KR102684781B1 - Tow prepreg manufacturing equipment for evaluation test specimen - Google Patents

Abstract

The present invention relates to a tow prepreg manufacturing device for physical property evaluation specimens, which is formed in plural pieces, each of which is provided with a tow prepreg wound, and which adjusts the tension applied to the tow prepreg when the tow prepreg is unwound. A mounting portion provided with a tension adjustment device; a plying unit that unites the plurality of tow prepregs transferred from the mounting unit into one tow prepreg; It is formed in the form of a roller, has a shape fixing part equipped with a cooling function to fix the shape of the tow prepreg transferred from the plying part, and is formed in the form of a plate having a thickness, and is provided with a mold having a rotation axis penetrating through the center. Thus, it is possible to provide a tow prepreg manufacturing device for physical property evaluation specimens including a specimen forming unit where the tow prepreg transferred from the shape fixing unit is wound into the mold.

Description

Tow prepreg manufacturing equipment for evaluation test specimen}

The present invention relates to a device for manufacturing tow prepregs for physical property evaluation specimens. More specifically, the present invention relates to a device for manufacturing tow prepregs for physical property evaluation specimens, and more specifically, to manufacture specimens by minimizing the occurrence of twisting and single yarns in fibers through a plying unit that gradually reduces the gap between tow prepregs incident from the mounting unit. This relates to a tow prepreg manufacturing device for physical property evaluation specimens capable of speed and uniform molding.

Fiber-reinforced composite materials are manufactured by impregnating reinforcing materials such as carbon fiber or aramid fiber with a resin such as epoxy, which is a base material. Fiber-reinforced composites have high specific strength and specific elastic modulus. For this reason, it is used as an industrial structural material for aircraft and automobiles. In addition, it is also used as a material for everyday products such as sporting goods such as tennis rackets, golf shafts, and fishing rods.

Tow prepreg is a type of prepreg, a representative composite material intermediate substrate, and is a B-stage molding material made by pre-impregnating reinforcing fibers with resin, which is the base material.

Unlike typical prepregs, it is a form of resin impregnated with a unidirectional single strand of reinforcing fiber rather than in the form of a sheet of unidirectional continuous fibers or a continuous fiber fabric, and is heated and pressed after being laminated in a mold according to the required design standards. and mold the product.

In addition, tow prepreg is a necessary material for everything from high-performance rocket motor cases to high-performance commercial pressure vessels, and pressure vessel design must meet various technical requirements and is located near people, so safety is an important design factor.

In order to design a design that satisfies these requirements and considerations, it is important to evaluate the physical properties of tow prepreg specimens.

Conventionally, in order to produce physical property evaluation specimens, materials were wound around a reel-shaped fixture and cured at high temperatures to form them. However, during the curing process, the resin whose viscosity was lowered caused slippage between the specimen and the fixture, or the fixing part loosened and the tension could not be maintained, causing the specimen to be molded. This resulted in major consequences in which the property evaluation was not carried out smoothly.

To improve this, we improved the fixing part to optimize the tension applied when mounting the specimen, as in the improved domestic patent KR102108653, but since it is an improvement method based on manual work, it is difficult to visually check the twist of the fiber for small toe of 3K or less. When manufacturing specimens using , the uniformity of the specimen decreases, and the smaller the fiber bundle is, the higher the single yarn rate due to the applied tension occurs.

Therefore, in order to solve the above problems, the present invention minimizes the occurrence of twisting and single yarns in the fiber through a ply yarn part that gradually reduces the gap between the tow prepregs incident from the mounting part, and enables specimen production speed and uniform molding. The purpose is to provide a tow prepreg manufacturing device for physical property evaluation specimens.

In order to solve the above problems, the tow prepreg manufacturing device for physical property evaluation specimens according to an embodiment of the present invention is formed in a plurality of tow prepregs for physical property evaluation specimens, each of which is wound with a tow prepreg. A mounting portion provided with a tension adjustment device that adjusts the tension applied to the tow prepreg when the tow prepreg is released; a plying unit that unites the plurality of tow prepregs transferred from the mounting unit into one tow prepreg; It is formed in the form of a roller, has a shape fixing part equipped with a cooling function to fix the shape of the tow prepreg transferred from the plying part, and is formed in the form of a plate having a thickness, and is provided with a mold having a rotation axis passing through the center. Thus, the tow prepreg transferred from the shape fixing part may include a specimen forming part where the tow prepreg is wound around the mold.

In addition, the tow prepreg is characterized as a small tow prepreg having a filament number of 1,000 to 24,000.

In addition, the plying unit is formed with a plurality of plying members provided in the front-back direction and a length in the front-back direction to reduce the gap between the plurality of tow prepregs transferred from the mounting unit, and is equipped with a temperature control device. It may include a heating unit that heats and unifies the tow prepreg transferred from the plying member.

In addition, the plying member has one or more spacing grooves or spacing protrusions arranged laterally on the upper surface, and as it is positioned from the front to the rear, the spacing between the spacing grooves or spacing protrusions gradually narrows and is located at the rearmost position. In this case, it is characterized in that one spaced groove or two spaced protrusions are formed.

In addition, the plying member includes: a first plying member located on the front side and having a plurality of first spacing grooves spaced apart from each other laterally on the upper surface; a second plying member positioned at a predetermined distance rearward from the first plying member and having a plurality of second spacing grooves formed laterally on the upper surface to have a spacing narrower than that of the first spacing groove; It is located at a certain distance rearward from the second plying member, and is spaced at a certain distance rearward from the third plying member and the third plying member formed by a plurality of third spacing grooves in contact with each other laterally on the upper surface. , including a fourth plying member having a fourth spacing groove formed in the center of the upper surface, wherein the tow prepreg transferred from the mounting portion is divided into the first spacing groove, the second spacing groove, the third spacing groove, and the fourth spacing. It is characterized in that it moves along the groove and becomes unified in the fourth interval groove.

In addition, the heating part is formed to have a length in the front-back direction, and is characterized in that a heating groove is formed along the longitudinal direction in the center.

In addition, the specimen forming part further includes a cover part for protecting the tow prepreg wound around the mold, and the cover part is formed in a plate shape and is provided as a pair, so that at least one of the upper and lower surfaces of the mold It is characterized in that it is located in and protects the tow prepreg.

According to the present invention, the tow prepreg manufacturing device for physical property evaluation specimens minimizes the occurrence of twisting and single yarns in fibers through a ply yarn part that gradually reduces the gap between tow prepregs incident from the mounting part, and improves specimen production speed and uniform molding. There are possible advantages.

In addition, it is possible to produce laminated specimens with verified reproducibility that maintain precise tension and constant spacing compared to existing hand-made specimens.

In addition, it is possible to manufacture plate-type specimens in addition to single-fiber tensile specimens by overlapping tow prepregs, and it can be used in the production of all tow prepreg specimens, such as small tow and large tow.

Figure 1 is an exemplary process diagram of a tow prepreg manufacturing apparatus for physical property evaluation specimens according to an embodiment of the present invention.
Figure 2 is an exemplary process diagram showing the tow prepreg applied to Figure 1.
Figure 3 is an example diagram showing how the spacing distance between the grooves of the plying member of Figure 1 is gradually reduced according to the plying direction of the tow prepreg.
Figures 4 (a) to (d) are front views of the first to fourth plying members of Figure 3.
Figure 5 is a perspective view showing the spacing protrusions formed on the plying member so that the tow prepreg in FIG. 1 is gradually bonded.
Figures 6 (a) and (b) are perspective views showing different examples of the heating unit of Figure 1.
Figure 7 is a perspective view showing the mold of the specimen forming part of Figure 1.
Figure 8 is a perspective view showing a cover portion formed in a mold in which the tow prepreg of Figure 7 is wound.
Figure 9 is a perspective view showing a cover part including a fixing member formed in a mold in which the tow prepreg of Figure 8 is wound.
The left photo in Figure 10 is a photo of the initial tow prepreg, and the right photo is a photo of the initial tow prepreg for a specimen manufactured through the tow prepreg production device for physical property evaluation specimens according to an embodiment of the present invention.

Hereinafter, the description of the present invention with reference to the drawings is not limited to specific embodiments, and various changes may be made and various embodiments may be possible. In addition, the content described below should be understood to include all conversions, equivalents, and substitutes included in the spirit and technical scope of the present invention.

In the following description, the terms first, second, etc. are terms used to describe various components, and their meaning is not limited, and is used only for the purpose of distinguishing one component from other components.

Like reference numerals used throughout this specification refer to like elements.

As used herein, singular expressions include plural expressions, unless the context clearly dictates otherwise. In addition, terms such as “comprise,” “provide,” or “have” used below are intended to designate the presence of features, numbers, steps, operations, components, parts, or a combination thereof described in the specification. It should be construed and understood as not precluding the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

Hereinafter, the tow prepreg manufacturing apparatus for physical property evaluation specimens according to a preferred embodiment of the present invention will be described in detail with reference to the attached FIGS. 1 to 10.

Figure 1 is an exemplary process diagram of a tow prepreg manufacturing device for physical property evaluation specimens according to an embodiment of the present invention, Figure 2 is an exemplary process diagram showing the tow prepreg applied to Figure 1, and Figure 3 is an exemplary process diagram showing the application of the tow prepreg to Figure 1. It is an example diagram showing how the spacing between the spacing grooves of the plying member gradually decreases according to the plying direction of the tow prepreg, and (a) to (d) of Figure 4 show the first to second plying members of Figure 3. 4 is a front view of the plying member, and FIG. 5 is a perspective view showing the spacing protrusions formed on the plying member so that the tow prepreg is gradually plyed in FIG. 1, and (a) and (b) of FIG. 6 are the heating of FIG. 1. It is a perspective view showing different examples of the parts, Figure 7 is a perspective view showing the mold of the specimen forming part of Figure 1, Figure 8 is a perspective view showing the cover part formed in the mold in which the tow prepreg of Figure 7 is wound, Figure 9 is a perspective view showing a cover part including a fixing member formed in the mold in which the tow prepreg of Figure 8 is wound, the left picture of Figure 10 is a picture of the initial tow prepreg, and the right picture is the initial tow prepreg. This is a photograph of a tow prepreg for a specimen produced through a tow prepreg production device for a physical property evaluation specimen according to an embodiment of the present invention.

Referring to Figures 1 and 2, the tow prepreg manufacturing device for physical property evaluation specimens according to an embodiment of the present invention includes a mounting portion (10), a plying portion (20), a shape fixing portion (30), and a specimen forming portion (40). It can be included.

Before explaining each configuration, the tow prepreg manufacturing device for physical property evaluation specimens according to an embodiment of the present invention is applied to all fiber bundle groups composed of various numbers of filaments such as small tow prepreg and large tow prepreg. Leg specimens can be produced. At this time, it is most desirable for the tow prepreg production device for the physical property evaluation specimen to produce the tow prepreg for the specimen using small tow prepreg with a filament number of 1,000 to 24,000, but it is not limited to this.

First, the mounting portion 10 is formed in the form of a roller and is provided in a state in which the tow prepreg (P) is wound, and may be provided in plural pieces depending on the number of tow prepregs (P) to be twisted.

Additionally, the mounting portion 10 may be provided with a tension adjustment device to adjust the tension applied to the tow prepreg (P) when the tow prepreg (P) is released from the mounting portion (10). At this time, the tension control device can be any device that is typically formed on a roller and used to control tension when the fibers wound around the roller are unwound, but is not limited to this.

The plying unit 20 unifies the plurality of tow prepregs (P) transferred from the mounting unit 10 into one tow prepreg (P), and may include a plying member 21 and a heating unit 22. You can.

The plying members 21 may be provided in plural numbers along the front-back direction to reduce the gap between the plurality of tow prepregs (P) transferred from the mounting unit 10.

At this time, the plying member 21 may be formed in various shapes such as plate shape, roller shape, etc., but is not limited thereto.

In addition, the plying member 21 may have one or more spacing grooves 210 or spacing protrusions 211 arranged laterally on the upper surface to reduce the spacing between the plurality of tow prepregs P.

In this way, as the plying member 21 is positioned from the front to the back, the spacing between the spacing grooves 210 or the spacing protrusions 211 gradually narrows, and when positioned at the rearmost position, one spacing groove 210 or two spacing grooves 210 are formed. Interval protrusions 211 may be formed.

For example, referring to Figures 3 and 4, it can be seen that the spacing groove 210 is formed in the plying member 21. At this time, it is explained as an example that the braiding member 21 consists of four pieces, but it is not limited to this and can be formed in various numbers depending on the location and size.

More specifically, when the gap groove 210 is formed in the plying member 21, the plying member 21 includes the first plying member 21a, the second plying member 21b, the third plying member 21c, and It may include a fourth braided member (21d).

The first plying member 21a may be located on the front side, and a plurality of first spacing grooves 210a may be formed laterally on the upper surface to be spaced apart as shown in (a) of FIG. 4.

The second plying member 21b is located at a certain distance rearward from the first plying member 21a, and has a plurality of second spacing grooves 210b laterally on the upper surface, as shown in (b) of FIG. 4. It may be formed to have a narrower spacing than the spacing groove 210a.

The third plying member 21c is located at a predetermined distance rearward from the second plying member 21b, and a plurality of third spacing grooves 210c laterally on the upper surface contact each other as shown in (c) of FIG. 4. It can be formed.

The fourth plying member 21d is located at a predetermined distance rearward from the third plying member 21c, and a fourth spacing groove 210d may be formed in the center of the upper surface.

At this time, the fourth spacing groove 210d may be formed to be 1 to 2 times larger than the width of the first spacing groove 210a, and is most preferably formed to be 1.5 times larger, but is not limited to this.

Here, when the width of the fourth spacing groove 210d is formed smaller than the width of the first spacing groove 210a, the tow prepreg P transferred from the third plying member 21c is formed too narrowly in the fourth spacing. A problem may occur in which the tow prepreg (P) is not unified while passing through the groove (210d). In addition, when the width of the fourth spacing groove 210d is formed to be larger than twice the width of the first spacing groove 210a, the tow prepreg P transferred from the third plying member 21c is too large. When passing through the widely formed fourth interval groove 210d, a problem may occur where the grooves are not unified and become wider or separated again.

In this way, the plying member 21 is formed as described above, so that the tow prepreg (P) transferred from the mounting portion 10 is formed in the first spacing groove 210a, the second spacing groove 210b, and the third spacing groove ( By moving along 210c) and the fourth spaced groove 210d, the plurality of tow prepregs (P) can be unified in the fourth spaced groove 210d.

Meanwhile, referring to FIG. 5, it can be seen that spacer protrusions 211 are formed on the plying member 21. At this time, it is explained as an example that the braiding member 21 consists of three pieces, but it is not limited to this and can be formed in various numbers depending on the location and size.

More specifically, when the spacing protrusion 211 is formed in the plying member 21, the plying member 21 connects the fifth plying member 21e, the sixth plying member 21f, and the seventh plying member 21g. It can be included.

The fifth plying member 21e may be located on the front side, and a plurality of first spacing protrusions 211a may be formed at intervals laterally on the upper surface.

The sixth plying member 21f is located at a certain distance rearward from the fifth plying member 21e, and has a plurality of second spacing protrusions 211b laterally on the upper surface that are spaced narrower than the first spacing protrusions 211a. It can be formed to have a gap.

The seventh plying member (21g) is located at a certain distance rearward from the third plying member (21c), and has two third spacing protrusions (211c) on the upper surface equal to the spacing between the second spacing protrusions (211b). Alternatively, it may be formed with a somewhat large separation distance.

In this way, the plying member 21 is formed such that the tow prepreg (P) transferred from the mounting portion 10 is formed between the first spacing protrusion (211a), the second spacing protrusion (211b), and the third spacing protrusion (211c). It can be made to move along the separation space. Accordingly, the plurality of toe prepregs (P) move along the space formed between the first and second spacer protrusions (211a) and 211b, narrowing the space between them, and finally, the two third spacer protrusions (211b). It can be unified while moving along the space formed between (211c).

Accordingly, the plurality of tow prepregs P are unified after gradually reducing the distance between them through the plying member 21 as described above, which can have the advantage of minimizing the phenomenon of twisting each other.

Referring to FIG. 6, the heating unit 22 is formed to have a length in the front-back direction and is equipped with a temperature control device, so that the tow prepreg (P) transferred from the plying member 21 can be heated and unified.

At this time, the heating unit 22 is equipped with a temperature control device capable of controlling the temperature according to the characteristics of the resin applied to the tow prepreg (P), so that the temperature can be adjusted according to the type of resin.

The heating unit 22 may be formed in various shapes, such as a plate shape or a roller shape, but is not limited thereto.

In addition, when the heating unit 22 is formed as shown in (a) of FIG. 6, the upper surface of the center of the spacing groove 210 or the upper surface of the space between the spacing protrusions 211 and the upper surface of the heating unit 22 are horizontal. It is formed to have a height so that the tow prepreg (P) transferred from the plying member 21 can move while maintaining horizontality.

Accordingly, the tow prepreg (P) can be unified more firmly through the fluidity of the resin by moving while maintaining its unified state and simultaneously receiving heat from the heating unit 22.

Meanwhile, the heating unit 22 may have a heating groove 220 formed in the center along the longitudinal direction, as shown in (b) of FIG. 6. At this time, when the plying member 21 forms the spacing groove 210, the heating unit 22 has the same height as the fourth plying member 21d, and the fourth spacing groove 210d and the heating groove 220 It is most preferable that it be formed in the same form, but it is not limited to this. In addition, the heating unit 22 is such that when the plying member 21 forms the spacing protrusions 211, the heating groove 220 is formed to have the same width and height as the space between the third spacing protrusions 211c. It is most preferred, but is not limited to this.

Accordingly, the tow prepreg (P) moves along the heating groove 220 of the heating unit 22 in a unified state through the braiding member 21 and simultaneously receives heat, thereby stably maintaining the unified state. and can be more firmly unified through the fluidity of the resin.

The shape fixing unit 30 fixes the shape of the tow prepreg (P) transferred from the plying unit 20 and may include a shape fixing roller 31 and a shape fixing guide roller 32.

At this time, the shape fixing unit 30 may be provided to control the rotation direction and speed of the shape fixing roller 31 and the shape fixing guide roller 32.

In addition, the shape fixing roller 31 is formed in the form of a roller and is equipped with a cooling function to cool the tow prepreg (P) transferred from the plying unit 20 to form the final shape of the tow prepreg (P).

At this time, it is most desirable for the lower end of the shape fixing roller 31 to be located in a straight line with the lower end of the heating unit 22 to minimize deformation of the tow prepreg (P) transferred from the heating unit 22. It is not limited.

The shape fixing guide roller 32 is provided to guide the movement of the tow prepreg (P), which is transferred to the shape fixing roller 31 and transferred to the specimen forming unit 40 through the shape fixing roller 31. It may be formed as a pair to be located on the front and rear sides of the fixing roller 31.

More specifically, the shape fixing guide roller 32 is located on the front and rear sides of the shape fixing roller 31, and the lower end is located in a straight line with the lower end of the shape fixing roller 31, thereby deforming the tow prepreg (P). It is most desirable to minimize this, but it is not limited to this.

Lastly, the specimen forming unit 40 is provided to wind the final form of tow prepreg (P) transferred from the shape fixing unit 30, and may include a mold 41 and a specimen forming guide roller 42. .

Referring to FIG. 7, the mold 41 is formed by winding the final form of tow prepreg (P), and is formed in the form of a thick plate, and may be provided with a rotation axis 410 penetrating the center.

Additionally, the mold 41 may be provided so that the rotation speed and transfer speed can be adjusted around the rotation axis 410.

At this time, it is most desirable for the mold 41 to have a width of 250 mm or more, which is generally the maximum length of a composite material specimen, but it is not limited to this and can be formed to have various widths.

In addition, the mold 41 may have a curved edge at which the tow prepreg (P) is wound to prevent single yarns from occurring in the tow prepreg (P).

Lastly, referring to FIG. 8 , the specimen preparation unit 40 may further include a cover unit 43 to protect the final form of the tow prepreg P wound on the mold 41.

The cover portion 43 is formed to protect the tow prepreg P wound around the mold 41 and prevents it from being separated from the mold 41, and may include a protective plate 430.

The protection plate 430 is formed in the form of a plate and is provided as a pair and is located on one or more of the upper and lower surfaces of the mold 41 to protect the tow prepreg (P).

At this time, the protection plate 430 includes bolt holes (not shown) penetrating vertically through both outer surfaces, and the mold 41 may have bolt grooves (not shown) formed at positions corresponding to the holes.

Accordingly, the protection plate 430 and the mold 41 can be fixed through bolts (B).

At this time, it is most preferable that the bolt B is formed to be fixed using a torque wrench, but it is not limited to this.

In this way, the cover portion 43 is positioned on the upper and lower surfaces of the mold 41 on which the tow prepreg (P) is wound, and then fixed with the same pressure using a torque wrench, so that the mold surface and the ground are parallel. It can be made to be in one state.

At this time, it is most desirable that the upper and lower parallelism between the mold 41 and the protective plate 430 is formed within 0.03 mm to minimize deformation and protect the tow prepreg (P).

Referring to FIG. 9, the cover part 43 may further include a fixing member 431.

The fixing member 431 may extend from both ends of the protection plate 430 and be curved. Accordingly, the end of the fixing member 431 is located on the side of the mold 41 and can be connected to the mold 41 through the bolt B.

At this time, the means for connecting and fixing the fixing member 431 and the mold 41 is not limited to the bolt B, and various commonly used coupling means can be applied.

In addition, the fixing member 431 has a bolt hole (not shown) with a thread formed on the inner surface for inserting the bolt (B), and a bolt groove (not shown) is formed on the side of the mold 41 at the position where the bolt (B) is inserted. ) can be formed.

In addition, a plurality of fixing members 431 may be formed on both sides of the protection plate 430, excluding the portion where the rotation axis 410 is located, and it is most preferable to form two as shown in FIG. 9 to be stably fixed. It is not limited.

The specimen guide roller 42 may be provided to guide the movement of the tow prepreg (P) transferred to the mold 41 from the shape fixing guide roller 32 located at the rear of the shape fixing roller 31.

More specifically, the specimen guide rollers 42 are formed as a pair and are located on the front and rear sides of the mold 41, but may be formed at a position spaced upward from the mold 41. Accordingly, the specimen guide roller 42 can minimize the deformation of the tow prepreg (P) transferred from the shape fixing unit 30 and ensure that it is stably wound on the mold 41.

As described above, according to the apparatus for manufacturing tow prepreg for physical property evaluation specimens according to an embodiment of the present invention, it is possible to minimize twisting of the tow prepreg and manufacture tow prepreg for specimens having uniform tension.

Accordingly, by manufacturing a specimen through a molding process using the tow prepreg for specimens described above, tow prepreg specimens with various and accurate tensions can be obtained.

The embodiments of the present invention described above can be implemented with various substitutions, modifications, and changes without departing from the technical spirit of the present invention, and such implementation can be realized by an expert in the technical field to which the present invention belongs based on the description of the above-described embodiments. It is easy to implement.

10: Mounting part
20: Joint Sabu
21: Plywood member
21a: 1st plying member
21b: Second plying member
21c: Third plywood member
21d: 4th plywood member
21e: 5th plywood member
21f: 6th plywood member
21g: 7th plywood member
210: Spacing groove
210a: First spacing groove
210b: Second spacing groove
210c: Third interval groove
210d: Fourth interval groove
211: Spacing protrusion
211a: First interval protrusion
211b: Second interval protrusion
211c: Third interval protrusion
22: heating unit
220: Heating groove
30: Shape fixing unit
31: Shape fixing roller
32: Shape fixing guide roller
40: Psalm painting section
41: mold
410: rotation axis
42: Specimenizing guide roller
43: cover part
430: protective plate
431: Fixing member
P: Tow prepreg
B: bolt

Claims (7)

In the tow prepreg manufacturing device for physical property evaluation specimens,
A mounting portion formed in plural pieces, each of which is provided with a tow prepreg wound around the tow prepreg, and provided with a tension adjustment device that adjusts the tension applied to the tow prepreg when the tow prepreg is released;
a plying unit that unites the plurality of tow prepregs transferred from the mounting unit into one tow prepreg;
A shape fixing unit formed in the form of a roller and equipped with a cooling function to fix the shape of the tow prepreg transferred from the plying unit, and
It is formed in the form of a plate having a thickness, and is provided with a mold with a rotation axis passing through the center, and includes a specimen forming part where the tow prepreg transferred from the shape fixing part is wound on the mold,
The joint division,
A plurality of plying members provided in the front-back direction to reduce the gap between the plurality of tow prepregs transferred from the mounting unit, and
A tow prepreg manufacturing device for physical property evaluation specimens that is formed to have a length in the front-back direction and includes a heating unit equipped with a temperature control device to heat and unify the tow prepreg transferred from the plying member.
According to paragraph 1,
The tow prepreg,
A tow prepreg manufacturing device for physical property evaluation specimens, characterized in that it is a small tow prepreg with a filament count of 1,000 to 24,000.
delete According to paragraph 1,
The braided member is,
One or more spaced grooves or spaced protrusions arranged laterally are formed on the upper surface,
Manufacturing a tow prepreg for a physical property evaluation specimen, characterized in that the spacing between the grooves or protrusions gradually narrows as it is positioned from the front to the rear, and when it is located in the rearmost position, one groove or two spacing protrusions are formed. Device.
According to paragraph 1,
The braided member is,
A first plying member located on the front side and having a plurality of first spacing grooves spaced apart from each other laterally on the upper surface;
a second plying member positioned at a predetermined distance rearward from the first plying member and having a plurality of second spacing grooves formed laterally on the upper surface to have a spacing narrower than that of the first spacing groove;
A third plying member positioned at a predetermined distance rearward from the second plying member and formed with a plurality of third spacing grooves laterally in contact with each other on the upper surface, and
Including a fourth plying member located at a predetermined distance rearward from the third plying member and having a fourth spacing groove formed in the center of the upper surface,
A physical property evaluation specimen, wherein the tow prepreg transferred from the mounting unit moves along the first groove, second groove, third groove, and fourth groove and is unified in the fourth groove. Tow prepreg manufacturing equipment.
According to paragraph 1,
The heating unit,
A tow prepreg manufacturing device for physical property evaluation specimens, which is formed with a length in the front-back direction and has a heating groove formed along the longitudinal direction in the center.
According to paragraph 1,
The specimen making part,
Further comprising a cover part to protect the tow prepreg wound around the mold,
The cover part,
A tow prepreg manufacturing device for physical property evaluation specimens, which is formed in the form of a plate and is provided as a pair, and is located on at least one of the upper and lower surfaces of the mold to protect the tow prepreg.