CN111037889A - Forming equipment and preparation process of continuous fiber reinforced thermoplastic composite material - Google Patents
Forming equipment and preparation process of continuous fiber reinforced thermoplastic composite material Download PDFInfo
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- CN111037889A CN111037889A CN201911235365.1A CN201911235365A CN111037889A CN 111037889 A CN111037889 A CN 111037889A CN 201911235365 A CN201911235365 A CN 201911235365A CN 111037889 A CN111037889 A CN 111037889A
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- Prior art keywords
- composite material
- continuous fiber
- reinforced thermoplastic
- fiber reinforced
- thermoplastic composite
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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
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/08—Deep drawing or matched-mould forming, i.e. using mechanical means only
- B29C51/082—Deep drawing or matched-mould forming, i.e. using mechanical means only by shaping between complementary mould parts
- B29C51/085—Deep drawing or matched-mould forming, i.e. using mechanical means only by shaping between complementary mould parts with at least one of the shaping surfaces being made of resilien material, e.g. rubber
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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
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/26—Component parts, details or accessories; Auxiliary operations
- B29C51/261—Handling means, e.g. transfer means, feeding means
- B29C51/262—Clamping means for the sheets, e.g. clamping frames
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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
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/26—Component parts, details or accessories; Auxiliary operations
- B29C51/30—Moulds
- B29C51/34—Moulds for undercut articles
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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
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/26—Component parts, details or accessories; Auxiliary operations
- B29C51/42—Heating or cooling
- B29C51/421—Heating or cooling of preforms, specially adapted for thermoforming
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
本发明公开了一种连续纤维增强热塑性复合材料的成型设备，包括：阳模；与所述阳模对应的阴模，所述阴模具有充满液压介质的液压腔；用以夹紧连续纤维增强热塑性复合材料的夹具；给连续纤维增强热塑性复合材料加热的加热装置；为所述液压腔提供压力的液压装置。本发明还公开了一种连续纤维增强热塑性复合材料的制备工艺。
The invention discloses a molding equipment for continuous fiber reinforced thermoplastic composite material. A fixture for thermoplastic composites; a heating device for heating continuous fiber-reinforced thermoplastic composites; a hydraulic device for providing pressure to the hydraulic chamber. The invention also discloses a preparation process of the continuous fiber reinforced thermoplastic composite material.
Description
Technical Field
The invention relates to the technical field of polymer composite material processing, in particular to forming equipment and a preparation process of a continuous fiber reinforced thermoplastic composite material.
Background
The prepreg form of continuous fiber reinforced thermoplastic Composites (CFRT) is mainly two forms of fiber prepreg and fabric prepreg. The glass fiber and the carbon fiber are main reinforcing materials for manufacturing the continuous fiber reinforced thermoplastic composite material, and the resin mainly adopts Polyamide (PA), polypropylene (PP), Polycarbonate (PC), Polyetherimide (PEI), polyphenylene sulfide (PPS), polyether ether ketone (PEEK) and the like. The continuous fiber reinforced thermoplastic composite material has high strength, rigidity, toughness and damage tolerance, and excellent high temperature use resistance, and may be used widely in airplane, automobile, sports equipment, transportation, industry, medical treatment, ship, etc.
The continuous fiber reinforced thermoplastic composite material has low density and high specific strength, and can be applied to some shell structure parts such as safety helmets (helmets), safety toe caps, luggage cases and the like. However, since the continuous fiber-reinforced thermoplastic composite prepreg is solid at room temperature and has poor fiber ductility, it is not easy to lay in a mold like the continuous fiber-reinforced thermosetting composite prepreg, and it is easy to produce a special-shaped article.
The molding method is a common hot-press molding method for continuous fiber reinforced thermoplastic composite materials, and usually adopts a metal male and female mold. For products with complex shapes, the processing cost of the die is high, and in addition, the design margin of the die cavity needs to be accurate. For some shell structure parts such as safety helmets (helmets), safety toe caps, luggage bins and the like, because the side pressure of the metal male and female molds is not high, the whole pressure is not uniform, the composite material can be caused to generate folds, creases and the like when the structure is subjected to special-shaped change, the stress of the product is not uniform, and the fiber distribution is not uniform and dense.
Disclosure of Invention
The present invention is directed to a molding apparatus and a manufacturing process for continuous fiber reinforced thermoplastic composite material, which solves the above problems.
The technical problem solved by the invention can be realized by adopting the following technical scheme:
an apparatus for forming a continuous fiber reinforced thermoplastic composite, comprising:
a male mold;
the female die corresponds to the male die and is provided with a hydraulic cavity filled with hydraulic medium;
a clamp for clamping the continuous fiber reinforced thermoplastic composite material;
a heating device for heating the continuous fiber reinforced thermoplastic composite material;
and a hydraulic device for providing pressure to the hydraulic chamber.
In a preferred embodiment of the present invention, the hydraulic device comprises a pipeline connected with the hydraulic chamber, and a hydraulic motor, a valve and a hydraulic system which are arranged on the pipeline, and the hydraulic system is also connected with a pressure gauge.
In a preferred embodiment of the invention, the side of the hydraulic chamber facing the male mould is provided with a flexible diaphragm.
In a preferred embodiment of the present invention, the flexible diaphragm is made of rubber, silicone or elastomer, and has a thickness of 10-20 mm.
In a preferred embodiment of the present invention, the heating device is an infrared lamp tube heating device or a resistance wire heating device.
In a preferred embodiment of the invention, the male die is made of a metal material.
In a preferred embodiment of the invention, the hydraulic medium is water or silicone oil or hydraulic oil.
The preparation process of the continuous fiber reinforced thermoplastic composite material is characterized in that the forming equipment of the continuous fiber reinforced thermoplastic composite material in any technical scheme comprises the following steps:
1) filling a hydraulic cavity of a female die with a hydraulic medium;
2) placing a prepared continuous fiber reinforced thermoplastic composite material plate on a clamp, and applying a certain edge pressing force;
3) starting a heating device, and heating the continuous fiber reinforced thermoplastic composite material plate to soften the composite material;
4) removing the heating device, driving the continuous fiber reinforced thermoplastic composite material plate to approach to the female die by the fixture until the continuous fiber reinforced thermoplastic composite material plate is attached to the bottom of the hydraulic cavity, drawing the male die upwards, and simultaneously starting the hydraulic device to keep a certain pressure of a hydraulic medium until the drawing is finished;
5) and then lowering the male die, removing the clamp and taking out the formed part.
In a preferred embodiment of the present invention, the heating temperature of the heating device is 20 to 60 ℃ higher than the melting temperature of the continuous fiber reinforced thermoplastic composite material sheet.
In a preferred embodiment of the invention, the pressure of the hydraulic medium is 1-100 MPa.
By adopting the technical scheme, aiming at the defects of low side pressure, uneven pressure and the like of a metal male and female die in the preparation process of the continuous fiber reinforced thermoplastic composite shell structural part, the female die in the metal male and female die is replaced by a hydraulic cavity, a hydraulic medium is used in the hydraulic cavity, the pressure of the hydraulic medium is 1-100MPa, and the composite plate is compressed by abutting against the metal male die to prepare the shell structural part with a specific shape. Because the static pressure of the hydraulic medium in the hydraulic cavity is uniformly applied, the pressure of the composite material at the high and low positions of the die in the die is uniform, and thus, folds, creases and the like in the shaping process are reduced. In addition, the molding equipment designed by the invention separates the preheating softening, the molding and the cooling of the thermoplastic composite material, and the mold is only responsible for molding and cooling, so that the types of the composite materials suitable for the mold are increased, and the processing efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a continuous fiber reinforced thermoplastic composite molding apparatus in a preheating and softening stage of a composite plate.
FIG. 2 is a schematic view of the continuous fiber-reinforced thermoplastic composite molding apparatus with the heating device removed.
Fig. 3 is a schematic structural diagram of a continuous fiber reinforced thermoplastic composite material forming device in a drawing stage in which a male die moves upwards.
Fig. 4 is a schematic structural view of a continuous fiber reinforced thermoplastic composite shell article.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below.
Referring to fig. 1 to 4, the apparatus for molding a continuous fiber reinforced thermoplastic composite material includes a male mold 11, a female mold 1, a jig 5, a heating device 4, and a hydraulic device.
The female die 1 corresponds to the male die 11, the female die 11 is provided with a hydraulic cavity 2 filled with a hydraulic medium, one surface of the hydraulic cavity 2 facing the male die 11 is provided with a flexible diaphragm 3, the flexible diaphragm 4 is made of rubber, silica gel or an elastomer, the thickness of the flexible diaphragm is 10-20mm, and the diaphragms made of different materials are different in thickness. The male die 11 is made of metal material, and the male die 11 is connected with a lifting device to drive the lifting device to lift.
The clamp 5 is used for clamping the continuous fiber reinforced thermoplastic composite material 6 and applying a certain edge pressing force, and the clamp 5 can also be connected with a moving device to drive the moving device to translate and lift.
The heating device 4 heats the continuous fiber reinforced thermoplastic composite material plate 6 to soften the composite material, the heating device 4 is an infrared lamp tube heating device or a resistance wire heating device, and the heating device 4 can also be connected with the moving device to drive the moving device to move horizontally and lift. The heating temperature of the heating device is 20-60 ℃ higher than the melting temperature of the continuous fiber reinforced thermoplastic composite material plate.
The hydraulic device provides pressure for the hydraulic cavity 2, the hydraulic device comprises a pipeline 12 connected with the hydraulic cavity 2, a hydraulic motor 9, a valve 7 and a hydraulic system 7, the hydraulic motor 9, the valve 7 and the hydraulic system 7 are arranged on the pipeline 12, the hydraulic system 7 is further connected with a pressure gauge 10, and the pressure of a hydraulic medium is 1-100MPa, preferably 50-100 MPa. The hydraulic medium is water or silicon oil or hydraulic oil.
The process for preparing the continuous fiber reinforced thermoplastic composite material can be completed by using a forming device of the continuous fiber reinforced thermoplastic composite material, and a few examples are listed below.
Example 1
1) Filling water into a hydraulic cavity (2) of a female die (1);
2) placing a prepared continuous glass fiber reinforced PP composite material plate on a clamp 5, and applying a certain edge pressing force;
3) starting the heating device 4, wherein the heating temperature is 180 ℃, and heating the continuous glass fiber reinforced PP composite material plate to soften the composite material;
4) removing the heating device 4, driving the continuous glass fiber reinforced PP composite material plate to approach to the female die 1 by the fixture 5 until the composite material plate is attached with a silica gel flexible diaphragm 3 with the thickness of 10mm, moving the male die 11 upwards for drawing, and simultaneously starting the hydraulic system 7 to keep the liquid at a certain pressure of 50MPa until the drawing is finished;
5) the male die 11 is then lowered, the clamp 5 is removed, and the formed part is taken out.
Example 2
1) Firstly, filling silicone oil in a hydraulic cavity 2 of a female die 1;
2) placing a prepared continuous glass fiber reinforced PA6 composite material plate on a clamp 5, and applying a certain edge pressing force;
3) starting the heating device 4, wherein the heating temperature is 280 ℃, and heating the continuous glass fiber reinforced PA6 composite material plate to soften the composite material;
4) removing the heating device 4, driving the continuous glass fiber reinforced PA6 composite material plate 6 to approach to the female die 1 by the fixture 5 until the composite material plate is attached with the rubber flexible diaphragm 3 with the thickness of 15mm, moving the male die 11 upwards for deep drawing, and simultaneously starting the hydraulic system 7 to keep the liquid at a certain pressure of 75MPa until the deep drawing is finished;
5) the male die 11 is then lowered, the clamp 5 is removed, and the formed part is taken out.
Example 3
1) Firstly, filling silicone oil in a hydraulic cavity 2 of a female die 1;
2) placing a prepared continuous carbon fiber reinforced PPS composite material plate on a clamp 5, and applying a certain edge pressing force;
3) starting the heating device 4, heating the continuous carbon fiber reinforced PPS composite material plate at 340 ℃, and softening the composite material;
4) removing the heating device 4, driving the continuous carbon fiber reinforced PPS composite material plate to approach the female die 1 by the fixture 5 until the composite material plate is attached with the silica gel flexible diaphragm 3 with the thickness of 20mm, moving the male die 11 upwards for deep drawing, and starting the hydraulic system 7 to keep the liquid at a certain pressure of 100MPa until the deep drawing is finished;
5) the male die 11 is then lowered, the clamp 5 is removed, and the formed part is taken out.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911235365.1A CN111037889A (en) | 2019-12-05 | 2019-12-05 | Forming equipment and preparation process of continuous fiber reinforced thermoplastic composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911235365.1A CN111037889A (en) | 2019-12-05 | 2019-12-05 | Forming equipment and preparation process of continuous fiber reinforced thermoplastic composite material |
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| Publication Number | Publication Date |
|---|---|
| CN111037889A true CN111037889A (en) | 2020-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911235365.1A Pending CN111037889A (en) | 2019-12-05 | 2019-12-05 | Forming equipment and preparation process of continuous fiber reinforced thermoplastic composite material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114474685A (en) * | 2022-03-07 | 2022-05-13 | 苏州天翊复合材料有限公司 | Automatic hot stamping forming equipment and method for polypropylene self-reinforced composite material |
Citations (5)
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|---|---|---|---|---|
| US6631630B1 (en) * | 2000-09-22 | 2003-10-14 | Board Of Trustees Of Michigan State University | Hydroforming of composite materials |
| US20110147995A1 (en) * | 2009-12-22 | 2011-06-23 | International Composites Technologies, Inc. | Thermoplastics forming process for molding articles with complex shapes |
| CN109311547A (en) * | 2016-03-18 | 2019-02-05 | 普帕克公司 | Method for making cellulosic products, apparatus for forming cellulosic products, and cellulosic products |
| CN109866411A (en) * | 2017-12-01 | 2019-06-11 | 上纬企业股份有限公司 | The pressing and forming method and pressing and forming equipment of continuous fiber composite board |
| CN211683431U (en) * | 2019-12-05 | 2020-10-16 | 上海沥高科技股份有限公司 | Forming equipment for continuous fiber reinforced thermoplastic composite material |
-
2019
- 2019-12-05 CN CN201911235365.1A patent/CN111037889A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6631630B1 (en) * | 2000-09-22 | 2003-10-14 | Board Of Trustees Of Michigan State University | Hydroforming of composite materials |
| US20110147995A1 (en) * | 2009-12-22 | 2011-06-23 | International Composites Technologies, Inc. | Thermoplastics forming process for molding articles with complex shapes |
| CN109311547A (en) * | 2016-03-18 | 2019-02-05 | 普帕克公司 | Method for making cellulosic products, apparatus for forming cellulosic products, and cellulosic products |
| CN109866411A (en) * | 2017-12-01 | 2019-06-11 | 上纬企业股份有限公司 | The pressing and forming method and pressing and forming equipment of continuous fiber composite board |
| CN211683431U (en) * | 2019-12-05 | 2020-10-16 | 上海沥高科技股份有限公司 | Forming equipment for continuous fiber reinforced thermoplastic composite material |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114474685A (en) * | 2022-03-07 | 2022-05-13 | 苏州天翊复合材料有限公司 | Automatic hot stamping forming equipment and method for polypropylene self-reinforced composite material |
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