WO2007125792A1 - 繊維強化樹脂ストランドの製造装置 - Google Patents
繊維強化樹脂ストランドの製造装置 Download PDFInfo
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- WO2007125792A1 WO2007125792A1 PCT/JP2007/058426 JP2007058426W WO2007125792A1 WO 2007125792 A1 WO2007125792 A1 WO 2007125792A1 JP 2007058426 W JP2007058426 W JP 2007058426W WO 2007125792 A1 WO2007125792 A1 WO 2007125792A1
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- fiber
- reinforced resin
- strand
- roller
- resin strand
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Classifications
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- 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
- B29B9/00—Making granules
- B29B9/12—Making granules characterised by structure or composition
- B29B9/14—Making granules characterised by structure or composition fibre-reinforced
-
- 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
-
- 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
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/04—Particle-shaped
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/05—Filamentary, e.g. strands
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
- B29C48/156—Coating two or more articles simultaneously
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/345—Extrusion nozzles comprising two or more adjacently arranged ports, for simultaneously extruding multiple strands, e.g. for pelletising
-
- 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]
- B29C70/504—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] using rollers or pressure bands
-
- 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
- B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
- B29C70/16—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length
- B29C70/20—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in a single direction, e.g. roofing or other parallel fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
- B29K2105/12—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of short lengths, e.g. chopped filaments, staple fibres or bristles
Definitions
- the present invention relates to an apparatus for manufacturing a fiber-reinforced resin strand, and more particularly to an apparatus for manufacturing a fiber-reinforced resin strand with excellent productivity of the fiber-reinforced resin strand.
- Pellets obtained by cutting long fiber-reinforced resin strands into, for example, about 3 to 15 mm are automobile interior members (console boxes, instrument panels, etc.), automobile exterior members (vano fenders, etc.), electronic equipment members It is used to manufacture injection molded products such as housings (notebook PCs, mobile phones, etc.).
- FIG. 1 An apparatus for manufacturing a fiber-reinforced resin strand according to Conventional Example 1 will be described with reference to FIG.
- the apparatus for producing a fiber-reinforced resin strand according to Conventional Example 1 is designed to efficiently produce a fiber-reinforced resin strand with high adhesion between the reinforcing fiber and the resin.
- a spreader 58 that disentangles the reinforcing fiber bundle is disposed in a crosshead 55 to which the molten resin material 52 is continuously supplied from the extruder 56.
- the exit force is also provided in this order: a shaping die 59, a cooler 60, a twisting roller (also called a cross roller capstan) 61a, 61b, and a drawing roller 62. It is arranged.
- the reinforcing fibers 51, 51, ... are immersed in the molten resin material 52 and impregnated with the resin in the crosshead 55. After that, the cross-sectional shape is determined by the shaping die 59 and cooled and hardened by the cooler 60.
- the twisting rollers 61a and 61b are rubber rollers, and are configured to be driven to rotate in directions opposite to each other. Further, the twisting rollers 61a and 61b are disposed so as to be inclined in the opposite direction on the horizontal plane.
- the fiber reinforced resin strand 53 is pulled out in the direction of the arrow when the rollers 61a and 61b are rotationally driven in a state where the rollers 61a and 61b are sandwiched between the intersecting portions (contact portions) of the twist rollers 61a and 6 lb. Rotate around the axis. [0005] By such rotation, the fiber-reinforced resin strand 53 is twisted between the cooler 60 and the most downstream spreader 58a. The twisted fiber reinforced grease strand 53 is drawn away from the cross head 55 by the drawing roller 62 and is cut by the pelletizer 63 there. (For example, see Patent Document 1.) o
- Patent Document 1 JP-A-5-169445
- An object of the present invention is to provide an apparatus for producing a fiber-reinforced resin strand capable of producing a fiber-reinforced resin strand at a high production rate.
- the present invention has been made in view of the above circumstances, and is an apparatus for producing a fiber-reinforced resin strand, provided in a crosshead to which an extruder-powered molten resin material is continuously supplied.
- a spreader for defibrating the reinforcing fiber bundle and a reinforcing fiber bundle provided downstream of the outlet nozzle of the crosshead and defibrated by the spreader were impregnated with the molten resin material.
- a pair of rollers including at least a pair of rollers for drawing a fiber-reinforced resin strand made of a fiber-impregnated fiber bundle from the outlet nozzle and twisting the fiber-reinforced resin strand.
- at least one pair of rollers is characterized by being made of metal having irregularities formed on the surface.
- At least a pair of rollers for drawing out and twisting the fiber-reinforced resin strand that also has the outlet nozzle force of the crosshead and the fiber-impregnated fiber bundle force All of these are made of metal having irregularities formed on the surface. Accordingly, the friction coefficient between the two rollers and the fiber-reinforced resin strand is increased due to the unevenness of the twist roller, so that it is possible to suppress the occurrence of slipping when the fiber-reinforced resin strand is pulled out.
- the apparatus for producing a fiber-reinforced resin strand according to claim 9 of the present invention is a cloth for impregnating molten resin with a long reinforcing fiber bundle continuously introduced from the upstream side. And a twisting roller provided on the downstream side of the crosshead for twisting the fiber impregnated reinforcing fiber bundle, and a reinforcing roller provided between the twisting roller and the crosshead and pulled out from the crosshead.
- a cooling device for cooling a fiber-reinforced resin strand having a fiber bundle force, a heating roller device provided on the upstream side of the cross head and for preheating the reinforcing fiber bundle guided to the cross head, and A back tension applying device provided on the upstream side of the heating roller device and applying a back tension to the reinforcing fiber bundle with the heating roller device.
- the reinforcing fiber bundle can be alternately wound a plurality of times, and has at least two heating rollers each generating heat, and the back tension applying device contacts the reinforcing fiber bundle with each heating roller. The back tension is applied so that the
- a fiber reinforced resin strand manufacturing apparatus includes a heating roller device provided on the upstream side of the cross head, and the heating roller device provided on the upstream side of the heating roller device. And a knock tension applying device for applying back tension to the reinforcing fiber bundle wound around each of the heating rollers. Thereby, the reinforcing fiber bundle is alternately wound a plurality of times on at least two heating rollers arranged above and below the heating roller device in a state in which the back tension is applied by the knock tension applying device.
- the vehicle travels while being in close contact with the heated heating roller, and is continuously guided to the crosshead in a heated state, not at room temperature.
- the apparatus for producing a fiber-reinforced resin strand according to claim 12 of the present invention is an apparatus for manufacturing a fiber-reinforced resin strand, which is a long strong fiber continuously introduced from the upstream side.
- a cooling machine, and the cooling device stores the cooling water so that the fiber-reinforced resin strands taken from the crosshead can be passed through the cooling water.
- a cooling water tank and a plurality of water injection nozzles that are provided in the cooling water tank at intervals in the traveling direction of the fiber-reinforced resin strands and inject water toward the fiber-reinforced resin strands in the cooling water. It is characterized by being constructed as
- the apparatus for producing a fiber-reinforced resin strand according to claim 12 includes a cooling device provided between the cross head and the twisting roller.
- a cooling device provided between the cross head and the twisting roller.
- the cooling water tank that stores the cooling water for passing the high-temperature fiber-reinforced resin strands taken from the crosshead
- water injection nozzles that inject water toward the fiber-reinforced resin strands in the cooling water are fibers.
- a plurality of reinforcing resin strands are provided at intervals in the running direction. For this reason, the cooling water in the cooling water tank is agitated by the water flow generated by the water jet nozzles jetting water, thereby continuously adding new cooling to the fiber-reinforced resin strands passing through the cooling water.
- a water stream can be guided and contacted.
- a fiber-reinforced resin strand in which a reinforcing fiber bundle is sufficiently impregnated with a resin material at a higher take-up speed than, for example, a take-up speed exceeding 40 mZ, is used in a twisting machine. Manufacture without strand slippage Can do.
- the method for producing a fiber-reinforced resin strand according to claim 17 is a fiber obtained by defibrating the reinforcing fiber bundle in the cross head and impregnating the molten resin material with the fiber-impregnated fiber bundle.
- a method for producing a fiber-reinforced resin strand comprising a step of forming a fiber-reinforced resin strand, drawing the fiber-reinforced resin strand from the outlet nozzle cover of the crosshead and twisting it together, and each surface has irregularities. Then, using a twisting roller including at least a pair of rollers that also have metal force, the exit nozzle force of the cross head also draws out the fiber-reinforced resin strands and twists them together.
- the method for producing a fiber-reinforced resin strand according to claim 18 is a fiber reinforcement comprising a fiber-impregnated fiber bundle by impregnating a molten fiber with a crosshead into a pre-heated reinforcing fiber bundle.
- a method for producing a fiber-reinforced resin strand comprising a step of forming a resin strand, twisting the fiber-reinforced resin strand from the cloth head after cooling, and applying a back tension The reinforcing fiber bundle is preheated by bringing the reinforcing fiber bundle into contact with a preheated heating roller.
- the fiber bundle for reinforcing is impregnated with a molten fiber in a crosshead to form a fiber-reinforced resin strand composed of a fiber-impregnated fiber bundle.
- a method for producing a fiber-reinforced resin strand comprising a step of taking a fiber-reinforced resin strand from a crosshead and cooling it and then twisting it, and cooling water is stored in the fiber-reinforced resin strand that has been cross-linked While passing a cooling water tank, the said fiber reinforced resin strand is cooled by injecting water toward the said fiber reinforced resin strand in this cooling water tank.
- FIG. 1 is a schematic configuration explanatory view of an apparatus for producing a fiber-reinforced resin strand according to a first embodiment of the present invention.
- FIG. 2 is a schematic perspective view of a twist roller of the apparatus for producing a fiber-reinforced resin strand according to the first embodiment of the present invention.
- FIG. 3 shows a twist holding port of the apparatus for producing a fiber-reinforced resin strand according to the first embodiment of the present invention. It is a typical perspective view of one la.
- FIG. 4 is a configuration explanatory view showing the overall configuration of the apparatus for producing a fiber-reinforced resin strand according to the second embodiment of the present invention.
- FIG. 5 is a schematic configuration diagram showing the reinforcing fiber back tension applying device in FIG. 4.
- FIG. 6 is a front view showing the configuration of the heating roller device in FIG. 4.
- FIG. 7 is a side view for explaining the configuration of the heating roller device shown in FIG. 6 from the direction of arrow VII.
- FIG. 8 is a rear view of the heating roller device shown in FIG.
- FIG. 9 A cross section taken along line IX-IX in Fig. 6.
- FIG. 10 is a plan view schematically showing the configuration of the cooling device in FIG. 4.
- FIG. 11 is a sectional view taken along line XI—XI in FIG.
- FIG. 12 is an explanatory diagram of the twisting roller in FIG.
- FIG. 13 is a view for explaining another example of the back tension applying device according to the second embodiment of the present invention.
- FIG. 14 is a view for explaining another example of the back tension applying device according to the second embodiment of the present invention.
- FIG. 15 is an explanatory diagram showing the configuration of the apparatus for producing a fiber-reinforced resin strand according to the third embodiment of the present invention.
- FIG. 16 is a schematic view of pellets obtained by cutting twisted fiber reinforced resin strands.
- FIG. 17 is an explanatory view of an apparatus for producing fiber-reinforced resin strands according to a conventional example.
- FIG. 1 is a schematic configuration explanatory view of an apparatus for producing a fiber-reinforced resin strand according to the first embodiment of the present invention
- Fig. 2 is a device for manufacturing a fiber-reinforced resin strand according to the first embodiment of the present invention
- FIG. 3 is a schematic perspective view of a twist holding roller of the apparatus for producing a fiber-reinforced resin strand according to the first embodiment of the present invention.
- FIG. It An apparatus for producing a fiber-reinforced fiber strand according to the first embodiment of the present invention is shown in FIG. It is configured as follows. That is, the apparatus for producing fiber-reinforced cocoon strands has a plurality of bobbins.
- a fiber-reinforced resin strand 9 having a fiber-impregnated fiber bundle force is drawn from the outlet nozzle 5a to the downstream position in the right direction of the outlet nozzle 5a of the crosshead 5, Twisting rollers 11a and l ib, which will be described later, for providing twisting are disposed. Further, below-described twist holding rollers 12a and 12b for holding the twisted state of the fiber-reinforced resin strand 9 are disposed downstream of the twist rollers 11a and ib. Further, a pelletizer 13 which is a cutting machine for cutting the fiber-reinforced resin strands 9 and pelletizing them is disposed downstream of the twist holding rollers 12a and 12b. Note that what is disposed between the outlet nozzle 5a and the twisting rollers 11a and ib and in the vicinity of the outlet nozzle 5a is a cooler 10 for cooling the fiber-reinforced resin strand 9 passing through the hollow portion. It is.
- the twisting rollers 11a and l ib are made of metal, and the rotation axis of the upper twisting roller 11a and the rotation axis of the lower twisting roller lib in FIG. On each horizontal plane passing in a direction perpendicular to the direction, the direction force orthogonal to the directions opposite to each other is set to a direction shifted by a predetermined angle. Further, irregularities 11c are formed by knurling on the surface of the twisting rollers 11a and ib.
- the pitch of the unevenness 11c is set to 0.3 to 3 mm, preferably 0.63 to L: 57 mm, and the height of the unevenness 11c (from the bottom of the concave portion to the apex of the convex portion). Is set at 0.15 ⁇ : L, 5mm.
- the twist rollers 11a and l ib are both configured to be rotationally driven in the direction in which the fiber-reinforced resin strands 9 are drawn out. Further, the interval between the twisting rollers 11a and ib can be adjusted so that the minimum interval set corresponding to the diameter of the fiber-reinforced resin strand 9 is obtained. With this adjustment, the fiber reinforced The effect that the damage of the land 9 can be prevented can be obtained.
- these twist rollers 11a and ib are both configured to be driven to rotate, but one of them is rotated. It may be configured to be driven and the other to freely rotate. With this configuration, it is possible to obtain an economic effect that the configuration is simple and advantageous in terms of equipment cost. Of course, the pulling power of the fiber-reinforced resin strand 9 is weak, but it is practical because it can be obtained.
- these twist rollers 11a and ib are both configured to be operable in a direction in which they are in contact with and separated from the other roller. However, it may be configured such that one of them can contact and separate from the other and the other is fixed. According to such a configuration, since the configuration of the contact / separation operation control mechanism of the twisting rollers 11a and ib is simplified, it is possible to obtain an economic effect that the facility cost is advantageous.
- the twist holding rollers 12a and 12b are made of metal, similar to the twist rollers 11a and ib. Further, the rotation axis of the upper twist holding roller 12a and the rotation axis of the lower twist holding roller 12b in FIG. 3 are in different directions on horizontal planes parallel to each other. Specifically, each rotation axis is set in a direction shifted by a predetermined angle in a direction opposite to a specific reference line orthogonal to the moving direction of the fiber-reinforced resin strand. Furthermore, irregularities 12c are formed on the surfaces of the twist holding rollers 12a and 12b by a knurled cage.
- the twist holding rollers 12a and 12b are both rotationally driven in the direction of drawing out the fiber-reinforced resin strands as indicated by arrows in FIG. Further, the intervals of the twist holding rollers 12a and 12b can be adjusted so as to be the minimum interval set corresponding to the diameter of the fiber-reinforced grease strand. Of course, the fiber-reinforced resin strand 9 can be prevented from being damaged by adjusting the distance.
- both the twist holding rollers 12a and 12b are configured to be driven to rotate, but one of them is configured to rotate. It may be configured to be driven to rotate and the other to freely rotate.
- Such a configuration since the configuration of the drive device for the twist holding rollers 12a and 12b is simplified, it is possible to obtain an economic effect that it is advantageous in terms of equipment cost.
- both of the twist holding rollers 12a and 12b are configured to contact and separate from the other roller. However, either one of them may contact and separate from the other, and the other may be fixed. According to such a configuration, since the configuration of the contact / separation operation control mechanism of the twist holding rollers 12a and 12b becomes simple, an economic effect that it is advantageous in terms of equipment cost can be obtained.
- roller operating means for operating the twisting rollers 11a and lib and the twisting holding rollers 12a and 12b to face each other for example, a panel, an air cylinder, a hydraulic cylinder, or the like can be used.
- the roller operating means is a panel, adjust the amount of stagnation of the panel, if the roller operating means is an air cylinder, adjust the air pressure, and if the roller operating means is a hydraulic cylinder, adjust the oil pressure.
- the roller force can also adjust the pressing force against the fiber-reinforced resin strand 9.
- the spacing between the twisting rollers 11a, l ib and the spacing between the twisting holding rollers 12a, 12b can be adjusted by, for example, mechanical means described later.
- the minimum interval between the rollers is set according to the diameter of the fiber-reinforced resin strand 9. This minimum interval is usually set to be in the range of 70 to 90% of the diameter of the reinforced resin strand 9, but the degree of the minimum interval is determined by the strength of the mechanical strength of the fiber reinforced resin strand 9.
- the minimum spacing of 70% of the above 70 to 90% range is set, while the low strength strength material strength fiber In the case of reinforced rosin strand 9, it is set to a minimum interval of 90%.
- the minimum roller distance adjusting means 20 for adjusting the distance between the twist rollers 11a and lib or the distance between the twist holding rollers 12a and 12b is configured as shown in FIG.
- the roller minimum gap adjusting means 20 moves up and down by the hydraulic cylinder 21 for applying the pressing force by the rollers l la and l ib to the fiber reinforced resin strand 9 and the expansion and contraction of the rod of the hydraulic cylinder 21.
- a pair of roller supports for rotatably supporting both end portions of the rollers.
- a lifting frame 22 provided with a holding racket 22a, and a stopper bolt 23 formed by screwing a female nut and a lock nut 24, not shown, screwed at both ends of the lifting frame 22 are provided. ing.
- the lifting frame 22 is moved by adjusting the stroke of the hydraulic cylinder 21.
- the reinforcing fiber bundle 3 composed of a plurality of reinforcing fibers 1 introduced into the cross head 5 is also defibrated by the spreader 8 and the extruder 6
- the molten resin material 2 continuously supplied is impregnated.
- the resin-impregnated fiber bundle 3 impregnated with the molten resin material 2 is drawn out from the outlet nozzle 5a of the crosshead 5 as a fiber-reinforced resin strand 9 while being twisted by the twisting rollers 11a and ib.
- the twisted holding rollers 12a and 12b give a twisting force to the twisted fiber-reinforced resin strands 9 and a twisting force in the same direction as the twisting rollers 11a and l ib.
- the fiber reinforced resin strand 9 is cut into a predetermined length by a pelletizer 13 to form a pellet.
- the apparatus for producing a fiber-reinforced resin strand manufactures pellets from the fiber-reinforced resin strand 9 by the above-described steps.
- each of the twisting rollers 11a and ib and the twisting holding rollers 12a and 12b is made of metal, and has irregularities formed on the surfaces thereof by knurling caloe.
- the twist roller 11a, the rib, the twist holding port roller 12a are formed by the unevenness formed on the surface by knurling. , 12b and the fiber-reinforced resin strand 9 increase in coefficient of friction, so that the occurrence of slipping when the fiber-reinforced resin strand 9 is pulled out can be suppressed.
- the twist rollers 11a and l ib are made of metal, they are less likely to wear and have a longer life than the twist rollers made of rubber rollers according to the conventional example. Pulls out fiber-reinforced resin strand 9 for a longer period of time and with a high production speed. You can continue.
- the surface hardness of the twist rollers 11a and ib and the twist holding rollers 12a and 12b is preferably Hs60 or more. That is, if the fiber reinforced resin strand is pulled out at a production rate of 40 mZmin, for example, a rubber roller will form a groove on the surface of the roller in one day, making it impossible to pull out the fiber reinforced resin strand. The situation has to be done. Therefore, the twist rollers 11a and l ib and the twist holding rollers 12a and 12b are made of metal, more specifically, S45C tempered material (hardness: Hs40), and the pitch is formed on the roller surface by a knurling cage. An unevenness of about lmm was formed.
- the iris is a knurled eye in which a plurality of quadrangular pyramidal convex portions having a rhombus bottom surface are formed so as to be adjacent to each other with the rhombus pieces interposed therebetween.
- the iris pitch of about lmm means that the distance between a pair of ridge lines parallel to each other among the rhombus ridge lines is lmm.
- the depth dimension from the portion constituting the rhombus ridge line (concave portion) to the apex of the quadrangular pyramid is set to about 0.4 mm.
- processing of the irregularities on the roller surface may be performed by other processing methods, such as electric discharge processing or wire cut processing, which are not particularly limited to knurling.
- the twisted rollers 11a and l ib and the twist holding rollers 12a and 12b have a preferred diameter, and the surface has irregularities of lmm pitch lmm. It was confirmed under the following conditions withdrawing at the production rate.
- the fiber-reinforced resin strand could be drawn out in a stable state even at a production rate of 40 mZmin, which did not cause slippage.
- the upper and lower twist rollers 11a and ib and the twist holding rollers 12a and 12b are all driven.
- the material of the upper and lower twist rollers 11a and l ib and the twist holding rollers 12a and 12b is SKD11
- the material is not particularly limited to SK D11, as long as it is a material that can secure a hardness of Hs60 or higher by a hardness improvement treatment such as heat treatment.
- the hardness measurement site the surface of the roller end, which has substantially the same hardness as the knurled roller surface, was measured.
- the apparatus for producing fiber reinforced resin strands according to the above embodiment is only one specific example of the present invention, the form of the apparatus for producing fiber reinforced resin strands is limited to the form according to the above embodiment.
- the design can be changed freely without departing from the technical idea of the present invention.
- a forming die 59 On the exit side of the cross head 55, a forming die 59, a cooler 60, a twisting roller (also called a cross roller capstan) 61a, 61b, and a drawing roller 62 are arranged in this order. It is installed.
- a twisting roller also called a cross roller capstan
- the reinforcing fibers 51, 51 ⁇ are immersed in the molten resin material 52 and impregnated with the resin in the crosshead 55. After that, the cross-sectional shape is determined by the shaping die 59 and cooled and hardened by the cooler 60.
- the twisting rollers 61a and 61b are rubber rollers and are configured to be driven to rotate in the reverse direction.
- the twisting rollers 61a and 61b are inclined in the opposite direction in the horizontal plane, and the fiber reinforced resin strand 53 is sandwiched at the intersection of the twisting rollers 61a and 61b and pulled out in the direction of the arrow. Accordingly, the fiber-reinforced resin strand 53 is rotated about the axis.
- twist is imparted between the cooler 60 of the fiber-reinforced resin strand 53 and the spreader 58a on the most downstream side.
- the fiber-reinforced resin strand 53 to which the twist is applied is cut by a pelletizer 63 provided at a position away from the drawing roller 62 of the cross head 55. (For example, see JP-A-5-169445.) 0
- the fiber-reinforced resin strand manufacturing apparatus according to Conventional Example 2 is configured to be able to continuously manufacture the fiber-reinforced resin strands for a long time.
- a reinforcing fiber bundle is introduced into a molten thermoplastic resin in a thermoplastic resin bath container (crosshead), and the reinforcing fiber bundle is impregnated with the thermoplastic resin, so that the thermoplastic resin
- a roller that intersects with the running start and is in contact with the reinforcing fiber bundle is arranged.
- the roller is configured with a shaft and a tube force, and the tube is rotatably supported around the shaft.
- a means for maintaining the twist of the fiber reinforced resin strand applied by the twist roller is provided between the twist roller for twisting the fiber reinforced resin strand and the pelletizer (for example, Japanese Patent Laid-Open No. 2003-175512). (See the publication).
- the twist roller of the apparatus for producing a fiber-reinforced resin strand according to Conventional Example 1 has a simple structure. In spite of this, it is considered excellent because the fiber-reinforced resin strand can be pulled while twisting. However, since the two cylindrical twist rollers are inclined in different directions and pulled at points where these twist rollers are in contact with each other (a point that is not connected by a line), the fiber-reinforced resin strands are There was a problem of slipperiness. In order to prevent such slipping, in the case of this conventional example 1, as described above, a rubber roller is used as the twisting roller.
- the first embodiment provides an apparatus for producing a fiber-reinforced resinous strand having excellent durability capable of producing a fiber-reinforced resinous strand at a high production rate without causing slippage. For the purpose.
- the fiber-reinforced resin strand according to the first embodiment is a device for manufacturing a fiber-reinforced resin strand, and is provided in a crosshead to which an extruder-powered molten resin material is continuously supplied.
- the outlet nozzle force and a twisting roller including at least a pair of rollers for twisting the fiber-reinforced resin strand and twisting at least a pair of the rollers included in the twisting roller on the surface. It is characterized by being made of a metal with unevenness.
- the outlet nozzle force of the cross head, the fiber-reinforced resin strand having the fiber-impregnated fiber bundle force is pulled out, and the fiber-reinforced resin strand is At least a pair of rollers to be twisted is made of a metal having concave and convex portions on the surface. Accordingly, the friction coefficient between the two rollers and the fiber reinforced resin strand increases due to the unevenness of the twisting roller, so that it is possible to suppress the occurrence of slipping when the fiber reinforced resin strand is pulled out.
- twisting roller is made of metal, it is less likely to wear than the twisting roller made of the rubber roller of Conventional Example 1 and has a long life, so that the fiber-reinforced resin strand can be continuously drawn out over a long period of time.
- a twist holding that also has a pair of roller forces for maintaining the twisted state of the fiber-reinforced resin strand at the downstream position of the twist roller. It is preferable that both rollers of the twist holding roller are made of a metal having irregularities formed on the surface.
- both the rollers of the twist holding roller which also serves as a pair of mouth rollers for maintaining the twisted state of the fiber-reinforced resin strand, are both made of a metal having irregularities formed on the surface. Has been. Therefore, the friction coefficient between the two rollers and the fiber-reinforced resin strand is increased due to the unevenness of the twist-holding roller, so that it is possible to suppress the occurrence of slipping when holding the twisted state of the fiber-reinforced resin strand. . In addition, since the twist holding roller is made of metal and is not easily worn and has a long life, the twist of the fiber-reinforced resin strand can be maintained for a long period of time.
- the surface hardness of the metal is preferably set to be equivalent to Hs60 or more.
- the metal surface hardness of the twist roller and the twist holding roller is set to be equal to or higher than Hs60. Therefore, the outer periphery of the twisting roller and the twisting holding roller has high hardness, excellent wear resistance, and a long service life. It is possible to improve the productivity of the fiber-reinforced resin strand.
- the outer diameter of each of the rollers is set to 50 mm or more.
- the fiber-reinforced resin strand and the twisting roller, and the fiber-reinforced resin strand and the twist-holding roller are theoretically in point contact, but actually the fiber-reinforced resin strand is slightly deformed. Face contact.
- the outer diameters of the twisting roller and the twisting holding roller are both set to 50 mm or more, the contact area of both the rollers, and further, both of them according to the outer diameters of the twisting roller and the twisting holding roller. Since the contact area between the roller and the fiber reinforced resin strand is widened, the anti-slip performance can be greatly improved.
- At least one of the specific roller pair of the twist roller and at least one of the two rollers of the twist holding roller is respectively It is preferable that the second roller is configured to be able to operate close to the other roller and to be pressed against the fiber-reinforced fiber strand with a constant or variable pressing force.
- At least one of a pair of twisted rollers and at least one of the two rollers of the twist holding roller can be brought into contact with and separated from each other. And it is comprised so that it can press with fixed or variable pressing force with respect to the fiber reinforced resin strand. Accordingly, it is possible to prevent a force slip that can increase the pressing force of the twisting roller and the twisting holding roller against the fiber-reinforced resin strand. Further, the pressing force of the twisting roller and the twist holding roller against the fiber reinforced resin strand can be adjusted to an appropriate pressing force according to the hardness of the fiber reinforced resin strand and the production rate of the fiber reinforced resin strand.
- the twist roller pair is set so that a minimum interval is set corresponding to the diameter of the fiber-reinforced resin strand. It is preferable to include a roller interval adjusting means capable of adjusting the interval between the rollers constituting the roller or the interval between the two rollers of the twist holding roller.
- a pair of twist rollers is formed so as to have a minimum interval set corresponding to the diameter of the fiber-reinforced resin strand.
- the distance between the rollers or the distance between the two rollers of the twist holding roller can be adjusted. Therefore, since the fiber-reinforced resin strand can be pressed so as to have an appropriate crushing cost depending on the diameter of the fiber-reinforced resin strand, it is possible to prevent the fiber-reinforced resin strand from being damaged. be able to.
- FIG. 4 is an explanatory diagram showing the overall configuration of the apparatus for producing a fiber-reinforced resin strand according to the second embodiment of the present invention.
- the reinforcing fiber (roving) 1 has a plurality of bobbins, in this example, three bobbins 25A to 25C. Are combined into a reinforcing fiber bundle 3.
- the reinforcing fiber bundle 3 is guided to a heating roller device 200 including a pair of heating rollers 220 and 230 arranged above and below in order to preheat the reinforcing fiber bundle 3.
- the bobbins 25A to 25C are equipped with reinforcing fiber back tension applying devices 100A to 100C, respectively, whereby the reinforcing fiber bundle 3 is applied to the pair of heating rollers 220 and 230 while back tension is applied.
- contact heating occurs when the rollers are in close contact with the heated heating rollers 220 and 230.
- an extruder 6 incorporating a screw 7 and a molten resin (molten thermoplastic resin) 2 are continuously supplied from the extruder 6 and a heating port
- a crosshead (molten resin bath container) 5 through which the reinforcing fiber bundle 3 heated in advance by the roller apparatus 200 is guided from the heating roller apparatus 200 is provided.
- a plurality of spreaders (opening and impregnating rollers) 8 for impregnating the molten fiber bundle 2 into the continuously supplied reinforcing fiber bundle 3 are disposed inside the cross head 5.
- the outlet of the crosshead 5 is used for shaping (molding) a high-temperature fiber-reinforced resin strand 9 comprising a fiber-impregnated reinforcing fiber bundle taken from the crosshead 5 and twisted.
- a shaping die 26 is installed.
- a cooling device 27 for cooling the high-temperature fiber-reinforced resin strand 9 from the crosshead 5 in cooling water is provided on the downstream side of the cooling device 27 .
- twist rollers 31a and 31b are provided on the downstream side of the cooling device 27 . Is provided.
- the fiber-reinforced resin strand 9 manufactured by the manufacturing apparatus of this embodiment and guided to the downstream side of the twisting rollers 31a and 31b is a pelletizer (strand cutter) on the downstream side of the twisting rollers 31a and 31b. ) It is cut at 13 and is ready for perez toy.
- FIG. 5 is a schematic configuration diagram showing the reinforcing fiber back tension applying device in FIG.
- a rotating drum body 25b is fixed to one end of a rotating shaft of a bobbin 25A formed by winding the reinforcing fiber 1.
- One end side of the belt-like shoe member 101 wound around the outer peripheral surface of the rotary drum body 25b halfway is connected to the hook on one end side of the tension coil spring 102 to which the hook on the other end side is fixed.
- Reference numeral 103 denotes a back tension adjusting slider that rotates a screw shaft (not shown) by the motor 103a to move the elevating nut portion 103b in the vertical direction.
- the other end side of the belt-like shoe member 101 is connected to the lifting nut portion 103b of the back tension adjusting slider 103.
- the knock tension applied to the reinforcing fiber 1 can be adjusted by increasing / decreasing the pressing force of the belt-like shoe member 101 by moving the elevating nut portion 103b in the vertical direction.
- a reinforcing fiber back tension applying device 100A for applying a back tension to the reinforcing fiber 1 from the bobbin 25A is constituted by the belt-shaped shoe member 101, the tension coil spring 102 and the back tension adjusting slider 103. ing. Further, the reinforcing fiber back tension applying device 100B for applying back tension to the reinforcing fiber 1 from the bobbin 25B, and the reinforcing fiber back tension applying device 100C for applying back tension to the reinforcing fiber 1 having the bobbin 25C force are: This is the same configuration as the reinforcing fiber back tension applying device 100A.
- FIG. 6 is a front view showing the configuration of the heating roller device in FIG. 4,
- FIG. 7 is a partial sectional view of the heating roller device shown in FIG. 6 as seen from the direction of arrow VII, and
- FIG. 9 is a cross-sectional view taken along the line IX-IX of FIG.
- 202 is a hollow quadrangular columnar support frame.
- the support frame 202 is fixed in an upright posture on the upper surface of the upper base plate 203 of the base body fixed to the floor surface.
- a pair of heating rollers 220 and 230 are attached to the support frame 202 so as to be rotatable in a state where they are vertically spaced apart from each other.
- the upper heating roller 220 includes a heating roller body and a heating roller support.
- the heating roller body includes an annular portion made of an aluminum alloy integrally including an outer peripheral portion 221 formed in an annular shape having a predetermined width and an annular plate-shaped rib portion 222 provided inside the outer peripheral portion 221.
- a boss portion 223 coupled to the rib portion 222 of the annular portion by bolting, and a ring-shaped plate-like heater (ring heater) 224 attached to one surface of the rib portion 222 and also having a heating line force. ing.
- the outer peripheral portion 221 is formed with a plurality of circumferential grooves arranged in parallel in the roller rotation axis direction, in this example, ten circumferential grooves 225, as grooves for guiding the reinforcing fiber bundle 3, with grooves. It has a heating roller.
- the heating roller support is attached to both ends of the heating roller rotating shaft 226 coupled to the boss portion 223 of the heating roller body using a key, and the heating roller rotating shaft 226 that rotates integrally with the heating roller body.
- a cylindrical bearing case 227 that is rotatably supported and accommodated by the formed bearing.
- the bearing case 227 of the upper heating roller 220 is fixed to the support frame 202 via an attachment member.
- the lower heating roller 230 has the same configuration as that of the upper heating roller 220, and includes a heating roller body and a heating roller support.
- the heating roller body includes an annular portion made of an aluminum alloy integrally having an outer peripheral portion 23 1 and an annular plate-like rib portion 232, and a boss portion 233 coupled to the rib portion 232 of the annular portion by bolting, And a heater 234 having an annular plate shape having a heating line force mounted on one surface of the rib portion 232.
- the outer peripheral portion 231 is formed with a plurality of circumferential grooves arranged in the roller rotation axis direction, in this example, nine circumferential grooves 235, as grooves for guiding the reinforcing fiber bundle 3, with grooves.
- a heating port is provided.
- the heating roller support is attached to the boss 233 of the heating roller body.
- Heating roller rotating shaft 236 coupled with a key, and a cylindrical shape that rotatably supports and accommodates the heating roller rotating shaft 236 that rotates integrally with the heating roller body by bearings mounted on both ends.
- a bearing case 237 A bearing case 237 of the lower heating roller 230 is fixed to the support frame 202 via an attachment member.
- a heating roller cover is provided that surrounds the heating rollers 220 and 230 in a state where the introduction portion and the extraction portion of the reinforcing fiber bundle 3 are opened.
- the reinforcing fiber bundle 3 guided in a state where the knock tension is applied is lowered by a quarter of the circumferential groove 225 at the left end in FIG. 7 of the upper heating roller 220 to the lower side.
- the heating roller 230 of Fig. 7 is lifted halfway around the left circumferential groove 235 in Fig. 7 ⁇
- Upper heating roller 220 The next circumferential groove 225 on the left end in Fig. 7 is lowered halfway down ⁇
- the lower heating roller 230 The next circumferential groove 235 at the left end in FIG. 7 is half-turned up, and is alternately wound around the heating rollers 220 and 230, and the right circumferential groove 225 in FIG. After a quarter turn, it is led to Crosshead 5.
- the entry guide 201 (see FIG. 4) for guiding the reinforcing fibers 1 from the bobbins 25A to 25C together as the reinforcing fiber bundle 3 to the upper heating roller 220 is not shown. It is.
- Electric power is supplied to the heater 224 of the rotating upper heating roller 220 from the first heating power source via slip rings 206 and 206 connected to a wiring having a first heating power source (not shown). It ’s like that.
- the slip rings 206 and 206 are supported by a slip ring bracket 205 that is fixed to the support frame 202 via a mounting member.
- the heater 234 of the rotating heat roller 230 is also supplied with electric power from a second heating power source (not shown) via slip rings 207 and 207.
- the slip rings 2 07 and 207 are supported by the slip ring bracket 205.
- 204 is power!
- the mounting plate is fixed to the support frame 202 and is located on the back surface of the heat rollers 220 and 230.
- 208 is a non-contact type radiation thermometer for measuring the temperature of the heating roller 220, which is attached to the mounting plate 204 so as to face the rib portion 222 of the upper heating roller 220.
- 209 is a heating thermometer.
- a non-contact type radiation thermometer To measure the temperature of the lower heating roller 230 mounted on the mounting plate 204 facing the rib 232 of the roller 230 This is a non-contact type radiation thermometer (see Fig. 8 and Fig. 9).
- the temperature controller (control panel) 210 Based on the temperature measurement value information given from the radiation thermometer 208, the temperature controller (control panel) 210 also has the power supply power for the first heating so that the temperature of the upper heating roller 220 becomes the target set value. While controlling the electric power supplied to the heater 224, based on the temperature measurement value information given from the radiation thermometer 209, the second heating power source is set so that the temperature of the lower heating roller 230 becomes the target set value. The force also controls the power supplied to the heater 234.
- a powder brake for adjusting the tension of the reinforcing fiber bundle 3 pulled out by the heating roller device.
- the sprocket 211 connected to the heating roller rotating shaft 226 of the upper heating roller 220 and the rotating shaft of the electromagnetic powder brake 214 fixed to the support frame 202 are connected.
- a chain 213 is stretched between the sprocket 212.
- FIG. 10 is a plan view schematically showing the configuration of the cooling device in FIG. 4, and FIG. 11 is a cross-sectional view taken along the line XI-XI in FIG.
- the cooling device 27 has a box shape with a lid that can be opened on the upper side, stores the cooling water, and passes through the cooling water through the fiber-reinforced resin strand 9 that is taken from the cross head 5 and travels in the horizontal direction.
- a plurality of water injection nozzles 29 for injecting water toward the fiber-reinforced resin strands 9 in cooling water, and a pressurized water supply pipe 30 for supplying pressurized water to these water injection nozzles 29. ing.
- the cooling water tank end plates 28a, 28a of the cooling water tank 28 are provided with U-shaped notch openings (not shown) so that the fiber-impregnated reinforcing fiber bundle can pass therethrough. Cooling water in the cooling water tank 28 spills out the U-shaped notch opening force of the cooling water tank end plates 28a, 28a Cooling water is supplied into the cooling water tank 28 from the pressurized water supply pipe 30 through the water jet nozzle 29, and the water level Is kept constant. In addition to the water injection nozzle, cooling provided separately Supply port for supplying cooling water into the water tank Cooling water may be supplied to keep the water level constant. Under the cooling water tank end plates 28a, 28a, a pump, a drain container, and a drain pipe (not shown) for returning and circulating the cooling water from the cooling water tank 28 are provided.
- the high-temperature fiber reinforced resin strand 9 taken from the cross head 5 is cooled in the horizontal direction in the cooling water.
- the water tank 28 is provided with a plurality of water injection nozzles 29 that are provided at intervals along the traveling direction of the fiber reinforced resin strands 9 and inject water toward the fiber reinforced resin strands 9 in the cooling water.
- the fiber-reinforced resin that runs in the cooling water over the inlet side and the outlet side by stirring the cooling water in the cooling water tank by the water flow generated by jetting water from these water jet nozzles 29.
- heat exchange between the fiber-reinforced resin strand 9 and the cooling water can be performed more efficiently than a cooling water tank without the water injection nozzle 29.
- the cooling rate for the fiber-reinforced resin strand 9 can be increased.
- FIG. 12 is an explanatory diagram of the twist roller in FIG.
- the pair of twisting rollers 31a and 31b hold the respective rotation axes on parallel planes (horizontal planes), and the fiber reinforced grease strands from the cooling device 27 in a state where the rotation axes intersect each other. It is arranged so that 9 is sandwiched. That is, in FIG. 12, the rotation axis of the upper twisting roller 31a and the rotation axis of the lower twisting roller 31b are viewed in a plane perpendicular to the take-off direction (traveling direction) of the fiber-reinforced resin strand 9. Are set in directions opposite to each other with respect to the take-off direction and at a predetermined angle with the same angle.
- the upper twist roller 31a made of metal has unevenness 31Aa formed by knurling over the entire roller surface (roller outer peripheral surface).
- the lower twist roller 31b made of metal has unevenness 31Ba formed by knurling over the entire roller surface (roller outer peripheral surface).
- the pair of twist rollers 31a and 31b are both rotationally driven. It is comprised so that.
- the pair of twisting rollers 31a and 31b have a function of imparting twist to the fiber bundle for reinforcing and impregnating the resin, and a function of taking the fiber-reinforced resin strand 9 from the cooling device 27. For this reason, it is not necessary to provide a separate take-up machine on the downstream side of the twisting rollers 31a and 31b. If the installation distance from the twisting rollers 31a, 31b to the strand cutter is long, or if you want to pick up the fragile strands at high speed, twist them as a take-up machine downstream of the twisting rollers 31a, 31b.
- a pair of take-off rollers (for example, the rollers 12a and 12b in FIG. 1) having the same configuration as the rollers 31a and 31b may be provided.
- the pair of twist rollers 31a and 31b is made of metal, and the concave and convex portions 31Aa and 31Ba are formed on the roller surface. Accordingly, since the coefficient of friction between the metal twist rollers 31a and 31b and the fiber-reinforced resin strand 9 is increased, the cooling effect of the fiber-reinforced resin strand 9 by the cooling device 27 is surely combined. It is possible to twist the fiber-reinforced resin strand 9 without causing the fiber-reinforced resin strand 9 to slip. In addition, since it is a metal twist roller, it is less likely to wear than a rubber twist roller and has a longer life, so that it can be taken over a long period of time without causing slippage in the long fiber reinforced resin strand 9. it can.
- the reinforcing fiber bundle 3 is subjected to the resin impregnation while passing through each spreader 8 in the crosshead 5 filled with the high-temperature melted resin 2 supplied from the extruder 6, and is impregnated with the resin. It is made into a fiber bundle for reinforcement. Further, this fiber-impregnated reinforcing fiber bundle is twisted by a twisting operation by the twisting rollers 31a and 31b, and a twist is generated and grown from the spreader 8 on the downstream side in the crosshead 5 as a starting point.
- the reinforcing fiber bundle 3 is impregnated by the cross head 5 with the molten resin 2 supplied from the extruder 6, and the twisting roller 31a , 31b twists the fiber-impregnated reinforcing fiber bundle, and the continuous fiber strand 9 is made of the fiber-impregnated reinforcing fiber bundle to which the twist is applied from the crosshead 5. Taken over.
- the high-temperature fiber-reinforced resin strand 9 continuously taken from the cross head 5 through the shaping die 26 is guided to the cooling device 27, travels in the cooling water in the cooling water tank 28, and Then, it is cooled and hardened by receiving the water flow from the water injection nozzles 29 arranged in a staggered manner so as to sandwich the travel path, and is guided to the twisting rollers 31a and 31b. Twist operation and take-up are performed by the twist rollers 31a and 31b with respect to the fiber-reinforced resin strand 9 that has been cooled from the cooling device 27.
- the fiber-reinforced resin strand 9 guided to the downstream side of the twisting rollers 31a and 3 lb is cut by the pelletizer 13 on the downstream side of the twisting rollers 31a and 31b to be pelletized. ! / Speak.
- the apparatus for producing a long fiber reinforced resin strand includes the heating roller device 200 having the pair of heating rollers 220 and 230 on the upstream side of the crosshead 5, A back tension applying device comprising reinforcing fiber back tension applying devices 100A to 100C for applying a back tension to the reinforcing fiber bundle 3 wound around the heating rollers 220 and 230 on the upstream side of the heating roller device 200. It has.
- the reinforcing fiber bundle 3 is alternately wound a plurality of times around the pair of heating rollers 220 and 230 arranged above and below in a state in which the back tension is applied by the back tension applying device. , 234, while being in close contact with the hot roller 220, 230 heated by heat, and continuously led to the cross head 5 in a state of being preheated at room temperature.
- the heating roller body of the calo heat rollers 220 and 230 has a diameter of about 250 mm and a width of the outer peripheral portion 221 of about
- the distance between the heating roller rotating shafts of the pair of heating rollers 220 and 230 is about 4
- the length of the cooling water tank 28 of the cooling device 27 is 2 m.
- the distance between the center lines of adjacent water injection nozzles 29 in the strand travel direction is 70 mm.
- the twisting rollers 31a and 31b are both rotationally driven mechanisms, and are made by quenching SKD11 (alloy tool steel) tempered material, with irregularities of lmm pitch lmm formed on the entire roller surface by knurling. .
- FIG. 13 is a view for explaining another example of the back tension applying device according to the second embodiment.
- Fig. 13 [Koo! Ll li mabohi, 25A rotating shaft 25a [This is connected, and the bobbin 25A is driven to rotate as the reinforcing fiber 1 is picked up by the burning rollers 31a, 31b.
- This is a bobbin drive motor.
- 112 and 113 are fixed guide rollers, and 114 is a dancer roller that can move up and down.
- 115 is a dancer roller position detector. It is configured using a rotary potentiometer that detects the movement of the robot as a rotation angle
- Positional force when a predetermined back tension is applied to the reinforcing fiber 1 on the entrance guide 201 of the heating roller device 200 is set as a reference position of the dancer roller 114.
- the back tension applying device 1 10A is configured.
- the reinforcing fiber back tension applying devices 110B and 110C for applying knock tension to the reinforcing fibers 1 from the other bobbins 25B and 25C have the same configuration as the reinforcing fiber back tension applying device 110A.
- the reinforcing fiber back tension applying devices 110A to 110C constitute a knock tension applying device that applies a back tension to the reinforcing fiber bundle 3 wound around the heating rollers 220 and 230.
- FIG. 14 is a view for explaining another example of the back tension applying device according to the second embodiment.
- 32A is a reinforcing fiber storage container for storing a long reinforcing fiber 1 wound in a cylindrical shape.
- the reinforcing fiber 1 drawn out from the reinforcing fiber storage container 32A is applied with a back tension by running in a zigzag manner by the plurality of guide bars 121, and a pair of heating rollers 200 of the heating roller device 200 are applied with the knock tension applied.
- the plurality of guide bars 121 constitute a reinforcing fiber back tension applying device 120A that applies back tension to the reinforcing fibers 1 from the reinforcing fiber storage container 32A.
- the reinforcing fiber back tension applying devices 120B and 120C for applying knock tension to the reinforcing fibers 1 from the other reinforcing fiber storage containers 32B and 32C have the same configuration as the reinforcing fiber back tension applying device 120A. is there.
- the reinforcing fiber back tension applying devices 120A to 120C constitute a knock tension applying device that applies a back tension to the reinforcing fiber bundle 3 wound around the heating rollers 220 and 230.
- the force explaining what alternately winds the reinforcing fiber bundles around the two heating rollers is not limited to this.
- three or more heating elements are used.
- a roller may be used.
- the reinforcing fiber bundles may be alternately wound around the two heating rollers, and this can increase the contact length per winding. it can.
- Prior art 1 is to produce long fiber reinforced resin strands with high adhesion between reinforcing fibers and resin.
- the molten resin material 52 is continuously supplied from the extruder 56 into the crosshead 55.
- a shaping die 59, a cooler 60, twist rollers (also called cross roller capstans) 61a and 61b, and a drawing roller 62 are arranged in this order.
- the reinforcing fibers 51, 51... are immersed in the molten resin material 52 in the crosshead 55, impregnated with the resin, and then shaped by the shaping die 59 to have a cross-sectional shape. It is defined and cooled and hardened in the cooler 60.
- the twisting rollers 61a and 61b are a pair of rubber rollers, and are configured to be driven to rotate in reverse to each other. These twist rollers 61a, 61b Is disposed in a horizontal plane inclined in the opposite direction.
- the fiber reinforced resin strand 53 is sandwiched between the twisting rollers 61a and 61b and is pulled out in the direction of the arrow. Is rotated about the axis.
- the applicant of the present invention continuously pulls the fiber-reinforced resin strand having a fiber bundle strength for impregnating and reinforcing the resin impregnated with a twist from the crosshead.
- a method in which the reinforcing resin bundle is opened in the cross head and the portion of the synthetic resin that promotes the impregnation of the resin is particularly heated. Proposed (conventional technology 2: JP-A-6-254850). In this case, for example, a hot water introduction type impregnation roller is used as the impregnation roller in the cross head in order to perform the heating.
- the present inventors preheat the reinforcing fiber bundle introduced into the crosshead, rather than heating the synthetic resin at the portion that promotes the impregnation of the resin in the crosshead. I thought that I should do it.
- the reinforcing fiber introduced into the crosshead can be preheated if necessary. No means for doing so are shown.
- JP-A-5-162135 discloses a method for producing a fiber-reinforced thermoplastic resin structure by coating and impregnating molten thermoplastic resin while taking continuous reinforcing fibers. Then, before coating and impregnating the molten thermoplastic resin to the reinforcing fiber, the reinforcing fiber was preheated to a temperature higher than the melting temperature of the thermoplastic resin by a hot-air preheating furnace, so that the reinforcing fiber was melted. Demonstrates how to make a fiber reinforced thermoplastic resin structure that increases the take-up speed by promoting impregnation with thermoplastic resin! / Speak (Prior Art 3).
- a reinforcing fiber (glass roving fiber) is introduced into a hot-air preheating furnace and heated to about 300 ° C.
- An example of obtaining a fat structure (glass fiber reinforced nylon 6Z6) is shown.
- the apparatus for producing a fiber-reinforced resin strand according to the second embodiment is an apparatus for producing a fiber-reinforced resin strand, and is a long reinforcing fiber continuously introduced from the upstream side.
- a cooling device for cooling the fiber-reinforced resin strand that also has a reinforcing fiber bundle force drawn from the crosshead, and a reinforcing fiber bundle that is provided upstream of the crosshead and led to the crosshead is preheated.
- the heating roller device is capable of alternately winding the reinforcing fiber bundle a plurality of times, and has at least two heating rollers each generating heat, and the back tension applying device. Is characterized in that a back tension is applied so as to bring the reinforcing fiber bundle into contact with each of the heating rollers.
- the fiber-reinforced resin strand manufacturing apparatus includes a heating roller device provided on the upstream side of the cross head, and an upstream side of the heating roller device.
- a knock tension applying device that applies back tension to the reinforcing fiber bundle wound around each heating roller.
- the reinforcing fiber bundle is alternately wound a plurality of times on at least two heating rollers arranged above and below the heating roller device in a state in which the back tension is applied by the knock tension applying device.
- Drive while in close contact with the heated heating roller Then, it is continuously guided to the crosshead in a preheated state, not at room temperature.
- At least one of the heating rollers is a groove for guiding the reinforcing fiber bundle, and a roller rotation shaft is provided on the outer periphery of the roller.
- U which preferably has multiple circumferential grooves parallel in the direction.
- FIG. 15 is an explanatory diagram of the structure of the apparatus for producing a fiber-reinforced resin strand according to the third embodiment of the present invention.
- a reinforcing fiber bundle 3 composed of a plurality of bobbins 4 and a reinforcing fiber 1 fed out is made up of a pair of heating rollers 220, 230 arranged above and below for pre-heat treatment. It is led to a heating roller device 200 equipped with.
- the reinforcing fiber bundle 3 is alternately wound around the pair of heating rollers 220 and 230 while being back-tensioned by a plurality of guide bars 33, thereby being applied to the heated heating rollers 220 and 230.
- the temperature is raised by contact heating due to close contact.
- An extruder 6 incorporating a screw 7 is provided immediately downstream of the heating roller device 200, and molten resin (molten thermoplastic resin) 2 is continuously supplied from the extruder 6,
- a cross head (molten resin bath container) 5 to which the heated reinforcing fiber bundle 3 from the heating roller device 200 is guided is provided.
- a plurality of spreaders (defibration and impregnation rollers) 8 for impregnating the molten fiber 2 into the continuously supplied reinforcing fiber bundle 3 are disposed.
- the outlet of the crosshead 5 is used for shaping (molding) the high-temperature fiber-reinforced resin strand 9 which is a fiber bundle for reinforcing and impregnating the resin impregnated with the twist taken from the crosshead 5.
- a shaping die 26 is attached.
- a cooling device 27 for cooling the high-temperature fiber-reinforced resin strand 9 guided from the crosshead 5 in cooling water. Is provided.
- a twister 34 is provided immediately downstream of the cooling device 27.
- the fiber-reinforced resin strand 9 manufactured by the manufacturing apparatus according to this embodiment and guided to the downstream side of the twister 34 is cut by a pelletizer (Strand cutter) 13 on the downstream side of the twister 34. Pereztoy is being tricked.
- the superheated roller device 200 has the same configuration as that of the second embodiment described with reference to Figs.
- the cooling device 27 has the same configuration as that of the second embodiment described with reference to FIGS. 10 and 11, and thus the description thereof is omitted here.
- the twisting machine 34 has a pair of twisting rollers 3 la and 3 lb. Since these twist rollers 31a and 31b have the same configuration as that according to the second embodiment described with reference to FIG. 12, description thereof is omitted here.
- the reinforcing fiber bundle 3 that also has reinforcing fiber force fed out from the plurality of bobbins 4 is guided to a pair of heating rollers 220 and 230 arranged above and below, and is applied to the heating rollers 220 and 230 while applying a knock tension.
- the temperature is raised by contact heating and guided into the crosshead 5.
- the reinforcing fiber bundle 3 passes through each spreader 8 in the cross head 5 filled with the high-temperature molten resin 2 supplied from the extruder 6 and is subjected to the resin impregnation in the process.
- this fiber-impregnated reinforcing fiber bundle is twisted by the twister 34 to generate and grow a twist starting from the downstream spreader 8 in the crosshead 5.
- the reinforcing fiber bundle 3 is impregnated with the cross fiber 5 into the molten fiber 2 supplied from the extruder 6 and twisted by the twisting machine 34 to impart twist to the fiber bundle for reinforcing resin impregnation.
- the fiber-reinforced resin strands 9 having the fiber bundle strength for reinforcing the resin impregnated with the twist are continuously taken up from the crosshead 5.
- the high-temperature fiber-reinforced resin strand 9 continuously taken from the cross head 5 through the shaping die 26 is guided to the cooling device 27 and travels in the cooling water in the cooling water tank 28.
- it is cooled and hardened by receiving a water flow from water jet nozzles 29 (see FIGS. 10 and 11) arranged in a staggered manner so as to sandwich the travel path, and is guided to the twisting rollers 31a and 31b.
- the fiber reinforced resin strands 9 cooled from the cooling device 27 are twisted and taken up by the twisting rollers 31a and 3 lb.
- the fiber reinforced resin strand 9 guided downstream of the twister 34 is cut by the pelletizer 13 on the downstream side of the twister 34 so as to be pelletized (FIG. 16). reference).
- the apparatus for producing a fiber-reinforced resin strand is a high-temperature fiber-reinforced resin that is taken out from the crosshead 5 as the cooling device 27 between the crosshead 5 and the twister 34.
- a plurality of strands 9 are provided in the cooling water tank 28 where the strand 9 travels in the cooling water in the horizontal direction at intervals along the traveling direction of the fiber reinforced resin strands 9, toward the fiber reinforced resin strands 9 in the cooling water.
- a water injection nozzle 29 for injecting water is provided.
- the fiber reinforced resin that runs in the cooling water over the inlet side and the outlet side by stirring the cooling water in the cooling water tank by the water flow generated by jetting water from these water jet nozzles 29.
- the strand 9 is continuously brought into contact with a new cooling water flow so that the heat of the long fiber reinforced resin strand 9 and the cooling water can be reduced. It is possible to increase the cooling rate for the long fiber reinforced resin strand 9 by efficiently performing the exchange.
- the length of the cooling water tank (fiber reinforced) is compared to the conventional take-up speed of 40 mZ or less.
- the fiber-reinforced resin strand 9 can be sufficiently cooled without increasing the length in the running direction of the resin strand. Therefore, the fiber-reinforced resin strand 9 in which the reinforcing fiber bundle is sufficiently impregnated with the resin material at a higher take-up speed than that of the conventional case, for example, a take-up speed exceeding 40 mZ, is strengthened by the twister 34.
- the fat strand 9 can be produced without causing slippage.
- the water injection nozzles 29 are staggered so as to sandwich the fiber-reinforced resin strand running path. Therefore, the fiber-reinforced resin strand 9 can be prevented from being displaced in one direction by the water flow from the water injection nozzle 29, and the fiber-reinforced resin strand 9 can be run straight and smoothly. In addition, it may be arranged so as to face each other instead of the staggered arrangement.
- the twister 34 draws the function of imparting twist to the fiber bundle for reinforcing the resin-impregnated fiber and the continuous fiber-reinforced resin strand 9. It is composed of a pair of twisting rollers 31a and 31b having a function of taking off, and there is no need to provide a separate take-up machine. Therefore, the apparatus configuration can be simplified.
- the apparatus for producing a fiber-reinforced grease strand further includes a heating roller that heats the reinforcing fiber bundle 3 upstream of the crosshead 5 prior to introduction into the crosshead 5.
- a device 200 is provided.
- the heating roller device 200 it is possible to eliminate the badness of the impregnation degree and to greatly suppress the increase in the tension, and to take up the fiber-reinforced resin strand 9 ( Higher production speed can be achieved.
- the twister 34 has a pair of metal twisting rollers 31a and 31b in which irregularities 31Aa and 31Ba (see Fig. 12) are formed on the roller surface. It is comprised by. Therefore, since the coefficient of friction between the metal twist rollers 31a and 31b and the fiber reinforced resin strand 9 is increased, the sufficient cooling effect of the fiber reinforced resin strand 9 by the cooling device 27 is increased. It is possible to twist the fiber-reinforced resin strand 9 without causing the fiber-reinforced resin strand 9 to slip. In addition, since it is a metal twist roller, it is less likely to wear than a rubber twist roller and has a longer life, so that it can be taken up over a long period of time without causing the fiber reinforced resin strand 9 to slip. .
- the cooling device 27 in Examples 1 to 4 will be described.
- the length of the cooling water tank 28 is 2 m.
- the distance between the center lines of adjacent water jet nozzles 29 in the strand running direction is 70 mm.
- the length of the cooling water tank 28 in Comparative Example 1 and Comparative Example 2 is also 2 m (Comparative Examples 1 and 2: no water injection nozzle 29).
- the heating rollers 220 and 230 were heated to a roller temperature of 300 ° C. At this time, the temperature of the reinforcing fiber bundle 3 introduced into the crosshead 5 was about 250 ° C.
- twisting rollers 31a and 31b of the twisting machine 34 in Examples 1 to 4 and Comparative Examples 1 and 2 will be described.
- the twisting rollers 31a and 31b are both rotationally driven mechanisms, and are made of an SKD 11 (alloy tool steel) tempered material, and unevenness with an iris pitch lmm is formed on the entire roller surface by knurling.
- Example 1 under the limitation of a cooling nose as short as 2m, the outer diameter is 4mm and it is difficult to cool down
- the fiber reinforced resin strand could be taken up at a speed exceeding 50 mZ.
- Example 2 a slightly thin long fiber reinforced resin strand with an outer diameter of 2.4 mm is 90 mZ (2 m), with the restriction of a short cooling path of 2 m. ) We were able to pick up at a higher speed than before.
- Example 3 is a case in which, when a 4 mm fiber-reinforced resin strand having the same diameter as Example 1 is taken, the molten resin temperature in the crosshead is made higher than that of Example 1 to make it difficult to cool. . Even when the outer diameter is large and the temperature is very high compared to the normal temperature, the long fiber reinforced resin strand has a speed of more than 40mZ, which is faster than the conventional take-up speed (see Comparative Example 1) with a cooling path as short as 2m. I was able to take over.
- Example 4 is a condition in which a 2.4 mm fiber-reinforced resin strand having the same diameter as that of Example 2 is taken up, and the molten resin temperature in the crosshead is made higher than that of Example 2 to make it difficult to cool. This is the case. Even when the temperature is very high compared to normal, the cooling path is as short as 2m, and it is 90mZ minutes (more than that, the take-up speed has been increased). The fiber-reinforced rosin strand could be taken up.
- Comparative Example 1 was operated by using a 4 mm fiber-reinforced resin strand having the same diameter as Example 3 under the same preheating conditions as Example 3, and water was injected into the cooling water tank using a water injection nozzle. It is different in that there is no connection. In Comparative Example 1, slip occurred when the speed exceeded 26 mZ, which was a lower speed than Example 3 (take-off speed: 44 mZ).
- Comparative Example 2 was operated by using a 2.4 mm fiber reinforced resin strand having the same diameter as Example 4 under the same preheating conditions as Example 4, and water injection by a water injection nozzle was performed in the cooling water tank. It is different in that it is not performed.
- slip occurred when the speed exceeded 40 mZ, which was a lower speed than Example 4 (take-up speed: 90 mZ or more).
- the reinforcing fiber bundle is heated by the heating roller device 200.
- the fiber reinforced resin strand manufacturing apparatus according to the present invention does not need to use the heating roller device. It is effective even for those in which the melted resin viscosity in the crosshead is properly maintained.
- This conventional apparatus for producing a fiber-reinforced resin strand is designed to produce a fiber-reinforced resin strand with high adhesion between the reinforcing fiber and the resin.
- the molten resin material 52 is continuously supplied from the extruder 56 into the cross head (impregnation head) 55.
- a shaping die 59, a cooler 60, a twisting roller (also called a cross roller capstan) 61a, 61b, and a drawing roller 62 are arranged in this order.
- the reinforcing fibers 51, 51 ⁇ are immersed in the molten resin material 52 in the crosshead 55 and impregnated with the resin, and then the cross-sectional shape thereof is determined by the shaping die 59 and cooled. Cooled and hardened in vessel 60.
- the twisting rollers 61a and 61b are rubber rollers, and are configured to be driven in reverse rotation. These twisting rollers 61a and 61b are inclined in the opposite direction in the horizontal plane.
- the fiber reinforced resin strands 53 are sandwiched at the intersections of these twisting rollers 61a and 6 lb and pulled in the direction of the arrow. By pulling, the fiber-reinforced resin strand 53 is rotated around the axis.
- twist is imparted between the cooler 60 and the most downstream spreader 58a in the crosshead 55.
- the fiber-reinforced resin strand 53 to which the twist is applied is cut by a pelletizer 63 provided at a position away from the drawing roller 62.
- the fiber-reinforced resin strands such as the fiber bundles for reinforcing and impregnating the resin impregnated with the twist from the cross head (impregnation head), are continuously taken out, and the fiber-reinforced resin strands are obtained.
- the take-up speed (production rate) of the fiber reinforced resin strand exceeds 40 mZ, Slip occurred between the twisting roller for twisting and pulling the fiber reinforced resin strand and the fiber reinforced resin strand.
- a fiber-reinforced resin strand made of a fiber-impregnated reinforcing fiber bundle to which a twist is applied from a cross head is continuously taken to produce a fiber-reinforced resin strand.
- a fiber-reinforced resin strand production apparatus that can produce fiber-reinforced resin strands at a higher take-up speed (production speed) than conventional, for example, take-up speed exceeding 40 mZ.
- the apparatus for producing a fiber-reinforced resin strand according to the third embodiment is an apparatus for producing a fiber-reinforced resin strand, and is a long reinforcing fiber continuously introduced from the upstream side.
- the cooling device comprises
- a cooling water tank for storing the cooling water so that the fiber-reinforced resin strand taken from the crosshead can be passed through the cooling water, and a traveling direction of the fiber-reinforced resin strand in the cooling water tank. And a plurality of water jet nozzles that spray water toward the fiber-reinforced resin strands in the cooling water.
- the apparatus for producing a fiber-reinforced resin strand includes a cooling device provided between the cross head and the twisted roller.
- a cooling water tank for storing the cooling water for passing the high-temperature fiber reinforced resin strand taken from the cross head a water injection nozzle for injecting water toward the fiber reinforced resin strand in the cooling water is fiber reinforced.
- a plurality of the strands are provided at intervals in the running direction of the resin strands. Therefore, by stirring the cooling water in the cooling water tank with the water flow generated by jetting water from these water jet nozzles, the fiber reinforced resin strands passing through the cooling water are continuously applied. A new cooling water flow can be introduced and brought into contact.
- a fiber-reinforced resin strand in which a reinforcing fiber bundle is sufficiently impregnated with a resin material at a higher take-up speed than the conventional one, for example, a take-up speed exceeding 40 mZ, can be obtained with a long fiber reinforced It can be produced without slipping of the fat strands.
- the water injection nozzles are arranged oppositely or in a staggered manner so as to sandwich the fiber-reinforced resin strand running path. Better!/,.
- the water injection nozzle that injects water toward the fiber reinforced resin strand traveling in the cooling water is opposed to sandwich the fiber reinforced resin strand traveling path. Arranged or staggered. Therefore, it is possible to prevent the fiber-reinforced resin strand from being displaced in one direction by the water flow from the water jet nozzle, and the fiber-reinforced resin strand can be run straight and smoothly.
- the twisting machine holds the respective rotation axes so as to be positioned on parallel planes, and It is preferably composed of a pair of twisting rollers arranged so as to sandwich the fiber-reinforced resin strands with the angles on the plane being different from each other, and also used as the take-up machine. ,.
- the twister holds the respective rotation axes so as to be positioned on parallel planes (horizontal planes), and the rotation axes on the planes. Consisting of a pair of twist rollers arranged so as to sandwich the fiber reinforced resin strands with the angles being different from each other. Does it have a function to take up fiber-reinforced rosin strands? Therefore, this twister can also be used as a take-up machine, and a separate take-up machine is not required. Therefore, the apparatus configuration can be simplified.
- a preheating heating device is provided on the upstream side of the crosshead and heats the reinforcing fiber bundle guided to the crosshead.
- U who prefers to be further prepared.
- a preheating heating device for heating the reinforcing fiber bundle is provided on the upstream side of the crosshead.
- the melted resin in the reinforcing fiber bundles is increased by increasing the viscosity of the molten resin by lowering the temperature of the molten resin in the crosshead.
- the tension (retraction resistance) of the reinforcing fiber bundle traveling while being pulled inside the crosshead increases. Therefore, by providing the preheating heating device, it is possible to eliminate the badness of the impregnation degree and to greatly suppress the increase in the tension, and to take up the fiber-reinforced resin strand (production speed). Can be made much faster.
- the twisting machine is composed of at least a pair of twisting rollers made of metal having irregularities formed on the roller surface.
- the twister is configured by at least a pair of metal-made twisting rollers having irregularities formed on the roller surface. Accordingly, the coefficient of friction between the metal twisting roller and the fiber reinforced resin strand is increased, so that a pair of metals is combined with the sufficient cooling effect of the fiber reinforced resin strand by the cooling device.
- the slip between the fiber reinforced resin strand and the twist roller can be more reliably suppressed. Further, since it is a metal twisting roller, it is less likely to wear than a rubber twisting roller and has a long life, so that it can be taken over a long period of time without causing slippage in the long fiber reinforced resin strand.
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Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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EP07741862.2A EP2014433B1 (en) | 2006-04-28 | 2007-04-18 | Apparatus and method for production of fiber-reinforced resin strand |
US12/294,741 US8147635B2 (en) | 2006-04-28 | 2007-04-18 | Manufacturing apparatus of fiber-reinforced resin strand |
CA2646017A CA2646017C (en) | 2006-04-28 | 2007-04-18 | Manufacturing apparatus of fiber-reinforced resin strand |
Applications Claiming Priority (6)
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JP2006-125962 | 2006-04-28 | ||
JP2006125962A JP4038521B2 (ja) | 2006-04-28 | 2006-04-28 | 長繊維強化樹脂ストランドの製造装置 |
JP2006-130555 | 2006-05-09 | ||
JP2006130555A JP4064995B2 (ja) | 2006-05-09 | 2006-05-09 | 繊維強化樹脂ストランドの製造装置 |
JP2006-161849 | 2006-06-12 | ||
JP2006161849A JP3997252B1 (ja) | 2006-06-12 | 2006-06-12 | 長繊維強化樹脂ストランドの製造装置 |
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US (1) | US8147635B2 (ja) |
EP (1) | EP2014433B1 (ja) |
KR (1) | KR101028962B1 (ja) |
CA (1) | CA2646017C (ja) |
WO (1) | WO2007125792A1 (ja) |
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US8038428B2 (en) | 2006-12-26 | 2011-10-18 | Kobe Steel, Ltd. | Manufacturing apparatus of fiber-reinforced resin strand |
WO2012127814A1 (ja) * | 2011-03-23 | 2012-09-27 | 株式会社神戸製鋼所 | 長繊維強化樹脂ストランドの製造方法及び製造装置 |
JP2012201989A (ja) * | 2011-03-23 | 2012-10-22 | Kobe Steel Ltd | 長繊維強化樹脂ストランドの製造方法及び製造装置 |
US9168711B2 (en) | 2011-03-23 | 2015-10-27 | Kobe Steel, Ltd. | Production method and production device of long fiber reinforced plastic strand |
CN106182494A (zh) * | 2016-09-07 | 2016-12-07 | 东华大学 | 一种连续纤维增强热塑性预浸带的制备工艺 |
CN106182494B (zh) * | 2016-09-07 | 2018-10-23 | 东华大学 | 一种连续纤维增强热塑性预浸带的制备工艺 |
CN112936806A (zh) * | 2021-04-20 | 2021-06-11 | 河北科技大学 | 连续纤维增强复合材料丝材制造设备 |
Also Published As
Publication number | Publication date |
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KR101028962B1 (ko) | 2011-04-12 |
CA2646017C (en) | 2011-11-01 |
US20100224309A1 (en) | 2010-09-09 |
EP2014433B1 (en) | 2015-11-18 |
EP2014433A4 (en) | 2013-03-06 |
CA2646017A1 (en) | 2007-11-08 |
US8147635B2 (en) | 2012-04-03 |
EP2014433A1 (en) | 2009-01-14 |
KR20080109883A (ko) | 2008-12-17 |
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