WO2017061100A1 - Vリブドベルト及びその製造方法 - Google Patents
Vリブドベルト及びその製造方法 Download PDFInfo
- Publication number
- WO2017061100A1 WO2017061100A1 PCT/JP2016/004451 JP2016004451W WO2017061100A1 WO 2017061100 A1 WO2017061100 A1 WO 2017061100A1 JP 2016004451 W JP2016004451 W JP 2016004451W WO 2017061100 A1 WO2017061100 A1 WO 2017061100A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- belt
- core wire
- ribbed belt
- dtex
- less
- Prior art date
Links
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- 238000004519 manufacturing process Methods 0.000 title claims description 16
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- 229920000728 polyester Polymers 0.000 claims abstract description 31
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- 229920001971 elastomer Polymers 0.000 claims description 105
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- 238000011282 treatment Methods 0.000 claims description 62
- 238000009998 heat setting Methods 0.000 claims description 29
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- 238000012360 testing method Methods 0.000 description 11
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- 238000010438 heat treatment Methods 0.000 description 9
- 230000008602 contraction Effects 0.000 description 7
- 229920000126 latex Polymers 0.000 description 7
- 239000004816 latex Substances 0.000 description 7
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- 238000007654 immersion Methods 0.000 description 6
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- 239000003431 cross linking reagent Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
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- 238000001035 drying Methods 0.000 description 3
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- 229920003048 styrene butadiene rubber Polymers 0.000 description 3
- 229920002943 EPDM rubber Polymers 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 2
- QUEICCDHEFTIQD-UHFFFAOYSA-N buta-1,3-diene;2-ethenylpyridine;styrene Chemical compound C=CC=C.C=CC1=CC=CC=C1.C=CC1=CC=CC=N1 QUEICCDHEFTIQD-UHFFFAOYSA-N 0.000 description 2
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- 238000002360 preparation method Methods 0.000 description 2
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- 239000006057 Non-nutritive feed additive Substances 0.000 description 1
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- 239000004902 Softening Agent Substances 0.000 description 1
- 239000002174 Styrene-butadiene Substances 0.000 description 1
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- 230000001133 acceleration Effects 0.000 description 1
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- 230000003712 anti-aging effect Effects 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
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- 229920001577 copolymer Polymers 0.000 description 1
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- 239000004744 fabric Substances 0.000 description 1
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- 239000000446 fuel Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 229920002681 hypalon Polymers 0.000 description 1
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- 229920000573 polyethylene Polymers 0.000 description 1
- 239000011112 polyethylene naphthalate Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- YBBRCQOCSYXUOC-UHFFFAOYSA-N sulfuryl dichloride Chemical compound ClS(Cl)(=O)=O YBBRCQOCSYXUOC-UHFFFAOYSA-N 0.000 description 1
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- 239000002759 woven fabric Substances 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
Images
Classifications
-
- 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
- F16G5/00—V-belts, i.e. belts of tapered cross-section
- F16G5/20—V-belts, i.e. belts of tapered cross-section with a contact surface of special shape, e.g. toothed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D29/00—Producing belts or bands
- B29D29/10—Driving belts having wedge-shaped cross-section
- B29D29/103—Multi-ribbed driving belts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/04—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B25/042—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material of natural rubber or synthetic rubber
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
- D01F6/62—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
- D02G3/26—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre with characteristics dependent on the amount or direction of twist
- D02G3/28—Doubled, plied, or cabled threads
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/44—Yarns or threads characterised by the purpose for which they are designed
- D02G3/447—Yarns or threads for specific use in general industrial applications, e.g. as filters or reinforcement
-
- 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
- F16G5/00—V-belts, i.e. belts of tapered cross-section
- F16G5/04—V-belts, i.e. belts of tapered cross-section made of rubber
- F16G5/06—V-belts, i.e. belts of tapered cross-section made of rubber with reinforcement bonded by the rubber
- F16G5/08—V-belts, i.e. belts of tapered cross-section made of rubber with reinforcement bonded by the rubber with textile reinforcement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/02—Composition of the impregnated, bonded or embedded layer
- B32B2260/021—Fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/04—Impregnation, embedding, or binder material
- B32B2260/048—Natural or synthetic rubber
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/546—Flexural strength; Flexion stiffness
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2413/00—Belts
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2505/00—Industrial
- D10B2505/02—Reinforcing materials; Prepregs
Definitions
- the present invention relates to a V-ribbed belt and a manufacturing method thereof.
- Patent Document 1 discloses a V-ribbed belt in which a core wire composed of polybutylene terephthalate fibers having a total fineness of 4000 dtex or more and 12000 dtex or less is embedded.
- Patent Document 2 discloses a V-ribbed belt in which a core wire made of polyethylene terephthalate fiber is embedded and the fineness per 1 mm width of the belt is 2000 dtex / mm or more and 5000 dtex / mm or less.
- a rubber V-ribbed belt main body provided such that a plurality of V-ribs extending in the belt length direction are arranged in parallel in the belt width direction, and a spiral having a pitch in the belt width direction in the V-ribbed belt.
- the time contraction force is 44 N or more.
- the present invention is a belt transmission device in which the V-ribbed belt of the present invention is wound around a plurality of pulleys.
- the present invention is a method for producing a V-ribbed belt according to the present invention, wherein the core wire is subjected to a stretching heat setting process in which a tension is applied and stretched in an adhesive treatment in which the core wire is immersed and heated, and The stretching ratio in the stretching heat setting treatment is set to be larger than 6.0%.
- V-ribbed belt It is a perspective view of the V-ribbed belt which concerns on embodiment. It is sectional drawing for one V rib of the V ribbed belt which concerns on embodiment. It is the 1st explanatory view showing the manufacturing method of the V ribbed belt concerning an embodiment. It is the 2nd explanatory view showing the manufacturing method of the V ribbed belt concerning an embodiment. It is the 3rd explanatory view showing the manufacturing method of the V ribbed belt concerning an embodiment. It is a 4th explanatory view showing the manufacturing method of the V ribbed belt concerning an embodiment. It is a 5th explanatory view showing the manufacturing method of the V ribbed belt concerning an embodiment. It is a figure which shows the pulley layout of the auxiliary machine drive belt transmission of a motor vehicle.
- V-ribbed belt B 1 and 2 show a V-ribbed belt B according to an embodiment.
- the V-ribbed belt B according to the embodiment is, for example, an endless belt used for an auxiliary machine driving belt transmission provided in an engine room of an automobile.
- the V-ribbed belt B according to the embodiment has, for example, a belt length of 700 mm to 3000 mm, a belt width of 10 mm to 36 mm, and a belt maximum thickness of 4.0 mm to 5.0 mm.
- the V-ribbed belt B is made of rubber that is formed of a triple layer of a compression rubber layer 11 that constitutes a pulley contact portion on the inner peripheral side of the belt, an intermediate adhesive rubber layer 12, and a back rubber layer 13 on the outer peripheral side of the belt.
- the V-ribbed belt main body 10 is provided, and a core wire 14 is embedded in an intermediate portion in the thickness direction of the adhesive rubber layer 12 of the V-ribbed belt main body 10 so as to form a spiral having a pitch in the belt width direction.
- the compressed rubber layer 11 and the adhesive rubber layer 12 may constitute the V-ribbed belt main body 10 and a configuration in which a reinforcing cloth is provided instead of the back rubber layer 13 may be used.
- the compressed rubber layer 11 is provided such that a plurality of V ribs 15 hang down to the inner peripheral side of the belt, and the maximum thickness is, for example, not less than 3.5 mm and not more than 5.0 mm.
- the plurality of V ribs 15 are each formed in a ridge having a substantially inverted triangular cross section extending in the belt length direction, and provided in parallel in the belt width direction.
- the height of the V rib 15 is not less than 2.0 mm and not more than 3.0 mm, and the belt width for one V rib 15 is typically 3.56 mm.
- the number of V ribs 15 is, for example, 3 or more and 6 or less (6 in FIG. 1).
- the adhesive rubber layer 12 is formed in a band shape having a horizontally long cross section, and has a thickness of, for example, 1.0 mm to 2.5 mm.
- the back rubber layer 13 is also configured in a band shape having a horizontally long cross section, and has a thickness of, for example, 0.4 mm or more and 0.8 mm or less.
- the surface of the back rubber layer 13 is preferably formed in a form in which the texture of the woven fabric is transferred from the viewpoint of suppressing the sound generated between the back rubber layer 13 and the flat pulley in contact with the belt back surface.
- the compression rubber layer 11, the adhesive rubber layer 12, and the back rubber layer 13 are rubber compositions obtained by heating and pressurizing an uncrosslinked rubber composition in which various compounding agents are blended in a rubber component and then crosslinking with a crosslinking agent. It is formed of things. This rubber composition may be either crosslinked with sulfur as a crosslinking agent or crosslinked with an organic peroxide as a crosslinking agent.
- the compressed rubber layer 11, the adhesive rubber layer 12, and the back rubber layer 13 may be formed of different rubber compositions or may be formed of the same rubber composition.
- the back rubber layer 13 is preferably made of a rubber composition slightly harder than the adhesive rubber layer 12 from the viewpoint of suppressing the occurrence of adhesion due to contact with the flat pulley with which the belt back contacts.
- Examples of the rubber component of the rubber composition forming the compression rubber layer 11, the adhesive rubber layer 12, and the back rubber layer 13 include ethylene- ⁇ -olefin elastomer (EPDM, EPR, etc.), chloroprene rubber (CR), chlorosulfone. And polyethylene rubber (CSM) and hydrogenated acrylonitrile rubber (H-NBR).
- Examples of the compounding agent include a reinforcing material, a filler, a softening agent, a processing aid, a vulcanization acceleration aid, a crosslinking agent, a vulcanization accelerator, and an antiaging agent.
- the rubber composition forming the compressed rubber layer 11 may contain short fibers such as nylon short fibers.
- the short fibers are preferably included in the compressed rubber layer 11 so as to be oriented in the belt width direction, and the short fibers are preferably provided so as to protrude from the surface of the compressed rubber layer 11.
- the rubber composition that forms the compressed rubber layer 11 may not have a configuration including short fibers, but may have a configuration in which the short fibers are attached to the surface of the V rib 15 of the compressed rubber layer 11.
- the core wire 14 is composed of a filament yarn of polyester fiber.
- the polyester fibers constituting the core wire 14 include polyethylene terephthalate fibers, polyethylene naphthalate fibers, polypropylene terephthalate fibers, polybutylene terephthalate fibers, and fibers of one or more types of these copolymers. It is done.
- the core wire 14 may be composed of a single type of polyester fiber, or may be composed of a mixture of a plurality of types of polyester fiber.
- the fineness of the filament of the polyester fiber constituting the core wire 14 is, for example, 4.4 dtex or more and 6.6 dtex or less, and the filament diameter is, for example, 20 ⁇ m or more and 25 ⁇ m or less.
- the total fineness of the polyester fibers constituting the core wire 14 is 2200 dtex or more and 5500 dtex or less, and preferably 3300 dtex or more from the viewpoint of suppressing a decrease in belt tension. Further, the belt bending rigidity is lowered to increase efficiency. From the viewpoint of aiming, it is preferably 4400 dtex or less.
- the outer diameter D of the core wire 14 is preferably 0.50 mm or more, more preferably 0.60 mm or more, and further preferably 0.70 mm or more from the viewpoint of suppressing a decrease in belt tension. From the viewpoint of increasing the efficiency by reducing the thickness, it is preferably 1.00 mm or less, more preferably 0.95 mm or less, and still more preferably 0.85 mm or less.
- the pitch P of the core 14 in the belt width direction is determined by the distance from the core 14 to the adhesive rubber layer 12 of the V-ribbed belt body 10. From the viewpoint of obtaining sufficient adhesiveness, it is preferably 0.70 mm or more, more preferably 0.75 mm or more, and still more preferably 0.85 mm or more, and from the viewpoint of suppressing a decrease in belt tension, preferably 1. It is 10 mm or less, More preferably, it is 1.05 mm or less, More preferably, it is 0.95 mm or less.
- the distance (PD) between the cores 14 adjacent to each other in the belt width direction is preferably 0.08 mm from the viewpoint of obtaining sufficient adhesion of the core 14 to the adhesive rubber layer 12 of the V-ribbed belt body 10. As mentioned above, it is more preferably 0.13 mm or more, and preferably 0.20 mm or less, more preferably 0.15 mm or less from the viewpoint of suppressing a decrease in belt tension.
- the fineness of the core wire 14 is 10,000 dtex or more and 19000 dtex or less per belt width of one V rib 15, and preferably 13500 dtex or more from the viewpoint of suppressing a decrease in belt tension. In addition, from the viewpoint of improving the efficiency by lowering the belt bending rigidity, it is preferably 16500 dtex or less.
- the fineness of the core wire 14 per belt width of one V rib 15 can be obtained by dividing the sum of the fineness of the core wires 14 arranged in the belt width direction by the number of V ribs 15.
- Examples of the yarn configuration of the core wire 14 include various twisted yarns, single twisted yarns, rung twisted yarns, and braids. Of these, twisted yarns are preferred.
- the plied yarns are a collection of a plurality of lower twisted yarns obtained by twisting a fiber bundle of a predetermined fineness composed of one or a plurality of yarns in one direction at a predetermined lower twist number, and the plurality of the lower twisted yarns in the lower twist direction. Is a yarn twisted with a predetermined number of twists in the opposite direction.
- the number of yarns included in the lower twisted yarn is preferably one or two from the viewpoint of the balance between high efficiency and suppression of belt tension reduction. is there. From the same viewpoint, the fineness of the lower twisted yarn is preferably 1100 dtex.
- the number of lower twists is preferably 25 times / 10 cm or more, more preferably 28 times / 10 cm or more, and preferably 32 times / 10 cm or less, more preferably 29 times / 10 cm or less.
- the twist coefficient of the lower twist is preferably 700 or more, more preferably 800 or more, and preferably 1100 or less, more preferably 1000 or less.
- a twist coefficient is calculated
- the number of lower plied yarns is preferably 2 from the viewpoint of improving efficiency and suppressing the decrease in belt tension. As described above, the number is more preferably 3, and the number is preferably 5 or less, more preferably 4 or less. From the same viewpoint, the number of twists is preferably 8 times / 10 cm or more, more preferably 10 times / 10 cm or more, still more preferably 13 times / 10 cm or more, and preferably 23 times / 10 cm or less, more preferably Is 21 times / 10 cm or less, more preferably 18 times or less.
- the twist coefficient of the upper twist is preferably 700 or more, more preferably 800 or more, and preferably 1100 or less, more preferably 1000 or less.
- the twist coefficient of the upper twist is preferably the same as the twist coefficient of the lower twist.
- the cords 14 of the various twisted yarns may be either S-twisted yarn having an upper twist of S twist or Z-twisted yarn having an upper twist of Z twist. Further, the core wires 14 of the plied yarns may be provided so that both the S twisted yarn and the Z twisted yarn form a double helix.
- the belt shrinkage force at the time of dry heat is 44 N or more per belt width of one V rib 15, and is preferably 45 N or more from the viewpoint of suppressing a decrease in belt tension. Also, from the viewpoint of practicality, it is preferably 55N or less, more preferably 51N or less, and still more preferably 47N or less.
- the shrinkage force during dry heat is obtained by applying a load of 6N in the belt length direction for a belt length of 300 mm under an atmosphere of 150 ° C. using a test piece having a belt width corresponding to one or a plurality of V ribs 15. It is determined as the amount of increase in load 30 minutes after loading and fixing. When the test piece has a belt width corresponding to a plurality of V ribs 15, the load increase amount is divided by the number of V ribs 15.
- the belt bending rigidity EI obtained based on the following formula (2) is preferably 0.045 N ⁇ m 2 or more, more preferably 0.050 N per belt width of one V rib 15 from the viewpoint of practicality.
- ⁇ M 2 or more more preferably 0.060 N ⁇ m 2 or more, and from the viewpoint of high efficiency, preferably 0.080 N ⁇ m 2 or less, more preferably 0.075 N ⁇ m 2 or less, and still more preferably Is 0.070 N ⁇ m 2 or less.
- the V-ribbed belt provided in the engine room of the automobile is required to be highly efficient under the same usage environment as before.
- it is effective to reduce the belt rigidity by reducing the core wire.
- the total fineness of the core wire 14 made of polyester fiber is as thin as 2200 dtex or more and 5500 dtex or less, so that high efficiency can be achieved.
- the fineness of the core wire 14 is 10000 dtex or more and 19000 dtex or less per belt width of one V-rib, and 6N in the belt length direction with respect to a belt length of 300 mm in an atmosphere of 150 ° C.
- the belt contraction force at the time of dry heat which is the amount of increase in the load 30 minutes after the load is fixed, is 44 N or more, so that the belt tension is prevented from being lowered and can be sufficiently put into practical use.
- the manufacturing method of the V-ribbed belt B according to the embodiment includes a material preparation process, a material setting process, a vulcanization molding process, a grinding process, and a width cutting process.
- ⁇ Material preparation process> Each compound is blended with a rubber component and kneaded with a kneader such as a kneader or a Banbury mixer, and the resulting uncrosslinked rubber composition is molded into a sheet by calendering or the like to form an uncrosslinked rubber sheet for a compressed rubber layer 11 ′ is produced.
- a kneader such as a kneader or a Banbury mixer
- the core wire 14 ′ is subjected to an adhesion treatment in which the core wire 14 ′ is immersed in an adhesive such as an RFL aqueous solution and heated, and a stretching heat setting treatment in which tension is applied and stretched.
- an adhesion treatment in which the core wire 14 ′ is immersed in an adhesive such as an RFL aqueous solution and heated, and a stretching heat setting treatment in which tension is applied and stretched.
- the RFL aqueous solution is a mixture of latex with an initial condensate of resorcin and formaldehyde.
- the liquid temperature of the RFL aqueous solution is, for example, 20 ° C. or higher and 30 ° C. or lower.
- the solid content concentration of the RFL aqueous solution is, for example, 30% by mass or less.
- the immersion time of the core wire 14 'in the RFL aqueous solution is, for example, 1 second or more and 3 seconds or less.
- the heating temperature (furnace temperature) after immersion in the RFL aqueous solution is, for example, 200 ° C. or more and 250 ° C. or less.
- the heating time (residence time in the furnace) is, for example, 1 minute or more and 3 minutes or less.
- the tension applied to the core wire 14 ′ for the stretching heat setting process during the adhesion process using the RFL aqueous solution is 0.91 cN / dtex or more and 1.67 cN / dtex or less.
- the number of adhesion treatments of the core wire 14 ′ with the RFL aqueous solution may be only once or may be two or more.
- RFL solid matter adheres to the inside and the surface of the core wire 14 ′, and the attached amount (weight per unit area) of the V-ribbed belt body of the core wire 14 is based on the mass of the polyester fiber constituting the core wire 14 ′.
- it is preferably 4% by mass or more, more preferably 6% by mass or more, and still more preferably 6.5% by mass or more.
- it is preferably 10% by mass or less, more preferably 8% by mass or less, and still more preferably 7.5% by mass or less.
- an adhesion treatment in which epoxy or isocyanate (block isocyanate) is dissolved in a solvent such as toluene or immersed in a primer solution and heated before the adhesion treatment with an RFL aqueous solution. May be applied.
- the temperature of the primer solution is, for example, 20 ° C. or higher and 30 ° C. or lower.
- the solid content concentration of the primer solution is, for example, 20% by mass or less.
- the immersion time of the core wire 14 'in the primer solution is, for example, 1 second or more and 3 seconds or less.
- the heating temperature (furnace temperature) after immersion in the primer solution is, for example, 200 ° C. or higher and 250 ° C. or lower.
- the heating time (residence time in the furnace) is, for example, 1 minute or more and 3 minutes or less.
- the tension applied to the core wire 14 ′ for the stretching heat setting process during the bonding process using the primer solution is, for example, 0.30 cN / dtex or more and 0.61 cN / dtex or less.
- the number of times of the adhesion treatment with the primer solution of the core wire 14 ′ may be only once or may be two times or more.
- the amount of attachment (weight per unit area) of the V-ribbed belt body of the core wire 14 is based on the mass of the polyester fiber constituting the core wire 14 ′.
- it is preferably 2% by mass or more, more preferably 3% by mass or more, and from the viewpoint of increasing the efficiency by reducing the belt bending rigidity.
- the core wire 14 ′ may be subjected to an adhesion treatment in which an unvulcanized rubber composition is dipped in a rubber paste dissolved in a solvent such as toluene and dried by heating after the adhesion treatment with the RFL aqueous solution.
- the temperature of the rubber paste is, for example, 20 ° C. or higher and 30 ° C. or lower.
- the solid content concentration of the rubber paste is, for example, 20% by mass or less.
- the immersion time of the core wire 14 ′ in the rubber paste is, for example, not less than 1 second and not more than 3 seconds.
- the drying temperature (furnace temperature) after immersion in rubber paste is, for example, 50 ° C. or higher and 100 ° C. or lower.
- the drying time (residence time in the furnace) is, for example, 1 minute or more and 3 minutes or less.
- the tension applied to the core wire 14 ′ during the adhesive treatment with rubber glue is, for example, not less than 0.30 cN / dtex and not more than 0.61 cN / dtex.
- the number of times of bonding with the rubber paste of the core wire 14 ′ may be one time or may be two times or more.
- a glue rubber film adheres to the surface of the core wire 14 ', and the amount of attachment (weight per unit area) is, for example, 2% by mass or more and 5% by mass or less based on the mass of the polyester fiber constituting the core wire 14'. is there.
- the stretching rate in the stretching heat setting process performed during the bonding process on the core wire 14 ′ is to reduce the belt tension by reducing the belt bending rigidity by suppressing the impregnation of the adhesive and reducing the belt tension. From the viewpoint of suppression, it is preferably larger than 6.0%, more preferably 6.2% or more, still more preferably 6.5% by mass or more, and from the viewpoint of practicality, preferably 7.5%. Hereinafter, it is more preferably 7.2% or less, still more preferably 7.0% or less.
- the shrinkage stress during drying of the core wire 14 ′ after the adhesion treatment and the stretching heat setting treatment is preferably 0.20 cN / dtex or more, more preferably 0.25 cN / dtex or more, From the viewpoint of practicality, it is preferably 0.50 cN / dtex or less, more preferably 0.45 cN / dtex or less, and 0.35 cN / dtex or less.
- the shrinkage stress during dry heat is obtained based on JIS L1017.
- an uncrosslinked rubber sheet 13 ′ for the back rubber layer and an uncrosslinked rubber sheet 12 ′ for the adhesive rubber layer are sequentially wound on the outer periphery of the cylindrical mold 21 and laminated thereon.
- a core wire 14 'that has been subjected to an adhesion treatment and a stretching heat setting treatment is wound around the cylindrical mold 21 with a certain tension spirally wound thereon, and an uncrosslinked rubber sheet 12' for the adhesive rubber layer is further wound thereon.
- a layered product B ′ is formed by sequentially winding and laminating uncrosslinked rubber sheets 11 ′ for the compressed rubber layer.
- the tension at the time of winding the core wire 14 ′ is preferably 0.18 N / dtex or more, more preferably 0.20 N / dtex or more from the viewpoint of suppressing a decrease in belt tension, and from the viewpoint of practicality, Preferably it is 0.27 N / dtex or less, More preferably, it is 0.25 N / dtex or less.
- the laminated body B ′ is covered with a rubber sleeve 22, placed in a vulcanizing can and sealed, and filled with high-temperature and high-pressure steam in a vulcanizing can. Hold for molding time only.
- the crosslinking of the uncrosslinked rubber sheets 11 ′, 12 ′, and 13 ′ proceeds and integrates and is combined with the core wire 14 ′, and finally, the cylindrical belt slab S Is molded.
- the molding temperature of the belt slab S is, for example, 100 ° C. to 180 ° C.
- the molding pressure is, for example, 0.5 MPa to 2.0 MPa
- the molding time is, for example, 10 minutes to 60 minutes.
- FIG. 8 shows a pulley layout of an auxiliary drive belt transmission device 30 for an automobile using the V-ribbed belt B according to the first embodiment.
- This accessory drive belt transmission device 30 is of a serpentine drive type in which a V-ribbed belt B is wound around six pulleys, four rib pulleys and two flat pulleys, to transmit power.
- the auxiliary drive belt transmission device 30 is provided with a power steering pulley 31 of a rib pulley at the uppermost position, and an AC generator pulley 32 of a rib pulley is provided below the power steering pulley 31.
- a flat pulley tensioner pulley 33 is provided at the lower left of the power steering pulley 31, and a flat pulley water pump pulley 34 is provided below the tensioner pulley 33.
- a ribshaft crankshaft pulley 35 is provided on the lower left side of the tensioner pulley 33, and a rib pulley air conditioner pulley 36 is provided on the lower right side of the crankshaft pulley 35.
- These pulleys are made of, for example, a metal stamped product, a cast, a resin molded product such as a nylon resin, a phenol resin, or the like, and have a pulley diameter of 50 mm to 150 mm.
- the V-ribbed belt B is wound around the power steering pulley 31 so that the V-rib 15 side contacts, and then wound around the tensioner pulley 33 so that the back side of the belt contacts. Further, the crankshaft pulley 35 and the air conditioner pulley 36 are wound around in order so that the V rib 15 side comes into contact, and further, they are wound around the water pump pulley 34 so that the back side of the belt comes into contact, and the V rib 15 side comes into contact. Is wound around an AC generator pulley 32 and finally returned to the power steering pulley 31.
- the belt span length which is the length of the V-ribbed belt B spanned between the pulleys, is, for example, not less than 50 mm and not more than 300 mm. Misalignment that may occur between the pulleys is 0 ° or more and 2 ° or less.
- V-ribbed belt V-ribbed belts of Examples 1 to 4 and Comparative Examples 1 to 5 below were produced. The respective configurations are also shown in Tables 1 and 2.
- Example 1 Collect two lower twisted yarns of 1100 tex polyester fiber bundle (manufactured by Teijin Ltd.) twisted in the S direction at a lower twist number (twisting factor 900) of 28.6 times / 10 cm, and these two lower twisted yarns in the Z direction A core wire of various twisted yarns was prepared by first twisting with 20.2 times / 10 cm of the upper twist number (twist coefficient 900).
- the core wire was subjected to an adhesive treatment in which it was immersed in a primer solution for heating, an adhesive treatment in which it was immersed in an RFL aqueous solution for heating, and an adhesive treatment in which it was immersed in rubber glue for heating.
- a primer solution an isocyanate resin toluene solution was used, and the number of times of adhesion treatment was one.
- RFL aqueous solution one having a latex component of vinylpyridine styrene butadiene rubber latex was used, and the number of times of adhesion treatment was two.
- the rubber paste a rubber composition for forming an adhesive rubber layer dissolved in toluene was used, and the number of times of adhesion treatment was one.
- a stretching heat setting treatment was performed so that the stretching ratio was 7.2%.
- the amount of resin solids attached to the primer solution (weight per unit area) is 4.0% by mass, based on the mass of the polyester fiber constituting the core, and the RFL solids using the RFL aqueous solution.
- the adhesion amount (weight per unit area) of the product was 8.0% by mass, and the adhesion amount (weight per unit area) of the glue rubber film with rubber paste was 4.0% by mass.
- the shrinkage stress at the time of dry heat of the core wire after the adhesion treatment and the stretching heat setting treatment obtained based on JIS L1017 was 0.43 cN / dtex.
- a V-ribbed belt was produced by the same method as in the above embodiment using this core wire subjected to the adhesion treatment and the stretching heat setting treatment.
- the tension when winding the core wire was 0.23 cN / dtex
- the pitch P in the belt width direction of the core wire was 0.75 mm.
- the outer diameter D of the core wire is 0.60 mm
- the distance (PD) between the core wires adjacent to each other in the belt width direction is 0.15 mm
- the core wire per belt width for one V-rib The fineness was 10443 dtex.
- the compression rubber layer, the adhesive rubber layer, and the back rubber layer were formed of a rubber composition containing EPDM as a rubber component.
- the belt circumference is 1200 mm
- the belt thickness is 4.3 mm
- the belt width of one V-rib is 3.56 mm
- the number of V-ribs is 2 (belt width 7.12 mm)
- 4 (belt width) 14.24 mm) and 6 sizes were produced.
- Example 2 Three pieces of the 1100 tex polyester fiber bundle twisted in the S direction with 28.6 times / 10cm of the number of twists (twisting factor 900) were collected, and the three pieces of the lower twisted yarn were 16.5 times in the Z direction. / 10cm using twisted cores of twisted yarn (twisting factor 900), 6.8% stretch rate by stretching heat setting process, and the core P pitch P in the belt width direction is 0.85mm Except for the above, a V-ribbed belt was produced in the same manner as in Example 1 and designated as Example 2.
- the amount of resin solid matter attached (primary amount) by the primer solution based on the mass of the polyester fiber constituting the core wire is 4.0% by mass
- the RFL solid matter by the RFL aqueous solution The adhesion amount (weight per unit area) was 7.0% by mass, and the adhesion amount (weight per unit area) of the glue rubber film by rubber paste was 3.6% by mass.
- the shrinkage stress during dry heat of the core wire after the adhesion treatment and the stretching heat setting treatment was 0.32 cN / dtex.
- the outer diameter D of the core wire is 0.71 mm
- the distance between the core wires adjacent to each other in the belt width direction (P ⁇ D) is 0.14 mm
- the per belt width of one V rib was 13821 dtex.
- Example 3 Collect 4 pieces of 1x tex polyester fiber bundle twisted 28.6 times / 10cm in the S direction (twisting factor 900) and 4 times in the Z direction. / 10cm, using twisted strands of twisted yarn with a twist of 900cm (twisting factor 900), stretching ratio of 6.8% by stretching heat setting treatment, and pitch P in the belt width direction of the strands of 0.95mm Except for the above, a V-ribbed belt was produced in the same manner as in Example 1 and designated as Example 3.
- the amount of resin solid matter attached (primary amount) by the primer solution based on the mass of the polyester fiber constituting the core wire is 4.0% by mass
- the RFL solid matter by the RFL aqueous solution The adhesion amount (weight per unit area) was 6.5% by mass, and the adhesion amount (weight per unit area) of the glue rubber film with rubber paste was 3.3% by mass.
- the shrinkage stress at the time of dry heat of the core wire after the adhesion treatment and the stretching heat setting treatment was 0.29 cN / dtex.
- the outer diameter D of the core wire is 0.82 mm
- the distance between the core wires adjacent to each other in the belt width direction (P ⁇ D) is 0.13 mm
- the per belt width of one V rib was 16488 dtex.
- Example 4 Collect 5 pieces of 1100 tex polyester fiber bundle twisted 28.6 times / 10cm in the S direction with a twist number of 900cm (twisting factor 900), and 12.8 times those 5 twisted yarns in the Z direction. / 10cm using twisted strands of twisted yarn (twisting coefficient 900), stretching rate by stretching heat fixing treatment is 6.2%, and pitch P in the belt width direction of the strand is 1.05mm Except for the above, a V-ribbed belt was produced in the same manner as in Example 1 and designated as Example 4.
- the amount of resin solid matter attached (primary amount) by the primer solution based on the mass of the polyester fiber constituting the core wire is 4.0% by mass
- the RFL solid matter by the RFL aqueous solution The adhesion amount (weight per unit area) was 6.0% by mass, and the adhesion amount (weight per unit area) of the glue rubber film with rubber paste was 3.0% by mass.
- the shrinkage stress during dry heat of the core wire after the adhesion treatment and the stretching heat setting treatment was 0.27 cN / dtex.
- the outer diameter D of the core wire is 0.91 mm
- the distance between the core wires adjacent to each other in the belt width direction (P ⁇ D) is 0.14 mm
- the per belt width for one V-rib was 18684 dtex.
- the amount of resin solid matter attached (primary amount) by the primer solution based on the mass of the polyester fiber constituting the core wire is 4.0% by mass
- the RFL solid matter by the RFL aqueous solution The adhesion amount (weight per unit area) was 5.7% by mass, and the adhesion amount (weight per unit area) of the glue rubber film with rubber paste was 2.8% by mass.
- the shrinkage stress during dry heat of the core wire after the adhesion treatment and the stretching heat setting treatment was 0.28 cN / dtex.
- the outer diameter D of the core wire is 1.00 mm
- the distance (PD) between the core wires adjacent to each other in the belt width direction is 0.15 mm
- the per belt width for one V-rib was 19800 dtex.
- the amount of resin solid matter attached (primary amount) by the primer solution based on the mass of the polyester fiber constituting the core wire is 4.0% by mass
- the RFL solid matter by the RFL aqueous solution The adhesion amount (weight per unit area) was 5.7% by mass, and the adhesion amount (weight per unit area) of the glue rubber film with rubber paste was 2.8% by mass.
- the shrinkage stress during dry heat of the core wire after the adhesion treatment and the stretching heat setting treatment was 0.27 cN / dtex.
- the outer diameter D of the core wire is 1.15 mm
- the distance (P ⁇ D) between the core wires adjacent to each other in the belt width direction is 0.15 mm
- the fineness of the core wire was 19800 dtex.
- the amount of resin solid matter attached (primary amount) by the primer solution based on the mass of the polyester fiber constituting the core wire is 4.0% by mass
- the RFL solid matter by the RFL aqueous solution The adhesion amount (weight per unit area) was 6.5% by mass, and the adhesion amount (weight per unit area) of the glue rubber film with rubber paste was 3.3% by mass.
- the shrinkage stress during dry heat of the core wire after the adhesion treatment and the stretching heat setting treatment was 0.26 cN / dtex.
- the outer diameter D of the core wire is 0.82 mm
- the distance between the core wires adjacent to each other in the belt width direction (P ⁇ D) is 0.13 mm
- the per belt width of one V rib was 16488 dtex.
- the amount of resin solid matter attached (primary amount) by the primer solution based on the mass of the polyester fiber constituting the core wire is 4.0% by mass
- the RFL solid matter by the RFL aqueous solution The adhesion amount (weight per unit area) was 7.0% by mass, and the adhesion amount (weight per unit area) of the glue rubber film by rubber paste was 3.6% by mass.
- the shrinkage stress during dry heat of the core wire after the adhesion treatment and the stretching heat setting treatment was 0.27 cN / dtex.
- the outer diameter D of the core wire is 0.71 mm
- the distance between the core wires adjacent to each other in the belt width direction (P ⁇ D) is 0.14 mm
- the per belt width of one V rib was 13821 dtex.
- the amount of resin solid matter attached (primary amount) by the primer solution based on the mass of the polyester fiber constituting the core wire is 4.0% by mass
- the RFL solid matter by the RFL aqueous solution The adhesion amount (weight per unit area) was 8.0% by mass, and the adhesion amount (weight per unit area) of the glue rubber film with rubber paste was 4.0% by mass.
- the shrinkage stress at the time of dry heat of the core wire after the adhesion treatment and the stretching heat setting treatment was 0.34 cN / dtex.
- the outer diameter D of the core wire is 0.60 mm
- the distance (PD) between the core wires adjacent to each other in the belt width direction is 0.15 mm
- the per belt width of one V rib was 0.10443 dtex.
- FIG. 10A and 10B show a belt power loss measuring device 50.
- FIG. 10A and 10B show a belt power loss measuring device 50.
- the belt power loss measuring device 50 includes a rib pulley driving pulley 51 having a pulley diameter of 50 mm and a rib pulley driven pulley 52 having a pulley diameter of 50 mm provided on the right side thereof.
- the drive pulley 51 is attached to one end of a drive shaft 51b rotatably provided by a pair of support shafts 51a provided at intervals, and a rotation imparting pulley 51c is provided at the other end of the drive shaft 51b. It has been.
- a motor pulley 53b that is pivotally supported by the motor shaft 53a of the drive motor 53 is provided on the right side of the rotation imparting pulley 51c.
- a rotation drive belt 54 is wound around the rotation imparting pulley 51c and the motor pulley 53b. Yes.
- a torque meter 55 for detecting the rotational torque of the drive shaft 51b is provided between the pair of support shafts 51a.
- the driven pulley 52 is attached to one end of a drive shaft 52b that is rotatably provided by a pair of support shafts 52a that are spaced apart from each other, and the entirety thereof is movably provided in the left-right direction.
- the V-ribbed belt having two V-ribs in each of Examples 1 to 4 and Comparative Examples 1 to 5 is wound around the drive pulley 51 and the driven pulley 52 and has a dead weight of 600 N on the right side of the driven pulley 52 ( DW) was loaded, and the belt was run by rotating the driving pulley 51 at a rotational speed of 3000 rpm by the driving motor 53 in a room temperature atmosphere, and the driving torque at that time was measured with a torque meter 55. Similarly, the driving torque was measured for V-ribbed belts having 4 and 6 V-ribs. In order to measure a stable driving torque by eliminating the influence of heat generation or the like, the measurement was performed after running the belt for 1 hour.
- the belt bending stiffness was determined using an Olsen bending tester in the same manner as described above.
- the loss torque was subtracted from each measured value of the drive torque.
- the power was converted, and the average power obtained by dividing the power by the number of V ribs was obtained to determine the belt power loss per belt width for one V rib.
- FIG. 11 shows a pulley layout of the belt running test machine 60.
- This belt running test machine 60 is provided with a drive pulley 61 of a rib pulley having a pulley diameter of 120 mm, a first driven pulley 62 of a rib pulley having a pulley diameter of 120 mm provided above it, and a right side in the middle in the vertical direction thereof. And a second driven pulley 63 of a rib pulley having a pulley diameter of 45 mm. The second driven pulley 63 is positioned so that the belt winding angle is 90 °.
- the belt running tester 60 was set, and the second driven pulley 63 was loaded with a set weight (SW) of 834N on the right side.
- SW set weight
- the belt tension of the V-ribbed belt B is measured using a non-contact type belt tension measuring device under an atmospheric temperature of 23 ° C., and then the driving pulley 61 is rotated at a rotational speed of 4900 rpm for 150 hours.
- the belt tension of the V-ribbed belt B was measured again, and the belt tension maintenance rate was calculated from the belt tension before and after belt running.
- Test results The test results are shown in Tables 3 and 4.
- the total fineness of the core wire made of polyester fibers is as thin as 2200 dtex or more and 5500 dtex or less, and the belt bending rigidity is low, so the belt power loss is small and high efficiency. It turns out that it is.
- the contraction force during belt dry heat is 44 N or more, and the belt tension maintenance rate is high, so that the decrease in belt tension is suppressed.
- the belt shrinkage force at the time of dry heat is 44 N or more, and the belt tension maintenance rate is high, so that the decrease in belt tension is suppressed, but the total fineness of the core wire is as thick as 6600 dtex. Also, it can be seen that the belt bending rigidity is high, so that the belt power loss is large and the efficiency is low.
- the total fineness of the core wire is as thin as 4400 dtex, but the belt bending rigidity is high, the belt power loss is high, the contraction force when the belt is dry heat is lower than 44 N, and the belt tension maintenance rate is also low. Therefore, it can be seen that the belt tension is greatly reduced.
- Comparative Example 4 although the total fineness of the core wire is as thin as 3300 dtex, the belt bending rigidity is high and the belt power loss is high as compared with Example 2 in which the total fineness of the core wire is the same. It can be seen that the time contraction force is lower than 44N and the belt tension maintenance rate is low, and therefore the belt tension is greatly reduced.
- Comparative Example 5 although the total fineness of the core wire is as thin as 2200 dtex, the belt bending rigidity is higher than that in Example 1 in which the total fineness of the core wire is the same, and the total fineness of the core wire is the same. Compared with 1, the belt power loss is also high, and the belt shrinkage force during dry heat is lower than 44N, and the belt tension maintenance rate is also low, so that it can be seen that the belt tension is greatly reduced.
- the present invention is useful in the technical field of V-ribbed belts and manufacturing methods thereof.
- V-ribbed belt 10 V-ribbed belt body 14, 14 'Core 15 V-rib
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Abstract
Description
図1及び2は、実施形態に係るVリブドベルトBを示す。実施形態に係るVリブドベルトBは、例えば、自動車のエンジンルーム内に設けられる補機駆動用のベルト伝動装置等に用いられるエンドレスのものである。実施形態に係るVリブドベルトBは、例えば、ベルト長さが700mm以上3000mm以下、ベルト幅が10mm以上36mm以下、及びベルト最大厚さが4.0mm以上5.0mm以下である。
次に、実施形態に係るVリブドベルトBの製造方法について説明する。
ゴム成分に各配合物を配合し、ニーダー、バンバリーミキサー等の混練機で混練し、得られた未架橋ゴム組成物をカレンダー成形等によってシート状に成形して圧縮ゴム層用の未架橋ゴムシート11’を作製する。圧縮ゴム層11に短繊維を含める場合には、この未架橋ゴムシート11’に短繊維を配合すればよい。同様に、接着ゴム層用及び背面ゴム層用の未架橋ゴムシート12’,13’も作製する。
次いで、図3に示すように、円筒型21の外周上に、背面ゴム層用の未架橋ゴムシート13’、及び接着ゴム層用の未架橋ゴムシート12’を順に巻き付けて積層し、その上に接着処理及び延伸熱固定処理を施した心線14’を円筒型21に対して螺旋状に一定の張力を付与して巻き付け、更にその上に接着ゴム層用の未架橋ゴムシート12’及び圧縮ゴム層用の未架橋ゴムシート11’を順に巻き付けて積層することにより積層体B’を成形する。心線14’を巻き付ける際の張力は、ベルト張力の低下を抑制する観点から、好ましくは0.18N/dtex以上、より好ましくは0.20N/dtex以上であり、また、実用性の観点から、好ましくは0.27N/dtex以下、より好ましくは0.25N/dtex以下である。
次いで、図4に示すように、積層体B’にゴムスリーブ22を被せ、それを加硫缶内に配置して密閉すると共に、加硫缶内に高温及び高圧の蒸気を充填して所定の成型時間だけ保持する。このとき、図5に示すように、未架橋ゴムシート11’,12’,13’の架橋が進行して一体化すると共に心線14’と複合化し、最終的に、円筒状のベルトスラブSが成型される。ベルトスラブSの成型温度は例えば100℃以上180℃以下、成型圧力は例えば0.5MPa以上2.0MPa以下、成型時間は例えば10分以上60分以下である。
続いて、加硫缶内から蒸気を排出して密閉を解き、円筒型21上に成型されたベルトスラブSを型抜きし、図6に示すように、ベルトスラブSを一対のスラブ掛け渡し軸23間に掛け渡すと共に、ベルトスラブSの外周面に対し、周方向に延びるVリブ形状溝が外周面の軸方向に連設された研削砥石24を回転させながら当接させ、また、ベルトスラブSも一対のスラブ掛け渡し軸23間で回転させることにより、その外周面を全周に渡って研削する。このとき、図7に示すように、ベルトスラブSの外周面にはVリブ15が形成される。なお、ベルトスラブSは、必要に応じて長さ方向に分割して研削を行ってもよい。
そして、研削によりVリブ15を形成したベルトスラブSを所定幅に幅切りして表裏を裏返すことによりVリブドベルトBが得られる。
図8は、実施形態1に係るVリブドベルトBを用いた自動車の補機駆動ベルト伝動装置30のプーリレイアウトを示す。この補機駆動ベルト伝動装置30は、VリブドベルトBが4つのリブプーリ及び2つの平プーリの6つのプーリに巻き掛けられて動力を伝達するサーペンタインドライブ方式のものである。
以下の実施例1~4及び比較例1~5のVリブドベルトを作製した。それぞれの構成を表1及び2も示す。
1100texのポリエステル繊維束(帝人社製)をS方向に28.6回/10cmの下撚り数(撚り係数900)で撚った下撚り糸を2本集め、それらの2本の下撚り糸をZ方向に20.2回/10cmの上撚り数(撚り係数900)で上撚りした諸撚り糸の心線を準備した。
1100texのポリエステル繊維束をS方向に28.6回/10cmの下撚り数(撚り係数900)で撚った下撚り糸を3本集め、それらの3本の下撚り糸をZ方向に16.5回/10cmの上撚り数(撚り係数900)で上撚りした諸撚り糸の心線を用い、延伸熱固定処理による延伸率を6.8%、及び心線のベルト幅方向のピッチPを0.85mmとしたことを除いて実施例1と同様にVリブドベルトを作製し、それを実施例2とした。
1100texのポリエステル繊維束をS方向に28.6回/10cmの下撚り数(撚り係数900)で撚った下撚り糸を4本集め、それらの4本の下撚り糸をZ方向に14.3回/10cmの上撚り数(撚り係数900)で上撚りした諸撚り糸の心線を用い、延伸熱固定処理による延伸率を6.8%、及び心線のベルト幅方向のピッチPを0.95mmとしたことを除いて実施例1と同様にVリブドベルトを作製し、それを実施例3とした。
1100texのポリエステル繊維束をS方向に28.6回/10cmの下撚り数(撚り係数900)で撚った下撚り糸を5本集め、それらの5本の下撚り糸をZ方向に12.8回/10cmの上撚り数(撚り係数900)で上撚りした諸撚り糸の心線を用い、延伸熱固定処理による延伸率を6.2%、及び心線のベルト幅方向のピッチPを1.05mmとしたことを除いて実施例1と同様にVリブドベルトを作製し、それを実施例4とした。
1100texのポリエステル繊維束を2本集めた合計2200texのポリエステル繊維束をS方向に20.2回/10cmの下撚り数(撚り係数900)で撚った下撚り糸を3本集め、それらの3本の下撚り糸をZ方向に11.7回/10cmの上撚り数(撚り係数900)で上撚りした諸撚り糸の心線を用い、延伸熱固定処理による延伸率を6.3%、及び心線のベルト幅方向のピッチPを1.15mmとしたことを除いて実施例1と同様にVリブドベルトを作製し、それを比較例1とした。
延伸熱固定処理による延伸率を5.5%としたことを除いて比較例1と同様にVリブドベルトを作製し、それを比較例2とした。
延伸熱固定処理による延伸率を5.5%としたことを除いて実施例3と同様にVリブドベルトを作製し、それを比較例3とした。
延伸熱固定処理による延伸率を5.8%としたことを除いて実施例2と同様にVリブドベルトを作製し、それを比較例4とした。
延伸熱固定処理による延伸率を5.8%としたことを除いて実施例1と同様にVリブドベルトを作製し、それを比較例5とした。
<ベルト曲げ剛性>
実施例1~4及び比較例1~5のそれぞれのVリブドベルトについて、Vリブ1個分のベルト幅3.56mmの試験片を切り出し、オルゼン曲げ試験機を用い、振子の回転角度φ=0.175rad(=10°)として試験片をベルト長さ方向に曲げたときの荷重目盛板の読みn(%)から上記式(2)に基づいてベルト曲げ剛性EIを求めた。
実施例1~4及び比較例1~5のそれぞれのVリブドベルトについて、Vリブ1個分のベルト幅3.56mmの試験片Tを切り出し、図9に示すように、その試験片Tを、上側に設けられたロードセル付の上側チャック41と、その下方に設けられた下側チャック42との間に、自然ベルト長さが300mmとなるようにセットし、150℃の雰囲気下、下側チャック42を下方に移動させて長さ方向に6Nの荷重を負荷して固定し、それから30分後の荷重を測定し、その上昇量をベルト乾熱時収縮力とした。
図10A及びBはベルト動力損失測定装置50を示す。
図11はベルト走行試験機60のプーリレイアウトを示す。
試験結果を表3及び4に示す。
10 Vリブドベルト本体
14,14’ 心線
15 Vリブ
Claims (10)
- 各々、ベルト長さ方向に延びる複数のVリブがベルト幅方向に並列するように設けられたゴム製のVリブドベルト本体と、
前記Vリブドベルトに、ベルト幅方向にピッチを有する螺旋を形成するように埋設され総繊度が2200dtex以上5500dtex以下のポリエステル系繊維で構成された心線と、
を備えたVリブドベルトであって、
前記Vリブ1個分のベルト幅当たりにおいて、前記心線の繊度が10000dtex以上19000dtex以下であり、且つ150℃の雰囲気下、ベルト長さ300mmについて、ベルト長さ方向に6Nの荷重を負荷して固定してから30分後の荷重の上昇量であるベルト乾熱時収縮力が44N以上であるVリブドベルト。 - 請求項1に記載されたVリブドベルトにおいて、
前記心線が諸撚り糸であるVリブドベルト。 - 請求項2に記載されたVリブドベルトにおいて、
前記諸撚り糸の前記心線の下撚り糸の本数が2本以上5本以下であるVリブドベルト。 - 請求項2又は3に記載されたVリブドベルトにおいて、
前記諸撚り糸の前記心線の下撚り糸の繊度が1100dtexであるVリブドベルト。 - 請求項1乃至4のいずれかに記載されたVリブドベルトにおいて、
前記心線の外径が0.50mm以上1.00mm以下であるVリブドベルト。 - 請求項1乃至5のいずれかに記載されたVリブドベルトにおいて、
前記心線のベルト幅方向のピッチが0.70mm以上1.10mm以下であるVリブドベルト。 - 請求項1乃至6のいずれかに記載されたVリブドベルトにおいて、
ベルト幅方向に相互に隣接する前記心線間の間隔が0.08mm以上0.20mm以下であるVリブドベルト。 - 請求項1乃至7のいずれかに記載されたVリブドベルトにおいて、
前記Vリブの1個分のベルト幅当たりのベルト曲げ剛性が0.045N・m2以上0.080N・m2以下であるVリブドベルト。 - 請求項1乃至8のいずれかに記載されたVリブドベルトの製造方法であって、
前記心線に対し、接着剤に浸漬して加熱する接着処理の際に張力を付与して延伸する延伸熱固定処理を施し、且つ前記延伸熱固定処理における延伸率を6.0%よりも大きくするVリブドベルトの製造方法。 - 請求項9に記載されたVリブドベルトの製造方法において、
前記接着処理及び前記延伸熱固定処理後の前記心線の乾熱時収縮応力が0.20cN/dtex以上0.50cN/dtex以下であるVリブドベルトの製造方法。
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH116546A (ja) * | 1997-06-17 | 1999-01-12 | Mitsuboshi Belting Ltd | Vリブドベルトを用いた多軸駆動装置 |
JP2013127278A (ja) * | 2011-12-16 | 2013-06-27 | Mitsuboshi Belting Ltd | 伝動ベルト |
JP2014009749A (ja) * | 2012-06-29 | 2014-01-20 | Mitsuboshi Belting Ltd | 伝動ベルト |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4522614A (en) * | 1981-03-12 | 1985-06-11 | Bando Chemical Industries, Ltd. | Automatic tension maintaining transmission belt |
JP2005076703A (ja) * | 2003-08-29 | 2005-03-24 | Mitsuboshi Belting Ltd | Vリブドベルト |
JP2005076705A (ja) * | 2003-08-29 | 2005-03-24 | Mitsuboshi Belting Ltd | Vリブドベルト |
JP2006144988A (ja) * | 2004-11-24 | 2006-06-08 | Bando Chem Ind Ltd | Vリブドベルト及びそれを用いた自動車の補機駆動用ベルト伝動装置 |
ATE550462T1 (de) * | 2009-01-16 | 2012-04-15 | Teijin Fibers Ltd | Polyesterfaser, verfahren zur herstellung der polyesterfaser sowie reifencord, reifen, fasermaterial zur bandverstärkung und band, allesamt mit dieser polyesterfaser |
DE102009026077A1 (de) * | 2009-07-01 | 2011-01-05 | Contitech Antriebssysteme Gmbh | Elastischer Antriebsriemen, insbesondere Keilrippenriemen, mit vermindertem Spannungsverlust |
WO2011065576A1 (ja) * | 2009-11-26 | 2011-06-03 | 帝人株式会社 | 複合材料 |
KR20140082833A (ko) * | 2011-10-26 | 2014-07-02 | 반도 카가쿠 가부시키가이샤 | 고부하 전동용 v 벨트 및 그 제조방법 |
CN103998908B (zh) | 2012-06-01 | 2015-06-17 | 阪东化学株式会社 | 传动带的稳定时张力测量方法 |
US9353466B2 (en) * | 2012-09-12 | 2016-05-31 | Timken Smo Llc | Hybrid power transmission cord |
JP5945562B2 (ja) * | 2013-03-28 | 2016-07-05 | 三ツ星ベルト株式会社 | 伝動用ベルト及びベルト変速装置 |
KR101900166B1 (ko) * | 2014-04-17 | 2018-09-18 | 아사히 가세이 가부시키가이샤 | 고무 보강용 단섬유, 상기 단섬유 함유 고무 조성물 및 동력 전동 벨트 |
KR102307541B1 (ko) * | 2014-05-22 | 2021-09-30 | 반도 카가쿠 가부시키가이샤 | 전동벨트 |
KR101735084B1 (ko) * | 2014-06-20 | 2017-05-12 | 반도 카가쿠 가부시키가이샤 | 전동벨트 및 이를 구비한 벨트 전동장치 |
JP5750561B1 (ja) * | 2014-06-20 | 2015-07-22 | バンドー化学株式会社 | 伝動ベルト及びそれを備えたベルト伝動装置 |
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Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH116546A (ja) * | 1997-06-17 | 1999-01-12 | Mitsuboshi Belting Ltd | Vリブドベルトを用いた多軸駆動装置 |
JP2013127278A (ja) * | 2011-12-16 | 2013-06-27 | Mitsuboshi Belting Ltd | 伝動ベルト |
JP2014009749A (ja) * | 2012-06-29 | 2014-01-20 | Mitsuboshi Belting Ltd | 伝動ベルト |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019188701A1 (ja) * | 2018-03-30 | 2019-10-03 | バンドー化学株式会社 | ローエッジvベルト |
CN111919048A (zh) * | 2018-03-30 | 2020-11-10 | 阪东化学株式会社 | 切边式v带 |
CN111919048B (zh) * | 2018-03-30 | 2022-02-18 | 阪东化学株式会社 | 切边式v带 |
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