JP2020029084A - Fiber-reinforced resin production apparatus and molding apparatus - Google Patents

Abstract

To provide a fiber-reinforced resin production apparatus and a molding apparatus capable of preventing a continuous fiber from being held as compared with a case where an outlet is widened by splitting a nozzle when suppressing clogging.SOLUTION: The fiber-reinforced resin production apparatus is equipped with an impregnation part for impregnation of a resin into a plurality of continuous fibers, and a die having an outlet for molding a linear fiber-reinforced resin by letting the continuous fiber having been impregnated with the resin go therethrough and capable of continuously changing an aperture area of the outlet.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a fiber reinforced resin manufacturing device and a molding device.

  Patent Document 1 discloses that long fibers are uniformly introduced into a synthetic resin bath container, and the resin-impregnated long fibers are taken out from an outlet nozzle of the synthetic resin bath container while the long fibers are impregnated with the synthetic resin. A method for producing a reinforced synthetic resin strand is described. In this method for producing a fiber-reinforced synthetic resin strand, the long fibers are opened in a synthetic resin bath container to heat the portion of the synthetic resin that promotes resin impregnation to enhance the impregnation.

  Patent Document 2 describes a method for producing a resin-impregnated long fiber in which a molten thermoplastic resin is supplied to an impregnating die, a fiber bundle is introduced, the thermoplastic resin is impregnated into the fiber bundle, and pulled out from a nozzle. . In the invention of this document, at least two overhanging portions are provided in the molten resin flow path, extending in opposite directions along the traveling direction of the fiber bundle. At least one of the overhangs is a first movable choke bar which is inserted in a direction perpendicular to the fiber bundle, and has its end extended into the molten resin flow path and adjusted in position, and runs on the upper surface of the overhang. The fiber bundle is spread by applying a fiber bundle to be impregnated, and impregnated with a thermoplastic resin.

JP 06-254850 A Japanese Patent No. 5098228

  An object of the present invention is to provide a fiber reinforced resin manufacturing apparatus and a molding apparatus capable of preventing continuous fiber from being pinched, as compared with a case where a nozzle is divided and an outlet is expanded when suppressing hole clogging. .

  Aspect 1 has an impregnating section for impregnating a resin into a plurality of continuous fibers, and an outlet for molding a linear fiber-reinforced resin through the continuous fibers impregnated with the resin, and continuously reducing the opening area of the outlet. And a die capable of being changed.

  In a second aspect, the outlet is formed at a portion where the first hole formed in the first plate and the second hole formed in the second plate overlap, and the first plate and the second plate are relatively opposed to each other. The fiber-reinforced resin manufacturing apparatus according to the aspect 1, wherein the opening area of the outlet is changed by moving the opening.

  In a third aspect, the die has a side wall having an opening serving as the outlet, and a cam that moves into and out of the impregnated part through the opening to change an opening area of the outlet. This is a fiber reinforced resin manufacturing device.

  Aspect 4 is any one of Aspect 1 to Aspect 3 provided with a discharge mode forming means for selectively forming a normal mode for forming the fiber reinforced resin and a discharge mode in which the opening area of the outlet is larger than the normal mode. 3. A fiber-reinforced resin production apparatus according to (1).

  A fifth aspect is the fiber-reinforced resin manufacturing apparatus according to the fourth aspect, wherein the discharge mode forming means forms the discharge mode from the normal mode at a predetermined timing.

  Aspect 6 is the fiber reinforced resin manufacturing apparatus according to Aspect 4, wherein the discharge mode forming means forms the discharge mode from the normal mode based on the state of the continuous fibers in the impregnated section.

  Aspect 7 further includes detection means for detecting a loose state in which a part of the continuous fiber has been cut in the impregnating section, and the discharge mode forming means includes the normal mode when the detecting means detects the loose state. The fiber reinforced resin manufacturing apparatus according to aspect 6, wherein the discharge mode is formed from the fiber.

  In an eighth aspect, the casing constituting the continuous fiber and the impregnated portion has conductivity, and the detecting means detects the unraveled state by a change in a current flowing through the casing via the continuous fiber. It is a fiber reinforced resin manufacturing apparatus of the description.

  A ninth aspect is the fiber-reinforced resin production apparatus according to any one of the first to eighth aspects, further comprising an opening area setting means for setting an opening area of the outlet according to a target outer shape of the fiber-reinforced resin.

  Aspect 10 further includes outer diameter detecting means for detecting the outer diameter of the fiber reinforced resin formed through the outlet, and the opening area setting means is configured to detect the outer diameter based on a detection result by the outer diameter detecting means. The fiber-reinforced resin manufacturing apparatus according to aspect 9, wherein the opening area of the outlet is set.

  In an eleventh aspect, the outer diameter detecting unit detects the outer diameter of the fiber reinforced resin from physical properties measured by applying a DC voltage between the continuous fiber and the surface of the fiber reinforced resin. This is a fiber reinforced resin manufacturing device.

  Aspect 12 is the aspect 10, wherein the outer diameter detecting means detects the outer diameter of the fiber-reinforced resin from impedance measured by applying an AC voltage between the continuous fiber and the surface of the fiber-reinforced resin. This is a fiber reinforced resin manufacturing device.

  A thirteenth aspect is the fiber reinforced resin manufacturing apparatus according to the tenth aspect, wherein the outer diameter detecting means detects an outer diameter of the fiber reinforced resin from a position of a contact contacting a surface of the fiber reinforced resin.

  In a fourteenth aspect, the fiber reinforced resin production according to the tenth aspect, wherein the outer diameter detecting means detects an outer diameter of the fiber reinforced resin from a bending amount of the fiber reinforced resin when a bending force is applied to the fiber reinforced resin. Device.

  Aspect 15 includes the fiber-reinforced resin production apparatus according to any one of Aspects 1 to 14, and molding means for forming a molded article by laminating the fiber-reinforced resins molded by the fiber-reinforced resin production apparatus. Modeling device.

  In the first aspect, it is possible to prevent the continuous fiber from being pinched as compared to a case where the nozzle is divided and the outlet is widened when suppressing the clogging of the holes.

  In the mode 2, the structure can be simplified as compared with the aperture structure.

  In the aspect 3, the structure can be simplified as compared with the aperture structure.

  According to the fourth aspect, it is possible to suppress the clogging of the outlet in comparison with the case where the discharge mode cannot be formed.

  In the fifth aspect, it is possible to periodically suppress the clogging of the hole in the outlet.

  In the sixth aspect, it is possible to suppress the clogging of the outlet at an appropriate timing as compared with a case where the clogging of the outlet is periodically suppressed.

  According to the seventh aspect, it is possible to suppress the clogging of the hole of the outlet when the unraveled state occurs in which a part of the continuous fiber is cut.

  In the mode 8, it is possible to automatically form the discharge mode without visually observing the loose state.

  In the ninth aspect, it is possible to obtain a fiber-reinforced resin having a desired outer diameter.

  In the tenth aspect, it is easier to keep the outer diameter of the formed fiber-reinforced resin within an allowable range as compared with the case where the opening area of the outlet is constant.

  In the eleventh aspect, it is possible to reduce the detection error as compared with the case where the outer diameter is detected from the transmission state of light irradiated from one side of the fiber reinforced resin.

  In the twelfth aspect, it is possible to reduce the detection error even when the insulation resistance is high, as compared with the case where the outer diameter is detected from the resistance value measured by applying the DC voltage.

  In the thirteenth aspect, it is possible to reduce the detection error without depending on the resistance value, as compared with the case where the outer diameter is detected from the resistance value measured by applying the DC voltage.

  In the fourteenth aspect, it is possible to reduce the detection error without depending on the resistance value, as compared with the case where the outer diameter is detected from the resistance value measured by applying the DC voltage.

  In the fifteenth aspect, it is possible to prevent the continuous fiber from being pinched as compared with a case where the nozzle is divided and the outlet is widened when suppressing the clogging of the holes.

It is a schematic diagram which shows the shaping apparatus of 1st embodiment. It is sectional drawing of the principal part which shows the normal mode of the fiber reinforced resin manufacturing apparatus of 1st embodiment. (A) is a cross-sectional view of the fiber-reinforced resin molded in the first embodiment, (B) is a front view of a die showing a normal mode of the embodiment, and (C) is a die of an ejection mode showing the discharge mode of the embodiment. It is a front view. It is sectional drawing of the principal part which shows the discharge mode of the fiber reinforced resin manufacturing apparatus of 1st embodiment. It is sectional drawing of the principal part which shows the detection circuit of the fiber reinforced resin manufacturing apparatus of 1st embodiment. It is a flowchart which shows the melt detection processing of 1st embodiment. It is explanatory drawing which shows a mode that a fiber reinforced resin is cut | disconnected by the fiber reinforced resin manufacturing apparatus of 1st embodiment. It is sectional drawing of the principal part which shows the outer diameter detection means of the fiber reinforced resin manufacturing apparatus of 1st embodiment. It is a flowchart which shows the outer diameter shape control processing of 1st embodiment. It is explanatory drawing which shows the relationship between the outer diameter of fiber reinforced resin and the volume ratio of fiber, (A) is sectional drawing of fiber reinforced resin with small outer diameter dimension, (B) is fiber reinforced resin with large outer diameter dimension. FIG. It is explanatory drawing which shows the fiber reinforced resin manufacturing apparatus of 2nd embodiment, (A) is sectional drawing of the fiber reinforced resin shape | molded by the embodiment, (B) is the front of the dice which shows the normal mode of the embodiment. FIG. 3C is a front view of the dice showing the discharge mode of the embodiment. It is an enlarged drawing of an important section showing a fiber reinforced resin manufacturing device of a third embodiment. It is sectional drawing of the principal part which shows the normal mode of 3rd embodiment. It is sectional drawing of the principal part which shows the discharge mode of 3rd embodiment. It is a schematic diagram which shows the shaping apparatus of 4th Embodiment. It is a block diagram of a fiber reinforced resin manufacturing device of a fourth embodiment. It is sectional drawing of the principal part which shows the measurement circuit of the fiber reinforced resin manufacturing apparatus of 4th Embodiment. It is an equivalent circuit diagram showing a measuring circuit of a fiber reinforced resin manufacturing device of a fourth embodiment. It is a figure showing relation between applied voltage applied to fiber reinforced resin of a 4th embodiment, and resistance. It is sectional drawing of the principal part of the fiber reinforced resin of 4th Embodiment. It is a flowchart which shows the outer diameter shape control processing of 4th Embodiment. It is sectional drawing of the principal part which shows the measuring circuit of the fiber reinforced resin manufacturing apparatus of 5th Embodiment. It is an equivalent circuit diagram showing a measuring circuit of a fiber reinforced resin manufacturing device of a fifth embodiment. It is sectional drawing of the principal part of the fiber reinforced resin of 5th Embodiment. It is a figure showing the relation between the frequency of AC voltage applied to the fiber reinforced resin of a 5th embodiment, and impedance. It is a figure showing the relation between resin thickness and impedance in the fiber reinforced resin of a fifth embodiment. It is principal part sectional drawing which shows the fiber reinforced resin manufacturing apparatus of 6th Embodiment. It is a schematic diagram which shows the outer diameter detection means of 6th Embodiment. It is sectional drawing of the principal part of the fiber reinforced resin of 6th Embodiment. It is a figure showing relation between Vf of fiber reinforced resin of a 6th embodiment, and an outside diameter. It is principal part sectional drawing which shows the fiber reinforced resin manufacturing apparatus of 7th Embodiment. It is a schematic diagram which shows the outer diameter detection means of 7th Embodiment. It is a schematic diagram which shows the state which measures the bending amount of the fiber reinforced resin of 7th Embodiment. It is a figure showing the relation between Vf and the amount of deflection of the fiber reinforced resin of a 7th embodiment.

<First embodiment>
An example of a fiber reinforced resin manufacturing device and a molding device according to the first embodiment will be described with reference to the drawings. In the drawings, the upper part is indicated by UH and the lower part is indicated by DH.

  FIG. 1 is a diagram illustrating a modeling device 10 according to the present embodiment. The modeling device 10 is a device that models a three-dimensional modeled object based on shape data.

  The shaping apparatus 10 includes a fiber reinforced resin supply device 12 and shaping means 18 for forming a shaped object by laminating the fiber reinforced resin 14 supplied from the fiber reinforced resin supply device 12 on a holding table 16. The shaping unit 18 is configured by a nozzle that supplies the fiber reinforced resin 14 from the fiber reinforced resin supply device 12 to a target position, and the shaping unit 18 is driven by a driving mechanism (not shown). The drive mechanism determines the position of the shaping means 18 and the supply direction of the fiber reinforced resin 14 based on the shape data of the shaping object to be shaped.

  The fiber reinforced resin supply device 12 includes a continuous fiber supply unit 22 that supplies a continuous fiber 20 and a fiber reinforced resin that forms a fiber reinforced resin 14 by impregnating the continuous fiber 20 supplied from the continuous fiber supply unit 22 with the resin 24. And a manufacturing apparatus 26.

  In addition, the fiber reinforced resin supply device 12 cuts the fiber reinforced resin 14 drawn by the draw roller 28 with a pair of blades 30 and a pair of pull-out rollers 28 that pull out the fiber reinforced resin 14 from the fiber reinforced resin manufacturing device 26. And a cutting section 32. Further, the fiber reinforced resin supply device 12 includes an outer diameter detection unit 34 that detects an outer diameter that is an example of the outer diameter of the fiber reinforced resin 14 that has passed through the cutting unit 32.

  The continuous fiber supply unit 22 includes a drum 22A around which the continuous fiber 20 is wound, and a roll 22B that changes the sending direction of the continuous fiber 20 drawn from the drum 22A. The continuous fibers 20 are made of, for example, carbon fibers, and may be made of glass fibers. The single continuous fiber 20 has a diameter of 5 μm to 30 μm, and the continuous fiber 20 is pulled out from the drum 22 </ b> A in a state where several hundreds to several tens of thousands are collected.

  The fiber reinforced resin manufacturing apparatus 26 includes a resin supply unit 36 that supplies the resin 24. As the resin 24 supplied from the resin supply unit 36, a thermoplastic resin such as PP, PA, PPS, PC, PEEK, or PEI is used. Is mentioned. When PP is used as the thermoplastic resin, the resin melting temperature is about 160 ° C., and when PA is used, the resin melting temperature is about 225 ° C.

  The fiber-reinforced resin manufacturing apparatus 26 includes an impregnation section 38 for impregnating the resin 24 into the plurality of continuous fibers 20. The impregnating portion 38 includes a cylindrical casing 40, and a top surface 40A that closes an upper end of the casing 40 is formed with a nozzle portion 40B that tapers downward toward DH.

  A through hole 40C penetrating vertically is formed in the top surface 40A and the nozzle portion 40B, and an insulating film is formed on an inner peripheral surface of the through hole 40C. The plurality of continuous fibers 20 supplied from the continuous fiber supply unit 22 are inserted into the through holes 40C, and the continuous fibers 20 are inserted into the casing 40 via the through holes 40C covered with the insulating film. .

  A resin passage 40D is formed in a portion of the casing 40 located on the side of the nozzle portion 40B, and the resin 24 from the resin supply unit 36 is filled into the casing 40 via the resin passage 40D. Thereby, the plurality of continuous fibers 20 are impregnated with the resin 24 by passing the plurality of consolidated continuous fibers 20 through the inside of the casing 40 filled with the resin 24.

  A heater 40 </ b> E is provided on the outer peripheral surface of the casing 40, and the solidification of the resin 24 in the casing 40 is suppressed. The heating temperature by the heater 40E is determined according to the thermoplastic resin used.

  A lower end of the casing 40 has an outlet 42 for molding the linear fiber-reinforced resin 14 through the continuous fiber 20 impregnated with the resin 24 and a die 44 for continuously changing the opening area of the outlet 42. Is provided.

  Here, continuously changing the opening area of the outlet 42 means that the opening area is changed while maintaining the continuity of the opening edge of the outlet 42, and a state in which opposing opening edges are not in contact with each other ( Range) to reduce the opening area.

  In other words, continuously changing the opening area of the outlet 42 means that the opening area is changed while maintaining the continuity of the opening edge of the outlet 42, and the portions of the opening edge that move relatively are separated by the fiber reinforced resin 14. Means that the opening area is reduced while maintaining a state in which no is sandwiched.

  As shown in FIG. 2, the die 44 includes a first plate 46 inserted into the end opening 40 </ b> F of the casing 40, and a second plate 48 disposed outside the first plate 46. The second plate 48 is slid along the first plate 46 by the slide mechanism 49.

  As shown also in FIG. 3, the first plate 46 has a first hole 46A. The first hole 46A is formed in a drop shape, and an arc portion 46B having a smaller curvature than the other side TH protrudes toward the one side IP at an opening edge of one side IP of the first hole 46A. Is formed.

  The second plate 48 has a second hole 48A. The second hole 48A is formed in a circular shape, and an arc portion 48B having a smaller curvature than the one side IP protrudes toward the other side TH at an opening edge of the other side TH of the second hole 18A. Is formed.

  The outlet 42 is formed at a portion where the first hole 46A of the first plate 46 and the second hole 48A of the second plate 48 overlap, and relatively moves the first plate 46 and the second plate 48. The opening area of the outlet 42 is continuously varied.

  As a result, as shown in FIGS. 2 and 3B, in the normal mode 50, the center of the first hole 46A and the second hole 46A are set such that the fiber-reinforced resin 14 to be molded has the desired outer diameter dimension d. The opening area of the outlet 42 is made smaller than the maximum by offsetting the center of 48A.

  At this time, the outlet 42 is formed as a substantially circular space surrounded by the arc portion 46B of the first hole 46A and the arc portion 48B of the second hole 48A. For this reason, the fiber-reinforced resin 14 to be molded has a circular cross section as shown in FIG.

  As shown in FIGS. 3C and 4, in the discharge mode 52, the center of the first hole 46A and the center of the second hole 48A are brought close to each other to form the first hole 46A and the second hole 48A. The opening area of the outlet 42 is wider than that of the normal mode 50. Thus, the discharge mode forming means for selectively forming the normal mode 50 and the discharge mode 52 is constituted by the slide mechanism 49 that slides the second plate 48.

  Here, the hole diameter of the outlet 42 in each of the modes 50 and 52 will be described as an example. The hole diameter in the normal mode 50 is in a range of 0.1 mm to 10 mm in diameter, and 0.4 mm as an example. I do.

  On the other hand, the hole diameter in the discharge mode 52 is about 10 times the hole diameter in the normal mode 50, and is 4 mm as an example.

  As shown in FIG. 5, the fiber-reinforced resin manufacturing device 26 includes a detection unit 56 that detects the unraveled state 54 in which a part of the continuous fiber 20 has been cut in the impregnation unit 38. The discharging mode forming means forms the discharging mode 52 from the normal mode 50 when the detecting means 56 detects the release state 54.

  That is, the continuous fiber 20 is made of carbon fiber and has conductivity. Further, the casing 40 constituting the impregnated portion 38 is made of metal and has conductivity. The first plate 46 and the second plate 48 constituting the die 44 are made of an insulator such as a synthetic resin.

  The fiber-reinforced resin manufacturing device 26 includes a detection circuit 58 that detects a current flowing through the casing 40 via the continuous fiber 20. The detection circuit 58 electrically connects the negative electrode 60A of the power supply 60 to the continuous fiber 20 and electrically connects the positive electrode 60B of the power supply 60 to the casing 40 via the resistor 62 and the ammeter 64.

  The detecting means 56 is connected to the ammeter 64, and the detecting means 56 acquires the measurement result of the ammeter 64. The detecting means 56 is connected to a driving means 66, and the driving means 66 drives the slide mechanism 49 according to a signal from the detecting means 56 to slide the second plate 48.

  The detection means 56 acquires the change in the current flowing through the casing 40 via the continuous fiber 20 from the measurement result of the ammeter 64, and detects the presence or absence of the unraveled state 54 of the continuous fiber 20 in the casing 40 of the impregnated portion 38. . The detecting means 56 outputs a discharge signal to the driving means 66 when detecting the unraveling state 54, and the driving means 66 slides the second plate 48 when the discharging signal is input, and the normal mode is set. From 50, a discharge mode 52 is formed.

  Thereby, the discharge mode 52 is formed from the normal mode 50 based on the state of the continuous fibers 20 in the impregnation section 38.

  Further, a cutting unit 68 is connected to the driving unit 66, and the cutting unit 68 operates the cutting unit 32 when a predetermined time has elapsed since the driving unit 66 formed the discharge mode 52 from the normal mode 50. Then, the fiber reinforced resin 14 passing through is cut off by a pair of blades 30. This facilitates the disposal of the portion where the loosened portion 70 has occurred. When removing the loosened portion 70 from the fiber reinforced resin 14, the fiber reinforced resin 14 is cut before and after the loosened portion 70 formed on the fiber reinforced resin 14.

  FIG. 6 is a flowchart showing the operation of the fiber reinforced resin manufacturing apparatus 26, and shows the loosening detection processing.

  That is, in the detection circuit 58 of the fiber reinforced resin production device 26, the detection means 56 acquires a current value as a measurement result of the ammeter 64 (S1), and determines whether the acquired current value is equal to or less than a specified value. A judgment is made (S2).

  When the current value is equal to or less than the specified value, the current flowing through the continuous fiber 20 to the casing 40 is not detected, and it is predicted that the continuous fiber 20 in the casing 40 is not unraveled. Therefore, the normal mode 50 in which the opening area of the outlet 42 is in the molding state is maintained (S3), and the process proceeds to step S1.

  When the obtained current value exceeds the specified value in step S2, the continuous fiber 20 in the casing 40 is unraveled as shown in FIG. Expected to be. In this case, the detecting means 56 outputs a discharge signal to the driving means 66. The drive unit that has received the discharge signal drives the slide mechanism 49 to slide the second plate 48 to open the outlet (S4), and sets the normal mode 50 to the discharge mode 52.

  Thus, a discharge mode forming unit that forms the discharge mode 52 from the normal mode 50 based on the state of the continuous fibers 20 in the impregnation section 38 is realized.

  Then, when the continuous fibers 20 in the casing 40 are unraveled, the discharge mode 52 is formed from the normal mode 50. Thus, the unraveled portion 70 of the continuous fiber 20 that has been unraveled and spread is drawn out of the casing 40 from the opened outlet 42 by the draw-out roller 28.

  For this reason, compared with the case where the unraveled portion 70 that has been unraveled and spread in the casing 40 cannot pass through the outlet 42 and stays, the hole of the outlet 42 is clogged and the resin amount of the manufactured fiber-reinforced resin 14 is reduced. Also, it is possible to suppress a decrease in the amount of fibers. This stabilizes the quality of the fiber reinforced resin.

  Next, when a specified time elapses from the time when the driving unit 66 forms the discharge mode 52 from the normal mode 50 (S5), as shown in FIG. Move to. Then, the cutting means 68 operates the cutting part 32 to pinch the fiber reinforced resin 14 passing therethrough with the pair of blades 30 (S6).

  Then, the driving means 66 returns the second plate 48 to the molding position with the lapse of the above-mentioned prescribed time, narrows the opening area of the outlet 42, sets the die 44 to the normal mode 50, and resumes the molding of the fiber reinforced resin 14. I do. For this reason, the formed fiber reinforced resin 14 is set in the shaping means 18.

  As shown in FIG. 8, the outer diameter detection unit 34 that detects the outer diameter dimension d of the fiber reinforced resin 14 formed through the outlet 42 is formed in a ring shape surrounding the fiber reinforced resin 14. An example of the outer diameter detection unit 34 is a transmission type sensor that detects the outer diameter dimension d of the fiber reinforced resin 14 from the transmission state of light emitted from one side of the fiber reinforced resin 14.

  The outer diameter detector 34 is connected to the outer diameter detector 72, and the outer diameter detector 72 inputs the outer diameter d detected by the outer diameter detector 34. The outer diameter detecting means 72 receives from the outside a target outer diameter D targeted by the fiber-reinforced resin 14 to be molded, and outputs the outer diameter d input from the outer diameter detector 34 and the target outer diameter input from the outside. An open / close signal is output to the driving unit 66 based on the relationship with D. Then, the driving means 66 drives the slide mechanism 49 to slide the second plate 48 to change the opening area of the outlet 42.

  FIG. 9 is a flowchart showing the operation of the fiber reinforced resin manufacturing apparatus 26, and shows the outer diameter shape control processing.

  First, the outer diameter detecting means 72 inputs the target outer diameter D from outside (SB1), and inputs the outer diameter d of the fiber reinforced resin 14 being molded from the outer diameter detector 34 (SB2).

  Then, it is determined whether or not the target outer diameter dimension D is smaller than the outer diameter dimension d (SB3). If the target outer diameter dimension D is smaller than the outer diameter dimension d, the outer diameter detecting means 72 outputs an open signal to the driving means 66 (SB4), and proceeds to step SB2. Then, the driving means 66 that has received the opening signal drives the slide mechanism 49 to slide the second plate 48 by a specified amount, and increases the opening area of the outlet 42 by a specified amount.

  In step SB2, the outer diameter d of the fiber reinforced resin 14 being molded is input from the outer diameter detector 34, and it is determined whether or not the target outer diameter D is smaller than the outer diameter d (SB3). At this time, if the target outer diameter dimension D is equal to or larger than the outer diameter dimension d, it is determined in the next step whether or not the target outer diameter dimension D is larger than the outer diameter dimension d (SB5).

  When the target outer diameter dimension D is larger than the outer diameter dimension d, the outer diameter detecting means 72 outputs a close signal to the driving means 66 (SB6), and proceeds to step SB2. Then, the drive means 66 that has received the closing signal drives the slide mechanism 49 to slide the second plate 48 by the specified amount, and reduces the opening area of the outlet 42 by the specified amount.

  In step SB2, the outer diameter d of the fiber reinforced resin 14 being molded is input from the outer diameter detector 34, and it is determined whether or not the target outer diameter D is smaller than the outer diameter d (SB3). If the target outer diameter D is equal to or larger than the outer diameter d, it is determined in the next step whether or not the target outer diameter D is larger than the outer diameter d (SB5).

  When it is determined that the target outer diameter D is equal to or less than the outer diameter d, the outer diameter detector 72 outputs nothing to the driving unit 66 because the target outer diameter D matches the outer diameter d. Then, the process proceeds to step SB2, and steps SB2 to SB6 are repeated.

  Thus, based on the detection result by the outer diameter detecting means 72, the opening area of the outlet 42 is set, and the outlet 42 according to the outer shape of the target fiber reinforced resin 14, in this embodiment, the outer diameter dimension d. Is realized.

  Thereby, the outer diameter dimension d of the fiber reinforced resin 14 during molding is controlled to be the target outer diameter dimension D input from the outside. Further, the fiber reinforced resin 14 having an arbitrary outer diameter is molded according to the target outer diameter D input to the outer diameter detecting means 72.

  Here, the outer diameter dimension d of the fiber reinforced resin 14 formed varies depending on the opening area of the outlet 42. However, the number of continuous fibers 20 supplied from the continuous fiber supply unit 22 to the fiber reinforced resin manufacturing device 26 is constant. For this reason, the volume ratio Vf of the continuous fibers 20 contained in the fiber-reinforced resin 14 to be molded changes.

  As shown in FIG. 10, the volume ratio Vf relates to the strength of the fiber reinforced resin 14, and as the volume ratio Vf increases, the strength per unit cross-sectional area also increases. Here, the strength refers to tensile strength or bending strength.

  Therefore, the strength per unit cross-sectional area of the fiber reinforced resin 14 to be molded is changed according to the target outer diameter dimension D input to the outer diameter detecting means 72.

(Action / Effect)
The operation of the present embodiment according to the above configuration will be described.

  In the present embodiment, the opening area of the outlet 42 for molding the fiber reinforced resin 14 is continuously changed.

  For this reason, the pinching of the continuous fiber 20 is prevented as compared with the case where the nozzle is divided and the outlet is widened when suppressing hole clogging.

  Further, the outlet 42 is formed at a portion where the first hole 46A formed in the first plate 46 and the second hole 48A formed in the second plate 48 overlap, and the first plate 46, the second plate 48 Are relatively moved to change the opening area of the outlet 42.

  Therefore, the structure can be simplified as compared with a diaphragm structure such as a diaphragm blade of a camera.

  Further, a normal mode 50 for forming the fiber reinforced resin 14 and a discharge mode 52 in which the opening area of the outlet 42 is larger than that of the normal mode 50 are selectively formed.

  For this reason, compared with the case where the discharge mode 52 cannot be formed, the clogging of the hole of the outlet 42 is suppressed.

  In addition, the discharge mode 52 is formed from the normal mode 50 based on the state of the continuous fibers 20 in the impregnation section 38.

  For this reason, the clogging of the outlet 42 is suppressed at an appropriate timing as compared with the case where the clogging is periodically suppressed.

  Further, a detection unit 56 is provided for detecting the unraveled state 54 in which a part of the continuous fiber 20 has been cut in the impregnation unit 38. When the detecting unit 56 detects the unraveled state 54, the discharge mode 52 is formed from the normal mode 50.

  For this reason, when the unraveling state 54 in which a part of the continuous fiber 20 is cut occurs, the hole clogging of the outlet 42 is suppressed.

  The casing 40 that forms the continuous fiber 20 and the impregnated portion 38 has conductivity, and the detecting unit 56 detects the unraveling state 54 by a change in current flowing through the casing 40 via the continuous fiber 20.

  Therefore, the unwinding section 70 can be automatically discharged without visually detecting the unwinding state 54.

  Further, the opening area of the outlet 42 is set in accordance with the desired outer shape of the fiber reinforced resin 14.

  Thereby, it becomes possible to obtain the fiber reinforced resin 14 having the desired outer diameter.

  Further, an outer diameter detecting means 72 for detecting an outer diameter of the fiber reinforced resin 14 formed through the outlet 42 is provided, and an opening area of the outlet 42 is set based on a detection result by the outer diameter detecting means 72. You.

  This makes it easier to keep the outer diameter of the formed fiber-reinforced resin 14 within an allowable range, as compared to the case where the opening area of the outlet 42 is constant.

  The shaping apparatus 10 of the present embodiment includes the above-described fiber-reinforced resin manufacturing apparatus 26 and a shaping unit 18 that forms the shaped article by laminating the fiber-reinforced resin 14 molded by the fiber-reinforced resin manufacturing apparatus 26. ing.

  For this reason, compared with the case where the nozzle is divided and the outlet is widened, the clogging of the hole is suppressed while preventing the continuous fiber 20 from being pinched in the fiber-reinforced resin manufacturing apparatus 26.

  In this embodiment, the discharge mode 52 is formed from the normal mode 50 to the discharge mode 52 based on the state of the continuous fibers 20 in the impregnation section 38, but the present invention is not limited to this.

  For example, the discharge mode 52 may be periodically formed from the normal mode 50 at a predetermined timing, for example, at regular intervals.

  In this case, the unraveled portion 70 generated in the fiber reinforced resin 14 can be discharged at a predetermined timing. For this reason, compared with the case where the opening area of the outlet 42 is constant, clogging of the hole of the outlet 42 is suppressed.

<Second embodiment>
FIG. 11 is a diagram showing the second embodiment, and the same or equivalent parts as those of the first embodiment are denoted by the same reference numerals and the description thereof will be omitted, and only different parts will be described.

  In the present embodiment, the shape of the outlet 42 is different from that of the first embodiment, and the outlet 42 according to the present embodiment is formed in a rectangular shape.

  As shown in FIG. 11B, the first plate 46 is formed with a first square hole 46A, and the second plate 48 is formed with a second square hole 48A. The outlet 42 is formed at a portion where the first hole 46A of the first plate 46 and the second hole 48A of the second plate 48 overlap, and relatively moves the first plate 46 and the second plate 48. The opening area of the outlet 42 is continuously varied.

  As a result, as shown in FIGS. 2 and 11B, in the normal mode 50, the center of the first hole 46A and the center of the second hole 48A are set so that the fiber-reinforced resin 14 to be molded has an intended outer shape. And the opening area of the outlet 42 is reduced.

  At this time, since the outlet 42 is formed in a rectangular shape, the fiber-reinforced resin 14 to be molded has a horizontally long cross section as shown in FIG.

  As shown in FIGS. 4 and 11C, in the discharge mode 52, the center of the first hole 46A and the center of the second hole 48A are brought close to each other to form the first hole 46A and the second hole 48A. The opening area of the outlet 42 is wider than in the normal mode 50. Thus, the discharge mode forming means for selectively forming the normal mode 50 and the discharge mode 52 is constituted by the slide mechanism 49 that slides the second plate 48.

  Also in the present embodiment, it is possible to obtain the same operation and effect as in the first embodiment.

  The fiber reinforced resin 14 molded at the outlet 42 has a horizontally long cross section. For this reason, lamination of the fiber reinforced resin 14 on the holding table 16 by the modeling means 18 becomes easy.

<Third embodiment>
FIGS. 12 to 14 are views showing the third embodiment, and the same or equivalent parts as those of the first embodiment are denoted by the same reference numerals and the description thereof will be omitted, and only different parts will be described.

  In the present embodiment, the configuration for forming the outlet 42 is different from that of the first embodiment, and the outlet 42 according to the present embodiment has a rectangular shape formed on the end face 40 </ b> G of the casing 40 of the impregnating portion 38. An opening 74 and an eccentric cam 76 for changing the opening area of the opening 74 are formed.

  The eccentric cam 76 includes a disk 76A formed to have a thickness substantially equal to the width of the opening 74. The disk 76A allows the rotation shaft 76B provided at the eccentric position to be rotatable on the end face 40G. It is supported and rotated by a drive source (not shown).

  That is, the die 44 rotates in the direction in which the end face 40G, which is an example of a side wall having the opening 74 serving as the outlet 42, enters and exits the impregnated portion 38 from the opening 74, and changes the opening area of the outlet 42. And an eccentric cam 76 which is an example of a cam to be driven.

  As a result, as shown in FIG. 13, in the normal mode 50, the disk 76A narrows the opening area of the opening 74 so that the fiber-reinforced resin 14 to be molded has an intended outer shape.

  As shown in FIG. 14, in the discharge mode 52, the disk 76 </ b> A increases the opening area of the opening 74, and increases the opening area of the outlet 42 than in the normal mode 50.

  Thus, the discharge mode forming means for selectively forming the normal mode 50 and the discharge mode 52 is constituted by a drive source for rotating the disk 76A.

  In the present embodiment, as in the first embodiment, the opening area of the outlet 42 for molding the fiber reinforced resin 14 is continuously changed.

  For this reason, compared with the case where the nozzle is divided and the outlet is widened, the clogging of the holes is suppressed while preventing the continuous fiber 20 from being pinched.

  Then, by rotating the eccentric cam 76, the opening area of the outlet 42 is continuously varied.

<Fourth embodiment>
FIGS. 15 to 21 are views showing the fourth embodiment, and the same or equivalent parts as those in the first embodiment are denoted by the same reference numerals and the description thereof will be omitted, and only different parts will be described.

  In the present embodiment, as shown in FIG. 15, the outer diameter dimension d of the fiber reinforced resin 14 drawn out from the outlet 42 of the die 44 of the fiber reinforced resin manufacturing device 26 is detected as compared with the first embodiment. Is different from the first embodiment in that the measuring means 100 is provided for detecting the outer diameter. In the first embodiment, the opening area of the outlet 42 is set by directly using the outer diameter dimension d of the fiber reinforced resin 14 measured by the outer diameter detection unit 34. However, in the present embodiment, the opening area of the outlet 42 is set using the volume ratio Vf of the continuous fiber 20 that changes according to the outer diameter d of the fiber-reinforced resin 14 to be molded.

  As shown in FIG. 16, the measuring means 100 detects the outer diameter dimension d of the fiber reinforced resin 14 from the physical properties measured by applying a DC voltage between the continuous fiber 20 and the surface 14A of the fiber reinforced resin 14. An example of a physical property measured by applying a DC voltage is a resistance value obtained from a current value when a DC voltage is applied. In the present embodiment, a case where this resistance value is used as a physical property will be described.

  The fiber reinforced resin manufacturing apparatus 26 includes a measuring unit 100 for measuring the formed fiber reinforced resin 14 and a control unit 102 to which a measurement result of the measuring unit 100 is sent. Further, the fiber reinforced resin manufacturing apparatus 26 includes a driving unit 66 that receives an instruction from the control unit 102, and a slide mechanism 49 that is operated by a signal from the driving unit 66. The slide mechanism 49 changes the opening area of the outlet 42 by sliding the second plate 48.

  As shown in FIG. 17, the measuring means 100 applies the DC voltage between the continuous fiber 20 and the surface 14A of the fiber-reinforced resin 14 using the measurement circuit 110 to measure the resistance R of the fiber-reinforced resin 14 from the resistance value R. The outer diameter d is detected.

  The measurement circuit 110 includes a first contact 112 that contacts the continuous fiber 20 and a second contact 114 that contacts the surface 14A of the fiber reinforced resin 14. Further, the measurement circuit 110 includes a DC power supply 118 that applies a DC voltage between the contacts 112 and 114 via a current measurement unit 116.

  The continuous fibers 20 are conductive carbon fibers. In the measurement circuit 110, as shown in FIG. 18, the resin 14B between the continuous fiber 20 and the surface 14A of the fiber reinforced resin 14 is equivalent to the resistance 120, and the continuous fiber 20 and the surface 14A of the fiber reinforced resin 14 The resistance value R between them is measured.

As shown in FIG. 19, the resistance value R tends to decrease as the applied voltage increases. By utilizing this, by adjusting the range of the DC voltage of less 1KV or 100V from a DC power source 118, measuring the resistance of the resin 14B is a high-resistance (hereinafter volume resistivity 10 ⁶ or more ^{10 11 Ω} · cm) It is possible. As an example, when a semiconductive resin of carbon-containing urethane is used as the resin 14B, a resistance value R of 5 MΩ can be obtained by setting the DC voltage to 200V.

  The resistance value R is obtained by measuring the current flowing between the contacts 112 and 114 with the current measuring unit 116. As shown in FIG. 20, the distance from the continuous fiber 20 to the surface 14A of the fiber reinforced resin 14 is “L”, the resistivity of the resin 14B is “ρ”, and the second contact 114 and the surface 14A of the fiber reinforced resin 14 are Is the contact area of “A”, the resistance value R is obtained by the formula of R = ρ × (L / A).

  From this equation, it is understood that the resistance value R increases as the distance L from the continuous fiber 20 to the surface 14A of the fiber reinforced resin 14 increases. Using this, the volume ratio Vf is determined.

  That is, as the resistance value R increases, the distance L from the continuous fiber 20 to the surface 14A of the fiber reinforced resin 14 increases. The number of continuous fibers 20 is constant, and the diameter of continuous fibers 20 is also constant. Therefore, as the distance L increases, the volume ratio Vf of the continuous fibers 20 included in the fiber reinforced resin 14 decreases. By utilizing this, it is possible to measure the volume ratio Vf from the resistance value R.

  FIG. 21 is a flowchart showing the operation of the fiber-reinforced resin manufacturing apparatus 26 of the present embodiment, and shows the outer diameter shape control processing executed by the microcomputer constituting the control means 102.

  First, the control means 102 inputs the target volume ratio Vf from an input means such as a keyboard (SC1). The target outer diameter d of the fiber reinforced resin 14 is determined by the volume ratio Vf.

  Then, the resistance value R between the continuous fiber 20 and the surface 14A of the fiber reinforced resin 14 is measured by the measuring circuit 110 (SC2), and Vf indicating the relationship between the previously prepared resistance value R and the volume ratio Vf is measured. The volume ratio Vf is determined from the resistance value R with reference to the calculation table (SC3).

  Next, it is determined whether or not the calculated volume ratio Vf matches the target volume ratio Vf (SC4). If they match, the determination in step SC4 is repeated.

  If it is determined that the volume ratio Vf calculated in step SC4 does not match the target volume ratio Vf, it is determined whether the target volume ratio Vf is larger than the calculated volume ratio Vf (SC5).

  If it is determined in step SC5 that the target volume ratio Vf is larger than the calculated volume ratio Vf, the volume ratio Vf of the molded fiber reinforced resin 14 is smaller than the target volume ratio Vf, and the outer diameter d of the fiber reinforced resin 14 is smaller. Greater than target value. For this reason, the outlet 42 is made small, and the fiber-reinforced resin 14 to be molded is made thin (SC6).

  On the other hand, if it is determined in step SC5 that the target volume ratio Vf is smaller than the calculated volume ratio Vf, the volume ratio Vf of the molded fiber reinforced resin 14 is larger than the target volume ratio Vf, and the outer diameter of the fiber reinforced resin 14 d is smaller than the target value. For this reason, the outlet 42 is enlarged, and the fiber-reinforced resin 14 to be molded is made thicker (SC7).

(Action / Effect)
Also in the present embodiment according to the above configuration, it is possible to obtain the same operation and effect as the first embodiment.

  In the present embodiment, the outer diameter d of the fiber reinforced resin 14 is detected from physical properties measured by applying a DC voltage between the continuous fiber 20 and the surface 14A of the fiber reinforced resin 14. For this reason, it is possible to reduce the detection error as compared with the case where the outer diameter is detected from the transmission state of the light irradiated from one side of the fiber reinforced resin 14.

<Fifth embodiment>
FIGS. 22 to 26 are views showing the fifth embodiment, and the same or equivalent parts as those of the first embodiment and the fourth embodiment are denoted by the same reference numerals and description thereof will be omitted, and only different parts will be described. explain.

  In the present embodiment, as shown in FIG. 22, the measuring circuit 150 constituting the measuring means 100 is different from that of the fourth embodiment, and the measuring circuit 150 is used to reduce the outer diameter d of the fiber reinforced resin 14. The volume ratio Vf of the continuous fiber 20 that changes accordingly is calculated. The point that the opening area of the outlet 42 is set using the volume ratio Vf of the continuous fibers 20 is the same as in the fourth embodiment.

  The measurement circuit 150 detects the outer diameter d of the fiber reinforced resin 14 from the impedance Z measured by applying an AC voltage between the continuous fiber 20 and the surface 14A of the fiber reinforced resin 14.

  The measurement circuit 150 includes a first contact 112 in contact with the continuous fiber 20 and a second contact 114 in contact with the surface 14A of the fiber-reinforced resin 14. The measuring circuit 150 includes an AC power supply 152 that applies an AC voltage between the contacts 112 and 114 via the current measuring unit 116, and a voltage measuring unit 154 that measures the voltage between the contacts 112 and 114. Have.

  The continuous fibers 20 are conductive carbon fibers. As shown in FIG. 23, the measurement circuit 150 equalizes the resin 14B between the continuous fiber 20 and the surface 14A of the fiber-reinforced resin 14 as a parallel connection circuit of a resistor 156 and a capacitor 158, and The impedance Z between the reinforced resin 14 and the surface 14A is measured.

  When a voltage is applied between the contacts 112 and 114, charges are stored in the resin 14 </ b> B between the continuous fiber 20 and the surface 14 </ b> A of the fiber-reinforced resin 14. Here, as shown in FIG. 24, the dielectric constant of the resin 14B is “ε”, the contact area between the second contactor 114 and the surface 14A of the fiber reinforced resin 14 is “S”, Assuming that the thickness of the resin up to the surface 14A is “T”, the capacitance C can be obtained by the formula of C = (ε × S) / T.

  From this equation, when the amount of the fiber reinforced resin 14 increases, the outer diameter d increases, and the resin thickness T increases. As a result, the capacitance C decreases. As the capacitance C decreases, the impedance Z increases. From this characteristic, the volume ratio Vf is obtained by measuring the impedance Z.

  That is, as shown in FIG. 25, as the frequency of the applied AC voltage increases, the impedance Z decreases. Further, as shown in FIGS. 23 and 26, when the resin thickness T of the resin 14B between the continuous fiber 20 and the surface 14A of the fiber reinforced resin 14 increases, the impedance Z increases.

  In the present embodiment, the AC voltage applied to the continuous fiber 20 is 1 V or more and 5 V or less, and the frequency of the AC voltage is 50 Hz or more and 1 GHz or less. As an example, when the resin 14B is polypropylene, when an AC voltage having a frequency of 1 Mz is applied, an impedance Z of 1 KΩ is obtained.

(Action / Effect)
Also in the present embodiment according to the above configuration, it is possible to obtain the same operation and effect as in the first embodiment.

  In the present embodiment, the impedance Z for detecting the outer diameter d of the fiber reinforced resin 14 is determined from the impedance Z measured by applying an AC voltage between the continuous fiber 20 and the surface 14A of the fiber reinforced resin 14. It is possible to obtain. For this reason, it is possible to reduce the detection error even when the insulation resistance is high, as compared with the case where the outer diameter is detected from the resistance value measured by applying the DC voltage.

<Sixth embodiment>
FIGS. 27 to 30 are views showing the sixth embodiment, and the same or equivalent parts as those in the first embodiment are denoted by the same reference numerals and description thereof will be omitted, and only different parts will be described.

  In the present embodiment, as shown in FIG. 27, the outer diameter detecting means 200 for detecting the outer diameter d of the fiber reinforced resin 14 is different from the first embodiment. Further, the volume ratio Vf of the continuous fiber 20 is calculated using the outer diameter dimension d of the fiber reinforced resin 14 detected by the outer diameter detection means 200, and the opening area of the outlet 42 is set using the volume ratio Vf. Is the same as in the fourth embodiment.

  As shown in FIG. 28, the outer diameter detection means 200 has a base end rotatably supported by a support roller 206 provided on a housing 202 via a bracket 204 and a bracket 210 provided on the housing 202. And a movable arm 212. Further, the outer diameter detecting means 200 includes an outer diameter measuring roller 214 which constitutes a contact provided at the tip of the movable arm 212.

  The outer diameter detecting means 200 includes a coil spring 216 that pushes the movable arm 212 in a direction in which the outer diameter measuring roller 214 approaches the support roller 206. The outer diameter detecting means 200 includes, for example, a distance sensor (not shown) that measures the distance between the outer diameter measuring roller 214 and the support roller 206 from the angle of the movable arm 212.

  As shown in FIGS. 28 and 29, the molded fiber-reinforced resin 14 is sandwiched between the outer diameter measurement roller 214 and the support roller 206. In this state, the distance sensor measures the distance between the outer diameter measuring roller 214 and the support roller 206, so that the outer diameter d of the fiber reinforced resin 14 can be measured. Thus, the outer diameter d of the fiber reinforced resin 14 is detected from the position of the outer diameter measurement roller 214, which is a contact contacting the surface 14A of the fiber reinforced resin 14.

  FIG. 30 is a diagram showing the relationship between the volume ratio Vf of the continuous fiber 20 and the outer diameter d of the fiber reinforced resin 14. By using this relationship, the volume ratio Vf can be calculated from the outer diameter d. It is possible. In the fiber reinforced resin 14 used in this figure, 3000 carbon fibers are used as the continuous fiber 20, and a thermoplastic resin (polyamide) is used as the resin 14 B between the continuous fiber 20 and the surface 14 A of the fiber reinforced resin 14. Have been.

(Action / Effect)
Also in the present embodiment according to the above configuration, it is possible to obtain the same operation and effect as in the first embodiment.

  Further, in the present embodiment, it is possible to reduce the detection error without depending on the resistance value, as compared with the case where the outer diameter dimension d is detected from the resistance value measured by applying a DC voltage.

<Seventh embodiment>
FIGS. 31 to 34 are views showing the seventh embodiment, and the same or equivalent parts as those in the first embodiment or the sixth embodiment are denoted by the same reference numerals and description thereof will be omitted, and only different parts will be described. explain.

  In the present embodiment, as shown in FIG. 31, the outer diameter detecting means 250 for detecting the outer diameter d of the fiber reinforced resin 14 is different from the sixth embodiment. Further, the volume ratio Vf of the continuous fiber 20 is calculated using the outer diameter dimension d of the fiber reinforced resin 14 detected by the outer diameter detection means 250, and the opening area of the outlet 42 is set using the volume ratio Vf. Is the same as in the fourth embodiment.

  As shown in FIG. 32, the outer diameter detecting means 250 includes a pair of support rollers 206 provided on the housing 202 via the bracket 204 and a bracket 210 provided on the housing 202 such that the base ends thereof are rotatable. And a movable arm 212 that is supported. Further, the outer diameter detecting means 250 includes a push roller 252 provided at the tip of the movable arm 212.

  The outer diameter detecting means 250 includes a coil spring 216 that pushes the movable arm 212 in a direction in which the push roller 252 is disposed between the support rollers 206. As shown in FIGS. 32 and 33, the formed fiber reinforced resin 14 is disposed on both support rollers 206, 206. The fiber reinforced resin 14 is pressed downward by a push roller 252 pressed by a coil spring 216 at a portion between the two support rollers 206. As a result, a bending force F is applied to the fiber reinforced resin 14 by the push roller 252.

  Further, the outer diameter detecting means 250 sets the distance from the angle of the movable arm 212 to the virtual line K connecting the lower peripheral surface of the push roller 252 to the upper peripheral surface of both support rollers 206, 206 as the amount of deflection TW, for example. And a deflection sensor (not shown) for measuring.

  Here, when the volume ratio Vf of the continuous fiber 20 changes, the diameter of the continuous fiber 20 does not change, so that the thickness of the resin 14B between the continuous fiber 20 and the surface 14A of the fiber-reinforced resin 14 changes.

Further, the Young's modulus differs between the portion of the resin 14B including the continuous fiber 20 and the portion of the resin 14B alone. Taking the case where the resin 14B of the fiber reinforced resin 14 is made of thermoplastic resin polyamide as an example, the Young's modulus of the portion of the resin 14B including the continuous fiber 20 is 15000 N / cm ² , and that of the portion of only the resin 14B. The Young's modulus is 1500 N / cm ² .

  When the distance X between the centers of rotation of the support rollers 206 and 20 is 20 mm, and the bending force F applied to the fiber reinforced resin 14 by the push roller 252 is 0.5 N, the bending amount TW and the volume of the continuous fiber 20 are set. The relationship with the ratio Vf is as shown in FIG.

  Therefore, by using the relationship between the amount of bending TW and the volume ratio Vf of the continuous fiber 20, the volume ratio Vf can be obtained from the amount of bending TW obtained by the bending sensor.

(Action / Effect)
Also in the present embodiment according to the above configuration, it is possible to obtain the same operation and effect as in the first embodiment.

  Further, as compared with the case where the outer diameter is detected from the resistance value measured by applying the DC voltage, the detection error can be reduced without depending on the resistance value.

DESCRIPTION OF SYMBOLS 10 Modeling apparatus 14 Fiber reinforced resin 18 Modeling means 18A Second hole 20 Continuous fiber 24 Resin 26 Fiber reinforced resin manufacturing apparatus 34 Outer diameter detecting section 38 Impregnating section 40 Casing 42 Outlet 44 Dice 46 First plate 46A First hole 48 Two plates 48A Second hole 49 Slide mechanism (discharge mode forming means)
50 Normal mode 52 Discharge mode 54 Unraveling state 56 Detecting means 66 Driving means 72 Outer diameter detecting means 76 Eccentric cam 214 Outer diameter measuring roller 252 Push roller D Target outer diameter dimension d Outer diameter dimension F Bending force R Resistance value Z impedance

Claims (15)

An impregnating section for impregnating the resin with a plurality of continuous fibers,
A die having an outlet for forming a linear fiber-reinforced resin through the continuous fiber impregnated with the resin and having a continuously changeable opening area of the outlet; and
A fiber reinforced resin manufacturing device equipped with   The outlet is formed in a portion where the first hole formed in the first plate and the second hole formed in the second plate overlap, and relatively moves the first plate and the second plate. The apparatus for producing a fiber-reinforced resin according to claim 1, wherein the opening area of the outlet is changed.   2. The fiber-reinforced resin according to claim 1, wherein the die has a side wall having an opening serving as the outlet, and a cam that enters and exits the impregnated portion through the opening to change an opening area of the outlet. 3. manufacturing device.   4. The discharge mode forming unit according to claim 1, further comprising a discharge mode forming unit configured to selectively form a normal mode for forming the fiber reinforced resin and a discharge mode in which the opening area of the outlet is larger than the normal mode. 5. The fiber reinforced resin production apparatus according to any one of the above.   The apparatus according to claim 4, wherein the discharge mode forming means forms the discharge mode from the normal mode at a predetermined timing.   The fiber reinforced resin manufacturing apparatus according to claim 4, wherein the discharge mode forming means forms the discharge mode from the normal mode based on a state of the continuous fibers in the impregnation section. The impregnating unit further includes a detecting unit that detects a loose state in which a part of the continuous fiber is cut,
7. The fiber reinforced resin manufacturing apparatus according to claim 6, wherein the discharge mode forming means forms the discharge mode from the normal mode when the detecting means detects the loose state. The casing constituting the continuous fiber and the impregnated portion has conductivity,
The fiber reinforced resin manufacturing apparatus according to claim 7, wherein the detecting means detects the loose state by a change in a current flowing through the casing through the continuous fiber.   The fiber reinforced resin manufacturing apparatus according to any one of claims 1 to 8, further comprising an opening area setting means for setting an opening area of the outlet according to a target outer shape of the fiber reinforced resin. Further comprising an outer diameter detecting means for detecting the outer diameter of the fiber reinforced resin formed through the outlet,
The fiber reinforced resin manufacturing apparatus according to claim 9, wherein the opening area setting means sets an opening area of the outlet based on a detection result by the outer diameter detecting means.   The fiber reinforced resin according to claim 10, wherein the outer diameter detecting means detects the outer diameter of the fiber reinforced resin from physical properties measured by applying a DC voltage between the continuous fiber and the surface of the fiber reinforced resin. manufacturing device.   The fiber reinforced resin according to claim 10, wherein the outer diameter detecting means detects the outer diameter of the fiber reinforced resin from impedance measured by applying an AC voltage between the continuous fiber and the surface of the fiber reinforced resin. manufacturing device.   The fiber reinforced resin manufacturing apparatus according to claim 10, wherein the outer diameter detection means detects an outer diameter of the fiber reinforced resin from a position of a contact that contacts a surface of the fiber reinforced resin.   The fiber reinforced resin manufacturing apparatus according to claim 10, wherein the outer diameter detecting means detects an outer diameter of the fiber reinforced resin from a bending amount of the fiber reinforced resin when a bending force is applied to the fiber reinforced resin. An apparatus for producing a fiber-reinforced resin according to any one of claims 1 to 14,
Modeling means for forming a molded article by laminating the fiber reinforced resin molded by the fiber reinforced resin manufacturing apparatus,
Modeling device equipped with