CN215970200U - Continuous fiber reinforced thermoplastic composite material core layer structure and manufacturing device thereof - Google Patents

Abstract

The utility model discloses a continuous fiber reinforced thermoplastic composite material core layer structure and a manufacturing device thereof. The utility model provides a preparation facilities of this sandwich layer structure, including creel, fibre preloading device, exhibition yarn device, flooding mould and the setting device that sets gradually, the setting device includes a set of hot pressing stock roll and a set of stock roll of colding pressing, the outer wall of hot pressing stock roll and colding pressing stock roll all is provided with even design tooth, the length direction of design tooth is the axial of hot pressing stock roll and colding pressing stock roll, and the section of design tooth is trapezoidal. The core layer structure of the utility model introduces the fiber material into the resin matrix, enhances the mechanical properties such as rigidity and the like, and improves the compression resistance and the bending resistance by setting the core layer material into a trapezoidal waveform. The preparation device provided by the utility model realizes continuous preparation of the wavy core layer structure, and is high in efficiency.

Description

Continuous fiber reinforced thermoplastic composite material core layer structure and manufacturing device thereof

Technical Field

The utility model belongs to the technical field of core layer structure manufacturing, and particularly relates to a continuous fiber reinforced thermoplastic composite material core layer structure and a manufacturing device thereof.

Background

The use of low-density sandwich structure materials in sandwich structure composite materials can increase the thickness of the laminated plate and greatly improve the rigidity of the laminated plate, so that the composite materials with the structure of the type are widely applied to the fields of aerospace, ship manufacturing, military industry and the like. At present, the types of sandwich structure materials are mainly rigid foam, honeycomb, balsa wood and corrugated structures; although the sandwich structure material has been used in various fields as a sandwich material, the extension of the application field is limited due to the structural defects thereof.

In national utility model patent CN202368005U, a sandwich structure has been prepared, and its structural style is: polypropylene or polyurethane foam materials are used as a first base layer of the sandwich structure, and the light wood material is not moisture-resistant. In national utility model patent CN105172280B, a honeycomb sandwich panel combined material has been prepared, from the top down be covering, upper surface glue, honeycomb core, lower surface glue and covering down in proper order, the cementing property of honeycomb sandwich layer and panel is more weak and need water repellent. National utility model patent CN205150216U has prepared a small unmanned aerial vehicle's foam sandwich wing, and this foam structure is last covering, upper surface glue, foam sandwich layer, lower surface glue and covering down, and the defect of this structure lies in the foam sandwich structure's mechanical properties poor, and the cohesion of covering and foam is relatively poor, and in addition, the foam is along with the type nature poor, and processing is loaded down with trivial details.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a continuous fiber reinforced thermoplastic composite material core layer structure and a manufacturing device thereof, wherein the core layer structure has the advantages of the conventional core layer structure, and has higher mechanical properties such as rigidity and the like by introducing reinforced fibers. Also provides a manufacturing device of the core layer, which can continuously and efficiently prepare the trapezoidal wave-shaped core layer structure.

The purpose of the utility model is realized as follows: continuous fibers reinforcing thermoplasticity combined material sandwich layer structure manufacturing installation, including creel, fibre preloading device, exhibition yarn device, impregnation mould and the setting device that sets gradually, the setting device includes a set of hot pressing stock roll and a set of stock roll of colding pressing, the outer wall of hot pressing stock roll and the stock roll of colding pressing all is provided with even design tooth, the length direction of design tooth is the axial of hot pressing stock roll and the stock roll of colding pressing, and the section of design tooth is trapezoidal.

Further, a fiber width fixing roller is arranged between the yarn spreading device and the impregnation die.

Further, an extruder is connected to the impregnation die.

Furthermore, a preheating device is arranged between the fiber pre-tightening device and the yarn spreading device.

Further, the preheating device is an infrared preheating device.

Further, still include transmission device and cutting device, setting device, transmission device and cutting device set gradually.

Further, the transmission device comprises a plurality of horizontal transmission shafts.

The continuous fiber reinforced thermoplastic composite material core layer structure comprises fibers and a resin matrix, wherein the resin matrix coats the fibers, and the core layer structure is in a continuous trapezoidal waveform.

Further, the fibers are one or a mixture of several of carbon fibers, glass fibers, aramid fibers and basalt fibers.

Further, the resin matrix is one of PP, PE, PA, PPS and PEEK plastics.

The utility model has the beneficial effects that: the core layer structure of the utility model introduces the fiber material into the resin matrix, enhances the mechanical properties such as rigidity and the like, and improves the compression resistance and the bending resistance by setting the core layer material into a trapezoidal waveform. In addition, the core layer structure of the utility model is softer, has stronger following property, can realize the close fit with the surface of an object, and is convenient and fast to process.

According to the preparation device disclosed by the utility model, the fiber raw materials are subjected to fiber spreading, impregnation, hot-pressing shaping and cold-pressing shaping, and the trapezoidal shaping teeth are arranged on the hot-pressing shaping roller and the cold-pressing shaping roller, so that the wavy core layer structure is continuously prepared, and the efficiency is high.

Drawings

FIG. 1 is a general schematic view of a continuous fiber reinforced thermoplastic composite core structure of the present invention;

FIG. 2 is a schematic cross-sectional view of a continuous fiber reinforced thermoplastic composite core structure of the present invention;

FIG. 3 is a schematic view of a production apparatus of the present invention;

FIG. 4 is a schematic illustration of a hot press sizing roll and a cold press sizing roll;

FIG. 5 is a schematic top view of an impregnation die;

reference numerals: 1, a creel; 2-fiber pre-tightening device; 3-a preheating device; 4, a yarn spreading device; 5, fiber width fixing roller; 6, dipping a mould; 7-hot pressing sizing roller; 8, cold pressing and shaping roller; 9-core layer structure; 10-a transmission device; 11-a cutting device; 20-shaping teeth; 30-an extruder; 100-fibers; 200-a resin matrix;

Detailed Description

The utility model is further illustrated with reference to the following figures and examples.

As shown in fig. 1 and 2, the continuous fiber reinforced thermoplastic composite core structure of the present invention includes fibers 100 and a resin matrix 200, wherein the resin matrix 200 covers the fibers 100, and the core structure has a continuous trapezoidal waveform.

The fiber 100 is one or a mixture of several of carbon fiber, glass fiber, aramid fiber and basalt fiber. The resin matrix 200 is one of PP, PE, PA, PPs, and PEEK plastics, that is, the resin matrix 200 may be polypropylene, polyethylene, nylon, polyphenylene sulfide, polyetheretherketone, or the like.

The core layer material is designed into a trapezoidal waveform, and has higher mechanical properties such as rigidity and the like compared with the traditional core layer material (such as balsa wood, honeycomb, foam and the like), and in addition, the compression resistance and the bending resistance of the core layer material are improved by arranging the reinforcing fibers. In addition, the product of the utility model is soft, has strong following property, can realize close fit with the surface of an object, is convenient to process, is lighter than the traditional sandwich structure, and has higher specific strength and specific rigidity. The internal stress of the core layer structure material is uniformly released under the action of a hot-cold setting roller. The reinforcing can be in one or several kinds of mixed form among carbon fiber, glass fiber, aramid fiber and the basalt fiber, and resin base member 200 can adopt polypropylene, polyethylene, nylon, polyphenylene sulfide and polyether ether ketone etc. has realized the diversification of product form, makes the utility model discloses a flute structure can be used in under the operating mode of difference.

Above-mentioned manufacturing installation of continuous fibers reinforcing thermoplasticity combined material sandwich layer structure, as shown in fig. 3 and fig. 4, including creel 1, fibre preloading device 2, exhibition yarn device 4, impregnation mould 6 and the setting device that sets gradually, the setting device includes a set of hot pressing forming roll 7 and a set of stock roll 8 of colding pressing, hot pressing forming roll 7 and the outer wall of colding pressing forming roll 8 all are provided with even design tooth 20, the length direction of design tooth 20 is hot pressing forming roll 7 and the axial of colding pressing forming roll 8, and the section of design tooth 20 is trapezoidal.

The creel 1 is used for unreeling fiber raw materials, the fiber raw materials are one or a mixture of several of carbon fibers, glass fibers, aramid fibers and basalt fibers, and the automatic unreeling machine is mounted on the creel 1 and can unreel according to the comprehensive requirements of production speed and fiber tension.

The fiber pretensioning device 2 is used to apply a certain tension to the fiber 100 to initiate the path of the fiber 100, and generally includes a plurality of pretensioning shafts, the height of which is adjusted to adjust the pretensioning force applied to the fiber 100.

The yarn spreading device 4 is used for spreading the fibers 100, and the abrasion-free spreading of the fiber bundles can be realized by adopting the existing equipment, such as airflow yarn spreading equipment and the like.

The impregnation die 6 contains a molten resin matrix 200, one end of which is provided with a fiber inlet and the other end of which is provided with a fiber outlet, and the fiber 100 is impregnated in the resin matrix 200 while passing through the impregnation die 6, so that the resin matrix 200 covers the fiber 100. In order to replenish the impregnation die 6 with the resin matrix 200, as shown in fig. 5, an extruder 30 is connected to the impregnation die 6. The extruder 30 can plasticize the resin matrix raw material, and extrude the plasticized resin matrix 200 into the impregnation die 6, so as to continuously provide the resin matrix 200, thereby realizing continuous production. The extruder 30 may be a conventional twin-screw or single-screw extruder. The stretched fiber bundle is impregnated with monofilaments in an impregnation die 6; then shaping by a mouth die and extruding; the prepared prepreg has the thickness range of 0.1-2mm and the width of 8-300 mm.

After passing through the dipping die 6, the core layer is planar, the shaping device is used for shaping the planar core layer into a trapezoidal waveform, the hot-pressing shaping roller 7 and the cold-pressing shaping roller 8 are as shown in fig. 4, the core layer is extruded by utilizing trapezoidal shaping teeth 20, so that the core layer is deformed, the sizes and the structures of the hot-pressing shaping roller 7 and the cold-pressing shaping roller 8 are the same, and the diameter range of the shaping rollers is 100-200mm (preferably 150 mm). Firstly, a hot-pressing shaping roller 7 is used for extrusion shaping, and then a cold-pressing shaping roller 8 is used for extrusion shaping, wherein the temperature range of the hot-pressing shaping roller 7 is 10-50 ℃ lower than the melting point of the resin matrix (preferably 20 ℃ lower), and the temperature range of the cold-pressing shaping roller 8 is 50-100 ℃ (preferably 80 ℃).

A fiber width-fixing roller 5 is arranged between the yarn spreading device 4 and the impregnation die 6, and the fiber width-fixing roller 5 is used for controlling the width of the fibers 100, so that the width of the fibers 100 is kept stable, and the distribution uniformity of the fibers 100 is improved.

A preheating device 3 is arranged between the fiber pre-tightening device 2 and the yarn spreading device 4, the preheating device 3 preheats the fibers 100 and can remove moisture and sizing agent on the surfaces of the fibers 100, and the preheating temperature range is 80-300 ℃, and is preferably 150 ℃. The preheating device 3 can be an existing electric heating device or the like, and an infrared preheating device is preferably adopted in the utility model.

In order to facilitate cutting of the prepared and molded core structure 9, the core structure further comprises a conveying device 10 and a cutting device 11, wherein the shaping device, the conveying device 10 and the cutting device 11 are sequentially arranged. The transport device 10 is used for transporting the core structure 9, and the cutting device 11 may be conventional equipment, and may cut the core structure 9 to a certain length according to actual needs.

The transport device 10 may be a conveyor belt or the like, said transport device 10 comprising a plurality of horizontal transport shafts.

This preparation facilities can realize all processes such as exhibition yarn, flooding, shaping, cutting, realizes the core layer structure 9 of the trapezoidal wave form of serialization preparation, and is efficient.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. Continuous fibers reinforcing thermoplasticity combined material sandwich layer structure manufacturing installation which characterized in that: including creel (1), fibre preloading device (2), exhibition yarn device (4), impregnation mould (6) and the setting device that sets gradually, the setting device includes a set of hot pressing forming roll (7) and a set of chill press forming roll (8), the outer wall of hot pressing forming roll (7) and chill press forming roll (8) all is provided with even shaping tooth (20), the length direction of shaping tooth (20) is the axial of hot pressing forming roll (7) and chill press forming roll (8), and the section of shaping tooth (20) is trapezoidal.

2. The apparatus for manufacturing a continuous fiber reinforced thermoplastic composite core structure of claim 1, wherein: and a fiber width-fixing roller (5) is arranged between the yarn spreading device (4) and the dipping die (6).

3. The apparatus for manufacturing a continuous fiber reinforced thermoplastic composite core structure of claim 1, wherein: the dipping die (6) is connected with an extruder (30).

4. The apparatus for manufacturing a continuous fiber reinforced thermoplastic composite core structure of claim 1, wherein: and a preheating device (3) is arranged between the fiber pre-tightening device (2) and the yarn spreading device (4).

5. The apparatus for manufacturing a continuous fiber reinforced thermoplastic composite core structure of claim 4, wherein: the preheating device (3) is an infrared preheating device.

6. The apparatus for manufacturing a continuous fiber reinforced thermoplastic composite core structure of claim 1, wherein: the automatic shaping device is characterized by further comprising a transmission device (10) and a cutting device (11), wherein the shaping device, the transmission device (10) and the cutting device (11) are sequentially arranged.

7. The apparatus for manufacturing a continuous fiber reinforced thermoplastic composite core structure of claim 6, wherein: the transfer device (10) comprises a plurality of horizontal transfer shafts.

8. A continuous fiber reinforced thermoplastic composite core structure manufactured by the continuous fiber reinforced thermoplastic composite core structure manufacturing apparatus according to claim 1, characterized in that: the fiber core comprises fibers (100) and a resin matrix (200), wherein the resin matrix (200) coats the fibers (100), and the core layer structure is in a continuous trapezoidal waveform.

9. The continuous fiber reinforced thermoplastic composite core structure of claim 8, wherein: the resin matrix (200) is one of PP, PE, PA, PPS and PEEK plastics.

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