TWI655081B - Equipment and method for producing ultra thin films - Google Patents

Abstract

The forming device of the ultra-thin thermoplastic fiber reinforced composite material comprises a yarn spreading fabric module and a hot pressing module, the yarn forming fabric module comprises a receiving groove, a plurality of yarn guiding guides and a plurality of air inlet holes a plurality of the yarn guiding rods are disposed on the wall of the accommodating groove, so that the plurality of yarn bundles are respectively unfolded into a plurality of fiber yarns and continuously arranged, and the air inlet holes are disposed at the bottom of the accommodating groove groove, and the gas is ventilated Circulating into the accommodating groove, the air flow uniformly distributes a thermoplastic rubber powder on the fiber yarn; the hot pressing module is disposed adjacent to the sifting fabric module, and comprises a heatable rolling mechanism, The rolling mechanism applies pressure to the yarn bundle of the plurality of fiber yarns in a radial direction, so that the plurality of the yarn bundles form the extremely thin thermoplastic fiber reinforcing composite material; and the yarn fabric module before and/or Or a bunch of alignment devices are included.

Description

Ultra-thin thermoplastic fiber reinforced composite material forming equipment and process thereof

A method for producing a sheet, in particular, a method for producing an extremely thin thermoplastic fiber-reinforced composite material and an apparatus therefor.

The unidirectional carbon fiber prepreg is a high performance composite material with light weight, high strength and high durability. The manufacturing method of the prepreg comprises a powder impregnation method, a solution impregnation method or a melt impregnation method, etc., mainly after the carbon fiber yarn bundle spread is spread into a sheet shape, and a thermoplastic or thermosetting resin is attached to the carbon fiber yarn bundle. In the above, the resin is impregnated between the carbon fibers, and then cooled or dried to become a unidirectional carbon fiber prepreg.

However, the concept of the existing unidirectional carbon fiber prepreg process is not complicated, but there are many technical problems to be overcome in actual operation, such as:

1. Uniformity of carbon fiber yarn: The carbon fiber yarn bundle is composed of a plurality of extremely fine carbon fibers. When the yarn is stretched, the carbon fibers are easily twisted, overlapped or even broken due to the uneven force of the yarn stretching device, resulting in an exhibition. The unevenness of the yarn affects the effect of the subsequent impregnation of the resin, so that the prepreg forms pores and produces a flaw in the product. Furthermore, the carbon fiber of a single yarn bundle has a difficult yarn to be stretched. If a plurality of carbon fibers are to be simultaneously stretched, it is necessary to further overcome the uniformity and overlap state of the abutment arrangement between the carbon fiber yarn bundles after each yarn stretching.

2. The problem of easy yarn breakage caused by the tension accumulation in the continuous process: in the continuous process of carbon fiber prepreg, each mechanism may generate tension on the carbon fiber yarn bundle, and excessive tension may be caused. Carbon fiber breaks, affecting the mechanical properties and aesthetics of the finished product.

3. At present, the resin used in the impregnation method is a thermosetting resin, because the thermosetting resin can be dissolved in a solvent to form a highly fluid material, and even if the effect of the carbon fiber yarn bundle is not good, the effect of impregnating each fiber can be easily achieved, but the thermosetting resin The disadvantage is that it cannot be reprocessed after molding, and it cannot be recycled. The thermoplastic resin has secondary processing and better recovery. Although it can be heated and melted to form flow dynamics, the impregnation method is used to process the impregnation, but even in the molten state. Thermoplastic resins, which are still inferior in fluidity, often have problems such as poor impregnation, dry yarn, chaotic yarn, and discontinuous yarn arrangement (Gap).

In order to solve the above problems of the above-mentioned carbon fiber prepreg process, it is not easy to solve various problems, the present invention provides a molding apparatus for an extremely thin thermoplastic fiber reinforced composite material, which is used for expanding a plurality of yarn bundles into a very thin thermoplastic fiber reinforced composite material. The utility model comprises: a yarn spreading fabric module, comprising: a accommodating groove, a plurality of yarn guiding guides and a plurality of air inlet holes, wherein the plurality of yarn guiding rods are arranged on the groove wall of the accommodating groove, and the The plurality of yarn bundles are respectively unfolded into a plurality of fiber yarns and are continuously arranged. The air inlet holes are disposed at the bottom of the receiving groove, and a gas flow is introduced into the receiving groove, the air flow is a thermoplastic rubber powder. Uniformly distributed on the fiber yarn; a heat pressing module disposed adjacent to the yarn forming fabric module and comprising a heatable one rolling mechanism, the rolling mechanism being unfolded into a plurality of fiber yarns The yarn bundle is pressured in its radial direction such that a plurality of the yarn bundles form the extremely thin thermoplastic fiber reinforced composite material; and the yarn woven fabric module includes a bundle of aligning devices before and/or after.

Wherein, the whole beam aligning device is a multi-groove beam splicing mechanism, the multi-groove splicing mechanism comprises a roller, and the roller surface is provided with a plurality of convex portions and concave portions.

Wherein, the whole beam arranging device is a multi-groove splicing mechanism, and the multi-groove splicing mechanism comprises two rollers, and the two roller surfaces are respectively provided with a plurality of convex portions and concave portions corresponding to each other.

Wherein, the whole beam aligning device comprises an adjustable needle comb group and a roller set, The adjustable needle comb group has a plurality of vertically set needle combs arranged in an adjustable form; and the roller set comprises two rollers corresponding to each other and having a flat surface.

Further, the hot pressing module is a double steel strip hot press or a heated pressurizing drum.

Further, a yarn tension control module is disposed in front of the yarn spreading fabric module, and includes a plurality of tension control brackets respectively for monitoring and controlling the tension of the plurality of yarn bundles.

Further, a yarn bundle processing module is disposed in front of and/or behind the yarn forming fabric module, and the yarn bundle processing module comprises a hot air, an electric hot plate, an electric heating tube or an infrared light tube.

The present invention provides a molding process corresponding to the foregoing apparatus, and the method includes: providing a force to the plurality of yarn bundles and advancing the plurality of yarn bundles in the same direction; and expanding the plurality of yarns by friction force control, tension adjustment and airflow impact mode And expanding the plurality of the yarn bundles into a plurality of fiber yarns in a horizontal direction, wherein the air flow distributes a thermoplastic rubber powder on the surface of the plurality of yarn bundles, and the friction force is applied to the plurality of yarn bundles Forming an electrostatic charge on the surface to adsorb the thermoplastic size powder; arranging the plurality of yarn bundles at intervals before and/or after unfolding the plurality of yarn bundles by using a whole beam aligning device; and applying the plurality of yarn bundles to a heat The pressure module is heated and pressurized into a very thin thermoplastic fiber reinforced composite material.

Wherein, the resin-to-fiber ratio contained in the ultra-thin thermoplastic fiber reinforced composite material is controlled by adjusting the entire aligning device and the gap of the hot-pressing module.

Further, the plurality of yarn bundles are heat treated before and/or after the plurality of yarn bundles are unfolded.

As can be seen from the above description, the present invention has the following advantages:

1. The yarn-expanding method provided by the invention can improve the problem that the yarn of the single-direction carbon fiber prepreg is not easy to be exhibited, and the multi-beam carbon fiber yarn bundle can also exhibit good yarn, and the yarn-expanding effect is at least 10 times or more, and the subsequent improvement is improved. The prepreg obtained is impregnated, so that the thermoplastic melt powder after heat fusion has good fiber-bonding property, reduces pores, improves mechanical strength, and reduces product defects.

2. The invention is provided with a tension adjustable yarn tension control module, which can improve the continuous system. The problem of tension accumulation in the process reduces the formation of yarn breakage, and the yield and aesthetics of the finished product can be improved.

3. Due to the yarn-drawing method provided by the present invention, a plurality of yarn bundles are well-distributed and averaged, and then a thermoplastic rubber material is distributed thereon by means of air distribution, and a very thin film can be obtained after being pressed. Prepreg sheets are highly improved in processability, aesthetics and applicability.

4. The invention achieves the effect of multiple yarns on the average yarn by the tension and friction in the process and the distance between the plurality of yarn bundles, and successfully uses the airflow and static charge adsorption method to successfully melt the thermoplastic powder. The body is evenly attached to the surface of the yarn bundle to control the effect and thickness of the yarn, and a high quality sheet material can be obtained.

The invention improves the defects that the general impregnation system cannot use the thermoplastic resin through the combination of the yarn-distributing fabric module, the whole beam arranging device and the hot-pressing module, and the yarn bundle is unfolded and uniformly distributed through the adjustment of the yarn-drawing fabric in the process. The successful introduction of thermoplastic resin with secondary molding characteristics and better recovery into the impregnation molding system is a breakthrough in the field and conforms to the trend of green environmental protection process.

10‧‧‧ yarn bundle

20‧‧‧ yarn bundle tension control module

21‧‧‧ creel

22‧‧‧Tensile control bracket

30‧‧‧Porous whole bundle

31‧‧‧ plates

32‧‧‧ yarn guide

40‧‧‧ yarn bundle processing module

50‧‧‧Adjustable needle comb group

51‧‧・Needle comb

70‧‧‧Exhibit yarn fabric module

71‧‧‧ accommodating slots

73‧‧‧ yarn guides

74‧‧‧Multiwell plate

75‧‧‧Air intake

77‧‧‧ Ventilation channel

91‧‧‧Upper scroll wheel

93‧‧‧Down roller

94‧‧‧ convex

95‧‧‧ recess

100‧‧‧Hot pressure module

110‧‧‧ Winding device

A‧‧‧ airflow

H‧‧‧thermoplastic rubber powder

S‧‧‧ Very thin thermoplastic fiber reinforced composite

X‧‧‧ Whole beam alignment device

1a, 1b are schematic views of a preferred embodiment of a very thin thermoplastic fiber reinforced composite material forming apparatus of the present invention.

2a and 2b are schematic views of a preferred embodiment of a spreader fabric module of the present invention.

3 is a schematic view of a first preferred embodiment of the entire beam alignment device of the present invention.

4 is a schematic view showing a third preferred embodiment of the entire beam aligning device of the present invention.

Figure 5 is a schematic view of a preferred embodiment of a porous bundle assembly of the present invention.

Figure 6 is a flow chart showing the forming process of the ultra-thin thermoplastic fiber reinforced composite material of the present invention.

The so-called ultra-thin thermoplastic fiber reinforced composite material of the present invention is mainly a prepreg composite sheet. The material or composite sheet, the material comprises carbon fiber, glass fiber, etc., and the fiber suitable for the molding process does not exceed the scope of the invention.

Referring to FIG. 1a, a molding apparatus for an ultra-thin thermoplastic fiber reinforced composite material according to the present invention, the first preferred embodiment includes at least a yarn forming fabric module 70 and a heat pressing module 100. A whole array of alignment devices X is provided in front of and/or behind the spreader fabric module 70.

Referring to FIG. 1b, another embodiment of the present invention is further provided by the yarn spreading fabric module 70, the hot pressing module 100, and the whole beam arranging device X device of the first preferred embodiment. A yarn bundle tension control module 20 is disposed in front of the yarn forming fabric module 70, or a yarn bundle processing module 40 is disposed in front of and/or behind the yarn forming fabric module 70, and the hot pressing module can also be disposed in the hot pressing module. A winding device 110 is disposed 100 to enhance the effect of the yarn bundle stretching yarn and the thermoplastic resin impregnation of the present invention.

The ultra-thin thermoplastic fiber-reinforced composite material S manufacturing apparatus of the present invention is a continuous process equipment, and the arrangement and use manner of the foregoing modules or devices are respectively described below.

Referring to FIG. 1b, the yarn tension control module 20 includes a creel 21 and a plurality of tension control brackets 22. The tension control bracket 22 is disposed on the creel 21, and the tension control bracket 22 is provided with a yarn. The bundle 10 has the function of monitoring and controlling the tension of the yarn bundle; in a preferred embodiment, the yarn bundle 10 is first wound on a bobbin, which is a hollow column type and can be tightly closed. Nested on the tension control bracket 22 and interlocked therewith, so that the bobbin wound with the yarn bundle 10 has the effect of adjusting the tension of the yarn bundle 10 according to the degree of resistance given by the tension control bracket 22; The yarn bundle 10 is composed of a plurality of fiber yarns. The yarn bundle 10 used in the present embodiment is a carbon fiber yarn bundle, but other yarn bundles which can be made into a sheet material can also be used, such as a glass fiber yarn bundle; preferably The tension control bracket 22 provides a tension monitoring method for setting the tension sensor, and the tension control manner is that the tension control bracket 22 is provided with an electric motor, and the tension control bracket 22 is automatically rotated by the electric motor and the yarn is linked. Tube to increase or decrease The degree of tightening or roll beam 10 put sheets, tension control to achieve the effect, in addition to the motor control, may manually adjust the tension, is not limited thereto. The yarn tension control module 20 requires tension The main function of the control is that the angle at which the yarn bundle 10 enters the subsequent process is different, and the tension difference is caused. At this time, the yarn tension control module 20 can adjust the plurality of the yarn bundles 10 correspondingly. The degree of tension is uniform and uniform, so that each fiber yarn in the yarn bundle 10 is unfolded to obtain a relatively uniform yarn-drawing effect, but the yarn bundle tension control module 20 of the present invention is provided by using the present invention. In the case of the device, the need to adjust the tension of the yarn bundle may be correspondingly set, and the device device not limited to the invention must include the yarn tension control module 20.

Referring to FIG. 2a to FIG. 2b, the yarn forming fabric module 70 of the present invention is provided with a receiving groove 71, a plurality of yarn guiding guides 73 and a plurality of air inlet holes 75, and a plurality of the yarn guiding rods 73 are disposed. The air inlet hole 75 is disposed in the groove bottom of the accommodating groove 71. The accommodating groove 71 is filled with a thermoplastic rubber powder H.

Referring to FIG. 2b, the air inlet hole 75 of the embodiment preferably has a perforated plate 74 disposed at a position higher than the bottom of the receiving groove 71 but lower than the yarn guiding guide 73. The plate 74 is provided with a plurality of the air inlet holes 75. The air inlet holes 75 are smaller in size than the thermoplastic rubber powder H, so that the thermoplastic rubber powder H can be carried above the porous plate 74. The bottom of the groove 71 is provided with a ventilation passage 77. After the airflow A is introduced from the ventilation passage 77, the thermoplastic rubber powder H is driven through the air inlet hole 75 to form a rolling effect like a water flow, so that the yarn passes. The bundle 10 can uniformly coat the thermoplastic gum powder H.

The yarn forming fabric module 70 mainly provides the function of the yarn and the cloth. The mechanism of the yarn is mainly two. When the yarn bundle 10 is passed through the yarn guiding rod 73, the yarn guiding rod 73 is used. The frictional force and tension generated between the yarns are achieved: the second is to use the airflow A provided by the air inlet hole 75 to scatter the thermoplastic rubber powder H in the accommodating groove 71, through the airflow A and the thermoplastic The size powder H impacts the yarn bundle 10, causing the yarn bundle 10 to be stretched, and the frictional force and tension with the yarn guide 73 are made such that the yarn bundle 10 is more developed. Further, the present invention can also achieve the effect of increasing or decreasing the tension of the yarn bundle 10 by the position, the angle, the diameter and the number of the guide rods disposed in the receiving groove 71 of the yarn guiding guide 73, which helps to adjust the tension. The yarn spread of the yarn bundle 10.

The mechanism of the yarn distribution fabric module 70 is that the yarn bundle 10 generates a surface electrostatic charge due to the friction with the yarn guiding guide 73, and the static charge can make the thermoplastic rubber compound. The powder H is adsorbed on the surface of the yarn bundle 10 to complete the cloth process.

The advantage of the spread fabric module 70 of the present invention is that the yarn bundle 10 can be simultaneously stretched and the thermoplastic rubber powder H is pre-dispersed between the fibers of the yarn bundle 10 to improve subsequent thermoforming. Impregnation, reaching or close to the effect of the existing thermosetting resin process; and the thermoplastic rubber powder H can be evenly distributed to the yarn bundle 10, and can overcome the uneven thickness, resin in the subsequent hot press forming into a thin sheet material Uneven distribution, dry yarn (no resin), discontinuous or broken yarn or yarn bundle arrangement, etc.

Then, the yarn bundle 10 passes through the yarn fabric module 70 and enters the hot pressing module 100. It preferably comprises a heatable rolling mechanism for rotating the yarn bundle 10 in the radial direction. The pressure is applied to the ultra-thin thermoplastic fiber reinforced composite material S. The hot-pressing module 100 used in this embodiment is a double-belt hot press or a heated press roller.

Referring to FIG. 3, the whole arrangement device X may be disposed in front of and/or after the yarn forming fabric module 70. The first embodiment of the whole beam aligning device X is a multi-groove beam splicing mechanism. The upper roller 91 and the lower roller 93 are provided with a plurality of convex portions 94 and concave portions 95 corresponding to the surface of the lower roller 93. The convex portion 94 and the concave portion 95 limit the yarn bundle 10. The problem of reducing the inversion or folding of the yarn bundle 10 also averages the total width of the yarn bundle of the yarn bundle 10 and the yarn bundle spacing.

Through the plurality of convex portions 94 and the concave portions 95 of the entire alignment device X, the yarn bundles 10 can be aligned and adjusted according to the extremely thin thermoplastic fiber reinforced composite material S to be formed (Resin content, RC %), Fiber Areal Weight (FAW (g/m ² )), width, etc., and control the spacing and alignment uniformity of the fiber yarns.

The above-mentioned manner of adjusting the resin content (Resin content, RC ratio, RC %) and the fiber area per unit area (Fiber Areal Weight, FAW (g/m2)) can be transmitted through the thermoplastic rubber powder on the yarn bundle 10, for example. H distribution amount control and pressing gap control of the hot pressing module 100 (excess resin can be squeezed out) And controlling the thickness), the effect of controlling the ratio of the thermoplastic rubber powder H to the yarn bundle 10 and the thickness of the sheet can be achieved; or the pressing ratio of the hot pressing module 100 can be fixed at the rear (ie, the pole When the thickness of the thin thermoplastic fiber-reinforced composite material S is fixed, the number of the yarn bundles 10 is increased in each of the convex portions 94 and the concave portions 95 of the upper roller 91 and the lower roller 93, so that the extremely thin thermoplastic which is subsequently formed can be formed. The fiber-reinforced composite S fiber yarn content is increased, and the RC ratio is significantly decreased; conversely, reducing the yarn bundle 10 in each convex portion 94 and the concave portion 95 can increase the RC ratio and control the fiber weight per unit area (FAW). effect.

The multi-groove bunching mechanism of the whole beam arranging device X is an embodiment of the upper and lower double roller type, and the advantage is that the limit effect formed by the top roller 91 and the lower roller 93 is directly penetrated. The yarn bundle 10 from the second heating unit 80 is still maintained in the original horizontal plane for processing, avoiding the device from generating additional tension on the yarn bundle 10, and reducing the continuous process tension accumulation to cause the yarn bundle 10 to break. .

The whole beam aligning device X is in the form of a double roller, and the second embodiment may also be in the form of a single roller. The so-called single roller form is substantially the same as the above-described double roller, but only the upper roller 91 or the lower roller 93 is used alone. The yarn bundle 10 is arranged in a positional arrangement, but in this case, in order to prevent the yarn bundle 10 from being maintained in the recess 95, at least the recess 95 of the single roller is disposed at a position higher or lower than the front end. The original horizontal position of the yarn bundle 10 is such that the yarn bundle 10 can be placed in the recess 95 and bundled for the purpose of being angled from the original horizontal position. In addition, the pitch of the yarn bundle 10 can be adjusted by replacing a roller set having different width dimensions of the convex portion 94.

The third embodiment of the whole beam aligning device X comprises an adjustable needle comb set 50 and a flat roller set. As shown in FIG. 4, the adjustable needle comb set 50 includes a plurality of roots perpendicular to the horizontal direction of the yarn bundle 10. The needle combs 51 are preferably arranged in a zigzag (or W-shaped) manner, and the spacing distance of the needle combs 51 can be adjusted so that the interval of the yarn bundles 10 can be increased or decreased according to requirements. It is avoided that the plurality of the yarn bundles 10 are arranged too close to each other and are pressed against each other to affect the yarn-hanging effect. Preferably, the leveling roller set includes two rollers corresponding to each other and having a flat surface, and is received from the adjustable needle comb group 50. The yarn bundle 10, as the yarn bundle 10 passes through the adjustable needle comb group 50, may cause the fiber to be folded and folded due to the contact friction. Therefore, the yarn bundle 10 can be flattened by subsequently setting the flat roller group. Trimming to achieve a flat surface effect.

In addition, the main purpose of the whole beam aligning device X of the present embodiment is to arrange the yarn bundles 10 at an average interval, and the yarn bundles 10 are kept at an appropriate interval by the whole beam aligning device to avoid mutual squeezing and affecting the yarn stretching, or It is avoided that the yarn bundle 10 is too separated to cause gap or breakage of the subsequent sheet product, and the width of the stretched yarn has a positive relationship with the amount of the thermoplastic rubber powder H, and the equidistant spacing of the yarn bundle 10 is uniform. Spreading the yarn contributes to the degree of impregnation of the bundle 10. In addition to the configuration of the three different whole beam aligning devices as described above, the entire aligning device X can be adjusted in accordance with the characteristics of each of the whole aligning device X embodiments or the yarn forming requirements of the yarn bundle 10. The type of use, using three sets of the entire beam aligning device, enables each of the plurality of yarn bundles 10 to achieve an optimum yarn spreading effect.

Further, the present invention can also be disposed in front of and/or after the yarn forming fabric module 70. The first preferred embodiment is disposed in front of the yarn forming fabric module 70. The main purpose of the yarn bundle processing module 40 is to remove the slurry and moisture from the surface of the yarn bundle 10 for subsequent use in the fabric process. Since the surface of the commercially available carbon fiber contains a slurry, if the yarn is directly stretched, the yarn bundle 10 is easily adhered, so that the yarn bundle 10 is not easily unfolded, thereby affecting the uniformity and thickness of the fiber yarn after the yarn is stretched. For example, the yarn bundle processing module 40 is disposed in front of the yarn forming fabric module 70 to remove the slurry and moisture on the surface of the yarn bundle 10, thereby avoiding the effect of the surface slurry on the yarn spreading effect. The yarn bundle processing module 40 can be, but is not limited to, a hot air, a hot plate, an electric heating tube or an infrared tube (IR tube).

The second preferred embodiment of the yarn bundle processing module 40 is disposed behind the yarn spreading fabric module 70. The main purpose is to avoid the thermoplastic rubber powder H attached to the surface of the yarn bundle 10 in subsequent processes. The temperature is lowered by the yarn bundle processing module 40, and the heating temperature is preferably heated in a short time higher than the melting temperature of the thermoplastic rubber powder H, so that the thermoplastic rubber powder H can be temporarily attached. On the surface of the yarn bundle 10, the thermoplastic rubber powder H can also be pre-melted between the fibers of the yarn bundle 10, By heating at this time, the over-expanded yarn bundle can be reduced to the required width.

In addition, the present invention may also arrange the yarn bundles 10 by a porous bundle group 30 before the yarn bundle 10 enters the yarn-laid fabric module 70. As shown in FIG. 5, the porous bundle group 30 A plate 31 and a plurality of yarn guiding ports 32 spaced apart therefrom are passed through the plurality of yarn bundles 10 from the yarn guiding opening 32, and are different depending on the yarn tension control module 20 The yarn bundles 10 in the direction or horizontal position are gathered and regularly arranged and advanced in the same direction to facilitate the implementation of the subsequent yarn forming process. The peripheral wall of the yarn guiding port 32 is preferably made of a wear-resistant material having a smooth surface, such as a porcelain eye, a Teflon material or the like, which is resistant to the yarn bundle 10 and also prevents the yarn bundle 10 from being broken.

The first way in which the yarn guiding ports 32 are spaced apart is that the two yarn guiding ports 32 are a group, and the plurality of groups are closely and regularly arranged in the manner of the upper left upper right or the lower right upper left, and the second mode is a plurality of guides. The yarn feeders 32 are equidistant and disposed on the same horizontal surface, and the yarn bundles 10 are gathered and regularly arranged and advanced in the same direction. The present invention is not limited thereto.

Finally, the winding device 110 is disposed after the hot pressing module 100 to wind the ultra-thin thermoplastic fiber reinforcing composite material S for subsequent transportation or processing.

The present invention corresponds to a molding apparatus for the aforementioned ultra-thin thermoplastic fiber-reinforced composite material S, and a method for exhibiting the yarn and the cloth is provided below.

Please refer to FIG. 1 and FIG. 6 , which are preferred embodiments of the yarn stretching method of the present invention, the steps of which include: Step S1: providing a force to a plurality of yarn bundles, and arranging the plurality of yarn bundles in the same direction Step S2: deploying the plurality of yarn bundles by friction force control, tension adjustment and airflow impact mode, so that the plurality of yarn bundles are respectively expanded into a plurality of fiber yarns in a horizontal direction, and the air flow is a thermoplastic rubber compound The powder is distributed on the surface of the plurality of yarn bundles, and the friction force generates an electrostatic charge on the surface of the plurality of yarn bundles to adsorb the thermoplastic rubber powder; Step S3: heating and pressing the plurality of yarn bundles into a very thin thermoplastic fiber reinforced composite material.

It can be seen from the foregoing description that the present invention achieves the effect of multiple yarns 10 on average by the tension and friction in the process and the distance between the yarn bundles 10, and successfully uses the airflow and electrostatic charge adsorption methods. The thermoplastic rubber powder H is uniformly attached to the surface of the yarn bundle 10 to facilitate the quality of the subsequently formed sheet.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the scope of the claims of the present invention. Any equivalent changes or modifications which are not disclosed in the spirit of the present invention should be included in the present invention. Within the scope of the patent application of the invention.

Claims (9)

An ultra-thin thermoplastic fiber reinforced composite material forming device for expanding a plurality of yarn bundles into a very thin thermoplastic fiber reinforced composite material, comprising: a yarn-drawing fabric module comprising a receiving groove and a plurality of roots a plurality of yarn guiding rods are disposed on the groove wall of the accommodating groove, and the plurality of yarn bundles are respectively unfolded into a plurality of fiber yarns and continuously arranged, the air inlet holes are arranged Provided in the bottom of the accommodating groove, and a gas flow into the accommodating groove, the air flow uniformly distributes a thermoplastic rubber powder on the fiber yarn; a heat pressing module adjacent to the exhibition a gauze fabric module, the hot press module is a double steel strip hot press or a heated pressurizing drum, and the hot press module applies pressure to the yarn bundle of the plurality of fiber yarns in a radial direction thereof And forming a plurality of the bundles to form the ultra-thin thermoplastic fiber-reinforced composite material; and the bundle of aligning devices is included before and/or after the yarn-laid fabric module. The forming apparatus of the ultra-thin thermoplastic fiber reinforced composite material according to the first aspect of the patent application, wherein the whole beam arranging device is a multi-groove splicing mechanism, the multi-groove splicing mechanism comprises a roller, and the roller surface is provided with a plurality of Protrusions and recesses. The forming apparatus of the ultra-thin thermoplastic fiber reinforced composite material according to the first aspect of the patent application, wherein the whole beam arranging device is a multi-groove splicing mechanism, the multi-groove splicing mechanism comprises two rollers, and the two roller surfaces are provided a plurality of convex portions and concave portions corresponding to each other. The apparatus for molding a very thin thermoplastic fiber reinforced composite material according to claim 1 , wherein the whole aligning device comprises an adjustable needle comb group and a roller set, wherein: the adjustable needle comb group has a plurality of vertical sets a needle comb, the needle combs are arranged in an adjustable form; and the roller set comprises two rollers that are disposed corresponding to each other and have a flat surface. For example, in the molding apparatus of the extremely thin thermoplastic fiber reinforced composite material of the patent scope 1, 2, 3 or 4, a yarn bundle tension control module is disposed in front of the yarn forming fabric module, and includes a plurality of tension control brackets. The tension control bracket monitors and controls the tension of the plurality of yarn bundles, respectively. A molding apparatus for an extremely thin thermoplastic fiber reinforced composite material according to claim 1, 2, 3 or 4, wherein a yarn bundle processing module is disposed before and/or after the yarn forming fabric module, the yarn bundle processing module The group contains hot air, electric hot plates, electric heating tubes or infrared tubes. A forming process for an extremely thin thermoplastic fiber reinforced composite material, the method comprising: providing a force to a plurality of yarn bundles and advancing the plurality of yarn bundles in the same direction; utilizing friction force control, tension adjustment and air flow impact mode a plurality of yarn bundles, wherein the plurality of yarn bundles are respectively expanded in a horizontal direction into a plurality of fiber yarns, and the air flow distributes a thermoplastic rubber powder on the surface of the plurality of yarn bundles, and the friction force is An electrostatic charge is generated on the surface of the yarn bundle to adsorb the thermoplastic rubber powder; the plurality of yarn bundles are arranged at intervals before and/or after the plurality of yarn bundles are unwound by a whole beam aligning device; and the plurality of yarn bundles are arranged It is heated and pressurized by a hot pressing module into a very thin thermoplastic fiber reinforced composite material. For example, in the molding process of the extremely thin thermoplastic fiber reinforced composite material of the seventh application patent, the ratio of the resin to the fiber contained in the extremely thin thermoplastic fiber reinforced composite material is controlled by adjusting the entire aligning device and the gap of the hot pressing module. The forming process of the ultra-thin thermoplastic fiber-reinforced composite material according to claim 7 of the patent application, wherein the plurality of yarn bundles are heat-treated before and/or after the plurality of yarn bundles are unfolded.