WO2022065620A1 - Dispositif de fabrication pour barre d'armature composite renforcée par des fibres pour béton et barre d'armature composite renforcée par des fibres fabriquée à l'aide de celui-ci - Google Patents

Dispositif de fabrication pour barre d'armature composite renforcée par des fibres pour béton et barre d'armature composite renforcée par des fibres fabriquée à l'aide de celui-ci Download PDF

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Publication number
WO2022065620A1
WO2022065620A1 PCT/KR2021/005260 KR2021005260W WO2022065620A1 WO 2022065620 A1 WO2022065620 A1 WO 2022065620A1 KR 2021005260 W KR2021005260 W KR 2021005260W WO 2022065620 A1 WO2022065620 A1 WO 2022065620A1
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WIPO (PCT)
Prior art keywords
fiber
reinforcing bar
reinforced composite
rod
concrete
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Application number
PCT/KR2021/005260
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English (en)
Korean (ko)
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김정대
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(주)나우이엔에스
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Publication of WO2022065620A1 publication Critical patent/WO2022065620A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
    • B29C70/32—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core on a rotating mould, former or core
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B15/00—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00
    • B29B15/08—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00 of reinforcements or fillers
    • B29B15/10—Coating or impregnating independently of the moulding or shaping step
    • B29B15/12—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length
    • B29B15/122—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length with a matrix in liquid form, e.g. as melt, solution or latex
    • B29B15/125—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length with a matrix in liquid form, e.g. as melt, solution or latex by dipping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/56—Winding and joining, e.g. winding spirally
    • B29C53/58—Winding and joining, e.g. winding spirally helically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/80—Component parts, details or accessories; Auxiliary operations
    • B29C53/8008—Component parts, details or accessories; Auxiliary operations specially adapted for winding and joining
    • B29C53/805—Applying axial reinforcements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/80—Component parts, details or accessories; Auxiliary operations
    • B29C53/8008—Component parts, details or accessories; Auxiliary operations specially adapted for winding and joining
    • B29C53/8066—Impregnating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/80—Component parts, details or accessories; Auxiliary operations
    • B29C53/8008—Component parts, details or accessories; Auxiliary operations specially adapted for winding and joining
    • B29C53/8091—Cutting the ends, surface finishing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/80—Component parts, details or accessories; Auxiliary operations
    • B29C53/84—Heating or cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/06—Fibrous reinforcements only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/40—Shaping or impregnating by compression not applied
    • B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
    • B29C70/52—Pultrusion, i.e. forming and compressing by continuously pulling through a die
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/02—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance
    • E04C5/03—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance with indentations, projections, ribs, or the like, for augmenting the adherence to the concrete
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/07—Reinforcing elements of material other than metal, e.g. of glass, of plastics, or not exclusively made of metal

Definitions

  • the present invention relates to an apparatus for manufacturing a fiber-reinforced composite reinforcing bar for concrete and a fiber-reinforced composite reinforcing bar for concrete manufactured through the same.
  • a manufacturing device that increases the amount of resin impregnated in the reinforcing bar through the bottleneck, and divides the hardening part that hardens the reinforcing bar into four regions so that the resin and hardener composite is hardened throughout the reinforcing bar to produce high-rigidity reinforcing bars And to a fiber-reinforced composite reinforcing bar manufactured through it.
  • Concrete is strong in compressive force, but weak in tensile force, so a reinforced concrete structure that is cured by inserting reinforcing bars inside to reinforce the tensile force is generally used.
  • the reinforcing bar of the reinforced concrete structure is corroded by environmental factors such as snow removal materials or seawater environment, and thus the strength is lowered.
  • reinforcing bars made of fiber-reinforced composites have been developed and used to replace reinforcing bars, which are not only excellent in corrosion resistance, heat resistance and corrosion resistance, but also have high strength, so their application range is expanding in various industrial fields. , is attracting attention as a semi-permanent new material.
  • the fiber-reinforced composite reinforcing bar must be impregnated with resin and hardener evenly throughout the reinforcing bar so that the tensile force is not concentrated in a part of the reinforcing bar, and heat must be evenly applied to the entire reinforcing bar to match the composite composition during the hardening process.
  • a fiber-reinforced composite reinforcing bar can be produced.
  • Another object of the present invention is to provide an apparatus for manufacturing a fiber-reinforced composite reinforcing bar for concrete that forms a hardening part into four zones so that even heat can be applied to the entire reinforcing bar in response to the composite configuration.
  • Another object of the present invention is to provide an apparatus for manufacturing a fiber-reinforced composite reinforcing bar for concrete in which load cells are formed at both ends of the conveying unit so that the conveying unit can evenly press and convey the entire reinforcing bar.
  • the present invention provides an apparatus for producing a fiber-reinforced composite reinforcing bar for concrete capable of producing a smooth and high-rigidity reinforcing bar by evenly and sufficiently impregnating the resin and applying even heat to match the properties of the composite. .
  • the present invention provides a plurality of creel parts wound with composite reinforcing roving fibers; a resin impregnation part formed to be impregnated by releasing each of the roving fibers into a bundle from the plurality of creel parts; The roving fiber bundle impregnated with the resin-impregnated part is put together to process the reinforcing rod by pultrusion, but the inner passage becomes narrower toward the exit like a fallopian tube.
  • a rod processing unit including a rear end mold having a straight inner passage to process the shape of the roving fiber bundle passing through; a winding part for forming ribs by spirally winding fibers for ribs on the outer peripheral surface of the reinforcing rod discharged from the rod processing part; a hardening unit for accelerating a hardening reaction by applying heat to the reinforcing rod having the ribs; a cooling unit for cooling by supplying a fluid to the reinforcing rod heated in the hardening unit; a transfer unit for pulling the reinforcing rod that has passed through the cooling unit to the rear, and transferring the reinforcing rod to a subsequent process in the entire process; and a cutting unit for cutting the reinforcing rod discharged through the transfer unit to a set length.
  • the rear end mold inner passage may be formed narrower than the outlet of the front end mold inner passage.
  • the front end mold and the rear end mold may be arranged to be spaced apart from 250 to 300 mm.
  • the winding portion, the ribs are formed at intervals of 10 ⁇ 14mm on the outer peripheral surface of the reinforcing rod, form an angle of 45 ⁇ 50 degrees with the central axis of the reinforcing rod, the height protruding from the rod is 0.4 ⁇ 1.2
  • the fiber for the rib can be wound to be formed in mm.
  • the resin-impregnated part includes a low-temperature and high-temperature curing agent
  • the curing part includes a first zone where the reaction of the low-temperature curing agent starts, a second zone where the reaction of the high-temperature curing agent starts, and a first zone where the neutralization reaction of the curing agent starts. It can be divided into a third zone and a fourth zone where the curing reaction is promoted.
  • the temperature of the hardening part may be gradually increased as it progresses from the first zone to the fourth zone.
  • the transfer unit presses the reinforcing rod up and down and pulls it backward
  • a load cell may be formed at both ends of the transfer unit to measure and adjust an interval for pressing the reinforcing rod up and down.
  • the present invention also provides a fiber-reinforced composite reinforcing bar for concrete manufactured by the above-described manufacturing apparatus.
  • the ribs may be formed at intervals of 10 to 14 mm, form an angle of 45 to 50 degrees with the central axis of the rod, and a height protruding from the rod may be formed to be 0.4 to 1.2 mm.
  • the front end mold for processing the reinforcing bar is formed like a fallopian tube, and the resin can be sufficiently and evenly impregnated into the reinforcing bar through the bottleneck phenomenon.
  • the hardening part is formed into four zones to correspond to the composite structure, and heat can be evenly applied to the entire reinforcing bar so that the entire composite reinforcing bar is sufficiently hardened.
  • load cells are formed at both ends of the transfer unit for transferring the reinforcing bar, and the entire reinforcing bar can be transferred by equally pressing up and down.
  • FIG. 1 is a schematic diagram schematically showing the configuration of an apparatus for manufacturing a fiber-reinforced composite reinforcing bar for concrete according to the present invention.
  • Figure 2 is a cross-sectional view showing a rod processing portion of the fiber-reinforced composite reinforcing bar manufacturing apparatus for concrete according to the present invention.
  • Figure 3 is a side view showing the transfer unit of the fiber-reinforced composite reinforcing bar manufacturing apparatus for concrete according to the present invention.
  • FIG. 4 is a side view of a fiber-reinforced composite reinforcing bar for concrete manufactured by the apparatus for manufacturing a fiber-reinforced composite reinforcing bar for concrete according to the present invention.
  • 'fiber-reinforced composite reinforcing bar manufacturing device for concrete' used throughout the specification may be briefly abbreviated as 'fiber-reinforced composite reinforcing bar manufacturing device', 'reinforcing bar manufacturing device' or 'manufacturing device', and 'concrete Fiber-reinforced composite reinforcing bars' may also be briefly referred to as 'fiber-reinforced reinforcing bars' or 'reinforcing bars'.
  • the fiber-reinforced composite reinforcing bar, roving fiber or fiber for rib is generally composed of glass fiber, but is not limited thereto, and any one selected from aramid fiber, carbon fiber, basalt fiber, PVA fiber, and high-strength polyester fiber or their It may consist of a combination.
  • FIG. 1 is a schematic diagram schematically showing the configuration of an apparatus for manufacturing fiber-reinforced composite reinforcing bars for concrete according to the present invention
  • FIG. 2 is a rod processing part 30 of the apparatus for manufacturing fiber-reinforced composite reinforcing bars for concrete according to the present invention. It is a cross-sectional view
  • FIG. 3 is a side view showing the transfer unit 70 of the apparatus for manufacturing fiber-reinforced composite reinforcing bars for concrete according to the present invention.
  • the present invention relates to a manufacturing apparatus capable of manufacturing a fiber-reinforced reinforcing bar having excellent rigidity by being sufficiently impregnated with resin and hardened according to the properties of the composite, and as shown in FIG. 20), including a rod processing unit 30, a winding unit 40, a hardening unit 50, a cooling unit 60, a transfer unit 70 and a cutting unit 80.
  • the creel part 10 is a roving fiber (2a) wound for manufacturing the rod 2 of the composite reinforcing bar, which constitutes the base material for the rod 2 of the reinforcing bar, and the creel part ( 10) is periodically consumed.
  • the creel part 10 is composed of a plurality, and the specific number corresponds to the preset diameter of the rod 2 of the reinforcing bar, and is generally released into 90 to 232 strands at once and moves to the resin-impregnated part 20 to be described later.
  • the resin-impregnated part 20 is configured to impregnate the resin by releasing each of the roving fibers 2a from a plurality of krill into bundles, and may be in the form of a water tank filled with resin in the accommodation space so that the bundles can be impregnated at once.
  • the resin filled in the resin-impregnated part 20 is an epoxy-based resin for achieving the purpose of increasing the tensile strength and elastic modulus of the reinforcing bar, and may be composed of a thermosetting resin in which a low-temperature curing agent, a high-temperature curing agent, and a colorant are mixed. More specifically, the resin may be selected from among the epoxy-based unsaturated polyesters, and a low-temperature curing agent and a high-temperature curing agent may be selected corresponding to the type of resin.
  • the rod processing unit 30 is configured to input the roving fiber bundle 2b impregnated in the resin-impregnated unit 20 and process the shape of the reinforcing rod 2 by pultrusion molding. That is, when 90 to 232 impregnated roving fiber bundles 2b are put into the rod processing unit 30, the rod-shaped reinforcing rod 2 is processed by pultrusion molding.
  • the rod processing unit 30 includes a front end mold 31 and a rear end mold 32 as shown in FIGS. 1 and 2 .
  • the inlet is relatively wide so that the resin-impregnated roving fiber bundle 2b can be collected without damage.
  • the resin impregnated in the roving fiber bundle (2b) as it becomes narrower toward the exit fills the inner passage (31a) of the front end mold (31) as a bottleneck phenomenon, and accordingly, the resin in the roving fiber bundle (2b) Once again impregnated, the resin can be sufficiently and evenly filled to the inner center of the roving fiber bundle 2b.
  • the inner passage 31a of the front end mold 31 is sufficient to narrow toward the exit, and may be formed in an oblique line, or may be formed such that the slope of the inner passage 31a becomes greater as it goes.
  • the inner passage (31a) is preferably configured so that the inclination becomes gradually gentler.
  • the shape of the roving fiber bundle 2b passing through the front end mold 31 is reprocessed through the rear end mold 32 to be processed into the shape of the reinforcing bar 2 .
  • the inner passage 32a is formed in a straight line to process the shape of the reinforcing rod 2 by re-pressing the roving fiber bundle 2b primarily collected at the exit of the front end mold 31. .
  • the roving fiber bundle 2b is processed into the shape of the reinforcing rod 2 .
  • the inner passage 32a of the rear end mold 32 may be formed narrower than the outlet of the inner passage 31a of the front end mold 31 . Since the inner passage 32a of the rear end mold 32 is narrowed, the rear end mold 32 strongly presses the roving fiber bundle 2b to process the reinforcing rod 2 with an airtight interior.
  • the surplus resin of the roving fiber bundle (2b) is scraped off with a step difference in the process of transporting the rear end mold (32) to smooth the surface of the reinforcing rod (2), and the resin impregnated in the roving fiber bundle (2b) can be squeezed out, and at the same time there is no surplus, the resin can be sufficiently impregnated even to the center of the roving fiber bundle (2b).
  • the diameter of the inner passage 32a of the rear end mold 32 may be smaller than the diameter of the outlet of the inner passage 31a of the front end mold 31 by 2 mm.
  • the front end mold 31 and the rear end mold 32 may be disposed to be spaced apart, in this case, the spacing is preferably 250 ⁇ 300mm.
  • the spacing is less than 250mm, the surplus resin impregnated in the roving fiber bundle (2b) is not well discharged, so that foreign substances are caught in the front end mold (31), or the surface of the roving fiber bundle (2b) is curved due to excessive resin.
  • the winding unit 40 is configured to spirally wind the rib fiber 3a on the outer peripheral surface of the reinforcing rod 2 discharged from the rod processing unit 30 to form the rib 3 (see FIG. 4 ) of the reinforcing bar. .
  • the reinforcing bar has a larger contact area with the concrete, and as the concrete is filled and cured between the ribs 3, the reinforcing bar and the concrete can behave integrally.
  • the winding part 40 is made to rotate continuously on the outer peripheral surface of the reinforcing rod 2 on which the roller on which the rib fiber 3a is wound is transferred, and thus the rib fiber ( 3a) is wound so that the rib 3 is formed.
  • the rib fiber 3a which is the base material for forming the rib 3, may be a non-twisted yarn as shown, but may be a twisted yarn unlike the shown in order to impart strength and increase the surface area.
  • the rib (3) on the outer circumferential surface of the reinforcing rod (2) may be wound to form an interval of 10 ⁇ 14mm.
  • the rib (3) formed by winding can be wound to have an angle of 45 to 50 degrees with the central axis of the reinforcing rod (2), and the rib fiber ( 3a) can be wound. The effect on the specific numerical range will be described later while explaining the fiber-reinforced composite reinforcing bar for concrete with reference to FIG. 4 .
  • the hardening part 50 accelerates the hardening reaction by applying heat to the reinforcing rod 2 on which the ribs 3 are formed.
  • the rib (3) is wound on the reinforcing bar (2), the resin impregnated in the reinforcing bar (2) spreads to the rib (3) and impregnated, and heat is applied to the reinforcing bar (2) and the rib (3) at the same time to apply heat to the entire reinforcing bar. is integrally cured.
  • the reinforcing bar is composed of not only glass fiber but also a composite such as a resin, a curing agent and a colorant, and in order to properly harden it, the temperature of the hardening part 50 is important.
  • the hardening part 50 of the present invention may divide the hardening part 50 into four zones.
  • the first zone is the zone where the curing reaction of the low-temperature curing agent starts
  • the second zone is the zone where the curing reaction of the high-temperature curing agent starts.
  • area to be The third zone is a zone where the neutralization reaction of the low-temperature and high-temperature curing agents starts
  • the fourth zone is a zone that promotes the curing reaction.
  • each zone can be composed of 1.85 m, and the temperature can be formed so that the temperature gradually rises from the first zone, which is the lowest temperature, to the fourth zone, which is the highest temperature.
  • an extra space may be configured to maximize the tension of the reinforcing bar.
  • the cooling unit 60 allows the reinforcing rod 2 to be hardened through the hardening unit 50 and then directly cool it through a fluid supply to ensure rigidity with respect to the reinforcing rod 2 .
  • the transfer unit 70 is configured to pull the reinforcing rod 2 that has passed through the cooling unit 60 to the rear, and transfer the reinforcing rod 2 to the subsequent process in the entire process. In this way, the transfer unit 70 can advance to a subsequent process through the pulling force, and in particular, it becomes a force for pultrusion molding the reinforcing rod 2 in the rod processing unit 30 . On the other hand, the transfer unit 70 does not transfer only one reinforcing bar or reinforcing bar 2, but pulls a plurality of reinforcing bars, such as two or four, to the rear. The upward and downward pressing force should be constant.
  • a load cell 71 may be formed at both ends of the transfer unit 70 to measure and adjust the interval for pressing the reinforcing bar 2 up and down. It is possible to measure and adjust the interval for pressing the reinforcing rod 2 up and down with the load cells 71 of dogs. In this way, it is not necessary to measure and adjust the upper and lower gaps one by one, and it is possible to secure the reliability of the gap by eliminating errors that occur during manual measurement.
  • the transfer unit 70 is divided into an upper portion 70a and a lower portion 70b as shown in FIG. 3 , and an elastic member 72 may be provided to press the reinforcing bar therebetween.
  • the lower transfer part 70b supports the reinforcing bar 2, and the seated reinforcing bar 2 is drawn out according to the flow of the process.
  • the upper conveying part 70a is continuously rotated in the opposite direction to the lower conveying part 70b, and presses the upper part of the reinforcing bar 2 together with the lower conveying part 70b.
  • the elastic member 72 is coupled to each of the upper and lower transfer units 70a and 70b, is made of a material such as rubber, and is in direct contact with the moving reinforcing reinforcing rod 2, and by the upper and lower transfer units 70a and 70b, the reinforcing rod ( 2) to prevent damage.
  • the cutting unit 80 is configured to cut the reinforcing rod 2 discharged through the transfer unit 70 to a set length to complete the reinforcing bar in the form of a final product.
  • the reinforcing rod (2) By cutting the reinforcing rod (2) to a length set by a user or a standard distributed, storage and transport are made easy.
  • a force pulling the reinforcing rod 2 through the transfer unit 70 must be uniformly applied to the plurality of reinforcing bars.
  • the fiber-reinforced composite reinforcing bar 1 for concrete can be manufactured through the above-described manufacturing apparatus, and the manufactured fiber-reinforced composite reinforcing bar 1 will be described with reference to FIG. 4 .
  • FIG. 4 is a side view of the fiber-reinforced composite reinforcing bar 1 for concrete manufactured with the apparatus for manufacturing a fiber-reinforced composite reinforcing bar for concrete according to the present invention.
  • the fiber-reinforced composite reinforcing bar (1) disclosed in the present invention is sufficiently impregnated with resin, hardened to match the properties of the composite, has a smooth surface, and has excellent rigidity such as tensile strength.
  • the ribs (3) may be formed at intervals of 10 ⁇ 14mm.
  • the spacing between the ribs 3 is 9 mm or less, the resin content between the gaps decreases, and the surface of the reinforcing bar 1 becomes rough and crumbly, and the tensile strength of the reinforcing bar 1 may be significantly reduced.
  • the spacing between the ribs 3 exceeds 15 mm, the resin content between the gaps is high, so that the resin does not fully harden, and the tensile strength decreases. and separation behavior may occur.
  • the rib (3) may form an angle of 45 to 50 degrees with the central axis of the reinforcing rod (2).
  • the angle is less than 45 degrees, there is a problem in the process of losing consistency in resin impregnation property, and a problem in which the rib 3 slips during concrete pouring occurs.
  • it exceeds 50 degrees the rib 3 slips during the manufacturing process, resulting in defects, and the reinforcing bar 1 may be bent due to uneven resin.
  • the rib 3 may be formed to have a height of 0.4 to 1.2 mm protruding from the rod 2 . If the protrusion height is 0.4mm or less, the resin inside the rib 3 is not uniform for every node, and may flow down to the bottom of the product to decrease the hardness of the product. On the other hand, if it is 1.2 mm or more, the entire rib 3 cannot be impregnated with resin, and only the fiber itself is produced, so that the rigidity or strength is significantly reduced.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Thermal Sciences (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

La présente invention concerne un dispositif de fabrication pour une barre d'armature composite renforcée par des fibres pour béton et une barre d'armature composite renforcée par des fibres fabriquée à l'aide de celui-ci et, plus particulièrement, un dispositif de fabrication et une barre d'armature composite renforcée par des fibres fabriquée à l'aide de celui-ci, le dispositif augmentant la quantité de résine imprégnée dans une tige de barre d'armature à travers le phénomène de goulot d'étranglement en formant un moule frontal pour le traitement de la forme d'une tige, dans laquelle un passage interne devient plus étroit vers une sortie telle qu'une forme de corne et fabriquant une barre d'armature présentant une rigidité élevée en divisant une pièce de durcissement permettant de durcir la tige de barre d'armature en quatre zones et en durcissant fermement un composite de résine et de durcisseur à travers la tige de barre d'armature.
PCT/KR2021/005260 2020-09-23 2021-04-26 Dispositif de fabrication pour barre d'armature composite renforcée par des fibres pour béton et barre d'armature composite renforcée par des fibres fabriquée à l'aide de celui-ci WO2022065620A1 (fr)

Applications Claiming Priority (2)

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KR10-2020-0122891 2020-09-23
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KR20230152895A (ko) 2022-04-27 2023-11-06 주식회사 맥킨리소재기술 섬유강화 복합체 보강근 제조장치 및 이를 통해 제조된 섬유강화 복합체 보강근
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CN115747680B (zh) * 2022-09-15 2024-03-22 中南大学 一种铝基碳化硅连续纤维材料缠绕成型装置

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