KR101676726B1 - the manufacturing system for uniform prepreg - Google Patents

the manufacturing system for uniform prepreg Download PDF

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Publication number
KR101676726B1
KR101676726B1 KR1020150058064A KR20150058064A KR101676726B1 KR 101676726 B1 KR101676726 B1 KR 101676726B1 KR 1020150058064 A KR1020150058064 A KR 1020150058064A KR 20150058064 A KR20150058064 A KR 20150058064A KR 101676726 B1 KR101676726 B1 KR 101676726B1
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South Korea
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yarn
prepreg
roller
thermoplastic resin
unit
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KR1020150058064A
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Korean (ko)
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KR20160126679A (en
Inventor
천진성
우남경
윤주일
이주석
김재관
송보현
유호욱
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주식회사 티포엘
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/40—Shaping or impregnating by compression not applied
    • B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Reinforced Plastic Materials (AREA)

Abstract

The present invention relates to a uniform prepreg manufacturing system, comprising: a material supply unit for supplying an intermediate yarn, a thermoplastic resin film on both sides of the yarn, and a releasing paper on both sides of the yarn, while feeding yarn, thermoplastic resin film and release paper; A plurality of heating rollers which are heated by internal heaters are provided in accordance with the moving direction of the yarn so that the yarn, the thermoplastic resin film, and the release paper supplied to the upper and lower heating rollers are heated and pressed to impregnate the thermoplastic resin into the yarn, A forming unit for laminating the substrate to the substrate; The thermoplastic resin is impregnated into the release paper drawn out from the forming part, and the laminated raw material forms a prepreg in sheet form by cooling; A pair of upper and lower collecting rollers rotating to remove the release paper on both sides of the prepreg; A traction unit configured to draw a prepreg manufactured by pulling a yarn, a thermoplastic resin film, and a release sheet of the material feeding unit from the forming unit and the release material removing unit through the upper and lower traction rollers; And a winding portion winding a prepreg drawn out to a winding roller rotated by a winding motor, wherein the pulling roller of the pulling portion and the heating roller of the forming portion have the same diameter and are separated from each other by a separate main motor, The drawing roller, the removing roller of the release paper removing unit, and the heating roller of the forming unit are rotated to rotate the drawing roller, the collecting roller and the heating roller at a uniform speed to produce a uniform quality prepreg.

Figure R1020150058064

Description

[0001] The present invention relates to a uniform prepreg manufacturing system,

The present invention relates to a uniform prepreg manufacturing system, comprising: a material supply unit for supplying an intermediate yarn, a thermoplastic resin film on both sides of the yarn, and a releasing paper on both sides of the yarn, while feeding yarn, thermoplastic resin film and release paper; A plurality of heating rollers which are heated by internal heaters are provided in accordance with the moving direction of the yarn so that the yarn, the thermoplastic resin film, and the release paper supplied to the upper and lower heating rollers are heated and pressed to impregnate the thermoplastic resin into the yarn, A forming unit for laminating the substrate to the substrate; The thermoplastic resin is impregnated into the release paper drawn out from the forming part, and the laminated raw material forms a prepreg in sheet form by cooling; A pair of upper and lower collecting rollers rotating to remove the release paper on both sides of the prepreg; A traction unit configured to draw a prepreg manufactured by pulling a yarn, a thermoplastic resin film, and a release sheet of the material feeding unit from the forming unit and the release material removing unit through the upper and lower traction rollers; And a winding portion winding a prepreg drawn out to a winding roller rotated by a winding motor, wherein the pulling roller of the pulling portion and the heating roller of the forming portion have the same diameter and are separated from each other by a separate main motor, The drawing roller, the removing roller of the release paper removing unit, and the heating roller of the forming unit are rotated to rotate the drawing roller, the collecting roller and the heating roller at a uniform speed to produce a uniform quality prepreg.

Generally, a prepreg is an intermediate base material of a fiber-reinforced composite material, and is a molding material preliminarily impregnated with a matrix resin in a reinforcing fiber. The prepreg is formed in a state of being wound around a branch pipe in a state of being combined with release paper, The prepreg is separated from the releasing paper, prepregs are stacked, and the resin is cured by heating and pressing to produce a molded product of the fiber-reinforced composite material.

For example, in a general manufacturing system of a prepreg applying a thermoplastic resin, a reinforcing fiber (yarn or sheet) wound on a roller is prepared, and a curing agent (epoxy series) contained in the reinforcing fiber is subjected to a de- the thermoplastic resin film and the releasing paper are laminated to each other, passed between the upper and lower heating rollers, pressed with a suitable pressure, passed through a plurality of heating rollers, A prepreg in which the releasing paper is integrally attached to one surface of the reinforcing fiber is wound around the paper tube by the winding device or the releasing paper is removed in front of the winding device and the thermoplastic resin The impregnated reinforcing fibers are wound around the branch pipe by a winding device to complete the preparation of the prepreg, Examples of the method for manufacturing the prepreg of applying the resin is published in the Republic of Korea Patent Application No. 1991-0021769.

In addition, in Korean Patent Registration No. 0488752, when a prepreg formed by impregnating a base material with resin and semi-cured is cut into a predetermined size, the surface of the prepreg is irradiated with a laser light beam, The resin of the irradiated portion is softened while the position is moved on the prepreg image, the softened resin portion is cut by the cutting blade, and the cutting blade cuts the portion of the resin-softened prepreg, Discloses a method of cutting a prepreg that is not scattered and a cutting apparatus, and the cutting blade specifies cutting blades such as guillotine, rotary cutter, shearing blade and saw blade.

However, in the prepreg manufacturing system employing the above-mentioned thermoplastic resin, the yarn is pulled by a winding device that winds up the prepreg finally produced, and the winding device winds the final product by a constant rotation speed of the motor As the diameter of the product is increased, the speed at which the product is actually drawn decreases gradually as the number of products is increased. As a result, the speed of movement between the heating rollers is not uniform. And the degree of spreading of the prepreg varies depending on the length thereof, so that the quality of the prepreg is not uniform along the length direction.

In addition, in order to produce a strip-shaped prepreg while manufacturing a prepreg of a conventional thermoplastic resin, a slitting operation is carried out using a cutting blade as in the above-mentioned second patent, Since prepregs can not straighten due to uneven quality along their length, it has been common to use cutting blades of circular cutters for slitting, which causes scattering cutting dust There was a problem.

In order to solve the problem of the occurrence of cut-offs, the energy beam and the cutting blade are used in combination in the slitting of the prepreg as in the second example patent, but the use of such an energy light beam and the cutting blade ) Has a problem in that it requires a lot of manufacturing cost and complicated structure compared with a cutter of a general one-type structure. Also, since the rotation of the cutting blade and the use of the energy beam of high output power, There is a problem in that a manufacturing system capable of producing a prepreg with uniform quality along the length direction and a prepreg manufacturing method in which clean slitting is applied even when a single- System development was required.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a thermoplastic resin film, A plurality of heating rollers which are heated by internal heaters are provided in accordance with the moving direction of the yarn so that the yarn, the thermoplastic resin film, and the release paper supplied to the upper and lower heating rollers are heated and pressed to impregnate the thermoplastic resin into the yarn, A forming unit for laminating the substrate to the substrate; The thermoplastic resin is impregnated into the release paper drawn out from the forming part, and the laminated raw material forms a prepreg in sheet form by cooling; A pair of upper and lower collecting rollers rotating to remove the release paper on both sides of the prepreg; A traction unit configured to draw a prepreg manufactured by pulling a yarn, a thermoplastic resin film, and a release sheet of the material feeding unit from the forming unit and the release material removing unit through the upper and lower traction rollers; And a winding portion winding a prepreg drawn out to a winding roller rotated by a winding motor, wherein the pulling roller of the pulling portion and the heating roller of the forming portion have the same diameter and are separated from each other by a separate main motor, The drawing roller, the removing roller of the release paper removing unit, and the heating roller of the forming unit are rotated to rotate the drawing roller, the collecting roller and the heating roller at a uniform speed to produce a uniform quality prepreg.

Further, a plurality of cutters are arranged between the releasing paper removing unit and the winding unit, or between the releasing paper removing unit and the pulling unit, along the width direction of the prepreg, and the prepreg is cut in the longitudinal direction by the cutter, Shaped prepreg is manufactured by the prepreg having uniform characteristics, and the cutter of the slitting portion is cut by the cutter of a one-character structure, , It is cut into a uniform width, and the structure is simpler than the conventional circular cutter and the productivity is excellent.

And a cooling device such as a blower is further provided at the end of the forming part so as to facilitate the curing of the thermoplastic resin impregnated and laminated to the yarn, Wherein the heating roller and the plate heater have different temperatures according to the moving direction of the yarn to facilitate impregnation and laminating of the thermoplastic resin to the yarn, Adjust the degree of impregnation and laminating of the thermoplastic resin.

A reduction gear is constituted by a power transmission means at one end of each heating roller, and a rotation speed of the power transmission means is adjusted by a speed reducer so as to control the impregnation and laminating degree of the thermoplastic resin with respect to the yarn.

As described above, according to the present invention, there is provided a film forming apparatus comprising: a material supply unit for supplying a yarn, a thermoplastic resin film, and a release paper so that a middle yarn, a thermoplastic resin film on both sides of the yarn, A plurality of heating rollers which are heated by internal heaters are provided in accordance with the moving direction of the yarn so that the yarn, the thermoplastic resin film, and the release paper supplied to the upper and lower heating rollers are heated and pressed to impregnate the thermoplastic resin into the yarn, A forming unit for laminating the substrate to the substrate; The thermoplastic resin is impregnated into the release paper drawn out from the forming part, and the laminated raw material forms a prepreg in sheet form by cooling; A pair of upper and lower collecting rollers rotating to remove the release paper on both sides of the prepreg; A traction unit configured to draw a prepreg manufactured by pulling a yarn, a thermoplastic resin film, and a release sheet of the material feeding unit from the forming unit and the release material removing unit through the upper and lower traction rollers; And a winding portion winding a prepreg drawn out to a winding roller rotated by a winding motor, wherein the pulling roller of the pulling portion and the heating roller of the forming portion have the same diameter and are separated from each other by a separate main motor, It is possible to produce and supply a uniform quality prepreg while rotating the traction roller, the release roller removal roller and the heating roller of the forming part to rotate the traction roller, the collection roller and the heating roller at a uniform speed .

Further, a plurality of cutters are arranged between the releasing paper removing unit and the winding unit, or between the releasing paper removing unit and the pulling unit, along the width direction of the prepreg, and the prepreg is cut in the longitudinal direction by the cutter, Shaped prepreg is manufactured by the prepreg having uniform characteristics, and the cutter of the slitting portion is cut by the cutter of a one-character structure, It is possible to cut the blade to a uniform width, and it is more simple in structure than the conventional circular blade and has an excellent productivity.

And a cooling device such as a blower is further provided at the end of the forming part so as to facilitate the curing of the thermoplastic resin impregnated and laminated to the yarn, Wherein the heating roller and the plate heater have different temperatures according to the moving direction of the yarn to facilitate impregnation and laminating of the thermoplastic resin to the yarn, The degree of impregnation and laminating of the thermoplastic resin can be controlled.

A speed reducer is constituted by a power transmission means at one end of each heating roller, and the degree of impregnation and laminating of the thermoplastic resin with respect to the yarn can be adjusted by controlling the rotation speed of the power transmission means by the reducer.

1 is a front view of a prepreg manufacturing system according to the present invention;
2 is a plan view of a prepreg manufacturing system according to the present invention;
3 (A) and 3 (B) are side views showing the movement of the heating roller of the forming part included in the prepreg manufacturing system according to the present invention.
4 is a front view of a material supply unit included in the prepreg manufacturing system according to the present invention.
5 is a front view of a release paper removing unit, a slitting unit, a pulling unit, and a winding unit included in the prepreg manufacturing system according to the present invention.
FIG. 6 is a partially enlarged view showing a front view of the release agent removing unit, the slitting unit, the pulling unit, and the rotation of the cutter of the slitting unit included in the prepreg manufacturing system according to the present invention.

The present invention relates to a uniform prepreg manufacturing system, comprising: a material supply unit for supplying an intermediate yarn, a thermoplastic resin film on both sides of the yarn, and a releasing paper on both sides of the yarn, while feeding yarn, thermoplastic resin film and release paper; A plurality of heating rollers which are heated by internal heaters are provided in accordance with the moving direction of the yarn so that the yarn, the thermoplastic resin film, and the release paper supplied to the upper and lower heating rollers are heated and pressed to impregnate the thermoplastic resin into the yarn, A forming unit for laminating the substrate to the substrate; The thermoplastic resin is impregnated into the release paper drawn out from the forming part, and the laminated raw material forms a prepreg in sheet form by cooling; A pair of upper and lower collecting rollers rotating to remove the release paper on both sides of the prepreg; A traction unit configured to draw a prepreg manufactured by pulling a yarn, a thermoplastic resin film, and a release sheet of the material feeding unit from the forming unit and the release material removing unit through the upper and lower traction rollers; And a winding portion winding a prepreg drawn out to a winding roller rotated by a winding motor, wherein the pulling roller of the pulling portion and the heating roller of the forming portion have the same diameter and are separated from each other by a separate main motor, The drawing roller, the removing roller of the release paper removing unit, and the heating roller of the forming unit are rotated to rotate the drawing roller, the collecting roller and the heating roller at a uniform speed to produce a uniform quality prepreg.

The prepreg manufacturing system according to the present invention includes a material supplying unit 100, a forming unit 200, a release paper removing unit 300, a pulling unit 400 and a winding unit 600, 1 to 6, the following will be described.

1, 2, and 4, the material supply unit 100 includes a plurality of supply rollers 110, and a roll 120 wound with the yarns 120 is wound around the supply rollers 110, (Or paper tube) around which the thermoplastic resin film 130 is wound and a roll (or a paper tube) around which the release paper 140 is wound are installed. The supply roller 110 of the material supply unit 100 is provided with a plurality And the feeding roller 110 is of a freely rotatable structure.

For reference, the yarn 120 is formed by deflecting a yarn in the form of a tow. The yarn 120 may be a carbon fiber yarn, a glass fiber yarn, an aramid fiber yarn, a silica fiber yarn, a ceramic fiber yarn or an ultra high molecular weight polyethylene fiber yarn. A yarn 120 having a fiber yarn and other glass fiber yarns excellent in heat resistance spread through a spreading device and exposed to a high temperature of 400 to 600 ° C to remove a caking agent (epoxy series) (Not shown) is placed between the material supply part 100 and a spreading device (not shown) and a dehydrating device (not shown) are sequentially placed between the material supply part 100 The yarn 120 may be supplied to the next forming unit 200 by sequentially advancing and releasing the yarn and deflecting the yarn 120.

The thermoplastic resin film 130 is a thermoplastic resin in the form of a film, and the thermoplastic resin film is wound on a roll (or paper tube).

The releasing paper 140 is a peeling paper of a material which does not adhere to the heated thermoplastic resin film 130 even when it is attached.

 The yarn 120, the thermoplastic resin film 130 and the releasing paper 140 are respectively installed in the material supplying unit 100 and supplied to the forming unit 200 to be described later. The yarn 120, the thermoplastic resin film 130, The thermoplastic resin film 130 is placed on the outer side of the yarn 120 and the releasing paper 140 is placed on the outermost side of the yarn 120. For this purpose, the yarn 120 is placed on the upper and lower portions of the material supply unit 100, It is preferable that the thermoplastic resin film 130 is disposed on the upper and lower portions of the material supply portion 100 and the release paper 140 is disposed on the upper and lower portions of the material supply portion 100, respectively.

The thermoplastic resin film 130 and the releasing paper 140 are supplied in accordance with the form of the prepreg to be manufactured. When the prepreg is formed into a sheet form, the thermoplastic resin film 130 and the releasing paper 140, In the case of a strip-shaped prepreg, the thermoplastic resin film 130 and the release paper 140 (having a width corresponding to the width of the embroidered yarn 120) The release paper 140 may be supplied in a sheet form since it is removed later.

The subsequent forming unit 200 applies heat to laminate thermoplastic resin on both sides of the yarn 120 and hardens them. As shown in FIGS. 1 and 2, the heating rollers 210 and 210 ' A plurality of heating rollers 210 and 210 'positioned above and below the heating rollers 210 and 210' move the yarn 120 in the moving direction of the yarn 120 The heating rollers 210 and 210 'generate heat by the internal heaters and the heating rollers 210 and 210' are heated at a temperature of 20 to 400 ° C. according to the type of the thermoplastic resin .

At least one pair of cooling rollers 220 and 220 'positioned up and down are disposed at the end of the first forming part 200 according to the moving direction of the yarn 120. Each of the cooling rollers 220 and 220' In addition to the cooling rollers 220 and 220 ', blows air into the end portion of the forming part 200 along the direction in which the yarn 120 moves, A cooling device 250, such as a blower or blower, may be further configured to further cool and cure.

The plate heater 230 is further provided between the heating rollers 210 and 210 'that are adjacent to the left and right sides of the yarn 120 in the direction in which the yarn 120 moves. Or only a lower plate heater (not shown) positioned at a lower portion with respect to a path through which the yarn 120 moves may be constituted, or only a lower plate heater (not shown) (The plate heater in the drawing corresponds to the upper plate heater) and the lower heater (not shown) positioned in the upper plate heater and the lower plate heater, respectively, and a heater is built in each of the upper plate heater and the lower plate heater, The heater 230 forms 20 to 400 占 폚 depending on the type of the thermoplastic resin, like the heating rollers 210 and 210 '.

The heating temperatures of the heating rollers 210 and 210 'and the plate heater 230 between the heating rollers 210 and 210' may be the same as each other in accordance with the moving direction of the yarn 120, The temperature of each of the heating rollers 210 and 210 'and the plate heater 230 is increased step by step. For this purpose, the temperature of each part is checked by a temperature sensor or the like, .

The diameter of the heating rollers 210 and 210 'and the diameter of the cooling rollers 220 and 220' may be the same and the rotation speeds may be all the same, The structure of the power transmission for rotating speed and rotation of the heating rollers 210 and 210 'and the cooling rollers 220 and 220' will be described later. .

The heating roller 210, the plate heater 230 and the cooling roller 220 positioned above the path of the yarn 120 can move up and down by the cylinder 240 The molding unit 200 is supported by a frame 241 woven in a hexahedron shape and the cylinder 240 is fixed to an upper portion of the frame 241. The frame 241, A plurality of guide rods 243 and a linear bushing 244 which moves along the guide rods 243 are provided to constitute a horizontal plate main compartment 242. Each main compartment 242 and linear The main cradle 242 is movable up and down along the guide rod 243 by means of the linear bushing 244.

Both ends of the upper heating roller 210 are supported by a cradle 211 and both ends of the upper plate heater 230, that is, the upper heater are supported by a cradle 231, 220 are supported by a mount table 221. Each mount table 231 is fixed to the main mount table 242 and includes a heating roller 210 belonging to the main mount table 242 by the operation of the cylinder 240, , The cooling rollers 220 can be raised or lowered and the interval between the lower heating roller 210 'and the lower heater and the cooling roller 220' can be adjusted simultaneously.

Accordingly, the forming unit 200 constitutes the heating rollers 210 and 210 'and the cooling rollers 220 and 220' positioned up and down in accordance with the moving direction of the yarn 120, The heating roller 210 and the upper plate heater and the cooling roller 220 positioned above the movement path of the yarn 120 are further connected to the cylinder 240 (Upward and downward) movement of the heating roller 210 ', the lower plate heater, and the cooling roller 220'.

As described above, the yarn 120, the thermoplastic resin film 130, and the release paper 140 are supplied to the outer side of the yarn 120 and the release paper 140 in the middle by the material supply unit 100 and pass through the forming unit 200 The thermoplastic resin film 130 is melted by the heating rollers 210 and 210 and the plate heater 230 and is laminated on the surface of the yarn 120 while being impregnated into the yarn 120, The thermoplastic resin moves to the rollers 210 and 210 'while preventing the thermoplastic resin from adhering thereto, and the thermoplastic resin starts to harden as it passes through the cooling rollers 220 and 220', and the thermoplastic resin is impregnated and laminated The yarn 120 is cooled faster by the cooling device 250 which is added even when the forming part 200 is removed.

Next, the release paper removing unit 300 removes the release paper 140 attached to the yarn 120 impregnated and laminated with the thermoplastic resin, thereby peeling the release paper 140 as it is, The separation rollers 310 and 310 'can simultaneously remove and collect the release paper 140. To this end, the collection roller 310 is disposed above and below the path along which the yarn 120 moves, The separation rollers 310 and 310 'are rotated by the main motor 700 so that the release paper 140 is wound around the respective collection rollers 310 and 310' It is preferable to arrange a plurality of collection rollers 310 and 310 'in accordance with the moving direction of the yarn 120 to collect the release sheets 140 respectively Do.

When the releasing paper 140 is removed from the yarn 120 in which the thermoplastic resin is impregnated and laminated in the releasing paper removing unit 300, the prepreg having the thermoplastic resin impregnated and laminated to the yarn 120 is produced.

5 and 6, the drawing unit 400 is configured to feed the yarn 120, the thermoplastic resin film 130, and the release paper 140 supplied from the material supply unit 100 to the forming unit 200, The pulling unit 400 is configured by the pulling rollers 410 and 410 'positioned up and down, and the pulling rollers 410 and 410' The traction roller 410 is vertically moved by the cylinder 420 and the upper traction roller 410 and the lower traction roller 410 'are received by the main motor 700, In the state where the prepreg is positioned between the upper and lower traction rollers 410 and 410 ', the upper pulling roller 410 is moved to the lower pulling roller 410' to rotate while pressing the prepreg, The thermoplastic resin film 130 and the releasing paper 140 are pulled up to the forming part 200 and the release paper removing part 300 And takes charge of drawing to the next winding unit 600.

The main motor 700 that rotates the traction rollers 410 and 410 'transmits power to the heating rollers 210 and 210' and the cooling rollers 220 and 220 ' 1 and 2, the heating roller 210, 210 ', the cooling roller 220, 220', the traction roller 410 (410) of the forming unit 200, And the main motor 700 are configured to have the same diameter and the main motor 700 is configured to have the same diameter as that of the main motor 700. The main motor 700 includes a power transmission means 710 such as a chain / belt, pulley / belt, gear / gear, transmission, speed reducer, And a plurality of shafts 720 (the shafts and shafts are applied to a plurality of positions but are assigned with a single number) The rotational force of the main motor 700 is transmitted.

In other words, the main motor 700 transmits power to the upper and lower drawing rollers 410 and 410 'and the upper and lower collecting rollers 310 and 310' through the power transmitting means 710, A power transmission means 710 for receiving the rotational force of the main motor 700 is vertically disposed between the molding unit 200 and the molding unit 200, The shaft 210 of the heating roller 210 and the cooling roller 220 of the lower portion are connected to the shaft 210 of the lower roller 210 and the cooling roller 220, The power transmission means 710 is connected to the shaft 720 and the shaft 720 at one end of the upper heating roller 210 and the cooling roller 220 is connected to the power transmitting means 710. [ 710 and the power transmission means 710 are connected to each other by a shaft 720. The upper and lower heating rollers 210 and 210 'and the cooling rollers 220 and 220' (300) and It is connected to the power transmission means located in the male part 200, 710 and receives the rotary force, respectively.

When the shaft 720 connected between the release paper removing unit 300 and the forming unit 200 is connected by a universal joint, the heaters 210 and 210 'on the upper portion of the forming unit 200 and the cooling roller 220 or 220 'may move up and down or a horizontal height may be different from each other and transmit rotational force to the connection of the shaft 720. In addition, It is preferable that the shaft 720 connecting the rotational force between the power transmitting means 710 and the shaft 400 is connected by a universal joint as necessary.

In this case, the heating roller 210 ', the cooling roller 220 (220'), and the traction roller 410 (410 ') have the same diameter, and the main motor 700 The heating roller 210, 210 ', the cooling rollers 220, 220' and the traction rollers 410, 410 'all rotate at the same speed, The thermoplastic resin film 130, the releasing paper 140, and the prepreg are moved at a uniform speed to the pulling portion 400, thereby producing a uniform quality prepreg.

The temperature of the heating rollers 210 and 210 'can be set differently according to the movement path of the yarn 120 as described above. Further, the heating rollers 210 and 210' The heating roller 210 or 210 'or the cooling roller 220' of the forming unit 200 may be increased or decreased in speed by increasing or decreasing the speed of the heating roller 210 'and the cooling roller 220 or 220' The rotation speed control of the heating rollers 210 and 210 'and the cooling rollers 220 and 220' through the speed reducer is performed by applying the power transmission means 710 located at one end of each of the cooling rollers 220 and 220 ' The degree of impregnation and laminating of the thermoplastic resin to the yarn 120 can be controlled.

In the forming part 200, the release paper 140 is placed on the upper and lower sides of the yarn 120 to which the thermoplastic resin is impregnated and laminated. The release paper 140 is stopped by the heating rollers 210 and 210 ' The rotation speed of the heating rollers 210 and 210 'and the cooling rollers 220 and 220' does not affect the moving speed of the yarn 120. In this case,

5 and 6, a slit portion 500 (see FIG. 5) is provided between the release paper removing unit 300 and the pulling unit 400, as shown in FIGS. 5 and 6, between the release paper removing unit 300 and the winding unit 600 The slitting unit 500 cuts the sheet-form prepreg so as to have a proper width. The cutter 510 has a plurality of cutters 510 along the width direction of the prepreg, The prepreg is cut along the width of the prepreg along the interval of the cutter 510. The prepreg thus cut is wound on the winding roller 610 in the winding unit 600, Or wound around a plurality of winding rollers 610, respectively.

The structure and operation of the cutter 510 of the slitting unit 500 may be variously configured. The cutter 510 may include a circular cutter (not shown), which is widely used for slitting the existing prepreg manufacturing system And the circular cutter is configured to be movable up and down so that the circular cutter positioned on the prepreg is moved to a position The circular cutter is rotated, and the prepreg is slitted by the movement of the prepreg.

As shown in Figs. 5 and 6, when a cutter having a one-piece structure is generally used and the cutter 510 is configured to be rotatable by control at a certain angle, The cutter 510 has a structure in which the cutter 510 is rotated and slipped by the movement of the prepreg while being positioned so as to pass through the prepreg. In addition, as shown in FIG. 6, When the guide plate 520 is further provided to cover the surfaces (upper and lower surfaces), the guide plate 520 keeps the prepregs flat to make it easier to slit. In the past, However, since the prepregs manufactured according to the present invention are uniform along the longitudinal direction, a single-element cutter may be applied, and such a single-cutter may be used.Reduce manufacturing costs for the system are more simple features.

Finally, as shown in FIGS. 2 and 5, the winding unit 600 winds the completed prepreg on the paper tube, and when the paper tube is wound on the paper tube for a predetermined length, the measuring unit (encoder or the like) And a cutter (not shown in the drawing, a cutter for cutting the fabric in the width direction is generally used in the field of weaving machines, so a detailed description is omitted) is further provided in front of the winding unit 600, and a cutter ) In the width direction of the prepreg.

More specifically, the winding unit 600 is constituted by a winding roller 610 rotated by a separate winding motor 620, and a branch pipe is sandwiched between the winding roller 610 and the prepreg manufactured in the branch pipe The winding roller 610 is rotated by the winding motor 620 to wind the prepreg. When the length of the prepreg is proper, the prepreg is cut by the cutting machine. In this way, The manufacturing is completed.

The uniform prepreg manufacturing system according to the present invention includes a material supplying unit 100, a forming unit 200, a release paper removing unit 300, a pulling unit 400, and a winding unit 600, A main motor 700 of a traction unit 400 that trains the yarn 120 of the material supply unit 100 and the thermoplastic resin film 130 and the release paper 140 and a winding motor 620 of the winding unit 600, And the heating roller 210 and the cooling roller 220 and 220 'of the forming part 200 and the cooling roller 220 and 220' of the drawing part 400 have the same diameter And the feed rate of the yarn 120 and the production speed of the prepreg are kept constant by the pulling unit 400 to uniformly maintain the quality of the prepreg along the length direction.

The temperatures of the heating rollers 210 and 210 'and the plate heater 230 of the forming unit 200 may be varied according to the moving direction of the yarn 120 to facilitate laminating, The degree of impregnation of the thermoplastic resin with respect to the yarn 120 is controlled by changing the rotational speed of the heating roller 210 ' (Thickness) of the substrate can be controlled.

For the sake of reference, the material supplying unit 100, the forming unit 200, the releasing paper removing unit 300, the drawing unit 400, the winding unit 600, or the material supplying unit 100, the forming unit 200, The guide rollers that rotate freely are disposed at a plurality of positions between the reject 300, the pulling unit 400 and the winding unit 600 to allow the materials to move while maintaining a proper tensile force, A wheel is provided on each of the lower part 200, the release paper removing part 300, the pulling part 400, and the winding part 600 to facilitate movement.

100: material supply unit 110: supply roller
200: forming part 210, 210 ': heating roller
220, 220 ': cooling roller 230: plate heater
211, 221, 231: cradle 240: cylinder
241: Frame 242: Main cradle
250: Cooling unit
300: release paper removing unit 310, 310 ': collection roller
400: Traction unit 410, 410 ': Traction roller
500: Slitting part 510: Cutter
600: winding portion 610: winding roller
620: Winding motor 700: Main motor
710: Power transmission means 720:

Claims (5)

A material supply unit for supplying a yarn, a thermoplastic resin film, and a release paper so that the middle yarn, the thermoplastic resin film on both sides of the yarn, and the release paper are located on both outer sides;
A plurality of heating rollers which are heated by internal heaters are provided in accordance with the moving direction of the yarn so that the yarn, the thermoplastic resin film, and the release paper supplied to the upper and lower heating rollers are heated and pressed to impregnate the thermoplastic resin into the yarn, A forming unit for laminating the substrate to the substrate;
The thermoplastic resin is impregnated into the release paper drawn out from the forming part, and the laminated raw material forms a prepreg in sheet form by cooling;
A plurality of pair of collection rollers positioned up and down, the release paper removing unit removing the release sheets on both sides of the prepreg by a rotating collection roller;
A traction unit configured to draw a prepreg manufactured by pulling a yarn, a thermoplastic resin film, and a release sheet of the material feeding unit from the forming unit and the release material removing unit through the upper and lower traction rollers;
And a winding portion winding a prepreg drawn out to a winding roller rotated by a winding motor,
The pulling roller of the pulling portion and the heating roller of the forming portion have the same diameter and transmit the power to the pulling roller of the pulling portion, the picking roller of the pulling portion, and the heating roller of the forming portion by a separate main motor,
A slitting portion is formed between the release agent removing portion and the winding portion, or between the release agent removing portion and the pulling portion, and a rotary circular cutter or a single-element cutter is disposed in the width direction of the prepreg And a slit portion having a guide plate for covering both sides of the prepreg is formed in front of the cutter,
Characterized in that a prepreg of uniform quality is produced.
delete delete The method according to claim 1,
And a pair of cooling rollers having an inner space at an end of the forming part,
The heating roller and the plate heater may have different temperatures depending on the moving direction of the yarn,
Characterized in that the impregnating and laminating of the thermoplastic resin to the yarn is easy.
5. The method of claim 4,
A step of forming a speed reducer by a power transmitting means at one end of the heating roller and controlling the rotational speed of the power transmitting means by a speed reducer to control the impregnation and laminating degree of the thermoplastic resin with respect to the yarn, system.
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