WO2008050554A1 - Cordon métallique annulaire, courroie métallique sans fin et procédé de fabrication de cordon métallique annulaire - Google Patents

Cordon métallique annulaire, courroie métallique sans fin et procédé de fabrication de cordon métallique annulaire Download PDF

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Publication number
WO2008050554A1
WO2008050554A1 PCT/JP2007/067983 JP2007067983W WO2008050554A1 WO 2008050554 A1 WO2008050554 A1 WO 2008050554A1 JP 2007067983 W JP2007067983 W JP 2007067983W WO 2008050554 A1 WO2008050554 A1 WO 2008050554A1
Authority
WO
WIPO (PCT)
Prior art keywords
annular
metal cord
outer layer
annular metal
coating
Prior art date
Application number
PCT/JP2007/067983
Other languages
English (en)
Japanese (ja)
Inventor
Yuichi Sano
Hitoshi Wakahara
Kenichi Okamoto
Hiroshi Sasabe
Original Assignee
Sumitomo(Sei) Steel Wire Corp.
Sumitomo Electric Tochigi Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2007148298A external-priority patent/JP2008240221A/ja
Application filed by Sumitomo(Sei) Steel Wire Corp., Sumitomo Electric Tochigi Co., Ltd. filed Critical Sumitomo(Sei) Steel Wire Corp.
Priority to US12/160,202 priority Critical patent/US20090136697A1/en
Publication of WO2008050554A1 publication Critical patent/WO2008050554A1/fr

Links

Classifications

    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/16—Ropes or cables with an enveloping sheathing or inlays of rubber or plastics
    • D07B1/162—Ropes or cables with an enveloping sheathing or inlays of rubber or plastics characterised by a plastic or rubber enveloping sheathing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F37/00—Manufacture of rings from wire
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F7/00—Twisting wire; Twisting wire together
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
    • D07B1/0673—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core having a rope configuration
    • D07B1/068—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core having a rope configuration characterised by the strand design
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B7/00—Details of, or auxiliary devices incorporated in, rope- or cable-making machines; Auxiliary apparatus associated with such machines
    • D07B7/16—Auxiliary apparatus
    • D07B7/165—Auxiliary apparatus for making slings
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B7/00—Details of, or auxiliary devices incorporated in, rope- or cable-making machines; Auxiliary apparatus associated with such machines
    • D07B7/16—Auxiliary apparatus
    • D07B7/167—Auxiliary apparatus for joining rope components
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G1/00—Driving-belts
    • F16G1/18—Driving-belts made of wire
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G9/00—Ropes or cables specially adapted for driving, or for being driven by, pulleys or other gearing elements

Definitions

  • Annular metal cord endless metal belt and method for producing annular metal cord
  • the present invention relates to an annular metal cord, an endless metal belt, and a method for producing an annular metal cord.
  • an endless belt using a metal cord as a core material is known.
  • the metal cord serving as the core material includes at least one filament serving as the central core and a plurality of filaments surrounding the central core.
  • Patent Document 1 Japanese Published Patent: Japanese Patent Application Laid-Open No. 2003-236610
  • Patent Document 2 Japanese Published Patent: Japanese Patent Laid-Open No. 4 307146
  • the endless metal belt described in Patent Document 1 has a rectangular cross section, it is vulnerable to twisting and easily breaks.
  • the metal cord described in Patent Document 2 is applied to an endless metal belt, it is necessary to join both ends of the metal cord into an annular shape.
  • a method of joining both ends of the metal cord a method of joining both ends of the metal cord and a method of joining both ends of each filament constituting the metal cord can be considered. In the method in which both ends of the metal cord are joined together and joined, the joining portion is concentrated at one place in the circumferential direction, and thus the metal cord is likely to be completely broken.
  • an object of the present invention is to provide an annular metal cord, an endless metal belt, and a method for producing an annular metal cord that are less likely to break and are easy to manufacture.
  • An annular metal cord according to the present invention capable of solving the above-described problems is formed by an annular core portion formed in an annular shape by a strand material formed by twisting a plurality of metal strands, and the annular core portion is formed on the annular core portion.
  • the annular metal cord is made to be durable and excellent in breaking strength and fatigue resistance.
  • the power to do S it is possible to eliminate the problem that the strand materials are scattered by the outer layer coating, and the outer layer coating becomes a cushioning material, so that, for example, even at a contact point with a pulley that is bent with a small radius of curvature, the outer layer
  • the friction increases the frictional resistance with the mating member with which the annular metal cord comes into contact, so that it is possible to suppress slipping and minimize wear, and to obtain good power transmission efficiency.
  • At least the periphery of the outer layer portion including the coupling portion between the winding start end portion and the winding end portion is covered with the outer layer coating.
  • the outer layer coating it is possible to strongly reinforce the coupling portion between the winding start end portion and the winding end portion of the outer layer portion, and it is possible to eliminate the problem that the metal strands constituting the strand material are scattered.
  • At least one non-covered portion is provided on the annular outer peripheral half surface of the outer layer coating.
  • the lubricant can smoothly penetrate from the non-covered portion into the interior, and between the annular core portion and the outer layer portion, between the strand materials constituting the outer layer portion, and each metal element constituting each strand material. It is possible to suppress a decrease in strength due to fretting wear between wires and a reduction in life due to fatigue.
  • the annular outer peripheral side half surface of the outer layer coating is provided with an uncovered portion extending over the entire circumference in the annular direction at at least one location in the circumferential direction in the cross section.
  • the annular outer peripheral side half surface of the outer layer coating is an uncovered portion over the entire circumference in the annular direction. That is, the outer layer coating is provided only on the annular inner peripheral side half surface.
  • the strand material can be integrated while suppressing an increase in rigidity as much as possible by providing the outer layer coating.
  • At least one non-covered portion is provided on the annular inner peripheral half surface of the outer layer coating.
  • the lubricant can smoothly penetrate into the inside from the non-covered portion of the annular inner peripheral half surface.
  • covering portions covered with the outer layer coating and non-covering portions without the outer layer coating are alternately formed over the entire circumferential surface and the entire length of the outer layer portion.
  • the lubricant can be smoothly infiltrated into the inside from the exposed portion which is the uncovered portion, and between the annular core portion and the outer layer portion, between the strand materials constituting the outer layer portion, and each strand material. It is possible to suppress the strength reduction due to friction and the shortening of the life due to fatigue between the constituent metal wires.
  • the covering portion is made longer than the non-covering portion.
  • the uncoated part can be made as long as possible as the minimum length necessary for the lubricant to penetrate into the inside, and the reinforcing effect can be enhanced and the life can be extended. .
  • the outer layer portion has the non-covering portion in at least one place in the annular direction.
  • the non-covering portion in at least one place in the annular direction.
  • the number of uncovered portions can be reduced as much as possible, the reinforcing effect of the outer layer coating can be enhanced, and the life can be extended.
  • an adhesive solidified portion obtained by solidifying the coating adhesive and a non-adhesive solidified portion without the coating adhesive are alternately formed on the outer peripheral surface of the annular core portion.
  • the annular core part itself can be reinforced by the adhesive solidifying part, and the strength S of the annular metal cord can be increased.
  • the non-adhesion solidified portion is provided, the lubricant can smoothly penetrate from the non-adhesive solidified portion into the annular core portion, and the strand material that becomes the annular core portion is formed. It is possible to suppress a decrease in strength due to friction between each formed metal wire and a reduction in life due to fatigue.
  • the non-covered portion without the outer layer coating in the outer layer portion and the non-bonded solidified portion without the coating adhesive in the annular core portion are arranged at different positions in the annular direction. .
  • the positions of the non-covered portion and the non-adhesive solidified portion are shifted in the annular direction, it is possible to suppress the reduction in the reinforcing effect due to the provision of the non-covered portion and the non-adhesive solidified portion as much as possible.
  • At least one of the coating adhesive and the outer layer coating has a hardness (JIS-A) of 22 to 60 and an elongation of 110 to 500% among the physical properties after solidification.
  • JIS-A hardness of 22 to 60 and an elongation of 110 to 500%
  • the outer layer coating is made of rubber.
  • the outer layer coating made of rubber increases the frictional resistance with the mating member in contact with the annular metal cord, so that it can be suitably used as a power transmission belt.
  • the rubber constituting the outer layer coating is bonded to the outer layer portion with an adhesive for metal rubber that bonds the metal and the rubber.
  • rubber gum and the strand material of an outer layer part can be fixed reliably, and the reinforcement effect can be heightened.
  • the rubber constituting the outer layer coating is vulcanized at a vulcanization pressure of 8 MPa or less.
  • the lubricant can be satisfactorily permeated by suppressing the rubber from entering the annular metal cord, between the annular core portion and the outer layer portion, between the strand materials constituting the outer layer portion, and each strand. It is possible to suppress a decrease in strength due to fretting wear and a shortening of life due to fatigue between metal wires constituting the material.
  • the annular metal cord when used in an environment where no lubricant is used, it is preferable to set the vulcanization pressure so that the rubber penetrates into the annular metal cord actively.
  • an endless metal belt according to the present invention capable of solving the above-mentioned problems is characterized by comprising the annular metal cord according to the present invention.
  • the above-mentioned annular metal cord By using this, it is possible to obtain an endless metal sheet having excellent breaking strength and fatigue resistance and easy to manufacture.
  • a masking tape is attached to a portion of the annular metal cord where the outer layer coating is not provided, A coating adhesive is applied to the outer peripheral surface of the cord, and the masking tape is removed after the coating adhesive is solidified.
  • the masking tape is applied to the portion of the annular metal cord where the outer layer coating is not provided, the coating adhesive is applied to the outer peripheral surface of the annular metal cord, and the masking tape is removed after the coating adhesive is solidified. Therefore, it is possible to easily manufacture an annular metal cord that is covered with an outer layer coating made of a coating adhesive, has no strength and strength, and does not have a problem that the strand material is dispersed. it can.
  • a masking tape is attached to a portion of the annular metal cord where the outer layer coating is not provided, The rubber tape is attached to the outer peripheral surface of the cord and the masking tape is removed after pressure vulcanization.
  • the masking tape is applied to the portion of the annular metal cord where the outer layer coating is not provided, the raw rubber is attached to the outer peripheral surface of the annular metal cord, and the masking tape is removed after the pressure vulcanization treatment. Accordingly, it is possible to easily manufacture an annular metal cord which is covered with an outer layer coating made of rubber, has a strong strength, and does not have a problem that the strand material is scattered, and which can smoothly penetrate the lubricant.
  • the present invention it is possible to provide a method for manufacturing an annular metal cord, an endless metal belt, and an annular metal cord that are excellent in breaking strength and fatigue resistance and that are easy to manufacture. Therefore, when the annular metal cord and the endless metal belt of the present invention are used in an industrial machine, the industrial machine can be made excellent in durability.
  • FIG. 1 is a perspective view of an annular metal cord according to a first embodiment of the present invention.
  • FIG. 2 is a perspective view of the annular metal cord according to the first embodiment before being coated with an outer layer.
  • FIG. 3 is a radial cross-sectional perspective view showing the annular metal cord according to the first embodiment.
  • FIG. 4 A perspective view showing a state where the second strand material is wound once around the annular core portion included in the annular metal cord according to the first embodiment.
  • FIG. 5 (a) is a radial cross-sectional view showing the annular metal cord according to the first embodiment, and (b) is a side view of the annular metal cord.
  • FIG. 6 is an enlarged perspective view showing a part of the annular metal cord according to the first embodiment.
  • FIG. 7 is a perspective view showing an example of a production apparatus for producing an annular metal cord.
  • FIG. 8 is a front view of the apparatus of FIG. 7, showing a state located in a ring by a chain line.
  • FIG. 8 is a front view of the apparatus of FIG.
  • FIG. 10 is a front view of an annular core portion constituting the annular metal cord C1.
  • FIG. 12] (a) to (e) are cross-sectional views showing other embodiments of the non-covered portion.
  • FIG. 14 A perspective view of an annular metal cord according to a second embodiment of the present invention.
  • FIG. 16 is a radial cross-sectional perspective view showing an annular metal cord according to a second embodiment.
  • FIG. 17 A perspective view showing a state in which a strand material is wound around the annular core portion included in the annular metal cord according to the second embodiment.
  • (a) is a radial sectional view showing the annular metal cord according to the second embodiment, and (b) is a side view of the annular metal cord.
  • FIG. 19 is an enlarged perspective view showing a part of the annular metal cord according to the second embodiment.
  • FIG. 21 is a perspective view of an annular metal cord according to third and fourth embodiments of the present invention.
  • FIG. 1 is a perspective view of the annular metal cord according to the first embodiment
  • FIG. 2 is a perspective view before the outer layer coating of the annular metal cord according to the first embodiment
  • FIG. 3 is the first embodiment.
  • FIG. 4 is a perspective sectional view in the radial direction showing the annular metal cord
  • FIG. 4 is a perspective view showing a state in which the second strand material is wound around the annular core portion included in the annular metal cord according to the first embodiment.
  • FIG. 5 (a) is a radial cross-sectional view showing the annular metal cord according to the first embodiment
  • FIG. 5 (b) is a side view of the annular metal cord according to the first embodiment.
  • FIG. 6 is an enlarged perspective view showing a part of the annular metal cord according to the first embodiment.
  • the outer peripheral side of the annular metal cord C 1 is covered with an outer layer coating 10.
  • the outer layer coating 10 is formed by bonding and solidifying a coating adhesive, which is a coating material having elasticity.
  • the annular metal cord C1 has an uncoated portion 10A that is not provided with the outer layer coating 10.
  • the non-covering portion 10A is formed in a slit shape on the entire outer circumferential side surface of the outer layer coating 10 over the entire circumference in the annular direction.
  • the coating adhesive for forming the outer layer coating 10 is an adhesive having excellent heat resistance and oil resistance, for example, silicon rubber-based elasticity, and its physical properties after solidification are used.
  • the hardness (JIS-A) is 22-60 and the elongation is 110-500%.
  • the outer coating 10 As an adhesive for coating, ThreeBond 1222B (manufactured by ThreeBond Co., Ltd.), which is a silicone adhesive sealant, can be used. This is a heat-resistant, “cold-resistant”, weather-resistant, “durable”, and wear-resistant sealant, and is a fast-drying / fast-curing sealant, which is suitable as the outer layer coating 10.
  • ThreeBond 1222B has a hardness (JIS-A) of 27 and an elongation of 450%.
  • the annular metal cord C1 includes an annular core portion 3 and an outer layer portion 4 that covers the outer peripheral surface of the annular core portion 3.
  • the annular core portion 3 is formed by joining both ends of the first strand material 1. Therefore, the annular core portion 3 has a coupling portion 3a as shown in FIG.
  • both ends of the first strand material 1 are joined by welding.
  • the diameter of the joint is less likely to increase compared to joining by other methods. Therefore, the force S can be obtained to obtain the annular core portion 3 in which the second strand material 2 is smoothly wound even at the joint portion.
  • the first strand material 1 is obtained by twisting a plurality of first metal strands 5 together.
  • the first strand material 1 is centered on one first metal strand 5 and is arranged on the outer peripheral surface of the first metal strand 5.
  • the first metal wire 5 of the book is wound around an S twist.
  • the first metal strand 5 is an alloy steel, and the material is C: 0.08-0.27 mass%, Si: 0.3 0 to 2.00 mass%, ⁇ 1: 0.50 —2.00% by mass, Cr: 0.20—2.00% by mass. Further, Mo: 0. 01- 1. 00 weight 0/0, Ni:. 0. 10-2 00 mass 0/0, Co:. 0. 10-2 00 wt%, and W: 0. 01-1 Contains at least one of the 00 mass%. Further, Al, Nb, Ti, and V are each contained at least one kind in the range of 0.001 to 10.10 mass%, and the balance is composed of Fe and impurities inevitably mixed. Since the first metal strand 5 made of such a material is used for the first strand material 1, the first strand material 1 has good weldability and excellent heat resistance. . The material of the first metal strand 5 is not limited to the above.
  • the first metal strand 5 has a diameter of 0.06-0.40 mm. Since the diameter of the first metal wire 5 is larger than 0.06 mm, the first strand material 1 should have appropriate rigidity. It can improve the fatigue resistance as well as S. Further, since the first strand material 1 forming the annular core portion 3 is located at the center of the cross section of the annular metal cord C1, the stress is compared with the second strand material 2 in a state where the annular metal cord C1 is bent. Becomes smaller. For this reason, the diameter of the first metal strand 5 can be made larger than that of the second metal strand 6 within the range of 0.06—0.40 mm, thereby increasing the rigidity. Further, since the diameter of the first metal strand 5 is smaller than 0.40 mm, the rigidity of the first strand material 1 is not excessively increased, and the cyclic metal cord C1 is less likely to undergo fatigue fracture due to repeated stress. can do.
  • the outer layer portion 4 is formed by winding the second strand material 2 around the annular core portion 3 as an axis. As shown in FIG. 5 (a), the second strand material 2 is formed by twisting a plurality of second metal strands 6 together.
  • the second metal element wire 6 uses a high carbon steel containing 0.660 mass% or more of C as a material. By selecting a material containing C of 60 mass% or more, the second metal element wire 6 can be made a steel wire having a higher breaking strength.
  • the second metal strand 6 may be made of the same material as the first metal strand 5, but the second metal strand 6 that is not welded is 0.60 mass%. It is more preferable to use a material containing the above C.
  • the material of the second metal strand 6 is not limited to the above.
  • the diameter of the second metal wire 6 has a diameter of 0.06-0.30 mm.
  • the second strand material 2 can have an appropriate rigidity and can improve the fatigue resistance. Therefore, it is easy to wind the second strand material 2 around the annular core portion 3 and the second strand material 2 is loosened. More preferably, the diameter of the second metal strand 6 is 0.06—0.22 mm.
  • the second strand material 2 includes six second metal strands 6 on the outer peripheral surface of the second metal strand 6 in an S twist. Wrapped.
  • the second strand material 2 is a geometrically stable seven-strand twist, it is strong and hardly breaks.
  • the second strand material 2 is wound around the annular core portion 3 over a plurality of circumferences, and at the same time, as shown in Figs.
  • the second strand material 2 is wound so as not to be twisted. Second strand by winding without twist The loosening of the material 2 can be suppressed.
  • the second strand material 2 is wound six times along the outer peripheral surface of the annular core portion 3. Since the second strand material 2 has substantially the same diameter as the annular core portion 3 formed by the first strand material 1, the second strand material 2 is formed on the outer peripheral surface of the annular core portion 3. Is wound substantially without gaps. Therefore, the outer layer portion 4 covers the annular core portion 3 densely.
  • the cross section of the annular metal cord C1 has a shape in which six second strand members 2 are arranged around the first strand member 1 that is the annular core portion 3 as shown in FIG. 5 (a). This cross-sectional shape is the same as the cross-sectional shape when seven strands of the first strand material 1 or the second strand material 2 are twisted. Thus, since the annular metal cord C1 has a geometrically stable structure, it has excellent breaking strength and fatigue resistance and can withstand deformation in the radial direction.
  • the second strand material 2 is wound around the outer peripheral surface of the annular core portion 3 in a Z-twist. Since the first strand material 1 and the second strand material 2 themselves are formed by S twist, the annular metal cord C1 is a mixture of S twist and Z twist. Therefore, it is possible to obtain the annular metal cord C1 with less unevenness on the surface appearance that is difficult to twist.
  • the second strand material 2 is wound at a predetermined winding angle with respect to the central axis of the annular core portion 3. For this reason, the second strand material 2 is wound without any disturbance, and an annular metal cord C1 having a substantially uniform surface state can be obtained.
  • the winding angle ⁇ of the second strand material 2 with respect to the X direction that is, the direction in which the central axis of the annular core portion 3 extends is 4.5 to 13. It is 8 degrees.
  • the winding angle ⁇ is greater than 4.5 degrees, the second strand material 2 is loosened.
  • the winding start end 2a and the winding end 2 of the second strand material 2 b are connected to each other by welding.
  • a portion including the joining portion 7 between the winding start end portion 2a and the winding end portion 2b of the second strand material 2 is covered with the outer layer coating 10.
  • the outer layer portion 4 is formed by winding the second strand material 2 around the annular core portion 3 and then joining the winding start end portion 2a and the winding end portion 2b of the second strand material 2 by welding. It is formed by doing.
  • FIG. 7 is a perspective view showing an example of a production apparatus for producing the annular metal code C1.
  • the manufacturing apparatus Ml includes a driving unit 40 that rotates the annular core portion 3 in the circumferential direction, and a second strand material 2 that supplies the second strand material 2 wound around the reel 51 to the winding portion of the annular core portion 3. And supply part 50 of the company.
  • the supply unit 50 of the second strand material 2 is fixed at a predetermined position.
  • the driving unit 40 includes two pinch rollers 42a and 42b that are installed on an arcuate holding arm 41 and connected to a drive motor to rotate the annular core portion 3 in the circumferential direction.
  • the holding arm 41 is provided with a clamp unit 43 that surrounds the periphery of the annular core portion 3 on the supply side of the second strand material 2 positioned in the direction opposite to the rotation direction of the annular core portion 3. .
  • This clamp unit 43 consists of two rollers 43a and 43b, prevents the annular core 3 from swinging in the lateral direction, maintains a stable circumferential rotation, and winds the second strand material 2. The position of the points is determined and high winding properties are obtained.
  • the annular core portion 3 is made vertical to suppress lateral vibration and rotate in the circumferential direction.
  • the clamp unit 43 composed of the two rollers 43a and 43b prevents the annular core portion 3 from swinging in the lateral direction, and surrounds the periphery of the annular core portion 3 even in the final finished cord diameter.
  • the groove shape is not particularly limited, and in addition to the U-shaped groove shape, the arc-shaped groove shape, A V-shaped groove may be used.
  • the holding arm 41 is swingably installed on the stand 44 so that the pendulum is moved by the swing mechanism 60 including the rotary disk 61 and the crank shaft 62 with the clamp unit 43 as a fulcrum. Yes.
  • the annular core part 3 held by the holding arm 41 is one end of the period of the pendulum movement, and as shown by the solid line in FIG. 8, the reel 51 is positioned outside the ring of the annular core part 3 and the annular core part 3 At the other end of the period of movement of the pendulum 3, swing as shown in the solid line in FIG.
  • the supply portion 50 of the second strand material 2 is installed horizontally at a distance that does not hinder the pendulum movement of the annular core portion 3 held by the pair of front and rear cassette stands 52 force holding arms 41.
  • a reel transfer mechanism is provided at the tip of the cassette stand 52 so as to be opposed to the surface of the annular core 3.
  • the supply section 50 has a reel 51 around which the second strand material 2 is wound, and a cylindrical outer peripheral wall having a diameter slightly larger than the outer diameter of the reel 51 and corresponding to at least the inner width of the reel. It consists of cassette 53.
  • the reel 51 is rotatably accommodated in the cassette 53 so as to cover the entire winding surface of the strand material 1, and is formed into a so-called cartridge.
  • An unwinding hole is formed in the outer peripheral wall of the cassette 53, and the second strand material 2 is drawn from the unwinding hole toward the clamp unit 43 at the winding point of the annular core portion 3.
  • the second strand material 2 is wound around a reel 51 with a coil diameter adjusted in advance, and is set in a cassette 53 of the supply unit 50.
  • a guide rod that can be removably attached to the cassette 53 and a cassette 53 attached to one guide rod are connected to the other guide.
  • a delivery mechanism for transferring to the rod is installed. This delivery mechanism can move the cassette 53 mounted on one guide rod to the other guide rod S by moving the rod in and out by the air cylinder and pushing the center of the cassette 53.
  • the annular metal cord C1 is manufactured through the following steps.
  • the first strand material 1 is curved in an annular shape, and the starting end portion and the terminal end portion are welded and joined to form the annular core portion 3.
  • the winding start end of the second strand material 2 is temporarily fixed to the annular core portion 3 using an adhesive tape or the like.
  • the annular core 3 is set in the driving unit 40 of the manufacturing equipment Ml. Then, the annular core portion 3 is rotated in the circumferential direction, and winding of the second strand material 2 around the annular core portion 3 is started.
  • the reel 51 traverses and reciprocates across the core surface of the annular core portion 3 at a predetermined position, and the annular core portion 3 performs a pendulum motion with the clamp unit 43 serving as a winding point of the second strand material 2 as a fulcrum. Therefore, the distance from the reel 51 to the winding point of the second strand material 2 is kept almost constant, and the second strand material 2 drawn from the reel 51 does not loosen during winding, and a constant tension is maintained. Below, the second strand material 2 is wound around the annular core portion 3.
  • the annular core portion 3 is moved by the pendulum with respect to the reel 51 as shown in (a) ⁇ (b) ⁇ (c) ⁇ (d) ⁇ (a) in FIG.
  • the second strand material 2 is formed into an annular shape by moving the reel 51 at a right angle with respect to the core surface of the annular core portion 3. It is wound around the core 3 in a spiral shape.
  • the above-described annular core portion 3 and outer layer portion 4 are subjected to a low-temperature annealing treatment. More specifically, heat treatment is performed on the annular core portion 3 and the outer layer portion 4 in a pressure chamber into which argon is introduced in a vacuum or a reduced-pressure atmosphere. The temperature during the heat treatment is 70 to 380 ° C. Thereby, the internal strain of the first metal strand 5 and the second metal strand 6 can be removed, and an annular metal cord C1 having no strain can be obtained.
  • a masking tape such as an adhesive tape or a soft metal plate tape is pasted over the entire circumference in the annular direction on the annular outer peripheral half surface to form the uncovered portion 10A in the annular metal cord C1.
  • a coating adhesive is applied to the outer peripheral surface of the annular metal cord C1, and the masking tape is removed after the coating adhesive is solidified.
  • the outer peripheral side of the annular metal cord C1 is covered with the outer layer coating 10, and the outer layer coating 10 is formed with slit-shaped uncovered portions 1OA over the entire circumference in the annular direction on the annular outer peripheral side half surface.
  • annular metal cord C1 When such an annular metal cord C1 is used for an endless metal belt of a continuously variable transmission described later, for example, an endless metal belt that rotates without meandering can be obtained. Endless metal belts that rotate without meandering do not wear due to contact with surrounding parts, so they can maintain high performance over a long period of time.
  • the annular metal cord C1 is made of a strong material having excellent breaking strength and fatigue resistance.
  • the outer layer coating 10 can eliminate the problem that the first strand material 1 and the second strand material 2 are separated, and the outer layer coating 10 becomes a buffer material, so that, for example, with a small radius of curvature. Even at the point of contact with the pulley subjected to bending, the outer layer coating 10 increases the frictional resistance with the mating member with which the annular metal cord C1 contacts, so that it is possible to suppress slipping and minimize wear. In addition, good power transmission efficiency can be obtained, and it can be suitably used as a power transmission belt.
  • the outer layer coating 10 can be very easily formed and reinforced by applying a coating adhesive to a predetermined place and solidifying it.
  • the lubricant can be smoothly permeated into the inside from the non-coated portion 10A.
  • the non-covered portion 10A force over the entire circumference in the annular direction is provided on at least one place in the circumferential direction in the cross-section of the outer layer portion 4 on the annular outer peripheral side half surface of the outer layer cover 10. It is possible to smoothly infiltrate the lubricant from the part 10A to the inside, and to reduce the strength reduction due to fretting wear between the strand materials 1 and 2 and the life shortening due to fatigue, while maintaining the rigidity over the entire circumference in the annular direction. Can be made uniform.
  • the hardness (JIS-A) is 22 to 60 and the elongation is 110 to 500%. High reinforcement effect can be obtained.
  • a masking tape is applied to the portion of the annular metal cord C1 that is not provided with the outer layer coating 10 and becomes the non-covered portion 10A.
  • a coating adhesive which is a coating material, is applied to the outer peripheral surface of the annular metal cord CI, and the masking tape is removed after the coating adhesive is solidified, so that it is covered with the outer coating 10 made of the coating adhesive.
  • the strength S is sufficient to prevent the trouble that the second strand material 2 serving as the outer layer portion 4 is scattered, and to easily manufacture the annular metal cord C1 that allows smooth penetration of the lubricant.
  • the first strand material 1 and the second strand material 2 are bonded separately, compared with the case where the first strand material 1 and the second strand material 2 are bonded together, the first strand material 1 and the second strand material 2 are annular. The possibility that the metal cord C1 is completely broken can be suppressed. Since the annular core portion 3 is formed from the first strand material 1 and the second strand material 2 is wound around the annular core portion 3 as a force, the annular metal cord having a high breaking strength can be obtained. When the outer layer portion 4 is formed, the second strand material 2 is wound around the entire circumference of the second strand material 2 instead of winding a plurality of the second strand materials 2, so only one second strand material 2 is required.
  • the number of joints is smaller than when a plurality of second strand materials 2 are used, it is possible to suppress a decrease in the breaking strength of the annular metal cord C1 and to facilitate manufacturing. . Since the second strand material 2 is wound at a predetermined winding angle, an annular metal cord C1 having a substantially uniform surface state in which the second strand material 2 is not disturbed can be obtained. Since an external force is uniformly applied to such an annular metal cord C1, a decrease in breaking strength can be suppressed.
  • the connecting portion of the first strand material 1 and the connecting portion of the second strand material 2 are different in the position of the annular core portion 3 in the circumferential direction. By shifting the position of the coupling portion from each other, simultaneous breakage of the annular core portion 3 and the outer layer portion 4 occurs, so that it is possible to suppress a decrease in the breaking strength of the annular metal cord C1.
  • the force that forms the slit-shaped non-covered portion 10A over the entire circumference in the annular direction on the annular outer peripheral side surface of the outer layer coating 10 is the non-covered portion 10A.
  • the lubricant can penetrate from the non-covered portion 10A into the inside. In this way, the uncovered portion 10A can be reduced as much as possible, the reinforcing effect of the outer layer coating 10 can be enhanced, and the life can be extended.
  • FIG. 12 is a cross-sectional view showing another embodiment of the non-covering portion 10A.
  • a plurality of uncovered portions 10A are formed on at least one or the entire circumference in the annular direction on the annular outer peripheral half surface of the outer layer coating 10.
  • the lubricant can be more smoothly permeated into the inside from the non-covered portion 10A, and the outer layer portion 4 is formed between the annular core portion 3 and the outer layer portion 4.
  • the force S suppresses the strength reduction due to fretting wear and the life shortening due to fatigue between the two strand materials 1 and between the metal wires 5 and 6 constituting each strand material 1, 2.
  • the outer peripheral side half surface of the outer layer coating 10 is formed as an uncovered portion 10A over the entire circumference in the annular direction, and the annular metal cord C1 having such a structure is used.
  • the lubricant can be more smoothly permeated from the non-covered portion 10A to the inside, and the strand materials 1 and 2 can be combined while suppressing the increase in rigidity due to the provision of the outer layer cover 10 as much as possible.
  • Power S can be.
  • one non-covered portion 10A is formed on the annular inner circumferential side half surface of the outer layer coating 10 over at least one or the entire circumference in the annular direction.
  • the lubricant can smoothly penetrate from the non-covered portion 10A into the ring-shaped inner peripheral side, and between the ring-shaped core portion 3 and the outer layer portion 4, Suppressing strength reduction due to fretting wear and shortening of life due to fatigue between the second strand materials 1 constituting the outer layer portion 4 and between the metal wires 5 and 6 constituting the strand materials 1 and 2 Can do.
  • a plurality of uncovered portions 10A are formed on at least one place or the entire circumference in the annular direction on the annular inner peripheral side half surface of the outer layer coating 10.
  • the lubricant can be more smoothly permeated from the non-covered portion 10A into the inside from the ring-shaped inner peripheral side, and between the ring-shaped core portion 3 and the outer layer portion 4.
  • the annular outer peripheral side half surface of the outer layer coating 10 is an uncovered portion 10A over the entire circumference in the annular direction, and further, the annular inner peripheral side half surface of the outer layer coating 10 is One uncovered portion 10A is formed over at least one place or the entire circumference in the annular direction, and according to the annular metal cord C1 having such a structure, lubrication is performed from the annular outer peripheral side and the inner peripheral side to the inside.
  • the strand materials 1 and 2 can be integrated while suppressing an increase in rigidity as much as possible by providing the outer layer coating 10.
  • FIG. 13 is a schematic perspective view showing a use state of the endless metal belt according to the present embodiment.
  • the endless metal belt B1 is used for a reduction gear 20 used in precision equipment and other industrial machines as shown in FIG. 13, for example.
  • the endless metal belt B1 includes three annular metal cords C1 arranged in parallel, and bears power transmission between the small-diameter driving pulley 22 and the large-diameter driven pulley 24.
  • the drive shaft of the drive motor 26 is connected to the rotation center of the drive pulley 22! / Circumferential grooves are formed in the outer circumference of the driving pulley 22 and the driven pulley 24 to stably lay each annular metal cord C1, and the endless metal belt B 1 is connected to the driving pulley 22 and the driven pulley.
  • the rotational force of the driving pulley 22 is transmitted to the driven pulley 24 via the endless metal belt B1.
  • the rotational speed of the driving pulley 22 is reduced by the driven pulley 24, and the torque of the driving pulley 22 is increased by the driven pulley 24.
  • the driven pulley 24 is axially connected to, for example, another pulley (not shown) and transmits power.
  • the cyclic metal cord C1 has a very high breaking strength.
  • the annular metal cord C1 since the annular metal cord C1 has a substantially circular cross section, it is more resistant to twisting than a rectangular cross section. Therefore, compared to using a flat belt as an endless metal belt, An endless metal belt Bl made of an annular metal cord CI has excellent bending resistance and durability.
  • the outer layer coating 10 is a force formed by solidifying the coating adhesive.
  • the outer layer coating 10 may be rubber for tires or belts.
  • the outer layer coating 10 may be formed on the annular metal cord C1 by covering the annular metal cord C1 with rubber.
  • the outer layer coating 10 is formed of rubber, by applying the outer layer coating 10 made of rubber around the annular metal cord C1, the annular metal cord C1 is ruptured in strength and fatigue resistance.
  • the outer layer coating 10 can eliminate the problem that the first strand material 1 and the second strand material 2 are separated by the outer layer coating 10, and the outer layer coating made of rubber.
  • the outer layer coating 10 increases the frictional resistance with the mating member with which the annular metal cord C1 contacts. Therefore, it is possible to suppress slipping and to eliminate wear as much as possible, to obtain good power transmission efficiency, and to be suitable for use as a power transmission belt.
  • the outer layer coating 10 made of rubber may be bonded to the second strand material 2 constituting the outer layer portion 4 with an adhesive for metal rubber that bonds the metal and the rubber. This is effective when the strand of the strand material 2 is not applied, so that the rubber can be securely fixed to the second strand material 2 and the reinforcing effect can be enhanced.
  • Chemlock manufactured by Road 'Far' East 'Inc.
  • the rubber constituting the outer layer coating 10 it is preferable to vulcanize at a vulcanization pressure of 8 MPa or less. This makes it possible to suppress the entry of rubber into the interior and to improve the lubricant.
  • the metal strands 5 constituting the strand materials 1 and 2 and between the annular core portion 3 and the outer layer portion 4, between the second strand materials 2 constituting the outer layer portion 4, and between the respective strand materials 1 and 2 can be penetrated. Therefore, it is possible to suppress a decrease in strength due to friction between the six members and a reduction in life due to fatigue.
  • a masking tape such as an adhesive tape or a soft metal plate tape is attached to a predetermined portion of the annular metal cord C1 that becomes the non-covered portion 10A.
  • a shell-like raw rubber is wound around the outer peripheral surface of the annular metal cord C1 in a spiral manner to occupy the shell.
  • a woven fabric is wound around the annular metal cord C1 to which the raw rubber has been attached in this way, accommodated in the vulcanizing can, and pressurized steam is introduced into the vulcanizing can and pressurized.
  • the raw rubber having plasticity wound around the annular metal cord C1 is vulcanized to form a vulcanized rubber having elasticity.
  • annular metal cord C1 is disposed on one of a pair of molds having a semicircular arc groove in cross-section, and the mold is placed in the vulcanizing can with the other mold covered on the upper part. It is acceptable to store and introduce pressurized steam to apply pressure.
  • the masking tape is removed from the annular metal cord C1 taken out from the vulcanizing can.
  • the outer circumference side of the annular metal cord C1 is covered with the outer layer coating 10 made of rubber, and is not covered.
  • Part 1 OA is formed.
  • the masking tape is formed on the portion of the annular metal cord C1 that is not provided with the outer layer coating 10 and becomes the non-coated portion 10A. Attaching raw rubber to the outer peripheral surface of the ring metal cord C1, and after applying pressure vulcanization, the masking tape is removed to cover the outer layer coating 10 made of rubber. In addition, it is possible to easily manufacture the annular metal cord C1 in which the second strand material 2 serving as the outer layer portion 4 is not scattered and the lubricant is smoothly permeated.
  • the second strand material 2 is wound around the outer peripheral surface of the annular core portion 6 for 6 turns. This is the first strand material 1 If the diameter of the second strand material 2 is different, the annular core portion 3 may have a large diameter and may be wound 7 or 8 times! /.
  • the outer peripheral surface of the annular core portion 3 is covered with one layer of the second strand material 2.
  • the outer peripheral surface of the annular core portion 3 may be covered with a plurality of layers of the second strand material 2.
  • the second strand material 2 is wound around the outer peripheral surface of the annular core portion 3 six times to form the first layer. After that, the second strand material 2 is wound 12 times around the outer peripheral surface of the first layer to form the second layer.
  • the first strand material 1 and the second strand material 2 are S-twisted, and the second strand material 2 is wound around the annular core portion 3 as Z. It is also possible that the first strand material 1 and the second strand material 2 are Z-twisted and the second strand material 2 is wound around the annular core portion 3 by S-twisting.
  • the annular metal cord C1 of the first embodiment has a substantially circular cross section as shown in FIG. 5 (a), but the cross section may be a flat shape.
  • the substantially circular annular metal cord C1 is deformed by pressing or the like.
  • the flatness is preferably 66% or more.
  • the force S is configured such that three annular metal cords C1 are stretched over the driving pulley 12 and the driven pulley 14 respectively, and the annular metal cord is suspended.
  • the number of C1 is not limited to this.
  • the number of annular metal cords C1 can be adjusted according to the required bending resistance and durability.
  • annular metal cord according to the second embodiment will be described with reference to the drawings.
  • the annular metal cord according to the first embodiment is composed of the first strand material and the second strand material
  • the annular metal cord according to the second embodiment is composed of one strand material. Except for the differences, they have a common structure and are the same as in the first embodiment. The structure and the same structure portion will be described with the same reference numerals.
  • FIG. 14 is a perspective view of the annular metal cord according to the second embodiment
  • FIG. 15 is a perspective view before the outer layer coating of the annular metal cord according to the second embodiment is performed
  • FIG. 16 is the second embodiment. It is a cross-sectional perspective view of the radial direction which shows the cyclic
  • FIG. 17 is a perspective view showing a state in which a strand material is wound around the annular core portion included in the annular metal cord according to the second embodiment.
  • FIG. 18 (a) is a radial sectional view showing the annular metal cord according to the second embodiment, and FIG. 18 (b) is a side view of the annular metal cord according to the second embodiment.
  • FIG. 19 is an enlarged perspective view showing a part of the annular metal cord according to the second embodiment.
  • the outer peripheral side of the annular metal cord C2 is covered with the outer layer coating 10.
  • This outer layer coating 10 has the same material and configuration as in the first embodiment, and is formed by applying and solidifying a coating adhesive. Alternatively, it is made of rubber as described in the first embodiment!
  • the annular metal cord C2 has an uncoated portion 10A that is not provided with the outer layer coating 10.
  • the non-covering portion 10A is formed in a slit shape on the entire outer circumferential side surface of the outer layer coating 10 over the entire circumference in the annular direction.
  • the annular metal cord C 2 includes an annular core portion 13 and an outer layer portion 14 that covers the outer peripheral surface of the annular core portion 13.
  • the annular core portion 13 is formed by bending the strand material 11 with a predetermined diameter by one round to form an annular shape.
  • the outer layer portion 14 around the annular core portion 13 is formed by continuously winding the strand material 11 constituting the annular core portion 13 around the annular core portion 13 with the annular core portion 13 as an axis. .
  • the strand material 11 is obtained by twisting a plurality of metal strands 15 together.
  • the strand material 11 is centered on one metal strand 15, and six metal strands 15 are S twisted on the outer peripheral surface of the metal strand 15. It is wrapped around.
  • the strand material 11 is a geometrically stable seven-strand, it is strong and hardly breaks.
  • the metal wire 15 is made of a high carbon steel containing 0.660 mass% or more of C as a material. 0. By selecting a material containing 60 mass% or more of C, the metal wire 15 has superior breaking strength. Can be made of steel wire.
  • the material of the metal strand 15 is not limited to the above.
  • the diameter of the metal wire 15 is not less than 0.06 mm and not more than 0.40 mm.
  • the strand material 1 has sufficient rigidity, and the annular core portion 13 can be hardly deformed.
  • the diameter of the metal strand 15 is 0.40 mm or less, the rigidity of the strand material 1 does not increase moderately, and the cyclic metal cord C2 can be made difficult to cause fatigue fracture due to unwinding stress. .
  • the strand material 11 when the strand material 11 is formed of the metal strand 15 having such a diameter, the strand material 11 having appropriate rigidity can be obtained, and accordingly, the strand material 11 is wound around the annular core portion 13. It becomes easy and loosening of the strand material 11 occurs.
  • the strand material 11 is wound around the annular core portion 13 over a plurality of circumferences, and is spirally wound as shown in FIGS.
  • the strand material 11 is wound so as not to be twisted. By winding without twisting, the looseness of the strand material 11 can be suppressed.
  • the strand material 11 constituting the outer layer portion 14 is wound six times along the outer peripheral surface of the annular core portion 13.
  • the strand material 11 to be wound around the annular core portion 13 is composed of one strand material 11 continuous with the annular core portion 13, and the strand material 11 is wound around the outer peripheral surface of the annular core portion 13 by substantially winding the strand material 11. It is possible to wrap without wrapping. As a result, the outer layer portion 14 covers the annular core portion 13 densely.
  • the cross section of the annular metal cord C2 has a shape in which six strand members 11 are arranged around the strand member 11 that is the annular core portion 13 as shown in FIG. 18 (a).
  • the strand material 11 constituting the outer layer portion 14 is wound around the outer peripheral surface of the annular core portion 13 in a Z-twist. Since the strand material 11 itself is formed by S twist, the annular metal cord C2 is a combination of S twist structure and Z twist structure. Therefore, the twisting direction of the metal strand 15 and the winding direction of the outer layer portion 14 around the annular core portion 13 are opposite, and it is possible to obtain the annular metal cord C2 with less irregularities in the surface appearance that is difficult to twist.
  • the strand material 11 constituting the outer layer portion 14 is wound at a predetermined winding angle with respect to the central axis of the annular core portion 13. For this reason, the strand material 11 is wound without any disturbance, and an annular metal cord C2 having a substantially uniform surface state can be obtained.
  • the winding angle ⁇ of the strand material 11 with respect to the X direction that is, the direction in which the central axis of the annular core portion 13 extends, is 4.5 degrees or more and 13.8 degrees or less. It has been. When the winding angle ⁇ is 4.5 degrees or more, the strand material 11 is less likely to loosen.
  • the winding angle ⁇ of the strand material 11 of the outer layer portion 14 wound around the annular core portion 13 is set to 4.5 degrees or more and 13.8 degrees or less, so that the annular metal cord C2 has an appropriate elongation and is easy to bend. Can be obtained.
  • an annular metal cord C2 is used, for example, in the endless metal belt, power transmission between the driving pulley and the driven pulley can be performed with high accuracy.
  • connection member 18 As shown in FIG. 19, the winding start end portion 11a and the winding end portion l ib of the strand material 11 constituting the annular core portion 13 and the outer layer portion 14 are coupled to each other by welding, and further The coupling portion 17 is covered with a connection member 18.
  • the connecting member 18 is made of a highly flexible sleeve formed in the shape of a coil spring, so that the connecting member 18 is a joint between the start end 1 la and the end end 1 lb which are both ends of the strand material 11. It is fixed with an adhesive so as to cover the outer periphery of 17.
  • the connecting member 18 having a coil panel-like sleeve force is deformed flexibly according to the curved shape of the strand material 11 to protect and reinforce the welded portion of the strand material 11.
  • connection member 18 formed of a coil spring-like sleeve having excellent flexibility
  • the annular core portion 13 side A state in which the joint 17 between the start end 1 la of the strand material 11 and the end portion l ib of the strand material 11 of the outer layer portion 14 inclined with respect to the start end 1 la is satisfactorily covered according to its shape. Therefore, the connecting portion 17 between the start end portion 11a and the end end portion l ib of the strand material 11 can be well protected.
  • the connecting member 18 does not hinder the deformation of the strand material 11 in the joint portion 17, the flexibility of the strand material 11 between the joint portion 17 and other portions can be made equal, and the mechanical characteristics of the annular metal cord C2
  • the force S is used to make the surface substantially uniform over the entire circumference.
  • the connecting portion 17 between the start end portion 11a and the end end portion ib is arranged on one side of both sides excluding the inner peripheral side and the outer peripheral side of the circular metal cord C2.
  • the load acting on the joint portion 17 can be reduced, and the breakage at the joint portion 17 can be suppressed.
  • the annular metal cord C2 is formed by winding the strand material 11 constituting the outer layer portion 14 around the strand material 11 constituting the annular core portion 13 and then using the connecting member 18 to start the end portion of the strand material 11 It is formed by combining 1 la and a terminal end 1 lb.
  • connecting member 18 of the second embodiment may not be provided with the connecting member 18, and a welding-only connecting structure may be employed. Further, the connecting member 18 of the second embodiment may be provided in the coupling portion 7 of the first embodiment. In any case, since the joined portion of the strand material 11 is covered and protected by the outer layer coating 10, the strength required for the annular metal cord can be ensured.
  • the starting end side of one strand material 11 is curved in an annular shape to form an annular core portion 13.
  • the portion where the two strand materials 11 overlap in the vicinity of the start end portion 11a is temporarily fixed by winding an adhesive tape, string, spring or the like.
  • the annular core portion 13 is moved to the driving unit of the manufacturing apparatus Ml (see FIGS. 7 to 9).
  • the annular core portion 13 is rotated in the circumferential direction, and winding of the strand material 11 around the annular core portion 13 is started.
  • the winding of the strand material 11 is performed as shown in FIG. 11 as in the first embodiment, and the strand material 11 to be the outer layer portion 14 is spirally wound around the outer peripheral surface of the annular core portion 13. It becomes.
  • the winding end portion l ib of the strand material 11 is passed through the connecting member 18 and the temporary fixing in the vicinity of the start end portion 11a is removed, and the start end portion 11a and the end end portion l ib And welded together.
  • an adhesive is applied to the connecting portion 17 between the starting end portion 11a and the terminal end portion l ib, and the connecting member 18 is slid to a position covering the connecting portion 17. In this way, as shown in FIG. 19, the connecting member 18 is fixed to the connecting portion 17 by the adhesive, the connecting portion 17 is protected by the connecting member 18, and breakage at the connecting portion is suppressed.
  • the strand material 11 has an end on the outer peripheral layer 14 side with respect to the start end 11a on the annular core portion 13 side. Since the end portion is inclined, the coupling portion 17 is slightly curved. However, since the connecting member 18 is excellent in flexibility made of a coil panel-like sleeve, the connecting member 18 can be easily attached to the coupling portion 17. Touch with power.
  • the outer layer portion 14 can be provided around the annular core portion 13 by winding the strand material 11 around the annular core portion 13 and joining the start end portion 11a and the end end portion ib. .
  • the annular core portion 13 and the outer layer portion 14 are subjected to a low-temperature annealing treatment in the same manner as in the first embodiment.
  • the internal strain of the metal wire 15 can be removed, and the force S can be obtained to obtain an annular metal cord C2 having no strain.
  • a masking tape is affixed to a predetermined location to be the non-covered portion 10A, and a coating adhesive is applied to the outer peripheral surface of the annular metal cord C2. After solidification, the masking tape is removed.
  • the outer peripheral side of the annular metal cord C2 is covered with the outer layer coating 10, and the non-covered portion 10A is formed on the annular outer peripheral side half surface in the circumferential direction.
  • annular metal cord C2 When such an annular metal cord C2 is used for the endless metal belt, for example, an endless metal belt that rotates without meandering can be obtained. Since endless metal belts that rotate without meandering do not wear due to contact with surrounding parts, they can maintain high performance over a long period of time.
  • the annular metal cord C2 is strong and excellent in breaking strength and fatigue resistance. I can be powerful.
  • the outer layer coating 10 can eliminate the problem that the strand material 11 is scattered, and the outer layer coating 10 becomes a buffer material, so that, for example, at a contact point with a pulley that is bent with a small radius of curvature.
  • the outer layer coating 10 increases the frictional resistance with the mating member with which the annular metal cord C2 comes into contact. Therefore, it is possible to suppress slipping and minimize wear, and to obtain good power transmission efficiency. It can be suitable for use as a belt.
  • the outer coating 10 can be easily formed and reinforced.
  • the lubricant can smoothly permeate from the non-coated portion 10A into the annular core portion 3 and
  • the force S is used to suppress a decrease in strength due to fretting wear and a reduction in life due to fatigue between the outer layer portion 4, between each strand material 11, and between each metal wire 15 constituting each strand material 11.
  • the non-covered portion 10A is formed over the entire circumference in the annular direction, the non-covered portion
  • Lubricant can smoothly penetrate from 10A to the inside, and rigidity is uniform over the entire circumference in the annular direction while suppressing the decrease in strength due to fretting wear and the shortening of life due to fatigue between the strand materials 11 Can be achieved.
  • the hardness (JIS-A) is 22 to 60 and the elongation is 110 to 500%. High reinforcement effect can be obtained.
  • a masking tape is applied to the portion of the annular metal cord C2 that is not to be provided with the outer coating 10 and the masking tape is applied.
  • a coating adhesive which is a coating material, is applied to the outer peripheral surface, and the masking tape is removed after the coating adhesive is solidified, so that it is covered with the outer coating 10 made of the coating adhesive, and is strong and strong.
  • the strand material 11 formed by twisting seven metal strands 15 is wound around the annular core portion 13 and a plurality of spirally wound around the annular core portion 13.
  • the outer layer portion 14 that covers the outer peripheral surface of the core portion 13 is formed, and the annular core portion 13 and the outer layer portion 14 are formed of the continuous strand material 11, so that the annular metal cord C2 is to be strong.
  • the possibility that the annular metal cord C2 is completely broken can be suppressed.
  • the annular core portion 13 is formed from the strand material 11 and the strand material 11 is continuously wound around the annular core portion 13 as a force, the annular metal cord having a high breaking strength can be obtained. Furthermore, since the external force applied to the annular metal cord C2 can be received by the continuous annular core portion 13 and the outer layer portion 14, the applied external force is distributed throughout the annular metal cord C2 and the load is concentrated locally. Can be avoided.
  • the force S that forms the slit-shaped non-covered portion 10A over the entire circumference in the annular direction on the annular outer peripheral side surface of the outer layer coating 10, this non-coated portion 10A is the outer layer.
  • the lubricant can penetrate into the inside from the non-covered portion 10A.
  • the uncovered portion 10A can be reduced as much as possible, the reinforcing effect by the outer layer coating 10 can be enhanced, and the life can be extended.
  • annular metal cord C2 according to the second embodiment is also applied to the endless metal belt shown in FIG.
  • annular metal cord C2 according to the second embodiment can be variously modified without being limited to the above-described embodiment.
  • the outer layer coating 10 may be formed of rubber for tires or belts.
  • the outer layer coating 10 may be formed on the annular metal cord C2 by covering the annular metal cord C2 with rubber. Even when the outer layer coating 10 is formed of rubber, as described in the first embodiment, the annular metal cord C2 is made strong and has excellent breaking strength and fatigue resistance.
  • the excess length portion is formed by temporarily fixing the extra length portion on one end side of the strand material 11.
  • a part of the outer layer portion 14 may be configured.
  • the outer peripheral surface of the annular core portion 13 is covered with one layer of the strand material 11.
  • the outer circumferential surface of the annular core portion 13 may be covered with a plurality of layers of the strand material 11.
  • the strand material 11 is wound around the outer peripheral surface of the annular core portion 13 for six turns to form the first layer, and then the first layer
  • the second layer is formed by winding 12 strands of the strand material 11 around the outer peripheral surface of the wire.
  • the winding direction of 12 turns corresponding to the second layer is preferably opposite to the winding direction of 6 turns corresponding to the first layer. Such a winding direction is important in obtaining good winding properties and obtaining an outer surface with less unevenness.
  • the strand material 11 is S-twisted, and the strand material 11 of the outer layer portion 14 is wound around the annular core portion 13 by Z-twisting.
  • the material 11 may be Z-twisted, and the strand material 11 of the outer layer portion 14 may be wound around the annular core portion 13 by S-twisting! /.
  • the annular metal cord C2 of the second embodiment has a substantially circular cross section, but as described in the first embodiment, the cross section It may be a flat shape [0138] (Third embodiment)
  • annular metal cord C3 has the same annular core portion 3 and outer layer portion 4 as the annular metal cord C1 according to the first embodiment.
  • the outer layer coating 10 is provided on the outer peripheral side of the outer layer portion 4 in different forms.
  • the covering portions 10 covered with the outer layer coating and the non-covering portions 10A that are exposed portions of the outer layer portion 4 without the outer layer coating are alternately formed.
  • the coating portion 10 having this outer layer coating is formed by applying and solidifying the same coating adhesive as in the first and second embodiments.
  • the covering portion 10 is formed of the same rubber as in the first and second embodiments.
  • the covering portion 10 covered with the outer layer covering is longer than the non-covering portion 10A, and includes at least the coupling portion 7 (see FIG. 6) between the winding start end and the winding end end of the outer layer portion 4.
  • the surrounding area is covered with an outer coating!
  • the annular core portion 3 may be provided on the outer peripheral surface thereof with an adhesive solidified portion obtained by solidifying the coating adhesive.
  • the adhesive solidified portion When the adhesive solidified portion is provided, the adhesive solidified portion and the non-adhesive solidified portion without the coating adhesive are alternately formed. Further, the adhesive solidified portion in the annular core portion 3 is longer than the non-adhesive solidified portion, and the non-coated portion 10A without the outer layer coating in the outer layer portion 4 and the non-adhesive solidified portion without the coating adhesive in the annular core portion 3 Are preferably arranged at different positions in the circumferential direction.
  • the same adhesive as the coating adhesive for forming the outer layer coating can be used.
  • the annular core portion 3 has the same configuration as that of the first embodiment, and is formed by joining both ends of the first strand material 1.
  • the outer layer portion 4 has the same configuration as that of the first embodiment, and is formed by winding the second strand material 2 around the annular core portion 3 as an axis.
  • the manufacturing method of the annular metal cord C3 is the same as the manufacturing method of the annular metal cord C1 except that the shapes of the covering portion 10 and the non-covering portion 10A are different.
  • an adhesive solidified portion is provided on the annular core portion 3
  • a predetermined outer peripheral surface of the annular core portion 3 is provided.
  • annular metal cord C3 is used for the endless metal belt B1 (see Fig. 13), for example, an endless metal belt that rotates without meandering can be obtained. Since the endless metal belt that rotates without meandering does not wear due to contact with surrounding parts, high performance can be maintained over a long period of time.
  • the outer layer covering the periphery including the coupling portion 7 between the winding start end portion 2a and the winding end portion 2b of the second strand material 2 constituting the outer layer portion 4 is covered.
  • the ring-shaped metal cord C3 can be made strong, and in particular, the joint 7 between the winding start end 2a and the winding end 2b of the second strand material 2 constituting the outer layer 4 is strongly reinforced. Further, it is possible to eliminate such a problem that the second metal strand 6 constituting the second strand material 2 is scattered.
  • the machine moves from the non-covering portion 10A to the inside.
  • Lubricant such as oil can be smoothly infiltrated, and between the annular core part 3 and the outer layer part 4, between the second strand materials 2 constituting the outer layer part 4 and each of the strand materials 1 and 2 Yes Skills for demonstrating a decrease in strength due to friction between metal wires 5 and 6 and a reduction in life due to fatigue.
  • the covering portion 10 is made longer than the non-covering portion 10A, and the non-covering portion 10A can extend the covering portion 10 as much as possible as the minimum length necessary for the lubricant to penetrate into the inside, thereby reinforcing the effect. As well as prolonging the service life.
  • the non-covered portion 10A is only required to be provided in at least one place in the circumferential direction of the outer layer portion 4. Even in this case, the lubricant can penetrate into the non-covered portion 10A. In this way, the non-covered portion 10A can be reduced as much as possible, the reinforcing effect of the outer layer coating can be enhanced, and the life can be extended.
  • the annular core portion 3 itself Can be reinforced by the adhesive solidifying portion, and the strength of the annular metal cord C3 can be increased. Also, By providing the non-adhesive solidified portion, the lubricant can smoothly penetrate into the annular core portion 3 from the non-adhesive solidified portion, and the first strand material 1 constituting the annular core portion 3 is formed. It is possible to suppress the strength reduction due to friction between the metal strands 1 and the life shortening due to fatigue.
  • the position of the non-adhering solidified portion in the outer covering 1 OA and the annular core 3 is shifted in the circumferential direction to reduce the reinforcing effect as much as possible by providing the non-covering portion 10A and the non-adhesive solidifying portion. Can be suppressed.
  • the outer layer coating made of the coating adhesive or rubber can be formed in the same process as the first embodiment, and the outer layer portion 4 becomes strong and strong. It is easy to manufacture an annular metal cord C3 that does not have a problem that the metal strands 6 constituting the second strand material 2 can be separated.
  • annular metal cord C3 according to the third embodiment can take various forms described in the first embodiment, and they have the same effects as those of the first embodiment.
  • annular metal cord C4 As shown in FIG. 21, the annular metal cord C4 according to the fourth embodiment has the same annular core portion 13 and outer layer portion 14 as the annular metal cord C2 according to the second embodiment.
  • the outer layer coating 10 is provided on the outer peripheral side of the outer layer part 14 in different forms.
  • the covered portions 10 covered with the outer layer coating and the uncovered portions 10A that are the exposed portions of the outer layer portion 14 without the outer layer coating are alternately formed.
  • the coating portion 10 having this outer layer coating is formed by applying and solidifying the same coating adhesive as in the first to third embodiments. Or the coating
  • the annular metal cord C3 according to the third embodiment is composed of the first strand material and the second strand material, whereas the annular metal cord C4 according to the fourth embodiment is composed of one piece. Other than the point that it is made of a strand material, it has a common structure.
  • the manufacturing method of the annular metal cord C4 is the same as the manufacturing method of the annular metal cord C2 except that the forms of the covering portion 10 and the non-covering portion 10A are different.
  • the coating adhesive is solidified by applying and solidifying the coating adhesive at a predetermined position on the outer peripheral surface of the annular core portion 13. The solidified portions and the non-adhesive solidified portions having no coating adhesive are formed alternately.
  • annular metal cord C4 is used for the endless metal belt B1 (see FIG. 13), for example, an endless metal belt that rotates without meandering can be obtained. Since the endless metal belt that rotates without meandering does not wear due to contact with surrounding parts, high performance can be maintained over a long period of time.
  • the periphery including the coupling portion 17 (see Fig. 19) of the winding start end portion 11a and the winding end portion l ib of the strand material 11 constituting the outer layer portion 14 by the outer layer coating is included. Covering, thereby making the annular metal cord C4 durable.
  • the connecting portion 17 between the winding start end portion 1 la and the winding end portion 1 lb of the strand material 11 constituting the outer layer portion 14 can be strongly reinforced, and furthermore, the metal strand 15 constituting the strand material 11 It is possible to eliminate problems such as dispersal.
  • the covering portion 10 covered with the outer layer coating and the non-covering portion 10A without the outer layer coating are alternately formed over the entire circumference and the entire length of the outer layer portion 14, lubrication from the non-covering portion 10A to the inside
  • the agent can be smoothly permeated, between the annular core portion 13 and the outer layer portion 14, between the strand materials 11 constituting the outer layer portion 14 and between each metal strand 15 constituting each strand material 11.
  • the decrease in strength due to friction and the shortening of life due to fatigue can be suppressed, and since the covering portion 10 is made longer than the non-covering portion 10A, the non-covering portion 10A has the minimum amount necessary for the lubricant to penetrate inside.
  • the length of the covering portion 10 can be made as long as possible, so that the reinforcing effect can be enhanced and the life can be extended.
  • the non-covered portion 10A may be provided in at least one place in the circumferential direction of the outer layer portion 14. Even in this case, the lubricant can penetrate from the non-covered portion 10A to the inside. In this way, the non-covered portion 10A can be reduced as much as possible, the reinforcing effect by the outer layer cover 10 can be enhanced, and the life can be extended.
  • the annular core portion 13 itself Glue solid
  • the strength of the annular metal cord C2 can be increased. Further, by providing the non-adhesive solidified portion, the lubricant can smoothly penetrate from the non-adhesive solidified portion into the annular core portion 13, and the metal element constituting the strand material 11 that becomes the annular core portion 13 is provided.
  • the force S suppresses strength reduction due to friction between the wires 15 and shortening of life due to fatigue.
  • the position of the non-adhered solidified portion in the non-coated portion 10A and the annular core portion 13 of the outer layer coating 10 is shifted in the circumferential direction to reduce the reinforcement effect as much as possible by providing the non-coated portion 10A and the non-adhered solidified portion. Can be suppressed.
  • the outer layer coating made of the coating adhesive or rubber can be formed in the same process as the second embodiment, and the outer layer portion 14 becomes strong and strong. It is possible to easily manufacture a ring-shaped metal cord C2 that does not have a defect such that the metal wires 15 constituting the strand material 11 are separated.
  • annular metal cord C4 according to the fourth embodiment can take various forms described in the second embodiment, and they have the same effects as those of the second embodiment. Industrial applicability
  • the force applied to the endless metal belt that transmits the power in the reduction gear to the endless metal belt of the present invention is also applied to the endless metal belt used other than the reduction gear.
  • endless metal belts that transmit power between paper feed rollers endless metal belts that perform direct drive of single-axis robots, XY table mechanism drive, and three-dimensional carriage drive It can be applied to endless metal belts, optical devices, inspection machines, or endless metal belts that perform precision driving in measuring instruments.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ropes Or Cables (AREA)

Abstract

La présente invention concerne un cordon métallique annulaire présentant une grande résistance à la rupture et pouvant être fabriqué facilement, une courroie métallique sans fin et un procédé de fabrication d'un cordon métallique annulaire. Le cordon métallique annulaire (C1) est formé par une section de noyau annulaire (3) et une section de couche externe (4) multipliée de manière hélicoïdale et enveloppée autour de la section de noyau annulaire (3) et recouvrant la périphérie externe de la section de noyau annulaire (3). La section de noyau annulaire (3) est formée dans une forme annulaire par des premier et second éléments de torons (1, 2) formés en réalisant une torsion sur plusieurs fils métalliques (5, 6). Un matériau adhésif en vue d'un revêtement est appliqué et solidifié autour du cordon métallique annulaire (C1) pour recouvrir sa périphérie par un revêtement de couche externe (10) formé à partir du matériau de revêtement élastique.
PCT/JP2007/067983 2006-10-26 2007-09-14 Cordon métallique annulaire, courroie métallique sans fin et procédé de fabrication de cordon métallique annulaire WO2008050554A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/160,202 US20090136697A1 (en) 2006-10-26 2007-09-14 Annular metal cord, endless metal belt, and method of producing annular metal cord

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2006291728 2006-10-26
JP2006-291728 2006-10-26
JP2007050573 2007-02-28
JP2007-050573 2007-02-28
JP2007148298A JP2008240221A (ja) 2006-10-26 2007-06-04 環状金属コード、無端金属ベルト及び環状金属コードの製造方法
JP2007-148298 2007-06-04

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WO2008050554A1 true WO2008050554A1 (fr) 2008-05-02

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WO (1) WO2008050554A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01272833A (ja) * 1988-04-20 1989-10-31 Kanai Hiroyuki 紡機用バルーンコントロールリング
JPH09273088A (ja) * 1996-04-03 1997-10-21 Yokohama Rubber Co Ltd:The ケーブルビードワイヤー
JP2005238997A (ja) * 2004-02-26 2005-09-08 Fuji Seiko Kk タイヤ用ケーブルビードにおける巻線の結合部材、タイヤ用ケーブルビード及び結合方法
JP2005280606A (ja) * 2004-03-30 2005-10-13 Fuji Seiko Kk タイヤ用ケーブルビード

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01272833A (ja) * 1988-04-20 1989-10-31 Kanai Hiroyuki 紡機用バルーンコントロールリング
JPH09273088A (ja) * 1996-04-03 1997-10-21 Yokohama Rubber Co Ltd:The ケーブルビードワイヤー
JP2005238997A (ja) * 2004-02-26 2005-09-08 Fuji Seiko Kk タイヤ用ケーブルビードにおける巻線の結合部材、タイヤ用ケーブルビード及び結合方法
JP2005280606A (ja) * 2004-03-30 2005-10-13 Fuji Seiko Kk タイヤ用ケーブルビード

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