JP3883196B2 - Reel for metal wire - Google Patents

Description

  The present invention relates to a reel for a metal filament, and more particularly, to a reel for a metal filament suitable for an ultrafine metal filament having a wire diameter of less than 0.2 mm.

  In general, a reel for a metal striated body has a rod body and a pair of flange portions located at both ends of the rod body, and the rod body and the flange are made of structural carbon steel (for example, S45C). It is made of steel. In this way, the metal linear body reel in which the rod body portion and the flange portion are made of a steel material is an integrated reel (cut-out reel) in which the rod body portion and the flange portion are cut out as an integral object depending on the manufacturing method. In addition, the barrel portion and the flange portion are separately manufactured from thick steel materials, and are classified into a welding reel integrated by welding or an assembly reel connected with bolts (for example, see Patent Document 1).

  By the way, these reels have an ultrafine metal wire with a wire diameter of less than 0.2 mm, for example, an ultrafine metal wire (saw wire) for a wire saw with a wire diameter of 0.12 to 0.16 mm or less, and a rubber product reinforcement. An ultrafine metal wire or steel cord with a wire diameter of about 0.15 to 0.40 mm as a strand of steel wire cord (tire cord) for use in a reel with a predetermined tension (for example, 0.4 to 1.5 kg) When winding, a large winding pressure (tightening force) due to the winding tension acts on the rod body part, and a side pressure (push expansion force) acts on the flange part by reciprocating and winding many times. And the winding pressure (clamping force) and the flange portion acting on the barrel portion as the wire diameter of the metal strip to be wound is smaller, the winding pitch is denser, the winding tension is larger, and the winding reciprocation is larger. The side pressure (pushing and expanding force) acting on the pressure increases at an accelerated rate.

  Therefore, the reel around which such an ultrafine metal filament is wound has sufficient strength against the winding pressure (clamping force) by the rod body and against the elongation caused by the lateral pressure expanding the flange, and The flange portion must have a sufficient strength against the side pressure and a rigidity with little deflection due to the side pressure. The bending of the flange due to the side pressure causes deformation (dentation) of the rod body, and the deformation of the rod body leads to hunting when winding the wire and causes disconnection.

  In particular, in the case of a “slim type reel” in which the diameter of the flange portion is larger than the width of the flange body portion, the pressure (side pressure) applied to the flange portion is much larger than the winding pressure applied to the flange body portion. Therefore, the pressure applied to the flange portion expands both flange portions in a direction away from each other on the outer peripheral side. And the side pressure may reach several tons or several tens of tons when a saw wire having a weight of 40 to 60 kg or more is wound like a reel for wire saws. Stress concentrates at the corner where the flange and the flange are connected, and breakage tends to occur at this point.

  On the other hand, in the case of a “body length reel” in which the diameter of the flange portion is larger than the width of the rod body portion, the pressure caused by the winding tension is concentrated on the rod body portion, and the winding pressure (clamping force) acting on the rod body portion is reduced. growing. Then, due to this large winding pressure (tightening force), the saddle drum portion is deformed so that the central portion is reduced in diameter, and due to this deformation, the reel is deformed so that both flange portions are collapsed inward. In the case of such a reel, damage is likely to occur in the rod body.

  For this reason, the conventional one-piece reel, welding reel, or assembly reel has a thickness of 20 to 50 mm for the steel body of the flange body and the flange so that sufficient strength and rigidity can be ensured when winding an ultrafine metal filament. As a result, the weight of the reel itself became extremely large, the handling of the reel deteriorated, the transportation cost was high, and the material cost and processing cost were also high. In addition, even if the steel material of the rod body and flange portion is increased in this way, in the case of a slim type reel, it is necessary to reinforce the joint between the rod body portion and the flange portion. In some cases, it was necessary to reinforce the rod body.

  In particular, in the case of a single-piece reel, the rigidity is high and it can withstand repeated use, but since it is machined, the material cost and processing cost are increased, and the total weight increases because of a solid structure. Also, in the case of a bolt-connected assembly reel, each part can be formed by forging, etc., so that the material cost and processing cost can be reduced, and the weight can be reduced as a hollow structure, but the winding tension when winding a metal filament is reduced. Due to the side pressure (pushing and expanding force) generated due to this, there is a problem that a gap is formed between the flange part and the rod body part, and the metal wire body bites into the gap.

  On the other hand, since the welding reel can have a hollow structure, the material cost and the processing cost can be reduced and the weight can be reduced. Further, since the welding reel is integrated by welding, a gap is formed between the flange and the winding drum. The problem that the wire bites in does not occur.

  However, even in the case of welding reels, in order to ensure the strength and rigidity against winding pressure (clamping force) and side pressure (push-expanding force), a thick steel pipe is used for the rod body, or a thick steel plate is bent. It is necessary to use a cylindrical shape and the flange portion also needs to be a thick steel plate, which is extremely insufficient in terms of weight reduction. Moreover, the welded portion between the flange body portion and the flange portion cannot absorb the stress (side pressure) completely, and therefore the degree of breakage is extremely high. Therefore, in the case of the welding reel, it is necessary to take measures to reinforce the flange body and the flange and to prevent damage to the joint between the flange and the flange.

  As described above, the conventional one-piece reel, welding reel, or assembly reel has not been able to achieve sufficient weight reduction while ensuring strength and rigidity.

Therefore, the applicant first presses a thin high-strength steel plate with a rod body and flanges at both ends as a reel for a metal filament that can achieve sufficient weight reduction while ensuring strength and rigidity. A press reel that has been molded and manufactured separately as a member having a rib-like reinforcing structure and integrated by spot welding has been developed (see, for example, Patent Document 2).
Japanese Patent Laid-Open No. 11-114798 JP 2001-206636 A

  In this way, the press reel in which the flange and flange are separately manufactured by welding high-strength steel plates and welded together is lightweight, and the strength and rigidity are extremely fine such as saw wire. In the case of winding a metal wire body, a sufficient measure can be taken up to a winding weight of about 30 kg. However, in the case of a conventional press reel, when an extremely fine metal filament having a wire diameter of less than 0.2 mm is wound, if the winding weight is 40 to 60 kg or more, the strength cannot be met.

  In other words, a conventional press reel is one in which the press-molded barrel part and flange part are spot-welded at the corners where the saddle barrel part and the flange part intersect. If the combined thickness is about 6 mm and the wall thickness is larger than that, spot welding cannot be performed. Therefore, there is a limit to increasing the thickness of the steel sheet corresponding to the increase in winding weight.

  In addition, instead of spot welding, it is conceivable to weld the entire corner of the corner by arc welding in the same way as a welding reel made of thick steel, but the entire corner of the reel with a thickness of several millimeters is combined. When arc welding is performed, the reel is distorted due to the heat effect during welding, and therefore, runout occurs when the reel rotates, making it unusable for practical use.

  Therefore, it is a problem to increase the strength of the reel for the metal filament body that integrates the flange body portion and the flange portion by welding so as to cope with the increase in winding weight.

  The reel for a metal striate of the invention according to claim 1 is composed of a cylindrical rod body part and a pair of flange parts located at both ends of the rod body part. It is manufactured from a separate plate-shaped steel material, and each flange portion is formed with a cylindrical connecting portion that fits into the inner periphery of both ends of the flange body portion, and the cylindrical shape of each flange portion is formed at both ends of the flange body portion. Through-holes are formed at predetermined intervals in the circumferential direction at positions overlapping with the connecting portions, and the through-holes are overburdened by welding from the outside in the radial direction of the rod-body portion, and the rib-body portion and the flanges are formed by welding. The parts are joined and integrated.

  This reel for metal wire rods welds the rod body and flange to the through hole on the rod body side in the form of a fillet, so that it is difficult to achieve spot welding by arc welding. Compared to a conventional press reel that can be welded and the flange portion and the flange portion are joined by spot welding, the thickness of the steel plate can be increased, and the strength and rigidity can be increased to cope with an increase in winding weight.

  Moreover, the weight of the reel can be reduced by suppressing the thickness of the steel sheet to be used.

  In addition, the entire circumference of the corners of the flange and flange portions are not arc-welded as in the conventional welding reel, but are welded at predetermined intervals in the circumferential direction, so that the reel is distorted due to the heat effect during welding. There is nothing wrong.

  The number of through holes for welding may be, for example, 8 to 16 (12 in the embodiment described later).

  The reel for metal filaments of the invention according to claim 2 is the above-described reel for metal filaments of the invention according to claim 1, wherein each flange portion is a part that forms a corner at a connecting position with the rod body portion. Is a triple structure composed of three plate-like steel materials, and the flange outer peripheral portion has a double structure.

  Thus, the flange part has a double or triple structure, whereby the strength and rigidity of the flange part can be increased with respect to the side pressure. In addition, since the vicinity of the corner where the stress is maximum is a triple structure, and the vicinity of the outer periphery of the flange is a double structure, the strength and rigidity of the flange portion can be secured, and a restoring force (elasticity) against bending can be secured. it can.

  According to a third aspect of the present invention, there is provided the metal strip reel according to the first or second aspect of the present invention, wherein the flange portion and the pair of flanges are formed from a high-tensile steel plate. Is.

  For example, SAFC (cold-rolled high-tensile steel plate), SAPH (hot-rolled high-tensile steel plate) and the like are suitable as the high-tensile steel plate used for the saddle drum. Moreover, as a high-tensile steel plate used for a flange part, SAPH (hot rolled high tensile steel plate), SPCC (cold rolled high tensile steel plate), etc. are suitable, for example.

  However, it is also possible to use structural carbon steel such as S45C for the rod body portion and the flange portion.

  A reel for a metal filament body of the invention according to claim 4 is the reel for a metal filament body of the invention according to claim 3, wherein the thickness of the high-strength steel plate constituting the rod body portion is 3.0. The thickness of the high-tensile steel plate constituting at least the cylindrical connecting portion of the flange portion is set to 3.0 to 4.0 mm.

  The body and flange are welded in the form of a wall to the through-hole on the side of the body, so there is no limit to the thickness of the steel sheet, but to reduce weight, bend or press work. In order to form, it is preferable that the upper limit of the thickness of the flange body portion is suppressed to, for example, about 4.0 mm, and the upper limit of the thickness of the flange portion is suppressed to, for example, about 4.0 mm.

  In particular, it is preferable that the thickness of the flange portion is 3.0 to 4.0 mm, and the thickness of the cylindrical connecting portion which is at least the welded portion of the flange portion is also 3.0 to 4.0 mm. It becomes possible to cope with an increase in winding weight that cannot be handled by a conventional press reel using welding.

  According to the present invention, while reducing the weight, the strength and rigidity of the metal wire reel can be increased to cope with an increase in winding weight, and the reel can be prevented from being distorted by heat during welding. be able to.

  Embodiments will be described below with reference to the drawings.

  1-3 show an example of embodiment. 1 is a sectional view of a reel, FIG. 2 is a front view of the reel, and FIG. 3 is a partial sectional view of a flange portion.

  The reel of this embodiment is a reel for a metal filament body around which an ultrafine metal filament body having a wire diameter of 0.20 mm or less, such as a saw wire used for cutting hard materials such as artificial quartz, silicon, and ceramics, is wound. The cylindrical casing 1 and a pair of flanges 2 and 2 located at both ends of the casing 1 are configured.

  The rod body 1 is produced by bending a cold-rolled high-tensile steel plate (SAFC) having a thickness of 3.5 mm into a cylindrical shape, for example, at both ends of the rod body 1 in the circumferential direction. A plurality of (12 in the illustrated example) through holes 3 are formed at regular intervals. Then, a reinforcing ring 4 is fitted in substantially the center on the inner side of the rod body 1.

  Moreover, the flange parts 2 and 2 of both ends are the three plate members of the 1st member 2a, the 2nd member 2b, and the 3rd member 2c formed by separately press-molding a hot-rolled high strength steel plate (SAPH), for example. Are combined and integrated.

  The first member 2a of the flange portions 2 and 2 is a substantially circular donut having a plate thickness of, for example, 3.2 mm, an outer diameter that is approximately twice the outer diameter of the rod barrel portion 1, and an inner diameter that is slightly smaller than the inner diameter of the rod barrel portion 1. It is formed to have a cylindrical connecting portion 5 that has an inner diameter portion that protrudes a predetermined width inwardly (on the flange body side) and that fits into the inner periphery of both ends of the flange body 1.

  The second member 2b has a plate thickness of, for example, 2.3 mm and an outer diameter slightly smaller than that of the first member 2a. The second member 2b has a core pipe mounting hole 6 in the center. . Further, the second member 2b has a substantially wedge shape in a front view that bulges outward (inside of the barrel body) at a position near the outer periphery across the inner diameter portion of the first member 2a in a front view (FIG. 2). A plurality of ribs 7 (12 in the illustrated example) are formed radially. Further, the second member 2b is formed with a bent portion 8 which is bent in an arc shape on the outer edge (on the side of the rudder trunk portion) at the outer peripheral edge.

  The first member 2a and the second member 2b are overlapped so that the second member 2b is on the outside (on the side of the rudder trunk), and between the ribs 7 of the second member 2b in front view (FIG. 2). The first member 2a and the second member 2b are spot-welded with a plurality of locations closer to the outer periphery (12 locations in the illustrated example) as the welding position 9. The outer periphery of the first member 2a is the second member. The outer peripheral portion of the first member 2a is folded back by winding the bent portion 8 at the outer peripheral edge of the second member 2b. This portion constitutes a reinforcing portion 10 having a ring-shaped cross section.

  Further, the third member 2c has a plate thickness of, for example, 3.2 mm and an outer diameter of approximately 2/3 of the second member 2b, and a core pipe mounting hole 11 is formed at the center. Yes. The third member 2c overlaps substantially half of the rib 7 of the second member 2b in the radial direction when viewed from the front (FIG. 2), and each second member 2b when viewed from the step (FIG. 3). The substantially wedge-shaped ribs 12 are formed in a radial shape so as to cover the ribs 7 in the front view, which bulges outward (on the side of the barrel body), as the ribs 7 of the second member 2b (12 in the illustrated example). ing.

  The third member 2c is disposed on the outer side (on the side of the barrel body) of the second member 2b. The second member 2b and the third member 2c are spot-welded at the welding positions 13 at 12 locations in the illustrated example and the welding positions 14 at a plurality of equally spaced locations (4 locations in the illustrated example) near the inner periphery. The

  In this way, the first member 2a, the second member 2b, and the third member 2c are integrated, whereby the flange portions 2 and 2 are formed. Each flange portion 2, 2 has a triple structure in the vicinity of a corner portion (inner diameter portion of the first member 2 a) at a connection position with the flange body portion 1 and a double structure in the vicinity of the outer peripheral portion.

  And these flange parts 2 and 2 are assembled | attached to the both ends of the trunk part 1 so that the cylindrical connection parts 5 and 5 may fit in the inner periphery of the edge part of the saddle trunk part 1, respectively. Then, the flange body 1 and the flange portions 2 and 2 are joined and integrated by arc welding which fills the through holes 5 formed at both ends of the flange body 1.

  Then, the core pipe 15 is mounted so as to pass through the centers of the flange portions 2 and 2 (core pipe mounting holes 6 and 11 of the second member 2b and the third member 2c), and both ends of the core pipe 15 are caulked. The two flange portions 2 and 2 are fixed to the end surfaces (outer surfaces of the third member 2c).

  In addition, as a material of the trunk part 1, in addition to SAFC (cold rolled high tensile steel sheet), SAPH (hot rolled high tensile steel sheet) and the like are suitable. In addition to SAPH (hot rolled high strength steel plate), SPCC (cold rolled high strength steel plate) or the like is suitable as the material of the flange portion 2. Further, the material of the rod body portion 1 and the flange portion 2 may be structural carbon steel such as S45C.

  Moreover, 3.0-4.0 mm is suitable for the thickness of the steel plate which comprises the collar body part 1, and the flange part 2 has 3.0-4 thickness of the 1st member 2a which comprises the cylindrical connection part 5. FIG. It is preferable that the thickness of the second member 2b is 2.0 to 3.0 mm, and the thickness of the third member 2c is 3.0 to 4.0 mm.

  The number of ribs 7 and 12 provided on the second member 2b and the third member 2c of the flange portions 2 and 2 is suitably about 8 to 16, respectively.

  The number of through holes 3 provided at both ends of the rod body 1 is appropriately about 8 to 16.

  Of course, the metal strips of the present invention are not limited to saw wires but can be applied to reels for other metal strips such as tire cords.

Sectional view of reel of embodiment Front view of reel of embodiment Partial sectional view of the flange portion of the reel according to the embodiment

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 捲 body part 2 Flange part 2a 1st member 2b 2nd member 2c 3rd member 3 Through-hole 4 Reinforcement ring 5 Cylindrical connection part 6, 11 Core pipe attachment hole 7, 12 Rib 8 Bending part 9, 13, 14 Welding Position (spot welding)
10 Reinforcement part 15 Core pipe

Claims (4)

A reel for a metal wire body composed of a cylindrical rod body and a pair of flange portions located at both ends of the rod body,
The flange part and each flange part are each made from a separate plate steel material,
Each flange portion is formed with a cylindrical coupling portion that fits into the inner periphery of both end portions of the saddle barrel portion,
Through holes are formed at predetermined intervals in the circumferential direction at positions overlapping with the cylindrical connecting portions of the flange portions at both ends of the saddle barrel portion,
A metal wire is characterized in that the through-hole is welded from the outside in the radial direction of the flange body portion by welding, and the flange body portion and the flange portions are joined and integrated by the wall thickness. Body reel. Each flange portion has a triple structure in which a portion forming a corner portion at a position where the flange portion is connected to the rod body portion is formed of three pieces of the plate steel material, and a vicinity of the flange outer peripheral portion is a double structure. The reel for metal filaments according to claim 1 characterized by things. The reel for a metal filament body according to claim 1 or 2, wherein the flange portion and the pair of flanges are formed from a high-tensile steel plate. The thickness of the high-tensile steel plate that constitutes the saddle drum portion is 3.0 to 4.0 mm, and the thickness of the high-tensile steel plate that constitutes at least the cylindrical connecting portion of the flange portion is 3.0 to 4.0 mm. The reel for metal filaments according to claim 3.

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