JP5282683B2 - Drawing device and method for manufacturing wire - Google Patents

Abstract

Included are a wire supply part, a wire pulling part, a first capstan mechanism part and a second capstan mechanism part. The first capstan mechanism part includes a plurality of first capstans, a first rotation drive source and a first rotation transmission mechanism part that transmits the rotation drive force of the first rotation drive source to the respective first capstans, and the second capstan mechanism part includes a plurality of second capstans and a plurality of second rotation drive sources that rotatively drive the respective second capstans in an individually manner. Dies are provided between ones of the respective first capstans and the respective second capstans.

Description

  The present invention relates to a technique for drawing a wire.

  Conventionally, Patent Document 1 and Patent Document 2 disclose techniques for wire drawing.

  In Patent Document 1, a plurality of intermediate extraction capstans are divided into two or more blocks so that a plurality of intermediate extraction capstans are contained in one block, and a plurality of intermediate extraction capstans are provided by one drive motor for each block. The pulling capstan is driven.

  In Patent Document 2, a plurality of wire drawing units having a drive capstan and a capstan drive motor are disposed between the unwinding means and the winding means.

  In the wire drawing apparatus as described above, the degree of diameter reduction deformation of the wire is set corresponding to each capstan, and the wire is gradually reduced in diameter through a plurality of diameter reduction deformation processes. Yes. Specifically, dies corresponding to the degree of diameter reduction deformation are disposed between the capstans. Further, the pulling speed ratio of the capstan disposed so as to sandwich the die is set according to the degree of diameter reduction deformation by each die.

JP 11-47821 A JP 2005-103623 A

  By the way, when drawing a wire, it is necessary to appropriately set and change the degree of diameter reduction of the wire in accordance with the material of the bus wire to be processed, the finished finished wire diameter, and the like.

  However, in the technique disclosed in Patent Document 1, since a plurality of intermediate drawing capstans are rotationally driven by one drive motor for each block, it is difficult to change the setting of the degree of diameter reduction of the wire rod.

  On the other hand, in the technique disclosed in Patent Document 2, since all capstans are individually driven to rotate by a motor, the maintenance work becomes complicated.

  In view of this, the present invention makes it possible to easily cope with an adjustment change of the degree of diameter reduction deformation of the wire according to the material of the bus wire, the target finished wire diameter, etc. while simplifying the maintenance work. With the goal.

  In order to solve the above-mentioned problem, a wire drawing device according to a first aspect is a wire drawing device for drawing a wire, a wire supply unit for supplying the wire, a wire take-up unit for taking up the wire, and a plurality of wire drawing devices A first capstan; a first rotation drive source; and a first rotation transmission mechanism that transmits a rotation drive force of the first rotation drive source to the plurality of first capstans. And a plurality of second capstans, and a plurality of second capstans are individually driven to rotate between the first part and the wire take-up part and provided on the wire supply part side And a second capstan provided between the wire supply portion and the wire take-up portion and closer to the wire take-up portion than the first capstan mechanism portion. A mechanism unit, the plurality of first capstans and the plurality of second capstans; And a die plurality disposed between each of Yapusutan are those comprising a.

  The wire drawing apparatus according to the second aspect is the wire drawing apparatus according to the first aspect, wherein the diameters of the wire when passing through all of the plurality of second capstans are a plurality of types of finishes to be manufactured. Of the wire diameters, the finished wire diameter is the thinnest, and the diameter of the wire when passing through a part of the plurality of second capstans is one of a plurality of types of finished wire diameters to be manufactured. The drawing speed ratio before and after the plurality of second capstans is set so as to have one finished wire diameter.

  The wire drawing device according to a third aspect is the wire drawing device according to the first or second aspect, wherein a drawing speed ratio between front and rear with respect to each of the plurality of second capstans is on the wire take-up part side. It is set so that it gradually becomes smaller.

  The wire drawing apparatus according to the fourth aspect is the wire drawing apparatus according to any one of the first to third aspects, wherein the wire material to be drawn is an aluminum wire or an aluminum alloy wire, and has a diameter of 0. The drawing speed ratio between the plurality of first capstans is set so that the wire drawing of the wire having a thickness of 5 mm or less is performed while drawing the wire with the second capstan.

  The wire drawing apparatus according to a fifth aspect is the wire drawing apparatus according to any one of the first to fourth aspects, wherein at least one finishing capstan, one finishing rotary drive source, A finishing transmission mechanism for transmitting the rotational driving force of the finishing rotational drive source to the finishing capstan, and the second capstan mechanism between the wire supply part and the wire take-up part. Further, a finishing capstan mechanism provided on the wire take-up portion side is further provided.

  The manufacturing method of the strand which concerns on a 6th aspect is a manufacturing method of the strand which manufactures a strand by drawing a wire, Comprising: The wire supply part which supplies a wire, and the wire take-up part which takes up a wire And a plurality of first capstans, one first rotation drive source, and a first rotation transmission mechanism that transmits the rotation drive force of the first rotation drive source to the plurality of first capstans. A first capstan mechanism part provided between the wire supply part and the wire take-up part on the wire supply part side, a plurality of second capstans, and the plurality of second capstans, respectively. A plurality of second rotational drive sources that individually rotate and drive, a second capstan mechanism provided between the wire supply part and the wire take-up part and on the wire take-up part side; Between each of the plurality of first capstans and the plurality of second capstans A wire drawing device provided with a plurality of dies arranged, and the diameter of the wire when passing through all of the plurality of second capstans is the thinnest diameter among a plurality of types of finished wire diameters to be manufactured The finished wire diameter is such that the diameter of the wire material when passing through a part of the plurality of second capstans is one finished wire diameter of a plurality of kinds of finished wire diameters to be manufactured. By setting the rotation speed of the plurality of second capstans and changing the plurality of second capstans through which the wire passes to all or part of the strands, a plurality of types of finished wire diameters can be obtained. To manufacture.

  According to the wire drawing device according to the first aspect, for the first capstan mechanism, the rotational driving force of one first rotational drive source is transmitted to the plurality of first capstans via the first rotational transmission mechanism. Therefore, the maintenance work can be facilitated. For the second capstan mechanism, the rotational speeds of the plurality of second rotation sources are individually adjusted to change the rotational speeds of the plurality of second capstans, so that the front and rear of each second capstan The drawing speed ratio can be changed with. For this reason, it is possible to easily cope with an adjustment change of the degree of diameter reduction deformation of the wire rod according to the material of the bus wire, the finished finished wire diameter, and the like.

  According to the 2nd aspect, if a wire drawing process is performed using all the 2nd capstans, the strand which is a thin diameter can be manufactured. And if a wire drawing is performed by a part of several 2nd capstan, the strand which is one of the multiple types of finishing wire diameter used as manufacture object can be manufactured. For this reason, once the drawing speed ratio before and after the second capstan is set, it is possible to easily produce wire drawing having a plurality of types of finished wire diameters without changing the drawing speed ratio.

  According to the 3rd aspect, since the drawing speed ratio between front and back becomes small, so that a wire becomes thin, the cutting | disconnection of a wire can be prevented more reliably.

  In general, an aluminum wire or an aluminum alloy wire is difficult to cut with a diameter larger than 0.50 mm and easy to cut with a diameter smaller than 0.50 mm during wire drawing. Therefore, as in the fourth aspect, by performing wire drawing until the diameter reaches about 0.50 mm in the first capstan mechanism portion, efficient wire drawing with a fixed feed speed ratio can be performed. On the other hand, by drawing the second capstan to draw a wire having a diameter of 0.50 mm or less, the drawing speed is adjusted so that the aluminum wire or the aluminum alloy wire is difficult to cut. Yes.

  According to the fifth aspect, the first capstan mechanism portion performs wire drawing with a relatively large diameter reduction degree of deformation, and the second capstan mechanism portion extends with a diameter reduction degree of deformation adjusted according to the material and the like. Wire drawing can be performed with a plurality of capstans for finishing with a degree of diameter reduction suitable for finishing.

  According to the 6th aspect, even if it does not change the rotational speed of a 2nd capstan, the wire drawing which is a multiple types of finished wire diameter can be manufactured easily.

It is a schematic plan view which shows the wire drawing apparatus which concerns on embodiment. It is a schematic side view which shows a wire drawing apparatus same as the above. It is a figure which shows the example of a surface reduction rate setting. It is a figure which shows the location and the disconnection factor which led to a wire break. It is explanatory drawing which shows the example which performs a wire drawing process using a part of 2nd capstan. It is a schematic plan view which shows the wire drawing apparatus which concerns on a modification.

  Hereinafter, the wire drawing apparatus and the manufacturing method of a strand concerning an embodiment are explained. FIG. 1 is a schematic plan view showing a wire drawing device 20 according to the embodiment, and FIG. 2 is a schematic side view showing the wire drawing device 20.

  The wire drawing device 20 is a device for drawing the wire 10 so that the diameter of the wire 10 is reduced. The wire supply unit 22, a wire take-up unit 26, a first capstan mechanism unit 30, and a second capstan mechanism unit. 40 and a plurality of dies 60. In addition, the wire 10 is a general term including all before and after the wire drawing process and during the wire process, and the wire before the process may be distinguished from the bus wire 10a and the wire drawn after the process may be distinguished from the wire 10b. . The strand 10b is used alone or in a twisted form as a core wire of an electric wire.

  The wire rod supply unit 22 is configured to be able to supply the bus wire 10a. More specifically, the wire supply part 22 is configured such that the bus wire 10a is wound and accommodated on a reel-shaped member. The wire rod supply unit 22 is rotatably supported on the upstream side of a predetermined wire drawing line L, and the bus wire 10a can be drawn from the wire rod supply unit 22.

  The wire take-up unit 26 is configured to take up the strand 10b. More specifically, in the wire take-up section 26, a reel-like member capable of winding and housing the wire 10b is supported so as to be rotationally driven by a rotational drive source such as a motor. The wire take-up section 26 is disposed downstream of the wire drawing line L so that the wire 10b processed to the final finished wire diameter is taken up and accommodated by the main wire take-up section 26. It has become.

  In the present embodiment, a plurality (here, seven) of the wire rod supply unit 22 and the wire rod take-up unit 26 are provided so as to enable wire drawing of a plurality of (here, seven) bus wires 10a. But the twisting mechanism part which twists the some strand 10b in the downstream of the 2nd capstan mechanism part 40 may be provided. In this case, only one wire rod take-up portion that takes only one stranded wire may be provided.

  The first capstan mechanism portion 30 is provided between the wire rod supply portion 22 and the wire rod take-up portion 26 and on the wire rod supply portion 22 side, and a plurality of (here, eight) first capstans 32 (1 ), 32 (2),..., 32 (6), 32 (7), 32 (8), one first rotation drive source 34, and a first rotation transmission mechanism 36. .

  Each of the first capstans 32 (1), 32 (2), ..., 32 (6), 32 (7), 32 (8) is formed in a substantially disc shape or a substantially cylindrical shape, A circumferential groove around which the wire 10 can be wound is formed on the outer periphery. The circumferential grooves are formed according to the number of the wires 10 to be processed. Here, seven circumferential grooves are formed. Each of the first capstans 32 (1), 32 (2), ..., 32 (6), 32 (7), 32 (8) is drawn in this order from the upstream side to the downstream side. It arrange | positions so that it may rank with a space | interval along the processing line L, and it is rotatably supported around the rotating shaft of the substantially horizontal direction substantially orthogonal to the wire drawing processing line L, respectively. Then, the wire 10 is wound around the circumferential grooves of the first capstans 32 (1), 32 (2),..., 32 (6), 32 (7), 32 (8). By rotating and driving one capstan 32 (1), 32 (2),..., 32 (6), 32 (7), 32 (8), the wire rod 10 can be drawn at a drawing speed corresponding to the rotation speed. It is designed to be pulled out.

  The rotation axes of the first capstans 32 (1), 32 (2),..., 32 (6), 32 (7), 32 (8) are substantially vertical or substantially vertical. An axis along an oblique direction may be used.

  The first rotation drive source 34 is a motor such as an AC motor, and is configured to generate a rotation drive force.

  The first rotation transmission mechanism unit 36 applies the rotational driving force of the one first rotational driving source 34 to the first capstans 32 (1), 32 (2), ..., 32 (6), 32 (7 ), 32 (8). More specifically, the first rotation transmission mechanism 36 is connected to each first capstan 32 (1), 32 (2), ..., 32 (6), 32 (7), 32 (8). The drive shaft 36a and the speed change mechanism 36b for shifting and transmitting the rotational motion between the drive shaft 36a and the like are provided. The speed change mechanism 36b is configured by various mechanisms such as a plurality of gears, a pulley, and a transmission belt wound around the pulley, and by appropriately setting the gear diameter, the number of gear teeth, the pulley diameter, and the like, The rotary motion is transmitted at a gear ratio. Here, the rotational motion of the first rotational drive source 34 is transmitted to the first capstan 32 (8) on the downstream side at the same rotational speed, and the first capstan on the upstream side from the downstream side while increasing the speed sequentially. 32 (7), 32 (6), ..., 32 (2), 32 (1). Therefore, the rotational speed of each first capstan 32 (1), 32 (2),..., 32 (6), 32 (7), 32 (8) is the same as the rotational speed of the first rotational drive source 34. Each of the first capstans 32 (1), 32 (2),... Between the upstream side and the downstream side of the wire drawing line L (sometimes simply referred to as front-rear). , 32 (6), 32 (7), 32 (8) have a constant rotation speed ratio. In the present embodiment, the description will be made on the assumption that the diameters of the capstans are the same. Therefore, the fact that the front-rear rotational speed ratio is constant means that the front-rear drawing speed ratio is constant. ing. Here, the front / rear drawing speed ratio between the first capstans 32 (1), 32 (2),..., 32 (6), 32 (7), 32 (8) is fixed at a fixed value. Is set to a value. A more specific setting example of the drawing speed ratio will be described later.

  The second capstan mechanism 40 includes a plurality (here, seven) of second capstans 42 (9), 42 (10),..., 42 (13), 42 (14), 42 (15) And a plurality of second rotational drive sources 44, which are provided between the wire rod supply unit 22 and the wire rod take-up unit 26 and closer to the wire take-up unit 26 than the first capstan mechanism unit 30. . Of the second capstans 42 (9), 42 (10),..., 42 (13), 42 (14), 42 (15), the second capstan 42 (15) on the most downstream side of the wire supply line. ) May be called a finishing capstan.

  Each of the second capstans 42 (9), 42 (10),..., 42 (13), 42 (14), 42 (15) includes the first capstans 32 (1), 32 (2), ..., 32 (6), 32 (7), and 32 (8) are formed in a substantially disk shape or a substantially columnar shape, and a circumferential groove around which the wire 10 can be wound is formed. Is formed. Each of the second capstans 42 (9), 42 (10),..., 42 (13), 42 (14), 42 (15) is drawn in this order from the upstream side to the downstream side. It is rotatably arranged and supported so as to be arranged with a gap along L. Then, the wire 10 is wound around the circumferential grooves of the second capstans 42 (9), 42 (10),..., 42 (13), 42 (14), 42 (15). Two capstans 42 (9), 42 (10),..., 42 (13), 42 (14), 42 (15) are rotationally driven, so that the wire 10 is drawn at a drawing speed corresponding to the rotational speed. It is designed to be pulled out.

  The second rotation drive source 44 is a motor capable of adjusting the rotation speed, such as an AC motor, and the second capstans 42 (9), 42 (10), ..., 42 (13), 42 (14). ), 42 (15), a plurality (here, six) are provided. Each second rotation drive source 44 is separately connected to each second capstan 42 (9), 42 (10),..., 42 (13), 42 (14), 42 (15). Each second rotation drive source 44 is configured to individually rotate and drive each second capstan. Therefore, the rotational speeds of the second capstans 42 (9), 42 (10),..., 42 (13), 42 (14), 42 (15) are the rotational speeds of the second rotational drive sources 44. The second capstans 42 (9), 42 (10),..., 42 (13), 42 (by adjusting the rotational speed of each second rotational drive source 44. 14), 42 (15) before and after the rotation speed ratio can be adjusted. In addition, in this embodiment, since it demonstrates on the assumption that the diameter of each capstan is the same, being able to adjust the front-rear rotational speed ratio means that the front-rear drawing speed ratio can be adjusted. . Here, the drawing speed ratio between the front and rear of each of the second capstans 42 (9), 42 (10),..., 42 (13), 42 (14), 42 (15) is It is set so that it gradually decreases from the upstream side to the downstream side of the line processing line L (that is, it is set so that the speed difference gradually decreases). A specific adjustment setting example of each drawing speed ratio will be described later.

  By having the first capstan mechanism 30 and the second capstan mechanism 40 as described above, the first capstans 32 (1), 32 (2), ..., 32 (6) , 32 (7), 32 (8) and before and after, it can be a processing region where the drawing speed ratio is constant, and each second capstan 42 (9), 42 (10),. The drawing speed ratio between before and after 42 (13), 42 (14), and 42 (15) is involved (that is, including the relationship between the first capstan 32 (8) and the second capstan 42 (9)). Can be made a machining region.

  Further, a linear speed difference absorbing mechanism portion 70 having a pair of rollers 72 a and 72 b is provided between the second capstan mechanism portion 40 and the wire rod take-up portion 26. The linear speed difference absorbing mechanism unit 70 is also called a so-called dancer roller or the like, and is configured such that a movable roller 72b is supported so as to be able to move close to and away from one fixed roller 72a. The distance between the rollers 72a and 72b is adjusted in accordance with the difference in linear velocity between the second capstan 42 (15) and the wire rod take-up portion 26, so that the second capstan mechanism portion 40 and the wire rod take-up portion are adjusted. The slack of the wire 10 with respect to the wire 26 and the action of an excessive tensile force of the wire 10 are suppressed.

  The plurality of dies 60 are processing tools for reducing and deforming the diameter of the wire 10 so that the diameter of the wire 10 is reduced. The first capstans 32 (1), 32 (2), ..., 32 (6), 32 (7), 32 (8) and each second capstan 42 (9), 42 (10), ..., 42 (13), 42 (14), 42 (15) are detachably disposed. Has been. More specifically, the die 60 is a member formed of metal or the like, and has a diameter-reduced hole for passing the wire 10. Here, a plurality (seven in this case) of diameter-reduced holes are formed in parallel in accordance with the number of wires 10 to be processed. The diameter-reduced hole is formed in a through-hole shape that gradually decreases in diameter from the upstream side toward the downstream side along the processing line L. The opening diameter on the upstream side of the diameter-reduced hole is substantially the same as the diameter of the wire 10 guided to the die 60, and the opening diameter on the downstream side of the diameter-reduced hole is the purpose of the diameter-reducing process by the die 60. The diameter is substantially the same. When the opening area on the upstream side of the reduced diameter processing hole of the die 60 is S1, and the opening area on the downstream side is S2, the reduction rate of the opening area ((S1-S2) / S1) is referred to as the area reduction rate. This area reduction rate is set in accordance with the target diameter reduction degree of the die 60. A guide hole that guides the wire 10 to the diameter reducing hole may be formed on the upstream side of the diameter reducing hole. The reason why the dice 60 are detachably disposed is to perform removal, replacement, maintenance, and the like of the dice 60. In particular, when adjusting the drawing speed ratio between the front and rear by changing the speed of the second capstans 42 (9), 42 (10),..., 42 (13), 42 (14), 42 (15). Therefore, it is necessary to replace the die 60 with a reduction in area corresponding to this.

  Here, the relationship between the area reduction rate and the drawing speed ratio will be described. That is, when the diameter of the wire 10 is reduced by the die 60, the wire 10 is stretched and lengthened. For this reason, it is necessary to increase the drawing speed of the wire 10 on the downstream side of the upstream side of the die 60. Moreover, since the wire 10 is elongated longer as the degree of diameter reduction processing (area reduction rate) of the wire 10 by the die 60 increases, the downstream side with respect to the drawing speed on the upstream side of the die 60 increases as the area reduction rate increases. It is necessary to increase the drawing speed ratio. For example, in terms of the cross-sectional area of the wire 10, when the area reduction rate by the die 60 is “r”, the ratio of the drawing speed difference to the drawing speed on the downstream side across the die 60 (that is, the drawing speed on the upstream side). When V1 is the downstream drawing speed V2, (V2−V1) / V2) may be set to “r”. That is, if it is considered that each capstan part is processed with a predetermined degree of diameter reduction deformation, the area reduction rate of the die 60 is determined by design, and the drawing speed before and after each capstan correspondingly corresponds to this. The ratio is also decided to be one. That is, the setting and adjustment of the degree of diameter reduction deformation by each die 60 is synonymous with the setting and adjustment of the die area reduction rate, and the setting and adjustment of the drawing speed ratio before and after each capstan. explain.

  Further, the wire drawing device 20 includes a control unit 68. The control unit 68 is a general microcomputer including a CPU, a ROM, a RAM, and the like. The control unit 68 receives an on / off command for the first rotation drive source 34 and each second rotation drive source 44 and a rotation speed command for each second rotation drive source 44 via an input unit 68 a such as a switch. Further, the control unit 68 controls the on / off operation of the first rotation drive source 34 and each second rotation drive source 44 according to the command via a drive circuit (not shown), and also each second rotation drive source 44. To control the rotation speed. However, the rotation speed adjustment for each second rotation drive source 44 may be performed by individual setting for each second rotation drive source 44.

  Hereinafter, the operation of the wire drawing device 20 will be described with reference to a specific area reduction rate (%) for an aluminum wire or an aluminum alloy wire. FIG. 3 is a diagram showing an example of the area reduction rate setting. Here, an example is assumed in which an aluminum alloy bus 10a having a diameter of 1.100 mm is used as the bus. In FIG. 3, the left column shows the first capstans 32 (1), 32 (2),..., 32 (6), 32 (7), 32 (8) and the second capstan 42 (9), 42 (10),..., 42 (13), 42 (14), 42 (15) in parentheses (that is, caps arranged from the upstream side to the downstream side in the wire drawing line L) The middle row shows the diameter of the wire 10 wound around each capstan and pulled out, and the right row shows the area reduction rate of the die 60 on the upstream side of each capstan. Is shown. As described above, the area reduction rate indicates the degree of diameter reduction by the die 60 and indirectly indicates the drawing speed ratio by the capstan before and after the die 60 is sandwiched.

  As shown in the figure, between the first capstans 32 (1), 32 (2),..., 32 (6), 32 (7), 32 (8) in the first capstan mechanism 30. The area reduction rate is set to a fixed value of 20%. In other words, as the first rotation transmission mechanism portion 36, one having a reduction ratio (drawing speed ratio) and a gear ratio is used. In addition, the said area reduction rate is a setting value considered so that the wire drawing of the wire 10 having a diameter of 0.5 mm or less can be performed while the wire 10 is drawn by the second capstan 42 (9). But there is. As a result, the bus bar 10a having a diameter of 1.10 mm is gradually increased so that the diameter of the bus bar 10a is 0.98 mm to 0.87 mm, 0.78 mm, 0.70 mm, 0.62 mm, 0.56 mm, and 0.50 mm. Reduced diameter deformed. The wire 10 having a diameter of 0.50 mm is drawn by the die 60 between the capstan 32 (8) and the capstan 42 (9) while being drawn by the next second capstan 42 (9). The

  Here, the reason why the wire drawing of the wire 10 that has become 0.5 mm or less can be performed while the wire 10 is drawn by the second capstan 42 (9) will be described.

  FIG. 4 is a diagram showing a location where the wire has been broken when the inventors have made a trial and error of wire drawing under various conditions using various aluminum alloy wires as a base wire. In addition, the wire material used here is a so-called 1000 series aluminum alloy (especially 1050 to 1080), 5000 series aluminum alloy (especially 5154 to 5454, etc.), Al-Fe series, Al- It is an aluminum alloy such as Fe-Mg and Al-Mg. As shown in the figure, it can be seen that the disconnection occurs almost in the die portion processed to have a diameter of 0.5 mm or less. And if the area reduction rate is increased, it is considered that the possibility of disconnection increases due to factors such as an increase in drawing resistance and frictional heat due to increased speed. Therefore, the wire drawing in the stage where the wire 10 has a relatively large diameter is performed by the first capstans 32 (1), 32 (2),..., 32 (6) in the first capstan mechanism 30. 32 (7) and 32 (8) are performed with a surface reduction rate of a fixed value, while wire drawing when the wire 10 has a relatively small diameter (0.50 mm or less) By changing the second capstan 42 (9), 42 (10),..., 42 (13), 42 (14), 42 (15), the wire rod 10 can be changed. However, it is possible to manufacture by adjusting the area reduction rate so that it is difficult to cause disconnection.

  Also, the area reduction ratio is set to the first area reduction before and after corresponding to each of the second capstans 42 (9), 42 (10),..., 42 (13), 42 (14), 42 (15). It is set smaller than the area reduction rate between the first capstans 32 (1), 32 (2),..., 32 (6), 32 (7), 32 (8) in the capstan mechanism 30. At the same time, it is set so that it gradually decreases toward the wire take-up portion 26. That is, the drawing speed ratio corresponding to them is set so as to gradually decrease toward the wire take-up portion 26 side. It is experimentally determined how much the area reduction rate is to be made and at what rate it is gradually reduced in accordance with the material of the wire 10, the target diameter, and the like. That is, it is preferable to make the area reduction rate as large as possible in order to process with as few dies 60 as possible. On the other hand, if the area reduction ratio is increased, disconnection is likely to occur. Since the ease of disconnection varies depending on the material of the wire, the processing diameter, and the like, it is experimentally determined so that the area reduction rate can be set as large as possible within the range where there is no problem disconnection frequency.

  Further, here, each area reduction rate is extended through all the second capstans 42 (9), 42 (10),..., 42 (13), 42 (14), 42 (15). The diameter of the wire 10 when wire processing is performed is set to be the finest finished wire diameter among a plurality of kinds of finished wire diameters to be manufactured. In addition, the area reduction rate passes through a part of the plurality of second capstans 42 (9), 42 (10),..., 42 (13), 42 (14), 42 (15). (In other words, the remaining capstan is not wound with a wire, and the corresponding die is omitted.) The diameter of the wire 10 when the wire drawing is performed is a plurality of types of finished wire diameters to be manufactured. It is set to be one finished wire diameter. Here, an appropriate speed command value is given to the control unit 68 via the input unit 68a so as to obtain the above drawing speed ratio, and the speed command value is set and stored in the control unit 60. Each second rotation drive source 44 is driven and controlled according to the control command value.

  Here, the finished wire diameter of the wire 10b to be manufactured is assumed to be 0.42mm, 0.36mm, 0.34mm, 0.32mm, 0.30mm, assuming that it is used for the core wire of the wire to be manufactured. Suppose that

  The area reduction rate between the first capstan 32 (8) and the second capstan 42 (9) is 16%, and the area reduction rate between the second capstans 42 (9) and 42 (10) is 15%, the area reduction rate between the second capstans 42 (10), 42 (11) is 14%, the area reduction rate between the second capstans 42 (11), 42 (12) is 13%, The area reduction rate between the two capstans 42 (12) and 42 (13) is 12%, the area reduction rate between the second capstans 42 (13) and 42 (14) is 11%, and the second capstan 42 The area reduction ratio between (14) and 42 (15) is set to 10%. Then, the diameter of the wire 10 is 0.45 mm when it is pulled out by the second capstan 42 (9), is 0.42 mm when it is pulled out by the second capstan 42 (10), and the second 0.39 mm when pulled out by the capstan 42 (11), 0.36 mm when pulled out by the second capstan 42 (12), and pulled out by the second capstan 42 (13) It is 0.34 mm at the time point, 0.32 mm when it is pulled out by the second capstan 42 (14), and 0.30 mm when it is pulled out by the second capstan 42 (15). For this reason, when wire drawing is performed via all the second capstans 42 (9), 42 (10), ..., 42 (13), 42 (14), 42 (15), The strand 10b having a diameter of 0.30 mm that is the thinnest can be obtained. Further, the second capstan 42 (10), the second capstan 42 (12), the second capstan 42 (13), the second capstan 42 (14), the second capstan 42 (15). By the processing through each of the above, the wire 10b having a diameter of 0.42 mm, 0.36 mm, 0.34 mm, and 0.32 mm to be manufactured can be obtained.

  That is, when manufacturing the strand 10b with a diameter of 0.30, as shown in FIG.1 and FIG.2, the wire 10 is made up of all the first capstans 32 (1), 32 (2),. 32 (6), 32 (7), 32 (8) and all the second capstans 42 (9), 42 (10), ..., 42 (13), 42 (14), 42 (15) Wrap. Also, dies 60 are disposed between all of them, and the wire 10 is inserted through all the dies 60. And in this state, each 1st capstan 32 (1), 32 (2), ..., 32 (6), 32 (7), 32 (8) and each 2nd capstan 42 (9), 42 (10),..., 42 (13), 42 (14), 42 (15) are rotated at a rotational speed that provides a drawing speed ratio corresponding to the above-mentioned area reduction rate. Each actual rotational speed is determined according to the drawing speed ratio based on any one rotational speed. Usually, a speed that is as high as possible is selected as long as the cutting of the wire 10 does not occur at a predetermined frequency or more on the most downstream side where the linear speed becomes the fastest. Thereby, the wire 10 is sequentially compression-deformed by each die 60, and the strand 10b having a diameter of 0.30 mm is manufactured.

  For example, when manufacturing a strand having a diameter of 0.32 mm, the second capstans 42 (9), 42 (10),..., 42 (13), 42 as shown in FIG. A part of (14) and 42 (15) and a part of the dice 60 are omitted. More specifically, the wire 10 is allowed to pass without being wound around the second capstan 42 (14). Further, the die 60 disposed between the second capstans 42 (14) and 42 (15) is removed, and the second capstan 42 (13) and 42 (14) are disposed at that position. A die 60 is attached. Here, the second capstan 42 (14) in front of the second capstan 42 (15), not the second capstan 42 (15) at the most downstream side, is omitted because the second capstan 42 (15) at the most downstream side is finished. This is because a motor having a relatively large torque has been selected as the capstan for use.

  Even when manufacturing other strands 10b having diameters of 0.42 mm, 0.36 mm, and 0.34 mm, the second capstans 42 (9), 42 (10),..., 42 (13), 42 (14 ), 42 (15), by omitting one or more, it can be produced in the same manner as described above.

  Accordingly, the plurality of second capstans 42 (9), 42 (10),..., 42 (13), 42 (14), 42 (15) are temporarily set according to the material, the target diameter, and the like of the wire 10. ) Is set, all or part of the plurality of second capstans 42 (9), 42 (10),..., 42 (13), 42 (14), 42 (15) Depending on whether or not is used, the strands 10b having a plurality of types of finished wire diameters can be easily manufactured.

  Of course, according to the finished wire diameter, the rotational speed of the second capstan 42 (9), 42 (10), ..., 42 (13), 42 (14), 42 (15) is changed and adjusted, Also, the die 60 may be replaced.

  According to the wire drawing device 20 configured as described above, with respect to the first capstan mechanism unit 30, one first rotation drive source 34 is connected to the plurality of first capstans 32 via the first rotation transmission mechanism unit 36. (1), 32 (2), ..., 32 (6), 32 (7), and 32 (8) are transmitted to each other, so that the maintenance work is easier than when the motors are individually driven. Can be achieved. Moreover, about the 2nd capstan mechanism part 40, the rotational speed of the several 2nd rotational drive source 44 is adjusted separately, and each 2nd capstan 42 (9), 42 (10), ..., 42 ( 13), 42 (14), 42 (15) by individually changing the rotational speed, the second capstans 42 (9), 42 (10), ..., 42 (13), 42 (14) , 42 (15) can be changed before and after the drawing speed ratio of the wire 10 can be changed. For this reason, according to the material of the wire 10, the finishing wire diameter used as the objective, etc., it can respond easily to the adjustment change of the diameter reduction deformation degree of the wire 10.

  Further, since the first capstan mechanism portion 30 is set to a relatively large fixed area reduction rate, the wire rod 10 can be efficiently drawn when the wire 10 has a relatively large diameter. The number of dies 60 can be reduced, which contributes to downsizing and cost reduction of the apparatus.

  Further, the drawing speed ratio before and after the second capstans 42 (9), 42 (10),..., 42 (13), 42 (14), 42 (15) are involved is directed toward the downstream side. That is, it is set so that the smaller the wire 10 becomes, the smaller it becomes. In other words, the smaller the diameter of the wire 10 is, the smaller the degree of compression deformation by one die 60 is set. For this reason, the cutting | disconnection of the wire 10 can be prevented more reliably.

  FIG. 6 is a schematic plan view showing a wire drawing device 120 according to a modification. Note that the same components as those described in the above embodiment are denoted by the same reference numerals, description thereof will be omitted, and differences will be mainly described.

  In this modification, an example will be described in which the finishing capstan at the most downstream is set to a fixed drawing speed. The wire drawing device 120 includes a wire supply unit 22, a wire take-up unit 26, a first capstan mechanism unit 130, a second capstan mechanism unit 140, a finishing capstan mechanism unit 180, and a die 60. I have.

  Similar to the first capstan mechanism section 30, the first capstan mechanism section 130 is provided between the wire rod supply section 22 and the wire rod take-up section 26 and on the wire rod supply section 22 side. A plurality (three in this case) of first capstans 132 (1) corresponding to the capstans 32 (1), 32 (2), ..., 32 (6), 32 (7), 32 (8), 132 (2), 132 (3), one first rotational drive source 134 corresponding to the first rotational drive source 34, and a first rotational transmission mechanism 136 corresponding to the first rotational transmission mechanism 36. have. That is, the first capstan mechanism 130 has the number of first capstans 132 (1), 132 (2), 132 (3) and the number of rotation driving force transmission targets of the first rotation transmission mechanism 136. Except for the differences, the configuration is the same as that of the first capstan mechanism 30.

  Similar to the second capstan mechanism 40, the second capstan mechanism 140 is between the wire supply unit 22 and the wire take-up part 26 and is closer to the wire take-up part 26 than the first capstan mechanism 130. A plurality of (here, three) corresponding to the second capstans 42 (9), 42 (10),..., 42 (13), 42 (14), 42 (15). Second capstans 142 (4), 142 (5), 142 (6), and a plurality (four in this case) of second rotation drive sources 144 corresponding to the respective second rotation drive sources 44 are provided. Yes. That is, the second capstan mechanism part 140 is different from the second capstan 142 (4), 142 (5), 142 (6) in number, and the number of second rotational drive sources 144 in that the number of second capstans 142 (4), 142 (5), 142 (6) differs. The configuration is the same as that of the second capstan mechanism 40.

  The finishing capstan mechanism 180 pulls the wire 10 at a constant drawing speed. The finishing capstan mechanism 180 is between the wire supply unit 22 and the wire take-up unit 26 and takes up the wire more than the second capstan mechanism 140. A plurality of (three in this case) finishing capstans 182 (7), 182 (8), 182 (9), one finishing rotary drive source 182 and finishing rotation. And a finishing transmission mechanism 184 that transmits the rotational driving force of the driving source 182 to a plurality of finishing capstans 182 (7), 182 (8), and 182 (9). The plurality of (here, three) finishing capstans 182 (7), 182 (8), 182 (9) are the first capstans 132 (1), 132 (2), 132 (3). The finishing rotation drive source 182 has the same configuration as the first rotation drive source 134, and the finishing transmission mechanism 184 has the same configuration as the first rotation transmission mechanism 136. Accordingly, the drawing speed ratio between the finishing capstans 182 (7), 182 (8) and 182 (9) in the finishing capstan mechanism 180 is a fixed constant value. However, the number of finishing capstans 182 (7), 182 (8), 182 (9) needs to be the same as the number of first capstans 132 (1), 132 (2), 132 (3). Absent. Further, there may be one pulling capstan.

  In addition, the die 60 includes a plurality of first capstans 132 (1), 132 (2), 132 (3), a plurality of second capstans 142 (4), 142 (5), 142 (6), A plurality of finishing capstans 182 (7), 182 (8), and 182 (9) are disposed between the respective capstans.

  According to this wire drawing device 120, the first capstan mechanism portion 130 performs wire drawing with a relatively large constant diameter reduction degree, and the second capstan mechanism portion 140 is adjusted according to the material of the wire 10. The drawing process can be performed with a reduced diameter deformation degree, and the finishing capstan mechanism 180 can perform the drawing process with a reduced diameter closed longitude suitable for finishing. In particular, since finishing can be performed under certain conditions, there is an advantage that finishing quality is further stabilized.

  In the above-described embodiments and modifications, an example in which an aluminum wire or an aluminum alloy wire is assumed has been described. However, the present invention can also be applied to various types of wires 10. That is, the drawing speed ratio in the second capstan mechanism portions 40 and 140 may be experimentally set and adjusted according to the material of the wire 10, the processing diameter, and the like.

Although the description has been made on the assumption that the diameters of the capstans are the same, the diameters may be different. In this case, the drawing speed may be considered as a value obtained by adding the diameter to the rotation speed.

  Moreover, although the said embodiment demonstrated the case where the wire drawing line L was a straight line, it is not necessarily required, and the line bent in each capstan part or another guide roller part may be sufficient.

DESCRIPTION OF SYMBOLS 10 Wire material 20 Wire drawing apparatus 22 Wire material supply part 26 Wire material take-up part 30 1st capstan mechanism part 32 (1), 32 (2), ..., 32 (6), 32 (7), 32 (8) 1st 1 capstan 34 1st rotation drive source 36 1st rotation transmission mechanism part 40 2nd capstan mechanism part 42 (9), 42 (10), ..., 42 (13), 42 (14), 42 (15 ) Second capstan 44 Second rotation drive source 60 Die 120 Wire drawing device 130 First capstan mechanism 132 (1), 132 (2), 132 (3) First capstan 134 First rotation drive source 136 First One rotation transmission mechanism 140 Second capstan mechanism 142 (4), 142 (5), 142 (6) Second capstan 144 Second rotation drive source 180 Finishing capstan mechanism 182 (1), 182 2), 182 (3) capstan 182 finishing finishing rotation drive source 184 finishes transmission mechanism portion

Claims (6)

A wire drawing device for drawing a wire,
A wire supply section for supplying the wire,
A wire take-up section for taking up the wire,
A plurality of first capstans, a first rotation drive source, and a first rotation transmission mechanism that transmits a rotational drive force of the first rotation drive source to the plurality of first capstans, A first capstan mechanism provided between the wire supply unit and the wire take-up unit on the wire supply unit side;
A plurality of second capstans, and a plurality of second rotation driving sources for individually rotating the plurality of second capstans, between the wire supply unit and the wire take-up unit, A second capstan mechanism portion provided closer to the wire rod take-up portion than the first capstan mechanism portion;
A plurality of dies disposed between each of the plurality of first capstans and the plurality of second capstans;
A wire drawing device comprising: The wire drawing device according to claim 1,
The diameter of the wire when passing through all of the plurality of second capstans is the finest finished wire diameter among the plurality of types of finished wire diameters to be manufactured, and among the plurality of second capstans, The drawing speed ratio before and after the plurality of second capstans is set so that the diameter of the wire when passing through a part becomes one finished wire diameter of a plurality of kinds of finished wire diameters to be manufactured. The wire drawing device. The wire drawing device according to claim 1 or 2,
The wire drawing apparatus, wherein a drawing speed ratio between front and rear with respect to each of the plurality of second capstans is set so as to gradually decrease toward the wire drawing portion side. It is a wire drawing apparatus of any one of Claims 1-3,
The wire to be drawn is an aluminum wire or an aluminum alloy wire,
A wire drawing device in which a drawing speed ratio between the plurality of first capstans is set so that wire drawing of a wire having a diameter of 0.5 mm or less is performed while the wire is drawn by the second capstan. . It is a wire drawing apparatus of any one of Claims 1-4, Comprising:
Supplying the wire rod, having at least one finishing capstan, one finishing rotary drive source, and a finishing transmission mechanism for transmitting the rotational driving force of the finishing rotary drive source to the finishing capstan A wire drawing device further comprising a finishing capstan mechanism provided between the wire and the wire take-up part and provided closer to the wire take-up part than the second capstan mechanism. A manufacturing method of a strand for manufacturing a strand by drawing a wire,
A wire supply section for supplying the wire,
A wire take-up section for taking up the wire,
A plurality of first capstans, a first rotation drive source, and a first rotation transmission mechanism that transmits a rotational drive force of the first rotation drive source to the plurality of first capstans, A first capstan mechanism provided between the wire supply unit and the wire take-up unit on the wire supply unit side;
A plurality of second capstans, and a plurality of second rotation driving sources for individually rotating the plurality of second capstans, between the wire supply unit and the wire take-up unit, A second capstan mechanism provided on the wire take-up part side;
A wire drawing device comprising: a plurality of dies disposed between each of the plurality of first capstans and the plurality of second capstans;
The diameter of the wire when passing through all of the plurality of second capstans is the finest finished wire diameter among the plurality of types of finished wire diameters to be manufactured, and among the plurality of second capstans, The rotational speed of the plurality of second capstans is set so that the diameter of the wire when passing through a part becomes one finished wire diameter of a plurality of kinds of finished wire diameters to be manufactured,
The manufacturing method of the strand which manufactures the strand of several types of finishing wire diameters by changing the object of these 2nd capstans which the said wire rod passes through into all or a part.

Images