rolling roll surface is worn, There was a problem that the roll interval fluctuated and the thickness and width of the manufactured rectangular wire became non-uniform. Furthermore, the thickness dimension and width dimension of the flat wire are not uniform even when the friction coefficient on the surface of the rolling roll is changed. For this reason, conventionally, measures have been taken such as cooling the rolling roll or adjusting the roll interval by feeding back the thickness dimension and width dimension data of the manufactured rectangular wire.
JP 2004-122165 A

Further, in the case of manufacturing a rectangular wire (a rolling ratio is large) by rolling the conducting wire greatly, two or more pairs of rolling rolls are installed. For example, as shown in FIG. The intermediate wire M is manufactured by sending it to the rolling rolls 41 and 41, and the rectangular wire C is manufactured by sending the intermediate wire M to the second rolling rolls 42 and 42 and rolling it.
Also in this case, since the first rolling rolls 41 and 41 and the second rolling rolls 42 and 42 are thermally expanded in the same manner as described above, the thickness dimension and width dimension of the intermediate wire M and the rectangular wire C are not uniform. In order to solve this problem, conventionally, the width dimension of the intermediate wire M measured by the width measuring device 43 is fed back to the first rolling rolls 41 and 41 via the roll interval adjusting means 45 to adjust the roll interval. Further, the width dimension of the flat wire C measured by the width measuring device 44 is fed back to the second rolling rolls 42 and 42 via the roll interval adjusting means 46 to adjust the roll interval.

  However, in the rectangular wire manufacturing apparatus (method) shown in FIG. 5, when the roll interval of the first rolling rolls 41 and 41 is changed, the cross-sectional area of the intermediate wire M changes, and this is the second rolling rolls 42 and 42. Since the thickness dimension and the width dimension of the rectangular wire C to be manufactured are affected, it cannot be manufactured with high accuracy.

  Then, an object of this invention is to provide the manufacturing method of a flat wire, and the manufacturing apparatus of a flat wire which can improve the dimensional accuracy of thickness dimension and width dimension over a long time.

In order to achieve the above object, a method of manufacturing a rectangular wire according to the present invention is a method of manufacturing a rectangular wire having a target thickness dimension and a target width dimension by sequentially feeding a conducting wire having a circular cross section to two or more rolls. In the manufacturing method, the final thickness dimension of the rectangular wire is measured downstream of the final roll at the most downstream position, and the final thickness dimension is compared with the target thickness dimension to compare the final roll dimension. One of the final rolls is adjusted by measuring the final width dimension of the rectangular wire downstream of the final roll and comparing the final width dimension with the target width dimension. By adjusting the roll interval dimension of the upstream upstream roll, an intermediate wire having an optimum cross-sectional area is produced by the upstream roll, and sent to the final roll to produce a rectangular wire having the target thickness dimension and target width dimension. Is the method.
Further, it is desirable that the upstream roll and the final roll are rolled while being cooled or heated.

An apparatus for producing a rectangular wire according to the present invention includes an upstream roll for producing an intermediate wire by rolling a conductor wire having a circular cross section as it is or after passing through another roll, and a flat wire by rolling the intermediate wire. A final roll for manufacturing the wire, and a thickness measuring device for measuring the final thickness dimension of the flat wire downstream of the final roll; and the final of the flat wire downstream of the final roll. A width measuring device for measuring the width dimension, and comparing the final width dimension obtained from the width measuring instrument with the target width dimension of the flat wire, the intermediate wire is a rectangular wire of the target width dimension. First roll control means for adjusting the roll interval dimension of the upstream roll so as to obtain an optimum cross-sectional area for obtaining the above, the final thickness dimension obtained from the thickness measuring instrument, and the target thickness dimension of the rectangular wire The rectangular wire is the target thickness dimension And a second roll control means for adjusting the roll clearance dimensions of sea urchin the final roll, those equipped.
Moreover, it is preferable to attach a cooling device or a heating device to the upstream roll and the final roll.

The present invention has the following remarkable effects.
According to the method for manufacturing a rectangular wire and the apparatus for manufacturing a rectangular wire according to the present invention, the final width dimension and the final thickness dimension of the rectangular wire as a finished product are fed back to the upstream roll and the final roll to roll dimension. Can be adjusted (controlled), the dimensional accuracy can be improved, and a uniform rectangular wire can be manufactured in the longitudinal direction.
In other words, the thickness of the rectangular wire can be manufactured to the target width by feeding back the final thickness to the final roll that determines the thickness of the flat wire and adjusting (controlling) the roll spacing. . Also, by feeding back the final width dimension to the upstream roll and adjusting (controlling) the roll gap dimension, the cross-sectional area of the intermediate wire supplied to the final roll is adjusted (controlled) to a rectangular wire. Can be manufactured to a target width dimension. By doing in this way, even if a roll space | interval dimension is fluctuate | varied by the thermal expansion of each roll or each roll surface abrasion, or the friction coefficient of a roll surface changes, a highly accurate rectangular wire can be manufactured.

Hereinafter, the present invention will be described in detail with reference to the drawings shown in the embodiments.
The method and apparatus for producing a rectangular wire according to the present invention is a method and an apparatus for producing a rectangular wire having a rectangular cross section by rolling a conducting wire having a circular cross section with two or more rolls.
FIG. 1 is an overall front view showing an embodiment of a flat wire manufacturing apparatus according to the present invention, and FIG. 2 is a front view of a main part of FIG.

In FIG. 1, 10 on the left side is a supply drum around which a conducting wire (round wire) D having a circular cross section is wound, and 11 on the right side is a winding drum around which the manufactured rectangular wire C is wound. In the middle of the supply drum 10 and the winding drum 11, a pair of upstream rolls 1, 1 for rolling the conductive wire D (as it is) to produce the intermediate wire M, and rolling the intermediate wire M to produce a rectangular wire C. A pair of final rolls 2 and 2 to be manufactured are sequentially arranged from upstream to downstream. In this case, two rolls (upstream rolls 1, 1 and final rolls 2, 2) are provided. The upstream rolls 1 and 1 and the final rolls 2 and 2 are upper and lower rolls arranged side by side.
3 is a thickness measuring device for measuring the final thickness dimension of the flat wire C downstream of the final rolls 2 and 2, and 4 is the final width dimension of the flat wire C downstream of the final rolls 2 and 2. It is a width measuring device to measure. Reference numerals 12 and 13 denote tension adjusting devices.

Here, the final thickness dimension and the final width dimension of the flat wire C will be described.
FIG. 3 is a cross-sectional view of the conductive wire D, the intermediate wire M, and the flat wire C, and shows a state in which rolling is performed in order from top to bottom. As shown in FIG. 3, the flat wire C has upper and lower roll pressing surfaces 8 and 8, and in the cross section of the flat wire C, the dimension perpendicular to the roll pressing surface 8 is the final thickness dimension. Let T ₁ be the dimension in the direction parallel to the roll pressing surface 8 and the final width dimension W ₁ . Further, the final thickness dimension T ₁ and the final width dimension W ₁ are values that may fluctuate without completely matching the target thickness dimension T ₀ and the target width dimension W _{0 of the} rectangular wire C, in other words. For example, the final thickness dimension T ₁ and the final width dimension W ₁ are actually measured values of the rectangular wire C measured by the thickness measuring instrument 3 and the width measuring instrument 4.

In FIG. 2, reference numeral 5 denotes the final width dimension W ₁ obtained from the width measuring device 4 and the target width dimension W ₀ (preliminarily input), and the width dimension of the rectangular line C is the target. width (to approach) so that the dimension W _0, a first roll control means roll spacing dimension X ₁ of the upstream rolls 1, 1 is adjusted (controlled) (circuit). In other words, the first roll control means 5 is arranged so that the cross-sectional area of the intermediate wire M becomes the optimum cross-sectional area S ₀ (so that a rectangular wire C having the target width W ₀ is obtained). in which 1 of the roll gap dimension X ₁ is adjusted (controlled).

Further, the first roll control means 5 has a comparison unit 9 for comparing and determining whether the final width dimension W ₁ is larger or smaller than the target width dimension W ₀ . The first roll control means 5 is configured to feed back and control the result determined by the comparison unit 9 to an actuator such as a cylinder (not shown) that moves the upstream rolls 1 and 1 close to and away from each other.

6 shows a comparison between the final thickness dimension T ₁ obtained from the thickness measuring device 3 and the target thickness dimension T ₀ (preliminarily input), and the thickness dimension of the rectangular wire C is the target. so as to have a thickness dimension T ₀ (as it approaches), a second roll control means the roll gap dimension X ₂ of the final roll 2,2 to adjust (control) (circuit). The second roll control means 6 has a comparison unit 14 for comparing and judging whether the final thickness dimension T ₁ is larger or smaller than the target thickness dimension T ₀ , and this comparison judgment result approaches the final rolls 2 and 2. It is configured to be fed back to an actuator such as a cylinder (not shown) that is separated (not shown).

FIG. 4 is a main part front view showing another embodiment of the flat wire manufacturing apparatus of the present invention. In the figure, 7 is an example of an apparatus for cooling the surfaces of the upstream rolls 1, 1. As shown in the figure, cooling devices 7 and 7 for cooling the upstream rolls 1 and 1 are provided. The cooling device 7 may be a known device. In FIG. 4, the cooling device 7 includes a concave curved surface 15 approaching the outer peripheral surface (roll outer peripheral surface) of the upstream roll 1, and a coolant between the roll outer peripheral surface and the concave curved surface 15. And a coolant supply path 16 for supplying (water). Reference numeral 17 denotes a seal member. And a cooling fluid is supplied to the clearance gap between a roll outer peripheral surface and the concave curved surface 15, and the rotating upstream roll 1 is cooled.
Further, the cooling devices 7 and 7 are attached to the final rolls 2 and 2 in the same manner as the upstream rolls 1 and 1.
Moreover, you may attach the heating apparatus 19 (illustration omitted) to each roll 1, 2, and the said cooling device 7 and the heating apparatus 19 cool or heat the surface of each roll 1, 2 directly or indirectly. Alternatively, a heat medium (an endothermic medium / heat generating medium) may be placed inside each of the rolls 1 and 2, and the entire rolls 1 and 2 may be cooled or heated.

Although not shown in the drawings, when the rectangular wire manufacturing apparatus of the present invention has three or more pairs of rolls, the most downstream position roll is the final roll 2, 2, and one upstream of the final roll 2, 2. Are the upstream rolls 1, 1. Then, the thickness measuring device 3 and the width measuring device 4 are installed downstream of the roll at the most downstream position, and the final thickness dimension T ₁ and the final width dimension W _{1 of the} rectangular wire are measured. That is, it is only necessary to adjust and control the roll interval dimension between the most downstream position roll and the one upstream position roll as described above.

Further, in order to reduce the time lag when data measured by the thickness measuring device 3 and the width measuring device 4 is fed back to the final rolls 2 and 2 and the upstream rolls 1 and 1, the thickness measuring device 3 and the width measuring device are measured. The container 4 is preferably disposed in the vicinity of the downstream side of the final rolls 2 and 2. Similarly, in order to reduce the time lag at the time of feedback, it is desirable that the upstream rolls 1 and 1 and the final rolls 2 and 2 are arranged close to each other.
Further, the thickness measuring device 3 and the width measuring device 4 may be either a contact type sensor or a non-contact type sensor, and either of the arrangement positions of the thickness measuring device 3 and the width measuring device 4 may be on the upstream side.
Further, the upstream rolls 1 and 1 and the final rolls 2 and 2 can be freely used as a pair of left and right rolls.

The manufacturing method of the flat wire of this invention is demonstrated based on FIGS.
In FIG. 1, first, a lead wire (copper wire) D having the same circular cross section is fed out from the supply drum 10 in the longitudinal direction, and the upstream rolls 1 and 1 and the final rolls 2 and 2 are rotated with a predetermined roll interval. And send them sequentially. The conducting wire D is rolled by the upstream rolls 1, 1 to produce an intermediate wire M having a substantially rectangular cross section in which flat roll pressing surfaces 18, 18 are formed vertically (see FIG. 3). The intermediate wire M is further thinly rolled by the final rolls 2 and 2, and a rectangular wire C having a substantially rectangular cross section with a target thickness dimension T ₀ and a target width dimension W ₀ is manufactured (FIG. 3). reference).

On the other hand, the thickness measuring device 3 and the width measuring device 4 are arranged downstream of the final rolls 2 and 2 to determine the final thickness dimension T ₁ and the final width dimension W ₁ of the rectangular wire C (immediately after manufacture) every minute time. (For example, 1620 times / s).

As described above, when the rolling operation for producing the flat wire C from the conducting wire D through the intermediate wire M is continuously performed, the processing heat generated when the conducting wire D and the intermediate wire M are plastically deformed, The rolls 1 and 2 are heated and thermally expanded by frictional heat generated between the wire 2 and the conductive wire D / intermediate wire M. The roll diameter is increased by the thermal expansion of the rolls 1 and 2, that is, the roll interval dimensions X ₁ and X ₂ are reduced, so that the thickness dimension and the width dimension of the rectangular wire C to be manufactured vary. That is, the final thickness dimension T ₁ and the final width dimension W ₁ measured by the thickness measuring instrument 3 and the width measuring instrument 4 are different from the target thickness dimension T ₀ and the target width dimension W ₀ .

Data of the final thickness dimension T ₁ measured by the thickness measuring device 3 is sent to the comparison unit 14 of the second roll control means 6. Then, the comparison unit 14 determines whether the final thickness dimension T ₁ is larger or smaller than the target thickness dimension T ₀ inputted in advance.
Since the final thickness T ₁ is determined by the roll spacing dimension X _2, by the roll clearance dimension X ₂ at this thermal expansion becomes small, the final thickness T ₁ is the target thickness T ₀ value less than It is judged that.

The second roll control means 6 feeds back the determination result of the comparison unit 14 to the final rolls 2 and 2 (actuators thereof) so that the thickness dimension of the rectangular wire C becomes the target thickness dimension T ₀ (approaching). ) to adjust the roll gap dimension X ₂ of the final roll 2,2.
Specifically, since it is determined that the final thickness dimension T ₁ is smaller than the target thickness dimension T ₀ , the final rolls 2 and 2 are controlled to increase the roll interval dimension X ₂ .

Further, since the roll interval dimension X ₂ moved by one feedback is a minute dimension (for example, 0.06 micron), the thickness dimension of the flat wire C becomes the target thickness dimension T ₀ (approaching) every time feedback is performed. ) to move the roll interval dimension X ₂ little by little.
Note that the second roll control means 6, after adjusting the roll clearance dimension X ₂ of the final roll 2,2, then until the measured thickness measuring device 3 (a few seconds), the roll spacing dimension X ₂ Do not adjust. That is, the adjusted roll interval X ₂ is maintained for several seconds as it is, and the thickness of the flat wire C is measured again with the thickness measuring device 3 in a stable state (not changing) and fed back. Yes. If the final thickness dimension T ₁ remeasured by the thickness measuring device 3 does not reach the target thickness dimension T ₀ , feedback control is performed to adjust the roll interval dimension X ₂ (so as to increase it).

Further, the data of the final width dimension W ₁ measured by the width measuring device 4 is sent to the comparison unit 9 of the first roll control means 5. Then, the comparison unit 9 determines whether the final width dimension W ₁ is larger or smaller than the target width dimension W ₀ inputted in advance.
The first roll control means 5 feeds back the determination result of the comparison unit 9 to the upstream rolls 1 and 1 (actuators thereof) so that the width dimension of the flat wire C becomes the target width dimension W ₀ (approaching). ) to adjust the roll gap dimension X ₁ of the upstream roll 1,1.

Here, the final width dimension W ₁ is determined to be smaller than the target width dimension W ₀ by the comparison unit 9 by thermal expansion of the rolls 1 and 2, adjustment of the roll interval dimension by the second roll control means 6, and the like. The case will be described.
Since it is determined that the final width dimension W ₁ is smaller than the target width dimension W ₀ , the cross-sectional area of the intermediate wire M fed to the final rolls 2 and 2 is increased, and the width dimension of the rectangular wire C to be manufactured is increased. To do. In other words, the cross-sectional area of the intermediate wire M is increased so as to become (approach) the optimum cross-sectional area S ₀ for “obtaining the rectangular wire C having the target width dimension W ₀ ”.

In order to increase (increase) the cross-sectional area of the manufactured intermediate wire M to the optimum cross-sectional area S ₀ , the first roll control means 5 controls the upstream rolls 1 and 1 so as to increase the roll interval dimension X ₁ .
In this way, in the upstream rolls 1 and 1 in which the roll interval dimension X ₁ is adjusted and controlled, the conducting wire D is rolled to produce the intermediate wire M having the optimum cross-sectional area S ₀ , and the intermediate wire M is rolled as described above. The final rolls 2 and 2 in which the distance dimension X ₂ is adjusted and controlled are fed and rolled to produce a rectangular wire C having a target thickness dimension T ₀ and a target width dimension W ₀ .
Further, when the roll interval dimension of one of the upstream rolls 1 and 1 and the final rolls 2 and 2 is adjusted and controlled, the adjustment control of the other roll interval dimension is not performed. At the same time, the adjustment is not performed for the roll interval dimension.

Also, the feedback time interval of the first roll control means 5 and the roll interval dimension X _{1 that} is moved by one feedback are the same as those of the second roll control means 6.
In addition, when the final thickness dimension T ₁ is larger than the target thickness dimension T ₀ and when the final width dimension W ₁ is larger than the target width dimension W ₀ , the operation opposite to that described above (control method). Therefore, explanation is omitted.
In addition, the upstream rolls 1 and 1 perform high rolling and the final rolls 2 and 2 perform low rolling, and the upstream rolls 1 and 1 perform low rolling and the final rolls 2 and 2 perform high rolling. The width dimension of the rectangular wire C that changes by adjusting and controlling the roll spacing dimension X1 of the rolls ₁ and ₁ may be reversed, but the roll spacing dimension of the upstream rolls 1 and 1 is appropriately determined according to each case. X ₁ may be adjusted and controlled.

As described above, in the method for producing a flat wire according to the present invention, the flat wire C having the target thickness dimension T ₀ and the target width dimension W ₀ is manufactured by sequentially feeding the conducting wire D having a circular cross section to two or more rolls. In the method of manufacturing a rectangular wire, the final thickness dimension T ₁ of the rectangular wire C is measured downstream of the final rolls 2 and 2 at the most downstream position, and the final thickness dimension T ₁ and the target thickness dimension T _{0 are} measured. And the roll interval dimension X 2 of the final rolls 2 and ₂ is adjusted, and the final width dimension W ₁ of the flat wire C is measured downstream of the final rolls 2 and 2, and the final width dimension is measured. W ₁ and by adjusting the roll clearance dimension X ₁ of the upstream rolls 1, 1 one upstream of the final roll 2,2 by comparing the magnitude of the target width W _0, optimally at upstream rolls 1, 1 sent to the final roll 2,2 to produce the intermediate wire M of the cross-sectional area S _0, to produce a flat line C of the target thickness T ₀ · target width W ₀ In, and a final width W ₁ and the final thickness T ₁ of the a finished flat wire C, and the roll spacing dimension X _1, X ₂ is fed back to the upstream roll 1,1 and the final roll 2,2 It is possible to adjust, and it is possible to improve the dimensional accuracy and to manufacture a uniform rectangular wire C over the longitudinal direction.
That is, the final thickness dimension T ₁ is fed back to the final rolls 2 and 2 that determine the thickness dimension of the flat wire C to adjust the roll interval dimension X ₂ , and the flat wire C thickness dimension is set to the target width dimension. W ₀ can be manufactured. Further, the final width dimension W ₁ is fed back to the upstream rolls 1, 1 and the roll interval dimension X ₁ is adjusted so that the cross-sectional area of the intermediate wire M to be supplied to the final rolls 2, 2 (optimal cross-sectional area S _0). To adjust the width dimension of the flat wire C to the target width dimension W ₀ . By doing so, the roll spacing dimensions X ₁ and X ₂ are changed by the thermal expansion of the rolls 1 and 2 and the wear of the surfaces of the rolls 1 and 2, and the friction coefficient of the rolls 1 and 2 is changed. In addition, it is possible to manufacture a highly accurate rectangular wire C.

  In addition, since the upstream rolls 1 and 1 and the final rolls 2 and 2 are rolled while being cooled or heated, when rolling while cooling, the thermal expansion of each roll 1 and 2 due to the heat generated during rolling is performed. In the case of rolling while heating, the rolls 1 and 2 can be actively heated to make it difficult to thermally expand due to frictional heat or the like during subsequent rolling. As a result, the dimensional accuracy of the flat wire C can be further improved.

The rectangular wire manufacturing apparatus of the present invention includes an upstream roll 1 and 1 that manufactures an intermediate wire M by rolling a conductor wire D having a circular cross section as it is or after passing through another roll, and an intermediate wire M. A thickness measuring device 3 for sequentially rolling the final rolls 2 and 2 for producing the flat wire C by rolling and measuring the final thickness dimension T ₁ of the flat wire C downstream of the final rolls 2 and 2; and a width measuring device 4 for measuring the final width dimension W ₁ of the rectangular wire C downstream of the final roll 2,2, with a target width of the final width W ₁ and the flat wire C obtained from the width measuring device 4 adjusting the roll clearance dimension X ₁ of the upstream rolls 1, 1 so as to optimize the cross-sectional area S ₀ for the intermediate wire M and compares the sized W ₀ to obtain a flat wire C target width W ₀ a first roll control means 5 compares the magnitude of the final thickness T ₁ and the target thickness T ₀ of the rectangular wire C obtained from the thickness measuring device 3 And a second roll control means 6 for flat wire C is to adjust the roll gap dimension X ₂ of the final roll 2,2 so that the target thickness T _0, so equipped, the final is finished flat wire C The width dimension W ₁ and the final thickness dimension T ₁ can be fed back to the upstream rolls 1, 1 and the final rolls 2, ₂ to adjust the roll spacing dimensions X ₁ , X ₂ , improving dimensional accuracy. A uniform rectangular wire C can be manufactured in the longitudinal direction.
That is, the final thickness dimension T ₁ is fed back to the final rolls 2 and 2 that determine the thickness dimension of the flat wire C to adjust the roll interval dimension X ₂ , and the flat wire C thickness dimension is set to the target width dimension. W ₀ can be manufactured. Further, the final width dimension W ₁ is fed back to the upstream rolls 1, 1 and the roll interval dimension X ₁ is adjusted so that the cross-sectional area of the intermediate wire M to be supplied to the final rolls 2, 2 (optimal cross-sectional area S _0). To adjust the width dimension of the flat wire C to the target width dimension W ₀ . By doing so, the roll spacing dimensions X ₁ and X ₂ are changed by the thermal expansion of the rolls 1 and 2 and the wear of the surfaces of the rolls 1 and 2, and the friction coefficient of the rolls 1 and 2 is changed. In addition, it is possible to manufacture a highly accurate rectangular wire C.

  Further, since the cooling device 7 or the heating device 19 is attached to the upstream rolls 1, 1 and the final rolls 2, 2, when the cooling device 7 is attached, the thermal expansion of each roll 1, 2 due to the heat generated during rolling. In the case where the heating device 19 is provided, the rolls 1 and 2 are positively heated to make it difficult to thermally expand due to frictional heat or the like during subsequent rolling. Thereby, the dimensional accuracy of the flat wire C can be further improved.

It is a whole front view which shows one Embodiment of the manufacturing apparatus of the flat wire of this invention. It is a principal part front view. It is sectional drawing of conducting wire, intermediate | middle wire, and a flat wire. It is a principal part front view which shows other embodiment. It is a whole front view which shows the manufacturing apparatus of the conventional flat wire.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Upstream roll 2 Final roll 3 Thickness measuring instrument 4 Width measuring instrument 5 1st roll control means 6 2nd roll control means 7 Cooling device
19 Heating device C Flat wire D Conductor M Intermediate wire S ₀ Optimum cross-sectional area T ₀ Target thickness dimension T ₁ Final thickness dimension W ₀ Target width dimension W ₁ Final width dimension X ₁ Roll interval dimension X ₂ Roll interval dimension

Claims (4)

In a method of manufacturing a rectangular wire, a conducting wire (D) having a circular cross section is sequentially fed into two or more rolls to produce a rectangular wire (C) having a target thickness dimension (T ₀ ) and a target width dimension (W ₀ ). And
The final thickness dimension (T ₁ ) of the flat wire (C) is measured downstream of the final rolls (2) and (2) at the most downstream position, and the final thickness dimension (T ₁ ) and the target thickness dimension are measured. (T ₀ ) is compared to adjust the roll interval dimension (X ₂ ) of the final rolls (2) and (2), and the final width dimension (W ₁ ) of the rectangular wire (C) is Measured downstream of the final rolls (2) and (2), the final width dimension (W ₁ ) is compared with the target width dimension (W ₀ ) to compare the final roll (2) and (2). The upstream gap (X ₁ ) of the upstream roll (1) (1) on the upstream side is adjusted, and the intermediate wire (M) having the optimum cross-sectional area (S ₀ ) is adjusted by the upstream roll (1) (1). Manufacturing and sending to the final rolls (2) and (2) to manufacture a rectangular wire (C) having the above target thickness dimension (T ₀ ) and target width dimension (W ₀ ), Method.   The method for producing a rectangular wire according to claim 1, wherein the upstream roll (1) (1) and the final roll (2) (2) are rolled while being cooled or heated. An upstream roll (1) (1) for producing an intermediate wire (M) by rolling a conductive wire (D) having a circular cross section as it is or after passing through another roll, and the intermediate wire (M) The final rolls (2) and (2) for producing a flat wire (C) by rolling are sequentially disposed, and the final thickness of the flat wire (C) downstream of the final rolls (2) and (2). A thickness measuring instrument (3) for measuring the dimension (T ₁ ) and a width measuring instrument for measuring the final width dimension (W ₁ ) of the rectangular wire (C) downstream of the final rolls (2) and (2). (4), and comparing the final width dimension (W ₁ ) obtained from the width measuring instrument (4) with the target width dimension (W ₀ ) of the rectangular wire (C) The roll interval dimension (X ₁ ) of the upstream rolls (1) and (1) so that the wire rod (M) has an optimum cross-sectional area (S ₀ ) for obtaining a rectangular wire (C) of the target width dimension (W ₀ ). ) The first roll control means (5), the final thickness dimension (T ₁ ) obtained from the thickness measuring device (3) and the target thickness dimension (T ₀ ) of the rectangular wire (C) The second roll control means for adjusting the roll interval dimension (X ₂ ) of the final rolls (2) and (2) so that the rectangular wire (C) becomes the target thickness dimension (T ₀ ) 6). A flat wire manufacturing apparatus characterized by comprising:   The rectangular wire manufacturing apparatus according to claim 3, wherein a cooling device (7) or a heating device (19) is attached to the upstream roll (1) (1) and the final roll (2) (2).

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