JP2011147977A - Method of producing copper strip material having deformed cross section - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of producing a copper strip material having a deformed cross section, by which a slitting process is omitted. <P>SOLUTION: The method of producing the copper strip material having the deformed cross section comprises: a strip material supplying process where a flat-plate-like copper strip material 6 is supplied to a flat-board-like V-shaped die 1; a pressure press working process where the flat-plate-like copper strip material 6 is pressurized against a base face on which a V-shaped projection part is provided; a rolling process where the copper strip material 7 having the deformed cross section having a thick plate part 7a formed in a portion of the flat-plate-like copper strip material 6 which is passed through a grooved part 16 and a thin plate part 7b formed in a portion passing through the V-shaped projection part is formed by pulling out the pressurized flat-plate-like copper strip material 6 from one end toward the other end; and an overall width control process where the overall width of the deformed copper strip material 7 is measured and variation in the overall width of the produced copper strip material 7 having the deformed cross section is controlled within a predetermined range on the basis of the measurement result. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a method for producing a modified cross-section copper strip. In particular, the present invention relates to a method for manufacturing a modified cross-section copper strip in which portions having different thicknesses in the width direction are formed along the longitudinal direction.

  Conventionally, it has a cross-sectional shape in which one or more thick portions and thin portions are formed along the width direction, and the cross-sectional shape is a roll formed continuously and uniformly in the longitudinal direction of the strip. A method for correcting a cross-sectional shape of a cross-section after slitting, comprising a top and bottom roll for shaping the thickness direction of the irregular cross-section and a pair of side rolls for shaping the plate width direction There is known a method for correcting the cross-section of a deformed cross section that passes at least one of the cross-section correction stands (see, for example, Patent Document 1).

  According to the method for correcting the cross-section of the irregular cross-section described in Patent Document 1, the accuracy of the cross-sectional shape decreases due to non-uniformity of metal flow during roll forming or thermal distortion during annealing after metal flow. Even in this case, it is possible to correct the deformed cross-section to a desired cross-sectional shape with high dimensional accuracy.

JP 2006-68754 A

  In the method of manufacturing a conventional cross-section copper strip by manufacturing a deformed cross-section copper strip, after processing the raw material copper strip wider than the product dimensions in order to produce a desired irregular cross-section copper strip, It is formed into an irregular cross-section copper strip by slitting to the width of the product dimensions. Therefore, due to the bending moment acting on the copper strip during slitting, warping may occur in the slit-formed portion of the irregular cross-section copper strip, which may deteriorate the quality of the irregular cross-section copper strip, and Since wide processing is performed to form a portion to be slit, material is wasted due to wide processing.

  Further, in the method for correcting the cross section of the irregular cross section described in Patent Document 1, although the warp generated in the slit process can be corrected, the manufacturing process of the irregular cross section includes the slit process, so that the irregular cross section is included. There is a limit to reducing the manufacturing cost of strips.

  Therefore, the objective of this invention is providing the manufacturing method of the irregular cross-section copper strip which can abbreviate | omit a slit process.

  In order to achieve the above-mentioned object, the present invention provides a base having a base surface and a V that is provided on the base surface and has a V-shaped divergent shape from one end to the other end in plan view. A flat copper strip with a flat plate-like V-shaped die having a letter-shaped projection and a groove provided from one end of the V-shaped projection to the center of the V-shaped projection along the other end. A strip supplying step, a pressing process for pressing the flat copper strip on the base surface provided with the V-shaped projection, and the pressed flat copper strip from one end to the other The cross-section copper strip material having a thick plate portion formed in a portion of the flat copper strip member drawn toward the end of the plate and passed through the groove portion, and a thin plate portion formed in a portion via the V-shaped projection portion Measure the entire width of the deformed cross-section copper strip and the deformed cross-section copper strip manufactured based on the measurement results. Method for producing a modified cross-copper strip material and a full width control step of controlling the variation in a predetermined range is provided.

  Moreover, the manufacturing method of the said irregular cross-section copper strip is a width control process, and the fluctuation | variation of a full width is carried out by feedback-controlling the front tension | tensile_strength in drawing of the pressed flat copper strip according to the measured value of the full width. It can be controlled within a predetermined range.

  Further, in the method for manufacturing the irregular cross-section copper strip, the full width control step reduces the front tension when the measured value of the measured full width is smaller than a predetermined target value, and the measured value of the measured full width is determined in advance. It is also possible to execute feedback control for increasing the forward tension when the value is larger than the set target value.

  Further, in the method of manufacturing the above-mentioned irregular cross-section copper strip material, the full width control step performs a feedback control on the rear tension in the drawing of the flat copper strip material in accordance with the measured value of the full width, so that the fluctuation of the full width is predetermined. It can also be controlled within the range.

  Moreover, the manufacturing method of the said irregular cross-section copper strip is a press-pressing process, a flat copper strip is pressed to a base surface with a press roll, and the full width control process measures the rotation speed of a press roll of the full width measured. By performing feedback control according to the measured value, the fluctuation of the full width can be controlled within a predetermined range.

  According to the method for producing a modified cross-section copper strip according to the present invention, a method for producing a modified cross-section copper strip that can omit the slitting process can be provided.

(A) is a top view of the flat plate-shaped V type | mold die used for the manufacturing method of the irregular cross-section copper strip which concerns on embodiment of this invention, (b) is a partial perspective view of a flat plate-like V type | mold die. It is. It is a figure which shows the flow of manufacture of the irregular cross-section copper strip which concerns on this Embodiment. It is a schematic diagram of the manufacturing apparatus used for manufacture of the irregular cross-section copper strip which concerns on this Embodiment. It is a schematic diagram of the rolling process with which the manufacturing method of the irregular cross-section copper strip which concerns on this Embodiment is provided. It is a figure which shows the relationship between front tension | tensile_strength and a deformed cross-section copper strip width.

[Summary of embodiment]
In a method for producing a deformed cross-section copper strip material from a flat strip material, a base plate having a base surface and a base provided on the base surface, from one end to the other end in plan view And a V-shaped projecting portion formed in a V-shaped divergent shape toward the end, and a central region of the V-shaped projecting portion from the one end of the V-shaped projecting portion to the other end. A strip material supply step of supplying a flat copper strip to a flat V-shaped die having a groove portion to be pressed, and pressing the flat copper strip on the base surface provided with the V-shaped projection A pressing press working step, and the pressed plate-shaped copper strip material is drawn from the one end toward the other end, and is formed on a portion of the plate-shaped copper strip material that has passed through the groove A deformed cross-section copper strip having a portion and a thin plate portion formed in a portion via the V-shaped projection An irregular cross section comprising: a rolling step to be formed; and a full width control step of measuring a full width of the irregular cross section copper strip and controlling a variation in the full width of the irregular cross section copper strip within a predetermined range based on a measurement result A method for producing a copper strip is provided.

[Embodiment]
(Flat plate-shaped V-shaped die 1)
Fig.1 (a) shows the top view of the flat plate-shaped V type | mold die used for the manufacturing method of the irregular cross-section copper strip which concerns on embodiment of this invention, FIG.1 (b) shows the flat plate-like V type | mold die. FIG.

  The flat plate-shaped V-shaped die 1 is provided at a position facing the base 10, the first V-shaped protrusion 12 provided on the surface of the base 10, and the first V-shaped protrusion 12 on the surface of the base 10. And a groove 16 provided between the first V-shaped projecting portion 12 and the second V-shaped projecting portion 14. That is, the flat plate-shaped V-shaped die 1 has a first V-shaped protrusion 12 having a V-shaped shape extending from the tip 12b and a second V-shaped protrusion having a V-shaped shape extending from the tip 14b. 14 and a groove 16 provided between the first V-shaped protrusion 12 and the second V-shaped protrusion 14 are provided on the flat upper surface (that is, the surface) of the base 10. When the central axis 20 in a plan view is assumed in the direction along the longitudinal direction of the flat plate-shaped V-shaped die 1, the first V-shaped projecting portion 12 has a second V-shape with the central axis 20 as the symmetry axis. It is provided at a position symmetrical to the line-shaped protrusion 14.

  Specifically, the base 10 has a flat base surface 10a and a flat base surface 10b. The base surface 10a is located on the first V-shaped projection 12 side, and the base surface 10b is located on the second V-shaped projection 14 side. In addition, since the base surface 10a and the base surface 10b comprise the surface of the base 10, they are mutually continuous. That is, the base surface 10a and the base surface 10b are continuous as the same plane, and the base surface 10a and the base surface 10b and the bottom surface of the groove portion 16 are, for example, the back surface of the base 10 (that is, the first V-shaped protrusion). The surface on the opposite side of the surface on which the portion 12 and the second V-shaped protrusion 14 are provided) is provided at the same height from the reference surface.

  The first V-shaped protrusion 12 is provided on the base surface 10a, and is formed in a V-shaped divergent shape from a front end 12b as one end to a rear end 12c as the other end in plan view. The Similarly, the second V-shaped protrusion 14 is provided on the base surface 10b and is formed in a V-shaped divergent shape from the front end 14b as one end to the rear end 14c as the other end in plan view. Is done. Further, the groove 16 is provided between the first V-shaped protrusion 12 and the second V-shaped protrusion 14. That is, the groove 16 passes through a central region between the first V-shaped protrusion 12 and the second V-shaped protrusion 14, and is at one end of each of the first V-shaped protrusion 12 and the second V-shaped protrusion 14. To the other end.

  The first V-shaped protrusion 12 has a first slope 12a on the opposite side of the second V-shaped protrusion 14 side. Similarly, the 2nd V-shaped projection part 14 has the 2nd slope 14a on the opposite side to the 1st V-shaped projection part 12 side. Each of the first inclined surface 12a and the second inclined surface 14a can be smoothly rolled on the flat copper strip 6 as a workpiece in the method for producing a modified cross-section copper strip according to the present embodiment. And having a predetermined inclination angle.

  The flat plate-like V-shaped die 1 can be produced by grinding a metal block material for producing a mold, for example.

(Manufacturing process of irregular cross-section copper strip)
FIG. 2A shows an example of the flow of manufacturing a deformed cross-section copper strip according to the present embodiment. Moreover, FIG. 2B shows the outline of a manufacturing apparatus used for manufacturing a deformed cross-section copper strip according to the present embodiment.

(Outline of manufacturing process of irregular cross-section copper strip)
The irregular cross-section copper strip 7 according to the present embodiment is manufactured through the following steps as shown in FIG. 2A, for example. First, the flat copper strip 6 is supplied to the flat plate-shaped V-shaped die 1 (strip supply step, step 10, hereinafter, step is referred to as “S”). Next, the flat copper strip 6 is subjected to pressing using a flat V-shaped die 1 (pressing pressing step, S12). Subsequently, the pressed flat copper strip 6 is removed from the V-shaped tip 12 b of the first V-shaped projection 12 and the V-shaped tip 14 b of the second V-shaped projection 14 of the flat plate-shaped V-shaped die 1. It moves to the back of the end spread and pulls out, and forms the irregular cross-section copper strip 7 (rolling process, S14). And the full width of the irregular cross-section copper strip material 7 is measured, and the fluctuation | variation of the full width of the irregular cross-section copper strip material 7 is controlled within a predetermined range based on a measurement result (full width control process, S16).

  Hereinafter, a description will be given with reference to FIG. 2B.

(Outline of manufacturing equipment for irregular cross-section copper strip)
First, the manufacturing apparatus of the irregular cross-section copper strip material which processes the flat copper strip material 6 into the irregular cross-section copper strip material 7 includes the flat plate-shaped V-shaped die 1, the planetary rolling mill 3, and the flat plate-shaped copper strip material 6. Are provided in the manufacturing process of the deformed cross-section copper strip 7, which is a subsequent stage of the flat-plate-shaped V-shaped die 1. And a full width measuring device 2. The planetary rolling mill 3 includes a shaft 30, a rotor 32 provided on the outer periphery of the shaft 30, a wheel-like rail 34 provided on the outer periphery of the rotor 32, and a plurality of pressing rolls 36 provided on the outer periphery of the wheel-like rail 34. Have A linear portion 38 is provided in a region of the wheel-shaped rail 34 facing the flat plate-shaped V-shaped die 1.

  The apparatus for producing a modified cross-section copper strip according to the present embodiment includes a flat plate-shaped V-shaped die 1 and a rolled surface of the flat plate-shaped V-shaped die 1 (that is, a first V-shaped protrusion 12 and a second V-shaped). The flat copper strip 6 is rolled with the planetary rolling mill 3 arranged on the surface side where the projections 14 are provided), and the deformed cross-section copper strip in the subsequent stage of the flat plate-shaped V-shaped die 1. The variation of the full width of the irregular cross-section copper strip manufactured based on the measurement result of the full width measuring instrument 2 provided during the manufacturing process is controlled within a predetermined range.

(Details of manufacturing process of irregular cross-section copper strip)
First, the feed reel 4 supplies the flat copper strip 6 wound around the feed reel 4 toward the flat plate-shaped V-shaped die 1 (in FIG. 2B, the flat copper strip is indicated by an arrow A). The supply direction of the material 6 is shown). The flat copper strip 6 positioned between the flat V-shaped die 1 and the pressing roll 36 is pressed. Specifically, the flat copper strip material 6 is pressed to the base surface 10a and the base surface 10b provided with the first V-shaped protrusion 12 and the second V-shaped protrusion 14 by using the pressing roll 36.

  Next, the pressed flat plate copper strip 6 is pulled out from the front end 12b and the front end 14b as one end toward the rear end 12c and the rear end 14c as the other end, thereby pressing the flat plate copper strip material pressed. 6 is drawn. By repeating the drawing process for each predetermined length of the flat copper strip 6, the thick plate portion 7a is formed in the portion of the flat copper strip 6 that has passed through the groove 16, and the first V-shaped projections are formed. A thin plate portion 7 b is formed in a portion that passes through the portion 12 and the second V-shaped projection portion 14. Thereby, the irregular cross-section copper strip material 7 in which the step which continued substantially linearly along the longitudinal direction was formed is obtained.

  FIG. 3: shows the outline | summary of the rolling process with which the manufacturing method of the irregular cross-section copper strip which concerns on this Embodiment is provided.

  In the rolling step, the flat copper strip 6 as a workpiece is along the first V-shaped protrusion 12 and the second V-shaped protrusion 14 from the front end 12b and the front end 14b to the rear end 12c and the rear end 14c. Rolled. Thereby, the part which passed through the 1st V-shaped projection part 12 and the 2nd V-shaped projection part 14 in the flat copper strip material 6, ie, the both side parts of the flat copper strip material 6 (namely, flat plate shape). Thin plate portions 7b are formed on both ends of the copper strip 6 in the longitudinal direction). On the other hand, the portion of the flat copper strip 6 that has passed through the groove 16 of the flat plate-shaped V-shaped die 1 is rolled with a smaller rolling amount than the portion that has passed through the first V-shaped protrusion 12 and the second V-shaped protrusion 14. Thus, a thick plate portion 7a thicker than the thin plate portion 7b is formed. Thus, the flat copper strip 6 subjected to pressing in the flat plate-shaped V-shaped die 1 has a step-shaped irregular cross-section copper strip in which the thick plate portion 7a and the thin plate portion 7b are mixed in the width direction. The material 7 is processed.

  That is, as shown in FIG. 3, the flat copper strip 6 as the object to be processed extends from the V-shaped tip 12 b and the tip 14 b along the first V-shaped projection 12 and the second V-shaped projection 14. It is rolled toward the rear end 12c and the rear end 14c via the slope 12a and the slope 14a. Thus, the portion of the flat copper strip 6 that has passed through the first V-shaped projection 12 and the second V-shaped projection 14 is formed as a thin plate portion 7b, and the portion that passes through the groove portion 16 is formed as a thick plate portion 7a. Is done.

(Full width control)
In the rolling process, the state of the flat copper strip 6 after rolling changes according to the room temperature, the temperature change of the manufacturing apparatus, and the like, and the overall width of the deformed cross-section copper strip 7 also changes. Here, the total width becomes narrower as the proportion of the plastic deformation of the flat copper strip 6 in the longitudinal direction, which is the direction of movement of the pressing roll 36, increases. Since the direction of movement of the pressing roll 36 and the direction of plastic deformation are the same direction, the rate of plastic deformation in the longitudinal direction increases when the front tension is large. That is, by performing feedback control of the front tension with the front tension as a control target, the fluctuation (that is, error) of the entire width of the stepped deformed cross-section copper strip 7 to be manufactured can be suppressed within an allowable range.

  Specifically, first, the full width of the deformed cross section copper strip 7 is measured by the full width measuring instrument 2 provided as a part of the manufacturing process of the deformed cross section copper strip (that is, in-line) at the subsequent stage of the flat plate-shaped V-shaped die 1. Is measured (measurement process). The full width measuring device 2 measures the full width of the irregular cross-section copper strip 7 in a non-contact manner. For example, the full width measuring device 2 measures the full width of the irregular cross-section copper strip material 7 using a laser beam. The full width measuring device 2 uses measurement result information indicating measurement results (that is, measured values of the measured full width), a rear tension control unit that controls the rear tension of the feed reel 4, and a front that controls the front tension of the take-up reel 5. The tension control unit or the rotation number control unit that controls the number of rotations of the pressing roll 36 is supplied (the rear tension control unit, the front tension control unit, and the rotation number control unit are not shown).

  Subsequently, the rear tension, the front tension, or the rotation speed of the pressing roll 36 is feedback-controlled based on the measurement result so that the variation in the total width of the deformed cross-section copper strip 7 falls within a predetermined error range (full width control process). , S16).

  For example, when controlling the front tension, the front tension is controlled as follows. That is, in the full width control step, the front tension (ie, the winding tension) in the drawing of the pressed flat copper strip 6 from the flat plate-shaped V-shaped die 1 is feedback controlled according to the measured value of the full width. By doing so, the fluctuation of the full width is controlled within a predetermined range. More specifically, the front tension control unit controls the operation of the take-up reel 5 to reduce the front tension when the measurement value of the full width measured by the full width measuring device 2 is smaller than a predetermined target value. . Thereby, the ratio of the plastic deformation in the moving direction of the flat copper strip 6 by the pressing roll 36 is reduced, and the ratio of the plastic deformation in the width direction of the flat copper strip 6 that is perpendicular to the moving direction is reduced. increase. On the other hand, the front tension control unit controls the operation of the take-up reel 5 to increase the front tension when the measurement value of the full width measured by the full width measuring device 2 is larger than a predetermined target value. Thereby, the ratio of the plastic deformation in the moving direction of the flat copper strip 6 by the pressing roll 36 is increased, and the ratio of the plastic deformation in the width direction of the flat copper strip 6 that is a direction perpendicular to the moving direction is increased. Reduce.

  When controlling the back tension, in the full width control process, the back tension of the flat copper strip 6 is feedback controlled according to the measured value of the full width to control the fluctuation of the full width within a predetermined range. To do. For example, the rear tension control unit controls the operation of the feed reel 4 to reduce the rear tension when the measurement value of the full width measured by the full width measuring device 2 is smaller than a predetermined target value. Thereby, the ratio of the plastic deformation in the moving direction of the flat copper strip 6 by the pressing roll 36 is reduced, and the ratio of the plastic deformation in the width direction of the flat copper strip 6 that is perpendicular to the moving direction is reduced. increase. On the other hand, the rear tension control unit controls the operation of the feed reel 4 to increase the rear tension when the measurement value of the full width measured by the full width measuring device 2 is larger than a predetermined target value. Thereby, the ratio of the plastic deformation in the moving direction of the flat copper strip 6 by the pressing roll 36 is increased, and the ratio of the plastic deformation in the width direction of the flat copper strip 6 that is a direction perpendicular to the moving direction is increased. Decrease.

  Furthermore, when controlling the rotation speed, in the full width control process, the fluctuation of the full width is controlled within a predetermined range by performing feedback control according to the measurement value of the full width obtained by measuring the rotation speed of the pressing roll 36. For example, the rotation speed control unit increases the rotation speed of the pressing roll 36 when the measurement value of the full width measured by the full width measuring device 2 is smaller than a predetermined target value. This is because when the volume of the flat copper strip 6 that is plastically deformed by one pressing roll 36 is reduced and the deformation speed is increased, the flat copper strip 6 that is perpendicular to the direction of movement of the pressing roll 36 is used. According to the experience of increasing the rate of plastic deformation in the width direction. On the other hand, the rotation speed control unit decreases the rotation speed of the pressing roll 36 when the measurement value of the full width measured by the full width measuring device 2 is larger than a predetermined target value. This is because when the volume of the flat copper strip 6 that is plastically deformed by one pressing roll 36 increases and the deformation speed becomes slow, the flat copper strip 6 that is perpendicular to the direction of movement of the pressing roll 36. According to the experience of reducing the rate of plastic deformation in the width direction.

(Effect of embodiment)
In the method for manufacturing a deformed cross-section copper strip according to the present embodiment, for example, the front tension (that is, the winding tension) is feedback controlled according to the measured value of the full width of the deformed cross-section copper strip 7 after rolling. By doing so, the full width of the irregular cross-section copper strip 7 can be kept within a predetermined allowable error range. Thereby, according to the manufacturing method of the irregular cross-section copper strip material which concerns on this Embodiment, the irregular cross-section copper strip material 7 which always has exact full width (for example, full width of product specification) can be manufactured.

  Moreover, since the manufacturing method of the irregular cross-section copper strip material which concerns on this Embodiment is not equipped with the slit process, generation | occurrence | production of the curvature of the irregular cross-section copper strip material 7 resulting from a slit process can be excluded, and high quality In addition to providing the modified cross-section copper strip material 7, the manufacturing cost can be reduced. Furthermore, in the method for manufacturing a deformed cross-section copper strip according to the present embodiment, the first V-shaped protrusion 12 and the second V-shaped protrusion 14 are provided in a line-symmetrical position with the central axis 20 as the symmetry axis. Since the flat plate-like V-shaped die 1 is used, the central axis of the flat copper strip 6 is aligned with the central axis 20 of the flat plate-like V-shaped die 1 so that a symmetrical shape is obtained in plan view. The deformed cross-section copper strip material 7 can be manufactured.

  Using the manufacturing apparatus described in the embodiment, a stepped irregular cross-section copper strip 7 according to the example was produced. First, the full width control process was performed by a method of controlling the forward tension. As the full width measuring instrument 2, a laser scan micrometer (manufactured by Mitutoyo Corporation, LSM-512S) was used. The forward tension was measured by installing a load cell (manufactured by Kyowa Denki Co., Ltd., model: LCX-A-5KN-ID) under the roller used in the sheet passing line. The forward tension was controlled by a recoiler motor inverter. The rear tension was kept constant using a tension control device (manufactured by Mitsubishi Electric Corporation). First, the relationship between the forward tension and the profile cross-section copper strip width was investigated. The result is shown in FIG.

  FIG. 4 shows the relationship between the front tension and the profile cross-section copper strip width.

  As can be seen from FIG. 4, the relationship between the increase in forward tension and the irregular cross-section copper strip width was a proportional relationship with high linearity. Based on this result, a control amount for controlling to a predetermined irregular cross-section copper strip width was calculated. And using the manufacturing apparatus demonstrated by embodiment, the full width of the copper strip in the state which wiped off rolling oil was measured after the rolling process (however, sampling time 100ms and it is an average value of 30 data). Based on the result, the front tension was feedback-controlled. Then, a stepped irregular cross-section copper strip with a total length of 1000 m was manufactured while performing feedback control.

  Samples were taken at each of the rolling process start position and the rolling process end position of the modified cross-section copper strip 7 produced in-line. Further, apart from the real-time measurement of the full width by the full width measuring device 2, the full width of the deformed cross section copper strip 7 at the rolling process start position, which is a sample collected using a digital caliper, and the deformed cross section copper strip at the end of the rolling process. The total width of the material 7 was measured. The value measured using the digital caliper was regarded as a true value, and the error rate of the measured value in the full width measuring device 2 was calculated. As the error rate, a value representing the absolute value of the difference between the measured value by the digital caliper and the measured value by the full width measuring instrument 2 as a percentage based on the measured value by the digital caliper was used. That is, the error rate is expressed by the following equation.

  Error rate (%) = | Measured value with digital caliper−Measured value with full width measuring instrument 2 | × 100 / Measured value with digital caliper

  Experiments for calculating such an error rate were performed three times in total. As a result, as shown in Table 1, the error rate was 0.96% at the end of the first round at the maximum, and both were less than 1%. In other words, it was shown that full width measurement with sufficiently practical high precision can be performed.

  While the embodiments of the present invention have been described above, the embodiments described above do not limit the invention according to the claims. In addition, it should be noted that not all the combinations of features described in the embodiments are essential to the means for solving the problems of the invention.

DESCRIPTION OF SYMBOLS 1 Flat disk-shaped die 2 Full width measuring device 3 Planetary rolling mill 4 Feeding reel 5 Take-up reel 6 Flat copper strip material 7 Profile cross-section copper strip material 7a Thick plate portion 7b Thin plate portion 10 Base 12 First V-shaped projection Part 12a First slope 12b Front end 12c Rear end 14 Second V-shaped protrusion 14a Second slope 14b Front end 14c Rear end 16 Groove part 20 Central axis 30 Axis 32 Rotor 34 Wheel-shaped rail 36 Press roll 38 Linear part

Claims (5)

A base having a base surface, a V-shaped protrusion provided on the base surface and formed in a V-shaped divergent shape from one end to the other end in plan view, and the V-shape Supply of strip material to supply a flat copper strip to a flat plate-like V-shaped die having a groove provided through the central region of the V-shaped projection from the one end of the projection to the other end. Process,
A pressing process for pressing the flat copper strip on the base surface provided with the V-shaped projections; and
The pressed plate-shaped copper strip is pulled out from the one end toward the other end, the thick plate portion formed in the portion of the plate-shaped copper strip that has passed through the groove, and the V-shape A rolling step of forming a deformed cross-section copper strip having a thin plate portion formed in a portion via a protrusion; and
A modified cross-section copper strip comprising a full-width control step of measuring the full width of the irregular cross-section copper strip and controlling the variation of the full-width of the irregular cross-section copper strip manufactured based on the measurement result within a predetermined range. Manufacturing method.   The full width control step controls the fluctuation of the full width within a predetermined range by performing feedback control on the forward tension in the drawing of the pressed flat copper strip material in accordance with the measured value of the full width. A method for producing a deformed cross-section copper strip according to 1.   The full width control step reduces the front tension when the measured value of the measured full width is smaller than a predetermined target value, and when the measured value of the full width is larger than the predetermined target value. The method for producing a deformed cross-section copper strip according to claim 2, wherein the feedback control for increasing the forward tension is executed.   In the full width control step, the fluctuation of the full width is controlled within a predetermined range by performing feedback control of the rear tension in the drawing of the flat copper strip according to the measured value of the full width. The manufacturing method of the irregular cross-section copper strip of description. In the pressing process, the flat copper strip is pressed against the base surface by a pressing roll,
2. The odd-shaped cross-section copper according to claim 1, wherein in the full width control step, the fluctuation of the full width is controlled within a predetermined range by performing feedback control on the rotation speed of the pressing roll according to the measured value of the full width. Manufacturing method of strip material.

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