JPH06320629A - Molding method for liquid crystal resin composite material and device therefor - Google Patents

Abstract

PURPOSE:To prevent a strand from breaking then it is wound on a mandrel and effectively prevent a possibility that the break of the strand may cause a failure of a smooth filament winding in a filament winding using a strand of a liquid crystal resin composite material. CONSTITUTION:A plurality of extrusion holes 12 are formed on a nozzle head 12 of an extruder 2 extruding a liquid crystal resin composite material in a strand form. The two or more strands Sm simutaneously extruded from the extrusion holes are collected while being drawn. A collected strand S obtained by collecting the two or more strands Sm is heated to a temperature ranging from a minimum moldable temperature of the matrix resin thereof to below the liquid crystal transition tempature of the liquid crystal resin and wound on a mandrel 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for molding a liquid crystal resin composite, and more particularly, a so-called filament winding method and apparatus using a strand-shaped molding material made of a liquid crystal resin composite. Regarding

[0002]

2. Description of the Related Art Conventionally, as a molding method for molding using a fiber reinforced resin material, a strand-shaped molding material in which a fiber reinforced material is impregnated with a resin is regularly formed on the outer peripheral side of a rotating mandrel. After forming a molded body with a predetermined thickness by winding it around, the resin impregnated in the strand is cured and the mandrel is removed to obtain a hollow cylindrical molded product, a so-called filament winding method. Is generally well known. According to this filament winding method, it is possible to obtain a hollow-cylindrical fiber-reinforced resin molded product having a high specific strength (strength / density) and excellent mechanical properties. Further, such a resin molded product has high efficiency. It enables mass production.

By the way, in recent years, it has been proposed to use a thermoplastic liquid crystal resin as a reinforcing fiber of a fiber-reinforced resin material. For example, Japanese Patent Application Laid-Open No. 62-116666 discloses a liquid crystal resin composite in which a thermoplastic liquid crystal resin is used as a reinforcing fiber and is formed into a fibrous shape.
When a thermoplastic liquid crystal resin is used as the reinforcing fiber in this way, when the used and discarded resin molded product is recycled, the thermoplastic liquid crystal resin fiber as the reinforcing fiber is cut along with the crushing of the resin molded product. However, by heating the liquid crystal resin to a temperature higher than the liquid crystal transition temperature to prepare the material, it is possible to easily reproduce the fibrous state of the liquid crystal resin as a reinforcing material, which has been conventionally reinforced with glass fiber or carbon fiber. It is possible to achieve a great improvement in recyclability, which can be regenerated into a material having the same physical properties, which was generally difficult with a resin molded product.

[0004]

By the way, as is well known, in the above-mentioned filament winding method, a strand-shaped molding material is wound around a mandrel to mold a cylindrical molded product. When performing filament winding using a strand made of a liquid crystal resin composite with a thermoplastic liquid crystal resin as a reinforcing fiber,
By using reinforced fiber as a thermoplastic liquid crystal resin,
For example, when it is difficult to perform smooth filament winding stably as compared with the case of using strands made of other fiber materials such as glass fiber or carbon fiber, the strands are easily broken during winding around the mandrel. There is.

That is, when the reinforcing fibers of the thermoplastic liquid crystal resin are molded by a so-called in-situ molding method in which the thermoplastic liquid crystal resin is extruded into the thermoplastic matrix resin so as to be fibrous, the liquid crystal resin is molded. In order to maintain the fibrous state of and obtain a certain mechanical property or more, it is necessary to apply a shearing rate of a predetermined value or more and to draw at a draw ratio of a predetermined value or more when extruding a strand. In comparison with other fiber reinforced materials such as glass fiber and carbon fiber, it is difficult to obtain a fiber having a large wire diameter in a fiberized state having predetermined physical properties. Therefore, generally, it is not possible to obtain a fiber having a very high tensile strength for each fiber, and it is relatively easy to break or break. Further, in order to weld the strands made of the liquid crystal resin composite to each other, the strands are at a temperature equal to or higher than the minimum moldable temperature of the matrix resin,
And, it is necessary to heat the matrix resin by heating within a temperature range (so-called mold window) below the liquid crystal transition temperature of the liquid crystal resin, but the liquid crystal fiber is heated to the melting temperature of the matrix resin. However, the tensile strength is lowered, and the strand is likely to be broken.

By the way, when the thermoplastic liquid crystal resin is molded by the synthetic fiber spinning molding method, the liquid crystal fiber is formed by the in-situ molding in which the liquid crystal resin is fiberized in the matrix resin by coextrusion molding with the matrix resin. In comparison, you can obtain liquid crystal fibers with a considerably larger diameter,
Even if shearing acts during molding, it is less likely to be damaged, and has physical properties such as relatively high tensile strength even during hot working.
It can be used as a reinforcing fiber of liquid crystal resin having a significantly improved reinforcing effect.

The present invention has been made in view of the above problems, and when performing filament winding using a strand of a liquid crystal resin composite, prevents breakage of the strand during winding on a mandrel, and An object of the present invention is to provide a method for molding a liquid crystal resin composite and an apparatus therefor capable of effectively preventing smooth filament winding from being hindered by breakage of the liquid crystal.

[0008]

Therefore, in the method of molding a liquid crystal resin composite according to the first invention of the present application, a liquid crystal transition temperature higher than the minimum moldable temperature of the matrix resin is contained in the thermoplastic matrix resin. A method for molding a liquid crystal resin composite in which a thermoplastic liquid crystal resin having a strand which is present in a fibrous state is molded by a filament winding method, and a plurality of strands are simultaneously supplied from a strand supply means for supplying the strand. It is characterized in that after being supplied and the plurality of strands are bundled, the strands in the bundled state are wound around a mandrel.

As the thermoplastic matrix resin used in the present invention, thermoplastic resins used for various purposes can be used, and a typical example is ABS (acrylonitrile-butadiene-styrene copolymer) resin. , Polystyrene (PS) resin, polycarbonate (PC)
Resin, polyphenylene oxide (PPO) resin, polyolefin (PO) resin, polyester resin, polyarylate (PAR) resin, polyamide (PA) resin and mixtures thereof can be mentioned, and specifically, PC / ABS resin (minimum Moldable temperature 220 ° C), PC / PBT (polybutylene terephthalate) resin (minimum moldable temperature 230
℃), m-PPE (modified polyphenylene ether) resin (minimum moldable temperature 220 ℃ or 260 ℃), PA6 resin
(Minimum moldable temperature 215 ° C), PBT resin (Minimum moldable temperature 230 ° C), PC resin (Minimum moldable temperature 270)
℃), ABS resin (minimum moldable temperature 180 ℃), PP (polypropylene) resin (minimum moldable temperature 176 ℃), PS
Various commercially available resins (minimum moldable temperature 170 ° C. or 190 ° C.) can be used.

On the other hand, the liquid crystal resin can be defined as a resin exhibiting liquid crystallinity in a molten state, and the resin used here is 20 from the minimum moldable temperature of the above matrix resin.
Those having a liquid crystal transition temperature higher than ℃ are preferable, and trade name Vectra A950 (shown in Chemical formula 1) (liquid crystal transition temperature 2
80 ° C: Polyplastics Co., Ltd., Econol 6000
(Liquid crystal transition temperature 350 ° C .: manufactured by Sumitomo Chemical Co., Ltd.), Zaider (manufactured by Nippon Petrochemical Co., Ltd.), and other commercially available thermoplastic liquid crystal polyesters and thermoplastic liquid crystal polyester amides can be used.

[0011]

[Chemical 1]

The second invention of the present application is the method for molding a liquid crystal resin composite according to the first invention, wherein the strands in the focused state are at a temperature equal to or higher than the minimum moldable temperature of the matrix resin, and It is characterized in that it is wound around the mandrel while being heated within a temperature range below the liquid crystal transition temperature of the liquid crystal resin.

Further, in the method for molding a liquid crystal resin composite according to the third invention of the present application, a thermoplastic liquid crystal resin having a liquid crystal transition temperature higher than the minimum moldable temperature of the matrix resin is a fiber in the thermoplastic matrix resin. A method of molding a liquid crystal resin composite, which comprises molding by a filament winding method using a strand existing in a state, wherein the mandrel is heated in a state in which the strand is heated to a predetermined temperature lower than the minimum moldable temperature of the matrix resin. And then the strands wound around the mandrel are heated to a temperature above the minimum moldable temperature of the matrix resin and below the liquid crystal transition temperature of the liquid crystal resin to fuse the strands together. It is characterized by.

Further, in the method for molding a liquid crystal resin composite according to the fourth invention of the present application, a thermoplastic liquid crystal resin having a liquid crystal transition temperature higher than the minimum moldable temperature of the matrix resin in the thermoplastic matrix resin. Is a molding method of a liquid crystal resin composite which is formed by a filament winding method using a strand formed in a fiber state, at a temperature equal to or higher than the minimum moldable temperature of the matrix resin,
Further, a winding auxiliary member having a higher tensile strength than the strand in a state of being heated within a temperature range lower than the liquid crystal transition temperature of the liquid crystal resin is arranged so as to be located outside the strand when wound around the mandrel. Then, the strand is wound around the mandrel in a state of being superposed with the winding assist member.

Further, the fifth invention of the present application is a strand in which a thermoplastic liquid crystal resin having a liquid crystal transition temperature higher than the minimum moldable temperature of the matrix resin is present in a fiber state in the thermoplastic matrix resin. A method for molding a liquid crystal resin composite, which comprises molding by a filament winding method using, wherein the strands are in a temperature range not lower than the minimum moldable temperature of the matrix resin and lower than the liquid crystal transition temperature of the liquid crystal resin. It is characterized in that it is wound around a mandrel together with a thermoplastic liquid crystal resin fiber formed by spin molding, which has a higher tensile strength than the strand in the state of being heated.

Further, a sixth invention of the present application is the method for molding a liquid crystal resin composite according to the fifth invention, wherein the thermoplastic liquid crystal resin fiber formed by the spin molding is wound around a mandrel together with the strand. It is characterized by constituting a part of the molded product after being molded.

Further, in the method for molding a liquid crystal resin composite body according to the seventh aspect of the present invention, a roving made of a thermoplastic liquid crystal resin fiber formed by spin molding is impregnated with a thermoplastic matrix resin to form a strand. Characterized in that the strand is wound around the mandrel while being heated at a temperature equal to or higher than the minimum moldable temperature of the matrix resin and within a temperature range lower than the liquid crystal transition temperature of the liquid crystal resin to perform filament winding. Is.

In the liquid crystal resin composite molding apparatus according to the eighth aspect of the present invention, a thermoplastic liquid crystal resin having a liquid crystal transition temperature higher than the minimum moldable temperature of the matrix resin is a fiber in the thermoplastic matrix resin. A strand supplying means for supplying a strand existing in a state, a mandrel around which the strand supplied from the supplying means is wound around the outer circumference, and a tension adjusting means for adjusting the tension of the strand at the time of winding around the mandrel. In the apparatus for molding a liquid crystal resin composite, the strand supply means is provided with an extruder for extruding the strand, and the extrusion head of the extruder has a plurality of extrusion holes formed therein. On the downstream side of the extruder, there is provided a focusing means for focusing the strands extruded simultaneously from the plurality of extrusion holes. Together are a plurality of strands in a state of being focused by the focusing means is that characterized in that it is wound around the mandrel.

Further, a ninth invention of the present application is the liquid crystal resin composite molding apparatus according to the eighth invention, wherein the molding apparatus comprises the strands having a temperature not lower than a minimum molding temperature of the matrix resin. And, a heating means for heating within a temperature range lower than the liquid crystal transition temperature of the liquid crystal resin is provided, and the plurality of strands in a state of being focused by the focusing means are heated within the temperature range by the heating means. It is characterized in that it is wound around the mandrel in this state.

In the liquid crystal resin composite molding apparatus according to the tenth invention of the present application, a thermoplastic liquid crystal resin having a liquid crystal transition temperature higher than the minimum moldable temperature of the matrix resin is a fiber in the thermoplastic matrix resin. A strand supplying means for supplying a strand existing in a state, a mandrel around which the strand supplied from the supplying means is wound around the outer circumference, and a tension adjusting means for adjusting the tension of the strand at the time of winding around the mandrel. In a liquid crystal resin composite molding device provided with the molding device,
First heating means for heating the strand to a predetermined temperature lower than the minimum moldable temperature of the matrix resin, and the strand above the minimum moldable temperature of the matrix resin and below the liquid crystal transition temperature of the liquid crystal resin. Second heating means for heating within the temperature range of, the strand supplied from the supply means is wound around the mandrel in a state of being heated to the predetermined temperature by the first heating means, and thereafter, It is characterized in that the second heating means heats the strands to each other by heating them in the above temperature range.

Furthermore, the liquid crystal resin composite molding apparatus according to the eleventh invention of the present application is a thermoplastic liquid crystal resin having a liquid crystal transition temperature higher than the minimum moldable temperature of the matrix resin in the thermoplastic matrix resin. Strand supply means for supplying a strand in the form of a fiber, a mandrel around which the strand supplied from the supply means is wound around, and a tension adjusting means for adjusting the tension of the strand during winding around the mandrel. In a molding apparatus for a liquid crystal resin composite, the molding apparatus comprises a strand in a state of being heated to a temperature above the minimum moldable temperature of the matrix resin and below the liquid crystal transition temperature of the liquid crystal resin. And a winding assist member having a higher tensile strength than the In a state of being superimposed so as to be positioned on the outside of the strand during winding into barrels, in which characterized in that the strand is wound around the mandrel.

Furthermore, the twelfth invention of the present application is a strand in which a thermoplastic liquid crystal resin having a liquid crystal transition temperature higher than the minimum moldable temperature of the matrix resin is present in a fiber state in the thermoplastic matrix resin. A liquid crystal resin composite comprising: a strand supply means for supplying the strand, a mandrel around which the strand supplied from the strand supply means is wound around the outer peripheral side, and a tension adjusting means for adjusting the tension of the strand during winding around the mandrel. In the above molding apparatus, the molding apparatus has a higher tensile strength than the strand in a state of being heated at a temperature equal to or higher than the minimum moldable temperature of the matrix resin and lower than the liquid crystal transition temperature of the liquid crystal resin. The above-mentioned strand is provided with a supply means for supplying the thermoplastic liquid crystal resin fiber It is obtained by characterized in that it is wound around the mandrel with the thermoplastic liquid crystal resin fiber formed by spinning molding.

Furthermore, a thirteenth invention of the present application is the liquid crystal resin composite molding apparatus according to the twelfth invention, wherein the thermoplastic liquid crystal resin fiber formed by the spin molding is
After being wrapped around the mandrel with the above strand,
It is characterized in that it constitutes a part of a molded product.

[0024]

According to the first invention of the present application, after the plurality of strands are bundled, the strands in the bundled state are wound around the mandrel. Therefore, at the time of this winding, the plurality of strands in the bundled state are bundled. The strand of a book is one thick strand in its entirety, that is,
The strand is wound around the mandrel in an apparently thick state, and the tension applied to the strand during this winding can be sufficiently endured. That is, for each strand, even if the liquid crystal resin is thin enough to maintain the fiberized state, by converging these, the apparent thickness can be wound around the mandrel in a thick state, Strand breaks can be effectively prevented. In this case, even if one of the bundled strands breaks, it is not necessary to interrupt the filament winding unless all the strands break.

Further, according to the second invention of the present application, basically, the same effect as that of the first invention can be obtained. In particular, the strand in the above-mentioned converged state, the temperature range above the minimum moldable temperature of the matrix resin, and below the liquid crystal transition temperature of the liquid crystal resin (mold window)
Since it is wound around the mandrel while being heated inside, the strand can be smoothly wound around the mandrel while securing the weldability of the strand and while imparting elasticity to the strand to some extent. In this case, since the heating in the mold window and the subsequent winding around the mandrel are performed on the strands in the focused state, the presence of a large amount of liquid crystal fibers in the entire strands in the focused state causes the individual strands to be separated. Breaking is less likely to occur than in the case of.

Further, according to the third invention of the present application, since the strand is wound around the mandrel while being heated to a predetermined temperature lower than the minimum moldable temperature of the matrix resin, the tensile strength is excessive. It is possible to increase the elasticity of the strand in a state of not lowering so that the winding around the mandrel can be smoothly performed. Then, after that, since the strands wound around this mandrel were heated in the mold window so that the strands were welded to each other, after ensuring the tensile strength and elasticity of the strands when winding around the mandrel, that is, The strands can be reliably welded together while effectively preventing the strands from breaking during winding.

Further, according to the fourth invention of the present application,
A winding auxiliary member having a higher tensile strength than the heated strand in the mold window was placed so as to be located outside the strand when wound around the mandrel, and the winding auxiliary member was overlapped with the winding auxiliary member. In this state, since the strand is wound around the mandrel, the winding assisting member bears the tension at the time of winding, that is, the strand is wound around the mandrel while effectively preventing the strand from breaking due to this tension. be able to.

Further, according to the fifth invention of the present application,
Basically, the same effect as that of the above-mentioned fourth invention can be obtained. In particular, since the above-mentioned strand is made to be wound around the mandrel together with the thermoplastic liquid crystal resin fiber formed by spin molding, physical properties such as higher tensile strength than the liquid crystal resin existing in a fiber state in the matrix resin by so-called in-situ molding. It is possible to wind the strand around the mandrel while bearing the tension at the time of winding with the liquid crystal resin fiber formed by spin molding having the above, that is, effectively preventing the breakage of the strand due to this tension. The liquid crystal resin fiber (reinforcing fiber) formed by the above-mentioned spin molding may be formed by a synthetic fiber spin-molding method, and usually has a diameter of 10 to 20.
μ, about 10 of reinforcing fibers formed by in situ molding
Since it has a double diameter, it is less likely to be damaged even if shearing acts during molding, and the material strength during hot working can be significantly increased.

Further, according to the sixth invention of the present application,
Basically, the same effect as the fifth aspect of the invention can be obtained. In particular, since the thermoplastic liquid crystal resin fiber formed by the above-mentioned spin molding is wound around the mandrel together with the above-mentioned strand, so that it constitutes a part of the molded product,
By forming a part of the molded product by the liquid crystal resin fiber formed by spin molding, which has physical properties such as higher tensile strength than the liquid crystal resin present in the matrix resin in the fiber state, the physical properties of the molded product itself are also improved. be able to.

According to the seventh invention of the present application, a roving made of a spin-molded thermoplastic liquid crystal resin fiber having physical properties such as tensile strength higher than that of a liquid crystal resin fiber formed by so-called in-situ molding. To form a strand by impregnating a thermoplastic matrix resin with the mandrel, the strand being heated above the minimum moldable temperature of the matrix resin and below the liquid crystal transition temperature of the liquid crystal resin. Since the filament winding is carried out by winding it around, it is possible to obtain a molded article having high recyclability by filament winding while effectively preventing breakage of the strand.

According to the eighth invention of the present application, a plurality of extrusion holes are formed in the extrusion head of the extrusion molding machine, the focusing means is provided on the downstream side of the extrusion molding machine, and the focusing means is provided. Since a plurality of strands in a state of being bundled by the means is wound around the mandrel, at the time of this winding, the plurality of strands in the above-mentioned bundled state is one whole thick strand, that is,
The strand is wound around the mandrel in an apparently thick state, and the tension applied to the strand during this winding can be sufficiently endured. That is, for each strand, even if the liquid crystal resin is thin enough to maintain the fiberized state, by converging these, the apparent thickness can be wound around the mandrel in a thick state, Strand breaks can be effectively prevented. In this case, even if one of the bundled strands breaks, it is not necessary to interrupt the filament winding unless all the strands break.

Further, according to the ninth invention of the present application,
Basically, the same effect as that of the eighth invention can be obtained. In particular, in the molding device, the strand, the minimum moldable temperature of the matrix resin or higher,
And provided with heating means for heating within a temperature range below the liquid crystal transition temperature of the liquid crystal resin, a plurality of strands in a state of being focused by the focusing means, in a state of being heated in the temperature range by the heating means. Since it can be wound around the mandrel, it is possible to smoothly wind around the mandrel while ensuring the weldability of the strands and while imparting elasticity to the strands to some extent. In this case, since the heating in the mold window and the subsequent winding around the mandrel are performed on the strands in the focused state, the presence of a large amount of liquid crystal fibers in the entire strands in the focused state causes the individual strands to be separated. Breaking is less likely to occur than in the case of.

According to the tenth invention of the present application, the first heating means and the second heating means are provided, and the strand is less than the minimum moldable temperature of the matrix resin by the first heating means. Since the mandrel is wound around the mandrel while being heated to the predetermined temperature, the elasticity of the strand can be increased and the winding around the mandrel can be smoothly performed while the tensile strength is not lowered so much. Then, after that, the strand wound around the mandrel is heated in the mold window by the second heating means so that the strands are welded to each other, so that the tensile strength of the strand during winding around the mandrel and It is possible to reliably weld the strands while ensuring elasticity, that is, effectively preventing breakage of the strands during winding.

Further, according to the eleventh invention of the present application, a winding auxiliary member having a higher tensile strength than that of the strand in a heated state is provided in the mold window, and the winding auxiliary member is used for winding the mandrel around the winding auxiliary member. The strands are superposed so as to be located on the outside of the strands, and the strands are wound around the mandrel in a state of being superposed with the winding auxiliary member, so that the tension at the time of winding is applied by the winding auxiliary members, that is, The strand can be wound around the mandrel while effectively preventing the strand from breaking due to this tension.

Furthermore, according to the twelfth invention of the present application, basically, the same effect as that of the eleventh invention can be obtained. In particular, since the above-mentioned strand is adapted to be wound around the mandrel together with the thermoplastic liquid crystal resin fiber formed by spin molding, it is formed by spin molding having physical properties such as higher tensile strength than the liquid crystal resin existing in the matrix resin in a fiber state. It is possible to wind the strand around the mandrel while applying the tension at the time of winding with the liquid crystal resin fiber, that is, effectively preventing the strand from breaking due to this tension.

Further, according to the thirteenth invention of the present application, basically, the same effect as that of the twelfth invention can be obtained. In particular, since the thermoplastic liquid crystal resin fiber formed by the spin molding is wound around the mandrel together with the above strand to form a part of the molded product, the liquid crystal resin existing in a fiber state in the matrix resin is Since the liquid crystal resin fiber formed by spin molding and having physical properties such as high tensile strength constitutes a part of the molded product, the physical properties of the molded product itself can be improved.

[0037]

Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. First, a first embodiment of the present invention will be described. FIG. 1 is an explanatory view schematically showing the overall configuration of a molding apparatus for molding by a filament winding method using a strand-shaped molding material of a liquid crystal resin composite according to a first embodiment of the present invention. As shown in this figure,
As described later in detail, the molding apparatus 1 includes an extruder 2 for simultaneously extruding a plurality of strands Sm made of a liquid crystal resin composite, a cooling tank 3 for cooling each extruded strand Sm, and each extruded extruded strand Sm. It is provided with a pair of take-up rollers 4 that draws the strand Sm to the downstream side while stretching it. Plural strands Sm extruded by the extruder 2
As will be described later, the bundle is bundled while being drawn to form a bundle S, which is drawn out to the downstream side.

On the downstream side of the take-up rollers 4, 4, a tension controller 5 for adjusting the tension of the drawn focused strand S and a strand S whose tension is adjusted by the tension controller 5 are wound. The mandrel 6 is provided with, for example, a heater 7 for heating the strand S to a predetermined temperature before being wound around the mandrel 6, and a delivery barrier 8 for positioning the strand S during winding around the mandrel 6. Further, at the lateral position of the mandrel 6 in the radial direction,
A pressing roller 20 for pressing the wound focused strand S to the front surface side of the mandrel 6 is arranged.
Although not specifically shown in the drawings, the molding apparatus 1 has the following features in order to comprehensively control the operations of the components.
For example, a control unit including a microcomputer as a main part is provided.

The extruder 2 is a supply means for supplying the strands Sm of the liquid crystal resin composite, and the cylindrical main body 1
1 and a nozzle head 12 fixed to the tip of the main body
Although not specifically shown, the rotary screw is housed in the main body 11. And more preferably, a fibrous thermoplastic liquid crystal resin (liquid crystal fiber) aligned in a predetermined length, and a minimum moldable temperature lower than the liquid crystal transition temperature of the liquid crystal resin (melting point in the case of crystalline material) Pellets containing only the thermoplastic matrix resin having the above are charged from the hopper 14 and the rotating screw is driven at a predetermined number of revolutions, whereby the charged pellets of the thermoplastic matrix resin are plasticized and melted, and the matrix A strand-shaped liquid crystal resin composite in which the liquid crystal fibers are oriented in the resin is extruded from the nozzle head 12.

In the present embodiment, a plurality of extrusion holes 12a are formed in the nozzle head 12, and the number of strands Sm corresponding to the number of the extrusion holes 12a, ... Are pushed out at the same time. When the number of the extrusion holes 12a, ..., 12a is large, they are laid out in a honeycomb shape, for example. The strands Sm extruded from the extruding holes 12a are stretched and brought together in the width direction to be bundled. At this time, when the strands Sm are brought close to each other before being cooled by the cooling tank 3, the strands Sm are welded to each other to be an integrated strand, but after the strands Sm are cooled, When they come into close contact with each other, the strands Sm are bundled independently of each other. In the present embodiment, more preferably, the positions of the cooling tank 3 and the guide rollers 3A, 3A are set such that the strands Sm are cooled and then brought into close contact with each other and are individually focused. That is, the bundled strand S is composed of a plurality of independent strands Sm bundled together.

Further, in the present embodiment, the following are used as the above-mentioned thermoplastic liquid crystal resin and thermoplastic matrix resin. -Thermoplastic liquid crystal resin-Material name: Aromatic polyester resin-Product name: Vectra A950 (manufactured by Polyplastics Co., Ltd.)-Liquid crystal transition temperature: 280 ° C-Thermoplastic matrix resin-Material name: Olefin resin-Product name: Nobrene D501 (Sumitomo Chemical Co., Ltd.)-Melting point: 176 ° C (normal molding temperature: about 200 ° C)

When the above resin material is used, the strand S
When m is extrusion-molded, the extrusion-molding is performed at a temperature higher than the liquid crystal transition temperature of the liquid crystal resin, for example, a molding temperature of 290 ° C. Further, the cooling tank 3 has, for example, a room temperature.
The cooling water (about 25 ° C.) is stored, and the strand Sm extruded at the molding temperature is cooled to about room temperature in this cooling tank 3. Further, when the bundled strands S formed by bundling the strands Sm are welded to each other, they are in a temperature range not lower than the minimum moldable temperature of the thermoplastic matrix resin and lower than the liquid crystal transition temperature of the thermoplastic liquid crystal resin. The focusing strand S is heated to a temperature of, for example, 200 ° C. as a predetermined temperature.

As a molding material for extruding the strand Sm by the extruder 2, instead of separately charging the matrix resin pellets and the liquid crystal fibers into the hopper 14 as described above, they are formed by both. A liquid crystal resin composite pellet is prepared in advance, and this pellet is used in the hopper 14
Alternatively, it may be supplied to the extruder 2. The strand supply means is not limited to the extruder 1 as described above. For example, the strand extruded by the extruder is wound around a so-called bobbin, and a plurality of bobbins are arranged side by side. The strands may be simultaneously supplied from the bobbin to the mandrel 6 side.

The strands Sm extruded from the extruder 2 are converged while being stretched by the action of the take-up rollers 4 to a predetermined stretching ratio, and the cooling tank 3
It is cooled by the drawing rollers 4 and 4 and is drawn out to the downstream side (the mandrel 6 side) as a bundle of strands S.
The tension controller 5 is composed of a pair of so-called dancer rollers 16A, 16B and a movable arm 17 for adjusting the position of the roller 16B on one side. The movable arm 17 is driven to drive, for example, the lower dancer roller in the figure. By adjusting the position of 16B, the tension of the focused strand S can be adjusted appropriately.

The focused strands S, to which a predetermined tension is applied by the tension controller 5, are heated by the heater 7 in a temperature range above the minimum moldable temperature of the thermoplastic matrix resin and below the liquid crystal transition temperature of the thermoplastic liquid crystal resin ( While being heated to a predetermined temperature (for example, 200 ° C.) in a so-called mold window and only the matrix resin around the liquid crystal fibers is softened, the matrix resin is regularly wound around the outer periphery of the mandrel 6 while being positioned by the delivery barrier 8. The mandrel 6 is rotationally driven by a drive device (not shown), and the strand S is wound around the rotating mandrel 6 on the outer peripheral side thereof. And
The focused strands S wound around the mandrel 6 are welded to each other while being pressed against the surface side of the mandrel 6 by the pressing roller 20. In addition, the focused strand S is heated to a temperature (200
In the case of heating to (° C.), instead of heating with the heater 7 as described above, a fluid (for example, oil) whose temperature is maintained at 200 ° C. is stored in the cooling tank 3 and the strand S is allowed to pass through this fluid. Therefore, heating into the mold window may be performed.

As described above, according to this embodiment, the nozzle head 12 of the extruder 2 is formed with a plurality of extrusion holes 12a, and the strands Sm extruded from the extrusion holes 12a are extruded. In addition to focusing on the downstream side of 2, the focusing strand S formed by focusing the plurality of strands Sm is wound around the mandrel 6, so that at the time of this winding, the plurality of strands Sm ( That is, the focused strand S) is to be wound around the mandrel 6 as one thick strand in its entirety, that is, in a state in which the thickness of the strand is apparently thick, and the tension acting on the strand S during this winding is applied. You will be able to withstand it. That is, even if the liquid crystal resin of the individual strands Sm is thin enough to maintain the fibrous state, the strands Sm can be wound around the mandrel 6 in a thick apparent state by converging them. You can
The breakage of the strand S can be effectively prevented. In this case, even if one of the bundled strands Sm breaks, it is not necessary to interrupt the filament winding unless all the strands Sm (that is, the focused strands S) break.

Further, in particular, the strand S (focused strand) in the focused state is heated within a temperature range (mold window) above the minimum moldable temperature of the matrix resin and below the liquid crystal transition temperature of the liquid crystal resin. Since the mandrel 6 is wound around the mandrel 6 in this state, it is possible to smoothly wind the mandrel 6 while ensuring the weldability of the strands S and while imparting elasticity to the strands S to a certain degree or more. In this case, since the heating in the mold window and the subsequent winding around the mandrel 6 are performed on the focusing strand S, the presence of a large amount of liquid crystal fibers in the focusing strand S as a whole causes the individual strands Sm to be separated from each other. Breaking is less likely to occur than in the case.

Instead of winding the bundled strands S around the mandrel 6 as described above and molding them as they are, the bundled strands S may be once wound around a bobbin and the strands S may be supplied from this bobbin.

When the focused strand S is heated to the temperature in the mold window, a heating device 22 utilizing microwave heating, as shown in FIG. 2, is used instead of the usual heater 7 as described above. By using it, the matrix resin of the strand Sm can be preferentially heated. In the forming device 29 shown in FIG. 2, the focusing strand S is stored in a state of being wound around the bobbin 25. In this case, it is effective to use, as the thermoplastic matrix resin of the strand Sm, a resin having a high absorption efficiency during microwave heating.

In this example, the following resins were used as the thermoplastic matrix when heating by microwave heating. -Thermoplastic matrix resin-Material name: Polyamide resin-Product name: Nylon 1013B (manufactured by Ube Industries, Ltd.)-Melting point: 215 ° C (normal molding temperature 230 ° C) By using the microwave heating device 22 as described above, The matrix resin can be heated to the melting temperature while suppressing the temperature rise of the liquid crystal fibers and minimizing the decrease in the tensile strength thereof.

Further, the strength of the bundled strand S can be improved by twisting the strands Sm constituting the bundled strand S together. That is, for example, as shown in FIG.
3 and an L-shaped arm portion 34 rotatably supported with respect to the fixed portion 33. And the arm portion 3
By supplying the focused strands S that have passed through the heater 31 to the delivery barrier 32 while rotating 4 around the axis line in the direction that coincides with the traveling direction of the focused strands S, the focused strands S are twisted in a unified state. The strand S ′ of the book is wound around the outer periphery of the mandrel 36. In this case, the mandrel 36 is arranged in a direction whose longitudinal axis coincides with the traveling direction of the focusing strands S, and is reciprocated along the longitudinal axis direction by the drive device 39, and the mandrel 36 is rotated around the mandrel 36. The arm portion 34 is adapted to wind the strand S ′ while rotating.

Next, the strand is wound around the mandrel while the matrix resin is only softened to some extent,
A second embodiment of the present invention will be described in which the strand is prevented from breaking by heating the strand at a predetermined temperature in the mold window during or after the winding. In the following explanation,
The same parts as those in the first embodiment are designated by the same reference numerals, and further description will be omitted. FIG. 4 is an explanatory view schematically showing the overall configuration of the molding device 49 according to the second embodiment. As shown in this figure, in the present embodiment, the strand Sn is stocked in a state of being wound on, for example, a bobbin 30, and the strand Sn supplied from this bobbin 30 has its direction changed by a roller 31. After that, the tension is adjusted by the tension controller 5, and
The mandrel 6 while being heated to a predetermined temperature by the heater 42
Wrapped around.

At the lateral position of the mandrel 6 in the radial direction, in order to press the wound strand Sn toward the surface side of the mandrel 6, more preferably, 2
Book pressing rollers 44 and 45 are arranged at positions facing each other by 180 degrees with respect to the center of the mandrel 6. Although not specifically shown, heaters for heating the strand Sn wound around the mandrel 6 to a predetermined temperature in the mold window are embedded in the pressing rollers 44, 45. It should be noted that the two pressing rollers 44 and 45 are attached to the center of the mandrel 6 by 180
By arranging the mandrel 6 at opposite positions, it is possible to suppress the bending of the mandrel 6 during filament winding, and it is particularly advantageous when the mandrel 6 is a long object.

In this embodiment, the heating temperature of the heater 42 for heating the strand Sn before winding it around the mandrel 6 is lower than the minimum moldable temperature of the matrix resin, and is a temperature sufficient to soften the matrix resin to some extent (for example, as shown in FIG. In the case of the resin material applied to the molding apparatus shown in FIG. 1, the temperature is set to about 130 ° C.), while the pressure roller 4
The heating temperature of each heater embedded in Nos. 4 and 45 is set to a predetermined temperature in the mold window. That is, the heater 42 constitutes the first heating means in claim 10 of the present application, and the heaters embedded in the pressing rollers 44 and 45 constitute the second heating means. The heating temperatures of the heaters in the pressing rollers 44 and 45 are more preferably set lower on the pressing roller 44 side that presses when winding the strand Sn than on the pressing roller 45 side that presses after winding, In the case of the resin material applied to the molding apparatus shown in FIG. 1, the pressure roller 44 side is, for example, 180 ° C., and the pressure roller 45 side is, for example, 200 ° C.
Is set to.

According to this embodiment, the strand Sn
Is wound around the mandrel 6 while being heated to a predetermined temperature lower than the minimum moldable temperature of the matrix resin. Therefore, the elasticity of the strand Sn is increased and the winding around the mandrel 6 is performed while the tensile strength is not lowered so much. Can be done smoothly. Then, after that, the strand Sn wound around the mandrel 6 is heated in the mold window to weld the strands Sn together, so that the tensile strength and elasticity of the strand Sn during winding around the mandrel 6 are secured. Moreover, it is possible to reliably weld the strands Sn together, that is, after effectively preventing breakage of the strands Sn during winding.

Next, when the strand is wound around the mandrel, the strand is prevented from breaking by being fed to the mandrel side in a state of being overlapped with a winding member having a higher tensile strength than the strand heated to the temperature in the mold window. A third embodiment of the present invention will be described. FIG. 5 is an explanatory view schematically showing the overall configuration of the molding device 59 according to the third embodiment. As shown in this figure, in the present embodiment, as a winding auxiliary member to be fed to the mandrel 6 together with the strand Sn at a position opposite to the bobbin 30 in which the strand Sn is wound and stored, and the traveling direction of the strand Sn. A bobbin 50 that stores the belt material B is provided.

The belt material B has a tensile strength higher than that of the strands heated above the minimum moldable temperature of the matrix resin and below the liquid crystal transition temperature of the liquid crystal resin (mold window). As a material
For example, it is formed of rubber reinforced with a reinforcing fiber material.
As the material of the belt material B, for example, other materials such as a durable release paper or a release film can be used as long as they satisfy the above temperature and strength conditions. The belt material B supplied from the bobbin 50 is turned around by the roller 31 arranged at a predetermined distance from the roller 31 arranged on the supply side of the strand Sn, and the strand S
It is sent to the downstream side together with the strand Sn so as to overlap with n.

The tension of the strand Sn and the belt material B thus superposed is adjusted by the tension controller 5 and the strand S is adjusted by the heater 42.
It is fed to the mandrel 6 side while being heated to a predetermined temperature in the n mold window. Both bobbins 30 and 50 are arranged so that the belt material B is located outside the strand Sn when it is fed to the mandrel 6 side. Further, a belt winding bobbin 56 is arranged on the downstream side of the mandrel 6, and the belt material B after the winding of the strand Sn around the mandrel 6 is assisted,
It is adapted to be wound around the belt winding bobbin 56.

According to this embodiment, the belt material B having a higher tensile strength than the heated strand Sn in the mold window is superposed so as to be located outside the strand Sn when wound around the mandrel 6. Place and
In this superposed state, the strand Sn is wound around the mandrel 6, so that the belt material B bears the tension at the time of this winding, that is, while effectively preventing the strand Sn from breaking due to this tension,
The strand Sn can be wound around the mandrel 6.

Incidentally, the winding assisting member may be in another form. FIG. 6 is an explanatory view schematically showing the overall configuration of the molding apparatus 69 according to the modified example of the third embodiment. As shown in this figure, in the present embodiment, a conveyor-like belt material 66 is provided on the outer peripheral side of the mandrel 6 so as to cover a predetermined area thereof. Inside the belt material 66, a plurality of rollers 62 in which a heater (not shown) for heating the strand Sn to a predetermined temperature in the mold window is embedded are arranged. Along with the rotational driving, the belt material 66 is driven along the surface of the mandrel 6 in the same direction as the rotational direction while applying a pressing force to the surface side of the mandrel 6.

The strand Sn wound around the mandrel 6 is heated to the temperature inside the mold window by the belt material 66 with the belt material 66 superposed on the outside thereof, and is directed toward the surface side of the mandrel 6. It is wound around the mandrel 6 while being pressed by. That is, when the strand Sn is wound around the mandrel 6, the tension at the time of winding is applied to the belt material 6
Therefore, the strand Sn can be wound around the mandrel 6 while the strain is applied to the mandrel 6, and thus the breakage of the strand Sn due to this tension is effectively prevented.

Next, spin molding is carried out in which the tensile strength is higher than that of the strands heated in the temperature range (mold window) below the minimum moldable temperature of the matrix resin and below the liquid crystal transition temperature of the liquid crystal resin. A description will be given of a fourth embodiment in which the thermoplastic liquid crystal resin fiber thus obtained is wound around the mandrel together with the strand. Figure 7
[FIG. 8] is an explanatory view schematically showing an overall configuration of a molding apparatus 79 according to a fourth example. As shown in this figure, the molding device 79 has a configuration in which a spinning device 71 is added to the molding device 1 (see FIG. 1) used in the first embodiment as a whole. This spinning device 71 has a material container 72 for storing the thermoplastic liquid crystal resin LE in a molten state, and the stored liquid crystal resin melt LE is extruded from a spinneret 72a provided at the end of the material container 72. As a result, a large number of resin fibers (liquid crystal fibers) LF containing 100% liquid crystal resin and having a predetermined wire diameter can be obtained. At this time, the diameter and the number of the obtained liquid crystal fibers LF are determined by the pores formed in the spinneret 72a.
Determined according to the diameter and number of (not shown).

The spin-molded thermoplastic liquid crystal resin fiber LF has a diameter of 10 to 20 μm and is about 10 times the diameter of the liquid crystal fiber obtained by in-situ molding. In addition, it is less likely to be damaged by shearing, and has physical properties such as higher tensile strength even when hot. In this embodiment, as the thermoplastic liquid crystal resin to be spin molded, for example, the above-mentioned Vectra A9 is used.
50 (manufactured by Polyplastics Co., Ltd.) was used. The thermoplastic liquid crystal resin fiber LF formed by the spin molding has a diameter of 1 as described above in the as-spun state.
Since they have a diameter of 0 to 20 μm, more preferably, a plurality of them are collected and bundled or twisted to be bundled, and for example, those having a diameter of 1 to 5 mm are used. At this time, more preferably, a thermoplastic matrix resin to be composited or a thermoplastic resin compatible with the matrix resin is used as a binder.

After the liquid crystal fiber LF formed by the spin molding is drawn by the drawing rollers 74, 74, it is sequentially passed through the guide rollers 75, 76, 77 for changing the direction, and on the convergent strand S obtained by the molding apparatus 1. To send. The liquid crystal fiber LF formed by the spin molding is supplied between the drawing rollers 4 and 4 and the tension controller 5 so as to overlap the focusing strand S, and is sent to the downstream side together with the focusing strand S in this overlapping state. . An example of a state in which the liquid crystal fibers LF formed by the spin molding and the focusing strands S overlap each other is schematically shown in the explanatory view of FIG. In this case, a large number of spin-molded liquid crystal fibers LF are stacked in the gaps between the strands Sm forming the bundles S.

The tension of the convergent strand S and the liquid crystal fiber LF formed by the spin molding which are superposed in this way are adjusted by the tension controller 5 and at the predetermined temperature in the mold window of the convergent strand S by the heater 7. It is fed to the mandrel 6 side in a heated state.
The focused strand S fed to the mandrel 6 side is
Liquid crystal fibers stacked in the mold window by the tension of the liquid crystal fibers LF formed by spin molding having a higher tensile strength, that is, in the gap portion outside each adjacent strand Sm of each strand Sm forming the focused strand S. The mandrel 6 is wound around the mandrel 6 while being pressed against the outer peripheral side of the mandrel 6 by the tension of the LF. In addition, the liquid crystal fiber LF formed by spin molding
Also, while assisting the winding of the focusing strand S, the winding itself is also wound around the mandrel 6 and constitutes a part of the molded product.

As described above, according to the present embodiment, the thermoplastic resin formed by the so-called in-situ molding has a physical property such as tensile strength higher than that of the liquid crystal resin existing in a fiber state in the matrix resin. Liquid crystal resin fiber L
By carrying out filament winding of F together with the strand Sm, while carrying the tension at the time of winding with the thermoplastic liquid crystal resin fiber LF formed by the above-mentioned spin molding,
That is, the strand Sm can be wound around the mandrel 6 while effectively preventing the strand Sm from breaking due to this tension. Further, in particular, since the liquid crystal resin fiber LF formed by the spin molding is wound around the mandrel 6 together with the strand Sm and constitutes a part of the molded product, it exists in the matrix resin in a fibrous state. By forming a part of the molded product by the liquid crystal resin fiber formed by spin molding, which has physical properties such as tensile strength higher than that of the liquid crystal resin, the physical properties of the molded product itself can be improved.

Instead of the above-mentioned focused strand S, an ordinary strand may be used as in the second and third embodiments. Further, instead of winding the spin-molded liquid crystal fiber LF around the mandrel 6 together with the strand after the spin molding, the liquid crystal fiber LF is used.
Once wound on a bobbin, liquid crystal fiber LF
May be supplied. FIG. 9 is an explanatory view schematically showing the overall configuration of the molding device 89 according to the modified example of the fourth embodiment. As shown in this figure, in this embodiment, the liquid crystal fibers LF formed by spin molding are stocked in a state of being wound on a bobbin 81, and the strands Sn are stocked in a state of being wound on a bobbin 82. These bobbins 8
Liquid crystal fibers LF and strands Sn supplied from 1,82
After the direction is changed by the guide rollers 83 and 84, the tension is adjusted by the tension controller 5, and the heater 7 is wound around the mandrel 6 while being heated to a predetermined temperature in the mold window.

In this case, the liquid crystal fiber LF formed by the spin molding and the strand Sn are supplied so as to overlap behind the guide rollers 83 and 84, and are sent to the downstream side in this overlapped state. An example of a state in which the liquid crystal fibers LF formed by the spin molding and the strands Sn overlap each other is shown in FIG.
It is schematically shown in the explanatory diagram of 0. In this case, many strands Sn are located in the gaps between the liquid crystal fibers LF formed by spin molding.

Next, a fifth embodiment of the present invention will be described. FIG. 12 is an explanatory view schematically showing the overall structure of a liquid crystal resin composite molding apparatus according to the fifth embodiment of the present invention.
As shown in this figure, the molding device 99 includes an extrusion molding machine 93 for extruding the thermoplastic liquid crystal resin L into the thermoplastic matrix resin M so that the thermoplastic liquid crystal resin L is in a fiber state, and performing so-called in-situ molding. A plurality of bobbins 9 for storing the thermoplastic liquid crystal resin fibers LF formed by spin molding
1, ..., 91 are provided. Further, a molding die 92 is arranged between the extruder 93 and the bobbins 91, ..., 91.

The extrusion molding machine 93 includes, for example, a cylindrical main body and a rotating screw housed therein.
A thermoplastic liquid crystal resin material charged from a hopper and a thermoplastic matrix resin material having a minimum moldable temperature lower than the liquid crystal transition temperature of the liquid crystal resin are heated at a temperature equal to or higher than the liquid crystal transition temperature in the main body. In-situ molding is carried out by kneading and applying a shearing force of not less than a predetermined value and extruding both at the same time. The extrusion molding machine 2,
Since the construction and operation of all of the four are the same as those well known in the prior art, the illustration and detailed description of the internal structure thereof are omitted.

In the extrusion molding machine 93, the respective resin materials of the thermoplastic liquid crystal resin material and the thermoplastic matrix resin material, which have been charged, are heated to a temperature not lower than the liquid crystal transition temperature,
The molten resin material is extruded under a predetermined condition and supplied to the die 92. On the other hand, the die 92 is supplied with the thermoplastic liquid crystal resin fiber LF formed by spin molding from the bobbins 91, ..., 91. And this die 9
2, the thermoplastic matrix resin M and the thermoplastic liquid crystal resin Lm higher than the minimum moldable temperature of the matrix resin M are provided on the outer peripheral side of the thermoplastic liquid crystal resin fiber LF formed by spin molding, as shown in FIG. Strands Sp coated with a liquid crystal resin composite compounded by in-situ molding are extruded. That is, on the outer peripheral side of this strand Sp, the thermoplastic matrix M
Is impregnated. Note that only the thermoplastic matrix resin may be supplied from the extrusion molding machine 93.

This strand Sp is, as described above,
The structure is such that the liquid crystal fiber LF formed by the spin molding is embedded in the substantially central portion, and the periphery thereof is covered with the in-situ molded liquid crystal resin composite. Regarding this in-situ molded part, the liquid crystal resin is well fiberized in the part close to the surface along the extrusion direction, but in the part close to the center it cannot be fully fiberized and part is granular. May be. However, in this part, the spun molded liquid crystal fiber L
Since the Fs are present so as to be almost adjacent to each other, there is no particular adverse effect on the strength and rigidity of the strand Sp. The strand Sp is fed downstream and wound around the mandrel 6. At this time, the pressing roller 44,
By a heater embedded in 45, while being heated to a temperature range not lower than the minimum moldable temperature of the matrix resin and lower than the liquid crystal transition temperature of each liquid crystal resin, the mandrel 6 is crimped while being wound. It has become.

As described above, according to the present embodiment, the thermoplastic liquid crystal resin fiber LF formed by spin molding has physical properties such as higher tensile strength than the liquid crystal resin fiber formed by so-called in situ molding. A roving made of is impregnated with a thermoplastic matrix resin M to form a strand Sp, and the strand Sp is in a temperature range not lower than the minimum moldable temperature of the matrix resin M and lower than the liquid crystal transition temperature of the liquid crystal resin. Since the filament winding is performed by winding the filament around the mandrel 6 in a state of being heated, the molded product having high recyclability can be obtained by the filament winding while effectively preventing breakage of the strand Sp.

[Brief description of drawings]

FIG. 1 is an explanatory diagram schematically showing the overall configuration of a molding apparatus according to a first embodiment of the present invention.

FIG. 2 is an explanatory view schematically showing an overall configuration of a molding apparatus according to a modified example of the first embodiment.

FIG. 3 is an explanatory diagram showing an outline of a delivery barrier and a mandrel according to another modification of the first embodiment.

FIG. 4 is an explanatory view schematically showing an overall configuration of a molding apparatus according to a second embodiment of the present invention.

FIG. 5 is an explanatory view schematically showing an overall configuration of a molding apparatus according to a third embodiment of the present invention.

FIG. 6 is an explanatory view schematically showing an overall configuration of a molding apparatus according to a modified example of the third embodiment.

FIG. 7 is an explanatory diagram schematically showing the overall structure of a molding apparatus according to a fourth embodiment of the present invention.

[Fig. 8] Fig. 8 is an explanatory view schematically showing a state in which the bundled strands according to the fourth embodiment and liquid crystal fibers formed by spin molding are superposed.

FIG. 9 is an explanatory diagram schematically showing the overall structure of a molding apparatus according to a modified example of the fourth embodiment.

FIG. 10 is an explanatory view schematically showing a state in which a strand according to a modified example of the fourth embodiment and liquid crystal fibers formed by spin molding are superposed.

FIG. 11 is an explanatory longitudinal sectional view of a strand according to a fifth embodiment of the present invention.

FIG. 12 is an explanatory diagram schematically showing the overall configuration of a liquid crystal resin composite molding apparatus according to the fifth embodiment.

[Explanation of symbols]

 1, 29, 49, 59, 69, 79, 89 ... Molding device 2 ... Extruder 4 ... Take-up roller 5 ... Tension controller 6 ... Mandrel 7,42 ... Heater 12 ... Nozzle head 12a ... Extrusion hole 44, 45 ... Pressing roller 66 ... Belt material 71 ... Spinning device B ... Belt material LF ... Spin-formed liquid crystal fiber Lm ... Thermoplastic liquid crystal resin M ... Thermoplastic matrix resin S ... Focused strands Sm, Sn, Sp ... Strands

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kenji Moriwaki No. 3 Shinchi Fuchu-cho, Aki-gun, Hiroshima Prefecture Mazda Co., Ltd. (72) Masatoshi Shinomori No. 3 Shinchi, Fuchu-cho, Hiroshima Prefecture Mazda Co., Ltd. Within

Claims (13)

[Claims] 1. Molding is performed by a filament winding method using a strand in which a thermoplastic liquid crystal resin having a liquid crystal transition temperature higher than the minimum moldable temperature of the matrix resin is present in the thermoplastic matrix resin in a fibrous state. A method for molding a liquid crystal resin composite, wherein a plurality of strands are simultaneously supplied from a strand supply means for supplying the strands, the plurality of strands are bundled, and then the strands in the bundled state are wound around a mandrel. A method for molding a liquid crystal resin composite, comprising: 2. The method for molding a liquid crystal resin composite according to claim 1, wherein the strands in the bundled state are
A method of molding a liquid crystal resin composite, which comprises winding the mandrel at a temperature not lower than the minimum moldable temperature of the matrix resin and lower than the liquid crystal transition temperature of the liquid crystal resin around the mandrel. 3. Molding is performed by a filament winding method using a strand in which a thermoplastic liquid crystal resin having a liquid crystal transition temperature higher than the minimum moldable temperature of the matrix resin is present in the thermoplastic matrix resin in a fibrous state. A method for molding a liquid crystal resin composite, wherein the strand is wound around a mandrel while being heated to a predetermined temperature lower than the minimum moldable temperature of the matrix resin, and then the strand wound around the mandrel is formed into the matrix. A method for molding a liquid crystal resin composite, comprising heating the strands at a temperature not lower than the minimum moldable temperature of the resin and lower than the liquid crystal transition temperature of the liquid crystal resin to weld the strands. 4. Molding is carried out by a filament winding method using a strand in which a thermoplastic liquid crystal resin having a liquid crystal transition temperature higher than the minimum moldable temperature of the matrix resin is present in the thermoplastic matrix resin in a fibrous state. A method for molding a liquid crystal resin composite, which has a higher tensile strength than a strand in a state of being heated to a temperature equal to or higher than the minimum moldable temperature of the matrix resin and lower than the liquid crystal transition temperature of the liquid crystal resin. A liquid crystal resin composite, characterized in that an auxiliary member is superposed and arranged so as to be located on the outside of the strand when wound around a mandrel, and the strand is wound around the mandrel in a state of being superposed with the winding auxiliary member. Body shaping method. 5. Molding is carried out by a filament winding method using a strand in which a thermoplastic liquid crystal resin having a liquid crystal transition temperature higher than the minimum moldable temperature of the matrix resin is present in the thermoplastic matrix resin in a fibrous state. A method for molding a liquid crystal resin composite, wherein the strand is more stretched than a strand in a state of being heated at a temperature equal to or higher than the minimum moldable temperature of the matrix resin and lower than a liquid crystal transition temperature of the liquid crystal resin. A method for molding a liquid crystal resin composite, characterized in that the liquid crystal resin composite is wound around a mandrel together with a thermoplastic liquid crystal resin fiber formed by spin molding having high strength. 6. The method for molding a liquid crystal resin composite according to claim 5, wherein the thermoplastic liquid crystal resin fiber formed by the spin molding is wound around a mandrel together with the strand, and then a part of the molded product is formed. A method for molding a liquid crystal resin composite, comprising: 7. A strand is formed by impregnating a roving made of a thermoplastic liquid crystal resin fiber formed by spin molding with a thermoplastic matrix resin, and forming the strand at a temperature not lower than the minimum moldable temperature of the matrix resin, and A method for molding a liquid crystal resin composite, which comprises winding a filament around a mandrel while heating it within a temperature range lower than the liquid crystal transition temperature of the liquid crystal resin. 8. Strand supply means for supplying a strand in which a thermoplastic liquid crystal resin having a liquid crystal transition temperature higher than the minimum moldable temperature of the matrix resin is present in the thermoplastic matrix resin in a fibrous state, and the supply. In a molding apparatus for a liquid crystal resin composite, which comprises a mandrel around which the strands supplied from the means are wound around the outer circumference, and a tension adjusting means for adjusting the tension of the strands when wound around the mandrel, An extrusion molding machine for extruding the strands is provided, and a plurality of extrusion holes are formed in an extrusion head of the extrusion molding machine, and the extrusion head is extruded simultaneously from the plurality of extrusion holes on the downstream side of the extrusion molding machine. A focusing means is provided for focusing the separated strands, and a plurality of fibers in a state of being converged by the focusing means are provided. Strands forming apparatus of a liquid crystal polymer composite material, characterized by being wound around the mandrel. 9. The liquid crystal resin composite molding apparatus according to claim 8, wherein the molding apparatus includes the strand at a temperature equal to or higher than the minimum moldable temperature of the matrix resin,
Further, a heating means for heating within a temperature range lower than the liquid crystal transition temperature of the liquid crystal resin is provided, and a plurality of strands in a state of being focused by the focusing means are in a state of being heated within the temperature range by the heating means. A device for molding a liquid crystal resin composite, which is wound around the mandrel. 10. Strand supply means for supplying a strand in which a thermoplastic liquid crystal resin having a liquid crystal transition temperature higher than the minimum moldable temperature of the matrix resin is present in the thermoplastic matrix resin in a fibrous state, and the supply. In a molding apparatus for a liquid crystal resin composite, which comprises a mandrel around which the strand supplied from the means is wound around the outer peripheral side, and a tension adjusting means for adjusting the tension of the strand at the time of winding around the mandrel, the molding apparatus comprises: First heating means for heating the strand to a predetermined temperature lower than the minimum moldable temperature of the matrix resin, and the strand above the minimum moldable temperature of the matrix resin and below the liquid crystal transition temperature of the liquid crystal resin. The second heating means for heating within the temperature range of The Portland,
The mandrel is wound around the mandrel while being heated to the predetermined temperature by the first heating means, and then the second mandrel is used.
A device for molding a liquid crystal resin composite, wherein the strands are welded by being heated to the above temperature range by the heating means. 11. Strand supply means for supplying a strand in which a thermoplastic liquid crystal resin having a liquid crystal transition temperature higher than the minimum moldable temperature of the matrix resin is present in the thermoplastic matrix resin in a fibrous state, and the supply. In a molding apparatus for a liquid crystal resin composite, which comprises a mandrel around which the strand supplied from the means is wound around the outer periphery side, and a tension adjusting means for adjusting the tension of the strand at the time of winding around the mandrel, the molding apparatus comprises: The matrix resin is provided with a winding auxiliary member having a tensile strength higher than the minimum moldable temperature of the matrix resin and higher than the strand in a state of being heated within a temperature range lower than the liquid crystal transition temperature of the liquid crystal resin, and the winding auxiliary member is When wrapping the above strand around the mandrel, stack it so that it is located outside the strand. In a state of being, molding apparatus of the liquid crystal polymer composite material, characterized in that the strand is wound around the mandrel. 12. Strand supply means for supplying a strand in which a thermoplastic liquid crystal resin having a liquid crystal transition temperature higher than the minimum moldable temperature of the matrix resin is present in the thermoplastic matrix resin in a fibrous state, and the strand. In a molding device for a liquid crystal resin composite, which comprises a mandrel around which the strand supplied from the supply device is wound around the outer peripheral side, and a tension adjusting device for adjusting the tension of the strand at the time of winding around the mandrel, the molding device comprises: Supplying a thermoplastic liquid crystal resin fiber formed by spin molding having a tensile strength higher than that of a strand in a state of being heated to a temperature above the minimum moldable temperature of the matrix resin and below a liquid crystal transition temperature of the liquid crystal resin. The above-mentioned strand is a thermoplastic liquid formed by the above-mentioned spin molding. Forming device for a liquid crystal polymer composite material, characterized by being wound around the mandrel with the resin fibers. 13. The liquid crystal resin composite molding apparatus according to claim 12, wherein the thermoplastic liquid crystal resin fiber formed by the spin molding is wound around a mandrel together with the strand, and then a part of the molded product is formed. A molding apparatus for a liquid crystal resin composite, which is characterized in that: