JP2010173813A - Metallic wire winding reel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reel for winding a metallic wire in which the inner surface of an L-shaped portion that continuously extends from a winding drum to a flange is designed to have an suitable round shape to prevent a winding collapse or a breakage. <P>SOLUTION: In the reel for winding a metallic wire in which the diameter D of the metallic wire and the curvature radius R1 of the inner surface of the L-shaped portion satisfy the relation of 0.4D≤R1≤15D, and the thickness d1 of the winding drum and the thickness d2 of the flange are both within the range of 4 to 10 mm, the diameter D of the metallic wire and the curvature radius R1 of the inner surface of the L-shaped portion satisfy the relation of 0.4D≤R1≤15D, and the thickness d of the L-shaped portion satisfies the relational expression of d1<d(d1<d2) or d2<d(d2<d1). <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

The present invention relates to a metal reel used when winding or supplying a long metal wire.

Reels are used in the production and use of long metal wires. As shown in FIG. 1, the reel has a circular flange portion 4 and a cylindrical winding drum portion 6.

Depending on the manufacturing process, the reels are roughly divided into two types. One is an integral type in which a cast body is ground to form a flange portion and a winding drum portion. The other is an assembly type in which the winding drum portion and the pair of flange portions are separately formed and integrated by welding.

Although the integrated reel is rich in rigidity, it has drawbacks such as large weight and high manufacturing cost. On the other hand, the assembled reel has the advantages of light weight and low cost, but has the following disadvantages. That is, an ultrafine metal wire having a wire diameter of less than 0.2 mm, for example, a saw wire having a wire diameter of 0.10 to 0.5 mm or less, or a wire for a tire steel cord having a wire diameter of about 0.15 to 0.40 mm, etc. When winding around a reel with a predetermined tension (for example, 4 to 15 N), a large winding pressure acts on the winding drum due to the winding tension. In this case, when the flange portion and the winding drum portion are joined by butting, a gap is generated between the flange portion and the winding drum portion. There was a possibility that the metal wire entered there and the metal wire was broken during rewinding.

Therefore, a reel as shown in Patent Document 1 has been proposed as a reel that solves such problems. The reel of Patent Document 1 is shown in FIG. A flange part consists of a disc body and an L-shaped member. On the surface on which the metal wire is wound, a continuous L-shaped portion is provided. That is, the coupling between the winding drum end and the flange portion is not abutting, and there is no gap at the corner (the coupling portion between the winding drum end and the flange portion). Therefore, the structure which can eliminate generation | occurrence | production of the situation where a metal wire enters a clearance gap at the time of unwinding and a metal wire breaks is formed.

In addition to those represented by Patent Document 1, there are also those represented by Non-Patent Document 1. A perspective view of the reel of Non-Patent Document 1 is shown in FIG. A large-diameter hole is provided in the center of the flange. A shaft for rotating the reel is inserted into the hole, or is sandwiched from both sides by a support for rotating and holding the reel. Such a reel is also formed by coupling with a flange portion having an L-shaped portion continuous from the winding drum portion as described above. The flange of such an assembly-type reel can generally be formed by pressing a disk.

JP 2007-230688 A

Design registration No. 1307359

In particular, R is generated on the inner surface of the L-shaped portion in the flange portion having the L-shaped portion formed by processing typified by a press. When a metal wire is wound on a reel, it has been a problem for a long time that this R becomes harmful.

That is, when the metal wire is wound around the reel, the winding direction of the metal wire is folded back at the flange portion (traverse mechanism). At this time, when the portion where the winding drum portion and the flange portion are coupled, that is, the inner surface of the L-shaped portion has an R shape, the metal wire is wound along the R surface and is not aligned horizontally.

Normally, adjustment is performed by predicting the distance between the flanges and the R shape of the L-shaped portion so as to be wound in alignment by setting the traverse mechanism in the winding equipment. However, there are limits to the traverse mechanism and adjustment. When the position of the metal wire wound up by the R shape of the L-shaped portion becomes higher than the alignment surface, the metal wire rolls, and so-called “collapse” occurs in which the winding position is not aligned.

When this unwinding occurs, the winding positions of the metal wires are not aligned, that is, the metal wires are in a mixed state. In this state, that is, a state in which a metal wire to be disconnected later is covered on a metal wire to be disconnected (disconnected) first, disconnection cannot be performed and disconnection occurs.

Therefore, it is conceivable to reduce the R shape. However, if it is too small, for example, if the winding drum surface and the flange portion inner surface form a right angle, a crack occurs at the right angle portion. When a metal wire diameter of φ0.10 to 0.15 mm and a length of several hundred km are wound on a reel, the winding pressure applied to the flange surface reaches several tens of tons. It was confirmed that cracking occurred at right angles or extremely small R shapes close to right angles against such pressure.

Further, in the assembly type reel, when the L-shaped portion is formed on the flange portion by pressing or the like, the L-shaped portion thickness becomes larger than the plate thickness before processing. At this time, the L-shaped inner surface swells and a satisfactory R shape cannot be obtained.

Therefore, it is conceivable to process the inner surface of the L-shaped part into a desired R shape by grinding after pressing. However, the thickness of the L-shaped portion is reduced simply by grinding, and the strength that can withstand the winding pressure is not necessarily obtained.

As described above, by providing an appropriate R-shaped inner surface of the L-shaped portion that continues from the winding drum portion to the flange portion, a reel for winding a metal wire body that does not collapse and does not generate a crack is provided.

In addition, the present invention provides a reel for winding a metal wire body having an appropriate R shape with respect to an assembly type reel and having strength.

As a means to solve the problem,
In a reel for winding a metal wire body comprising a winding drum portion and a pair of flange portions having an L-shaped portion continuous from the winding drum portion,
A reel for winding a metal wire body in which the wire diameter D and the radius of curvature R1 of the inner surface of the L-shaped portion of the reel are in a relationship of 0.4D ≦ R1 ≦ 15D.

Alternatively, a metal wire comprising a winding drum portion and a pair of flange portions having an L-shaped portion continuous from the winding drum portion, and the winding drum thickness d1 and the flange thickness d2 are 4 to 10 mm, respectively. In the reel for strip winding,
The metal wire diameter D and the radius of curvature R1 of the L-shaped inner surface of the reel are in a relationship of 0.4D ≦ R1 ≦ 15D, and the L-shaped thickness d is d1 <d (d1 <d2) or d2 <d ( A reel for winding a metal filament satisfying the relational expression d2 <d1).

The L-shaped inner surface R1 can be varied according to the metal wire diameter. That is, as the metal wire diameter is smaller, R1 becomes relatively larger and winding is more likely to occur. Therefore, the smaller the metal wire diameter, the smaller the allowable range.

From the above, it can be said that it is ideal to make the L-shaped inner surface R1 as small as possible and ultimately form a right angle. However, as described above, if the shape is vertical or extremely small, it cannot withstand the winding pressure applied when the reel is used, and cracks and breakage occur. As a result, there is a minimum radius of curvature of the inner surface of the L-shaped portion in each wire diameter, and the present invention has been found.

If the L-shaped inner surface R1 has the above curvature radius, the winding collapse is extremely small. Accordingly, it is possible to prevent the metal wire from being disconnected due to the collapse of the winding when the metal wire is disconnected. In addition, the reel has a strength that does not cause cracking even when the reel is completely wound, that is, when the maximum load is repeatedly applied to the L-shaped portion.

In particular, a reel made of a plate material such as an assembly type prevents cracking and breakage due to winding pressure by ensuring a certain thickness or more for the L-shaped part thickness, which is harmful when realizing the radius of curvature R1. can do.

Sectional view of the reel of the present invention and enlarged view of the L-shaped part Typical view of a conventional assembled reel Another typical perspective view of a conventional assembled reel Illustration of L-shaped part thickness d

When the L-shaped inner surface R1 is less than 0.4D, cracking occurs due to the above reason. Also, a good winding state can be realized from the viewpoint of collapse.

When the L-shaped inner surface R1 is larger than 15D, winding collapse frequently occurs. The above range was determined from the relationship between the curvature radius R1 and the rise in the winding position of the metal wire when wound in an L-shaped portion, that is, an R shape with respect to the winding surface wound in alignment in the winding drum portion 6.

The range of the L-shaped inner surface R1 is applicable not only to the assembly type but also to the integral type. If it is in the range of 0.4D to 15D, there is very little collapse.

The L-shaped part is the place where the load is most applied to the winding pressure of the metal wire. The assembly die, that is, the one to be press-molded, must be larger than at least one of the winding drum part d1 and the flange part d2.

The L-shaped portion thickness d is obtained as follows using FIG. In the reel cross section, first, a straight line X is drawn along the winding drum surface 10 so as to be perpendicular to the flange. Further, a straight line Y perpendicular to the straight line X is drawn along the flange inner surface 12. A straight line Z that is 45 ° diagonally upward to the left is drawn from the point A where the straight line X and the straight line Y intersect. A point where the straight line Z intersects the L-shaped inner surface R1 is defined as a point B. Further, a point that intersects the straight line Z and the L-shaped outer surface R2 is defined as a point C. The distance between point B and point C at this time was defined as L-shaped portion thickness d.

As a method of realizing the thickness d while realizing the L-shaped inner surface R1 as desired, a method of reducing the L-shaped outer surface R2 is conceivable. When the curvature radius R2 of the L-shaped outer surface is large, the curvature radius R1 of the L-shaped inner surface is also increased. In this case, for example, grinding is performed to obtain a desired R1. Then, the L-shaped part thickness d becomes thinner than the winding drum part d1 and the flange part d2. Therefore, it is important to perform a process for reducing the L-shaped outer surface R2, for example, a press process.

The flange portion may include an additional member. A typical example is a disk or the like coupled to the flange outer surface 14 for reinforcement. In this case, the thickness of the additional member is not included in the winding drum portion thickness d1, the flange portion thickness d2, and the L-shaped portion thickness d.

In accordance with the present invention, several types of assembled reels were made. Reels having a radius of curvature R1 of the inner surface of the L-shaped part of 0.05 mm, 0.06 mm, 1.5 mm, 2.0 mm, and 2.5 mm were manufactured. Each of the reels has a winding drum thickness of 6.0 mm, a flange thickness of 5.0 mm, and an L-shaped thickness of 5.5 mm. These reels were wound after 700 mm of φ0.140 mm metal wire was wound. The traveling speed of the metal wire during winding and breaking was 800 m / min. Furthermore, the wire breaking state when this was repeated three times and the inner surface of the L-shaped part after wire breaking were observed. The results are shown in Table 1.

A broken line in the middle of the disconnection was designated as “x”. Further, the inner surface of the L-shaped part after the wire breakage was observed with a microscope, and the case where there was a problem such as cracking was similarly designated as “x”. If there were no other problems, “○” was assigned.

According to Table 1, at 0.05 mm, since the crack was confirmed at the time of observation after the first winding and wire breaking, the subsequent verification was not performed. Further, at 2.5 mm, disconnection occurred at the L-shaped portion that was considered to be a winding failure at the first time. After rewinding and repeating the wire breaking, the wire breakage occurred again for the third time.

Next, with the curvature radius R1 being 1.5 mm, the L-shaped portion thickness d was 3.5 mm, 4.5 mm, and 5.5 mm. The results are shown in Table 2.

From Table 2, when the L-shaped portion thickness d is 4.5 mm, it can be used once. However, when repeated, cracking occurred in the second time. Similarly, when the thickness was 5.5 mm, a crack was confirmed at the third time. However, the reel having the thickness according to the present invention has no problem in use five times. Also, no breakage occurred in any of the reels.

2... Reel 4... Flange part 6... Winding body part 8... Hole part 10 ... Winding body surface 12 ... Flange part inner surface 14 ... Flange part outer surface R1 ... L-shaped inner surface R2 ... L-shaped outer surface

Claims (2)

In a reel for winding a metal wire body comprising a winding drum portion and a pair of flange portions having an L-shaped portion continuous from the winding drum portion,
A reel for winding a metal wire body in which the metal wire diameter D and the radius of curvature R1 of the inner surface of the L-shaped portion of the reel are in a relationship of 0.4D ≦ R1 ≦ 15D. A metal wire body comprising a winding drum portion and a pair of flange portions having an L-shaped portion continuous from the winding drum portion, and the winding drum thickness d1 and the flange thickness d2 are 4 to 10 mm, respectively. In winding reels,
The wire diameter D and the radius of curvature R1 of the L-shaped inner surface of the reel are in a relationship of 0.4D ≦ R1 ≦ 15D, and the L-shaped thickness d is d1 <d (d1 <d2) or d2 <d (d2 <Reel for winding a metal filament satisfying the relational expression <d1).