JP6382252B2 - Straightening device - Google Patents

Description

  The present invention relates to a straightening device.

  A wire made of metal such as copper wire is sometimes unwound from a drum and used for product processing. The wire wound around the drum may have curled wrinkles such as curl (bending along the drum's circumferential direction) or meandering (displacement in the drum's rotational axis direction), and subsequent processing may not work. This may cause defective products, so it is necessary to correct and straighten them.

  Patent Document 1 describes an example of a straightening device that performs such straightening, which applies bending in the horizontal direction and vertical direction when a wire is conveyed by a plurality of rolls. By bending the wire in the direction opposite to the bending curve of the wire rod by these rolls, the bending curve of the wire rod can be eliminated.

Japanese Patent Laid-Open No. 05-337582

  The straightening device of Patent Document 1 gives a horizontal bending when a wire is conveyed by a roll rotating around a vertical axis, and a vertical bending when conveying a wire by a roll rotating around a horizontal axis. However, there is a problem that the entire apparatus is large because of a complicated configuration using a large number of rolls.

  Thus, in the method of straightening using a roll, since the direction in which the wire is bent by the roll is limited, in order to suitably straighten the wire, a complicated process using a large number of rolls is required. In many cases, it was composed.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a straightening device or the like that can be properly straightened with a simple configuration.

The present invention for solving the above-described problems is a first configuration in which a wire rod disposed along a rotation axis direction provided in a rotating body that rotates around a rotation axis is held at a position eccentric from the rotation axis. a wire holding portion, on both sides of the first rotation axis direction of the wire holding portion, possess a second wire holding portion for holding the wire at a position corresponding to the rotation axis, the tension on the wire is In addition, while the wire rod is conveyed along the rotation axis direction, the rotating body is rotated, and while the rotating body rotates, the second wire rod holding portion reaches the first wire rod holding portion. kept path length of the wire is constant, with straightening device feeding length of the wire is characterized by 10 times or less der Rukoto least twice the wire diameter of the wire when the rotating body is rotated 1 is there.

  In the straightening device of the present invention, by rotating the rotating body with the wire held as described above, the wire can be uniformly bent in each direction during the rotation of the rotating body. Therefore, even if the wire has a bending crease in any direction, this can be solved by bending in the opposite direction, and the wire can be appropriately arranged with a simple configuration.

It is desirable that the first wire holding part can hold the wire at a plurality of positions having different eccentric distances from the rotation shaft. For example, the first wire holding part has a plurality of holes for passing the wire in a cross section orthogonal to the rotation axis, and the plurality of holes have different eccentric distances from the rotation axis.
As a result, the force applied to the wire rod during rotation of the rotating body can be adjusted depending on where the wire rod is held in the first wire rod holding portion, so that the wire rod is plastically deformed and does not return to the original state with the bending wrinkles. Can be.

Further, the straightening device of the present invention suitably applies a force to bend the wire rod to the wire rod by rotating the rotating body while carrying the tension to the wire rod as described above, and conveys the wire rod. However, the order can be continuously performed inline.

The first wire holding part is an eccentric fitting provided in the rotating body and having a hole at a position eccentric from the rotating shaft, and the second wire holding part is provided on the rotating shaft of the rotating body. A hole provided at a corresponding position is desirable.
Thereby, in order to eliminate the bending wrinkle of a wire, a wire can be hold | maintained in a suitable position with the structure of a simple rotary body.

  According to the present invention, it is possible to provide a straightening device or the like that can be properly trimmed with a simple configuration.

The figure which shows the outline of the copper wire processing system 1 in this invention The figure which shows the outline of the straightening apparatus 4 in this invention The view which looked at the rotary body 41 in this invention from the top Partial sectional view of the rotating body 41 in the vertical direction in the present invention The figure which shows the radial direction cross section of the rotary body 41 in this invention The figure explaining the straightening of the copper wire 20 in this invention The figure explaining the straightening of the copper wire 20 in this invention

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

(1. Copper wire processing system 1)
FIG. 1 shows an outline of a copper wire processing system 1 including a straightening device 4 according to an embodiment of the present invention. FIG. 1A is a diagram showing an outline of a planar configuration of the copper wire processing system 1, and FIG. 1B is a diagram showing a schematic configuration when FIG. 1A is viewed from the lower side of the figure. It is.

  The copper wire processing system 1 performs processing of a copper wire 20 (wire material). Specifically, the copper wire 20 sent out from the drum 2 is straightened and conveyed, and after soldering the copper strip 30 to the tip, the copper wire 20 is cut with a standard length and dispensed.

  The copper wire processing system 1 includes a drum 2, a pull-in guide 3, a straightening device 4, a copper wire feed drive unit 5, a center holding metal 6, a copper wire feed guide 7, a copper wire cutter 8, a reel 9, a copper strip feed drive unit. 10, a copper strip straightening bracket 11, a copper strip feed guide 12, a copper strip cutter 13, a solder device 14, a moving table 15, a heating / cooling device 16, a slide 17, a product receiver 18, and the like.

  A copper wire 20 is wound around the drum 2, and when the copper wire 20 is sent out, the drum 2 rotates around a horizontal rotation axis. The copper wire 20 is provided with a curl such as a curl (bending along the circumferential direction of the drum) or meandering (displacement in the direction of the rotation axis of the drum) when wound on the drum 2.

  The drawing-in guide 3 is for aligning the copper wire 20 fed from the drum 2 and drawing it into the straightening device 4. The pull-in guide 3 has a pair of left and right rolls 31 and 31 that rotate about a vertical axis, and a pair of upper and lower rolls 32 and 32 that rotate about a horizontal axis. The copper wire 20 is aligned by passing the copper wire 20 between the pair of left and right rolls 31 and 31 and between the pair of upper and lower rolls 32 and 32.

  The straightening device 4 straightens the copper wire 20 and eliminates bending wrinkles so as to straighten the copper wire 20. Details of the straightening device 4 will be described later.

  The copper wire feed drive unit 5 is a drive unit that applies necessary tension (tension in the length direction of the copper wire) to the copper wire 20 to send out and transport the copper wire 20. The copper wire feed driving unit 5 feeds and feeds the copper wire 20 with tension by driving and rotating one of the rolls 51 while holding the copper wire 20 between the upper and lower rolls 51 and 51.

  The center holding metal fitting 6 is for aligning the copper wire 20 when the copper wire 20 is conveyed to the copper wire delivery guide 7. The center holding metal fitting 6 has a hole (not shown) in the center, and the copper wire 20 is aligned by passing the copper wire 20 through the hole.

  The copper wire delivery guide 7 conveys the copper wire 20 along an internal guide (not shown). The copper wire 20 is conveyed until the tip reaches a predetermined position ahead of the copper wire delivery guide 7. Also, the copper wire 20 after processing is discharged from the copper wire delivery guide 7. In this example, the copper wire delivery guide 7 is provided in two places, and the copper wire cutter 8 is disposed in the exposed portion of the copper wire therebetween.

  On the other hand, a strip-shaped copper strip 30 used for processing the copper wire 20 is wound around the reel 9. The copper strip feed drive unit 10 is a drive unit for feeding and transporting the copper strip 30 from the reel 9 and has substantially the same configuration as the copper wire feed drive unit 5 described above. When the copper strip 30 is fed out, the reel 9 rotates around the horizontal rotation axis.

  The copper strip corrector 11 corrects the posture of the copper strip 30 and conveys it to the copper feed guide 12. The copper strip feed guide 12 transports the copper strip 30 along an internal guide (not shown).

  The copper strip cutter 13 is for cutting the tip of the copper strip 30 fed from the reel 9. The tip of the copper strip 30 cut by the copper strip cutter 13 is placed on the moving table 15.

  The solder device 14 applies semi-solid cream solder 40 (see FIG. 1B) from the solder supply unit 141 to the copper strip 30 on the moving table 15.

  The moving table 15 is moved by a drive unit (not shown) such as a motor to convey the cut copper strip 30 to a position below the tip of the copper wire 20, and then ascend, whereby the cream solder 40 is moved to the tip of the copper wire 20. To touch. In this embodiment, since the copper wire 20 is straightened, when the moving table 15 is lifted, the cream solder 40 is surely in contact with the tip of the copper wire 20, and these positions are caused by the bending wrinkles attached to the copper wire 20. There is no such thing as shifting.

  The heating / cooling device 16 melts the cream solder 40 by blowing hot air from the air blowing unit 161, and then cools and solidifies the cream solder 40 by blowing cold air from the air blowing unit 161. Thereby, the copper strip 30 is soldered to the copper wire 20.

  The said copper wire cutter 8 cut | disconnects the copper wire 20 by which the above process was performed with a fixed scale. The position of the copper wire cutter 8 is variable. For example, the copper wire cutter 8 can be arranged at a position indicated by a dotted line 8 'in FIGS.

  The cut copper wire 20 is delivered from the copper wire delivery guide 7 and falls from the slide 17 to the product receiver 18. Thereafter, a new copper wire 20 is fed out with tension applied by the copper wire feed driving unit 5 and conveyed until the tip of the copper wire 20 reaches the predetermined position. The straightening device 4 straightens the copper wire 20 continuously while the copper wire 20 is conveyed.

  In addition, control, such as conveyance of the copper wire 20 and the copper strip 30 demonstrated above, is implement | achieved using the sensor, control apparatus, etc. which are not shown in figure.

(2. Straightening device 4)
FIG. 2 is a diagram showing an outline of the straightening device 4. As shown in FIG. 2, the straightening device 4 includes a rotating body 41, a bearing 42, a drive unit 43, and the like. These parts are covered with a box-shaped cover when the straightening device 4 is in operation.

  The rotating body 41 performs the straightening of the copper wire 20 by rotating around the rotation axis in the horizontal direction. The rotating body 41 has a substantially columnar shape as a whole, and between both ends 411 and 411 in the rotation axis direction, a belt winding portion 412, an eccentric fitting mounting surface 413, an eccentric fitting 414 (first wire holding member) Part) etc. are provided. Details of these will be described later.

  The bearing 42 rotatably holds both end portions 411 and 411 of the rotating body 41.

  The drive unit 43 includes a pulley 430, an endless belt 431, and the like. The endless belt 431 is wound around the pulley 430 and the belt winding portion 412 of the rotating body 41, and the pulley 430 is rotated by a motor (not shown) to convey the belt 431 so that the rotating body 41 rotates. It has become.

  FIG. 3 is a view of the rotating body 41 of the straightening device 4 as viewed from above, and FIG. 4 is a partial cross-sectional view showing a vertical cross section along line AA in FIG. FIG. 5 is a diagram showing a radial cross section of the rotating body 41 along the line BB in FIG.

  In each figure, C indicates the rotation axis of the rotating body 41. The copper wire 20 is disposed along the rotation axis direction of the rotating body 41. Here, the rotation axis direction of the rotating body 41 corresponds to the left-right direction of FIGS. 3 and 4 and the normal direction of the paper surface of FIG.

  Both end portions 411 and 411 in the rotation axis direction of the rotating body 41 are rotatably held by the bearing 42 as described above. A tip metal fitting 411 a is provided at the tip of the rotating body 41.

  The belt winding portion 412 is provided in a substantially cylindrical shape along the circumferential direction of the rotating body 41, and has a flange portion 412 a protruding outward from the rotating body 41. As shown in FIG. 4, a groove 412b in the circumferential direction of the rotating body 41 is formed in the flange portion 412a, and the endless belt 431 is wound around the groove 412b.

  As shown in FIG. 4, the eccentric fitting mounting surface 413 is a flat surface provided along the rotation axis direction of the rotating body 41. As shown in FIG. 5, at a position corresponding to the eccentric fitting mounting surface 413, the radial cross section (excluding the eccentric fitting 414) orthogonal to the rotation axis C of the rotating body 41 is substantially circular with the rotation axis C as the center. , And a shape obtained by cutting a majority (see dotted line) including the rotation axis C with a straight line.

  The eccentric fitting 414 is erected on the eccentric fitting mounting surface 413. The eccentric fitting 414 has a hole 414a in the rotation axis direction at a position eccentric from the rotation axis C. By passing the copper wire 20 through the hole 414a, the copper wire 20 can be held at a position eccentric from the rotation axis C.

  The eccentric fitting 414 is formed with a plurality (three in this embodiment) of holes 414a having different eccentric distances from the rotation axis C, and these holes 414a allow a plurality of eccentric distances from the rotation axis C to be different. The copper wire 20 can be held at the position.

  On the other hand, on both sides in the rotation axis direction of the eccentric fitting mounting surface 413 provided with the eccentric fitting 414, a hole 410 (second wire holding portion) is formed at a position corresponding to the rotation axis C of the rotating body 41 as shown in FIG. Is provided. The hole 410 penetrates the rotation axis direction of the rotator 41 to the tip metal fitting 411 a at the tip of the rotator 41.

  The copper wire 20 is held at a position corresponding to the rotation axis C by passing through the hole 410 of the rotating body 41 on both sides of the eccentric metal fitting 414 in the rotation axis direction. On the other hand, the copper wire 20 is exposed to the outside at a position corresponding to the eccentric fitting mounting surface 413, and the copper wire 20 is passed through the hole 414a of the eccentric fitting 414 at this position, so that the eccentricity from the rotation axis C is maintained. Is done.

(3. Straightening of copper wire 20)
The straightening device 4 holds the copper wire 20 as described above while applying tension to the copper wire 20 by the copper wire feed driving unit 5 and transporting the copper wire 20 along the rotation axis direction of the rotating body 41 as described above. By rotating 41 around the rotation axis C, the bending wrinkle on the copper wire 20 is eliminated and straightened.

  FIG. 6 shows the arrangement of the eccentric metal fitting 414 and the copper wire 20 (hereinafter referred to as the eccentric metal fitting 414 or the like) when the rotating body 41 is rotated. Eight states are shown when rotated in the directions indicated by arrows R by 45 °, 90 °, 135 °, 180 °, 225 °, 270 °, and 315 °. In FIG. 6, the eccentric fitting 414 shows only the upper part at a position other than 0 °.

  In the present embodiment, while the tension is applied to the copper wire 20, the rotating body 41 rotates in the direction indicated by the arrow R, so that the positions of the eccentric fittings 414 and the like change in order as shown in these eight examples. To do.

  D of the figure shows the lower end in the radial cross section of the copper wire 20 as a reference point. The posture of the copper wire 20 passed through the hole 414a is maintained by sliding relative to the hole 414a when the rotating body 41 rotates. That is, the position of the reference point D at the lower end of the copper wire 20 remains the lower end and does not change even when the rotating body 41 rotates.

  Further, since the hole 410 of the rotating body 41 is located at a position corresponding to the rotation axis C, the path length L of the copper wire 20 from the hole 410 to the hole 414a of the eccentric fitting 414 while the rotating body 41 rotates (see FIG. 4). ) Does not change. Therefore, the copper wire 20 is not slackened or excessive tension is not applied to the copper wire 20 while the rotating body 41 is rotating.

  The arrows s0 °, s45 °, s90 °, s135 °, s180 °, s225 °, s270 °, and s315 ° in FIG. 6 are the 0 °, 45 °, 90 °, 135 °, and 180 ° described above for the eccentric fitting 414 and the like. It shows the force applied to the copper wire 20 when it is at the positions of 225 °, 270 °, and 315 °.

  For example, when the eccentric metal fitting 414 or the like is at a position of 0 °, an upward force is applied to the copper wire 20 in contact with the lower end of the hole 414a, and the copper wire 20 can be bent upward. When the eccentric metal fitting 414 or the like is at a position of 45 °, a force is applied to the copper wire 20 in contact with the lower right end of the hole 414a in the diagonally upward left direction, and the copper wire 20 is bent in the diagonally upward left direction. Can do.

  When the eccentric fitting 414 or the like is at a 90 ° position, a force is applied to the copper wire 20 in contact with the right end of the hole 414a in the left direction, and the copper wire 20 can be bent in the left direction. When the eccentric metal fitting 414 or the like is at a position of 135 °, a force is applied to the copper wire 20 in contact with the upper right end of the hole 414a in a diagonally downward left direction, and the copper wire 20 is bent in a diagonally downward left direction. it can. Further, when the eccentric metal fitting 414 or the like is at a position of 180 °, a force is applied downward to the copper wire 20 in contact with the upper end of the hole 414a, and the copper wire 20 can be bent downward.

  Thus, force can be applied from each direction of the radial cross section of the copper wire 20 while the rotating body 41 is rotating. FIG. 7A shows these forces rewritten on one copper wire 20. Thus, by applying a force from each direction of the radial cross section of the copper wire 20, bending in each direction can be uniformly applied to the copper wire 20. Therefore, no matter which direction the bending wrinkle is attached to the copper wire 20, it is possible to give a bending in the opposite direction, and it is possible to eliminate the bending wrinkle attached to the copper wire 20 and to straighten the copper wire 20. It is.

  For example, as shown in FIG. 7B, in the case of a copper wire 20 with an upward bend, as shown in FIG. 7B, when the eccentric fitting 414 or the like is at a position of 180 °, a downward force is applied to the bend The copper wire 20 can be bent downward in the opposite direction, and the copper wire 20 can be straightened as shown by the arrows in the figure.

  In order to prevent the bending wrinkles of the copper wire 20 from returning to its original state, it is necessary to apply a force to the copper wire 20 to such an extent that the copper wire 20 is plastically deformed. This force is applied to the hole 414a that holds the copper wire 20. It can be adjusted by changing the position. That is, the force applied to the copper wire 20 can be increased as it passes through the hole 414a having a larger eccentric distance from the rotation axis C. In the example of FIG. 6, the copper wire 20 is passed through the hole 414 a located farthest from the rotation axis C.

  Similarly, by changing the number of rotations of the rotating body 41 while feeding the copper wire 20 for a unit length, and adjusting the number of times the copper wire 20 is repeatedly bent in each direction when the copper wire 20 is conveyed, the copper wire 20 can be plastically deformed to prevent the bent wrinkles of the copper wire 20 from returning to the original state. In the present embodiment, the preferable feed pitch of the copper wire 20 when the rotating body 41 rotates (the feed length of the copper wire 20 during one rotation of the rotating body 41) depends on the wire diameter (diameter) of the copper wire 20. The preferable feed pitch range is not less than 2 times and not more than 10 times the wire diameter. Therefore, for example, when the diameter of the copper wire 20 is 2 mm, it is preferable that the rotational speed of the rotating body 41 during feeding the copper wire 20 by 1 m as the unit length is 50 or more and 250 or less. By setting the number of revolutions to 50 or more (the feed pitch is 10 times or less of the wire diameter), the copper wire 20 can be plastically deformed to suitably eliminate the bending wrinkles of the copper wire 20. On the other hand, when the rotational speed exceeds 250 (the feed pitch is less than twice the wire diameter), the work hardening of the copper wire 20 proceeds and there is a risk of hindering the subsequent processing.

  As described above, in the straightening device 4 of the present embodiment, the rotating body 41 is rotated while the copper wire 20 is held by the eccentric fitting 414 and the hole 410 of the rotating body 41 as described above. During the rotation of 41, the copper wire 20 can be uniformly bent in each direction without slackening the copper wire 20 or applying extra tension to the copper wire 20. Therefore, even if it is a case where the copper wire 20 has a bending wrinkle in any direction, this can be eliminated by bending in the opposite direction, and the copper wire 20 can be suitably arranged with a simple configuration.

  Moreover, since the eccentric metal fitting 414 can hold | maintain the copper wire 20 in the several position from which the eccentric distance from the rotating shaft C differs, it adds to the copper wire 20 at the time of rotation of the rotary body 41 by which position the copper wire 20 is hold | maintained. The force can be adjusted, and the copper wire 20 can be plastically deformed so that it does not return to the original state with the bending wrinkles.

  Further, the straightening device 4 suitably applies a force to bend the copper wire 20 to the copper wire 20 by rotating the rotating body 41 while transporting the copper wire 20 with tension. It is possible to continuously perform the in-line adjustment while conveying 20.

  Further, in the straightening device 4, the copper wire 20 is held by the eccentric fitting 414 and the hole 410 provided in the rotating body 41, so that the bending of the copper wire 20 can be eliminated and the simple rotating body 41 can be configured. Thus, the copper wire 20 can be held at a suitable position.

  However, the present invention is not limited to this. For example, the straightening device 4 of the present embodiment is not limited to the copper wire 20 and can be applied to the elimination of bending wrinkles of various wire materials having elastic-plastic characteristics, such as wire materials made of other metals. Moreover, although the example which uses the straightening apparatus 4 for the said copper wire processing system 1 was demonstrated, not only this but the straightening apparatus 4 can be applied in various processing systems.

  In the present embodiment, a plurality of holes 414a are formed in the eccentric metal fitting 414. However, the position of the hole 414a is designed in advance as an optimal position for applying a force to the copper wire 20 to the extent that the copper wire 20 is plastically deformed. The number of holes 414a may be one.

  Further, in the present embodiment, the rotating body 41 is rotated while the copper wire 20 is being transported. However, the transport of the copper wire 20 is temporarily stopped and the rotating body 41 is gripped on both sides of the rotating body 41 to rotate the rotating body. Operation such as rotating 41 is also possible. In addition, the shape and configuration of the rotating body 41 are not limited to those described above. For example, although the mechanism is complicated, it is possible to rotate only the position corresponding to the eccentric fitting 414, and the same effect can be obtained by this. In addition, instead of the eccentric fitting 414 or the hole 410 of the rotating body 41, other configurations that hold the copper wire 20 at a position eccentric from the rotation axis C or a position corresponding to the rotation axis C can be used.

  The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to such examples. It will be apparent to those skilled in the art that various changes or modifications can be conceived within the scope of the technical idea disclosed in the present application, and these are naturally within the technical scope of the present invention. Understood.

DESCRIPTION OF SYMBOLS 1; Copper wire processing system 2; Drum 3; Pull-in guide 4; Straightening device 5; Copper wire feed drive part 6; Center holding metal fitting 7; Copper wire feed guide 8; Copper wire cutter 9; Reel 10; Section 11; Copper strip straightening bracket 12; Copper strip feed guide 13; Copper strip cutter 14; Solder device 15; Moving table 16; Heating / cooling device 17; Slide table 18; 414a; hole 411; end 412; belt winding portion 413; eccentric fitting mounting surface 414; eccentric fitting

Claims (4)

A first wire holding unit that is provided on a rotating body that rotates around a rotation axis, and that holds the wire arranged along the rotation axis in a position eccentric from the rotation axis;
A second wire holding part that holds the wire in a position corresponding to the rotation axis on both sides in the rotation axis direction of the first wire holding part;
I have a,
While the tension is applied to the wire and the wire is transported along the direction of the rotation axis, the rotating body is rotated, and while the rotating body is rotated, the second wire holding unit rotates the first wire. The path length of the wire leading to the holding part is kept constant,
The rotating body is straightening device according to claim 10 fold der Rukoto less than twice the feed length of the wire is wire diameter of the wire at the time of one rotation.   The straightening device according to claim 1, wherein the first wire holding part is capable of holding the wire at a plurality of positions having different eccentric distances from the rotation shaft. The first wire holding part has a plurality of holes for passing the wire in a cross section orthogonal to the rotation axis,
The straightening device according to claim 2, wherein the plurality of holes have different eccentric distances from the rotation shaft . The first wire holding part is
An eccentric fitting provided in the rotating body and having a hole at a position eccentric from the rotating shaft,
The second wire holding part is
The straightening device according to any one of claims 1 to 3, wherein the straightening device is a hole provided at a position corresponding to the rotating shaft of the rotating body.

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