WO2021132737A1

WO2021132737A1 - Production method for thermoplastic composite woven sheet, production apparatus using same, and woven sheet produced thereby

Info

Publication number: WO2021132737A1
Application number: PCT/KR2019/018288
Authority: WO
Inventors: 길형배; 이재훈
Original assignee: 코오롱플라스틱 주식회사
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2021-07-01

Abstract

The present invention relates to a production method for a thermoplastic composite woven sheet, a production apparatus using the production method, and a woven sheet produced by the production apparatus. Provided are, with respect to producing a thermoplastic composite woven sheet using thermoplastic fiber-strengthening composite, a production method which reduces material loss rate in cases where a stacking pattern is required, a production apparatus using the production method, and the woven sheet.

Description

Manufacturing method of thermoplastic composite fabric sheet, manufacturing apparatus using the same, and fabric sheet manufactured therewith

The present invention relates to an apparatus for manufacturing a thermoplastic composite fabric sheet and a fabric sheet produced therefrom, and more particularly, to a fabric sheet and a fabric sheet having a predetermined angle based on the production direction of the fabric sheet by intersecting the fabric sheet to produce a material loss rate It relates to an apparatus for manufacturing a shrinkable thermoplastic composite fabric sheet and a fabric sheet manufactured therefrom.

In various industrial fields, especially in the transportation field including automobiles and aerospace/aerospace fields, the demand for weight reduction is increasing, and the application and interest of thermoplastic composites are increasing.

As the main technologies of existing composite materials, thermosetting resins such as epoxy resin, BMI (Bismaleimide), and phenolic resin, carbon fiber, fiberglass, and aramid fiber are used. Materials made by compounding reinforcing fibers, such as, and products using them have been the mainstays. However, thermosetting composites have a problem in that the time required for curing the resin is excessive, resulting in excessive production time.

In order to solve this problem, recently, the development of thermoplastic resin composite materials such as PP resin (Polypropylene), nylon resin (Polyamide), and PPS (Polyphenylene Sulfide) and reinforcing fibers are being actively developed and products using them are being actively developed.

Thermoplastic composites are classified into discontinuous fiber composites and continuous fiber composites. Discontinuous fiber composites have a high degree of design freedom and high productivity through processes such as injection and extrusion in general, but their physical properties are rather low. Although continuous fiber composites have high physical properties, they have the disadvantage of low degree of freedom in design. Recently, the case of applying continuous fiber composites to replace the main materials of applications requiring high rigidity/high strength is increasing.

Continuous fiber thermoplastic composites include unidirectional composites and woven fabric composites.

The unidirectional composite material has the characteristics of low price and high degree of design freedom, but has a disadvantage in that the fiber arrangement is high during thermoforming.

The fabric composite material is expensive due to the process of manufacturing the fabric, but has the advantage of easy handling and easy product design because there is less disruption of the fiber arrangement during thermoforming.

However, when a general fabric composite material has a stacking sequence having a certain angle due to a characteristic arranged vertically/horizontally in the production direction, there is a difficulty in that the manufacturing cost increases because a lot of material wastage.

In order to solve this problem, European Patent Application Laid-Open No. 2479327 discloses a fabric material and a manufacturing method having two warp oriented tapes, but even using the above technique, the loss rate of wasted material in manufacturing the fabric composite material is high. There is a big problem inherent in it.

An object of the present invention is to improve the limitation in which the fiber arrangement of the fabric composite material is arranged only vertically/horizontally in the longitudinal direction, and to manufacture a fabric sheet with improved impregnation properties of the thermoplastic composite fabric sheet produced using a dry fabric. An object of the present invention is to provide a manufacturing method, a manufacturing apparatus using the same, and a fabric sheet manufactured therefrom.

As a first preferred embodiment according to the present invention, a first tape supply step (S10) in which a plurality of first tapes are supplied in one direction by a first tape feeder; a transfer unit supply step (S20) in which the plurality of first tapes that have passed through the first tape supply step (S10) are supplied to the first tape transfer unit by the first tape push unit; The plurality of first tapes that have passed through the transfer unit supply step (S20) are alternately raised by the first tape lift, and their length is corrected through the reciprocating motion of the sliding-type first tape holder to secure a space ( S30); Before the space securing step (S30) proceeds, the plurality of second tapes supplied in a direction crossing the plurality of first tapes are supplied to each second tape transfer unit by a second tape feeder. tape supply step (S40); The second tape transfer unit passing through the second tape supply step (S40) transfers the second tape to the second tape holder via the space of the space securing step (S30), and the transferred second tape is the second tape a fixing step of being fixed to the holder (S50); a returning step (S60) of returning the second tape transfer unit that has undergone the fixing step (S50); a cutting step (S70) in which the second tape is cut by a second tape cutter while the second tape is fixed by the second tape transfer unit that has undergone the returning step (S60); And the second tape passed through the cutting step (S70) provides a method of manufacturing a thermoplastic composite fabric sheet comprising a close contact step (S80) in close contact with the second tape adhesion machine.

In the transfer unit supply step (S20), the first tape transfer unit includes a first sliding tape holder and a fixed first tape holder, and the first tape is applied to the first sliding type tape holder and the first fixed tape holder. characterized in that it is supplied.

The first tape alternately raised by the first tape lift in the space securing step (S30) is a first tape disposed at an odd number position with respect to any one first tape among a plurality of first tapes. do.

The first tape alternately raised by the first tape lift in the space securing step ( S30 ) is a first tape in which any one of a plurality of first tapes and one or more first tapes adjacent thereto are paired as a pair. It is characterized in that it is the first tape disposed at odd numbered positions based on .

In the fixing step (S50), the second tape transfer unit repeatedly passes through the lower surface of the first tape raised by the first tape lift and the upper surface of the first tape that is not raised by the first tape lift. do.

In the cutting step (S70), the driving type second tape transfer holder is positioned between the second tape transfer unit returned in the returning step (S60) and the stacked arrangement of the first tape and the second tape.

As a first preferred embodiment according to the present invention, there is provided a manufacturing apparatus using a method for manufacturing a thermoplastic composite fabric sheet.

As a first preferred embodiment according to the present invention, there is provided a fabric sheet manufactured by a method for manufacturing a thermoplastic composite fabric sheet.

According to the present invention, when a lamination pattern is required to implement a thermoplastic composite fabric sheet to which a thermoplastic fiber-reinforced composite is applied, it is possible to provide a manufacturing method, a manufacturing apparatus using the same, and a fabric sheet for reducing the loss of material.

1 is a schematic view showing a process for manufacturing a thermoplastic composite fabric sheet according to an embodiment of the present invention.

2 is a schematic diagram showing step S10 according to an embodiment of the present invention.

3 to 5 are schematic diagrams showing step S20 according to an embodiment of the present invention.

6 is a schematic diagram showing step S30 according to an embodiment of the present invention.

7 is a schematic diagram showing step S40 according to an embodiment of the present invention.

8 and 9 are schematic diagrams showing step S50 according to an embodiment of the present invention.

10 and 11 are schematic diagrams showing step S70 according to an embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the following description describes the present invention by way of specific examples, and the technical spirit of the present invention is not limited to the following description. And, the accompanying drawings are provided to help the understanding of the present invention, and the technical spirit of the present invention is not limited to the accompanying drawings.

In addition, the thickness of the lines shown in the drawings, the size of components, etc. may be exaggerated or reduced for clarity and convenience of explanation, and the terms described in this specification are terms defined in consideration of functions in the present invention. , the above terms may vary according to the intention or custom of the operator. Therefore, definitions of terms described in this specification should be interpreted based on the content throughout this specification.

According to a preferred embodiment of the present invention, a first tape supply step (S10) in which a plurality of first tapes are supplied in one direction by a first tape feeder; a transfer unit supply step (S20) in which the plurality of first tapes that have passed through the first tape supply step (S10) are supplied to the first tape transfer unit by the first tape push unit; The plurality of first tapes that have passed through the transfer unit supply step (S20) are alternately raised by the first tape lift, and their length is corrected through the reciprocating motion of the sliding-type first tape holder to secure a space ( S30); Before the space securing step (S30) proceeds, the plurality of second tapes supplied in a direction crossing the plurality of first tapes are supplied to each second tape transfer unit by a second tape feeder. tape supply step (S40); The second tape transfer unit passing through the second tape supply step (S40) transfers the second tape to the second tape holder via the space of the space securing step (S30), and the transferred second tape is the second tape a fixing step of being fixed to the holder (S50); a returning step (S60) of returning the second tape transfer unit that has undergone the fixing step (S50); a cutting step (S70) in which the second tape is cut by a second tape cutter while the second tape is fixed by the second tape transfer unit that has undergone the returning step (S60); And to provide a method of manufacturing a thermoplastic composite fabric sheet comprising the step (S80) in close contact with the second tape passed through the cutting step (S70) by a second tape adhesion machine.

1 is a schematic view showing a process for manufacturing a thermoplastic composite fabric sheet according to an embodiment of the present invention. The manufacturing process of the thermoplastic composite fabric sheet of the present invention can be confirmed with reference to FIG. 1 .

The detailed procedure of each step of the preferred embodiment of the present invention will be described in the following detailed description.

The first tape supply step ( S10 ) includes a step of supplying a plurality of first tapes 100 in one direction by the first tape feeder 140 . Referring to FIG. 2 , the first tape 100 is a thermoplastic composite material manufactured with a constant width by the first tape feeder 140 and supplied in one direction, and the first tape 100 rotates with frictional force. By passing between the first tape feeders 140 , the tape may be supplied to the first push unit 150 in one direction, and the tape may be supplied by mounting a rail for preventing sagging and separation of the supplied tape.

The first tape 100 may be a thermoplastic composite material including a combination of a thermoplastic resin and reinforcing fibers. The thermoplastic resin is polyvinyl chloride (PVC), polyethylene (PE), polypropylene (PP), polyamide (PA), polyacetal (POM), polybutylene terephthalate (PBT), polyphenylene sulfide (PPS) , polyethyl ether ketone (PEEK), linear low-density polyethylene (LLDPE), high-density polyethylene (HDPE), and the like. As the reinforcing fiber, carbon fiber, glass fiber, silicon carbide fiber, boron fiber, aramid fiber, natural fiber, metallic fiber, etc. may be used.

The transfer unit supply step (S20) is a step in which the plurality of first tapes 100 that have passed through the first tape supply step (S10) are supplied to the first tape transfer unit 160 by the first tape push unit 150 . includes Referring to FIGS. 3 to 5 , the plurality of first tapes 100 that have passed through the first tape supply step ( S10 ) are a slide type first tape holder 110 and a fixed type by the first tape push unit 150 . It is supplied to the first tape transfer unit 160 including the first tape holder 120 , and in more detail is supplied to the slide-type first tape holder 110 . The slide-type first tape holder 110 may receive the first tape 100 coupled to the first tape push unit 150 by rotation of the first tape push unit 150 . The first tape transfer unit 160 may preferably be inclined so that the fixed first tape holder 120 is closer to the ground than the slide-type first tape holder 110 in view of the transfer of the first tape 100 . have. The first tape transfer unit 160 is preferably formed such that the first tape 100 is continuously supplied from the slide-type first tape holder 110 to the fixed first tape holder 120 , and the slide-type first tape The holder 110 and the fixed first tape holder 120 are formed on one surface of the first tape transfer unit 160 and are not limited thereto even if they have a cylindrical shape, a polygonal shape, or an arbitrary structure as long as they do not prevent the continuous arrangement.

In the space securing step (S30), the plurality of first tapes 100 that have passed through the transfer unit supply step (S20) are alternately lifted by the first tape lift 130 while reciprocating the sliding-type first tape holder 110 . The length is corrected through movement, including the step of securing a space. 1 and 6, the one-way ends of the plurality of first tapes 100 that have undergone the transfer unit supply step (S20) are fixed to the fixed first tape holder 120 of FIGS. 3 to 5, The staggered structure is implemented by being alternately raised by the first tape lift 130 . As described in FIGS. 1 and 6 , the first tape lift 130 is provided between the sliding type first tape holder 110 and the fixed type first tape holder 120 of FIGS. 3 to 5 of the first tape. A plurality may be formed in the longitudinal direction and the width direction. The individual first tape 100 may secure a space by pushing up a portion of the first tape 100 that collides with one or more first tape lifts among the plurality of first tape lifts 130 . In addition, the first tape 100 that is alternately lifted by the first tape lift 130 may be a first tape disposed at an odd number position with respect to any one of the first tapes 100 among the plurality of first tapes. The first tape may be a first tape disposed at odd numbered positions based on the first tape having any one first tape 100 and one or more first tapes 100 adjacent thereto as a pair among a plurality of first tapes can The sliding-type first tape holder 110 can smoothly form a space by the first tape lift 130 and the first tape 100 by correcting the tension with a reciprocating motion that corrects the length of the first tape 100 . can Accordingly, in the space securing step ( S30 ), the staggered structure of the first tape 100 is clearly realized, and the first tape 100 and the first tape ret 130 raised by the first tape lift 130 . A space between the non-raised first tapes 100 may be secured.

In the second tape supply step (S40), before the space securing step (S30) proceeds, the plurality of second tapes 200 are supplied in a direction that intersects the plurality of first tapes 100, and the second tape feeder and being fed to each second tape conveying unit 240 by 230 . 1 and 7 , the second tape 200 may be supplied in a direction crossing the first tape 100 , and the second tape 200 may pass between the two second tape feeders 230 . It may pass through and be supplied to the second tape transfer unit 240 included in the second tape supply unit 220 with a constant width. have. The intersecting direction is effective at any angle in the range where the second tape 200 and the first tape 100 intersect. The second tape 200 may have the same composition as the first tape 100 described in the first tape supply step S10 .

In the fixing step (S50), the second tape transfer unit 240, which has undergone the second tape supply step (S40), is transferred to the second tape holder 250 via the space of the space securing step (S30). 200 , and the transferred second tape 200 is fixed to the second tape holder 250 . Referring to FIGS. 8 and 9 , the second tape transfer unit 240 is coupled to the second tape 200 through the space of the space securing step ( S30 ) to the second tape holder 250 and the second tape holder 250 . 2 The tape 200 may be fixed. Via the space, the second tape transfer unit 240 is connected to the lower surface of the first tape 100 raised by the first tape lift 130 of FIGS. 1 and 6 and the first tape lift 130 . It means to repeatedly pass through the upper surface of the first tape 100 that is not raised by the .

The returning step ( S60 ) includes returning the second tape transfer unit 240 . The second tape transfer unit 240 is returned to the position of the second tape supply step (S40) via the space of the space securing step (S30) again, and is combined with the second tape 200 to wait. can

In the cutting step (S70), the second tape 200 is fixed by the second tape transfer unit 240 that has undergone the return step (S60), and the second tape 200 is removed by the second tape cutter 270. cutting step. Referring to FIGS. 10 and 11 , the driving type second tape transfer holder 260 includes a portion in which the first tape 100 and the second tape 200 are stacked and arranged, and returned in the return step ( S60 ). The second tape 200 may be fixed by being positioned between the second tape transfer units 240 . The driving type second tape transfer holder 260 may be fixed such that the second tape 200 fixed to the second tape holder 250 maintains a predetermined tension. The second tape 200 may be cut by the second tape cutter 270 while being fixed by the driving type second tape transfer holder 260 .

The adhesion step (S80) includes a step in which the second tape 200 that has undergone the cutting step (S70) is in close contact with the second tape adhesion device 210 . Referring to FIG. 1 , in the second tape adherer 210 , the second tape holder 250 and the driving type second tape transfer holder 260 are transferred through a rotational movement and are in close contact with the second tape 200 at the same time. , the first tape 100 and the second tape 200 may be stacked and closely adhered.

In addition, the method for manufacturing a thermoplastic composite fabric sheet of the present invention includes a winding step (S90) of winding the thermoplastic composite sheet and a repeating step (S100) of repeating the first tape supply step (S10) to the winding step (S90). may include more.

According to a preferred embodiment of the present invention, it is to provide a manufacturing apparatus using the manufacturing method of the thermoplastic composite fabric sheet. The manufacturing apparatus may use a manufacturing method that reduces the loss of material when a lamination pattern is required to implement a thermoplastic composite fabric sheet to which a thermoplastic fiber-reinforced composite is applied.

According to a preferred embodiment of the present invention, it is to provide a fabric sheet manufactured by a method for manufacturing a thermoplastic composite fabric sheet. The fabric sheet may improve the limitation that the fiber arrangement of the fabric composite is only vertically/horizontally arranged in the longitudinal direction and improve the impregnability of the thermoplastic composite fabric sheet manufactured using a dry fabric.

The method for manufacturing the thermoplastic composite fabric sheet of the present invention can be applied to a manufacturing apparatus, and the fabric sheet can be manufactured by the manufacturing method.

Claims

a first tape supply step (S10) in which a plurality of first tapes are supplied in one direction by a first tape feeder;

a transfer unit supply step (S20) in which the plurality of first tapes that have passed through the first tape supply step (S10) are supplied to the first tape transfer unit by the first tape push unit;

The plurality of first tapes that have passed through the transfer unit supply step (S20) are alternately raised by the first tape lift, and their length is corrected through the reciprocating motion of the sliding-type first tape holder to secure a space ( S30);

Before the space securing step (S30) proceeds, the plurality of second tapes supplied in a direction crossing the plurality of first tapes are supplied to each second tape transfer unit by a second tape feeder. tape supply step (S40);

The second tape transfer unit passing through the second tape supply step (S40) transfers the second tape to the second tape holder via the space of the space securing step (S30), and the transferred second tape is the second tape a fixing step of being fixed to the holder (S50);

a returning step (S60) of returning the second tape transfer unit that has undergone the fixing step (S50);

a cutting step (S70) in which the second tape is cut by a second tape cutter while the second tape is fixed by the second tape transfer unit that has undergone the returning step (S60); and

The method of manufacturing a thermoplastic composite fabric sheet comprising the adhesion step (S80) in which the second tape, which has undergone the cutting step (S70), is closely adhered by a second tape adhesion machine.
The method of claim 1, wherein in the supplying step (S20) of the transfer unit, the first tape transfer unit includes a first sliding tape holder and a first fixed tape holder, and the first tape comprises a first sliding type tape holder and a first tape holder. A method of manufacturing a thermoplastic composite fabric sheet, characterized in that it is supplied to the fixed first tape holder.
The method of claim 1, wherein the first tapes alternately raised by the first tape lift in the space securing step (S30) are first tapes arranged at odd numbered positions with respect to any one first tape among a plurality of first tapes. 1 A method of manufacturing a thermoplastic composite fabric sheet, characterized in that it is a tape.
The method according to claim 1, wherein the first tape alternately raised by the first tape lift in the space securing step (S30) comprises one first tape and one or more first tapes adjacent thereto among a plurality of first tapes. A method of manufacturing a thermoplastic composite fabric sheet, characterized in that the first tape is disposed at odd numbered positions based on the pair of first tapes.
The method of claim 1, wherein in the fixing step (S50), the second tape transfer unit repeats the lower surface of the first tape raised by the first tape lift and the upper surface of the first tape that is not raised by the first tape lift. Method for producing a thermoplastic composite fabric sheet, characterized in that through the.
According to claim 1, wherein the driving type second tape transfer holder in the cutting step (S70) is located between the second tape transfer unit returned in the returning step (S60) and the stacked arrangement of the first tape and the second tape Method for producing a thermoplastic composite fabric sheet, characterized in that.
A manufacturing apparatus using the method for manufacturing a thermoplastic composite fabric sheet according to any one of claims 1 to 6.
A fabric sheet manufactured by the manufacturing method of any one of claims 1 to 6.