JP7352868B2 - Wire rod feeding device and mounting table - Google Patents

Description

The present disclosure relates to a wire feeding device and a mounting table.

Patent Document 1 discloses a wire rod feeding device for feeding out a wire rod wound into a coil shape. In Patent Document 1, the wire is stably fed out using a ring-shaped pedestal that guides the wire.

BACKGROUND ART A coil material in which large-diameter wire rods are wound in multiple layers in an aligned manner is used as a raw material for, for example, electric wires. Such a coil material is held on a mounting table so that its axis is oriented in the horizontal direction, and by pulling the wire material, the wire material may be drawn out in order from the inner circumferential side of the coil material. The drawn-out wire rod is subjected to a wire drawing process, etc.

Japanese Patent Application Publication No. 2005-297035

When the wire rod is unwound from the coil material, the wire rod is stretched while the circular ring of the wound wire rod gradually becomes smaller. At this time, the wires may become tangled. If the wire becomes tangled, the wire feeding line will stop until the wire is untangled. Although there is a possibility that entanglement of the wire can be suppressed by a mechanism for guiding the wire as in the configuration of Patent Document 1, such a mechanism is complicated and lacks versatility.

Therefore, one of the objects of the present disclosure is to provide a wire feeding device and a mounting table that can suppress the entanglement of the wire drawn from the coil material with a simple configuration.

The wire rod feeding device of the present disclosure includes:
A coil material in which wire material is wound in multiple layers in an aligned manner,
A wire rod feeding device comprising a mounting table that holds the coil material so that the axis of the coil material is oriented in a horizontal direction,
The coil material has a first end surface that is the end surface from which the wire material is drawn out,
The above-mentioned mounting stand is
a base portion on which the coil material is placed;
comprising a first pillar and a second pillar arranged in a position close to the first end surface and extending upward;
The first pillar is arranged on a first side across the axis,
The second pillar is arranged on a second side across the axis,
The distance from the axis to the second pillar is shorter than the distance from the axis to the first pillar,
The distance from the first end surface to the second pillar is longer than the distance from the first end surface to the first pillar.

The mounting table of the present disclosure includes:
A mounting table configured to place the coil material in order to unwind the wire material from a coil material in which the wire material is wound in multiple layers in an aligned manner,
a base portion having the following direction;
An X-axis direction along the horizontal plane A Y-axis direction along the horizontal plane and perpendicular to the X-axis direction A Z-axis direction perpendicular to the horizontal plane The axis of the coil material provided on the base part is oriented in the X-axis direction. a holding part configured to hold the coil material in a state in which the coil material is held;
comprising a first pillar and a second pillar provided at a position close to the holding part in the X-axis direction and extending upward;
The holding portion includes a first holding member and a second holding member located apart in the Y-axis direction and configured to sandwich the outer periphery of the coil material from both sides,
The first pillar is arranged on a first side with a center between the first holding member and the second holding member in the Y-axis direction,
The second pillar is arranged on a second side across the center in the Y-axis direction,
The distance from the center to the second pillar is shorter than the distance from the center to the first pillar,
The distance from the holding part to the second pillar is longer than the distance from the holding part to the first pillar.

The wire rod feeding device and mounting table of the present disclosure can suppress entanglement of the wire rod fed out from the coil material.

FIG. 1 is a schematic top view of a wire drawing line equipped with a wire rod feeding device shown in Embodiment 1. FIG. 2 is a schematic front view of the substrate holder shown in the first embodiment. FIG. 3 is a partial cross-sectional view of the wire rod feeding device shown in Embodiment 1. FIG. 4 is a partial cross-sectional view of the wire rod feeding device shown in the second embodiment. FIG. 5 is a partial cross-sectional view of a wire rod feeding device shown in Embodiment 3.

[Description of embodiments of the present disclosure]
The present inventor erected two pillars in front of the first end surface of the coil material on the side from which the wire material is drawn out, in order to stably draw out the wire material from the coil material arranged laterally. Specifically, the two pillars are arranged symmetrically across the axis of the coil material. These two pillars maintain the annular shape formed by the wire drawn out from each layer of the coil material in the vicinity of the first end surface, and gradually elongate the wire as it moves away from the first end surface. As a result, entanglement of the wire rods is suppressed. However, it has been found that the wire rods that are unwound from a particular layer of the coil material tend to become tangled. The inventors further investigated the reason and found that when the ring formed by the wire contacts the first pillar and rotates, the ring of the wire may not contact the second pillar. . It has become clear that unless the wire ring comes into contact with the second pillar, the rotation of the wire ring cannot be stopped, and as a result, the wire becomes tangled. Based on these findings, the present inventor completed the wire rod feeding device and mounting table shown below.

<1> The wire rod feeding device according to the embodiment includes:
A coil material in which wire material is wound in multiple layers in an aligned manner,
A wire rod feeding device comprising a mounting table that holds the coil material so that the axis of the coil material is oriented in a horizontal direction,
The coil material has a first end surface that is the end surface from which the wire material is drawn out,
The above-mentioned mounting stand is
a base portion on which the coil material is placed;
comprising a first pillar and a second pillar arranged in a position close to the first end surface and extending upward;
The first pillar is arranged on a first side across the axis,
The second pillar is arranged on a second side across the axis,
The distance from the axis to the second pillar is shorter than the distance from the axis to the first pillar,
The distance from the first end surface to the second pillar is longer than the distance from the first end surface to the first pillar.

The wire rod feeding device described above can suppress entanglement of the wire rods that are fed out from any layer of the coil material. In the wire rod feeding device, the second pillar is located closer to the axis of the coil material than the first pillar, and further from the first end surface of the coil material than the first pillar is. Therefore, even if the ring of the wire unwound from the coil material contacts the first pillar and rotates, the second pillar can stop the rotation of the ring of the wire. As a result, the tangle of the wire rod unwound from the coil material is suppressed, making it difficult for the unwinding line to stop.

Moreover, the first column and the second column in the feeding device according to the embodiment are simply rods, and are not provided with a complicated wire guide mechanism as in Patent Document 1. Complicated guide mechanisms are prone to breakdowns, and the wire feed line stops during repair and maintenance of the guide mechanism. On the other hand, since the first and second columns, which are simply bars, require almost no maintenance, the possibility that the feeding line will stop is very low.

<2> As one form of the wire rod feeding device according to the embodiment,
When the first end surface is viewed from the direction along the axis, the first pillar may be disposed on the winding direction side of the wire in the coil material.

For example, when the first end surface of the coil material is viewed from the axial direction, if the winding direction of the wire material is right-handed, the right side of the ring of the wire material is first wound before the left side of the ring of the wire material. It is easy to be pulled out to the outside of the end face. Therefore, if the winding direction of the wire rod is right-handed, if the first pillar is arranged on the right side, which is the same side as the winding direction, the ring of the wire rod is likely to be stopped by the first pillar. When the ring of the wire rod is abutted and fixed, the shape of the ring of the wire rod is easily maintained in the vicinity of the first end surface of the coil material. As a result, the wire rod is prevented from being suddenly stretched in the vicinity of the first end face, and the wire rod is less likely to be twisted.

<3> As one form of the wire rod feeding device according to the embodiment,
The distance from the axis to the first pillar is 70% or more and 100% or less of the inner radius of the coil material.

If the distance from the axis of the coil material to the first pillar is 70% or more and less than 100% of the inner radius of the coil material before the wire material is fed out, the ring of the wire material being fed out from the coil material will rest against the first pillar. easy to be Therefore, in the vicinity of the first end surface of the coil material, the annular shape of the wire material is easily maintained. As a result, it becomes difficult for the wire rod to be suddenly stretched in the vicinity of the first end surface, and twisting of the wire rod is easily suppressed.

<4> As one form of the wire rod feeding device according to the embodiment,
At least one of the first pillar and the second pillar may be a cylinder or an elliptical cylinder.

If the first pillar or the second pillar is a cylinder, there are no corners on the surface of the first pillar, so that the wire rod is less likely to be damaged when the wire rod unwound from the coil material comes into contact with the first pillar or the second pillar.

<5> As one form of the wire rod feeding device according to the embodiment,
The mounting table includes a third pillar located close to the first end surface and extending upward,
The third pillar is arranged closer to the second pillar than the axis of the coil material,
The distance from the axis to the third pillar is equal to the distance from the axis to the first pillar,
The distance from the first end surface to the third pillar may be equal to the distance from the first end surface to the first pillar.

The third pillar suppresses rotation of the ring of the wire when the wire is unwound from the outer layer of the coil material. Since the third pillar is located closer to the coil material than the second pillar, rotation of the annular wire material can be stopped at an early stage of rotation. As a result, the wire rod is stably drawn out from the coil material, and the entanglement of the wire rod is effectively suppressed. Moreover, since the third pillar stops the rotation of the ring of the wire rod at an early stage of rotation, it is possible to suppress the wire rod from violently colliding with the third pillar and being damaged.

<6> As one form of the wire rod feeding device of <5> above,
The third pillar may be a cylinder or an elliptical cylinder.

If the third pillar is a cylinder or an elliptical cylinder, when the wire rod unwound from the coil material comes into contact with the third pillar, the wire rod is less likely to be damaged.

<7> The mounting table according to the embodiment is
A mounting table configured to place the coil material in order to unwind the wire material from a coil material in which the wire material is wound in multiple layers in an aligned manner,
a base portion having the following direction;
An X-axis direction along the horizontal plane A Y-axis direction along the horizontal plane and perpendicular to the X-axis direction A Z-axis direction perpendicular to the horizontal plane The axis of the coil material provided on the base part is oriented in the X-axis direction. a holding part configured to hold the coil material in a state in which the coil material is held;
comprising a first pillar and a second pillar provided at a position close to the holding part in the X-axis direction and extending upward;
The holding portion includes a first holding member and a second holding member located apart in the Y-axis direction and configured to sandwich the outer periphery of the coil material from both sides,
The first pillar is arranged on a first side with a center between the first holding member and the second holding member in the Y-axis direction,
The second pillar is arranged on a second side across the center in the Y-axis direction,
The distance from the center to the second pillar is shorter than the distance from the center to the first pillar,
The distance from the holding part to the second pillar is longer than the distance from the holding part to the first pillar.

The above mounting table can stably hold the coil material with its axis oriented in the horizontal direction. The reason why the coil material is stably held is that the holding portions for holding the coil material sandwich the outer periphery of the coil material from both sides.

Moreover, the above-mentioned mounting table can effectively suppress entanglement of the wire drawn out from the coil material placed on the mounting table. As explained in the section of the wire rod unwinding device above, the tangle of the wire unwound from the coil material is suppressed even if the ring of the wire unwound from the coil material contacts the first pillar and rotates. This is because the second pillar can stop the rotation of the wire ring.

[Details of embodiments of the present disclosure]
Hereinafter, specific examples of a wire feeding device and a mounting table according to an embodiment of the present disclosure will be described based on the drawings. The same reference numerals in the figures indicate the same or corresponding parts. In embodiments of the present disclosure, the wire rod feeding device is simply referred to as a “feeding device”. Note that the present invention is not limited to these examples, but is indicated by the scope of the claims, and is intended to include all changes within the meaning and scope equivalent to the scope of the claims.

<Embodiment 1>
≪Overall composition≫
FIG. 1 shows a wire drawing line 1 in which two drawing devices 2A and 2B are arranged. The feeding devices 2A and 2B include a coil material 3 in which wire material 4 is wound in multiple layers in an aligned manner, and a mounting table 5 that holds the coil material 3. The feeding devices 2A and 2B in the wire drawing line 1 are arranged side by side in parallel, and when the feeding of the wire rod 4 from the feeding device 2A is completed, the wire rod 4 is continuously fed out from the feeding device 2B. A protection stand 7 is arranged in front of both the feeding devices 2A, 2B, and a straightening roller 8 is arranged further in front of the protection stand 7. A wire drawing machine 9 is arranged in front of the straightening roller 8. Here, the number of feeding devices provided in the wire drawing line 1 may be one, or may be three or more.

In this example, the axis 30 of the coil material 3 of the feeding device 2A and the axis 30 of the coil material 3 of the feeding device 2B are arranged in parallel. Further, a straightening roller 8 is arranged at a position midway between both axes 30. Unlike this example, both the feeding devices 2A and 2B may be arranged so that each axis 30 faces the stretching roller 8.

Hereinafter, each structure provided in the wire drawing line 1 of this example will be explained in detail.

≪Wire rod feeding device≫
The feeding devices 2A and 2B are devices that feed the wire 4 from the coil material 3. The feeding devices 2A and 2B of this example do not have a function of actively feeding out the wire rod 4, and the wire rod 4 is drawn out from the coil material 3 by being pulled by the wire drawing machine 9. That is, the feeding devices 2A and 2B of this example hold the coil material 3 so as not to move when the wire rod 4 is pulled by the wire drawing machine 9, thereby stabilizing the feeding of the wire rod 4.

[Coil material]
The coil material 3 is formed by winding the wire material 4 in multiple layers in an aligned manner. Therefore, the starting end of the wire 4 is arranged in the innermost layer of the coil material 3, and the terminal end of the wire 4 is arranged in the outermost layer of the coil material 3. The wire rod 4 constituting the coil material 3 is not particularly limited. The wire 4 has a diameter of, for example, 6 mm or more and 12 mm or less.

Of the two end surfaces of the coil material 3, the first end surface 31 on the side where the starting end of the wire rod 4 is arranged is the end surface on the side from which the wire rod 4 is drawn out. The first end surface 31 is arranged toward the side where the wire drawing machine 9 is arranged.

It is preferable that the number of layers of the coil material 3 is an even number. If the number of layers is an even number, the starting end and the terminal end of the wire 4 in the coil material 3 are arranged on the first end surface 31 side of the coil material 3. As shown in FIG. 1, the terminal end portion disposed at the outermost layer of the coil material 3 in the feeding device 2A passes in front of the second column 52 in the feeding device 2B, and the end portion of the coil material 3 in the feeding device 2B passes through the front of the second column 52 in the feeding device 2B. It is connected to the starting end located in the innermost layer. By connecting the terminal end of the coil material 3 of the feeding device 2A to the starting end of the coil material 3 of the feeding device 2B, when the feeding of the wire rod 4 from the feeding device 2A is completed, the wire rod 4 is continuously fed out from the feeding device 2B. It will be done.

[Placement stand]
In explaining the mounting table 5, reference will mainly be made to FIG. The mounting table 5 includes a base portion 5B, a holding portion 5H, a first pillar 51, a second pillar 52, and a third pillar 53. The base portion 5B has an X-axis direction, a Y-axis direction, and a Z-axis direction that are orthogonal to each other. In FIGS. 1 to 5, the X-axis direction, the Y-axis direction, and the Z-axis direction are indicated by the alphabets "X", "Y", and "Z" with arrows, respectively. The X-axis direction is a direction along a horizontal plane, and the axis 30 of the coil material 3 is arranged along this X-axis direction. The Y-axis direction is along a horizontal plane and is perpendicular to the X-axis direction. The Z-axis direction is a direction perpendicular to the horizontal plane.

- Base part The base part 5B supports the coil material 3 from below. The base portion 5B may be a flat plate, or may be a frame-shaped body formed by connecting a plurality of rods in a frame shape. The base portion 5B is preferably made of metal so that it can support the weight of the coil material 3. Examples of the metal include steel.

The base portion 5B of this example includes a positioning portion 50 that defines the position of the first end surface 31 of the coil material 3. The positioning part 50 in this example is a marker painted on the base part 5B. The positioning unit 50 specifies the position of the first end surface 31 of the coil material 3 even on the mounting table 5 on which the coil material 3 is not placed. Unlike this example, the positioning portion 50 may be an abutment member against which the first end surface 31 abuts. Examples of the abutting member include a protrusion or a bar extending from the base portion 5B in the Z-axis direction. In this case, the abutment member also functions as a holding portion 5H, which will be described later.

- Holding part The holding part 5H is provided on the base part 5B, and is configured to hold the coil material 3 with the axis 30 of the coil material 3 oriented in the X-axis direction. The holding part 5H includes a first holding member 58 and a second holding member 59 that are arranged at positions apart in the Y-axis direction. The first holding member 58 is arranged on the same side as the first column 51 with the axis 30 of the coil material 3 interposed therebetween. The second holding member 59 is arranged on the same side as the second pillar 52 with the axis 30 interposed therebetween. The coil material 3 is held between the first holding member 58 and the second holding member 59 by sandwiching the coil material 3 from the Y-axis direction. In other words, the space surrounded by the holding part 5H and the base part 5B constitutes a holding space for the coil material 3.

The first holding members 58 in this example are two rods arranged at positions apart in the X-axis direction. These two rods are connected by a rod-shaped connecting member 55 extending in the X-axis direction. The two bars are reinforced by the connecting member 55. As shown in FIG. 2, the two bars of the first holding member 58 extend upwardly away from the axis 30 of the coil material 3. Further, the second holding member 59 is also two bar members arranged at positions apart in the X-axis direction. These two rods are also connected and reinforced by a rod-shaped connecting member 55 extending in the X-axis direction. As shown in FIG. 2, the two bars of the second holding member 59 extend in a direction away from the axis 30 of the coil material 3 as they go upward. Since the distance between the holding members 58 and 59 widens upward, the coil material 3 can be easily placed from above. Further, the outer circumferential surface of the coil material 3 is less likely to be damaged. Unlike this example, both holding members 58 and 59 may extend along the Z-axis direction.

Here, the center 5Hc of the first holding member 58 and the second holding member 59 in the Y-axis direction corresponds to the position of the axis 30 of the coil material 3 in the Y-axis direction.

- First Pillar As shown in FIG. 3, the first pillar 51 is provided at a position close to the positioning part 50 in the X-axis direction, and extends upward. That is, the first pillar 51 is disposed at a position close to the first end surface 31 of the coil material 3 in the X-axis direction, and extends upward. The first pillar 51 may be in contact with the first end surface 31 or may be separated by a predetermined distance. That is, the distance L1 from the positioning portion 50 and the first end surface 31 to the first pillar 51 is 0 mm or more. It is preferable that the distance L1 is, for example, 10 times or less, more preferably 5 times or less, the diameter of the wire 4.

The first pillar 51 in this example extends in the Z-axis direction, that is, in the vertical direction. Unlike this example, the first pillar 51 may extend in a direction intersecting the base portion 5B. For example, like the first holding member 58, the first pillar 51 may be inclined in a direction away from the axis 30 as it extends in the vertical direction.

The first pillar 51 is arranged on the first side with the center 5Hc of the holding part 5H in the Y-axis direction interposed therebetween. That is, the first pillar 51 is arranged on the first side with the axis 30 of the coil material 3 interposed therebetween. The first side in this example is the right side when viewing the first end surface 31 from the direction along the axis 30 (see FIG. 2). The wire 4 of the coil material 3 of this example is right-handed when the first end surface 31 is viewed from the direction along the axis 30. When the winding direction of the wire 4 is right-handed, the right side of the ring 40 of the wire 4 is likely to be pulled out to the outside of the first end surface 31 earlier than the left side of the ring 40. Therefore, if the first pillar 51 is disposed on the winding direction side of the wire 4 when the first end surface 31 is viewed from the axial direction, the ring 40 of the wire 4 can be easily stopped by the first pillar 51. When the ring 40 of the wire 4 is abutted, the shape of the ring 40 is easily maintained in the vicinity of the first end surface 31 of the coil material 3. As a result, the wire rod 4 is prevented from being suddenly stretched in the vicinity of the first end surface 31, and the wire rod 4 is less likely to be twisted.

The distance W1 from the center 5Hc of the holding part 5H to the first column 51, that is, the distance W1 from the axis 30 of the coil material 3 to the first column 51, is selected according to the inner diameter and outer diameter of the coil material 3. For example, the distance W1 is preferably 60% or more and 100% or less of the inner radius of the coil material 3 before the wire material 4 is paid out. The inner radius is half the inner diameter of the coil material 3. If the distance W1 is within the above range, the ring 40 of the wire rod 4 unwound from the coil material 3 is likely to come into contact with the first pillar 51. Therefore, in the vicinity of the first end surface 31 of the coil material 3, the shape of the ring 40 of the wire material 4 is easily maintained. As a result, the wire rod 4 is prevented from being suddenly stretched in the vicinity of the first end surface 31, and the wire rod 4 is less likely to be twisted. A more preferable distance W1 is 65% or more and 75% or less of the inner radius of the coil material 3.

-Second Pillar The second pillar 52 is provided at a position close to the positioning section 50 in the X-axis direction, and extends upward. That is, the second pillar 52 is disposed close to the first end surface 31 of the coil material 3 and extends upward. However, the distance L2 from the positioning part 50 to the second pillar 52 is longer than the distance L1 from the positioning part 50 to the first pillar 51. That is, the distance L2 from the first end surface 31 of the coil material 3 to the second pillar 52 is longer than the distance L1 from the first end surface 31 to the first pillar 51. For example, the distance L2 is 10% or more and 20% or less of the inner diameter of the coil material 3. A more preferable distance L2 is 15% or more and 17% or less of the inner diameter of the coil material 3.

The second pillar 52 is arranged on the second side with the center 5Hc in the Y-axis direction interposed therebetween. That is, the second pillar 52 is arranged on the second side with the axis 30 of the coil material 3 interposed therebetween. The second side in this example is the left side when viewing the first end surface 31 from the direction along the axis 30 (FIG. 2). Therefore, the first pillar 51 and the second pillar 52 are arranged on opposite sides of the axis 30. However, the distance W2 from the center 5Hc to the second pillar 52 is shorter than the distance W1 from the center 5Hc to the first pillar 51. That is, the distance W2 from the axis 30 of the coil material 3 to the second column 52 is shorter than the distance W1 from the axis 30 of the coil material 3 to the first column 51. For example, the distance W2 is preferably 25% or more and 45% or less of the inner radius of the coil material 3. A more preferable distance W2 is 30% or more and 40% or less of the inner radius of the coil material 3. The second pillar 52 arranged at the above-mentioned position has a function of stopping the rotation of the ring 40 of the wire 4 when it contacts the first pillar 51 and rotates.

-Third Pillar The third pillar 53 is provided at a position close to the positioning part 50 in the X-axis direction, and extends upward. That is, the third pillar 53 is arranged at a position close to the first end surface 31 of the coil material 3 and extends upward.

The distance L3 from the positioning part 50 to the third pillar 53 in the X-axis direction is equal to the distance L1 from the positioning part 50 to the first pillar 51 in the X-axis direction. That is, the distance L3 from the first end surface 31 of the coil material 3 to the third pillar 53 is equal to the distance L1 from the first end surface 31 to the first pillar 51.

The third pillar 53 is arranged on the second side with the center 5Hc in the Y-axis direction interposed therebetween. That is, the third pillar 53 is arranged on the second side with the axis 30 of the coil material 3 interposed therebetween. Further, the distance W3 from the center 5Hc to the third pillar 53 is equal to the distance W1 from the center 5Hc to the first pillar 51. That is, the distance W3 from the axis 30 of the coil material 3 to the third column 53 is equal to the distance W1 from the axis 30 to the first column 51. Simply put, the third pillar 53 is located in a line-symmetrical position with the first pillar 51 with the axis 30 in between.

...Material of Columns The first column 51, the second column 52, and the third column 53 are preferably made of a material that will not be easily damaged even if the ring 40 of the wire rod 4 collides with them. Examples of such materials include steel.

...Cross-sectional shape of columns The cross-sectional shapes of the first column 51, second column 52, and third column 53 are not particularly limited. However, the cross-sectional shape of each pillar 51, 52, 53 is preferably a shape without corners, such as a circle or an ellipse. If each column 51, 52, 53 is a cylinder or an elliptical column, the surface of each column 51, 52, 53 has no corners, so when the wire 4 comes into contact with each column 51, 52, 53, the wire 4 is damaged. can be restrained from doing so.

...Column Thickness The equivalent circular diameters of the cross sections of the first column 51, the second column 52, and the third column 53 are determined according to the diameter of the wire 4. If the diameter of the wire 4 is 6 mm or more and 12 mm or less, the equivalent circle diameter of each pillar 51, 52, 53 is preferably 70 mm or more and 120 mm or less, for example. Here, the circle equivalent diameter of the cross section is the diameter of a circle having an area equal to the area of the cross section.

...Column Length The length of the first column 51, second column 52, and third column 53 in the Z-axis direction is preferably equal to or longer than the upper end of the inner peripheral surface of the coil material 3 in the Z-axis direction. If each of the pillars 51, 52, 53 has such a length, the ring 40 of the wire 4 can be easily stopped by each of the pillars 51, 52, 53. There is no particular upper limit to the length of each pillar 51, 52, 53 in the Z-axis direction. As shown in FIG. 2, the length of each column 51, 52, 53 in the Z-axis direction of this example reaches a position slightly higher than the upper end of the coil material 3 in the Z-axis direction. Considering the height of the installation space of the feeding devices 2A, 2B, the length of each pillar 51, 52, 53 in the Z-axis direction is the same as the upper end of the outer peripheral surface of the coil material 3 in the Z-axis direction, or The following may be sufficient.

...Others The first pillar 51, second pillar 52, and third pillar 53 of this example are provided on the base portion 5B. Unlike this example, each of the pillars 51, 52, and 53 may be provided on the floor surface of the wire drawing line on which the base portion 5B is placed.

[Feeding state of wire rod from the feeding device]
The wire rod 4 unwound from the coil material 3 passes between the first column 51 and the second column 52, as shown in FIG. 2, and is supplied to the straightening roller 8 of FIG. As shown in the partial cross-sectional view of FIG. 3, the wire rod 4 is unraveled sequentially from the inner layer side of the coil material 3. The ring 40 formed by the wire 4 becomes gradually smaller in the direction of feeding.

≪Protection stand≫
As shown in FIG. 1, the protection stand 7 prevents the wire rod 4 unwound from the coil material 3 from falling onto a floor surface located at a lower position than the coil material 3 and from twisting the wire rod 4. Further, the wire rod 4 is prevented from coming into contact with the floor surface and being damaged. The protection stand 7 is made of a material whose hardness is lower than that of the wire rod 4. For example, the protection stand 7 is a wooden stand.

≪Stretching roller≫
The straightening roller 8 is a member for straightening the wire rod 4 and supplying it to the wire drawing machine 9. The vertical roller 8 is composed of, for example, a plurality of cylindrical rollers extending in the vertical direction. The straightening roller 8 of this example includes three cylindrical rollers 81, 82, and 83. The cylindrical rollers 81, 82, 83 are configured to be rotatable around the Z axis. The cylindrical roller 81 and the cylindrical roller 82 are located apart from each other in the direction from the straightening roller 8 toward the wire drawing machine 9, that is, in the direction in which the wire rod 4 is pulled. The cylindrical roller 83 is located between the cylindrical roller 81 and the cylindrical roller 82 which are arranged in a direction parallel to the axis 30, and at a position away from the cylindrical rollers 81 and 82 in a direction perpendicular to that direction. By adjusting the distance between the cylindrical rollers 81 and 82 and the cylindrical roller 83, the feeding of the wire 4 is stabilized.

≪Effect of feeding device≫
As shown in FIG. 3, the ring 40 of the wire rod 4 unwound from the first end surface 31 of the coil material 3 first comes into contact with the first column 51. When the ring 40 contacts the first pillar 51 and rotates around the Z axis, the second pillar 52 stops the rotation of the ring 40. As a result, entanglement of the wire 4 due to rotation of the ring 40 is suppressed.

The third pillar 53 mainly suppresses rotation of the ring 40 of the wire 4 when the wire 4 is fed out from the outer layer of the coil material 3 . Since the third pillar 53 is located closer to the coil material 3 than the second pillar 52, the rotation of the ring 40 of the wire material 4 can be stopped at an early stage of rotation. As a result, the wire rod 4 is stably fed out from the coil material 3, and entanglement of the wire rod 4 is effectively suppressed. Further, since the third pillar 53 stops the rotation of the ring 40 of the wire 4 at an early stage of rotation, it is possible to prevent the wire 4 from violently colliding with the third pillar 53 and being damaged.

≪Test Example 1≫
Test Example 1 in which the influence of the first pillar 51 and second pillar 52 provided on the mounting table 5 on stable feeding of the wire rod 4 was investigated will be described below.

For the test, wire drawing line A and wire drawing line B were constructed. The wire drawing line A has the same configuration as the wire drawing line 1 of the first embodiment. On the other hand, the wire drawing line B has a configuration in which the second pillar 52 is removed from the wire drawing line A. These wire drawing lines A and B were operated for 6 months, and the frequency with which the wire rods 4 in the wire drawing lines A and B became entangled was investigated. In addition, the state of the ring 40 of the wire rod 4 near the first end surface 31 of the coil rod 3 on the wire drawing lines A and B was photographed as a video, and the cause of the entanglement of the wire rod 4 was identified.

The configuration of the coil material 3 used in wire drawing line A and wire drawing line B is as follows.
・Wire rod 4...diameter 8mm
・Winding direction of wire material 4: right-handed winding ・Number of layers: 36 layers ・Inner diameter of coil material 3: 600 mm
・Outer diameter of coil material 3…1200mm

The configuration of the first pillar 51 in the wire drawing lines A and B is as follows.
・Shape…Cylinder・Diameter…70mm
- Distance L1 from the first end surface 31 of the coil material 3 to the first pillar 51...0 mm
- Distance W1 from the axis 30 of the coil material 3 to the first pillar 51...210 mm

The configuration of the second pillar 52 in the wire drawing line A is as follows.
・Shape…Cylinder・Diameter…70mm
- Distance L2 from the first end surface 31 of the coil material 3 to the second pillar 52...120 mm
- Distance W2 from the axis 30 of the coil material 3 to the second pillar 52...90 mm

The configuration of the third pillar 53 in the wire drawing lines A and B is as follows.
・Shape…Cylinder・Diameter…70mm
- Distance L3 from the first end surface 31 of the coil material 3 to the third pillar 53...0 mm
- Distance W3 from the axis 30 of the coil material 3 to the third pillar 53...210 mm

As a result of the six-month test, no entanglement of the wire rod 4 occurred on the wire drawing line A. When checking the video taken during the test, it was found that on the wire drawing line A, the wire rod 4 was drawn out while the diameter of the ring 40 gradually became smaller without the shape of the ring 40 of the wire rod 4 being significantly deformed.

On the other hand, on wire drawing line B, entanglement of wire rod 4 occurred 6.7 times per month. The tangles of the wire rods 4 occurred when the wire rods 4 of the fourth to tenth layers were fed out, but did not occur when the wire rods of other layers were fed out. When the inventor checked the video taken during the test, it was found that the ring 40 of the wire rod 4 fed out from the fourth to tenth layers rotated to the first column 51, causing the wire rod 4 to become tangled.

Here, the reason why the ring 40 of the wire rod 4 did not rotate when the wire rods 4 of the first to third layers were fed out on the wire drawing line B was because the diameter of the ring 40 of the wire rod 4 was small, and the wire rod 4 It is presumed that this is because it can be easily stretched without becoming tangled. On the other hand, the reason that wire rotation did not occur when the wire rods 4 of the 11th to 36th layers were fed out was because the diameter of the ring 40 of the wire rod 4 was large and the ring 40 of the wire rod 4 was stopped against the third pillar 53. It is presumed that this is because

From the results of Test Example 1, the effectiveness of the second pillars 52 in suppressing the entanglement of the wire rod 4 was confirmed.

<Embodiment 2>
In Embodiment 2, a feeding device 2C having a configuration different from Embodiment 1 will be described based on FIG. 4.

The feeding device 2C of this example includes a first column 51 and a second column 52, but does not include a third column 53. The configuration and arrangement of the first pillar 51 and the second pillar 52 in the second embodiment are the same as in the first embodiment.

In the feeding device 2C of this example as well, the rotation of the ring 40 of the wire rod 4 is suppressed, and as a result, the entanglement of the wire rod 4 is suppressed. The feeding device 2C of this example is lightweight because it does not include the third pillar 53.

<Embodiment 3>
In Embodiment 3, a feeding device 2D having a different configuration from Embodiment 1 will be described based on FIG. 5.

Depending on the direction in which the wire rod 4 is unwound from the coil material 3 and the unwinding conditions of the wire rod 4 such as the unwinding speed of the wire rod 4, it may be preferable to arrange the first column 51 on the opposite side to the winding direction of the wire rod 4. . For example, in the feeding device 2D shown in FIG. 5, when the first end surface 31 of the coil material 3 is viewed from the It is located on the left side. In FIG. 5, the first pillar 51 is arranged below the axis 30 in the drawing. On the other hand, the second pillar 52 and the third pillar 53 are arranged on the right side of the axis 30 when looking at the first end surface 31 from the X-axis direction. In FIG. 5, the second pillar 52 and the third pillar 53 are arranged above the axis 30 in the drawing.

Also in the feeding device 2D of this example, the third pillar 53 may not be provided.

1 wire drawing lines 2A, 2B, 2C, 2D feeding device 3 coil material 30 axis, 31 first end surface 4 wire rod 40 ring 5 mounting table 5B base part, 5H holding part, 5Hc center 50 positioning part, 51 first pillar, 52 second pillar, 53 third pillar 55 connecting member, 58 first holding member, 59 second holding member 7 protection stand 8 straightening roller 81, 82, 83 cylindrical roller 9 wire drawing machine L1, L2, L3, W1, W2, W3 distance

Claims (7)

A coil material in which wire material is wound in multiple layers in an aligned manner,
A wire rod feeding device comprising a mounting table that holds the coil material so that the axis of the coil material is oriented in a horizontal direction,
The coil material has a first end surface that is the end surface from which the wire material is drawn out,
The above-mentioned mounting stand is
a base portion on which the coil material is placed;
comprising a first pillar and a second pillar arranged in a position close to the first end surface and extending upward;
The first pillar is arranged on a first side across the axis,
The second pillar is arranged on a second side across the axis,
The distance from the axis to the second pillar is shorter than the distance from the axis to the first pillar,
The distance from the first end surface to the second pillar is longer than the distance from the first end surface to the first pillar.
Wire rod feeding device. The wire rod feeding device according to claim 1, wherein the first pillar is arranged on the winding direction side of the wire rod in the coil material when the first end surface is viewed from the direction along the axis. The wire rod feeding device according to claim 1 or 2, wherein the distance from the axis to the first pillar is 60% or more and 100% or less of the inner radius of the coil material. The wire rod feeding device according to any one of claims 1 to 3, wherein at least one of the first pillar and the second pillar is a cylinder or an elliptical cylinder. The mounting table includes a third pillar located close to the first end surface and extending upward,
The third pillar is arranged closer to the second pillar than the axis of the coil material,
The distance from the axis to the third pillar is equal to the distance from the axis to the first pillar,
The wire rod feeding device according to any one of claims 1 to 4, wherein the distance from the first end face to the third pillar is equal to the distance from the first end face to the first pillar. The wire feeding device according to claim 5, wherein the third pillar is a cylinder or an elliptical cylinder. A mounting table configured to place the coil material in order to unwind the wire material from a coil material in which the wire material is wound in multiple layers in an aligned manner,
a base portion having the following direction;
An X-axis direction along the horizontal plane A Y-axis direction along the horizontal plane and perpendicular to the X-axis direction A Z-axis direction perpendicular to the horizontal plane The axis of the coil material provided on the base part is oriented in the X-axis direction. a holding part configured to hold the coil material in a state in which the coil material is held;
comprising a first pillar and a second pillar provided at a position close to the holding part in the X-axis direction and extending upward;
The holding portion includes a first holding member and a second holding member located apart in the Y-axis direction and configured to sandwich the outer periphery of the coil material from both sides,
The first pillar is arranged on a first side with a center between the first holding member and the second holding member in the Y-axis direction,
The second pillar is arranged on a second side across the center in the Y-axis direction,
The distance from the center to the second pillar is shorter than the distance from the center to the first pillar,
The distance from the holding part to the second pillar is longer than the distance from the holding part to the first pillar.
Mounting table.

Images